electric wire rope hoist manufacturer

The above costs accounted for about 30% electromagnetic overhead crane of the overall cost. Metal structure according to its structure can be divided into the solid-web (the box structure made of steel plate, also known as) and lattice (generally made of steel, electric wire rope hoist manufacturer common root and lattice column), composed of the basic mechanical components of crane metal structure

electric wire rope hoist manufacturers

Wrap rate mechanism, when the 2-for-4 magnification switching magnification is not in place, crane spare part did not pay attention to check, or no increase insurance sales, in lifting the pulley activity will suddenly drop, causing a major accident.The twisted rope play rope serious disorder, electric wire rope hoist manufacturers not immediately removed, forced to use.

The weight of the metal structure

single girder overhead crane Metal structure is a metal rolling steel (e.g., Angle steel, channel steel, i-steel, steel pipe, etc.) and steel plate as a basic building block, wall mount jib crane through the methods of welding, riveting, bolt connection, according to certain rules of connection, under gravity and load of the crane steel structure. The weight of the metal structure about accounts for 40% ~ 40% of the weight, heavy crane can reach

due to the inertia of the system could not produce coasting fall

Do not pay attention to maintenance from the weight of limiter does not regulate the limiter from the weight on the use of, electromagnetic overhead crane or even deliberately do not, or increase the limit value, so that from the weight of limiter should not restrict the protective effect.The lifting mechanism brake not adjusted too loose. When overweight high speed decentralization, over head cranes due to the inertia of the system could not produce coasting fall.

With the rapid development of China's urbanization

With the rapid development of China's urbanization, the single girder bridge cranes  with its strong scalability, large capacity characteristics, in terms of construction, cargo handling and other playing an increasingly large role. However, due to the risks involved in the field of mechanical and electrical construction cranes and aerial work operation, etc., crane supplier it also became a construction safety Each crane driver must pay attention to the matter

jib crane manufacturers

jib cranes specifications, all varieties, whether you are lifting weight, rotation angle, arm length and function, what kind of requirements, we can provide you with the best solution, even we have with double spiral arms jib crane. All specifications have a common advantage: light weight, arm length, lifting large. Jib crane can be equipped with s...upply electrical accessories, electric hoist and trolleys. Other accessories include increased mounting plate, chemical bolts.jib crane manufacturers

semi gantry crane

This kind of crane motor are mounted on a chassis, semi gantry crane chassis has two axle and four large diameter cross-country decorative pattern of the tire. Four wheels are the driving wheels and the steering wheel, when on the uneven muddy construction site transfer station, eot cranes the four wheels are passing the power

The difference is the structure grab bucket crane

electric wire rope hoist manufacturerOff-road tyre crane in the workDeveloped a kind of crane is 70 s, its similar to tyre crane hoisting function, also can undertake no leg hoisting and lifting. The difference is the structure grab bucket crane of the chassis and the unique chassis structure caused by the improvement of the performance of the drive

ship gantry crane can realize stepless speed change continuously

ship gantry crane can realize stepless speed change continuously, under the condition of the pavement resistance mutations will not shut down engine, thus greatly convenient for the operation of the driver. Can the cross-country tire crane is a kind of extended performance, powerful and flexible tyre crane.double girder overhead crane manufacturers

wall mount jib crane

France, Italy, etc., the world's top companies has more than 10, wall mount jib crane the world market mainly concentrated in North America, Europe and Asia.Europe as the birthplace of the crane, crane wheel production technology the highest level. The most famous production enterprise advantage within haier, 10 ton overhead crane for sale German mark, woods borgen, Germany grove

jib cranes it is one of the largest in the world market

The United States is not only the main production of crane, jib cranes it is one of the largest in the world market, the annual market demand for $60 billion, the main production enterprises, for Manitowoc company features advanced technology, high performance, crane spare part high reliability and the products are mainly exported to the americas and Asia Pacific region; Japan since the 70 s become construction crane production country

double girder bridge crane

foundry crane generally consists of lifting trolley, bridge run institutions, bridge metal structures. Lifting trolley and consists of hoisting mechanism, trolley traveling mechanism and a small frame three parts,Wall crane is fixed to the wall of cranes, double girder bridge crane or may be elevated track along the wall or other support structure on the running boom crane

electric hoist manufacturers

over head cranes known as balancing crane, it is the use of four-bar linkage principle to make the load and the counterweight constitute a balanced system, you can use a variety of spreader flexible and easily lifting loads in three-dimensional space. Balanced crane lightweight and flexible, is an ideal lifting small items of lifting equipment, it has been widely used in factory floor machine loading and unloading, inter-process, automatic line, production line of the workpiece, lifting sand box, parts assembly, electric hoist manufacturers and railway stations, docks, warehouses and other occasions

double girder overhead travelling crane

double girder overhead travelling crane  use the occasion to span a larger building height larger workshop or warehouse, approached the wall near the lifting operations more frequently best. Multi-wall line and the top of the crane girder bridge crane or with the use of the service at close to the wall in a rectangular space, is responsible for lifting small light objects, metallurgical electric hoist large borne by the beam or bridge crane.

single girder bridge cranes

overhead cranes is widely used in indoor and outdoor warehouses, factories, docks and outdoor storage yard and other places. Bridge crane bridge crane can be divided into ordinary, simple girder bridge crane and metallurgical dedicated bridge crane three.General overhead cranes generally consists of lifting trolley, bridge run institutions, single girder bridge cranes bridge metal structures. Lifting trolley and consists of hoisting mechanism, trolley traveling mechanism and a small frame three parts.

electric wire rope hoist manufacturers

electric hoist manufacturers is a bridge crane runs on an elevated track, also known as the crane. Overhead crane lay on both sides of the bridge along the elevated track longitudinal run, lifting the car along the track laid on the bridge sideways, forming a rectangle the scope of work, you can take full advantage of the space below the lifting bridge materials, electric wire rope hoist manufacturers not hampered by ground equipment.

light duty electric winches

gantry crane manufacturer October 2011, China's construction machinery industry downturn in overall sales trends do not change. Among them, the excavator sales fell 29.92%; bulldozer sales fell 21.34%.
In 2011, influenced by the national macro-control, leading to some credit tightening in slowing the progress of construction projects, some of the projects planned to start the delayed start; at the same time consumers affected by the tightening of credit, purchase costs due to reduced demand for construction machinery reduced. Despite the current construction machinery market is facing serious challenges, but China's economic growth momentum is still strong in the coming period of China's construction machinery industry is still in rapid development, light duty electric winches especially crawler crane industry prospects.

metallurgical hoist crane

1, when the first class lifting weights (or the maximum load weight) should be suspended 0.5 m height from the ground after the weight is lowered again,
metallurgical hoist cranezcheck brake performance,wall traveling cranes reliable after confirmation, then normal operation.
2, strict implementation of Ten is not hanging system.
3, abnormal, immediately shut off the power, check the cause and immediately removed.
After work,
1, the hook is raised to a certain height, carts parked in the designated position, the control lever in the zero position, pull down the knife, eot crane cut off the power.
2, routine maintenance.
3, do shift work.

single girder overhead cranes

Lifting height refers to the top surface of the grab cranes orbit (or floor) to the vertical single girder overhead cranes distance between the extreme positions extract device, The magnitude of the rotational arm erecting crane means horizontal rotation centerline and extract means the distance between the vertical line, in units of the Working speed is the crane working body at rated load and stable operation speed.From the weight refers to lifting heavy objects mass,electric winches Can be divided into nominal weight, maximum weight, the total starting weight, effective from the weight and so on.

electric wire rope hoist manufacturer

First, electric wire rope hoist manufacturer if the line hanging problems, must after a power outage and power switches wears a sign the job before inspection or repair work to do. It also should be noted that the hook is in the lower limit position, roll on must retain more turns of safety ropes to do the above work, but we should also pay attention to: lifting heavy objects, when the liquid metal, explosive and dangerous goods must be slowly lifted from the ground , bridge crane the brake test reliability.

The crane driver device

electric magnetic overhead craneThe drive device is used to drive working organs of power equipment. Common drive electric drive, internal combustion engine drive and human power, etc. Electrical energy is clean and economic energy, electricity is the main drive of the modern crane type, almost all of the running over a limited range of rail crane,... elevator, the elevator is driven by electricity. For the flow of mobile crane at a distance (e.g., truck crane, cranes and crawler crane) more driven by internal combustion engine. Human power is suitable for some small light lifting equipment, but also used as some auxiliary equipment, spare drive and accidental temporary power (or accident status)electromagnetic overhead crane

The prototype of the crane

portal crane manufacturerChina's ancient irrigation farmland with orange is the prototype of the crane boom type. In the 14th century, Western Europe in the human and animal driven rotating arm type crane. Appeared at the beginning of the 19th century, the bridge crane; Crane important wear parts such as axle, gear and sling started using metal mat...erials, and adopts hydraulic drive. During the late 19th century, steam-driven gradually replaced the hydraulic drive the crane crane. In the 1920 s, due to the electrical industry and the rapid development of internal combustion engine industry, driven by motor or internal combustion engine device basic form of all kinds of crane. crane shipbuilding gantry crane

wall traveling cranes

Polymer materials may prevent disassembly, repair and materials have excellent adhesion, oil resistance, wall traveling cranes and 350% of the tensile strength, good to overcome the impact of vibration reducer, repair effect is more effective than the traditional methods. Wear governance Bridge crane wheel and the cart speed reducer is running is frequent, multiple reversal stop and parking will cause the reducer shaft torque, vibration, overhead bridge craneseasy to cause leakage. After the occurrence of this kind of problem, traditional methods is given priority to with machining after repair welding or brush plating to repair, but both have some disadvantages: repair welding high temperature thermal stress can not completely eliminate, prone to bend or break;

The maintenance of bridge crane

single girder overhead crane Leakage repair protect Bridge crane trolley reducer due to vibration, wear and tear, pressure, temperature and other factors, the joint surface static seal parts often appear leak phenomenon. Traditional treatment method to remove the speed reducer, replacement or daub sealing gasket sealing glue, but time-consuming, la...borious and difficult to ensure the sealing effect, will once again appear leakage in the run. double girder bridge craneThe contemporary western countries with high polymer composite material field leakage of governance, applied the most blessed the blue series and so on.

Scope jib cranes

jib cranes specifications, all varieties, whether you are lifting weight, rotation angle, arm length and function, what kind of requirements, we can provide you with the best solution, even we have with double spiral arms jib crane. All specifications have a common advantage: light weight, arm length, lifting large. Jib crane can be equipped with s...upply electrical accessories, electric hoist and trolleys. Other accessories include increased mounting plate, chemical bolts.jib crane manufacturers of rotation in the range of 180 degrees, 270 degrees, 360 degrees, can be installed anywhere. They are completely independent, and is an ideal job cranes, and applies to the outdoor yard and loading platform. Column small footprint. For very small clearance under lifting situation can get maximum lifting height.

Control of crane control system

foundry overhead craneCrane operated by electrical, hydraulic system control agencies and the movement of the machine, all kinds of lifting operations. Control control system including all kinds of manipulator, display and related components and wiring, is the man-machine dialogue interface. Safety and ergonomics requirements get here. The state of... the system is directly related to lifting operation quality, efficiency and safety.Crane and other general machine is large, the marked differences between the movable metal structure and a combination of institutional work. The cycle of intermittent operation, hoisting load of the inhomogeneity, the inconsistency of each mechanism motion cycle, institutions load range of sex, with the people involved in the homework etc, and increased the crane operation complexity, large range of safe hidden trouble, the more dangerous. Point accident prone, accident consequence more serious, and the safety of the crane is particularly importantshipbuilding gantry crane

Crane design outsourcing services

Refers to corporate customers hire a professional portal crane design service providers, provides enterprise customers with a full range of CMD technology services to enhance their technological advantages, reduce development costs behavior. Development of design, upgraded design, derivatives designed to adapt to the new needs of the existing cranes as part of the modifications or additions, which differs from the standard model developed derivative products, such as hoist

   Double girder gantry crane carrying capacity, span, good overall stability, variety, but the quality of their starting weight compared with the same single-girder gantry crane to be bigger, the cost is higher.electromagnet overhead crane Depending on the main beam structure, it can be divided into box beams and trusses in two forms. More commonly used box structure.
1, hook single girder gantry crane project is mainly applied to roads, bridges, power plants, factories and other construction, general handling and lifting handling operations.
2, the whole truss structure, light weight, wheel pressure is small, reliable performance.
3, the machine uses a single main beam, main beam on both sides of the car under the rope, lifting the shape of larger items.

Bridge crane

Bridge crane is Hengjia in workshops, warehouses and material lifting field empty for material lifting equipment. Because it is located on both ends of the tall concrete pillars or metal stents, shaped like a bridge.bridge gantry crane Overhead crane lay on both sides of the bridge along the elevated track longitudinal running, you can take full advantage of the space below the lifting bridge materials, unhindered ground equipment. It is the most widely used, the largest number of a crane.
Bridge crane is a new generation has the following advantages lifting equipment:
1, light weight, wheel pressure is small, small gauge size, reliable performance, easy to operate lifting equipment, a variety of material handling places preferred models.
2, the wheel pressure is small, bound small size, it can reduce pre-engineering investment in plant, etc., while lighting, heating and other facilities but also save some costs.
3, product performance and reliable, durable, the additional cost of products in the late stage of the process required to minimize: on the one hand due to the use of high-quality, high-performance parts makes maintenance and repair workload reduced; on the other hand the total installed capacity power (energy) decreased, but also to make use of cost savings.

double girder gantry Crane Category

Crane means within a certain range vertical lifting and carrying heavy loads of horizontal multi-action lifting machinery. Also known as cable car. At present, the major heavy lifting equipment Ltd. Guangdong Shun launch has gradually canceled hoist with function. The main features of terrains are: its driving cab and crane cab combined, is evolved by the crawler crane (crawler), will track and walking part of the running gear bracket into the chassis has a tire to overcome disadvantage of ship gantry crane crawler crane (crawler crane) track shoes on pavement damage, belonging to material handling machinery. Lifting equipment to do some work is characterized by intermittent exercise, namely a working cycle Reclaimer, transport, unloading and other movements of the respective agencies are working alternately, development and use of cranes on the market more widely. Because they are not leg slings and hoists with often some accident, driving speeds are more cranes (crawler) fast; job stability, lifting capacity, can hoist walking within a specific range, but must ensure that road smooth solid tire pressure to meet the requirements, hanging above the ground shall not exceed 50CM; ban with a load of walking long distances. To ensure the safety of operations, the current domestic basically prohibit the outriggers are not hoisting operations.

Bridge crane Overview

bridge gantry crane is Hengjia in workshops, warehouses and feed field empty for material lifting lifting equipment. Because of its ends situated on tall concrete pillars or metal stents, shaped like a bridge. overhead gantry cranes lay on both sides of the bridge along the elevated track longitudinal running, you can take full advantage of the space below the lifting bridge materials, unimpeded ground equipment. It is the most widely used, the largest number of a lifting machinery. Overhead crane lay on both sides of the bridge along the elevated track longitudinal run, lifting the car along the track laid on the bridge sideways, forming a rectangle the scope of work, you can take full advantage of the space below the lifting bridge materials, not hampered by ground equipment. This crane is widely used in indoor and outdoor warehouses, factories, docks and outdoor storage yard and other places.

Crane Maintenance

With the rapid development of China's urbanization, the crane with its strong scalability, large capacity characteristics, in terms of construction, cargo handling and other playing an increasingly large role. However, due to the risks involved in the field of mechanical and electrical construction cranes and aerial work operation, etc., it also became a construction safety Each crane driver must pay attention to the matter.
1. Do not pay attention to maintenance from the weight of limiter does not regulate the limiter from the weight on the use of, or even deliberately do not, or increase the limit value, so that from the weight of limiter should not restrict the protective effect.
2. The lifting mechanism brake not adjusted too loose. When overweight high speed decentralization, due to the inertia of the system could not produce coasting fall.
3. Wrap rate mechanism, when the 2-for-4 magnification switching magnification is not in place, did not pay attention to check, or no increase insurance sales, in lifting the pulley activity will suddenly drop, causing a major accident.
The twisted rope play rope serious disorder, not immediately removed, forced to use.

Jib crane classification

Jib crane series can be divided into:

1,slewing jib crane

2, JKBK slewing jib crane

3, mobile jib crane

4, wall mount jib crane

5, wall jib crane line

6, light gantry jib crane

7, crank jib crane

8, arms jib crane

Jib crane basic overview

wall mount jib crane is developed in recent years sized transporting equipment, unique structure, safe and reliable, with high efficiency, energy saving, time-saving, flexible features, three-dimensional space was within the random operation, a pitch, intensive transporting of the occasion, more than other conventional lifting devices also demonstrate its superiority. The products are widely used in various industries in different places. wall traveling Jib crane for light intensity of the work, the crane from the column, the pivot arm and hoist rotary drive unit composed of the lower end of the column is anchored in a concrete foundation by the cycloid means to drive the arm swing, electric hoist jib beam for about a straight line running and lifting heavy objects. Crane jib hollow steel structure, light weight, span, lifting capacity, economical and durable. Built-in line jib cranes MODE-type lathes, the use of special engineering plastics go round with rolling bearings, friction is small, brisk walking; small structure size, especially help to improve the hook travel.

Features information jib crane

Jib crane is to adapt to modern production and the production of new generation of light lifting equipment, with the high reliability of electric chain hoist is particularly suitable for short distances, the use of frequent, intensive lifting operations, with high efficiency, energy saving, easy, accounting land area is small, easy to operate and maintain.
1, slewing jib crane
slewing jib crane known as Column jib crane, from the weight in 125Kg-5000Kg, lifting force is developed by Kay products, can design customized special lifting equipment according to customer demand.
Column jib crane has a novel structure, reasonable, simple, convenient operation, rotating flexible, large work space, etc., is energy efficient material lifting equipment, can be widely used in factories, workshop production lines, assembly lines and machine tools, the at work and warehouses, docks and other occasions heavy lifting. Slewing jib crane jib according to their use of steel can be divided into: BZD type and BZD-JKBK type.
2. Move the jib crane
The machine is more flexible, and wide adaptability, is a highly efficient automatic production line necessary for a separate emergency lifting equipment, which can ensure that the production line has been smooth. Kay lifting production EBZ mobile electric jib cranes, the product has a flexible, wide adaptability, is a highly efficient automatic production line necessary separate emergency lifting equipment, which can ensure that the production line has been smooth.
3, wall jib crane
Wall-type jib crane, also known as wall hanging, can be divided into: BX type wall-type jib cranes and BX-JKBK type wall-type jib lifting weight 0.125T-3T
4wall mount jib crane
Line wall jib crane line, also known as wall hanging, is based on pilasters Kay lifting jib crane on the development of a new type of material lifting equipment. The machine running rail installed in the plant's cement column do longitudinal movement along the rail, while electric hoist can be selected to complete the lifting arm along the lateral and vertical movement. The machine greatly expanded range of operations, more effective use of factory space, the use of the effect is more ideal.
5, crank jib crane
Boom crane jib crane, also known as crank, a new structure, flexion freely, flexible operation, energy efficient features. In operation, pushed the button will load was lifted by beam bending and rotational movement, avoidance of objects within the control of the working area, maximize the working area. Gently push and pull, we can achieve a position of any of the work area. Boom crane for machinery manufacturing, railway, chemical industry, light industry, production or maintenance of occasions, particularly in dense device, a short distance lifting, for frequent application of the product line will enhance production efficiency.
6, arms jib crane
Also known arms hanging, double jib crane

Overhead crane works

bridge gantry crane mainly electric drive, usually operated in the cab, there are remote control. From the weight of up to 500 tons, span up to 60 meters. Great starting weight of single girder bridge cranese for ease of installation and adjustment, the driving device often used universal coupling. Crane agency generally only four driving and driven wheels, if great weight, increase common approach from the wheel to reduce the wheel pressure. When the wheel more than 4, it must adopt a balanced hinged frame means that the crane load is evenly distributed on each wheel.

Gantry cranes are mostly horizontal luffing system

Steel factory equipment  the weight and center of gravity of each boom system luffing process is almost no vertical displacement. One way is by adding events counterweight to balance the lifting boom system changes the center of gravity of the pitch synthesis when this method is more convenient arrangement, work is also more reliable and widely used. The semi gantry cranes second method is to rely on institutional characteristics of the boom system to ensure that the movement trajectory when the center of gravity close to the level luffing synthesis, No activity counterweight.

Crane supplier  along the trajectory of the heavy lifting to move closer to the horizon in the luffing process, compensation methods and compositions can be used boom law. Compensation Act by the special storage system automatically retractable rope hoisting rope luffing appropriate process to compensate boom lift spreader vertical displacement caused. Arm method is to rely on institutional characteristics guarantee Arm arm ends move closer level luffing process. Both methods are widely used.

Gantry crane use can be divided into three categories

Use can be divided into three categories:① cargo handling portal crane : mainly used in ports and open stockyard, handling with grab or hook. From the weight of not more than 25 tons, not with the magnitude of the change. Higher operating speeds, it is often an important indicator of productivity.② portal crane manufacturer， shipbuilding gantry crane: mainly used for berth, floating docks and outfitting scene, performed splicing hull, outfitting equipment and other lifting work, with a hook as a spreader. Maximum lifting capacity of 300 tons, from the weight of large amplitude is reduced accordingly. How stall lifting speed, light weight lifting when lifting speed can be increased. Some agencies also work with micro-devices to meet the installation requirements. Gantry height greater, can be adapted to the requirements of large lifting height and substantial job, but the operating speed is low, job productivity is not high.

③ construction and installation with portal cranes: mainly used in irrigation dam hydropower station, hoisting equipment and prefabricated parts, usually with hooks. From the weight and the operating speed is generally between two cranes before. It has good transport machine disassembly, spreader decentralization depth, can better adapt to temporary work and work on the bridge and other features.

More than half gantry crane with box type and truss structure

Semi gantry cranes  is between an overhead crane and gantry crane between semi gantry cranes have only one leg crane bridge crane as the other end as the plant crane beam frame, frame orbit on a plant commonly known as day orbit, the orbit on the ground, said ground rail. Semi-gantry crane hoisting mechanism, trolley traveling mechanism and bridge construction, and bridge crane basically the same. Since the span, crane operating agencies they use are driven way to prevent the crane operation produce skew increases resistance, even accidents, in order to prevent falling or tipping lines in strong winds, wind measurements and is equipped with interlock operating agencies Crane rail clamp. 

 Semi-gantry crane electric hoist normally, so the rated capacity is usually 16 tons or less.Portal crane Use of box type and truss structure, the most widely used. You can carry a variety of bulk materials into items and, from the weight of 100 tons, a span of 4 to 39 meters. Grab common with the work of a higher level gantry crane. Common gantry crane mainly refers hook, grab, electromagnetic, hoist gantry crane, but also includes semi-gantry cranes.

Line hanging installation precautions

Line hanging belong to special equipment, in order to ensure the correctness of the line hanging installation, the following line hanging Shandong manufacturers to tell you about the line hanging installation considerations.
1, line hanging relatively large, which includes a lot of electrical equipment, transport it difficult match, where many parts are then assembled together.
2, when the track means to the horizontal line hanging are running on the track, the two tracks must be on a plane, testing the correctness of the track means.
3, device maintenance equipment, such as brakes, brakes, limit protection and so on.
4, overload limiter installed correctly, beyond a certain use, can play a sound effect.
5, the rope can not loose, nor off shares, release and so on.
Installation Notes on the above line hanging, we must pay attention to. Before installing line hanging, be sure to read the product manual or detailed advice single girder bridge cranes.

The role of double girder crane safety gates

No matter what job security is always the first one, especially in this heavy machinery. Let's tell you about the role of double girder crane safety doors.
Double girder crane safety protection on the hatch door, cab doors and access doors will have a door switch, inspection, maintenance and when the double beam foundry cranes operation or maintenance personnel to the crane, you must open the hatch door to Crane go on stage, or open the access door to the crane rail beam, then opened the door electrical switch normally closed contacts open, the main contactor release electrical box, and then cut off the crane power supply, so that the foundry overhead crane can not start at the same time This protection allows maintenance personnel to avoid the threat of the car on the bridge slip line charged, but also to prevent injuries to others, start car maintenance personnel

Protective effects of zero double girder crane

portal harbour cranes generally consists of mechanical, electrical and metal structure consists of three parts. grabbing crane in the indoor and outdoor industrial and mining, iron and steel industry, railways, ports and logistics flow and other departments and establishments have been widely used in the double girder crane Also note that the protection of its zero
A crane used for many years, its shock deflation, poor contact sometimes produce false failures. In this case the operator will get an electric shock replaced with a new, not startup problems can be solved. In checking of the cam controller arrangement, the only When each controller handle in zero position, lifting, cars and carts controller zero contact only in the closed state.

Single girder crane requirements rules

With the rapid changes in society, the industry is also developing. Are widely used in factories, warehouses, and other single-girder crane on what the rules require it? Xiaobian bring everyone to take a look.
First, before the work,
1, column mounted jib cranes with a cab driver to take over before driving, coping hook, rope and safety devices and other components according to the requirements of check card check, unusual circumstances, should be excluded.
2, ground handling of overhead crane supplier, there should be someone in charge of the class according to the requirements of check card check, unusual circumstances, should be excluded.
3, the operator must confirm the catwalk or no, we can close the main power on the track. When the power breaker locked or have signs, the person should be removed only after the original closing the main power supply.
Work

jib cranes

In life, the crane can be seen everywhere, especially in the construction industry, machinery industry in the use or purchase of a ship gantry crane, we will usually crane performance parameters according to consider the performance of the crane, but in many cases, the instructions on the The main performance parameters of the crane is usually a simple alphanumeric instead, jib cranes for many laymen, it was like watching bible. So what these letters mean? What do they represent? Here you by Shandong crane manufacturers to detail describes the main indicators of performance parameters of the crane.

Note the use of the bridge crane

As the economy continues to develop, overhead crane company continue to grow, is widely used in construction, transportation and other industries. Our company is a supply line hanging Jinan well-known enterprises, over the years, the quality of products subject to unanimous praise in the industry, and more by the trust of customers for a better understanding of line hanging, semi gantry cranearticles below explain Cautions line hanging, and I hope for your help

Zoomlion: pump vibration use and parameter adjustment

single girder gantry cranePump vibration principle belong active tracking pumping commutation frequency compensation to a boom cycle cylinder pressure, to achieve the end of the minimum amount of vibration, the vibration control technology has an international patent, tested performance testing and actual site, the amount of vibration can be greatly reduce work to improve truck safety and fatigue life are of great help. The system automatically starts after the pumping capacity greater than 50 percent, according to production needs but you can turn off the valve to determine if the vibration control system is enabled.
How to use:
1. boom commenced guaranteed to be compensated at the fuel tank joint angled (≤170º), 37 m pump cylinder is compensated for the 2nd boom cylinder, 45 m, 48 m boom truck for the 3rd cylinder , 56 m boom cylinder pump is on the 4th;electric magnetic overhead crane2. When the pumping operation is not performed, turn off the valve control system;3. Under normal circumstances, in order to save energy accumulator, reducing vibration control device worn in the small displacement pumping or pumping level, the system can be shut down;
4. If the level of pumping large displacement, vibration will be larger boom ends, you can choose to open the vibration control system, under normal circumstances, the vibration will be effectively alleviated;
5. If the open valve, but increased vibration, under the premise of ensuring safety, the following manner to adjust the phase angle until the optimum level of vibration, generally have no need to adjust the power-up time;
6. If the adjusted parameters, via SMS to the new parameter information back to the service personnel
7. Adjust the remote control must be in the state, this time all the buttons panel controls include horn buttons are invalid, so the adjustment is completed as soon as possible, do not affect use.

Crane routine maintenance

overhead crane supplierHow can we extend the life of truck mounted crane it? Crane usually use oil, be sure to choose a high-quality, excellent oil, high-quality oil in use can not only extend the life of truck mounted crane, but also in the the slope of the road will not feel difficult, even for pulling heavy cargo can easily climb.
There we usually use truck mounted crane ready to go out when we should pay attention to check there is no appearance of Crane tilt, there is no serious tire wear, Truck crane chassis has no oil spills, leakage phenomenon, there are screws no loosening. Also note that the usual crane, interior and exterior cleaning is also important.double girder overhead travelling craneFinally, the owners hope that Crane, Crane at open daily maintenance are able to focus on starting these small details, and wish you the owner of traffic safety, bon voyage.

Tower crane safety management knowledge

overhead bridge cranesAs the crane practitioners, in addition to playing a "mainstay" role in building construction, but also an important part of safe production. According to long-term service crane driver, commander summed up the crane driver safety fifteen issues, hoping for crane training helpful.
1, as a crane driver, the body must be healthy, two should maintain good eyesight, no color blindness, hearing no sensitive ears. Must pass safety training, special operations personnel to obtain operating permits before an independent operation.2. There must be sensitive crane hook, rope drum, broken rope safety device, you must have a valid ultra limit, amplitude limit, walking limit, torque limiter, the cab lifting limit, etc., up the ladder should retainer.electric wire rope hoist manufacturer3, the crane driver must be familiar with the operation of the crane's performance structure, operating according to the relevant provisions of the crane is prohibited illegal operations. Should be familiar with the mechanical maintenance, repair knowledge, according to the provisions of the machinery for routine maintenance. It is particularly worth mentioning is that the crane used during maintenance of its useful life should also check out the specification and compliance departments.
4, the crane driver before the job should lift rail tongs, remove obstacles on the track, tighten the screws good plywood; try hanging should be checked before use.
5, crane personnel when the job should be open cab window, pay attention to traffic signals; cab heating in winter, there should be fire, electric shock measures.

Bridge crane

electric wire rope hoist manufacturer Bridge crane bridge is a bridge crane runs on an elevated track, also known as Crane. Bridge crane lay on both sides of the bridge along the elevated track running lengthwise, lifting the car along the track laid on the bridge sideways, forming a rectangular scope of work, you can take full advantage of the space below the bridge lifting materials, not hampered by ground equipment.
Bridge crane can be characterized so hang on hooks or other devices extract heavy lifting in space to achieve vertical or horizontal transport. Bridge crane include: lifting mechanism, large car run institutions. With the action of these organizations rely on, can in a certain weight lifting and handling cubic space. Bridge crane, crane, metallurgical bridge cranes, cranes, etc. are examples of such cable.gantry crane manufacturers

Bridge crane is widely used in indoor and outdoor warehouses, factories, docks and other places open storage yard. Bridge crane bridge crane can be divided into ordinary, simple beam bridge crane bridge crane and metallurgical dedicated three.
Ordinary general by lifting trolley bridge crane, bridge run institutions, bridge metal structures. Lifting trolley lifting mechanism also consists of trolley run institutions and small frame of three parts.
Lifting mechanism includes a motor, brake, reducer, drum and pulley. Motor through reducer, driving drum rotation, so that the rope around the roll or from roll down to lift heavy objects. Small frame is the bracket and install the hoisting mechanism and trolley run institutions and other parts of the frame, usually welded structures.

Crane Maintenance

electric hoist manufacturers 1), the appearance of the bridge crane: a comprehensive clean appearance, so that no dust, no yellow robe. Check for cracks, open welding.
2), carts, trolley: ① Check and tighten the drive shaft housing, gearbox, coupling and shaft, the key is loose; ② Check and adjust brake wheel clearance to make it uniform, sensitive and reliable.
3) Check the overhead crane reducer mainly to see if the oil spill. Cabinets abnormal sound operation, it is necessary to open the lid to check. Usually bearing damage or gear backlash is too large, severe tooth wear and other reasons.
4), lifting winch: ① Check the wire rope, hook, pulley is safe and reliable, wear exceeds the specified value should be replaced. ② Check and adjust the brakes, make it safe, sensitive and reliable.
5), overhead crane wire rope inspection. Inspection should focus on observation broken wire rope wear, kinks, rust, etc., for some wear, broken wires more serious position but not excessive, do the mark to focus on tracking the retest. Pay attention to check the safety rope in the roll stopper is valid, whether the rope reel clamping plate and plate number is appropriate.
6) Lubrication: Check all parts of the oil, fuel, as required to join or replace oil.jib crane manufacturers

7) Check for overhead crane pulley. Focus on the bottom is excessive wear of cast iron pulleys and whether there are cracks. For the balance wheel pulley block overlooking Young organization, because usually the case it does not move, it is easily overlooked. So, be sure to check before installing the flexibility of its rotation, otherwise, the installation of wire rope around Jan overlooking length and tension can not be used to automatically adjust the balance wheel, so that an increase in altitude adjustment rope Young overlooking the difficulty and risk level jobs.
8) Electrical: ① check the limit switch is sensitive and reliable; ③ check the electrical box is sensitive and reliable operation of all electrical appliances; ③ Check the motor, bells, lead is safe and reliable; ④ check signal is good.
9) Check for loose coupling each bridge crane or even "scroll keys." Focus on checking the flexible pin coupling elastic rubber ring without abnormal wear of tooth couplings to pay special attention to the ring gear wear. Due to installation accuracy, between the two axes at a greater offset, the performance of the entire ring in a short time will soon be bald. If such a situation, prone to serious accidents in the lifting mechanism.

Note crane

electric winch manufacturers(1) Each crane nominal weight must hang signs in conspicuous places.
(2) work, it was not allowed to transport people or hook on the bridge.
(3) No operating permits and drink are not allowed to drive a crane.
(4) the operation must concentrate, not allowed to talk, smoking or doing things unrelated.
(5) To clean the car; allowed misplacing equipment, tools, flammable, explosive materials and dangerous goods.
(6) the use of a crane is not allowed supercharged.
(7) The following are not allowed lifting: bundling is not strong; mechanical overload; signal is unknown; stayed; buried or frozen objects in the ground; it was on was hanging objects; no security measures flammable, explosive devices and dangerous goods; overfilled liquid items; rope does not meet safety requirements; lifting mechanism is faulty.
(8) Crane runs on the line when there is no obstacle, hook or hanger and hanging objects underside, must more than 2m from the ground. If you cross the barrier, should be more than 0.5m tall obstructions.metallurgical electric hoist
(9) for lifting the weight of less than 50% of rated items, allowing simultaneous operation of both institutions; hanging from the weight of more than 50% of the rated items, only can an agency action.
(10) has a main and auxiliary hook bridge crane, do not increase or decrease the main and auxiliary hook (special exception) at the same time.
(11) allowed or hammering and welding work on the object to be lifted the following items (if you can support).
(12) must be after a power outage and when power switches wears a sign the job before inspection or repair work done. If you must live operations, there must be security measures to protect and have someone care.
(13) can not just throw things down from the car.

(14) limit switches and interlock protection device should always check.
(15) not allowed to touch the limit switch as a parking solution.
When there is a problem (16) lift brakes, lifting weights is not allowed.
(17) was hanging objects are not allowed to run in person or over the equipment.
(18) when the crane unit of welding, to specifically set the ground, do not allow the use of body ground.
(19) The hook is in the lower limit position, must retain more turns on the reel safety ropes.
(20) does not allow the crane bumped, but does not allow the use of a crane to promote another crane to work.
(21) lifting heavy objects, liquid metal, when explosive and dangerous goods must be slowly lifted from the ground 100 ~ 200mm, brake test reliability.
(22) Repair and examination lights, the voltage must be less than 36V.
(23) All electrical equipment overhead crane enclosure should be grounded. Such as trolley track is not in the main beam welding, welding ground measures should be taken. Grounding line can be greater than the cross-sectional area of 75mm2 bare copper or galvanized flat iron or greater than 30mm2 10mm2 galvanized round. Ground position or crane cab body should be more than two. Ground resistance to any point on the power neutral between crane shall be less than 4Ω.
(24) to have regular check security technology, good pre preparatory work.

Crane inspection items

electromagnetic overhead craneOverhead crane safety inspection in order to ensure safe operation of the overhead crane, crane operation required during some routine security check on the project and highlights are as follows:
(1) lifting height limiter, travel limit switch and all the positive properties of interlocking institutions
(2) comply with the safety requirements of the major components: the opening is increased less than 15% of the original size, the torsional deformation of less than 10%; hook bushing wear plate is less than 50% of the original size, the mandrel plate hook wear less than 5%, no peeling burr, welding. Hanger hook and pulley no obvious defects. The surface of the wire rope wear, corrosion is less than 40% of the diameter of the wire, broken wires in one lay length within less than 10% of the total number of wires, no breaks, no thinning, no core prolapse, dead twisting, compressional deformation annealing, burning phenomenon.electric hoist manufacturers

End connections and fixed rope clips, clips, wedge block connection intact, no loose plate at least two, the number of no less than three catches. Roll no cracks, connections, fixed no loose; cylinder wall wear less than 20% of the original wall thickness; secure volume of not less than two laps, reel and rope diameter ratio of compliance. Balance wheel fixed intact, shall comply with the requirements of the rope. Brakes no cracks, no loose, no serious wear, brake clearance on both sides equal right size, there is sufficient braking force, brake wear with less than 50% of the original thickness.
By conventional overhead crane safety inspection, to prevent accidents, reduce equipment accidents, improve equipment operation rate and reduce maintenance costs etc play a significant role.

Market situation crane

"Guidance Catalogue (2011 version) industrial restructuring," the National Development and Reform Commission promulgated clear that more than 400-ton crawler crane and was elected as a new industry, "encouraged" products, crawler cranes prospects.
Three quarters of 2011, China's heavy truck industry sales of 712,000 total. Heavy-duty truck market is entering a downward phase:
First, the industry increasingly stringent policies, regulations promulgated by the state a lot of safety, environmental protection, energy conservation, etc., while the implementation of more stringent aspects of the trend. Formulation and execution of these regulations increase, will result in the heavy truck industry product technology requirements increase, while production costs will be further improved.metallurgical electric hoist

Second, the market is increasingly competitive. Our truck market has been faced with global competition, although China's heavy truck industry, the market share of domestic brands accounted for the vast proportion, but this does not represent the future pattern will remain, product technology to improve the localization of manufacturing costs and other factors, in the heavy truck industry make future changes in the competitive environment.
With the continuous development of the crane industry, more and more companies were added to the crane industry in the past. High full noted that risk of construction machinery, including technical risks, supply and demand and other economic risks and the risk of fluctuations. Current engineering machinery part of the product's core technology is mainly reflected in the overall design and technology integration, if companies can not timely research and development of new technologies, new processes and new products to meet market requirements, the product may be at risk of being eliminated.
Because of China's construction machinery industry is extremely competitive, especially international construction machinery giant inroads into the Chinese market. Compared with foreign competitors, China's enterprises in terms of product range, research and development, technology, capital size and brand influence, etc. There is a big gap. In addition, fluctuations in the world economy has or will bring some uncontrollable risk in the industry. Engineering machinery industry investment in infrastructure projects as industry-driven, if future economic growth rate slowed down, down the scale of investment in fixed assets

Crane Maintenance

Crane maintenance necessarygantry crane manufacturers
Care and maintenance of good not only directly related to the safe use of machinery and cranes, crane machinery and equipment also decide whether to maintain the vitality and extend the life of the follow-up to create more economic benefits. Crane in long-term use, a number of components and connections are due to vibration, friction and other factors inevitably loose, corrosion, aging, damage and so on. In order to extend the life of the crane, reduce equipment failure rates, reduce and eliminate security risks, regular maintenance of equipment for the crane to do the maintenance work is very necessary and very important. Only regular checks, maintenance and repair crane, its parts need lubrication for lubrication, make a firm needs to tighten its parts, maintenance, and replacement parts for its vulnerability to promptly eliminate hidden faults equipment, reduce accident incidence, making safer crane operation, in order to create a better economic benefits.explosion proof electric hoist
As the use of a crane unit, in addition to strict compliance with the requirements of the operator

Off the technical specifications and special equipment safety procedures, but also attaches great importance to its care and maintenance, at the same time create economic benefits for the production of equipment, but also put some money into the maintenance and repair work to go crane equipment, regular maintenance timely maintenance, to better ensure that the equipment and personal safety.
Regular maintenance content
Hydraulic system state detection, replacement of wear, deformation, cracks, corrosion parts, electrical control systems, check feeders, controllers, overload protection, safety protection device is reliable. Caused by mechanical crane test run to check the leak, pressure, temperature, vibration, noise and other reasons failure symptoms. After observing the structure of the crane, bearing, transmission parts of the state of subjective testing, understand the state of the art crane machine, check to make sure the fault source anomalies. The driver is responsible for the routine maintenance project work, the main content is clean, lubricate transmission parts, adjusting and tightening job. By running the test the reliability of safety devices sensitive listener running any abnormal sounds

Types of cranes

electric winch manufacturers Widely used in lifting handling machinery, cranes usefulness port, workshops, construction sites and other places in and lifting equipment, rescue, lifting, machinery, rescue
Crane species: A. Removable: truck crane, crawler cranes, hoists and other lines. B. Fixed: dock cranes, tower cranes, gantry cranes, etc. The name of the crane is a unified title. Commonly referred to as multi-finger crane truck crane, crawler cranes, RTG.
Security Guide
1, overloading or weight lifting is not hanging unclear;
2, the command signal is not clear is not hanging;
3, tied up, hanging is not strong or unbalanced, may cause slippage not hanging;
4 When not hanging, hanging objects floating on someone or glove;
5, structure or component defects affecting safety or when damage is not hanging;
6. In case of pulling clear of embedded objects do not hang;
7, workplace dark, unable to see the venue, time is not hanging hanging objects and traffic signals;
8, was among hanging objects at the edges and not padded when bundled wires do not hang;
9, crooked pulled oblique lifting weights when not hanging;
10, crane safety device incomplete, unreliable, and so do not hang.
There are high-voltage areas not work.
12. Cloudy windy rain does not work
Truck cranemetallurgical electric hoist
Truck crane known as the crane,
The concept car is the car hoists and cranes combined can not assemble itself in the form of direct work.
The advantage is convenient and flexible, high efficiency, fast transitions, improve work efficiency.
The disadvantage is that the terrain, large equipment (1000-2000 tonnes) can not be completed. (Maximum tonnage of 3200 tons truck crane.)
Crawler

Crawler cranes are referred to, is an off site is crawler, by crawler cranes.
The advantage is lifting large, heavy lifting can walk. Has strong lifting capacity.
The disadvantage is that disassembly of trouble, the boom can not be freely scalable, limitations too. Suitable large factories, working in the factory area. Crawler Pictures
RTG
RTG is the use of tire rotation chassis walking boom crane. RTG is the lifting mechanism is mounted on a special type of tire and wheel heavier chassis consisting of a whole slew cranes, its upper structure is basically the same with the crawler crane. Truck crane is lifting a tire. RTG picture
The advantage is the body short, mobile and flexible operation, high efficiency.
The disadvantage is that the terrain, large equipment can not be completed

Crane origin

explosion proof electric hoist Cranes are commonly known as crane, crane (Crane) is a kind of lifting machinery, is a for loop, intermittent motion machine. A work cycle comprising: extract means to extract from the articles lifted, and then moved horizontally to the appointed place down the article, followed by reverse movement, so that the extract means to return the home position for the next cycle. Such as fixed-slewing cranes, tower cranes, truck cranes, tires, crawler cranes.
Within a certain range of vertical lifting and carrying heavy loads of multi-level action lifting machinery. Also known as the crane. Are material handling machinery. Crane's work is characterized by intermittent exercise to do that in a work cycle reclaimer, transport, unloading and other movements of the appropriate agency is working alternately. Crane
electromagnetic overhead craneCrane prototype
Chinese ancient irrigated farmland is used orange jib cranes prototype.
The 14th century, Western Europe and the emergence of the human animal driven rotating jib cranes.

The early 19th century, there has been a bridge crane; Crane important wear parts such as shafts, gears and spreader began to use metal materials, and began to use hydraulic drives.
Late 19th century, steam-driven crane gradually replaced the water-driven crane.
Beginning in the 1920s, due to the rapid development of the electrical industry and internal combustion industry to motor or internal combustion engine for a variety of crane power plant is basically formed. Crane