MD-type electric hoist

MD-type electricelectric hoist, it has a light weight, simple structure, in the form of a novel, smooth characteristics, when running with a small car, MD electric Electric wire rope hoistcan be made straight and curved reciprocating circular motion in the horizontal direction, which can be in made on the beam overhead track use, but also with other metal structures supporting electric or become subject to manual single-beam, dual beam, cantilever, gantry cranes and stacking etc.

PA mini electric hoist

Mini electric hoist, also known as the civilian electric Electric wire rope hoist. For various occasions, can enhance the cargo of 1000 kg or less, mini electric hoist is particularly applicable to high-rise buildings tenants to lift heavy items from downstairs. Simple structure, easy installation, small size, and with a unidirectional power as a power source. Mini electric hoist in the production design are up to international standards to ensure the safety of the use of motor heat sink made of cast iron structure, improve the service life. Mini electric electric hoist speed can reach 10 m / min, rope length is 12 meters early design (longer can be customized), the hook, the hook specially designed with advanced settings, greatly increasing the mini electric hoist lifting weight mini electric hoist 220V civil power, especially for daily use, industrial production lines, freight logistics and other occasions

Proof electric hoist

Explosion-proof electricElectric wire rope hoist for the occasion containing flammable gas, vapor and air to form an explosive mixture of, with a compact, light weight, small size, large lifting capacity and so on. HBJ series explosion-proof electricelectric hoist for having IIA, IIB, IIC class, temperature class T1 ~ T4 group place flammable gas or vapor and air explosive gas mixture composition.

Electric chain hoist

Electric chain hoist chain is soldered Park as the bearer of the Electric wire rope hoist. Compared with the wire rope hoist, the structure more compact, cheaper. PK-type electric chain hoist, the product has a compact structure, small size, light weight, easy operation, safe and reliable. PK-type electric chain hoist can be installed on floating beams, curved rails and fixed-point lifting heavy objects, especially in the construction of the plant is not suitable for low bridge cranes, beam cranes places, and the choice of wire rope hoists volume the place is too large, PK-type electric chainelectric hoist has its unique advantages. Because of the small size, with a variety of ways according to

installation, in addition to the use of fixed suspension, you can also configure the chain sprocket car, electric car run for in a clean studio, laboratory; you can plant in a single room for the high-precision machine tools, machining center, engine testing and other commissioning lifting workpiece. Configured to run electric car simple structure, light weight, easy handling, permanent installation, can also be used temporarily. Electric chain hoists are widely used in the wharf, construction and modernization of production lines

CD1-type wire rope hoist

CD1 wire rope Electric wire rope hoist is a small light lifting equipment, with a compact, light weight, small size, parts versatility, easy operation. CD1 wire rope hoist is a small light lifting equipment, it can be installed in a single girder crane, bridge crane, the gantry cranes, jib cranes and other cranes, a little change, you can also do hoist, CD1 electric electric hoist lifting normal speed, to meet the requirements of the general situation, and suitable for factories, mines, ports, warehouses, shops and other venues to use.

Crane hook group fault detection method

To more effectively improve the overhead Shipbuilding gantry crane lifting capacity, reducing the need for wire rope diameter, the hook is formed integrally with the pulley, which is the hook set. Lifting large spreader, usually selected hook group. Hook set is divided into long and short hook hook group group. When installing a balanced long hook group pulley above, can be used to override the singular pulley block, which play a greater weight. Short pulley double the rate applicable to pulley block, which plays a smaller weight.
Crane hook surface cracks are not allowed, or should be scrapped. Test methods: visual, or 20 times the magnifying glass colored checks. Use of the hook for about 10 years, should be the disintegration of testing and inspection, poor working conditions, frequent use of a crane, every 5 to 6 years of testing that should be checked. Focus on examination of three dangerous section.

Check the hook torsional deformation, when the hook body torsional exceed approximately 10 °, should be scrapped. Inspection method: Measuring crossed method. The overhead Wall mounted jib crane hook on the platform, with a vertical dash feet and adjust power block, horizontal centerline alignment hook shank, find the intersection of the centerline of the hook shank hook tip centerline, from the hook tip the center point of the hook shank to do vertical centerline, the distance to the intersection of the pedal measured out, and then calculates the angle.
Check the amount of wear dangerous section of crane hook, when the actual size of less than 90% of the original size (using GB10051-88 hook new materials of "lifting hook" provides 95%), should be scrapped. Hook nut or insurance are not allowed to wear parts.

Double girder crane precautions during the use

Double girder overhead crane is lifting the transport of modern industrial production and production process to achieve brake mechanization and automation of important tools and equipment. Double girder Light duty electric winchs 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.
Double girder cranes stop Precautions
1, after the job is completed, the crane open to designated locations: one end of the car to open the cab, hook rises, all the control panel to "zero", cut off the power and wipe clean and keep clean.
2, good operating records and shift work shift. Double girder crane use surface cracks will appear, there are a variety of reasons

1, the load force can not change the direction of the back and forth: double girder crane lifting process, moving back and forth due to heavy attack has changed, especially in the severe load condition, the formation of discontinuity average beam, the beam will attack crack form life began double girder crane lowered.
2, wind can affect double girder electric hoist: When using double beam crane outside after midnight, the wind blowing through the inevitably large wind start, double girder cranes will attack shaking phenomenon, the appearance will attack cracks.

Electric single girder crane girder institutional analysis

Electric single girderelectric hoiststructure has 70 years of history in the form of a single beam of variety, such as: add truss beam, I-beam tube plus, plus a triangular box girder beams, rectangular box girder beam plus more.
These single girder crane girder composite section has many deficiencies, such as the thickness of the beam height is too high, and cover the same web (n-type orange), material utilization is not reasonable, composite section of the welding process and repression increase the cost of production.
In recent years, the domestic electric single girder crane (LDA type 1 to 20 ton electric single girderElectric wire rope hoist http://www.cn-cranes.com/html/danliang/40.html) girder section some new patterns. In this paper, local bending stress flat flange steel plate at the edge of the wing hoist wheel pressure effects arising from analysis.

First was the distribution of local bending stresses measured by simulation, structural analysis and then use the MAS program to compute the finite element model analysis, the maximum stress calculation charts and curves. From the experimental results and finite element analysis results obtained local maximum bending stress flange plate mainly in the loading point and the corresponding free edges and roots.

Crane parts of the bearing detailing

In the Wall-traveling Jib Crane or the gear unit is in the wheel bearing housing, if the inner race of the bearing and the radial direction of the radial thrust bearing is a fixed position of the shaft, so in these shafts when the shaft is rotated, the device an outer race means are fixed on the bearing bore, which is fixed on the bearing means of the bearing sleeve inside, also according to the type and manner of installation of the bearing means, so that both is used according to the demand determined.
Lifting accessories bearing device fixed to determine the way in time, but also need to take into account the purpose and structure of the organization, as well as transmission equipment type, between the bearing type of bearing, the force of nature, the use of the size and direction of the device distance, bearing on the device as well as the general arrangement and certain conditions of use.

Cantilever crane (LX-A electric single girder overhead crane http://www.cn-cranes.com/html/xbd/33.html) using the "Job Status switch" position, we must ensure that hanging with the use of consistent with the arm in the form of a job, or it may cause damage to the crane or accident. Because of different models, the above will vary, according to some automatic overload prevention device Instructions executed. After the operation, the cantilever Electric wire rope hoist boom sections should be fully retracted and placed on the front of the boom stand, hang hook.
  Bearings are single girder crane very important accessory, lifting accessories bearing fixed at the time of installation and there are many considerations to be primarily a crane after the bearing type selected for each axis and determine the size of the bearing on the shaft must be selected or the bearing bore on ways and means fixing method, the method is also very important.

Single girder gantry crane electric automatic correction method

Cranes for semi-custom machinery, determine the track size, and other parameters according to your site conditions and requirements
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Large span single girder gantry single girder gantry crane to be automatic correction, the first to analyze the reasons for the deviation and phenomena produced, and then take the corresponding corrective measures. Usually have the following types of electrical automatic correction methods:
1, by comparing the crane just the leg side carts go round and soft leg-side carts go round the actual operation of the line speed, which can be driven with a rubber friction wheel rotary encoder for closed-loop control method for correction;

  2, when the legs just legs and soft sides of the motor speed is not the same, such as the average speed of the motor than just the leg side leg side motor soft fast 1/1000, which can be calculated gantry Semi-gantry crane  pulse encoder input pulse number of methods to carry out corrective PLC;
  3, the angle between the single-girder crane girder with flexible legs more or less than 90 degrees, this method can be installed on top of the soft legs in angular displacement sensor to correct;
  4, directly next to the rail mounted parallel to the leg side and just soft leg-side carts run some sensing point, measured using a proximity switch proximity switch action just the leg side and soft side of the leg and has an input method for PLC input correction .

Lifting Machinery corporate branding process, some errors

Shipbuilding gantry cranes for semi-custom machinery, determine the track size, and other parameters according to your site conditions and requirements
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Brand for lifting machinery enterprises are competitive field full of temptation, a strong brand will be able to bring more benefits for the enterprise. Different companies brand awareness will vary, some companies there are some errors in the branding process. Many companies began to flock to the brand tide, but branding but no one clearly defined.
Want to get better returns in the short term by a surprise move. Brand building is not an overnight, to get the brand firmly imprinted on the minds of consumers, then the single girder crane companies need long-term, overall interests of consumers in the first place will be worth.
  Brand is equivalent to publicity. Part single girder crane ton electric single girder gantry cranecompanies that brand awareness, like a star, like long propaganda work , packed their own to attract more attention of consumers, then what order will own fingertips.

  Brand building is the need to invest a lot of advertising money. Mistakenly believe that brand building is burning money, no in-depth consideration of the fundamental needs of consumers, and this is due to the inaccuracy of the reasons for single girder crane corporate positioning in the process of building the brand caused.

Cable cranes

Cable cranes lifting Wall-traveling Jib Crane known mainly refers to lift weights or extract is characterized along the rail lifting device only. Although there is only one elevator lifting mechanism, but in the elevator, there are many other attachments, so constitute a separate category, which includes: Lifts ship lift and so on. In addition, there are a variety of crane classification methods. For example, according to extract device and use classification, crane hook, grab crane, magnetic crane, metallurgical cranes, stacker cranes, container cranes and rescue cranes; classified by transport mode, a fixed cranes, crane operation , self-propelled cranes, towing cranes, climbing cranes, mobile cranes, truck mounted cranes; by driving classification, supporting cranes, hoisting cranes; by using the occasion classification, shop Light duty electric winch, crane machine room, warehouse crane , storage yard cranes, construction cranes, construction cranes, port cranes, shipyard cranes, crane crest, ship cranes.

Rough Terrain Crane

No domestic tire tire crane Semi-gantry crane. Japan TR200M / 20t RTG, US Grove RT980 / 80ust RTG. Lifting portion is mounted in a special pneumatic tire crane chassis. Combined with an engine on and off, driving speed of not more than 30KM / H, the vehicle width is wider, and therefore should not be long-distance driving on the highway. Has no legs hoists and hoist driving functions for moving away from garages, docks, construction sites and other places of limited hoist operations. Because without legs hoists and hoist travel often some accidents, major domestic companies have gradually lifting hoist travel cancellation feature. The main features of the tire cranes are: its driving cab and crane cab combined, are evolved by crawler cranes, crawler and walking stents have become part of the running gear tire chassis overcome crawlergantry cranes Disadvantages board damage on the road, driving the speed faster than the crawler crane; job stability, lifting capacity, hoists can walk within a specific range, but must ensure smooth solid road, tire pressure to meet the requirements, suspended from the ground shall not exceed 50CM; ban with a load of walking long distances. To ensure operational safety, do not fight the current domestic basically prohibit legs were lifting operations

Truck Crane

Electric wire rope hoist, the country with QY said that if QY20 / 20t double girder gantry crane (truck crane). The crane mounted on a general or special vehicle chassis chassis performance is equivalent to the total weight of the vehicle the same truck, meet the technical requirements of road vehicles, which can be used freely on all types of roads. Such cranes are generally available on both cab off, you must extend the legs when the job is stable. From the weight of a large range available from 8 tons to 1,000 tons, the number of axles chassis, from 2 to 10. Is the largest output, the most widely used type of crane.

Crane

Cranes generally be divided into truck crane (truck crane), tire cranes (RTG), rough terrain cranes, all terrain gantry cranes, crawler cranes (crawler), special cranes. The main features of all-terrain cranes are: its driving cab and Wall mounted jib crane control room set apart, compact, light weight, small size, with good driving performance; the way for the oil and gas suspension chassis suspension, damping effect is obvious; according to automatic leveling uneven pavement frame, so climbing stronger; to achieve all-wheel steering, full-bridge driver, small turning radius, can crab walk, use a wider range; may need to increase or decrease the height of the frame to improve driving performance and capacity; outrigger span, good job stability; unrestricted area in front, 360-degree work; work to be legs, can not load driving.

Electric hoist

There Column, wall-mounted and balanced electric hoist three forms.
① column cantilever Electric wire rope hoist boom can be fixed in a given column around the base of the swing, or cantilever column and turn rigid, support within the base together with respect to the vertical centerline of rotation composed by columns and cantilever cranes. It applies from the weight of small, round or job scope of services sector occasions. General machine tools and other artifacts for chucking and handling. Column cantilever crane use more electric chain hoist as lifting mechanism and operation mechanism, less use of wire rope hoist and chain hoists. Rotation and horizontal movement to use more manual work, only play a greater weight
When using electric.
② wallr electric hoist is fixed to the wall of the cantilever crane or jib cranes can along the wall or on an elevated track running other supporting structure. Wall crane line using the occasion to span large building height larger workshop or warehouse, close to the wall when lifting operations more frequently near the best. Cranes line the walls and above the multi-beam bridge crane or with the use of the service on a wall near a rectangular space, responsible for lifting small light objects, large borne by the beam or bridge crane.

③ balance electric hoist known as balance suspended, 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. Balance electric hoist lightweight and flexible, it is an ideal for lifting small items of lifting equipment, is widely used in factory floor machine loading and unloading, inter-process, automatic line, production line of the workpiece, lifting sand box, parts assembly, and stations, docks, warehouses and other occasions

Jib crane

Arm erecting cranes and bridge crane features basically the same. Available in round and over the job site, used for loading and unloading and installation and other outdoor work, portal Metallurgical hoists, floating cranes, derricks, cranes line the walls and deck cranes.
Arm erecting cranes include: hoisting mechanism, luffing mechanism, a rotating mechanism. With the action of these organizations rely on, can in a certain weight lifting and handling cylindrical space. Arm erecting cranes installed in more than other forms of transportation (moving) tool or vehicle, thus constitutes a rotating Wall-traveling Jib Crane boom started running. Such as mobile cranes, truck cranes, tower cranes, gantry cranes, floating cranes, railway cranes.

Bridge gantry crane

Bridge gantry crane is set horizontally in two legs of the shape constitutes a bridge double girder gantry crane. This crane orbit on the ground, mainly used in outdoor storage yard, shipyards, power plants, ports and railway stations and other places for cargo handling and installation. Gantry crane hoisting mechanism, trolley traveling mechanism and bridge construction, bridge crane with basically the same. Because span, crane operating agencies they use are driven way to prevent the crane operation produce skew increases resistance, even accidents. Gantry crane lifting trolley running on the bridge, some lifting trolley is a jib crane. Both sides of the bridge legs are generally rigid legs; when span of more than 30 meters, usually on one side of the rigid leg, while the other side is connected through a flexible leg and bridge the ball joint, the mast becomes statically determinate system under the external loads to avoid because of the additional stress caused by lateral thrust, but also to compensate for vertical temperature deformation bridge Shipbuilding gantry crane

wind area, in order to prevent falling or tipping lines in strong winds, wind measurements and fitted organization and operation of the crane rail clamp interlock. Trays may be free at both ends of the cantilever; may be cantilevered at one end or both ends of the boom, to expand the operating range. Semi-gantry crane bridge legs at one end and the other end without legs, running directly on the high bench.

Bridge crane

In a rectangular field and over the job, and more for workshops, warehouses, open yard loading and unloading goods, etc., the beam cranes, bridge cranes, gantry cranes, crane cable, carrying bridges.
(1) girder cranes: girder Shipbuilding gantry cranes including single girder crane and double girder bridge crane single girder overhead crane bridge girders using a combination of multi-word section steel and steel or steel type. Often lifting trolley hoists, electric hoist or hoist lifting mechanism as part assembled. Press the bridge is divided into two kinds of support and hanging. The former car beam bridge crane along the orbit; the latter along the suspension bridge truss crane plant in orbit. Single girder overhead crane sub-manual, electric two kinds. Manual single girder overhead crane operating speeds lower bodies, from the weight of too small, but little of their own quality, ease of production, low cost, suitable for carrying small amounts without power after, do not ask for speed and productivity occasions. Manual single girder overhead traveling cranes with manual monorail car as the car is running, hand pull gourd as a lifting mechanism, bridge girder by girder and end components. Girder generally use a single beam, side beam is formed by bending steel or steel plate welded. Electric single girder overhead crane operating speeds, higher productivity than the manual, since the weight as well. Electric single girder overhead crane from the bridge, traveling mechanism, hoist and electrical equipment and other components.

(2) overhead crane:
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. Overhead cranes, gantry cranes, crane, metallurgical bridge cranes, cranes, etc. are examples of such cable. Bridge single girder gantry craneis 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

Refers crane hooks or other devices extract heavy hanging in space lift and transport machinery and other cyclical job. There are many categories crane, "crane", "crane", "crane", "travel" and refers to the single girder gantry craneknown as a class or classes. According to the structure can be divided into bridge cranes, cable cranes and jib cranes three categories, according to extract device can be divided into the crane hook, grab cranes, electromagnetic cranes and other 15 categories, according to the movement can be divided into fixed cranes, climbing double girder overhead cranes, cranes will move radially slewing cranes, traveling cranes five categories, according to the driving mode can be divided into manual cranes, electric cranes, hydraulic cranes categories. Also in accordance with the rotation capability, supporting way, operating methods to classify.

The future situation of the Gantry Crane

Currently,  Gantry Crane machinery is in a market of rapid development, the giant has a large market potential for development. With the increasingly rapid modernization of hoisting machinery requirements are also increasing, to large-scale  Shipbuilding gantry cranemachinery, automation, specialization trend.
Large-scale
Since the new century, large-scale projects to accelerate the trend of domestic super crawler cranes slowly began to appear in front of everybody. 1,000-ton, 2000-ton crawler cranes have been introduced, the prelude to our super crawler crane rapid development. Currently on the market the largest crane sales for 5 ~ 8t products, accounting for over 50% of total sales. Because many manufacturers, intensified price competition, product margins increasingly narrow profit margins and large tonnage products far exceeds the small tonnage products. From the direction of development of the domestic car chassis, the market grew rapidly large tonnage truck, FAW, heavy truck and other manufacturers are speeding up the development of large-tonnage truck chassis, so large tonnage bridge crane products will vary large tonnage market expansion chassis gradually increase over 2011 products 10t less than 30% of total sales, in the first half of this year more than 10t product 33% of total sales in the next few years, large tonnage, serialized bridge crane products will have a larger space for development, the demand was gradually increasing.
With the start of large-scale projects,  Gantry Crane and transport of materials for  Gantry Cranemachinery to provide a broader space for development, market demand is growing, industry prospects.
Automation

The rapid development of hoisting machinery industry has greatly promoted the application of automation products in the industry. Although the overall level of automation applications  Gantry Crane machinery industry is not high, but whether it is  single girder gantry crane machinery or lifting machinery manufacturers users have come to realize the advantages of applications where automation products.
Director of the China Academy of Building Research Technology Center Construction Mechanization Research Branch, said Luo Wenlong, automation products in lifting machinery industry is huge potential, prospects are very broad. Under both the trend towards more mature and modern urban development patterns, or the economic crisis, the country's investment in stimulating infrastructure, Chang said the lifting machinery are booming. From the control to the drive and automation products in the application of the depth of the industry has become cumulative. From the existing scale, future growth and the current growth rate, lifting machinery industry has gradually become automated enterprise market should not be overlooked.
Specialization
With the national electric power, petrochemical, steel, transportation and other infrastructure construction reached its climax, the rapid expansion of domestic crane market, the trend of large crane has become an irreversible fact. In order to reduce production costs, saving manpower and resources, the demand for large cranes has gradually expanded requirements for crane  Gantry Crane capacity is growing. Hoisting speed is higher and higher, it is bound to the energy performance requirements for crane control and increasing. As automated production processes in the important part, simple operation, safe, reliable, easy to maintain a basic requirement for cranes, in addition, the high cost of  Gantry Crane machinery market will be more in the future.
To this end, a variety of work to meet the needs of specialized cranes continue to be developed and put into use, there is nuclear power, paper, waste disposal and other special cranes. The crane also has special properties to meet a variety of work environments, such as corrosion, explosion-proof, insulated cranes. Conventional rail, ship cranes special performance has also been enhanced adaptability to the environment is also rising.
Imagine, as the country's urbanization around soon start and accelerate development, including the construction of many railway transportation, building construction, energy, water conservancy and so on all aspects of the development of China gave the crane industry provides a broader development prospects. The next 3 to 5 years time, Chinese crane market will be more exciting, 100 tons to kiloton product type spectrum will be more intensive, technology will be more mature, people will gradually from the initial breakthrough for Chinese enterprises series of the world's largest surprise in to calm down, deeper into the engineering applications and user needs.
Faced with a good momentum of development of  Gantry Crane machinery industry should focus on machinery, technology, research and proposed  Gantry Crane equipment for sustainable development strategies, although China has now entered the high-end, but for independent innovation, build their brand, promote the strategic development, with leading the development of innovation, and then go do their own ability to achieve long-term development of the industry, to establish awareness of intellectual property rights should be strengthened to cultivate.

Crane industry

FromShipbuilding gantry crane industry growth point of view, China has achieved in the lifting industry increased output and increase exports, improve product yields, companies plan for this policy, domestic economic growth required to support high-end products industry gradually highlight its advantages.
With the rapid development of China's economy, lifting transport in industrial production has also made great progress, China lifting equipment manufacturing enterprises up to more than 3,500, of which 1898 companies have installed, demolition permits, they have more advanced manufacturing capabilities, including five-second period, the gross industrial production and sales of lifting products, an increase of 30% per year, respectively, but the product in general and there are still a wide gap between foreign countries.
In recent years, domestic crane emerge in the international market, mainstream companies leading the industry to upgrade and achieve technological breakthroughs. Recalling the course of growth: from 2000 to 2005, the global crane industry is more than 25 percent compound annual growth of high-speed growth, of which China contributed the largest increment, truck crane sales doubled from 1999, 2003 exceeded 1 million units. Following the annual output of 7,500 mid-century America 70 years after Japan's 8000 production record in 1980, China has become the world's largest crane producer. Meanwhile, mainstream companies achieve two key breakthroughs, one scale production exceeded 1 million units, the second is innovation to adapt to the needs of China's 100-ton crane technology following the capture of all terrains core technology, forming a low-end high school Chinese technical schools, which is particularly critical, it established a ChineseShipbuilding gantry crane unique cost advantage.
2005 to 2010, showing significant changes in the macroeconomic environment: Countries to increase infrastructure investment, energy and other projects led to the large-scale lifting technology innovation, the process of mainstream companies achieve three major breakthroughs: First, an international speed, two cranes product structure and category is further broken down, type spectrum spans from 5 tons to 2,000 tons of coverage, vehicle type, vehicle type, all terrain, crawler, and other off-road tire developed; three are large. China's largest tonnage of 200 tons crane history is broken, the global crane industry completed from 100 tons to kiloton leap.

2010-2013, tighten macroeconomic environment, but the supply capacity has nearly tripled, mainstream business on the one hand to deal with all kinds of competitive pressures, but also to seize the structural changes in the region, to achieve the strategic layout of the second internationalization takeoff, product and technology layout quickly seize large tonnage high point, after once again demonstrated the advantage of Chinese enterprises, one of the world's most being or about to be born, but round to enhance value for our users to use the theme of a new generation of technological revolution is on the rise.

Crane classification

A crane is capable of vertical and horizontal movement of the lifting articles in a certain range of mechanical, intermittent operation and the operating cycle is theWall-traveling Jib Crane work characteristics. The main purpose cranes and structural features can be classified.
Divided by job Uses: Common cranes, construction cranes, metallurgical cranes, railway cranes, port cranes, ship cranes, deck cranes.
By structure type is divided into: bridge type cranes and crane arm shelf type; rotary cranes and non-rotatinggantry crane; stationary cranes and crane operation. Run crane rail line was divided (fixed rail) and non-rail (no fixed track, supported by the tires or tracks run).
In bridge engineering used in lifting machinery, depending on their structure and performance, and can be divided into small light lifting equipment, lifting equipment and bridge type crane jib type three categories. Small light lifting equipment such as: jacks, hoists, winches, etc. Girder bridge type lifting machinery such as cranes, gantry cranes. Jib crane types, such as fixed-slewing cranes, tower cranes, truck cranes, tires, crawler

Double girder overhead crane rules

Double girder overheadSingle girder overhead crane rules
1. Before
a. Brake, hook, wire rope and safety devices and other components required to check the card check and found abnormalities, should be excluded.
b. The operator must be in confirmation catwalk or on unmanned orbit, we can close the main power supply. When locking or sign breaker on the power should be original to the person only after closing the main power to get rid of.
2. Work
a. When lifting weights first class (or the maximum load weight) should be suspended 0.5 m height from the ground after the weight is lowered again, check brake function, after reliable confirmation, then normal homework.
b. Manipulator in homework, the homework should be designated for the following alarm-ringing.
① lifting and landing weights; great start, when the car driving.
② crane driving is not clear line of sight through the period, to a continuous-ringing alarm;
③ traveling crane when the crane near the cross in another.
④ when lifting heavy objects close to the staff.
c. Manipulation should run the same command signal delineated.
d. Passed at work in power, should handle all controllers in the "zero" position, should be checked before re-work thesingle girder overhead crane

operation is normal.
e. Large crane, trolley in normal lessons, the non-open anti parking brake; transform large, the direction of movement of the car when the handle is necessary to "zero" position, so that agencies fully resting after the operation, before being reverse driving.
f. Two crane hook, when the main and auxiliary hook and two hooks when switching to highly similar, the main and auxiliary hook necessary homework alone, two hooks to avoid collision.
g. Two hook crane hook while hanging allowed two two objects; without working brake adjustment lifting mechanism.
h. Not allowed to use extreme position limiter parking is prohibited in the case of adjustment under load lifting mechanism brake.

Gantry Cranes

Horizontal tray provided in two branch legs constitute a bridge crane gantry shape. This crane orbit on the ground, mainly used in outdoor storage yard, shipyards, power plants, ports and railway stations and other places for cargo handling and installation homework. Shipbuilding gantry crane hoisting mechanism, trolley traveling mechanism and bridge construction, bridge crane with basically the same. Because span, crane operating agencies they use are driven way to prevent the crane produce skewed running and increase the resistance, or even accidents. Gantry crane lifting trolley running on the bridge, some lifting trolley is a jib crane. Both sides of the bridge legs are generally rigid legs; when span of more than 30 meters, usually on one side of the rigid leg, while the other side is connected through a flexible leg and bridge the ball joint, the mast becomes statically determinate system , such as to avoid the outer lateral thrust loads caused additional stress, can also be compensated bridge gantry crane vertical temperature deformation by wind area, in order to prevent falling or tipping lines in strong winds, wind measurements and fitted organization and operation of the crane rail clamp interlock. Trays may be free at both ends of the cantilever; may be cantilevered at one end or both ends of the boom, in order to expand the scope of homework. Semi-gantry crane bridge legs at one end and the other end without legs, running directly on the high bench. Gantry cranes are divided into four types.
① ordinary gantry cranes: This crane is the most versatile, can carry a variety of items and bulk materials, from the weight of 100 tons, a span of 4 to 35 meters. With common gantry crane grab a higher level of work.
② Station gantry cranes: mainly used for lifting and Gate, also can be installed homework. Lifting capacity of 80 to 500 tons, the span is small, 8 to 16 m; the lower lifting speed of 1 to 5 m / min. This is certainly not always the crane lifting, but once the work is very heavy use, it should be appropriate to the level of progress of work.
③ shipbuilding gantry cranes: for berth assembled hull, standing with two lifting car: There are two main hook of a run on the track on the bridge flange; another has a primary and a secondary hook hook in running on the bottom flange of the rail bridge to flip and lifting large hull segments. Weight is generally from 100 to 1500 tons; span of 185 meters; lifting speed of 2 to 15 m / min, and 0.1 to 0.5 m / min jog speed.
④ container gantry cranes: for the container terminal. After the trailer carrying the quay container bridge container ship unloaded from the ship to the yard or rear, stacking up by container Wall mounted jib crane or transported direct loading can accelerate or other container bridge crane carrying turnover. Can be stacked three to four layers, wide and 6 rows of container yard, general use tire, it also has a rail type. Container gantry cranes and container straddle match, which spans both sides of the door frame height and are larger. In order to meet the transport needs of ports, the higher the level of this crane work. Lifting speed of 8 to 10 m / min; span container according to the number of rows needed to determine the span, up to about 60 meters corresponding to 20 feet, 30 feet from the weight of 40-foot-long containers were about 20 tons, 25 tons and 30 tons.