electromagnet overhead crane control system in the crane size vehicle control principle

This article will introduce the electromagnet overhead crane control system in the crane size car control principle:
SCM central processing system, real-time status and position information gathering work of the master switch, the central processor via the control unit for information processing, the use of 485 to achieve information from the control unit to the execution unit of transmission, thus completing the electromagnet overhead crane size car motor control, and then realize shipbuilding gantry crane left and front right information and the car stalls, control, rear and gear information.The size of the vehicle control system panel is shown in two shows:
Mute switch: turn on the switch, turn off the sound travels carts; turn off the switch, turn on the sound travels carts;
Hammer instructions: Tips reached the limit height;
Hammer Reset: height when it reaches the limit, use the hammer reset button in special circumstances can lift limit increase;
Operating lever: front push each car five stalls, each pushing carts around five stalls, to the execution unit can transmit different instructions;
Phase voltage switch: Turn the switch can adjust voltmeter shows AB, AC, BC, the voltage value of any two phases.

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.

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.

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.

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.

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.