CN201071261Y - Bank bridge type permanent magnetism suspension wide and thick plate crane - Google Patents

Abstract

The utility model discloses an off-shored bridge permanent magnet crane for hoisting wide and heavy plate, which comprises a bridge structure, a traveling trolley having driver's cab, a machine room, a hanger, a revolving hanger, a pitch mechanism, a lifting mechanism, a through-type rope winding system and a pulley block, a crane traveling mechanism, and an electric control system and a safety protection device. The traveling trolley is fully driven; the hanger is a permanent magnet hanger and is connected with the revolving hanger through a twist lock; and a rope system and the pulley block and the lifting mechanism adopt the through-type rope winding system. The off-shored bridge crane can be used for loading wide and heavy plate, and the steel plate makes linear movement on the plate to substitute for revolving movement of prior portal crane, thus saving time by about 20% in one work cycle and improving the working efficiency. Compared with prior electromagnetic hangers, the electric-control permanent magnet hanger adopted can save energy, and has safe operation, no maintenance and low operation cost. Specific MC nylon pulley can be used for the off-shored bridge crane or the similar product to reduce abrasion of wire rope and pulley and reduce operation energy consumption.

Description

Shore bridge permanent magnet crane wide and thick plate crane

technical field

The utility model relates to a crane, in particular to a shore bridge type permanent magnet crane with a wide and thick plate.

Background technique

In order to revitalize the national shipbuilding industry, the state has continuously strengthened its policy investment in the shipbuilding industry. China's shipbuilding output has grown by an average of 26% annually in recent years. The annual output has exceeded 10 million deadweight tons, accounting for about 18% of the world's shipbuilding share. At present, China has developed into the third largest shipbuilding country in the world. The fast-growing shipbuilding industry has an increasing demand for wide and thick plates. In order to meet the ever-expanding demand for wide and thick plate raw materials in the shipbuilding industry, national large-scale iron and steel manufacturing enterprises have recently introduced wide and heavy plate production lines. The transportation of wide and thick plates is basically carried by ships, so the wharf lifting equipment used by steel mills for shipping wide and thick plates and shipyards for loading and unloading wide and thick plates is very important.

The main type of crane currently used for loading and unloading steel plates is the portal crane, as shown in Figure 1. The steel plate is loaded and unloaded through the coordinated action of the pitching, slewing and lifting mechanisms of the boom 1. Most of the spreaders used in the portal crane are clamps 3 or electromagnetic spreaders 2. The spreaders using clamp 3 are neither It is safe and has great damage to the steel plate. Using the electromagnetic spreader 2, the electromagnetic spreader is always in charging operation during the whole lifting process, which consumes a lot of power. Once the power of the backup battery runs out due to power failure, it will cause the steel plate to fall from high altitude. , a big security risk.

Portal cranes are suitable for steel plates with small lengths such as steel coils, but for lifting wide and thick plates with an ultra-long length of nearly 25 meters, due to the rotary operation of the boom of the portal crane, the placement direction of the steel plates in the cabin is different from that on the wharf. The direction of placement is opposite, so the hanger for hoisting the steel plate needs to be rotated again to turn the length direction of the steel plate by 90 degrees to adapt to the placement of the cabin and dock surface. The requirements are high and the labor intensity is high.

Contents of the invention

The purpose of the utility model is to provide a shore bridge type permanent magnet crane with wide and thick plates.

The technical scheme that the utility model solves its technical problem adopts is:

Including bridge structure, self-propelled trolley with driver's cab, machine room, spreader, slewing hanger, pitching mechanism, hoisting mechanism, through-type rope winding system and pulley block, cart running mechanism, electrical control system and safety protection device.

1) The above-mentioned self-propelled trolley operates as a full-drive type, and the same two sets of driving mechanisms are arranged on both sides of the trolley frame vertically on the trolley rails, and each set of driving mechanisms is decelerated by a frequency conversion motor through a hard-tooth surface reducer , the output shafts at both ends of the hard-tooth surface reducer drive the two wheel shafts through the universal coupling respectively, so that the self-propelled trolley moves, and the self-propelled trolley uses four horizontal guide wheels arranged inside the two tracks for guidance;

2) The sling is a permanent magnet sling, which is connected with the rotary hanger through a turn lock;

3) The above-mentioned rope system and pulley block, the through-type rope winding system adopted by the hoisting mechanism, the steel wire rope passes through the movable pulley on the slewing hanger and the fixed pulley on the trolley to form 4 sets of pulley block systems with a multiple of 2, and one end of the steel wire rope is fixed on the hoist. The other end of the reel is fixed at the fixed point at the front end of the front beam, and the slewing hanger is hung on the trolley to realize the lifting operation of the slewing hanger. The through-type rope winding system adopts special MC nylon pulleys.

4) In the bridge structure, two large diagonal braces are used to connect the front door frame and the rear door frame into two fixed triangles.

The beneficial effect that the utility model has compared with background technology is:

1. The wide and thick plate is loaded and unloaded by the shore bridge crane. The displacement of the steel plate on the plane is a linear motion, which replaces the rotary motion of the original portal crane. A working cycle saves about 20% of time and improves production efficiency.

2. Compared with the original electromagnetic hoist, the electronically controlled permanent magnet hoist is energy-saving, safe, maintenance-free, and reduces operating costs.

3. The application of MC special nylon pulleys in shore bridge cranes and similar products has important promotional significance to reduce the wear of steel wire ropes and pulleys, reduce operating energy consumption and maintenance costs.

4. The mechanical parts of the wide and thick plate ship loader are standardized, the localization rate is high, and the cost performance of the whole machine is high. It has a broad application prospect for iron and steel enterprises and shipbuilding enterprises that produce wide and thick plates.

Description of drawings

Fig. 1 is the front view of the currently used portal machine.

Fig. 2 is the front view of the bridge-type permanent magnet crane with wide and thick plates.

Fig. 3 is a top view of the bridge-type permanent magnet crane with wide and thick plates.

Fig. 4 is a side view of the bridge-type permanent magnet crane with wide and thick plates.

Figure 5 is the GTR12/450 fixed long beam electronically controlled permanent magnet spreader.

Figure 6 is telescopic beam electric control permanent magnet spreader TM8/350.

Figure 7 is the MTE-SMH-D/450 electronically controlled permanent magnet spreader for the hook beam.

Figure 8 is a top view of the self-propelled trolley.

Fig. 9 is a schematic diagram of the winding of the penetrating hoisting rope system.

Figure 10 is a connection diagram of the twist lock.

In the figure: 1. Jib frame, 2. Electromagnetic spreader, 3. Clamp, 4. Front beam, 5. Front tie rod, 6. Small mast, 7. Front mast, 8. Rear tie rod, 9. Rear girder, 10. Large diagonal brace, 11. Rear mast, 12. Penetrating rope winding system, 13. MC nylon pulley, 14. GTR12/45 electric permanent magnet spreader for fixed long beam, 15. Electric permanent magnet lifter for telescopic beam TM8/350, 16. Hook beam electric control permanent magnet spreader MTE-SMH-D/450, 17. Cart running mechanism, 18. Pitching mechanism, 19. Machine room, 20. Hoisting mechanism, 21. Self-propelled trolley . , horizontal guide wheel, 31, manual operation handle, 32, turn lock, 33, cab, 34, fixed pulley, 35, movable pulley, 36, lifting reel

Detailed ways

As shown in Fig. 2, Fig. 3, Fig. 4, this model of the present utility model adopts machine room 19 top-mounted models. The whole machine includes a bridge structure mainly composed of front mast 7, rear mast 11, front girder 4, rear girder 9, small mast 6, front tie rod 5, rear tie rod 8, large diagonal brace 10, horizontal triangle brace 22, etc., with The self-propelled trolley 21 of the driver's cab 33, the machine room 19, three different specifications of electronically controlled permanent magnet spreaders 14, 15, 16, the slewing hanger 24, the pitching mechanism 18, the lifting mechanism 20, the penetrating rope winding system 12 and the MC Nylon pulley 13, cart running mechanism 17, electrical control system 23 and safety protection device.

As shown in Figure 8, the self-propelled trolley 21 runs as a full-drive type, and the vertical trolley rails are arranged on both sides of the trolley frame 25 by the same two sets of driving mechanisms, and each set of driving mechanisms is driven by a variable frequency motor 26 After the hard-tooth surface reducer 27 decelerates, the output shafts at both ends of the hard-tooth surface reducer 27 drive two wheel shafts 29 respectively through the universal coupling 28, so that the self-propelled trolley 21 moves, and the self-propelled trolley 21 runs using four Horizontal guide wheels 30 are arranged on the inside of the two tracks for guidance;

As shown in Figure 10, the described hanger is a permanent magnet hanger, which is connected with the rotary hanger 24 through a turn lock 32;

As shown in Figure 9, the rope system and the pulley block, the penetrating rope winding system 12 adopted by the hoisting mechanism 20, the steel wire rope passes through the movable pulley 35 on the slewing hanger 24 and the fixed pulley 34 on the trolley 21 to form 4 groups with a ratio of 2 One end of the steel wire rope is fixed to the lifting drum 36, and the other end is fixed to the fixed connection point at the front end of the front beam 7, and the rotary hanger 24 is suspended on the trolley to realize the lifting operation of the rotary hanger 24. The penetrating rope winding system 12 adopts Special MC nylon pulley13. MC nylon is a new type of polyamide engineering plastic, which is the main engineering plastic for manufacturing mechanical parts.

In the bridge structure, since the span of the front door frame 7 and the rear door frame 11 varies greatly, this model uses two large diagonal braces 10 to connect the front door frame 7 and the rear door frame 11 into two fixed triangles, increasing the connection between the front door frame and the rear door frame. rigidity.

The loading operation process is as follows: through the electronically controlled permanent magnet spreader 14 or 15 or 16, the magnetic circuit is switched to hold the wide and thick plate on the wharf surface, and the wide and thick plate is lifted to a safe height. Type trolley 21 runs to the river side, descends into the cabin, and after the wide and thick plate is in place in the cabin, the wide and thick plate is loosened by switching the magnetic circuit of the electronically controlled permanent magnet spreader 14 or 15 or 16, and the electronically controlled permanent magnet spreader is lifted. After reaching the safe height, the self-propelled trolley 21 moves to the position of placing the wide and thick slab on the wharf surface, and the electronically controlled permanent magnet hanger 14 or 15 or 16 descends to the wide and thick slab. Complete a loading cycle. The unloading operation is the reverse process of the loading operation.

The self-propelled trolley 21 is a full-drive type, and the same two sets of driving mechanisms are directly arranged on the trolley frame 25. Each set of driving mechanisms is decelerated by a frequency conversion motor 26 through a hard-tooth surface reducer 27, and the hard-tooth surface reducer The output shaft of 27 drives two wheel axles 29 through universal joint 28, thereby realizes the movement of self-propelled dolly 21. The universal joint 28 can compensate for manufacturing and running deviations due to the large track gauge of the trolley. The running of the trolley adopts four horizontal guide wheels 30 arranged inside the two rails for guidance to prevent the trolley from gnawing on the rails. The distance between the horizontal wheel of the trolley and the track of the trolley is adjustable through the eccentric sleeve. The horizontal wheel device of the trolley is convenient for replacement and maintenance. The trolley running mechanism is also provided with a manual operation handle 31, which is convenient to utilize the handle 31 to move the trolley when an unexpected power failure occurs.

The whole machine adopts three different specifications of electronically controlled permanent magnet lifters 14, 15, 16 to adapt to the lifting of steel plates and slabs of different specifications, the details are as follows:

(1) For a steel plate with a width of 0.9 to 4.9 meters, a length of 16 to 25 meters, and a maximum weight of 45 tons, as shown in Figure 5, use GTR12/450 to fix the long beam electronically controlled permanent magnet hanger 14 .

(2) For a steel plate with a width of 0.9-4.9 meters, a length of 6-16 meters, and a maximum weight of 35 tons, as shown in Figure 6, a TM8/350 telescopic beam electronically controlled permanent magnet hanger 15 is used.

(3) For steel plates or steel plates with a width of 0.9 to 4.9 meters, a length of 6 to 16 meters, and a maximum weight of 45 tons, as shown in Figure 7, use the MTE-SMH-D/450 hook beam electric control permanent magnet crane Tool 16.

The machine adopts a rotary hanger 24 and three kinds of permanent magnet hangers 14, 15, 16, which can be connected through the rotary lock 32 respectively, which can make the steel plate rotate ±110 degrees, so as to adapt to the placement position of the steel plate in the cabin. The rotary hanger 24 100% localization rate, the maximum lifting capacity under the hanger is 65T, the standard design of the turn lock on the slewing hanger, and the unified interface with three kinds of permanent magnet lifting tools 14, 15, 16, easy to load and unload.

The through-type rope winding system 12 adopted by the hoisting mechanism 20, the wire rope passes through the movable pulley 35 on the slewing hanger 24 and the fixed pulley 34 on the trolley to form 4 sets of pulley sets with a multiple of 2, one end of the wire rope is fixed on the lifting drum 36, and the other is One end is fixed on the fixed connection point at the front end of the front beam 7, and the rotary hanger 24 is suspended on the dolly. Realize the 24 lifting operations of the rotary hanger. Therefore, during the operation of the self-propelled trolley 21, the steel wire rope always slides relative to the pulley rope groove. The wear of the wire rope in the pulley rope groove prolongs the service life of the wire rope. The lifting winding system uses a special MC nylon pulley 13. MC nylon is a new type of polyamide engineering plastic, which is the main engineering plastic for manufacturing mechanical parts. The characteristics of MC nylon material: small specific gravity, good wear resistance and self-lubrication, good elasticity and toughness, good noise absorption and shock absorption, high strength and reliable chemical stability, good mechanical cutting performance. The application of special nylon material in the pulley greatly improves the service life of the pulley itself and the wire rope, and also reduces the energy consumption and operating cost of the entire rope winding system.

Claims (2)

1. a bank bridge-type permanent magnetism hangs the Wide and Thick Slab hoisting crane, comprises automatic carriage, machine room, suspender, revolution suspension bracket, luffing mechanism, lifting mechanism, penetration type wiring system and assembly pulley, traveling mechanism of the larger traveller, electric control system and the safety guard of portal structure, band driver's cab; It is characterized in that:

1) described self-propelled dolly (21) operates to full driving pattern, by identical two cover driver train vertical small car orbital arrangement in trolley frame (25) both sides, every cover driver train by a frequency conversion motors (26) after hard flank of tooth retarder (27) slows down, the two ends output shaft of hard flank of tooth retarder (27) drives two axletrees (29) by universal coupling (28) respectively, self-propelled dolly (21) is moved, and self-propelled dolly (21) operation is adopted four horizontal guide sheaves (30) to be arranged in two track inboards and is led;

2) described suspender is a permanent magnet hanger, is connected with revolution suspension bracket (24) by twist lock (32);

3) described rope system and assembly pulley, the penetration type wiring system (12) that lifting mechanism (20) adopts, steel rope is 2 assembly pulley system by the movable pulley (35) on the revolution suspension bracket (24) and 4 groups of multiplying powers of last fixed pulley (34) formation of dolly (21), steel rope one end is fixed in hoisting drum (36), the other end is fixed in the affixed point of preceding crossbeam (7) front end, to turn round suspension bracket (24) is suspended on the dolly, realize revolution suspension bracket (24) lift work, penetration type wiring system (12) adopts extraordinary MC nylon pulley (13).

2. a kind of bank according to claim 1 bridge-type permanent magnetism hangs the Wide and Thick Slab hoisting crane, it is characterized in that: described portal structure, adopt two big diagonal braces (10) that front door frame (7), back door frame (11) are connected into two fixed triangle shapes.

Images