Traveling crane steel rope grab bucket

Abstract

The utility model belongs to the technical field of grab buckets, and particularly discloses a crane steel rope grab bucket which comprises a grab bucket body and a grab bucket opening and closing rope, a top plate is hinged to the grab bucket body, a steel sleeve and a fixed pulley are fixedly connected to the top plate, a movable pulley is hinged to the grab bucket body, and the grab bucket opening and closing rope penetrates through the steel sleeve to be sequentially connected with the fixed pulley and the movable pulley. The balancing frame is composed of two fusiform plates and two connecting rods, each fusiform plate is fixedly connected with the corresponding connecting rod, and a lifting rope is detachably connected to the balancing frame; the grab bucket opening and closing rope is limited through the steel sleeve, deviation of the grab bucket opening and closing rope can be avoided, the grab bucket opening and closing rope can be prevented from disengaging from a groove on the movable pulley, and due to the fact that the fusiform plate is fusiform, the grab bucket opening and closing rope can be automatically adjusted and restored to a stable state under the action of external force. The problem that a steel rope for controlling the grab bucket to be opened and closed is separated from a groove on a limiting pulley or a movable pulley of a top plate when the grab bucket is inclined due to design defects of a balancing device and a limiting pulley of an existing crane steel rope grab bucket is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to grab bucket technical field, concretely relates to a travelling crane steel rope grab bucket. BACKGROUND

[0002] The travelling crane steel rope grab bucket is a kind of grab bucket equipment using steel rope to operate, and is usually composed of support rod, jaw plate, crossbeam and steel rope, etc., the steel rope is the important operating part of grab bucket, and the winding drum on the crane is used to control the retraction and extension of steel rope, so as to realize the opening and closing and lifting action of grab bucket, when grabbing materials, grab bucket is suspended by crane through steel rope to the upper of material pile in the state of opening, and by controlling the retraction and extension of steel rope, grab bucket is dug into materials under the action of gravity and completely closed, and the closed grab bucket is lifted to the required height by crane through steel rope, and then moved to the unloading position to unload, the travelling crane steel rope grab bucket is widely used in port, wharf, warehouse, factory and other places, and is used to grab and transport bulk materials such as coal, ore, gravel and scrap steel, and its flexibility and high efficiency make the travelling crane steel rope grab bucket become indispensable handling equipment in these places.

[0003] The existing travelling crane steel rope grab bucket is mainly composed of top plate, balancing device, pulley assembly, grab bucket and steel rope, the steel rope is connected by penetrating the top plate and pulley assembly to control the opening and closing of grab bucket, and the steel rope is connected with grab bucket by balancing device to control the lifting of grab bucket, in daily operation, due to the design defects of balancing device of grab bucket, grab bucket will tilt when working, which causes the steel rope for controlling the opening and closing of grab bucket to deviate, so that the pulley on the top plate for limiting the steel rope is unevenly stressed, causing the steel rope to be out of groove on the limiting pulley or movable pulley of top plate, which needs to be stopped for maintenance and adjustment of steel rope, prolonging the operation time and affecting production. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a travelling crane steel rope grab bucket to solve the problem that the balancing device and limiting pulley of the existing travelling crane steel rope grab bucket have design defects, causing the steel rope for controlling the opening and closing of grab bucket to be out of groove on the limiting pulley or movable pulley of top plate when grab bucket tilts.

[0005] To achieve the above-mentioned purpose, the basic scheme provided by the utility model is as follows: a travelling crane steel rope grab bucket, comprising grab bucket, connecting rod and grab bucket opening and closing rope, the top plate is hinged on the grab bucket, the steel sleeve and the fixed pulley are fixedly connected on the top plate, the movable pulley is hinged on the grab bucket, the grab bucket opening and closing rope penetrates the steel sleeve and is connected with the fixed pulley and movable pulley in sequence, the two shuttle-shaped plates are hinged on the top plate, the two shuttle-shaped plates are fixedly connected by two connecting rods, and the lifting rope is detachably connected on each connecting rod.

[0006] The utility model discloses a principle and beneficial effect lies in: when using, the grab bucket opening and closing rope of control grab bucket is threaded through the steel sleeve, and the original limiting pulley is changed into grab bucket opening and closing rope, and the grab bucket opening and closing rope is positioned to grab bucket through the steel sleeve, can avoid the deviation of grab bucket opening and closing rope, also can avoid the grab bucket opening and closing rope to take place the off track on the movable pulley, thereby reduce the frequency of shutdown maintenance and adjustment steel rope, because the balance frame is by two shuttle -shaped board and two connecting rod composition, because the shuttle -shaped board is shuttle -shaped, the gravity center is lower, the quality distribution is uniform, when being subjected to external force, can automatically adjust and restore to a stable state, thereby keep balance, reduce the inclination of grab bucket, reduce the uneven force of steel rope, thereby prolong the service life of steel rope.

[0007] Scheme two, this is the preferred basic scheme, the top plate is fixedly connected with the connecting block, the connecting block is rotatably connected with the main shaft, the main shaft is fixedly connected with two shuttle -shaped boards, the connecting rod is fixedly connected with the lifting lug in the middle, and the lifting rope and the lifting lug are detachably connected;The geometric center of the two shuttle -shaped boards is fixedly connected with the main shaft, thereby limiting the distance of the shuttle -shaped board to the top plate, when the grab bucket is operated, when the length of the lifting rope on both sides of the shuttle -shaped board is different, the two shuttle -shaped boards are inclined, because the top plate and the middle of the two shuttle -shaped boards are hinged through the main shaft, the grab bucket is not affected by the shuttle -shaped board, so that the grab bucket can still operate normally, and the maintenance is carried out after operation, which avoids on -the -spot shutdown maintenance, and does not affect the production progress.

[0008] Scheme three, this is the preferred scheme two, a plurality of rope clamps are arranged on the lifting rope, and the lifting rope and the lifting lug are connected through the rope clamps;The steel wire rope clamp has good wear resistance and corrosion resistance, which enables it to be used for a long time in harsh working environment, and will not be damaged or failed due to environmental erosion, and can effectively prevent the steel wire rope from loosening and sliding in work, so as to ensure the safety of work, and the rope clamp can avoid the wear and deformation of the steel wire rope, thereby prolonging the service life of the steel wire rope.

[0009] Scheme four, this is the preferred scheme three, two torsion springs are movably penetrated on the main shaft, each torsion spring is located on the two sides of the two shuttle -shaped boards, and the two ends of each torsion spring are fixedly connected with the connecting block and the shuttle -shaped board respectively;The torsion spring can provide stable and consistent torque output, so that the shuttle -shaped board can keep stable when it is deviated, and the inclination of the grab bucket caused by the deviation of the shuttle -shaped board is avoided, the torsion spring also has excellent fatigue resistance and corrosion resistance, can keep stable performance in long-term use, reduce the frequency of failure and maintenance, thereby reducing the maintenance cost of the device.

[0010] Scheme five, this is the preferred scheme three, the two ends of each shuttle -shaped board are fixedly connected with compression springs, and the compression springs abut against the top plate;The force distribution of the compression spring is uniform when it is compressed, so it is more solid and durable, and can bear heavier load.

[0011] Scheme six, which is preferred to the basic scheme, the steel sleeve is detachably connected with a screw-in extrusion type oil cup; the screw-in extrusion type oil cup can control the extrusion amount of the grease by rotating or pressing, which ensures that the steel rope can be properly lubricated, avoiding both the wear caused by insufficient lubrication and the waste and pollution caused by excessive lubrication. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a perspective view of the embodiment 1 of the utility model;

[0013] Figure 2 is a front view of the embodiment 1 of the utility model;

[0014] Figure 3 is Figure 2 is an enlarged view of the position A in the figure;

[0015] Figure 4 is a perspective view of the embodiment 2 of the utility model;

[0016] Figure 5 is a front view of the embodiment 2 of the utility model;

[0017] Figure 6 is Figure 5 is an enlarged view of the position B in the figure. DETAILED DESCRIPTION

[0018] The utility model will be further explained in detail by specific implementation ways as follows:

[0019] The reference signs in the drawings of the specification include: 1. grab bucket, 2. top plate, 3. lifting rope, 4. steel sleeve, 5. fixed pulley, 6. movable pulley, 701. shuttle-shaped plate, 702. connecting rod, 8. screw-in extrusion type oil cup, 9. lifting lug, 10. torsion spring, 11. rope clamp, 12. compression spring, 13. grab bucket opening and closing rope, 14. connecting block, 15. main shaft.

[0020] Embodiment 1

[0021] As Figures 1 to 3As shown: a traveling crane steel rope grab bucket, including grab bucket 1, connecting rod 702 and grab bucket opening and closing rope 13, the top plate 2 is hinged on the grab bucket 1, the steel sleeve 4 and the fixed pulley 5 are fixedly connected on the top plate 2, the screw-in extrusion oil cup 8 is threadedly connected on the steel sleeve 4, the movable pulley 6 is hinged on the grab bucket 1, the grab bucket opening and closing rope 13 penetrates through the steel sleeve 4 and is connected with the fixed pulley 5 and the movable pulley 6 in turn, the connecting block 14 is fixedly connected on the top plate 2, the main shaft 15 is rotatably connected on the connecting block 14, the two shuttle-shaped plates 701 are fixedly connected on the main shaft 15, the connecting rod 702 is fixedly connected between the two shuttle-shaped plates 701, the lifting ear 9 is fixedly connected in the middle of each connecting rod 702, the rope clamp 11 is arranged on the lifting rope 3, the lifting rope 3 and the lifting ear 9 are connected through the rope clamp 11, the torsion spring 10 is movably penetrated through the main shaft 15, each torsion spring 10 is located on the two sides of the two shuttle-shaped plates 701, and the two ends of each torsion spring 10 are fixedly connected with the connecting block 14 and the shuttle-shaped plate 701 respectively.

[0022] The embodiment of the present embodiment is that during the operation of the traveling crane steel rope grab bucket, the lifting rope 3 suspends the grab bucket 1 above the material pile, the grab bucket 1 is dug into the material under the action of the self weight by controlling the winding and unwinding of the grab bucket opening and closing rope 13, and is completely closed, the closed grab bucket 1 is moved to the unloading position through the lifting rope 3 to unload, if the lengths of the lifting ropes 3 on the two sides of the shuttle-shaped plate 701 are different, the shuttle-shaped plate 701 is inclined, the grab bucket 1 is not affected by the shuttle-shaped plate 701 due to the fact that the top plate 2 and the two shuttle-shaped plates 701 are hinged through the main shaft 15, so that the grab bucket 1 can still operate normally, and the two torsion springs 10 can also provide consistent torque output, so that the grab bucket 1 can remain stable when the shuttle-shaped plate 701 is deviated.

[0023] Embodiment 2

[0024] As Figures 4 to 6 shown, the difference from the embodiment 1 is that the two shuttle-shaped plates 701 are fixedly connected through the two connecting rods 702, the compression spring 12 is fixedly connected at the two ends of each shuttle-shaped plate 701, and the compression spring 12 abuts against the top plate 2.

[0025] The embodiment of the present embodiment is that if the lengths of the lifting ropes 3 on the two sides of the shuttle-shaped plate 701 are different, the compression spring 12 at the low end of the shuttle-shaped plate 701 can reduce the inclination angle of the shuttle-shaped plate 701 when the compression spring 12 is pressed, so that the grab bucket 1 can remain stable when the shuttle-shaped plate 701 is deviated.

[0026] The above only is the embodiment of the present application, and the well-known specific structure and characteristics and other common knowledge in the scheme are not described too much here. It should be pointed out that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A travelling steel rope grab, characterized in that, The utility model relates to a grab bucket (1), connecting rod (702) and grab bucket opening and closing rope (13), the top plate (2) is hinged on the grab bucket (1), the steel sleeve (4) and the fixed pulley (5) are fixedly connected on the top plate (2), the movable pulley (6) is hinged on the grab bucket (1), the grab bucket opening and closing rope (13) passes through the steel sleeve (4) and is connected with the fixed pulley (5) and movable pulley (6) in proper order, the top plate (2) is hinged with two shuttle-shaped plates (701), two shuttle-shaped plates (701) are fixedly connected through two connecting rods (702), and the lifting rope (3) is detachably connected on each connecting rod (702).

2. A travelling rope cable grab according to claim 1, characterised in that The top plate (2) is fixedly connected with the connecting block (14), the main shaft (15) is rotatably connected on the connecting block (14), the two shuttle-shaped plates (701) are fixedly connected on the main shaft (15), the lug (9) is fixedly connected in the middle of the connecting rod (702), and the lifting rope (3) and the lug (9) are detachably connected.

3. A travelling rope cable grab according to claim 2, characterised in that A plurality of rope clamps (11) are arranged on the lifting rope (3), and the lifting rope (3) and the lug (9) are connected through the rope clamps (11).

4. A travelling rope cable grab according to claim 3, characterised in that, Two torsion springs (10) are movably penetrated on the main shaft (15), each torsion spring (10) is located on both sides of the two shuttle-shaped plates (701), and the two ends of each torsion spring (10) are fixedly connected with the connecting block (14) and the shuttle-shaped plate (701) respectively.

5. A travelling rope cable grab according to claim 3, characterised in that The both ends of each shuttle-shaped plate (701) are fixedly connected with the compression spring (12), and the compression spring (12) abuts against the top plate (2).

6. A travelling rope cable grab according to claim 1, characterised in that, The steel sleeve (4) is detachably connected with the screw-in extrusion type oil cup (8).

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