An anti-wear buffer device for a crane ship lock hook counterweight

Abstract

A wear-proof buffer device for a counterweight block of a crane lock hook comprises a buffer sleeve, a mounting hole is provided on the buffer sleeve, screws are fixed around the outer side of the corresponding counterweight block, the screws are inserted into the corresponding mounting holes and fixed by a locking assembly. The utility model provides an wear-proof buffer device for a counterweight block of a crane lock hook, which can prevent the counterweight block from damaging the main and auxiliary hook wire ropes during the swinging process, thereby greatly extending the service life of the main and auxiliary hook wire ropes.

Description

Technical Field

[0001] The utility model relates to a buffer device, in particular to an anti-wear buffer device for a counterweight block of a lock hook of a crane ship. Background Art

[0002] At present, floating crane vessels working in offshore deepwater areas are greatly affected by swells, and the lock hooks of crane vessels usually use a single steel wire rope with a counterweight. The counterweight is welded with multiple layers of thick steel plates and weighs about 1-2 tons. Under the action of swells, the counterweight swings with a large amplitude. During the swinging process, the edges of the counterweight are very likely to collide or rub against the main and auxiliary hook wire ropes, causing damage to the main and auxiliary hook wire ropes and greatly shortening their service life. The hard collision between the lock hook and the main and auxiliary hooks and the main and auxiliary hook wire ropes will also damage the lifting lock, posing certain safety hazards. At present, nylon fabric is usually used to alleviate impact and wear. The counterweight is coated, but the wear resistance of nylon fabric is poor and it is easy to be damaged during impact and friction, and the protection effect on the main and auxiliary hook wire ropes is not good. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an anti-wear buffer device for a counterweight block of a crane lock hook, which can prevent the counterweight block from causing damage to the main and auxiliary hook wire ropes during the swinging process, thereby greatly extending the service life of the main and auxiliary hook wire ropes.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A wear-proof buffer device for a crane ship lock hook counterweight block comprises a buffer sleeve, which is provided with mounting holes, and screws are fixed around the outer side of the corresponding counterweight block. The screws are inserted into the corresponding mounting holes and fixed by a locking assembly.

[0006] Guard plates are embedded on the left and right sides of the inner side of the buffer sleeve.

[0007] The buffer sleeve and the guard plate are made of rubber.

[0008] The buffer sleeve is a U-shaped structure and is arranged at the upper and lower ends of the counterweight block.

[0009] The U-shaped buffer sleeve is composed of four buffer blocks.

[0010] Both ends of each buffer block are inclined at 45 degrees.

[0011] The buffer block is provided with a fixing groove along the length direction; the buffer block is provided with a straight groove opening and a screw rod through hole in the transverse direction, the straight groove opening and the screw rod through hole correspond to the screw rod and are connected with the fixing groove.

[0012] The locking assembly comprises a plane washer, a spring washer and a hexagonal slotted nut, and a split pin is inserted into the hexagonal slotted nut.

[0013] Cushion blocks are welded on the left and right sides of the counterweight block, and the cushion blocks are flush with the outermost end surface of the counterweight block on that side.

[0014] The utility model provides an anti-wear buffer device for a counterweight block of a crane lock hook, which has the following technical effects:

[0015] 1) By installing a "U"-shaped anti-wear buffer sleeve on the counterweight, damage to the main and auxiliary hook wire ropes can be avoided, greatly improving the service life of the wire ropes.

[0016] 2) Add protective plates on the left and right sides of the buffer sleeve to provide support for the buffer sleeve when it is hit, so as to avoid the buffer sleeve from breaking due to the depression of the side of the counterweight.

[0017] 3) Mechanical anti-loosening measures such as hexagonal slotted nuts and cotter pins are used to improve the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the structure of the utility model (first perspective).

[0020] Figure 2 It is a schematic diagram of the structure of the utility model (second viewing angle).

[0021] Figure 3 It is a partial structural schematic diagram of the utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the buffer block in the utility model (first perspective).

[0023] Figure 5 This is a schematic diagram of the structure of the buffer block in the utility model (second viewing angle).

[0024] Figure 6 It is a cross-sectional view of the locking assembly in the present invention.

[0025] In the figure: buffer sleeve 1, mounting hole 2, counterweight block 3, screw rod 4, locking assembly 5, guard plate 6, cushion block 7, buffer block 1.1, fixing groove 1.2, straight notch 1.3, screw rod through hole 1.4, flat gasket 5.1, spring gasket 5.2, hexagonal slotted nut 5.3, cotter pin 5.4. DETAILED DESCRIPTION

[0026] like Figure 1-2As shown, an anti-wear buffer device for a crane ship lock hook counterweight block includes a buffer sleeve 1, which is made of rubber and is arranged in the upper and lower positions of a counterweight block 3 in a "U"-shaped structure. The two sides of the "U"-shaped structure are the main positions that bear impact and are the main buffer surfaces.

[0027] In order to solve the problem of fixing the device on the counterweight block 3, screws 4 are welded around the counterweight block 3, and the corresponding buffer sleeve 1 is provided with a mounting hole 2. The screws 4 are inserted into the corresponding mounting hole 2 and fixed by a locking assembly 5.

[0028] The mounting hole 2 here includes a straight slot 1.3 and a screw through hole 1.4, the number and position of which correspond to the screw 4. The straight slot 1.3 and the screw through hole 1.4 are arranged transversely along the buffer sleeve 1 and communicate with the fixing groove 1.2 opened on the buffer sleeve 1 along the length direction.

[0029] The length of the straight slot 1.3 is slightly greater than the length of the split pin 5.4, and the width is slightly greater than the width of the hexagonal slotted nut 5.3, so as to ensure sufficient operating space when fixing.

[0030] The locking assembly 5 here includes a hexagonal slotted nut 5.3, which is threadedly connected to the screw rod 4. Since the rubber material has a certain elasticity, after the nut is screwed in, the hexagonal slotted nut 5.3 is easy to loosen and fall off during the collision of the buffer sleeve 1. In order to prevent the hexagonal slotted nut 5.3 from loosening, a fixed pressure plate (not shown in the figure) is added to the inner bottom surface of the fixed groove 1.2 near the side of the counterweight 3. The fixed pressure plate presses the inner side of the buffer sleeve 1 on the counterweight 3, and then the flat gasket 5.1 and the spring gasket 5.2 are arranged on the fixed pressure plate in sequence, and then the hexagonal slotted nut 5.3 is screwed in to fix the buffer sleeve 1. Finally, a mechanical anti-loosening method is adopted to insert the cotter pin 5.4 to prevent the hexagonal slotted nut 5.3 from falling off.

[0031] In order to solve the problem of the difficulty in fixing due to the inconsistent size of the steel plates on the side of the counterweight block 3, pads 7 are welded on the left and right sides of the counterweight block 3, and the pads 7 are flush with the outermost end surface of the counterweight block 3 on this side. The screw 4 at this place is welded on the pads 7. In this way, the fixing surfaces on the left and right sides of the counterweight block 3 are ensured to be flat.

[0032] In addition, the places on the left and right sides of the counterweight block 3 where the pads 7 are not added are relatively concave, which can easily cause the buffer sleeve 1 to break after being impacted. Therefore, when the buffer sleeves 1 on the left and right sides of the counterweight block 3 are fixed, a protective plate 6 is added on the inner side thereof to increase the impact resistance and ensure the reliability of non-planar installation.

[0033] The U-shaped buffer sleeve 1 is composed of four buffer blocks 1.1. Both ends of each buffer block 1.1 are inclined at 45 degrees. The two ends of the fixed pressure plate in the corresponding fixed groove 1.2 are also beveled at 45 degrees. After docking, the ends of the two buffer blocks 1.1 are combined to surround the fixed pressure plate inside to prevent the fixed pressure plate from scratching the wire rope during collision.

Claims

1. An anti-wear buffer device for a counterweight block of a crane lock hook, characterized in that: The buffer sleeve (1) is provided with a mounting hole (2), and screw rods (4) are fixed around the outer sides of the corresponding counterweight block (3). The screw rods (4) are inserted into the corresponding mounting hole (2) and fixed by a locking assembly (5).

2. The anti-wear buffer device for the counterweight block of the crane ship lock hook according to claim 1, characterized in that: Guard plates (6) are embedded on the left and right sides of the inner side of the buffer sleeve (1).

3. The anti-wear buffer device for the counterweight block of the crane lock hook according to claim 1, characterized in that: The buffer sleeve (1) is made of rubber.

4. The anti-wear buffer device for the counterweight block of the crane lock hook according to claim 3, characterized in that: The buffer sleeve (1) is of a U-shaped structure and is arranged at the upper and lower ends of the counterweight block (3).

5. The anti-wear buffer device for the counterweight block of the crane ship lock hook according to claim 4, characterized in that: The U-shaped buffer sleeve (1) is composed of four buffer blocks (1.1).

6. The anti-wear buffer device for the counterweight block of the crane ship lock hook according to claim 5, characterized in that: Both ends of each buffer block (1.1) are inclined surfaces with an angle of 45°.

7. The anti-wear buffer device for the counterweight block of the crane ship lock hook according to claim 6, characterized in that: The buffer block (1.1) is provided with a fixing groove (1.2) along the length direction; a straight groove (1.3) and a screw hole (1.4) are provided transversely on the buffer block (1.1); the straight groove (1.3) and the screw hole (1.4) correspond to the screw (4) and are connected to the fixing groove (1.2).

8. The anti-wear buffer device for the counterweight block of the crane ship lock hook according to claim 1, characterized in that: The locking assembly (5) comprises a plane washer (5.1), a spring washer (5.2) and a hexagonal slotted nut (5.3), wherein a cotter pin (5.4) is inserted into the hexagonal slotted nut (5.3).

9. The anti-wear buffer device for the counterweight block of the crane lock hook according to claim 1, characterized in that: Cushion blocks (7) are welded on the left and right sides of the counterweight block (3), and the cushion blocks (7) are flush with the outermost end surfaces of the counterweight block (3) on that side.

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