Offshore crane lifting hook with limiting device

Abstract

The utility model relates to an offshore crane lifting hook with a limiting device. The offshore crane lifting hook comprises a supporting seat, a detecting device, a buffering device, a collision block, a steel wire rope, a balancing weight, a lantern ring, a lug plate and a lifting hook body. Flanges are arranged at the upper ends of the supporting seats; the upper end of the flange is connected with a crane boom; buffer devices are arranged at the lower ends of the flanges; a detection device is clamped on the buffer device; a collision block is arranged at the lower end of the buffer device; a balancing weight is circumferentially arranged at the lower end of the collision block; two lug plates are arranged at the bottom of the balancing weight in a penetrating manner; a lantern ring is arranged between the upper ends of the two lug plates; a lifting hook is arranged between the lower ends of the two lug plates; and the end part of a steel wire rope on the crane boom sequentially penetrates through the supporting seat, the buffer device, the collision block and the balancing weight and then is connected with the lantern ring. According to the utility model, the operation safety coefficient of workers is increased, the operation difficulty of the workers and the maintenance cost and time cost of the crane are reduced, and a higher-quality hoisting tool is provided for offshore operators.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting operations, in particular to an offshore crane hook with a limiting device. Background Art

[0002] With the continuous development of society, operations in marine environments and high-altitude operations are extremely common. As for the current use of cranes, they are installed on the external platform of the foundation and are used to transport materials from transport ships. The traditional limit device has a complex installation structure, cumbersome installation and low aesthetics, which increases the difficulty of work for offshore workers; traditional cranes are unable to form sealing devices for limit devices and wire ropes, which increases the corrosion rate of components and the risk of loss of limit devices. Utility Model Content

[0003] The utility model mainly solves the technical problems of the prior art such as complex structure and great working difficulty, and proposes an offshore crane hook with a limiting device. Reasonable installation of the limiting device and increase of a confined space are very effective, which increases the operating safety factor of the staff, reduces the operating difficulty of the staff, the maintenance cost and time cost of the crane, and provides better lifting tools for offshore workers.

[0004] The technical scheme adopted by the utility model is: a kind of offshore crane hook with a limit device, which includes a support seat, a detection device, a buffer device, a collision block, a wire rope, a counterweight block, a ring, an ear plate hook, etc. The detection device contains two limiters, and the buffer device has two bending plates of different heights. The hoisted object moves upward with the wire rope, driving the counterweight block and the collision block. When the collision block triggers the buffer device, the upward speed of the object is reduced. When it moves upward to a certain position, the first bending plate in the buffer device will first trigger the limiter in the detection device. When the first triggered limiter fails, the second bending plate is used to start another limit switch in the same way, and finally achieve the limit effect. This double limit device can reduce the operation risk and reduce the difficulty of operation and maintenance of the staff. Except when the hoisting object is working, the support seat is a closed space, which plays a role in the detection device and the buffer device inside; the counterweight block is also made into a closed mechanism, which also plays a certain sealing and anti-corrosion role on the wire rope, the ring, and the rope clamp inside.

[0005] The utility model provides an offshore crane hook with a limit device, comprising: a support seat, a detection device, a buffer device, a collision block, a wire rope, a counterweight block, a collar, a lug plate and a hook;

[0006] A flange is arranged at the upper end of the support seat; the upper end of the flange is connected to the crane boom; a buffer device is arranged at the lower end of the flange; a detection device is arranged on the buffer device;

[0007] A collision block is movably arranged at the lower end of the buffer device; a counterweight block is circumferentially arranged at the lower end of the collision block; two ear plates are passed through the bottom of the counterweight block; a collar is arranged between the upper ends of the two ear plates; and a hook is arranged between the lower ends of the two ear plates;

[0008] The end of the steel wire rope on the crane boom passes through the support seat, the buffer device, the collision block and the counterweight block in sequence, and then is connected with the collar.

[0009] Furthermore, the support seat is in the shape of a hollow cylinder.

[0010] Furthermore, the detection device includes: a detection mounting seat and a limit switch; the detection mounting seat includes a disc base and a vertical plate; limit switches are respectively arranged on both side surfaces of the upper end of the vertical plate.

[0011] Furthermore, the buffer device comprises: a spring support, a spring pressure tube, a spring, a first bending plate and a second bending plate;

[0012] A spring pressure tube is arranged on one side of the upper surface of the spring support; a spring is sleeved on the spring pressure tube; a first bending plate and a second bending plate are symmetrically arranged on the upper surface of the spring support; a rectangular opening is arranged on the spring support; the vertical plate of the detection device is clamped in the rectangular opening; the inner diameter of the rectangular opening is adapted to the thickness of the vertical plate of the detection device.

[0013] Furthermore, the height of the first bending plate is lower than the height of the second bending plate.

[0014] Furthermore, the limit switch can contact the top of the first bending plate or the second bending plate.

[0015] Furthermore, the collision block has a hollow structure, and the outer radii of the upper and lower parts of the collision block are different.

[0016] Furthermore, the support seat, the detection mounting seat and the spring support form a closed space.

[0017] Furthermore, the collision block and the counterweight block form a closed space.

[0018] Compared with the prior art, the utility model provides a kind of offshore crane hook with a limiting device, which includes a support seat, a detection device, a buffer device, a collision block, a wire rope, a counterweight block, a ring, an ear plate hook, etc. The detection device contains two limiters, and the buffer device has two bending plates of different heights. The hoisted object moves upward with the wire rope, driving the counterweight block and the collision block. When the collision block triggers the buffer device, the upward speed of the object is reduced. When it moves upward to a certain position, the higher bending plate in the buffer device will first trigger the limiter in the detection device. When the first triggered limiter fails, the lower bending plate is used to start another limit switch, and finally the limiting effect is achieved. This double limit device can reduce the operation risk and reduce the difficulty of operation and maintenance of the staff. Except when the hoisting object is working, the support seat is a closed space, which plays a role in the detection device and the buffer device inside; the counterweight block is also made into a closed mechanism, which also plays a certain sealing and anti-corrosion role on the wire rope, the ring and the rope clamp inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the composition of the offshore crane hook with a limit device of the utility model;

[0020] Figure 2 This is a schematic diagram of the offshore crane hook detection device with a limit device of the utility model;

[0021] Figure 3 This is a schematic diagram of a buffer device for an offshore crane hook with a limit device according to the utility model;

[0022] Figure numerals: Among them: 1, arm; 2, support seat; 3, detection device; 4, buffer device; 5, impact block; 6, wire rope; 7, counterweight; 8, ring; 9, ear plate; 10, hook; 31, detection mounting seat; 32, limit switch; 41, spring pressure tube; 42, spring; 43, bending plate 1; 44, spring support; 45, bending plate 2. DETAILED DESCRIPTION

[0023] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the sake of ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of the contents.

[0024] like Figure 1-3As shown, the offshore crane hook with a limit device provided by the embodiment of the utility model comprises: a support seat 2, a detection device 3, a buffer device 4, a collision block 5, a wire rope 6, a counterweight block 7, a collar 8, an ear plate 9 and a hook 10;

[0025] The support seat 2 is in the shape of a hollow cylinder. Flanges are respectively arranged at the upper and lower ends of the support seat 2; the upper end of the flange is connected to the crane boom 1; a buffer device 4 is arranged at the lower end of the flange at the upper end of the support seat 2. A collision block 5 is movably arranged under the flange at the lower end of the support seat 2; the collision block 5 does not contact the flange at the lower end of the support seat 2; the collision block 5 is sleeved on the wire rope 6, and the collision block 5 moves up and down together with the wire rope 6 and the counterweight block 7. The collision block has a hollow structure, and the upper and lower parts of the collision block 5 have different outer radii. The outer radius of the upper part of the collision block 5 is smaller than the outer radius of the lower part. A counterweight block 7 is circumferentially arranged at the lower end of the collision block 5; the counterweight block 7 is in the shape of a hollow cylinder, and the inner radius of the counterweight block 7 is the same, but the outer radius is different. Two ear plates 9 are passed through the bottom of the counterweight block 7; a ring 8 is arranged between the upper ends of the two ear plates 9; a hook 10 is arranged between the lower ends of the two ear plates 9;

[0026] The end of the steel wire rope 6 on the crane boom 1 passes through the support seat 2, the buffer device 4, the impact block (5) and the counterweight block 7 in sequence, and then is connected to the ring 8.

[0027] The detection device 3 is mounted on the buffer device 4; the detection device 3 comprises: a detection mounting seat 31 and a limit switch 32; the detection mounting seat 31 comprises a disc base and a vertical plate; limit switches 32 are respectively arranged on both sides of the upper end of the vertical plate; the detection device contains two limit switches, which can play a dual protection role.

[0028] The buffer device 4 includes: a spring support 44, a spring pressure tube 41, a spring 42, a first bending plate 43 and a second bending plate 45; a spring pressure tube 41 is arranged on one side of the upper surface of the spring support 44; a spring 42 is sleeved on the spring pressure tube 41; a first bending plate 43 and a second bending plate 45 are symmetrically arranged on the upper surface of the spring support 44; a rectangular opening is arranged on the spring support 44; the vertical plate of the detection device 3 is clamped in the rectangular opening; the inner diameter of the rectangular opening is adapted to the thickness of the vertical plate of the detection device 3. The height of the first bending plate 43 is lower than the height of the second bending plate 45. The limit switch 32 can contact the top of the first bending plate 43 or the second bending plate 45. The buffer device can effectively reduce the rising speed of the object and reduce the damage to the limiter.

[0029] There are two first bending plates and second bending plates of different heights in the buffer device. The hoisted object moves upward along with the wire rope, driving the counterweight block and the impact block. When the impact block triggers the buffer device, the upward speed of the object is reduced. When it moves upward to a certain position, the higher second bending plate in the buffer device will first trigger the limit switch in the detection device. When the first triggered limit switch fails, it continues to move upward. At this time, the lower first bending plate activates another limit switch, which plays a double protection role and finally achieves the limit effect. Except when the hoisting object is working, the support seat, the spring support seat, and the detection mounting seat form a closed structure, and the counterweight block, the ear plate, and the impact block form a closed structure, which can isolate and prevent corrosion of objects such as the wire rope. The support seat contains the detection device and the buffer device, and the counterweight block contains the wire rope, the ring, and the rope clamp.

[0030] The support seat 2 and the spring support 44 form a closed space. The impact block 5 and the counterweight block 7 form a closed space to protect the internal objects and prevent corrosion.

[0031] The working process of the utility model is as follows: the steel wire rope 6 extends from the crane arm and is fixed to one end of the lifting ear through the spring pressure tube 41, the spring support 44, the impact block 5, and the counterweight block 7 in sequence. When the steel wire rope 6 moves downward, the impact block 5, the counterweight block 7, the ring 8, the ear plate 9, and the hook 10 move downward with the steel wire rope. When the steel wire rope 6 moves upward, it will carry the impact block 5, the counterweight block 7, the ring 8, the ear plate 9, the hook 10 and the suspended object upward. When the impact block just touches the spring support 44, the buffer device 4 starts to work to slow down the rising speed. The first bending plate 43 and the second bending plate 45 of different heights are installed on the spring support 44. The high second bending plate 45 triggers the limit switch first. When the limit switch triggered first fails, the other limit switch is enabled in the same way. The two first bending plates and the second bending plates of different heights realize double limit protection. The support seat 2 and the counterweight block 7 can form a closed structure, which can isolate and prevent corrosion of objects such as wire ropes, especially in offshore operating environments.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that modifying the technical solutions recorded in the aforementioned embodiments, or replacing part or all of the technical features therein by equivalents, does not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An offshore crane hook with a limiting device, characterized in that: include: A support seat (2), a detection device (3), a buffer device (4), a collision block (5), a steel wire rope (6), a counterweight (7), a collar (8), an ear plate (9) and a hook (10); A flange is provided at the upper end of the support seat (2); the upper end of the flange is connected to the crane boom (1); a buffer device (4) is provided at the lower end of the flange; and a detection device (3) is clamped on the buffer device (4); A collision block (5) is movably arranged at the lower end of the buffer device (4); a counterweight block (7) is circumferentially arranged at the lower end of the collision block (5); two ear plates (9) are passed through the bottom of the counterweight block (7); a collar (8) is arranged between the upper ends of the two ear plates (9); and a hook (10) is arranged between the lower ends of the two ear plates (9); The end of the steel wire rope (6) on the crane boom (1) passes through the support seat (2), the buffer device (4), the collision block (5) and the counterweight block (7) in sequence, and is then connected to the collar (8).

2. The offshore crane hook with a limiting device according to claim 1, characterized in that: The support seat (2) is in the shape of a hollow cylinder.

3. The offshore crane hook with a limiting device according to claim 1, characterized in that: The detection device (3) comprises: a detection mounting seat (31) and a limit switch (32); the detection mounting seat (31) comprises a disc base and a vertical plate; the limit switches (32) are respectively arranged on two side surfaces of the upper end of the vertical plate.

4. The offshore crane hook with a limiting device according to claim 3, characterized in that: The buffer device (4) comprises: a spring support (44), a spring pressure tube (41), a spring (42), a first bending plate (43) and a second bending plate (45); The spring support (44) is arranged at the bottom of the support seat (2); a spring pressure tube (41) is arranged on one side of the upper surface of the spring support (44); a spring (42) is sleeved on the spring pressure tube (41); a first bending plate (43) and a second bending plate (45) are symmetrically arranged on the upper surface of the spring support (44); a rectangular opening is arranged on the spring support (44); the vertical plate of the detection device (3) is clamped in the rectangular opening; the inner diameter of the rectangular opening is adapted to the thickness of the vertical plate of the detection device (3).

5. The offshore crane hook with a limiting device according to claim 4, characterized in that: The height of the first bending plate (43) is lower than the height of the second bending plate (45).

6. The offshore crane hook with a limiting device according to claim 4, characterized in that: The limit switch (32) can contact the top of the first bending plate (43) or the top of the second bending plate (45).

7. The offshore crane hook with a limiting device according to claim 1, characterized in that: The collision block (5) is a hollow structure, and the outer radii of the upper and lower parts of the collision block (5) are different.

8. The offshore crane hook with a limiting device according to claim 7, characterized in that: The support seat (2), the detection mounting seat (31) and the spring support seat (44) form a closed space.

9. The offshore crane hook with a limiting device according to claim 7, characterized in that: The collision block (5) and the counterweight block (7) form a closed space.

Images