Anti-dropping lifting hook for crane

Abstract

The utility model discloses an anti-dropping lifting hook for a crane, which belongs to the technical field of anti-dropping lifting hooks for cranes, and adopts the technical scheme that the anti-dropping lifting hook comprises a lifting rope, the bottom of the lifting rope is fixedly connected with a connecting frame, and the inner side of the connecting frame is rotatably connected with a lifting hook assembly; the lifting hook assembly comprises a frame, a first circular groove is formed in the top of the inner wall of the frame, a first connecting block is fixedly connected into the first circular groove, a cylinder is fixedly connected to the bottom of the first connecting block, a second connecting block is fixedly connected to the bottom of the cylinder, and a shielding plate is arranged at the bottom of the cylinder. The top of the shielding plate is provided with a second circular groove matched with the second connecting block for use, and the problems that under the condition that most existing lifting hooks are internally provided with air cylinders, under the condition that the air cylinders are arranged, firstly, the manufacturing cost is high, mass production is inconvenient, and secondly, in the using process, a user needs to maintain the lifting hooks, and the workload is increased can be solved.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-detachment hooks for cranes, and in particular to an anti-detachment hook for cranes. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. As an indispensable part of a crane, the hook is the most common lifting tool in lifting machinery. The hook is often suspended from the wire rope of the lifting mechanism by means of pulley blocks and other components. Hooks are widely used in important industries and infrastructure projects such as ports, power, steel, shipbuilding, petrochemicals, mining, railways, construction, metallurgy and chemicals, automobile manufacturing, plastics machinery, industrial control, highways, heavy transport, pipeline laying, slope and tunnel construction, well management and protection, maritime rescue, marine engineering, airport construction, bridges, aviation, aerospace, stadiums and other important industries.

[0003] The existing method uses a snap-fit ​​connection to fix the connecting plates, and tension springs are set between the connecting plates to accommodate more items. However, tension springs are elastic components with a maximum bearing capacity. When the crane lifts heavy items, the ropes may move during the movement in the air, impacting the connecting plates. If the impact force is greater than the tension spring, the connecting plates may break, thus creating transportation risks and posing safety hazards.

[0004] The existing patent (publication number: CN220866915U) relates to the field of crane technology and discloses an anti-detachment device for a crane hook, including a hook beam, a hook bolt, and a hook body. The hook bolt is located at the top of the hook beam, and the hook body is located at the bottom of the hook beam. The hook beam includes a beam body, a slot, an anti-detachment component, a bottom reinforcement block, a mounting plate, a cylinder, a lifting rod, a pressing block, and a top reinforcement block. The slot is located at the bottom of the beam body, the anti-detachment component is located at the bottom of the beam body, the bottom reinforcement block is fixedly connected to the other end of the bottom of the beam body, the mounting plate is fixedly connected to the top of the bottom reinforcement block, and the cylinder is fixedly connected to the top of the mounting plate. This anti-detachment device for a crane hook uses the cylinder to drive the lifting rod to rise and fall, causing the pressing block to move down to the bottom of the hook body, pressing down and fixing the lifting rope to ensure that the rope does not sway during movement, thereby ensuring its safe use.

[0005] To address the aforementioned issues, existing patents offer solutions. Most existing hooks have internal cylinders. However, this approach has two drawbacks: first, it increases the cost and hinders mass production; second, it requires users to maintain the hooks, increasing their workload.

[0006] Therefore, an anti-detachment hook for cranes is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide an anti-detachment hook for cranes, which can solve the problems of most existing hooks having internal cylinders. First, the cost is high and it is not convenient for mass production. Second, users need to maintain it during use, which increases the workload.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a crane anti-detachment hook, including a lifting rope, a connecting frame fixedly connected to the bottom of the lifting rope, and a hook assembly rotatably connected to the inner side of the connecting frame;

[0009] The hook assembly includes a frame, a first circular groove is formed on the top of the inner wall of the frame, a first connecting block is fixedly connected inside the first circular groove, a cylinder is fixedly connected to the bottom of the first connecting block, a second connecting block is fixedly connected to the bottom of the cylinder, a baffle plate is provided at the bottom of the cylinder, and a second circular groove is formed on the top of the baffle plate to cooperate with the second connecting block.

[0010] Preferably, a limiting groove is provided at the top of the frame, a sliding groove is provided at the bottom of the baffle, an adjustment hole is connected to the front side of the sliding groove, and a limiting block is engaged inside the limiting groove.

[0011] Preferably, the bottom of the limiting block is fixedly connected to an alignment block, and the bottom of the inner wall of the limiting groove is provided with an alignment groove that cooperates with the alignment block.

[0012] Preferably, auxiliary grooves are provided on the left and right sides of the inner walls of the limiting groove and the sliding groove, and auxiliary blocks that cooperate with the auxiliary grooves are fixedly connected to the left and right sides of the limiting block.

[0013] Preferably, an adjusting block is fixedly connected to the front side of the limiting block, and a soft pad is sleeved on the surface of the adjusting block, the soft pad being made of rubber.

[0014] Preferably, the top of the shield is provided with a sliding groove, and the bottom of the inner wall of the frame is fixedly connected with a slider that cooperates with the sliding groove.

[0015] Preferably, the frame is provided with an anti-slip sleeve, and the anti-slip sleeve is made of silicone.

[0016] Preferably, the top and bottom of the inner wall of the frame are provided with splicing grooves, and the top and bottom of the anti-slip sleeve are fixedly connected with splicing blocks that cooperate with the splicing grooves.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application abandons the cylinder design in traditional hooks, which is expensive and requires frequent maintenance, and adopts a simpler and more reliable mechanical structure. For example, the anti-detachment function is achieved through the cooperation of the first connecting block, the cylinder, the second connecting block and the baffle plate, which greatly reduces the production cost and facilitates mass production.

[0019] 2. In this application, the top of the frame is provided with a limiting groove, and the bottom of the baffle is provided with a sliding groove. The front side of the sliding groove is connected to the adjustment hole, and the limiting block is engaged in the limiting groove. This design allows the limiting block to be engaged in the limiting groove through the adjustment hole after the baffle is adjusted to the correct position, thereby limiting the relative displacement between the frame and the baffle, preventing the baffle from rotating accidentally, ensuring the safety of the hoisted items, and preventing items from falling off due to the baffle loosening. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the anti-detachment hook for cranes according to this utility model;

[0021] Figure 2 This is a schematic diagram of the hook assembly of this utility model;

[0022] Figure 3 This is a cross-sectional schematic diagram of the frame and the shielding plate of this utility model;

[0023] Figure 4 This is a schematic diagram showing the disassembled components of this utility model;

[0024] Figure 5 This is a schematic diagram showing the disassembled adjustment block and soft pad of this utility model.

[0025] In the diagram, 1. Lifting rope; 2. Connecting frame; 3. Hook assembly; 301. Frame; 302. First circular groove; 303. First connecting block; 304. Cylinder; 305. Second connecting block; 306. Cover plate; 307. Second circular groove; 4. Limiting groove; 5. Sliding groove; 6. Adjusting hole; 7. Limiting block; 8. Alignment block; 9. Alignment groove; 10. Auxiliary groove; 11. Auxiliary block; 12. Adjusting block; 13. Soft pad; 14. Sliding groove; 15. Sliding block; 16. Anti-slip sleeve; 17. Splicing groove; 18. Splicing block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A crane anti-detachment hook includes a lifting rope 1, a connecting frame 2 fixedly connected to the bottom of the lifting rope 1, and a hook assembly 3 rotatably connected to the inner side of the connecting frame 2;

[0029] The hook assembly 3 includes a frame 301. A first circular groove 302 is provided on the top of the inner wall of the frame 301. A first connecting block 303 is fixedly connected inside the first circular groove 302. A cylinder 304 is fixedly connected to the bottom of the first connecting block 303. A second connecting block 305 is fixedly connected to the bottom of the cylinder 304. A baffle plate 306 is provided at the bottom of the cylinder 304. A second circular groove 307 is provided on the top of the baffle plate 306 to cooperate with the second connecting block 305.

[0030] In this embodiment: By setting up the lifting rope 1, it can be used in conjunction with a crane and a connecting frame 2 to adjust the height of the hook assembly 3. By setting up the connecting frame 2, which is the connecting piece between the lifting rope 1 and the hook assembly 3, the hook assembly 3 can come into contact with other objects. Then, the height of the object can be adjusted by the lifting rope 1, the connecting frame 2, and the crane. By setting up the frame 301, the first circular groove 302, the first connecting block 303, the cylinder 304, the second connecting block 305, the baffle plate 306, and the second circular groove 307, when it is necessary to perform lifting operations on the object. First, the user adjusts the baffle 306. With the baffle 306 adjusted, the first connecting block 303 is fixedly connected to the first circular groove 302 to support the cylinder 304. The second connecting block 305 is rotatably connected to the second circular groove 307, so that the user can manually rotate and adjust the baffle 306 at the bottom of the frame 301. Then, after the item to be hoisted comes into contact with the inner wall of the frame 301, the user manually adjusts the baffle 306 again so that the bottom of the baffle 306 comes into contact with the inner wall of the frame 301, thereby achieving the function of preventing the hoisted item from falling off.

[0031] Specifically, such as Figure 3 As shown, a limiting groove 4 is provided at the top of the frame 301, and a sliding groove 5 is provided at the bottom of the baffle plate 306. An adjustment hole 6 is connected to the front side of the sliding groove 5, and a limiting block 7 is engaged inside the limiting groove 4.

[0032] Specifically, such as Figure 3 As shown, the bottom of the limiting block 7 is fixedly connected to the alignment block 8, and the bottom of the inner wall of the limiting groove 4 is provided with an alignment groove 9 that cooperates with the alignment block 8.

[0033] Specifically, such as Figure 3 As shown, auxiliary grooves 10 are provided on the left and right sides of the inner walls of the limiting groove 4 and the sliding groove 5, and auxiliary blocks 11 that cooperate with the auxiliary grooves 10 are fixedly connected to the left and right sides of the limiting block 7.

[0034] In this embodiment: by setting a limiting groove 4, a sliding groove 5, an adjusting hole 6, and a limiting block 7, after the user has adjusted the baffle 306, the user can adjust the limiting block 7 on the inner wall of the sliding groove 5 through the adjusting hole 6, so that the limiting block 7 contacts the inner wall of the limiting groove 4, thereby limiting the frame 301 and the baffle 306 and reducing positional deviation. By setting an alignment block 8 and an alignment groove 9, the use of the alignment block 8 and the alignment groove 9 reduces the problem of the limiting block 7 being loose on the inner wall of the limiting groove 4. By setting an auxiliary groove 10 and an auxiliary block 11, the auxiliary block 11 contacts the inner wall of the auxiliary groove 10, assisting the adjustment of the limiting block 7 on the inner walls of the limiting groove 4 and the sliding groove 5.

[0035] Specifically, such as Figure 5 As shown, an adjusting block 12 is fixedly connected to the front side of the limiting block 7, and a soft pad 13 is sleeved on the surface of the adjusting block 12. The soft pad 13 is made of rubber.

[0036] Specifically, such as Figure 2 As shown, the top of the baffle plate 306 is provided with a groove 14, and the bottom of the inner wall of the frame 301 is fixedly connected with a slider 15 that cooperates with the groove 14.

[0037] In this embodiment: by setting the adjusting block 12 and the soft pad 13, the user can manually adjust the adjusting block 12 on the inner wall of the adjusting hole 6, so that the adjusting block 12 adjusts the limiting block 7 on the inner wall of the limiting groove 4 and the sliding groove 5. By setting the soft pad 13, the user can easily operate the adjusting block 12. By setting the sliding groove 14 and the slider 15, the slider 15 contacts the inner wall of the sliding groove 14, so that the baffle 306 can be adjusted at the bottom of the frame 301.

[0038] Specifically, such as Figure 4 As shown, the frame 301 has an anti-slip sleeve 16 inside, and the anti-slip sleeve 16 is made of silicone.

[0039] Specifically, such as Figure 4 As shown, splicing grooves 17 are provided at the top and bottom of the inner wall of the frame 301, and splicing blocks 18 that cooperate with the splicing grooves 17 are fixedly connected to the top and bottom of the anti-slip sleeve 16.

[0040] In this embodiment: by setting the anti-slip sleeve 16, the wear caused to the inside of the frame 301 by the hoisted items can be reduced. By setting the splicing groove 17 and the splicing block 18, the splicing block 18 is engaged with the inner wall of the splicing groove 17, so as to facilitate the replacement of the anti-slip sleeve 16 on the inner wall of the frame 301.

[0041] Working principle: First, connect the hoisting rope 1 to the crane. Use the crane to adjust the height of the hoisting rope 1. When preparing for hoisting, manually rotate the baffle plate 306. Since the first connecting block 303 is fixedly connected to the first circular groove 302, it supports the cylinder 304. The second connecting block 305 is rotatably connected to the second circular groove 307, allowing the baffle plate 306 to rotate and adjust flexibly at the bottom of the frame 301. After placing the item to be hoisted in a suitable position on the inner wall of the frame 301, manually rotate the baffle plate 306 again until its bottom contacts the inner wall of the frame 301, thus achieving the function of preventing the hoisted item from falling off. After adjusting the baffle plate 306, the user moves the limiting block 7 in the sliding groove 5 through the adjusting hole 6 until the limiting block 7 contacts the inner wall of the limiting groove 4, thereby limiting the frame 301 and the baffle plate 306 and reducing positional deviation. The positioning block 7 has a bottom alignment block 8 that cooperates with the bottom alignment groove 9 of the inner wall of the positioning groove 4 to effectively prevent the positioning block 7 from loosening in the positioning groove 4. The auxiliary groove 10 of the inner wall of the positioning groove 4 and the sliding groove 5 cooperates with the auxiliary blocks 11 on both sides of the positioning block 7 to help the positioning block 7 adjust smoothly in the groove. In addition, the adjustment block 12 on the front side of the positioning block 7 is convenient for the user to operate. The rubber pad 13 on the surface of the adjustment block 12 increases the operating feel. The sliding groove 14 on the top of the baffle 306 cooperates with the slider 15 on the bottom of the inner wall of the frame 301 to facilitate the smooth adjustment of the baffle 306 at the bottom of the frame 301. The anti-slip sleeve 16 inside the frame 301 can reduce the wear of the hoisted items on the frame 301. The anti-slip sleeve 16 is engaged with the splicing groove 17 on the inner wall of the frame 301 by the splicing blocks 18 at the top and bottom, which is convenient for replacement.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A crane anti-detachment hook, comprising a lifting rope (1), characterized in that: The bottom of the sling (1) is fixedly connected to a connecting frame (2), and the inner side of the connecting frame (2) is rotatably connected to a hook assembly (3); The hook assembly (3) includes a frame (301), the top of the inner wall of the frame (301) is provided with a first circular groove (302), a first connecting block (303) is fixedly connected inside the first circular groove (302), a cylinder (304) is fixedly connected to the bottom of the first connecting block (303), a second connecting block (305) is fixedly connected to the bottom of the cylinder (304), a baffle plate (306) is provided at the bottom of the cylinder (304), and a second circular groove (307) is provided at the top of the baffle plate (306) to cooperate with the second connecting block (305).

2. The anti-detachment hook for a crane according to claim 1, characterized in that: The frame (301) has a limiting groove (4) at the top, and the baffle (306) has a sliding groove (5) at the bottom. The front side of the sliding groove (5) is connected to an adjustment hole (6), and the limiting groove (4) is fitted with a limiting block (7).

3. The anti-detachment hook for a crane according to claim 2, characterized in that: The bottom of the limiting block (7) is fixedly connected to the alignment block (8), and the bottom of the inner wall of the limiting groove (4) is provided with an alignment groove (9) that cooperates with the alignment block (8).

4. The anti-detachment hook for a crane according to claim 2, characterized in that: The left and right sides of the inner walls of the limiting groove (4) and the sliding groove (5) are provided with auxiliary grooves (10), and the left and right sides of the limiting block (7) are fixedly connected with auxiliary blocks (11) that cooperate with the auxiliary grooves (10).

5. A crane anti-detachment hook according to claim 2, characterized in that: An adjusting block (12) is fixedly connected to the front side of the limiting block (7), and a soft pad (13) is sleeved on the surface of the adjusting block (12), and the soft pad (13) is made of rubber.

6. The anti-detachment hook for a crane according to claim 1, characterized in that: The top of the shield (306) is provided with a sliding groove (14), and the bottom of the inner wall of the frame (301) is fixedly connected with a slider (15) that cooperates with the sliding groove (14).

7. The anti-detachment hook for a crane according to claim 1, characterized in that: The frame (301) is provided with an anti-slip sleeve (16) inside, and the anti-slip sleeve (16) is made of silicone.

8. A crane anti-detachment hook according to claim 7, characterized in that: The top and bottom of the inner wall of the frame (301) are provided with splicing grooves (17), and the top and bottom of the anti-slip sleeve (16) are fixedly connected with splicing blocks (18) that cooperate with the splicing grooves (17).

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