A hook head anti-off device

Abstract

The utility model discloses a kind of hook head anti-drop devices, including lifting hook body, the lifting hook body bottom is fixed with hook head body, extension assembly is installed in the lifting hook body, the extension assembly side is rotatably connected with anti-drop lever body, the hook head body inside is installed with positioning assembly, extension assembly includes mounting clamp, the mounting clamp side is screw-mounted with mounting nut, the other end of the mounting clamp is fixed with extension block, by setting extension assembly, after installing anti-drop lever, the length of anti-drop lever can be adjusted according to the bending radian and the opening size of actual hook head, so that anti-drop lever side close to hook head is attached to hook head, so that it can adapt to hook head of different bending radian and opening size, to improve the installation adaptability of anti-drop lever, limiting device is set simultaneously, so that the anti-drop lever after adjustment can be positioned and fixed, to prevent the shrinkage of anti-drop lever after long time use.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically a hook anti-detachment device. Background Technology

[0002] The hook anti-detachment device is a safety device in crane equipment used to prevent the hook from accidentally detaching. Its core function is to ensure that the wire rope or lifting sling is securely connected to the hook during lifting through a mechanical structure or self-locking mechanism, preventing the load from falling due to vibration, shaking, or operational errors. This device typically consists of anti-detachment levers, semi-circular clamps, positioning steel pipes, bolts, and other components, and its design balances strength, durability, and ease of use.

[0003] Chinese Patent CN219489363U discloses a hook anti-derailment device, including a hook handle, a hook head integrally fixedly installed below the hook handle, a mounting clamp installed on the outside of the hook handle, a mounting bolt installed at the front end of the mounting clamp, and a mounting groove corresponding to the mounting bolt inside the hook handle; an anti-derailment spring piece fixedly installed below the mounting clamp; and a mounting base fixedly installed on the right side of the mounting clamp. A transmission rod is installed inside the mounting base, a connecting shaft is installed inside the transmission rod, an operating ball is fixedly installed above the transmission rod, and a transmission push rod is installed below the transmission rod. This hook anti-derailment device, composed of mounting clamps, mounting bolts, and an anti-derailment spring piece, does not damage the original hook head's overall structure and stability, and avoids a series of safety hazards that may be caused by slippage and falling objects during lifting operations.

[0004] Existing hook anti-disengagement devices cannot adjust the length of the anti-disengagement lever according to the actual bending curvature and opening size of the hook head during use, resulting in a mismatch between the anti-disengagement lever and the hook head, which makes it easy for the hook to disengage.

[0005] Therefore, this utility model provides a hook anti-detachment device to solve the above problems. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a hook anti-detachment device, which solves the problem that the length of the anti-detachment lever cannot be adjusted according to the actual bending arc and opening size of the hook head during use, resulting in a mismatch between the anti-detachment lever and the hook head, thus making it easy for the hook to detach.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a hook anti-detachment device, comprising a hook body, a hook head body fixed at the bottom of the hook body, an extension component installed in the hook body, an anti-detachment lever body rotatably connected to the side of the extension component, and a positioning component installed inside the hook head body;

[0008] The extension assembly includes a mounting clamp with a mounting nut threaded onto its side. An extension block is fixed to the other end of the mounting clamp. A support shaft is fixed to the side of the extension block. An adjusting column is rotatably connected to the support shaft. An adjusting groove is provided inside the adjusting column. An adjusting rod is slidably connected inside the adjusting groove. The adjusting rod is fixed to the top of the anti-detachment lever body.

[0009] Preferably, the adjusting rod has a connecting groove on its side.

[0010] Preferably, the outer side of the adjusting column is provided with several sets of limiting slots, and each of the several sets of limiting slots is slidably connected to a limiting column.

[0011] Preferably, the connecting groove and the limiting groove have the same diameter.

[0012] Preferably, the positioning component includes a sliding groove, a spring telescopic rod is fixed to one side of the sliding groove, and a limit block is fixed to the other end of the spring telescopic rod.

[0013] Preferably, a positioning rod is fixed at the bottom of the anti-detachment lever body, and the positioning rod is slidably connected inside the sliding groove.

[0014] Beneficial effects

[0015] This utility model provides a hook anti-detachment device. Compared with the prior art, it has the following advantages:

[0016] (1) A hook anti-detachment device, by setting an extension component, allows the length of the anti-detachment lever to be adjusted according to the actual bending arc and opening size of the hook after the anti-detachment lever is installed, so that the side of the anti-detachment lever close to the hook fits with the hook, thus adapting to hooks with different bending arcs and opening sizes, thereby improving the installation adaptability of the anti-detachment lever. At the same time, by setting a limiting device, the adjusted anti-detachment lever can be limited and fixed, thereby preventing the anti-detachment lever from shrinking after long-term use.

[0017] (2) A hook anti-detachment device, by setting a positioning component, so that the anti-detachment lever can rotate in the direction of the inner groove of the hook during the adjustment process, thereby preventing the anti-detachment lever from shifting to both sides after long-term use, so as to maintain the position of the anti-detachment lever. Attached Figure Description

[0018] Figure 1 This is a three-dimensional view of the external structure of the hook body of this utility model;

[0019] Figure 2 This is a perspective view of the external structure of the extension component of this utility model;

[0020] Figure 3 This is a perspective cross-sectional view of the side structure of the extension component of this utility model;

[0021] Figure 4 This is an enlarged cross-sectional view of the side structure of the positioning component of this utility model.

[0022] In the diagram: 1. Hook body; 2. Extension assembly; 21. Mounting clamp; 22. Mounting nut; 23. Extension block; 24. Support shaft; 25. Adjusting column; 26. Adjusting groove; 27. Adjusting rod; 28. Limiting column; 29. ​​Connecting groove; 210. Limiting slot; 3. Positioning assembly; 31. Sliding groove; 32. Spring telescopic rod; 33. Limiting block; 34. Positioning rod; 4. Hook head body; 5. Anti-detachment lever body. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1:

[0025] Please see Figure 1-3 A hook anti-detachment device includes a hook body 1, a hook head body 4 fixed at the bottom of the hook body 1, an extension component 2 installed in the hook body 1, an anti-detachment lever body 5 rotatably connected to the side of the extension component 2, and a positioning component 3 installed inside the hook head body 4.

[0026] Extension component 2 includes mounting clamp 21, mounting nut 22 is threaded on the side of mounting clamp 21, extension block 23 is fixed to the other end of mounting clamp 21, support shaft 24 is fixed to the side of extension block 23, adjustment column 25 is rotatably connected to support shaft 24, adjustment groove 26 is opened inside adjustment column 25, adjustment rod 27 is slidably connected inside adjustment groove 26, and adjustment rod 27 is fixed to the top of anti-disengagement lever body 5;

[0027] The adjusting rod 27 has a connecting groove 29 on its side, which is used to limit and fix the adjusting rod 27 after the length is adjusted;

[0028] Several sets of limiting slots 210 are provided on the outside of the adjusting column 25. Each of the several sets of limiting slots 210 is slidably connected to a limiting column 28. The setting of several sets of limiting slots 210 and limiting columns 28 allows the anti-detachment lever body 5 to be adjusted to various lengths through the adjusting rod 27, thereby adapting to different sizes of hook bodies.

[0029] The connecting groove 29 and the limiting groove 210 have the same diameter, so that the diameter of the limiting post 28 matches the diameter of the adjusting post 25 and the adjusting rod 27.

[0030] In this embodiment, the anti-detachment lever body 5 is first installed on the hook body 1 using the mounting clamp 21, and the mounting clamp 21 is then threaded and fixed using the mounting nut 22. The length of the anti-detachment lever body 5 is then adjusted according to the curvature and opening size of the hook head body 4 fixed at the bottom of the actual hook body 1. Next, the limiting post 28 is pulled out from inside the adjusting post 25 and adjusting rod 27. Then, the anti-detachment lever body 5 is manually slid in the adjusting groove 26 via the adjusting rod 27, causing the anti-detachment lever body 5 to be stretched closer to the inner wall of the hook head body 4. When the anti-detachment lever body 5 is adjusted to the appropriate position via the adjusting rod 27, the limiting post 28 is inserted through the connecting groove 29 and the limiting slot 210 inside the adjusting rod 27 and adjusting post 25 to fix the adjusted anti-detachment lever body 5, allowing it to be used for a long time.

[0031] Example 2:

[0032] Please see Figure 1-4 Based on Embodiment 1, this embodiment provides a technical solution positioning component 3 including a sliding groove 31, a spring telescopic rod 32 fixed on one side of the sliding groove 31, and a limit block 33 fixed on the other end of the spring telescopic rod 32. The limit block 33 is used to limit and fix the sliding groove 31.

[0033] The bottom of the anti-detachment lever body 5 is fixed with a positioning rod 34. The positioning rod 34 is slidably connected inside the sliding groove 31. The positioning rod 34 matches the sliding groove 31. The end of the positioning rod 34 near the sliding groove 31 has an arc-shaped slope.

[0034] In this embodiment, firstly, the anti-detachment lever body 5 slides in the sliding groove 31 towards the opening of the hook body 4 via the positioning rod 34, causing the limiting block 33 to retract into the sliding groove 31 via the spring telescopic rod 32, causing the anti-detachment lever body 5 to disengage from the inside of the hook body 4. Then, the hook is sleeved inside the hook body 4. Next, the anti-detachment lever body 5 is rotated to the inside of the hook body 4, causing the positioning rod 34 at the bottom of the anti-detachment lever body 5 to slide in the sliding groove 31. Then, the limiting block 33 rebounds due to the contraction force of the spring telescopic rod 32, thereby limiting and fixing the anti-detachment lever body 5 and the positioning rod 34.

Claims

1. A hook anti-detachment device, characterized in that, Includes a hook body (1), a hook head body (4) fixed at the bottom of the hook body (1), an extension component (2) installed in the hook body (1), an anti-disengagement lever body (5) rotatably connected to the side of the extension component (2), and a positioning component (3) installed inside the hook head body (4). The extension assembly (2) includes a mounting clamp (21), a mounting nut (22) is threaded on the side of the mounting clamp (21), an extension block (23) is fixed at the other end of the mounting clamp (21), a support shaft (24) is fixed on the side of the extension block (23), an adjusting column (25) is rotatably connected on the support shaft (24), an adjusting groove (26) is provided inside the adjusting column (25), an adjusting rod (27) is slidably connected inside the adjusting groove (26), and the adjusting rod (27) is fixed on the top of the anti-detachment lever body (5).

2. The hook anti-detachment device according to claim 1, characterized in that, The adjusting rod (27) has a connecting groove (29) on its side.

3. The hook anti-detachment device according to claim 1, characterized in that, The adjusting column (25) has several sets of limiting slots (210) on its outer side, and each of the several sets of limiting slots (210) is slidably connected to a limiting column (28).

4. The hook anti-detachment device according to claim 2, characterized in that, The connecting groove (29) and the limiting groove (210) have the same diameter.

5. The hook anti-detachment device according to claim 1, characterized in that, The positioning component (3) includes a sliding groove (31), a spring telescopic rod (32) is fixed on one side of the sliding groove (31), and a limit block (33) is fixed on the other end of the spring telescopic rod (32).

6. The hook anti-detachment device according to claim 5, characterized in that, The bottom of the anti-detachment lever body (5) is fixed with a positioning rod (34), which is slidably connected inside the sliding groove (31).

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