Anti-separation lifting hook
By adopting the torsion spring mechanism of the limit block and the clamp in the anti-detachment hook, combined with the design of the elliptical limit ring, the existing hook cannot resist external interference and the risk of disengagement caused by wear, achieving higher safety and service life.
Patent Information
- Application Number
- CN202420965759.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The existing anti-detachment hook cannot effectively resist external interference, and the risk of disengagement caused by wear at the hook connection is posed, which poses a safety hazard.
An anti-disengagement hook is designed, adopting the cross-set of the first limit block and the second limit block. Through the torsion spring mechanism of the first and second lock blocks, the limit columns are in contact with the lifting hook, realizing a one-way anti-disengagement function, and through the design of the elliptical limit ring, the service life is extended and the cargo is protected in the event of a failure.
Effectively resist external interference, ensure that the hook can remain closed when ropes are wound, reduce the risk of disengagement, and extend the service life of the equipment through the high strength of the elliptical limit ring, preventing cargo damage caused by wear.
Smart Images
Figure CN222907312U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of lifting hooks, in particular to an anti-disengagement lifting hook. Background Technique
[0002] The lifting hook is one of the most common lifting tools in lifting machinery, and the classification of lifting hooks is extremely wide. Generally, it includes: shackles, eyebolts, round rings, pear-shaped rings, long eyebolts, combined eyebolts, S-hooks, nose lifting hooks, American lifting hooks, goat's horn lifting hooks, eye-shaped sliding hooks, eyebolt with safety catch, chain shackles, which have the characteristics of being unique, novel, of high quality and safe, and are applicable to factories, mines, oil, chemical industry, shipyards and docks, etc. They are often suspended on the steel wire rope of the hoisting mechanism by means of components such as pulley blocks.
[0003] At present, the anti-disengagement lifting hooks on the market usually consist of the following main parts: the hook body, which is the main component of the lifting hook and is used to bear the weight of the object. It is usually U-shaped or J-shaped and has a certain bending angle to facilitate hanging the object and maintaining stability; the bending part, which is the bending part of the hook body and is usually located above the hook body. It has a certain bending angle to facilitate hanging the object and provides a certain bearing capacity and stability; the eyebolt, and the top of some lifting hooks is designed as an eyebolt to facilitate connection through lifting tools such as slings or chains; the safety pin, which is located above the hook body and is used to prevent the lifted object from accidentally falling off during movement.
[0004] Although most of the current lifting hooks on the market have anti-disengagement structures, the structures of the safety pins are generally divided into two types: manual anti-disengagement and automatic anti-disengagement. The manual anti-disengagement structure has the risk of being forgotten to be opened due to the mistakes of the staff, and the working principle of the automatic anti-disengagement is generally one-way closing. However, this structure cannot be closed in special cases such as external force interference like rope entanglement, and due to wear, the connection part of the lifting hook may break, resulting in danger. Therefore, an anti-disengagement lifting hook that can resist external force interference and prevent danger caused by the breakage of the connection part of the lifting hook is designed. Content of the Utility Model
[0005] Based on this, the purpose of the utility model is to provide an anti-disengagement lifting hook to solve the technical problem that the traditional anti-disengagement lifting hook cannot resist external force interference and may cause danger due to the breakage of the connection part of the lifting hook.
[0006] To achieve the above object, the present utility model provides the following technical solution: An anti-disengagement hook, comprising a first limiting block, wherein a first limiting groove penetrating through both sides of the first limiting block is formed inside the first limiting block, and a limiting post is provided at the bottom end of the first limiting block. A second limiting block is sleeved inside the first limiting groove of the first limiting block, and the second limiting block is arranged crosswise with the first limiting block. A lifting hook is connected to the bottom surface of the second limiting block, and the lifting hook cooperates with the limiting post. Two first clamping blocks are connected to the bottom end of one side of the first limiting block facing the bottom end of the second limiting block. At both ends of the connection between the second limiting block and the lifting hook, second clamping blocks matching the corresponding first clamping blocks are connected, and a torsion spring is connected between the top surface of each second clamping block and the top surface of the corresponding first clamping block.
[0007] By adopting the above technical solution, the first clamping block and the second clamping block push up the first limiting block through the torsion spring, so that the limiting post at the bottom end of the first limiting block contacts the tail end of the lifting hook, realizing the one-way anti-disengagement function of the device.
[0008] The present utility model is further arranged such that a second limiting groove penetrating through both sides of the second limiting block is formed inside the second limiting block, and a third limiting shaft penetrating through the second limiting block and the second limiting groove is fixedly connected inside the first limiting groove.
[0009] By adopting the above technical solution, the first limiting block and the second limiting block rotate along the third limiting shaft. At this time, by adjusting the relative distance between the top end of the first limiting block and the top end of the second limiting block, the on / off of the anti-disengagement function of the device can be realized.
[0010] The present utility model is further arranged such that a first limiting shaft is provided at the top end of the first limiting block, a second limiting shaft is provided at the top end of the second limiting block, an elliptical limiting ring located inside the first limiting groove and the second limiting groove is movably sleeved outside the third limiting shaft, the elliptical limiting ring does not contact the third limiting shaft, both sides of the top surface of the outer wall of the elliptical limiting ring are in contact and cooperation with the corresponding first limiting shaft and second limiting shaft, a traction ring is connected to the middle of the top surface of the outer wall of the elliptical limiting ring, and the strength of the elliptical limiting ring is higher than that of the first limiting shaft and the second limiting shaft.
[0011] By adopting the above technical solution, after the rope that can fix the goods is put on the lifting hook, the crane pulls up the equipment through the steel cable passing through the traction ring. At this time, affected by the gravity of the goods itself, the elliptical limit ring pushes the first limit shaft and the second limit shaft outwards. At this time, the relative distance between the first limit shaft at the top of the first limit block and the second limit shaft at the top of the second limit block increases, and the limit post is in close contact with the tail end of the lifting hook, so that the one-way anti-disengagement of the equipment is completely locked. Since the strength of the elliptical limit ring is higher than that of the first limit shaft and the second limit shaft, the service life of the elliptical limit ring is higher than that of the first limit shaft and the second limit shaft. As the equipment is used and worn, the first limit shaft and the second limit shaft will be damaged before the elliptical limit ring breaks. After the first limit shaft and the second limit shaft break, the unrestricted elliptical limit ring moves upwards until it contacts the third limit shaft, preventing the goods from being damaged due to the wear and tear failure of the equipment.
[0012] In summary, the main beneficial effects of the present utility model are as follows:
[0013] In the present utility model, the first clamping block and the second clamping block push up the first limit block through the torsion spring, so that the limit post at the bottom end of the first limit block contacts the tail end of the lifting hook, realizing the one-way anti-disengagement function of the equipment. After the rope that can fix the goods is put on the lifting hook, the crane pulls up the equipment through the steel cable passing through the traction ring. At this time, affected by the gravity of the goods itself, the elliptical limit ring pushes the first limit shaft and the second limit shaft outwards. At this time, the relative distance between the first limit shaft at the top of the first limit block and the second limit shaft at the top of the second limit block increases, and the limit post is in close contact with the tail end of the lifting hook, so that the one-way anti-disengagement of the equipment is completely locked; since the strength of the elliptical limit ring is higher than that of the first limit shaft and the second limit shaft, the service life of the elliptical limit ring is higher than that of the first limit shaft and the second limit shaft. As the equipment is used and worn, the first limit shaft and the second limit shaft will be damaged before the elliptical limit ring breaks. After the first limit shaft and the second limit shaft break, the unrestricted elliptical limit ring moves upwards until it contacts the third limit shaft, preventing the goods from being damaged due to the wear and tear failure of the equipment. Description of the Drawings
[0014] Figure 1 is the overall structural schematic diagram of the present utility model;
[0015] Figure 2 is the overall front sectional view of the present utility model;
[0016] Figure 3 is the overall front sectional view of the damaged state of the present utility model;
[0017] Figure 4 is of the present utility model Figure 2 The enlarged view of the structure at A in
[0018] In the figure: 1, the first limit block; 2, the second limit block; 3, the limit post; 4, the first limit shaft; 5, the second limit shaft; 6, the third limit shaft; 7, the first limit groove; 8, the second limit groove; 9, the lifting hook; 10, the elliptical limit ring; 11, the traction ring; 12, the first clamping block; 13, the second clamping block; 14, the torsion spring. Specific embodiments
[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention.
[0020] Next, the embodiments of the present invention will be described according to the overall structure of the present invention.
[0021] An anti-disengagement hook, as Figures 1-4 shown, includes a first limit block 1. A first limit groove 7 penetrating both sides of the first limit block 1 is provided inside the first limit block 1. A limit post 3 is provided at the bottom end of the first limit block 1. A second limit block 2 is sleeved inside the first limit groove 7 of the first limit block 1, and the second limit block 2 and the first limit block 1 are cross-arranged. A lifting hook 9 is connected to the bottom surface of the second limit block 2, and the lifting hook 9 and the limit post 3 cooperate with each other. Two first clamping blocks 12 are connected to the bottom end of one side of the first limit block 1 facing the bottom end of the second limit block 2. Both ends of the connection between the second limit block 2 and the lifting hook 9 are connected with second clamping blocks 13 that cooperate with the corresponding first clamping blocks 12. A torsion spring 14 is connected between the top surface of each second clamping block 13 and the top surface of the corresponding first clamping block 12. The first clamping block 12 and the second clamping block 13 lift the first limit block 1 through the torsion spring 14, so that the limit post 3 at the bottom end of the first limit block 1 contacts the tail end of the lifting hook 9, realizing the one-way anti-disengagement function of the device.
[0022] A second limit groove 8 penetrating both sides of the second limit block 2 is provided inside the second limit block 2. A third limit shaft 6 penetrating the second limit block 2 and the second limit groove 8 is fixedly connected inside the first limit groove 7. The first limit block 1 and the second limit block 2 rotate along the third limit shaft 6. At this time, by adjusting the relative distance between the top end of the first limit block 1 and the top end of the second limit block 2, the on / off of the anti-disengagement function of the device can be realized.
[0023] A first limit shaft 4 is provided at the top end of the first limit block 1, a second limit shaft 5 is provided at the top end of the second limit block 2. An elliptical limit ring 10 located inside the first limit groove 7 and inside the second limit groove 8 is movably sleeved outside the third limit shaft 6, as Figure 4As shown, the elliptical limit ring 10 does not contact the third limit shaft 6. The two sides of the top surface of the outer wall of the elliptical limit ring 10 are in contact and cooperation with the corresponding first limit shaft 4 and second limit shaft 5. A traction ring 11 is connected in the middle of the top surface of the outer wall of the elliptical limit ring 10. The strength of the elliptical limit ring 10 is higher than that of the first limit shaft 4 and the second limit shaft 5. After the rope that can fix the goods is put on the lifting hook 9, the crane pulls up the equipment through the steel cable passing through the traction ring 11. At this time, affected by the gravity of the goods itself, the elliptical limit ring 10 pushes the first limit shaft 4 and the second limit shaft 5 outwards. At this time, the relative distance between the first limit shaft 4 at the top of the first limit block 1 and the second limit shaft 5 at the top of the second limit block 2 increases, and the limit post 3 is in close contact with the tail end of the lifting hook 9, so as to completely lock the one-way anti-disengagement of the equipment. Since the strength of the elliptical limit ring 10 is higher than that of the first limit shaft 4 and the second limit shaft 5, the service life of the elliptical limit ring 10 is higher than that of the first limit shaft 4 and the second limit shaft 5. As the equipment is used and worn, the first limit shaft 4 and the second limit shaft 5 will be damaged before the elliptical limit ring 10 breaks. After the first limit shaft 4 and the second limit shaft 5 break, the unrestricted elliptical limit ring 10 moves upwards until it contacts the third limit shaft 6, preventing the goods from being damaged due to the wear and tear failure of the equipment.
[0024] Working principle: The first clamping block 12 and the second clamping block 13 push up the first limit block 1 through the torsion spring 14, so that the limit post 3 at the bottom end of the first limit block 1 contacts the tail end of the lifting hook 9, realizing the one-way anti-disengagement function of the equipment. Press the bottom end of the first limit block 1 to expose a gap, pass the rope for fixing the goods through the gap and put it on the lifting hook 9. The crane pulls up the equipment through the steel cable passing through the traction ring 11. At this time, affected by the gravity of the goods itself, the elliptical limit ring 10 in the first limit groove 7 and the second limit groove 8 pushes the first limit shaft 4 and the second limit shaft 5 outwards. At this time, the relative distance between the first limit shaft 4 at the top of the first limit block 1 and the second limit shaft 5 at the top of the second limit block 2 increases, and the limit post 3 is in close contact with the tail end of the lifting hook 9, so as to completely lock the one-way anti-disengagement of the equipment. Since the strength of the elliptical limit ring 10 is higher than that of the first limit shaft 4 and the second limit shaft 5, the service life of the elliptical limit ring 10 is higher than that of the first limit shaft 4 and the second limit shaft 5. As the equipment is used and worn, the first limit shaft 4 and the second limit shaft 5 will be damaged before the elliptical limit ring 10 breaks. After the first limit shaft 4 and the second limit shaft 5 break, the unrestricted elliptical limit ring 10 moves upwards until it contacts the third limit shaft 6, preventing the goods from being damaged due to the wear and tear failure of the equipment.
[0025] Based on the above structure, in this embodiment, although the embodiments of the present invention have been shown and described, this specific embodiment is only an interpretation of the present invention and not a limitation thereof. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions, and variations that do not make creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.
Claims
1. An anti-detachment hook, comprising a first limit block (1), characterized in that: The first limit block (1) is provided with a first limit groove (7) penetrating through both sides of the first limit block (1), and a limit column (3) is arranged at the bottom end of the first limit block (1); a second limit block (2) is sleeved inside the first limit groove (7) of the first limit block (1), and the second limit block (2) and the first limit block (1) are arranged crosswise; a lifting hook (9) is connected to the bottom surface of the second limit block (2), and the lifting hook (9) and the limit column (3) cooperate with each other; two first clamping blocks (12) are connected to the bottom end of the first limit block (1) on one side facing the bottom end of the second limit block (2); both ends of the connection between the second limit block (2) and the lifting hook (9) are connected with second clamping blocks (13) cooperating with the corresponding first clamping blocks (12), and a torsion spring (14) is connected between the top surface of each second clamping block (13) and the top surface of the corresponding first clamping block (12).
2. The anti-detachment hook according to claim 1, characterized in that: A second limiting groove (8) penetrating both sides of the second limiting block (2) is provided inside the second limiting block (2), and a third limiting shaft (6) penetrating the second limiting block (2) and the second limiting groove (8) is fixedly connected inside the first limiting groove (7).
3. The anti-detachment hook according to claim 2, characterized in that: The first limiting block (1) is provided with a first limiting shaft (4) at the top end, the second limiting block (2) is provided with a second limiting shaft (5) at the top end, and the third limiting shaft (6) is externally sleeved with an elliptical limiting ring (10) located inside the first limiting groove (7) and inside the second limiting groove (8).
4. The anti-detachment hook according to claim 3, characterized in that: The elliptical limiting ring (10) does not contact the third limiting shaft (6), and both sides of the top surface of the outer wall of the elliptical limiting ring (10) are in contact and cooperation with the corresponding first limiting shaft (4) and second limiting shaft (5).
5. The anti-detachment hook according to claim 3, characterized in that: A traction ring (11) is connected in the middle of the top surface of the outer wall of the elliptical limiting ring (10).
6. The anti-detachment hook according to claim 3, characterized in that: The strength of the elliptical limiting ring (10) is higher than that of the first limiting axis (4) and the second limiting axis (5).