Anti-falling lifting hook
By designing the hook head, anti-detachment device, and locking components of the anti-detachment lifting hook, the risk of hook detachment under extreme working conditions is solved, the anti-detachment safety factor and stability are improved, and the adaptability and reliability of the hook are enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RUYUAN DONGYANGGUANG MAGNETIC MATERIAL
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-21
AI Technical Summary
Existing lifting hooks pose a risk of load slippage under extreme loads, vibration interference, or accidental collisions, and their anti-slip performance is insufficient. There is room for improvement, especially in terms of adaptability to multiple scenarios, long-term reliability, and ease of operation.
Design an anti-detachment lifting hook, including a hook head, an anti-detachment device, and a locking assembly. The anti-detachment device is fixed by the locking assembly through a sliding connection and a threaded connection to prevent the lifting chain from detaching from the hook head. The hook's flexibility and adaptability are improved by the lifting plate and connecting column.
It effectively improves the anti-derailment safety factor of the hook, enhances the stability and reliability under complex working conditions, reduces the risk of hook deformation or breakage, and is easy to operate.
Smart Images
Figure CN224147542U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lifting hook technology, and more specifically, to an anti-detachment lifting hook. Background Technology
[0002] As a core load-bearing component of lifting machinery, crane hooks are widely used in many key areas of industrial production and engineering construction. In construction engineering, hooks are used for the installation of high-rise steel structures, the hoisting of prefabricated components, and the handling of heavy equipment; their reliability directly affects construction safety and efficiency. In port logistics, operations such as container loading and unloading and bulk cargo transshipment rely on hooks to quickly grab and transfer heavy objects, placing extremely high demands on their anti-derailment performance. In manufacturing, in scenarios such as large machinery assembly and material handling on production lines, hooks must adapt to dynamic load changes under complex working conditions while ensuring lifting stability. Furthermore, in industries such as energy and power, aerospace, and shipbuilding, lifting operations often involve precision equipment or ultra-large tonnage components, placing stringent requirements on the anti-derailment mechanism and structural strength of hooks.
[0003] With the trend towards larger industrial equipment and more complex operating environments, traditional lifting hooks may pose a risk of accidental load slippage under extreme loads, vibration interference, or unexpected collisions due to structural design limitations. Although existing technologies have proposed various solutions to prevent slippage, there is still room for improvement in terms of adaptability to multiple scenarios, long-term reliability, and ease of operation. Therefore, how to further improve the safety factor against slippage through structural innovation while ensuring the load-bearing capacity of the hook foundation has become a common technical challenge that urgently needs to be overcome in the lifting equipment field. Utility Model Content
[0004] The purpose of this invention is to overcome the low safety factor of existing lifting hooks and to provide an anti-detachment lifting hook that effectively improves the anti-detachment safety factor.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] A lifting hook with anti-derailment function is provided, including a hook head and an anti-derailment device. The hook head includes a head end and a pointed tail end, and also includes a locking component. The anti-derailment device is slidably connected to the head end of the hook head. The locking component is installed on the head end of the hook head and abuts against the anti-derailment device. When one end of the anti-derailment device slides to the pointed tail end of the hook head, the locking component can lock the anti-derailment device.
[0007] In the above-described procedure, the lifting chain is first attached to the hook. After ensuring the chain is correctly installed, the anti-derailment device is slid at the head of the hook, allowing one end to slide from the head to the tip and abut against it. This blocks the opening between the head and tip of the hook. Then, the locking mechanism is used to lock the anti-derailment device onto the hook, ensuring it is completely fixed and immovable. When the anti-derailment device is struck by the chain, the locking mechanism prevents the chain from detaching from the hook, and the device itself remains secure, effectively improving the overall safety factor.
[0008] Furthermore, the anti-detachment device includes anti-detachment plates located on both sides of the hook head. The anti-detachment plates are equipped with slide rails, and the head end of the hook head is equipped with a sliding pin, which is slidably connected to the slide rails. The cooperation between the slide rails on the anti-detachment plates and the sliding pins on the head end of the hook head enables the anti-detachment device to slide with the hook head. A pin hole is provided on the hook head body, and the sliding pin passes through the pin hole for radial fixation, then passes through the slide rails of the anti-detachment plates, thus providing fixation, guidance, and support for the entire anti-detachment device. The anti-detachment plates, slide rails, sliding pins, and locking components of the entire anti-detachment device ensure reliable and secure assembly of the device itself, improving the reliability of the anti-detachment mechanism.
[0009] Furthermore, the anti-detachment plate is an arc shape that fits against the outer surface of the hook head. The reason for setting the anti-detachment plate to be an arc shape that fits against the hook head is that when the anti-detachment device is not in operation, the anti-detachment plate can slide to the back of the arc-shaped body of the hook head, which facilitates the placement of the entire anti-detachment device, reduces space occupation, and prevents the anti-detachment device from colliding with external objects. At the same time, the edge contour of the anti-detachment plate is provided with bent and turned-up ribs. This structure at the edge of the anti-detachment plate is equivalent to a reinforcing rib, which can enhance the rigidity of the entire anti-detachment device.
[0010] Furthermore, the anti-detachment device also includes a baffle, which is located at one end of the anti-detachment plate and fixedly connected to the anti-detachment plates on both sides of the hook head. The pointed end of the hook head is provided with a recess. When one end of the anti-detachment device slides to the pointed end of the hook head, the baffle passes over the recess and abuts against the outer surface of the hook head. The anti-detachment device needs to block the gap between the head end and the pointed end of the hook head. Therefore, the anti-detachment plate cannot be set too short and needs to have a certain length redundancy. The recess can prevent the pointed end of the hook head from abutting and interfering with the baffle too early, and increase the sliding stroke of the entire anti-detachment device, thereby increasing the length of the anti-detachment plate that slides over the pointed end of the hook head and improving the reliability of the anti-detachment.
[0011] Furthermore, the anti-detachment device also includes a protective plate, which is located at the end of the anti-detachment plate away from the baffle. Both ends of the protective plate are fixedly connected to the anti-detachment plate. The protective plate abuts against the hook at the other end of the anti-detachment plate, which serves to limit the entire anti-detachment device. At the same time, the protective plate can also improve the structural strength of the entire anti-detachment device.
[0012] Furthermore, the locking assembly includes a screw and a nut. One end of the screw is provided with an abutment portion, and the head end of the hook is provided with a locking hole. The screw passes through the locking hole. The abutment portion is located on one side of the anti-detachment device and abuts against the anti-detachment plate. The nut is located on the other side of the anti-detachment plate and is threadedly connected to the screw. The locking assembly adopts a threaded connection compression locking method. The friction generated by the preload of the threaded connection between the screw and the nut restricts the sliding of the entire anti-detachment device. At the same time, the screw passes through the locking hole and through the slide rail. The nut and the abutment portion seal both ends of the screw, which plays a role in fixing, guiding and supporting the anti-detachment device, improving the reliability of the anti-detachment mechanism.
[0013] Furthermore, both ends of the screw pass through the slide rail and are slidably connected to the slide rail, and the nut abuts against the surface of the anti-detachment plate; the screw and the sliding pin are both set in the slide rail on the anti-detachment plate. When the threaded connection is made, the abutting part of the nut and the screw can have sufficient contact area with the anti-detachment plate, which improves the stability of the threaded connection pre-tightening.
[0014] Furthermore, a butterfly handle is provided at the end of the abutment part away from the nut. In the actual use of this hook, the threaded connection does not require a large pre-tightening force to stably lock the anti-loosening device. The butterfly handle allows the worker to directly turn the butterfly handle when using it, and clamp the nut at the other end with a small wrench to complete the threaded connection between the screw and the nut, without having to carry too many tools.
[0015] Furthermore, it also includes a lifting platform, which is rotatably connected to the hook. The lifting platform is used to install steel cables or chains on the lifting equipment. The hook can rotate relative to the lifting platform. During lifting, when the load deflects due to external forces (such as inertial swaying, wind disturbance, or uneven ground), the hook can rotate freely around the axis of the cylindrical lifting platform, automatically adjusting the contact angle with the lifting point of the load. This avoids local stress concentration caused by sudden changes in the direction of force, reduces the risk of hook deformation or breakage, and enhances the adaptability of the hook to complex working conditions.
[0016] Furthermore, it also includes a connecting column, one end of which is fixedly connected to the hook head, and the other end is rotatably connected to the hanging platform; the hook head cannot rotate around the central axis of the connecting column, otherwise the iron chain or steel cable hanging on the hook head is prone to rotation and twisting due to inertial swing or wind disturbance, increasing the safety risk.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. The hook includes a hook head, an anti-derailment device, and a locking assembly. The anti-derailment device is slidably connected to the head of the hook head. The locking assembly is installed at the head of the hook head and abuts against the anti-derailment device. When one end of the anti-derailment device slides to the pointed end of the hook head, the locking assembly can lock the anti-derailment device. When the anti-derailment device is hit by the chain, the anti-derailment device can block the chain from detaching from the hook head under the locking action of the locking component, and the anti-derailment device itself will not loosen, effectively improving the overall anti-derailment safety factor.
[0019] 2. The locking assembly includes a screw and a nut. The friction generated by the preload of the threaded connection between the screw and the nut restricts the sliding of the entire anti-slip device, effectively ensuring the locking effect of the anti-slip device. Attached Figure Description
[0020] Figure 1 A three-dimensional diagram of an anti-detachment lifting hook;
[0021] Figure 2 This is a schematic diagram of a device for preventing the removal of a lifting hook that prevents it from slipping off.
[0022] Figure 3 This is a schematic diagram of the structure of an anti-detachment device, locking assembly, and sliding pin combination for an anti-detachment lifting hook.
[0023] In the attached diagram: 100, hook; 110, sliding pin; 120, recess; 130, lock hole; 200, anti-detachment device; 210, anti-detachment plate; 211, slide rail; 220, baffle; 230, guard plate; 300, locking assembly; 310, screw; 311, abutment part; 320, nut; 330, butterfly handle; 400, hanging plate; 500, connecting column. Detailed Implementation
[0024] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0026] Example 1
[0027] This embodiment is a first embodiment of an anti-detachment lifting hook, such as... Figures 1 to 3 As shown, the device includes a hook head 100 and an anti-detachment device 200. The hook head 100 includes a head end and a pointed tail end, and also includes a locking component 300. The anti-detachment device 200 is slidably connected to the head end of the hook head 100. The locking component 300 is installed on the head end of the hook head 100 and abuts against the anti-detachment device 200. When one end of the anti-detachment device 200 slides to the pointed tail end of the hook head 100, the locking component 300 can lock the anti-detachment device 200.
[0028] Specifically, the anti-detachment device 200 includes anti-detachment plates 210 located on both sides of the hook head 100. The anti-detachment plates 210 are provided with slide rails 211, and the head end of the hook head 100 is provided with a sliding pin 110. The sliding pin 110 is slidably connected to the slide rails 211. The cooperation between the slide rails 211 on the anti-detachment plates 210 and the sliding pins 110 on the head end of the hook head 100 realizes the sliding connection between the anti-detachment device 200 and the hook head 100. The hook head is provided with pin holes, and the sliding pins 110 are inserted into the pin holes for radial fixation and then pass through the slide rails 211 of the anti-detachment plates 210, thereby playing a role in fixing, guiding and supporting the entire anti-detachment device 200. The anti-detachment plates 210, slide rails 211, sliding pins 110 and locking components 300 of the entire anti-detachment device 200 can ensure the reliable and firm assembly of the anti-detachment device 200 itself and improve the reliability of anti-detachment.
[0029] Specifically, the anti-detachment plate 210 is an arc shape that fits against the outer surface of the hook head 100. This arc shape is designed to allow the anti-detachment plate 210 to slide onto the back of the arc-shaped body of the hook head 100 when the anti-detachment device 200 is not in operation. This facilitates placement of the entire anti-detachment device 200, reduces space occupation, and prevents collisions between the anti-detachment device 200 and external objects. Furthermore, the edge contour of the anti-detachment plate 210 is provided with bent and flanged ribs. This structure acts as a reinforcing rib at the edge of the anti-detachment plate 210, enhancing the rigidity of the entire anti-detachment device 200.
[0030] Specifically, the anti-detachment device 200 also includes a baffle 220, which is located at one end of the anti-detachment plate 210 and is fixedly connected to the anti-detachment plates 210 on both sides of the hook head 100. The pointed end of the hook head 100 is provided with a recess 120. When one end of the anti-detachment device 200 slides to the pointed end of the hook head 100, the baffle 220 crosses the recess 120 and abuts against the outer surface of the hook head 100. The anti-detachment device 200 needs to block the gap between the head end and the pointed end of the hook head 100. Therefore, the anti-detachment plate 210 cannot be set too short and needs to have a certain length redundancy. The recess 120 can prevent the pointed end of the hook head 100 from abutting and interfering with the baffle 220 too early and increase the sliding stroke of the entire anti-detachment device 200, thereby increasing the length of the anti-detachment plate 210 sliding over the pointed end of the hook head 100 and improving the reliability of the anti-detachment.
[0031] Specifically, the anti-detachment device 200 also includes a protective plate 230, which is located at the end of the anti-detachment plate 210 away from the baffle 220. Both ends of the protective plate 230 are fixedly connected to the anti-detachment plate 210. The other end of the protective plate 230 abuts against the hook head 100, which plays a limiting role for the entire anti-detachment device 200. At the same time, the protective plate 230 can also improve the structural strength of the entire anti-detachment device 200.
[0032] Specifically, the locking assembly 300 includes a screw 310 and a nut 320. One end of the screw 310 is provided with an abutment part 311, and the head end of the hook 100 is provided with a locking hole 130. The screw 310 passes through the locking hole 130. The abutment part 311 is located on one side of the anti-detachment device 200 and abuts against the anti-detachment plate 210. The nut 320 is located on the other side of the anti-detachment plate 210 and is threadedly connected to the screw 310. The locking assembly 300 adopts a threaded connection compression locking method. The friction generated by the preload of the threaded connection between the screw 310 and the nut 320 restricts the sliding of the entire anti-detachment device 200. At the same time, the screw 310 passes through the locking hole 130 and through the slide rail 211. The nut 320 and the abutment part 311 seal both ends of the screw, which plays a role in fixing, guiding and supporting the anti-detachment device 200, improving the reliability of the anti-detachment.
[0033] The working principle of an anti-detachment lifting hook in this embodiment is as follows:
[0034] The hoisting chain is attached to the hook 100. Then, the anti-derailment device 200 is slid at the head of the hook 100. The sliding pin 110 remains stationary, while the slide rail 211 moves relative to the sliding pin 110 under the operator's control. This causes one end of the baffle 220 of the anti-derailment device 200 to slide from the head of the hook 100 to the pointed end of the hook 100, crossing the recess 120 and abutting against the outer surface of the hook 100. The entire anti-derailment device 200 then blocks the opening between the head and pointed end of the hook 100. Then, operate the locking assembly 300 to fix the nut 320 on one side of the anti-detachment plate 210 and rotate the screw 310 on the other side of the anti-detachment plate 210 so that the abutment part 311 of the nut 320 and the screw 310 press against the surfaces of the two anti-detachment plates 210 respectively. Thus, the anti-detachment device 200 is completely fixed on the hook head 100 and cannot move. When the anti-detachment device 200 is hit by the chain, the anti-detachment device 200 can block the chain under the locking action of the locking member to prevent it from falling off the hook head 100.
[0035] The beneficial effects of this embodiment are as follows: by setting the locking component 300 to directly lock the anti-detachment device 200, the anti-detachment device 200 can stably block the chain from detaching from the hook head 100 under the locking action of the screw 310 and the nut 320, effectively improving the overall anti-detachment safety factor.
[0036] Example 2
[0037] This embodiment is a second embodiment of an anti-detachment lifting hook, such as... Figure 2 and 3 As shown, the difference from Embodiment 1 is as follows:
[0038] Specifically, both ends of the screw 310 pass through the slide rail 211 and are slidably connected to the slide rail 211, and the nut 320 abuts against the surface of the anti-detachment plate 210. The screw 310 and the sliding pin 110 are both set in the slide rail 211 on the anti-detachment plate 210. When the threaded connection is made, the abutting part 311 of the nut 320 and the screw 310 can have sufficient contact area with the anti-detachment plate 210, thereby improving the stability of the threaded connection pre-tightening.
[0039] Specifically, the end of the abutment 311 away from the nut 320 is provided with a butterfly handle 330. In the actual use of this hook, the threaded connection does not require a large pre-tightening force to stably lock the anti-loosening device 200. The butterfly handle 330 allows the worker to directly turn the butterfly handle 330 when using it, and clamp the nut 320 with a small wrench at the other end to complete the threaded connection between the screw 310 and the nut 320 without having to carry too many tools.
[0040] The working principle of an anti-detachment lifting hook in this embodiment is as follows:
[0041] The worker uses a wrench to hold the nut 320 in place on one side of the anti-detachment plate 210, while simultaneously turning the butterfly handle 330 on the other side of the anti-detachment plate 210. This causes the screw 310 to be threadedly connected to the nut 320, pressing the anti-detachment plate 210 together and locking the entire anti-detachment device 200 under the preload.
[0042] The beneficial effects of this embodiment are: the locking component 300 adopts a threaded connection of screw and nut 320, which is lightweight and easy to operate.
[0043] Example 3
[0044] This embodiment is a third embodiment of an anti-detachment lifting hook, such as... Figure 2 As shown, the difference from Embodiment 1 is as follows:
[0045] Specifically, it also includes a lifting platform 400, which is rotatably connected to the hook 100. The lifting platform 400 is used to install steel cables or chains on the lifting equipment. The hook 100 can rotate relative to the lifting platform 400. During lifting, when the load deflects due to external forces (such as inertial sway, wind disturbance, or uneven ground), the hook 100 can rotate freely around the axis of the cylindrical lifting platform 400, automatically adjusting the contact angle with the lifting point of the load. This avoids local stress concentration caused by sudden changes in the direction of force, reduces the risk of hook deformation or breakage, and enhances the adaptability of the hook to complex working conditions.
[0046] Specifically, it also includes a connecting column 500, one end of which is fixedly connected to the hook head 100, and the other end is rotatably connected to the hanging platform 400. The hook head 100 cannot rotate around the central axis of the connecting column 500, otherwise the iron chain or steel cable hanging on the hook head 100 may easily rotate and twist due to inertial swing or wind disturbance, increasing the safety risk.
[0047] The working principle of an anti-detachment lifting hook in this embodiment is as follows:
[0048] During lifting and hoisting, the steel cable is installed on the lifting platform 400. At this time, the heavy object will sway slightly under the action of external force. The hook head 100 can rotate relative to the lifting platform 400. In coordination with this rotation, the contact angle between the hook head 100 and the lifting point of the heavy object is automatically adjusted.
[0049] The beneficial effects of this embodiment are: the rotating arrangement of the lifting plate 400 and the hook head 100 improves the flexibility of the hook head 100 and enhances the overall adaptability of the hook to complex working conditions.
[0050] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.
[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A load holding lifting hook comprising a hook head (100) and a load holder (200), the hook head (100) comprising a head end and a pointed tail end, characterized in that, It also includes a locking component (300), wherein the anti-detachment device (200) is slidably connected to the head end of the hook (100), the locking component (300) is installed on the head end of the hook (100), and when one end of the anti-detachment device (200) slides to the pointed end of the hook (100), the locking component (300) can lock the anti-detachment device (200).
2. A non-drop lifting hook according to claim 1, characterized in that The anti-detachment device (200) includes anti-detachment plates (210) located on both sides of the hook head (100), and a slide rail (211) is provided on the anti-detachment plate (210). A sliding pin (110) is provided on the head end of the hook head (100), and the sliding pin (110) is slidably connected to the slide rail (211).
3. A non-drop lifting hook according to claim 2, wherein The anti-detachment plate (210) is an arc shape that fits the outer surface of the hook (100).
4. A non-drop lifting hook according to claim 2, wherein The anti-detachment device (200) also includes a baffle (220), which is located at one end of the anti-detachment plate (210) and is fixedly connected to the anti-detachment plates (210) on both sides of the hook (100). The pointed end of the hook (100) is provided with a recess (120). When one end of the anti-detachment device (200) slides to the pointed end of the hook (100), the baffle (220) crosses the recess (120) and abuts against the outer surface of the hook (100).
5. A non-drop lifting hook according to claim 4, wherein The anti-detachment device (200) also includes a protective plate (230), which is located at the end of the anti-detachment plate (210) away from the baffle (220), and both ends of the protective plate (230) are fixedly connected to the anti-detachment plate (210).
6. A non-drop lifting hook according to claim 2, wherein The locking assembly (300) includes a screw (310) and a nut (320). One end of the screw is provided with an abutment (311), and the head end of the hook (100) is provided with a locking hole (130). The screw (310) passes through the locking hole (130). The abutment (311) is located on one side of the anti-detachment device (200) and abuts against the anti-detachment plate (210). The nut (320) is located on the other side of the anti-detachment plate (210) and is threadedly connected to the screw (310).
7. A non-drop lifting hook according to claim 6, wherein Both ends of the screw (310) pass through the slide rail (211) and are slidably connected to the slide rail (211), and the nut (320) abuts against the surface of the anti-detachment plate (210).
8. A non-drop lifting hook according to claim 7, characterised in that, A butterfly handle (330) is provided at the end of the abutment (311) away from the nut (320).
9. A non-drop lifting hook according to any one of claims 1 to 8, wherein It also includes a lifting plate (400), which is rotatably connected to the hook (100).
10. A non-drop lifting hook according to claim 9, wherein It also includes a connecting column (500), one end of which is fixedly connected to the hook (100), and the other end is rotatably connected to the hanging plate (400).