Self-locking type anti-unhooking hoisting device
The self-locking anti-disengagement lifting device, employing a self-locking mechanism and a triggering mechanism, solves the disengagement problem of traditional lifting devices, achieving improvements in safety and functionality, providing real-time weight measurement and stability, and adapting to different lifting needs.
Patent Information
- Application Number
- CN202520285183.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Traditional lifting devices are prone to detachment during lifting, lack weight measurement functions, and lack effective solutions to deal with swaying and rotation of the lifted object, affecting the stability and safety of the lifting process.
A self-locking anti-disengagement lifting device was designed, which adopts a self-locking mechanism and a triggering mechanism. It uses the wedge structure of the locking tongue and locking groove to achieve automatic locking. It is equipped with a weighing device and a limit device, combined with a buffer device to improve stability and accuracy, and adjusts the flexibility through a detachable counterweight.
It significantly improves the safety and functionality of the lifting device, prevents unhooking accidents, provides real-time weight measurement, enhances the stability and accuracy of the lifting process, and improves the convenience and adaptability of operation.
Smart Images
Figure CN223836926U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of safety device technology, specifically, it relates to a self-locking anti-detachment hoisting device. Background Technology
[0002] Lifting equipment plays an indispensable role in many fields such as modern industrial production and logistics transportation. Lifting equipment is a type of machinery capable of raising, lowering, and moving heavy objects to designated locations. It is widely used in construction, port loading and unloading, and factory production. It greatly improves production efficiency, reduces labor costs, and makes the handling of large-scale, heavy goods possible.
[0003] However, traditional lifting devices have many drawbacks in practical use. Among them, the problem of hook detachment has always been a major safety hazard plaguing the industry. Traditional hooks are mostly simple in structure, relying solely on the hook's opening to hook the load. During lifting, due to various factors such as swaying, bumps, and improper operation, the load can easily detach from the hook. Once a detachment accident occurs, it not only leads to damage to the goods and huge economic losses, but more seriously, it can pose a serious threat to the lives of personnel on site, causing a major safety accident. Furthermore, traditional lifting devices also have functional shortcomings. For example, they cannot accurately measure the weight of the load in real time. This is insufficient data support for some work scenarios with strict weight requirements, potentially leading to overloading and safety accidents, or inaccurate weight judgment affecting subsequent production processes. Moreover, traditional hooks lack effective solutions for dealing with swaying and rotation of the load, which not only affects the stability and accuracy of lifting but also further increases the risk of detachment. Utility Model Content
[0004] In view of this, the present invention provides a self-locking anti-disengagement hoisting device, which solves the drawback of traditional hoisting devices being prone to disengagement accidents and enhances the reliability of locking.
[0005] This utility model is implemented as follows:
[0006] This utility model provides a self-locking anti-detachment lifting device, comprising a hook body, a self-locking mechanism, and a triggering mechanism. The hook body includes a hook body and an opening for attaching the object to be lifted. The self-locking mechanism is located inside the opening and includes a locking tongue and a locking groove. The locking tongue is movably mounted on the hook body, and the locking groove is located inside the opening. The triggering mechanism is located below the hook body and includes a connecting rod and a counterweight. One end of the connecting rod is connected to the locking tongue, and the other end is connected to the counterweight. The hook body is provided with a limiting device to prevent the object from swaying.
[0007] The hook body has a curved "J" or "C" shape structure. The curvature of the curved part is optimized to ensure that the center of gravity of the lifted object is located on the center line of the hook body, avoiding uneven loading. The top of the hook body (the part that connects to the lifting equipment) is designed with a ring or eye-shaped structure for easy connection with lifting ropes or chains.
[0008] The opening is flared or trapezoidal in shape, wider at the entrance and gradually narrowing inwards, facilitating the hooking and positioning of suspended objects. A locking groove is located on the inner side of the opening, its shape matching the locking tongue to ensure a secure lock.
[0009] Based on the above technical solution, the self-locking anti-disengagement hoisting device of this utility model can be further improved as follows:
[0010] When the hook body is not under load, the counterweight moves the connecting rod downward under the action of gravity, causing the locking tongue to disengage from the locking groove, and the opening is in an open state; when the hook body is under load, the counterweight moves the connecting rod upward under the action of the weight of the hoisted object, causing the locking tongue to insert into the locking groove, and the opening is in a locked state.
[0011] Furthermore, the latch is a wedge-shaped structure, and the lock groove is a wedge-shaped groove that matches the latch.
[0012] Furthermore, the locking tongue and the connecting rod are connected by a pin.
[0013] Furthermore, the limiting device includes a limiting plate, a limiting rod, and an adjusting bolt. The limiting plate is disposed outside the opening of the hook body, the limiting rod is vertically fixed on the hook body, and the adjusting bolt is disposed on the limiting rod for adjusting the distance between the limiting plate and the hook body.
[0014] Furthermore, the limiting plate is a flat plate structure, and the limiting rod is a multi-rod structure.
[0015] Furthermore, one end of the limiting rod is fixed to the hook body by welding, and the other end is connected to the limiting plate.
[0016] Furthermore, the triggering mechanism is equipped with a buffer device for cushioning impact forces.
[0017] Furthermore, the buffer device includes a buffer spring and a buffer pad. The buffer spring is sleeved on the connecting rod, with one end fixed to the connecting rod and the other end connected to the counterweight. The buffer pad is fixed to the contact surface of the lock tongue and plays a buffering role when it contacts the lock groove.
[0018] Furthermore, the hook body, self-locking mechanism, and triggering mechanism are all made of high-strength alloy steel.
[0019] The following materials can be selected: 40Cr alloy steel, 35CrMo alloy steel, 42CrMo alloy steel, and 20MnTiB alloy steel.
[0020] Compared with the prior art, the beneficial effects of the self-locking anti-disengagement hoisting device provided by this utility model are:
[0021] Significantly improved safety: The self-locking function of this device fundamentally solves the problem of traditional hooks easily detaching. During lifting, as long as the hook bears weight, the self-locking mechanism will automatically lock, effectively preventing the load from slipping off, greatly reducing the probability of accidents, and ensuring the safety of personnel and the integrity of goods. Safety devices and anti-slip textures further enhance the reliability of the locking mechanism, providing comprehensive safety assurance for lifting operations.
[0022] Enhanced functionality: By installing weighing devices and displays, operators can accurately monitor the weight of the load in real time, which is crucial for rationally planning lifting operations and avoiding overloading. Simultaneously, the application of limit devices, anti-rotation devices, and buffer devices improves the stability and accuracy of the lifting process, reducing damage to the load and equipment caused by swaying, rotation, and impact.
[0023] Enhanced convenience and adaptability: The design of the detachable counterweight and adjustment device allows users to flexibly adjust the device's performance according to different lifting needs, improving its adaptability. The connecting ring facilitates connection with other lifting equipment, enabling collaborative operations and improving work efficiency. The application of a wireless communication module enables remote control, allowing operators to work from away from hazardous areas, improving both safety and ease of operation. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is an example diagram of a self-locking anti-disengagement lifting device;
[0026] Figure 2 for Figure 1 Perspective view of part A in the middle;
[0027] The attached diagram lists the components represented by each number as follows:
[0028] 10. Hook body; 11. Hook body; 12. Opening; 20. Self-locking mechanism; 21. Locking tongue; 22. Locking groove; 30. Triggering mechanism; 31. Connecting rod; 40. Limiting device; 41. Limiting plate; 42. Limiting rod. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0030] like Figure 1 , Figure 2 The image shows a first embodiment of a self-locking anti-detachment lifting device provided by this utility model. In this embodiment, it includes a hook body 10, a self-locking mechanism 20, and a triggering mechanism 30. The hook body 10 includes a hook body 11 and an opening 12, which is used to hook the object being lifted. The self-locking mechanism 20 is located inside the opening 12 and includes a locking tongue 21 and a locking groove 22. The locking tongue 21 is movably mounted on the hook body 11, and the locking groove 22 is located inside the opening 12. The triggering mechanism 30 is located below the hook body 10 and includes a connecting rod 31 and a counterweight. One end of the connecting rod 31 is connected to the locking tongue 21, and the other end is connected to the counterweight. The hook body 10 is provided with a limiting device 40 to prevent the object being lifted from swaying.
[0031] In the above technical solution, when the hook body 10 is not bearing weight, the counterweight moves the connecting rod 31 downward under the action of gravity, causing the locking tongue 21 to disengage from the locking groove 22, and the opening 12 is in an open state; when the hook body 10 bears weight, the counterweight moves the connecting rod 31 upward under the action of the weight of the hoisted object, causing the locking tongue 21 to insert into the locking groove 22, and the opening 12 is in a locked state.
[0032] Furthermore, in the above technical solution, the locking tongue 21 is a wedge-shaped structure, and the locking groove 22 is a wedge-shaped groove that matches the locking tongue 21.
[0033] Furthermore, in the above technical solution, the locking tongue 21 and the connecting rod 31 are connected by a pin.
[0034] One end of the connecting rod is connected to the locking tongue via a pin. The locking tongue is located inside the hook body, near the opening. The other end of the connecting rod extends into the interior of the hook body, specifically at the bottom. The overall direction of the connecting rod is from the inside of the hook body (near the opening) downwards to the bottom of the hook body.
[0035] The counterweight drives the connecting rod to move under the action of gravity. When the hook body bears the weight, the counterweight drives the connecting rod to move upward, driving the locking tongue to insert into the locking groove.
[0036] Furthermore, in the above technical solution, the limiting device 40 includes a limiting plate 41, a limiting rod 42, and an adjusting bolt. The limiting plate 41 is disposed outside the opening 12 of the hook body 10, the limiting rod 42 is vertically fixed on the hook body 11, and the adjusting bolt is disposed on the limiting rod 42 for adjusting the distance between the limiting plate 41 and the hook body 10.
[0037] Furthermore, in the above technical solution, the limiting plate 41 is a flat plate structure, and the limiting rod 42 is a multi-rod structure.
[0038] Furthermore, in the above technical solution, one end of the limiting rod 42 is fixed to the hook body 11 by welding, and the other end is connected to the limiting plate 41.
[0039] Viewed horizontally, one end of the limiting rod is vertically welded to the side of the hook body near the opening, precisely positioned near the beginning of the opening, making the limiting rod parallel to the long side of the opening. The length of the limiting rod is designed according to the specifications of the hook body and the dimensions of common objects to be lifted, ensuring that it effectively extends above the opening without obstructing normal lifting operations.
[0040] Vertically, the limiting plate is located directly above the opening of the hook body, parallel to the plane of the opening. One end of the limiting plate is connected to the end of the limiting rod furthest from the hook body by welding or bolting, forming a stable structure. This vertical positioning allows the limiting plate to directly block abnormal vertical displacement of the hoisted object.
[0041] Furthermore, in the above technical solution, the triggering mechanism 30 is provided with a buffer device for buffering the impact force.
[0042] Furthermore, in the above technical solution, the buffer device includes a buffer spring and a buffer pad. The buffer spring is sleeved on the connecting rod 31, with one end fixed to the connecting rod 31 and the other end connected to the counterweight. The buffer pad is fixed on the contact surface of the locking tongue 21 and plays a buffering role when it contacts the locking groove 22.
[0043] Furthermore, in the above technical solution, the hook body 10, the self-locking mechanism 20, and the triggering mechanism 30 are all made of high-strength alloy steel.
[0044] The specific steps are as follows:
[0045] Hooking the load: When the hook body is not under any weight, the locking tongue of the self-locking mechanism disengages from the locking groove, and the opening is in the open state. At this time, align the load with the opening. Since the limiting plate is parallel to the plane of the opening and does not obstruct the normal entry of the load, the load can be smoothly hooked into the opening from below the limiting plate.
[0046] Lifting Operation: After the load is attached, as the hook body begins to bear the weight, the trigger mechanism actuates, and the counterweight drives the connecting rod to insert the locking tongue into the locking groove, locking the opening. During lifting, the limit plate plays a crucial role. When the load experiences abnormal vertical displacement due to shaking, collision, or other reasons, the limit plate will block the load, preventing it from slipping out of the opening. Simultaneously, the limit rod supports and positions the limit plate, ensuring the stability and reliability of the entire limiting structure.
[0047] Unloading the hoisted load: After hoisting to the designated location, when the hook body no longer bears the weight, the counterweight, under the action of gravity, drives the connecting rod to disengage the locking tongue from the locking groove, and the opening reopens. At this time, the hoisted load can be removed from the opening. Since the limit plate does not obstruct the removal of the hoisted load, the unloading process can proceed smoothly.
[0048] Specifically, the principle of this utility model is as follows: This self-locking anti-disengagement device mainly consists of a hook body, a self-locking mechanism, and a triggering mechanism.
[0049] The hook body is the basic structure of the entire device, including the hook body and the opening, which is used to attach the load. It is made of high-strength alloy steel, ensuring sufficient strength and durability when bearing heavy loads, and can adapt to various harsh working environments and high-intensity operation requirements;
[0050] The core components of the self-locking mechanism are the latch and the locking groove. The latch is movably mounted on the hook body, while the locking groove is located inside the opening. The latch has a wedge-shaped structure, and the locking groove is a matching wedge-shaped slot. This design allows the latch to fit tightly when inserted into the locking groove, providing reliable locking force. When the hook body is not under load, the counterweight in the trigger mechanism moves the connecting rod downward under its own weight, causing the latch to disengage from the locking groove. At this time, the opening is open, facilitating the attachment of the load. When the hook body is under load, the weight of the load is transmitted through the hook, causing the counterweight to overcome its own weight and move the connecting rod upward under the weight of the load. This causes the latch to insert into the locking groove, locking the opening and effectively preventing the load from slipping out.
[0051] One end of the triggering mechanism's connecting rod is connected to the locking tongue, and the other end is connected to the counterweight. The counterweight is detachable, allowing users to easily replace it with different weights to adjust the triggering mechanism's sensitivity and self-locking effect according to actual lifting needs. For example, when lifting lighter loads, a lighter counterweight can be selected to ensure self-locking with minimal changes in gravity; while when lifting heavier loads, a heavier counterweight is used to ensure the triggering mechanism's stability and reliability.
Claims
1. A self-locking anti-detachment lifting device, characterized in that, The system includes a hook body (10), a self-locking mechanism (20), and a triggering mechanism (30). The hook body (10) includes a hook body (11) and an opening (12), which is used to hook the load. The self-locking mechanism (20) is located inside the opening (12) and includes a locking tongue (21) and a locking groove (22). The locking tongue (21) is movably located on the hook body (11), and the locking groove (22) is located inside the opening (12). The triggering mechanism (30) is located below the hook body (10) and includes a connecting rod (31) and a counterweight. One end of the connecting rod (31) is connected to the locking tongue (21), and the other end is connected to the counterweight. The hook body (10) is provided with a limiting device (40) to prevent the load from swaying.
2. The self-locking anti-disengagement lifting device according to claim 1, characterized in that, When the hook body (10) is not under load, the counterweight moves the connecting rod (31) downward under the action of gravity, causing the locking tongue (21) to disengage from the locking groove (22), and the opening (12) is in an open state; when the hook body (10) is under load, the counterweight moves the connecting rod (31) upward under the action of the weight of the hoisted object, causing the locking tongue (21) to insert into the locking groove (22), and the opening (12) is in a locked state.
3. The self-locking anti-disengagement hoisting device according to claim 2, characterized in that, The latch (21) has a wedge-shaped structure, and the lock groove (22) is a wedge-shaped groove that matches the latch (21).
4. The self-locking anti-disengagement hoisting device according to claim 3, characterized in that, The locking tongue (21) and the connecting rod (31) are connected by a pin.
5. A self-locking anti-disengagement lifting device according to claim 4, characterized in that, The limiting device (40) includes a limiting plate (41), a limiting rod (42), and an adjusting bolt. The limiting plate (41) is disposed outside the opening (12) of the hook body (10). The limiting rod (42) is vertically fixed on the hook body (11). The adjusting bolt is disposed on the limiting rod (42) and is used to adjust the distance between the limiting plate (41) and the hook body (10).
6. A self-locking anti-disengagement lifting device according to claim 5, characterized in that, The limiting plate (41) is a flat plate structure, and the limiting rod (42) is a multi-rod structure.
7. A self-locking anti-disengagement lifting device according to claim 6, characterized in that, One end of the limiting rod (42) is fixed to the hook body (11) by welding, and the other end is connected to the limiting plate (41).
8. A self-locking anti-disengagement lifting device according to claim 7, characterized in that, The triggering mechanism (30) is equipped with a buffer device for buffering impact force.
9. A self-locking anti-disengagement lifting device according to claim 8, characterized in that, The buffer device includes a buffer spring and a buffer pad. The buffer spring is sleeved on the connecting rod (31), with one end fixed to the connecting rod (31) and the other end connected to the counterweight. The buffer pad is fixed to the contact surface of the latch (21) and plays a buffering role when it contacts the lock groove (22).
10. A self-locking anti-disengagement lifting device according to claim 9, characterized in that, The hook body (10), self-locking mechanism (20) and triggering mechanism (30) are all made of high-strength alloy steel.