Portable unhooking prevention device for travelling crane
By utilizing the lever principle and threaded connection through a convenient anti-disengagement device, the problem of hook loosening and falling off during overhead crane hoisting is solved, enabling safe and efficient hoisting operations, simplifying the operation process and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-03-31
AI Technical Summary
Accidents of heavy objects falling due to loose or detached hooks or broken wire ropes occur frequently during existing overhead crane hoisting operations. Furthermore, the traditional anti-detachment devices take too long to install and dismantle, affecting production efficiency.
A convenient anti-detachment hook device is designed, which utilizes the lever principle combined with the first and second U-shaped anti-detachment tubes. Through threaded connection and rotating handle, it can quickly hook and limit the position, preventing the hook from loosening or falling off.
It effectively prevents accidents caused by falling heavy objects, improves operational safety and efficiency, simplifies hook operation, saves assembly and disassembly time, and ensures safe and efficient operation of the production site.
Smart Images
Figure CN224062292U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of safety production equipment technology, specifically a convenient anti-disengagement device for vehicles. Background Technology
[0002] The heat treatment area of Nanjing Iron & Steel's medium and heavy plate and coil plant has four overhead cranes, all of which are double-hook disk cranes. When spare parts need to be transferred for lifting, the disks must be removed, and the load is lifted using a single hook. Due to the high potential energy of the heavy objects, the complexity of the operating environment, and the uncontrollability of human factors, hook detachment accidents occur frequently. These accidents not only damage equipment but can also cause personal injury and significant economic losses. Therefore, ensuring the safety of lifting operations and preventing heavy objects from detaching has become a problem to be solved. However, the conventionally used anti-detachment devices are cumbersome to disassemble each time, taking more than 10 minutes each time, which adversely affects the time-sensitive production site.
[0003] To address these safety and time-consuming issues, a convenient anti-derailment device for vehicle operation has been invented to resolve this safety hazard. Utility Model Content
[0004] In view of the problems existing in the prior art, this utility model proposes a convenient anti-disengagement device for cranes, which can effectively prevent the falling of heavy objects due to loosening or falling of the hook or breakage of the wire rope during the hoisting process, thereby protecting the safety of personnel, equipment and environment at the work site, while also improving work efficiency, making hoisting operations smoother and more efficient.
[0005] The technical solution of this utility model to solve the above technical problems is as follows: A convenient anti-detachment device for vehicles is provided, including an anti-detachment body. The anti-detachment body includes a first U-shaped anti-detachment tube and a second U-shaped anti-detachment tube. The two sides of the opening end of the first U-shaped anti-detachment tube are fixedly connected to the two sides of the opening end of the second anti-detachment tube, and the two are at a certain angle. Fixing holes are respectively provided on both sides of the opening end of the first U-shaped anti-detachment tube. A fixing sleeve communicating with the inside of the fixing hole is provided on the inner side of the fixing hole. A fixing rod is provided in each fixing hole and passes through the entire fixing sleeve. A screw hole is provided at the inner end of one fixing rod, and a threaded connection part adapted to the screw hole is provided at the inner end of the other fixing rod and passes through a fixing hole provided on the inner side of the hook. The two fixing rods are threadedly connected through the threaded connection part and the screw hole.
[0006] The further defined technical solution of this utility model is as follows:
[0007] Preferably, the length of the first U-shaped anti-detachment tube is shorter than the length of the second U-shaped anti-detachment tube.
[0008] Preferably, the length of the first U-shaped anti-detachment tube is greater than the opening length of the hook.
[0009] Preferably, the included angle between the first U-shaped anti-detachment tube and the second U-shaped anti-detachment tube is 30-60°.
[0010] Preferably, each of the fixed rods has a rotating handle welded to its outer end.
[0011] Preferably, a rubber layer is provided on the closed end of the first U-shaped anti-detachment tube.
[0012] The beneficial effects of this utility model are as follows: This utility model has a simple structure and utilizes the lever principle. When the hook is in use, lifting the second U-shaped anti-detachment tube causes the first U-shaped anti-detachment tube to rotate inward towards the hook head, thus easily hooking it into the lifting device. After releasing the hook, due to the combination of gravity and leverage, the device returns to its original position. The first U-shaped anti-detachment tube acts as a limit and tightening device to prevent the hook head from detaching. This effectively prevents accidents caused by loose or detached hooks or broken wire ropes during lifting, thus protecting the safety of personnel, equipment, and the environment at the work site. It also improves work efficiency, making lifting operations smoother and more efficient. Moreover, compared with traditional convenient anti-detachment devices, the operation of hooking and unhooking is simpler and faster, saving at least 10 minutes each time. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation Example
[0014] This embodiment provides a convenient anti-derailment device for vehicles, such as... Figure 1 As shown, the device includes an anti-detachment body, which comprises a first U-shaped anti-detachment tube 1 and a second U-shaped anti-detachment tube 2. The length of the first U-shaped anti-detachment tube is shorter than that of the second U-shaped anti-detachment tube, while the length of the first U-shaped anti-detachment tube is greater than the opening length of the hook. The two sides of the opening end of the first U-shaped anti-detachment tube are fixedly connected to the two sides of the opening end of the second anti-detachment tube, and the two are at a 60° angle. Fixing holes are provided on both sides of the opening end of the first U-shaped anti-detachment tube. A fixing sleeve 3 communicating with the inside of the fixing hole is provided on the inside of the fixing hole. A fixing rod 4 is provided in each fixing hole and passes through the entire fixing sleeve. One fixing rod has a screw hole at its inner end, and the other fixing rod has a threaded connection part that matches the screw hole at its inner end and passes through a fixing hole provided on the inside of the hook. The two fixing rods are threadedly connected through the threaded connection part and the screw hole. A rotating handle 5 is welded to the outer end of each fixing rod. A rubber layer is provided on the closed end of the first U-shaped anti-detachment tube.
[0015] This embodiment has a simple structure and utilizes the lever principle. When the hook is in operation, lifting the second U-shaped anti-detachment tube causes the first U-shaped anti-detachment tube to rotate inward towards the hook head, thus easily engaging the lifting device. After release, due to the combination of gravity and leverage, the device returns to its original position. The first U-shaped anti-detachment tube acts as a limit and tightening device, preventing the hook head from detaching. This effectively prevents accidents caused by loose or detached hooks or broken wire ropes during lifting, thus protecting the safety of personnel, equipment, and the environment at the work site. It also improves work efficiency, making lifting operations smoother and more efficient. Compared to traditional portable anti-detachment devices, it makes hook and hook removal operations simpler and faster, saving at least 10 minutes each time.
[0016] In addition to the above embodiments, this utility model may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.
Claims
1. A portable anti-unhooking device for a vehicle, comprising an anti-unhooking body, characterized in that, The anti-off body comprises a first U-shaped anti-off pipe and a second U-shaped anti-off pipe, the two open ends of the first U-shaped anti-off pipe are fixedly connected with the two open ends of the second U-shaped anti-off pipe, and the two are at a certain included angle, a fixed hole is arranged on each side of the open end of the first U-shaped anti-off pipe, a fixed sleeve in communication with the inside of the fixed hole is arranged on the inside of the fixed hole, a fixed rod is arranged in each fixed hole and penetrates through the entire fixed sleeve, the inner end of one of the fixed rods is provided with a screw hole, the inner end of the other fixed rod is provided with a threaded connection part matched with the screw hole, and the threaded connection part penetrates through a fixed hole arranged on the inside of the hook, and the two fixed rods are threadedly connected through the threaded connection part and the screw hole.
2. A portable anti-unhooking device for a vehicle according to claim 1, characterized in that: The length of the first U-shaped anti-off pipe is less than the length of the second U-shaped anti-off pipe.
3. A portable anti-unhooking device for a vehicle according to claim 2, characterized in that: The length of the first U-shaped anti-off pipe is greater than the open length of the hook.
4. A portable anti-unhooking device for a vehicle according to claim 1, characterized in that: The included angle between the first U-shaped anti-off pipe and the second U-shaped anti-off pipe is 30-60°.
5. A portable anti-unhooking device for a vehicle according to claim 1, characterized in that: A rotating handle is welded to the outer end of each fixed rod.
6. A portable anti-unhooking device for a vehicle according to claim 1, characterized in that: A rubber layer is arranged on the closed end of the first U-shaped anti-off pipe.