Unhooking prevention mechanism
By designing an anti-disengagement mechanism and utilizing a combination of limit frames and support rods, the problems of disengagement risk and low efficiency of manual operation during aluminum coil hoisting were solved, achieving safe and stable hoisting of aluminum coils and efficient disengagement operation.
Patent Information
- Application Number
- CN202423167019.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing anti-disengagement mechanisms pose a risk of disengagement during aluminum coil hoisting, and manual operation is inefficient, making it difficult to simultaneously guarantee safety and high efficiency.
An anti-disengagement mechanism was designed, including a first limiting frame, a second limiting frame, and a support rod. Through the combination structure of connecting steel wire and unlocking handle, the rotation and limiting of the hinge seat are realized, ensuring the stability of the aluminum coil during hoisting, and disengagement can be achieved by a single person.
This effectively avoids the risk of aluminum coil products falling off during hoisting, improves the efficiency and safety of manual unhooking, and reduces the number of operators required.
Smart Images
Figure CN223973703U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aluminum processing, and in particular to an anti-disengagement mechanism. Background Technology
[0002] During the production of aluminum coils, aluminum processing companies need to use overhead cranes to transfer the aluminum coils to designated locations for stacking.
[0003] Currently, clamp-type lifting devices are typically installed on overhead crane hooks. When aluminum coils are lifted, their own weight clamps them together, and when the coils are supported in place, they are pressed down and opened, achieving automatic loading or unloading. The upper part of this clamp-type lifting device is a rigid lifting ring, which is fitted onto the overhead crane hook and is protected by an anti-disengagement mechanism to prevent accidental disengagement.
[0004] Typically, the anti-detachment mechanism is installed by pressing the hook head of the hook with the force of a spring or gravity. This type of anti-detachment mechanism has a height gap with the rigid lifting ring of the clamp-type lifting device. The clamp-type lifting device may jump at this height gap, causing the aluminum coil product to fall off. In addition, when it is necessary to detach the clamp-type lifting device for maintenance, one person needs to remotely operate the crane hook while another person opens the anti-detachment mechanism, resulting in low manual efficiency.
[0005] Therefore, designing a stable, reliable, and efficient anti-disengagement mechanism is a problem that needs to be solved by those skilled in the art. Summary of the Invention
[0006] The purpose of this utility model is to address the shortcomings of existing technologies by providing an anti-disengagement mechanism. This mechanism has a simple structure and low processing cost. In addition to preventing accidental disengagement, it can effectively prevent the clamp-type hoisting device from jumping and facilitates manual disengagement.
[0007] The technical solution of this utility model is: an anti-disengagement mechanism, including a crane hook, a first limiting frame, and a second limiting frame. A hinge seat is provided on the hook tail of the crane hook, and a connecting steel wire is sleeved in the hinge seat. The first limiting frame and the second limiting frame are both U-shaped structures composed of a connecting section and two straight sections. The interval between the two straight sections of the U-shaped first limiting frame and the second limiting frame is adapted to the thickness of the crane hook. The first limiting frame and the second limiting frame are distributed at an acute angle, and a support rod is fixedly connected between the corresponding straight sections to form an integral structure. The two ends of the connecting steel wire pass through the extension ends of the corresponding straight sections of the first limiting frame and the second limiting frame, respectively, and are bent and limited. The connecting section of the first limiting frame is positioned by the outside of the crane hook head, the support rod is limited by the top of the rigid lifting ring of the clamp-type lifting device, and the connecting section of the second limiting frame is limited by the bottom of the hook arm of the crane hook. The combination constitutes an anti-disengagement mechanism.
[0008] An unlocking handle is fitted onto the connecting section of the second limiting frame. The unlocking handle is offset from the crane hook, and the handle section extends vertically downward.
[0009] The straight sections of the first and second limiting frames are respectively provided with connecting holes, and the two ends of the connecting steel wire pass through the corresponding connecting holes and are bent 180° to form a limit.
[0010] Nuts are welded to the straight sections of the first and second limiting frames to form connecting holes.
[0011] The two ends of the support rod are welded and fixed to the corresponding straight segments.
[0012] The above technical solution has the following beneficial effects:
[0013] 1. The anti-disengagement mechanism includes a crane hook, a first limiting frame, and a second limiting frame. The crane hook is driven by a crane in the factory area to move in three dimensions. A hinge seat is provided on the hook tail of the crane hook, and a connecting steel wire is sleeved in the hinge seat. The connecting steel wire can elastically deform under external force. Both the first and second limiting frames are U-shaped structures composed of a connecting section and two straight sections. The distance between the two straight sections of the U-shaped first and second limiting frames is adapted to the thickness of the crane hook, meaning the crane hook can pass through the internal space of the first and second limiting frames. The first and second limiting frames are distributed at acute angles, and support rods are fixedly connected between the corresponding straight sections to form an integral structure; that is, the first limiting frame, the second limiting frame, and the support rods form an "A-type" structure. The two ends of the connecting steel wire pass through the extensions of the corresponding straight sections of the first and second limiting frames, respectively, and are bent and limited, allowing the first and second limiting frames and the support rod, which are in an "A-shape" structure, to rotate around the hinge seat. Furthermore, the position of the first and second limiting frames and the support rod, which are in an "A-shape" structure, can be adjusted by the elastic deformation of the connecting steel wire. The connecting section of the first limiting frame is positioned by the outside of the hook head of the crane hook, the support rod is limited by the top of the rigid lifting ring of the clamp-type lifting device, and the connecting section of the second limiting frame is limited by the bottom of the hook arm of the crane hook. Together, they form an anti-disengagement mechanism. Under normal circumstances, the anti-disengagement mechanism is in place synchronously with the rigid lifting ring (the rigid lifting ring is supported at the bottom of the groove of the crane hook) and its position is limited by the first limiting frame. Because the second limiting frame of the anti-disengagement mechanism is restricted from upward movement by the bottom of the crane hook, the rigid lifting ring supported at the bottom of the groove of the crane hook is limited downward by the support rod, preventing the clamp-type lifting device from jumping on the crane hook and ensuring smooth transport. To ensure the safety of aluminum coil products, when manual unhooking is required (with the clamp-type lifting device supported on the ground), the operator uses one hand to restrict the position of the second limit frame, and the other hand to remotely move the crane slightly away from the opening of the crane hook. This causes the second limit frame, the first limit frame, and the rigid lifting ring to move relative to the crane hook towards the hook head, allowing the second limit frame to disengage from the bottom of the crane hook arm. The other hand remotely moves the crane hook slightly downward, causing the anti-disengagement mechanism to rotate around the hinge seat. At the same time, the support rod releases the restriction on the rigid lifting ring, and the rigid lifting ring disengages from the crane hook. Unhooking can be completed by a single person, effectively improving manual efficiency.
[0014] 2. An unlocking handle is fitted on the connecting section of the second limit frame. The unlocking handle is offset from the crane hook and the handle section extends vertically downward. When manually unhooking, the operator can directly hold the unlocking handle to restrict the position of the second limit frame, which is convenient for the operator and ensures the operator's safety.
[0015] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details. Attached Figure Description
[0016] Figure 1This is a schematic diagram of the structure of this utility model.
[0017] In the attached diagram, 1 is the first limiting frame, 2 is the second limiting frame, 3 is the hinge seat, 4 is the connecting steel wire, 5 is the connecting section, 6 is the straight section, 7 is the support rod, and 8 is the unlocking handle. Detailed Implementation
[0018] See Figure 1 This is a specific embodiment of an anti-disengagement mechanism. The anti-disengagement mechanism includes a crane hook, a first limiting frame 1, and a second limiting frame 2. A hinge seat 3 is provided on the hook tail of the crane hook, and a connecting steel wire 4 is sleeved in the hinge seat 3. Typically, an iron block is welded to the hook tail position of the crane hook, and a hole is drilled in the iron block to form the hinge seat. Obviously, the projection of the hinge seat is located at the bottom of the groove of the crane hook. Both the first limiting frame 1 and the second limiting frame 2 are U-shaped structures formed by connecting segments 5 and two straight segments 6. The distance between the two straight segments of the U-shaped first limiting frame 1 and second limiting frame 2 is adapted to the thickness of the crane hook. In this embodiment, both the first limiting frame and the second limiting frame are formed by bending steel bars. The first limiting frame 1 and the second limiting frame 2 are distributed at an acute angle, and the corresponding straight segments are fixedly connected to the support rod 7 to form an integral structure. Specifically, the two ends of the support rod are fixedly connected to the corresponding straight segments by welding. Obviously, the first limiting frame, the second limiting frame, and the support rod are connected to form an "A-type" structure. The two ends of the connecting steel wire 4 pass through the extension ends of the corresponding straight segments of the first limiting frame 1 and the second limiting frame 2, and are bent and limited. Specifically, the extension ends of the straight segments of the first limiting frame and the second limiting frame are respectively welded with nuts to form connecting holes. The two ends of the connecting steel wire 4 pass through the corresponding connecting holes and are bent 180° to form a limit. The connecting segment of the first limiting frame 1 is positioned by the outside of the crane hook head, the support rod 7 is limited by the top of the rigid lifting ring of the clamp-type lifting device, and the connecting segment of the second limiting frame 2 is limited by the bottom of the hook arm of the crane hook, which together form an anti-disengagement mechanism.
[0019] Furthermore, to facilitate operation by staff, an unlocking handle 8 is fitted on the connecting section of the second limit frame 2. The unlocking handle 8 is offset from the crane hook, and the handle section extends vertically downward.
[0020] The working principle of this utility model is as follows: Under normal circumstances, the anti-disengagement mechanism is synchronously positioned with the rigid lifting ring (the rigid lifting ring is supported at the bottom of the trench of the gantry hook), and its position is limited by the first limiting frame. Since the second limiting frame of the anti-disengagement mechanism is restricted from moving upward by the bottom of the gantry hook, the rigid lifting ring supported at the bottom of the trench of the gantry hook is limited downward by the support rod, preventing the clamp-type lifting device from jumping on the gantry hook and ensuring the safety of the transported aluminum coil products. When manual unhooking is required (the clamp-type lifting device is supported on the ground), the operator uses one hand to limit the position of the second limiting frame and the other hand to remotely move the gantry crane slightly away from the opening of the gantry hook, so that the second limiting frame, the first limiting frame, and the rigid lifting ring move relative to the gantry hook toward the hook head. The second limiting frame is released from the restriction of the bottom of the gantry hook arm, and the gantry hook is remotely moved downward slightly, causing the anti-disengagement mechanism to rotate around the hinge seat. At the same time, the support rod releases the restriction on the rigid lifting ring, and the rigid lifting ring is released from the gantry hook. Unhooking can be completed by a single person, effectively improving manual efficiency.
Claims
1. An anti-unhooking mechanism comprising a trolley hook, characterised in that: Also include first limiting frame (1), second limiting frame (2), the hook tail of the trolley hook is provided with a hinged seat (3), the hinged seat (3) is provided with a connecting steel wire (4), The first limiting frame (1), the second limiting frame (2) are both U-shaped structures composed of a connecting segment (5) and two straight segments (6), the interval distance between the two straight segments of the U-shaped first limiting frame (1) and the second limiting frame (2) is adapted to the thickness of the trolley hook, The first limiting frame (1) and the second limiting frame (2) are arranged at an acute angle, and a supporting rod (7) is fixedly connected between the corresponding straight segments, forming an integral structure, Both ends of the connecting steel wire (4) pass through the extension ends of the corresponding straight segments of the first limiting frame (1) and the second limiting frame (2) respectively, and are bent and limited, the connecting segment of the first limiting frame (1) is positioned by the outer side of the hook head of the trolley hook, the supporting rod (7) is positioned by the top of the rigid lifting ring of the clamp type lifting device, and the connecting segment of the second limiting frame (2) is positioned by the bottom of the hook arm of the trolley hook, thereby forming an anti-unhooking mechanism.
2. The anti-unhooking mechanism according to claim 1, characterized in that: The connecting segment of the second limiting frame (2) is provided with an unlocking handle (8), which is offset from the trolley hook and has a handle segment extending vertically downward.
3. The anti-unhooking mechanism according to claim 1, characterized in that: The straight segments of the first limiting frame (1) and the second limiting frame (2) are respectively provided with connecting holes, both ends of the connecting steel wire (4) pass through the corresponding connecting holes and are bent by 180° to form a limiting position.
4. The anti-unhooking mechanism according to claim 3, characterized in that: The straight segments of the first limiting frame (1) and the second limiting frame (2) are respectively provided with connecting holes, both ends of the connecting steel wire (4) pass through the corresponding connecting holes and are bent by 180° to form a limiting position.
5. The anti-unhooking mechanism of claim 1, wherein: Both ends of the supporting rod (7) are respectively welded and fixed with the corresponding straight segments.