Anti-falling early warning type safety lifting hook
By designing an anti-fall warning mechanism in the lifting hook, and using components such as connecting blocks, snaps and early warning nuts, the firm fixing and early warning functions of the hook are achieved, solving the problem of the easy fall off and the inability to monitor the state of traditional hooks. Improve safety and work efficiency and reduce safety accidents.
Patent Information
- Application Number
- CN202420595643.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-03-26
AI Technical Summary
Traditional lifting hooks are prone to fall off during lifting, resulting in safety accidents, and the status of hooks and heavy objects cannot be monitored in real time, affecting safety and work efficiency.
A safety lifting hook with anti-falling warning is designed, adopting a structure including the hook body, anti-falling mechanism and early warning mechanism, through the connection block, front snap, rear snap, snap swivel shaft, limit plate and Components such as movable plates realize the firm fixation and early warning functions of the hook. The early warning mechanism monitors the status of the anti-detachment mechanism in real time through early warning nuts and indicator lights to prevent the occurrence of decoupling.
The reliability and work efficiency of the hook are improved, the probability of safety accidents is reduced, and the staff is promptly reminded through early warning mechanisms to reduce the risk of shedding.
Smart Images
Figure CN222225745U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lifting hooks, and particularly relates to an anti-falling early warning safety lifting hook. Background Art
[0002] The lifting hook is a component of a crane, which is often used to lift heavy objects. Although the hook only plays an auxiliary role for the crane, it plays a very important role. During lifting, the hook should be firmly fixed, the rotating part should be flexible, and the surface of the hook should be smooth. In order to prevent the hook from being unhooked by itself, a safety device to prevent accidental unhooking should be installed on the hook.
[0003] The hook is subjected to repeated impacts and heavy loads during lifting operations. Once it falls off, the heavy objects will fall, causing serious casualties. Therefore, the hook must have sufficient safety. Anti-falling and early warning are of great significance to the safe operation of cranes. The traditional hook anti-falling mainly prevents the accidental falling of the sling wire rope by buckles. The stability is poor during use, and the hook cannot show its own situation during lifting, so the staff cannot judge the status of the hook and the heavy object lifting ring. Summary of the invention
[0004] The utility model aims to overcome the deficiencies in the prior art and provide an anti-falling early warning safety lifting hook with a reasonable structure, which can ensure the anti-falling effect during transportation and reduce the probability of safety accidents.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A kind of anti-fall warning type safety lifting hook, comprising a hook body, an anti-fall mechanism and an early warning mechanism, the hook body is used to lift heavy objects, a connecting block is arranged at the hook tip of the hook body, the connecting block and the hook body are formed as one piece, the anti-fall mechanism is fixed by the connecting block, the anti-fall mechanism is arranged inside the hook body and comprises a front buckle, a rear buckle, a buckle swivel, a hook swivel, a limit plate and a movable plate, the hook swivel is plugged into the top of the hook body, the two ends of the hook swivel are located on both sides of the hook body and are both connected to one end of the rear buckle, the other end of the rear buckle is respectively sleeved on the two end sides of the buckle swivel, and the two end sides of the buckle swivel are hinged with the front buckle The front buckle and the rear buckle cooperate to block the opening of the hook body. At the same time, because the front buckle and the buckle swivel are in a hinged connection, the front buckle can rotate along the hook swivel, so that the bending and extension states between the front buckle and the rear buckle can be realized. The front buckle and the rear buckle at the same end of the buckle swivel correspond to each other and are provided with mutually communicating grooves, and limit plates are provided in the grooves. The top sides of the limit plates are fitted with movable plates, and fixing bolts are provided at both ends of the movable plates. The bottom ends of the fixing bolts pass through the movable plate and the limit plate in turn and are fixedly connected with the corresponding front buckle and rear buckle threads. The fixing bolts are threadedly sleeved with fixing screws The nut and the fixing nut are in contact with the outside of the movable plate. The position of the limit plate and the movable plate can be fixed by tightening the fixing nut and the fixing bolt, so that the front buckle and the rear buckle are completely fixed in the extended state, which can effectively avoid unhooking. When installing the device, only the front buckle needs to bend and stretch with the rear buckle through the buckle swivel shaft, which can not only ensure the reliability of the hook during hoisting, but also facilitate the disassembly of the limit plate and the movable plate through the fixing nut. Before installation, the buckle has a large opening and closing angle range, which is convenient for hooking the lifting ring of heavy objects, eliminating the difficult operation of traditional pressing or lifting buckles, and improving work efficiency. The top of the fixing bolt is sleeved with a pre- Warning nut, warning switches are provided on both sides of the bottom of the warning nut, and a warning indicator light is provided on the top. The warning switch and the warning indicator light form a loop. During installation, the warning switch can be made to contact the fixed nut. When the anti-slip mechanism clamps the hook, if there is a tendency of unhooking during lifting, the fixed nut will become loose, and then the fixed nut will squeeze the warning switch. The squeezing of the warning switch will close the loop with the warning indicator light, so that the warning indicator light will flash and alarm to prompt the staff. The warning indicator light cooperates with the warning switch and the warning nut to monitor the stress condition of the anti-slip mechanism in real time, reduce risks, and reduce the probability of safety accidents.
[0007] Furthermore, the connecting block is a cylindrical structure, and the front buckle ends are all concave arc-shaped. The outer structure of the connecting block is adapted to the arc-shaped structure of the front buckle end, so as to ensure the fit between the connecting block and the front buckle, facilitate the connection of the front buckle to the connecting block, and cooperate with the hook shaft to clamp and unhook the hook body when it is in a bent and extended state.
[0008] Furthermore, the length of the limit plate is consistent with the total length of the groove connecting the front buckle and the rear buckle. When the front buckle and the rear buckle are in the extended state, the limit plate is adapted to be buckled into the groove. By buckling and fixing the limit plate in the groove connecting the front buckle and the rear buckle, the state of the front buckle and the rear buckle can be restricted, and the bending of the front buckle after the installation is completed can be avoided.
[0009] Furthermore, a limit block is provided at a position corresponding to the hook tip on one side of the top of the hook body, and a baffle is fixed between the top sides of the movable plates, the baffle corresponding to the limit block, and the angle of the hook swivel or the buckle swivel after the installation is completed can be limited by the baffle. In the process of lifting the heavy object after the installation of the device is completed, if the lifting ring of the heavy object is driven to fall off, an outward extrusion force will be generated on the limit plate and the movable plate, either the front buckle will be disengaged from the connecting block, so that the entire anti-falling mechanism is rotated outward through the hook swivel, or the front buckle will be impacted during the falling process, first causing the limit plate and the movable plate to be damaged, causing the front buckle mouth to bend outward. No matter which method is used, when the outward bending process reaches a certain angle, the baffle on the top side of the movable plate will contact the limit block, so that the limit block will block the baffle and prohibit it from continuing to move, thereby preventing the front buckle from continuing to bend, thereby limiting the range of the front buckle to bend outward, preventing the lifting ring of the heavy object from falling off from the hook, and reducing the risk of falling off.
[0010] Compared with the prior art, the utility model has the following beneficial effects:
[0011] 1) During installation, the utility model only needs the front buckle to bend and stretch with the rear buckle through the buckle swivel shaft, which can not only ensure the reliability of the hook during hoisting, but also facilitate the removal of the limit plate and the movable plate through the fixing nut. Before installation, the buckle has a large opening and closing angle range, which is convenient for hooking the lifting ring of heavy objects, eliminating the difficult operation of traditional pressing or lifting buckles on site, thereby improving work efficiency;
[0012] 2) In the utility model, the top of each fixing bolt is sleeved with a warning nut, and warning switches are provided on both sides of the bottom of the warning nut, and a warning indicator light is provided on the top. The warning switch and the warning indicator light form a loop. When the anti-slip mechanism clamps the hook, if there is a tendency of detachment during the lifting process, the fixing nut will loosen, and the fixing nut will squeeze the warning switch, so that the warning indicator light will flash and alarm, prompting the staff. The warning indicator light cooperates with the warning switch and the warning nut to monitor the stress of the anti-slip mechanism in real time, thereby reducing risks and the probability of safety accidents;
[0013] 3) In the utility model, a limit block is provided on the top side of the hook body corresponding to the position of the hook tip, and a baffle is fixed between the top sides of the movable plates. The baffle can limit the angle of the hook swivel or the buckle swivel after installation to prevent the lifting ring of the heavy object from falling off from the hook and reduce the risk of falling off. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Attached Figure 1 This is a schematic diagram of the structure of an anti-falling early warning safety lifting hook of the utility model;
[0015] Attached Figure 2 This is a schematic diagram of the structure of the early warning mechanism in an anti-falling early warning safety lifting hook of the utility model;
[0016] Attached Figure 3 This is a schematic diagram of the structure of the anti-falling early warning safety lifting hook buckle in the unhooking state of the utility model;
[0017] In the figure: 1. hook body; 2. front buckle; 3. connecting block; 4. warning nut; 5. baffle; 6. movable plate; 7. hook swivel; 8. limit plate; 9. rear buckle; 10. buckle swivel; 11. warning switch; 12. warning indicator light; 13. fixing bolt; 14. fixing nut; 15. limit block. DETAILED DESCRIPTION
[0018] To facilitate the understanding of those skilled in the art, Figure 1-3 , the technical solution of the utility model is further specifically described.
[0019] A kind of anti-fall warning type safety lifting hook, comprising a hook body 1, an anti-fall mechanism, and an early warning mechanism, the hook body 1 is used to lift heavy objects, a connecting block 3 is arranged at the hook tip of the hook body 1, the connecting block 3 and the hook body 1 are integrally formed, and the anti-fall mechanism is fixed by the connecting block 3, the anti-fall mechanism is arranged on the inner side of the hook body 1 and comprises a front buckle 2, a rear buckle 9, a buckle swivel 10, a hook swivel 7, a limiting plate 8, and a movable plate 6, the hook swivel 7 is plugged into the top of the hook body 1, the two ends of the hook swivel 7 are located on both sides of the hook body 1 and are connected to one end of the rear buckle 9, the other end of the rear buckle 9 is respectively sleeved on both ends of the buckle swivel 10, and the buckle Front buckles 2 are hinged on both ends of the buckle shaft 10, and the front buckle 2 cooperates with the rear buckle 9 to seal the opening of the hook body 1. At the same time, since the front buckle 2 and the buckle shaft 10 are hingedly connected, the front buckle 2 can rotate along the hook shaft 7, so as to achieve the bending and extension states between the front buckle 2 and the rear buckle 9. The connecting block 3 is a cylindrical structure, and the ends of the front buckle 2 are concave arcs. The outer structure of the connecting block 3 is adapted to the arc structure of the end of the front buckle 2, so as to ensure the fit between the connecting block 3 and the front buckle 2, facilitate the connection of the front buckle 2 to the connecting block 3, and cooperate with the hook shaft 7 to clamp and unhook the hook body 1 when it is in the bending and extension states.
[0020] The front buckle 2 and the rear buckle 9 at the same end of the buckle shaft 10 correspond to each other and are provided with interconnected grooves, and a limiting plate 8 is provided in the groove. The length of the limiting plate 8 is consistent with the total length of the grooves interconnected by the front buckle 2 and the rear buckle 9. When the front buckle 2 and the rear buckle 9 are in the extended state, the limiting plate 8 is adapted to be buckled into the groove. By buckling the limiting plate 8 into the grooves interconnected by the front buckle 2 and the rear buckle 9 and fixing them, the state of the front buckle 2 and the rear buckle 9 can be restricted, and the bending of the front buckle 2 after the installation is completed can be avoided. The top side of the limiting plate 8 is fitted with a movable plate 6, and both ends of the movable plate 6 are provided with fixing bolts 13. The bottom end of the fixing bolt 13 passes through the movable plate 6 and the limiting plate 8 in turn and then engages with the corresponding front buckle 2 and rear buckle. 9 threaded fixed connection, the fixing bolts 13 are all threadedly sleeved with fixing nuts 14, and the fixing nuts 14 are all in contact with the outside of the movable plate 6. The fixing nuts 14 are tightened to cooperate with the fixing bolts 13 to fix the position of the limit plate 8 and the movable plate 6, so that the front buckle 2 and the rear buckle 9 are completely fixed in the extended state, which can effectively avoid unhooking. When installing the device, only the front buckle 2 needs to bend and stretch with the rear buckle 9 through the buckle rotating shaft 10, which can not only ensure the reliability of the hook during hoisting, but also can conveniently disassemble the limit plate 8 and the movable plate 6 through the fixing nuts 14. Before installation, the buckle 2 has a large opening and closing angle range, which is convenient for hooking the lifting ring of heavy objects, eliminating the difficult operation of traditional pressing or lifting buckles on site, thereby improving work efficiency.
[0021] The top of the fixing bolt 13 is sleeved with a warning nut 4, and the bottom two sides of the warning nut 4 are provided with warning switches 11, and the top is provided with a warning indicator light 12. The warning switch 11 and the warning indicator light 12 form a loop. During installation, the warning switch 11 can be made to contact the fixing nut 14. If the hook of the anti-slip mechanism is unhooked during the lifting process, the fixing nut 14 will be loosened, and then the fixing nut 14 will squeeze the warning switch 11. The squeezing of the warning switch 11 will close the loop with the warning indicator light 12, so that the warning indicator light 12 will flash and alarm, prompting the staff. The warning indicator light 12 cooperates with the warning switch 11 and the warning nut 4 to monitor the stress of the anti-slip mechanism in real time, reduce risks, and reduce the probability of safety accidents.
[0022] A limit block 15 is provided at a position corresponding to the hook tip on one side of the top of the hook body 1, and a baffle 5 is fixed between the top sides of the movable plate 6, and the baffle 5 corresponds to the limit block 15. The stop block can limit the angle of the hook swivel 7 or the buckle swivel 10 after the installation is completed. In the process of lifting heavy objects after the installation of the device, if the lifting ring of the heavy object falls off, an outward squeezing force will be generated on the limit plate 8 and the movable plate 6, or the front buckle 2 will be separated from the connecting block 3, so that the entire anti-slip mechanism will rotate outward through the hook swivel 7. Either the front buckle 2 will be impacted during the falling process, firstly causing damage to the limit plate 8 and the movable plate 6, causing the front buckle 2 to bend outwards. No matter which method is used, when the outward bending process reaches a certain angle, the baffle 5 on the top side of the movable plate 6 will contact the limit block 15, so that the limit block 15 will block the baffle 5 and prohibit it from continuing to move, thereby preventing the front buckle 2 from continuing to bend, thereby limiting the range of the front buckle 2 bending outwards, preventing the lifting ring of the heavy object from falling off from the hook, and reducing the risk of falling off.
[0023] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.
Claims
1. An anti-drop warning safety lifting hook, comprising a hook body, an anti-drop mechanism, and an early warning mechanism, characterized in that: A connecting block is provided at the hook tip of the hook body, and the connecting block is integrally formed with the hook body. The anti-slip mechanism is arranged on the inside of the hook body and includes a front buckle, a rear buckle, a buckle swivel, a hook swivel, a limit plate, and a movable plate. The hook swivel is plugged into the top of the hook body, and both ends of the hook swivel are located on both sides of the hook body and are connected to one end of the rear buckle, and the other end of the rear buckle is respectively sleeved on both end sides of the buckle swivel, and both end sides of the buckle swivel are hinged with front buckles, and the front buckle and the rear buckle at the same end of the buckle swivel The buckles correspond to each other and are provided with interconnected grooves, and limit plates are provided in the grooves. A movable plate is fitted on the top side of the limit plate, and fixing bolts are provided at both ends of the movable plate. The bottom ends of the fixing bolts pass through the movable plate and the limit plate in turn and are fixedly connected with the corresponding front buckles and rear buckles through threads. The fixing bolts are threadedly sleeved with fixing nuts, and the fixing nuts are in contact with the outside of the movable plate. Warning nuts are sleeved on the tops of the fixing bolts, and warning switches are provided on both sides of the bottom of the warning nuts, and a warning indicator light is provided on the top.
2. The anti-fall warning safety lifting hook according to claim 1 is characterized in that: The connecting block is a cylindrical structure, the front buckle ends are all concave arc-shaped, and the outer structure of the connecting block is compatible with the arc-shaped structure of the front buckle ends.
3. The anti-fall warning safety lifting hook according to claim 1 is characterized in that: The length of the limiting plate is consistent with the total length of the grooves communicating with the front buckle and the rear buckle, and the limiting plate is adapted to be buckled into the grooves when the front buckle and the rear buckle are in the extended state.
4. The anti-fall warning safety lifting hook according to claim 1, characterized in that: A limiting block is provided at a position corresponding to the hook tip on one side of the top of the hook body, and a baffle is fixed between the top sides of the movable plates, and the baffle corresponds to the limiting block.