A lifting hook with automatic disengagement function

Abstract

The utility model relates to a steel structure hoisting construction technology field discloses a hoisting hook with automatic unhooking function, including the fixed plate of symmetrical arrangement, one side fixed plate is equipped with bolt one and bolt two respectively down, and one end of bolt one and bolt two is connected with the nut through two fixed plates, and the hook main part is rotatably sleeved between the fixed plate and the outside of bolt one, and the side wall of the fixed plate close to the nut side is equipped with the anti -unhooking mechanism, the anti -unhooking mechanism includes the fixed base, is equipped with a plurality of fixed rods on the fixed base outer wall, and the fixed rod is all fixedly connected with the limiting frame away from the fixed base one end, and the limiting frame is sleeved on the outside of nut, and the rotating rod is rotatably installed in the fixed base, and the outer wall of rotating rod is equipped with the support rod symmetrically, and the support rod one end is hinged with the sliding block through the connecting rod, the utility model restricts bolt and nut loosening through the anti -unhooking mechanism, and the limiting assembly prevents the rotating rod accidental rotation and is convenient to dismount, and the hook main part realizes automatic unhooking with eccentricity, and practical convenient.

Description

Technical Field

[0001] This utility model relates to the field of steel structure hoisting construction technology, and in particular to a hoisting hook with automatic detachment function. Background Technology

[0002] In steel structure hoisting construction, the hoisting hook is a key component connecting the hoisting machinery and the steel components. Its performance directly affects the efficiency and safety of the hoisting operation. To solve the problems of high safety risks and low work efficiency of the traditional manual hook unhooking method, relevant technical fields have developed hoisting hook devices that can realize automatic unhooking. Such devices are usually assembled from multiple parts connected by bolts. After being processed in the factory, they can be directly used for on-site hoisting. The process of "hooking - hoisting - hook release - automatic hook unhooking" realizes automated operation, effectively reducing manual intervention and improving the convenience of hoisting and transportation.

[0003] However, the bolt connection of the existing automatic detachment lifting hook lacks a targeted anti-loosening structure. In the actual lifting process, the hook needs to withstand the alternating load of the heavy object being lifted, the vibration of the lifting machinery, and the impact of the construction site, which can easily lead to the bolts loosening, thereby weakening the assembly and fixing effect of the lifting hook and affecting the stable operation of the device. Utility Model Content

[0004] In view of the fact that the bolt connection of the existing assembled hoisting hook lacks a targeted anti-loosening structure, the bolts are prone to loosening when subjected to alternating loads, vibration and impact, which weakens the assembly and fixation effect and affects the stable operation of the device, this utility model is proposed.

[0005] To solve the above technical problems, this utility model provides the following technical solution: a lifting hook with automatic detachment function, including symmetrically arranged fixing plates, one bolt and two bolts respectively provided on the upper and lower sides of one side of the fixing plate, and two bolts are provided. One end of the bolts and one bolts respectively pass through the two fixing plates and are connected to nuts. The hook body is rotatably sleeved on the fixing plates outside the bolts. The side wall of the fixing plate near the nut is provided with an anti-detachment mechanism.

[0006] The anti-detachment mechanism includes a fixed seat, which is located between bolt two and bolt one. The outer wall of the fixed seat is provided with several fixed rods, and the end of each fixed rod away from the fixed seat is fixedly connected to a limit frame, which is sleeved on the outside of the nut. A rotating rod is rotatably installed inside the fixed seat. Support rods are symmetrically provided on the outer wall of the rotating rod, and a slider is hinged to one end of the support rod through a connecting rod.

[0007] As a preferred embodiment, the anti-detachment mechanism further includes a sliding rod. The bottom of the fixed base has several symmetrically arranged grooves communicating with the interior of the fixed base. The sliding rod is fixedly installed within the grooves. The slider is slidably sleeved on the outside of the sliding rod. A number of connecting grooves adapted to the slider are provided on the side wall of the fixed plate near the fixed base. A baffle is sleeved on the outer wall of the rotating rod inside the fixed base, and the baffle is fixedly connected to the inner wall of the fixed base. A torsion spring is sleeved on the outer side of the rotating rod between the baffle and the support rod, and both ends of the torsion spring are fixedly connected to the baffle and the rotating rod, respectively. A limiting component for limiting the rotation rod is provided on one side of the baffle. One end of the rotating rod extends to the outside of the fixed base and is connected to a handle.

[0008] As a preferred embodiment, the limiting assembly includes guide rods symmetrically arranged on the side of the inner baffle of the fixed seat away from the torsion spring. A ring plate is movably installed inside the fixed seat and slidably sleeved on the outside of the two guide rods. A spring is sleeved on the outside of the guide rod between the ring plate and the baffle. A ratchet is sleeved on the outer wall of the rotating rod on the inner side of the ring plate. A limiting piece that meshes with the ratchet is symmetrically arranged on the inner wall of the ring plate. A push block is symmetrically arranged on the end of the ring plate away from the baffle and extends to the outside of the fixed seat.

[0009] As a preferred embodiment, the slider has an L-shaped structure, the rotating rod is rotatably connected to the fixed seat through a bearing, the limiting frame is adapted to the nut, and the limiting frame has a hexagonal structure.

[0010] As a preferred embodiment, the limiting piece is a metal spring, and the length of the push block located on the outer side of the fixed seat is greater than or equal to the thickness of the ratchet.

[0011] As a preferred embodiment, the hook body includes a hook portion and an eccentric portion, the lower end of the eccentric portion is fixedly connected to the top of one side of the hook portion, and the hook portion and the eccentric portion are integrally formed.

[0012] As a preferred embodiment, the side wall of the fixing plate and the top of the second bolt are provided with hanging holes, and the side wall of the fixing plate away from the nut is provided with limiting grooves that are adapted to the first bolt and the second bolt.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] 1. This utility model, through an anti-detachment mechanism, allows the fixing plate and hook body to be assembled using bolts one and two. Twisting the handle drives the rotating rod to rotate, thereby driving the support rod. Through the connecting rod, the slider moves along the sliding rod towards the rotating rod. Then, the limiting frame is fitted over the three nuts, and the slider is inserted into the connecting groove. The torsion spring force then resets the slider, completing the connection between the fixing seat and the fixing plate. Combined with the limiting groove, bolts one and two and the nuts are restricted, preventing loosening during hoisting and ensuring the assembly and fixing effect of the hoisting hook is maintained, thus avoiding problems that could affect the stable operation of the device. This enhances its practicality.

[0015] 2. This utility model uses a limiting component to limit the rotating rod through a limiting plate and a ratchet, preventing accidental triggering of the rotating rod to cause the slider to move, thereby affecting the connection and fixation between the fixed seat and the fixed plate. When it is necessary to disassemble the fixed seat, the push block can be pushed to drive the ring plate to squeeze the spring along the guide rod, and at the same time, the limiting plate and the ratchet will be misaligned and contacted to limit the rotating rod, thereby releasing the restriction on the rotating rod and allowing the fixed seat to be disassembled.

[0016] 3. The hook body of this utility model, composed of a hook part and an eccentric part, allows the hook body to rotate around the bolt after hoisting by the gravity of the eccentric part, thus achieving automatic unhooking and making it more convenient to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure between the fixing plate and the second bolt of this utility model;

[0020] Figure 4 This is a partial cross-sectional structural diagram of the fixing plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure between the fixed base and the slider of this utility model;

[0022] Figure 6 This is a partial cross-sectional structural diagram of the fixing base of this utility model;

[0023] Figure 7 This is a schematic diagram of the structure between the rotating rod, baffle, ring plate and limiting piece of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Fixing plate; 2. Hook body; 3. Hanging hole; 4. Bolt 1; 5. Bolt 2; 6. Nut; 7. Hook part; 8. Eccentric part; 9. Fixing seat; 10. Fixing rod; 11. Limiting frame; 12. Sliding rod; 13. Sliding block; 14. Sliding groove; 15. Connecting groove; 16. Rotating rod; 17. Baffle; 18. Torsion spring; 19. Support rod; 20. Connecting rod; 21. Guide rod; 22. Ring plate; 23. Spring; 24. Limiting piece; 25. Ratchet; 26. Push block. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, a lifting hook with automatic detachment function is provided, including symmetrically arranged fixing plates 1. One side of the fixing plate 1 is provided with bolt 4 and bolt 5 respectively at the top and bottom, and there are two bolts 5. One end of bolt 4 and bolt 5 respectively passes through the two fixing plates 1 and is connected to a nut 6. The hook body 2 is rotatably sleeved on the fixing plates 1 outside the bolt 4. The side wall of the fixing plate 1 near the nut 6 is provided with an anti-detachment mechanism. Stable assembly is achieved by bolt 4 and bolt 5 passing through the fixing plate 1 and connecting to the nut 6. The anti-detachment mechanism provides a basis for subsequent anti-loosening and ensures the initial connection reliability of the overall structure.

[0028] The anti-loosening mechanism includes a fixed base 9, which is located between bolt 2 5 and bolt 1 4. The outer wall of the fixed base 9 is provided with several fixed rods 10, and the ends of the fixed rods 10 away from the fixed base 9 are all fixedly connected to limit frames 11. The limit frames 11 are sleeved on the outside of the nut 6. A rotating rod 16 is rotatably installed inside the fixed base 9. The outer wall of the rotating rod 16 is symmetrically provided with support rods 19, and one end of the support rod 19 is hinged to a slider 13 through a connecting rod 20. The limit frame 11 sleeved on the nut 6 can restrict the rotation of the nut 6. The cooperation of the rotating rod 16, the support rod 19 and the slider 13 provides a transmission basis for the connection between the fixed base 9 and the fixed plate 1, and enhances the linkage of the anti-loosening structure.

[0029] In this example, the anti-detachment mechanism also includes a slide rod 12. The bottom of the fixed base 9 has several symmetrically arranged grooves 14 communicating with the interior of the fixed base 9. The slide rod 12 is fixedly installed in the grooves 14. The slider 13 is slidably sleeved on the outside of the slide rod 12. The side wall of the fixed plate 1 near the fixed base 9 has several connecting grooves 15 adapted to the slider 13. The outer wall of the rotating rod 16 is fitted with a baffle 17 inside the fixed base 9, and the baffle 17 is fixedly connected to the inner wall of the fixed base 9. The outer side of the rotating rod 16 is fitted with the baffle 17. A torsion spring 18 is sleeved between the support rod 19 and the support rod 19, and the two ends of the torsion spring 18 are fixedly connected to the baffle 17 and the rotating rod 16 respectively. A limiting component for limiting the rotating rod 16 is provided on one side of the baffle 17. One end of the rotating rod 16 extends to the outside of the fixed seat 9 and is connected to a handle. The slide rod 12 cooperates with the slide groove 14 to ensure the stable sliding of the slider 13. The torsion spring 18 can provide a restoring force to make the slider 13 tightly inserted into the connecting groove 15. The handle makes it easy to operate the rotating rod 16, improving the installation convenience and fixing reliability of the anti-detachment mechanism.

[0030] In this example, the limiting component includes guide rods 21, which are symmetrically arranged on the side of the inner baffle 17 of the fixed base 9 away from the torsion spring 18. An annular plate 22 is movably installed inside the fixed base 9 and is slidably sleeved on the outside of the two guide rods 21. A spring 23 is sleeved on the outside of the guide rods 21 between the annular plate 22 and the baffle 17. A ratchet 25 is sleeved on the outer wall of the rotating rod 16 on the inner side of the annular plate 22. A limiting piece 24 that meshes with the ratchet 25 is symmetrically arranged on the inner wall of the annular plate 22. A push block 26 is symmetrically arranged on the end of the annular plate 22 away from the baffle 17 and extends to the outside of the fixed base 9. The engagement of the ratchet 25 with the limiting piece 24 can effectively limit the accidental rotation of the rotating rod 16. The spring 23 provides elastic force to ensure the stability of the limiting. The push block 26 facilitates the release of the limiting and realizes the controllable disassembly of the anti-detachment mechanism, taking into account both safety and ease of maintenance.

[0031] In this example, the slider 13 has an L-shaped structure, the rotating rod 16 is rotatably connected to the fixed seat 9 through the bearing, the limiting frame 11 is adapted to the nut 6, and the limiting frame 11 has a hexagonal structure; the L-shaped slider 13 enhances the engagement stability with the connecting groove 15, the bearing ensures that the rotating rod 16 rotates flexibly, and the hexagonal limiting frame 11 adapted to the nut 6 can accurately limit the circumferential rotation of the nut 6, improving the anti-loosening effect.

[0032] In this example, the limiting piece 24 is a metal spring. When the limiting piece 24 is a metal spring, the rotating rod 16 can rotate normally in one direction and lock when it reverses. The length of the push block 26 located outside the fixed base 9 is greater than or equal to the thickness of the ratchet 25. The limiting piece 24, which is a metal spring or a hard metal piece, ensures reliable engagement with the ratchet 25. The length design of the push block 26 ensures that the limiting can be completely released, improving the practicality of the limiting component.

[0033] In this example, the hook body 2 includes a hook part 7 and an eccentric part 8. The lower end of the eccentric part 8 is fixedly connected to the top of one side of the hook part 7. The hook part 7 and the eccentric part 8 are integrally formed structures. The integrally formed structure enhances the strength of the hook body 2. The eccentric part 8 uses gravity to achieve automatic unhooking, thereby improving the efficiency of hoisting operations.

[0034] In this example, the side wall of the fixing plate 1 and the top of the second bolt 5 are provided with hanging holes 3. The side wall of the fixing plate 1 away from the nut 6 is provided with limiting grooves that are adapted to the first bolt 4 and the second bolt 5. The hanging holes 3 facilitate connection with lifting machinery, and the limiting grooves further restrict the position of the bolts, enhance the overall structural stability, and avoid the risk of loosening caused by bolt shaking.

[0035] The working principle of this utility model is as follows:

[0036] Assembly and fixing stage: The two fixing plates 1 are connected through bolt 4 and bolt 5 and tightened with nut 6. The hook body 2 is rotated and sleeved on the outside of bolt 4 to complete the basic structure assembly. At this time, the fixing seat 9 of the anti-loosening mechanism is sleeved with nut 6 through the limiting frame 11, which initially restricts the rotation of nut 6 and provides a premise for preventing loosening.

[0037] Locking stage of the anti-detachment mechanism: Rotate the handle of the rotating rod 16 to drive the support rod 19 to drive the slider 13 to slide along the slide rod 12 through the connecting rod 20. After the slider 13 is aligned with the connecting groove 15, the torque of the torsion spring 18 is used to reset the slider 13 and lock it into the connecting groove 15, so as to achieve a rigid connection between the fixed seat 9 and the fixed plate 1. At the same time, the limiting piece 24 of the limiting component engages with the ratchet 25 to limit the accidental rotation of the rotating rod 16 and ensure that the anti-detachment structure is stable and effective.

[0038] During the hoisting operation: the device is connected to the hoisting machinery through the hanging hole 3. The hook part 7 of the hook body 2 hooks the heavy object. During the hoisting process, when bolt 1 4 and bolt 2 5 are subjected to alternating loads and vibrations, the limit frame 11 restricts the rotation of nut 6 and the rigid connection between the fixed seat 9 and the fixed plate 1 restricts the displacement of bolts, thus preventing bolts from loosening.

[0039] Automatic unhooking and disassembly stage: After hoisting is completed, the hook is released and the hook body 2 rotates naturally around the bolt 4 with the help of the gravity of the eccentric part 8, thus achieving automatic unhooking; if disassembly and maintenance are required, push the push block 26 to compress the ring plate 22 and spring 23, which will cause the limit plate 24 to separate from the ratchet 25, release the restriction of the rotating rod 16, and rotate the handle in the opposite direction to make the slider 13 disengage from the connecting groove 15. After removing the fixed seat 9, the nut 6 can be loosened to disassemble the parts.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A lifting hook with automatic detachment function, comprising symmetrically arranged fixing plates (1), characterized in that: One side of the fixed plate (1) is provided with bolt 1 (4) and bolt 2 (5) respectively, and there are two bolts 2 (5). One end of bolt 1 (4) and bolt 2 (5) respectively passes through the two fixed plates (1) and is connected to a nut (6). The fixed plates (1) are rotatably sleeved on the outside of bolt 1 (4). The side wall of the fixed plate (1) near the nut (6) is provided with an anti-detachment mechanism. The anti-detachment mechanism includes a fixed seat (9), which is located between bolt two (5) and bolt one (4). The outer wall of the fixed seat (9) is provided with several fixed rods (10), and the end of the fixed rod (10) away from the fixed seat (9) is fixedly connected to a limit frame (11). The limit frame (11) is sleeved on the outside of the nut (6). A rotating rod (16) is rotatably installed inside the fixed seat (9). The outer wall of the rotating rod (16) is symmetrically provided with support rods (19), and one end of the support rod (19) is hinged to a slider (13) through a connecting rod (20).

2. A lifting hook with automatic detachment function according to claim 1, characterized in that: The anti-detachment mechanism also includes a slide rod (12). The bottom of the fixed base (9) has several symmetrically arranged grooves (14) communicating with the interior of the fixed base (9). The slide rod (12) is fixedly installed in the grooves (14). The slider (13) is slidably sleeved on the outside of the slide rod (12). The side wall of the fixing plate (1) near the fixed base (9) has several connecting grooves (15) adapted to the slider (13). The outer wall of the rotating rod (16) is connected to the fixed base (9). 9) An inner baffle (17) is provided, and the baffle (17) is fixedly connected to the inner wall of the fixed seat (9). A torsion spring (18) is provided on the outer side of the rotating rod (16) between the baffle (17) and the support rod (19), and the two ends of the torsion spring (18) are fixedly connected to the baffle (17) and the rotating rod (16) respectively. A limiting component for limiting the rotating rod (16) is provided on one side of the baffle (17). One end of the rotating rod (16) extends to the outside of the fixed seat (9) and is connected to a handle.

3. A lifting hook with automatic detachment function according to claim 2, characterized in that: The limiting component includes a guide rod (21), and the guide rod (21) is symmetrically arranged on the side of the inner baffle (17) of the fixed seat (9) away from the torsion spring (18). A ring plate (22) is movably installed in the fixed seat (9), and the ring plate (22) is slidably sleeved on the outside of the two guide rods (21). A spring (23) is sleeved on the outside of the guide rod (21) between the ring plate (22) and the baffle (17). A ratchet (25) is sleeved on the outer wall of the rotating rod (16) on the inner side of the ring plate (22). A limiting piece (24) that meshes with the ratchet (25) is symmetrically arranged on the inner wall of the ring plate (22). A push block (26) is symmetrically arranged on the end of the ring plate (22) away from the baffle (17), and the push block (26) extends to the outside of the fixed seat (9).

4. A lifting hook with automatic detachment function according to claim 3, characterized in that: The slider (13) has an L-shaped structure, the rotating rod (16) is rotatably connected to the fixed seat (9) through the bearing, the limiting frame (11) is adapted to the nut (6), and the limiting frame (11) has a hexagonal structure.

5. A lifting hook with automatic detachment function according to claim 3, characterized in that: The limiting piece (24) is a metal spring, and the length of the push block (26) located outside the fixed seat (9) is greater than or equal to the thickness of the ratchet (25).

6. A lifting hook with automatic detachment function according to claim 2, characterized in that: The hook body (2) includes a hook part (7) and an eccentric part (8). The lower end of the eccentric part (8) is fixedly connected to the top of one side of the hook part (7). The hook part (7) and the eccentric part (8) are integrally formed structures.

7. A lifting hook with automatic detachment function according to claim 2, characterized in that: The side wall of the fixing plate (1) and the top of the bolt (5) are provided with hanging holes (3), and the side wall of the fixing plate (1) away from the nut (6) is provided with limiting grooves that are compatible with the bolt (4) and the bolt (5).

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