Anti-falling lifting hook for crane
By installing a ratchet set on the outside of the crane's guard plate and a wire rope surrounding it, the problem of insufficient durability and safety of the existing hook in dangerous situations is solved, and the effect of effectively preventing the hook from falling is achieved, improving the Security.
Patent Information
- Application Number
- CN202323650215.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-30
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2033-12-30
AI Technical Summary
The use of existing crane hooks in workplaces with high risk factors is insufficient, which can easily lead to the steel cable falling off, causing accidents and economic losses.
An anti-fall hook for cranes is designed. A ratchet set is installed on the outside of the guard plate. The ratchet and the pulley are coaxially fixed. The pulley is fixed and surrounded by a steel wire rope. One end of the steel wire rope is fixed on the hook and the other end passes through it. Through the hole, the ratchet group and the wire rope are used to respond promptly and prevent the hook from falling or falling off.
It effectively prevents the hook from falling or falling off, reduces the occurrence of dangerous incidents, reduces the risk factor caused by the hook falling off, and improves production safety.
Smart Images
Figure CN222361811U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lifting hooks, in particular to a fall-prevention hook for a crane. Background Art
[0002] The hook is a kind of lifting device commonly used in lifting machinery. The hook is often suspended on the wire rope of the lifting mechanism with the help of parts such as pulleys. The hook should have sufficient strength and rigidity. Therefore, there are strict requirements on the material and processing of the hook. Cast hooks are not allowed to be used, and materials with low impact toughness are not allowed to be used. Since the hook is often used in working environments with a high risk factor, its durability, safety and service life are very important in such high-risk environments. If the steel cable falls off the hook, it is easy to cause an accident, resulting in certain economic losses and even casualties.
[0003] Therefore, it is necessary to propose a technology to improve the above defects. Utility Model Content
[0004] In view of the above-mentioned deficiencies and defects of the lifting devices in the prior art, in order to achieve the above-mentioned purpose, the utility model provides a fall-proof hook for a crane, comprising:
[0005] Outer guard plates are arranged in pairs, pulleys are arranged between the outer guard plates, a limiting nut is arranged below the pulley, a through hole is arranged in the middle of the limiting nut, a ratchet group is arranged on the outside of the outer guard plates, and the ratchet group is fixedly connected to the rotating shaft of the pulley.
[0006] As a preferred technical solution, an anti-slip block is provided below the bottom of the limit nut, and both ends of the anti-slip block are fixed inside the outer guard plate and connected to the outer guard plate by bolts.
[0007] As a preferred technical solution, it also includes a hook, a thread is arranged on the top of the hook, and the hook passes through the anti-slip block and is used in conjunction with the limiting thread.
[0008] As a preferred technical solution, a steel wire rope is also arranged on the pulley, one end of the steel wire rope is fixed and wound on the pulley, and the other end of the steel wire rope passes through the through hole and is fixed on the hook.
[0009] As a preferred technical solution, the ratchet assembly includes a ratchet and a pawl, the ratchet is fixedly connected to the rotating shaft of the pulley, and the pawl is arranged above the ratchet and is rotationally connected to the outer side of the outer guard plate.
[0010] As a preferred technical solution, the adjacent outer guard plates arranged in pairs are fixed with double-headed screws, and nuts are installed on the outer sides of the outer guard plates.
[0011] As a preferred technical solution, a rotating baffle is further provided on the hook, one end of the rotating baffle is fixed on the hook, and the other end is in contact with the tail of the hook.
[0012] As a preferred technical solution, a protection box is also included, which is arranged on the outside of the outer guard plate and has a size that satisfies the working range of the ratchet group.
[0013] As described above, the anti-fall hook for crane provided by the utility model has the following beneficial effects:
[0014] The utility model installs a ratchet group on the outer side of the guard plate, the ratchet of the ratchet group is fixedly connected to the rotating shaft of the pulley, one end of the wire rope is fixedly and surrounded on the pulley, and the other end passes through the through hole to be connected with the hook. The utility model can effectively respond to the falling or falling off of the hook in a timely manner and effectively prevent the falling or falling off of the hook. In addition, because the through hole is arranged between the limit nut and the top of the hook, the wire rope passes through the through hole twice, which is conducive to reducing the record of the hook falling and increasing the safety factor. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The display is a schematic diagram of the structure of the utility model;
[0016] Figure 2 Shown is a schematic diagram of the front structure of the utility model.
[0017] 1. Outer guard plate; 2. Pulley; 3. Steel wire rope; 4. Ratchet assembly; 401. Ratchet; 402. Paw; 5. Limit nut; 501. Through hole; 6. Anti-slip block; 7. Hook; 701. Rotating baffle; 8. Double-head screw; 9. Protective box. DETAILED DESCRIPTION
[0018] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.
[0019] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Although the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation, the form, quantity, positional relationship and proportion of each component in actual implementation can be changed at will under the premise of realizing the technical solution of this party, and the component layout form may also be more complicated. Example
[0020] This embodiment provides a hook for preventing a crane from falling. Figure 1 and attached Figure 2 The device includes an outer guard plate 1, a pulley 2 and a ratchet group 4. The outer guard plates 1 are arranged in pairs. A double-headed screw 8 is arranged between the outer guard plates 1 arranged in pairs for fixing adjacent outer guard plates 1. A pulley 2 is arranged between the outer guard plates 1 arranged in pairs. A limiting nut 5 is arranged below the pulley 2. A through hole 501 is arranged inside the limiting nut 5. An anti-slip block 6 is arranged at the bottom below the limiting nut 5. Both sides of the anti-slip block 6 are fixed to the inner side of the adjacent outer guard plate 1. Preferably, in this embodiment, the anti-slip block 6 is fixedly connected to the outer guard plate 1 by bolts; a hook 7 is arranged at the bottom of the anti-slip block 6, and a thread is arranged above the hook 7. The hook passes through the anti-slip block 6 and is rotatably connected to the limiting nut 5.
[0021] Still refer to the attached Figure 1 and attached Figure 2 A steel wire rope 3 is also arranged on the outer side of the pulley 2, one end of the steel wire rope 3 is fixed and wrapped around the pulley 2, and the other end passes through the through hole 501 and is fixed on the hook 7. A rotating baffle 701 is also arranged in the middle of the hook 7. The rotating baffle 701 is used to prevent the goods from falling off. One end of the rotating baffle 701 is fixed in the middle of the hook 7, and the other end contacts the tail of the hook 7.
[0022] Still refer to the attached Figure 1 and attached Figure 2 A ratchet assembly 4 is installed on one side of the outer guard plate 1. The ratchet assembly 4 includes a ratchet 401 and a pawl 402. The ratchet 401 is fixedly connected to the rotating shaft of the pulley 2. Preferably, in this embodiment, the ratchet 401 and the rotating shaft of the pulley 2 are connected by a key; the pawl 402 is arranged above the ratchet 401 and fixed to the outer side of the outer guard plate 1. In addition, a protection box 9 is also arranged on the outer side of the ratchet assembly 1 to protect the ratchet assembly 4.
[0023] Still refer to the attached Figure 1 and attached Figure 2 When the device is in use, if the hook 7 falls off or drops, since one end of the wire rope 3 is fixed on the hook 7, the hook 7 drops sharply, driving the wire rope 3 to move. The wire rope 3 is then wound around the pulley 2, and the pulley 2 rotates accordingly. Since the ratchet 401 is coaxial with the pulley 2, the ratchet 401 rotates at this time, and the pawl 402 blocks the ratchet 401 from rotating, thereby preventing the hook 7 from falling.
[0024] To sum up, the utility model arranges a ratchet group on the outside of the pulley, the ratchet is coaxially fixedly connected to the pulley, a steel wire rope is fixed on and wrapped around the pulley, and the other end of the steel wire rope is fixed on the hook. This actively responds to the falling of the hook, and the ratchet group reacts in time to effectively prevent the hook from falling off, thereby reducing the occurrence of dangerous events, reducing the risk factor caused by the hook falling off, and improving production safety.
[0025] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.
Claims
1. A fall-proof hook for a crane, comprising an outer guard plate, characterized in that: The outer guard plates are arranged in pairs, a pulley is arranged between the outer guard plates, a limiting nut is arranged below the pulley, a through hole is arranged in the middle of the limiting nut, a ratchet group is arranged on the outside of the outer guard plate, and the ratchet group is fixedly connected to the rotating shaft of the pulley.
2. The anti-fall hook for crane according to claim 1, characterized in that: An anti-slip block is arranged below the bottom of the limiting nut, and both ends of the anti-slip block are fixed inside the outer guard plate and connected to the outer guard plate through bolt connection.
3. The anti-fall hook for crane according to claim 2, characterized in that: It also includes a hook, a thread is arranged on the top of the hook, and the hook passes through the anti-slip block and is used in conjunction with the limiting nut.
4. The anti-fall hook for crane according to claim 1 or 3, characterized in that: A steel wire rope is also arranged on the pulley, one end of the steel wire rope is fixed and wound on the pulley, and the other end of the steel wire rope passes through the through hole and is fixed on the hook.
5. The anti-fall hook for crane according to claim 1, characterized in that: The ratchet assembly comprises a ratchet and a pawl, wherein the ratchet is fixedly connected to the rotating shaft of the pulley, and the pawl is arranged above the ratchet and is rotationally connected to the outer side of the outer guard plate.
6. The anti-fall hook for crane according to claim 1, characterized in that: The adjacent outer guard plates arranged in pairs are fixed by double-headed screws, and nuts are installed on the outer sides of the outer guard plates.
7. The anti-fall hook for crane according to claim 1, characterized in that: The hook is also provided with a rotating baffle, one end of which is fixed on the hook, and the other end of which is in contact with the tail of the hook.
8. The anti-fall hook for crane according to claim 1, characterized in that: A protection box is also included. The protection box is arranged on the outside of the outer guard plate and has a size that satisfies the working range of the ratchet group.