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CN-224199005-U - Anti-drop lifting hook

CN224199005UCN 224199005 UCN224199005 UCN 224199005UCN-224199005-U

Abstract

The utility model discloses an anti-falling lifting hook which comprises a hook head, wherein the top end of the hook head is fixedly connected with a connecting block, the top surface of the connecting block is fixedly connected with a connector, one end of an opening of the hook head is rotatably connected with a protective rod, two limiting plates are fixedly connected to the side wall of one end of the connecting block, which is close to the protective rod, at intervals, two side walls of the top of the protective rod are respectively connected with the inner side walls, which are opposite to the two limiting plates, in a sliding manner, and limiting assemblies used for limiting the rotation of the protective rod are arranged on the two limiting plates. The utility model is applicable to lifting ropes with different diameters, improves the applicability of the lifting hook, and avoids the failure of the anti-falling function caused by the fact that the lifting hook cannot be closed when the lifting rope is thicker.

Inventors

  • CHEN YANQI

Assignees

  • 河北鑫兴天地索具设备有限公司

Dates

Publication Date
20260505
Application Date
20250612

Claims (7)

  1. 1. The anti-falling lifting hook is characterized by comprising a hook head (1), wherein the top end of the hook head (1) is fixedly connected with a connecting block (2), the top surface of the connecting block (2) is fixedly connected with a connecting head (3), one end of an opening of the hook head (1) is rotationally connected with a protective rod (4), two limiting plates (5) are fixedly connected to the side wall of one end of the connecting block (2) close to the protective rod (4) at intervals, two side walls of the top of the protective rod (4) are respectively connected with two opposite inner side walls of the limiting plates (5) in a sliding mode, and limiting assemblies (6) used for limiting the rotation of the protective rod (4) are arranged on the two limiting plates (5).
  2. 2. The anti-drop lifting hook of claim 1, wherein the limiting component (6) comprises two rotating rods (601), one ends of the two rotating rods (601) are respectively connected to the outer walls of the two limiting plates (5) in a rotating mode, a limiting rod (602) is arranged between the top ends of the two rotating rods (601), a sliding block (603) is fixedly connected to the top ends of the protective rods (4), two side walls of the sliding block (603) are in sliding connection with the opposite inner side walls of the two limiting plates (5), one side wall of the sliding block (603) far away from the connecting block (2) is horizontally provided with a limiting groove (604) matched with the limiting rod (602), and an elastic piece (605) is arranged on the connecting block (2) between the two limiting plates (5).
  3. 3. The anti-drop lifting hook of claim 2, wherein the elastic component comprises a sliding rod (6051), a compression spring (6052) and a baffle plate (6053), a sliding hole (6054) is formed in the inner wall of the connecting block (2), one end of the sliding rod (6051) is connected in the sliding hole (6054) in a sliding mode, the baffle plate (6053) is fixedly connected to the other end of the sliding rod (6051), the compression spring (6052) is sleeved on the sliding rod (6051), and two ends of the compression spring (6052) are fixedly connected with the connecting block (2) and the baffle plate (6053) respectively.
  4. 4. The drop-proof hook of claim 3, wherein the limiting plate (5) is of a circular structure, the cambered surface is fixedly connected with the connecting block (2), the side surface of one end of the sliding block (603) far away from the connecting block (2) is a cambered surface, and the limiting groove (604) is formed in the cambered surface of the sliding block (603).
  5. 5. The drop-proof hook of claim 4, wherein two ends of the limiting rod (602) are rotatably connected with two rotating rods (601), and the outer wall of the limiting rod (602) is in contact with the cambered surface of the limiting plate (5).
  6. 6. The drop-proof hook of claim 5, wherein a toggle rod (606) is fixedly connected between the top ends of the two rotating rods (601).
  7. 7. The drop-out preventing hook of claim 6, wherein a limiting post (607) is fixedly connected to the outer wall of the limiting plate (5), and the limiting post (607) is used for limiting the limiting rod (602).

Description

Anti-drop lifting hook Technical Field The utility model relates to the technical field of lifting hooks, in particular to an anti-falling lifting hook. Background The lifting hook is an important part for hanging and lifting heavy objects in crane machinery, is usually forged or stamped from high-strength steel, is in a hook shape, and is commonly provided with a single hook and a double hook. During operation, the lifting hook is matched with the steel wire rope, the lifting hoist and the like to transfer the pulling force to the lifting equipment, so that the lifting hook is widely applied to material handling and lifting operations in scenes such as factories, construction sites, ports and the like. The anti-drop lifting hook is a very critical safe lifting appliance in lifting operation, and on the basis of the traditional lifting hook, an anti-drop assembly is additionally arranged, so that the lifting appliance can be clamped after a heavy object is hung on the lifting hook, and accidental falling of the lifting appliance is avoided. The existing lifting hook anti-drop assembly is simple in structure, is generally composed of a piece of turnover metal sheet (lock catch) and a connecting shaft, one end of the lock catch is fixed on one side of a hook opening through a pin shaft, the lock catch is connected with a hook body through a spring, the lock catch is closed by spring force under normal state, and the lock catch is pushed open only when a lifting appliance is inserted and overcomes the spring force. For example, the patent of the utility model with the publication number CN207890903U discloses an anti-falling hook, which comprises a hook body and an anti-rotation device, wherein the anti-rotation device comprises a rotation part and a fixing part, the bottom of the rotation part is provided with a fixing groove, the cross section area of the opening of the fixing groove is smaller than the cross section area in the fixing groove, the fixing part comprises a fixing part top and a connecting part, the fixing part top is arranged in the fixing groove and can horizontally rotate in the fixing groove, the cross section area of the fixing part top is larger than the cross section area of the opening of the fixing groove and smaller than the cross section area in the fixing groove, the connecting part is connected with the top of the hook body, the anti-falling device is connected between the top of the hook body and a hook tooth, and the anti-falling device comprises a baffle plate hinged with the hook body. When the anti-drop device is in actual use, although looseness can not be generated in the hanging process, the baffle plate in the device can only rotate in the hook, the movement track is arc-shaped, and when the lifting rope is thick, the lifting rope can be intersected with the movement track of the baffle plate, so that the pressure spring can not press the baffle plate on the hook teeth, the hook can not realize closing of the hook mouth, and the anti-drop device is invalid. Therefore, there is a need to develop an anti-drop hook against the above drawbacks. Disclosure of utility model The utility model aims to provide an anti-falling lifting hook which can be suitable for lifting ropes with different diameters, improves the applicability of the lifting hook and avoids the failure of an anti-falling function caused by the fact that the lifting hook cannot be closed when the lifting rope is thicker. In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model discloses an anti-falling lifting hook which comprises a hook head, wherein the top end of the hook head is fixedly connected with a connecting block, the top surface of the connecting block is fixedly connected with a connector, one end of an opening of the hook head is rotatably connected with a protective rod, two limiting plates are fixedly connected to the side wall of the connecting block, which is close to one end of the protective rod, at intervals, two side walls of the top of the protective rod are respectively connected with inner side walls opposite to the two limiting plates in a sliding manner, and limiting assemblies used for limiting the rotation of the protective rod are arranged on the two limiting plates. Further, the limiting assembly comprises two rotating rods, one ends of the two rotating rods are respectively connected to the outer walls of the limiting plates in a rotating mode, limiting rods are arranged between the top ends of the two rotating rods, the top ends of the protecting rods are fixedly connected with sliding blocks, two side walls of the sliding blocks are in sliding connection with two opposite inner side walls of the limiting plates, a limiting groove matched with the limiting rods is horizontally formed in one side wall, away from the connecting block, of the sliding blocks, and elastic pieces are arranged on the connecting block between the