CN210735982U

CN210735982U - Lifting hook component

Info

Publication number: CN210735982U
Application number: CN201921561110.XU
Authority: CN
Inventors: 李生庆
Original assignee: Shanghai Xinqing Machinery Co ltd
Current assignee: Shanghai Xinqing Machinery Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-06-12
Anticipated expiration: 2029-09-19

Abstract

The utility model relates to a lifting hook subassembly, include: a pair of hanger plates arranged in parallel at intervals and connected by a hanger shaft; a housing, the upper end of which is rotatably connected in the pair of hanging plates through a pivot; the lifting hook comprises a hook body, a hook and a hook opening, and the top of the hook body is rotatably connected into the shell through a rotating shaft; one end of the compression spring is fixed in the shell, and the other end of the compression spring is fixed on the middle part of the hook body; the lifting hook assembly can be switched between a working state and a unhooking state, in the working state, the lifting shaft, the pivot and the rotating shaft are arranged in parallel in the same vertical plane, the compression spring is in a stretching state, and the hook opening is inclined relative to the horizontal plane to form an unhooking-preventing angle; in the unhooking state, the compression spring is in a compression state, the hook opening is in a horizontal state, and the rotating shaft deviates from the same vertical plane where the hanging shaft and the pivot are located. The utility model discloses simple structure can couple and unhook automatically, has reduced the operation difficulty, has improved production efficiency.

Description

Lifting hook component

The technical field is as follows:

the utility model relates to a hoisting machinery technical field, in particular to lifting hook subassembly.

Background art:

in the hoisting operation of the hoisting machine, the lifting hook is usually required to be unhooked manually, so that the operation difficulty and risk are increased on one hand, and the labor efficiency is greatly reduced on the other hand.

The utility model has the following contents:

to overcome the above problems, it would be advantageous to provide a hook assembly that is simple in structure and capable of automatic unhooking.

Therefore, the utility model provides a lifting hook component, it includes:

a pair of hanger plates arranged in parallel at intervals and connected together by a hanger shaft;

a housing having an upper end rotatably connected to the pair of hanger plates by a pivot;

a hook including a hook body, a hook, and a hook opening formed between the hook body and the hook, the top of the hook body being rotatably coupled in the housing by a rotation shaft;

a compression spring, one end of which is fixed in the shell and the other end of which is fixed on the middle part of the hook body;

the lifting hook assembly can be switched between a working state and a unhooking state, in the working state, the lifting shaft, the pivot shaft and the rotating shaft are arranged in parallel in the same vertical plane, the compression spring is in a stretching state, and the hook opening is inclined to a horizontal plane to form an unhooking prevention angle; in the unhooking state, the compression spring is in a compression state, the hook opening is in a horizontal state, and the rotating shaft deviates from the same vertical plane where the hanging shaft and the pivot shaft are located.

Further, in the unhooking state, the rotating shaft and the compression spring are respectively positioned on two sides of the same vertical plane.

Still further, the housing has a lower retaining portion arranged to block the hook opening in the operating state.

Still further, the housing is configured as a rectangular sleeve, the compression spring being located on one side within the housing, wherein the housing is open on a side adjacent to the compression spring, thereby enabling the compression spring to be freely switched between the extended state and the compressed state.

Further, the housing has a lower cutout at a side of the compression spring disposed opposite to the lower retaining portion, the lower cutout being disposed so that a lower edge of the housing is not lower than an upper edge of the hook opening in the unhooked state.

The unhooking prevention angle is controlled to be 45-80 degrees relative to the horizontal plane.

Compared with the prior art, the utility model has the advantages of as follows:

1) through the arrangement of the compression spring and the rotatable matching of the shell and the lifting hook, the fishhook assembly can be switched between a working state and a unhooking state, the automatic unhooking of the unhooking state is realized, manual unhooking is not needed, the production efficiency is improved, and the operation difficulty and the risk degree are reduced;

2) the lower anti-falling part of the shell is arranged, so that the lower anti-falling part can be blocked at the hook opening when the lifting hook assembly is in a working state, and the phenomenon that a heavy object hung in the hook opening of the lifting hook is separated from the hook opening is avoided.

These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.

Description of the drawings:

the structure of the present invention, together with further objects and advantages thereof, will be best understood from the following description taken in conjunction with the accompanying drawings, in which like reference characters identify like elements:

figure 1 is a front schematic view of a hook assembly according to an embodiment of the present invention, in which the hook assembly is in an operative condition;

figure 2 is another front schematic view of the hook assembly of figure 1, in which the hook assembly is in an unhooked condition;

fig. 3 is an enlarged side view of a portion of the hook assembly of fig. 1 showing the upper halves of a pair of hanger plates and a hanger shaft connecting the pair of hanger plates together.

The specific implementation mode is as follows:

the following description of the embodiments of the present invention will be made with reference to the accompanying drawings.

In this document, directional references, such as "upper", "lower", "left", "right", etc., used to explain the structure and/or actions of various portions of the disclosed embodiments, are not absolute, but relative. These representations are suitable when the various parts of the disclosed embodiments are in the positions shown in the figures. If the position or frame of reference of the disclosed embodiments changes, these representations also change according to the change of the position or frame of reference of the disclosed embodiments.

As shown in fig. 1 to 3, according to a specific embodiment of the present invention, there is provided a hook assembly comprising a pair of hanger plates, a housing 3, a hook 5, and a compression spring 7, wherein the pair of hanger plates comprises a left hanger plate 11 and a right hanger plate 13, which are arranged in parallel and spaced apart and connected together by a hanger shaft 2; the upper end of the shell 3 is rotatably connected to the left hanging plate 11 and the right hanging plate 13 through a pivot 4 and is positioned between the left hanging plate 11 and the right hanging plate 13; the hook 5 comprises a hook body 50, a hook 52 and a hook opening 54 formed between the hook body 50 and the hook 52, the top of the hook body 50 is rotatably connected in the housing 3 through a rotating shaft 6; the compression spring 7 has one end fixed in the housing 3 and the other end fixed to the intermediate portion 501 of the hook 50.

As shown in fig. 1 and 2, the hook assembly can be switched between an operating state (see fig. 1) in which the hanging shaft 2, the pivot shaft 4 and the rotating shaft 6 are arranged in parallel in the same vertical plane 100, the compression spring 7 is in a stretched state, and the hook mouth 54 is inclined to the horizontal plane at an anti-unhooking angle which can be controlled at 45 ° to 80 °, preferably 65 °, to the horizontal plane; in this unhooked state, the compression spring 7 is in a compressed state, the hook mouth 54 is in a horizontal state, and the rotating shaft 6 is offset from the same vertical plane 100 in which the hanging shaft 2 and the pivot 4 are located. Specifically, as shown in fig. 2, in the unhooking state, the rotating shaft 6 and the compression spring 7 are respectively located on two sides of the same vertical plane 100, that is, when the hook assembly is switched from the working state shown in fig. 1 to the unhooking state shown in fig. 2, the compression spring 7 is switched from the tension state to the compression state, so that the housing 3 rotates clockwise around the pivot shaft 4 by an angle in the process, the hook 5 rotates counterclockwise around the rotating shaft 6 by an angle, and the rotating shaft 6 moves away from the compression spring 7.

As shown in fig. 1, and with reference to fig. 2, the housing 3 has a lower retaining portion 31, the lower retaining portion 31 being arranged such that it blocks the hook opening 54 in the operating state. Specifically, in the present embodiment, the housing 3 is formed in a rectangular sleeve shape, the compression spring 7 is located on one side (the right side in the drawings, see fig. 1 and 2) inside the housing 3, and the housing 3 is opened on the side adjacent to the compression spring 7, i.e., the right side, in order to facilitate the compression spring 7 to be freely switched between the extended state and the compressed state. As shown in fig. 1 and 2, the rectangular sleeve-like housing 3 is cut at a corner on the lower right side (i.e., the side on which the compression spring 7 is provided) to form a lower notch 33, and the lower retaining portion 31 is a portion opposite to the lower notch 33 and remaining on the lower left side of the housing 3. In order to ensure smooth unhooking of the hoisted objects, the lower notch 33 is disposed such that the lower edge 35 of the housing 3 (i.e., the abutting edge of the lower notch 33 and the lower retaining portion 31) is not lower than the upper edge 540 of the hook notch 54 in the unhooked state (see fig. 1).

The operation of the hook assembly of the present embodiment will be described with reference to fig. 1 to 3:

installing the lifting shaft 2 of the lifting hook assembly through a lifting ring (not shown) of the crane;

a hook (not shown) on a weight to be loaded is hung on the hook 52 through a hook opening 54 of the hook assembly in the unhooking state shown in fig. 2, when the hook on the weight slides into the inner side from the outer side of the hook opening 54 and is lifted by a crane, under the action of the gravity of the weight, the hook 5 rotates clockwise around the rotating shaft 6, the shell 3 rotates anticlockwise along with the movement of the rotating shaft 6, the compression spring 7 is stretched, the compressed state shown in fig. 2 is changed into the stretched state shown in fig. 1, and finally the rotating shaft 6 returns to the position which is in the same vertical plane 100 with the hanging shaft 2 and the pivot 4 again, at this time, the lower anti-falling part 31 protects the hook opening 54, as shown in fig. 1;

when the heavy object needs to be unloaded, the crane lowers the hook assembly downwards, when the hook 5 does not bear the load any more, the hook assembly continues to be lowered, the shell 3 starts to rotate clockwise around the pivot 4 to drive the rotating shaft 6 to move leftwards, so that the hook 5 rotates anticlockwise around the rotating shaft 6, meanwhile, the compression spring 7 starts to move from a stretching state to a compression state, finally, the hook mouth 54 of the hook 5 enters a horizontal state shown in fig. 2, and at the moment, the hook on the heavy object can automatically unhook.

While the invention has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes and modifications may be made to the above-described arrangements, including combinations of features disclosed herein either individually or in any combination as is evident from the below disclosure. These variants and/or combinations fall within the technical field of the present invention and are intended to be protected by the following claims.

Claims

1. A hook assembly, comprising:

the lifting hook assembly can be switched between a working state and a unhooking state, in the working state, the lifting shaft, the pivot shaft and the rotating shaft are arranged in parallel in the same vertical plane, the compression spring is in a stretching state, and the hook opening is inclined to a horizontal plane to form an unhooking prevention angle; in the unhooking state, the compression spring is in a compressed state, the hook opening is in a horizontal state, and the rotating shaft deviates from the same vertical plane on which the hanging shaft and the pivot shaft are positioned.

2. The assembly of claim 1, wherein in the unhooked state, the shaft and the compression spring are on opposite sides of the same vertical plane.

3. A hook assembly according to claim 1 or claim 2, wherein the housing has a lower retaining portion arranged to close off the hook mouth in the operative condition.

4. The hook assembly as claimed in claim 3, wherein the housing is configured in a rectangular sleeve shape, the compression spring being located on one side within the housing, wherein the housing is open on a side adjacent the compression spring, such that the compression spring is freely transitionable between the extended state and the compressed state.

5. The assembly of claim 4, wherein the housing has a lower cutout on a side of the compression spring opposite the lower retaining portion, the lower cutout being positioned such that a lower edge of the housing is not lower than an upper edge of the hook opening in the unhooked state.

6. A hook assembly according to claim 1, wherein the unhooking prevention angle is controlled at 45 ° to 80 ° to the horizontal plane.