CN218320268U

CN218320268U - Crane anti-drop safety lifting hook

Info

Publication number: CN218320268U
Application number: CN202222798558.1U
Authority: CN
Inventors: 陈智辉
Original assignee: Foshan Yuanhengfeng Stainless Steel Product Co ltd
Current assignee: Foshan Yuanhengfeng Stainless Steel Product Co ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-01-17
Anticipated expiration: 2032-10-24

Abstract

The utility model provides a crane anti-drop safety hook, which comprises a hook body, a disc-shaped connecting flange, a connecting bracket, a torsion spring, a flat-plate-shaped sealing element and an opening prevention frame; when hoist anti-drop safety lifting hook in this application appears when the hoist cable loosens because of the descending of the load that hangs, even when the hoist cable on the lifting hook upwards rises, the hoist cable that upwards rises is owing to receive the opening to prevent keeping out of frame, when the hoist cable continues to prevent to the opening that the frame from exerting ascending effort, prevent the frame owing to receive the flange's of its top restriction, make the opening prevent that the frame can't continue the rebound, and make the opening prevent the frame downward sloping, guarantee that the sealing member is in the closed state to the lifting hook all the time, thereby restricted the hoist cable from the lifting hook roll-off.

Description

Crane anti-drop safety lifting hook

Technical Field

The utility model relates to a crane accessories technical field, concretely relates to hoist anti-drop safety lifting hook.

Background

A crane is widely used in various industries as a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range.

For example, in the production process of steel pipes, coiled billet raw materials (steel coils) need to be lifted to a workshop for longitudinal shearing to form raw materials for manufacturing the steel pipes. In the process of lifting the steel coil, a crane in a workshop is needed for carrying out the lifting. Referring to fig. 1, a schematic diagram of a hook structure of a conventional crane is shown. In order to prevent the sling 3 'from easily falling out of the hook 1', a stopper 2 'is usually provided at the hook 1'. However, in some cases, the sling 3 'may still fall off the hook 1'. When one end of the suspended load in a single suspension state falls to the ground, namely when the bottom end of a steel coil is in rigid contact with the ground, for example, the tensile force of the steel coil on the sling is reduced, the annular tail end of the sling can be lifted upwards, and meanwhile, the tip end of the lifting hook can be twisted or rotated backwards, so that the sling continues to move towards the tip end side along the lifting hook and outwards push out the stop block, and the tail end of the sling slides out of the lifting hook, and accidents are easily caused.

Disclosure of Invention

To the defect that exists among the prior art, the utility model aims to provide a hoist anti-drop safety lifting hook aims at solving the lifting hook and has the risk problem of roll-off from the lifting hook at handling goods in-process hoist cable.

In order to achieve the above object, the utility model adopts the following technical scheme:

the application provides hoist anti-drop safety lifting hook, anti-drop safety lifting hook includes the lifting hook body, anti-drop safety lifting hook still includes:

the connecting flange is horizontally adjacent to and fixedly arranged at the upper end of the neck part of the lifting hook body;

one end of the connecting support is hinged to the inner side of the neck of the hook body, the other end of the connecting support is fixedly mounted on the bottom end face of the connecting flange, and the other end of the connecting support is hinged to a rotating shaft;

the torsional springs are arranged at two ends of the rotating shaft;

the top end of the sealing element is fixedly arranged on the rotating shaft of the connecting bracket, and the bottom end of the sealing element is provided with an opening matched with the tip end of the hook body;

the opening prevents the frame, the opening prevents the frame including relative left side board and the right side board that sets up and connects the backplate of left side board and right side board one end, left side board, right side board and backplate enclose into the open structure that a cross section is the U type, the upper end suit of lifting hook body is in the open structure of opening prevents the frame, the front end of left side board and right side board respectively with the bottom both sides of sealing member are articulated continuous.

Furthermore, the connecting support is fixedly installed on the bottom end face of the connecting flange through a screw arranged on the connecting support.

Furthermore, the left side plate and the right side plate are in a triangular shape structure.

The beneficial effects of the utility model are that: when hoist anti-drop safety lifting hook in this application appears when the hoist cable loosens because of the descending of the load that hangs, even when the hoist cable on the lifting hook upwards rises, the hoist cable that upwards rises is owing to receive the opening to prevent keeping out of frame, when the hoist cable continues to prevent to the opening that the frame from exerting ascending effort, prevent the frame owing to receive the flange's of its top restriction, make the opening prevent that the frame can't continue the rebound, and make the opening prevent the frame downward sloping, guarantee that the sealing member is in the closed state to the lifting hook all the time, thereby restricted the hoist cable from the lifting hook roll-off.

Drawings

Fig. 1 is a schematic view of a conventional crane hook structure.

Fig. 2 is a schematic perspective view of an anti-drop safety hook of a crane in an embodiment of the application.

Fig. 3 is a schematic structural diagram of a main view direction of the anti-falling safety hook of the crane in the embodiment of the application.

Fig. 4 is a schematic view of the structure state of pushing the opening preventing frame in the embodiment of the present application to move backward and open.

Fig. 5 is a schematic view of the structure state of the opening prevention frame in the embodiment of the present application when the opening prevention frame is fully opened.

In the figure:

100-crane anti-falling safety hook, 200-sling, 1-hook body, 2-connecting flange, 3-connecting support, 4-sealing element, 41-U-shaped opening, 5-rotating shaft, 6-torsion spring, 7-opening prevention frame, 71-left side plate, 72-back plate and 8-screw.

Detailed Description

The present invention will be described in further detail with reference to the drawings and the following detailed description.

Referring to fig. 2 to 3, the present embodiment provides a crane drop-off prevention safety hook 100 including a hook body 1, a disk-shaped coupling flange 2, a coupling bracket 3, a torsion spring 6, a flat plate-shaped sealing member 4, and an opening prevention frame 7.

In the present embodiment, the connecting flange 2 is installed at the top end of the neck portion of the hook body 1 adjacent to the horizontal direction, one end of the connecting bracket 3 is hinged at the neck portion of the hook body 1, and the other end thereof is horizontally and fixedly installed at the bottom end face of the connecting flange 2. In some embodiments, the other end of the connecting bracket 3 is horizontally and fixedly mounted on the bottom end surface of the connecting flange 2 by means of screws 8.

Continuing to refer to fig. 2 and 3, a rotating shaft 5 is hinged at the other end of the connecting bracket 3, and the rotating shaft 5 is rotatably connected with the other end of the connecting bracket 3. In order to ensure that the rotating shaft 5 can automatically reset after rotating, torsion springs 6 are respectively installed at two ends of the rotating shaft 5.

Referring to fig. 2, the sealing member 4 in this embodiment has a flat plate-like outer shape, and the tip end of the sealing member 4 is fixedly mounted on the rotating shaft 5 to rotate together with the rotating shaft 5. The middle part of the bottom end of the sealing member 4 is formed with an opening structure of a U-shaped opening 41, and the U-shaped opening 41 is matched with the tip end of the hook body 1. The sealing element 4 is arranged on the tip of the hook body 1 and the bracket at the bottom end face of the connecting flange 2 above the hook body 1 and is used for forming a closed area for the tip area of the hook body 1 and preventing the sling 200 on the sealing element from sliding out of the tip of the hook body 1.

With continued reference to fig. 2, the opening prevention frame 7 in this embodiment includes a left side plate 71 and a right side plate which are oppositely disposed, and a back plate 72 connected to one end of the left side plate 71 and one end of the right side plate, and the left side plate 71, the right side plate, and the back plate 72 define an opening structure having a U-shaped cross section. The upper end suit of lifting hook body 1 prevents in the open structure of frame 7, and the front end of left side board 71 and right side board links to each other with the bottom both sides of sealing member 4 are articulated respectively.

Referring to fig. 3, in some embodiments, the left side plate 71 and the right side plate are triangular in shape, and triangular shape is adopted, so that when the sling 200 on the hook body 1 is lifted upwards, the upward moving sling 200 applies upward acting force to the left side plate 71 and the right side plate, the left side plate 71 and the right side plate are limited by the bottom end face of the connecting flange 2 in the upward moving process, the rear ends of the left side plate 71 and the right side plate are in contact with the bottom end face of the connecting flange 2, the front ends of the left side plate 71 and the right side plate are obliquely arranged at the tip of the hook body 1, so that the sling 200 cannot be lifted upwards continuously, and a stop for the sling 200 to slide out of the hook body 1 is formed.

The operation of the crane drop-preventing safety hook 100 in this embodiment will be described with reference to fig. 4 and 5:

when the sling 200 needs to be placed into the hook body 1 or the sling 200 is taken out of the hook body 1, the sealing plate is pushed upwards in a manual inclined mode, so that the sealing plate is close to the bottom end face of the connecting flange 2, and in the process that the sealing plate is turned upwards, the opening prevents the frame 7 from sliding downwards along the hook body 1. After the sealing plate is completely attached to the bottom end surface of the connecting flange 2 (see fig. 5), i.e., after being completely opened, the slings 200 can be easily put into or taken out of the hook body 1.

Referring to fig. 3, in the using process, when the sling 200 is loosened due to the falling of the suspended load, even if the sling 200 on the hook rises upwards, the sling 200 rising upwards is resisted by the opening prevention frame 7, and when the sling 200 continues to apply an upward acting force to the opening prevention frame 7, the opening prevention frame 7 cannot move upwards continuously due to the limitation of the connecting flange 2 above the opening prevention frame, so that the opening prevention frame 7 inclines downwards, the sealing element 4 is ensured to be always in a closed state to the hook, and the sling 200 is limited from sliding out of the hook.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a hoist anti-drop safety lifting hook, anti-drop safety lifting hook includes the lifting hook body, its characterized in that, anti-drop safety lifting hook still includes:

the connecting flange is horizontally and fixedly arranged at the upper end of the neck part of the lifting hook body in an adjacent manner;

one end of the connecting support is hinged to the inner side of the neck of the lifting hook body, the other end of the connecting support is fixedly mounted on the bottom end face of the connecting flange, and a rotating shaft is hinged to the other end of the connecting support;

the torsional springs are arranged at two ends of the rotating shaft;

2. The crane anti-drop safety hook as claimed in claim 1, wherein the connecting bracket is fixedly mounted on the bottom end face of the connecting flange through a screw.

3. A crane drop-preventing safety hook as claimed in claim 1 or 2, wherein the left and right side plates are triangular in shape.