CN210260861U

CN210260861U - Hook anti-unhooking device

Info

Publication number: CN210260861U
Application number: CN201921080777.8U
Authority: CN
Inventors: 朱胜凡
Original assignee: Henan Yuzhong Lift Group Co ltd
Current assignee: Henan Yuzhong Lift Group Co ltd
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-04-07
Anticipated expiration: 2029-07-11

Abstract

The utility model provides a hook anti-unhooking device, which comprises a hook and a pawl ratchet wheel locking device; the pawl and ratchet wheel locking device comprises a pawl positioning hoop and a ratchet wheel positioning hoop which are sleeved on the neck part of the lifting hook; a pawl and a ratchet wheel are respectively and rotatably arranged on the pawl positioning hoop and the ratchet wheel positioning hoop; an arc-shaped stop rod is fixedly arranged on the pawl, the pawl comprises a pawl outer convex arc surface and a pawl inner concave arc surface, a contact pawl is formed between the pawl outer convex arc surface and the pawl inner concave arc surface, and the bending direction of the pawl outer convex arc surface is opposite to that of the lifting hook; a plurality of oblique ratchet teeth are uniformly distributed on the ratchet wheel, and the oblique direction of the oblique ratchet teeth is the same as the bending direction of the lifting hook. The device can stabilize butt with arc shelves pole at the tip of lifting hook, can reduce the condition that the wire rope in the lifting hook takes place the lifting hook by a wide margin, and simultaneously, great resistance need not overcome to pawl ratchet locking means when rotating, the simple operation.

Description

Hook anti-unhooking device

Technical Field

The utility model relates to a hoist field, specific theory has related to a lifting hook mousing-hook device.

Background

The bridge crane is applied in a large quantity in a plurality of production or construction processes, and the working capacity is large. In the overhead traveling crane lifting process, even if the existing hook head anti-disengaging device is installed, the overhead traveling crane is easy to damage, so that safety accidents are caused, sometimes even the overhead traveling crane hook head is disengaged, the damage and deformation are serious, the replacement cost time is long, the workload of workers is increased, great potential safety hazards are brought to production, and the production is influenced to be carried out smoothly and safely.

Meanwhile, when the existing crane is used for lifting appliances, the existing crane mainly adopts manual assistance to hang the pulling plate in the anti-unhooking device off the lifting hook by using tools such as a shifting lever and the like, and then the wax plate is manually shifted away from the lifting hook by using the shifting lever after the operation is finished, so that the operation is complex.

In order to solve the above problems, people are always seeking an ideal technical solution.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the not enough of prior art to a lifting hook mousing-hook device is provided.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a lifting hook anti-unhooking device comprises a lifting hook and a pawl and ratchet wheel locking device arranged at the neck part of the lifting hook;

the pawl and ratchet wheel locking device comprises a pawl positioning hoop and a ratchet wheel positioning hoop which are sleeved on the neck part of the lifting hook; a pawl and a ratchet wheel are respectively and rotatably arranged on the pawl positioning hoop and the ratchet wheel positioning hoop;

an arc-shaped blocking rod is fixedly arranged on the pawl, and one end of the arc-shaped blocking rod can be abutted against the inner side of the lifting hook;

the pawl comprises a pawl outer convex cambered surface and a pawl inner concave cambered surface, a contact pawl is formed between the pawl outer convex cambered surface and the pawl inner concave cambered surface, and the bending direction of the pawl outer convex cambered surface is opposite to that of the lifting hook;

and a plurality of oblique ratchet teeth capable of blocking the pawl from rotating are uniformly distributed on the ratchet wheel, and the oblique direction of the oblique ratchet teeth is the same as the bending direction of the lifting hook.

Based on the above, the hook unhooking prevention device comprises two groups of pawl and ratchet wheel locking devices, and the two groups of pawl and ratchet wheel locking devices are symmetrically arranged on two sides of the hook.

The utility model discloses relative prior art has substantive characteristics and progress, specific theory, the utility model provides a lifting hook mousing-hook device can utilize the rotation locking cooperation between pawl and the ratchet to drive the tip of stable butt of arc shelves pole at the lifting hook through set up pawl ratchet locking means at the lifting hook neck, can reduce the condition that wire rope in the lifting hook takes place the lifting hook by a wide margin, simultaneously, pawl ratchet locking means need not overcome great resistance, simple operation when rotating.

Drawings

Fig. 1 is a schematic view of the overall structure of the hook anti-unhooking device provided by the present invention.

Fig. 2 is a schematic side structure view of the hook anti-unhooking device provided by the present invention.

Fig. 3 is a schematic structural view of the locking device of the hook anti-unhooking device provided by the utility model.

Fig. 4 is a schematic view of the structure of the pawl of the hook anti-unhooking device provided by the present invention.

Fig. 5 is a schematic view of the working state of the hook anti-unhooking device provided by the present invention.

In the figure: 1. a hook; 2. a ratchet wheel positioning hoop; 3. a pawl positioning collar; 4. a pawl; 41. a pawl convex cambered surface; 42. the pawl is concave to the cambered surface; 43. a contact claw; 5. a ratchet wheel; 6. an arc-shaped stop lever; 7. the ratchet teeth are inclined.

Detailed Description

The technical solution of the present invention will be described in further detail through the following embodiments.

Example 1

The embodiment provides a hook unhooking prevention device, which comprises a hook 1 and a pawl and ratchet locking device arranged at the neck part of the hook 1, as shown in fig. 1, 2, 3, 4 and 5.

The pawl and ratchet wheel locking device comprises a pawl positioning hoop 3 and a ratchet wheel positioning hoop 2 which are sleeved on the neck part of the lifting hook 1; the pawl positioning hoop 3 and the ratchet positioning hoop 2 are respectively and rotatably provided with a pawl 4 and a ratchet 5.

An arc-shaped blocking rod 6 is fixedly arranged on the pawl 4, and one end of the arc-shaped blocking rod 6 can be abutted against the inner side of the lifting hook 1.

The pawl 4 comprises a pawl convex cambered surface 41 and a pawl concave cambered surface 42, a contact claw 43 is formed between the pawl convex cambered surface 41 and the pawl concave cambered surface 42, and the bending direction of the pawl convex cambered surface 41 is opposite to that of the hook 1.

A plurality of oblique ratchet teeth 7 capable of blocking the pawls 4 from rotating are uniformly distributed on the ratchet wheel 5, and the oblique direction of the oblique ratchet teeth 7 is the same as the bending direction of the lifting hook 1.

The lifting hook anti-unhooking device provided in the embodiment comprises two groups of pawl and ratchet wheel locking devices, wherein the two groups of pawl and ratchet wheel locking devices are symmetrically arranged on two sides of the lifting hook 1.

Specifically, the working process of the hook unhooking prevention device provided by the embodiment is as follows:

firstly, manually pushing one end of the arc-shaped blocking rod 6 inwards to separate the end from the inner side of the lifting hook 1, wherein the arc-shaped blocking rod 6 drives the pawl 4 to rotate in the process, so that the inclined ratchet teeth 7 and the pawl 4 which are originally clamped and connected change the clamping position; then, a hoisting rope is hung in the lifting hook manually, the pawl 4 is lifted upwards finally, the inclined ratchet teeth 7 are rotated, one end of the arc-shaped blocking rod 6 is abutted against the inner side of the lifting hook 1, the pawl 4 is put down, and the arc-shaped blocking rod 6 is clamped by utilizing the matching between the inclined ratchet teeth 7 and the pawl 4, so that the unhooking phenomenon of the lifting hook is avoided.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. The utility model provides a lifting hook mousing-hook device which characterized in that: the lifting hook comprises a lifting hook and a pawl and ratchet wheel locking device arranged at the neck part of the lifting hook;

2. A hook drop prevention device as claimed in claim 1, comprising two sets of said pawl and ratchet locks symmetrically disposed on either side of said hook.