CN219296964U

CN219296964U - Unhooking prevention device

Info

Publication number: CN219296964U
Application number: CN202223269011.9U
Authority: CN
Inventors: 高胜全; 孙顺义; 杨振旺; 张作品; 郭起龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-07-04
Anticipated expiration: 2032-12-06

Abstract

The utility model provides an anti-unhooking device, which relates to the technical field of crown block accessories and comprises a crown block, wherein the inner side of the crown block is provided with a first sleeve, one end of a mounting rod is fixed with a second sleeve, and the other end of the mounting rod is fixed with a first sleeve; the steel wire rope or the lifting belt is extruded by the steel wire rope or the lifting belt, the locking rod moves upwards in the first sleeve and the second sleeve, the steel wire rope or the lifting belt automatically falls down in the first sleeve and the second sleeve under the action of gravity after being in place, and then the lifting belt contacts with the lifting hook, so that the unhooking prevention effect is achieved.

Description

Unhooking prevention device

Technical Field

The utility model relates to the technical field of crown block accessories, in particular to an anti-unhooking device.

Background

The hook head anti-drop device is an important protection measure for preventing accidents caused by that materials are dropped off a hook in the using process of the crown block.

The unhooking prevention structure is mainly a spring tongue structure (when the wire rope or the hoisting belt is in an upper operation, the spring tongue is required to be pressed inwards to be opened, after the wire rope or the hoisting belt is properly positioned, the silver spring tongue is restored to the current position under the action of the spring, so that the effect of preventing the wire rope and the hoisting belt from falling down is achieved);

however, the following disadvantages exist in the prior art:

(1) The elastic spring tongue cannot effectively avoid the acting force of the steel wire rope or the hoisting belt in the installation process of the steel wire rope or the hoisting belt, is easy to generate extrusion deformation, and loses the unhooking prevention effect after deformation and damage;

(2) The structural spring design of the spring tongue is generally large in spring pressure, otherwise, the spring cannot reliably rebound, so that the operation is extremely laborious in the process of installing the steel wire rope and the lifting belt, and the condition of hurting hands easily occurs.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides an anti-unhooking device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the unhooking prevention device comprises a top hook, wherein an installation rod is installed on the inner side of the top hook, one end of the installation rod is fixed with a first sleeve, and the other end of the installation rod is fixed with a second sleeve;

the operating rod is fixedly arranged on the side surface of the mounting rod;

the locking rod is movably arranged in the first sleeve and the second sleeve;

the top end of the locking rod is respectively fixed with a first limiting block and a second limiting block.

As a preferred embodiment, the length of the actuating lever is greater than the length of the locking lever.

As a preferred embodiment, the operating lever and the locking lever are both U-shaped.

Compared with the prior art, the utility model has the advantages and positive effects that,

when the steel wire rope or the lifting belt is placed in the crown block hook, firstly, the locking rod moves upwards in the first sleeve and the second sleeve under the extrusion of the steel wire rope or the lifting belt, after the steel wire rope or the lifting belt is in place, the locking rod automatically falls down in the first sleeve and the second sleeve under the action of gravity and then contacts the crown block hook, so that the effect of preventing unhooking is achieved.

Drawings

Fig. 1 is a schematic structural view of an anti-unhooking device provided by the utility model;

FIG. 2 is a schematic view of a mounting rod of an anti-unhooking device according to the present utility model;

FIG. 3 is a schematic view of a locking bar of an anti-unhooking device according to the present utility model;

fig. 4 is an installation schematic diagram of an anti-unhooking device provided by the utility model.

Legend description:

100. a mounting rod; 110. a first sleeve; 120. a second sleeve;

200. an operation lever;

300. a locking lever; 310. a first limiting block; 320. a second limiting block;

400. the car hook.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1 to 4, the present utility model provides a technical solution: the unhooking prevention device comprises a mounting rod 100, a locking rod 300 with a U-shaped structure and a crown block 400, wherein the mounting rod 100 is a round iron rod, a first sleeve 110 and a second sleeve 120 are respectively welded at two ends of the mounting rod 100, an operating rod 200 with a U-shaped structure is welded at the outer side of the mounting rod 100, the locking rod 300 is movably inserted into the first sleeve 110 and the second sleeve 120, a first limiting block 310 and a second limiting block 320 for preventing the locking rod 300 from falling off are respectively welded at the top end of the locking rod 300, the mounting rod 100, the first sleeve 110, the second sleeve 120 and the operating rod 200 are made of iron, the length of the operating rod 200 is larger than that of the locking rod 300, the operation is convenient, in particular, the first sleeve 110 and the second sleeve 120 are respectively welded at two ends of the mounting rod 100 during manufacturing, then inserting the locking rod 300 into the first sleeve 110 and the second sleeve 120, respectively welding the first limiting block 310 and the second limiting block 320 at the top end of the locking rod 300, preventing the situation that the locking rod 300 falls off when in use, thereby preventing the steel wire rope and the lifting belt from falling off, installing the installation rod 100 on the inner side of the crown hook 400 after the installation is finished, firstly, under the extrusion of the steel wire rope or the lifting belt when the steel wire rope or the lifting belt is placed in the crown hook 400, the locking rod 300 moves upwards in the first sleeve 110 and the second sleeve 120, after the steel wire rope or the lifting belt is in place, the locking rod 300 automatically falls down in the first sleeve 110 and the second sleeve 120 under the action of gravity, then contacts the crown hook 400, preventing the unhooking, effectively prolonging the service life of the unhooking prevention device through the technical scheme, the safety device has important significance for the overall safety of equipment, and avoids the impact of collision, extrusion and the like on the unhooking prevention device caused by the steel wire rope and the lifting belt in the process of installing the lifting hook.

Working principle:

as shown in fig. 1-4: when the crane hook 400 is used, when the steel wire rope or the hoisting belt is placed in the crane hook 400, firstly, the locking rod 300 moves upwards in the first sleeve 110 and the second sleeve 120 under the extrusion of the steel wire rope or the hoisting belt, after the steel wire rope or the hoisting belt is in place, the locking rod 300 automatically falls down in the first sleeve 110 and the second sleeve 120 under the action of gravity, and then contacts with the crane hook 400, so that the effect of preventing unhooking is achieved.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. An unhooking prevention device, comprising:

the overhead hook comprises an overhead hook body (400), wherein an installation rod (100) is installed on the inner side of the overhead hook body (400), a first sleeve (110) is fixed at one end of the installation rod (100), and a second sleeve (120) is fixed at the other end of the installation rod (100);

an operation lever (200), the operation lever (200) being fixedly installed at a side of the installation lever (100);

a locking lever (300), the locking lever (300) being movably mounted inside the first sleeve (110) and the second sleeve (120);

the top end of the locking rod (300) is respectively fixed with a first limiting block (310) and a second limiting block (320).

2. The apparatus according to claim 1, wherein:

the length of the operating lever (200) is greater than the length of the locking lever (300).

3. The apparatus according to claim 2, wherein:

the operation rod (200) and the locking rod (300) are both U-shaped structures.