CN221051359U - Safety lifting hook limiting device with improved performance and service life - Google Patents

Abstract

The utility model relates to the technical field of lifting appliances, and particularly discloses a safety lifting hook limiting device for improving performance and prolonging service life, which comprises a main lifting hook, wherein a rotating column is rotatably arranged on the surface of the main lifting hook, a clamping and limiting integrated mechanism is rotatably arranged on the circumferential surface of the rotating column, the clamping and limiting integrated mechanism comprises an auxiliary lifting hook, a limiting block is rotatably arranged on the surface of the auxiliary lifting hook, a through groove is formed in the limiting block in a penetrating manner, the clamping and limiting integrated mechanism further comprises a through groove, a limiting wall, a rotating groove, a prismatic rotating angle, a blocking angle and a torsion spring, the limiting wall and the rotating groove are arranged on the surface of the main lifting hook, the limiting wall is arranged above the rotating groove, the prismatic rotating angle and the blocking angle are arranged on the surface of the limiting block, the prismatic rotating angle is arranged in the rotating groove, the prismatic rotating angle and the rotating groove are rotatably arranged, and the grooves in the through groove in the limiting block are cancelled by optimizing the structure of the limiting block, so that the opening of redundant grooves is reduced, the integral strength of the limiting block is improved, meanwhile, the working procedures of processing can be reduced to a certain extent, and the cost is saved.

Description

Safety lifting hook limiting device with improved performance and service life

Technical Field

The utility model relates to the technical field of lifting appliances, in particular to a safety lifting hook limiting device for improving performance and prolonging service life.

Background

The lifting hook refers to a mechanical part of a crane and other machines for lifting articles, and generally refers to a telescopic and rotatable steel cantilever, and is generally composed of a hanging rod, a lifting hook, a balancing device and a connecting piece, wherein the main function of the lifting hook is to increase the gripping force and stability of the lifted articles so as to better control the lifting process of the articles, meanwhile, the lifting hook can play a role in balancing and stabilizing in the lifting process to prevent the articles from shaking or tilting, when the lifting claw is used, the strength and stability of the lifting claw are required to be ensured to be enough to bear the weight and external moment of the lifted articles, and the firm and stable connection between the lifting claw and the articles is required to be kept in the lifting process so as to prevent the articles from falling or shaking.

Limiting blocks in the existing lifting hooks are limited on two sides by torsion springs, so that the limiting blocks lack of unbalanced load resistance in use and are required to be lifted in stability, meanwhile, the limiting blocks of the safety lifting hooks are mechanically processed after powder metallurgy forming, machining steps are complicated, a certain number of grooves can be formed in the limiting blocks, the strength of the limiting blocks after machining is reduced, and the service life of the limiting blocks is prolonged.

Disclosure of utility model

(One) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a safety lifting hook limiting device for improving the performance and prolonging the service life, and solves the technical problems that the strength of the limiting block and the stability of a torsion spring of the conventional device are to be improved.

(II) technical scheme

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the safety lifting hook limiting device for improving the performance and prolonging the service life comprises a main lifting hook, wherein a rotating column is rotatably arranged on the surface of the main lifting hook;

The clamping and limiting integrated mechanism is rotatably arranged on the circumferential surface of the rotary column;

the clamping and limiting integrated mechanism comprises an auxiliary lifting hook;

wherein, the stopper is installed in supplementary lifting hook surface rotation.

Preferably: a through groove is formed in the limiting block in a penetrating mode;

The clamping and limiting integrated mechanism further comprises a through groove, a limiting wall, a rotary groove, a prismatic rotary angle, a blocking angle and a torsion spring.

Preferably: the limiting wall and the rotating groove are arranged on the surface of the main lifting hook;

wherein, the spacing wall is located the rotary groove top.

Preferably: the prismatic rotating angle and the baffle angle are arranged on the surface of the limiting block;

Wherein, the prismatic rotation angle is positioned in the rotation groove.

Preferably: the prismatic rotating angle is rotatably arranged with the rotating groove;

wherein, keep off the angle with spacing wall looks adaptation.

Preferably: the torsion spring is positioned in the through groove;

wherein, torsional spring and logical groove fixed mounting.

(III) beneficial effects

1. By optimizing the structure of the limiting block, the grooves in the through grooves in the limiting block are eliminated, the opening of redundant grooves is reduced, the integral strength of the limiting block is improved, meanwhile, the processing procedures can be reduced to a certain extent, and the cost is saved;

2. Through optimizing the structure of the torsion spring in the through groove in the limiting block, the torsion spring can be uniformly stressed by four legs, the cooperation between the main lifting hook and the auxiliary lifting hook is firmer, the unbalanced load resistance is improved, and in actual use, a certain supporting leg of the torsion spring is broken, so that the work between the main lifting hook and the auxiliary lifting hook can still work normally.

Drawings

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.

FIG. 1 is a plan view of the present utility model;

FIG. 2 is a plan view of a limiting block according to the present utility model;

FIG. 3 is a front view of the torsion spring of the present utility model;

Fig. 4 is a left-hand structural view of the torsion spring of the present utility model.

Legend description: 11. a main hook; 12. a rotating column; 13. an auxiliary lifting hook; 14. a limiting block; 15. a through groove; 16. a limiting wall; 17. a rotary groove; 18. prismatic rotation angle; 19. a baffle angle; 21. and (3) a torsion spring.

Detailed Description

According to the safety lifting hook limiting device capable of improving the performance and the service life, the technical problem that the strength of a limiting block and the stability of a torsion spring of the conventional device are required to be improved is effectively solved, the structure of the limiting block is optimized, the grooves in the through grooves in the limiting block are eliminated, the opening of redundant grooves is reduced, the overall strength of the limiting block is improved, meanwhile, the processing procedures are reduced to a certain extent, the cost is saved, the torsion spring can be uniformly stressed by four legs through optimizing the structure of the torsion spring in the through grooves in the limiting block, the matching between a main lifting hook and an auxiliary lifting hook is more stable, the unbalanced load resistance is improved, in addition, in the practical use, a certain supporting leg of the torsion spring is broken, and the work between the main lifting hook and the auxiliary lifting hook can still work normally.

Examples

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the technical scheme in the embodiment of the application is to effectively solve the technical problems that the strength of the limiting block and the stability of the torsion spring of the existing device are to be improved, and the overall thought is as follows:

Aiming at the problems in the prior art, the utility model provides a safety lifting hook limiting device for improving the performance and prolonging the service life, which comprises a main lifting hook 11, wherein a rotating column 12 is rotatably arranged on the surface of the main lifting hook 11;

The circumferential surface of the rotary column 12 is rotatably provided with a clamping and limiting integrated mechanism;

The clamping and limiting integrated mechanism comprises an auxiliary lifting hook 13, a limiting block 14 is installed on the surface of the auxiliary lifting hook 13 in a rotating mode, a through groove 15 is formed in the limiting block 14 in a penetrating mode, the clamping and limiting integrated mechanism further comprises the through groove 15, a limiting wall 16, a rotating groove 17, a prismatic rotating angle 18, a blocking angle 19 and a torsion spring 21, the structure of the limiting block 14 is optimized, grooves in the through groove 15 in the limiting block 14 are eliminated, the number of redundant grooves is reduced, the integral strength of the limiting block 14 is increased, machining procedures can be reduced to a certain extent, and cost is saved.

The limiting wall 16 and the rotating groove 17 are arranged on the surface of the main lifting hook 11, the limiting wall 16 is arranged above the rotating groove 17, the prismatic rotating angle 18 and the blocking angle 19 are arranged on the surface of the limiting block 14, the prismatic rotating angle 18 is arranged inside the rotating groove 17, the prismatic rotating angle 18 and the rotating groove 17 are rotatably arranged, the blocking angle 19 is matched with the limiting wall 16, the torsion spring 21 is arranged inside the through groove 15, the torsion spring 21 is fixedly arranged with the through groove 15, the structure of the torsion spring 21 in the through groove 15 in the limiting block 14 is optimized, the torsion spring 21 can uniformly bear four legs, the matching between the main lifting hook 11 and the auxiliary lifting hook 13 is firmer, the anti-unbalanced energy is increased, in the practical use, a certain supporting leg of the torsion spring 21 is broken, and the work between the main lifting hook 11 and the auxiliary lifting hook 13 can still work normally.

Working principle:

firstly, when the auxiliary lifting hook 13 rotates anticlockwise around the rotary column 12, the prismatic rotating angle 18 rotates in the rotary groove 17 at the opposite angle, the torsional spring 21 is stretched along with the rotation of the prismatic rotating angle 18, and meanwhile, the limiting block 14 integrally rotates, and the blocking angle 19 is driven to correspondingly rotate due to the rotation of the limiting block 14;

in the second step, when the stop angle 19 contacts the limiting wall 16, a limiting effect is achieved, so that the opening width between the auxiliary hook 13 and the main hook 11 is avoided, and the torsion spring 21 helps to reset the auxiliary hook 13 and the main hook 11.

Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present utility model and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (6)

1. The safety lifting hook limiting device for improving the performance and prolonging the service life comprises a main lifting hook (11), wherein a rotating column (12) is rotatably arranged on the surface of the main lifting hook (11), and the safety lifting hook limiting device is characterized in that;

The circumferential surface of the rotary column (12) is rotatably provided with a clamping and limiting integrated mechanism;

the clamping and limiting integrated mechanism comprises an auxiliary lifting hook (13);

Wherein, the surface of the auxiliary lifting hook (13) is rotatably provided with a limiting block (14).

2. Safety hook limiting device for increasing performance and life as claimed in claim 1, wherein a through slot (15) is provided inside the limiting block (14);

The clamping and limiting integrated mechanism further comprises a through groove (15), a limiting wall (16), a rotary groove (17), a prismatic rotary angle (18), a blocking angle (19) and a torsion spring (21).

3. Safety hook stop arrangement for increasing performance and life according to claim 2, characterized in that the stop wall (16) and the rotation groove (17) are provided on the surface of the main hook (11);

Wherein the limiting wall (16) is positioned above the rotating groove (17).

4. A safety hook stop arrangement for increasing performance and life as claimed in claim 3, wherein the prismatic rotation angle (18) and the stop angle (19) are provided on the surface of the stop block (14);

Wherein the prismatic rotation angle (18) is located inside the rotation groove (17).

5. A safety hook stop for increasing performance and life as claimed in claim 4, wherein said prismatic rotation angle (18) is rotatably mounted with the rotation groove (17);

wherein, the baffle angle (19) is matched with the limit wall (16).

6. Safety hook stop arrangement for increasing performance and life according to claim 5, characterized in that the torsion spring (21) is located inside the through slot (15);

Wherein the torsion spring (21) is fixedly arranged with the through groove (15).