CN216235737U

CN216235737U - Straight arm lorry-mounted crane hook tightening and impact-proof device

Info

Publication number: CN216235737U
Application number: CN202122979893.7U
Authority: CN
Inventors: 吴文通; 苏松松; 陈天阳; 刘明; 翟富刚; 张燕军
Original assignee: Jiangsu Hongchang Tianma Logistics Equipment Co ltd
Current assignee: Jiangsu Hongchang Tianma Logistics Equipment Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-04-08
Anticipated expiration: 2031-11-30

Abstract

The straight arm lorry-mounted crane hook tightens up the anti-impact device. The straight-arm lorry-mounted crane lifting hook tightening anti-impact device is compact in structure, low in manufacturing cost, simple and convenient to install, capable of reducing impact on a lifting arm structural member when the lifting hook is tightened up, and capable of prolonging the service life of the lifting arm. The device comprises an upper end block with an opening at the top, a spring and a lower end block; the lower end block is provided with an accommodating cavity matched with the upper end block, and the bottom of the accommodating cavity is provided with a lower through hole matched with the steel wire rope and movably connected with the steel wire rope; the upper end block is arranged in the containing cavity and extends out of the containing cavity of the lower end block through a spring sleeved at the bottom of the upper end block; and the middle part of the upper end block is provided with an upper through hole which is coaxial with the lower through hole and is matched with the steel wire rope. The utility model has the characteristics of compact structure, low manufacturing cost, simple and convenient installation, reduction of impact on a suspension arm structural member when the lifting hook is tightened, improvement of the service life of the suspension arm and the like.

Description

Straight arm lorry-mounted crane hook tightening and impact-proof device

Technical Field

The utility model relates to a lorry-mounted crane, in particular to a hook tightening and impact preventing device of a straight-arm lorry-mounted crane.

Background

The auxiliary lifting hook of the lorry-mounted crane in the current market has the following two problems when in use:

1. the driver misoperation causes the secondary lifting hook to be recovered to be over-head, so that the phenomenon that the secondary lifting hook hits a secondary lifting arm head support is caused, the secondary lifting support is damaged, and great maintenance cost and certain potential safety hazards are brought;

2. the hoisting steel wire rope is in a loose state, and the risk that the steel wire rope slips off the arm body can not be caused when the vehicle runs and turns.

In order to solve the above problems, in the prior art, for example, a utility model patent "a crane hook anti-collision alarm device" issued on 5/12/2020, patent number "2019215403573" is disclosed. The utility model discloses a following technical characteristic, including rope and horizontal fixed mounting in the mounting panel of hoist main part, the go-between of the tip fixed connection of rope, and the bottom fixed mounting of go-between has the couple board, the touching alarm mechanism is installed with relative one side of couple board to the mounting panel, and touches alarm mechanism and include two fixed mounting in the gag lever post of mounting panel bottom both sides, two gag lever post sliding connection has same roof, and top one side fixed mounting of roof has rubber touch panel. The following problems are actually produced, installed and used:

1. the structure is complex, the bracket needs to be welded and installed, the hook structure needs to be changed, the cost is high, and the assembly is not easy;

2. the anti-impact buffering mainly depends on the rubber touch plate and the anti-impact air ring, and the counter force of the spring is used for buffering, and although the spring is arranged in the original structure, the spring is not protected;

3. due to the influence of the structure of the crane, the anti-impact function only plays a role when the lifting hook vertically moves, but the structure is not applicable to the arm support with a variable elevation angle, so the crane cannot be applied to machinery such as a lorry-mounted crane and an automobile crane which have requirements on the elevation angle of the arm support.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model provides the straight-arm lorry-mounted crane lifting hook tightening impact prevention device which has the advantages of compact structure, low manufacturing cost and simple and convenient installation, reduces the impact on a lifting arm structural member when the lifting hook is tightened, and prolongs the service life of the lifting arm.

The technical scheme of the utility model is as follows: the straight arm lorry-mounted crane hook tightening and impact-resisting device comprises an upper end block with an opening at the top, a spring and a lower end block;

the lower end block is provided with an accommodating cavity matched with the upper end block, and the bottom of the accommodating cavity is provided with a lower through hole matched with the steel wire rope and movably connected with the steel wire rope;

the upper end block is arranged in the containing cavity and extends out of the containing cavity of the lower end block through a spring sleeved at the bottom of the upper end block;

and the middle part of the upper end block is provided with an upper through hole which is coaxial with the lower through hole and is matched with the steel wire rope.

The tail end of the steel wire rope is connected with the auxiliary lifting hook through the wedge sleeve.

The wedge sleeve is hinged with the auxiliary lifting hook through a pin shaft.

The upper end block comprises a collision plate and a sleeve pipe which are fixedly connected in sequence;

the spring is sleeved on the sleeve pipe;

the height of the compressed spring is smaller than that of the sleeve pipe.

The end part of the sleeve pipe, which faces the cavity bottom of the accommodating cavity, is provided with an elastic layer.

The head end of the steel wire rope extends to the winch through a pulley movably connected with the auxiliary hoisting support.

The utility model comprises an upper end block with an opening at the top, a spring and a lower end block; when the auxiliary lifting hook retracts, the lower end block, the spring and the upper end block are driven to move upwards together, and when the upper end block contacts the auxiliary lifting support, the upper end block is restrained, so that when the auxiliary lifting hook continues to retract, the spring is compressed, the spring downwards forms a counter force, and the impact of the lifting hook on the auxiliary lifting support is relieved; the hook tightens when the lower end face of the upper end block contacts the end face of the lower end block recess. The utility model has the characteristics of compact structure, low manufacturing cost, simple and convenient installation, reduction of impact on a suspension arm structural member when the lifting hook is tightened, improvement of the service life of the suspension arm and the like.

Drawings

Figure 1 is a schematic structural view of a use state of the present invention,

figure 2 is a top view of figure 1,

FIG. 3 is a schematic structural view of a hook tightening impact prevention device in a half-section use state,

figure 4 is a schematic view of a half-section structure of a spring in a compression state,

FIG. 5 is a schematic view of a half-section of a normal state of a spring;

in the figure, 1 is a steel wire rope, 2 is a pulley, 3 is an auxiliary hoisting support, 4 is an upper end block, 5 is a spring, 6 is a lower end block, 7 is a wedge sleeve, 8 is a pin shaft, and 9 is an auxiliary lifting hook.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in figures 1-5, the utility model discloses a straight arm lorry-mounted crane hook tightening and impact-resisting device, which comprises an upper end block 4 with an opening at the top, a spring 5 and a lower end block 6;

the lower end block 6 is provided with an accommodating cavity matched with the upper end block 4, and the bottom of the accommodating cavity is provided with a lower through hole matched with the steel wire rope 1 and movably connected with the steel wire rope 1;

the upper end block 4 is arranged in the accommodating cavity and extends out of the accommodating cavity of the lower end block 6 through a spring 5 sleeved at the bottom of the upper end block;

the middle part of the upper end block 4 is provided with an upper through hole which is coaxial with the lower through hole and is matched with the steel wire rope 1.

The tail end of the steel wire rope 1 is connected with an auxiliary lifting hook 9 through a wedge sleeve 7.

The wedge sleeve 7 is hinged with an auxiliary hook 9 through a pin shaft 8.

The upper end block 4 comprises a collision plate and a sleeve pipe which are fixedly connected in sequence;

the spring 5 is sleeved on the sleeve pipe;

the height of the spring 5 after compression (limit) is smaller than that of the sleeve, so that the spring 5 can be protected from exceeding the compression limit and damage can be prevented.

An elastic layer is arranged at the end part of the sleeve pipe facing the cavity bottom of the accommodating cavity; through the elastic layer, the impact force between the sleeve pipe and the cavity bottom is reduced, and the service life of the sleeve pipe is prolonged. The elastic layer is typically a rubber layer.

The head end of the steel wire rope 1 extends to the winch through a pulley 2 movably connected with the auxiliary hoisting support 3.

As shown in fig. 3, when the auxiliary hook 9 retracts, the lower end block 6, the spring 5 and the upper end block 4 are carried to displace upwards together, and when the upper end block 4 contacts the auxiliary lifting bracket 3, the upper end block is restrained, so that when the auxiliary hook 9 continues to retract, the spring 5 is compressed, and the spring 5 downwards forms a counter force, so that the impact of the hook on the auxiliary lifting bracket 3 is relieved; the hook tightens when the lower end face of the upper end block 4 contacts the end face of the recess of the lower end block 6.

The disclosure of the present application also includes the following points:

(1) the drawings of the embodiments disclosed herein only relate to the structures related to the embodiments disclosed herein, and other structures can refer to general designs;

(2) in case of conflict, the embodiments and features of the embodiments disclosed in this application can be combined with each other to arrive at new embodiments;

the above embodiments are only embodiments disclosed in the present disclosure, but the scope of the disclosure is not limited thereto, and the scope of the disclosure should be determined by the scope of the claims.

Claims

1. The straight arm lorry-mounted crane hook tightening and impact-resisting device is characterized by comprising an upper end block with an opening at the top, a spring and a lower end block;

2. The straight-arm lorry-mounted crane hook tightening and impact-resisting device as claimed in claim 1, wherein the tail end of the steel wire rope is connected with the auxiliary hook through a wedge sleeve.

3. The straight-arm lorry-mounted crane hook tightening and impact-resisting device as claimed in claim 2, characterized in that the wedge sleeve is hinged with the auxiliary hook through a pin shaft.

4. The straight-arm lorry-mounted crane hook tightening and impact-preventing device as claimed in claim 1, wherein the upper end block comprises a collision plate and a socket pipe which are fixedly connected in sequence;

the spring is sleeved on the sleeve pipe;

the height of the compressed spring is smaller than that of the sleeve pipe.

5. The straight-arm lorry-mounted crane hook tightening and impact-preventing device as claimed in claim 4, characterized in that an elastic layer is arranged at the end of the sleeve towards the bottom of the accommodating cavity.

6. The straight-arm lorry-mounted crane hook tightening and impact-preventing device as claimed in claim 1, wherein the head end of the wire rope extends to the winch through a pulley movably connected with the secondary hoisting support.