CN210707062U

CN210707062U - Locking mechanism for rear door of scissor-type dump truck

Info

Publication number: CN210707062U
Application number: CN201921420301.4U
Authority: CN
Inventors: 杨位东; 崔振; 王强; 盛世; 朱安慰; 陈震; 杨康
Original assignee: Xuzhou Xugong Automobile Manufacturing Co ltd
Current assignee: Xuzhou XCMG Heavy Vehicle Co.,Ltd.
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-06-09
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses a locking mechanism for a scissor type dumper back door, which comprises a container main body, wherein the tail part of the container main body is provided with a back door, two sides of the container main body are hinged with back door supporting arms, the bottom of the container main body is provided with a chassis, and the locking mechanism also comprises a back drag hook arranged below the back door; one end of the rear door supporting arm is connected to the chassis through a flexible traction piece, the middle part of the rear door supporting arm is hinged to two sides of the container main body through a hinge shaft, and the tail part of the rear door supporting arm is fixedly connected with the rear door through a limiting plate; one end of the rear drag hook is connected with the chassis through a chain, and the other end of the rear drag hook is movably connected with the rear door in a limiting way. The utility model discloses a locking mechanism has avoided jolting from top to bottom of back door and the material that produces leaks.

Description

Locking mechanism for rear door of scissor-type dump truck

Technical Field

The utility model relates to a locking mechanism for scissors formula tipper back door belongs to the tipper field.

Background

In construction sites such as quarries and the like, stones generated after blasting the mountain with gunpowder are large, and the size of part of stones is even more than 1 meter. The traditional dumper container back door is small in opening range and always suffers from high failure rate caused by impact of stones and other goods. The problem can be solved to the opening range of current scissors formula back door great, but scissors formula back door can't lock and lead to leaking the condition of material frequent emergence.

Disclosure of Invention

Problem to above-mentioned prior art exists, the utility model provides a locking mechanism for scissors formula tipper back door solves the unable locking problem of scissors formula back door.

In order to achieve the purpose, the locking mechanism for the rear door of the scissor-type dump truck comprises a container main body, wherein the rear door is installed at the tail part of the container main body, rear door supporting arms are hinged to two sides of the container main body, a chassis is arranged at the bottom of the container main body, and the locking mechanism further comprises a rear drag hook installed below the rear door;

one end of the rear door supporting arm is connected to the chassis through a flexible traction piece, the middle part of the rear door supporting arm is hinged to two sides of the container main body through a hinge shaft, and the tail part of the rear door supporting arm is fixedly connected with the rear door through a limiting plate; one end of the rear drag hook is connected with the chassis through a chain, and the other end of the rear drag hook is movably connected with the rear door in a limiting way.

As a refinement, the rear door support arm is triangular.

As an improvement, the flexible traction element adopts a rope or a chain which can be pulled and cannot be compressed.

As an improvement, the rear drag hook comprises a fixed hook body fixed on the container main body and a rotating hook body hinged with the fixed hook body;

the rotating hook body is hinged with the fixed hook body through a first pin shaft, the middle of the rotating hook body is connected with the chain through a second pin shaft, and when the chain is tightened, the upper end of the rotating hook body is locked on the back door.

As an improvement, a groove matched and locked with the rotating hook body is formed in the rear door.

As an improvement, the limiting plate is welded with the rear door.

Compared with the prior art, the utility model discloses a locking mechanism, when the packing box descends, can effectively reliably lock scissors formula back door on the packing box, avoid producing relative motion between back door and the packing box, and then avoided the packing box to appear the condition of leaking the material in advancing the in-process.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a partially enlarged schematic view of the present invention;

in the figure: 1. the cargo box comprises a cargo box main body, 11, a hinge shaft, 2, a rear door supporting arm, 21, a limiting plate, 3, a rear door, 4, a rear pull hook, 41, a fixed hook body, 42, a first pin shaft, 43, a second pin shaft, 44, a rotating hook body, 5, a lock chain, 6, a chassis, 7 and a flexible traction piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.

As shown in fig. 1 and 2, a locking mechanism for a rear door of a scissor-type dump truck comprises a container body 1, wherein a rear door 3 is installed at the tail part of the container body 1, rear door supporting arms 2 are hinged to two sides of the container body 1, a chassis 6 is arranged at the bottom of the container body 1, and a rear draw hook 4 is installed below the rear door 3;

one end of the rear door supporting arm 2 is connected to the chassis 6 through a flexible traction piece 7, the middle part of the rear door supporting arm 2 is hinged to two sides of the container main body 1 through a hinge shaft 11, and the tail part of the rear door supporting arm 2 is fixedly connected with the rear door 3 through a limiting plate 21; one end of the rear drag hook 4 is connected with the chassis 6 through a chain 5, and the other end is movably connected with the rear door 3 in a limiting way.

As improvement of the embodiment, the back door supporting arm 2 is triangular, so that the back door and the supporting arm can be better fixedly connected together, and the generation of a cantilever beam is avoided, and the use strength is not influenced.

As an improvement of the embodiment, the flexible traction piece 7 adopts a rope or a chain which can be pulled and can not be pressed, the sequence of locking the rear draw hook and closing the rear door can be ensured by adjusting the redundant length of the flexible traction piece, and the damage of the structural part caused by the length error in the using process can be avoided.

As a modification of the embodiment, the rear drag hook 4 comprises a fixed hook body 41 fixed on the cargo box body 1, and a rotating hook body 44 hinged with the fixed hook body 41; the rotating hook body 44 is hinged to the fixed hook body 41 through a first pin shaft 42, the middle of the rotating hook body 44 is connected with the lock chain 5 through a second pin shaft 43, and when the lock chain 5 is tightened, the upper end of the rotating hook body 44 is locked on the rear door 3.

As an improvement of the embodiment, the rear door 3 is provided with a groove matched and locked with the rotating hook body 4, and when the rear door 3 is locked, the rear pull hook 4 can ensure that the rear door 3 is tightly attached to the container body 1 and can pull the rear door 3 downwards, so that the rear door 3 is prevented from bumping up and down.

As an improvement of the embodiment, the limiting plate 21 is welded with the rear door 3, and the structural stability is high.

When the lifting device is used, the container turns backwards in the lifting process of the oil cylinder, meanwhile, the rear pull hook 4 is gradually separated from the rear door 3 under the action of gravity, and the flexible traction piece 7 is gradually tensioned; when the flexible traction piece 7 is tensioned, the rear draw hook 4 is already separated from the rear door 3; the container is turned backwards continuously, and the flexible traction piece 7 is tensioned and cannot be extended further, so that the container is rotated through the hinge shaft 11 to push the rear door supporting arm 2 upwards, the rear part (the position of the limiting plate 21) of the rear door supporting arm 2 is tilted upwards, and the rear door 3 is opened;

when the container falls back, the rear door 3 gradually resets under the action of gravity until the flexible traction piece 7 is loosened, and the rear door 3 finishes resetting; the container continues to fall back, the chain 5 is gradually tightened, and the rear door 3 is locked by the rear drag hook 4.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. A locking mechanism for a rear door of a scissor-type dump truck comprises a container body (1), wherein a rear door (3) is mounted at the tail of the container body (1), rear door supporting arms (2) are hinged to two sides of the container body (1), a chassis (6) is arranged at the bottom of the container body (1), and the locking mechanism is characterized by further comprising a rear drag hook (4) mounted below the rear door (3);

one end of the rear door supporting arm (2) is connected to the chassis (6) through a flexible traction piece (7), the middle part of the rear door supporting arm (2) is hinged to the two sides of the container main body (1) through a hinge shaft (11), and the tail part of the rear door supporting arm (2) is fixedly connected with the rear door (3) through a limiting plate (21); one end of the rear drag hook (4) is connected with the chassis (6) through a chain (5), and the other end is movably connected with the rear door (3) in a limiting way.

2. The locking mechanism for the tailgate of a scissor dump truck according to claim 1, wherein the tailgate support arm (2) is triangular.

3. A locking mechanism for a scissor dump truck tailgate according to claim 1, wherein the flexible traction member (7) is a rope or chain that can be pulled and not compressed.

4. The locking mechanism for the tailgate of a scissor dump truck according to claim 1, wherein the rear retractor (4) comprises a fixed hook body (41) fixed on the cargo box body (1), and a rotating hook body (44) hinged with the fixed hook body (41);

the rotating hook body (44) is hinged to the fixed hook body (41) through a first pin shaft (42), the middle of the rotating hook body (44) is connected with the lock chain (5) through a second pin shaft (43), and when the lock chain (5) is tightened, the upper end of the rotating hook body (44) is locked on the rear door (3).

5. The locking mechanism for the rear door of the scissor dump truck according to claim 4, wherein the rear door (3) is provided with a groove matched and locked with the rotating hook body (44).

6. The locking mechanism for the rear door of the scissor dump truck according to claim 1, wherein the limiting plate (21) is welded to the rear door (3).