阅读说明：本技术 一种载货汽车液压尾板举升臂结构 (Cargo vehicle hydraulic pressure tailboard lifts arm structure ) 是由 宋作伟 王泽黎 于 2020-04-29 设计创作，主要内容包括：本发明提供一种载货汽车液压尾板举升臂结构,属于液压尾板结构领域。本发明包括举升臂前端件、举升臂后端件和设置在所述举升臂前端件和举升臂后端件之间的筋板件,所述举升臂前端件设有与前销轴套件固定连接的第一销轴孔及连接液压组件的连接孔,所述举升臂后端件设有与后销轴套件固定连接的第二销轴孔。本发明的有益效果为：可以最大程度轻量化；减少了原材料的浪费,节约了社会资源。(The invention provides a lifting arm structure of a hydraulic tail plate of a truck, belonging to the field of hydraulic tail plate structures. The hydraulic lifting arm comprises a lifting arm front end part, a lifting arm rear end part and a rib plate part arranged between the lifting arm front end part and the lifting arm rear end part, wherein the lifting arm front end part is provided with a first pin shaft hole fixedly connected with a front pin shaft sleeve and a connecting hole connected with a hydraulic assembly, and the lifting arm rear end part is provided with a second pin shaft hole fixedly connected with a rear pin shaft sleeve. The invention has the beneficial effects that: the weight can be reduced to the maximum extent; the waste of raw materials is reduced, and social resources are saved.)

1. The utility model provides a cargo vehicle hydraulic pressure tailboard lifts arm structure which characterized in that: the hydraulic lifting arm comprises a lifting arm front end part, a lifting arm rear end part and a rib plate part arranged between the lifting arm front end part and the lifting arm rear end part, wherein the lifting arm front end part is provided with a first pin shaft hole fixedly connected with a front pin shaft sleeve and a connecting hole connected with a hydraulic assembly, and the lifting arm rear end part is provided with a second pin shaft hole fixedly connected with a rear pin shaft sleeve.

2. The truck hydraulic tailgate lifting arm structure according to claim 1, characterized in that: the lifting arm front end piece is provided with a first connecting groove facing the direction of the lifting arm rear end piece, and comprises a first connecting piece and a second connecting piece which are arranged on two sides of the first connecting groove respectively.

3. The truck hydraulic tailgate lifting arm structure according to claim 2, characterized in that: the lifting arm rear end part is provided with a second connecting groove facing the direction of the lifting arm front end part, and the lifting arm rear end part comprises a third connecting piece and a fourth connecting piece which are arranged on two sides of the second connecting groove respectively.

4. The truck hydraulic tailgate lifting arm structure according to claim 3, characterized in that: the rib plate piece comprises an upper rib plate piece and a lower rib plate piece, two ends of the upper rib plate piece are fixedly connected with the first connecting piece and the third connecting piece respectively, and two ends of the lower rib plate piece are fixedly connected with the second connecting piece and the fourth connecting piece respectively.

5. The truck hydraulic tailgate lifting arm structure according to claim 4, characterized in that: the hydraulic tail plate lifting arm structure of the truck comprises a lifting arm front end part, a lifting arm rear end part, an upper rib plate part and a lower rib plate part, wherein the lifting arm front end part, the lifting arm rear end part, the upper rib plate part and the lower rib plate part are enclosed into a hollow plate, the hydraulic tail plate lifting arm structure of the truck further comprises a web plate, and the shape of the web plate is matched with that of a hollow area and is fixedly connected with the lifting arm front end part, the lifting arm rear end part, the upper rib plate part and the.

6. The truck hydraulic tailgate lifting arm structure according to claim 5, characterized in that: the plate thicknesses of the lifting arm front end part, the lifting arm rear end part, the upper rib plate part and the lower rib plate part are consistent, and the plate thickness of the web plate part is smaller than that of the lifting arm front end part.

7. The truck hydraulic tailgate lifting arm structure according to claim 6, characterized in that: the web members and the plates are combined in an I-shaped longitudinal section and symmetrically arranged on the longitudinal section.

8. The truck hydraulic tailgate lifting arm structure according to claim 7, characterized in that: be equipped with in first spread groove and the second spread groove respectively right the web member fixed position is spacing recess, the both ends of web member set up respectively in spacing recess.

9. The truck hydraulic tailgate lifting arm structure according to claim 5, characterized in that: more than one lightening hole is arranged on the web plate.

10. The truck hydraulic tailgate lifting arm structure according to any one of claims 2-9, characterized in that: the lifting arm rear end piece has the same shape as the first connecting groove.

Technical Field

The invention relates to a hydraulic tail plate structure, in particular to a lifting arm structure of a hydraulic tail plate of a truck.

Background

The hoisting tail board installed at the tail part of the truck and the trailer is an electromechanical and hydraulic integrated vehicle-mounted device which can improve the loading and unloading efficiency and reduce the labor intensity of workers. Huge stock and newly increased market demand every year exist in the logistics equipment markets at home and abroad.

The hoisting tail plate is generally composed of two parts, namely a hoisting tail plate hoisting frame 1 and a hoisting tail plate base member 2. After the hoisting tail plate is connected with the frame of the freight car through the connecting plate 3 of the hoisting frame 1 of the hoisting tail plate, the hoisting tail plate becomes a vehicle-mounted functional mechanism of the freight car, as shown in figure 1.

The hoisting tail plate base member 2 is mainly composed of 4 large components. Namely a loading platform assembly 2-1, a lifting arm assembly 2-2, a frame assembly 2-3, and a hydraulic assembly 2-4, as shown in fig. 2.

The lifting arm assembly 2-2 is connected with the loading and unloading platform assembly 2-1, the rack assembly 2-3 and the hydraulic assembly 2-4, and plays a role in bearing, transmitting force and moment, guaranteeing positions and the like in the lifting tail plate. Is one of the core components of the lifting yoke. The main plate 2-2-1 of the conventional lifting arm is usually formed by directly cutting a thick steel plate. After the necessary pin shaft holes are processed, the front pin shaft sleeve 2-2-2 and the rear pin shaft sleeve 2-2-3 are welded to form the lifting arm assembly, as shown in figure 3.

The lifting arm main board 2-2-1 directly cut and formed by the thick steel plate has structural limitation and defects which cannot be overcome by the lifting arm main board, and mainly comprises the following two points:

firstly, the method comprises the following steps: under the international energy shortage environment, the light weight design of the cargo vehicle is carried out by applying various advanced technologies and means so as to achieve the purposes of saving fuel and reducing cost. The lifting arm main plate 2-2-1 directly cut and formed by the thick steel plate cannot be lightened to the greatest extent, and is not in line with the trend direction of the development of logistics equipment.

Secondly, the method comprises the following steps: to meet the various functional requirements of the lift yoke, the lift arm main plate 2-2-1 generally has a complex outer contour. When the lifting arm main board 2-2-1 is cut and formed, the material utilization rate of the raw material base body board is low, the waste and the surplus materials are large, and the economy is poor. The limitations of this sheet material construction increase the manufacturing costs of the crane tail panel manufacturing enterprise and indirectly increase the costs of the end user customers, as shown in fig. 4.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a lifting arm structure of a hydraulic tail plate of a truck, and the purposes of lightening the main plate of the lifting arm and improving the material utilization rate of a base plate are achieved through a material combination technology.

The hydraulic lifting arm comprises a lifting arm front end part, a lifting arm rear end part and a rib plate part arranged between the lifting arm front end part and the lifting arm rear end part, wherein the lifting arm front end part is provided with a first pin shaft hole fixedly connected with a front pin shaft sleeve and a connecting hole connected with a hydraulic assembly, and the lifting arm rear end part is provided with a second pin shaft hole fixedly connected with a rear pin shaft sleeve.

The invention is further improved, the lifting arm front end piece is provided with a first connecting groove facing the lifting arm rear end piece, and the lifting arm front end piece comprises a first connecting piece and a second connecting piece which are respectively arranged at two sides of the first connecting groove.

The invention is further improved, the lifting arm rear end part is provided with a second connecting groove facing the lifting arm front end part, and the lifting arm rear end part comprises a third connecting piece and a fourth connecting piece which are respectively arranged at two sides of the second connecting groove.

The invention is further improved, the rib plate part comprises an upper rib plate part and a lower rib plate part, two ends of the upper rib plate part are respectively and fixedly connected with the first connecting part and the third connecting part, and two ends of the lower rib plate part are respectively and fixedly connected with the second connecting part and the fourth connecting part.

The invention further improves the structure, the front end part of the lifting arm, the rear end part of the lifting arm, the upper rib plate part and the lower rib plate part are enclosed to form a hollow plate, the structure of the hydraulic tail plate lifting arm of the truck also comprises a web plate, and the shape of the web plate is matched with that of the hollow area and is respectively and fixedly connected with the front end part of the lifting arm, the rear end part of the lifting arm, the upper rib plate part and the lower rib plate.

The invention is further improved, the plate thickness of the lifting arm front end part, the lifting arm rear end part, the upper rib plate part and the lower rib plate part is consistent, and the plate thickness of the web plate part is smaller than that of the lifting arm front end part.

The invention is further improved, the web members and the plate members are combined in an I-shaped longitudinal section and are symmetrically arranged on the longitudinal section.

The invention is further improved, the first connecting groove and the second connecting groove are respectively provided with a limiting groove for limiting the fixed position of the web member, and two ends of the web member are respectively arranged in the limiting grooves.

The invention is further improved, and more than one lightening hole is arranged on the web member.

In a further development of the invention, the rear end part of the lifting arm has the same shape as the first connecting groove.

Compared with the prior art, the invention has the beneficial effects that: the weight can be reduced to the maximum extent; the waste of raw materials is reduced, and social resources are saved.

Drawings

FIGS. 1-2 are schematic views of the mounting positions of the lifting arm structures;

FIGS. 3 and 4 are schematic prior art structures;

FIG. 5 is an exploded view of an embodiment of the present invention;

FIGS. 6 and 7 are schematic structural views of another embodiment of the present invention;

FIG. 8 is a schematic structural view of a front piece of the lift arm;

FIG. 9 is a schematic view of the rear end piece of the lifting arm;

FIG. 10 is a side view of FIG. 6;

FIG. 11 is a cross-sectional view A-A of FIG. 10 in a symmetrical arrangement;

FIG. 12 is a cross-sectional view B-B of FIG. 10 in a symmetrical arrangement;

FIG. 13 is a cross-sectional view C-C of FIG. 10 in a symmetrical arrangement;

FIG. 14 is a cross-sectional view A-A of an asymmetric design;

fig. 15 is a schematic structural diagram of a third embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The invention is suitable for the lifting arm structure in the lifting tail plate of the vehicle-mounted loading and unloading automatic equipment of a truck and a trailer, and the lifting tail plate of the truck is divided into three main series of 1 ton, 1.5 ton and 2 ton according to the lifting capacity. In 3 series, trucks of different tonnages require different stiffness of the lifting arm structure. The following examples are given by way of illustration.