WO2020125425A1 - Mining dump truck front axle structure - Google Patents

Abstract

A mining dump truck front axle structure, comprising an axle body welded main beam. The axle body welded main beam comprises: an arced upper top plate (6), an arced lower base plate (7), and arced webs (8). The arced upper top plate (6) and the arced lower base plate (7) are connected with each other via the two arced webs (8). A welding pad (9) is connected at the connection. The axle welded main beam is overall a large circular arc smooth transition. The arced upper top plate (6) and the arced lower base plate (7) employ an arced transition at the arced position. The upper parts and the lower parts of the arced webs (8) are arced edges. The mining dump truck front axle structure is altered into a circular arc, thus significantly increasing the carrying capacity of the structure, and greatly extending the service life.

Description

Front axle structure of mining dump truck

This application is based on the following Chinese patent applications:

Application number: 201811542596.2, application date: December 17, 2018

Name: Front axle structure of mining dump truck

And the priority of the above-mentioned Chinese patent application is required. The entire content of the above-mentioned Chinese patent application is hereby incorporated by reference.

Technical field

The invention relates to a mining dump truck, in particular, to a front axle structure of a mining dump truck.

Background technique

Off-highway mining dump trucks are the main transportation equipment for large open-pit mines, with complex structure and harsh working environment. The front axle of the mining dump truck is an important part of the entire mining truck walking system, and its structural performance has an important impact on the use and maintenance of the mining dump truck.

As shown in FIG. 1, it is a schematic diagram of the front axle structure in the prior art; as shown in FIG. 2, it is a schematic sectional view in the A-A direction of the prior art.

The overall structure of the front axle is "concave", and is mainly composed of the main welded bridge beam, suspension cylinder support, tie rod support, and longitudinal tie rod support. Among them, the welding main beam of the bridge body is formed by welding the upper top plate 1, the lower bottom plate 2, the two front and rear web plates 3 and the welding lining plate 4.

The upper top plate 1 and the lower bottom plate 2 are connected by two front and rear webs 3, the upper top plate 1 and the front and rear two webs 3 are welded together by a welding lining 4, and the lower bottom plate 2 and the front and rear two webs 3 are welded The pads 5 are welded together. The web 3 has grooves of a certain length at the corner transitions, which are welded together with the welding liner 4 through filling and welding. These are to strengthen the strength of the original structure at the corners, but it is actually unable to compensate for its own structure. Stress concentration phenomenon.

The front axles of existing mining dump trucks are all welded with a square box-shaped steel plate structure, and the two ends have a "Z" type small angle transition structure. This structure is concentrated in use when there is a small angle in use, so the structural load-bearing capacity Not strong, it is easy to cause weld cracking and other phenomena. With the market demand for non-highway mining dump trucks for larger tonnage models, the current strength issues of the front axle structure have become more prominent, and can no longer meet the requirements of safe and reliable operation of vehicles.

Summary of the invention

The technical problem solved by the present invention is to provide a front axle structure of a mining dump truck. The structure of the front axle body of the mining dump truck is changed to a round arch shape, which greatly improves the structural load-bearing capacity and the service life.

The technical solution is as follows:

The front axle structure of the mining dump truck includes the main welding beam of the bridge body. The main welding beam of the bridge body includes: an arc-shaped upper roof plate, an arc-shaped lower bottom plate, an arc-shaped web plate, an arc-shaped upper top plate and an arc-shaped lower bottom plate The block arc webs are connected, and the connection position is connected with welding pads; the overall welding main beam of the bridge body is rounded and the arc is smoothly transitioned, and the upper arc plate and the lower arc plate adopt the arc transition at the bending position. The upper and bottom of the shaped web are curved edges.

Further, the arc-shaped upper top plate, the arc-shaped lower bottom plate, and the arc-shaped web plate form a box structure by welding, and the inner four corners are lapped by welding pads.

Further, the arc-shaped upper top plate and the arc-shaped lower bottom plate are rolled into a round arch shape by the whole steel plate, the upper and bottom of the arc-shaped web are arc-shaped edges, and the arc-shaped edges and the shape of the arc-shaped upper top plate and the arc-shaped lower bottom plate Adapt.

The technical effects of the present invention include:

Under the condition that the weight of the front axle structure itself is not increased, the present invention increases the strength of the front axle by more than 20% through the change and optimization of the structural form. The reinforced lining plate inside the structure of the original front axle and the welded lining plate at the small rounded corners are removed, thereby simplifying the structure, and at the same time making the entire front axle stressed more uniformly, with strong structural strength and long service life.

1. The present invention changes the structure of the front axle body of the mining dump truck to a round arch shape, which greatly improves the bearing capacity of the structure and greatly extends the service life.

2. The present invention jumps out of the conventional idea of strengthening the front axle strength of mining dump trucks by adding thicker materials, and does not use welding reinforcement bars to increase the weight of the bridge body, which makes the structure simpler and increases The load capacity of the vehicle and the fuel economy of the vehicle operation.

3. After optimizing the structure of the present invention, the reinforcement ribs and reinforcing ribs that are no longer necessary are streamlined, the processing procedure is reduced, and thus the production cost is reduced.

4. The present invention is not only applicable to the field of mining dump trucks, but also applicable to other heavy and engineering vehicles, and has a wide range of applications.

Brief description of the drawings

Figure 1 is a schematic diagram of the structure of the front axle in the prior art;

FIG. 2 is a schematic cross-sectional view taken along line A-A in the prior art;

3 is a schematic diagram of the front axle structure of the dump truck for mining in the present invention;

4 is a schematic cross-sectional view of the front axle structure of the mining dump truck in the B-B direction of the present invention.

Preferred embodiments of the invention

The technical solutions of the present invention will be described in detail below with reference to example embodiments. However, the exemplary embodiments can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein; on the contrary, providing these embodiments makes the present invention more comprehensive and complete, and fully conveys the concept of the exemplary embodiments For those skilled in the art.

The invention changes the existing "concave" structure of the front axle body of the mining dump truck in the prior art, creatively proposes a new arch structure, the overall shape of the arch bridge body is smooth, and there are no singular points on the force, making The force is evenly distributed on the bridge body, which greatly enhances the load capacity of the front axle itself. At the same time, it simplifies the reinforcement liner and other components that have to be welded due to insufficient previous strength, making the structure and processing procedures simpler.

As shown in FIG. 3, it is a schematic diagram of the front axle structure of the mining dump truck in the present invention; FIG. 4 is a schematic sectional view of the front axle structure of the mining dump truck in the B-B direction of the present invention;

The structure of the front axle of the mining dump truck, the structure of the main beam of the welding body of the bridge body includes: an arc-shaped upper top plate 6, an arc-shaped lower bottom plate 7, an arc-shaped web 8, the arc-shaped upper top plate 6 and the arc-shaped lower bottom plate 7 pass between Two curved webs 8 are connected. The arc-shaped upper top plate 6, the arc-shaped lower bottom plate 7, and the arc-shaped web 8 form a box structure by welding, and the inner four corners are lapped by welding pads 9. The overall welding main beam of the bridge body is round and arc-shaped. The arc-shaped top plate 6 and the arc-shaped bottom plate 7 are over-curved at the bending position. The upper and bottom of the arc-shaped web 8 are arc-shaped edges. The shape structure makes the stress more dispersed, and solves the defect of stress concentration at each corner in the prior art, without the need for the opening of the web 3 itself and the addition of a welding lining plate inside.

The arc-shaped upper top plate 6 and the arc-shaped lower bottom plate 7 are rolled into a round arch shape through the whole steel plate, and the upper and bottom of the arc-shaped web 8 are arc-shaped edges. The arc-shaped upper plate 6 and the arc-shaped lower bottom plate 7 shapes fit.

It should be understood that the above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited to this, and any person skilled in the art can easily think of changes within the technical scope disclosed by the present invention. Or it should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Industrial applicability

The invention changes the structure of the front axle body of the mining dump truck to a circular arch shape, which greatly improves the bearing capacity of the structure and greatly extends the service life. After the structure is optimized, the invention simplifies the reinforcement ribs and the like that are no longer necessary, reduces the processing technological process, and thus reduces the production cost.

Claims (3)

1. The front axle structure of a mining dump truck includes a main welding beam of the bridge body, which is characterized in that the main welding beam of the bridge body includes: an arc-shaped upper roof plate, an arc-shaped lower bottom plate, an arc-shaped web, an arc-shaped upper top plate and an arc-shaped lower bottom plate It is connected by two arc-shaped webs, and welding pads are connected at the connection position; the overall welded main beam of the bridge body is rounded and a large arc smoothly transitions, and the arc-shaped upper top plate and the arc-shaped lower bottom plate adopt arcs at the bending position Over-shaped, the upper and bottom of the curved web are curved edges.
2. The front axle structure of a mining dump truck according to claim 1, characterized in that the arc-shaped upper roof plate, the arc-shaped lower floor plate, and the arc-shaped web plate form a box structure by welding, and the inner four corners are lapped by welding pads.
3. The front axle structure of a mining dump truck according to claim 1, characterized in that the curved upper roof and the curved lower bottom plate are rolled into a circular arch shape by the whole steel plate, and the upper and bottom of the curved web are curved edges , The curved edge is adapted to the shape of the curved upper top plate and the curved lower bottom plate.

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