Main-auxiliary integrated frame of heavy dumper

Abstract

The invention provides a main-auxiliary integrated frame of a heavy dumper. The main-auxiliary integrated frame comprises a main frame body and an auxiliary frame body. Integration reinforcing plates are correspondingly arranged on the outer sides of two longitudinal beams of the main frame body and extend from the tail of the main frame body to the portions, where front leaf springs and back lifting lugs are installed, of the main frame body, are of through type structures and are fixedly connected to the longitudinal beams of the main frame body through bolts or rivets. A notch structure is formed between the two integration reinforcing plates. The auxiliary frame body is fixed to the portion between the two integration reinforcing plates through bolts to be integrated with the main frame body. The upper ends of the two integration reinforcing plates extend out of the upper end face of the auxiliary frame body to form carriage limiting grooves respectively, and are of aligned edge structures or overturned edge structures. Supporting plates are correspondingly arranged on the outer sides of the tails of the two integration reinforcing plates. An outer overturning support is arranged on each supporting plate. Inner overturning supports are arranged at the portions, corresponding to the outer overturning supports, of longitudinal beams of the auxiliary frame body. By means of the main-auxiliary integrated frame, the production technology is simple, the assembling efficiency is high, maintaining and disassembling are convenient, and applicability is high.

Description

Technical field [0001] The invention relates to an automobile frame structure, in particular to a main and auxiliary joint structure frame for a heavy dump truck. Background technique [0002] The dump truck frame is generally composed of two parts, a main frame and a sub-frame, which play a role in supporting and connecting various parts of the vehicle and bearing the load inside and outside the vehicle. [0003] The main frame of the dump truck is weak at the rear axle and the rear lugs of the front axle, and is prone to deformation or breakage, so most of them are equipped with reinforced parts. [0004] Due to the height of the dump truck subframe and the height of the longitudinal beam of the car body, it determines the height of the vehicle's center of gravity and the distance between the tires and the car body underframe. Therefore, in order to reduce the center of gravity of the vehicle and ensure that the bottom longitudinal beam of the car body has sufficient Only the heig...

AI Technical Summary

Problems solved by technology

Because the U-bolt connection block is easy to be pulled and deformed after being stressed, the connection is loose. In addition, in many places, it is not easy to assemble due to the interference of chassis components. The connection of the sub-frame is weak, and when the vehicle dumps materials, accidents often occur due to insufficient force on the rear of the sub-frame

At the same time, the sub-frame and the main frame are connected by U-shaped bolts, resulting in poor lateral displacement and front and rear displacement capabilities of the box body due to factors such as gravity and inertia. When assembling, it is necessary to use connectors with the function of preventing lateral displacement. Used with U-bolts, the assembly volume is large, time-consuming, labor-intensive, heavy, and costly

[0007] Because the sub-frame needs to withstand relatively large pressure and torsion, and needs to control the bottom of the box body at the same time, its structure is complex, with many components, heavy weight, high manufacturing cost, difficult processing, and relatively complicated assembly process

For this reason, many dump truck manufacturers weld the reinforcement plates of the subframe and the main frame together, and weld the rear turning system of the subframe and the rear turning support system of the main frame. Will destroy the rigidity and strength of the frame

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