A rear suspension system of a wide-body dump truck

Abstract

The invention discloses a rear suspension system for a wide-body dumper and belongs to the technical field of non-railway dumpers. The rear suspension system is characterized in that a balancing suspension bracket is connected with a frame through a traction frame, a rear suspension cylinder and a transverse pull rod, and thus the balancing suspension bracket can be ensured to only move in the vertical direction and the force borne by the balancing suspension bracket is transferred to the frame; an intermediate axle and a rear axle are connected with the balancing suspension bracket through a front longitudinal pull rod, a rear longitudinal pull rod, a balance beam, a front transverse pull rod and a rear transverse pull rod, so that forces borne by the intermediate axle and rear axle can be ensured to be transferred to the balancing suspension bracket and the force borne by the intermediate axle is ensured to be equal to that borne by the rear axle; the rear suspension cylinder is fixed by the pressing force of a locking nut instead of interference fit, and thus the convenience for mounting is realized. Compared with a steel plate spring structure, the structure adopted by the rear suspension system has the advantages that the bearing capacity of the suspension cylinder is greater than that of a steel plate spring; in addition, no friction pair exists in the whole system, so that the difficulty that the current wide-body dumper is difficult to develop towards a large tonnage due to high suspension fault rate can be solved.

Description

Technical field: [0001] The invention relates to the technical field of off-highway dump trucks, in particular to a rear suspension system of a wide-body dump truck. technical background: [0002] At present, the rear suspension system of wide-body dump trucks generally adopts a leaf spring structure. Due to the limitation of its structure, its maximum total mass is generally controlled at about 60 tons, which makes it difficult to develop to a large tonnage. Moreover, the failure rate of leaf springs is high, which affects operating efficiency. . Invention content: [0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a rear suspension system of a wide-body dump truck, so as to reduce the failure rate of the rear suspension, and at the same time provide a brand-new platform for the development of a wide-body dump truck to large tonnage. [0004] The technical solution of the present invention is: a rea...

AI Technical Summary

Problems solved by technology

[0002] At present, the rear suspension system of wide-body dump trucks generally adopts a leaf spring structure. Due to the limitation of its structure, its maximum total mass is generally controlled at about 60 tons, which makes it difficult to develop to a large tonnage. Moreover, the failure rate of leaf springs is high, which affects operating efficiency.

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