Rear suspension system of wide-body dump truck

Abstract

The invention discloses a rear suspension system of a wide-body dump truck. The rear suspension system is characterized by comprising a frame, hinge pins, rubber damping blocks, an intermediate axle, a balance beam, limiting plates, lower reaction rods, a rear suspension frame, a balance shaft, an upper reaction rod support, upper reaction rods, a rear axle, a shaft head end cover, a rubber block, a spacer bush, a wearing plate, a transverse draw bar support and a transverse draw bar. The rear suspension system has the advantages that a balance suspension can assuredly only move in the perpendicular direction under the effect of the gravity, and vibration can be buffered by the rubber block and the rubber damping blocks; the balance beam is allowed to rotate around the balance shaft, the spacer bush can assuredly rotate along with the balance beam when the balance beam rotates around the balance shaft, and accordingly friction between the rubber block and the spacer bush can be prevented; the intermediate axle and the rear axle can rotate around the balance shaft within small angular ranges, so that load on the intermediate axle is assuredly basically identical to load on the rear axle; the cost and the fault rate of a rear suspension can be effectively reduced.

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 leaf spring structure and oil-pneumatic suspension structure; the failure rate of leaf spring is high, which affects the operating efficiency, and the cost of oil-pneumatic suspension structure is high and it is difficult to replace once it fails. 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, which mainly solves the problems of high failure rate of the leaf spring structure of the existing rear suspension system, high cost of the oil-gas suspension structure and difficulty in replacement. . [0004] The technical solution of the present invention is: a r...

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Problems solved by technology

[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, which mainly solves the problems of high failure rate of the leaf spring structure of the existing rear suspension system, high cost of the oil-gas suspension structure and difficulty in replacement.

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