Hydraulic system of wide-body dump truck

Abstract

The invention discloses a hydraulic system of a wide-body dump truck. The hydraulic system is characterized by consisting of a hydraulic oil tank, an engine, a power steering pump, a high pressure filter, a reversing valve, an energy accumulator, a cooling pipeline, a steering gear, a steering actuation cylinder, a gearbox PTO, a lifting pump, an oil return filter, a lifting cylinder, an air control reversing valve and a connecting pipeline; the power steering pump is connected with the engine, and the lifting pump is connected to the gearbox PTO through a transmission shaft; the power steering pump is connected to the reversing valve after passing through the high pressure filter; two oil passages are formed after passing through the reversing valve, one oil passage is connected to the energy accumulator and the steering gear to supply oil to a steering system, and the other oil passage is connected with the air control reversing valve after passing through the cooling pipeline and supplies oil to a hydraulic lifting system; and emergency steering is realized, the safety is improved, the oil temperature of the hydraulic system is significantly reduced, and the cleanliness of the hydraulic oil is improved.

Description

Technical field: [0001] The invention relates to the technical field of non-highway wide body dump trucks, in particular to a hydraulic system of wide body dump trucks. technical background: [0002] The wide-body dump truck is developed on the basis of the dump truck. Its steering system and hydraulic lifting system also use the dump truck technology. The steering system adopts hydraulic power steering, and the hydraulic lifting system is two relatively independent systems. There are two problems in the existing steering system: 1. Due to the limitation of existing resources, the flow of the steering system is low, and the flow is insufficient when the direction is turned urgently; 2. [0003] After losing power, the hydraulic power assist cannot work, and the steering can only be completed through mechanical transmission. However, the front axle load of the wide-body dump truck is large, and the steering cannot be completed by manpower alone. There is no emergency steering...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a hydraulic system of a wide-body dump truck; it mainly solves the problem that the existing wide-body dump truck steering system has low flow rate, no emergency steering, high oil temperature of the hydraulic lift system, and Problems such as poor cleanliness, low flow rate of the lifting pump, slow lifting speed and low unloading efficiency

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