混凝土输送泵车液压系统设计.pdf

混凝土输送泵车液压系统设计 王文红，秦艳 215600 摘要： 关键词： 中图分类号：TH137 文献标识码：A 文章编号：1006－0316 (2010) 10 －0056 －04 The design of hydraulic system for the vehicle of concrete pumping WANG Wen-hongQIN yan Mechanical Electrical Engineering DepartmentShazhou Professional Institute of Technology Zhangjiaxiang 215600China Abstract This paper introduces the pump transport work theory of the vehicle of concrete pumping, designs the schematic diagram of the vehicle of concrete pumping hydraulic system and analyses the working theory of main pump transport system, exchange system, mixing system and water washing systems in detail. Hydraulic components are adopted from German Rexroth oil pump and valve box, which makes hydraulic system have the following properties: main pump’s constant-power characteristics have high efficiency though the resistance of pump transport change highly, and the system become more reliable because of the functions of pressure’s cutting off and hydraulic stroke restriction; the reversing system of constant pressure pump combined with accumulator makes reversing rapidly and the hydraulic impact is low; the mixing system has the function of manual inversion and automatic inversion when the material is jammed; the pump has auto reversal function because of pipe blockage and has two high-low pressure pump transport methods. Key words vehicle of concrete pumping hydraulic system main pump transport system exchange system mixing system water washing system