一种汽车起重机用液压变量马达的性能分析和优化设计

Capability Analysis and Optimization Design of Variable Hydraulic Motor Used in Automobile Crane

本文对一种广泛的应用在大吨位汽车起重机的卷扬机构的液压柱塞变量马达进行了性能的分析。通过性能分析发现其存在变量过程压力脉动大、生产技术工艺要求高和高压适应性问题。本文基于AMESim软件建立了该变量马达的液压仿真模型,并和实际试验进行了验证。基于该模型优化控制阀的关键尺寸,从而提高了先导控制压力截断阀的工作压力,降低了变量过程中的压力脉动,产品的工艺技术要求降低,提高了产品的合格率。

The paper analyzes the capability of a variable hydraulic motor widely used in hoisting bodies of large tonnage automobile crane.The problems of large pressure fluctuation in variable process,rigorous requirement of product technology and high pressure adaptability have been discovered by the capability analysis.The paper models the variable motor based on AMESim and verifies it according to the actual test.As a result of the optimization of the control valve critical dimensions based on this model,the work pressure of the pilot control cut-off valve rises,the pressure fluctuation of variable process falls, product technology requirement lowers and the passing rate of the product increases.