双枪高压无气喷涂机柱塞泵结构设计∗

摘要

In order to solve the shortages of double-gun high-pressure airless spraying machine in domestic, the double-gun high-pressure airless spraying machine was researched and developed in this paper. The working principle and composition of high-pressure airless spraying machine were introduced. Through analysis and research of the high-pressure airless spraying machine, the plunger pump of spraying machine was designed. The strength of hydraulic pump plunger was analyzed based on the Ansys software. The maximum tensile stress was 59. 3 MPa which occurred at the top corner of the notch. The maximum compressive stress in the plunger notch and lower shaft suddenly increased or decreased, and the maximum compressive stress is 36. 5 MPa. It is shown through the analysis that the strength and stiffness of hydraulic piston pump were compliance with the design requirements. It would provide theoretical basis for the structural design of the piston pump.%为了解决目前国内双枪高压无气喷涂机紧缺的现状，研制开发了双枪高压无气喷涂机，介绍了双枪高压无气喷涂机的的工作原理和组成。通过对双枪高压无气喷涂机的分析与研究，设计了喷涂机柱塞泵体，并基于Ansys软件对液压泵的柱塞进行了强度分析，最大拉应力发生凹口上端拐角处，最大拉应力为59.3 MPa。柱塞的最大压应力发生在凹口下端及轴的突然增大或减小处，且最大压应力为36.5 MPa。通过分析得出液压泵柱塞在强度和刚度上完全符合设计的要求，为柱塞泵的结构设计提供了理论依据。