基于斜盘式轴向柱塞泵结构优化的应用研究.pdf

液压气动与密封/2011年第7期
基于斜盘式轴向柱塞泵结构优化的应用研究
张志鹏1李松松2
(1.西南交通大学先进驱动节能技术教育部工程研究中心,四川成都610031
2.电子科技大学空天科学技术研究院,四川成都610054)
摘要:针对应用于工程机械上某型号斜盘式轴向柱塞泉滑靴与柱塞组件及缸体试验岀现局部严重磨损及干涉故障,从滑靴与柱塞组
件及缸体的力平衡关系、滑靴与柱塞组件工艺与结构以及缸体配合间隙三个方面进行失效分析,在保证柱塞泵容积效率的前提下,提
出以下改进措施:优化设计了滑靴内外辅助支撑面与中心通油孔的固定节流器结构、利用回程盘与滑靴联动配合理论进行结构优化、
尝试对比应用薄壁空心柱塞,将这些措施运用于产品批量制造,取得较好效果。为斜盘式轴向柱塞泵的结构优化、提高效率和性能方面
提供实用经验,具有一定的综合效益和推广价值。
关键词:轴向柱塞泵;结构优化;工程机械;磨损
中图分类号:TH137.51文献标识码:A文章编号:1008-0813(2011)07-0022-05
Application Analysis and Improvement of Swash-plate Axial Piston Pump
ZHANG Zhi-peng LI Song-song
(1.New Drive Technology Center, Southwest Jiaotong University, Chengdu 610031, China;
2. Institute of Astronautics & Aeronautics, University of Electronic Science and Technology of
China, Chengdu 610054, China
Abstract: For the application of a certain type of swash-plate axial piston pump in engineering machinery which testing of sliding boots
and piston components and cylinder appears severe wear and tear of interference fault, according to the force balance relation between
sliding boots with piston components and the cylinder block, the technology and structure of Sliding boots and piston component and the
clearance of cylinder, failure analysis were done between above three aspects. During the guarantee of piston pump volume efficiency
put forward the following measures for improvement: Optimization design the bearing surface of sliding boots and the structure of restrictor,
structural optimized analysis by feedback of Baffle sliding boots, try to application and contrast thin-walled hollow piston, applying to
these measures to product, the effects achieve well. Meanwhile, it provides application foundation for the swash-plate axial piston
pump structure optimization, improving effici
erformance
Key Words axial piston pump; structural improvement; engineering mechanism; wear
0引言
最高转速:2200( r/min);额定工作压力:28(MPa)
某型号斜盘式轴向柱塞泵为应用于工程机被上的
峰值压力达:31(MPa);柱塞直径:25(mm)
B系列变量柱塞泵,如图1所示,它具有球面配油盘和
斜盘倾角:18(°)
可调斜盘。9个柱塞同心均布在柱塞缸内,与缸体一起
转动。因斜盘轴线与缸体轴线成18°夹角,缸体在传动
轴带动下作旋转运动时,柱塞则作直线往复运动。因
此,前半周吸油,后半周排油,起液压泵泉油作用。主要
技术参数
理论排量:120(mL/min);额定转速:1500(r/min)
收稿日期:2011-03-15
作者简介:张志鹏(1983-),男,硕土研究生,就读于西南交通大学先进驱
l-缸体2-柱塞3-回程盘4-滑靴
动节能技术教育部工程研究中心驱动技术与智能系统专业,现从事机电
5-止推块6-斜盘7-控制阀体
液一体化与驱动智能系统研究。
图1柱塞泵总体结构