• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2022, Vol. 58 ›› Issue (5): 212-222.doi: 10.3901/JME.2022.05.212

• 数字化设计与制造 • 上一篇    下一篇

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机电液混合驱动直线执行器构型设计与性能测试

乔舒斐, 郝云晓, 权龙, 葛磊, 夏连鹏   

  1. 太原理工大学新型传感器与智能控制教育部和山西省重点实验室 太原 030024
  • 收稿日期:2021-02-01 修回日期:2021-09-12 出版日期:2022-03-05 发布日期:2022-04-28
  • 通讯作者: 权龙(通信作者),男,1959年出生,博士,教授,博士研究生导师。主要研究方向为电液伺服及比例控制技术。E-mail:quanlong@tyut.edu.cn E-mail:quanlong@tyut.edu.cn
  • 作者简介:乔舒斐,男,1992年出生,博士研究生。主要研究方向为工程机械与液压系统节能控制。E-mail:2417000585@qq.com
  • 基金资助:
    国家自然科学基金资助项目(51875385,U1910211,51805349)。

Configuration Design and Performance Test of Electromechanical Hydraulic Hybrid Driving Linear Actuator

QIAO Shu-fei, HAO Yun-xiao, QUAN Long, GE Lei, XIA Lian-peng   

  1. Key Lab of Advanced Transducers and Intelligent Control System of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024
  • Received:2021-02-01 Revised:2021-09-12 Online:2022-03-05 Published:2022-04-28

摘要: 针对阀控液压缸节流损失大,电机械执行器带载能力弱的问题,通过液压缸活塞与电机械执行器螺母刚性连接的方式,将两类执行器集成为新型的机电液混合驱动直线执行器,主要由电机械驱动机构和液压驱动机构组成。电机械驱动机构用于执行器运动控制,液压驱动机构具有功率放大功能,用于提高执行器带载能力。研究中,活塞杆设计为中空结构用于长行程丝杠的安装,活塞上增设有通油孔用于油液的快速流通。通过密封设计,将活塞两侧设计为可充高压油液的容腔,采用ANSYS Workbench有限元软件对新型执行器零部件进行强度校核。最后,制造执行器试验样机并构建性能测试平台,测试结果表明,设计的机电液混合驱动直线执行器密封效果良好,运动过程中启制动平稳,具有良好的速度与位置控制特性;执行器液压驱动机构增力效果显著,且节流损失较小。所提机电液混合驱动直线执行器融合了液压驱动和电机械驱动的优点,为实现高能效高功率密度直线驱动提供了一种新的思路。

关键词: 机电液混合驱动直线执行器, 电机械执行器, 液压缸, 集成, 结构设计

Abstract: Aiming at the problems of the large throttling loss of valve controlled hydraulic cylinder and weak load carrying capacity of electro-mechanical actuator, the two kinds of actuators are integrated into a new electromechanical hydraulic hybrid driving linear actuator by rigidly connecting hydraulic cylinder piston with electro-mechanical actuator screw nut. The actuator is mainly composed of electro-mechanical driving mechanism and hydraulic driving mechanism. The electro-mechanical driving mechanism is used for motion control, and the hydraulic driving mechanism with power amplification function is used to improve the loading capacity of the actuator. In the research, the piston rod is designed as a hollow structure for the installation of the long-stroke screw. The piston is added to some oil holes for the rapid flow of oil. The two sides of the piston are designed to be filled with high-pressure oil through the seal design. The strength of the new actuator parts is checked by ANSYS Workbench finite element software. The actuator prototype is manufactured, and the performance test platform is built. The test results show that the designed actuator has good sealing effect, smooth starting and braking, and good velocity and position control characteristics. The hydraulic driving mechanism has obvious force increasing effect and less throttling loss. The proposed actuator combines the advantages of hydraulic drive and electro-mechanical drive, which provides a new idea for realizing high energy efficiency and power density linear drive.

Key words: electromechanical hydraulic hybrid driving linear actuator, electro-mechanical actuator, hydraulic cylinder, integration, structure design

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