Output speed and flow of double-acting double-stator multi-pumps and multi-motors  

作　　者：De-sheng WEN Zhi-li WANG Jun GAO Yong ZHANG Shi-jun LV Tetsuhiro TSUKIJI 

机构地区：[1]College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China [2]College of Engineering and Applied Science, Sophia University, Tokyo 102-8554, Japan

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2011年第4期301-309,共9页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project(No.50975246)supported by the National Natural Science Foundation of China

摘　　要：The primary focus of this study was to investigate a series of novel motors and pumps,based on a new type of structure called double-stator.The double-stator structure can be used as pump or motor just based on the application requirements.A certain amount of pumps or motors can be formed in one shell,and these sub-pumps or sub-motors can work alone or be combined without influence on each other.So this kind of double-stator pump(motor) is called a multi-pump(multi-motor).Through the analysis of multifarious connection modes of the double-acting double-stator multi-pumps and multi-motors,the mathematical expressions of the output flow rate and the rotational speed are acquired.The results indicate that a quantity of different flow rates can be provided by one fixed-displacement multi-pump under the condition of unalterable driven speed by electromotor.Likewise,when supplied by settled input flow,without complex variable mechanism,the functions of double-speed,multiple-speed,and even differential connection can be obtained by employing the use of a double-stator multi-motor.The novel hydraulic transmission is made of such a double-stator multi-pump and multi-motor,and has broad application prospects.The primary focus of this study was to investigate a series of novel motors and pumps, based on a new type of structure called double-stator. The double-stator structure can be used as pump or motor just based on the application requirements. A certain amount of pumps or motors can be formed in one shell, and these sub-pumps or sub-motors can work alone or be combined without influence on each other. So this kind of double-stator pump （motor） is called a multi-pump （multi-motor）. Through the analysis of multifarious connection modes of the double-acting double-stator multi-pumps and multi-motors, the mathematical expressions of the output flow rate and the rotational speed are acquired. The results indicate that a quantity of different flow rates can be provided by one fixed-displacement multi-pump under the condition of unalterable driven speed by electromotor. Likewise, when supplied by settled input flow, without complex variable mechanism, the functions of double-speed, multiple-speed, and even differential connection can be obtained by employing the use of a double-stator multi-motor. The novel hydraulic transmission is made of such a double-stator multi-pump and multi-motor, and has broad application prospects.

关 键 词：Multi-pumps Multi-motors Flow rate Rotational speed Hydraulic transmission Differential motor 

分 类 号：TH137[机械工程—机械制造及自动化]