斜轴柱塞式4口液压变压器及其变压比特性

doi:10.3901/JME.2021.02.247

机械工程学报 ›› 2021, Vol. 57 ›› Issue (2): 247-255.doi: 10.3901/JME.2021.02.247

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斜轴柱塞式4口液压变压器及其变压比特性

周连佺¹, 刘强¹, 姜继海²

1. 江苏师范大学机电工程学院徐州 221116;
2. 哈尔滨工业大学机电工程学院哈尔滨 150080

收稿日期:2020-06-03 修回日期:2020-12-01 出版日期:2021-01-20 发布日期:2021-03-15
通讯作者: 刘强(通信作者),男,1994年出生。主要从事液压传动与节能方面的研究。E-mail:1269064265@qq.com
作者简介:周连佺,男,1966年出生,博士,教授,高级工程师。主要从事液压伺服和比例控制、液压工程机械节能、高端工业液压试验等方面的科研和教学工作。E-mail:zhoulianquan@163.com
基金资助:
国家自然科学基金资助项目（51775131）。

Oblique Axis Piston Four-port Hydraulic Transformer and Its Pressure Transformation Ratio Characteristics

ZHOU Lianquan¹, LIU Qiang¹, JIANG Jihai²

1. School of Mechatronic Engineering, Jiangsu Normal University, Xuzhou 221116;
2. School of Mechanical and Electrical Engineering, Harbin Institute Technology, Harbin 150080

Received:2020-06-03 Revised:2020-12-01 Online:2021-01-20 Published:2021-03-15

摘要/Abstract

摘要： 针对现有新型液压变压器在实现变压的同时其进出口流量也会随之变化的问题，提出一种斜轴柱塞式4口液压变压器，它能够在不改变原有液压系统的情况下，回收因节流浪费的压差能、制动动能及重力势能。通过建立其变压比数学模型和分析发现，影响变压比特性的主要因素是配流盘控制角、缸体主轴转速以及回收压差，根据其所实现的功能，设计并试制出原型机，搭建4口液压变压器试验装置；通过试验对该变压器的变压比特性进行试验验证。研究结果表明，油口A和B等流量相当于一台液压马达，油口O和T等流量相当于一台液压泵，可通过改变配流盘控制角来改变其变压比；当配流盘控制角度不变时，随着缸体转速的升高或回收压差的降低，变压比会随之降低。所得结论不仅使4口液压变压器的理论基础更加完善，对其应用具有重要的参考和指导意义。

关键词: 四配流口, 液压变压器, 变压比, 理论与试验, 节能

Abstract: Aiming at the problem that when the existing new hydraulic transformer realizes the function of pressure transformation, the inlet and outlet flow also changes, the oblique axis piston four-port hydraulic transformer(FHT), which can be directly connected to the original hydraulic system, is proposed, it can recover differential pressure energy, braking energy and gravitational potential energy without changing the original hydraulic system. The mathematical model of the transformation ratio is established and analyzed, it is found that the main factors affecting the pressure transformation ratio characteristics are the control angle of the valve plate, the speed of the cylinder main shaft and the recovery pressure difference. Then, according to the function of FHT, the prototype is designed and prototyped, and the four-port hydraulic transformer test device is built in the laboratory. The theoretical model of the transformation ratio is verified by experiments. The results show that the flow rate of port A is the same as port B, the combination of port A and B is equivalent to a hydraulic motor, the flow rate of port O is the same as port T, and the combination of port O and T is equivalent to a hydraulic pump, and the pressure ratio can be changed by adjusting the control angle of the valve plate. When the control angle of the valve plate is constant, the transformation ratio decrease as the cylinder speed increases or the recycling pressure difference decreases. The results not only lay a foundation for the further perfection of the theory of FHT, but also have important reference and guiding significance for its application.

Key words: four distribution ports, hydraulic transformer, pressure ratio, theoretical and experimental, energy saving

中图分类号:

TH137

周连佺, 刘强, 姜继海. 斜轴柱塞式4口液压变压器及其变压比特性[J]. 机械工程学报, 2021, 57(2): 247-255.

ZHOU Lianquan, LIU Qiang, JIANG Jihai. Oblique Axis Piston Four-port Hydraulic Transformer and Its Pressure Transformation Ratio Characteristics[J]. Journal of Mechanical Engineering, 2021, 57(2): 247-255.

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斜轴柱塞式4口液压变压器及其变压比特性

Oblique Axis Piston Four-port Hydraulic Transformer and Its Pressure Transformation Ratio Characteristics

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