Dynamic Characteristics of ‘Floating’ Valve Plate for Internal Curve Hydraulic Motor
The internal curve hydraulic motor valve plate has a clearance self-compensation performance that can effectively improve the working efficiency of the valve plate. However, the dynamic characteristics of the valve plates require further investigation. This study considers the self-compensating ‘flo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-07-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/13/7/307 |
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| author | Wei Ma Guolai Yang Wenbin Cao Shaohui Yao Guixiang Bai Chuanchuan Cao Shoupeng Song |
| author_facet | Wei Ma Guolai Yang Wenbin Cao Shaohui Yao Guixiang Bai Chuanchuan Cao Shoupeng Song |
| author_sort | Wei Ma |
| collection | DOAJ |
| description | The internal curve hydraulic motor valve plate has a clearance self-compensation performance that can effectively improve the working efficiency of the valve plate. However, the dynamic characteristics of the valve plates require further investigation. This study considers the self-compensating ‘floating’ valve plate as the research object, proposes a dynamic characteristic analysis method for the internal curve hydraulic motor valve plate, and explores the changing rule of oil film thickness and surplus pressing force of the valve plate. The results showed that an increase in the inlet pressure and oil temperature led to an increase in the thickness of the oil film, and the amplitude of the oil film thickness was larger, whereas the rotational speed of the oil film thickness of the valve plate pair was not obvious. When the inlet pressure is lower than 8 MPa, and the oil temperature is in the range of 20–30 °C, the oil film is mainly subjected to the squeezing effect of the valve plate, and the displacement of the valve plate decreased with increasing rotational speed. The inlet pressure is the main factor affecting the displacement of the ‘floating’ valve plate, and when the inlet pressure reaches 8.7 MPa, the valve plate is in hydrostatic balance support. In addition, the surplus pressing force coefficient of the valve plate decreased with increasing inlet pressures. This study provides theoretical support for the design of variable pressing force valve plates for internal curve hydraulic motors by investigating the dynamic characteristics of “floating” valve plates. |
| format | Article |
| id | doaj-art-aae756638fe2457783ae6b8e795fdd0e |
| institution | DOAJ |
| issn | 2075-4442 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj-art-aae756638fe2457783ae6b8e795fdd0e2025-08-20T03:08:09ZengMDPI AGLubricants2075-44422025-07-0113730710.3390/lubricants13070307Dynamic Characteristics of ‘Floating’ Valve Plate for Internal Curve Hydraulic MotorWei Ma0Guolai Yang1Wenbin Cao2Shaohui Yao3Guixiang Bai4Chuanchuan Cao5Shoupeng Song6College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaCollege of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaCollege of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaChina Machinery Industry Construction Group Sichuan Branch, Chengdu 610200, ChinaCollege of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaCollege of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaCollege of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaThe internal curve hydraulic motor valve plate has a clearance self-compensation performance that can effectively improve the working efficiency of the valve plate. However, the dynamic characteristics of the valve plates require further investigation. This study considers the self-compensating ‘floating’ valve plate as the research object, proposes a dynamic characteristic analysis method for the internal curve hydraulic motor valve plate, and explores the changing rule of oil film thickness and surplus pressing force of the valve plate. The results showed that an increase in the inlet pressure and oil temperature led to an increase in the thickness of the oil film, and the amplitude of the oil film thickness was larger, whereas the rotational speed of the oil film thickness of the valve plate pair was not obvious. When the inlet pressure is lower than 8 MPa, and the oil temperature is in the range of 20–30 °C, the oil film is mainly subjected to the squeezing effect of the valve plate, and the displacement of the valve plate decreased with increasing rotational speed. The inlet pressure is the main factor affecting the displacement of the ‘floating’ valve plate, and when the inlet pressure reaches 8.7 MPa, the valve plate is in hydrostatic balance support. In addition, the surplus pressing force coefficient of the valve plate decreased with increasing inlet pressures. This study provides theoretical support for the design of variable pressing force valve plates for internal curve hydraulic motors by investigating the dynamic characteristics of “floating” valve plates.https://www.mdpi.com/2075-4442/13/7/307internal curve hydraulic motor‘floating’ valve platedynamic characteristicsfilm thicknesssurplus pressing force |
| spellingShingle | Wei Ma Guolai Yang Wenbin Cao Shaohui Yao Guixiang Bai Chuanchuan Cao Shoupeng Song Dynamic Characteristics of ‘Floating’ Valve Plate for Internal Curve Hydraulic Motor Lubricants internal curve hydraulic motor ‘floating’ valve plate dynamic characteristics film thickness surplus pressing force |
| title | Dynamic Characteristics of ‘Floating’ Valve Plate for Internal Curve Hydraulic Motor |
| title_full | Dynamic Characteristics of ‘Floating’ Valve Plate for Internal Curve Hydraulic Motor |
| title_fullStr | Dynamic Characteristics of ‘Floating’ Valve Plate for Internal Curve Hydraulic Motor |
| title_full_unstemmed | Dynamic Characteristics of ‘Floating’ Valve Plate for Internal Curve Hydraulic Motor |
| title_short | Dynamic Characteristics of ‘Floating’ Valve Plate for Internal Curve Hydraulic Motor |
| title_sort | dynamic characteristics of floating valve plate for internal curve hydraulic motor |
| topic | internal curve hydraulic motor ‘floating’ valve plate dynamic characteristics film thickness surplus pressing force |
| url | https://www.mdpi.com/2075-4442/13/7/307 |
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