Abstract
Axial-piston hydraulic swash plate machines are widely applied in positive displacement hydraulic drives of various purposes. Such drives are highly energy-intensive and have a relatively small control range due to the presence of a large dead-band, which limits their use in reverse action systems. To reduce the dead-band, an improved axial-piston hydraulic swash plate machine was designed. The decrease of the dead-band is achieved by reducing the friction forces in the piston mechanism. This article presents the results of comparative tribological tests of a standard and improved piston mechanisms. The experimental research was conducted in terms of reducing the friction forces in the piston mechanism and their effect on the moment of starting of the hydraulic machine. It was revealed that the use of the improved piston mechanism allows to increase the useful force of the piston up to 20 % in the motor mode and to reduce the dead band by 1.6 times when switching to the pump mode.
Highlights
Axial-piston hydraulic swash plate machines are used in hydraulic drives, which have high requirements for energy consumption and fast response
The use of the improved piston mechanism reduces the friction forces in the motor mode by 798 N at the piston chamber pressure value of 20 MPa, which leads to an increase in the useful force produced by the piston mechanism by 16.7 %;
The use of the improved piston mechanism with hydrostatic bearing reduces the friction forces in the motor mode by 941 N at the piston chamber pressure value of 20 MPa, which leads to an increase in the useful force produced by the piston mechanism by 20 %;
Summary
Axial-piston hydraulic swash plate machines are used in hydraulic drives, which have high requirements for energy consumption and fast response. This leads to the fact that the force produced by the piston in the bent-axis machine in comparison with the swash plate machine is converted into a much larger torque.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IOP Conference Series: Materials Science and Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
