吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (5): 1468-1473.doi: 10.13229/j.cnki.jdxbgxb201505014

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Overturning moment of cylinder of balanced two-ring axial piston pump

DENG Hai-shun, HUANG Kun, WANG Chuan-li, LI Yong-mei   

  1. Department of Mechanical Engineering, Anhui University of Science and Technology, Huainan 232001, China
  • Received:2014-02-21 Online:2015-09-01 Published:2015-09-01

Abstract: The cylinder stress state of the balanced two-ring axial piston pump is analyzed, and a calculation formula of the overturning moment of the cylinder is deduced. Also the calculation formula to balance the axial hydraulic pressure of the cylinder and the port plate is obtained and program is given. When the numbers of the pistons inside and outside are both even or both odd, the dynamic curve of the overturning moment of the cylinder as a function of its turning angle is drawn using software Matlab. The results show that, when the numbers of pistons inside and outside are both even or both odd, the inside and outside overturning moments of the balanced two-ring axial piston pump can partially or even completely counteract each other. So the overturning moment of the cylinder will significantly reduce and its fluctuation period will remain the same. When the numbers of pistons inside and outside are both odd, the overturning moment will be smaller than that the numbers of pistons inside and outside are both even.

Key words: fluid power transmission and control, the balanced two-ring axial piston pump, cylinder, equilibrium, overturning moment

CLC Number: 

  • TH322
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