Research On Virtual Prototype And Valve Plate Structure Of Multi-acting Internal Curve Hydraulic Motor

Hydraulic transmission has the advantages of light weight per unit power,stable operation,convenient operation and speed regulation,easy realization of overload protection and long service life.It is widely used in mechanical equipment,and low-speed and high-torque hydraulic motors are one of the core components of hydraulic transmission equipment..As a kind of low-speed and high-torque hydraulic motor,the multi-acting internal curve radial piston motor has the advantages of small size,large output torque,and easy installation.It is widely used in various construction machinery.However,due to technical barriers,my country’s multiacting internal curve radial piston motors are still in a large number of imports.In order to speed up the development of multi-acting internal curve radial piston motor,the establishment of an integrated virtual prototype of multi-acting internal curve radial piston motors can not only effectively shorten the research and development Cycle and reduce research and development funds,and can optimize the performance of the developed multi-acting internal curve radial piston motor,and can also provide a certain reference for the calibration of the experimental parameters of the physical prototype.The first chapter briefly describes the research background of low-speed and high-torque hydraulic motors and my country’s urgent demand for high-performance inner-curve hydraulic motors;introduces the development status of multi-acting internal curve radial piston motors at home and abroad;briefly describes the virtual prototype technology and Its application.The second chapter,theoretically analyzes the force state of the plunger roller assembly of the multi-acting inner curve liquid motor in detail.According to the movement of the plunger assembly and the Hertzian contact theory,the equation of the equal contact stress curve is derived;the equation is analyzed in detail The effect of the initial value on the performance of the equal contact stress curve,a three-dimensional model of the stator ring of a ten-acting sixteen plunger hydraulic motor is drawn.The third chapter uses ADAMS software to establish a multi-body dynamic model of a ten-acting sixteen plunger hydraulic motor.AMESim software establishes the hydraulic model of the motor distribution module,volume module and leakage module,and then creates a multiacting internal curve radial piston motor through the corresponding interface.The integrated virtual prototype of the motor verifies the rationality of the virtual prototype.The actual radial movement of the plunger assembly,the pressure change in the plunger cavity,the instantaneous output torque of the motor,and the instantaneous inlet oil flow rate are obtained through cosimulation.Finally,the output torque and the output torque of the oil to the motor at different air contents are analyzed.The influence of the input flow.In Chapter 4,in order to reduce the output torque pulsation and input oil flow pulsation of the multi-acting internal curve radial piston motor,it is proposed to add U-shaped damping grooves,triangular damping grooves and a valve plate combined with the damping groove structure.The simulation analysis shows that the reasonable addition The damping groove structure can improve the pressure change in the plunger cavity,the output torque pulsation characteristics of the motor,the input flow pulsation characteristics and the anti-interference ability,and finally can achieve the effects of vibration reduction,noise reduction,and anti-interference.