Simulation and Experiment Study of Hydraulic Buffer of Track Vehicle

Thinking of structure parameters, such as area of theittling orifice, fit clearance between piston spherical surface and cylinder wall, the model of hydraulic buffer used for track vehicle was built, dynamic characteristic and influencing factor of hydraulic buffer was simulated. A hydraulic buffer used in a type of track vehicle was test in hydraulic buffer performance rig. Results show hydraulic buffer characteristics are related to structural parameter itself and real impact load. Experiments display multiple impacts in real impact test reduce the nominal capacity, delay the dynamic response time of hydraulic buffer, and reduce the buffer effectiveness. Because of the return impact, the stiffness and pre-compression of return spring should be reduced as possible if satisfying the restore spring of hydraulic buffer.