Experimental study on the effect of rubber isolator on the vibration of piston pump

Rubber isolator commonly used as support of piston pump, and the stiffness and damping nonlinearity of rubber isolator will significantly affect the vibration characteristics of piston pump. In this paper, two kinds of rubber isolators were selected, and the effect of pressure excitation amplitude on the vibration isolation effect of rubber isolator under different pressure conditions is studied. The vibration of piston pump and the base with different rubber isolators are further measured, and the vibration isolation effect of rubber isolators under different discharge pressure of piston pump is calculated. Experimental results show that: with the increase of pressure, the vibration of the piston pump and the base increases, on the contrary, the vibration isolation effect decreases. The vibration of the pump and the base with rubber isolator BE400 is lower than that of BH400. This study can contribute to the vibration and noise control of piston pump in engineering.