PISTON SHOE AND A SPACER RING FOR REDUCING A RETAINER FRICTION CAPABLE OF REVOLVING AT A HIGH SPEED BY REDUCING A FRICTION

摘要

PURPOSE: A piston shoe and a spacer ring for reducing a retainer friction is provide to revolve the hydraulic piston pump at a high speed by reducing the friction which is generated in the irregular relative motion between a piston shoe and a retainer in the hydraulic piston pump.;CONSTITUTION: A piston shoe and a spacer ring for reducing a retainer friction comprises a cylinder barrel, a front housing, a rear housing, a piston(40), a driving shaft, a retainer, and a yoke. The cylinder barrel has a plurality of cylinder bores. The front housing and rear housing are installed in the front and rear of the cylinder barrel. A plurality of pistons is inserted in the inner side of the cylinder bore. A plurality of piston has a shoe. One edge of the driving shaft passes through the front housing and the other end edge is inserted into the center of the cylinder barrel. The retainer forms a through-hole in the corresponding location in which the cylinder bore is formed. The yoke is installed between the front housing and retainer, and supports the end of the shoe. The spacer ring(42) has a relatively light material compared to the shoe and retainer.;COPYRIGHT KIPO 2012