公开(公告)号：US3768377A

公开(公告)日：1973-10-30

申请号：US3768377D

申请日：1972-01-14

Applicant: CATERPILLAR TRACTOR CO

Inventor： ENGEL W ,  VAN GAASBEEK P ,  NORICK W ,  GERMAIN J

IPC: F01B3/00 ,  F04B1/20 ,  F01B3/02 ,  F16C17/06 ,  F16C17/08

CPC classification number: F04B1/2085 ,  F01B3/0073 ,  F16C2360/00

Abstract: In axial-piston, hydraulic pumps and motors, the thrust loadings of the pistons on their bearing supports vary proportionally to pressures in the unit and also circumferentially around the bearing supports. By employing hydrostatic button bearings pressurized in ''''sets'''' around the bearing support with at least one set pressurized with the unit''s inlet pressure and another ''''set'''' pressurized by the unit''s outlet pressure, improved bearing performance is achieved. Also, certain surface configuration forming the sills and recesses of the individual buttons can enhance bearing performance.

Abstract translation: 在轴向活塞，液压泵和电动机中，活塞在其轴承座上的推力载荷与单元中的压力成正比，并且还在轴承支撑件周围周向变化。 通过采用以“套”方式加载的静压按钮轴承，其中至少一个设备以单元的入口压力加压，另一个由设备的出口压力加压的“套件”，可实现改进的轴承性能。 此外，形成各个按钮的窗台和凹部的某些表面构造可以增强轴承性能。

公开(公告)号：US3742818A

公开(公告)日：1973-07-03

申请号：US3742818D

申请日：1971-06-01

Applicant: CATERPILLAR TRACTOR CO

Inventor： ENGEL W

IPC: F04B1/047 ,  F04B53/14 ,  F01B13/04

CPC classification number: F04B53/14 ,  F04B1/047 ,  F05C2201/0478

Abstract: An improved radial piston pump or motor of the type wherein a rotor is rotatably mounted upon a pintle valve spindle eccentrically fixed within a cylindrical race, the rotor having hollow radial spokes communicated with passages of the pintle valve and reciprocably mounting hollow pistons thereon having shoes riding against the inside of the race. Each piston is of unique two-part construction preferably including a bronze shoe such that the race against which it rides may be advantageously of steel. In addition, the shoe of each piston is preferably provided with a flange which rides upon retaining protrusions of the race.

Abstract translation: 一种改进的径向活塞泵或电动机，其中转子可旋转地安装在偏心地固定在圆柱形座圈内的枢轴阀心轴上，转子具有中空的径向轮辐，与枢轴阀的通道连通，并且可往复运动地安装中空活塞， 反对比赛的内线。 每个活塞是独特的两部分构造，优选地包括青铜鞋，使得其骑乘的座圈可以有利地是钢。 此外，每个活塞的鞋子优选地设置有在保持该座圈的突起的情况下骑行的凸缘。