公开(公告)号：US5076377A

公开(公告)日：1991-12-31

申请号：US535222

申请日：1990-06-08

Applicant: Hugh I. Frazer

Inventor： Hugh I. Frazer

IPC: B62D11/10

CPC classification number: B62D11/10

Abstract: A transmission for a skid-steering vehicle having two tracks or two sets of wheels in which power is transferred from one or more prime movers to the tracks or wheels through a gearbox is proportional to the sum of the input speeds and the difference between the output speeds is proportional to the difference between the input speeds, the internal gearing of the gearbox consisting of two only differential gearing sets each comprising three elements within connections between two of the elements of one of the differential set with two of the elements of the other differential set. A fully hydraulic drive is preferably provided between the prime mover and hydraulic motors driving the gearbox.

Abstract translation: 用于具有两个轨道或两组车轮的滑行转向车辆的变速器，其中动力通过齿轮箱从一个或多个原动机传送到轨道或车轮，与输入速度和输出之间的差值之和成正比 速度与输入速度之间的差异成正比，齿轮箱的内齿轮由两个唯一的差速齿轮组组成，每个差速齿轮组包括三个元件，其中差分组合中的两个元件的两个元件之间的连接中的三个元件与另一个差速器 组。 优选地，在驱动变速箱的原动机和液压马达之间设置全液压驱动装置。

公开(公告)号：US4540345A

公开(公告)日：1985-09-10

申请号：US498453

申请日：1983-05-26

Applicant: Hugh I. Frazer

Inventor： Hugh I. Frazer

IPC: F04B1/24 ,  F04B1/20 ,  F04B53/10 ,  F16K15/16 ,  F04B1/12 ,  F01B13/04

CPC classification number: F04B1/2042 ,  F04B53/1062

Abstract: A hydraulic pump for liquids of the type comprising a body, a cylinder rotor surrounded by and mounted in an external support, the body having an inlet port and an outlet port for the liquid to be pumped and the rotor carrying a plurality of equiangularly spaced cylinders which are disposed parallel to or radially extending from the rotor axis, pistons in the cylinders being caused to reciprocate as the rotor is rotating, by cam means such as a surface inclined to the rotor axis or by inclining the rotor axis itself in order to pump liquid. As the rotor rotates the cylinders are moved sequentially past the inlet port as the liquid is drawn into the cylinders and sequentially past the outlet port as the liquid is forced out of the cylinders by the actions of the pistons. As each cylinder passes from the inlet port to the outlet port a precompression zone is provided in which there is a hole communicating with the high pressure outlet port, the hole being closed by a valve which opens when the pressure in the cylinder reaches the pressure in the outlet port. The invention is characterized by the provision of a flat spring valve to control the opening and closing of the hole, the flat spring valve being preferably of a stiffness such that it substantially closes under its own resilience in the absence of a pressure differential across it and consists preferably of a central portion from which two or three arms extend radially, the arms being clamped at their extremities between faces and parts of the hydraulic pump.

Abstract translation: 一种用于液体的液压泵，其类型包括主体，由外部支撑件包围并安装在其上的气缸转子，所述主体具有用于待泵送的液体的入口和出口，并且转子承载多个等角度间隔的气缸 其平行于或从转子轴线径向延伸，使得气缸中的活塞通过诸如与转子轴线倾斜的表面的凸轮装置或通过使转子轴线本身倾斜以使其泵送 液体。 当转子旋转时，当液体被活塞的动作迫使液体被迫离开气缸时，随着液体被吸入气缸中并且顺序通过出口，气缸顺序地移动通过入口。 当每个气缸从入口通过出口时，提供一个预压缩区，其中有一个与高压出口连通的孔，该孔被一个阀门关闭，当气缸中的压力达到压力时打开 出口口。 本发明的特征在于提供一种用于控制孔的打开和关闭的扁平弹簧阀，该弹簧阀优选地具有刚度，使得其在其没有压差的情况下在其自身的弹性下基本上封闭， 优选地由两个或三个臂径向延伸的中心部分组成，臂被夹在液压泵的表面和部件之间的末端。

公开(公告)号：US4540221A

公开(公告)日：1985-09-10

申请号：US498454

申请日：1983-05-26

Applicant: Hugh I. Frazer

Inventor： Hugh I. Frazer

IPC: F04B1/20 ,  F04B1/32 ,  F16C32/06

CPC classification number: F16C32/0648 ,  F04B1/2085 ,  F04B1/328 ,  F16C32/0666 ,  F16C32/0692

Abstract: A hydrostatic pad or slipper bearing that is hydrostatically balanced to provide a substantially frictionless bearing with negligible fluid leakage, for supporting a moving part, in which there is a stationary housing in a cylindrical recess in which is mounted a bearing pad movable in the recess and surrounded by a liquid seal, the outward face of the pad being shaped to bear on the moving part to be supported and having a recessed area in its outward face which is defined by sealing land. A passage through the pad provides a communication between the inward face of the pad and the recessed area. Within the housing is a cylindrical cavity containing a valve assembly which is connected in a manner that is free of back lash to the pad so that the valve moves with the pad. The cylindrical cavity is supplied with liquid under pressure the entry of which is controlled by the valve and also with a passage leading to an area of lower of pressure. The novel feature of the construction lies in the fact that the cylindrical recess and the pad are of substantially uniform diameter through the lengths so that the pad is supported against lateral movement by the wall of the recess at a point close to the moving part and in that the effective hydrostatic area of the inward face of the pad is substantially equal to the effective hydrostatic area of the outward face of the pad plus the effective hydrostatic area of the valve subject to the pressure acting on the inward face of the pad, the valve assembly being hydrostatically balanced within itself with respect to the input pressure so that the whole pad and valve assembly are hydrostatically balanced. This arrangement guards against the leading edge of the pad digging into the moving part and also permits the use of a large diameter poppet valve.

Abstract translation: 静压垫或滑动轴承，其静压平衡以提供具有可忽略的流体泄漏的基本上无摩擦的轴承，用于支撑移动部件，其中在圆柱形凹部中存在固定的壳体，其中安装有可在凹部中移动的轴承垫， 由液体密封件包围，垫的外表面被成形为承载在待支撑的移动部件上，并且在其外表面具有由密封区限定的凹陷区域。 通过垫的通道提供垫的内表面和凹陷区域之间的连通。 在壳体内部是圆柱形腔体，其包含阀组件，该阀组件以无衬垫的方式连接，使阀门与垫片一起移动。 在压力下为圆柱形空腔供应液体，其中阀门的入口由阀门控制，还有通向压力较低区域的通道。 该结构的新颖特征在于，圆柱形凹部和垫片通过长度具有基本均匀的直径，使得垫片在靠近移动部件的位置处被凹部的壁支撑成横向移动，并且在 垫的内表面的有效静水面积基本上等于垫的外表面的有效静水面积加上受到作用在垫的内表面上的压力的阀的有效静液压面积，阀 组件在其自身内相对于输入压力进行流体静力平衡，使得整个衬垫和阀组件被水力平衡。 这种布置防止了垫片的前缘进入移动部件，并且还允许使用大直径提升阀。