利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

28 条记录 (耗时 0.013 秒)

    Hydraulic motor having a hydraulic lock control drive pin
    22.
    发明授权
    Hydraulic motor having a hydraulic lock control drive pin 失效
    液压马达具有液压锁定驱动针

    公开(公告)号：US3824899A

    公开(公告)日：1974-07-23

    申请号：US39038673

    申请日：1973-08-22

    申请人： GEN MOTORS CORP

    发明人： DZIOBA D

    IPC分类号： F03C1/34 ,  F01B13/06

    CPC分类号： F03C1/0435

    摘要： A radial piston hydraulic motor in which a valve, rotatably driven by the motor output, through a drive pin, provides timed fluid flow to and from the motor cylinders relative to rotation of the motor output. If the valve should seize in the cylinder housing, the pin will shear, opening a passage therein, to provide a fluid flow connection between the high pressure side of the motor and the motor case to prevent a hydraulic lock from forming in the cylinders.

    摘要翻译： 一种径向活塞液压马达，其中由马达输出的可旋转驱动的阀通过驱动销提供相对于马达输出的旋转而向马达缸和/或从马达缸提供的定时流体流。 如果阀门应在气缸壳体内卡住，则销子将剪切，打开其中的通道，以在马达的高压侧和马达壳体之间提供流体流动连接，以防止在液压缸中形成液压锁。

    Radial piston fluid pressure motor
    23.
    发明授权
    Radial piston fluid pressure motor 失效
    径向活塞式液压马达

    公开(公告)号：US3699848A

    公开(公告)日：1972-10-24

    申请号：US3699848D

    申请日：1971-02-10

    申请人： CAM ROTORS LTD

    发明人： PRENDERGAST CHARLES SCOTT

    IPC分类号： F03C1/24 ,  F03C1/28 ,  F03C1/30 ,  F03C1/34 ,  F03C1/40 ,  F01B13/06

    CPC分类号： F03C1/2407 ,  F03C1/0406 ,  F03C1/0409 ,  F03C1/0435 ,  F03C1/046

    摘要： A hydraulic pump or motor has a central cylinder block formed with eight cylinders of rectangular cross-section. Each containing a piston which projects radially outwards from the cylinder block, and maintains contact with a cam surface formed on the inner surface of a surrounding cam ring. Each piston comprises a rectangular shoe which is a sliding fit in its cylinder and which carries a roller on a partly circular seating which extends over the axial length of the shoe, the roller following the cam surface. The seating is relieved to provide a space in which oil pressure can develop and substantially balance the reactive force between the roller and the cam. As the cylinder block rotates the pistons reciprocate within their cylinders as the rollers follow the cam surface. Hydraulic pressure at the bottom of a shoe is normally used to maintain contact between a piston and the cam ring, but springs may also be used. The space at the bottom of each piston shoe communicates alternately with inlet and outlet ports in a member which is rigid with the cam ring and which may be a plate with face ports or a cylindrical pintle with radial ports. In one example the cam surface is formed so that each piston performs six cycles of reciprocation per revolution, the nature of each cycle being such that the total displacement of the unit remains uniform at a uniform rate of rotation and the radial pressure reaction between the cam ring and the cylinder block is always balanced. In another example the form of the cam ring is in two generally semi-cylindrical parts which are movable and which can be jointly adjusted radially in relation to the central axis to vary the length of stroke of the pistons. One kind of fluid pressure unit has a rotor and a coaxial stator one of which surrounds the other and is formed with an internal cam surface while the inner member is formed with two or more cylinders arranged substantially radially each containing a piston which has an end projecting from the cylinder against the cam surface and which slides to and fro in the cylinder as the rotor rotates in use. Such units have external outlet and inlet connections with which each cylinder communicates in the angular positions of the rotor in which the corresponding piston slides respectively inwards and outwards within that cylinder. Either the inner or the outer member may be the rotor. Although it is possible to use these units as motors or pumps, one of their main application is as relatively low speed, high torque motors. In this application their weight and size for a given output torque compare very favorably with those of a highspeed motor, electric or hydraulic, combined with reduction gearing, which is the conventional alternative.

    摘要翻译： 液压泵或电动机具有形成有八个矩形横截面的圆柱体的中心气缸体。 每个活塞包含从气缸体径向向外突出的活塞，并且与形成在周围凸轮环的内表面上的凸轮表面保持接触。 每个活塞包括矩形鞋，其在其圆柱体中滑动配合，并且在滚子的轴向长度上延伸的部分圆形座上承载滚子，滚子跟随凸轮表面。 释放座椅以提供可以产生油压的空间，并且基本平衡辊和凸轮之间的反作用力。 随着气缸体的旋转，当滚轮跟随凸轮表面时，活塞在其气缸内往复运动。 鞋底部的液压通常用于保持活塞和凸轮环之间的接触，但也可使用弹簧。 每个活塞杆底部的空间与与凸轮环刚性的构件中的入口和出口交替地连通，并且其可以是具有面孔的板或具有径向端口的圆柱形枢轴。