Hydrostatic continuously variable transmission
    4.
    发明授权
    Hydrostatic continuously variable transmission 失效
    静液压无级变速器

    公开(公告)号:US4827721A

    公开(公告)日:1989-05-09

    申请号:US112329

    申请日:1987-10-22

    摘要: In a hydrostatic continuously variable transmission comprising a swashplate type hydraulic pump having a pump swashplate and annularly arranged pump plungers whose suction and discharge strokes are provided by the pump swashplate, a swashplate type hydraulic motor having a motor swashplate and annularly arranged motor plungers whose expansion and shrinkage strokes are provided by the motor swashplate, and a hydraulic closed circuit formed between the hydraulic pump and motor, the middle point of a discharge region of the hydraulic pump is angularly delayed at a given angle in a direction of rotation of the hydraulic pump relative to a tilting axis of the pump swashplate, and/or the middle, point of an expansion region of the hydraulic motor is angularly advanced at a given angle in a direction of rotation of the hydraulic motor relative to a tilting axis of the motor swashplate. Further, a suction region of the hydraulic pump is set at an angle larger than that of a discharge region thereof, and/or a shrinkage region of the hydraulic motor is set at an angle larger than that of an expansion region thereof.

    摘要翻译: 一种液压无级变速器,包括具有泵斜盘的斜盘式液压泵和环形布置的泵柱塞,其抽吸和排出行程由泵斜盘提供;斜盘式液压马达,其具有马达斜盘和环形排列的马达柱塞,其膨胀和 收缩行程由电动斜盘提供,液压泵与电动机之间形成液压闭合回路,液压泵排出区域的中点以液压泵相对转动方向的角度延迟给定角度 和/或液压马达的膨胀区域的中间点在液压马达相对于马达斜盘的倾斜轴的旋转方向上以给定的角度成角度地前进。 此外,液压泵的吸入区域被设定为大于其排出区域的角度,和/或液压马达的收缩区域被设定为大于其膨胀区域的角度。

    Hydrostatic continously variable transmission with adjustable clutch
valve
    7.
    发明授权
    Hydrostatic continously variable transmission with adjustable clutch valve 失效
    具有可调节离合器阀的静态可变变速器

    公开(公告)号:US5065578A

    公开(公告)日:1991-11-19

    申请号:US422807

    申请日:1989-10-17

    摘要: In a hydrostatic continuously variable transmission in which a clutch valve capable of operating between a clutch-on position for setting a hydraulic closed circuit between a hydraulic pump and a hydraulic motor to a hydraulic transmitting state and a clutch-off position for setting the hydraulic closed circuit to a hydraulic transmission cutting-off state is connected to the hydraulic closed circuit, a pressure bearing chamber for urging the clutch valve to the clutch-off position, and a pressure regulating spring for urging the valve to the clutch-on position are provided in the clutch valve, and a clutch controller for regulating the set load of the pressure regulating spring is connected to the pressure regulating spring. Thus, the degree of the hydraulic transmission between the pump and the motor can be controlled as desired without influence of the viscous change of a working oil. The clutch valve is disposed at one axial end of a transmission shaft.

    摘要翻译: 在静液压无级变速器中,其中能够在用于将液压泵和液压马达之间的液压闭合回路设定到液压传动状态的离合器接合位置和用于设定液压闭合的离合器关闭位置之间操作的离合器阀 连接到液压传动切断状态的电路连接到液压闭合回路,用于将离合器阀推动到离合器关闭位置的压力承受室,以及用于将阀推动到离合器接合位置的压力调节弹簧 在离合器阀中,并且用于调节压力调节弹簧的设定负载的离合器控制器连接到压力调节弹簧。 因此,可以根据需要控制泵和马达之间的液压传动的程度,而不受工作油的粘性变化的影响。 离合器阀设置在传动轴的一个轴向端。

    Swash plate type hydraulic unit
    8.
    发明授权
    Swash plate type hydraulic unit 失效
    斜盘式液压单元

    公开(公告)号:US06283009B1

    公开(公告)日:2001-09-04

    申请号:US09485694

    申请日:2000-02-25

    IPC分类号: F01B300

    摘要: In a swash plate type hydraulic unit for use as a swash plate type hydraulic pump and a hydraulic motor, a plurality of block plates 41 to 45 being divided at split planes extending orthogonal to a cylinder block axis X are soldered to one another to form a cylinder block 4. Inlet holes 25i and 39i for supporting plungers 27 and 41 slidably therein are formed in an inlet-side one of the block plates 41, 42; 44, 45 located close to plunger swash plates 9a and 19a, while in remaining inner-side ones of the block plates 43 to 45; 41 to 43 are formed inner holes 25o and 39o of a diameter larger than that of the inlet holes 25i and 39i, the inner holes 25o and 39o each defining an oil chamber to which the outer peripheral surface of the associated plunger 27, 41 faces. With this arrangement, a cylinder block structure superior in mass-productivity is provided.

    摘要翻译: 在用作斜盘式液压泵和液压马达的斜盘式液压单元中,在垂直于气缸体轴线X延伸的分裂面处分割多个块板41至45,以彼此焊接形成 在块板41,42的入口侧形成有用于可滑动地支撑柱塞27和41的入口孔25i和39i; 44,45位于柱塞斜盘9a和19a附近,同时在块板43至45的剩余内侧中; 如图41至图43所示,形成直径大于入口孔25i和39i直径的内孔25o和39o,内孔25o和39o各限定一个油室,相关柱塞27,41的外周表面面对着油腔。 通过这种布置,提供了大批量生产率优异的气缸体结构。

    Swash plate type continuously variable transmission
    9.
    发明授权
    Swash plate type continuously variable transmission 失效
    斜盘式无级变速器

    公开(公告)号:US6122914A

    公开(公告)日:2000-09-26

    申请号:US151289

    申请日:1998-09-11

    IPC分类号: F16H39/14 F16D39/00

    CPC分类号: F16H39/14

    摘要: It is intended to provide a swash plate type continuously variable transmission capable of automatically affording a lock-up state in which second distributing valves are stopped at their stroke mid-point to cut off motor ports when a motor swash plate stands upright, even without using any special interlocking mechanism. Second distributing valves for bringing motor ports of motor cylinder bores into communication with a high-pressure oil path and a low-pressure oil path selectively in an alternate manner are arranged in parallel with the axis X of a cylinder block; a valve swash plate for reciprocating the second distributing valves is integrally combined with a motor swash plate on the same slant plane; and the motor ports are formed so as to be controlled selectively by the second distributing valves at respective positions 90.degree. out of phase in the circumferential direction of the cylinder block 4 with respect to the corresponding motor cylinder bores, the second distributing valves being stopped at their stroke mid-points when the motor swash plate stands upright. In a swash plate type hydraulic unit for use as a swash plate type oil-hydraulic pump or motor, it is intended to attain the reduction in radial size of the hydraulic unit while ensuring a sufficient plunger stroke.

    摘要翻译: 旨在提供一种斜盘式无级变速器,其能够自动提供锁定状态,其中当马达斜盘竖立时,第二分配阀在其行程中点停止以切断马达端口,即使不使用 任何特殊的互锁机制。 用于使马达缸孔的马达端口与高压油路连通的第二分配阀和选择性地以交替方式选择的低压油路布置成与气缸体的轴线X平行; 用于使第二分配阀往复运动的阀斜盘与在同一倾斜平面上的马达斜盘一体地组合; 并且电动机端口形成为通过第二分配阀在气缸体4的圆周方向相对于相应的电动机缸孔相位90°的相应位置选择性地进行控制,第二分配阀停止在 他们的冲程中点,当电机斜盘竖立时。 在用作斜盘式油压泵或电动机的斜盘式液压单元中,旨在实现液压单元的径向尺寸的减小,同时确保足够的柱塞行程。

    Hydrostatic continuously variable transmission
    10.
    发明授权
    Hydrostatic continuously variable transmission 失效
    静液压无级变速器

    公开(公告)号:US4938024A

    公开(公告)日:1990-07-03

    申请号:US312952

    申请日:1989-02-17

    摘要: In a hydrostatic continuously variable transmission, a pump cylinder of a swashplate type hydraulic pump is integrally and coaxially coupled with a motor cylinder of a swashplate type hydraulic motor. A number of distributor valves are radially arranged for reciprocal movement between radially inner and outer positions to put a large number of pump ports in the hydraulic pump into communication with the higher and lower pressure oil passages, and an eccentric ring circumscribed about the distributor valves is connected to an input member of the hydraulic pump for movement between a clutch OFF position and a clutch ON position. A clutch spring is connected to the eccentric ring for biasing the eccentric ring toward the clutch OFF position, and a weight is added to the eccentric ring and adapted to exhibit a centrifugal force for moving the eccentric ring toward the clutch ON position against a spring force of the clutch spring.

    摘要翻译: 在液压无级变速器中,旋转斜盘式液压泵的泵缸与旋转斜盘式液压马达的马达缸体一体地同轴联接。 多个分配阀径向布置成用于在径向内部和外部位置之间往复运动,以将大量泵口与液压泵中的高压和低压油通道连通,并且围绕分配器阀门的偏心环是 连接到液压泵的输入构件,用于在离合器OFF位置和离合器接通位置之间移动。 离合器弹簧连接到偏心环,用于将偏心环朝向离合器关闭位置偏压,并且将重量加到偏心环上,并且适于表现出离心力,以抵抗弹簧力使偏心环朝向离合器接通位置移动 的离合器弹簧。