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    • 6. 发明申请
    • CLUTCH SWITCHING CIRCUIT OF NONSTAGE TRANSMISSION
    • 离合器切换电路的非传输
    • WO1989007723A1
    • 1989-08-24
    • PCT/JP1989000141
    • 1989-02-13
    • KABUSHIKI KAISHA KOMATSU SEISAKUSHOISHINO, TsutomuMARUYAMA, Ryoichi
    • KABUSHIKI KAISHA KOMATSU SEISAKUSHO
    • F16H05/12
    • F16H61/06F16D48/0206F16D48/062F16D2048/0221F16D2048/0242F16D2048/0281F16D2500/1024F16D2500/1087F16D2500/7041F16D2500/70448F16H47/04Y10T477/637
    • This invention relates to a clutch switching circuit which can be utilized suitably for a multi-stage static hydraulic mechanical nonstage transmission. If pressure regulating valves having good override characteristics are used, slip or breakage of a clutch will occur. Therefore, this invention provides a clutch switching circuit which provides communicating throttle passages (311, 321, 331, 341) in the valve body of the pressure regulating valves (211, 221, 231, 241) so that a working fluid flows towards the clutch when the valves are closed. When the clutch is switched, the working fluid flows in a quantity equivalent at least to the oil leakage flow quantity so that the slip or breakage of the clutch can be prevented while pressure regulating valves having good override characteristics are used. The invention provides also a clutch switching circuit wherein common oil passages (301, 302) leading to a plurality of clutches corresponding to the gears which are not adjacent to one another are provided, and the pressure regulating valves (411, 421) and pressure reducing valves (412, 422) used commonly for a plurality of gears are installed in the common oil passages. Thus, the invention halves the number of valves of prior art apparatuses and simplifies the circuit construction.
    • 本发明涉及一种可以适用于多级静态液压机械非级变速器的离合器开关电路。 如果使用具有良好超驰特性的压力调节阀,则会发生离合器的滑动或断裂。 因此,本发明提供了一种离合器切换电路,其在压力调节阀(211,221,231,241)的阀体中提供连通节流通道(311,321,331,341),使得工作流体朝离合器流动 当阀门关闭时。 当切换离合器时,工作流体的流量至少等于漏油量,从而在使用具有良好超越特性的压力调节阀的情况下可以防止离合器的滑动或断裂。 本发明还提供了一种离合器切换电路,其中设置有通向与彼此不相邻的齿轮相对应的多个离合器的通用油路(301,302),并且压力调节阀(411,421)和减压 通常用于多个齿轮的阀(412,422)安装在公共油路中。 因此,本发明将现有技术装置的阀门数量减半,并简化了电路结构。