公开(公告)号：US4802336A

公开(公告)日：1989-02-07

申请号：US319467

申请日：1981-11-09

申请人： Albert Mayr ,  Wolfgang Wiest

发明人： Albert Mayr ,  Wolfgang Wiest

IPC分类号： F16H61/46 ,  F16H61/475

CPC分类号： F16H61/433 ,  F16H61/46 ,  F16H61/475

摘要： There is disclosed an hydrostatic transmission having a control and regulating device for adjusting the driving torque with superimposed output power limit regulation, the transmission comprising a drive unit comprising an hydraulic pump having a variable output, and an hydraulic motor arranged to be operated by the hydraulic pump; a servo-adjusting device arranged to control the output of the hydraulic pump in order to adjust the working pressure in the transmission, said device comprising a servo piston arranged for two-way adjustment of the hydraulic pump in two directions, and a control valve arranged to subject the servo-piston to an adjusting pressure so that the piston can adjust the operation of the hydraulic pump; a servo-valve spool provided in said control valve and arranged, in dependence upon the desired direction of adjustment of the hydraulic pump, to be subjected on the one hand to a control pressure and on the other hand to the working pressure prevailing in the transmission or a regulating pressure proportional to the working pressure; an arbitrarily variable operating device comprising a pressure regulator for adjusting said control pressure from a constant supply pressure provided by an auxiliary pump; and a regulating valve arranged to limit the control pressure, or indirectly the supply pressure, and adjustable in dependence upon the amount of working fluid running through the drive unit whereby the regulating valve operates in dependence upon the discharge amount through the drive unit only when a predetermined minimal discharge amount is reached.

摘要翻译： 公开了一种具有控制和调节装置的液压传动装置，用于通过叠加的输出功率限制调节来调节驱动转矩，该变速器包括一个驱动单元，该驱动单元包括具有可变输出的液压泵，以及液压马达，其布置成由液压 泵 伺服调节装置，其设置为控制液压泵的输出，以便调节变速器中的工作压力，所述装置包括一个伺服活塞，该伺服活塞设置成用于沿两个方向对液压泵进行双向调节;以及控制阀， 使伺服活塞达到调节压力，使活塞可以调节液压泵的运行; 设置在所述控制阀中的伺服阀阀芯，其根据液压泵的期望的调节方向被设置成一方面受控于一个控制压力，另一方面被设置在传动装置中的工作压力 或与工作压力成比例的调节压力; 一个任意可变的操作装置，包括用于从由辅助泵提供的恒定供应压力调节所述控制压力的压力调节器; 以及调节阀，其被设置成限制控制压力或间接地供应压力，并且可以根据流过驱动单元的工作流体的量来调节，由此调节阀根据仅通过驱动单元的排出量仅在 达到预定的最小排放量。

公开(公告)号：US4627238A

公开(公告)日：1986-12-09

申请号：US660384

申请日：1984-10-12

申请人： Albert Mayr ,  Oskar Stickel

发明人： Albert Mayr ,  Oskar Stickel

IPC分类号： E02F9/22 ,  F04B49/00 ,  F04B49/08 ,  F15B11/00 ,  F16H61/46 ,  F16H61/472 ,  F16D31/02

CPC分类号： F04B49/08 ,  E02F9/2232 ,  E02F9/2292 ,  E02F9/2296 ,  F04B49/002 ,  F16H61/46 ,  F16H61/472

摘要： An output control apparatus for a hydrostatic drive in open circuit is described which has a device for regulating the delivery of the hydraulic pump. In addition to conventional output control by way of an output valve, the arrangement of an additional control piston which acts on the spool of the output valve provides the possiblity of adjusting the delivery as a function of the restoring pressure of a load during its working movement in a return direction, with reduced power consumption.

摘要翻译： 描述了一种用于开路中的静液压驱动的输出控制装置，其具有用于调节液压泵的输送的装置。 除了通过输出阀的常规输出控制之外，作用在输出阀的阀芯上的附加控制活塞的布置提供了在其工作运动期间作为负载的恢复压力的函数调整输送的可能性 在返回方向上，具有降低的功耗。