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    • 1. 发明授权
    • Method for smooth hydrostatic pump/motor transitions
    • 平滑静液压泵/电机转换方法
    • US5582007A
    • 1996-12-10
    • US439072
    • 1995-05-11
    • Alan R. CoutantSanjay Rajagopalan
    • Alan R. CoutantSanjay Rajagopalan
    • F16H61/42F16H61/425F16H61/435F16H61/46F16D39/00
    • F16H61/431F16H61/421F16H61/46
    • A method is disclosed for providing a smooth power transition between a variable displacement pump and a variable displacement motor when a mechanical feedback is not provided. The method includes sensing and comparing the speeds of the variable displacement pump and the variable displacement motor based on known maximum volumetric displacements and reducing the rate of change of displacement of one of the variable displacement pump or the variable displacement motor when it is determined that the one is near its maximum displacement position and simultaneously initiating a change in displacement of the other thereof. The subject arrangement ensures that there is no detrimental interruptions of power during the transition of changing of displacement of one of the variable displacement pump and the variable displacement motor to changing the displacement of the other one thereof.
    • 公开了一种在不提供机械反馈时在可变排量泵和可变排量马达之间提供平稳功率转换的方法。 该方法包括基于已知的最大体积位移来检测和比较可变排量泵和可变排量马达的速度,并且当确定可变排量泵或可变排量马达的位移变化率时 一个在其最大位移位置附近,同时开始另一个位移的变化。 主题布置确保了在可变排量泵和可变排量马达中的一个的位移的改变过渡期间不会有任何不利的中断,从而改变其另一个的位移。
    • 3. 发明授权
    • Integrated power transmitting system
    • 综合电力传输系统
    • US5575735A
    • 1996-11-19
    • US416394
    • 1995-04-06
    • Alan R. CoutantJerry D. MarrSanjay Rajagopalan
    • Alan R. CoutantJerry D. MarrSanjay Rajagopalan
    • F16H61/00F16H47/02F16H47/04F16H61/04F16H61/46F16H61/462
    • F16H47/04F16H61/46F16H61/462F16H61/0403Y10T477/636
    • An integrated power transmitting system includes a hydrostatic transmission and a mechanical transmission both being driven by an engine. The output of the hydrostatic transmission and the mechanical transmission are both selectively coupled to a work system through a final output shaft. A sensing arrangement senses the transmission input speed, the output of the hydrostatic transmission and the speed of the final output shaft and delivers the signals to the microprocessor. The microprocessor processes the received signals on a continuous basis and delivers a first set of command signals to control operation of the hydrostatic transmission and a second set of control signals to selectively control forward and reverse direction and high and low clutches within the mechanical transmission. A planetary arrangement within the mechanical transmission sums the speed of the hydrostatic transmission with a full range forward and reverse gear mechanism. This arrangement provides a smooth and continuous change in the speed of a machine in both the forward and reverse directions throughout its entire speed range.
    • 集成的动力传递系统包括由发动机驱动的液压传动和机械变速器。 静液压传动装置和机械传动装置的输出通过最终输出轴选择性地耦合到工作系统。 感测装置感测变速器输入速度,静液压传动的输出和最终输出轴的速度,并将信号传送到微处理器。 微处理器连续地处理接收到的信号,并传送第一组命令信号以控制静液压变速器的操作和第二组控制信号,以选择性地控制机械变速器内的前进和后退方向以及高和低离合器。 机械传动装置内的行星装置将全液压前进和后退齿轮机构的静液压变速器的速度相加。 这种布置使机器在整个速度范围内的正向和反向方向上的速度平滑且连续地变化。
    • 8. 发明授权
    • Split torque transmission
    • 分离转矩传递
    • US5667452A
    • 1997-09-16
    • US417561
    • 1995-04-06
    • Alan R. Coutant
    • Alan R. Coutant
    • B60K17/08F16H47/04F16H47/02
    • F16H47/04F16H2037/088F16H61/42
    • A split torque transmission includes a hydrostatic transmission and a mechanical transmission both being driven by an engine. The output of the hydrostatic transmission and the mechanical transmission are both selectively coupled to a machine through a final output shaft. The mechanical transmission incudes a full range high forward and reverse mechanism selectively coupled to a planetary arrangement. The planetary arrangement sums the speed of the hydrostatic transmission with the full range high forward and reverse mechanism. This arrangement provides a smooth and continuous change in the speed of the machine in both the forward and reverse directions throughout its entire speed range which is identical in both directions of travel.
    • 分体式扭矩传动装置包括静液压传动装置和机械传动装置,两者均由发动机驱动。 液压传动装置和机械传动装置的输出通过最终输出轴选择性地连接到机器上。 机械传动包括选择性地联接到行星装置的全范围的高正向和反向机构。 行星装置将静液压传动的速度与全范围的高正向和反向机构相加。 这种布置在机器的正向和反向两个方向上在两个行进方向上相同的整个速度范围内提供平稳和连续的变化。
    • 10. 发明授权
    • Control arrangement for a hydrostatic system
    • 静液压系统的控制装置
    • US5561979A
    • 1996-10-08
    • US390001
    • 1995-02-17
    • Alan R. CoutantJerry D. Marr
    • Alan R. CoutantJerry D. Marr
    • F15B11/02F04B49/06F15B21/08F16D31/02
    • F16H61/462F04B49/065F15B21/087F04B2201/1201F04B2203/1201F16H61/425F16H61/435
    • In many hydrostatic systems, the variable displacement pump is controlled by an operator moving a directional control valve to provide pressurized fluid to the displacement changing mechanism thereof which in turn varies the displacement responsive to the degree of pressurized fluid being directed to the displacement changing mechanism. In order to insure that the displacement of the Variable displacement pump is at the desired displacement, various forms of follow-up mechanisms have been required. These follow-up mechanisms are many times complicated and expensive to add to the hydrostatic system. In the subject arrangement, the speed of the pump input shaft and the speed of the motor output shaft is sensed (R,S) and the signals directed to a microprocessor which in turn processes the signals and directs a control signal (P) to a solenoid operated proportional valve. The solenoid operated proportional valve moves in response to the control signal and directs pressurized fluid to the displacement controller of the variable displacement pump to change the displacement thereof. Once the speed of the output shaft is achieved, the microprocessor modifies the control signal to maintain the variable displacement pump at the needed displacement position to maintain the desired speed of the output shaft to a work system. This arrangement provides an accurate control of the displacement of the variable displacement pump without the need of providing complicated follow-up mechanisms and/or servo mechanisms.
    • 在许多流体静力学系统中,可变排量泵由操作者控制方向控制阀来控制,以将加压流体提供给其位移改变机构,该位移改变机构又响应于加压流体被引导到位移改变机构的程度而改变位移。 为了确保可变排量泵的位移处于所需的位移,已经需要各种形式的后续机构。 这些后续机制多次复杂并且昂贵,以增加静液压系统。 在主题布置中,泵输入轴的速度和电动机输出轴的速度被感测(R,S),并且指向微处理器的信号,微处理器进而处理信号并将控制信号(P)引导到 电磁比例阀。 电磁比例阀响应于控制信号而移动,并将加压流体引导到可变排量泵的排量控制器以改变其位移。 一旦实现输出轴的速度,微处理器就改变控制信号,以将可变排量泵保持在所需的位移位置,以将输出轴的期望速度保持在工作系统上。 这种布置提供了可变排量泵的位移的精确控制,而不需要提供复杂的后续机构和/或伺服机构。