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公开(公告)号：US5182908A
公开(公告)日：1993-02-02
申请号：US819705
申请日：1992-01-13
CPC分类号： E02F9/2221 , F15B11/162 , F15B11/165 , F15B21/08 , G05B19/042 , G05B19/43 , F15B2211/20546 , F15B2211/20576 , F15B2211/6309 , F15B2211/633 , F15B2211/6333 , F15B2211/6336 , F15B2211/6346 , F15B2211/6651 , F15B2211/6652 , F15B2211/71 , F15B2211/781 , F15B2211/865
摘要： An apparatus controls a fluid system of a work vehicle. The work vehicle has an engine and at least one fluid circuit which has a pump driven by the engine. A plurality of control valves controllably pass fluid from the pump to a plurality of respective work elements. The control valves have movable valve stems. A work attachment which has a respective control valve is added to the fluid system. A plurality of operator control elements provide demand signals in response to selected settings. Each demand signal is indicative of a requested fluid flow to a respective work element or work attachment. A memory device stores select parameters of the fluid system. One of the select parameters is a predetermined priority value representing the precedence in which fluid is delivered from the pump to the control valve of the work attachment. A controller receives the predetermined priority value of the work attachment and the demand signals. The controller responsively determines the sequence in which fluid is distributed from the pump to the respective control valves. Then the controller delivers control signals to the rerspective control valves in response to the determination, selectively positioning the stem of the respective control valves.
摘要翻译： 一种装置控制作业车辆的流体系统。 工作车辆具有发动机和至少一个具有由发动机驱动的泵的流体回路。 多个控制阀可控地将流体从泵传递到多个相应的工作元件。 控制阀具有可动阀杆。 具有相应控制阀的工件附加到流体系统中。 多个操作员控制元件响应于所选择的设置来提供需求信号。 每个需求信号指示要求的流体流向相应的工件或工件附件。 存储装置存储流体系统的选择参数。 选择参数中的一个是预定的优先级值，其表示流体从泵输送到工件附件的控制阀的优先级。 控制器接收工作附件和需求信号的预定优先级值。 控制器响应地确定流体从泵分配到相应的控制阀的顺序。 然后，控制器响应于确定，向控制阀提供控制信号，选择性地定位各个控制阀的阀杆。
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公开(公告)号：US5560387A
公开(公告)日：1996-10-01
申请号：US351965
申请日：1994-12-08
CPC分类号： E02F9/2232 , E02F9/2025 , E02F9/2221 , E02F9/2228 , E02F9/2296 , F15B11/162 , F15B2211/20546 , F15B2211/3111 , F15B2211/40515 , F15B2211/428 , F15B2211/45 , F15B2211/6355 , F15B2211/6652 , F15B2211/6653 , F15B2211/71 , F15B2211/781 , Y10T137/0318 , Y10T137/87217
摘要： A control system is provided for a hydraulic circuit having first and second hydraulic valves, a valve spool position sensor, and first and second input devices for producing first and second operation signals. A controller receives a signal from the valve spool position sensor and the second operation signal and responsively modifies the value of the second operation signal in response to the valve spool position signal.
摘要翻译： 提供一种用于具有第一和第二液压阀的液压回路，阀芯位置传感器以及用于产生第一和第二操作信号的第一和第二输入装置的控制系统。 控制器从阀芯位置传感器和第二操作信号接收信号，并响应于阀芯位置信号响应地修改第二操作信号的值。
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3.发明授权
公开(公告)号：US5197864A
公开(公告)日：1993-03-30
申请号：US821203
申请日：1992-01-16
CPC分类号： F04B49/08
摘要： High pressure cutoff controls are useful for variable displacement hydraulic pumps for reducing power losses at high pressure levels. Some operators, however, believe that they get more work from pumps not having the high pressure cutoff control. The subject on-off high pressure cutoff control includes an on-off valve disposed in a pilot passage connected to an output port of a pump and to an end of a high pressure cutoff valve. The on-off valve is selectively movable between a first position at which pressurized fluid passes through the pilot passage to the end of the high pressure cutoff valve to prevent it from functioning as a high pressure cutoff valve. Thus, an operator has the option of operating the hydraulic pump with or without the high pressure cutoff control.
摘要翻译： 高压截止控制对于可变排量液压泵来说是有用的，用于降低高压级别的功率损耗。 然而，一些操作人员认为，他们从没有高压截止控制的泵获得更多的工作。 被摄体开 - 关高压切断控制装置包括设置在连接到泵的输出端口和高压截止阀的端部的先导通道中的开关阀。 开关阀可以选择性地在第一位置和第二位置之间移动，在该第一位置，加压流体通过引导通道到达高压截止阀的端部，以防止其作为高压截止阀而起作用。 因此，操作者可选择在具有或不具有高压切断控制的情况下操作液压泵。
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公开(公告)号：US5305681A
公开(公告)日：1994-04-26
申请号：US104521
申请日：1993-08-10
CPC分类号： E02F9/2025 , F15B21/087
摘要： An apparatus for controllably actuating a hydraulic actuator is provided. The apparatus is connected between a source of pressurized hydraulic fluid and the hydraulic actuator. The apparatus controllably provides pressurized hydraulic fluid to the hydraulic actuator. The apparatus includes a controller for receiving an operating signal and a load pressure signal and responsively actuating the hydraulic actuator.
摘要翻译： 提供一种用于可控地致动液压致动器的装置。 该装置连接在加压液压流体源和液压致动器之间。 该装置可控地向液压致动器提供加压液压流体。 该装置包括用于接收操作信号和负载压力信号并响应地致动液压致动器的控制器。
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公开(公告)号：US5299420A
公开(公告)日：1994-04-05
申请号：US66634
申请日：1993-05-26
IPC分类号： B60W10/00 , B60W10/10 , E02F9/22 , F02D45/00 , F15B20/00 , G05D16/20 , F16D31/02 , F15B13/044
CPC分类号： E02F9/22 , F15B20/002 , F15B20/008 , Y10T137/87209 , Y10T137/87217
摘要： A control system is provided for use with a hydraulic system which includes a source of pressurized fluid, a plurality of flow regulator means, and a plurality of fluidly powered components. Each flow regulator means is adapted to receive the pressurized fluid and is responsive to a respective control signal for regulating the flow of pressurized fluid to respective fluidly powered components. The control system includes a plurality of control members, each being movable to a plurality of locations for indicating a desired fluid output for a respective flow regulator means. A plurality of sensors are provided for sensing the position of respective control members and responsively producing respective position signals. A primary controller is adapted to receive the position signals, process the received signals to responsively produce the control signals, and deliver the control signals to the flow regulator means. A secondary controller is normally disabled and is adapted to receive the position signals, process the position signals to responsively produce the control signals, and deliver the control signals to the flow regulator means. A first device is provided for controllably disabling the primary controller and enabling the secondary controller.
摘要翻译： 提供了一种用于液压系统的控制系统，液压系统包括加压流体源，多个流量调节装置和多个流体动力部件。 每个流量调节器装置适于接收加压流体，并响应于相应的控制信号，以将加压流体的流量调节到相应的流体动力部件。 控制系统包括多个控制构件，每个控制构件可移动到多个位置，用于指示相应流量调节装置的期望的流体输出。 提供多个传感器用于感测各个控制构件的位置并响应地产生相应的位置信号。 主控制器适于接收位置信号，处理接收的信号以响应地产生控制信号，并将控制信号传送到流量调节器装置。 二次控制器通常被禁用，并且适于接收位置信号，处理位置信号以响应地产生控制信号，并将控制信号传送到流量调节器装置。 第一设备被提供用于可控制地禁用主控制器并启用次级控制器。
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6.发明授权
公开(公告)号：US5267441A
公开(公告)日：1993-12-07
申请号：US819704
申请日：1992-01-13
CPC分类号： F16H61/475 , E02F9/2221 , E02F9/2296 , F04B49/065 , F04B2201/1201 , F04B2201/12051 , F04B2205/05 , F04B2207/041 , F04B2207/042 , F04B2207/047 , F16H2059/6853
摘要： An apparatus for limiting the power output of a hydraulic system is disclosed. The hydraulic system has a variable displacement pump. The variable displacement pump has a movable swashplate and is driven by a source of motive power. The apparatus includes a memory device for storing a set of power modes. Each power mode has a predetermined power level associated with the hydraulic system and is defined by a plurality of set points. Each set point corresponds to a predetermined flow rate and discharge pressure of the pump. A device senses the speed of the source of motive power and producing a signal representative of the actual speed in response to the sensed speed. A device senses the pressure of the variable displacement pump and produces a signal representative of the actual pressure in response to the sensed pressure. A device senses the swashplate angle of the variable displacement pump and delivers a signal representative of the actual swashplate angle in response to the sensed swashplate angle. A device receives a desired power mode signal having a desired power level. The desired power level is different from the predetermined power levels associated with the set of power modes. A control device receives the actual speed, pressure and swashplate angle signals, and responsively determines a desired flow limit of the pump. The desired flow limit corresponds to the desired power level.
摘要翻译： 公开了一种用于限制液压系统的功率输出的装置。 液压系统具有可变排量泵。 可变排量泵具有可动的斜盘，并由动力源驱动。 该装置包括用于存储一组功率模式的存储装置。 每个功率模式具有与液压系统相关联的预定功率水平并且由多个设定点限定。 每个设定点对应于泵的预定流量和排出压力。 一个装置感测动力源的速度，并根据感测的速度产生代表实际速度的信号。 设备感测可变排量泵的压力，并响应于感测到的压力产生表示实际压力的信号。 设备感测可变排量泵的斜盘角度，并响应于感测的斜盘角度传送代表实际斜盘角度的信号。 设备接收具有期望功率电平的所需功率模式信号。 期望的功率水平不同于与该组功率模式相关联的预定功率水平。 控制装置接收实际的速度，压力和斜盘角度信号，并且响应地确定泵的期望流量极限。 期望的流量限制对应于期望的功率水平。
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公开(公告)号：US5967756A
公开(公告)日：1999-10-19
申请号：US886727
申请日：1997-07-01
CPC分类号： F04B49/20 , E02F9/2296 , F02D29/04 , F04B49/06 , F04B2201/1204 , F04B2203/0603 , F04B2203/0605 , F04B2207/041 , F04B2207/044
摘要： An apparatus for controlling an electrohydraulic system of a work machine having an engine that drives a variable displacement pump is disclosed. A pump displacement setting device produces a pump command signal indicative of a desired displacement of the variable displacement pump. An engine speed setting device produces an engine command signal indicative of a desired rotational speed of the engine. A power manager receives the pump and engine command signals, determines an efficient engine speed and pump displacement, and produces an engine control signal that decreases the engine speed to the efficient engine speed and a pump control signal that increases the pump displacement to an efficient pump displacement, while maintaining a substantially constant pump flow rate.
摘要翻译： 公开了一种用于控制具有驱动变排量泵的发动机的作业机械的电动液压系统的装置。 泵位移设定装置产生指示可变排量泵的期望位移的泵指令信号。 发动机转速设定装置产生指示发动机的期望转速的发动机指令信号。 功率管理器接收泵和发动机指令信号，确定有效的发动机转速和泵排量，并且产生将发动机转速降低到有效的发动机转速的发动机控制信号以及将泵排量增加到高效泵的泵控制信号 同时保持基本恒定的泵流量。
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公开(公告)号：US5348115A
公开(公告)日：1994-09-20
申请号：US95567
申请日：1993-07-19
IPC分类号： B60K17/10 , B60K17/356 , B60K31/00 , B60K7/00
CPC分类号： B60K17/356
摘要： An apparatus is provided for use in a vehicle having a source of pressurized fluid and a pair of hydraulic drive motors connected to the pressurized fluid source and powered thereby. First and second ground engaging devices are connected to and driven by the first and second motors, respectively. The apparatus includes first and second control members, each being positionable at a plurality of locations for indicating a desired speed and direction for a respective drive motor. First and second actuators are adapted to sense the position of the first and second control members, respectively, and responsively control the direction and rate of fluid flow to the first and second drive motors. A set switch is movable between first and second positions and is adapted to produce a set speed signal in the second position. A set speed device is provided for receiving the set speed signal and operating the drive motors at a constant speed in response to the set speed signal, wherein the speed of the motors is responsive to the position of the control members upon reception of the set speed signal.
摘要翻译： 提供了一种用于具有加压流体源的车辆和连接到加压流体源的动力的一对液压驱动马达的装置。 第一和第二接地装置分别连接到第一和第二电动机并由其驱动。 该装置包括第一和第二控制构件，每个控制构件可定位在多个位置，用于指示相应的驱动马达的期望速度和方向。 第一和第二致动器分别适于感测第一和第二控制构件的位置，并且响应地控制流向第一和第二驱动马达的流体的方向和速率。 设置开关可在第一和第二位置之间移动，并且适于在第二位置产生设定速度信号。 提供了一种设定速度装置，用于接收设定速度信号并响应于设定速度信号以恒定速度操作驱动马达，其中马达的速度响应于控制构件在接收到设定速度时的位置 信号。
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公开(公告)号：US07441404B2
公开(公告)日：2008-10-28
申请号：US10998592
申请日：2004-11-30
IPC分类号： F16D31/02
摘要： A control system for a work machine having a plurality of removably attachable work tools is disclosed. The control system has a tool recognition device configured to generate a recognition signal corresponding to each of the removably attachable work tools, and at least one fluid actuator configured to move at least one of the plurality of removably attachable work tools. The control system also has at least one fluid sensor configured to generate a load signal and at least one operator interface device configured to generate a desired velocity signal. The control system further has a controller in communication with the tool recognition device, the at least one fluid actuator, the at least one fluid sensor, and the at least one input device. The controller is configured to command a velocity for the fluid actuator in response to the recognition signal, the load signal, and the desired velocity signal.
摘要翻译： 公开了一种用于具有多个可移除安装的作业工具的作业机械的控制系统。 所述控制系统具有工具识别装置，其被配置为产生对应于每个所述可拆卸地附接的作业工具的识别信号，以及至少一个流体致动器，其构造成移动所述多个可移除可拆卸的工作工具中的至少一个。 控制系统还具有配置成产生负载信号的至少一个流体传感器和配置成产生所需速度信号的至少一个操作者接口装置。 控制系统还具有与刀具识别装置，至少一个流体致动器，至少一个流体传感器和至少一个输入装置连通的控制器。 控制器被配置为响应于识别信号，负载信号和期望的速度信号来命令流体致动器的速度。
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公开(公告)号：US5951258A
公开(公告)日：1999-09-14
申请号：US890627
申请日：1997-07-09
CPC分类号： F04B49/065 , F04B2201/0206 , F04B2203/0603 , F04B2203/0605 , F04B2205/05
摘要： An apparatus for controlling an electrohydraulic system of a work machine having an engine that drives a variable displacement pump is disclosed. The apparatus includes a pump displacement setting device that produces a pump command signal, a pressure sensor that detects the fluid pressure associated with the variable displacement pump and produces a pressure signal, and an engine speed sensor that detects the speed of the engine and produce an engine speed signal. A microprocessor computes the torque demand on the engine in response to the desired pump displacement, determines a torque limit associated with the engine in response to the engine speed, and responsively modifies the pump command signal to limit the engine torque.
摘要翻译： 公开了一种用于控制具有驱动变排量泵的发动机的作业机械的电动液压系统的装置。 该装置包括产生泵命令信号的泵位移设置装置，检测与可变排量泵相关联的流体压力并产生压力信号的压力传感器，以及检测发动机速度并产生 发动机转速信号。 微处理器响应于期望的泵位移来计算发动机的扭矩需求，响应于发动机转速确定与发动机相关联的转矩极限，并且响应地修改泵命令信号以限制发动机转矩。
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