Electrohydraulic control unit
    1.
    发明授权
    Electrohydraulic control unit 失效
    电液控制单元

    公开(公告)号:US3964518A

    公开(公告)日:1976-06-22

    申请号:US612577

    申请日:1975-09-11

    CPC分类号: F15B13/043 Y10T137/86614

    摘要: An electrohydraulic control unit which regulates the flow of hydraulic fluid to and from one or more consumers by way of a directional control valve has a cylinder for a piston which is mechanically connected with or constitutes the spool of the directional control valve and divides the interior of the cylinder into two plenum chambers connected to the outlet of the pump, either directly or by way of a pressure reducing valve. The chambers are further connected with the tank and each of the fluid supplying and evacuating conduits for each of the two chambers contains a flow restrictor. Th flow restrictors in conduits for admission of fluid to the chambers are mounted upstream of check valves and the flow restrictors in conduits for evacuation of fluid from the chambers are mounted upstream of or constitute integral parts of two solenoid-operated auxiliary valves. The four flow restrictors together constitute a hydraulic bridge circuit.

    摘要翻译: 通过方向控制阀来调节来自一个或多个消耗者的液压流体的电动液压控制单元具有用于与方向控制阀机械连接或构成方向控制阀的阀芯的活塞的气缸, 将气缸直接或通过减压阀连接到泵的出口的两个增压室中。 这些室还与罐连接,并且用于两个腔室中的每一个的每个流体供应和排出管道都包含限流器。 用于将流体进入腔室的管道中的流量限制器安装在止回阀的上游,并且用于从腔室排出流体的管道中的限流器安装在两个电磁辅助阀的上游或构成两个电磁辅助阀的一体部分。 四个流量限制器一起构成一个液压桥接电路。

    Agricultural working vehicle with electro-hydraulic for regulating
lifting mechanism arrangements
    3.
    发明授权
    Agricultural working vehicle with electro-hydraulic for regulating lifting mechanism arrangements 失效
    具有电动液压的农用作业车辆,用于调节起重机构装置

    公开(公告)号:US4809785A

    公开(公告)日:1989-03-07

    申请号:US894774

    申请日:1986-08-08

    CPC分类号: A01B63/1117

    摘要: An electro-hydraulic arrangement regulating the lifting mechanism actuatable by a hydraulic motor, on an agricultural working vehicle having a driven wheel, comprises a plurality of sensors including a position sensor forming an actual value position signal, a force sensor forming an actual value force sensor, and an additional sensor forming an actual value slippage signal dependent on slippage of the driven wheel, a nominal value transmitter, a first summation point connected with the additional sensor and with the force sensor so as to obtain the slippage-dependent signal and the actual value force signal therefrom and to produce an output signal, a mixing device having a first input connected with the first summation point and for receiving the output signal and a second input connected with the position sensor for receiving the actual value position signal and producing an output signal, and a second summation point connected with the mixing device for receiving the output signal of the mixing device and also connected with the nominal value transmitter for receiving a signal from the latter so as to form a regulating deviation for the lifting mechanism.

    摘要翻译: 一种电动液压装置,其调节由具有从动轮的农用车辆上由液压马达驱动的提升机构,包括多个传感器,包括形成实际值位置信号的位置传感器,形成实际值力传感器的力传感器 以及额外的传感器,其根据从动轮的滑动,标称值发射器,与附加传感器连接的第一和点和力传感器形成实际的滑动信号,以获得滑动相关信号和实际的 输出信号,产生输出信号,混合装置具有与第一求和点连接并用于接收输出信号的第一输入和与位置传感器连接的第二输入,用于接收实际值位置信号并产生输出 信号,以及与混合装置连接的第二加法点,用于接收输出信号 并且还与标称值发射器连接以接收来自后者的信号,以便形成提升机构的调节偏差。

    Agricultural tractor-trailer slippage recognition system and method
    4.
    发明授权
    Agricultural tractor-trailer slippage recognition system and method 失效
    农用拖拉机拖车识别系统及方法

    公开(公告)号:US4454919A

    公开(公告)日:1984-06-19

    申请号:US326282

    申请日:1981-12-01

    CPC分类号: A01B63/1117 F02B1/04

    摘要: To prevent a tractor pulling a plow (P) from digging itself in, if the plow position, with respect to soil or tractor level, is controlled by an automatic control system which causes the plow to be lowered if the pulling force of the tractor decreases, slip of the drive wheels of the tractor is sensed and an overriding command signal given to the plow positioning system (S) tending to raise the plow, or, alternatively, a visual indication is given to the operator that the plough should be raised manually; the slip condition is sensed by differentiating a signal representative of plow position, with respect to time, and comparing the so differentiated plow positioning signal (or, in other words, plow dropping speed signal) with a reference which, preferably, includes such factors as tractor engine speed, tractor and/or implement weight, ground wheel adhesion, tractor gearing, and the like.

    摘要翻译: 为了防止拖拉机拉犁(P)挖掘自己,如果犁位置相对于土壤或拖拉机水平,则由自动控制系统控制,如果拖拉机的拉力减小,则使自动犁降低 感测到拖拉机的驱动轮的滑动,并且向操作者提供给犁耕定位系统(S)的倾斜命令信号倾向于提高犁,或者替代地,视觉指示手动地升高犁 ; 通过对代表犁位置的信号相对于时间进行微分来检测滑移条件,并将如此分化的犁定位信号(或换句话说,犁落下降速度信号)与参考进行比较,优选地包括以下因素: 拖拉机发动机速度,拖拉机和/或实施重量,砂轮附着力,拖拉机传动装置等。

    Safety interlock circuit for an error-signal-controlled servo system
    5.
    发明授权
    Safety interlock circuit for an error-signal-controlled servo system 失效
    用于误差信号控制伺服系统的安全联锁电路

    公开(公告)号:US4191913A

    公开(公告)日:1980-03-04

    申请号:US857889

    申请日:1977-12-06

    IPC分类号: G05B9/02 G05D3/12

    CPC分类号: G05B9/02 G05D3/12

    摘要: In a servo system for manipulating a displaceble member in response to movement of a control through corresponding changes of position, which operates by comparing an electrical signal representative of the position of the control with an electrical signal representative of the position of the displaceable member to provide error signals which can drive the displaceable member in either of two opposite directions, a safety interlock circuit is provided which detects the presence of an error signal in either direction immediately after the application of operating voltage or immediately after the switching of the machinery into a different mode of operation and locks the displaceable member in position if an error signal initially appears until the error signal is cancelled by bringing the manual control into a position corresponding with that of the displaceable member. Unexpected sudden movements that may endanger personnel are thereby prevented. The invention is illustrated with reference to mobile agricultural machinery.

    摘要翻译: 在用于通过相应的位置变化响应于控制器的移动来操纵位移构件的伺服系统中,该位置操作通过将表示控制位置的电信号与代表可位移构件的位置的电信号进行比较来提供 可以在两个相反的方向中的任何一个驱动可移动部件的误差信号,提供安全互锁电路,其在施加工作电压之后立即在任一方向上检测出错误信号,或者在机器切换到不同的方式之后 操作模式,并且如果最初出现错误信号直到通过将手动控制置于与可移动构件的位置相对应的位置来消除误差信号之前将可移位构件锁定就位。 从而防止可能危及人员的意外突然移动。 参考移动农业机械说明本发明。

    Current regulating circuit for an electric consumer
    6.
    发明授权
    Current regulating circuit for an electric consumer 失效
    电动消耗电流调节电路

    公开(公告)号:US4492913A

    公开(公告)日:1985-01-08

    申请号:US411713

    申请日:1982-08-25

    摘要: A so-called current-regulated end stage for electromagnetic consumers such as magnetic valves or electromagnetic final control elements is provided, in which a field effect transistor takes over the functions of the switch and of the current measuring resistor. When the field effect transistor is conductive, the voltage over a capacitor is made to follow the current flowing through the consumer, and when the field effect transistor is blocked, the flow of current through the free-running circuit is simulated via the capacitor discharge. Both a singlefold and a multiple realization are disclosed, the latter using multiple examples of an RC member and a threshold switch.

    摘要翻译: 提供了一种用于诸如电磁阀或电磁最终控制元件的电磁消耗器的所谓的电流调节终端,其中场效应晶体管接管开关和电流测量电阻器的功能。 当场效应晶体管导通时,使电容器上的电压跟随流过消费者的电流,并且当场效应晶体管被阻塞时,通过电容器放电来模拟通过自由运行电路的电流。 公开了单重和多重实现,后者使用RC构件和阈值开关的多个示例。

    Control system for a pulled load, particularly agricultural
tractor-and-plough control system
    7.
    发明授权
    Control system for a pulled load, particularly agricultural tractor-and-plough control system 失效
    牵引负荷控制系统,特别是农用拖拉机和犁耕控制系统

    公开(公告)号:US4437048A

    公开(公告)日:1984-03-13

    申请号:US389587

    申请日:1982-06-18

    申请人: Winfried Arnold

    发明人: Winfried Arnold

    CPC分类号: A01B63/1117

    摘要: To render the mixing relationship of mixed actual pulling force signals and actual positioning signals independent of the level of the respective individual signals, and thus avoid resetting of a manual positioning command element (7) upon change of respective relationships of pulling force and position, for example depth of furrow of a plough upon change of soil consistency, the force signal is normalized or rendered of equal value with respect to the position signal, preferably in accordance with predetermined events, such as change in the positioning command element, sensing of excessive pulling force, or the like, so that the normalized force signal and the actual position signal will be in balance, and relative change thereof in the mixer will not cause uncontrolled change in the position of the load, for example the plough, without resetting of the command element (or, conversely, require resetting of the command element upon change in relationship of the mixed signals).

    摘要翻译: 为了使混合的实际拉力信号和实际定位信号的混合关系独立于各个信号的水平,并且因此避免了在拉动力和位置的各自关系改变时重新设置手动定位指令元件(7​​),以便 在土壤一致性变化时,犁沟的示例深度,力信号相对于位置信号被归一化或相等的值,优选地根据预定事件,诸如定位指令元件的变化,过度牵引的感测 力等,使得归一化的力信号和实际位置信号将保持平衡,并且混合器中的相对变化不会导致负载(例如犁)的位置的不受控制的变化,而不重置 命令元素(或者相反地,在混合信号的关系变化时需要重置命令元素)。