Hydrostatic drive system with a safety device
    121.
    发明授权
    Hydrostatic drive system with a safety device 失效
    具有安全装置的静液压驱动系统

    公开(公告)号:US07036308B2

    公开(公告)日:2006-05-02

    申请号:US10941035

    申请日:2004-09-14

    申请人: Tobias Rollmann

    发明人: Tobias Rollmann

    IPC分类号: F16D31/02

    摘要: A hydrostatic drive system (1) has at least one user. A control valve device (3; 4; 5; 6) to control the user is actuated by an actuation signal. A delivery flow regulation device (11) is triggered by a load pressure signal of the user. The drive system has a safety device (20) with a function position (21b) in which the actuation signal is routed to the control valve device (3; 4; 5; 6) and the load pressure signal is routed to the delivery flow regulation device (11), and a safety position (21a) in which the control valve device (3; 4; 5; 6) is discharged by the actuation signal and the delivery flow regulation device (11) by the load pressure signal. The safety device (20) also has a discharge position (21c) in which the connection of the control valve device (3; 4; 5; 6) with the user is discharged.

    摘要翻译: 静液压驱动系统(1)至少有一个使用者。 用于控制用户的控制阀装置(3; 4; 5; 6)由致动信号致动。 输送流量调节装置(11)由用户的负载压力信号触发。 所述驱动系统具有安全装置(20),所述安全装置具有功能位置(21b),其中所述致动信号被传送到所述控制阀装置(3; 4; 5; 6),并且所述负载压力信号被路由到所述输送流 以及安全位置(21a),其中所述控制阀装置(3; 4; 5; 6)由所述致动信号和所述输送流量调节装置(11)通过所述负载压力信号排出。 安全装置(20)还具有排出位置(21c),其中控制阀装置(3; 4; 5; 6)与使用者的连接被排出。

    Servo-pneumatic actuator
    122.
    发明申请
    Servo-pneumatic actuator 失效
    伺服气动执行器

    公开(公告)号:US20060037467A1

    公开(公告)日:2006-02-23

    申请号:US11210196

    申请日:2005-08-22

    IPC分类号: F15B13/16

    摘要: A positioning system includes an actuator, valve (preferably pneumatic), position sensor and an electronic valve controller, integrated in a single unit. Continuously variable setpoints are possible within the range of operation. A preferred control circuit includes a signal converter, a ramp generator to smooth the shape of the command or target value signal applied, a position feedback sensor to report the actual position of the actuator, a controller, and a driver, containing an H-bridge, for controlling the pneumatic valve which feeds air into the actuator mechanism. Integration of all these components into a single unit shortens signal paths, improves resistance to electrical noise, and permits faster response time.

    摘要翻译: 定位系统包括集成在单个单元中的致动器,阀(优选气动),位置传感器和电子阀控制器。 连续可变的设定值在操作范围内是可能的。 优选的控制电路包括信号转换器,用于平滑施加的命令或目标值信号的形状的斜坡发生器,用于报告执行器的实际位置的位置反馈传感器,包含H桥的控制器和驱动器 用于控制将空气送入致动器机构的气动阀。 将所有这些组件集成到单个单元中可缩短信号路径,提高对电气噪声的抵抗力,并允许更快的响应时间。

    Hydraulic active boom suspension for a telehandler
    124.
    发明申请
    Hydraulic active boom suspension for a telehandler 失效
    液压活动吊臂悬挂装置

    公开(公告)号:US20050011190A1

    公开(公告)日:2005-01-20

    申请号:US10884716

    申请日:2004-07-02

    申请人: Marcus Bitter

    发明人: Marcus Bitter

    摘要: A suspension for the boom of a loading vehicle includes a hydraulic cylinder for raising and lowering, or for extending and retracting (in the case of a telescopic cylinder), a boom. A direction control valve is provided for selectively routing hydraulic oil to and from at least a head-end chamber of the cylinder. A position sensor senses the position of the hydraulic piston rod, at the start of operation, and sends a sends a target signal representing this beginning position to a control unit which determines the difference between the target signal and a signal representing a current position of the piston rod. When this difference equals a preset difference threshold, a pressure-limiting unit, in the form of a valve or choke, is activated so as to control fluid flow to and from the head-end chamber so as to return the piston rod to its initial position which generated the target signal. Different embodiments have different valve component arrangements for influencing the reaction time of the suspension and/or for adapting the circuitry for use with single-acting, double-acting or telescopic boom cylinders.

    摘要翻译: 用于装载车辆的悬臂的悬架包括用于升降的液压缸,或用于伸缩(在伸缩缸的情况下)悬臂的液压缸。 提供方向控制阀,用于选择性地将液压油路向至少从气缸的头端室排出。 位置传感器在操作开始时感测液压活塞杆的位置,并且发送代表该起始位置的目标信号发送到控制单元,该控制单元确定目标信号和表示当前位置的信号之间的差异 活塞杆。 当该差异等于预设差值阈值时,以阀或扼流圈的形式的压力限制单元被激活,以便控制流入和流出头端室的流体流动,以将活塞杆返回到其初始位置 产生目标信号的位置。 不同的实施例具有不同的阀部件装置,用于影响悬架的反作用时间和/或用于使用于单作用,双作用或伸缩臂的液压缸的电路。

    Hydraulic control circuit for operating a split actuator mechanical mechanism
    126.
    发明授权
    Hydraulic control circuit for operating a split actuator mechanical mechanism 失效
    用于操作分动执行器机械机构的液压控制回路

    公开(公告)号:US06715402B2

    公开(公告)日:2004-04-06

    申请号:US10082862

    申请日:2002-02-26

    IPC分类号: F01B1116

    摘要: A system for simultaneously operating first and second hydraulic cylinders has an inlet node for connection to a source of pressurized fluid and an outlet node for connection to a tank. A two-position, three-way primary control valve has a first port connected to the inlet node, a second port connected to the outlet node, and a common port. A first electrohydraulic proportional valve connects the common port to a first port of the first cylinder, and a second electrohydraulic proportional valve connects the common port to a first port of the second cylinder. A third electrohydraulic proportional valve connects the inlet node to a second port of the first cylinder and a second port of the second cylinder. Selectively operating the primary control valve and one of the third and fourth electrohydraulic proportional valves determines the direction in which the first and second cylinders move. Operation of the first and second electrohydraulic proportional valves meters hydraulic fluid to or from the first and second cylinders to control the rate of that movement.

    摘要翻译: 用于同时操作第一和第二液压缸的系统具有用于连接到加压流体源的入口节点和用于连接到罐的出口节点。 两位三通一级控制阀具有连接到入口节点的第一端口,连接到出口节点的第二端口和公共端口。 第一电动比例阀将公共端口连接到第一气缸的第一端口,并且第二电动比例阀将公共端口连接到第二气缸的第一端口。 第三电液比例阀将入口节点连接到第一气缸的第二端口和第二气缸的第二端口。 选择性地操作主控制阀,并且第三和第四电液比例阀中的一个确定第一和第二气缸移动的方向。 第一和第二电液比例阀的操作将液压流体计量到第一和第二气缸或从第一和第二气缸来控制该运动的速率。

    Apparatus for controlling bounce of hydraulically powered equipment
    127.
    发明授权
    Apparatus for controlling bounce of hydraulically powered equipment 失效
    用于控制液压动力设备反弹的装置

    公开(公告)号:US06705079B1

    公开(公告)日:2004-03-16

    申请号:US10255033

    申请日:2002-09-25

    IPC分类号: F16D3102

    摘要: When a swinging boom driven by a hydraulic cylinder stops, inertia causes continued motion of the boom which increases pressure in a chamber of the hydraulic cylinder. Eventually that pressure reaches a level which causes the boom to reverse direction. Then pressure in an opposite cylinder chamber increases until reaching a level that causes the boom movement to reverse again. This oscillation continues until the motion is dampened by other forces acting on the boom. As a result, an operator has difficulty in properly positioning the boom. To reduce this oscillating effect, a sensor detects when the cylinder chamber pressure increases above a given magnitude and then a determination is made when the rate of change of that pressure is less than a defined threshold. Upon that occurrence, a control value is opened to relieve the pressure in that cylinder chamber.

    摘要翻译: 当由液压缸驱动的摆动悬臂停止时,惯性导致悬臂的持续运动,这增加了液压缸​​的腔室中的压力。 最后,压力达到使吊杆反向的水平。 然后在相对的气缸室中的压力增加,直到达到使得悬臂运动再次反向的水平。 这种振荡持续到运动被作用在起重臂上的其他力阻尼。 结果,操作者难以正确定位吊杆。 为了减小这种振荡效应,传感器检测气缸室压力何时增加到给定量值以上,然后当该压力的变化率小于规定的阈值时进行确定。 在这种情况下,打开控制值以减轻该气缸室中的压力。

    Electrohydraulic circuit for control of a fluid pressure actuator
    128.
    发明申请
    Electrohydraulic circuit for control of a fluid pressure actuator 审中-公开
    用于控制流体压力致动器的电液回路

    公开(公告)号:US20040011192A1

    公开(公告)日:2004-01-22

    申请号:US10442990

    申请日:2003-05-22

    IPC分类号: F16K031/12

    摘要: The circuit comprises first and second power lines connected to a port of a first actuator chamber and to the port of a second actuator chamber, respectively; a supply line and a discharge line connected to a supply source and to a discharge reservoir; a first sliding member valve capable of connecting the first power line to the supply and discharge lines under the control of pilot pressures transmitted to the first sliding member valve by a first pair of pilot lines; and a second sliding member valve capable of connecting the second power line with the supply and discharge lines under the control of pilot pressures transmitted to the second sliding member valve by a second pair of pilot lines. The one line of the first pair of pilot lines and the one line of the second pair of pilot lines transmit the same first pilot pressure signal; the other line of the first pair of pilot lines and the other line of the second pair of pilot lines transmit the same second pilot pressure signal, whereby the actuator can be controlled by only two pilot pressures.

    摘要翻译: 电路包括分别连接到第一致动器室的端口和第二致动器室的端口的第一和第二电力线; 连接到供应源和排放储存器的供应管线和排出管线; 第一滑动构件阀,其能够在通过第一对先导管路传递到第一滑动构件阀的先导压力的控制下将第一电力线连接到供排管线; 以及第二滑动构件阀,其能够在由第二对引导管线传递到第二滑动构件阀的先导压力的控制下将第二动力线与供给排出管线连接。 第一对导频线的一条线和第二对导频线的一条线发送相同的第一先导压力信号; 第一对先导管线的另一条线和第二对先导管线的另一条管线传输相同的第二先导压力信号,由此只能通过两个先导压力来控制致动器。