METERLESS HYDRAULIC SYSTEM HAVING DISPLACEMENT CONTROL VALVE
    81.
    发明申请
    METERLESS HYDRAULIC SYSTEM HAVING DISPLACEMENT CONTROL VALVE 有权
    具有位移控制阀的无水液压系统

    公开(公告)号:US20130048117A1

    公开(公告)日:2013-02-28

    申请号:US13222895

    申请日:2011-08-31

    IPC分类号: F15C3/00 F16K11/20

    摘要: A hydraulic system is disclosed. The hydraulic system may have a pump, a tank, a displacement actuator having first and second chambers, a regeneration valve, and a load-holding valve. The hydraulic system may also have a displacement control valve including a valve element, and a stationary cage portion at least partially forming a high-pressure passage fluidly connecting the pump and valve element, a low-pressure passage fluidly connecting the valve element and tank, a first displacement actuator passage fluidly connecting the valve element and first chamber, a second displacement actuator passage fluidly connecting the valve element and second chamber, a load-holding control passage fluidly connecting the valve element and load-holding valve, and a regeneration control passage fluidly connecting the valve element and regeneration valve. The displacement control valve may also include a movable cage portion that is movable to selectively restrict fluid flow through only the first and second displacement actuator passages.

    摘要翻译: 公开了一种液压系统。 液压系统可以具有泵,罐,具有第一和第二室的排量致动器,再生阀和负载保持阀。 液压系统还可以具有包括阀元件的位移控制阀和至少部分地形成流体连接泵和阀元件的高压通道的静止保持架部分,流体连接阀元件和油箱的低压通道, 流体连接阀元件和第一室的第一排量致动器通道,流体连接阀元件和第二室的第二排量致动器通道,流体连接阀元件和负载保持阀的负载保持控制通路,再生控制通道 流体连接阀元件和再生阀。 排量控制阀还可以包括可移动的保持架部分,其可移动以选择性地限制流体流过仅第一和第二排量致动器通道。

    METERLESS HYDRAULIC SYSTEM HAVING LOAD-HOLDING BYPASS
    82.
    发明申请
    METERLESS HYDRAULIC SYSTEM HAVING LOAD-HOLDING BYPASS 有权
    具有负载旁路的无人液压系统

    公开(公告)号:US20130047599A1

    公开(公告)日:2013-02-28

    申请号:US13222990

    申请日:2011-08-31

    摘要: A hydraulic system is disclosed. The hydraulic system may have a pump, a hydraulic actuator, and first and second passages fluidly connecting the pump to the hydraulic actuator in a closed-loop. The hydraulic system may also have a control valve, and a load-holding valve configured to selectively lock movement of the hydraulic actuator. The load-holding valve may include a valve block at least partially defining a pump passage, an actuator passage, a control passage, a restricted passage connecting the actuator passage and the control passage, and a bypass passage connecting the actuator passage and the control passage. The load-holding valve may also include a valve element movable between a first position at which flow between the pump and the hydraulic actuator is blocked, and a second position at which fluid is allowed to flow between the pump and the hydraulic actuator, the valve element being spring-biased toward the first position.

    摘要翻译: 公开了一种液压系统。 液压系统可以具有泵,液压致动器以及在闭环中将泵流体地连接到液压致动器的第一和第二通路。 液压系统还可以具有控制阀和构造成选择性地锁定液压致动器的运动的负载保持阀。 负载保持阀可以包括至少部分地限定泵通道的阀块,致动器通道,控制通道,连接致动器通道和控制通道的限制通道以及连接致动器通道和控制通道的旁通通道 。 负载保持阀还可以包括阀元件,该阀元件可以在泵和液压致动器之间的流动被阻挡的第一位置和允许流体在泵和液压致动器之间流动的第二位置之间移动,阀 元件被弹簧偏置到第一位置。

    Concrete agitating drum driving device
    83.
    发明授权
    Concrete agitating drum driving device 有权
    混凝土搅拌滚筒驱动装置

    公开(公告)号:US08104947B2

    公开(公告)日:2012-01-31

    申请号:US12309355

    申请日:2007-07-13

    IPC分类号: B28C5/18

    摘要: A concrete agitating drum (1) is driven by a hydraulic motor (81). A connection switch-over valve (20) is arranged to have a function to regulate a flow cross-sectional area of pressurized working oil supplied to the hydraulic motor (81) from a variable capacity hydraulic pump (10). The variable capacity hydraulic pump (10) is driven by a combustion engine (60) together with a charge pump (11). When a discharge pressure of the charge pump (11) is low, the connection switch-over valve (20) maintains a small flow cross-sectional area to rotate the agitating drum (1) at a low rotation speed so that fuel consumption of the combustion engine (60) is suppressed to be small. When the discharge pressure of the charge pump (11) becomes high, the connection switch-over valve (20) enlarges the flow cross-sectional area, thereby realizing a rated rotation speed of the agitating drum (1).

    摘要翻译: 混合搅拌滚筒(1)由液压马达(81)驱动。 连接切换阀(20)被配置为具有调节从可变容量液压泵(10)供给到液压马达(81)的加压工作油的流动横截面积的功能。 可变容量液压泵(10)与电动泵(11)一起由内燃机(60)驱动。 当电荷泵(11)的排出压力低时,连接切换阀(20)保持小的流动横截面面积,以使转动鼓(1)以低转速旋转,从而使得燃料消耗 内燃机(60)被抑制得很小。 当电荷泵(11)的排出压力变高时,连接切换阀(20)扩大流动横截面积,从而实现搅拌滚筒(1)的额定转速。

    CONCRETE AGITATING DRUM DRIVING DEVICE
    84.
    发明申请
    CONCRETE AGITATING DRUM DRIVING DEVICE 有权
    混凝土驱动装置

    公开(公告)号:US20090282824A1

    公开(公告)日:2009-11-19

    申请号:US12309355

    申请日:2007-07-13

    IPC分类号: F15B11/02

    摘要: A concrete agitating drum (1) is driven by a hydraulic motor (81). A connection switch-over valve (20) is arranged to have a function to regulate a flow cross-sectional area of pressurized working oil supplied to the hydraulic motor (81) from a variable capacity hydraulic pump (10). The variable capacity hydraulic pump (10) is driven by a combustion engine (60) together with a charge pump (11). When a discharge pressure of the charge pump (11) is low, the connection switch-over valve (20) maintains a small flow cross-sectional area to rotate the agitating drum (1) at a low rotation speed so that fuel consumption of the combustion engine (60) is suppressed to be small. When the discharge pressure of the charge pump (11) becomes high, the connection switch-over valve (20) enlarges the flow cross-sectional area, thereby realizing a rated rotation speed of the agitating drum (1).

    摘要翻译: 混合搅拌滚筒(1)由液压马达(81)驱动。 连接切换阀(20)被配置为具有调节从可变容量液压泵(10)供给到液压马达(81)的加压工作油的流动横截面积的功能。 可变容量液压泵(10)与电动泵(11)一起由内燃机(60)驱动。 当电荷泵(11)的排出压力低时,连接切换阀(20)保持小的流动横截面面积,以使转动鼓(1)以低转速旋转,从而使得燃料消耗 内燃机(60)被抑制得很小。 当电荷泵(11)的排出压力变高时,连接切换阀(20)扩大流动横截面积,从而实现搅拌滚筒(1)的额定转速。

    Pressure-compensating directional control valve
    85.
    发明授权
    Pressure-compensating directional control valve 有权
    压力补偿方向控制阀

    公开(公告)号:US07581487B2

    公开(公告)日:2009-09-01

    申请号:US11802596

    申请日:2007-05-24

    IPC分类号: F15B11/00 F15B11/05

    摘要: A pressure-compensating directional control valve, for actuating hydraulic actuators, comprising at least one modular valve body, with one through receptacle for a slidable shuttle, a driving fluid delivery port connected to a pump, a discharge fluid port, a first output opening and a second output opening, connected to the first and second chamber, of a hydraulic actuator, at least one bridge for selective communication, by way of the shuttle, of the delivery port with the first or second chambers of the actuator, for actuation thereof, a unidirectional hydrostat connected to the bridge to draw selectively a pressure signal of the load of the actuator, the signal for adjusting selectively the delivery pressure of the pump so as to keep substantially constant the pressure drop between the delivery port and the actuator in any load condition.

    摘要翻译: 一种用于致动液压致动器的压力补偿方向控制阀,包括至少一个模块化阀体,具有用于滑动梭的一个通孔,连接到泵的驱动流体输送端口,排出流体端口,第一输出开口和 连接到第一和第二室的第二输出开口,液压致动器,至少一个桥,用于通过梭子通过传动口与致动器的第一或第二腔室选择性地连通,用于致动, 连接到桥上的单向压力稳压器,以选择性地画出致动器的负载的压力信号,用于选择性地调节泵的输送压力的信号,以便在任何负载下保持输送端口和致动器之间的压降基本恒定 条件。

    Electrohydraulic Solar Panel Carrier Adjusting Device
    87.
    发明申请
    Electrohydraulic Solar Panel Carrier Adjusting Device 有权
    电液太阳能电池板调节装置

    公开(公告)号:US20080264363A1

    公开(公告)日:2008-10-30

    申请号:US12051014

    申请日:2008-03-19

    IPC分类号: F01L9/02 H01L31/042

    摘要: A solar panel carrier T is provided at a sub-structure U such that it can be rotated and tilted by means of hydrostatic rotation and tilt motors M, M′. In an electrohydraulic adjusting device for the solar panel carrier T a motor pump aggregate 8 is connected to the hydrostatic motors. Within working lines A, B of the tilt hydrostatic motor M at least one tilt control system K is provided, which comprises valve components and a pilot pressure circuit. The tilt control system K comprises pressure actuated blocking valves or load holding valves LHVA, LHVB. For automatically adjusting a protected position S of the carrier T a suction line N is provided at the side of the hydrostatic tilt motor facing to the blocking valves or load holding valves. The suction line N is surveyed by a monitoring solenoid 18 and is opened depending on initial pressure conditions in case of switching off the electric power and/or in case of an electric breakdown. In this fashion the protected position S of the carrier T can be adjusted without consuming primary energy by use of the weight load of the carrier T itself.

    摘要翻译: 太阳能电池板载体T设置在子结构U处,使得其可以通过静水旋转和倾斜电动机M,M'旋转和倾斜。 在用于太阳能电池板载体T的电动液压调节装置中,电机泵集合体8连接到静液压马达。 在倾斜静液压马达M的工作线A,B中,提供至少一个倾斜控制系统K,其包括阀部件和先导压力回路。 倾斜控制系统K包括压力致动的阻断阀或负载保持阀LHVA,LHV B。 为了自动调整载体T的受保护位置S,在静液压倾斜电动机的面向阻塞阀或负载保持阀的一侧设置吸入管线N. 吸入管线N由监控螺线管18测量,并且在关闭电力的情况下和/或在电击穿的情况下根据初始压力条件打开。 以这种方式,可以通过使用载体T本身的重量载荷来调节载体T的受保护位置S而不消耗一次能量。

    HYDRAULIC VALVE ARRANGEMENT
    88.
    发明申请
    HYDRAULIC VALVE ARRANGEMENT 有权
    液压阀安装

    公开(公告)号:US20080224073A1

    公开(公告)日:2008-09-18

    申请号:US11956833

    申请日:2007-12-14

    IPC分类号: F16K31/12

    摘要: The invention concerns a hydraulic valve arrangement (1) with several valve modules (2-6), each having a supply channel arrangement with a high-pressure channel (7) and a low-pressure channel (8), a working connection arrangement with at least one working connection (A, B), a directional valve arrangement (15, 16) between the supply channel arrangement and the working connection arrangement and a compensation arrangement (19, 28). It is endeavoured to improve the control possibilities. For this purpose, it is provided that in at least one valve module (3, 5) the compensation arrangement is a pre-compensation arrangement (19) and in at least one other valve module (4, 6) the compensation arrangement is a post-compensation arrangement (28).

    摘要翻译: 本发明涉及具有多个阀模块(2-6)的液压阀装置(1),每个阀模块具有一个具有高压通道(7)和低压通道(8)的供应通道装置,工作连接装置具有 在所述供应通道装置和所述工作连接装置之间的至少一个工作连接(A,B),方向阀装置(15,16)和补偿装置(19,28)。 努力提高控制的可能性。 为此,规定在至少一个阀模块(3,5)中,补偿装置是预补偿装置(19),并且在至少一个其它阀模块(4,6)中,补偿装置是一个柱 - 补偿安排(28)。

    Actuator
    89.
    发明申请
    Actuator 审中-公开
    执行器

    公开(公告)号:US20060207247A1

    公开(公告)日:2006-09-21

    申请号:US11377407

    申请日:2006-03-17

    IPC分类号: F16D31/02

    摘要: An actuator comprises a driving section driven and rotated by a supplied current, a pump mechanism driven by a driving force supplied from the driving section to suck and discharge pressure oil, and a cylinder mechanism having a piston displaceable by the pressure oil supplied from the pump mechanism. When a pressure of the pressure oil is at or greater than a predetermined value in the cylinder mechanism, a relief valve provided in the pump mechanism is opened to thereby discharge the pressure oil into a pressure oil-charging chamber of the pump mechanism. Pressure within a first or second cylinder chamber of the cylinder mechanism and into which the pressure oil is introduced is maintained substantially constant.

    摘要翻译: 致动器包括由供给电流驱动和旋转的驱动部,由从驱动部供给的驱动力驱动以吸入和排出压力油的泵机构,以及具有可由泵供给的压力油移动的活塞的气缸机构 机制。 当在气缸机构中压力油的压力等于或大于预定值时,设置在泵机构中的安全阀打开,从而将压力油排放到泵机构的压力充油室中。 气缸机构的第一或第二气缸室内的压力保持在基本上恒定的压力油中。