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    • 104. 发明申请
    • HYDRAULIC DRIVE DEVICE
    • 液压驱动装置
    • WO01051820A1
    • 2001-07-19
    • PCT/JP2001/000057
    • 2001-01-10
    • E02F9/22F15B11/00F15B11/16
    • E02F9/226E02F9/2203E02F9/2232E02F9/2285E02F9/2296F15B11/163F15B2211/20553F15B2211/253F15B2211/30505F15B2211/30535F15B2211/3111F15B2211/351F15B2211/6054F15B2211/651F15B2211/71F15B2211/75
    • A hydraulic drive device having target compensation pressure differences for pressure compensating valves (21a, 21b) set by a pressure difference between a pump delivery pressure and the maximum load pressure and a target LS pressure difference set as a variable value dependent upon the number of rotations of an engine (1), wherein a fixed throttle (32) and a signal pressure variable relief valve (33) are disposed in a maximum load pressure line (35), and a relief set pressure PLMAX' is set to be PLMAX'=PR - PGR + alpha ( alpha is a value smaller than PGR) where the target LS pressure difference is RGR and the set pressure of a main relief valve (30) is PR, whereby, in the combined operation where a plurality of actuators are driven simultaneously, even if a load pressure of any one of the actuators reaches the set pressure of the main relief valve, the pressure compensating valves will not close, the other actuators do not increase their speeds, and thus an excellent combined controllability can be obtained.
    • 一种液压驱动装置,其具有通过泵输送压力和最大负载压力之间的压力差设定的压力补偿阀(21a,21b)的目标补偿压力差和根据转数设定为可变值的目标LS压力差 ,其中在最大负载压力线(35)中设置有固定节流阀(32)和信号压力可变安全阀(33),并且溢流设定压力PLMAX'被设定为PLMAX'= PR-PGR +α(α是小于PGR的值),其中目标LS压力差为RGR,主安全阀(30)的设定压力为PR,由此在多个致动器被驱动的组合操作中 同时,即使任一个致动器的负载压力达到主安全阀的设定压力,压力补偿阀也不会关闭,其他执行器不会增加其速度,因此优异的组合控制 可以获得能力。
    • 105. 发明申请
    • MOBILE HANDLING DEVICE
    • 移动处理设备
    • WO01048387A1
    • 2001-07-05
    • PCT/SE2000/002360
    • 2000-11-29
    • B66C13/28E02F9/22F15B1/02F15B11/00F15B11/02F15B11/16F15B21/14
    • E02F9/2217B66C13/28F15B1/024F15B21/14
    • The present invention relates to a mobile handling device with a hydraulic circuit, which hydraulic circuit (L) comprises a lifting cylinder (1) arranged in a lifting device (100) suitable for handling a variable load and an accumulator (6) for recovering or recycling lowering load energy, the hydraulic circuit also comprising a variable hydraulic machine (3) with two ports (10, 11), which hydraulic machine is capable via a drice unit (D) of emitting full system pressure in two flow directions to said ports, one port (11) being connected to said accumulator (6) and the other port being connected to said lifting cylinder (1). The device is characterised in that the hydraulic circuit (L) comprises a first stop valve (2) arranged in the line between one port (10) of the hydraulic motor and the lifting cylinder (1), and a second stop valve (5) arranged in the line between the hydraulic motor's second port (11) and the accumulator (6), and that the hydraulic circuit (L) comprises a second accumulator (20), which is connected via at least one non-return valve (31) to the line between the hydraulic machine (3) and the lifting cylinder (1).
    • 本发明涉及具有液压回路的移动式处理装置,该液压回路(L)包括设置在适于处理可变负载的提升装置(100)中的升降缸(1)和用于回收或 循环降低负载能量,所述液压回路还包括具有两个端口(10,11)的可变液压机器(3),所述可变液压机器(3)具有两个端口(10,11),该液压机器能够通过一个出口单元(D)沿两个流动方向向所述端口 ,一个端口(11)连接到所述蓄能器(6),另一个端口连接到所述提升缸(1)。 该装置的特征在于,液压回路(L)包括布置在液压马达的一个端口(10)和提升缸(1)之间的管线中的第一截止阀(2)和第二截止阀(5) 布置在液压马达的第二端口(11)和蓄能器(6)之间的线路中,并且液压回路(L)包括通过至少一个止回阀(31)连接的第二储液器(20) 到液压机(3)和提升缸(1)之间的管线。
    • 107. 发明申请
    • VALVE ARRANGEMENT FOR CONTROLLING A FIRST AND SECOND HYDRAULICALLY ACTUATABLE DISTRIBUTING VALVE
    • 阀装置用于第一和第二液压致动的单向阀的先导控制
    • WO01004498A1
    • 2001-01-18
    • PCT/EP2000/005986
    • 2000-06-28
    • F15B11/16F15B13/043G05G9/00
    • F15B13/0433F15B11/16F15B2211/20546F15B2211/3144F15B2211/329F15B2211/6336F15B2211/6355F15B2211/67F15B2211/71
    • The invention relates to a valve arrangement which is used to control a first and second hydraulically actuatable distributing valve (10,11) whereby each of said distributing valves can be proportionally displaced in a first direction from a neutral position under the effect of a control pressure which is exerted in a first control chamber (15,16) and also in a second direction under the effect of a control pressure which is exerted in a second control chamber (17,18). The valve arrangement comprises a proportionally displaceable control pressure valve (25) having a control output (30), whereby a control pressure can be adjusted to varying degrees. Said valve arrangement also comprises a pilot valve arrangement (35), whereby the first control chamber (15) of the first distributing valve (10) can be connected in a first control state to the control output of the control pressure valve and the pressure which is exerted in the first control chamber (16) of the second distributing valve (11) can be discharged. In a second control state, the first control chamber of the first distributing valve can be connected to the control output of the control pressure valve and the pressure exerted in the first control chamber of the first distributing valve can be discharged. Control of the distributing valves should be technically simple and inexpensive. This is achieved by mounting a second control valve arrangement (37), whereby in a first control state the second control chambers of both distributing valves are jointly connected to the control output of the control pressure valve; in a second control state the pressure which is exerted in the second control chambers of both distributing valves is simultaneously discharged. In order to displace a distributing valve in a second direction, the second set of control valves is placed in a first control state and the pressure exerted in the first control chamber of the distributing valve which is to be displaced is discharged while the first control chamber of the distributing valve which is not to be displaced is impinged upon by a control pressure.
    • 本发明涉及一种阀组件(10,11),用于第一和第二液压操作方向控制阀的先导控制被使用,其中的每一个是通过在第一方向上与控制压力施加第一控制腔(15,16)并通过施加中立位置 第二控制腔室(17,18)是可调节的正比于在第二方向上的控制压力。 所述阀组件包括具有控制输出(30),其不同高度的控制压力是可调节的按比例调节的先导压力阀(25)。 此外,它具有经由在第一方向控制阀(10)到先导阀的控制输出的第一开关状态(15)的第一控制腔可连接的切换阀装置(35)和所述第二方向阀(11)的第一控制腔(16)被解除的压力 和在第二开关状态中,第二方向控制阀的导阀的控制输出和连接到所述第一方向控制阀的第一控制腔室的第一控制腔室卸压。 阀的控制都应该尽量用一点点努力和成本。 这是根据本发明在一个第二开关阀装置(37)的存在来实现,经由第一切换状态共同连接到先导阀的控制输出,并且在第二开关状态的双向阀的第二控制腔室,阀双向的第二控制腔室 关节压力被释放。 为了调节在所述第二方向上的位置阀,第二切换阀装置进入所述第一开关状态,和非上进行调整三通阀压力的第一控制腔室被解除,而在第一控制室被调节三通阀用先导压力供给。
    • 108. 发明申请
    • HYDRAULIC DRIVE WITH SEVERAL HYDRAULIC CONSUMERS ALSO COMPRISING A DIFFERENTIAL CYLINDER
    • 具有多也是一个差动缸综合液压消耗液压驱动
    • WO00073667A1
    • 2000-12-07
    • PCT/EP2000/004672
    • 2000-05-23
    • B29C45/82F04B49/00F04B49/08F15B11/16F15B11/17F15B21/14B29C45/68
    • F15B21/14B29C45/82B29C2045/828F04B49/002F04B49/08F15B11/162F15B11/17F15B2211/20553F15B2211/3057F15B2211/3059F15B2211/3111F15B2211/327F15B2211/6309F15B2211/6654
    • The invention relates to a hydraulic drive having several hydraulic consumers (10, 40, 41, 42, 43) also comprising a differential cylinder (10) and located especially in a plastic injection molding machine. A first (25) and a second (26) hydraulic machines are provided, both of which can operate as a pump and as a motor. The first of the two hydraulic machines is connected to a tank (30) by means of a second connection (29) and communicates with a pressure line (19) by means of a first connection (28). The pressure line can be connected to the working chamber (13) of the differential cylinder located on the rear side of the piston rod by means of a check valve (17). The second hydraulic machine is also connected to the pressure line by means of a first connection (32) and can be connected by means of a second connection (33) to a tank via a non-return valve (34) that opens in the direction of the second connection and to the working chamber (14) of the differential cylinder located on the rear side of the piston rod. According to the invention, both hydraulic machines (25, 26) can also be used to supply pressurized medium to at least one additional hydraulic consumer (40, 41, 42, 43). To this end, the at least one additional consumer can be connected to the pressure line by means of the distributing valve (44, 45, 46, 47).
    • 本发明涉及一种具有多个偶数差动缸(10)包括液压消费者其位于特别是在塑料注射成型(10,40,41,42,43)的液压驱动。 有一个第一(25)和第二(26)的液压机存在,这两者都可以作为泵和作为马达操作。 第一两个液压机器的连接到第二端子(29)与油箱(30)和被连接到第一端子(28)经由单向阀连接到所述差动缸的kolbenstangenabseitigen工作空间(13)的压力管线(19)( 17)可连接。 第二液压单元也被连接到第一端子(32)与压力管路,并且经由朝向止回阀(34)与油箱和经由单向阀(18)与活塞杆侧的工作空间(第二连接开口的第二端子(33) 14)的差动缸的可连接。 根据本发明,两个液压机构(25,26)也可通过与压力介质提供至少一个另外的液压耗能器(40,41,42,43)。 为了这个目的,通过一个方向控制阀,所述至少一个另外的液压耗能器(44,45,46,47)可连接到所述压力管中。