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    PILOT CONTROL FOR TWO HYDRAULICALLY ACTUATABLE DISTRIBUTION VALVES
    12.
    发明申请
    PILOT CONTROL FOR TWO HYDRAULICALLY ACTUATABLE DISTRIBUTION VALVES 审中-公开
    PILOT控制两个液压驱动阀

    公开(公告)号：WO1997049922A1

    公开(公告)日：1997-12-31

    申请号：PCT/EP1997003112

    申请日：1997-06-14

    Applicant: MANNESMANN REXROTH AG ,  BREUNIG, Alfred ,  ROTH, Dieter

    Inventor： MANNESMANN REXROTH AG

    IPC: F15B13/042

    CPC classification number: F15B13/042 ,  F15B11/16 ,  F15B2211/30505 ,  F15B2211/3116 ,  F15B2211/3144 ,  F15B2211/50527 ,  F15B2211/5153 ,  F15B2211/5157 ,  F15B2211/55 ,  F15B2211/6355 ,  F15B2211/67

    Abstract: The invention relates to a pilot control for two hydraulically actuatable distribution valves (11, 12) with a hydraulic (51) or electric (75) pilot control device. To move a first distribution valve (11) from a neutral position in opposite directions, it has a handle (56) which can be moved from a neutral position in various directions. The pilot control device or two electrically adjustable pilot valves have two control outputs (78, 18) via which a pilot control pressure can be applied to a first control pressure chamber (17) in the first distribution valve (11) for adjustment in one direction and a second control pressure chamber (18) for adjustment in the other direction. Particularly to obtain a less complex and cheaper pilot control for the case where it is unnecessary or undesired for both distribution valves to be actuated at the same time, there is an electromagnetically operable changeover valve (22) which connects one control output (78) of the pilot control device (51) or an electrically adjustable pilot control valve (77) in its first switching position to a control pressure chamber (17) in the first distribution valve (11) and to one in the second valve (12) in its second position. The pilot control device is thus simplified or the number of electrically adjustable pilot control valves is reduced.

    Abstract translation: 本发明涉及用于2个操作的阀（11，12）与液压（51）或电气（75）的导频控制装置的前馈控制。 这具有用于从以相反方向的中立位置驱动第一方向控制阀（11），把手（56），其是在从中立位置不同的方向转动。 此外，导频控制装置分别两个电可调先导阀具有两个控制输出（78，18）在其上（对于调整在一个方向上，一个第一控制压力室（17）和用于在另一个方向上的调整，所述第一方向阀11的第二控制压力室（18） ）可以与先导压力来采取行动。 为了使两个方向控制阀不一定或理想地致动以在特定的同时，得到一种廉价的和成本有效的前馈控制的情况下，一个可电磁操作的阀（22）设置，所述引导装置（51）或一个的控制输出端（78） 可电动调节的先导阀（77）在其第一切换位置由第二方向控制阀（12）的控制压力空间中的第一方向阀（11）并连接在其第二切换位置的控制压力室（17）。 以这种方式，导频控制装置被简化或电动调节先导阀减少的数量。

    MANUALLY OPERABLE HYDRAULIC PILOT CONTROL
    13.
    发明申请
    MANUALLY OPERABLE HYDRAULIC PILOT CONTROL 审中-公开
    手动操作液压试点单位

    公开(公告)号：WO1997047890A1

    公开(公告)日：1997-12-18

    申请号：PCT/EP1997002876

    申请日：1997-06-03

    Applicant: MANNESMANN REXROTH AG ,  BÜTTNER, Peter ,  JELITTE, Lucia ,  STAHL, Konrad

    Inventor： MANNESMANN REXROTH AG

    IPC: F15B13/042

    CPC classification number: F15B13/0422 ,  Y10T137/86702 ,  Y10T137/87064

    Abstract: The invention relates to a manually operable hydraulic pilot control with a continuously adjustable pressure reducing valve (9), having a housing (10) and, in a through drilling (11) therein, an adjusting piston (50). This piston can be biased by a control spring (61) to allow a connection between a pressure inlet (P) and a control outlet (A) and can be biased by a pressure applied in the control outlet (A) to prevent this connection. The control spring (61) is tensioned between a first fixed stop (59) on the control piston (50) and a spring washer (56) which can be applied to a second fixed stop (54) on the control piston (50) and can be conveyed by an axially guided pushrod (14) at a first open end of the housing drilling (11) and supported at a distance from the second stop (54) on the control piston (50). In order to be able to adjust the free travel until the initial jump in the control pressure, the control piston (50) can be moved in a control sleeve (20) fitted in the housing drilling (11), the axial position of which is adjustable from the second open end of the housing drilling (11). An adjusting spring (62) tensioned between the control piston (50) and an adjustable stop (45) integral with the housing makes it possible to adjust the extent of the pressure jump.

    Abstract translation: 本发明涉及一种具有连续可调减压阀（9），其具有壳体（10）可手动操作的液压先导控制装置和在连续的壳体孔（11）的控制活塞（50）（以打开压力输入P之间的连接方面 ）和一个控制输出（a）控制弹簧（61）和（反义的控制输出的压力）可以采取行动。 所述控制活塞（50）和一个弹簧板（56）的第一固定止动件（59）之间的控制弹簧（61）被夹紧时，控制活塞（50）的第二固定止动件（54）的可从一个位于该第一端部施加和开放 干，壳体孔（11），其位于轴向地引导（14）从所述控制活塞（50）的所述第二止动件（54）一起携带和间隔开的可支持。 另外，为了调整所述自由行程与控制压力的初始跳跃，所述控制活塞（50）被引入到所述壳体孔（11）控制套筒（20）移动，从壳体孔（11）的第二开口端的轴向位置是由可调节的。 压力跳跃的高度可以通过调节弹簧（62）被所述控制活塞（50）和一个可调节的壳体固定止动件（45）之间夹紧被调整。

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