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    Control apparatus for hydraulically operated consumers
    1.
    发明授权
    Control apparatus for hydraulically operated consumers 失效
    用于液压操作的消费者的控制装置

    公开(公告)号：US3906838A

    公开(公告)日：1975-09-23

    申请号：US36701273

    申请日：1973-06-04

    Applicant: BOSCH GMBH ROBERT

    Inventor： HOFER FRIEDRICH-WILHELM

    IPC: A01B63/00 ,  A01B63/10 ,  F15B11/08 ,  F15B11/16 ,  F15B13/02

    CPC classification number: F15B13/02 ,  F15B11/16 ,  F15B2211/30505 ,  F15B2211/324 ,  F15B2211/327 ,  F15B2211/329 ,  F15B2211/40515 ,  F15B2211/41509 ,  F15B2211/41581 ,  F15B2211/428 ,  F15B2211/45 ,  F15B2211/46 ,  F15B2211/6355 ,  F15B2211/7052 ,  F15B2211/71 ,  F15B2211/781

    Abstract: Apparatus which controls the flow of pressurized hydraulic fluid from a pump to a primary consumer or to a secondary consumer and from the primary consumer to the tank has a distributor valve whose spool changes its position in response to changes of fluid pressure in a control chamber wherein the fluid pressure is controlled by a pilot valve which can be actuated manually, electrically or by means of a fluid. A check valve which is interposed between the distributor valve and the primary consumer controls the speed of movement of the spool of the distributor valve to that position in which the primary consumer receives fluid. The secondary consumer receives fluid whenever the primary consumer is sealed from the pump. A further pilot-controlled valve is provided to control the flow of fluid from the primary consumer to the tank.

    Abstract translation: 控制加压液压流体从泵到主要消费者或次要消费者以及从初级消费者到罐的流动的装置具有分配器阀，其分配阀根据控制室中的流体压力的变化改变其位置，其中， 流体压力由可以手动，电动或通过流体致动的先导阀来控制。 介于分配器阀和主要消耗品之间的止回阀控制分配器阀芯的运动速度到主要消费者接收流体的位置。 当主要消费者从泵密封时，次级消费者接收流体。 提供另一个先导控制阀以控制从主要消耗器到罐的流体流动。

    Control apparatus for the cutting platform of a harvesting machine
    2.
    发明授权
    Control apparatus for the cutting platform of a harvesting machine 失效
    收割机切割平台的控制装置

    公开(公告)号：US3623301A

    公开(公告)日：1971-11-30

    申请号：US5195270

    申请日：1970-07-02

    Applicant: BOSCH GMBH ROBERT

    Inventor： HOFER FRIEDRICH-WILHELM

    IPC: A01B63/10 ,  A01D34/24 ,  A01D41/14 ,  G05D3/12 ,  A01D67/00

    CPC classification number: A01B63/10 ,  A01D34/246 ,  A01D41/141 ,  G05D3/12 ,  Y10S56/15

    Abstract: THE LEVEL OF THE CUTTING PLATFORM OF A HARVESTING MACHINE ON OR ABOVE GROUD IS DETERMINED BY SETTING POTENTIOMETERS TO A DESIRED PRESSURE IN THE LIFTING MOTOR OF THE PLATFORM, AND TO A DESIRED POSITION OF THE SAME. WHEN THE SET PRESSURE OR PLATFORM POSITION IS DIFFERENT FROM ACTUAL PRESURE OR POSITION, AS REPRESENTED BY OTHER POTENTIOMETERS, VOLTAGE DIFFERENTIALS ARE PRODUCED AND COMPARED, AND A LIFTING MOTOR IS ACCORDINGLY CONTROLLED. WHILE THE CUTTING PLATFORM RESTS ON THE GROUND, THE LIFTING MOTOR CARRIES A SELECTABLE PART OF THE WEIGHT OF THE PLATFORM. WHEN THE ACTUAL PRESSURE IN THE LIFTING MOTOR APPROCHES IN THIS POSITION A MAXIMUM, A CONTROL SWITCH IS ACTUATED AND CONTROL MEANS RENDER THE POSITION REPRESENTING POTENTIOMETERS OPERATIVE SO THAT THE MAXIMUM PRESSURE IS USED FOR LIFTING AND MAINTAINING THE PLATFORM ABOVE GROUND. THE PLATFORM CAN BE PROVIDED WITH GROUND CONTOUR FEELERS TO THAT A PLATFORM LEVEL ABOVE, BUT NEAR THE GROUND, IS AUTOMATICALLY CONTROLLED IN ACCORDANCE WITH THE FELLER POSITION.

    4.
    发明专利
    未知

    公开(公告)号：FR2514083A1

    公开(公告)日：1983-04-08

    申请号：FR8216759

    申请日：1982-10-06

    Applicant: BOSCH GMBH ROBERT

    Inventor： HOFER FRIEDRICH-WILHELM ,  KLEINSCHMIDT HEINZ ,  OLBRICH GOTTFRIED

    IPC: B66F9/22 ,  F15B11/16 ,  F15B13/06

    Abstract: The invention proposes a hydraulic control device (10) with at least two directional control valves (11, 12) and a flow regulator (17) for as independent as possible control of at least two pressure medium flows to the hydraulic consumption units of a stacker truck. The directional control valve (11) assigned to the total and residual flow is situated upstream of the directional control valve (12) assigned to the constant flow, in the neutral circulation conduit (32), controls a connection (35, 37) passed directly to the tank (21) from the residual-flow outlet (36) of the flow regulator (17) via the first directional control valve (11) and has a feed connection (23) which, in parallel with the neutral circulation conduit (32), has a connection to the pressure medium source (18). A residual-flow conduit passing through the constant-flow directional control valves (12, 13) is thereby eliminated and, given parallel actuation of both directional control valves (11, 12) and interruption of the constant-flow drop, interruptions in the control sequence and oscillations caused by excessively large jumps in the pressure-medium flow are eliminated. The control device (10) can be expanded in a simple manner to include the handling of additional flows and functions.

    5.
    发明专利
    未知

    公开(公告)号：FR2498698A1

    公开(公告)日：1982-07-30

    申请号：FR8201264

    申请日：1982-01-27

    Applicant: BOSCH GMBH ROBERT

    Inventor： HOFER FRIEDRICH-WILHELM

    IPC: A01B63/10 ,  F15B13/04 ,  F16K11/20 ,  F16K47/02

    Abstract: The invention proposes a control device (10) for a hydraulically driven work unit (82, 86). The device can be used as a mechanically actuated control valve for controlling the lifting gear in agricultural vehicles. A locking block (14) and a reversing valve (12) are controlled by a pilot control slide (36) in which is arranged an auxiliary slide (68) which prevents jamming. The pilot control slide (36) has a control edge (64) making a connection into a working line (52) leading to the power lift (82) and is connected to the auxiliary slide (68) and a restriction (48) in such a way that a proportional lifting range (98) is achieved as a function of the stroke of the pilot control slide (36), the said range being limited in the neutral direction by a partial oil jump (97) and making a transition towards the end of the stroke into an oil jump (99) by the elimination of the control pressure drop via the control edge (64).

    Hydraulic control for tractor
    6.
    发明专利
    Hydraulic control for tractor 未知

    公开(公告)号：FR2571925A1

    公开(公告)日：1986-04-25

    申请号：FR8515492

    申请日：1985-10-18

    Applicant: BOSCH GMBH ROBERT

    Inventor： HOFER FRIEDRICH-WILHELM

    IPC: A01B63/102 ,  A01B63/108 ,  B62D49/02 ,  A01B63/111

    Abstract: The single servo pump (18) provides fluid for the front- and rear hitches. The front- and rear hitches can be controlled in parallel, with a pressure control to distribute the fluid flow. The control operates hydraulically and requires no electro-hydraulic elements. The front hitch is supplied by interrupting the supply to the rear hitch and in response to a fine control.

    Tractive forces regulator for lower draw-bar of e.g. plough - uses force transducer to measure drawbar force and to regulate operation of solenoid valves which control plough height
    8.
    发明专利
    Tractive forces regulator for lower draw-bar of e.g. plough - uses force transducer to measure drawbar force and to regulate operation of solenoid valves which control plough height 未知

    公开(公告)号：FR2494075A1

    公开(公告)日：1982-05-21

    申请号：FR8121290

    申请日：1981-11-13

    Applicant: BOSCH GMBH ROBERT

    Inventor： HOFER FRIEDRICH-WILHELM

    IPC: A01B63/112 ,  G05D15/00

    Abstract: The tractive effort in the draw bars of a farm implement, partic. a plough, is regulated by a control circuit comprising a force transducer, an electronic feedback control circuit, and an output signal to the electrically actuated hydraulic control valve which raises or lowers the plough, thus reducing or increasing the tension in the draw bars. The plough (15) is attached by an upper (12) and lower (13) draw bar to the tractor (11). The height of the plough is controlled by a hydraulic actuator (23) which, under control of solenoid valves, operates a linkage (25) which acts on the lower drawbar to raise or lower it. The force transducer (37) fitted between the draw bar and the tractor, supplies an electric signal to an electronic control circuit (28) which in turn regulates the solenoid valves (17) supplying (21,22) the hydraulic actuator (23), thus controlling plough height.

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