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    DISPOSITIF DE COMMANDE DE DIRECTION DE VEHICULE INDUSTRIEL ET VEHICULE EQUIPE D'UN TEL DISPOSITIF
    2.
    发明公开
    DISPOSITIF DE COMMANDE DE DIRECTION DE VEHICULE INDUSTRIEL ET VEHICULE EQUIPE D'UN TEL DISPOSITIF 有权
    一种用于控制车辆的转向和产业这样一个设备全面的汽车

    公开(公告)号：EP1893467A1

    公开(公告)日：2008-03-05

    申请号：EP05776457.3

    申请日：2005-06-14

    申请人： VOLVO COMPACT EQUIPMENT SAS

    发明人： FLOREAN, Gilles

    IPC分类号： B62D7/15 ,  F15B20/00

    CPC分类号： B62D7/1509 ,  B62D7/1572 ,  F15B7/003 ,  F15B11/006 ,  F15B2211/20538 ,  F15B2211/212 ,  F15B2211/30575 ,  F15B2211/31576 ,  F15B2211/327 ,  F15B2211/7054 ,  F15B2211/71

    摘要： The invention relates to a device for controlling the steering of a commercial vehicle comprising: two front wheels (126, 127) that can be oriented according to a first turning angle by means of at least one first actuator (120); two rear wheels (136, 137) that can be oriented according to a second turning angle by means of at least one second actuator (130); and a power circuit (101) comprising a pressurised fluid source and power components (111, 112, 113, 114, 115) that can transmit the hydraulic power to the actuators, said power components (111, 112, 113, 114, 115) being controllable in such a way as to configure the power circuit (101) according to different coupling modes between the front wheels (126, 127) and the rear wheels (136, 137). The inventive device can be characterised in that it comprises a control circuit (151) containing a pressurised fluid source and control components (153, 154, 155, 156, 163) that are electrically controlled by an electrical control unit, said control components (153, 154, 155, 156, 163) being able to transmit hydraulic commands relating to one of said determined coupling modes to the power components (111, 112, 113, 114, 115). Furthermore, the control components are hydraulically connected in such a way that, in the event of a fault in the electrical control of the control components (153, 154, 155, 156, 163), the commands are upheld in such a way as to permanently maintain the configuration of the power circuit (101) according to the current coupling mode between the front wheels (126, 127) and the rear wheels (136, 137).

    STEERING SYSTEM OF WORKING TRUCK
    3.
    发明公开
    STEERING SYSTEM OF WORKING TRUCK 审中-公开
    指导工作卡车

    公开(公告)号：EP1479595A4

    公开(公告)日：2007-07-04

    申请号：EP03743033

    申请日：2003-02-26

    申请人： HITACHI CONSTRUCTION MACHINERY

    发明人： TOYOOKA TSUKASA ,  SUGAYA MAKOTO ,  MATSUSHITA MAKOTO ,  SATO KENSUKE ,  NAGASHIMA YUUJI

    IPC分类号： B62D6/00 ,  B62D5/10 ,  B62D7/14 ,  B62D7/15 ,  B66F9/065 ,  B66F9/075 ,  B62D5/07

    CPC分类号： B62D7/1572 ,  B62D7/1509 ,  B66F9/0655 ,  B66F9/07568

    摘要： Among mode lamps (38a, 38b, 38c) of a mode (38), a lamp corresponding to the current steering mode is lighted in yellow and other lamps are lighted in green or unlighted thus indicating whether front wheels (1, 1) and rear wheels (2, 2) are in neutral position or not. A controller (39) does not operate a mode switching valve (24) even if so designated by a mode changeover switch (35) when the front and rear wheels are not in neutral position but operates the mode switching valve (24) into a steering mode that agrees with a designation from the mode changeover switch (35) when the front and rear wheels are in neutral position. Furthermore, a steering mode corresponding to that of the mode switching valve (24) is displayed constantly as a current steering mode on the mode display (38). A highly reliable steering system exhibiting excellent operability can thereby be provided for a working truck where the steering mode of front and rear wheels can be switched between two-wheel steering and four-wheel steering.

    FOUR-WHEEL STEERING SYSTEM FOR VEHICLE
    8.
    发明公开
    FOUR-WHEEL STEERING SYSTEM FOR VEHICLE 失效
    四轮转向系统的车辆。

    公开(公告)号：EP0682618A1

    公开(公告)日：1995-11-22

    申请号：EP95902315.0

    申请日：1994-11-22

    申请人： HYUNDAI MOTOR COMPANY

    发明人： LEE, Un, Koo

    IPC分类号： B62D6 ,  B62D7

    CPC分类号： B62D7/1572

    摘要： A four-wheel steering system for a vehicle including a front wheel steering part having a front direction control valve (18) having ports (28, 30) which close and open in accordance with a rotating direction of a steering wheel (16), and a front actuator (10) for pushing or pulling a tie rod (12, 14) connected to a front wheel (2, 4), an electronic control unit (ECU) for controlling a steering of the rear wheels (38, 40) in response to signals transmitted from a vehicle speed sensor (60), a steering angle sensor (58) and a steering amount feedback sensor (68, 70, 72, 74) and a rear wheel steering part having first and second solenoid valves (54, 56) independently controlled by said electronic control (ECU), first and second rear direction control valves (42, 44) independently controlled by said electronic control unit (ECU) and first and second rear wheel actuators (46, 48) for pulling or pushing said rear wheels (38, 40) selectively or simultaneously.