利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

294 条记录 (耗时 0.014 秒)

    PRESSURISED FLUID SUPPLY SYSTEM FOR AN AGRICULTURAL VEHICLE
    6.
    发明公开
    PRESSURISED FLUID SUPPLY SYSTEM FOR AN AGRICULTURAL VEHICLE 审中-公开

    公开(公告)号：EP4015349A1

    公开(公告)日：2022-06-22

    申请号：EP21205935.6

    申请日：2021-11-02

    申请人： AGCO International GmbH

    发明人： REITEMANN, Gabriel

    IPC分类号： B62D5/07 ,  B62D5/30

    摘要： In a hydraulic system (10) for a tractor, a main pump (12) supplies fluid to a steering system (22) through a steering circuit (24) and a second pump (14) supplies fluid to a cooling fan motor (42). The second pump is connected with the steering circuit to provide a second a source of fluid to the steering system when the main pump is unable to meet demand. A prioritisation valve (48) regulates the flow of fluid from the second pump to the motor. The valve has a first operative configuration (48a) in which fluid flow from the second pump to the motor is unrestricted and a second operative configuration (48b) in which fluid flow from the second pump to the motor is blocked or restricted. The valve adopts the second operative configuration when the pressure in the steering circuit is below a first threshold value. The second pump acts as a secondary pump for the steering system and drives a cooling fan.

    WORK VEHICLE
    8.
    发明公开
    WORK VEHICLE 审中-公开

    公开(公告)号：EP3693215A1

    公开(公告)日：2020-08-12

    申请号：EP19212318.0

    申请日：2019-11-28

    申请人： Kubota Corporation

    发明人： NAKAJI, Masaru ,  TSUCHIYA, Takeshi

    IPC分类号： B60P1/16 ,  B60P1/04 ,  B62D5/07

    摘要： A work vehicle includes a bypass passage (35) formed in an operational valve (20) of a dump cylinder (9) and configured to feed pressure oil from a hydraulic pump (14) to a power steering device (10) when the operational valve (20) is under a neutral state and an oil feeding passage (36) equipped with an orifice, the orifice-equipped oil feeding passage (36) being configured to feed the pressure oil from the hydraulic pump (14) to a rod side oil chamber (9a) of the dump cylinder (9) when the operational valve (20) is under the neutral state.