利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

117 records (took 0.016 seconds)

    ENERGY RECOVERY AND REUSE SYSTEM FOR LOADER-DIGGER AND CONTROL METHOD THEREFOR, AND LOADER-DIGGER
    1.
    发明公开
    ENERGY RECOVERY AND REUSE SYSTEM FOR LOADER-DIGGER AND CONTROL METHOD THEREFOR, AND LOADER-DIGGER 审中-实审

    公开(公告)号：EP4403780A1

    公开(公告)日：2024-07-24

    申请号：EP22868447.8

    申请日：2022-11-25

    Applicant: Jiangsu XCMG Construction Machinery Research Institute Ltd.

    Inventor： JIN, Weiwei ,  GENG, Yanbo ,  LI, Mingshuai

    IPC: F15B1/02 ,  F15B11/16 ,  F15B13/06 ,  F15B21/14 ,  E02F9/22 ,  E02F3/36

    Abstract: The present disclosure relates to a backhoe loader energy recovery and reuse system and a control method thereof, and a backhoe loader, wherein the system comprises: an actuator, configured to drive a working device to perform an action with hydraulic oil as a medium, and having a first cavity and a second cavity; a reversing valve, having a first working oil port communicated with the first cavity and a second working oil port communicated with the second cavity, the reversing valve being configured to reverse the actuator; a stabilizing valve group, having a first oil port, a second oil port, a third oil port and a fourth oil port, the first oil port and the second oil port being communicated with the first cavity and the second cavity, respectively, and the third oil port being communicated with an oil tank; and an energy storage part, communicated with the fourth oil port and configured to store hydraulic energy; wherein the first oil port and the third oil port have a first communication state therebetween, in which the hydraulic oil in the first cavity can enter the oil tank; the second oil port and the fourth oil port can be selectively connected or disconnected, and in a connected state, the second cavity is communicated with the energy storage part.

    FLOW CONTROL DEVICE AND FLOW CONTROL METHOD FOR CONSTRUCTION MACHINE
    6.
    发明公开
    FLOW CONTROL DEVICE AND FLOW CONTROL METHOD FOR CONSTRUCTION MACHINE 有权
    流量控制装置和流控制方法用于建筑机械

    公开(公告)号：EP2947211A4

    公开(公告)日：2016-09-28

    申请号：EP13871736

    申请日：2013-01-18

    Applicant: VOLVO CONSTR EQUIP AB

    Inventor： JOUNG HEA-GYOON ,  KIM SUNG-GON

    IPC: E02F9/22 ,  F02D29/04 ,  F15B11/024 ,  F15B13/06

    CPC classification number: F15B11/024 ,  E02F9/2217 ,  E02F9/2225 ,  E02F9/2228 ,  E02F9/2282 ,  E02F9/2296 ,  F15B13/026 ,  F15B13/027 ,  F15B2211/20546 ,  F15B2211/3133 ,  F15B2211/505

    Abstract: Disclosed are a flow control device and a flow control method for a construction machine for preventing the loss of fluid exhausted from a hydraulic pump when a boom and an arm of an excavator are operated in combination. The flow control device for a construction machine according to the present invention includes: an engine; a variable capacity hydraulic pump connected to the engine; a first hydraulic cylinder and a second hydraulic cylinder connected to the hydraulic pump; a first control valve disposed in a center bypass channel of the hydraulic pump, the first control valve, in neutral, returning the fluid exhausted from the hydraulic pump to a hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the first hydraulic cylinder; a second control valve disposed downstream of the center bypass channel of the hydraulic pump, the second control valve, in neutral, returning the fluid exhausted from the hydraulic pump to the hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the second hydraulic cylinder; a regeneration fluid channel for supplementing and reusing fluid returned to the hydraulic tank during a compression stroke of the first hydraulic cylinder, and a regeneration valve disposed in the regeneration fluid channel; and a pressure-compensated flow control valve which is disposed in a meter-in fluid channel of a spool of the first control valve and limits the quantity of working fluid supplied from the hydraulic pump to the first hydraulic cylinder when the first hydraulic cylinder and the second hydraulic cylinder are operated in combination.

    PUMP CONTROL SYSTEM FOR CONSTRUCTION MACHINERY
    10.
    发明公开
    PUMP CONTROL SYSTEM FOR CONSTRUCTION MACHINERY 审中-公开
    泵控制系统建筑机械

    公开(公告)号：EP2518224A2

    公开(公告)日：2012-10-31

    申请号：EP10839785.2

    申请日：2010-12-23

    Applicant: Doosan Infracore Co., Ltd.

    Inventor： JANG, Dal Sik

    IPC: E02F9/22 ,  F15B11/05 ,  F15B13/06

    CPC classification number: E02F9/2217 ,  E02F9/2239 ,  E02F9/2282 ,  E02F9/2292 ,  E02F9/2296

    Abstract: Disclosed is a pump control operating system of a construction machine. The present invention is a construction machine, such as an excavator, which comprises a plurality of hydraulically driven actuators, in which some of the actuators are provided in a one-to-one pump system (A) where hydraulic pumps are connected to the respective actuators such that a working fluid is supplied from the respective pumps, and the remaining actuators are provided in an auxiliary control valve system (B) where the working fluid is distributed by an auxiliary control valve (120) connected to one or more pumps. When an amount of the working fluid of an actuator associated with the auxiliary control valve (120) is insufficient, the actuator associated with the auxiliary control valve (120) is connected to a pump of the one-to-one pump system (A) to share the pump of the one-to-one pump system (A). Accordingly, an insufficient amount of the working oil of the auxiliary control valve can be supplemented by a pump of the one-to-one pump system to achieve a smooth operation of the actuator operated by the auxiliary control valve.

Patent Agency Ranking