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Hydraulic controller for working machine

一种液压控制器、工作机的技术，应用在机械设备、移土机/挖土机、流体压力致动装置等方向，能够解决增加设备复杂性和造价等问题，达到降低复杂性和造价的效果

Active Publication Date: 2007-03-07
KOBELCO CONSTR MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the more the number of hydraulic equipment, the more the number of control pressure input switching valves supporting the equipment, which inevitably increases the complexity and cost of the equipment

Method used

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  • Hydraulic controller for working machine
  • Hydraulic controller for working machine
  • Hydraulic controller for working machine

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0024] A preferred embodiment of the present invention will be described with reference to the accompanying drawings. It is to be noted that although this embodiment is obtained by applying the present invention to the hydraulic excavator 10 shown in FIG. in the working machine.

[0025] The hydraulic excavator 10 includes a lower trolley body 12 and an upper swivel body 14 rotatably mounted to the lower trolley body.

[0026] The lower traveling body 12 includes left and right traveling crawlers 16L and 16R respectively including traveling motors 18L and 18R as hydraulic motors for rotating iron wheels of the crawlers.

[0027] In this hydraulic excavator 10, a liftable boom 20 is provided on an upper swivel body 14 as a working attachment. An arm 22 is rotatably connected to the front end of the boom 20 . In addition, a bucket 24 is rotatably connected to the front end of the arm 22 . Here, the lifting and lowering of the boom 20, the rotation of the arm 22 relative to t...

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PUM

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Abstract

The present invention provides a hydraulic controller for a working machine, wherein a control hydraulic source is commonly connected to a plurality of hydraulic control devices respectively having a control pressure input unit, and a common control pressure input switching valve is suitable for Switching between input of control pressure from the control hydraulic pressure source to each control pressure input unit and removal of the input is controlled. According to the operating state of the working machine and the control pressure input conditions of the corresponding hydraulic control hydraulic equipment, the control pressure input through the control pressure input switching valve is switched and controlled.

Description

technical field [0001] The present invention relates to a device for controlling the operation of a plurality of pilot hydraulic devices provided in a working machine. Background technique [0002] As an apparatus for remotely controlling a hydraulic control hydraulic device in a working machine, there is known an arrangement in which there is a control pressure input consisting of an electromagnetic switching valve or the like between the control pressure input unit of the hydraulic device and the control hydraulic pressure source A switch valve, and supply of a control pressure input signal to the control pressure input unit is switched by opening and closing the switch valve. [0003] For example, Japanese Patent Laid-Open No. 2002-5106 discloses a hydraulic circuit in which there is a solenoid valve (solenoid switch valve) between a control pressure input unit (swash plate) of a variable capacity hydraulic motor and a control hydraulic pump. [0004] Japanese Patent Lai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/028E02F9/22
CPCE02F9/2239F15B2211/41518F15B2211/781F15B2211/6658F15B2211/6346F15B2211/6054F15B2211/763F15B2211/633F15B2211/50518F15B2211/7135F15B2211/7058F15B2211/528F15B2211/67F15B2211/6316F15B2211/6309F15B2211/329F15B11/166F15B2211/71F15B2211/355F15B2211/5753F15B2211/665F15B2211/6355
Inventor 田路浩山崎洋一郎山下耕治冈秀和上田浩司
Owner KOBELCO CONSTR MASCH CO LTD