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Patent Searching and Data


Title:
HYDRAULIC CONTROLLER OF CONSTRUCTION EQUIPMENT
Document Type and Number:
Japanese Patent JP2003065301
Kind Code:
A
Abstract:

To enable change of the operational characteristics of a hydraulic actuator according to an operator's desire as to a hydraulic controller of a construction equipment.

A desired speed table 4 memorizing the desired action speed of a hydraulic actuator 30 for the manipulated variable of an operating member 2 operated by an operator, and a desired acceleration table 5 memorizing the desired action acceleration of the hydraulic actuator 30 for the manipulated variable of the operating member are provided, and either of the desired speed table 4 or the desired acceleration table 5 can be selected with the operation of a selecting switch 3 by the operator. The desired value is set corresponding to the manipulated variable of the operating member 2 using the table selected with the selecting switch 3, and a control valve 17 for controlling the pressure oil feeding amount from a hydraulic pump 16 into the hydraulic actuator 30 is controlled based on the desired value set by a controlling means.


Inventors:
YOSHINO KAZUNORI
Application Number:
JP2001255215A
Publication Date:
March 05, 2003
Filing Date:
August 24, 2001
Export Citation:
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Assignee:
CATERPILLAR MITSUBISHI LTD
International Classes:
E02F9/20; E02F9/22; F15B9/09; F15B11/04; F15B21/08; G05B11/36; G05B19/23; G05D16/20; (IPC1-7): F15B11/04; E02F9/22; G05B11/36
Attorney, Agent or Firm:
Yu Sanada