Title:
DEVICE FOR CONTROLLING HYDRAULIC PRESSURE OF CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2003/019017
Kind Code:
A1
Abstract:
A hydraulic pressure control device of a construction machine comprising a target velocity table (4) storing the target operational velocity of a hydraulic actuator (30) with respect to the manipulated variable of an operation member (2) operated by an operator and a target acceleration table (5) storing the target operational acceleration of the hydraulic actuator (30) with respect to the manipulated variable of the operation member (2), wherein either the target velocity table (4) or the target acceleration table (5) can be selected by the operation of a selection switch (3) by the operator. The operational characteristic of the hydraulic actuator (30) can be changed by setting the target value corresponding to the manipulated variable of the operation member (2) by a control means using the table selected by the selection switch (3), and controlling a control valve (17) for controlling the feed of pressure oil to the hydraulic actuator (30) from a hydraulic pump (16) based on the set target value.
Inventors:
YOSHINO KAZUNORI (JP)
Application Number:
PCT/JP2002/006230
Publication Date:
March 06, 2003
Filing Date:
June 21, 2002
Export Citation:
Assignee:
CATERPILLAR MITSUBISHI LTD (JP)
YOSHINO KAZUNORI (JP)
YOSHINO KAZUNORI (JP)
International Classes:
E02F9/20; E02F9/22; F15B9/09; F15B11/04; F15B21/08; G05B11/36; G05B19/23; G05D16/20; (IPC1-7): F15B11/04
Foreign References:
| JPH11199178A | 1999-07-27 | |||
| JPS62297502A | 1987-12-24 | |||
| JPS6034501A | 1985-02-22 |
Other References:
See also references of EP 1420170A4
Attorney, Agent or Firm:
Sanada, Tamotsu (10-31 Kichijoji-honcho 1-chome Musashino-shi, Tokyo, JP)
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