Title:
STRUCTURE FOR LIFTING AND LOWERING GROUND WORKING PART OF WORKING MACHINE
Document Type and Number:
Japanese Patent JPH0297308
Kind Code:
A
Abstract:
PURPOSE: To reduce overshoot and vibration of ground working part by decreasing changeover frequency in the working direction of servocylinder.
CONSTITUTION: Operation signal corresponding to the difference between detection height and set objective height by height sensor is sent to a stepping motor of servocylinder 6 and after operation of stepping motor is finished, operation signal based on the height detection is sent to the stepping motor. Thereby frequency for changing operation direction of servo cylinder is decreased and overshoot and vibration of ground working part 4 is reduced.
Inventors:
NAKAO YASUNARI
Application Number:
JP25056888A
Publication Date:
April 09, 1990
Filing Date:
October 04, 1988
Export Citation:
Assignee:
KUBOTA LTD
International Classes:
A01B63/10; A01B63/00; A01C11/02; (IPC1-7): A01B63/10; A01C11/02
Attorney, Agent or Firm:
Kitamura Osamu
Next Patent: JPH0297309