Title:
HEIGHT CONTROL DEVICE OF GROUND WORKING DEVICE
Document Type and Number:
Japanese Patent JP3378454
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To control according to the swing frequency of laser beam in controlling the lifting based on the laser beam.
SOLUTION: A height control device of a ground working device is provided with a storing means M which holds that laser beam was injected to a level sensor S for a specified time, and discriminates the incidence frequency of the laser beam by a discrimination means E based on the stored conditions of the storing means M when the laser beam was injected. Also it is provided with a control mode setting means F which, based on the discrimination results, reduce the operating speed of a shift cylinder 10 more as the frequency of incidence is increased.
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Inventors:
Takao Nakagawa
Application Number:
JP1354897A
Publication Date:
February 17, 2003
Filing Date:
January 28, 1997
Export Citation:
Assignee:
Kubota Corporation
International Classes:
E02F3/43; E02F3/85; E02F9/26; (IPC1-7): E02F3/85; E02F9/26
Domestic Patent References:
| JP6173292A |
Attorney, Agent or Firm:
Shuichiro Kitamura