Title:
HEIGHT CONTROLLER FOR WORKING DEVICE AGAINST GROUND
Document Type and Number:
Japanese Patent JP3378455
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To appropriately deal with a working condition by providing an informing means informing that the receipt of a message becomes impossible, when a discriminating means discriminates that reference rays can not be received at a receiving part.
SOLUTION: A starting switch 24 is operated ON, so as to being elevatable movement control of a ground leveling blade by laser rays. Next laser beams transmitted from a laser lighthouse T are received by a level sensor S fitted to the blade, and transmitted to a controller 38. Next the controller 38 controls a solenoid valve V so that the laser beams are received at the incidence target position of the sensor S, and the blade is elevatably moved so as to level the ground. When the laser beams can not be received, the controller 38 elevates the blade up to the upper limit. Further when the laser beams can not be received even at detecting the blade reached to the upper limit by a lift arm sensor 13, the controller 38 actuates a warning lamp 27, a buzzer 28, and a display device D. Hereby, the work can be executed while appropriately dealing with the working condition.
Inventors:
Takao Nakagawa
Application Number:
JP1354997A
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
Domestic Patent References:
| JP8116718A | ||||
| JP5134996U |
Attorney, Agent or Firm:
Shuichiro Kitamura
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