Title:
BAKCHOE
Document Type and Number:
Japanese Patent JP3290735
Kind Code:
B2
Abstract:
PURPOSE: To restrain the power consumption of an electromagnetic valve, when a key is turned on during the rest of an engine, and prevent a battery from being exhausted, regarding a backhoe having the constitution where a restriction plane is set in the air at the preset distance from a drive section, hydraulic fluid is interrupted with the electromagnetic valve to automatically stop a backhoe device and prevent a bucket from coming in contact with the drive section when the bucket reaches the restriction plane.
CONSTITUTION: Power supply to electromagnetic valves 39 and 40 are interrupted during the rest of an engine 45, on the basis of a detection means 52 to detect whether the engine 45 is running or not. Also, power is supplied to the valves 39 and 40, when the engine 45 is running, and this operation is selected and set at a work position. When a bucket tries to enter a drive section over a restriction plane, power supply to the valves 39 and 40 is cut off, and changed over from the work position to an interruption position, thereby stopping a hydraulic cylinder to drive a backhoe device.
Inventors:
Yoshihiro Kato
Application Number:
JP4475093A
Publication Date:
June 10, 2002
Filing Date:
March 05, 1993
Export Citation:
Assignee:
Kubota Corporation
International Classes:
E02F3/43; E02F9/24; F15B20/00; (IPC1-7): E02F9/24; E02F3/43; F15B20/00
Domestic Patent References:
| JP3156037A | ||||
| JP544517A | ||||
| JP4333731A |
Attorney, Agent or Firm:
Shuichiro Kitamura
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