Title:
掘削機キャブ内の安全レバーシステム
Document Type and Number:
Japanese Patent JP4711764
Kind Code:
B2
Abstract:
The present invention relates to a safety lever system (30) in a cab of an excavator, which is capable of preventing an unintended descending of a control box (24) without the operation of the safety lever, and promoting a safer tilting of the control box through a limit means that controls the power application/short-circuit. According to the present invention, if the operator tilts the control box (24) to get in or get out of the cab, the safety lever system (30) shunts (i.e., short-circuit) the power of the control lever (22) or the control box. Therefore, the possibility of malfunction of the excavator due to the miss-operation of the operator is very slim, and the control box cannot be returned to its original position unless the operator operates the safety lever again. This structural improvement of the safety lever eliminates a possibility of the malfunction of the excavator due to the operator's mistake, and markedly increases the reliability of the excavator.
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Inventors:
Saint Au Jean
Haku Shin Kim
Haku Shin Kim
Application Number:
JP2005204465A
Publication Date:
June 29, 2011
Filing Date:
July 13, 2005
Export Citation:
Assignee:
Volvo Construction Equipment Arbor
International Classes:
E02F9/24; E02F9/20; G05G1/04
Domestic Patent References:
| JP2002146839A | ||||
| JP9013425A | ||||
| JP9041426A |
Attorney, Agent or Firm:
Kazuo Shigenobu
Hideo Shimizu
Yuichi Takagi
Yoshinao Nakano
Hideo Shimizu
Yuichi Takagi
Yoshinao Nakano