VALVE OPERATING DEVICE AND PILOT VALVE COMPRISING THE SAME

Japanese Patent JP3655280

B2

PROBLEM TO BE SOLVED: To solve a problem in manufacturing pilot valves of various specifications and pressure characteristics corresponding to construction machines and operating machines, that the number of kinds of pilot valves is increased, which needs the cost for managing and manufacturing the same, and needs the complicated selecting/mounting work.
SOLUTION: An operation pedal adjusting a channel opening of a valve body by being tilted, and a tilt angle restricting part 11 for restricting a tilt angle of the operation pedal 7 and a tilting restricting part 16 are mounted. The tilt angle determining part 11 and the tilting restricting part 16 are switchable between a restraining state for restraining the tilting of the operation pedal 7, and a tilting state for restricting the tilting of the operation pedal 7 within a predetermined angular range, so that the pilot valve can cope with various specification and pressure characteristics.

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JP6537330	Wireless communication system, mine management server and wireless communication terminal device
WO/2009/086601	A REAL TIME METHOD FOR DETERMINING THE SPATIAL POSE OF ELECTRIC MINING SHOVELS

Yoshio Togashi
Kenji Kayamoto

JP2002353808A

June 02, 2005

December 05, 2002

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Kawasaki Precision Machinery Co., Ltd.
Japan Pneumatic Industries Co., Ltd.

E02F9/20; F16K31/62; (IPC1-7): F16K31/62; E02F9/20

JP2000129725A
JP2001312323A
JP6154065U
JP583820U
JP6230841A

Yoshihiro Tsunoda
Yasu Furukawa
Toshio Nishitani
Keiji width
Izumi Uchiyama

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