PRESSURE OIL SUPPLY/DISCHARGE DEVICE FOR HYDRAULIC SHAFT COUPLING

Japanese Patent JP2774236

B2

PURPOSE: To provide a pressure oil supply/discharge device for a hydraulic shaft coupling which suppress leakage of pressure oil to minimum when the pressure oil is supplied to the hydraulic shaft joint and sealed by a check valve mechanism, and opens the check valve mechanism in a contraflow direction with facility and certainly.
CONSTITUTION: Pressure oil supply/discharges devices 11, 12 are operated for supplying and discharging pressure oil to a hydraulic shaft coupling which is connected by sealing the supplied pressure oil and disconnected by discharging the sealed pressure oil. There are provided a valve body 35 formed a valve seat 37 having a primary port 38 to be connected to a pressure oil supply device 60, a poppet 41 holding a ball 40 pressed against the valve seat 37 and main bodies 30, 31, 32 holding the valve body 35 and housing the poppet 41 in a movable manner in the pressurizing direction, and commonly having a secondary port 49. A belleville spring 44 presses the poppet 41 against the valve seat 37. A shaft member 45 is connected to the poppet 41 and has a tapered portion 46 perpendicular to the pressing direction. A wedge member 54 is operated for pressing the tapered portion in an opposite direction to the pressing direction.

Masahisa Nakamura
Masaaki Inoue

JP26564293A

July 09, 1998

September 28, 1993

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SUMITOMO METAL INDUSTRIES,LTD.
Nabco Co., Ltd.

F16D1/10; B21B35/14; F16D1/06; F16D1/091; F16D25/04; (IPC1-7): F16D1/06; B21B35/14; F16D25/04

JP623814A
JP4881758A
JP5214221A
JP4947738A
JP61117922U

Kaji Yoshiyuki

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