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Title:
HYDRAULIC DRIVING DEVICE FOR CLUTCH IN INDUSTRIAL VEHICLE
Document Type and Number:
Japanese Patent JPH0367731
Kind Code:
A
Abstract:

PURPOSE: To obtain a quick engagement of a clutch by controlling the operating pressure of a clutch cylinder at the time of starting a vehicle by filling two accumulators with pressure to realize a shockless engagement of the clutch, and controlling the operating pressure by filling one accumulator with pressure.

CONSTITUTION: A back and forth shifting shift booster 5 and a speed changing shift booster 6 are connected in series with a booster circuit 4 connected to a hydraulic pump 1, and a clutch cylinder 21 is connected through an inching valve 7 to a clutch circuit 8 branched by a flow dividing valve 3. Further, an operating gate valve 15 capable of being switched to an open position by booster operating pressure, and back and forth moving- and speed changing gate valves 16, 17 for releasing the clutch pressure into a tank only at the time of neutral, are provided to a clutch pressure control circuit 13 branched from the clutch circuit 8. Then, a first accumulator 18 for controlling the increase in clutch pressure at the time of starting a vehicle and a second accumulator 19 for controlling the increase in clutch pressure at the time of starting and speed changing are provided.


Inventors:
TAKEUCHI TOSHIYUKI
OTA SHUJI
Application Number:
JP1989000204338
Publication Date:
March 22, 1991
Filing Date:
August 07, 1989
Export Citation:
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Assignee:
TOYODA AUTOMATIC LOOM WORKS
International Classes:
B60W10/02; B60W10/10; F16D48/02; F16D48/06; F16H61/02; F16H61/04; F16H61/06; F16H61/08; F16H61/10; F16H61/28; F16H63/46; (IPC1-7): B60K41/22; F16D25/11; F16H61/04; F16H61/28; F16H63/46



 
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