Title:
TRANSMISSION CONSTRUCTION FOR TRAVELING OF AGRICULTURAL TRACTOR
Document Type and Number:
Japanese Patent JPS6288621
Kind Code:
A
Abstract:
PURPOSE:To simplify the transmission construction by forming a standard driving system with a man-power type claw clutch and forming the operating valve mechanism of a hydraulic friction clutch with the shift member of said claw clutch, in an agricultural tractor with a clutch type front wheel transmission. CONSTITUTION:In an accelerating drive condition, the claw 18a of a shift member 18 is apart from the engaging part 13a of a first receiving gear 13 disengaging a claw clutch 19, while a friction clutch 17 is engaged. In this condition, the shift member 18 is moved to the first receiving gear 13 side. Thereby, a pressure oil feeding passage is cut off by the inner surface of the shift member 18, and pressure oil in the friction clutch 17 is discharged through an oil passage 15a and an oil passage 18c of the shift member 18. accordingly, a piston 17b is moved back by means of a spring 17c, the friction clutch 17 is disengaged and, then, the claw 18a is engaged with the receiving gear 13 to engage the clutch 19, shifting to a standard drive condition. Thereby, a traveling driving mechanism can be simplified.
Inventors:
TOSHIKUNI NOBUYUKI
Application Number:
JP22752685A
Publication Date:
April 23, 1987
Filing Date:
October 12, 1985
Export Citation:
Assignee:
KUBOTA LTD
International Classes:
B60K17/348; B60K17/344; (IPC1-7): B60K17/344
Attorney, Agent or Firm:
Kitamura Osamu
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