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    • 2. 发明专利
    • STEERING OPERATION DEVICE OF WORK VEHICLE
    • JPH08324290A
    • 1996-12-10
    • JP13493895
    • 1995-06-01
    • KUBOTA KK
    • MINAMI RYUICHIKIME OSAMU
    • B60K26/00B60K20/00
    • PURPOSE: To enhance operability by forming an outer peripheral surface in a range of separating a cam body from the other cam body by exceeding a prescribed range so as to continue with a change in an outer peripheral surface in the first axial direction of the cam body in a prescribed range. CONSTITUTION: When a first operation lever 8 and a speed change lever 9 are positioned in neutral, contact positions of cam-followers 15L and 15R to cam bodies 16L and 16R become a standard length in a distance from the first axis X1, and hydraulic pumps PL and PR of a static oil pressure type continuously variable transmission are also put in a neutral condition, and a crawler traveling device is stopped. When it is put in an advancing speed increasing condition by operating only the speed change lever 9 in this condition, both cam bodies 16L and 16R are rotated by the same quantity in the clockwise direction according to an operation quantity of the speed change lever 9. Therefore, the contact positions of the cam-followers 15L and 15R to the cam bodies 16L and 16R also become larger by the same quantity than a standard length in a distance from the first axis X1, and the left and right hydraulic pumps PL and PR are set at a swash plate angle by the same quantity to the normal rotation speed increasing side by that extent, and it rectilinearly travels forward.
    • 6. 发明专利
    • DUST-PROOF STRUCTURE FOR ENGINE OF SERVICE TRUCK
    • JPH07133721A
    • 1995-05-23
    • JP27917393
    • 1993-11-09
    • KUBOTA KK
    • KIME OSAMUMIZUMOTO MASAYANAKAYA SHOICHITANAKA YUJI
    • F01P11/12
    • PURPOSE:To remove dust stuck to a dust-proof net by centrifugal force and thereby prevent the dust-proof net from being clogged with accumulated dust, in the case of a service truck provided with the dust-proof net on the cooling air inlet port of an engine, by mounting the dust-proof net rotatably and causing it to make a rotational drive by a driving gear. CONSTITUTION:A service truck has a dust-proof net 10 for covering the cooling air inlet port of an engine 13 provided inside a case 9 positioned on the end part of the cropped side (right side) of a motor unit 8 while the downstream side of the dust-proof net 10 is provided in parallel with a fixed dust-proof net 11, a radiator 12 for cooling the engine 13 and an inlet fan 14. In this case, the dust-proof net 10 formed, for example, in a dish shape is supported by a rotation axis 15 attached to the case 9 and sealed on a partition wall 16 inside the case 9 with a ring seal material 17. The dust-proof net 10 is given a rotational drive by an electric motor 18 attached to the case 9 through a belt 19. Thus dust stuck on the dust-proof net 10 is removed by centrifugal force and clogging of the dust-proof net 10 due to accumulation of dust is thereby prevented.
    • 10. 发明专利
    • OPERATING STRUCTURE OF COMBINE
    • JPH1084753A
    • 1998-04-07
    • JP23937596
    • 1996-09-10
    • KUBOTA KK
    • KIME OSAMUMIZUMOTO MASAYA
    • A01D69/00A01D69/08A01D69/10
    • PROBLEM TO BE SOLVED: To make pedal stopping operation light at the time of executing the return of a gear shift lever and the disengaging operation of a traveling clutch by the stepping operation of a pedal for stopping traveling or at the time of executing the braking operation of the brake of a traveling system in addition in the operating structure of the combine constituted so as to independently driving right and left crawler traveling devices by respective drives of continuously variable transmission of a static hydraulic type and to operate variable transmission of both drives of the continuously variable transmission by means of the single gear shift lever. SOLUTION: Both of the continuously variably transmission devices to independently drive the right and left crawler traveling device are respectively constituted so as to be gear-shift-operated by the gear shift lever 31, and the pedal for stopping traveling 26 for forcedly moving he lever 31 to a neutral position by stepping operation is provided. Then the traveling clutch intermitting power transmission to a hydraulic pump in both of continuously variable transmission devices are constituted so as to be engage/disengage-operated by an actuator, and the actuator is constituted so as to operate disengaging the clutch based on the detection of the stepping operation of the pedal 26.