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US 6,604,359 B2Granted
Axle driving apparatus
AssigneeKanzaki Kokyukoki Mfg. Co., Ltd.
InventorsNorihiro Ishii, Ryoto Ohashi
Life of this patent
Estimating the term…
Abstract
An axle driving apparatus consisting of a housing for compactly housing inner portions of axles, a hydrostatic transmission, and a transmitting mechanism for transmitting power to the axles from an output shaft of the hydrostatic transmission. The housing is partitioned by an internal wall into a chamber containing the hydrostatic transmission and a chamber containing the other transmitting mechanisms. The housing is filled with oil in common with both chambers. A trunnion for changing the output rotation of the hydrostatic transmission is disposed in parallel to the axles. A shock absorber is provided to prevent abrupt speed change. A differential locking device is attached to the differential gear to thereby improve the straightforward running capacity of the vehicle.
Claims11
An axle driving apparatus for a vehicle comprising:
- a housing;
- a hydrostatic transmission disposed in said housing, including a substantially vertical input means, a hydraulic pump of variable displacement type driven by said input means, a hydraulic motor driven by pressurized oil from said hydraulic pump, and a horizontal output means driven by said hydraulic motor;
- a differential gear means including an input gear, a first output gear and a second output gear in said housing;
- a first axle and a second axle driven by said first output gear and said second output gear, respectively;
- and
- a drive train for drivingly connecting said output means of said hydrostatic transmission and said input gear of said differential gear means;
- wherein said differential gear means is provided with a clutch means for freely connecting said input gear to said first axle.
4 more elements
An axle driving apparatus comprising:
- a housing;
- a hydraulic pump disposed in said housing, said hydraulic pump including an input shaft;
- a hydraulic motor disposed in said housing and fluidly connected with said hydraulic pump, said hydraulic motor including an output shaft;
- a pair of axles disposed in and supported by said housing, said pair of axles extending respectively outwardly from said housing;
- a differential input gear disposed coaxially with said axles so as to be drivingly connected with said output shaft;
- a plurality of bevel gears interposed between said input gear and said pair of axles so as to differentially transmit power from said differential input gear to said pair of axles;
- and
- a differential-restrictive mechanism which brings a certain bevel gear of said plurality of bevel gears into engagement with said differential input gear so as to restrict the differential rotation of said axles.
5 more elements
An axle driving apparatus comprising:
- a housing;
- a hydraulic pump disposed in said housing, said hydraulic pump including an input shaft;
- a hydraulic motor disposed in said housing and fluidly connected with said hydraulic pump, said hydraulic motor including an output shaft;
- a pair of axles disposed in and supported by said housing, said pair of axles extending respectively outwardly from said housing;
- a differential input gear disposed coaxially with said axles so as to be drivingly connected with said output shaft;
- a plurality of bevel gears interposed between said differential input gear and said pair of axles so as to differentially transmit power from said differential input gear to said pair of axles, wherein said plurality of bevel gears include a pair of differential output gears fixed on said respective axles;
- and
- a differential-restrictive mechanism which brings one of said differential output gears into engagement with said differential input gear so as to restrict the differential rotation of said axles, wherein said differential-restrictive mechanism includes a clutch slider disposed axially slidably along one of said axles, on which said one differential output gear is fixed, for clutching on and off between said differential input gear and one of said differential output gears.
5 more elements
An axle driving apparatus comprising:
- a housing;
- a hydraulic pump disposed in said housing, said hydraulic pump including an input shaft;
- a hydraulic motor disposed in said housing and fluidly connected with said hydraulic pump, said hydraulic motor including an output shaft;
- a pair of axles disposed in and supported by said housing, said pair of axles extending respectively outwardly from said housing
- a differential input gear disposed coaxially with said axles so as to be drivingly connected with said output shaft;
- a plurality of bevel gears interposed between said input gear and said pair of axles so as to differentially transmit power from said input gear to said pair of axles, wherein said plurality of bevel gears include a certain bevel gear fixed on one of said axles;
- a differential-restrictive mechanism which brings said certain bevel gear into engagement with said differential input gear so as to restrict the differential rotation of said axles, wherein said differential-restrictive mechanism includes a clutch slider disposed axially slidably along one of said axles, on which said certain bevel gear is fixed, for clutching on and off between said differential input gear and said one of differential output gears;
- a fork member engaging with said clutch slider;
- an operation shaft on which said fork member is mounted, wherein said operation shaft is supported by said housing so as to be disposed in parallel to the axes of said axles, and projects at one end thereof outward from said housing;
- and
- an arm operatively connected to said one end of said operation shaft outside said housing, wherein said arm is operated so as to apply a thrust onto said fork member.
8 more elements
Dependencies are inferred from the claim text.