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US 2003/0192309 A1Published application
Axle driving apparatus
OwnerNorihiro Ishiiinventor
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.
Claims27
An axle driving apparatus for a vehicle, comprising:
- a housing;
- an axle disposed in said housing;
- an input means disposed in said housing;
- a hydraulic pump driven by said input means, wherein said hydraulic pump is provided with a reciprocally movable cylinder block with a plurality of pistons disposed in said cylinder block, said cylinder block having a rotary axis which is substantially perpendicular to a rotary axis of said axle;
- a movable swash plate for receiving thrust from the heads of said pistons;
- means disposed on opposite sides of said movable swash plate in said housing for rotatably supporting said movable swash plate and for permitting said movable swash plate to slant along an axis substantially parallel to said axle;
- a hydraulic motor driven by pressurized oil from said hydraulic pump;
- an output means driven by said hydraulic motor;
- and
- a drive train for drivingly connecting said output means and said axles.
7 more elements
An axle driving apparatus for a vehicle comprising:
- a housing;
- a hydrostatic transmission disposed in said housing, including an input means, a hydraulic pump driven by said input means, a hydraulic motor driven by pressurized oil from said hydraulic pump, and an output means driven by said hydraulic motor;
- an axle;
- and
- a drive train for connecting in a driving manner said output means of said hydrostatic transmission with said axle;
- wherein said hydraulic pump is provided with a reciprocally movable cylinder block, containing therein a plurality of pistons and having a rotary axis substantially perpendicular to a rotary axis of said axles, a movable swash plate for receiving thrust from the heads of said pistons, and a means for slantingly rotatably supporting said movable swash plate in said housing;
- wherein said means for slantingly rotatably supporting said movable swash plate includes a first trunnion and a second trunnion provided at lateral sides of said movable swash plate and disposed on the same axis and in substantially parallel to said axle, two wall portions provided in said housing and disposed opposite to each other and extending longitudinally of said axle and a first bearing and a second bearing provided at said two wall portions for receiving said first and second trunnions, respectively.
4 more elements
An axle driving apparatus for a vehicle comprising:
- a housing;
- a hydrostatic transmission disposed in said housing including an input means, a hydraulic pump driven by said input means, a hydraulic motor driven by pressurized oil from said hydraulic pump, and an output means driven by said hydraulic motor;
- an axle;
- a drive train for connecting in a driving manner said output means of said hydrostatic transmission and said axle;
- an internal wall provided in said housing which separates the interior of said housing into a first chamber, containing therein said hydrostatic transmission and for storing operating oil for said hydrostatic transmission, and a second chamber, containing therein said drive train and for storing oil for lubricating said drive train;
- an oil bore open at said internal wall;
- and
- an oil filter for covering said oil bore,
- wherein said oil freely communicates between said first chamber and said second chamber through said oil filter.
6 more elements
An axle driving apparatus for a vehicle comprising:
- a housing;
- a hydrostatic transmission disposed in said housing, including an input means, a variable displacement type hydraulic pump of driven by said input means, a hydraulic motor driven by pressurized oil from said hydraulic pump, and an output means driven by said hydraulic motor;
- an axle;
- a drive train for drivingly connecting said output means of said hydrostatic transmission with said axle;
- a control shaft for changing the volume of said hydraulic pump, said control shaft extending substantially in parallel with respect to said axles and positioned at one side of said housing;
- an arm fixed to said control shaft, positioned on one side wall of said housing, and longitudinally swinging around said control shaft connecting with a speed change operating member provided on said vehicle;
- and
- a shock absorber for applying operational resistance to said speed change operating member, said shock absorber having a movable portion and a fixed portion, one of said movable portion and said fixed portion is mounted to said housing while the other is mounted to said arm.
5 more elements
An axle driving apparatus for a vehicle comprising:
- a housing;
- a hydrostatic transmission disposed in said housing, including a substantially perpendicular 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 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
Dependencies are inferred from the claim text.