Axle driving apparatus
AssigneeKanzaki Kokyukoki Mfg. Co., Ltd.
InventorNorihiro Ishii
Life of this patent
Estimating the term…
Abstract
An axle driving apparatus, which contains two separately driven hydrostatic transmissions (HSTs) in a single housing, is made compact to improve the running operational efficiency of a working machine. In particular, power from a prime mover is transmitted to an input pulley so that the power is speed-changed by the two HSTs to drive left and right axles through left and right power transmitting means. The HSTs, power transmitting means and the axles are disposed substantially symmetrically laterally in the housing. The housing comprises parts coupled with each other such that joints between the parts are disposed in horizontal planes substantially parallel to the axes of rotation of the axles.
Claims22
An axle driving apparatus, comprising:
- a housing including at least two housing parts coupled with each other through a substantially horizontal plane;
- first and second axles laterally disposed in said housing, either in said horizontal plane or in parallel to said horizontal plane;
- a first hydrostatic transmission including a first output shaft disposed within said housing;
- a second hydrostatic transmission including a second output shaft disposed within said housing;
- a power input means having a substantially vertical axis of rotation, said power input means supplying power from a prime mover to said first and second hydrostatic transmissions;
- a first power transmitting means disposed in said housing for transmitting power from said first output shaft and to said first axle;
- and
- a second power transmitting means disposed in said housing for transmitting power from said second output shaft to said second axle.
An axle driving apparatus, comprising:
- a housing;
- first and second axles laterally disposed in said housing;
- a first hydrostatic transmission disposed in said housing and including a first hydraulic pump having a first pump shaft and a first hydraulic motor having a first motor shaft;
- a second hydrostatic transmission disposed in said housing and including a second hydraulic pump having a second pump shaft and a second hydraulic motor having a second motor shaft;
- a power input shaft supported by said housing having a substantially vertical axis of rotation for drivingly coupling with and in common to each of said first and second pump shafts;
- a first power transmitting means disposed in said housing for transmitting power from said first motor shaft to said first axle;
- and
- a second power transmitting means disposed in said housing for transmitting power from said second motor shaft to said second axle.
An axle driving apparatus, comprising:
- a housing;
- first and second axles laterally disposed in said housing;
- a first hydrostatic transmission disposed in said housing and including a first hydraulic pump having a first pump shaft and a first hydraulic motor having a first motor shaft;
- a second hydrostatic transmission disposed in said housing and including a second hydraulic pump having a second pump shaft and a second hydraulic motor having a second motor shaft;
- a power input means having a substantially vertical axis of rotation, said power input means including an input pulley disposed outside said housing for simultaneously driving each of said first and second pump shafts;
- a first power transmitting means disposed in said housing for transmitting power from said first motor shaft to said first axle;
- and
- a second power transmitting means disposed in said housing for transmitting power from said second motor shaft to said second axle.
Dependencies are inferred from the claim text.