Title:
トラクタの変速伝動装置及びトラクタ
Document Type and Number:
Japanese Patent JP7034051
Kind Code:
B2
Abstract:
Provided is a shift power transmission apparatus of a tractor that has a small up-down width or a small transverse width and a short front-rear length. A shift output unit (23) is located further toward a vehicle rear side than a combined planetary power transmission unit (22) is. A planetary unit output axis (22Y) and a shift unit input axis (23X) are coaxial with each other. A power transmission unit (24), that transmits motive power from an engine (6) to a continuously variable transmission unit (21) and the combined planetary power transmission unit (22), includes a rotary power transmission shaft (80), a pump transmission unit (85) and a planetary transmission unit (81), the rotary power transmission shaft (80) being interlockingly joined to an output shaft (6a) of the engine (6) and extending in a direction along a vehicle front-rear direction, the pump transmission unit (85) being configured to input motive power of the rotary power transmission shaft (80) to the continuously variable transmission unit (21), and the planetary transmission unit (81) being configured to input motive power of the rotary power transmission shaft (80) to the combined planetary power transmission unit (22). The rotary power transmission shaft (80) is located further toward the vehicle rear side than the engine (6) is and parallel to a motor shaft (50a) and a pump shaft (51a). The continuously variable transmission unit (21) is located at the same position as both the combined planetary power transmission unit (22) and the shift output unit (23) in the vehicle front-rear direction.
Inventors:
Tomoya Tsuchida
Hidetoshi Hana
Ryoma Iwase
Hidetoshi Hana
Ryoma Iwase
Application Number:
JP2018205692A
Publication Date:
March 11, 2022
Filing Date:
October 31, 2018
Export Citation:
Assignee:
Kubota Corporation
International Classes:
F16H47/04; B60K17/06
Foreign References:
| US20140206502 |
Attorney, Agent or Firm:
Patent business corporation r&c