Title:
TRACTOR VARIABLE SPEED TRANSMISSION DEVICE AND TRACTOR
Document Type and Number:
WIPO Patent Application WO/2019/102999
Kind Code:
A1
Abstract:
Provided is a variable speed transmission device for a tractor, the device having a narrow vertical width or horizontal width, and having a short longitudinal length. A variable speed output unit 23 is present further to a rearward side of a vehicle body than a compound planetary transmission unit 22. A planetary unit output axis center 22Y and a variable speed unit input axis center 23X have the same axis center. A motive power transmission unit 24 from an engine 6 to a continuously variable transmission unit 21 and the compound planetary transmission unit 22 is provided with a rotation transmission shaft 80 connected in a coordinated manner to an output shaft 6a of the engine 6 and extending along the longitudinal direction of the vehicle body, a pump transmission unit 85 that inputs motive power from the rotation transmission shaft 80 into the continuously variable transmission unit 21, and a planetary transmission unit 81 that inputs motive power from the rotation transmission shaft 80 into the compound planetary transmission unit 22. The rotation transmission shaft 80 is located further to the rearward side of the vehicle body than the engine 6, and is parallel with respect to a motor shaft 50a and a pump shaft 51a. The continuously variable transmission unit 21 and both the compound planetary transmission unit 22 and the variable speed output unit 23 are present in the same place in the longitudinal direction of the vehicle body.
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Inventors:
TSUCHIDA TOMONARI (JP)
HANA HIDETOSHI (JP)
IWASE RYOMA (JP)
HANA HIDETOSHI (JP)
IWASE RYOMA (JP)
Application Number:
PCT/JP2018/042850
Publication Date:
May 31, 2019
Filing Date:
November 20, 2018
Export Citation:
Assignee:
KUBOTA KK (JP)
International Classes:
F16H47/04
Foreign References:
| US20140206502A1 | 2014-07-24 | |||
| JP2012062926A | 2012-03-29 | |||
| JPS491382B1 | 1974-01-12 |
Other References:
See also references of EP 3715673A4
Attorney, Agent or Firm:
R&C IP LAW FIRM (JP)
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