Title:
WORK VEHICLE
Document Type and Number:
WIPO Patent Application WO/2016/189917
Kind Code:
A1
Abstract:
The present invention ensures a reduction in weight and costs while achieving high efficiency in a transmission path and improving operability in a work vehicle such as a tractor. A work vehicle is provided with: an engine 5 that is mounted to a traveling machine body 2; a straight advance transmission path comprising a first continuously variable transmission 17; and a turning transmission path comprising a second continuously variable transmission 13. The output of the straight advance transmission path and the output of the turning transmission path are combined and used to drive left/right travel sections 3. The work vehicle is additionally provided with: control units 813, 814 that control the output of the straight advance transmission path and the output of the turning transmission path in a linked manner; a speed change operation tool 822 that specifies the output of the straight advance transmission path; and a detector 823 that detects the output of the straight advance transmission path. The control units 813, 814 alternatively select between a command value from the speed change operation tool 822 and an actual measured value from the detector 823 and set the output of the turning transmission path.
Inventors:
FUJIKI KATSUMI (JP)
IWAMURA KEISUKE (JP)
IWAMURA KEISUKE (JP)
Application Number:
PCT/JP2016/056772
Publication Date:
December 01, 2016
Filing Date:
March 04, 2016
Export Citation:
Assignee:
YANMAR CO LTD (JP)
International Classes:
B62D11/08; B62D11/10
Foreign References:
| JPH1178957A | 1999-03-23 | |||
| JP2001163241A | 2001-06-19 | |||
| JP2011160767A | 2011-08-25 | |||
| JP2006096134A | 2006-04-13 |
Other References:
See also references of EP 3305626A4
Attorney, Agent or Firm:
WATANABE RYUICHI (JP)
Ryuichi Watanabe (JP)
Ryuichi Watanabe (JP)
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