| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Tractor | US43664321 | 1921-01-12 | US1520397A | 1924-12-23 | LEO BEST CLARENCE |
| 42 | Endless-track vehicle | US62637623 | 1923-03-20 | US1461028A | 1923-07-10 | DAVIS LEWIS K |
| 43 | 작업차용 크롤러 주행 장치의 크롤러 장력 조정 장치 | KR1020140106891 | 2014-08-18 | KR1020140116362A | 2014-10-02 | 야마나까유끼후미; 하야시시게끼; 가또오유우지; 오꾸야마다까시; 시모다요오헤이; 이께다마사루; 가또오가쯔히데; 야마가따고오지; 기따하시도시유끼; 요네다야스따까; 고따니신스께; 미야자끼마꼬또; 오모리미끼오 |
| Provided is a work vehicle with improved turning performance of a steering operation structure and operability of a steering operation, wherein the steering operation structure contains a first pivot mechanism and a second pivot mechanism which contributes to a difference in speed on the right and left sides of a running device. The difference in unit speed by the first pivot mechanism (the second pivot mechanism) for the unit operation amount of a steering operation pipe (77) is set to be small in an area of a straight-ahead position (N) side of the steering operation pipe (77); and is set to be large in the area of a steering limit side of the steering operation pipe (77). The variation characteristics of the difference in unit speed in a first state and the variation characteristics of the difference in unit speed in a second state are set to be different. | ||||||
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