Tractor |
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| 申请号 | JP12346078 | 申请日 | 1978-10-04 | 公开(公告)号 | JPS5551668A | 公开(公告)日 | 1980-04-15 |
| 申请人 | Kubota Ltd; | 发明人 | ITOU KATSUMI; KONDOU KENJI; NISHIGUCHI NOBUYUKI; | ||||
| 摘要 | PURPOSE:To enable steering over operation even the amount of handle operation is little and enable small turning by arranging a control mechanism for engaging an angular speed detecting mechanism and a relative speed varying mechansim. CONSTITUTION:The front and rear wheels on the left side are driven by a first and a second hydraulic motors M1 and M2, and the front and rear wheels on the right side are driven by a third and a fourth hydraulic motors M3 and M4 through feeding of pressurized oil by pump, and these four wheels are driven separately. A detector 7 for detecting the revolution operation state of a handle 5 is arranged, and the pulse from the detector 7 is input into a counter 8 and a converter 9, and further input into a handle operation angular speed detecting circuit. A control mechanism 19 is constituted that due to the linkage of the mechanism 11 for detecting the operation angular speed of the handle 5 and a relative speed varying mechanism 17, when the operating angular speed for handle becomes above a prescribed value, the driving speed of the wheels on the handling direction side becomes automatically smaller than that of the wheels on the opposite side. | ||||||
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