| 摘要 |
PURPOSE:To realize adjustment of the wheel height effective to a work on a slant land by rotatably installing on a work machine body, a pair of left and right power transmission cases equipped with wheels at its rear end, by means of a shaft in such a manner as left and right wheels make a vertical motion alternately by means of handle operation. CONSTITUTION:In working on a slant land, when a turning handle 26 is turned in normal direction, a piece 28 of vertical motion moves upward and, through each connecting rod 29 and 30, puts a rotary shaft 16 in normal rotation and a double axial cylinder 19 in reverse rotation. Accordingly, a right-hand power transmission case 9 moves upward and a left-hand power transmission case 8 moves downward. Reverse turn of a turning handle 26 produces a result contrary to the above. Where a boss 21 is removed and a crank arm 20 is projected out to the same side as that of a crank arm 32, both left and right wheels 10, 11 move upward when a turning handle 26 is turned in normal direction, while they both move downward when said handle is turned reversely. |
