| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a walking type tending machine capable of facilitating the manual pushing and pulling of a machine body even in an engine-stopped state. <P>SOLUTION: The walking type tending machine includes a closed hydraulic circuit connecting, through oil passages 75, 76, a hydraulic pump 16p driven by an engine 14 in HST 16 and a hydraulic motor 16m interlocking with an axle 4, and is constituted to implement an increase/decrease change of an oil amount of pressure oil in the closed hydraulic circuit, and the rotational speed change and rotational direction switching of the hydraulic motor 16m by the forward/reverse switching of a circulation direction. The tending machine further includes a bypass oil passage 80 for the hydraulic motor 16m in the closed hydraulic circuit and an oil switching means X of switching the bypass valve 79 located at a shutdown position for shutting down the bypass oil passage 80 to a communication position for setting the bypass oil passage 80 at a communication state, so that the oil switching means X is interlinked by operation in a direction different from the shift operating direction of a shift lever 39 to turn the bypass oil passage 80 of the closed hydraulic circuit into a communication state. <P>COPYRIGHT: (C)2012,JPO&INPIT |
