JP2022026001A5 - - Google Patents

Claims (9)

a mounting part that can be connected to the traveling body;
a working unit that receives power from the traveling body and performs farm work;
an offset mechanism portion disposed between the mounting portion and the working portion and configured to move the working portion in the left-right direction;
The offset mechanism section includes a first link member rotatably connected to the mounting section, and a first link member rotatably connected to the mounting section, and is spaced apart from the first link member. and a second link member ;
The offset work machine, wherein the second link member includes an expansion and contraction mechanism that expands and contracts according to a load applied to the working portion from the front side. 2. The offset work machine according to claim 1, wherein said telescopic mechanism has at least two members that slide relative to each other on an axis along the longitudinal direction of said second link member . The second link member includes a tubular member, a rod-shaped member inserted movably relative to the tubular member, and an overlapping portion of the tubular member and the rod-shaped member that expands and contracts according to changes. 3. The offset working machine according to claim 1, comprising an elastic member. The second link member is arranged on the side opposite to the direction in which the working portion moves offset with respect to the first link member,
4. The offset work machine according to claim 3, wherein said elastic member is compressed as the overlapping portion increases. 5. The offset work machine according to claim 4, wherein said elastic member is a compression coil spring. The cylindrical member has an elongated hole in the longitudinal direction,
The second link member further includes a pin member inserted through the elongated hole and movable integrally with the rod-shaped member,
The offset work machine according to any one of claims 3 to 5, wherein movement of said rod-shaped member with respect to said cylindrical member is restricted by contact of said pin member with an edge of said elongated hole. The elastic member is a compression coil spring,
7. The offset working machine according to claim 6, wherein said pin member abuts against the edge of said elongated hole before said compression coil spring reaches a compression limit. The offset work machine according to any one of claims 1 to 7, wherein the second link member further includes a sensor that detects the amount of expansion and contraction of the expansion and contraction mechanism. further comprising a power transmission unit that transmits the power from the mounting unit to the working unit;
The offset work machine according to any one of claims 1 to 8, wherein the power transmission section includes a roller chain wound between a pair of sprockets.