| 摘要 |
PURPOSE:To prevent any damage to a plow body by pivotally mounting one end of a lower link member pivotally mounted at its other end below the plow body to a rotary bracket connected to a fitting member and fitting a shear pin between the bracket and a fitting member. CONSTITUTION:During snow removal operation, if the cutting edge 8 of a plow body collides with an obstacle 16, its shock is transmitted from the cutting edge 8 via a blade 7, a holding bracket 9 and a lower link member 11 to a rotary bracket 4. Next, a shear pin 13 is broken due to shocking force, the bracket 4 starts its turning motion in the direction of an arrow E and the bracket 4 is put in its turning motion until its rear end lower part collides with stopper 14 of a fitting member 1. Accompanying the turning movement of the bracket 4, the cutting edge 8 also makes turning motion in the direction of an arrow F so that the edge 8 rides over the obstacle 16 to prevent any damage to the body 6 and a vehicle body 2. |
