| 摘要 |
PURPOSE:To enhance the responsiveness of a sensor by reducing the weight to be applied on a finishing stake at the end of the sensor to a very small value. CONSTITUTION:A case 1 is arranged at a specified position of a blade of a bulldoser and the like. The finishing stake 9 is inserted between a roller 17 of a running part 10 and rollers 19 and 20, and also engaged with a groove 17a of said roller 17. Said rollers 17, 19, and 20 compress the finishing stake 9 by the forces of springs 21 and 22. The position of a counter weight 8 is adjusted, and the weight applied on an arm end 5a, i.e., the weight applied on the finishing stake 9 by the running part 10, is reduced do a very small value. When the vehicle moves in the direction of an arrow A, the running part 10 smoothly moves on the finishing stake 9. The weight of the running part 10 applied on the finishing stake 9 is very small at this time. Therefore, the finishing stake 9 is not bent. |
