| 摘要 |
PURPOSE:To ensure safe working by using a working vehicle in which an alarm buzzer to actuate automatically as measured distance by a supersonic wave sensor exceeds a set value and a running drive stopper as safety devices for preventing the falling the vehicle are provided. CONSTITUTION:A supersonic wave sensor 9 to measure the distance between the ground surface A positioned behind a runner 1 and a turning base 5 is provided to the turning base 5 at the rear of a vehicle. An alarm buzzer to automatically actuate as measured distance by the supersonic wave sensor 9 exceeds a set value and a safety device for preventing the falling of the vehicle, such as a running drive stopper 11, etc., are provided. Since the approach of the vehicle to falling places can be easily recognized by the operator, or the vehicle can be stopped before the falling places, the vehicle can be safely operated even in the vicinity of cliffs or trenches. |
