| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of the need of pulling a self-propelled power spreader backwards by strong force, if the spreader is a conventional one, since there is resistance of a motor, etc., when a direction change is required owing to a bump of the spreader, etc., during its running in a narrow running route, and there is no space for the change, and the power spreader must be moved backwards. SOLUTION: When a control switch 6 is set to 'backwards', a motor rotates in the reverse direction, and driving force is transmitted to the inner ring 36a of a one way gear via a chain 39. Since the outer ring 36b of the one way clutch does not rotate, when the driving force is transmitted, the front wheel 9 does not rotate either. |
