Street-asphalt or concrete cutting machine - uses sensor detecting position of street-mounted guide rails to control rear axle position for steering

摘要

The driving unit (2) and the chain driven cutting wheel (3) are mounted on the chassis (1). The hand wheel (5) adjusts cutting depth. To control direction, the rear axle for the running wheels (8) can move in a horizontal slot on one side, stops (11,12) providing limits to the lateral movement. The movement of this end of the axle is controlled by a piston in an oil filled cylinder, supplied with oil from a pump, valve and electronic control box. At the front of the chassis a sensor (20) detects the required curvature from the position of the guide rails (21), mounted on the street surface. This sends a signal to the control box, steering the rear axle in the required direction. ADVANTAGE - Simple inexpensive machine; allows gradual and smooth direction changes.