| 摘要 |
<p>The collector has a pantograph head with a contact strip and a strap arrangement (4), where the head is changeable in width. A strap (5) has a horns (6, 7) at ends, and the horns are movable by an adjusting device (9) e.g. screw drive, in opposite directions and are movable transverse to driving direction. The adjusting device is integrated in the strap and has a double side operating piston-cylinder unit (10, 11), which is formed as a differential piston, an electromechanical drive unit, a threaded spindle, and a spindle nut.</p> |
