| 摘要 |
The body of the control is displaceable along a rail by the driving force from the first shaft, and the bearer is movable by driving force from the second shaft. The two shafts are fitted relatively close to each other, and each carry a gearwheel which sets them in rotation. A drive arrangement incorporates pref. two gearwheels which are alternately lockable in relation to a third drive shaft, so that at will the first or the second drive shaft can be made to rotate. The third drive shaft is set in rotation by a long manoeuvring unit, enabling an operator to operate the machine by remote control. The manoeuvring unit also causes the remote control device to carry out the change function. |
