| 摘要 |
<p>A drive (39) rotates and feeds the mainshaft (3) and a control (7), rotating with the shaft, is fitted with a gate (6) to feed the shaft and a control path (28) for shaft rotation. The drive may comprise an hydraulic piston and cylinder unit whose rack (51) meshes with the pinion (53) co-rotatably fixed to the control. The element axis (8) can run parallel to the shaft and the gate may be designed as indentations in or round the control. Path sectors round the control and dissimilarly spaced from the control axis correspond to particular gears, using drive element (4) on the shaft engaging the gear gate with the guide (5). A feeler (12) projecting transversely on the drive part (11) co-rotatably secured to the shaft bears on the control path off a load-spring, using a sleeve drive part.</p> |
