| 摘要 |
The lever (4) for driving is held in a drive position by a pressure block (6). This is forced out from the wall of the regulator (5) when the dead man handle (2) is held pressed downwards, so that it presses on the lever (4) end (9). When the dead man handle is dropped forwards the pressure block goes back to the regulator wall, whereby the driving lever is pushed to an 'off' position by a spring-tensioned connection (10). The driving lever can be pushed to the 'off' position even without the dad man handle being released, whereby it is necessary to overcome the tension from the dead man handle and the friction between the lever end (9) and the pressure block. |
