| 摘要 |
The invention relates to a climbing aid for ladders or the like, comprising an endless traction means running between guide pulleys, from which a person may optionally hang by means of a suspension device, with a drive device (20) comprising a drive motor (21), by means of which one of the guide pulleys may be driven as the drive disc (12) for the drive means (13), with a traction force limitation device and with a device for switching the drive device on/off, which can be actuated by the endless traction means (13). According to the invention, the traction force limitation device consists of a slip clutch (30) with torque limitation interposed between the drive disc (12) and the drive motor (21), and the device for switching the drive device on/off comprises sensor means (70) with which a movement of the traction means (13) can be detected, whereby the sensor means (70) are formed in such a manner that a detection of a sensor pulse switches the drive motor (21) on and an absence of sensor pulses within a time span switches the drive motor (21) off. |
