| 摘要 |
The push rod 24 is driven by an electric motor 2 by a spindle 9 having a spindle nut 23. The push rod 24 with the spindle 9 and with the drive motor are displaceable in the direction of the push-rod movement and are resiliently mounted by means of a ball bearing 12, 19 arranged between two cup-spring assemblies 17, 18. The drive motor 2 is switched off either by actuating limit switches 28, 29 as a result of the displacement of the drive motor 2 out of its position of rest determined by the cup-spring assemblies 17, 18 or by a load cut-off controlled electronically by the load current. <IMAGE> |
