| 摘要 |
In an exemplary embodiment, a brake disc is fixed to a motor shaft and a movable counter disc is withdrawn from the brake disc by an electromagnet against the force of a spring device. The spring device is laid out unsymmetrically in such manner that, in a first phase of the withdrawal, the counter disc is more strongly withdrawn from the brake disc in the area of lower spring forces. The braking system is employed as a parking brake supplementing the standard short circuit braking for transport cars traveling on profile rails and employed for transporting files.
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