SIGNAL+DRAHT | Issue 12/2019
Pawl locks for reliable switch operating systems
Rail-based transport has witnessed a significant increase in travelling speed and more intensive track usage in recent years. The requirements of railway operators in terms of the reliability and availability of the switch operating systems have, therefore, changed completely. While it was once sufficient for a switch operating system to simply throw the switch safely and hold it in the end position, considerably more is now expected of a modern system these days. The switch operating systems of today must meet strict reliability and availability requirements in addition to the basic functions, while also satisfying the desired economic criteria....