Security system for drive technology construction elements

摘要

A safety system for drive-engineering design elements, in particular brakes (20) and releasable couplings, with a hydraulically driven piston (21) which is slidably mounted in a cylinder (22), wherein the piston (21) and the cylinder (22) each have a first sliding surface (25) and a second, by a shaft shoulder (35, 36) of the first sliding surface (25) spaced sliding surface (26), wherein a working space (24) axially between the shaft shoulder (35) of the piston (21) and Shaft shoulder (36) of the cylinder (22), wherein the working space (24) to one side in the region of the first sliding surfaces (25) with a first sealing system (27) and the other side in the region of the second sliding surfaces (26) with a second Sealing system (28) is sealed, wherein at least one of the sealing systems comprises both a primary sealing element and a secondary sealing element.