WAY TO CONDUCT TESTS OF LOCKING-SEALING DEVICES Russian patent published in 2004 - IPC

FIELD: testing equipment. SUBSTANCE: invention is related to tests of locking-sealing devices including length of cable which end with locking is passed through body and is fixed by means of locking mechanism with spring-loaded fixing members. Given approach provides for single-axis tension of length of cable with constant speed of grippers of tearing machine. Ideal characteristic diagram for locking-sealing device-straight line is constructed in advance with setting of maximal load P_max - to which locking-sealing device should stand up in case of unauthorized penetration and value δ which is total crawling out of cable of locking mechanism in case of attempt of criminal break. In process of testing stepped increase of load P to consistently growing level P_i is carried out. Complete unloading of locking-sealing device is performed after each loading step and locking mechanism is displaced along cable to new seat. Obtained data are utilized to construct diagram P-δ of tension for locking-sealing device. EFFECT: obtainment of objective data on characteristics of locking-sealing device. 9 cl, 16 dwg