| 摘要 |
FIELD: mining.SUBSTANCE: device to measure speed and direction of soil motion relative to an underground pipeline comprises a metering telescopic two-link lever with a sensor of elongation, a hinged joint, a unit of movements count. A hinged joint and a metering telescopic two-link lever are placed into a protective flexible case, besides, the metering sliding two-link lever in the case is fixed with the help of spring centralisers, and also in the metering telescopic two-link lever there is a unit of unlocking of a cord of elongation of the metering telescopic two-link lever.EFFECT: provision of long-term fault-free operation of a device and convenience of its service without labour intensive earth works.1 dwg |
