DEVICE TO DETERMINE DISPLACEMENT OF ROCKS Russian patent published in 2012 - IPC E21C39/00 

FIELD: mining.

SUBSTANCE: device comprises a support body, a spacer unit arranged in it and comprising a body and hingedly joined metering and spacing levers tightened by a spring, and a measurement unit with a displacement sensor. The spacer unit body is fixed to the free end of the spacing lever in a hinged manner, and with the free end of the metering lever - hingedly and capable of limited displacement in its two longitudinal side slots. The support body is equipped with front and back sliding supports. At the same time the spacing unit is installed in the specified supports with the possibility of limited axial displacement between them.

EFFECT: increased efficiency of operation due to increased accuracy of measurement of mutual displacement of geoblocks by elimination of sliding of the hinged connection axis of the metering and spacing levers of the spacer unit, transmitting the value of mutual displacement of geoblocks to the displacement sensor, and improved reliability of operation due to facilitated conditions of device assembly and disassembly in the space between geoblocks.

3 cl, 4 dwg