REMOTE CONTROL DEVICE OF DEFORMATIONS OF ROOF ROCKS Russian patent published in 2011 - IPC E21C39/00 

FIELD: mining.

SUBSTANCE: remote control device of deformations of roof rocks includes central bar with spacer flexible elements, deformation transfer element and converter of linear displacements with indicating unit of recording device, which is connected to it. At that, device is equipped with sensor with additional spacer flexible elements which are made of steel hardened plates for reliable attachment of sensor in walls of the well. Deformation transfer element is arranged inside the sensor; the above element is made in the form of movable stock with sections of various diameter, the upper part of which is connected to central bar by means of threaded connection, and lower part is installed so that it is borne against the adjusting screw serving for zero position setting. Linear displacement converter made in the form of micro switches is connected by means of cable to the indicating unit which fixes the sequence of actuation of micro switches and lighting up of light-emitting diodes as deformation of roof rocks takes place.

EFFECT: higher operating reliability of the device and simpler design of the device.

1 dwg