DEVICE FOR FIELD TESTS OF ROCKS Russian patent published in 2011 - IPC E21C39/00 

FIELD: mining.

SUBSTANCE: device for field testing of rocks comprises a cylindrical vessel for arrangement in a well, a puncheon installed in the vessel perpendicularly to its axis, a hinged torque link, the central hinged joint of which is connected to the puncheon, two sliders, on which extreme hinged joints of the torque link are installed, a stem with a limiter, movable relative to the vessel, interacting with the first slider, a nut installed on the stem and interacting with the second slider, an inertial weight movably installed on the stem and spring that connects the weight to the stem. At the same time the weight is additionally connected to the second spring, arranged at the opposite side of the weight relative to the first spring. Besides, springs have various rigidity. Bushes are fixed at the ends of springs, which are movably arranged on the stem and are made of electromagnetic material. Fixators of bushes position are installed on the vessel with the possibility to change their distance from the vessel, being arranged in the form of electromagnets. A fixator of the weight position on the stem is installed on it.

EFFECT: increased volume of information received during tests.

3 cl, 1 dwg