MACHINE FOR TESTING SCREW SPRINGS Russian patent published in 2011 - IPC G01N3/32 

FIELD: machine building.

SUBSTANCE: machine contains power frame consisting of base, screw columns and movable cross bar, further, machine contains worm reducers of column rotation drive installed in base, also, reducers are conjugated with nuts installed in cross bar, electric engine of worm reducers drive, force sensor with measurement unit, deformation sensor with measurement unit, hydro-cylinder of double action with rod mounted on base coaxially with axle of power frame, intermediate cross bar and stop; additionally, machine contains pump with pressure regulator and gauge. With its one pipeline the pump is connected with the accumulator and an upper cavity of the hydro-cylinder of double action, while with its another pipeline it is connected with an electro-hydraulic servo-valve communicated with a lower cavity of the hydro-cylinder of double action.

EFFECT: upgraded reliability of test results.

2 cl, 1 dwg