HYDRAULIC TEST MACHINE Russian patent published in 2011 - IPC G01N3/10 

FIELD: machine building.

SUBSTANCE: machine consists of power frame, of loading hydro-cylinder, of claws, of deformation sensor, of force sensor, of pump unit, of device for working fluid supply from pump to hydro-cylinder, of system of control and setting mode of machine operation, of unit for comparison of setting signal and one of signals of sensors of deformation or force with "error signal" amplifier. The device for supply of working fluid from the pump to the hydro-cylinder consists of the said pump unit with a relief valve, of a hydro-distributor with an eccentric of set-off drive of the second valve with electric motor and with a return spring. The system of control and setting mode of machine operation consists of potentiometer, of the driven adjusted electric motor of potentiometer rotation and of the unit of drive setting velocity and direction of rotation of the driven adjusted electric motor and of function switch either by force or by deformation. Also, the system includes the said unit of comparison of a potentiometer setting signal and one of signals of deformation or force sensors with "error signal" amplifier.

EFFECT: high reliability of machine, simple maintenance, sufficient metrological characteristics and relatively low cost.

1 dwg