HYDRAULIC TORQUE LOADER FOR TESTING GEAR TRANSMISSIONS AND REDUCTION GEARBOXES IN CLOSED CIRCUIT Russian patent published in 2020 - IPC G01M13/02 

FIELD: machine building.

SUBSTANCE: invention relates to machine building industry, mainly to reduction engineering in various engineering fields. Hydraulic torque loader comprises cylinder-piston pair, cylinder of which is fixed on first of loaded shafts and has on its inner surface guides, eliminating possibility of turning piston, arranged inside cylinder and forming in cylinder above-piston cavity, connected to pipeline of hydraulic medium. Piston is made hollow, inner surface of which is connected by means of non-self-braking screw transmission to the second of loaded shafts, which is conjugated with hydraulic cylinder housing through thrust bearing. Connection of above piston cavity with pipeline of hydraulic medium is made by means of axial drilling of the first shaft, to which hydraulic medium is supplied through radial shaft hole, arranged in sealing unit, made in the form of opposite installed end seals, arranged in single housing, to which hydraulic medium pipeline is connected.

EFFECT: expansion of functional capabilities of hydraulic torque loader for tests of gear transmissions and reduction gearboxes in closed circuit when increasing the moment of loader operation range due to use of increased pressures with minimization of parasitic leaks of hydraulic medium at input of hydraulic medium inside the rotating cylinder with piston.

1 cl, 1 dwg