TEST BENCH FOR MAIN REDUCTION GEARS OF HELICOPTERS Russian patent published in 2013 - IPC G01M15/00 

FIELD: machine building.

SUBSTANCE: bench includes two power circuits (8), (9) of inlet shafts (10), (11) and one power circuit (12) of outlet tail rotor drive shaft (13), upper closing reduction gear (6) with switching mechanisms of transfer ratios (7), which closes three above described power circuits (8), (9), (12). Each of power circuits (8), (9) includes connection shafts (18), a loading mechanism made in the form of loading device (20) based on gear transmission with the specified transfer ratio, clutch coupling (21), intermediate conical closing reduction gear (22), intermediate high-speed closing reduction gear (24) and replaceable inlet shaft (10), and power circuit (12) of outlet tail rotor drive shaft (13) includes intermediate reduction gear (25), loading device (26) and intermediate closing reduction gear (27). Upper closing reduction gear (6) and reduction gear of electric drive (1) have the possibility of changing the rotation speed of shafts of power circuits (8), (9), (12) and providing the test of single-type tested main reduction gear (17) with similar kinematic diagram. Planetary row of upper closing reduction gear (6) is similar to planetary row of tested reduction gear (17) and located mirror-like to it, and transfer ratio of closed kinematic diagram of each power circuit (8), (9), (12) is equal to one.

EFFECT: possibility of performing tests of single-type main reduction gears with specified torque moments and rotation speeds of three power circuits.

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