Measuring and testing – Toothed gear
Patent
1978-08-30
1979-12-04
Woodiel, Donald O.
Measuring and testing
Toothed gear
G01M 1302
Patent
active
041765494
ABSTRACT:
A hydraulic test stand for testing of shafts, couplings, gears and gear transmission systems. A pair of hydro-units are provided, one of which functions as a pump and the other one of which functions as a motor. Each of the hydro-units has a shaft thereon. A reversible drive motor is provided for driving the shaft of the hydro-unit functioning as a pump. High pressure lines and low pressure lines are connected in circuit with the hydro-units to provide an oil circulation circuit. The setting member has a pair of rotatable shafts thereon interconnected therewith. A driving rotation of either one of the shafts effects a driven rotation of the other shaft so that the torque output on the shaft from the hydro-unit which functions as a motor is included into the power flow consideration of the test stand and is used to drive through the test member the hydro-unit which functions as a pump so that the drive means must then only yet balance out the occurring losses within the system. Pressure-regulating devices for limiting the pressures in the high pressure and low pressure lines are provided and, in addition, an arrangment is provided for compensating for leakage losses within the oil circulating circuit.
Carl Hurth Maschinen und Zahnradfabrik
Woodiel Donald O.
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