Electric control hydraulic torsion measuring mechanism for star-shaped speed reducer

Abstract

The invention discloses an electric control hydraulic torsion measuring mechanism for a star-shaped speed reducer. The star-shaped speed reducer comprises a front casing, a rear casing and a pluralityof intermediate gears; the mechanism comprises an intermediate gear frame, a nozzle, a hydraulic transmitter sensor, an electric eddy current displacement sensor and a controller; the intermediate gear frame comprises a large-head plunger, a small-head plunger, a plurality of sliding rods and a plurality of shaft sleeves; the sliding rods and the shaft sleeves are in one-to-one correspondence with the intermediate gears respectively; one ends of the sliding rods are connected to the front casing, and the other ends of the sliding rods are connected to the rear casing; the shaft sleeves are arranged on the sliding rod in a sleeving mode; the large-head plunger and the small-head plunger are connected to the shaft sleeves; oil cylinders are arranged in the front casing and the rear casing;the large-head plunger is inserted into the oil cylinder of the front casing; the small-head plunger is inserted into the oil cylinder of the rear casing; and the electric eddy current displacement sensor and the hydraulic transmitter sensor are in signal connection with the controller. The mechanism has the advantages that the measuring precision is high, the direction of axial force can be reflected, and the health condition of the star-shaped speed reducer can be conveniently monitored.

Description

technical field [0001] The invention relates to an electronically controlled hydraulic torque measuring mechanism for a star reducer. Background technique [0002] At present, the principles of torque measurement / dynamometer of aero-engines are divided into two categories. One type has a torsion measuring plunger, which uses hydraulic pressure to balance the axial force of the intermediate gear (helical gear) or the counter torque of the gear transmission frame; the other type has a transmission Torsional elastic shaft, the torsional deformation of the elastic shaft is measured with an electromagnetic sensor. In the aero-engine test bench, torque scales with strain gauges are generally used for precise measurement and calibration of on-board torque measuring instruments. All torque measurement methods have adopted electronic conversion (non-electricity into electricity) and analog-to-digital conversion to realize digital processing, display torque, speed, power and other pa...

AI Technical Summary

Problems solved by technology

However, when the turboshaft engine develops into a small model (100-200kw), it encounters difficulties, and it is difficult to design a long elastic shaft with a high safety factor.

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