Combined bearing testing machine supporting helicopter main rotor system

Abstract

The invention discloses a combined bearing testing machine supporting a helicopter main rotor system. The combined bearing testing machine comprises a support frame, a transmission shaft, a first bevel gear, a second bevel gear, a drive shaft, a main reducing gear, a motor, a hydraulic rotary joint, a loading cylinder, a hydraulic valve station, a rotor platform, a rotating ring, a fixing ring, spherical hinge bearings, double row thin wall bearings, variable distance pulling rods, a booster cylinder, an L-shaped swing rod, a vertical column, a connecting seat, a fixing frame, and oil pipes and other components. The combined bearing testing machine supporting the helicopter main rotor system can accurately test the service life of the combined bearing supporting the helicopter main rotor system, and has high accuracy. The combined bearing testing machine supporting the helicopter main rotor system can reduce waste in bearing use of the helicopter, and can reduce the maintenance cost.

Description

technical field [0001] The invention relates to the technical field of bearing testing equipment, in particular to a testing machine for supporting combined bearings of a main rotor system of a helicopter. Background technique [0002] During the flight of the helicopter, the failure of any component will cause catastrophic consequences, so the determination of the service life of the components of the helicopter is a very serious and important work. In order to accurately determine the service life of the components of the helicopter, the usual practice is to carry out fatigue tests on the components of the helicopter under simulated real working conditions, and then divide the fatigue life obtained through the test by a safety factor. service life. [0003] The main rotor system of the helicopter is one of the core components of the helicopter. The connection between the movable components of the main rotor system is realized by various bearings (spherical hinge bearings,...

AI Technical Summary

Problems solved by technology

Its disadvantages are: 1. It is difficult to accurately simulate the real working conditions of the various bearings of the helicopter main rotor system; 2. It is difficult to accurately judge which type or which bearing in the main rotor system is the weakest link, resulting in the fixed There is a large error in life

For safety considerations, the service life of main rotor system bearings is generally set low in the prior art, which not only causes waste in the use of bearings, but also increases maintenance costs

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