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A fault simulation experiment device for helicopter tail drive system

A tail drive system and fault simulation technology, applied in the field of helicopter tail drive system fault simulation experiment device, can solve the problems of strong, broken parts and vibration, etc.

Active Publication Date: 2017-10-20
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a certain bearing or gear part in the tail drive system fails, it will cause strong vibration under the high-speed rotation of the tail drive shaft, causing the parts to break and damage, resulting in the failure of the tail rotor control, which seriously threatens flight safety.

Method used

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  • A fault simulation experiment device for helicopter tail drive system
  • A fault simulation experiment device for helicopter tail drive system
  • A fault simulation experiment device for helicopter tail drive system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1 Simulation of pitting faults in the inner ring of a double row tapered roller bearing.

[0052] Replace the double-row tapered roller bearing 41 supporting the driving wheel of the first reducer with a faulty bearing with pitting faults in the inner ring, start the drive motor 2, set the input speed to 1800r / min, and connect the sensor output line to the B&K data acquisition system. After the B&K data acquisition system converts the analog signal into a digital signal, the data is transmitted to the computer data acquisition software through the network cable, and the vibration acceleration time series signal is obtained. The time domain signal diagram is as follows Figure 6 .

Embodiment 2

[0053] Example 2 Simulation of Pitting Corrosion Faults in the Outer Ring of Double Row Tapered Roller Bearings

[0054] Replace the double-row tapered roller bearing 41 supporting the driving wheel of the first reducer with a faulty bearing with pitting faults on the outer ring, start the drive motor 2, set the input speed to 1800r / min, and connect the sensor output line to the B&K data acquisition system. After the B&K data acquisition system converts the analog signal into a digital signal, the data is transmitted to the computer data acquisition software through the network cable, and the vibration acceleration time series signal is obtained. The time domain signal diagram is as follows Figure 7 .

Embodiment 3

[0055] Example 3 Simulation of Roller Pitting Corrosion Fault of Double Row Tapered Roller Bearing

[0056] Replace the double-row tapered roller bearing 41 supported by the driving wheel of the first reducer 4 with a faulty bearing with roller pitting faults, start the drive motor 2, set the input speed to 1800r / min, and connect the sensor output line to the B&K data acquisition system, the B&K data acquisition system converts the analog signal into a digital signal, and then transmits the data to the computer data acquisition software through the network cable to obtain the vibration acceleration time series signal. The time domain signal diagram is as follows Figure 8 .

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Abstract

A helicopter tail drive system failure simulation experiment device, which includes a test bench, the test bench includes a drive motor, a coupling A, a first speed reducer, a second speed reducer, a shaft coupling B, a load motor, and a support; The first reducer is connected to the drive motor through coupling A, and the axis of the connecting shaft between the first reducer and the second reducer is 135°; the second reducer is connected to the load motor through coupling B; the drive motor, shaft coupling The gear A, the first reducer, the second reducer, the coupling B, and the load motor are sequentially connected and fixed on the support; it can realize the pitting, peeling, wear, crack, and gluing of the bearings and gears of the helicopter tail drive system, and Simulation experiments of typical faults such as rotor deflection; it is widely used in the research of fault evolution mechanism, signal feature extraction method, early fault diagnosis method, health maintenance method and strategy of helicopter tail drive system.

Description

technical field [0001] The invention belongs to the technical field of a helicopter tail drive system, and in particular relates to a fault simulation experiment device for a helicopter tail drive system. Background technique [0002] As a part of the structural dynamics of the helicopter transmission system, the helicopter tail transmission system is an important subsystem of the helicopter transmission system. Torque torque, so as to realize the heading control of the helicopter, its operating status directly affects the performance of the entire transmission system and even the entire helicopter. If a certain bearing or gear part in the tail drive system fails, under the high-speed rotation of the tail drive shaft, it will cause strong vibration, break and damage the parts, and lead to the failure of the tail rotor control, which seriously threatens flight safety. How to carry out accurate condition monitoring, fault diagnosis and optimal operation on it is a significant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/02
Inventor 蒋玲莉华登荣唐思文李学军陈安华黄良沛
Owner HUNAN UNIV OF SCI & TECH
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