A centrifugal force loading device for a bearingless rotor flexible beam

A loading device and centrifugal force technology, applied in the testing of measuring devices, instruments, mechanical parts, etc., can solve the problem of no main propeller, bearingless rotor flexible beam fatigue test device, etc.

Active Publication Date: 2018-02-23
CHINA HELICOPTER RES & DEV INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no main propeller bearingless rotor flexible beam fatigue test device in China, so this kind of test cannot be carried out
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Method used

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  • A centrifugal force loading device for a bearingless rotor flexible beam
  • A centrifugal force loading device for a bearingless rotor flexible beam
  • A centrifugal force loading device for a bearingless rotor flexible beam

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Embodiment Construction

[0019] see below Figure 4 , Figure 5 The present invention is described in further detail. The bearingless rotor flexible beam centrifugal force loading device is composed of a centrifugal force outer frame 1, a thrust ball bearing 2, a rolling bearing 3, a cover plate 4, a flexible beam joint 5, and a lock nut 6; it is characterized in that the centrifugal force outer frame 1 is a frame Structure, the frame structure is symmetrical up and down, with a bearing installation hole on one side, the axis of the bearing installation hole is located on the intersection line of the symmetry plane of the centrifugal force outer frame 1, one end of the flexible beam joint 5 is a stepped rotating shaft, and the cover plate 4 is Circular boss structure with a through hole in the middle, the rolling bearing 3 is installed on the bearing installation hole of the centrifugal force outer frame 1, the boss of the cover plate 4 is pressed on the outer ring of the rolling bearing 3, the flexi...

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Abstract

The invention belongs to fatigue test techniques for flexible beams of bearingless rotor wings and relates to a centrifugal force loading device for a flexible beam of a bearingless rotor wing. The centrifugal force loading device is characterized by comprising a centrifugal force outer frame, a thrust ball bearing, an antifriction bearing, a cover plate, a flexible beam connector and a locknut; the centrifugal force outer frame is in a frame structure, and one lateral side of the centrifugal force outer frame is provided with a bearing mounting hole; one end of the flexible beam connector is provided with a stepped rotating shaft; the cover plate is in a circular boss structure, and the middle of the cover plate is provided with a through hole; the antifriction bearing is mounted on a bearing mounting hole of the centrifugal force outer frame; the boss of the cover plate presses the outer periphery of the antifriction bearing; the flexible beam connector penetrates the antifriction bearing to be connected onto the centrifugal force outer frame through the thrust ball bearing; a test load is applied through an execution mechanism. The centrifugal force loading device for the flexible beam of the bearingless rotor wing has the advantages that torque loading is unaffected when a centrifugal force is applied, and the purpose of testing the fatigue performance of the flexible beam of the bearingless rotor wing can be fulfilled.

Description

technical field [0001] The invention belongs to the fatigue test technology of a helicopter bearingless rotor flexible beam, and relates to the design of a helicopter bearingless rotor flexible beam fatigue test device. Background technique [0002] The bearingless rotor flexible beam is a key component of the bearingless rotor. This project belongs to the technical field of fatigue test of the dynamic parts of the rotor system, and is one of the key core technologies of the fatigue test of the fourth-generation spherical flexible rotor system. In order to grasp the fatigue performance of the bearingless rotor flexible beam, it is necessary to carry out fatigue tests on the bearingless rotor flexible beam on the ground, to grasp the fatigue characteristics of the bearingless rotor flexible beam, and then to give the life of the bearingless rotor flexible beam. [0003] At present, there is no main propeller bearingless rotor flexible beam fatigue test device in China, so thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
Inventor 李大海孙云伟夏国旺
Owner CHINA HELICOPTER RES & DEV INST
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