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Helicopter rotor hub restraint test bench and its test method

A helicopter rotor and stopper technology, applied in the field of helicopters, can solve problems such as abnormal tripping of the hub stopper, safety accidents, uneven opening of the blades, etc.

Active Publication Date: 2018-01-30
NINGBO XINGJIAN SPACE MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Helicopters generally have multiple blades, correspondingly, the number of hub stoppers is also multiple, so at a certain speed, whether the tripping of the hub stopper is normal is very critical, because the tripping of the hub stopper does not occur. Normal, if the paddles open unevenly, it will cause serious safety accidents

Method used

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  • Helicopter rotor hub restraint test bench and its test method
  • Helicopter rotor hub restraint test bench and its test method
  • Helicopter rotor hub restraint test bench and its test method

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Embodiment Construction

[0030] The invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] See attached figure 1 to attach Figure 5 Shown, a kind of helicopter rotor hub limiter test bench, it comprises base 1; Transmission shaft 2, this transmission shaft 2 is arranged on the base 1 and along the vertical direction; , the driving device is connected with the transmission shaft 2; the speed tester installed in the base 1 and electrically connected with the external control system is used to test the speed of the transmission shaft 2; the support structure for installing the helicopter rotor, the support structure covers Connected to the upper end of the transmission shaft 2 and limited by the circumferential direction of the transmission shaft 2; an angle testing device used to test the opening angle α of the hub stopper 5, the angle testing device is electrically connected to an external control system; used for installat...

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Abstract

The invention discloses a helicopter rotor hub bridle test board which comprises a pedestal (1), a transmission rotating shaft (2), a driving device connected with the transmission rotating shaft (2), a rotating speed measuring device used for measuring rotating speed of the transmission rotating shaft (2), a support structure used for installing a helicopter rotor, an angle measuring device used for measuring opening angles alpha of hub bridles (5), an installing structure used for installing the angle measuring device and an electric conduction slip ring (6), wherein the support structure sleeves on an upper end of the transmission rotating shaft (2) and limits displacement of the transmission rotating shaft (2) in a circumferential direction, and the angle measuring device is mounted on the installing structure. After the above structure is adopted, the helicopter rotor hub bridle test board can detect relation between the opening angles of all the hub bridles on a helicopter rotor and bridle rotating speed; the test board is high in testing precision and stable in system operation.

Description

technical field [0001] The invention relates to the technical field of helicopters, in particular to a test bench for a helicopter rotor hub stopper and a test method thereof. Background technique [0002] Such as figure 1 with figure 2 As shown, the helicopter rotor generally includes a hub 3 , a blade swing bar 4 and a blade 14 , the blade 14 is mounted on the hub 3 through the blade swing bar 4 , and the blade 14 rotates with the rotation of the hub 3 . A hub stopper 5 is generally provided at the connection between the hub 3 and the blade swing bar 4 on the helicopter rotor. The propeller hub 3 is hinged with the propeller swing rod 4; the propeller hub stopper 5 includes a limit plate 5.1 and a tension spring 5.2, and the limit plate 5.1 is fixed under the propeller swing rod 4 and close to the propeller hub 3 and the propeller swing rod 4 One end of the tension spring 5.2 is connected with the stop plate 5.1, and the other end is connected with the propeller hub 3;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 李武立
Owner NINGBO XINGJIAN SPACE MACHINERY
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