Fatigue test device and method for propeller hub connecting bolt of helicopter main rotor shaft
A fatigue test and main rotor shaft technology, applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc., can solve problems such as the inability to meet the single heavy load of the hub connecting bolts, acceleration of complex working conditions, etc.
Pending Publication Date: 2022-04-12
HARBIN DONGAN ENGINE GRP
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The traditional test method is to install the hub connecting bolts and the propeller to the rotating shaft of the tester for rotation test. Although this test method c
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The invention relates to the technical field of fatigue tests of helicopter main rotor shaft propeller hub connecting bolts, in particular to a fatigue test device and method for helicopter main rotor shaft propeller hub connecting bolts. Comprising a 1 # torque hydraulic cylinder, a 2 # lateral force hydraulic cylinder, a 3 # lateral force hydraulic cylinder, a 4 # torque hydraulic cylinder, a 5 # lift hydraulic cylinder, a 6 # lift hydraulic cylinder, a 7 # lift hydraulic cylinder, an 8 # lift hydraulic cylinder, a rotor simulation piece, a test piece, a base and a case fake piece, and the 1 # torque hydraulic cylinder and the 4 # torque hydraulic cylinder apply horizontal torque loads in the same direction to the two blade simulation pieces respectively; the 2 # lateral force hydraulic cylinder and the 3 # lateral force hydraulic cylinder apply horizontal lateral force load to the propeller hub simulation piece; and the 5 # lift hydraulic cylinder, the 6 # lift hydraulic cylinder, the 7 # lift hydraulic cylinder and the 8 # lift hydraulic cylinder respectively apply loads in the vertical direction to the four paddle simulation pieces.
Description
technical field [0001] The invention relates to the technical field of fatigue test of connecting bolts of a helicopter main rotor shaft and hub, in particular to a fatigue test device and method for connecting bolts of a helicopter main rotor shaft and hub. Background technique [0002] Helicopter main rotor shaft propeller hub connection bolts are important transmission components of helicopters and also the safety guarantee unit for helicopter performance. Its function is to connect and fasten the propeller to the main rotor shaft. When the helicopter is started, the power is transmitted to the propeller through the main rotor shaft and the hub connecting bolt, and the propeller finally forms lift through rotation. The performance of the hub connecting bolt is the key to ensure the safety of the helicopter, so the performance of the propeller hub connecting bolt needs to be fully tested Verification can meet the installation requirements. The traditional test method is t...
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Inventor 辛景雷王海波赵国峰夏丰年宁朝辉李爽赵吉顺
Owner HARBIN DONGAN ENGINE GRP