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A Fatigue Test System for Large Helicopter Main Propeller Steering Gear

A technology of main propeller steering gear and testing system, which is applied in the direction of machine/structural component testing, measuring devices, instruments, etc., and can solve the problems of lacking a large-scale helicopter main propeller steering gear test system and the inability to simulate the hydraulic pressure of actuators, etc. , to achieve the effect of low cost

Inactive Publication Date: 2015-12-02
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main propeller steering gear of a large helicopter usually works under hydraulic drive as a subsystem of the helicopter, which not only bears the hydraulic pressure of its own actuator, but also bears the aerodynamic load. The conventional fatigue testing machine can only simulate the external aerodynamic load, and the It cannot simulate the hydraulic pressure of the actuator. At present, there is still a lack of an effective and practical test system for the fatigue test of the main propeller steering gear of a large helicopter.

Method used

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  • A Fatigue Test System for Large Helicopter Main Propeller Steering Gear
  • A Fatigue Test System for Large Helicopter Main Propeller Steering Gear
  • A Fatigue Test System for Large Helicopter Main Propeller Steering Gear

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specific Embodiment approach 1

[0023] Specific implementation mode one: combine Figure 1 to Figure 4 Specific embodiments of the present invention will be described. exist Figure 4 In the present invention, a large-scale helicopter main propeller steering gear fatigue test system is composed of a fatigue testing machine 1, a hydraulic station 5, a rotary direct drive valve 6, an actuator tester 8, a digital storage oscilloscope 7, a conversion joint 4, an upper , lower joints 2, 9 and large main paddle steering gear 3 are formed. The position connection relationship between them is as follows: the upper and lower joints 2 and 9 are installed on the fatigue testing machine 1, the two ends of the large main propeller steering gear 3 are installed on the upper and lower joints 2 and 9, and the hydraulic station 5 is connected to the rotating machine through the oil pipe. The direct drive valve 6 is connected, the rotary direct drive valve 6 is connected with the large main propeller steering gear 3, the ac...

specific Embodiment approach 2

[0027] Specific embodiment two: the difference between this embodiment and specific embodiment one is the selection of fatigue testing machine 1, which can be conventional fatigue testing machines such as MTS and INSTRON or self-made fatigue testing machines, large-scale main propeller steering gear fatigue testing testing system Other design ideas and connection methods are the same as those in the first embodiment.

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Abstract

A large helicopter main blade steering machine fatigue test system is composed of a fatigue testing machine, a hydraulic station, a rotary direct driving valve, an actuator tester, a digital storage oscilloscope, an adapter substitute, an upper adaptor, a lower adaptor and a large main blade steering machine, wherein the upper adaptor and the lower adaptor are installed on the fatigue testing machine, the two ends of the large main blade steering machine are installed on the upper adaptor and the lower adaptor, the hydraulic station is connected with the rotary direct driving valve through an oil pipe, then, the rotary direct driving valve is connected with the large main blade steering machine, the actuator tester is connected with the rotary direct driving valve through a circuit, and the digital storage oscilloscope is connected with the actuator tester to display the relevant information of the large main blade steering machine. The large helicopter main blade steering machine fatigue test system not only can simulate the external aerodynamic loading effect but also can simulate the hydraulic pressure effect of an actuator, and the test result has important engineering application value for determining the fatigue service life of large helicopter main blade steering machines.

Description

technical field [0001] The invention provides a large-scale helicopter main propeller steering gear fatigue test system, which belongs to the technical field of test and test. Background technique [0002] The main propeller steering gear of a large helicopter is constantly subjected to alternating loads during the working process, and its fatigue life must be assessed during design and application. The main propeller steering gear of a large helicopter usually works under hydraulic drive as a subsystem of the helicopter, which not only bears the hydraulic pressure of its own actuator, but also bears the aerodynamic load. The conventional fatigue testing machine can only simulate the external aerodynamic load, and the It cannot simulate the hydraulic pressure of the actuator. At present, there is still a lack of an effective and practical test system for the fatigue test of the main propeller steering gear of a large helicopter. For this reason, the present invention integr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00
Inventor 熊峻江田本鉴刘猛
Owner BEIHANG UNIV
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