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A hydraulic loading system and loading method for aircraft ground test bench

A technology of hydraulic loading and ground testing, applied in mechanical equipment, fluid pressure actuating devices, servo motors, etc., can solve the problem of inability to precisely control the size and direction of the load, and achieve simple and effective functions, sufficient simulation, and reliable demonstration.

Active Publication Date: 2020-04-17
BEIJING MECHANICAL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned analysis, the present invention aims to provide a hydraulic loading system and loading method for aircraft ground test benches, which solves the problem in the prior art that the external load simulation and retraction cannot be accurately controlled by the mechanical method in the size and direction of the load The problem

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  • A hydraulic loading system and loading method for aircraft ground test bench
  • A hydraulic loading system and loading method for aircraft ground test bench
  • A hydraulic loading system and loading method for aircraft ground test bench

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Embodiment 1

[0039] This embodiment provides a hydraulic loading system for an aircraft ground test stand, mainly used for landing gear and hatches of an aircraft, such as Figure 1 to Figure 4 As shown, it includes hydraulic loading mechanism, measurement and control mechanism and power supply. Wherein, the hydraulic loading mechanism includes a hydraulic cylinder 8, a servo valve 4, a switch valve 2, an oil source 9 and an oil tank 10, the common port of the servo valve 4 is connected with the piston cavity of the hydraulic cylinder 8, and the oil inlet port of the servo valve 4 passes through the switch valve 2 is connected to the oil source 9, and the oil return port of the servo valve 4 is connected to the oil tank 10; the piston rod cavity of the hydraulic cylinder 8 is connected to the oil source 9 through the switch valve 2; the measurement and control mechanism is connected to the servo valve 4 and the switch valve 2 respectively, The power supply is electrically connected to the ...

Embodiment 2

[0059] The present embodiment provides a kind of loading method that is used for aircraft ground test bench, comprises the following steps:

[0060] Step 1: The measurement and control system sends a loading command, the oil inlet port of the servo valve is connected to the common port, the oil source is connected to the piston chamber of the hydraulic cylinder through the switch valve and the servo valve in turn, and the oil source is connected to the piston rod chamber of the hydraulic cylinder through the switch valve , the oil source supplies oil to the piston cavity and the piston rod cavity respectively, and the piston rod pushes the loading object for ground test loading.

[0061] Step 2: Collect the piston chamber pressure data, the piston rod chamber pressure data, the liquid outlet pressure data of the oil source, the loading displacement of the hydraulic cylinder and the loading force applied by the hydraulic cylinder in real time and transmit them to the measurement...

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Abstract

The invention discloses a hydraulic loading system and loading method for an aircraft ground test bed, and belongs to the technical field of aircraft ground tests. The hydraulic loading system and loading method for the aircraft ground test bed solve the problem that in the prior art, the magnitude and direction of the load cannot be accurately controlled due to the fact that external load simulation deploying and retracting are performed by adopting a mechanical method. The hydraulic loading system includes a hydraulic loading mechanism, a measuring and controlling mechanism and a power source. The hydraulic loading mechanism includes a hydraulic cylinder, a servo valve, a switching valve, an oil source and an oil tank. A public port of the servo valve is connected with a piston cavity ofthe hydraulic cylinder, an oil inlet port of the servo valve is connected with the oil source through the switching valve, and an oil return port of the servo valve is connected with the oil tank. Apiston rod cavity of the hydraulic cylinder is connected with the oil source through the switching valve. The measuring and controlling mechanism is separately connected with the servo valve and the switching valve in a signal mode. The power source is separately and electrically connected with the servo valve and the switching valve, and a piston rod of the hydraulic cylinder is connected with aloading object. The hydraulic loading system and loading method can be used for the aircraft ground test bed.

Description

technical field [0001] The invention relates to an aircraft ground test device, in particular to a hydraulic loading system and a loading method for an aircraft ground test stand. Background technique [0002] Among the various working parts of modern aircraft, the door / landing gear is closely related to the safety of the aircraft. The probability of aircraft accidents caused by the retraction and retraction of the landing gear or the failure of the door opening and closing system is relatively high. Therefore, loading the aircraft door and landing gear Conducting research is of great significance. [0003] During the take-off or landing phase of the aircraft, the landing gear and the hatch need to be retracted or lowered. At this time, the landing gear and the hatch will be affected by aerodynamic force. In order to shorten the development cycle of aircraft landing gear and reduce development costs, the ground equipment simulation of the laboratory environment is usually p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/08F15B13/044F15B1/02
CPCF15B1/02F15B11/08F15B13/044F15B2013/0448F15B2211/6306F15B2211/6336
Inventor 董凯曾红丰张春峰王鹏飞
Owner BEIJING MECHANICAL EQUIP INST