Multi-station synchronous lifting control system and operation method for aircraft takeoff and landing

A technology for synchronous lifting and control systems, which is applied in aircraft maintenance, fluid pressure actuation system safety, fluid pressure actuation system components, etc. It can solve the impact of the structure of the load object, uncontrolled variable load hydraulic cylinder, and easy damage to the body structure and other issues to achieve the effect of reducing quantity, reducing labor intensity and improving work efficiency

Pending Publication Date: 2018-08-17
凌云(宜昌)航空装备工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One is the valve control technology, which uses electromagnetic switches to control the operation or stop of the hydraulic cylinder, which has impact on the structure of the load object and is easy to damage the body structure
[0006] The second is the pump control technology. This technology changes the flow rate of the pump through the frequency converter to control the operating speed of the hydraulic cylinder, thereby controlling the synchronization; this technology can only control the lifting of the single-stage double-acting hydraulic cylinder or control the extension of the single-stage single-acting hydraulic cylinder.
The process of compressing the jack by the load's own weight is out of control, and the multi-stage variable section and variable load hydraulic cylinders are out of control

Method used

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  • Multi-station synchronous lifting control system and operation method for aircraft takeoff and landing
  • Multi-station synchronous lifting control system and operation method for aircraft takeoff and landing
  • Multi-station synchronous lifting control system and operation method for aircraft takeoff and landing

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Effect test

Embodiment 2

[0071] The control strategy of the multi-station synchronous lifting control system of the present invention includes:

[0072] 1) Overall control strategy

[0073] The system uses a proportional servo valve to adjust the oil supply of the hydraulic system to the jack, thereby controlling the operating speed of the jack. By comparing the position of each jack, calculating and analyzing the adjustment speed of each jack, adjusting the proportional servo valve to adjust the opening of the spool, and adjusting the operating speed of each jack to achieve a synchronous effect.

[0074] The oil pump is used to supply oil during the lifting stage of the jack, and the flow rate is adjusted by the proportional servo. The falling stage relies on the load to compress the jack, the jack returns oil, and the proportional servo valve adjusts the flow of the reverse oil circuit.

[0075] The control system monitors the position, pressure and force of each jack in real time, controls the op...

Embodiment 3

[0097] The operation method of carrying out aircraft jacking by adopting any one of the multi-station synchronous lifting control system includes the following steps:

[0098] S1: Maintenance preparation, make preparations for the aircraft jacking up according to the safety operation regulations;

[0099] S2: In-place operation, put down the wheels of the aircraft jack, push the aircraft jack to the vicinity of the support point of the jack, continuously move the aircraft jack so that the nest is aligned with the support point of the aircraft jack, put away the wheels of the aircraft jack, and place the support plate on the ground, manual or electric operation Lift the aircraft jack until the socket of the aircraft jack is in reliable contact with the supporting point of the aircraft jack and a certain contact force is generated;

[0100] S3: Leveling operation, set the corresponding jacking distance for each aircraft jack according to the leveling needs, start the system, aft...

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Abstract

The invention provides a multi-station synchronous lifting control system and an operation method for aircraft takeoff and landing. The multi-station synchronous lifting control system comprises multiple sets of aircraft jacks with independent hydraulic pressure stations, wherein each aircraft jack is provided with a displacement sensor, all the hydraulic pressure stations are connected with an electrical control console through signal cables and control cables separately, and the electrical control console is connected with a handheld control instrument; each independent hydraulic pressure station is connected with the corresponding aircraft jack through a jack hydraulic system, and lifting movement of the aircraft jacks is synchronously controlled; and the jack hydraulic system is connected with an electrical control system, and the movement of the jack hydraulic system is controlled. The control system aims to control aircraft postures, altitude difference changes and the like, control contact force value changes in the aircraft lifting process and reduce the damage of the lifting process to the aircraft structure in the process of using the jacks to lift an aircraft.

Description

technical field [0001] The invention belongs to the field of aircraft inspection and maintenance devices, and in particular relates to a multi-station synchronous lifting control system and an operation method for aircraft lifting and lowering, which are suitable for the lifting control of the aircraft in the general assembly and debugging of the aircraft and subsequent maintenance work. Background technique [0002] In view of the characteristics of large aircraft models, new requirements have been put forward for the tooling equipment used in its final assembly, commissioning and subsequent maintenance work - the jack, which requires precise control of the aircraft's attitude, Factors such as changes in height difference can meet the requirements of multi-point synchronous vertical lift and leveling of the aircraft. [0003] The traditional control method is realized by manual monitoring of the aircraft state. At present, there is no heavy-duty jack in China that can simu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66F3/46B66F3/24F15B11/22F15B11/17F15B21/02F15B20/00B64F5/40
CPCB66F3/46B64F5/40B66F3/24F15B11/17F15B11/22F15B20/007F15B21/02
Inventor 赖建政魏仁圣李强宣张海杨李然
Owner 凌云(宜昌)航空装备工程有限公司
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