Pneumatic-hydraulic control system for deceleration and return of UAV ejection device

Abstract

The invention discloses a deceleration and return air hydraulic control system of an unmanned aerial vehicle (UAV) ejection device, and the system comprises an electromagnetic unloading overflow valve of a main oil pump, the main oil pump, a motor of the main oil pump, an electromagnetic unloading overflow valve of an oil filling pump, the oil filling pump, a motor of the oil filling pump, a cartridge valve, a first one-way valve and a safe valve thereof, a hydraulic motor, an electro-hydraulic proportional cartridge valve, a first electromagnetic reversing valve, a first governing valve, a safe and stop valve block, a second one-way valve, a third one-way valve, an energy accumulator, a second governing valve, a second electromagnetic reversing valve, a fourth one-way valve, a first proportional overflow valve, a safe valve of the proportional overflow valve, a buffer braking hydraulic cylinder, a third electromagnetic reversing valve, a fifth one-way valve, a second proportional overflow valve, an emergency braking hydraulic cylinder, an oil tank and oil tubes which are communicated among all the parts. According to the deceleration and return air hydraulic control system of the UAV ejection device, the proportional overflow valves are adopted to control the hydraulic cylinders, so that the stable deceleration and braking of a sliding trolley is realized, and the reliability of the system is improved; an emergency braking unit and a buffer braking unit are adopted to form two stages of braking, so that the high reliability in the braking of the sliding trolley is ensured; a return control unit is adopted, so that the return speed of the sliding trolley can be governed.

Description

technical field [0001] The invention relates to a UAV ejection device, in particular to a deceleration return gas-hydraulic control system for the UAV ejection device. Background technique [0002] There are many ways to launch UAVs, such as hand throwing, airborne delivery, vehicle launch, ejection, rocket boosting, etc. Commonly used UAV ejection methods include elastic ejection, gas ejection, electromagnetic ejection and gas-hydraulic ejection. [0003] During the launch process of the UAV, the sliding car is generally used as the ejection carrier of the UAV, and it is accelerated together with the UAV on the ejection rack to the speed and height of the UAV's safe take-off. The UAV and the taxi car take off separately, and the taxi car starts to decelerate. After the deceleration is completed, it starts to return to prepare for the next stage of UAV launch. [0004] During the entire ejection process of the UAV, the deceleration braking and return control of the taxiing...

AI Technical Summary

Problems solved by technology

[0011] In view of the defects in the above-mentioned prior art, the object of the present invention is to provide a deceleration and return gas-hydraulic control system for the unmanned aerial vehicle ejection device. At the same time, it avoids the disadvantages of large impact in the braking process and low reliability of the return journey of the sliding trolley.

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