Unmanned aerial vehicle hydraulic catapult launching system

Abstract

The invention aims to provide an unmanned aerial vehicle hydraulic catapult launching system which is compact in structure and short in response time. A buffer energy-absorption system is integrated in a hydraulic energy system. The technical scheme includes that in the hydraulic energy system, high-pressure hydraulic oil pumped out by a tandem pump group is divided into two paths, one path is connected with an energy accumulator through a hydraulic pipeline, the other path is connected with an oil tank through an electromagnetic overflow valve, the energy accumulator is connected with an oil inlet of a hydraulic motor through the hydraulic pipeline and an inserting valve with an electromagnetic directional valve, a sliding trolley slides in an accelerated manner under the action of power outputted by the hydraulic energy system, an electromagnet 2DT and an electromagnet 3DT are simultaneously powered off after the launching speed of an unmanned aerial vehicle is reached, the inserting valve is closed, the sliding trolley continues to move forwards under the inertia action of the sliding trolley, a traction belt drives the hydraulic motor to rotate reversely, the hydraulic oil is charged to the energy accumulator, kinetic energy of the sliding trolley is consumed, the sliding trolley decelerates to stop, and a buffer energy-absorption function is achieved.

Description

technical field [0001] The invention relates to a hydraulic catapult take-off system for an unmanned aerial vehicle, in particular to a hydraulic energy system integrated with a buffer energy-absorbing system. Background technique [0002] In recent years, with the development of science and technology and military equipment technology, unmanned aerial vehicles are becoming an indispensable weapon in modern high-tech warfare in the military field, and are increasingly equipped with land, sea, and air forces for attack , reconnaissance and other combat missions and target drone training missions. In the civilian field, the application of drones is also increasing, such as: land and resources survey, emergency relief, deep forest fire monitoring, environmental monitoring, etc. [0003] The launch and recovery system is an important functional system of UAVs, and it is a necessary technical guarantee to meet the various needs of UAVs such as flexibility, reusability, and high ...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to design or improve the flow path in the cylinder according to the flow rate flowing into the cylinder, which has disadvantages such as complicated process and difficult processing;

[0008] 2) The speed increaser mostly adopts a pulley speed increaser, which has disadvantages such as complex structure and easy wear of the traction rope;

[0009] 3) Water turbine energy absorbing devices or oil-gas buffer energy absorbing devices are mostly used as buffer energy absorbing devices, which have disadvantages such as difficult design and calculation and large volume

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