Automatic opening mechanism for unmanned aerial vehicle parachute cabin cover

Abstract

The invention relates to an automatic opening mechanism of an unmanned aerial vehicle parachute cabin cover. The automatic opening mechanism comprises a mounting frame, the parachute cabin cover, a pressure spring, a blocking piece, an extractor parachute, a parachute, a magnet iron sheet and an electromagnetic lock assembly. The electromagnetic lock assembly comprises a shell, a control circuit board, a silicon steel sheet and a coil; the electromagnetic lock assembly is located in a space formed by the mounting frame and the parachute cabin cover and is fixedly connected with the mounting frame through a shell; the control circuit board, the silicon steel sheet and the coil are fixedly arranged in the shell; the magnet iron sheet is fixed to the parachute cabin cover; a stud is fixedly connected to the mounting frame through a thread, and is sleeved with the pressure spring, and the initial state of the pressure spring is in the compression state. The mechanism has the beneficial effects that unmanned aerial vehicle space is effectively saved, magnetic attraction force generated by an electromagnet can tightly lock the parachute cabin cover, when parachute opening is needed, a flight control computer sends out signals, a power source is cut off, the magnetic attraction force disappears, the pressure spring exerts the effect, and meanwhile, under the air flow effect, the parachute cabin cover can be rapidly and accurately opened.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a novel automatic opening mechanism for an umbrella hatch of an unmanned aerial vehicle. Background technique [0002] UAV recovery is mainly divided into two methods: taxi landing and parachute landing. Rolling and landing has high requirements on the site. For small and medium-sized UAVs, for the sake of easy recovery, parachute landing is often used for recovery. [0003] When adopting parachute landing and recovery, the parachute is generally placed in the frame plate of the fuselage of the UAV and covered with a canopy cover. When the UAV completes its mission and needs to land, it must immediately open the umbrella hatch to release the parachute to complete the parachute opening action. When the UAV is performing a mission and does not need to open the parachute, if the canopy is opened, the parachute will open and the UAV will crash; similarly, when the ...

AI Technical Summary

Problems solved by technology

[0008] 1. It is necessary to install a steering gear, which increases the instability of the mechanism operation;

[0009] 2. During the flight of the UAV, the rocker arm on the top of the steering gear may become loose due to the vibration of the aircraft and other circumstances, causing the rocker arm to loosen and fall off by itself, causing the canopy to open by itself, which increases the risk;

[0010] 3. Only use the rocker arm of the steering gear to lock the umbrella canopy, but the compatibility between the self-opening mechanism of the canopy canopy and the locking mechanism has not been elaborated, and the compatibility needs to be verified

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