Locking mechanism for unfolding and folding of undercarriage of unmanned aerial vehicle

Abstract

The invention discloses a locking mechanism for unfolding and folding of an undercarriage of an unmanned aerial vehicle. The locking mechanism comprises a cylinder barrel, a piston rod and a power assembly, wherein the piston rod is slidably arranged in the cylinder barrel, the power assembly drives the piston rod to move, a through hole is formed in the piston rod along the axis of the piston rod, one end of the piston rod penetrates out of the cylinder barrel and a guide sleeve is arranged between the piston rod and the cylinder barrel, a rod head is connected to the penetrating end of the piston rod, and a sliding sleeve which is in sliding fit with the inner wall of the cylinder barrel is formed at the other end of the piston rod; and the power assembly comprises a motor and a transmission locking mechanism, wherein the motor provides power, and the transmission locking mechanism ensures that the piston rod is stably telescopic. The whole folding and unfolding process of the structure is smooth, the mechanical connection relation is simple, the connection is reliable, the design is very ingenious, the unlocking of the piston rod can be performed only through the rotation of a nut, the locking mechanism has enough support strength or rigidity, and can bear impact generated when the undercarriage is touched.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicle retractable systems, in particular to a locking mechanism for unmanned aerial vehicle landing gear retractable. Background technique [0002] The landing gear retractable system is an important part of the aircraft, and the working performance of the system directly affects the safety and maneuverability of the aircraft. The landing gear retractable system is mainly composed of a retractable actuator, a retractable position lock, a retractable operating mechanism, and a control system. Since the impact force of the landing gear in contact with the ground is relatively large after the landing gear is in place, this is a test of the support capacity of the locking mechanism in the actuator. Maintain high support stability. The existing actuator locking mechanism mainly includes two forms of mechanical lock or hydraulic (pneumatic) dynamic lock. The hydraulic (pneumatic) dynamic lock is expen...

AI Technical Summary

Problems solved by technology

The existing actuator locking mechanism mainly includes two forms of mechanical lock or hydraulic (pneumatic) dynamic lock. The hydraulic (pneumatic) dynamic lock is expensive and has a complicated structure, which is not suitable for small equipment with low cost such as drones. However, some existing mechanical locks have the disadvantages of complex structure and low stability, and there is a lot of room for improvement.

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