Retracting and releasing structure of multi-wheel-set undercarriage for model airplane

CN224270125UActive Publication Date: 2026-05-26DONGGUAN XFLY-MODEL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN XFLY-MODEL TECH CO LTD
Filing Date
2025-04-11
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing multi-wheel landing gear retraction and extension functions of model aircraft are difficult to achieve in a high-efficiency and reliable manner, and traditional servo control methods are insufficient to meet the stability and safety requirements of large-scale and heavy-duty model aircraft.

Method used

Employing a high-tension servo, rotating crossbar, and rotating tie rod structure, along with a movable wheel frame design, it achieves reliable deployment and retraction of the multi-wheel landing gear assembly. The 7-row, 2-column landing gear assembly structure distributes weight and ground pressure, enhancing load-bearing capacity and stability.

Benefits of technology

It achieves reliable retraction and extension of multi-wheel landing gear, enhancing the takeoff and landing stability and load-bearing capacity of model aircraft, and meeting the safety requirements of heavy-duty model aircraft.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a folding and unfolding structure of a multi-wheel-set landing gear for a model airplane. A landing wheel frame comprises a fixed frame rod and two groups of movable wheel frames, a plurality of landing wheel sets arranged in the length direction of the movable wheel frame are installed on the movable wheel frame. The movable wheel frames are arranged on the two sides of the fixed frame rod; the side end of the movable wheel frame is rotationally mounted at the side end of the fixed frame rod through a rotating shaft; the server is installed in the middle of the two movable wheel carriers, and a horizontally-arranged rotating cross rod is arranged at the lower end of the push rod. A group of rotating pull rods are respectively arranged between the rotating cross rod and the two groups of movable wheel carriers; two ends of the rotating pull rods are respectively hinged and matched with the rotating cross rod and the movable wheel carriers; in order to solve the problem that the folding and unfolding functions of an existing model airplane multi-wheel undercarriage set are difficult to achieve, reliable folding and unfolding of the multi-wheel undercarriage set are achieved through cooperative work of a large-tension server, a rotating transverse rod, a rotating pull rod and other structures, and the defects of a traditional servo control mode in application of the multi-wheel undercarriage are overcome.
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