Rocker arm landing gear

A landing gear and articulation technology, applied in the field of rocker landing gear, can solve the problems of huge retractable space, serious weight, and lack of practicability, and achieve the effect of low retractable space requirements and compact structure

Inactive Publication Date: 2014-12-17
CHINA HELICOPTER RES & DEV INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Military helicopters generally adopt the outer "eight" type rocker landing gear based on the high-performance design requirements for crash resistance and the narrow fuselage, and the structural size of the rocker arm and the buffer is much larger than that of the conventional rocker landing gear. According to the existing design method The realization of retractable design requires a huge retractable space and brings serious weight problems, which is basically not practical

Method used

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings. A rocker landing gear, comprising a rocker 1, a buffer 2, a wheel 3, a retractable mechanism 4, a round pipe joint 5, the round pipe joint 5 is hinged with the fuselage; the rocker 1 is hinged with the round pipe joint 5, and can be wound around The round pipe joint 5 rotates; one end of the retractable mechanism 4 is hinged with the round pipe joint 5, and the other end is hinged with the fuselage; one end of the buffer 2 is hinged with the rocker arm 1, and the other end is hinged with the fuselage.

[0023] During installation, at first machine wheel 3, round pipe joint 5, retractable mechanism 4 are connected with rocking arm 1, then round pipe joint 5 is connected with fuselage by bolt. Then install the buffer, when installing the buffer 2, now connect the upper joint of the buffer to the fuselage by bolts, then swing the buffer and the rocker arm to align...

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Abstract

The invention discloses a rocker arm landing gear, belonging to the technical field of landing gears of aviation helicopters and airplanes. The rocker arm landing gear is characterized in that a rocker arm (1) is hinged with a circular tube joint (5) through a forked connector; the folding process is resolved into movement of the rocker arm in two directions. The movement in one direction is that the rocker arm and the circular tube joint are driven to rotate around a horizontal pipe by contraction of a buffer with an active stretching function, so that the landing gear contracts upwards, and the movement on the other direction is that the rocker arm is driven to rotate around the circular tube joint by movement of a contracting and releasing mechanism, so that the landing gear contract inwards, wherein the releasing process and the contracting process are opposite. The rocker landing gear is capable of achieving a contracting and releasing design of the rocker landing gear with a large outer splayed structure size within a small contracting and releasing space, and thus the rocker landing gear is compact in structure, low in demand on contracting and releasing space, and high in contracting and releasing efficiency, due to the design of the circular tube joint, rotation of the rocker arm around two directions is realized, and weight control is facilitated without the horizontal pipe.

Description

technical field [0001] The invention belongs to the technical field of aviation helicopters and aircraft landing gears, and relates to a rocker landing gear. Background technique [0002] The retractable design of the rocker landing gear and the outer "eight"-shaped landing gear is complicated, and has always been a difficult point in the design of landing gear, while the retractable design of the outer "eight"-shaped rocker landing gear is even more difficult. At present, there is only Very few aircraft adopt the outer "eight"-shaped rocker arm type retractable landing gear. The usual design method is to fix the rocker arm and buffer on a pillar, and rotate the pillar through the retractable mechanism to drive the rocker arm and buffer. . Military helicopters generally adopt the outer "eight" type rocker landing gear based on the high-performance design requirements for crash resistance and the narrow fuselage, and the structural size of the rocker arm and the buffer is mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/34
Inventor 杨赟黄建新刘晓志汪兰明
Owner CHINA HELICOPTER RES & DEV INST
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