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Rocking arm-type undercarriage

A landing gear and rocker-type technology, which is applied in the fields of aircraft landing gear and aviation helicopters, can solve the problems of large retractable space and lack of practicability, and achieve low retractable space requirements, compact structure, and favorable weight control Effect

Inactive Publication Date: 2015-01-21
CHINA HELICOPTER RES & DEV INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to meet the requirements of anti-crash and narrow fuselage layout, military helicopters generally adopt the outer "eight"-shaped rocker landing gear. The retractable and retractable landing gear of this configuration needs to complete the inward and upward movements. , the conventional layout requires a large retractable space, which contradicts the narrow fuselage layout and is not practical

Method used

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  • Rocking arm-type undercarriage

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings. A kind of rocker type landing gear, comprises rocker arm 1, buffer 2, machine wheel 3, retractable mechanism 4, round pipe joint 5, and round pipe joint 5 is hinged with fuselage; Rocker arm 1 is hinged with round pipe joint 5, can Rotate around the round pipe joint 5; 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.

[0021] During installation, at first the wheel 3, the round pipe joint 5 are connected with the rocking arm 1, and then the round pipe joint 5 is connected with the fuselage by bolts. Then install buffer, retractable mechanism 4 successively. When installing the buffer 2, now connect the upper joint of the buffer to the fuselage through bolts, then swing the buffer and...

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Abstract

The invention relates to a rocking arm-type undercarriage, which belongs to the technical field of aviation helicopter and undercarriage. The rocking arm-type undercarriage is characterized by comprising a folding and unfolding mechanism (4) capable of being a linkage mechanism with a folding and unfolding actuator cylinder or the folding and unfolding actuator cylinder; a circular tube joint (5) hinged to an undercarriage body through a fork-form joint; and a buffer (2) having an active telescoping function. The undercarriage can realize bidirectional folding and unfolding. The rocking arm-type undercarriage has the characteristics that 1)through the contraction motion of the buffer having the active telescoping function, a rocking arm is driven for winding around a transverse tube of the circular tube joint to rotate, the undercarriage is upwardly folded; in addition, the circular tube joint and the rocking arm are driven through the motion of the folding and unfolding mechanism for winding around the undercarriage body to rotate, and the undercarriage is inwardly folded, and the folding process and unfolding process are opposite. The rocking arm-type undercarriage can realize a folding and unfolding design of a toe out-shaped large structural size rocking arm type undercarriage in a small folding and unfolding space, structure is compact, requirements for folding and unfolding space are low, folding and unfolding efficiency is high, rotation of the rocking arm at two directions can be realized by a circular tube joint design, and the transverse tube is not required, so that weight is conveniently controlled.

Description

technical field [0001] The invention belongs to the technical field of aviation helicopters and aircraft landing gears, and relates to a rocker type landing gear. Background technique [0002] In order to meet the requirements of anti-crash and narrow fuselage layout, military helicopters generally adopt the outer "eight"-shaped rocker landing gear. The retractable and retractable landing gear of this configuration needs to complete the inward and upward movements. , the conventional layout requires a large retractable space, which contradicts the narrow fuselage layout and is not practical. The present invention aims at proposing a novel rocker-arm type landing gear configuration scheme to realize the retractable design of the outer "eight"-shaped large-scale structure size rocker-arm type landing gear. Contents of the invention [0003] Purpose of the present invention: [0004] A new type of rocker-arm landing gear is designed to realize the retractable design of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/10
Inventor 黄建新杨赟冯胜全方建义
Owner CHINA HELICOPTER RES & DEV INST
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