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Connecting rod transmission type front wheel turning anti-swing mechanism

A technology of front wheel turning and connecting rod transmission, which is applied in the direction of wheels, aircraft parts, landing gear, etc., and can solve problems such as destroying aerodynamic shape, reducing aircraft range, and large dynamic resistance

Pending Publication Date: 2021-02-23
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the non-retractable nose landing gear, the front wheel steering actuator arranged outside will destroy the aerodynamic shape after flight, resulting in large aerodynamic resistance, which will reduce the range of the aircraft to a certain extent, increase fuel consumption, and affect the appearance sex

Method used

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  • Connecting rod transmission type front wheel turning anti-swing mechanism
  • Connecting rod transmission type front wheel turning anti-swing mechanism
  • Connecting rod transmission type front wheel turning anti-swing mechanism

Examples

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Embodiment

[0035] Such as Figure 5 Shown is an example of the use of the link transmission mechanism suitable for the front wheel turning anti-sway system. The landing gear of a certain type of aircraft is a non-retractable configuration, and the front landing gear is installed on the frame 3 of the fuselage. During the operation of the aircraft, the front wheel steering mechanism is added according to the user's needs, and the front wheel steering is realized by driving the front landing gear ring body through the steering actuator. According to calculations, the volume and length of the front wheel steering actuator 1 are relatively large, and if it is arranged outside the body structure, it will destroy the aerodynamic shape of the aircraft, generate greater aerodynamic resistance, and at the same time, seriously affect the aesthetics. Through the connecting rod transmission mechanism, the free arrangement of the turning actuator within a certain range can be realized, and the motio...

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Abstract

The invention discloses a connecting rod transmission type front wheel turning anti-swing mechanism which comprises a turning actuator torque transmission mechanism, a planar connecting rod mechanismand a swing reducer. The turning actuator torque transmission mechanism comprises a turning actuator, a torsion bar, a second support and a first support, the turning actuator is connected with the front undercarriage outer cylinder through the second support and the first support, the piston rod of the turning actuator is movably connected with the rocker arm end of a torsion bar, and the bar body of the torsion bar is partially hinged to the second support and a third mounting connecting lug of the front undercarriage outer cylinder, and can rotate around the axis. The planar connecting rodmechanism comprises a double-lug connecting rod, a middle connecting rod, a front undercarriage ring body and a torsion arm, the double-lug connecting rod is connected with the bottom end of the torsion rod body part, an upper connecting lug of the double-lug connecting rod is hinged to the swing reducer, the lower connecting lug of the double-lug connecting rod is connected with one end of the middle connecting rod, and the other end of the middle connecting rod is connected with the front undercarriage ring body; the nfront undercarriage ring body is arranged on the front undercarriage outercylinder and can rotate around the outer cylinder, and one end of the torque arm is connected with the outer portion of the front undercarriage ring body.

Description

technical field [0001] The invention belongs to the technical field of aircraft landing gear nose wheel turning and anti-swing system mechanism transmission, and in particular relates to a connecting rod transmission type front wheel turning anti-swing mechanism. Background technique [0002] Generally, the aircraft uses the nose wheel steering system to realize the steering control of the nose landing gear during the low-speed taxiing phase, and during high-speed taxiing, it can prevent the aircraft nose wheel from shimmy by switching to the shimmy reduction circuit or providing enough dynamic damping by the shimmy reducer. At present, large aircraft usually use two turning actuators installed symmetrically on the front landing gear to drive the front landing gear to realize the turning operation; while smaller aircraft usually use a single turning actuator or tie rod or steel cable installed on the front landing gear. Mechanisms such as driving front-wheel realize turning ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/50B64C25/36
CPCB64C25/50B64C25/36
Inventor 刘双王征宋宪龙王永和程迪迪邓云生
Owner HARBIN
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