The invention belongs to the technical field of aircraft landing gears, and particularly relates to a gear and rack automatic disengaging and meshing mechanism. The gear and rack automatic disengaging and meshing mechanism comprises a main supporting column, a steering driving mechanism, a rotating hoop, an anti-torsion arm assembly and an aircraft wheel tire. The main supporting column comprises an outer cylinder connected with the rack and an actuating shaft sleeved with the outer cylinder, the steering driving mechanism drives a rotating hoop arranged on the outer cylinder in a sleeving mode to rotate, and the rotating hoop drives an airplane wheel tire installed on the actuating shaft to rotate through an anti-torsion arm assembly; the steering driving mechanism comprises a rack and a turning actuating cylinder for driving the rack to do axial reciprocating motion; wherein the rotating hoop is provided with a gear meshed with the rack, the gear comprises a gear tooth section and a smooth section, the rack comprises a toothed section in the middle and straight sections located at the two ends of the toothed section, the straight sections are provided with limiting bosses, and the smooth section partially falls between the limiting bosses and the toothed section to limit axial displacement of the rack.
本申请属于飞机起落架技术领域,特别涉及一种齿轮齿条自动脱开啮合机构包括:主支柱、转向驱动机构,旋转卡箍,防扭臂组件以及机轮轮胎;主支柱包括与机架连接的外筒以及套在外筒内的作动轴,转向驱动机构驱动套在所述外筒上的旋转卡箍旋转,旋转卡箍通过防扭臂组件驱动安装在作动轴上的机轮轮胎旋转;转向驱动机构包括齿条,驱动齿条轴向往复运动的转弯作动筒;其中,旋转卡箍具有与齿条啮合的齿轮,齿轮包括轮齿段以及光滑段,齿条包括中间的有齿段以及位于有齿段两端的平直段,平直段具有限位凸台,光滑段部分落入限位凸台与有齿段之间限制齿条轴向位移。
Gear and rack automatic disengagement meshing mechanism
一种齿轮齿条自动脱开啮合机构
2024-05-14
Patent
Elektronische Ressource
Chinesisch
IPC: | B64C AEROPLANES , Flugzeuge |
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