Aircraft cabin door actuator cylinder with internal lock mechanism
A technology for actuators and lock mechanisms, which is applied to aircraft doors, aircraft accessories, fluid pressure actuators, etc., and can solve the problems of tight telescopic movement of actuators for aircraft doors, unstable unlocking pressure, etc.
Pending Publication Date: 2021-03-12
JIANGXI HONGDU AVIATION IND GRP
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Problems solved by technology
[0004] In order to improve the problems of the tight telescopic movement of the actuator of the aircraft cabin door and the instability of the unlocking pressure, the invention provides an actuator of the aircraft cabin door with an internal locking mechanism.
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[0013] The following will combine Figure 1 to Figure 3 , clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only a specific embodiment of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0014] Such as figure 1 and figure 2 As shown, an aircraft door actuator with an internal lock mechanism includes an upper end cover 1, a compression spring 2, a steel ball 3, an outer cylinder 4, a supporting bush 5, an earring bolt 6, a lower end cover 7, and a piston rod 8 , Nut 9, top ring 10, piston 11, bolt 12, nut 13, upper snap ring 14 and lower snap ring 15.
[0015] Wherein stage clip 2, steel ball 3, top ring 10, bolt 12, nut 13 are installed in piston rod 8, and upper snap ring 14 and lower ...
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The invention provides an aircraft cabin door actuator cylinder with an internal lock mechanism. The aircraft cabin door actuator cylinder comprises a steel ball (3), an upper clamping ring (14), a lower clamping ring (15), a piston (11) and matched parts. The steel ball (3) is located in the middle of the piston (11), and the upper clamping ring (14) and the lower clamping ring (15) are correspondingly arranged at the two ends of the piston (11). The steel ball (3) is pressed to retract in the radial direction through the piston (11), the piston (11) exits the inner wall of the upper clampingring (14) or the lower clamping ring (15), the upper clamping ring (14) or the lower clamping ring (15) rebounds automatically to complete unlocking, the steel ball (3) contracts under the pressure of hydraulic oil, and the piston (11) is driven by the hydraulic oil to achieve reciprocating motion of the actuator cylinder. The aircraft cabin door actuator cylinder with the internal lock mechanismis simple and reliable in structure, stable in unlocking pressure and stable in telescopic motion.
Description
technical field [0001] The invention belongs to the field of mechanical design, in particular to an aircraft door actuator with an internal lock mechanism. Background technique [0002] Aircraft landing gear with internal lock actuators are commonly used with steel ball locks, finger locks and snap ring locks. Finger locks and snap ring locks are typically used on large bore actuators. Due to the limitation of installation and use space size, the steel ball type inner lock structure is generally used for the aircraft door actuator. [0003] The steel ball actuator adopts the steel ball movement driven by the piston to achieve the purpose of locking the piston rod. The contact form between the steel ball and the point opposite to the inner wall of the actuator will easily cause the inner wall to be uneven and the friction resistance will increase significantly, which will cause the telescopic movement of the actuator. Problems such as tightness, unstable unlocking pressure,...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F15B15/14F15B15/26B64C1/14
CPCF15B15/14F15B15/261B64C1/1407
Inventor 钟小宏段新星邹衍龚良国朱裕谱赵振贵黄志军李亮亮裴华平曾祥财
Owner JIANGXI HONGDU AVIATION IND GRP