Undercarriage bumper having inner flow regulating valve

A technology of throttle valve and buffer, applied in landing gear, aircraft parts, shock absorbers, etc., can solve the problems of low buffering efficiency, insufficient buffering process of buffers, and low impact energy absorbed by the throttle valve, etc. Achieve the effect of smooth buffering process, reducing oil return oil hole area, and multi-reverse stroke power.

Inactive Publication Date: 2008-11-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention: the existing spring-controlled throttle valve has the disadvantages that the cushioning process of the buffer is not smooth enough during low-speed impact, the throttle valve absorbs less impact energy and the buffering efficiency is not high during low-speed impact and rebound.

Method used

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  • Undercarriage bumper having inner flow regulating valve
  • Undercarriage bumper having inner flow regulating valve
  • Undercarriage bumper having inner flow regulating valve

Examples

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Embodiment Construction

[0014] Technical scheme of the present invention: as attached figure 1 Shown is the composition schematic diagram of the aircraft landing gear buffer of the band inner throttle valve of the present invention, figure 2 is a schematic diagram of the structure of a spring-operated throttle valve with an internal throttle valve. as attached figure 2 As shown, with the support seat 6 as the bottom, the spherical valve core 9 is supported on the support seat 6 by four disc reeds 8, and the throttle cap 11 is supported on the support seat 6 by the spring 10 at the same time, and its top The inclined surface is close to the inner opening of the oil hole of the spherical valve core 9, forming an internal throttling structure, with the throttle valve seat 7 as the cover, and the spherical surface at the top of the spherical valve core 9 is close to the inner arc surface of the oil hole of the throttle valve seat 7, forming Another throttle structure, thus forming a spring-controlle...

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PUM

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Abstract

The invention relates to a plane landing gear buffer with an internal throttle valve, wherein the buffer comprises an outer cylinder (15) and a piston rod (1) to form an external structure, a floating piston (4) in the chamber of the piston rod (1) to form an air chamber and an oil chamber, a support base (6), a throttle valve base (7), a disc spring (8) and a spherical valve element (9) to form a spring control throttle valve. The invention is characterized in that the chamber of the throttle valve comprises an internal throttle valve formed by a spring (10) and a throttle hole cap (11). The invention has improved low-speed buffer function, to avoid load sharp at low speed and make the throttle valve absorb more reverse strike energy.

Description

1. Technical field [0001] The invention belongs to an aircraft landing gear buffer. 2. Technical background [0002] The existing spring-controlled throttle valve technology at home and abroad has been widely used, and the spring-controlled throttle valve is usually used in the landing gear buffer of the aircraft to improve the landing buffer performance of the landing gear. as attached Figure three The spring-controlled throttling valve in the shown buffer is an existing structural form of the spring-controlled throttling valve. Here will use the attached Figure three The operation of the snubber is shown to illustrate the working principle of this spring-operated throttle. [0003] For attached image 3 As shown in the buffer, when the piston rod (1) is subjected to an impact load, the oil in the oil chamber (12) is pressurized and flows to the low-pressure side through the throttle valve, and pushes the floating piston (4) to compress the gas in the air chamber to rea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/34B64C25/60
Inventor 聂宏魏小辉张明
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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