Buffering performance mechanism for oil needle type buffer

A shock absorber and needle-type technology, which is applied to shock absorbers, shock absorbers, mechanical equipment, etc., can solve the problems of variable buffer performance and deviation from the optimal stable state, and achieve excellent buffer performance, stable damping characteristics, and Avoid the effect of abrasion

Inactive Publication Date: 2018-06-01
AVIC GUIZHOU AIRPLANE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the central axis of the oil needle rod coincides with the central axis of the plunger, an optimal and stable oil passage ring can be obtained, but due to manufacturing errors, installation errors, and the shaking of the oil needle rod itself (when the stroke of the buffer is large or the oil needle The impact is more

Method used

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  • Buffering performance mechanism for oil needle type buffer

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Embodiment Construction

[0009] The principles and features of the present invention will be described below in conjunction with the accompanying drawings.

[0010] A mechanism for cushioning performance of an oil-needle buffer, comprising a buffer outer cylinder 1, a fork lug support 2, a joint bearing 3, a bolt connection assembly 4, a plunger 5, a piston 6, a piston rod 7, a sealing device 8, a lock Tight nut 9, oil needle rod 10; plunger 5 and joint bearing 3 are connected through a spherical surface; joint bearing 3 is connected to fork lug support 2 through bolt connection assembly 4; fork lug support 2 is connected to the outside of the buffer by thread On the cylinder 1, the plunger 5 can freely rotate around the buffer outer cylinder 1; the oil needle rod 10 is fixed at the bottom end of the inner hole of the piston rod 7 through the cooperation of the hole and the shaft. During the movement of the buffer, the oil needle rod 10 remains inside the hole of the plunger 5 .

[0011] The process ...

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Abstract

A buffering performance mechanism for an oil needle type buffer comprises a buffer outer barrel, a fork ear shaped support, a joint bearing, a bolt connecting assembly, a plunger piston, a piston, a piston rod, a sealing device, a locking nut and an oil needle rod, wherein the plunger piston is connected to the buffer outer barrel through a spherical surface of the joint bearing, the bolt connecting assembly and the fork ear shaped support; the joint bearing is connected to the fork ear shaped support through the bolt connecting assembly; the fork ear shaped support is in threaded connection with the buffer outer barrel and enables the plunger piston to freely rotate around the buffer outer barrel; the piston is arranged between the buffer outer barrel and the piston rod; the sealing device is arranged between the buffer outer barrel and the piston rod and is locked through the locking nut; the oil needle rod is positioned into a hole in the plunger piston, and one end of the oil needle rod is fixed to the bottom end of the inner hole of the piston rod. According to the mechanism, the change of an oil running ring is reduced, so that the stable and high-efficiency buffering performance is realized; and meanwhile, the abrasion caused by contract between the plunger piston and the oil needle rod is avoided, and thus the service life of the oil needle rod is prolonged.

Description

technical field [0001] The invention relates to the technical field of aircraft landing gear buffers, in particular to a buffer performance mechanism of an oil needle type buffer. Background technique [0002] The cushioning function of the oil needle buffer of the aircraft landing gear is mainly realized by the fluid resistance generated by the small annular gap formed between the fluid flowing through the plunger and the oil needle rod. When the pillar is compressed, the oil needle rod passes through the hole of the plunger to form an oil-passing ring, and the oil inside the pillar generates resistance through the oil-passing ring, consumes energy, and realizes the buffering function. The performance of the buffer mainly depends on the area and shape of the annular gap. In the buffer performance test, it is usually achieved by adjusting the shape and geometric dimensions of the oil needle rod, that is, adjusting the area and shape of the oil passage ring. [0003] In the...

Claims

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Application Information

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IPC IPC(8): F16F9/19F16F9/32
CPCF16F9/19F16F9/3207
Inventor 蒯云李延王瑞杨申袁云
Owner AVIC GUIZHOU AIRPLANE
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