Seal performance test device of airplane landing gear buffer

A technology for aircraft landing gear and sealing performance, which is applied in the use of liquid/vacuum for liquid tightness measurement, by detecting the appearance of fluid at the leak point, etc., which can solve the difficulty of hydraulic reciprocating sealing performance parameters, poor certainty, and difficult products. Quality assessment and other issues, to speed up the test and research progress, easy to operate, and moderately good results

Active Publication Date: 2017-01-25
ZHEJIANG UNIV OF TECH
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is very difficult to accurately obtain the performance parameters of hydraulic reciprocating seals in theory, and it is also difficult to evaluate the pro

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Seal performance test device of airplane landing gear buffer
  • Seal performance test device of airplane landing gear buffer
  • Seal performance test device of airplane landing gear buffer

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Reference Figure 1 to Figure 5 , Airplane landing gear shock absorber sealing performance test device, including test bench iii, servo cylinder 1 installed on the test bench iii, piston rod 3 reciprocating under hydraulic drive, test cylinder 10, actuator cylinder 11 and In the detection mechanism 14, one end of the piston rod 3 passes through the servo cylinder 1, and a cylindrical boss 2 is provided in the middle of the piston rod 3 in the servo cylinder 1. The inner cavity of the cylinder 1 is divided into a left cavity and a right cavity. The ends of the left cavity and the right cavity are respectively provided with a first driving oil source inlet and outlet 4 and a second driving oil source inlet and outlet 5;

[0023] One end of the piston rod 3 is connected to the actuator cylinder 11 through a spherical joint 7. The actuator cylinder 11 reciprocates with the piston rod 3; the outside of the actuator cylinder 11 is installed The test cylinder 10 is provided with...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The sealing performance test device of the aircraft landing gear buffer comprises a servo cylinder mounted on the test stand, a piston rod for reciprocating motion under the hydraulic drive, a test cylinder, a actuator and a detection mechanism; one end of the piston rod passes through the servo cylinder; a cylindrical boss is arranged in the middle of the piston rod located in the servo cylinder. The cylindrical boss divides the inner cavity of the servo cylinder into a left cavity and a right cavity, and the ends of the left cavity and the right cavity are respectively provided with a first drive oil source inlet and a second drive oil source inlet; one end of the piston rod is connected with the actuator through a spherical joint; the first groove of the inner cylinder surface of the test cylinder is provided with a first groove, and the first groove is provided with actuator; there is a gap between the first groove and the outer wall of the actuator; the gap between the first groove and the outer wall of the actuator forms a hydraulic oil chamber; each side of the hydraulic oil chamber is provided with a hydraulic oil inlet and a circulating oil return port respectively; one end of actuator that is far away from the piston is connected to the detection mechanism, and a displacement sensor is installed at the end of the detection mechanism.

Description

technical field [0001] The invention relates to a sealing performance test device for an aircraft landing gear buffer, and belongs to the technical field of design and development of high-performance seals and sealing performance test devices. Background technique [0002] The buffer is a key part of the landing gear, and the design of its sealing device plays an important role in the performance of the buffer and the safety and attendance of the aircraft. Therefore, when designing the buffers of modern aircraft, especially the landing gear of civil aircraft, wear resistance, long life and reliable sealing performance in the intended use environment are taken as the main design goals of the seal. The leakage problem in the research is one of the cores of the research. The buffer seal is an axial end face sealing device that relies on the elastic element to preload the end faces of the moving ring and the static ring or the medium pressure and the elastic element to press to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01M3/04
Inventor 毛剑峰
Owner ZHEJIANG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap