Testing table for fatigue strength of locomotive bogie

A locomotive bogie, fatigue strength technology, applied in the field of fatigue strength test bench, can solve problems such as inability to excite vibration, difficulty, stress amplitude rise, etc., and achieve the effect of wide vibration frequency range, easy maintenance and convenient operation

Inactive Publication Date: 2009-02-11
SOUTHWEST JIAOTONG UNIV
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this hydraulic vibration process, it is very difficult to distribute the load of each cylinder head and its changes to truly simulate the vibration of the bogie; limited by the hydraulic equipment, the excitation frequency is low, the highest frequency is only about 30Hz , unable to excite higher frequency vibrations
During the operation of the train, due to the bogie vibration caused by track irregularities, its frequency can be as high as hundreds of hertz; although the high-frequency vibration amplitude is small, the one-time damage to the bogi

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
  • Testing table for fatigue strength of locomotive bogie
  • Testing table for fatigue strength of locomotive bogie
  • Testing table for fatigue strength of locomotive bogie

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] Fig. 1-4 shows, a kind of embodiment of the present invention is: a kind of locomotive bogie fatigue strength test bench, it is made up of: the active eccentric shaft 11 on the front and rear two active eccentric wheels 1 passes through bearing 12 and Its bearing seat 13 is fixed on one side of the platform 5; the eccentric shaft 31 of the front and rear two passive eccentric wheels 3 is fixed on the other side of the platform 5 through the bearing 32 and its bearing seat 33; The active eccentric shafts 11 are respectively connected with the driving device. Figure 4 It is also shown that the driving eccentric wheel 1 and the driving eccentric shaft 11 in this example are of an integrated structure.

[0021] image 3 It is shown that the passive eccentric wheel 3 and the passive eccentric shaft 31 in this example are not integral structures, nor are they fixedly connected. Instead, the passive eccentric shaft 31 is tightly fitted on the inner ring of the differential ...

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

A fatigue strength test stand of a locomotive bogie is as follows: drive eccentric shafts of a front drive eccentric wheel and a back drive eccentric wheel are fixed on one side of the bogie through a bearing and a bearing seat; driven eccentric shafts of a front driven eccentric wheel and a back driven eccentric wheel are fixed on the other side of the bogie through a bearing and a bearing seat; the front and the back drive eccentric shafts are respectively connected with a drive device. The test stand can simulate the vertical vibration, the transverse vibration, the nodding and the compound vibration of the bogie in full range so as to truly measure the fatigue life of the bogie, thereby determine the life cycle, and providing reliable guarantee for the safe operation of the locomotive. The test stand has the advantages of simple structure and convenient operation.

Description

Technical field [0001] The invention relates to a running part of a locomotive and a bogie fatigue strength test bench. Background technique [0002] The failure of the running part of the vehicle will directly threaten the driving safety. To balance safety and efficiency, it is necessary to determine the service life of the running part and arrange a reasonable maintenance cycle. At present, there is no good solution for the overall fatigue strength test method of the bogie. Usually, the frame of the bogie is simulated and loaded with a multi-head hydraulic cylinder according to the UIC615-4 standard, that is, the dynamic force is applied to the bogie through the multi-head hydraulic cylinder. Varying loads to simulate bogie vibrations caused by track irregularities passing through wheelsets. In this hydraulic vibration process, it is very difficult to distribute the load of each cylinder head and its changes to truly simulate the vibration of the bogie; limited by the hyd...

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): G01M17/007
Inventor 史炎张红军陈康王自力
Owner SOUTHWEST JIAOTONG UNIV
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