Depending on the amount of data to process, file generation may take longer.

If it takes too long to generate, you can limit the data by, for example, reducing the range of years.

Article

Download file Download BibTeX

Title

Numerical Tests of Roadheader’s Boom Vibrations

Authors

Year of publication

2014

Published in

Vibrations in Physical Systems

Journal year: 2014 | Journal volume: vol. 26

Article type

scientific article

Publication language

english

Keywords
EN
  • roadheader
  • boom
  • dynamic model
  • dynamic loads
  • vibrations
Abstract

EN The work presents a dynamic model of a telescopic boom of a roadheader. The boom represents a load–carrying structure of cutting heads and of their drive system. Together with the cutting heads’ drive, it represents a cutting system of a roadheader performing the roadheader’s basic function, that is cutting the heading face. A physical model with a discrete structure was created for the purpose of analysing the vibrations accompanying the operation of a roadheader. Due to the design of the telescopic boom, three vibrating masses are distinguished in this model concentrated in the centre of gravity of rigid bodies representing: the fixed part of the boom, the extendable part (telescope) and a reduction gear (with transverse cutting heads mounted in the output shaft journals) fitted to the extendable part of the boom. It is a spatial model with 18 degrees of free-dom. The mathematical model established was used in simulation tests the aim of which was to identify the value and sources of vibrations in the selected structural nodes of the boom during the performance of a working process. The excitation of vibrations is an effect of a computer simulation of the rock cutting process with transverse heads with the set stereometry. The article presents selected results of numerical tests using the established dynamic model.

Pages (from - to)

65 - 72

URL

https://vibsys.put.poznan.pl/_journal/2014-26/articles/vibsys_2014-ch07.pdf

License type

CC BY (attribution alone)

Full text of article

Download file

Access level to full text

public

Ministry points / journal

5

This website uses cookies to remember the authenticated session of the user. For more information, read about Cookies and Privacy Policy.