Abstract
The paper presents the research results of the stability and loading of the two-axle mine cars and rail tracks with various design for calculation schemes construction of transport systems of underground rail haulage. The dependences of changes in loading, stability and operation safety of rolling stocks from the parameters of irregularities, curvature radii of the rail track and the movement speed of rolling stocks at various technical solutions of the transport system, have been studied. The research results of the interaction between the two-axle mine cars and rail track with the gauge of 750 mm for underground rail haulage are presented. The parameters have been determined of the rail track irregularities in the horizontal and vertical planes, which cause the highest values of vertical and horizontal loads, acting on the rail track and the two-axle rolling stock. The recommendations are proposed for improving the study of the rail vehicles and regulatory documents development for the construction and operation of the track structure. The results can be applied for the underground rail haulage when creating the new vehicles for mines.
Highlights
The two-axle mine cars performance capability functionally depends on the rail tracks working capability
Based on the research result, the main dependency graphs have been obtained of loading, vibration, stability and safety indicators of the two-axle mine car WG-4.5-750 type movement
These curves depend on the changes in the track curvature radii, the length of vertical and transverse irregularities and their depth value, as well as on the mine car speed for various two-axle mine car calculation schemes
Summary
The two-axle mine cars performance capability functionally depends on the rail tracks working capability. The achievements analysis in the field of construction and improvement of new designs of two-axle rolling units and rail tracks [1,2,3,4,5,6] testifies that the certain changes have been made over the past decades in the rolling stock design These changes include an increase in carrying capacity and rolling stock speed by 2–3 times. Is equal to 1–3 years, instead of 6–8 years Such a state of the railway equipment design leads to an increase of operating costs, and to a violation of the work safety requirements on the rail haulage [2, 3, 6,7,8]. It is necessary to resolve inconsistency of the rail track design technical level with the new technical characteristics of the rolling stock
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