Resistance and noise reduction type insulator and high-speed train pantograph with same

A technology for high-speed trains and insulators, applied in the direction of insulators, circuits, current collectors, etc., can solve problems such as limited noise reduction effects, and achieve the effects of stable arrangement, reduced pulsating pressure, and simple structural manufacturing process

Pending Publication Date: 2022-05-27
NANJING UNIV OF SCI & TECH
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AI-Extracted Technical Summary

Problems solved by technology

At present, some scholars reduce the resistance during train running by adding a shroud to the pantograph, and some scholars reduce the noise during operation by adding zigzag stripes to the surface of the pantograph support rod, but these methods reduce the Th...
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Method used

Due to the existence of right angles in the flow field, the bar of rectangular cross-section will produce shedding vortex at four corners, and at the right angle position of the cylinder incoming flow surface, stronger shedding vortex will be produced, and the shedding vortex in the flow field upstream will Developing towards the downstream of the flow field, the two sides of the cylinder continuously collide, and the shedding vortices flowing through each corner of the cylinder continuously generate, shed, develop and dissipate downstream of the flow field, forming a more complex flow phenomenon. Compared with the circular cross-section cylinder, the shedding vortex generated by the rectangul...
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Abstract

The invention discloses a resistance and noise reduction type insulator and a high-speed train pantograph with the same, the insulator is located at the bottom of the pantograph, and a mounting underframe of the pantograph and a train roof are assembled together; the insulator has an elliptical cylindrical cross section, a long axis facing the incoming flow direction, and a short axis perpendicular to the incoming flow direction. The pantograph insulator adopts a centered through hole design, and centered through holes are symmetrically distributed along the central axis and penetrate through the whole insulator; the pantograph mainly comprises a carbon slide plate, a pantograph corner, a support rod, an upper arm, an insulator and the like, the carbon slide plate adopts a rectangular cross section design, and four edges on two sides of a windward side and a leeward side of the rectangular cross section adopt a fillet design. According to the invention, the pulsating pressure on the surface of the pantograph can be effectively reduced, the aerodynamic resistance and noise generated by the whole pantograph are obviously reduced, the original structure of the pantograph is reserved to the greatest extent, and the related structure is simple to manufacture and easy to realize.

Application Domain

Railway transportInsulators +1

Technology Topic

PantographSlide plate +4

Image

  • Resistance and noise reduction type insulator and high-speed train pantograph with same
  • Resistance and noise reduction type insulator and high-speed train pantograph with same
  • Resistance and noise reduction type insulator and high-speed train pantograph with same

Examples

  • Experimental program(4)

Example Embodiment

[0033] Example 1
[0034] like Figure 1-4 As shown, a specific embodiment of the present invention is as follows: the ratio of the length of the long axis a to the short axis b of the elliptical cylinder section of the pantograph insulator 5 is 2, and the long axis facing the incoming flow direction is perpendicular to the incoming flow direction. for the short axis. The design width c of the central through hole is 10mm, which is symmetrically distributed along the central axis, and the through hole runs through the entire insulator 5 .

Example Embodiment

[0035] Example 2
[0036] A specific embodiment of the present invention is: the ratio of the length of the long axis a to the short axis b of the elliptical cylinder section of the pantograph insulator 5 is 2.5, the long axis facing the incoming flow direction, and the short axis perpendicular to the incoming flow direction . The design width c of the central through hole is 12.5 mm, which is symmetrically distributed along the central axis, and the through hole runs through the entire insulator 5 .

Example Embodiment

[0037] Example 3
[0038] A specific embodiment of the present invention is as follows: the ratio of the long axis a to the short axis length b of the elliptical cylinder section of the pantograph insulator 5 is 3, the long axis facing the incoming flow direction, and the short axis perpendicular to the incoming flow direction . The design width c of the central through hole is 15 mm, which is symmetrically distributed along the central axis, and the through hole runs through the entire insulator 5 .

PUM

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Description & Claims & Application Information

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