New long line rail

A new type of rail head technology, used in tracks, roads, buildings, etc., can solve the problems of economic waste, fatigue fracture, fatigue fracture of long core rails, etc., to achieve the effect of close fit, improve structural strength, and improve section strength.
CN1587518AActive Publication Date: 2005-03-02CHINA RAILWAY BAOJI BRIDGE GRP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA RAILWAY BAOJI BRIDGE GRP
Publication Date
2005-03-02

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Abstract

The present invention relates to the switch tongue structure of railway switch long core rail, and belongs to the field of railway switch manufacture technology. The long core rail has rail head tread with end surface lagging to the end of the hold-down stage. The present invention has the advantages of improved stress condition with 45 % lowered maximum stress and less stress concentration, raised cross section strength and long service life up to 8 years.
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Description

Technical field:

[0001] The invention relates to a tip structure of a long core rail of a railway turnout, which belongs to the field of railway turnout manufacturing. Background technique:

[0002] 60kg / m rail No. 12 type I (VZ200) movable core long core rail, the tip structure of the long core rail is: the end of the rail head tread is opposite to the end of the anti-jump platform, since the long core rail starts from the width of the rail head 20mm Begin to bear force, just form the stress concentration, see attached image 3 with 4 , the phenomenon of fatigue fracture occurs during use, and its service life is less than one year. Figure 5 with 6 . After the actual measurement and theoretical analysis: the high stress of the stressed section leads to fracture, so how to solve the fatigue fracture phenomenon caused by the stress concentration of the long center rail has become one of the technical problems that the technical field wants to solve but has not solved. I...

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
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