Symmetry crossover turnout turnout 

 Turnout is the branch of a track two or more of the track, so that rolling stock transferred by a line to another line of basic settings, usually at the station, marshalling yard, coal and other delivery routes and other large paved. With turnouts of mine, you can give full play to the line capacity, even single-track railway, the laying of turnout, the construction of the cross section is greater than the length of the train line to be off the coal mine car. 
 Commonly divided into the single turnout switch, symmetric turnout, crossover and Double Slip Switches. Identify a set of turnout of several parameters have the following table, mark the sample: (Z) DX622/5/1516 left, said the narrow gauge railway symmetric switch, gauge 600mm, 22KG / M rail type, number of switch No. 5, curve radius of 15m, the second line spacing 16dm, left turnout. 

 Twenty-one series switch series 608,612,615,715,915,618,718,918,622,722,922,624,724,924,630,730,930,938,643,50,60 
 Single-switch type of open, symmetric, crossing the line, crossover, symmetric composite, diamond cross, four-track of seven types of sets of lines 
 Four gauge gauge 600,762,900,1435 
 Type 8,12,15,18,22,24,30,38,43,50,60 eleven kinds of rail track-type 
 No. 2,3,4,5,6,7,8,9,12 frog frog number nine 
 Curve radius Curve radius 4,6,9,12,15,20,25,30,40,50,70 Eleven 
 Line spacing Line spacing 1200,1300,1400,1500,1600,1700,1800,1900,2200,2500 ten 
 Ministry of Coal Industry standard design specifications of 66 types 65 types of turnouts, turnout 93 166 kinds of specifications of the factory can design all kinds of non turnout 

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