Horizontal nib-hidden type long and short nose rail splitting method

Abstract

The invention relates to a method for splicing a horizontal tip-hidden type long point rail and a horizontal tip-hidden type short point rail. The rail body of the long point rail 1 and the rail body of the short point rail 2 are connected through a bolt; the position of the long point rail clinging to the short point rail is cut for 2 to 5 millimeters according to inner obliquity of 1:3 to 1:5; in the range of the long point rail clinging to the short point rail, the working side of a railhead of the long point rail forms a chamfer angle of 45 DEG C; a clinging side of the short point rail has outer obliquity of 1:3 to 1:5 and clings to the long point rail; and the width of the tip of the short point rail is about between 3 and 5 millimeters. The method has the following advantages: the horizontal hidden tip of the short point rail is favorable for the robustness of the short point rail structure and shortens the unsmoothness of the geometric vertical direction of the turnout on the horizontal hidden tip; at the same time, the rigidity on two sides of the long and the short point rail components tends to be consistent, which is favorable for the operation of an electrical service switching system.

Description

technical field [0001] The invention relates to a scheme for long and short center rails to be spliced, and belongs to the field of splicing methods for long and short center rails of ferrous railway turnout switches. Background technique [0002] The short center rail and the long center rail of the existing turnout adopt the tip type close contact. At the position where the long center rail and the short center rail are closely attached, there is almost no cutting on the head of the long center rail, and the cutting amount of the short center rail is relatively small at the close contact position. Large, the tip of the short core rail is relatively weak; at the same time, when the long and short core rails are converted, due to the asymmetry of the cutting of the long and short core rails, the conversion force of the turnout is quite different during the conversion process from positioning to reverse position and from reverse position to positioning . [0003] my country'...

AI Technical Summary

Problems solved by technology

By cutting short core rails, the tip-type close-fitting can be realized figure 2 : Its advantages are: the weakening of the long core rail is less, and the processing is simple; the disadvantages are: one is that the cutting amount of the close-fitting part of the short core rail is large, the tip is relatively weak, and the processing is more complicated; the other is that when the long and short core rails are converted, Due to the asymmetry of the cutting of the long and short core rails, the conversion force of the turnout is quite different during the conversion process from positioning to reverse position and from reverse position to positioning. The insufficient displacement of ~5mm caused the static gauge to be too small; fourth, the expansion joints in the side strands were weak in structure, which was not suitable for high-speed driving of the side strands; a certain number of breaks

[0004] The tip of the heart rail of the German frog is an integral structure. The front part of the heart rail is a triangular block machined from the billet of the same material as the steel rail, and the rear part is tailor-welded with long and short heart rails. The welding part is at the section width of the heart rail. The welding process more complex

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