Railway switch
Technical field
The utility model is specifically related to a kind of railway switch.
Background technology
Stock rail 10 ' the structure of railway switch of the prior art as shown in Figure 1; Width between stock rail working edge 13 ' to the railway switch tongue of railway switch is for fixing; This stock rail is conventional width, thus become very limited at the tongue of stock rail track switch fillet 11 ' one side at the width of track switch part, thereby tongue has lower supporting capacity; In long-term use; Because the supporting capacity of tongue is low, after using certain time limit, just not meeting the carrying standard needs in time to change, and the application life of railway switch tongue is short.
The utility model content
The utility model aims to provide a kind of railway switch, and is low with the supporting capacity that solves the tongue of railway switch in the prior art, the problem that the application life of railway switch tongue is short.
To achieve these goals, the utility model provides a kind of railway switch, comprising: stock rail comprises stock rail working edge and stock rail track switch fillet; Tongue; Comprise tongue working edge and split switch fillet; Split switch fillet and stock rail track switch fillet are fitted, and in the cross section perpendicular to the stock rail bearing of trend, the stock rail working edge comprises first curved section that is positioned at the top and first straightway that is positioned at the below; Stock rail track switch fillet comprises second curved section that is positioned at the top and second straightway that is positioned at the below; Wherein, first curved section and first straightway intersect at first intersection point, and second curved section and second straightway intersect at second intersection point; Distance between first intersection point and the stock rail vertical center line in cross section is first distance; Distance between second intersection point and the stock rail vertical center line in cross section is a second distance; First distance is greater than second distance.
Further, the distance between first intersection point and the stock rail top is 16mm.
Further, the difference of first distance and the distance of second distance is 0 to 10mm.
Further, angled between the vertical center line in first straightway and the cross section.
Use the technical scheme of the utility model, railway switch comprises: stock rail and tongue; Stock rail comprises stock rail working edge and stock rail track switch fillet; Tongue comprises tongue working edge and split switch fillet; Split switch fillet and stock rail track switch fillet are fitted; In cross section perpendicular to the stock rail bearing of trend; The stock rail working edge comprises that first curved section that is positioned at the top and first straightway that is positioned at the below, stock rail track switch fillet comprise second curved section that is positioned at the top and second straightway that is positioned at the below, wherein; First curved section and first straightway intersect at first intersection point, and second curved section and second straightway intersect at second intersection point; Distance between first intersection point and the stock rail vertical center line in cross section is first distance; Distance between second intersection point and the stock rail vertical center line in cross section is a second distance; First distance is greater than second distance.
Because the stock rail working edge and the width between the tongue working edge of railway switch are normal width, its numerical value is fixed value; Therefore railway switch passes through to cut down stock rail at the inboard width of railway switch, thereby increases the width of the tongue that is connected with stock rail, to improve the supporting capacity of tongue, has prolonged the application life of railway switch tongue.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 shows the cross-sectional schematic of the stock rail of railway switch of the prior art;
Fig. 2 shows the cross-sectional schematic of embodiment of the railway switch of the utility model;
Fig. 3 shows the structural representation of stock rail of the railway switch of Fig. 2; And
Fig. 4 shows the schematic top plan view of the railway switch of Fig. 2.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
To shown in Figure 4, the railway switch of present embodiment comprises like Fig. 2: stock rail 10 and tongue 20; Stock rail 10 comprises stock rail working edge 13 and stock rail track switch fillet 11; Tongue 20 comprises tongue working edge 21 and split switch fillet 23; Split switch fillet 23 is fitted with stock rail track switch fillet 11; In cross section perpendicular to stock rail 10 bearing of trends; Stock rail working edge 13 comprises that first curved section that is positioned at the top and first straightway that is positioned at the below, stock rail track switch fillet 11 comprise second curved section that is positioned at the top and second straightway that is positioned at the below, wherein; First curved section and first straightway intersect at first intersection point, and second curved section and second straightway intersect at second intersection point; Distance between first intersection point and the stock rail 10 vertical center line in cross section is first apart from a; Distance between second intersection point and the stock rail 10 vertical center line in cross section is second distance b; First apart from a greater than second distance b.
Because the stock rail working edge 13 and the width between the tongue working edge 21 of railway switch are normal width, its numerical value is fixed value; Therefore the railway switch of present embodiment increases the width of the tongue 20 that is connected with stock rail 10 through cutting down stock rail 10 at the inboard width of railway switch, to improve the supporting capacity of tongue 20, has prolonged the application life of railway switch tongue 20.
Preferably, angled between the vertical center line in first straightway and the cross section.
As shown in Figure 3, preferably, the distance between above-mentioned first intersection point and stock rail 10 tops is h, and the numerical value of h is 16mm.
Preferably, above-mentioned first difference apart from the distance of a and above-mentioned second distance b is 0 to 10mm.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.