The installation of tunnel bolt is critical to rail safety. The following switch manufacturers introduce the characteristics of the horizontal profile of tunnel bolt.

(1) Increase the total length of a large turnout. Most of the lateral high-speed tunnel bolts use gentle curve as the guide curve, which mainly includes cubic parabola and spiral curve.

(2) The track is too high at the larger turnout guide curve. In some areas, side roads have a rail bottom or rail top, further enhancing the ride. The straight track distance of high-speed tunnel bolt is usually the same as that of interval track, which tends to decrease.

(3) The price of tunnel bolt on the turn-off of a high-speed straight road, due to the influence of the number of turn-off roads, the induction curve is mainly a circular curve, and the cross-crossing speed of the turn-off road has little change.

(4) When the turnout rate is large, the internal connection conditions of the track curve have been greatly improved, and the side gauge is consistent with the interval gauge.

(5) The sharp rail at the edge of the high-speed turnoff is a curved rail with a large radius. The plane connection between the switch rail and the basic rail is mostly tangential, and the switch rail is not wide, which reduces the impact Angle of the train when it enters the side line of the retrograde.

Well, the above is some relevant information about tunnel bolt introduced by the switch manufacturer

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