Urban rail transit switch point rail and its manufacturing process

Abstract

The invention relates to an urban rail transit switch rail and a manufacture process thereof. Switching force of the switch rail can be reduced, even fewer switches are required, purchase cost of switch equipment is lowered, a slide plate fitted to the switch rail is provided with wedged regulation spring fasteners, stability and safety of the switch rail are enhanced, and amount of daily maintenance for switches by maintainers can be reduced effectively. The urban rail transit switch rail is made of a 60D40 steel rail. The urban rail transit switch rail has the advantages that the switch rail is made of the 60D40 steel rail, switching force of the switch rail is reduced, and the slide plate convenient to fit to the switch rail is provided with the elastic fasteners with high fastening force; the 60D40 steel rail has small rail height, thin waist and narrow bottom, low horizontal and vertical inertial torque and the like, space condition is provided for the design of switches, the train shaft with the switch rail for urban rail transit is lighter than train shafts for passenger special lines, and safety is sufficient.

Description

technical field [0001] The invention relates to a sliding bed plate that can not only reduce the switching force of switch point rails, even reduce the number of switch machines, and reduce the purchase cost of switch equipment, but also can be installed in conjunction with the point rails. The utility model relates to an urban rail transit switch point rail and a manufacturing process that is stable and safe, and can effectively reduce the daily maintenance workload of maintenance personnel on the turnout, and belongs to the field of urban rail transit point rail manufacturing field. Background technique [0002] At present, among the 60kg / m steel track switches with a speed of 200 kilometers per hour and below in our country, the switch rails mainly use 60AT steel rails. In the low-speed switch, individual switch rails also use 60kg / m steel rails of the same rail type as the basic rails. 60AT steel rails Sectional structure such as figure 1 shown. Compared with 60D40 rai...

AI Technical Summary

Problems solved by technology

Compared with 60D40 rail, the parameters of 60AT rail, such as rail height, rail waist thickness, rail bottom width, and lateral moment of inertia, are larger than those of 60D40 rail. Due to its own characteristics, it restricts the advancement of turnout work and electrical work, mainly in the following two aspects: 1. The switching force of 60AT point rail is relatively large, and the lateral rigidity of 60AT rail is relatively large, so it is difficult to switch. In order to provide enough switching force and ensure the safe switching of turnouts, it is necessary to set more traction points for point rails using 60AT rails. At present, my country's electric power generally adopts the method of configuring one switch machine for one traction point. The increase in the number of point machines leads to an increase in the number of switch machines, thereby increasing the purchase cost of switch electrical equipment and the workload of daily maintenance; the second is the impact of 60AT point rails on With the installation of sliding bed fasteners, the height of the 60AT point rail is 152mm, which is 24mm different from the 60kg / m rail height of the basic rail. Point Rail Contour

[0006] The speed of the urban rail switch is generally below 160 kilometers per hour. There is no need to set the bottom slope of the rail, and there is no need to mill the top of the switch rail. Because the height of the 60AT switch rail is high, it affects the choice of fasteners for the sliding bed plate, and it is installed in conjunction with the switch rail. The sliding bed plate fastener is the same as the speed-up turnout, and the basic rail is buckled by a combination of shrapnel and pins. The buckle pressure is small, and the stability of the turnout is relatively poor, which affects the overall quality of the urban rail switch.

[0007] To sum up, the 60AT point rail increases the switching force of the turnout, and the sliding bed plate fastener matched with the point rail is limited by the installation space, which restricts the advancement of the turnout

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