Third rail insulated support of subway

Abstract

The invention discloses a third rail insulated support of a subway, comprising a base (1), an insulated bracket (2) and an insulated fastener (3), wherein the insulated bracket (2) comprises a cross beam (2.1), a vertical bearing plate (2.2) and a bearing beam (2.4); the vertical bearing plate (2.2) is fixed with the base (1); the cross beam (2.1) is fixed with the top end of the vertical bearing plate (2.2); a lower limiting bearing plate (2.3) is arranged at one end of the cross beam (2.1); the bearing beam (2.4) comprises a bearing cross beam (2.6) and a vertical connecting plate (2.7); the lower end of the vertical connecting plate (2.7) is fixed at one end of the cross beam (2.1); and one end of the bearing cross beam (2.6) extends into a channel of the insulated fastener (3) which is fixed at one end of the bearing cross beam (2.6) through a horizontal screw (4). The third rail insulated support of the subway has favorable stability and firmness and puts an end to the potential safety hazard.

Description

technical field [0001] The invention relates to the field of urban traffic, in particular to a third-rail insulating support for a subway track. Background technique [0002] At present, most urban subways adopt the third-rail power receiving method, that is, an I-beam is laid in parallel outside the two rails as the third rail (contact rail), and the subway tram receives power from the third rail through the power receiving device. [0003] The third rail is suspended in the air, and the third rail is provided with a third rail insulating support for suspending and fixing the third rail every certain distance (such as 4.5 meters). [0004] Such as figure 1 , figure 2 The shown prior art insulation support for the third subway rail includes a base 101, an insulation bracket 102 and an insulation fastener 103, the base 101 is fixed on the track foundation, and the insulation bracket 102 includes a beam 1021 and A vertical support plate 1022, the vertical support plate 102...

AI Technical Summary

Problems solved by technology

[0005] The third rail insulating support of the prior art above has the following defects: after the third rail is laid, the upper part of the third rail is accommodated in the chamber of the third rail insulating support. The form of pressure is applied on the curling and the lower limit support plate, the pressure applied on the lower limit support plate is transmitted to the base by the insulating bracket, and the direction of the pressure applied to the curling part is perpendicular to the lower inner wall of the curling, which The vertical component force is transmitted to the base by the integral insulating fastener through the insulating bracket, but there is also a horizontal component force in the pressure applied to the curling part, and the component force is transmitted from the curling edge to the supporting beam, and finally All are carried by the screw, and the horizontal component force is shear force relative to the roughly vertical screw, and the ability of the screw to bear the shear force is poor. After a period of time, the screw will loosen or loosen under the action of the horizontal component force. If it is destroyed, the fixation of the bracket to the track will fail, so the stability and firmness of the third rail insulation bracket are poor, and there are potential safety hazards

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