Contact rail section insulator

Abstract

The utility model relates to the field of electrified rail transit, in particular to the field of contact rails, in particular to a sectional insulation device of a contact rail, which specifically comprises a pair of insulation joints which are respectively connected with adjacent ends of two sections of adjacent contact rails, and a gap is reserved between the pair of insulation joints. The opposite ends of the pair of insulating joints are provided with joining parts which are overlapped with each other in the length direction of the contact rail, and the adjacent edges of the pair of insulating joints are provided with transition inclined planes; by adopting the technical scheme, the connecting parts on the insulating joint coincide in the length direction of the contact rail, so that the collector shoe is ensured not to be separated from the insulating joint all the time when transitioning from the disconnection part of the insulating joint, jumping at the disconnection part is avoided, and smooth transition is ensured.

Description

Technical Field

[0001] The utility model relates to the field of electrified rail transportation, in particular to the field of contact rails, and specifically to a segmented insulation device for contact rails. Background Art

[0002] In the power supply system of urban rail transit, especially in medium and low speed maglev, straddle monorail and suspended aerial train lines, the contact rail is installed on the side of the track beam or inside the beam cavity as a power supply guide rail. The contact rail in the switch area switches and shifts with the track beam to achieve the functions of mechanical coordination and electrical segmentation, and ensure that the contact rail can maintain the correct guidance and stress state when the vehicle passes through the switch. A set of switch segment insulators are generally used for transition connection.

[0003] At the electrical segmentation of the turnout, the existing technologies are all disconnected structures. One is to directly disconnect the two sections of the contact rail and use air insulation; the other is to use insulating parts to connect the two sections of the contact rail respectively, and disconnect the insulating parts. The disconnected structure will cause the collector shoe to generate impact and noise when passing through the break, aggravating its wear, so it is now necessary to design a turnout segment insulator that is friendly to the collector shoe. Utility Model Content

[0004] In order to solve the deficiencies in the prior art, a segmented insulator structure is provided to make the collector shoe transition smooth. The technical solution adopted by the utility model is:

[0005] The contact rail segment insulator comprises a pair of insulating joints respectively connected to adjacent ends of two adjacent contact rails, a gap is left between the pair of insulating joints, and connecting parts overlapping each other in the length direction of the contact rail are arranged at opposite ends of the pair of insulating joints, and transition slopes are arranged at adjacent edges of the pair of insulating joints.

[0006] Furthermore, grooves are respectively arranged on both sides of the insulating joint, and a connecting plate for connecting the contact rail is fixed in each of the grooves.

[0007] Furthermore, the insulating joint is made of non-metallic wear-resistant material.

[0008] By adopting the above technical solution, the connecting part on the insulating joint overlaps in the length direction of the contact rail, thereby ensuring that the collector shoe always remains on the insulating joint when transitioning from the disconnection point of the insulating joint, and no jumping occurs at the break, ensuring a smooth transition while meeting the requirements of line electrical segmentation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the segmented insulator;

[0010] Figure 2 This is a side view of the segmented insulator. DETAILED DESCRIPTION

[0011] like Figure 1 The segmented insulator shown in the figure comprises a pair of insulating joints 1, which are respectively connected to two adjacent ends of the two sections of the contact rail 3 at the electrical segmentation, so that the pair of insulating joints 1 are adjacent to each other, a certain gap is left between the pair of insulating joints 1 so that they do not contact each other, and a connecting portion 1-1 is provided on the adjacent side of the pair of insulating joints 1, and the pair of connecting portions 1-1 overlap each other in the length direction of the contact rail 3, which can be adopted as follows Figure 1 The form shown makes the connecting parts 1-1 in different positions in the width direction of the contact rail to achieve overlap, or the overlap is formed by a tooth-like meshing form (not shown in the figure), but it should be noted that the connecting parts 1-1 as part of the insulating joint 1 should also maintain a gap between each other. Through this structural form, when the collector shoe passes through the electrical segmentation of the contact rail, when the collector shoe transitions from one insulating joint 1 to another insulating joint 1, since the two connecting parts 1-1 overlap in the length direction of the contact rail 3, the collector shoe can cross to the other connecting part 1-1 before it leaves one of the connecting parts 1-1, thereby ensuring the smooth transition of the collector shoe at the electrical segmentation of the contact rail 3. In order to further ensure the smoothness of the collector shoe when passing through the gap position, a transition slope 1-3 is provided at the edge position of the transition of the insulating joint 1.

[0012] In order to facilitate the connection between the insulating joint 1 and the contact rail 3, Figure 2 As shown, grooves 1-2 are respectively arranged on both sides of the insulating joint 1 to form the same cross-sectional profile as the I-shaped rail of the contact rail 3, and the connecting plate 2 is embedded in the groove 1-2 and the waist of the contact rail 3 to achieve connection through bolt fastening.

[0013] In order to ensure the insulation of the insulating joint 1, the insulating joint 1 should be made of non-metallic wear-resistant materials, preferably polytetrafluoroethylene material, which not only has good insulation performance but also has the advantages of weather resistance and low friction coefficient, thereby ensuring its reliability.

Claims

1. Contact rail segment insulator, characterized by: It comprises a pair of insulating joints (1) respectively connected to adjacent ends of two adjacent contact rails, a gap being left between the pair of insulating joints (1), connecting portions (1-1) overlapping each other in the length direction of the contact rail being arranged at opposite ends of the pair of insulating joints (1), and transition slopes (1-3) being arranged at adjacent edges of the pair of insulating joints (1).

2. The contact rail segment insulator according to claim 1, characterized in that: Grooves (1-2) are respectively arranged on both sides of the insulating joint (1), and a connecting plate (2) for connecting a contact rail is fixed in each of the grooves (1-2).

3. The contact rail segment insulator according to any one of claims 1 or 2, characterized in that: The insulating joint (1) is made of non-metallic wear-resistant material.

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