Switching Units for Railway Vehicles
A switch unit, railway vehicle technology, applied in electrical switches, vehicle components, high-voltage/high-current switches, etc., can solve the problems of height and width size restrictions, and achieve the effect of reducing height size, width size, and smooth action
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Embodiment 1
[0032] use Figure 1 to Figure 6 Example 1 will be described.
[0033] first, figure 1 An example of a vehicle formation of the railway vehicle 100 according to the first embodiment is shown. As shown here, the railroad vehicle 100 is comprised by the eight-car formation of 100a-100h. The roofs of these vehicles are equipped with high-voltage lead-through cables RC1, high-voltage lead-through cables RC2, high-voltage lead-through cables RC3, high-voltage lead-through cables RC4, and high-voltage lead-through cables RC5. RC5 is connected to pantograph PG1 and pantograph PG2, and receives electric power from a feeder line not shown. In addition, the cables are connected between vehicles by straight joints SJ1, SJ2, SJ3, and SJ4, and are branched below the vehicle floor by T-branch joints TJ1 and TJ2. Additionally, if passed Figure 5 As will be described later, the T-branch junction TJ1 and the straight junction SJ2 constitute an integral switch unit 70a, and the T-branch ...
Deformed example 1
[0049] use Figure 14 The switch unit 70 of Modification 1 will be described. also, Figure 14 equivalent to Image 6 X part of , which is enlarged and shown, omits repeated descriptions of equivalent structures.
[0050] In the first embodiment, the mechanical characteristics of the vicinity of the bearing 26 were described, but in this modified example, the electrical characteristics of the vicinity of the bearing 26 are described. In this modified example, a high-resistance material (non-conductive material) such as a resin material is used for the bearing 26 . Thus, between the movable conductor 5b and the bushing conductor 12, current flows only in the normal path through the flexible conductor 27, and in the abnormal path through the metal connector 24, the bearing 26, the casing 25, and the bolts that fix the casing 25 No current flows, welding between the metal connector 24 and the bearing 26 can be prevented, and smooth movement of the movable conductor 5b can be ...
Deformed example 2
[0052] use Figure 15 The switch unit 70 of Modification 2 will be described. also, Figure 15 equivalent to Figure 14 The figure shown on the right side is enlarged, and the repeated description of the equivalent structure is omitted.
[0053] In Modification 1, in order to exclude the current of the abnormal path, a high-resistance material (non-conductive material) such as a resin material is used for the bearing 26, but in this modification, a material such as a resin material is used for the fixing member of the housing 25. High resistance material (non-conductive material) to exclude the abnormal path of current flow.
[0054] Specifically, the housing 25 is fixed to the shield body 28 and the bushing conductor 12 by inserting the insulating bolt 14 mounted with the insulating washer 15 into the insulating sleeve 16 mounted on the housing 25 and tightening to the bushing conductor 12 . Accordingly, current does not flow in the abnormal path including the metal conne...
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