JPS60204201A - Under-floor machinery disposing structure of electric railcar - Google Patents

Abstract

PURPOSE:To prevent a magnetic flux generated from various machineries and wires from affecting an adverse influence by unitizing the machineries and disposing them along the flow of currents at the lateral center under a floor. CONSTITUTION:A high voltage machinery unit 10, a controller unit 9 and a low voltage machinery unit 8 are disposed at the lateral center of a railcar body 1 in the order of the flows of a main circuit currents from the position near a pantograph. Since the various machineries are contained in a box as a unit, magnetic fluxes generated from the various machineries can be shielded. As the mounting direction of wires 2 is longitudinal of the body 1, magnetic fluxes generated from the wires 2 can be separately from rails 6 at the maximum limit, thereby preventing signal facility from erroneously operating due to the magnetic fluxes.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an underfloor equipment arrangement structure for an electric vehicle, and more particularly to an underfloor equipment arrangement structure for an electric vehicle suitable for a vehicle equipped with a semiconductor control device. be.

[Background of the invention]

Semiconductor control devices in electric cars include thyristor caps that control the main circuit in DC electric cars, thyristor inverters as auxiliary power supplies, non-commutator motor generators, etc., and semiconductor control devices in AC electric cars that control the main circuit. This refers to the phase control device, etc. under the jurisdiction. In electric cars equipped with this semiconductor control device, the control device box and the like are often installed under the floor. therefore,
Since it is placed in a limited space under the floor, the equipment box 5 containing the control device etc. has a height of 650 to 750 sn as shown in FIG.
The equipment box 5 is placed at a position with a depth of about 700 to 800 cm, and the length of the equipment box 5 is determined depending on the size of the equipment to be stored. Therefore, as the number of equipment boxes 5 inevitably increases, the amount of exposed wires 2 that connect the equipment boxes 5 increases as the number of equipment boxes 5 increases, as described above. was. It's a house, the placement direction of 1lff @@Z is,
Since the equipment box 5 is disposed on the vehicle side, it is disposed at right angles to the rail 6. Therefore, since the distribution range of the magnetic flux generated from the electric wire 2 is expanded, there has been a drawback that it has an adverse effect on the signal equipment installed on the track.

On the other hand, in order to eliminate the above-mentioned drawbacks, a structure in which the electric wire 2 is covered with a conductor plate having an overlapping contact portion of an appropriate width is known, such as in Japanese Utility Model Publication No. 56-28802. However, in such a configuration, the conductor plate must be removed each time when performing maintenance and inspection of the equipment in the equipment box 5 or maintenance and inspection of the electric wire 2.
There were drawbacks such as very poor workability and an increase in the number of parts.

[Purpose of the invention]

An object of the present invention is to prevent malfunctions of track-side signal equipment due to magnetic flux generated from equipment and electric wires of electric cars with a simple configuration, and to improve workability in maintenance and inspection of equipment. The objective is to provide an equipment arrangement structure. .

[Summary of the Invention] The present invention shortens the electric wires between each device (and reduces the magnetic flux generated from the device and the wires) by forming a unit in the center of the width direction under the floor of various devices and arranging it along the current flow. This is characterized in that the distribution range is narrowed in the width direction of the rail.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. In the figure, a pantograph 7 is installed on the roof of a car body 1, and under the floor of the car body 1, high voltage Equipment unit 10. A control device unit 9 and a low voltage equipment unit 8 are installed. By the way, when an inverter device is used as a control device, the high voltage equipment unit 10 consists of a current circuit breaker, a disconnector, and a resistor, and the control device unit 9 includes an inverter device, a current voltage control device, a grounding switch, and an AC transformer. Flushware (A
CCT) box and power needle box, said low voltage equipment unit 8
Each consists of auxiliary earthing switches, contactors, relays, etc. By the way, as described above, by unitizing various devices and disposing them at the center in the width direction of the vehicle body 1, the high voltage device unit 10. Each electric wire sunrise part 11 of the control device unit 9 and the low voltage equipment unit 8
can be easily arranged at the center in the width direction of the vehicle body l, and the electric wire 2 can be laid in the longitudinal direction of the vehicle body l, that is, parallel to the rail 6.

According to such a configuration, since the various devices are housed in the box as a unit, the magnetic flux generated from the various devices can be shielded. Further, since the electric wire 2 is installed in the longitudinal direction of the vehicle body 1, the magnetic flux generated by the electric wire 2 can be kept away from the rail 6 to the maximum extent, and malfunction of the signal equipment due to the magnetic flux can be prevented. Furthermore, by unitizing various devices as mentioned above, exposed electric wires 2
Since the amount of installation can be reduced, the strength of the magnetic flux is reduced, and the negative influence of the magnetic flux can be further reduced. In addition, in terms of workability during maintenance and inspection, by unitizing various devices as described above, the wiring between the various devices is not covered by other sacrificial components, which improves workability. Can be done.

〔Effect of the invention〕

As described above, according to the present invention, with a simple configuration, it is possible to prevent the adverse effects of magnetic flux generated from various devices and electric wires, and to improve workability in maintenance and inspection of various devices.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view in the width direction of the vehicle body showing an underfloor equipment arrangement structure in a conventional electric vehicle, FIG. 2 is a side view of a vehicle equipped with an embodiment of the underfloor equipment arrangement structure according to the present invention, and FIG. It is a sectional view taken along the line AA in the figure.

Claims (1)

[Claims] 1. In an electric vehicle equipped with a semiconductor control device, various devices are arranged under the floor along the flow of main circuit current, and the various devices are arranged at a position away from the rails in the width direction of the vehicle body. An underfloor equipment arrangement structure for an electric car, characterized in that the various types of equipment are connected by electric wires installed at positions apart from the rails in the width direction of the car body. 2. An underfloor equipment arrangement structure for an electric vehicle according to claim 1, wherein the various equipment is divided into units according to the flow of main circuit current.