JPH0764234B2 - Multi-wire insulated trolley - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a multi-wire insulating trolley, and in particular, a tensile strength wire integrally formed with an insulator bears the tension of the insulating trolley. Wire insulation trolley.

[Conventional technology]

As a conventional multi-wire insulating trolley, there is one shown in FIG. 3, for example. This is a multi-wire insulating trolley arranged vertically, and the flat conductor 6 has a flat surface 6a.
Are exposed and are covered with the insulator 2 and arranged side by side, and are integrally formed. Reference numeral 3 is a collector brush, and 4 is a holder thereof, and an opening 2a of the insulator 2 is provided so as to face the collector brush 3. A rectangular copper strip or steel strip is used for the conductor 6, but there are various conductor shapes depending on the system. As is clear from the drawing, the flat surface 6a of the conductor 6 can be collected by the collector brush 3 moving.

In addition, as a conventional multi-wire insulation trolley,
Japanese Patent No. 936 (Japanese Patent Laid-Open No. 58-43105) and Japanese Patent Laid-Open No. 61-1929
There is one shown in Japanese Patent No. 34. In the former multi-wire insulating trolley, for example, on the surface of the strip-shaped insulating base, for example, three power collecting guide grooves and, for example, two control collecting guide grooves are alternately arranged in parallel, Of these, a power feeding conductor is stretched on the bottom surface of each power collecting guide groove, and three power feeding rails consisting of the power collecting guide groove and the power feeding conductor are used as a strip-shaped insulating base. In addition to being integrally formed, a control power feeding conductor is stretched on the bottom surface of each control current collecting guide groove, and two control power feeding rails composed of the control current collecting guide groove and the control power feeding conductor are provided. The strip-shaped insulating base is formed by inserting a pair of tension wires in the longitudinal direction of the strip-shaped insulating base along the longitudinal direction of the strip-shaped insulating base. Each current collector is guided.

On the other hand, the latter multi-wire insulating trolley disclosed in Japanese Patent Laid-Open No. 61-192934 has a high-conductivity main conductor and a reinforcing conductor having a high tensile strength that is provided on the back surface of the main conductor. The part opposite to the current collector is exposed to be integrally molded with the dielectric strength.

[Problems to be solved by the invention]

However, according to the conventional multi-wire insulating trolley, when the exposed surface 6a of the conductor 6 as shown in FIG. 6 is flat, it is between the opening 2a of the insulator 2 and the tip of the collector brush 3. If a gap occurs in the collector brush 3, the collector brush 3 moves up and down and becomes unstable. Particularly, when the collector brush 3 moves at a high speed, there is a disadvantage that it causes a poor current collection.
In particular, if a momentary disconnection occurs on the control conductor, the control signal cannot be received. Further, in the case of horizontal installation, the opening 2a of the collector brush 3 and the insulator 2 come into contact with each other, the opening end is worn, and this abrasion powder is mixed between the conductor 6 and the collector brush 3, so that the current collection There was the inconvenience of becoming an obstacle.

In addition, in the case of the multi-wire insulating trolley disclosed in Japanese Patent Publication No. Sho 61-30936, in addition to the problem of disconnection described above, the power supply conductor for control is separated from the overhead wire, so it is deformed by pressing the current collector. Easy to do. In particular, it is a multi-wire system that combines power and control, and the spacing between the tension wires becomes wider according to the conductor width and insulator width, so the thin, small-sized control power supply conductor is deformed by the pressure of the current collector. There was an inconvenience that it became easy to receive.

Further, in the case of the multi-wire insulating trolley disclosed in Japanese Patent Laid-Open No. 61-192934, similarly, in addition to the problem of instantaneous disconnection, a reinforcing conductor is formed on the back side of each main conductor in a stacked manner. Manufacturing that prepares clad materials becomes relatively difficult,
There was an inconvenience that the cost increased.

[Means for solving problems]

Therefore, as a solution to the problem of instantaneous disconnection, a multi-wire insulation trolley shown in FIG.
The applicant himself proposed as an application filed on July 10, 62).
This is because when the exposed surface of the conductor 5 opposite to the collector brush is made to have a middle height and the tip of the collector brush (not shown) has a chevron shape, when the collector brush moves to collect current, The conductor 5 is adapted to be guided to the middle-high part. For this reason, there is no skidding or vertical movement, and good contact can be achieved to enhance the current collection effect.

In order to prevent the conductor from being deformed even when the collector brush presses the current collector, the present invention provides a multi-wire insulating trolley proposed as described above, and integrally coats the multi-wire conductors arranged in parallel. The present invention provides a multi-wire insulation trolley in which a tensile strength wire is provided in the insulation. That is, the multi-wire insulating trolley of the present invention comprises the following means.

Conductors There are power conductors and control conductors, the power conductors supply electric power to the drive motor, and the control conductors transmit control signals to the control unit. In this conductor, the portion facing the collector brush, that is, the exposed surface of the conductor is formed in the middle height or insole, and by increasing the degree of engagement with the collector brush, sideways sliding and vertical movement of the collector brush are eliminated. be able to. For this reason, abrasion with an opening of an insulator, which will be described later, instantaneous disconnection, etc. are eliminated, and good contact is achieved. The power conductor may have a flat plate shape, provided that the control conductor has the above-described shape.

Insulator The multi-conductor arranged in parallel and the tensile strength wire described later are integrally formed by coating.

Tensile strength wire A multi-wire type insulation trolley is stretched by applying tensile strength to the conductor and insulator without directly applying tension. It is coated by extruding the above-mentioned insulator on a multi-wire conductor. However, if it is a short product, it may be molded. By disposing the conductor near the tensile strength wire, it is possible to prevent the conductor from being deformed by the pressure of the collector brush, and it is possible to increase the instruction interval of the hanger that supports the multi-wire insulating trolley. It is optimum to use galvanized steel, iron wire, hard copper wire or the like for this tensile strength wire. The condition is that the control conductor is placed closer to the tensile strength line than the power conductor.

[Action]

The control conductor of the multi-wire conductor is integrally molded with an insulator so as to be arranged near the tensile strength wire, and the exposed surface of the multi-wire conductor is formed to have a middle height or a middle bottom. Therefore, the multi-wire insulating trolley can be stretched with high tension without applying tension to the control conductor or the like. Therefore, the support interval for supporting the insulating trolley can be made long, and the conductor brush described above can prevent the collector brush from sliding sideways and moving up and down.

〔Example〕

Hereinafter, the multi-wire insulating trolley of the present invention will be described in detail with reference to FIG.

FIG. 1 shows an embodiment of the present invention, in which a tensile strength wire 1 composed of a galvanized steel wire, an iron wire, a hard copper wire, etc., which bears a tension on a multi-wire insulating trolley, a tensile strength wire 1 and conductors 5, 6 It is composed of an insulator 2 covering the conductor, a collector brush for collecting current from the conductors 5 and 6, and a holder of the collector brush. The conductor 5 has an exposed surface 5a and the conductor 6 has an exposed surface 6a. Has an opening 2a.

In the above structure, the exposed surface 5a of the conductor 5 opposite to the collector brush 3 has a middle height, and the shape of the tip of the collector brush 3 in contact with this is also a middle-height chevron. Therefore, the collector brush has a large degree of engagement with the exposed surface 5a of the conductor 5, and even when the collector brush moves at high speed, side slippage and vertical movement (in the case of vertical arrangement) are eliminated, and the opening 2a is not worn. , A good current collecting state can be achieved. Further, the tensile strength wire 1 arranged along the longitudinal direction on the outermost side of the insulator 2 covering the multi-wire conductors 5 and 6 arranged in parallel enables to be stretched by high tension, and therefore is generated by pressing the collector brush. The deformation of the conductor is suppressed. Further, conventionally, there was a limit to increasing the support interval of the hanger support portion (not shown) that supports the multi-wire insulating trolley, but by applying a large tension to the tensile strength wire 1, the support interval is increased. Even if it is long, the trolley can be prevented from sagging. Accordingly, the hanger support portion can be reduced.

Further, according to the present invention, the chevron conductor 5 is used as the control conductor of the multi-wire insulating trolley, and the flat conductor 6 is also used as the power conductor, and in particular, the chevron conductor 5 is used as the tensile strength wire 1.
Even if the insulation trolley is wide with a multi-wire structure, it can be placed near the
With less deformation, more stable current collection can be performed. In particular, when there is a current collection obstacle such as a disconnection of the control conductor, the control signal is interrupted and it becomes impossible to transmit the signal to the control unit, but the present invention appropriately prevents this. On the other hand, since the power conductor can operate due to inertia even if it is slightly separated, the influence of disconnection is small. Further, since two control conductors can be transmitted and received with the spread of signal serial transmission (signal time division transmission), it is optimal to arrange two control conductors 5 near the tensile strength wire 1. Is. The center three power conductors are flat conductors, as described above, because the power conductors can be tolerated to some extent even if they are separated.

〔The invention's effect〕

As described above, according to the multi-wire insulating trolley of the present invention, the exposed surfaces of the control conductors in the power conductors and the control conductors arranged in parallel are set to middle height or insole, and the conductors arranged in parallel to each other. Since the tensile strength line along the longitudinal direction is provided in the insulator that is integrally covered with, and the tensile strength line is arranged near the control conductor, reliability is improved without instantaneous separation of the control conductor. Also, since the tensile strength wire is arranged near the control conductor, even if the insulation trolley has a wide multi-wire structure, there is little deformation against the pressure current collection of the collector brush and more stable current collection can be performed. Improved stability of rack support,
By preventing friction of the insulator, the maintenance cycle can be extended. Further, the support interval of the members supporting the insulating trolley can be made long. Therefore, the number of supporting members is reduced and the construction can be shortened.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a cross section of a multi-wire insulating trolley in one embodiment of the present invention, and FIG. 2 is a cross sectional view of an example of the multi-wire insulating trolley proposed by the present applicant. Explanatory drawing shown, third
The figure is an explanatory view showing an example of a conventional multi-wire insulating trolley in a cross-sectional view. In the reference numeral, 1 is a tensile strength wire, 2 is an insulator, 2a is an opening, 5 is a chevron-shaped conductor, 5a is an exposed surface of middle-high, 6 is a flat-shaped conductor, and 6a is a flat-shaped exposed surface.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nagase ▲ 瞞 ▼ 5-1-1 Hidaka-cho, Hitachi-shi, Ibaraki Hitachi Cable Co., Ltd. Hidaka factory (56) Reference JP-A-58-43105 (JP , A) JP 57-175436 (JP, A) JP 57-10895 (JP, B2)

Claims (1)

[Claims] 1. A multi-wire insulating trolley in which a plurality of conductors arranged in parallel are exposed integrally with a collector brush, and are integrally molded with an insulator. A control conductor having a middle height or an insole in the parallel direction, a power conductor having a cross section of a portion opposed to the collector brush in the parallel direction, and the control or power conductor An integrally molded insulator, and a multi-wire type provided on the insulator, and a tensile strength wire that is disposed closer to the control conductor than the power conductor and bears the overhead wire tension. Insulating trolley.