JPH04238750A - Conductor for insulation trolley - Google Patents

Abstract

PURPOSE:To stabilize sliding contact between a conductor and a brush from the initial step so as to prevent generation of a noise and a signal transmission error due to a chattering phenomenon based on unstable sliding contact by surface-treating a skid to a brush contact surface of the conductor coated with an insulating sheath. CONSTITUTION:In an insulation trolley wire for feeding signal and controlling power relating to a moving electric equipment, an insulation trolley conductor 12 is coated with an insulation trolley insulating sheath, not shown in the drawing, except a sliding surface 12a which is a brush contact surface of the conductor 12. Here, the above-mentioned sliding surface 12a is surface-treated by applying, for instance, a solid lubricant, which is a skid 5, and a carbon- contained copper alloy or carbon fiber. Thus in even a condition of the new insulation trolley conductor 12 just after laying the insulation trolley wire, sliding contact with a brush is stabilized. Generation of a noise and a signal transmission error due to a chattering phenomenon, based on unstable sliding contact, is eliminated.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductor for an insulated trolley used in a self-propelled transport device, and more particularly to a conductor for an insulated trolley wire used for signals.

0002

BACKGROUND OF THE INVENTION Copper conductors are commonly used as conductors for insulated trolleys in self-propelled transport devices that have been used in the past, and molded stainless steel products such as steel plates and stainless steel plates have also been used in addition to brass and bronze. Further, a sintered copper alloy is used for the brush on the sliding side that comes into sliding contact with the insulated trolley conductor. This copper sintered alloy contains carbon, fixed lubricant, lead, etc. in addition to copper. These items are included to ensure smooth sliding between the insulated trolley conductor and the brush.
After long-term use, carbon and solid lubricant adhere to the conductor surface, allowing both to slide smoothly.

[0003] The problem in this case is that when installed in the initial state, the insulated trolley conductor and the brushes have not yet slid sufficiently, so that carbon and solid lubricant stably adhere to the conductor surface. It will take a certain period of time for this to happen. In addition, it is inevitable that cracks will occur due to the unstable sliding of the brush in this initial state.
Therefore, when used as an insulated trolley wire for signals and control of mobile electrical equipment, problems arise due to transmission errors.

[0004] Furthermore, even if an insulated trolley wire is used all the time, mobile power supply systems are susceptible to the effects of humidity, temperature, oil mist, and other factors in the surrounding environment. For this reason, it is desirable to have a stable supply of lubricant to the conductors at all times, but there is currently no effective method for cleaning or polishing the conductors during regular maintenance. I was trying to do it.

The present invention has been made in view of the above points, and provides a novel conductor for an insulated trolley in which the above-mentioned drawbacks of the prior art are eliminated and the conductor surface is always a stable brush sliding surface. The purpose is to

[0006]

[Means for Solving the Problems] The present invention provides an insulated trolley wire composed of an insulating sheath and a conductor, in which the sliding surface of the conductor, which is the brush contact surface of the conductor, is surface-treated with a lubricant. This is a conductor for an insulated trolley, which is characterized by:

The present invention also provides an insulated trolley wire composed of an insulating sheath and a conductor, in which a round or oval slipping material is partially embedded in the sliding surface of the conductor. This is a characteristic conductor for insulated trolleys.

Furthermore, the present invention provides an insulated trolley wire composed of an insulating sheath and a conductor, in which a slipping material is embedded in stripes in the longitudinal direction on the sliding surface of the conductor, which is the brush contact surface of the conductor. This is a conductor for an insulated trolley.

[0009] The present invention is characterized in that, in an insulated trolley wire composed of an insulating sheath and a conductor, a lubricant is attached in a striped manner to the long conductor of the continuous insulated trolley. This is a conductor for insulated trolleys.

0010

[Function] Since the sliding surface of the conductor for the insulated trolley is provided with a slipping material in advance, smooth sliding contact is possible from the beginning of the installation of the insulated trolley wire, and stable power supply is possible for both signal and control purposes. possible, and maintenance becomes easier.

[0011]

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. FIGS. 1 and 2 are cross-sectional views showing the structure of an example of an insulated trolley wire for the purpose of supplying signal and control power to mobile electrical equipment. That is, the conductors 1 and 2 for the insulated trolley are provided with sliding surfaces 1a and 2a, which are brush contact surfaces formed in an F-shaped cross-sectional shape, open downward,
In the one shown in FIG. 1, a T-shaped fixing portion 1b is integrally formed therein. And these insulated trolley conductors 1,
2 has its lower sliding surfaces 1a and 2a open and is covered with insulating trolley insulating sheaths 3 and 4, respectively, thereby forming an insulated trolley wire. In this invention, a solid lubricant, a slippery material made of carbon-containing copper alloy, or carbon fiber is provided on the sliding surfaces 1a and 2a of the insulated trolley conductors 1 and 2, so that the insulated trolley wire is Even in the initial state, smooth sliding contact is made between the brush and the brush of the mobile electrical device.

FIG. 3 is a cross-sectional view showing the structure of an insulated trolley conductor according to an embodiment, in which a solid lubricant, carbon-containing copper alloy, or carbon fiber is applied to the sliding surface 12a of the insulated trolley conductor 12, which has an F-shaped cross section. The brush contact surface was formed by surface treatment by coating No. 5. Therefore, power is supplied between the conductive sliding surface and the brush of the mobile electric device while the conductive sliding surface is always coated with a certain amount of lubricant and carbon. The solid lubricants mentioned above include tungsten selenide, carbon fluoride, molybdenum disulfide, tungsten sulfide, graphite, lead,
Bismuth, antimony, indium and other low melting point metals are suitable, and paraffin wax is also applicable. Further, as the above-mentioned copper alloy, phosphor bronze, brass, beryllium copper, and teryllium copper can be used.

[0013] In the above example, the case of coating as a surface treatment was explained, but other methods such as baking, pressure welding, soldering, silver brazing, etc. may also be used. Note that solid lubricants and carbon-containing copper alloys may be mixed into the conductor itself.

The insulated trolley conductor 12 thus formed has an H-shaped insulating sheath 4 in cross section as shown in FIG.
Similarly, by covering it with an insulator, it becomes an insulated trolley wire. Moreover, even if the conductor for an insulated trolley has a fixed portion 1b as shown in FIG. 1, it becomes an insulated trolley wire by providing a similar sliding surface.

Next, a second embodiment will be explained based on FIG. In this example, the sliding surface 22a of the insulated trolley conductor 22
A recess is formed in the recess, and a fixed lubricant, a sliding material 6 made of carbon-containing copper alloy, or carbon fiber that fits the recess is embedded therein in the same manner as a clad alloy to form the sliding surface 22a. The slipping material 6 is embedded in a circular or oval shape as shown in FIG. 5, or in a striped manner in the longitudinal direction of the insulated trolley conductor 22 as shown in FIG. Then, as shown in FIG. 2, the insulating sheath 4 is covered with an H-shaped joint surface to form an insulated trolley wire.

Therefore, since the sliding surface 22a of this example of the insulated trolley wire is also formed by partially embedding the lubricant 6, even in the initial state at the time of installation, the lubricant 6 is interposed and the moving electricity is Smooth sliding contact with equipment brushes can be achieved.

Next, a third embodiment will be explained based on FIG. In this example, the sliding material provided on the sliding surface of the insulated trolley conductor is attached along the longitudinal direction with an adhesive instead of being embedded. That is, a fixed lubricant, a lubricant 7 made of a carbon-containing copper alloy or carbon fiber is applied to the sliding surface 32a of the insulated trolley conductor 32 in a striped manner in the longitudinal direction as shown in FIG. It is attached using adhesive. Therefore, although the sliding material 7 is provided in a convex shape from the sliding surface 32a of the insulated trolley conductor 32, it is provided on the entire brush and sliding surface 32a of the mobile electrical equipment.
As in the above example, smooth sliding contact is possible.

[0018]

[Effects of the Invention] As explained above, the conductor for an insulated trolley of the present invention has a sliding material on the sliding surface.
Even when the insulated trolley wire is in a new state immediately after it has been laid, the sliding contact with the brush is stable, and cracking phenomenon normally occurs, causing noise, but with the insulated trolley wire using this insulated trolley conductor, the contact with the brush is stable from the initial state. Stable sliding contact is achieved. Therefore, stable signal transmission is possible on both signal lines and control lines. Furthermore, since there is a lubricant on the surface of the conductor, sliding contact is possible that is not affected by environmental conditions such as humidity and temperature. Therefore, maintenance becomes easy and the number of maintenance steps can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of the configuration of a conventional insulated trolley wire.

FIG. 2 is a sectional view showing another example of the structure of a conventional insulated trolley wire.

FIG. 3 is a sectional view showing the structure of a conductor for an insulated trolley according to an embodiment of the present invention.

FIG. 4 is a sectional view showing the structure of a conductor for an insulated trolley according to a second embodiment of the present invention.

FIG. 5 is a bottom view showing the shape of the lubricant shown in FIG. 4;

6 is a bottom view showing the shape of the lubricant shown in FIG. 4. FIG.

FIG. 7 is a sectional view showing the structure of a conductor for an insulated trolley according to a third embodiment of the present invention.

[Explanation of symbols]

1, 2, 12, 22, 32 conductor 5 for insulated trolley,
6, 7 Sliding material 3, 4 Insulating sheath for insulating trolley

Claims (4)

[Claims] 1. An insulated trolley wire comprising an insulating sheath and a conductor, characterized in that a sliding surface of the conductor, which is a brush contacting surface of the conductor, is surface-treated with a lubricant. . 2. An insulated trolley wire comprising an insulating sheath and a conductor, characterized in that a round or oval slipping material is partially embedded in the sliding surface of the conductor. Conductor for trolley. 3. An insulated trolley wire composed of an insulating sheath and a conductor, characterized in that a slipping material is embedded in stripes in the longitudinal direction on the sliding surface of the conductor, which is the brush contact surface of the conductor. conductor for insulated trolleys. 4. An insulated trolley wire comprising an insulating sheath and a conductor, characterized in that a slipping material is attached in stripes to the long conductor of the insulated trolley, which is a continuous conductor. conductor.