JPH0142850B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a contact wire for mobile equipment, and in particular, to a contact wire for mobile equipment, in which the parts other than the contact running portion of the collector are covered with an insulating cover, the present invention has a small capacity of about 30A, and is installed under tension. The present invention relates to the provision of an insulated trolley useful for

The applicant has already proposed a tension-laid insulation trolley. That is, as shown in FIG. 1, a conductor 3 is formed by longitudinally coating and forming a strip material 2 made of copper material around a tensile strength wire body 1 obtained by twisting steel wires together. In the direction, an insulating cover 5 is provided, which is made of PVC material and integrally extruded with an opening 4 set on the arcuate surface 3a side of the conductor 3, and the enclosed tensile strength wire body 1 is tightened to the bracket. They are connected and tensioned, and the insulating cover 5 is suspended in the middle using a hanger clamp for installation.

According to such a structure, the tensile strength can be set to be large due to the presence of the linear body 1, so it is possible to provide a long wire laying trolley with little slack (sag), and Since the strip material 2 does not need to be subjected to large tension, it can be made of any conductive material and can have any thickness and width.
Therefore, it can handle a wide range of current capacities from 60A to 300A or more.

However, the biggest drawback with this one is
When installing and using a conductor for a small capacity of 60A or less, it is difficult to obtain a suitable conductor size.

In other words, in order to prevent the band material 2 from falling off from the insulating cover 5, an extra gripping allowance is provided for the band material 2 by extending it further from the surrounding portion of the linear body 1 and separating the side edges in a V-shape. In addition, in order to ensure current collection, it is necessary to make the conductor diameter as large as possible by making the arcuate surface 3a as large as possible.

Therefore, a large amount of conductive material is inevitably used, and an insulated trolley that is too large and expensive to handle a current capacity of about 30 A is required.

On the other hand, as an insulated trolley for a small capacity of about 30A, a conductor 6 made of copper material or the like is used in the form of a strip as shown in Fig. 2, and an opening 7 is provided on one wide side 6a in the longitudinal direction of the conductor 6. A structure in which an insulating cover 8 is provided is proposed, and is well known as a small and lightweight structure.

However, with such a structure, the conductor 6 does not have a sufficient tensile strength, so especially when it is installed in a long length, the sag increases, causing twisting and meandering, which may reduce the current collection running speed. In addition, in an attempt to prevent this, a large number of hanger clamps must be attached at short intervals, resulting in disadvantages.

In such a structure, when trying to increase the tensile strength, it is necessary to make the conductor 6 large in size, and the use of an expensive material leads to disadvantages such as the disadvantages of using an inexpensive material. Moreover, although it has been considered to use ferrous metals with high tensile strength, it is possible that the rate of wear of the current collector will be significantly accelerated.
There are new problems such as the occurrence of rust, which reduces the current collecting ability.

Furthermore, in the above structure example, when the terminal is tied, the tension is charged up to the edge, so it is necessary to use a special insulator between the conductor and the bracket, and to insulate the exposed part of the conductor to ensure safety. This has the disadvantage of being a cumbersome task, increasing the size, and increasing the dead space that is not used for current collection from the bracket to the current collection part of the insulating trolley. In addition, when feeding power to a conductor, since the tension is shared by the conductor itself or the enclosed wire core at its center, the conductor is first exposed by stripping off the entire circumference of the insulating cover, and then the conductor is exposed. Attach a specially made conductive clamp to the conductor.
The current situation is that these devices are used to connect power supply lines, and require a large amount of man-hours and extra additional parts.

The present invention has been made in view of the above-mentioned current situation, and its purpose is to miniaturize the conductor, enable the use of high-quality materials, and enable it to be laid under arbitrary tension. It is an object of the present invention to provide a tension laying type insulated trolley for small capacity, which is easy to tie down and can be extremely easily supplied with power under tension laying conditions.

That is, the insulated trolley of the present invention includes a strip-shaped conductor, a tensile strength wire member supplied in parallel in the longitudinal direction of the conductor, and an opening set on one wide side of the conductor in the longitudinal direction. and an insulating cover which is integrally extruded and coated, and the tensile strength wire body is embedded and carried within the insulating cover in a state where it is on the wide side opposite to the opening side of the conductor and is insulated and separated from the conductor. The insulating cover is characterized in that grooves are recessed in the longitudinal direction of both sides closest to both side edges of the strip-shaped conductor in the insulating cover.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be explained in detail based on the drawings.

FIG. 3 shows an example of the structure of an insulated trolley according to the present invention, in which 10 is a strip-shaped conductor made of copper or copper alloy, such as cored brass, and 20 is a steel cable, zinc Metsuki steel stranded wire, hard steel wire,
Tensile strength wire bodies provided by annealed copper strands, etc.
Furthermore, 30 is an insulating cover made of hard vinyl chloride material or the like.

The tensile strength wire body 20 and the strip-shaped conductor 10 are led to an extrusion molding machine with a space between them in the longitudinal direction, and are integrally extruded and coated in the longitudinal direction to form an insulating cover 30. One wide side 1 of the conductor 10
An opening 31 is set on one side of the conductor 10, and a tensile strength wire body 20 is independently embedded in the insulating cover 30 at a predetermined position on the other wide side 12 of the conductor 10. be.

Therefore, the conductor 10 and the linear body 20 are electrically insulated from each other and are integrated through the insulating cover 30.

The insulating cover includes a strip conductor 10 at 30.
V-shaped grooves 32, 32 are continuously recessed in the longitudinal direction on both sides of the insulating cover 30 between the grooves 30, 32 and the conductor 10. The cross-sectional shape portions 33, 33 are set.

This is used to take out the conductor 10 portion from the insulating cover 30.

As can be seen from the above structural example, the tensile strength linear body 20
By continuously supplying conductor 10 and continuously extruding insulation coating, several tens of meters to 100
A tensile strength linear body 2 that can not only be manufactured as a long object of m or more, but also has appropriate flexibility.
0 and the conductor 10 as well as the appropriate flexibility of the insulating cover, it can be wound in a drum or coil shape with the opening 31 facing inward. This allows the long length to be delivered to the installation site.

Then, the brought-in rolled goods are unpacked and unwound, and are passed through a straightening device to extend the length necessary for installation, and then used for erection.

FIG. 7 shows an example of the overall installation. At both ends of the insulating trolley T, the terminals 21, 21 of the tensile strength wire body, which have been exposed by cutting and peeling off the insulating cover 30 and the conductor 10, are connected in a closed loop. The loop portions 22, 22 of the obtained linear body are wound around the tension-resistant insulators 51, 51, and the steel cables 52, 52 are wrapped around the insulators 51, 51. The bolt rods 53, 53, which are wrapped in Insulation cover 30
The intermediate suspension is then carried out.

As is clear from this installation example, since the installation tension is shared by the tensile strength linear body 20 during installation, a large tensile strength can be obtained, sagging can be significantly reduced, and the interval between the hanger clamps 56 can be set large. Since there is no need to apply tension to the conductor 10, it is possible to easily use materials such as copper, which have excellent current collection properties, and to make the conductor sufficiently compact to carry a small current. .

Furthermore, since the tensile strength wire body 20 is placed within the insulating cover and separated by a certain width from the conductor 10, there is no need to perform special insulation treatment when it is tied up, and the number of parts can be reduced and used for the tied up, leaving a dead space. can be downsized.

Furthermore, when feeding power to the conductor 10, the following excellent method can be used.

That is, as shown in FIG. 8, the conductor 10 may be exposed from the forming edges 34, 34 of the opening 31 of the insulating cover 30 at any location, for example, at one end of the insulated trolley T, which is suspended and installed at any length. Cut at right angles with a hacksaw etc. until just before reaching the surface (A
From this cut A to the end at positions along both side edges of the conductor 10, a cut is made (section B), and the chips are removed as cut chips 30', 30'.

Next, the conductor 10, which has been released from being held by the insulating cover 30 by removing the chip, is bent at right angles by taking advantage of its thin shape and pulled out downward, and the power supply line 60 is connected to this drawn-out end 10'. .

In this way, there is no need to cut out the entire circumference of the insulating cover 30 to connect the power supply line, and only the opening part that is easiest to cut out is needed, and the terminal can be set without requiring a new conductive clamp or the like. .

The formed terminal 10' can maintain sufficient electrical insulation from the tensile strength wire body 20 due to the creeping insulation of the cut end of the insulating cover 30 and the opening-side cutting/removal part 30''. The protective cover for the partial conductor 10' and the feeder line 60 that has been taken out is inserted into a two-part housing made of insulating material, including the insulating cover 30, as shown in FIG. 13, for example.
Integrate and cover with screws 62.

In particular, by providing a hole 63 in the protective cover 61 with the same width as the vertical width l of the portion from which the conductor 10 is removed, it is possible to prevent the exposed conductor 10' from passing through without being bent. Further, the present invention is particularly advantageous in that projections 64, 64 are provided for holding the conductor 10' bent inside from both sides, as shown in FIG.
Since the grooves 32, 32 are provided on both sides of the
When removing chips 30' and 30',
By cutting the opening forming edges 34, 34 at right angles, and twisting or bending the longitudinally cut forming edges with pliers, the small cross-section forming portions 34, 34 of the grooves can be easily broken. can be removed.

Therefore, in this case, the longitudinal cut (B
Since there is no need to perform the work in section 2), there is no need to worry about damaging or deforming the conductor by making deep cuts, and even an amateur can remove the chip reliably and safely.

For the insulated trolley T constructed and supplied with power in this manner, the conductive brush 72 supported on the current collecting head 71 of the current collecting device 70 mounted and supported by the mobile device is passed through the opening 31 and the wide surface 11 of the conductor 10 is connected to the insulated trolley T. According to the present invention, when the brush 72 is pushed up, the tensile strength wire is supplied parallel to the back of the conductor 10 (see FIG. 6), and the current collecting run is carried out. The tension of the shaped body 20 is sufficient to ensure the contact pressure between the conductor 10 and the brush 72.

Further, FIGS. 7 to 9 show other examples of the insulated trolley of the present invention, and in each case, a wedge-shaped retaining fitting 80 is shown.
This is what was used.

That is, the metal fitting 80 has a conical through hole 81 and a wedge 8 that is pushed into the hole 81 using a bullet.
2, the tensile strength linear body 20 of the insulated trolley T
By pulling the linear body 21 into the through hole 81, the pushed-in wedge 82 grips the linear body 21, and the linear body 21 can be freely pulled in, but cannot be pulled out, thereby being held in place.

In the case of Fig. 7, there is a large diameter protrusion 8 on the rear end of the metal fitting body.
3, and this protrusion 83 is directly engaged with the bracket 54.

On the other hand, in the case of FIGS. 8 and 9, the bolt rod 84 is connected to the rear end side of the metal fitting 80, and the bolt rod 84 is passed through the bracket 84, and the nut 85,
85 so that it can be stopped at will.

In this case, the tension can be adjusted by the degree to which the linear body 20 is pulled in and the position at which the bolt rod is stopped. In the case of FIG. 8, a hook 86 is formed on a bolt rod 85, a U-shaped metal fitting 87 is hooked onto this hook 86, and the end of this metal fitting 87 is further hooked onto a metal fitting 80. 88, and a through hole 89 is formed through a slit in this plate 88.
On the other hand, the metal fitting 87 has a flange-like protrusion 87a and a narrow part 87b at the end, and the metal fitting 87 can be pushed through the slit into the through hole 89 with the narrow part 87b. Although it can be easily attached by attaching it, it does not fall off easily, and the protrusion 87a is made to catch on the plate 88 when tension is applied.

In the case of FIG. 9, an insulating connecting body 90 is provided between the bolt rod 84 and the metal fitting 80, and this connecting body 90 has a two-part housing structure with a partition wall 91 in the center. , are combined with screws type 92.
The metal fitting 80 is attached to the plate 9 on one end of the combined wall 93.
4, and a bolt rod 84 is hooked to the other end combination wall 95 with a nut 96. In this case, the linear body 20 that has been drawn and inserted into the metal fitting 80 is provided in an independently closed state inside the partition wall 91, so that it is insulated from the bolt rod 84 and can be used safely even in humid conditions, and the insulated trolley T By inserting the end of the conductor 10 into the end recess 97 of the connecting body 90, the conductor 10 is prevented from being easily touched.

As explained above, according to the insulated trolley of the present invention, the tensile strength wire is integrally connected to the conductor for current collection by the insulating cover, without sharing the tension with the conductor used for current collection. It can be used for erection with a large tensile strength due to its body, and can be installed reliably without sagging over a wide range of installation sections.
In addition to this stable tensioning, it can be installed as a very small strip-shaped conductor made of high-quality conductive material, providing a conductor size and shape that are best suited for small capacity applications of about 30A. It was made.

Furthermore, since the tensile strength wire body does not need to be charged when the terminal is tied down, it can be carried out easily and in a small space without requiring any special insulating parts or treatment. Advantages include the fact that it can be carried out easily and with a reduced number of parts, without the need for full circumference stripping or special clamps, and in particular by partially stripping using the grooves set in the insulating cover and by bending the conductor itself. Therefore, the practical benefits as a tension-laid small-capacity insulated trolley are enormous.

[Brief explanation of drawings]

FIGS. 1A and 1B are a cross-sectional view and a side view of a conventional tension-laying type insulating trolley, and FIGS. 2A and 2B are a cross-sectional view and a side view of a conventional small-capacity insulating trolley. FIG. 3 shows an embodiment of the tension-laid type insulating trolley for small capacity according to the present invention, in which A is a cross-sectional view and B is a side view. FIG. 4 is a partially cutaway explanatory diagram showing an example of tension installation of the insulated trolley of the present invention;
FIG. 5 is a perspective view showing how the power supply terminals are formed, and FIG. 6 is a cross-sectional view showing how current is collected from the installed insulating trolley. Furthermore, FIGS. 7 to 9 are explanatory diagrams showing three other examples of how the insulated trolley of the present invention is tied, and FIG. 10 is an enlarged detailed explanatory diagram of the feed-in portion of the insulated trolley of the present invention. 10: Band-shaped conductor, 11, 12: Wide surface of conductor, 20: Tensile strength linear body, 30: Insulating cover, 3
1: opening, 32: groove.

Claims (1)

[Claims] 1 A strip-shaped conductor, a tensile strength wire body supplied in parallel in the longitudinal direction of the conductor, and an opening formed on one wide side of the conductor in the longitudinal direction, and integrally extruded and coated. and an insulating cover, wherein the tensile strength linear body is embedded and carried within the insulating cover in a state insulated and separated from the conductor on the wide side opposite to the opening side of the conductor, and the insulating cover 1. A tension-laid type small-capacity insulating trolley, characterized in that grooves are recessed in the longitudinal direction on both sides closest to both edges of a strip-like conductor.