JPS5845370B2 - How to lay an insulated trolley wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an excellent method for installing a tension-installed long insulated trolley wire for supplying power to electric mobile equipment.

Contact sliding contact wires, which are often used as a power supply method for electric equipment such as cranes and hoists, are conventionally bare trolley wires, but new methods have been developed to prevent electric shocks, reduce interphase spacing, and improve reliability. For this reason, a long insulated IJ-wire, which is covered with an insulating cover over its entire length except for the part where it contacts the brush of the current collector, has been developed and used.

When installing these trolley wires, it is essential to install brackets for attaching trolley wire support hangers at intervals of several meters along the installation path.

For hoists, overhead cranes, etc., there is no problem since the brackets can be attached to the garter of the one-beam building for traveling, but for gate type cranes and other cases where there is no structure above, it is necessary to install brackets every few meters to ensure stable installation. Trolley wire support (
It was necessary to install a large number of supports for (bracket attachment) along the running route, which caused problems in terms of economics and work, requiring a great deal of cost and time.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a method of laying an insulated trolley wire that can significantly save labor in installing a trolley wire support and achieve stable installation of an insulated trolley wire. be.

That is, in the installation method of the present invention, a plurality of poles for hanging the trolley wire are established over a long span, and the Messenger wire is stretched between each of these supports, and the Messenger wire is stretched at an arbitrary interval in the longitudinal direction of the Messenger wire. A plurality of brackets made by fixing a plurality of hangers for insulated trolley wires are suspended by a hanging wire, and one tension conductor has a cross section of approximately U.
A long insulated trolley wire formed by covering with a letter-shaped insulating cover is suspended and fixed by each of the hangers and supported, and the terminal of the trolley wire is held and pulled so that the trolley wire is laid. There is.

Further, according to the present invention, a metsenger wire is stretched between the pillars established with a long span, and both lower ends of two hanging wires suspended from the metsenger wire at arbitrary intervals are connected to both ends of the bracket. The above method can be carried out using a supporting device obtained by horizontally laying the bracket and fixing a plurality of hangers at regular intervals in the middle of the bracket.

Hereinafter, explanation will be given with reference to the drawings. FIG. 1 shows a cross section of a long insulated trolley wire applied to the present invention, in which a molded copper strip 2 is coated around a steel stranded wire 1 having tensile strength. A conductor T is obtained, and an insulating cover 3 having a substantially U-shaped cross section is covered on top of the conductor T, and a part of the molded copper strip 2 is exposed to form a sliding surface for the current collector 4 of the current collector. It is a thing,
Usually, it is prepared for installation by winding it in a drum or coil as a long length.

Figure 2 shows the insulated trolley wire installation mode obtained by the installation method of the present invention.
, 5..., and a metsenger wire 6 is stretched between these supports, and two hanging wires 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 6, 5, 6, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, and ...is suspended.

An L-shaped bracket 8 is attached to the lower end of the two hanging wires 7, 7.
, 8, 8... are connected at both ends, and by setting the length of this hanging wire arbitrarily, the brackets l-8, 8, 8... are held horizontally. will be placed.

In each bracket l-8, 8, 8..., as shown in FIG.
A plurality of mounting holes 9, 9.9 are formed at equal intervals, and hangers with bolts 10, 10.9 are formed in the mounting holes 9, 9.9.
10 inserts the bolt, and is tightened and attached by the nuts H1, 11, and 11.

A support device is constructed as described above, and the trolley wire is supported in this device.

A long insulated trolley wire transported from a production factory by drum winding or roll winding is first put on a straightening machine to loosen the curls, and then the required length is drawn out to obtain the insulated 01J-wire 12°12.12 to be laid. .

A mounting threaded rod 14 is attached to the insulated trolley wire 12. The trolley wire is held in place by tightening with a nut 17 via a response spring 16, and a predetermined tension is applied over the entire length of the trolley wire.

The spring 16 is used for tension adjustment.

The insulated troneau wires stretched under tension in this manner are attached and fixed to each of the hangers io, io, 'to, respectively, at the bottom of each bracket l-8, 8, 8... and is supported in a suspended form by the hanging wires 7,7.

When installed using the method described above, the multiphase insulated trolley wire is supported by horizontal brackets at required intervals and is installed under appropriate tension, so the trolley wire has good levelness and no slack. It is possible to configure a power supply line without any problems.

In the embodiment of FIG.
shows a mode in which two hanging wires 7゜7 are each hung from the Messenger wire, and according to this, the length of the bracket can be increased as appropriate. This type of cable can be used in multi-phase installations since it allows for an increase in the number of Toro IJ-lines.

On the other hand, according to the same conditions for the installation and the conditions for the Metsenger wire specifications, one Metsenger wire 6' is stretched as shown in FIG. ', 7' can be hung.

According to the present invention as described above, a small number of long-span support columns are provided, and a long insulated trolley wire is stretched at a predetermined tension to reduce the load on the support element. Since the support elements of the levers are laid so that they can be stably supported by the metsenger wires stretched between the pillars, the installation man-hours can be greatly reduced when a large number of brackets are attached to a structure. The economic effect is truly great, and the scope of application can be expanded when new structures are installed.

In addition, since multiple insulated trolley wires with tension applied to them are installed on brackets that are horizontally arranged in the hanging manner of Metsusenger wires, it is possible to provide a smooth sliding surface with no sagging and good levelness. It is possible to provide excellent economical and performance effects, such as enabling stable power supply.

[Brief explanation of the drawing]

FIG. 1 is an explanatory cross-sectional view showing the structure of a long insulated trolley wire that can be applied to the present invention, FIG. 2 is an explanatory view showing an example of the overhead wire mode obtained by the present invention, FIGS. 2A and 2B are explanatory views of two embodiments showing essential parts of the hanging support section in the form of the overhead wire in the same figure as above. 5: Post, 6.6': Messenger wire 7.7'
: Hanging wire 8 Nibracket, 10: Hanger with bolt 12: Insulated trolley wire.

Claims (1)

[Claims] 1. Establish a plurality of long-span support columns for hanging trolley wires, stretch a Metsenger wire between each of these columns, and install a plurality of insulated tronor wire hangers at arbitrary intervals in the longitudinal direction of the Metsenger wire. Suspend multiple brackets with a hanging wire,
On the other hand, a long insulated trolley wire consisting of a needle tension conductor covered with an insulating cover having a substantially U-shaped cross section is suspended and fixed by each of the hangers, and the terminal of the trolley wire is held and tension is applied. 1. A method for laying an insulated trolley wire, characterized in that it is laid at least once.