JPS6050606B2 - How to lay an insulated trolley wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an excellent method for laying an insulated trolley wire in which a molded conductor is covered with an insulating cover having a substantially U-shaped cross section.

Insulated trolley wires are attracting attention as a safe alternative to conventional bare trolley wires for applications such as mobile power supply lines for hoists, cranes, etc. When installing the insulated trolley wire, a bracket is attached to a running L-beam garter of a structure such as a hoist or an overhead crane, and a hanger is attached to this bracket for installation. However, for outdoor cranes that do not have these structures, such as gate-type cranes, there is nothing suitable for installing brackets, so instead of this, a wire suspension system, ie, a catenary system, can be considered.

Figure 1 shows an example of catenary installation, which is a conventionally widely known method of installing overhead contact lines.
Suspend wires 2, 2, 2, etc., with a long wire at the lifting part and a short wire at the hanging part, attach a hanger 3 to the bottom of each wire, and connect the contact wire T. We are trying to install and install it.

As mentioned above, since Metsengiyawa and Ear 1 are strung in an arc shape between each span, several different types of suspension wires are required to absorb ground disturbances, but in the case of overhead contact lines, single wire suspension Since each support span was standardized, mass-producing several types of wire was not a big problem.

However, since the insulated trolley wire applied to the present invention is usually a double-wire installation of 3 to 5 wires, and its application is also applied to mobile power supply in many directions, it is necessary to suspend each insulated trolley wire. When installing using the wire method, there are many types of hanging wires, and it takes a lot of time to absorb ground disturbances.In addition, there are practical problems in terms of both economical and space factors. .

The present invention has been made based on the above circumstances, and when a plurality of insulated trolley wires are installed in a catenary, the slack can be easily absorbed, the number of work steps can be significantly reduced, and the space factor can be improved. The purpose is to provide a suitable installation method.

That is, in the case of catenary-style laying of a plurality of insulated trolley wires, the laying method according to the present invention involves stretching two messenger wires at intervals in the direction in which they are to be laid, between the posts that are established at a distance from each other. , A plurality of brackets are directly installed between these two messenger wires in the installation direction, and a hanging bolt is connected and suspended from each bracket, so that the vertical height of multiple insulated trolley wires can be adjusted by the hanging bolts. The feature is that it can be installed all at once.

The present invention will be explained below with reference to drawings, in which Fig. 2 shows a schematic diagram of the installation of an insulated trolley wire, and Figs. FIG.

10, 10, . . . are pillars such as concrete columns that are erected at an arbitrary distance in the traveling direction of the moving equipment; 11, 11 are pillars such as concrete pillars;
. . . and 13, 13, 13 . . . indicate a bracket, 14 a hanging bolt, and 15 an insulated trolley wire.

In the components forming such components, first, each support 10
, 10 . . . , and attach the two messenger wires 11 and 11 to the brackets 12 , 12 . 16 to fix each messenger wire 11, 11 to each pillar 10, 10...
...Stretch them parallel to each other.

Furthermore, between each support of the two messenger wires 11 and 11, an appropriate number of U-shaped brackets 12, 12,
12... will be horizontally bridged and placed in a cross arrangement. Furthermore, from the bottom side of each bracket 12, 12, 12, attach two hanging bolts 14, 14 to the messenger wire 1.
1, 11 slightly below with nuts 17, 17 to suspend it, and hanger mounting brackets 13, 13, 13 are attached to the lower ends of these hanging bolts 14, 14.
・A hanger 19, which suspends the insulated trolley wire 15, 15, 15 at the lower side of each bracket 13, 13, 13, . . .
19, 19 to the bolts 20, 20 installed in the hanger.
, 20 and are fixed and attached with nuts 21, each insulated trolley wire 15, 15, 15 is suspended and laid by the messenger wires 11, 11.

The insulated trolley wire is transported in advance from the manufacturing factory by drum winding or roll winding, and at the installation site, it is first run through a straightening machine to loosen the curls and pay out the required length to form the wire shape to be laid. , 19, 19, etc., attach a mounting threaded rod at the terminal via the retaining insulator 13, insert this mounting threaded rod into a bracket with a hole attached to an arbitrary support, and attach it as necessary. By tightening with a nut via a coil spring, the trolley wire is held in place and a predetermined tension is applied over the entire length of the trolley wire.

The spring is used for tension adjustment.

The insulated trolley wire 15 laid in this way has a molded conductor 22.
Since the collector sliding surface 24 is regulated to a certain level by the insulating cover 23, which has a substantially U-shaped cross section and is wrapped over the top, when providing a sliding surface facing downward, the horizontality of the trolley wire can be maintained at a good level. It is necessary to maintain the collector's current flow to ensure smooth high-speed current collection. The present invention provides the above-mentioned catenary overhead wire system,
Messenger wire 1L. , 11 to maintain the horizontality of the insulated trolley wire 15, a plurality of brackets 12, 12, .・The screwing position of the hanging bolts 14, 14 and the hanger mounting brackets 13, 13, 13, 13, 13 and the hanging bolts 14
By arbitrarily setting the screw fixing positions of , 14, the hanging width 11 of the hanging bolt of the support bracket can be maximized,
The suspension width is gradually reduced along the slack of the wires 12, 12, and the suspension width 12 is minimized at the center between the supports 10, 10, thereby absorbing the slack in each suspension bolt. When laid in the method described above, the multiphase insulated trolley wires can be collectively supported by horizontal brackets at required intervals, and a power supply line with good levelness and minimal sag can be constructed.

According to the present invention, when the distance between the messenger wires 11, 11 is relatively small and the hanging height is small, a relatively long bolt 24 is installed in the hanger 19 as shown in FIG. Attach the upper end of this bolt 24 to the lower side of the bracket 12 between the messenger wires 11 and 11 with the nut 2.
5 may be screwed to form a suspension bolt.

The rest of the configuration is the same as the previous embodiment.

The present invention also preferably provides an installation width of the insulated trolley wire and a
In relation to the spacing width of the main messenger wires, the width of the latter is made large so that a plurality of insulated trolley wires can be installed between two messenger wires, and the width of the latter is made large so that the whole has an inverted trapezoidal shape to prevent lateral vibration. It is better to aim for a stabilization period.

Additionally, the two messenger wires may be stabilized by arranging them so that the distance near the middle between each support is small. Furthermore, the brackets 12 and 13 can be of any shape such as U-shaped, L steel, flat steel, etc.
It may also be made of insulating material.

Furthermore, the hanging bolts 14, 24 can be screwed by forming taps on the bracket itself. As explained above, in the catenary installation method for overlaying multi-phase insulated trolley wires, multiple brackets are arranged crosswise around two parallel messenger wires, and the vertical height of the hanging bolts is adjusted from each bracket. Since it is freely connected and suspended, and the insulated electrical wires are installed all at once on the above bracket at this hanging bolt,
The work of absorbing slack in messenger wires and insulated trolley wires can be easily done by simply adjusting the bolt tightening, and even when multiple wires are installed, they can be adjusted all at once, greatly reducing the number of work hours.

In addition, since each hanging part can be constructed from the same parts, it can be made into a single item and inexpensive parts can be used, contributing to economy.Moreover, multiple insulated trolley wires can be installed in parallel under each bracket. It has great practical value as it has a good space factor.

．． BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an explanatory diagram showing the outline of the catenary installation for overhead contact lines, Figure 2 is an explanatory diagram showing the outline of the installation of the insulated bottom saw wire according to the present invention, and Figure 3 is the suspension of the same figure as above. FIG. 4 is a front view showing details of the hanging portion, FIG. 4 is a side view of the same as the above figure, and FIG. 5 is a side view showing another embodiment of the hanging portion according to the laying method of the present invention.

10: Strut, 11: Messenger wire, 12, 13
: Bracket, 14, 24: Hanging bolt, 15: Insulated trolley wire, 19: Hanger.

Claims (1)

[Claims] 1. When installing multiple insulated trolley wires using a catenary method, two messenger wires are stretched between the posts set up at a distance in the direction in which they should be laid, and these two messenger wires are A plurality of horizontal bridges are installed between the brackets in the installation direction, and hanging bolts are connected and suspended from each of the brackets, and a plurality of insulated trolley wires are installed at once using the hanging bolts so that the vertical height can be adjusted. How to install insulated trolley wire.