JPS6033684Y2 - Support device for hanger guide cables for overhead power cable extensions - Google Patents

Description

[Detailed description of the invention] The present invention relates to a support device suitable for the extension of electric wires, especially for prefabricated electric wires, and more specifically, to a support device for guide cables that are stretched over supporting objects such as steel towers in order to run hangers on which electric wires are attached. It is something.

Various techniques have been proposed for the construction of overhead power lines, including cutting the wires to fit the span of the support to be erected, equipping both ends with tension clamps and other restraining parts as necessary, and prefabricating the wires. Electrical wires made of aluminum are also widely used because they can improve uniformity of quality, construction efficiency, and safety.

Methods for constructing such prefabricated wires include installing a pulley on a support and placing the prefabricated wire on it to extend the wire, or stretching a guide rope across the support and using a hanger with the prefabricated wire attached to the guide rope. A typical method is known to extend the line by running it along the line.

As an improved construction method of this latter construction method, the inventor of the present application proposed the first
As shown in the figure, supports IA stand upright at predetermined intervals,
IB, IC arms 2A, 2B, 2C each span 3AB, 38
Two guide cables 4a, 4 extending in parallel throughout C
b is fixedly attached to the ground, both ends of which are fixed to the ground, and the endless tow cables pass through the middle of each of the two guide cables 4at4b, which are erected and supported under tension at both ends of the arms 2A, 2B, and 2C. 5 is arranged, the wire extension hanger 6 is placed on the guide ropes 4a and 4b, both ends of the prefabricated electric wire 7 are held down, and the tow rope 5 is connected.The tow rope 5 is pulled by the drive device 8 and the wire extension hanger A technique was developed for extending the prefabricated electric wire 7 to each span 3AB, 38C by running the prefabricated electric wire 7 along the guide cable 4at4b (see Japanese Patent Application No. 55-8708 x Japanese Patent Application Laid-open No. 57-1390).

According to this construction method, there are two guide ropes 4a. 4b enables stable running of the wire extension hanger 6 and, if necessary, an auxiliary hanger disposed in the middle, and can withstand a greater weight than one using a single guide rope, so multiple wires of large prefabricated wires can be used. It is also suitable for extending lines in bulk.

The present invention provides a support device for supporting these two guide ropes on a support.

An embodiment of the present invention will be described below with reference to the drawings. The receiver having an upwardly facing illumination 11 on the upper surface of which the two guide cables 4a and 4b are partially fitted has a member 12 and 12 at the left and right inner lower ends. A gate-shaped main body 13 provided in the main body 13, an attachment part 14 to a support provided above the center of the main body 13, support frames 15, 15 extending inwardly and downwardly from the left and right lower ends of the main body 13, It has a guide ring 16 pivotally supported between the lower ends.

The receiver member 12.12 is the left and right side wall portions 13a, 1 of the main body 13.
3a, and the mounting portion 14 is provided so as to protrude inward from the main body 1.
It is formed by a hole in a reinforcing rib 13c that protrudes over the center of the side wall portions 13a, 13a and the top wall portion 13b of No. 3.

The support frame 15.15 has a pin 1 at the lower end of the member 12.12.
7.17, three guide wheels 16 are rotatably supported on a support shaft 18 that is removably installed at the lower end of the support shaft 18, and a guide member 19 is mounted between the guide wheels 16. is fixed to the support shaft 18.

The guide member 19 and the guide piece 20 protruding from the inner surfaces of the support frames 15, 15 fit into the grooves of the guide ring 16 when electric wires or other filament objects hang down, so that they do not get caught in these gaps. The guide wheel 16 is arranged in an arc shape above the guide wheel 16.

In this embodiment, wire ropes, bolt rods, etc. are inserted into the mounting portion 14 and suspended and fixed to the arms 2A, 2B, and 2C of the support to receive the two parallel guide cables 4a and 4b. Part 1
2.12 and is installed under appropriate tension.
Wire extension hanger 6 holding the electric wire 7 and fixing the tow rope 5
The electric wire 7 is extended by being placed on the guide cable 4at4b and traveling.

As shown in FIG. 4, the wire extension hanger 6 includes a main body 23 having wheels 22 and 22 on the left and right sides that rotate on the two guide ropes 4a and 4b, and a main body 23 provided on the upper center surface of the main body 23. A structure consisting of a fixing member 24 for the tow rope 5 and a mounting member 25 for the electric wire 7 provided on the lower center surface is used, and if necessary, an auxiliary hanger for suspending and supporting the electric wire 7 at a suitable intermediate position may also have a similar structure. things are used.

It should be noted that a plurality of attachment parts 14 may be provided on the main body 13 so as to be fixed to a support at a plurality of places, and the number of guide wheels 16 can be increased or decreased depending on the number of wires 7 to be extended. Alternatively, a non-removable guide ring 16 may be provided.

According to the present invention constructed as described above, a receiver member is provided on the left and right inner sides of the gate-shaped main body, so that the guide cable can be hung down by fitting the guide cable into the upward groove of the member. Not only can it be installed in the span without changing the descent or the spacing, but when the wire extension hanger is placed on these two guide cables, it can be passed through it without fear of colliding with the main body. It is possible.

In addition, since there is a guide ring at the bottom, even if the wire attached to the front and rear wire extension hangers is given an appropriate slack, or the rope attached to the wire extension work hangs down, this guide ring will catch and support it. This prevents an excessive load from being applied to the part where the wire is attached to the wire extending hanger, allowing the wire to be extended without worrying about damaging it, and furthermore, lifting the guide cable and towing cable from the ground to the support. This has the advantage that these can be placed on guide wheels and lifted together with the supporting device.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view showing an example of electric wire erection work using the support device according to the present invention, Fig. 2 is a partially cutaway front view showing an embodiment of the invention, Fig. 3 is a side sectional view, and Fig. 4 The figure is a front view of the state in which the wire extension hanger passes. 11... Groove, 12... Receiver is member, 13
...Body, 14...Mounting part, 15...
...Support frame, 16...Guide wheel.

Claims (1)

[Scope of utility model registration request] A receiver having an upwardly facing ill, 11, into which two guide cables installed parallel to each other in the span of the support are fitted, is a member 12.
．． 12 provided on the left and right sides of the main body 13, an attachment portion 14 for attaching to a support provided on the main body 13, and a support frame 15 extending downward from the left and right lower ends of the main body 13. A support device for an overhead wire hanger guide rope comprising a pivotally supported guide ring 16.