JPH0528893Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a conductor fixing tool for fixing a power distribution conductor provided inside a bus duct or the like.

(Technical background of the invention and its problems) Bus ducts are widely used in power distribution systems for low-voltage, high-current power distribution that do not use wires or cables. This bus duct can be easily expanded or modified using various units, and it has a unique feature not seen in cable wiring or metal pipe construction, such as the ability to branch freely, and is popular in factories, buildings, etc. used in

One unit of this bus duct is composed of a can, a conductor disposed inside the can, and an insulating spacer that holds the conductor on the wall of the can.

When actually laying a bus duct to construct a wiring path, multiple units are arranged vertically and the can bodies and conductors are connected to each other using bolts and nuts to form the wiring path. When forming this wiring path, first the multiple can bodies are connected and fixed, and after the can body connection work is completed, the multiple conductors are connected and fixed. To connect and fix the multiple conductors, a spanner and torque wrench are inserted through an inspection window provided in the can body, and while holding the bolt with the spanner, the nut is tightened with the torque wrench to fix the multiple conductors.

When tightening and fixing using this spanner and torque wrench, the internal space of the can body is very narrow, so
It is difficult to insert and operate both a spanner and a torque wrench through one inspection window. Therefore,
The method used was for two people to connect and fix multiple conductors using two inspection windows, one person holding the bolt with a spanner and the other tightening the nut with a torque wrench. In this way, it takes a lot of time and effort for two people to tighten and fix the bolts and nuts, and there is also a risk that a secure connection cannot be made in a short time. Furthermore, when the bus duct is installed at a high place, it is not easy to secure scaffolding for the work.

(Purpose of the invention) The invention was made with the above points in mind.
The object of the present invention is to provide a conductor fixing tool that allows one person to quickly connect and fix conductors such as a bus duct.

(Summary of the invention) The conductor fixing work tool of the present invention has a can body and a plurality of power distribution conductors housed therein, and has through holes provided in the conductors that are linearly connected to each other. When a nut is tightened and fixed to a bolt that penetrates through the can body and fixes these conductors, a bolt fixing tool having a long hole that fits into the head of the bolt and prevents its rotation; A long bolt that penetrates and supports the fixture, and a pressing nut that moves the bolt fixture by rotation on the long bolt and presses it against the conductor to removably fix the long bolt via the conductor. It is characterized by

(Embodiment of the invention) Fig. 1 shows a sectional view of a bus duct to which the conductor fixing work tool of the invention is attached.

In the figure, inside the connection part of the can body 4 is a conductor 1,
1a, 2, 2a, 3, 3a are arranged. Inspection windows 5 are provided on the upper and lower surfaces of the can body 4, and the inspection windows 5 are usually covered with a lid 6. Conductors 1 and 1a, 2 and 2a, and 3 and 3a are connected to bolts 7 and nuts 8 that pass through through holes provided respectively.
The connections are fixed respectively. These conductors 1, 1a, 2, 2a, 3, 3a are supported at the center of the can body 4 as shown in the figure by insulating spacers (not shown). Further, the conductor fixing tool of the present invention is placed between the can body 4 and the conductor 1.

FIG. 2 shows a perspective view of the conductor fixing tool of the present invention.

As shown in the figure, this tool includes a bolt fixture 9 and
It consists of a support tool 10.

The bolt fixture 9 has bolt insertion holes 11 at both ends, and a long hole 12 is provided in a portion sandwiched between the bolt insertion holes 11. This long hole 12
are conductors 1 and 1a, 2 and 2a, 3 and 3a (Figure 1)
It has a diameter that is approximately the same as the size of the head 7a of the bolt 7 that fixes the bolts 7 to each other, and has a structure that prevents the bolt 7 from rotating.

The support 10 consists of a long bolt 14 having a rubber member 13 attached to its end, and a nut 15 screwed into the long bolt 14.

The long bolt 14 of the support 10 is inserted into the bolt insertion hole 11 of the bolt fixture 9, and the nut 15 is inserted into the bolt fixture 9.
Supported by.

Now, returning to FIG. 1, the method of using the conductor fixing tool described in FIG. 2 will be explained.

To explain the conductors 1 and 1a, first, a bolt 7 is inserted into a through hole provided in the conductor 1 and 1a, and a nut 8 is screwed into this bolt 7. next,
Insert the conductor fixing work tool explained in FIG. The long hole 12 of 9 is the head 7 of the bolt 7.
Place it so that it holds a. Next, the support 10
The bolt fixing tool 9 is pressed against the conductor 1 by rotating the nut 15. As a result, the rubber member 13 of the conductor fixing work tool is brought into pressure contact with the inner wall of the can body 4, and is fixed between it and the conductor 1. In this state, even if you rotate nut 8 with a torque wrench, bolt 7
is prevented from rotating by the elongated hole 12 of the bolt fixture 9, so that it does not idle. In this way, the conductors 1 and 1a can be connected and fixed with the bolt 7 and nut 8 by one person.

Next, referring to FIG. 1, an example will be described in which another method of using the conductor fixing work tool of the present invention is implemented for the conductors 3 and 3a. In this case, the conductor fixing tool shown by the broken line in the figure is used.

First, the bolt 7 is inserted into the through hole provided in the conductors 3, 3a, and the nut 8 is screwed in. Next, the bus duct fixing tool is inserted into the can body 4 through the inspection window 5, and the rubber member 13 of the support 10 is inserted into the can body 4.
and the elongated hole 12 of the bolt fixture 9 holds the head of the bolt 7. Then, the nut 15 is rotated to press the bolt fixture 9 into contact with the conductor 3a. Next, Natsuto 8
The long bolt 14 is inserted into the bolt insertion hole 11 of the bolt fixture 9a, which has a long hole 12a large enough to allow a torque wrench to rotate freely. Next, the nut 15a is fitted into the long bolt 14 and rotated to press the bolt fixture 9a against the conductor 3. In this case, conductors 3, 3a
are sandwiched and fixed by bolt fixtures 9 and 9a. Therefore, even if the support 10 is not fixed between the can body 4 and the conductor 3a, the head 7a of the bolt 7
is securely held in the elongated hole 12 of the bolt fixture 9. Therefore, if the torque wrench is fitted into the long hole 12a of the bolt fixture 9a and the nut 8 is rotated,
The bolt 7 is prevented from rotating by the elongated hole 12 of the bolt fixture 9, so that the conductors 3 and 3a can be connected and fixed. Here, the bolt fixture 9a has a structure in which the diameter of the elongated hole 12 of the bolt fixture 9 is enlarged, and the nut 15a is the same as the nut 15.

The conductor fixing tool of the present invention is not limited to the above embodiments.

This tool can be used not only for fixing bus duct conductors, but also for fixing conductors such as phase separation busbars.

(Effects of the Invention) According to the conductor fixing work tool of the present invention, the head of the bolt for fixing the conductor can be held with a simple operation, so that one person can easily connect and fix the conductor. Furthermore, by preparing several types of supports with different lengths of long bolts and bolt holding metal fittings with different sizes of elongated holes, it is possible to use them for bus ducts of all sizes.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a bus duct equipped with a conductor fixing tool according to the present invention, and FIG. 2 is a perspective view showing an embodiment of the conductor fixing tool according to the present invention. 9... Bolt fixing tool, 10... Support tool, 11...
... Bolt insertion hole, 12 ... Long hole, 13 ... Rubber member, 14 ... Long bolt, 15 ... Nut.

Claims (1)

[Scope of utility model registration request] It has a can body and a plurality of power distribution conductors housed therein, and a nut is inserted into a bolt that passes through a through hole provided in the conductors that are linearly connected to each other and fixes these conductors. In the case of tightening and fixing, a bolt fixture having a long hole into which the head of the bolt is fitted and prevents its rotation; a long bolt disposed in the can body that penetrates and supports the bolt fixture; and a bolt on the long bolt. A tool for fixing a conductor, comprising a pressing nut that moves and presses the bolt fixing tool against the conductor by rotation of the bolt, and removably fixes the long bolt via the conductor.