JPS6223210Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in the structure of a cable duct for leading out terminals attached to an induction electric device such as a transformer.

Generally, when connecting a line terminal to a cable in an induction electric device such as a transformer and pulling it out, the cable is stored in the cable duct and pulled up, and the tip of the cable is placed at the bottom of the cable head provided at the upper end of the cable duct. It is connected and insulated, and a line terminal lead drawn out from the induction device is connected and drawn out to the upper terminal of the cable head.

This type of conventional cable duct is shown in Figure 1 A and B.
The structure was as shown in FIGS. 2A and 2B. That is, FIG. 1A is a front view of the cable duct, B is a side view of the cable duct, FIG. 2A is a sectional view taken along line A-A in FIG. In the cross-sectional view of part B, 1 is a cable duct with side plates 1a attached to pillars 2 made of L-shaped steel installed at the four corners.
The outer surface of the pillar 2 at the opening forms a flange 2a, and the covers 3 and 3' are fixed with bolts 4. The support body 6 is fixedly supported by a support body 6 such as a container or a soundproof wall.
A cable head 7 is provided at the top of the cable duct 1, and a cable 8 housed in the cable duct 1 is connected to the bottom of the cable head 7, and the cable 8 is fixed to the inner surface of the cable duct 1 by a cable support 9. has been done. The cable duct 1 has a cover 3 divided into upper and lower parts as shown in the figure.
and 3' are provided. An intermediate flange 10 is provided at the intermediate portion in the longitudinal direction of the cable duct 1, and this intermediate flange 10 is attached to the inner surface of the approximately central portion in the longitudinal direction of the flange portion 2a with bolts 11, and is attached to the covers 3 and 3 together with the flange portion 2a. ’ form the mounting flange. This intermediate flange 10
has a structure that can be removed when storing the cable 8, and after the cable 8 is stored in the cable duct 1, the intermediate flange 10 is removed from the flange portion 2a.
and then the covers 3 and 3' are secured to the bolts 4.
It is designed to be tightened and fixed. Next, the structure for connecting and fixing the cable 8 will be explained. With the upper and lower front covers 3 and 3' of the front of the cable duct 1 and the intermediate flange 10 removed, the cable 8 is bent forward and pulled out. After processing, the cable 8 is inserted into the cable duct 1 and connected to the lower part of the cable head 7, and then the cable 8 is fixed with the cable support 9, and the intermediate flange 10 is fixed to the inner surface of the flange part 2a with bolts 11, and then the upper and The lower covers 3 and 3' are attached to the front by appropriately placed bolts 4.

In a cable duct with such a conventional structure, (a) covers 3 and 3' are installed in front of the cable duct 1;
flange part 2 for cover mounting.
a, and the number of man-hours required to manufacture the cable duct 1 is large.

(a) Since the covers 3 and 3' are fixed to the flange part 2a with bolts 4, the covers 3 and 3'
It takes a lot of man-hours to install and remove.

(c) When pulling out the cable 8 forward, it is also necessary to remove the intermediate flange 10 at the center of the cable duct.

The disadvantage was that the structure was complex and required a large number of man-hours.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and aims to provide a cable duct with a simple structure and good workability.

The present invention will be explained with reference to embodiments shown in FIGS. 3A and 3B and FIGS. 4A and 4B. 3A is a front view showing an embodiment of the present invention, FIG. 3B is a side view thereof, FIG. 4A is a sectional view taken along line XX in FIG. 3A, and FIG. A partial cross-sectional view showing details of the Y section in Figure B.
The same parts and the same working parts as in FIGS. 1 and 2 are designated by the same reference numerals. In FIGS. 3 and 4, the cable duct 12 consists of front ducts 13a, 14a and rear ducts 13b, 14b, which are formed into a gutter shape by bending a thin steel plate, and include an upper front duct 13a and a rear duct 13b. As shown in FIG. 4A, the openings of the front duct 14a and the rear duct 14b face each other to form the upper duct 13, and similarly, the openings of the lower front duct 14a and the rear duct 14b face each other to form the lower duct 14, and the upper duct 13 and the lower duct 14 form the cable duct 1.
2. and front duct 13a,1
4a are integrated with rear ducts 13b, 14b and bolts 16 via fastening members 15, respectively. Further, the rear ducts 13b and 14b are connected to a support body 6 such as a transformer or a soundproof wall by means of a support member 5.
is fixed to. A cable head 7 is provided at the top of the cable duct 12, and a cable 8 housed in the cable duct 12 is connected to the bottom of the cable head 7, and the cable 8 is fixed to the inner surface of the cable duct 12 by a cable support 9. has been done. As shown in the figure, the cable duct 12 is composed of two upper and lower cable ducts 13 and 14. If it is even longer, it may be divided into three or four parts. Further, the joint between the upper duct and the lower duct 14 is as shown in the cross-sectional view of FIG. 3B.
A frame 17 made of, for example, L-shaped steel, is attached to the lower end of 3a.
is fixed so that the upper end of the lower front duct 14a can be inserted inside the frame 17 of the upper front duct 13a. Upper rear duct 13
The joint portion between the lower duct 14b and the lower duct 14b has a similar structure.

Next, the structure for connecting and fixing the cable 8 will be explained. With the front ducts 13a and 14a removed, the cable 8 is bent forward and pulled out, and after terminal processing, the cable 8 is inserted into the cable duct 12. , after connecting the cable 8 to the lower part of the cable head 7, fix the cable 8 with the cable support 9, and attach the front duct 14a to the rear duct 14b with the fastening member 15.
It is fixed with bolts 16 through. Furthermore, the front duct 13a is fixed to the rear duct 13b with bolts 16 via fastening members 15. In addition, although the case where the cross section of the cable duct is square is explained in the figure, it is not limited to the square, but may be circular or the like. The duct used is a thin steel plate formed by bending into a U-shaped or semicircular cross section. It is best in terms of processing if the front and rear ducts have exactly the same cross section, but they may have slightly different depths.

In this way, the cable duct of the present invention is split into two halves so that the front duct can be attached and removed, and each of these ducts is divided vertically and the lower duct is inserted inside the frame provided below the upper duct. (a) There is no need for a flange, which simplifies the structure.

(b) It can be manufactured by bending a thin steel plate, reducing manufacturing man-hours.

(c) There is no need for an intermediate flange, and all you have to do is cover the front duct and secure it with the fastening member.
Installation work becomes easier.

(d) Since columns are not required and the structure is made of bent thin steel plates, the weight is reduced, and especially in the case of a circular cross section, the weight is further reduced.

A great effect can be obtained.

[Brief explanation of the drawing]

Figure 1A is a front view showing the structure of a conventional cable duct, Figure 1B is a side view showing the structure of a conventional cable duct, and Figures 2A and B are respectively similar to Figure 1A.
Figure 3A is a front view showing the structure of the cable duct of the present invention;
Figure B is a side view showing the structure of the cable duct of the present invention, Figure 4A is a sectional view taken along line X-X in Figure 3A,
FIG. 4B is a partial sectional view showing details of the Y section in FIG. 3B. 12 is a cable duct, 13a and 14a are front ducts, 13b and 14b are rear ducts, 15 is a fastening member, 16 is a bolt, and 17 is a frame.

Claims (1)

[Scope of utility model registration request] A vertical cable duct is supported by the support body via a support member and houses a cable connected to a terminal of an induction electric device in the support body, and the cable is supported approximately in the center of the cable duct. A front duct and a rear duct are provided, each of which is formed into a gutter shape with a cross section of approximately the same shape using a thin steel plate, and each of these ducts is divided into at least two parts in the vertical direction, and a lower duct is placed below the upper duct. A cable duct is constructed by providing a frame into which the front duct and the rear duct are inserted, and the openings of the front duct and the rear duct are opposed to each other, and a fastening member is provided in the opposed openings, so that the front duct and the rear duct can be freely attached and detached. A cable duct for leading out terminals, characterized by being integrated with the duct.