JP2002281616A - Switchboard and method of replacing vibration-proof rubber thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switchboard for which the vibration-proof rubber can be replaced in a short time, and to provide a method of replacing it vibration- proof rubber. SOLUTION: In the switchboard where an inner frame 2 is provided through a gap 12 inside an outer frame 12 and electronic components are stored in the inner frame 2, both ends each of the first vibration-proof rubber 6 and the second vibration-proof rubber 7 are stopped with bolts to the side of the inner frame 1 and the side of the outer frame 1 each, and also the inner frame 2 can shift up and down within the outer frame 1 by mean of a jack up device, when the bolt fixing at one end each of the first vibration-proof rubber 6 and the second vibration-proof rubber 7 is released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchboard provided with a vibration isolating rubber for absorbing vibration transmitted from a transformer, and a method for replacing the vibration isolating rubber with a new one.

[0002]

2. Description of the Related Art FIG. 20 is a perspective view showing the structure of a conventional switchboard, in which a front door is not shown. An inner frame 2 is provided inside the outer frame 1 with a gap 12 interposed therebetween, and electric components (not shown) are accommodated inside the inner frame 2. First anti-vibration rubbers 3 are interposed between the four corners of the bottom surface of the inner frame 2 and the metal fittings 5 attached to the lower portion of the outer frame 1 respectively. Bracket 16 mounted on top
And a second vibration-proof rubber 4 is interposed therebetween. The electric components in the inner frame 2 are for controlling a cooler of a transformer (not shown). Since the outer frame 1 is fixed to the transformer directly or via a duct, vibration from the transformer is easily transmitted to the outer frame 1. For this purpose, a gap 12 is formed between the outer frame 1 and the inner frame 2, and the first anti-vibration rubber 3 that absorbs vertical vibration of the outer frame 1 in the gap 12, A second anti-vibration rubber 4 that absorbs vibration is interposed, so that the vibration is not transmitted to the inner frame 2. Thereby, it is possible to prevent the electric components in the inner frame 2 from being broken down or damaged by the vibration.

FIG. 21 is a view showing the first vibration isolating rubber 3 and the second vibration isolating rubber 2 shown in FIG.
FIG. 4 is a cross-sectional view illustrating a configuration of a vibration-proof rubber 4. Metal fittings 14 are embedded in both ends of a cylindrical rubber body 15, and screw holes 13 are formed in the metal fittings 14. By inserting screws (not shown) into the screw holes 13, both end surfaces of the first vibration isolating rubber 3 and the second vibration isolating rubber 4 are fixed to the inner frame 2 and the outer frame 1, respectively, as shown in FIG. Is done.

[0004]

However, the conventional switchboard as described above has a problem that it takes time to replace the first vibration-proof rubber 3. That is, FIG.
In the above, the first vibration isolating rubber 3 and the second vibration isolating rubber 4 are deteriorated with age and become hard when used for a long period of time, making it difficult to absorb vibration.
However, the second anti-vibration rubber 4 can be easily replaced simply by removing the metal fitting 16, but the first anti-vibration rubber 3 does not put the inner frame 2 together with the metal fitting 5 outside the outer frame 1. Could not be replaced. Therefore, the first
It took a lot of time to replace the anti-vibration rubber 3, and the maintenance and inspection costs were high.

An object of the present invention is to provide a switchboard capable of replacing the first vibration isolating rubber in a short time and a method of replacing the first vibration isolating rubber.

[0006]

According to the present invention, in order to achieve the above object, an inner frame is provided inside an outer frame via a gap, and electrical components are housed inside the inner frame. In the power distribution panel, a first vibration isolator that absorbs vertical vibration of the outer frame and a second rubber isolator that absorbs horizontal vibration of the outer frame are interposed in the gap. Both ends of the anti-vibration rubber and the second anti-vibration rubber are bolted to the inner frame side and the outer frame side, respectively, and one end of the first and second anti-vibration rubbers. Preferably, the inner frame can be moved up and down in the outer frame by the jack-up device when the bolting is released. Thus, when replacing the first vibration isolating rubber, the inner frame can be lifted by the jack-up device by first unbolting one end of the first vibration isolating rubber and the second vibration isolating rubber. With the inner frame raised, unbolt the other end of the first vibration isolating rubber,
The anti-vibration rubber can be taken out of the outer frame.
At that time, the new first rubber is inserted into the outer frame and the other end of the new rubber is bolted. Next, lower the inner frame with the jack-up device,
If one end of the new first vibration isolating rubber is bolted, the first vibration isolating rubber can be exchanged in a short time without once taking out the inner frame to the outside of the outer frame as in the related art.

In such a configuration, a fall prevention portion projecting from the inner frame side or the outer frame side may be formed in a gap between an upper portion of the inner frame and the outer frame. As a result, the bolts between the first rubber and the second rubber are released during the replacement of the first rubber, and when the inner frame becomes free, the inner frame falls even if the inner frame is inclined. Since the preventing portion contacts the outer frame side or the inner frame side, the inner frame can be prevented from falling down.

[0008] In this configuration, at least one end of the first vibration-isolating rubber end may be formed in a mountain shape. Accordingly, when the first vibration-isolating rubber is disposed in the gap, the angled end does not get caught even when the end comes into contact with the inner frame side or the outer frame side, and the first vibration-isolating rubber is smoothly placed in the gap. Can be inserted.

[0009] In this configuration, at least one end of the second vibration-proof rubber end may be formed in a mountain shape. Accordingly, when the second rubber is disposed in the gap, the angled end does not get caught even when it comes into contact with the inner frame side or the outer frame side, and the second rubber cushion is smoothly placed in the gap. Can be inserted.

[0010] In addition, there is provided a method of replacing the first vibration isolating rubber attached to the switchboard having the above configuration, wherein firstly, one end of the first vibration isolating rubber and the second vibration isolating rubber is unbolted. Then, the first anti-vibration rubber is replaced with a new first anti-vibration rubber while the inner frame is lifted by the jack-up device, and then the inner frame is lowered by the jack-up device. One end of the new first vibration isolation rubber may be bolted. Thus, the first anti-vibration rubber can be replaced in a short time without taking the inner frame out of the outer frame as in the related art.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. FIG. 1 is a front view showing a configuration of a switchboard according to an embodiment of the present invention, in which a front door is not shown. An inner frame 2 is provided inside the outer frame 1 with a gap 12 interposed therebetween, and electric components (not shown) are accommodated inside the inner frame 2. A first vibration isolating rubber 6 is interposed between the lower surface of the inner frame 2 and the bottom surface of the outer frame 1, and a second vibration isolating rubber 7 is provided between an upper side surface of the inner frame 2 and an upper side surface of the outer frame 1. It is interposed.

FIG. 2 is a sectional view taken along line AA of FIG. The right side of the outer frame 1 is the front, and the door 1A is illustrated. Six first rubber isolators 6 are provided on the lower surface of the inner frame 2.
It is provided in several places. A terminal 9 connected to an electric component is provided on a side surface of the inner frame 2, a lead wire 10 shown by a dotted line is drawn out of the terminal 9, and further, a lead wire 1 is provided.
The lead wire 11 bundled with 0 is drawn out to the outside of the outer frame 1 as shown by a dotted line, and this lead wire 11 is connected to a power source, a cooler of a transformer, or the like. As will be described later, since the inner frame 2 is slightly moved up and down when the first vibration isolating rubber 6 is replaced, the lead wires 11 are wired with a length having a margin in advance.

FIG. 3 is a sectional view taken along line BB of FIG. First
The inner side of the inner frame 2 is provided with bolts 20 at the center side of the vibration isolation rubber 6.
The four corners of the first vibration isolating rubber 6 are screwed through the outer frame 1 side with bolts 17. 4 is a cross-sectional view taken along line CC of FIG. 3, and FIG. 5 is a cross-sectional view taken along line DD of FIG. The upper part of the first vibration isolating rubber 6 is formed in a mountain shape and fixed to the inner frame 2, and the four corners of the first vibration isolating rubber 6 are fixed to the outer frame 1 side with bolts 17 and nuts 17 </ b> A. The bolt 19 which is a jack-up device has the nut 19A and the inner frame 2
Fixed to. At the bottom of the bolt 19 is a bolt receiver 1
9B are arranged facing each other and fixed to the outer frame 1 side.

FIGS. 6A and 6B show the structure of the first vibration isolating rubber 6 of FIG. 1, wherein FIG. 6A is a side view and FIG. 6B is a plan view. The first vibration-isolating rubber 6 has a shape in which an angled rubber body 6A and a plate-shaped rubber body 6B are joined, and a cylindrical metal fitting 6 is provided at the center of the rubber body 6A.
E is embedded, and a screw hole 6C is formed in the metal fitting 6E. As shown in FIG. 5, the first vibration-proof rubber 6 is fixed to the inner frame 2 by screwing the bolt 20 into the screw hole 6C via the inner frame 2. In addition, the rubber body 6B
Holes 6D are drilled at the four corners. As shown in FIG. 5, the bolt 17 is inserted into the hole 6D, penetrates the outer frame 1, and then is tightened with the nut 17A, whereby the first vibration-proof rubber 6 is fixed to the outer frame 1 side.

FIG. 7 is an enlarged view of a portion P in FIG.
FIG. 8 is a sectional view taken along line EE of FIG. 7. One end of the second anti-vibration rubber 7 on the near side is fixed to the inner frame 2 with bolts 21, and the other end of the second anti-vibration rubber 7 on the depth side is attached to the outer frame 1 with bolts 22. 1A. 9A and 9B show a configuration of the second vibration isolating rubber 7 in FIG. 1, wherein FIG. 9A is a side view and FIG. 9B is a plan view. The second anti-vibration rubber 7 has a shape in which an angled rubber body 7A and a plate-shaped rubber body 7B are joined, and a cylindrical metal fitting 7 is provided at the center of the rubber body 7A.
E is embedded, and a screw hole 7C is formed in the metal fitting 7E. As shown in FIG. 8, the second anti-vibration rubber 7 is fixed to the inner frame 2 by the bolt 21 being screwed into the screw hole 7C via the inner frame 2. In addition, the rubber body 7B
Holes 7D are formed on both sides. As shown in FIG. 8, the second anti-vibration rubber 7 is fixed to the outer frame 1 side by screwing the bolt 22 into the screw hole of the metal fitting 1A after being inserted into the hole 7D.

FIG. 10 is an enlarged view of a portion Q in FIG. In the gap 12 between the upper part of the inner frame 2 and the outer frame 1, a fall prevention part 8 projecting in a Z-shape from the inner frame 2 side is formed. Next, a method of replacing a vibration-proof rubber of a switchboard according to an embodiment of the present invention will be described. 1st anti-vibration rubber 6 of switchboard of FIG.
And the second anti-vibration rubber 7 are replaced, and the procedure numbers are given in the following according to the order of work.

FIG. 11 shows the contents of the operation of the procedure 1.
(A) is a front view of the switchboard, (B) is R of FIG. 11 (A).
It is a part enlarged view. The operator 23 removes all three bolts 21 holding the second vibration isolation rubber 7. FIG. 12 shows the procedure 2
12A is a front view of a switchboard, and FIG. 13B is a view taken in the direction of arrow A in FIG. The operator 23 removes all the six bolts 20 holding the first vibration isolation rubber 6.

FIG. 13 shows the contents of the operation of the procedure 3.
(A) is a BB cross-sectional view of FIG. 1, and (B) is (A) of FIG.
It is EE sectional drawing of. After the inner frame 2 is raised from the level indicated by the dotted line 2A by turning the bolt 19 and bringing the lower end of the bolt 19 into contact with the bolt receiver 19B, the bolt 19 is fixed with the nut 19A. In this case, the four bolts 19 are evenly turned so that the inner frame 2 is raised as horizontally as possible.

FIG. 14 shows the contents of the operation of the procedure 4, and FIG.
FIG. All the bolts 17 holding the six first vibration-isolating rubbers 6 are removed, all the first vibration-isolating rubbers 6 are taken out, and six new first vibration-isolating rubbers 6 are bolted to the outer frame 1 with the bolts 17. Attach. 15A and 15B show the work contents of the procedure 5, and FIG. 15A is a sectional view taken along the line BB of FIG.
FIG. 17B is a sectional view taken along line FF of FIG. The inner frame 2 is lowered from the level of the dotted line 2B by turning the bolt 19 in the direction opposite to that in the procedure 3. In this case, the four bolts 19 are evenly turned so that the inner frame 2 is lowered as horizontally as possible.

FIG. 16 shows the contents of the work in the procedure 6.
(A) is a front view of the switchboard, (B) is B of (A) of FIG.
It is an arrow view. An operator 23 tightens all six bolts 20 for stopping the first vibration isolation rubber 6. FIG. 17 shows the contents of the work in step 7, (A) is a front view of the switchboard, and (B) is FIG.
FIG. 7 (A) is an enlarged view of an S portion of FIG. Remove all three bolts 22 holding the second anti-vibration rubber 7.
And three new second rubber isolators 7 are attached to the outer frame 1 with bolts 22.

FIG. 18 shows the contents of the operation of the procedure 8.
(A) is a front view of a switchboard, (B) is T of FIG.
It is a part enlarged view. The second frame 7 is bolted to the inner frame 2 with bolts 21. In this step 8,
This means that the first vibration isolating rubber 6 and the second vibration isolating rubber 7 have all been replaced. Note that, in the procedure 1 of FIG. 11, the bolts 22 holding the second vibration isolation rubber 7 are not removed, and the bolts 22 are not removed.
13 may be removed so that the second anti-vibration rubber 7 is lifted together with the inner frame 2 in step 3 of FIG. Further, in the procedure 1, the second vibration isolating rubber 7 may be replaced with a new one, and the procedure 7 in FIG. 17 may be omitted.

In the procedure 2 shown in FIG.
3 does not remove the bolt 20 holding the first vibration isolating rubber 6, but removes all the bolts 17, so that the first vibration isolating rubber 6 is lifted together with the inner frame 2 in step 3 of FIG. 13. Good. FIG. 19 is an enlarged view of a portion Q in FIG. 2 when the inner frame 2 is tilted. The difference from FIG. 10 is that when the inner frame 2 is tilted, the overturn prevention portion 8 comes into contact with the outer frame 1. The frame 2 can be prevented from falling down. In the above-mentioned procedures 3 to 5 (FIGS. 13 to 15), it is necessary to work so that the inner frame 2 is horizontal, but it is safe even if the inner frame 2 is inclined.

The configuration of FIG. 10 according to the present invention is as follows.
The configuration is not limited to the configuration shown in the drawing, and
May be attached to the upper part on the outer frame 1 side, and may project from the outer frame 1 side into the gap 12. This also prevents the inner frame 2 from falling over. Further, the configuration of FIG. 4 according to the present invention is not limited to the configuration shown in the figure. Instead of the bolt 19, a commercially available jack-up device for connecting the outer frame 1 and the inner frame 2 is used as the jack-up device. It may be interposed in between.

In the configuration of FIG. 6 or FIG. 9 according to the embodiment of the present invention, one end of the first rubber 6 or the second rubber 7 is formed in a mountain shape. The shape of the first vibration isolating rubber 6 or the second vibration isolating rubber 7 is a conventional example shown in FIG.
1, it is not always necessary to form the inner frame 2 during the replacement operation of the first vibration-proof rubber 6 or the second vibration-proof rubber 7 by forming one end or both ends in a mountain shape.
Alternatively, the first vibration-proof rubber and the second vibration-proof rubber 7 can be smoothly inserted into the gaps without being caught by the outer frame 1. Thereby, the replacement time of the first vibration isolating rubber 6 or the second vibration isolating rubber 7 can be further reduced.

[0025]

As described above, according to the present invention, both ends of the first vibration isolating rubber and the second vibration isolating rubber are bolted to the inner frame side and the outer frame side, respectively. Also, when the bolting at one end of the second rubber is released, the inner frame can be moved up and down in the outer frame by the jack-up device, thereby shortening the replacement time of the first rubber. Therefore, the cost for replacing the first vibration isolation rubber can be reduced.

Further, in such a configuration, a fall prevention portion projecting from the inner frame side or the outer frame side is formed in a gap between the upper portion of the inner frame and the outer frame, so that the first vibration isolating rubber is formed. The inner frame can be prevented from falling over during the replacement work, and the work safety is improved. Further, in this configuration, at least one end of the first vibration-isolating rubber end is formed in a mountain shape, so that the replacement time of the first vibration-isolating rubber can be further reduced. Rubber replacement costs can be further reduced.

Further, in this configuration, at least one end of the second vibration-isolating rubber end is formed in a mountain shape, so that the replacement time of the second vibration-isolating rubber can be further shortened. (2) The replacement cost of the vibration isolating rubber can be further reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of a switchboard according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along line CC of FIG. 3;

FIG. 5 is a sectional view taken along line DD of FIG. 3;

6A and 6B show the configuration of the first vibration isolating rubber of FIG. 1, wherein FIG. 6A is a side view and FIG.

FIG. 7 is an enlarged view of a part P in FIG. 1;

8 is a sectional view taken along line EE of FIG. 7;

9A and 9B show the configuration of the second vibration isolation rubber of FIG. 1, wherein FIG. 9A is a side view and FIG. 9B is a plan view.

FIG. 10 is an enlarged view of a portion Q in FIG. 2;

11A and 11B show the contents of work in step 1, in which FIG. 11A is a front view of a switchboard, and FIG. 11B is an enlarged view of a portion R in FIG. 11A;

12A and 12B show the contents of work in step 2, wherein FIG. 12A is a front view of a switchboard, and FIG.

13A and 13B show the contents of the work of the procedure 3, and FIG.
FIG. 13B is a sectional view taken along line EE of FIG.

FIG. 14 is a sectional view taken along the line BB of FIG.

15A and 15B show the contents of the work in step 5, and FIG.
-B sectional view, (B) is FF sectional view of (A) of FIG.

16A and 16B show the contents of work in step 6, wherein FIG. 16A is a front view of a switchboard, and FIG.

17A and 17B show the contents of work in step 7, wherein FIG. 17A is a front view of a switchboard, and FIG. 17B is an enlarged view of a portion S in FIG.

18A and 18B show the contents of work in step 8, in which FIG. 18A is a front view of a switchboard, and FIG. 18B is an enlarged view of a portion T in FIG.

19 is an enlarged view of a portion Q in FIG. 2 when the inner frame is inclined.

FIG. 20 is a perspective view showing a configuration of a conventional switchboard.

FIG. 21 is a cross-sectional view showing the configuration of the first vibration isolating rubber and the second vibration isolating rubber of FIG.

[Explanation of symbols]

1: outer frame, 2: inner frame, 6: first anti-vibration rubber,
7: 2nd anti-vibration rubber, 8: Fall prevention part

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3J048 AA01 BA04 DA01 DA04 EA07 4E360 AB12 AB20 AB31 EA27 ED02 ED17 ED23 ED27 GA28 GA41 GA47 GA53 5G016 AA03 CB01

Claims (5)

[Claims] An inner frame provided inside the outer frame via a gap, an electric component being housed inside the inner frame, and a first vibration isolator absorbing the vertical vibration of the outer frame into the gap. In a switchboard in which rubber and a second vibration isolating rubber that absorbs horizontal vibration of the outer frame are interposed, both ends of the first vibration isolating rubber and the second vibration isolating rubber are connected to the inner end of the inner frame. The inner frame is bolted to the frame side and the outer frame side, and when the bolts at one end of the first vibration isolating rubber and the second vibration isolating rubber are released, the inner frame is jacked up by the outer frame. A switchboard that can move up and down inside. 2. The switchboard according to claim 1, wherein a fall prevention portion projecting from the inner frame side or the outer frame side is formed in a gap between an upper portion of the inner frame and the outer frame. And switchboard. 3. The switchboard according to claim 1, wherein at least one end of said first vibration-proof rubber end is formed in a mountain shape. 4. The switchboard according to claim 1, wherein at least one end of said second vibration-proof rubber end is formed in a mountain shape. 5. A method for replacing a first vibration isolating rubber attached to a switchboard according to any one of claims 1 to 4, wherein the first vibration isolating rubber and the second vibration isolating rubber are first replaced. Then, the first anti-vibration rubber is replaced with a new first anti-vibration rubber while the inner frame is lifted by the jack-up device. A method of exchanging vibration isolating rubber for a switchboard, wherein one end of the new first vibration isolating rubber is bolted with the inner frame lowered.