JPH0614439Y2 - Anti-vibration mounting device for transformer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an anti-vibration mounting device for a power transformer.

[Prior Art] In order to prevent a large vibration from being applied to the transformer body during an earthquake or transportation of the transformer, the transformer body is attached to the installation base via a vibration isolator. Fourth
The figure shows the essential parts of a conventional vibration proof installation device for a power transformer. In the figure, 1 is a transformer body and 2 is a transformer body mounting plate. The mounting plate 2 is brought into contact with the lower surface of the bent leg portion 1A 'of the lower iron core tightening fitting 1A of the transformer body 1,
The bent leg portion 1A 'is fastened by a bolt 3 and a nut 5.

The mounting plate 2 is arranged on the horizontal plate portion 6A of the installation base 6 via a vibration isolating rubber 7A, and a washer 9 is arranged on the mounting plate 2 via a vibration isolating rubber 7B. Washer 9, anti-vibration rubber 7
B, the mounting plate 2, the anti-vibration rubber 7A, and the horizontal plate portion 6A are respectively penetrated, and holes 9a, 7b, 2a, 7 aligned with each other
a and 6a are provided. The hole 2a provided in the mounting plate 2 is formed smaller than the holes 7a and 7b provided in the vibration-proof rubbers 7A and 7B, and the sleeve 8 made of an elastic material is fitted in the hole 2a. The sleeve 8 has a length approximately equal to the thickness of the laminated body of the anti-vibration rubber 7A, the mounting plate 2 and the anti-vibration rubber 7B, and is fixed through the washer hole 9a, the inside of the sleeve 8 and the hole 6a of the installation base. A bolt 10 is provided. Then, a nut 11 is screwed onto the lower end portion of the fixing bolt 10 protruding from the installation base, and the nut is fastened to the horizontal plate portion 6A of the installation base via the spring washer 12.

The mounting plate 2, the vibration-proof rubbers 7A and 7B, the sleeve 8, the washer 9, the fixing bolt 10 and the nut 11 constitute a vibration-proof mounting device, and the vibration-proof mounting device is symmetrically arranged at at least four positions. The transformer 1 is supported with respect to the installation base 6.

The sleeve 8 made of an elastic material causes the fixing bolt 10 to come into direct contact with the mounting plate 2 when a horizontal relative displacement occurs between the installation base 6 and the transformer body 1 due to vibration such as an earthquake. It is provided to prevent large vibration from being transmitted from the installation base 6 to the transformer main body through the fixing bolt 10.

[Problems to be Solved by the Invention] In the above-described vibration-proof mounting device, the nut 10 must be strongly tightened until the spring washer 12 is sufficiently compressed so that the nut 11 does not loosen, and if this tightening force increases. In some cases, an excessive compressive force is applied to the vibration isolation rubbers 7A and 7B, and these rubbers are excessively deformed to lose the vibration isolation effect.

On the contrary, in order to maintain a good vibration damping effect, the nut 11
If tightened properly, this nut could become loose during transportation of the transformer.

Further, since the bolt 10 only penetrates the hole 6a of the installation base loosely, if a lateral force is applied to the transformer,
As shown in the figure, there is a problem that the bolt 10 is inclined and the sleeve 8 is damaged, or the thread of the bolt 10 is damaged. In particular, if the sleeve 8 is damaged, the fixing bolt 10 directly contacts the inner circumference of the hole 2a of the mounting plate 2 when the relative displacement in the horizontal direction occurs between the installation base 6 and the transformer body 1, and Since large vibrations are transmitted to the transformer body, there is a risk that the transformer body may not be sufficiently protected against vibrations during transportation of the transformer and earthquakes.

An object of the present invention is to provide an anti-vibration mounting device for a transformer that solves the above problems.

[Means for Solving the Problems] A vibration isolation mounting device for a transformer according to the present invention is a transformer main body 100 as shown in FIGS. 1 (A), (B) and FIG. 2 showing an embodiment. Is a transformer mounting plate 300, and the mounting plate is mounted on the installation base 200 via the fixing bolt 900 and the vibration-proofing means. The vibration-proofing means moves the mounting plate 300 up and down. The upper vibration isolation elastic member 500 and the lower vibration isolation elastic member 600 are arranged so as to be sandwiched between the upper vibration isolation elastic member 500 and the lower vibration isolation elastic member 600.
Are arranged. The sleeve 700 is inserted into the hole provided by penetrating the upper vibration-damping elastic member 500, the mounting plate 300, and the lower vibration-damping elastic member 600, and the hole provided in the washer 800 and the sleeve 700 are penetrated. Fixing bolt 9
00 is screwed into a screw hole 204 provided in the installation base 200. Further, a nut 901 is screwed into the lower end portion of the fixing bolt 900 protruding from the installation base 200, and the nut is tightened with respect to the installation base 200.

In the above configuration, the upper vibration isolation elastic member 500 is attached to the mounting plate 3
No. 00, but as shown in FIG. 3 showing another embodiment of the present invention, the leg portion 112 provided on the fastening metal fitting 111 for fastening the lower yoke portion of the transformer main body is attached. Board 30
0, and the upper and lower vibration-damping elastic members 500 and 600 may be arranged above and below the polymer of the leg 112 and the mounting plate 300, respectively.
In this case, the upper vibration isolating elastic member, the lower iron core tightening metal fitting leg 112, the mounting plate 300, and the lower vibration isolating elastic member 6 are provided.
The sleeve 700 is inserted into the hole formed by passing through 00, and the fixing bolt 900 is screwed into the screw hole 204 provided in the installation base 200 through the hole provided in the washer 800 and the sleeve 700. Also in this case, the installation base 200
Nut 901 at the lower end of the fixing bolt 900 protruding from
And tighten the nut to the installation base 200.

[Operation] As described above, the fixing bolt is screwed into the screw hole provided on the installation base, and the nut is screwed to the lower end portion of the fixing bolt protruding from the installation base to tighten the nut to the installation base. When the fixing bolt is prevented from rotating by means of, the fixing bolt does not loosen even if the fixing bolt is loosely tightened to the elastic member. Therefore, without excessively compressing or deforming the elastic members 500 and 600, the mounting plate 300 is mounted on the mounting base 200 with an appropriate tightening force within a range in which each elastic member exerts a large vibration damping effect.
It can be fastened and attached to, and the vibration damping effect can be enhanced.

Further, as described above, the lower end of the fixing bolt 900 is attached to the base 2
If it is screwed into the screw hole 204 of 00, the fixing bolt does not tilt when a lateral external force acts on the transformer body. Therefore, it is possible to prevent deformation of the vibration-proof elastic member and damage to the sleeve, and to maintain a good vibration-proof effect.

Further, the vibration-proof elastic members 500 and 600 are disposed above and below the polymer of the leg 112 of the lower yoke fastening member 111 and the mounting plate 300, and the polymer and the vibration-proof elastic member are penetrated. When the solid bolt 900 is screwed into the screw hole 204 provided in the installation base 200 through the sleeve inserted in the hole, the end positions of the mounting plate and the installation base are set to the end of the lower iron core clamp. Since the positions can be matched or at least brought close to each other, the width dimension of the installation base can be shortened, and the installation space of the transformer can be reduced.

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 (A), (B) and FIG. 2 show an embodiment of the present invention, and FIGS. 1 (A) and (B) show the whole of a transformer adopting the mounting device of the present invention. Fig. 2 shows the structure, and Fig. 2 shows the structure of a mounting device used in the transformer.

In FIGS. 1 (A) and (B), 100 is a transformer main body, and this transformer main body is a three-leg iron core 106 having an upper yoke portion 101 and a lower yoke portion 102, and leg portions 103 to 105. , And three-phase windings 107 to 109 respectively wound around the legs 103 to 105. The upper yoke portion 101 is fastened by an upper iron core fastening metal fitting 110, and the lower yoke portion 102 is fastened by a lower iron core fastening metal fitting 111.

The lower iron core fastening member 111 is made of an angle member and has a leg portion 112 extending in the horizontal direction, and the leg portion 112 is attached to the installation base 200 via the vibration isolating attachment device according to the present invention.

Referring to FIG. 2, the construction of the antivibration mounting device is shown in detail. The installation base 200 used in the present embodiment is a channel member 201 and an angle member 202 that are appropriately combined and welded, and has a horizontal plate portion 203 at the upper end thereof. In this example, two installation bases 200, 200 are provided at intervals in the length direction of the transformer main body 100,
These installation bases 200, 200 are arranged in parallel at intervals in the length direction of the iron core.

Band-plate-shaped mounting plates 300, 300 are provided corresponding to the two installation bases 200, 200, respectively, and each mounting plate is brought into contact with the lower surface of the leg portion 112 of the lower iron core tightening metal fitting 111 so that the bolts 400, Legs 1 supported by nuts 401
It is fastened to 12. 402 is a spring washer.

The length of each mounting plate 300 is set to be sufficiently larger than the width dimension of the lower end of the transformer main body (the distance between the outer ends of the legs 112 of the lower iron core fastening member), and both ends of the mounting plate 300 are set. Through holes 301 are provided near the respective portions.
The upper vibration-damping elastic member 500 and the lower vibration-damping elastic member 600 are arranged so as to sandwich the portion of the mounting plate 300 where each through-hole 301 is provided from above and below, and the mounting plate 300 includes the lower vibration-damping elastic member 600. It is arranged on the horizontal plate portion 203 of the installation base 200 via.

The vibration-proof elastic members 500 and 600 are made of an elastic material such as rubber. The elastic members 500 and 600 are provided with through-holes 501 and 601 which are aligned with the through-holes 301, respectively. Is through hole 30
The diameter is larger than 1. Also the installation base 200
The horizontal plate portion 203 is provided with screw holes 204 aligned with the through holes 301, 501 and 601.

A sleeve 700 made of an elastic material such as rubber is inserted into the through holes 501, 301 and 601. This sleeve has an outer diameter that fits into the through hole 301 with almost no gap, and the elastic member 600 from the upper end of the through hole 501 of the elastic member 500.
Has a length equal to or slightly shorter than the distance to the lower end of the through hole 601, and a gap is provided between the outer circumference of the sleeve 700 and the inner circumferences of the through holes 501 and 601 of the elastic member. Has been formed.

A washer 800 is arranged on the elastic member 500 for upper vibration isolation, and the washer 800 has through holes 501, 301, 601.
Also, a through hole 801 which is aligned with the screw hole 204 is provided.

Then, a fixing bolt 900 is inserted into the hole 801 of the washer 800 and the sleeve 700, and the fixing bolt 900 is screwed into the screw hole 204 of the installation base and tightened. Further, a nut 901 is screwed onto the lower end of the fixing bolt 900 protruding downward from the horizontal plate portion 203 of the installation base. A spring washer 902 is arranged between the nut 901 and the horizontal plate portion 203, and the nut 901 is tightened to the horizontal plate portion 203 of the installation base via the spring washer 902 to prevent the fixing bolt 900 from rotating. .

According to this structure, the fixing bolt does not tilt even if an external force in the lateral direction acts on the transformer body. Therefore, there is no fear that the vibration-proof elastic member is excessively deformed and the vibration-proof effect is reduced, and the thread of the fixing bolt is not damaged. Moreover, the nut 901 is screwed into the fixing bolt 900,
Since the fixing bolt is prevented from rotating, even if the fixing bolt 900 is loosely tightened to the elastic member, the fixing bolt does not loosen. Therefore, the elastic members 500, 6
It is possible to fasten and mount the mounting plate 300 to the installation base 200 with an appropriate tightening force within a range in which each elastic member exerts a large vibration damping effect without excessively compressing and deforming 00. Can be increased.

Moreover, since the nut 901 is screwed into the fixing bolt 900 to prevent the fixing bolt from rotating, the fixing bolt does not loosen even if vibration or the like is applied to the transformer, and the transformer is stably supported for a long period of time. can do.

FIG. 3 shows a further embodiment of the present invention. In this embodiment, the position of the end of the mounting plate 300 is made to coincide with the position of the end of the leg 112 of the lower iron core fastening member 111. In addition, the length of the mounting plate 300 is set to be short. And leg 1
12 and the mounting plate 300 are sandwiched from above and below the upper vibration-damping elastic member 500 and the lower vibration-damping elastic member 600.
And the mounting plate 300 has the lower elastic member 600 for vibration isolation.
It is mounted on the installation base 200 via the. The leg 112 is provided with a through hole 113 having the same diameter as the through hole 301 of the mounting plate 300. The elastic member 600 is inserted into the through holes 501, 113, 301, and 600 from the upper end position of the through hole 501 of the elastic member 500. A rubber sleeve 700 having a length reaching the lower end position of the through hole 601 is inserted. The outer diameter of the sleeve 700 is set to a size that fits into the inner circumferences of the through holes 113 and 301 with almost no gap.

A washer 800 is arranged on the elastic member 500 for upper vibration isolation, and a fixing bolt 900 that passes through the through hole 801 of the washer and the inside of the sleeve 700 is provided in the screw hole 20 of the installation base 200.
It is screwed into 4. Horizontal plate portion 20 of the installation base 200
A locking bolt nut 901 is screwed onto the lower end portion of the fixing bolt projecting downward from No. 3, and the nut 901 is tightened to the horizontal plate portion 203 of the installation base via the spring washer 902.

According to this embodiment, since the length of the mounting plate 300 can be shortened, the area required for installing the transformer can be reduced.

[Advantage of Invention] As described above, according to the present invention, the fixing bolt is screwed into the screw hole provided in the installation base, and the nut is screwed into the lower end portion of the fixing bolt protruding from the installation base. Since the fixing bolt is prevented from rotating by being tightened with respect to the installation base, the fixing bolt does not loosen even if the fixing bolt is loosely tightened with respect to the elastic member. Therefore, without excessively compressing or deforming the elastic members, the mounting plate can be fastened to the installation base with a proper tightening force within a range in which each elastic member exerts a large vibration-proof effect, and the vibration-proof effect can be achieved. Can be increased.

Further, according to the present invention, since the lower end of the fixing bolt is screwed into the screw hole of the base, it is possible to prevent the fixing bolt from tilting when an external lateral force is applied to the transformer main body. It is possible to prevent the sleeve from being damaged by the deformation of the vibrating elastic member, and to maintain a good vibration damping effect.

Particularly, according to the invention described in claim 2, since the end positions of the mounting plate and the installation base can be made to coincide with or at least come close to the end positions of the lower iron core fastening member,
There is an advantage that the installation space of the transformer can be reduced by shortening the width dimension of the installation base.

[Brief description of drawings]

1 (A) is a front view showing an example of a transformer to which the mounting device of the present invention is applied, FIG. 1 (B) is a right side view of FIG. 1 (A), and FIG. 2 is an implementation of the present invention. FIG. 3 is an enlarged sectional view showing an essential part of an example, FIG. 3 is a sectional view showing an essential part of another different embodiment of the present invention, and FIG. 4 is a sectional view showing a structure of a conventional mounting device. FIG. 5 is a sectional view showing a state of the mounting device when a lateral force is applied to the transformer mounted by the conventional mounting device. 100: transformer main body, 111: lower iron core tightening fitting,
112 ... Legs, 200 ... Installation base, 203 ... Horizontal plate, 204 ... Screw hole, 300 ... Mounting plate, 500
...... Upper anti-vibration elastic member 501 ・ ・ ・ Through hole 600
... Lower anti-vibration elastic member, 601 ... Through hole, 700 ...
Sleeve, 800 ... Washer, 801, ... Through hole, 900
...... Fixing bolt.

Front page continuation (72) Fumio Seto Inventor, Fumio Seto 2-1-1, Tagawa 2-chome, Yodogawa-ku, Osaka (56) References JP-A-62-126608 (JP, A) (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A vibration-damping mounting device for a transformer, wherein the transformer main body is mounted on a transformer mounting plate, and the mounting plate is mounted on a mounting base via fixing bolts and vibration-proofing means. The upper vibration-damping elastic member comprises an upper vibration-damping elastic member and a lower vibration-damping elastic member arranged so as to sandwich the mounting plate from above and below, and a washer is arranged on the upper vibration-damping elastic member. A sleeve made of an elastic material is inserted into a hole provided through the mounting plate and the lower vibration-proof elastic member, and the fixing bolt is provided on the installation base through the hole provided on the washer and the sleeve. A nut is screwed into a lower end portion of a fixing bolt projecting from the installation base, and the nut is tightened with respect to the installation base. Swing mounting device. 2. The transformer main body is mounted on the transformer mounting plate in a state where the legs provided on the lower iron core tightening fitting of the transformer main body are superposed on the transformer mounting plate, and the mounting plate is fixed with a fixing bolt. And a vibration damping means, the vibration damping mounting device for a transformer mounted on an installation base, wherein the vibration damping means is arranged so as to sandwich a polymer of a leg portion of the lower iron core tightening bracket and a mounting plate from above and below. A top washer elastic member and a lower isolators elastic member, and a washer is disposed on the upper isolators elastic member, and the upper isolators elastic member and the legs of the lower iron core tightening metal fittings. A sleeve made of an elastic material is inserted into a hole penetrating the mounting plate and the lower vibration-isolating elastic member, and the fixing bolt is provided in the installation base through the hole provided in the washer and the sleeve. Screwed into the screw hole and protruded from the installation base. An anti-vibration mounting device for a transformer, wherein a nut is screwed to a lower end portion of the fixing bolt, and the nut is fastened to the installation base.