JP2000277346A - Transformer vibration-proof rubber remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transformer vibration-proof rubber remover capable of safely removing a vibration-proof rubber. SOLUTION: This vibration-proof rubber remover has an engaging tool 11 engaged in a U-shape to a vibration-proof rubber to be removed, a support metal fixture 19 for connecting both ends of this hook 11 and a hydraulic jack 20 interposed between this hook 19 and a transformer base 2, so that a vibration-proof rubber 7 interposed between the transformer base 2 and base concrete 3 at a site, where an end of an anchor bolt penetrating the transformer base 2 is screw-threaded and fastened with an anchor socket 5 embedded in the base concrete 3, is removed after the removal of the anchor bolt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a transformer base and a base concrete where an end of an anchor bolt penetrating a transformer base is screwed and fastened to an anchor socket embedded in the base concrete. The present invention relates to a transformer anti-vibration rubber removing device for removing the anti-vibration rubber interposed between the transformer and the anchor bolt after removing the anchor bolt.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, between a transformer base 2 of a transformer body 1 and a foundation concrete 3, the vibration of the transformer body 1 is prevented from being transmitted to the foundation concrete 3. For the purpose of vibration reduction, the vibration isolating rubber 4 is disposed.

On the other hand, for the purpose of fixing the transformer body 1,
Embed anchor socket 5 in foundation concrete 3
The transformer base 2 is fastened to the anchor socket 5 with the anchor bolt 6. In the case of this structure, an anti-vibration rubber 7 is initially arranged between the transformer base 2 and the foundation concrete 3 even at a fastening position by the anchor bolt 6 in order to minimize vibration transmission.

However, at present, it is known that even if the anti-vibration rubber 7 is removed and the anchor bolt 6 is rigidly connected to the anchor socket 5, the increase in vibration transmission is within a range in which there is no problem in practical use.

[0005] In recent years, with respect to a transformer in operation in which an anti-vibration rubber 7 is disposed on an anchor bolt 6, the anti-vibration rubber 7 at the anchor bolt 6 has been removed for the purpose of improving seismic performance.
By replacing with a metal nut 8 as shown in FIG. 9A or by replacing with a metal liner 9 as shown in FIG. The work to minimize the bending stress acting on 6 is increasing. In addition, the liner 9 is welded to the transformer base 2 at the welded portion 10 after the replacement.

In this case, since the vibration isolating rubber 7 at the anchor bolt 6 is compressed, it cannot be easily pulled out even if the anchor bolt 6 is removed. Therefore, there is a demand for the appearance of a transformer anti-vibration rubber removing device that can easily remove the anti-vibration rubber 7.

FIGS. 10 (A) and 10 (B) show two types of constructions of a conventional transformer anti-vibration rubber removing device.

[0008] A conventional transformer anti-vibration rubber removing device is shown in FIG.
As shown in (A), after the anchor bolts 6 are removed, the hook 11 made of a wire is hooked in a U-shape on the vibration isolating rubber 7 to be removed, and the hook 11 is pulled by the wire drawing machine 12. , The anti-vibration rubber 7 was pulled and removed.
And the existing hook 15 to be fixed through the above is required.

When there is no existing hook 15 in the surrounding area, it is necessary to install the temporary hook 16 with the fixing anchor 17 as shown in FIG.

[0010]

However, FIG.
The conventional transformer anti-vibration rubber removing device shown in FIGS. 1A and 1B has a problem that the existing hook 15 and the temporary hook 16 are required. In addition, when the anti-vibration rubber 7 is pulled out, the hook 11 made of a wire jumps off, and there is a problem with danger.

[0011] Also, the entire transformer is jacked up,
Although a method of removing the anti-vibration rubber 7 is also conceivable, it is difficult to adopt it because it is difficult to separate the equipment fastened to the transformer while the transformer is operating and it is difficult to control the amount of jack-up. .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a transformer vibration-removing rubber removing device capable of safely removing the vibration-proof rubber.

Another object of the present invention is to provide a transformer anti-vibration rubber removing device which does not require a hook.

[0014]

SUMMARY OF THE INVENTION The present invention relates to a transformer base where a tip of an anchor bolt penetrating a transformer base is screwed and fastened to an anchor socket embedded in a foundation concrete. An object of the present invention is to improve a transformer vibration-absorbing rubber removing device that removes vibration-proof rubber interposed between the foundation concrete and after removing an anchor bolt.

In the transformer anti-vibration rubber removing device according to the present invention, a hook for hooking the anti-vibration rubber to be removed in a U-shape, a supporting bracket to which both ends of the hook are connected, A hydraulic jack is provided between the support bracket and the transformer base.

In such a transformer vibration isolating rubber removing device,
A hook is hooked on the anti-vibration rubber to be removed in a U-shape, both ends of the hook are connected to a support bracket, and a hydraulic jack is interposed between the support bracket and the transformer base. By extending the hydraulic jack, the anti-vibration rubber to be removed is pulled by the hook and removed. In such a device, since the vibration isolating rubber can be removed by operating the hydraulic jack, remote control becomes possible, and even if the hooking tool jumps, the vibration isolating rubber can be safely removed. Further, with this device, the vibration isolating rubber can be removed without the need for a hook, and the handling is easy and the construction cost can be reduced. In addition, the device is compact,
Since the work space is small, the work can be performed without being affected by the environment (mainly the work space) around the installed transformer.

Further, in the transformer anti-vibration rubber removing device according to the present invention, a hook for hooking the anti-vibration rubber to be removed in a U-shape, and a support bracket to which both ends of the hook are connected are provided. A hydraulic jack having one end in contact with the support fitting, and a legged adapter interposed between the other end of the hydraulic jack and the transformer base.

With the use of the legged adapter,
If the rubber cushion cannot be removed with the maximum stroke of the hydraulic jack, the rubber cushion can be easily removed. Also, since this adapter has legs, when the adapter is interposed between the other end of the hydraulic jack and the transformer base, if there is no leg, it will be the work of pushing out the piston of the hydraulic jack while holding the adapter and fixing it,
Where two-person work is required, one-person work can be achieved by eliminating the need to hold the adapter. Other effects are the same as those in the above-described example.

[0019]

1 (A), 1 (B) and 2 show a first embodiment of a transformer anti-vibration rubber removing apparatus according to the present invention. B) is a plan view and a side view of a use state of the transformer anti-vibration rubber removing device of this example,
FIG. 2 is a plan view of the support fitting used in the apparatus of the present embodiment.

In the transformer anti-vibration rubber removing device of the present embodiment, after the anchor bolt 6 is removed, a hook 11 made of a wire hooked in a U-shape on the anti-vibration rubber 7 to be removed.
And a support fitting 19 in which both ends of the hooking tool 11 are connected by a connecting tool 18, and a hydraulic jack 20 interposed between the support fitting 19 and the transformer base 2. The support fitting 19 has a jack contact surface 19b erected at one end on a T-shaped bottom plate 19a, and a pair of jack side guides 19c erected on the bottom plate 19a in a direction orthogonal to the jack contact surface 19b. It has a structure. The hydraulic jack 20 includes a pair of jack side guides 1.
9c, one end of which is located at the jack contact surface 19c.
b, and the other end thereof contacts the transformer base 2. Reference numeral 21 denotes a liner interposed between the foundation concrete 3 and the bottom plate 19a of the support fitting 19.

In such a transformer anti-vibration rubber removing device,
The hook 11 is hooked on the anti-vibration rubber 7 to be removed in a U-shape, and both ends of the hook 11 are connected to the support bracket 19, and the hydraulic jack 2 is provided between the support bracket 19 and the transformer base 2.
In this state, the hydraulic jack 20 is extended, and the hook 11 pulls and removes the anti-vibration rubber 7 to be removed.

In such a device, since the vibration isolating rubber 7 can be removed by the operation of the hydraulic jack 20, remote control becomes possible, and even if the hook 11 jumps, the removing operation of the vibration isolating rubber 7 can be performed safely. It can be carried out. Further, in this device, the work of removing the vibration isolating rubber 7 can be performed without the need for the hooks 15 and 16 described above, so that the handling is easy and the construction cost can be reduced. Furthermore, since this device is compact and has a small work space, construction can be performed without being affected by the environment around the installed transformer (mainly, the work space).

FIGS. 3A, 3B and 4 show a second example of the embodiment of the transformer anti-vibration rubber removing apparatus according to the present invention, and FIGS. FIG. 4 is a plan view and a side view of a transformer used in the example of the transformer anti-vibration rubber removing apparatus, and FIG. 4 is a perspective view of an adapter with legs used in the apparatus of the present example.

In the transformer anti-vibration rubber removing apparatus of the present embodiment, the anti-vibration rubber 7 is used at the maximum stroke of the hydraulic jack 20.
If the hydraulic jack 20 cannot be removed,
Between the other end of the cable and the transformer base 2
Intervene. The legged adapter 22 is composed of a cylindrical adapter body 22a and a pair of legs 22b projecting downward in the middle of the adapter body 22a in the longitudinal direction. Contact plates 22c and 22d are fixed to both ends of the cylindrical adapter body 22a in the longitudinal direction.

With the use of the legged adapter 22 as described above, the vibration isolating rubber 7 can be used at the maximum stroke of the hydraulic jack 20.
Can not be removed easily, the rubber cushion 7 can be easily removed. The adapter 22 is connected to the leg 22b.
So that the adapter 22 is connected to the hydraulic jack 20
At the time of being interposed between the other end and the transformer base 2, if there is no leg 22b, the work of pushing out the piston of the hydraulic jack 20 while holding the adapter 22 and fixing the same is required, and two people are required. By eliminating the need to hold the adapter 22, one person can work.
Other effects are the same as those in the above-described example.

FIGS. 5A, 5B and 6 show a third embodiment of the transformer vibration isolating rubber removing apparatus according to the present invention, and FIGS. FIG. 6 is a plan view and a side view of a use state of the transformer anti-vibration rubber removing apparatus of the example, and FIG. 6 is a plan view of a support bracket used in the apparatus of the present example.

In the transformer anti-vibration rubber removing apparatus of this embodiment, a hook 11 'made of a U-shaped metal is used as a hook, and a rectangular bottom plate 19a' is used for the support metal 19. Other configurations are the same as those of the first example shown in FIGS.

FIGS. 7A and 7B are a plan view and a side view showing a fourth embodiment of the transformer anti-vibration rubber removing apparatus according to the present invention in use.

In the transformer anti-vibration rubber removing apparatus of the present embodiment, when the anti-vibration rubber 7 cannot be removed with the maximum stroke of the hydraulic jack 20 in the example shown in FIGS.
As shown, the other end of the hydraulic jack 20 and the transformer base 2
This shows an example in which a legged adapter 22 is interposed between the two.

In the third and fourth examples, the same operation and effect as those in the first and second examples can be obtained.

[0031]

In the transformer anti-vibration rubber removing apparatus according to the present invention, a hook is hooked on the anti-vibration rubber to be removed in a U-shape, and both ends of the hook are connected to a support bracket. A hydraulic jack is interposed between the bracket and the transformer base, and by extending the hydraulic jack in this state, the anti-vibration rubber to be removed is pulled by the hook and removed, so remote operation can be performed by using the hydraulic jack. This makes it possible to safely remove the anti-vibration rubber even if the hooking tool jumps. Further, with this device, the vibration isolating rubber can be removed without the need for a hook, and the handling is easy and the construction cost can be reduced. Further, since this device is compact and has a small work space, construction can be performed without being affected by the environment around the installed transformer.

[Brief description of the drawings]

FIGS. 1 (A) and 1 (B) are a plan view and a side view showing a first example of an embodiment of a transformer anti-vibration rubber removing apparatus according to the present invention in a use state.

FIG. 2 is a plan view of a support fitting used in the apparatus of the present embodiment.

FIGS. 3A and 3B are a plan view and a side view showing a second example of the embodiment of the transformer anti-vibration rubber removing apparatus according to the present invention in a use state.

FIG. 4 is a perspective view of an adapter with legs used in the device of the present example.

FIGS. 5A and 5B are a plan view and a side view showing a third example of the embodiment of the transformer anti-vibration rubber removing apparatus according to the present invention in a use state.

FIG. 6 is a plan view of a support fitting used in the apparatus of the present example.

FIGS. 7A and 7B are a plan view and a side view showing a fourth example of the embodiment of the transformer anti-vibration rubber removing apparatus according to the present invention in a use state.

FIG. 8 is a longitudinal sectional view showing a conventional vibration isolating structure of a transformer.

9 (A) and 9 (B) are longitudinal sectional views showing a state in which a vibration isolating rubber is replaced with a nut or a liner at a fastening point by an anchor bolt in a conventional transformer.

10 (A) and 10 (B) are longitudinal sectional views showing a process of replacing a vibration isolating rubber with a liner at a fastening point by an anchor bolt in a conventional transformer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transformer main body 2 Transformer base 3 Foundation concrete 4 Anti-vibration rubber 5 Anchor socket 6 Anchor bolt 7 Anti-vibration rubber 8 Nut 9 Liner 10 Welded part 11, 11 'Hooking tool 12 Stranding machine 13 Wire 14 Shackle 15 Existing hook Reference Signs List 16 Temporary hook 17 Fixing anchor 18 Connector 19 Support metal 19a, 19a 'Bottom plate 19b Jack contact surface 19c Jack side guide 20 Hydraulic jack 21 Liner 22 Legged adapter 22a Adapter body 22b Leg 22c, 22d Contact plate

Claims (2)

[Claims] At a point where the tip of an anchor bolt penetrating through a transformer base is screwed and fastened to an anchor socket embedded in a foundation concrete, between the transformer base and the foundation concrete. In a transformer anti-vibration rubber removing device for removing interposed anti-vibration rubber after removing the anchor bolt, a hook for hooking the anti-vibration rubber to be removed in a U-shape, and both ends of the hook And a hydraulic jack interposed between the support bracket and the transformer base. 2. At a point where the tip of an anchor bolt penetrating a transformer base is screwed and fastened to an anchor socket embedded in the foundation concrete, between the transformer base and the foundation concrete. In a transformer anti-vibration rubber removing device for removing interposed anti-vibration rubber after removing the anchor bolt, a hook for hooking the anti-vibration rubber to be removed in a U-shape, and both ends of the hook Are connected, a hydraulic jack having one end abutting on the support metal, and a legged adapter interposed between the other end of the hydraulic jack and the transformer base. Features Transformer anti-vibration rubber removal equipment.