KR101625389B1 - Urethane cushion and earthquake-proof spring coupled earthquake-proof apparatus for switchgear - Google Patents

Abstract

The present invention relates to a urethane cushioning device and a seismic spring-coupled type seismic isolation device for a transmission / distribution system, comprising: a lower case coupled to a bottom surface of the enclosure at a lower portion of a cabinet via bolts, An upper case coupled to the lower surface of the enclosure of the switchgear and coupled to the upper portion of the lower case to surround both side walls of the lower case; The upper portion of the upper case penetrates through the upper case and penetrates the lower surface of the enclosure of the power distribution panel and is fixed by the second fixing bolt. The lower portion of the lower case is fixed to the lower portion of the lower case by the first fixing bolt, A support having a height fixing nut formed between the fixing bolt and the upper surface of the upper case; An earthquake-resistant spring formed inside the upper and lower cases to surround the support; And a urethane shock absorber into which the earthquake-resistant spring is fitted. The present invention has the effect of enabling the earthquake-resistant effect of the earthquake-proof apparatus, for example, by the urethane shock absorber and the earthquake-resistant spring, even when subjected to external vibration or impact.

Description

[0001] URETHANE CUSHION AND EARTHQUAKE-PROOF SPRING COUPLED EARTHQUAKE-PROOF APPARATUS FOR SWITCHGEAR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic resistant device for a transmission / transmission system, and more particularly, to a seismic resistant device for a urethane cushion and a seismic resistant spring type transmission /

Generally, it is impossible to supply electric power which can be used as it is from the electric power company like general electric equipment of low voltage of 110V or 220V because electric power of private use such as building or factory is large.

Therefore, it is necessary to transform a high voltage of 3,300V or 6,600V from a power line of a substation into a commercial voltage, and especially in a private building of a large-scale building, a special high voltage of 22.9kV is supplied and transformed into a commercial voltage again. The equipment that makes this possible is the switchboard. These switchboards include a distribution panel, a motor control center panel, a low-pressure panel, a high-pressure panel, a transformer panel, and an extra-high pressure panel.

These substations are equipped with a power reception facility for receiving high pressure and special high pressure from substations, a substation for substracting high voltage and special high voltage received from substations to commercial voltage, It is formed as a distribution facility for supplying electricity to supply the electricity safely and efficiently into the building.

The enclosure of such a switchgear is constructed such that an anchor bolt is inserted into an inner or outer concrete floor of the building, the floor angle is assembled, the column angle is assembled to the floor angle, and the enclosure is assembled to the assembled column angle, The angle is assembled by bolt tightening and the seismic design is not done separately.

Therefore, in the conventional switchgear, the vibration situation is directly transmitted to the panel itself due to the mechanical vibration or the earthquake caused by the electromagnetic force due to the vibration of the floor or the energization of the large electric power, and various devices mounted therein are damaged by an earthquake or the like It is a fact that is often happening. That is, various components installed in the enclosure flow, and damage such as power outage and fire occurs.

As a conventional technique for solving such a problem, there is known a " switchboard having an earthquake-proof function " of Korean Patent No. 0939475, and representative drawings of this patent are shown in Figs. 1A to 1C. FIG. 1A is an exploded perspective view of an earthquake-proofing means of a power transmission and distribution system according to the prior art, and FIGS. 1B and 1C are sectional views showing a state of mitigating an impact force applied in a vertical or horizontal direction in the earthquake-proofing means. (The reference numerals shown in Figs. 1A to 1C are not related to the reference numerals of the embodiments according to the present embodiment,

Referring to Figs. 1A to 1C, when vibrations or shocks are applied to the switchboard, the earthquake-proof means mitigates the impact in the form of a dotted line shown in Figs. 1B and 1C. However, since the vibration-isolating means is coupled to the bottom angle 31 and the supporting angle 32 so as to overlap only a part of the bottom angle 31, the supporting angle 32 is smaller than the bottom angle 31, A problem arises in which it is detached from the apparatus.

1C, when the horizontal impact is applied, the support bolts 72 are moved at a predetermined angle in the bearing support case 71, which are worn out or worn while hitting the support bolts 72, The bearing support case 71 is disassembled. Also, there is a problem that the support bolt 72 hits the bearing support case 71 to generate noise.

On the other hand, in addition to the above-mentioned problems, there is also a problem that the load applied to each bottom of the switchboard is not constant, and the load to be handled by each of the outboards is different, so that the interval between the two outboards of each outboard is not constant.

As another conventional technique for solving such a problem, there is known a " discharge gate for a switchgear " in Korean Patent Registration No. 1100147, and a representative drawing of this patent is shown in Fig. Fig. 2 is a perspective view of a dustproof box for a switchboard according to the prior art. (The reference numerals shown in FIG. 2 are not related to the above-described prior art and reference numerals in the drawings according to this embodiment.

2, a plurality of dustproof wires 1 are installed on the dustproof partition plates 2 and 3, and a leveler 6 is provided between the dustproof partition plates 2 and 3. Here, the number of the coil springs 10 of the leveler 6 is controlled to adjust the supporting force of the discharge port 100.

However, such a vibration damping element 100 has a problem that the leveler 6 is composed of the anti-vibration rubber 9 and the coil spring 10, which is complicated in construction.

And the type and characteristics of the vibration proof rubber (9), it is required to carry out a troublesome operation, and it takes a long time to work.

Further, since the structure is such that the number of the coil springs 10 must be differently applied after measuring the load at each corner of the switchgear, there is a problem that the operation is troublesome.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems, and an object of the present invention is to provide an earthquake-proof apparatus for a seismic surveillance system capable of earthquake-proof by external shock or vibration.

It is another object of the present invention to provide an earthquake-resistant apparatus for a power-transmission-and-distribution system which can be easily applied to each corner of a load-carrying panel whose load is not constant.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided an urethane bumper and a seismic spring-coupled type seismic isolation device for a switchgear comprising a lower case coupled to a bottom surface of the enclosure under bolts, ; An upper case coupled to a lower surface of an enclosure of the switchgear and coupled to an upper portion of the lower case so as to surround both side walls of the lower case; The lower portion of the lower case is fixed to the lower surface of the lower case with a first fixing bolt and the upper portion of the upper case passes through the upper case and passes through the lower surface of the enclosure of the power distribution panel, A support having a height fixing nut formed between the second fixing bolt and the upper surface of the upper case; An anti-vibration spring formed inside the upper and lower cases to surround the support; And a urethane shock absorber into which the earthquake-resistant spring is fitted.

The urethane cushion of the urethane cushion and the earthquake-resistant spring-coupled vibration damping device according to the present invention is characterized in that a plurality of holes are formed in the longitudinal direction to perform a buffering action.

The present invention has an effect of enabling earthquake-proofing by external shocks or shocks due to the buffering action of the earthquake-proof apparatus. That is, double buffering action by the urethane buffer and the earthquake-resistant spring is effective. Therefore, it is possible to prevent the earthquake damage such as the turning over of the power distribution board itself or trembling beforehand, and also to prevent damage such as power outage and fire which may occur due to the flow of various components in the enclosure There is also.

Also, the height fixing nut provided between the second fixing bolt and the top surface of the upper case can be applied to a constant-load control panel and can be applied to an uneven floor.

In addition, when the transmission / reception section is tilted to the right or to the left due to the vibration, a tensile force of the earthquake-resistant spring and a plurality of holes formed in the urethane cushioner can buffer the earthquake.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

Figs. 1A to 1C are an exploded perspective view and a cross-sectional view of an earthquake-proofing means of a switchboard according to the prior art.
2 is a perspective view of a dustproof box for a switchboard according to another prior art.
3 is a cross-sectional view showing a seismic system for a transmission / distribution system according to the present invention.
4A and 4B are perspective views showing a urethane shock absorber and an earthquake-resistant spring of a seismic isolation system for a transmission / distribution system according to the present invention.
FIG. 5 is a front view showing a switchboard in which a seismic isolation device for a switchboard according to the present invention is installed.
6A and 6B are views showing that the earthquake-resistant earthquake can be performed in a state in which the earthquake-resistant apparatus for earthquake-resistant apparatus according to the present invention is installed in a state in which the earthquake-induced tilting of the earthquake-

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a urethane shock absorber and a seismic resistant spring type seismic isolation system for a switchboard according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. 4A and 4B are perspective views showing a urethane bumper and an earthquake-resistant spring of a seismic isolation system for a transmission / distribution system according to the present invention. FIG. 5 is a perspective view of a seismic- Fig. 2 is a front view showing a power transmission and reception system equipped with an earthquake-proof apparatus.

3 to 5, a seismic isolation system for a switchgear according to the present invention includes a lower case 10, an upper case 20, a support 30, a seismic spring 40, and a urethane shock absorber 50 .

The lower case 10 is coupled to the floor 70 on which the switchboard is installed. That is, the lower case 10 is coupled to the bottom surface 70 through the bolts 11 at the lower portion of the enclosure 60 of the switchboard. The bolt 11 tightly engages the bottom case 10 and the bottom surface 70 using an anchor bolt. The lower case 10 is formed with both side walls 12a and 12b toward the upper side. The following seismic spring 40 and urethane cushion 50 are inserted between the side walls 12a and 12b of the lower case 10.

The upper case 20 is coupled to the lower surface of the enclosure 60 of the switchboard. The upper case 20 is engaged by the support portion 30 described below when the upper case 20 is coupled with the enclosure 60. That is, the second fixing bolt 32 of the supporting part 30 engages the upper case 20 and the lower surface of the enclosure 60 of the power distribution panel through the supporting part 30 penetrating the upper case 20. The upper case 20 is coupled to the upper portion of the lower case 20 so as to surround the side walls 12a and 12b of the lower case 10 described above.

The support portion 30 passes through the center of the lower and upper cases 10, 20. The support portion 30 includes a first fixing bolt 31, a second fixing bolt 32, and a height fixing nut 33. The first fixing bolt 31 is fixed to the lower surface of the lower case 10 at a lower portion of the supporting portion 30. The second fixing bolt 32 penetrates through the upper case 20 from the upper portion of the support portion 30 and is fixed through the lower surface of the enclosure 60 of the switchboard. The height fixing nut (33) is provided between the second fixing bolt (32) and the upper surface of the upper case (20). It is possible to apply the present invention to a place where the floor 70 is uneven, by applying the height fixing nut 33 to the sub-floor where the load is not constant.

The earthquake-proof spring 40 is formed so as to surround the support 30 inside the upper and lower cases 20, 10. The earthquake-proof spring (40) has an effect capable of earthquake-proof by a tensile force when the power and control panel is tilted to the left and right due to vibration.

The urethane shock absorber (50) is fitted with an earthquake-proof spring (40). A spring insertion portion 52 is formed in the urethane cushion 50 as shown in 4a so that the earthquake-proof spring 40 is fitted in the spring insertion portion 52. [ The urethane cushion 50 in which the anti-vibration spring 40 is inserted is provided so as to surround the support 30 inside the upper and lower cases 20 and 10. The urethane shock absorber 50 is formed with a plurality of holes 51 in the longitudinal direction. And these holes 51 function as a buffer. The urethane shock absorber 50 is a material having a tensile strength of 50 N / mm 2 and a compressive strength of 80 N / mm 2 or more.

6A and 6B show a state in which the earthquake-resistant apparatus 100 is capable of earthquake-proof when vibration occurs due to an earthquake or the like in a power-transmission-and-distribution system in which the earthquake-proof apparatus 100 according to the present embodiment is installed. 6A and 6B are views showing that the earthquake-resistant earthquake can be performed in a state in which the earthquake-resistant apparatus for earthquake-resistant apparatus according to the present invention is installed in a state in which the earthquake-induced tilting of the earthquake-

FIG. 6A shows a state in which the switchboard is inclined to the left, and FIG. 6B shows a state in which the switchboard is inclined to the right. As shown in the figure, even if the upper case 20 fixed to the enclosure 60 of the switchgear is tilted due to the occurrence of vibration and the switchgear shaking to the left and right, the anti-seizing spring 40 and the urethane cushioner 50, There is an effect that can earthquake.

The urethane shock absorber and the earthquake-resistant spring-mounted earthquake-proof apparatus for a power-transmission-and-distribution system according to the present embodiment are not limited to the above-described embodiments, and various modifications may be made without departing from the technical spirit of the present invention. It will be readily apparent to those skilled in the art to which the present invention pertains.

100; Urethane shock absorber and earthquake-resistant spring-mounted seismic isolation system for switchgear
10, 20; case
11; volt
12; Both side walls
30; Support
31, 32; Fixing bolt
33; Height fixing nut
40; Seismic spring
50; Urethane shock absorber
51; hole
52; Spring insertion portion
60; Enclosure of Switchboard
70; Bottom surface

Claims (2)

A lower case coupled to a floor surface through a bolt at a lower portion of the enclosure of the power distribution panel and having both side walls formed toward the upper portion;
An upper case coupled to a lower surface of an enclosure of the switchgear and coupled to an upper portion of the lower case so as to surround both side walls of the lower case;
The lower portion of the lower case is fixed to the lower surface of the lower case by a first fixing bolt and the upper portion of the upper case passes through the upper case and passes through the lower surface of the enclosure of the power distribution panel, And a height fixing nut provided between the second fixing bolt and the top surface of the upper case to adjust the spacing between the lower surface of the enclosure and the upper case of the switchgear;
An anti-vibration spring formed inside the upper and lower cases to surround the support;
And a urethane shock absorber fitted with said earthquake-resistant spring, said shock absorber having a plurality of lifelines in the longitudinal direction to perform a cushioning action. delete

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