KR20240016476A - Anti-seismic device in electrical structure enclosure - Google Patents

Abstract

The present invention relates to an earthquake-resistant device installed at the bottom of electricity-related equipment, such as switchgear (including switchgear, power panel, distribution board, etc.), solar power junction box, etc. It is sandwiched between the left and right stands fixed to the bottom plate of various electrical-related structural equipment, etc., and the lower stand fixed to the ground at a predetermined height distance from the left and right stands, and the upper surface of the left and right stands is located at the four corners of the electrical-related equipment. It is installed separately and absorbs vibration or shock transmitted from the ground while supporting the left and right stands on which electrical equipment is mounted. It is in the form of a plate, and the upper surface of the left and right stands faces the bottom plate of the electrical equipment and has one main support bolt hole. It penetrates and supports the base plate of electrical equipment from below, and includes left and right supports and buffer spring 1 to absorb up and down, left and right vibrations, front and rear supports and buffer springs 2 to absorb downward, up and down, forward and backward vibrations, and a main support bolt that supports the above buffer springs 2. The spring box that holds the head and 4 fixing bolts that secure it to the lower support, buffer spring 3 and buffer spring 4 that control the forward, left, and right vibrations of the main support bolt within the spring box, and the bolt support ball and support washer, which can be used to attach to buildings or ground surfaces. It is composed of a lower base that fixes all vibrations, a main support bolt that secures the bottom plate of electrical equipment from the spring box, a washer, and a nut, and can flexibly contract, expand, and restore with four buffer springs, two supports, and a spring box. An earthquake-resistant device that prevents vibration up, down, forward, backward, left, and right, thereby promoting stable operation of electrical equipment and minimizing damage to life and property.

Description

Anti-seismic device in electrical structure enclosure}

The present invention relates to a switchboard. It relates to an earthquake-resistant device installed at the bottom of electrical equipment such as a power panel, distribution panel, and solar junction box. More specifically, it protects electrical equipment by cushioning as much as possible the vibration transmitted to the electrical equipment due to an earthquake or external shock. It relates to earthquake-resistant devices for electrical equipment that can be protected.

In general, electrical equipment such as high and low voltage switchboards, motor control panels, distribution panels, automatic control panels, and solar power junction boxes, which are installed indoors and outdoors, are installed on concrete pads or fixed hardware on the ground or the bottom of a building, and the electrical equipment structures are secured with anchor bolts. However, in a state where the electrical equipment is fixed with anchor bolts as described above and there is no response function at all when vibration and shock occurs due to an earthquake, the electrical equipment cannot absorb the vibration and is subject to conduction or damage.

Burnout of electrical equipment, such as high/low voltage switchboards, motor control panels, distribution panels, automatic control panels, and solar power junction boxes, can cause short circuits, power outages, and fires due to disconnection of cable connections due to vibration and shock, and breakdown of insulation. This causes damage to people and property.

In particular, if the main circuit breaker is blocked due to vibration and shock caused by an earthquake in water supply and distribution facilities, it can lead to enormous damage such as failure of industrial equipment and devices and loss of stored data due to power outage.

In general, when an earthquake occurs, the magnitude of the seismic force that affects a building causes damage differently depending on the structural characteristics such as the height, shape, or material of the building. Although the safety of the above power-related equipment or facilities installed on concrete foundations must be ensured, they are left unprotected, leading to enormous economic losses to the industry due to damage to the above-mentioned facilities and shutdown of the power-related facilities due to breakdown. I'm doing it.

In particular, earthquake measures are essential for electrical equipment such as online/real-time industrial information processing control devices and OA devices in highly public areas such as electric power, nuclear power, water treatment, aviation, and railways, and the demand for earthquake-resistant facilities is increasing. .

Accordingly, due to the recent increase in frequent earthquakes, the Korean Peninsula is no longer a safe zone for earthquakes, and earthquake-resistant measures are mandatory for all public buildings and facilities pursuant to the Earthquake Disaster Countermeasures Act (Law No. 9636) and the Enforcement Decree of the Earthquake Disaster Countermeasures Act (Presidential Decree No. 21362). This is a situation that needs to be established.

Therefore, in order to improve the above-mentioned problems, there is a need to provide not only dust-proof performance but also earthquake-proof performance of electrical-related equipment such as telecommunication equipment or switchboards installed on the floor of a building.

The conventional structure had a problem in that a spring was mounted under the electrical equipment to block vibration, so that when vibration or impact was applied to the spring, the vibration according to the resonant frequency of the spring could be transmitted to the electrical equipment structure.

Public Patent No. 10-2021-0042791 (2021.04.20.) In the case of “Earthquake-proof device for electrical equipment such as switchboard connection box,” the main support bolt is attached to the floor and is composed of a spring and an anti-vibration rubber plate to limit shock absorption and durability. There was a problem.

In addition, the structure with an anti-vibration rubber plate under the electrical equipment structure has the problem that the durability of the anti-vibration rubber plate deteriorates over time, resulting in low seismic efficiency, and the task of absorbing vibration in all directions, up, down, forward, backward, left, and right.

Domestic published patent 10-2021-0042791 (2021.04.20.)

In order to solve the above problems, the present invention provides various electrical equipment that can more effectively absorb vibrations or shocks caused by earthquakes transmitted to various electrical equipment such as switchboards (including distribution boards, power boards, distribution boards, etc.) and solar power junction boxes. The purpose of the present invention is to provide an earthquake-resistant device to absorb vertical and horizontal vibrations and shocks.

In this earthquake-proof device equipped with the spring box of the present invention and a quadruple earthquake-proof buffer spring, when vibration or shock is transmitted, the resonance phenomenon of the buffer spring is dispersed into four layers and held by a bolt support ball, and an anti-vibration rubber that is weak in fireproof structure is used. The purpose of the present invention is to provide an earthquake-resistant device for electrical equipment that can prevent durability deterioration by using non-steel materials and injecting anti-corrosion grease.

The earthquake-resistant device according to the present invention for achieving the above object includes left and right stands fixed to the bottom plate of various electrical equipment such as switchboards (including switchboards, power boards, distribution boards, etc.) and solar power junction boxes, and a predetermined height gap between the left and right stands. In addition to being apart and sandwiched between the lower pedestals fixed to the floor of the building or the ground concrete foundation, the upper surfaces of the left and right pedestals are mounted on each of the four corners of the electrical equipment, and the left and right pedestals on which the electrical equipment is mounted are supported and lifted from the ground. In an earthquake-resistant device for electrical equipment that absorbs transmitted vibration or shock and blocks and absorbs vibration or shock transmitted to electrical equipment, it is in contact with the bottom plate of the electrical equipment, and the main support bolt penetrates and fixes it, supports from below, and supports left and right Left and right supports to support tilt;

In order to absorb the left and right vibrations of the left and right supports, a buffer spring 1 is located between the lower part of the left and right supports and the front and rear supports, and is located at the top of the earthquake-proof device and through which the main support bolt passes through;

Front and rear supports that support the left and right supports and buffer spring 1 from the bottom and support forward and backward tilt;

Buffer spring 2 located between the front and rear supports and the upper part of the spring box and through which the main support bolt penetrates the center of the spring;

Buffer spring 2 is supported from the bottom, the base of the main support bolt is supported by a bolt support ball, and buffer spring 3 and buffer spring 4 are placed internally at the top and bottom of the main support bolt head, and grease is injected to allow flexible movement of the balls and buffer springs. A spring box in the form of a steel box capable of damping vibrations forward, backward, left and right;

Four fixing bolts and fixing nuts to secure the spring box to the lower support;

A lower support that is fixed to the lower floor to secure the spring box and prevent the spring box from moving up and down, forward, backward, left and right;

Place the main support bolt head on the bolt support ball and buffer spring 4 in the spring box, pass through buffer spring 3 around the bolt column, pass through buffer spring 2 at the top of the spring box, pass through the front and rear supports and buffer spring 1, and then move to the left and right supports to the bottom plate of electrical equipment. The main support bolt that secures the;

And the support nut and support washer that secure the main support bolt; It is composed of a quadruple buffer spring and a bolt support ball elastically contracting, expanding and restoring between the bottom plate and the lower support of the electrical equipment, thereby preventing vibration up and down, forward, backward, left and right, thereby promoting stable operation of the electrical equipment.

The earthquake-resistant device for electrical equipment such as switchgear according to the present invention is a quadruple buffer spring and bolt support ball inserted between the lower support and the bottom of the electrical equipment structure when vibration or shock is transmitted from the ground, and the four-fold shock absorbing spring and the bolt support ball contract, expand, or restore, and are used as electrical equipment. Absorbs transmitted vibrations.

In addition, when the left and right supports and buffer spring 1 resonate due to vibration or impact, the front and rear supports stacked up and down, the spring box arranged with buffer spring 2, buffer spring 3, and buffer spring 4 hold buffer spring 1 that is about to resonate, causing the resonance to occur. Blocks vibration.

In addition, as the left and right supports, front and rear supports, and quadruple buffer springs simultaneously absorb vibration or shock transmitted from the building floor or surface concrete foundation, the stress applied to the left and right supports and buffer spring 1 is distributed, thereby reducing the vibration transmitted to electrical equipment. It can absorb shock more effectively to promote stable operation of electrical equipment and minimize damage to people and property.

Figure 1 is a front side view of the earthquake-proof device according to the present invention.
Figure 2 is an assembly drawing of earthquake-resistant device parts according to the present invention,
Figure 3 is a diagram showing the present invention in action during earthquake vibration

The present invention as described above will be described in detail through the attached drawings and examples.

It should be noted that the technical terms used in the present invention are only used to describe specific embodiments and are not intended to limit the present invention. In addition, the technical terms used in the present invention, unless specifically defined in a different sense in the present invention, should be interpreted as meanings generally understood by those skilled in the art in the technical field to which the present invention pertains, and are not overly comprehensive. It should not be interpreted in a literal or excessively reduced sense. Additionally, if the technical term used in the present invention is an incorrect technical term that does not accurately express the idea of the present invention, it should be replaced with a technical term that can be correctly understood by a person skilled in the art. In addition, general terms used in the present invention should be interpreted according to the definition in the dictionary or according to the context, and should not be interpreted in an excessively reduced sense.

Additionally, as used in the present invention, singular expressions include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as “consists of” or “comprises” should not be construed as necessarily including all of the various components or steps described in the invention, and some of the components or steps are not included. It may not be present, or it should be interpreted as including additional components or steps.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of the reference numerals, and duplicate descriptions thereof will be omitted.

Additionally, when describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted. In addition, it should be noted that the attached drawings are only intended to facilitate easy understanding of the spirit of the present invention, and should not be construed as limiting the spirit of the present invention by the attached drawings.

Figure 1 is a front side view of the earthquake-resistant device according to the present invention. It is an earthquake-resistant device for electrical equipment such as high and low voltage switchgear, motor control panel, distribution panel, and solar power junction box, and is installed on the lower surface of the structure of the electrical equipment mentioned above to prevent vibration and It is a structure installed between the ground surfaces to absorb and buffer shock, and you can see the front view from A and the side view from B in detail.

The present invention, which is a vibration absorbing device for earthquake-resistant functions of electrical equipment such as high and low voltage switchboards, motor control panels, distribution boards, and solar power junction boxes, is largely comprised of a lower support (100), a spring box (200), a bolt support ball (670), and a shock absorber. Spring 4 (650), buffer spring 3 (630), buffer spring 2 (610), front and rear supports (350), buffer spring 1 (600), left and right supports (300), and main support bolt (500) are sequentially combined. do.

The lower support 100 has a bottom that is in close contact with the ground surface, a bolt support ball 670 and a buffer spring 4 (650) are arranged to seat the main support bolt 500, and includes a buffer spring 3 (630). It is a structure that serves as a support for fixing the spring box fixing bolt 230 and fixing nut 250 for fixing the square column-shaped spring box 200.

In addition, the left and right double-sided pillars of the U-shaped lower support 100 prevent the U-shaped left and right supports 300 from being pushed to the left and right, and play a role in controlling the displacement range of the U-shaped left and right supports 300 during earthquake vibration.

In addition, it prevents the front and rear sides of the U-shaped spring box 200 from being pushed back and forth of the U-shaped front and rear support 350, and serves to control the displacement range of the U-shaped front and rear support 350 during earthquake vibration.

At this time, the diameter and size of the main support bolt 500 are determined according to the size, height, weight, and fixing location of electrical equipment such as high and low voltage switchgear, motor control panel, distribution panel, and solar power junction box.

Once the diameter of the main support bolt 500 is determined in this way, the support nut 510 and support washer 530 according to the main support bolt 500 are determined, and two or more can be fastened to the bottom plate of the electrical equipment for secure fixation. there is.

In addition, the size of the four buffer springs (600, 610, 630, 650) is larger than the load that can be withstood at more than 300,000 spring restoration cycles, and springs with an inner diameter larger than the column diameter of the main support bolt (500) are selected.

When installing the main support bolt (500), which fixes and supports electrical equipment, through the spring box (200), the front and rear supports (350), and the left and right supports (300), a bolt support ball (670), a buffer spring 4 (650), Buffer spring 3 (630), buffer spring 2 (610), buffer spring 1 (600), support nut 510, and support washer 530 are disposed.

At this time, the through hole of the main support bolt (500) of the left and right supports (300) and the front and rear supports (350) is configured with the minimum outer diameter that allows the main support bolt (500) to enter and exit, and the through hole of the main support bolt (500) of the spring box is configured to allow the main support bolt (500) to enter. Place a hole in the diameter of the support bolt (500) column that is sized to allow for clearance in the event of an earthquake or impact.

And, when there is no earthquake or vibration, the threaded part of the main support bolt (500) forms only the upper part of the left and right supports (300), and the lower part of the left and right supports (300) is installed in a form without screws.

The head of the main support bolt (500) in the spring box (200) is placed on the bolt support ball (670) and buffer spring 4 (650), is placed under buffer spring 3 (630), and has an origin return above and below the bolt support ball (670). A support washer (690) is installed for the inner size of the spring box (200), and the internal size of the spring box (200) is given only a margin equal to the vibration clearance to the head of the main support bolt (500) and the outer diameter of buffer spring 3 (630) and buffer spring 4 (650). It is manufactured to a certain size and has a structure that absorbs shock and vibration, and when necessary, grease can be injected to prevent movement deformation due to rust in the steel.

Figure 2 is an assembly drawing of earthquake-resistant device parts according to the present invention, and shows a metal ball-shaped bolt support ball that absorbs impact from the lower part of the head of the main support bolt 500 inside the spring box 200 fixed on the lower support 100. (670), buffer spring 4 (650) and buffer spring 3 (630), which hold the upper part of the head of the main support bolt (500), are placed and fixed to the building floor or surface concrete foundation to secure the spring box (200). The main support bolt (500) is held by fixing it to the lower support base (100) with four middle support fixing bolts (230) and fixing nuts (250), and the buffer is cushioned through buffer spring 2 (610) and front and rear supports (350). It is characterized by fastening spring 1 (600) and left and right supports (300) with two or more support nuts (510) and support washers (530) for secure fixation to the bottom plate of electrical equipment.

Figure 3 is a diagram showing the effect of the present invention during seismic vibration, showing the seismic vibration from the top and bottom.

As buffer spring 1 (600) and buffer spring 2 (610) absorb and the height of the spring decreases, the left and right supports (300) naturally move down to support the bottom of the electrical-related equipment structure, and the main support bolt (500) Some of it is also absorbed by the bolt support ball (670), buffer spring 4 (650), and buffer spring 3 (630).

The forward, backward, left and right impacts of earthquake vibration are caused by the head of the main support bolt (500) placed on the bolt support ball (670) placed between the support washers (690) in the spring box (200), buffer spring 3 (630), and buffer spring 4 (650). ) of the origin recovery force absorbs the impact as much as the clearance of the through hole of the spring box (200), and the front, rear, left and right impact displacement greater than that is caused by the double-sided pillars of the U-shaped lower support 100 in the vertical direction of the U-shaped left and right supports 300. The double-sided wings play a holding role, and the vertical double-sided wings of the U-shaped front and rear supports (350) with different 90-degree angles are held by a steel square spring box (200).

As a result, the vertical and horizontal movement displacement of seismic vibration is absorbed by the quadruple buffer spring and bolt support ball (670) to provide main support due to seismic vibration in electrical equipment such as high and low voltage distribution panels, motor control panels, distribution boards, and solar power junction boxes. By minimizing the displacement of the central axis of the bolt (500), electrical accidents are prevented in electrical equipment and stable operation is maintained.

Although the present invention has been described with the above examples, the present invention is not necessarily limited to these examples, and various modifications may be made without departing from the technical spirit of the present invention.

Therefore, the examples posted in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these examples.

100: lower support
200: spring box 230: fixing bolt
250: fixing nut
300: Left and right stands 350: Front and rear stands
500: main support bolt 510: support nut
530: Jiji washer
600: Buffer spring 1 610: Buffer spring 2
630: Buffer spring 3 650: Buffer spring 4
670: Bolt support ball 690: Support washer

Claims (3)

The earthquake-resistant device according to the present invention includes left and right stands (300) fixed to the bottom of electrical equipment such as switchboards (including switchboards, power boards, distribution boards, etc.) and solar power junction boxes, and a predetermined height distance from the left and right stands (300). In addition to being sandwiched between the lower pedestals 100 fixed to the ground while being separated, the upper surfaces of the left and right pedestals 300 are respectively mounted on four corners or more locations of the electrical-related equipment, and the left and right pedestals on which the electrical-related equipment are mounted ( In the earthquake-resistant device for electrical equipment that blocks and absorbs vibration or shock transmitted to electrical equipment by absorbing vibration or shock transmitted from the ground while supporting 300),
A U-shaped lower support (100) that is fixed from the ground or a building and serves as a foundation for fixing electrical equipment.
A main support bolt (500) forming a center that secures the bottom plate of electrical equipment from the lower support (100);
A support nut (510) and a support washer (530) to secure the bottom plate of electrical equipment to the main support bolt (500) and prevent it from coming off;
In order to fix and hold the main support bolt (500), a U-shaped front and rear support (350) located in the middle of the left and right supports (300) and the lower support (100), which are close to the bottom plate of the electrical structural equipment, are installed.
A steel square-shaped spring box (200) whose internal size is made with only enough room for vibration clearance on the head of the main support bolt (500), buffer spring 3 (630), and buffer spring 4 (650);
Four fixing bolts 230 and fixing nuts 250 of the spring box 200 that are fixed to the lower support 100 to fix the spring box 200;
The main support bolt (500) is penetrated, and the left and right supports (300) are U-shaped to support the bottom plate of electrical equipment directly below and support left and right vibration; ) Buffer spring 1 (600) located at the top of this earthquake-resistant device between the lower part and the front and rear supports (350) and through which the main support bolt penetrates the center of the spring;
An anteroposterior support (350) that supports the buffer spring 1 (600) from the lower part and supports the anteroposterior tilt;
Buffer spring 2 (610) located between the lower part of the front and rear supports (350) and the upper part of the spring box (200) and through which the main support bolt penetrates the center of the spring;
Inside the spring box (200), the main support bolt (500) contains the main support bolt (500), buffer spring 3 (630), which controls the up-down, front-back, left-right vibration above and below the head, buffer spring 4 (670) and the main support bolt (500), and a bolt support supported at the bottom of the head. It consists of a ball (670), a bolt support ball (670), and two support washers (690) at the top and bottom for returning the bolt to its original state.
Depending on the size, it is installed on 4 or more corners of electrical equipment such as high and low voltage switchboards, motor control panels, distribution boards, and solar connection boxes, so that the displacement of the central axis of the main support bolt (500) due to earthquake vibration can be elastically contracted, expanded, and restored to move up and down. An earthquake-resistant device for electrical equipment that prevents electrical accidents and maintains stable operation by preventing and minimizing vibrations forward, backward, left, and right. According to clause 1,
As the left and right supports (300) support the bottom of the electrical equipment structure and the left and right seismic vibrations from above and below are absorbed by the shock absorbing spring 1 (600) below, the height of the spring is reduced, and the buffer between the front and rear supports (350) and the spring box (200) is absorbed. Spring 2 (610) also absorbs vibration, and some of the upper and lower vibration of the main support bolt (500) is also absorbed by the bolt support ball (670), buffer spring 4 (650), and buffer spring 3 (630),
The forward, backward, left and right impacts of earthquake vibration are caused by the head of the main support bolt (500) placed on the bolt support ball (670) placed between the support washers (690) in the spring box (200), buffer spring 3 (630), and buffer spring 4 (650). ) of the origin recovery force absorbs the impact as much as the clearance of the through hole of the spring box (200), and a larger displacement is caused by the double-sided pillars of the U-shaped lower support 100 and the vertical double-sided wings of the U-shaped left and right supports 300. It plays a role of holding, and the vertical double-sided wings of the U-shaped front and rear supports (350) with different 90-degree angles are held by four buffer springs held by the steel square spring box (200) and the double wings of the two supports. An earthquake-resistant device for electrical equipment with a shock-absorbing structure. According to clause 1,
Between the bolt support ball (670), spring box (200), front and rear supports (350), and left and right supports (300) centered on the vertical main support bolt (500) in the lower support (100) attached to the ground or building. It is a structure made of stacked buffer springs, and the threaded part of the main support bolt (500) is only the end of the bolt at the top of the left and right supports (300) that fasten the support nut (510) and the support washer (530), and the remaining parts are buffer springs. It is composed of a main support bolt (500) with no thread bending so as not to interfere with the vertical movement, and the main support bolt (500) through hole of the left and right supports (300) and the front and rear supports (350) allows the main support bolt (500) to pass through. It is constructed with the minimum outer diameter that allows entry and exit without difficulty, and the through hole for the main support bolt (500) of the spring box (200) is sized to take into account the clearance that can be experienced during an earthquake or impact with the diameter of the main support bolt (500) column. An earthquake-resistant device for electrical equipment, characterized by arranging holes.