KR20190009394A - Distribution Board with Earthquake-Proof Device using Leaf Spring(High-voltage Switchgear, Low-voltage Switchgear, Motor Control Center, Cabinet Panel) - Google Patents

Abstract

The present invention relates to a switchgear (high-pressure panel, low-pressure panel, motor control panel, and distribution panel) having a seismic isolation device using a plate spring, which has a simple structure to be easily manufactured, and can effectively absorb seismic and life vibrations that act in the vertical and horizontal directions. To this end, according to the switchgear having a seismic isolation device using a plate spring of the present invention, the seismic isolation device comprises: a lower body including a body portion which has a partition plate vertically partitioning an accommodation space while having the accommodation space of a predetermined size formed therein, and a plurality of fixing portions which are provided on a lower outer surface of the body portion; an upper body provided on an upper portion of the lower body and having a guide portion which is inserted into an upper side of the accommodation space at a predetermined depth with respect to the partition plate; an elastic spring of a predetermined diameter positioned between an upper surface of the partition plate and the bottom surface of the upper body, and elastically supporting the upper body; a plate spring assembly provided in an upper side of the accommodation space with respect to the partition plate in order to elastically support an outer surface of the guide portion radially; and a fastening member including a fixing plate in a disc shape which is provided in a lower side of the accommodation space with respect to the partition plate, a connection bolt which is provided to pass through the guide portion and the fixing plate, and a connection nut which is assembled to the connection bolt.

Description

Distribution Board with Earthquake-Proof Device using Leaf Spring (High-voltage Switchgear, Low-voltage Switchgear, Motor Control Center, Cabinet Panel) )}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchboard (high-pressure, low-voltage, motor control panel, and distribution board) equipped with a seismic resistant device using leaf springs, (High voltage, low voltage, and high voltage) equipped with a seismic isolation device using a leaf spring which is provided at a lower portion of the lower portion of the main body , An electric motor control board, a distribution board).

In general, switchgear is a device used to monitor, control and protect power systems. It refers to aggregates of unit devices, supporting structures, and wires for connecting them. And a plurality of panels for controlling the facilities.

If vibrations or shocks due to external factors such as crustal fluctuation or explosion are applied to such a switchboard, electrical components such as power equipment, wiring and protective relay installed inside the control panel may be damaged, There is a risk of interruption or fire.

Therefore, it is important to secure the safety of buildings and structures due to damage caused by frequent earthquakes. Therefore, the earthquake-resistant design standards for the switchboards installed in the buildings are gradually strengthened. Accordingly, the earthquake- Has been developed.

[0003] A conventional switchboard having a seismic function of Patent Document No. 0939475 (hereinafter referred to as Patent Document) is disclosed in the related art.

The seismic resistant means includes a bearing insertion hole into which the automatic alignment bearing is inserted and is fixed to the upper surface of the horizontal plate of the floor angle. A bearing support case; And a bearing stop ring is installed at the lower end portion of the self-aligning bearing. The lower end portion is fitted to the bearing inserting hole of the bearing supporting case together with the self-aligning bearing and the upper end is inserted through the bolt passing hole drilled in the support angle, A support bolt fixed to the horizontal plate of the support angle; The support bolt is inserted into the bearing insertion hole of the bearing support case in a state where the inner ball is coupled to the lower end of the support bolt, and when the impact is applied in the horizontal direction from the outside, A self-aligning bearing that tilts in an opposite direction to which the impact force is applied and allows the compression spring to absorb the impact force; And the support bolt is fixed to the horizontal plate of the bottom angle with the bearing support case through several bolts from the upper surface of the bearing support case, So as not to be detached from the cover; A supporting bolt and a bearing supporting case between the upper surface of the horizontal plate of the bottom angle and the bottom surface of the horizontal plate of the supporting angle; And a compression spring installed to surround the outer side of the lid to absorb vibrations and shocks externally applied.

However, when a shock is applied in the horizontal direction, the support bolt moves at a predetermined angle in the bearing support case. In this case, the bottom angle and the support angle collide with each other to cause wear and breakage, There is a problem that the bottom angle collides with the supporting angle and noise is generated.

Therefore, it is required to develop a power switchgear (high-pressure panel, low-pressure panel, motor control panel, and distribution panel) provided with a seismic device capable of effectively absorbing vibrations acting in the horizontal and vertical directions while being simple in structure.

KR 10-0939475 B1 (2010. 01. 22.) KR 10-10-2018-0036926 A (October 28, 2018) KR 10-1349791 B1 (2014. 01. 03.) KR 10-1648136 B1 (Aug. 08, 2016) KR 10-2015-0121405 A (Oct. 29, 2015)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a seismic isolation system, (High-pressure panel, low-pressure panel, motor control panel, and distribution panel) provided with an earthquake-proof device using a leaf spring capable of effectively absorbing earthquake vibration.

In order to solve the above-mentioned problems, a switchboard with an earthquake-proof apparatus using leaf springs according to the present invention is characterized in that the earthquake-proof apparatus comprises a body portion having a space for accommodating a predetermined size therein, A lower body including a plurality of fixing portions provided on a lower outer side surface of the body portion; An upper body provided on an upper portion of the lower main body and having a guide portion inserted into an upper portion of the accommodation space at a predetermined depth with respect to the partition plate; An elastic spring having a predetermined diameter and positioned between an upper surface of the partition plate and a bottom surface of the upper body to elastically support the upper body; A leaf spring assembly installed on an upper side of the containing space with respect to the partition plate so as to elastically support an outer surface of the guide portion in a radial direction; And a coupling member composed of a connection plate and a connecting bolt installed to penetrate through the guide and the fixing plate and a connection nut assembled to the connection bolt, Wherein the partition plate is formed with a through hole having a diameter larger than a diameter of the connection bolt so as to secure a clearance space in which the connection bolt is movable in the horizontal direction, A cylindrical spring housing having a diameter; A plurality of first leaf springs installed inside the spring housing, the first leaf springs having a center portion contacting an outer surface of the guide portion and having opposite ends contacted with an inner surface of the spring housing; And a plurality of second leaf springs which are formed inside the spring housing so as to be in contact with the inner surface of the spring housing and have both ends thereof interposed between and fixed to the first leaf spring, .

Further, the present invention is characterized in that a fitting portion is partially formed on both end portions of the first and second leaf springs so as to have a predetermined width and height and is assembled with each other.

Further, the present invention is characterized in that the first and second leaf springs are formed into arc shapes having the same diameter, and a plurality of the first and second leaf springs are assembled together so as to form a wavy shape along the inner surface of the spring housing.

In addition, the present invention is further characterized in that a seating portion having a predetermined width is formed on the bottom surface of the spring housing to prevent the plurality of first and second leaf springs from being separated from each other.

According to the present invention, it is possible to reduce the manufacturing cost by simplifying the structure, and to absorb vibrations such as vibrations acting in the vertical direction and earthquakes acting in the horizontal direction through the elastic spring and leaf spring assemblies, Impact and vibration can be effectively reduced.

In addition, since the upper and lower bodies are assembled through a fixing plate, a connecting bolt, and a connecting nut, assembly and disassembly are facilitated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing an example of a switchboard having an earthquake-proof apparatus using a leaf spring according to the present invention; FIG.
2 is a perspective view showing an example of a seismic resistant device using a leaf spring according to the present invention.
Figure 3 is an exploded perspective view of Figure 2;
Fig. 4 is a sectional view of Fig. 2; Fig.
5 is a perspective view showing an example of a lower main body according to the present invention.
Fig. 6 is a sectional view of Fig. 5; Fig.
7 is a sectional view showing an example of an upper body according to the present invention.
8 is a perspective view showing an example of a leaf spring assembly according to the present invention.
Fig. 9 is an exploded perspective view of Fig. 8; Fig.
10 is an exploded perspective view showing an example of first and second leaf springs according to the present invention.
11 (a) and 12 (b) are views showing an example in which the leaf spring assembly according to the present invention is deformed by the guide portion of the upper body.
13 is a view showing an example in which an outer housing and an elastic plate are installed in a leaf spring assembly according to the present invention.
14 is a view illustrating an example in which a switchboard provided with an earthquake-proof apparatus using leaf springs according to the present invention is operated in response to a vertical vibration.
15 is a view showing an example in which a switchboard provided with an earthquake-proof apparatus using a leaf spring according to the present invention is operated corresponding to a vibration occurring in a horizontal direction.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a switchboard (high-pressure, low-voltage, motor control panel, and distribution board) provided with an earthquake-proof device using leaf springs that can easily absorb life and earthquake vibrations, 1 to 4, the present invention includes a lower main body 10, an upper main body 20, an elastic spring 30, a leaf spring assembly 40, and a fastening member 50, .

The lower main body 10 is fixed to the anchor bolt 2A provided on the paper surface 2 and is installed such that the upper main body 20 described later is elastically supported.

As shown in FIGS. 5 and 6, the lower body 10 includes a body portion 11 having a cylindrical shape and having a predetermined length in the up and down direction, And includes a plurality of fixing portions 12 to be installed.

Here, the body part 11 is provided with a receiving space 11A having a predetermined size along the inner side, and a partition plate 11B having a predetermined thickness is provided so as to divide the receiving space 11A up and down.

At this time, in order to secure a clearance of a predetermined width so that the connecting bolt 52 of the fastening member 50, which will be described later, can move in the horizontal direction, the partition plate 11B is formed with a through hole having a diameter larger than the diameter of the connecting bolt 52 A hole 11B 'is formed.

In addition, a long hole 12A having a predetermined length is formed in the fixing part 12 so that it can be assembled and adjusted appropriately according to the position of the anchor bolt 2A.

On the other hand, one end of the elastic spring 30, which will be described later, is inserted to a predetermined depth in the upper space of the accommodation space 11A in which the upper and lower spaces are partitioned by the partition plate 11B so that the elastic spring 30 is not moved And fixes the plate spring assembly 40 at the same time.

The elastic spring 30 is compressed on the lower space of the accommodation space 11A so that the fixing plate 51 and the connecting nut 53 of the fastening member 50, which will be described later, And functions to form a spaced space.

The upper main body 20 is installed on the upper portion of the lower main body 10 and is fixedly assembled through the bottom plate 1A of the switchboard 1.

7, the upper body 20 includes a base portion 21 of a predetermined diameter having a circular plate shape, a guide portion 22 formed to protrude downward by a predetermined length from a central bottom surface of the base portion 21, ).

Here, the base portion 21 is provided with a fixing bolt 21A having a predetermined length so as to penetrate the bottom plate 1A. The fixing bolt 21A is provided on the upper surface of the bottom plate 1A, 20 are fixed to the switchboard 1 are assembled.

A bolt insertion hole 22A having a predetermined diameter is formed in the guide portion 22 so that the connection bolt 52 of the fastening member 50 is inserted.

The outer circumferential surface of the guide portion 22 is inserted into the center of the plate spring assembly 40 to be described later And is elastically supported by a plurality of leaf springs 42.

The elastic spring 30 elastically supports the upper main body 20 in the vertical direction.

3 and 4, the elastic spring 30 is inserted into the space formed by the partition plate 11B in the upper space of the receiving space 11A of the lower main body 10, And the upper portion is installed so as to be in close contact with the bottom surface of the base portion 21 of the upper body 20. [

The leaf spring assembly 40 is provided in a space between the inner side surface of the elastic spring 30 and the outer side surface of the guide portion 22 to elastically support the guide portion 22 in the horizontal direction.

8 and 9, the leaf spring assembly 40 includes a cylindrical spring housing 41 having a predetermined diameter to be inserted into the inside of the elastic spring 30, A plurality of first leaf springs 42 that are formed in an arc shape such that the middle portion thereof is in contact with the outer surface of the guide portion 22 and both ends of the leaf spring 41 are in contact with the inner surface of the spring housing 41, A plurality of second leaf springs 43 formed at an inner side of the spring housing 41 so as to be in contact with the inner surface of the spring housing 41 and having both ends intersecting with the first leaf spring 42, .

At this time, a seating portion 41A having a predetermined width is formed on the bottom surface of the spring housing 41 and a plurality of first plate spring 42 and second plate spring 43 are assembled by the seating portion 41A And is prevented from being displaced.

As shown in FIG. 10, the first leaf spring 42 is formed of a circular arc plate having a predetermined diameter. The first leaf spring 42 has a fitting portion 42A having a predetermined length vertically below both sides, 43 are formed so as to have an arc shape opposite to the first leaf spring 42 so that the fitting portions 42A of the first leaf spring 42 are inserted into upper portions of the fitting portions 42a, 43A are formed.

The first leaf spring 42 is fixed at its both ends by the plurality of second leaf springs 43 so that the intermediate portion of the first leaf spring 42 is engaged with the guide portion 22, A sufficient supporting force is exerted on the guide portion 22 so that the elastic restoring force of the first and second leaf springs 42 and 43 simultaneously acts to return the guide portion 22 to the originally installed position do.

At this time, the first and second leaf springs 42 and 43 are formed so as to have arc shapes of the same size and then connected in a wavy shape so that the inner surface of the spring housing 41 and the outer surface of the guide portion 22 are alternately As shown in FIG.

Meanwhile, the spring housing 41 is configured to receive the first and second leaf springs 42 and 43, and at the same time, the lower side of the elastic spring 30 is deformed excessively in the horizontal direction by the vibration generated in the horizontal direction. But also to maintain the shape so as not to be deformed.

13, an outer housing 44 is provided at a predetermined distance from the outer surface of the spring housing 41 and a semicircular shape having a predetermined diameter is formed between the spring housing 41 and the outer housing 44 A plurality of elastic plates 45 are formed so as to be alternately and repeatedly formed in a wavy shape. When vibration is generated in the horizontal direction by the outer housing 44 and the elastic plate 45, The vibrations and impact transmitted to the guide portion 22 are absorbed first and the vibration and impact are absorbed by the elastic plate 45 as a result of the deformation of the upper and lower bodies 42 and 43. As a result, The vibrations and impact transmitted to the positioned switchboard 1 are further reduced.

When the lower main body 10 is moved in accordance with the earthquake vibration acting in the horizontal direction by the leaf spring assembly 40 constructed as described above, the inner surface of the receiving space 11A and the outer surface of the guide portion 22 The first and second leaf springs 42 and 43 are pressed and deformed so that the distance in which the upper main body 20 is moved in the horizontal direction is reduced relative to the lower main body 10, The elastic restoring force of the upper and lower main bodies 42 and 43 restores the original position where the lower main body 10 and the upper main body 20 are concentric with each other. As a result, the intensity of the vibration acting in the horizontal direction on the ground is reduced, 1) so that the internal structure of the switchboard 1 is protected from vibration such as an earthquake.

The fastening member 50 restrains the lower main body 10 and the upper main body 20 from being separated from each other and allows the lower main body 10 and the upper main body 20 to move vertically and horizontally by a predetermined width Connection.

3, the fastening member 50 includes a fastening plate 51 installed on the lower side of the accommodation space 11A with respect to the partition plate 11B and a fastening plate 51 fastened to the guide portion 22 and the fastening plate 51 A connecting bolt 52 having a predetermined length to be inserted therethrough and a connecting nut 53 assembled to the connecting bolt 52.

4, the edge portion of the fixing plate 51 is formed to be inclined at a predetermined angle so that the height of the edge portion is relatively lower than that of the center portion. As a result, vibration occurs in the horizontal direction, When the lower body 10 and the upper body 20 are positioned so as to be shifted by a predetermined width from each other, the inclined surface portion of the fixing plate 51 and the lower surface of the partition plate 11B are brought into contact with each other, The resilient restoring force of the resilient spring 30 and the resilient restoring force of the leaf spring assembly 40 are simultaneously applied to the lower main body 10 and the upper main body 10B ' The main body 20 can be easily returned to the originally installed position concentric with the main body 20.

With the above-described structure, in the switchboard having the earthquake-proof apparatus using the leaf spring according to the present invention, life vibrations generated in the vertical direction are transmitted to the upper body 20 The vibration generated in the horizontal direction due to an earthquake or the like is absorbed by the leaf spring assembly 40 as shown in FIG. 15 and is transmitted to the upper main body 20, The width of the movement of the main body 20 in the horizontal direction is reduced, and as a result, it is effectively prevented that the main body 1 is excessively moved in the horizontal direction due to vibration such as an earthquake and is broken.

As described above, the present invention can reduce the manufacturing cost due to its simple structure, absorbs vibrations such as vibrations acting in the vertical direction and earthquakes acting in the horizontal direction through the elastic spring and leaf spring assemblies, The impact and the vibration transmitted to the vehicle body are effectively reduced.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. It is to be understood that the scope of the present invention should not be interpreted as being limited only by the scope of the present invention and that the scope of the present invention should not be construed to be interpreted to limit the scope of the present invention. .

1: switchgear 1A: bottom plate
2: ground surface 2A: anchor bolt
3: Seismic device 10:
11: body portion 11A: accommodation space
11B: partition plate 11B ': through-hole
12: Fixing portion 12A:
20: upper body 21: base portion
21A: Fixing bolt 21B: Fixing nut
22: guide portion 22A: bolt insertion hole
30: elastic spring 40: leaf spring assembly
41: spring housing 41A: seat part
42: first leaf spring 42A:
43: second leaf spring 43A:
44: outer housing 45: elastic plate
50: fastening member 51: fixed plate
52: connecting bolt 52: connecting nut

Claims (4)

In a switchboard (1) provided with an earthquake-proof device (3) on its bottom surface for absorbing earthquake vibration,
The earthquake-proof device (3)
A body portion 11 having a predetermined size accommodating space 11A formed therein and having a partition plate 11B for vertically partitioning the accommodating space 11A; A lower main body 10 including a plurality of fixing portions 12;
An upper main body 20 provided at an upper portion of the lower main body 10 and having a guide portion 22 inserted into an upper portion of the accommodation space 11A at a predetermined depth with respect to the partition plate 11B;
An elastic spring 30 having a predetermined diameter and positioned between the upper surface of the partition plate 11B and the bottom surface of the upper body 20 to elastically support the upper body 20;
A leaf spring assembly 40 installed on the upper side of the accommodation space 11A with respect to the partition plate 11B so as to elastically support the outer surface of the guide portion 22 in a radial direction; And
A circular fixing plate 51 provided on the lower side of the accommodation space 11A with respect to the partition plate 11B and a connection bolt 52 installed to penetrate the guide portion 22 and the fixing plate 51 And a connection nut (53) assembled to the connection bolt (52);
Lt; / RTI >
A through hole 11B 'having a diameter larger than the diameter of the connecting bolt 52 is formed in the partition plate 11B so as to secure a clearance for moving the connecting bolt 52 in the horizontal direction,
The leaf spring assembly (40)
A cylindrical spring housing 41 having a predetermined diameter to be inserted into the elastic spring 30;
The spring housing 41 is provided inside the spring housing 41. The spring housing 41 has a center portion contacting the outer surface of the guide portion 22 and having both ends contacted with the inner surface of the spring housing 41, A leaf spring (42); And
The spring housing 41 is formed inside the spring housing 41 so that its middle portion is in contact with the inner surface of the spring housing 41. Both ends of the spring housing 41 intersect with the first leaf spring 42 to have a predetermined width, A plurality of second leaf springs 43;
And an earthquake-resistant apparatus for earthquake-resistant use.
The method according to claim 1,
At both end portions of the first and second leaf springs 42 and 43,
And a fitting portion (42A, 43A) having a predetermined width and a height are partially cut and assembled with each other to form a fitting portion (42A, 43A).
The method of claim 2,
The first and second leaf springs (42, 43)
Wherein the spring housing (41) is formed in a shape of arc having the same diameter, and a plurality of the spring housings (41) are assembled together so as to have a wavy shape along the inner surface of the spring housing (41).
The method according to any one of claims 1 to 3,
And a seating portion 41A having a predetermined width is formed on the bottom surface of the spring housing 41 to prevent the first and second leaf springs 42 and 43 from being separated from each other. Switchgear with earthquake - proof device.

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