KR101282201B1 - Switchgear equipped with vibration prevention device - Google Patents

Abstract

PURPOSE: A switchboard including a vibration preventing device is provided to harden an internal surface of a saddle unit using a cementation method, thereby reducing manufacturing costs. CONSTITUTION: A cubicle includes a container and a switchboard. A vibration preventing device is installed in a lower part of the cubicle. The vibration preventing device absorbs vibration and impact. The vibration preventing device is formed with multiple vibration preventing supports. A ball saddle unit moves with a switchboard base.

Description

Switchgear Equipped with Vibration Prevention Device

The present invention relates to a switchboard having an anti-vibration device, and the vibration and shock generated by the earthquake are transmitted to the cubicle on the basis of the switchboard, so that the cubicle is also vibrated and shocked, but the switchboard is prevented by the vibration prevention device under the cubicle. Only the ball saddle and the saddle support part coupled to the base move by vibration, and the ball support part and the cubicle on the upper part are kept horizontal by their own weight, and the vibration or shock transmitted through the anti-vibration device is transmitted from the shock absorbing pad. It is attenuated so that the cubicle can operate normally even under vibration and shock, so that the life of the distributor can be improved and smooth distribution can be achieved. It is about.

In general, the switchboard is an electric facility that supplies industrial power to the users safely and is a device used for monitoring, controlling and protecting the electric system when power is sent from a power plant or substation to a customer.

Such a switchboard is composed of a structure that attaches and supports unit devices such as a breaker or a protective relay, and a collection of conductors that connect and connect the unit devices, and these various electric devices are safely insulated and housed in a rectangular steel enclosure .

However, since the switchboard is fixed on the ground, there is a problem that the enclosure provided in the switchboard may be deformed due to the vibration of the seismic wave when an earthquake occurs, or various electric devices installed in the switchboard may be damaged, there was.

In this case, there is a problem that power can not be stably supplied to a place where electric power is required, and electric shock or the like may occur due to a short circuit.

Accordingly, even if vibrations are applied to the switchboard due to an earthquake or the like, an earthquake-proof switchgear that does not deform the switchboard enclosure and damages the internal electrical equipment and prevents the switchboard from falling, thereby preventing safety accidents such as power outages, short circuits, and fire. This situation is desperately needed.

In addition, when an earthquake occurs, the vibration support applied to the switchboard by the elastic support under the switchboard is alleviated. However, some shock is transmitted to the equipment in the switchboard. It is necessary to switchboard equipped with vibration and impact prevention support that can maintain the performance of the whole switchboard by sufficiently alleviating the impact on the equipment installed on the mounting plate by installing the switchboard on the panel. Was done.

The seismic function switchboard disclosed in Korean Patent No. 10-1042577 includes an earthquake stopper for fixing the cubicle to a bottom surface; A tension member comprising a turnbuckle and a rope connected to the turnbuckle for tension control, the tension member being provided on a ring disposed on each of the cubicle and the wall to provide a tensile force opposite the cubicle; A wiring duct for protecting and twisting the wires in the cubicle; And a guide frame installed on the cubicle to protect the switchboard from impact applied by falling objects, wherein a plurality of insulators installed on the switchboard are detachably integrally installed on one panel fixed to the cubicle. The position of the switchboard is twisted or inclined due to the vibration or shock caused by the earthquake-like change such as the earthquake-like stopper and the ceiling, which is fixed to the fastening part using the bolt in the switchboard or the seismic stopper and the ceiling. In order to prevent the phenomenon and prevent damage to the power devices and electrical components mounted therein, the structure is different from the present invention.

The seismic type switchgear using a non-directional elastic support as disclosed in Patent 10-1038672 and the seismic type switchgear with a non-directional elastic support as disclosed in 10-1049407 are used to load the switchboard between the ground and the switchboard. In addition to the support, an elastic support for absorbing or cushioning vibrations or shocks transmitted from the ground is installed, and a rotation support is installed to support the switchboard. When an earthquake occurs, the rotation support is tilted, and the weight of the switchboard is applied to the elastic support. It is a structure that can protect the switchboard from external shocks such as earthquakes.

In addition, the 'earthquake-resistant switchgear using the electromagnetic force support and the non-directional elastic support' published in Patent 10-1054686, the coil spring mount provided on the non-directional elastic support is not subjected to external impact such as an earthquake by the electromagnetic force support. In general, it may not be deformed or lose its elasticity by being pressed by the load of the switchboard, but the electromagnetic force support uses the repulsive force between permanent magnets of the same polarity, and the upper cover provided on the non-directional elastic support is fixed. When only the nonlinear wire rope spring is installed, the wire elastic force and the bearing force weaken as time passes by the installation product load, and the nonlinear wire rope spring deflection phenomenon can be prevented.

However, the above patents 10-1038672 and 10-1049407 and 10-1054686 all have a problem that the device is complicated and the installation cost is high.

The present invention for solving the above problems is a cubicle consisting of an enclosure for forming an interior space of a predetermined size, and a distributor installed inside the enclosure and installed to distribute, control and protect the electrical system; It is installed on the lower part of the cubicle to prevent the cubicle from tilting due to vibration or shock and constitute a vibration preventing device that can absorb vibration or shock, the vibration preventing device is the lower corner of the enclosure and if necessary the corner It is made of a plurality of vibration prevention bar is installed between the and the corner, the vibration prevention member is to prevent the cubicle from being inclined by vibration or shock and the ball support portion of the lower portion; A shock absorbing pad installed at an upper portion of the ball support to absorb vibration or shock; A ball saddle portion in which a lower portion of the ball support portion is seated and which moves as a base of a distribution panel by vibration or shock; The ball is installed in the lower portion of the ball saddle to secure the ball saddle, the structure is composed of a saddle support portion coupled to the base of the switchboard is the cubicle is installed, the ball coupled to the base of the switchboard by the vibration prevention device of the lower part of the cubicle Only the saddle part and the saddle support part move by vibration, and the ball support part and the upper cubicle are horizontally maintained by their own weight, and the vibration or shock transmitted through the anti-vibration device is attenuated by the shock absorbing pad. The cubicle operates normally even under vibration and shock, improving the service life of the distributor and providing smooth distribution, thus providing a distribution panel equipped with a vibration preventing device that enables the distribution of electricity to the place where it is needed without an interruption. have.

The present invention includes a cubicle comprising an enclosure forming an interior space of a predetermined size, and a distributor installed inside the enclosure and installed to distribute, control, and protect the system by an electrical system; It is installed in the lower portion of the cubicle is composed of a vibration preventing device that can prevent the cubicle from tilting by vibration or shock and can absorb vibration or shock.

The anti-vibration device comprises a plurality of anti-vibration bars installed between the lower corner of the enclosure and, if necessary, the corner and the corner.

The anti-vibration bar may include a ball support part which prevents the cubicle from being inclined by vibration or impact and has a ball shape at a lower portion thereof; A shock absorbing pad installed at an upper portion of the ball support to absorb vibration or shock; A ball saddle portion in which a lower portion of the ball support portion is seated and which moves as a base of a distribution panel by vibration or shock; It is installed in the lower portion of the ball saddle to fix the ball saddle portion, the structure is composed of a saddle support portion coupled to the base of the switchboard is the cubicle is installed.

The ball support portion is the lower portion is inserted into the ball saddle portion and the ball portion for making a surface contact when the ball saddle moves by vibration or impact; It is coupled to the upper portion of the ball portion is coupled to the lower plate of the enclosure, it is composed of the upper plate portion is installed the shock absorbing pad on the top.

The ball saddle portion and the saddle portion on which the ball portion is seated; The ball holding plate is coupled to the top of the saddle portion to hold the ball portion does not fall out of the ball saddle portion is coupled to the saddle support portion.

The part where the ball part and the ball saddle contact each other is filled with oil to reduce friction and prevent sticking, and the outer surface of the ball part and the inner surface of the saddle where the ball part is seated are moved by the vibration of the ball saddle part. In order to reduce friction as much as possible, it has surface roughness beyond grinding process and surface hardening by cementation or induction hardening to give abrasion resistance.

The shock absorbing pad includes: a lower hard layer formed of a hard layer for long-term use to more effectively respond to shock mitigation and to prolong life; An elastic support layer formed on the lower hard layer to secure a supporting force; A cushion layer formed on the elastic support layer to maximize buffering force when an external force is applied; Is formed on top of the cushion layer is composed of an upper hard layer for long-term use of the shock absorbing pad is a structure produced by stacking four layers.

The ball holding plate portion is formed with an oil inlet for injecting oil between the ball portion and the saddle portion, and a support portion coupling portion for engaging with the saddle support portion.

An oil port capable of storing a certain amount of oil is formed in the lower portion of the bowl to eliminate frequent filling of the oil, and the upper plate portion is formed with an enclosure coupling portion coupled with the lower plate of the enclosure.

The saddle support part is provided with a holding plate portion coupling sphere for coupling with the ball holding plate portion, and a basic coupling sphere coupled with the distribution board base and the anchor bolt, and the holding plate portion coupling sphere is bolted to the ball holding plate portion and the saddle support portion A female thread is formed to join.

It is possible to solve the problem to be solved of the present invention by the switchboard with the vibration preventing device described above.

According to the switchboard to which the vibration preventing device of the present invention is attached, even if the switchboard base is moved by the vibration and shock generated by the earthquake, only the ball saddle and the saddle support part coupled to the switchboard base move and the cubicle is self-weighted. Since the distributor in the cubicle is kept vertical, it operates normally without being shocked, and the vibration or shock transmitted through the vibration preventing device is attenuated by the shock absorbing pad so that the switchboard operates normally even with vibration and shock. It can improve the service life of the electric power and smoothly the electric power distribution, and the effect of improving the life of electric equipment and electric power distribution where necessary without disconnection, the device has the advantage of simple and low production cost.

1 is an overall front view of a switchboard according to a switchboard having an anti-vibration device of the present invention;
Figure 2 is a full rear view of the switchboard according to the switchboard with the vibration damping device of the present invention
3 is a cross-sectional view of the vibration preventing device according to the switchboard to which the vibration preventing device of the present invention is attached.
Figure 4 is a cross-sectional view of the shock absorbing pad according to the switchboard with vibration damping device of the present invention
5 is a schematic view of the ball support unit according to the switchboard to which the vibration preventing device of the present invention is attached;
Figure 6 is a schematic view of the ball saddle portion according to the switchboard to which the vibration preventing device of the present invention is attached
Figure 7 is a schematic view of the saddle support part according to the switchboard attached to the vibration damping device of the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In addition, the terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or the operator, and the definition describes the "distribution board with vibration prevention device" according to the present invention. It should be made based on the contents throughout the specification.

Hereinafter, a preferred embodiment of the "distribution board with vibration prevention device" according to the present invention will be described in detail.

The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention.

1 is a front front view of a switchgear according to a switchboard with an anti-vibration device of the present invention, Figure 2 is a full rear view of the switchgear according to a switchgear with an anti-vibration device of the present invention, Figure 3 is a vibration preventing device of the present invention 4 is a cross-sectional view of the vibration preventing device according to the switchboard to which the apparatus is attached, and FIG. 4 is a cross-sectional view of the shock absorbing pad according to the switchboard to which the vibration preventing apparatus of the present invention is attached, and FIG. Figure 6 is a schematic view of the saddle portion of the ball saddle according to the switchboard with the vibration damping device of the present invention, Figure 7 is a schematic view of the saddle support part according to the switchboard with a vibration damping device of the present invention.

1 and 2, the switchboard with the vibration damping device of the present invention is provided with an enclosure 11 forming an internal space of a predetermined size, and installed in the enclosure 11, and various electrical equipments. A cubicle (1) composed of a distributor, such as a bus bar, an air circuit breaker, a wiring breaker, and a relay, installed to distribute, control, and protect the system; It is installed in the lower part of the cubicle (1) is composed of a vibration preventing device (2) to prevent the cubicle (1) is inclined or twisted by the vibration or shock, such as an earthquake and to absorb the vibration or shock.

The enclosure 11 generally has an outer shape and an outer frame having a rectangular parallelepiped shape; A plate cover including a door attached to the front and rear surfaces of the outer frame and an upper plate, a lower plate 111 and a side plate covering the outer frame in all directions; A frame support installed between the outer frames to support the outer frames; Is coupled to the left and right or top and bottom of the frame support is composed of a device mounting plate that the distributor is mounted directly or the adapter is installed on the front.

The vibration preventing device 2 prevents the cubicle 1 from being inclined by vibration or shock such as an earthquake, and serves to absorb vibration or shock of the earthquake or the switchboard itself.

The anti-vibration device 2 is composed of four lower corners of the enclosure 11 and, if necessary, a plurality of anti-vibration bars 2a installed between the corners and the corners.

According to the switchboard to which the vibration preventing device of the present invention is attached, the vibration damping device 2 is operated to be coupled to the switchboard switching base 3 even if the switchboard switching base 3 is moved by vibration and shock generated by an earthquake. Since only the ball saddle part 23 and the saddle support part 24 move and the cubicle 1 is vertically held by its own weight, the distributor in the cubicle 1 operates normally without being impacted, and also prevents the vibration. Vibration or shock transmitted through the device (2) is attenuated by the shock absorbing pad 22, the switchgear operates normally even in vibration and shock to improve the life of the distributor and smooth distribution, improve the life of electrical equipment There is an effect that can distribute the electricity where necessary without overdischarge.

As shown in FIG. 3, the anti-vibration stand 2a prevents the cubicle 1 from being inclined or twisted due to vibration or impact, and has a ball support 21 having a lower ball shape; A shock absorbing pad 22 installed on the ball support 21 to absorb vibration or shock; A ball saddle portion 23 on which a lower portion of the ball support portion 21 is seated, and moves like a switchboard base 3 by vibration or shock such as an earthquake; Is installed in the lower portion of the ball saddle (23) to fix the ball saddle (23), it is composed of a saddle support 24 coupled to the switchboard base (3) in which the cubicle (1) is installed. .

The ball support portion 21 has a lower portion is inserted into the ball saddle portion 23 and the ball portion 211 which makes a surface contact when the ball saddle portion 23 is moved by the vibration or shock such as an earthquake; The upper plate portion 212 is coupled to the upper portion of the ball portion 211 is coupled to the lower plate 211 of the enclosure 11, the shock absorbing pad 22 is installed on the upper portion.

The ball saddle portion 23 includes a saddle portion 231 on which the ball portion 211 is seated; Coupled to the top of the saddle portion 231 is configured to hold the ball portion 211 so as not to fall out of the ball saddle portion 23 and the ball holding plate portion 232 is coupled to the saddle support portion (24).

The portion where the ball portion 211 and the ball saddle portion 23 contact is preferably filled with oil to reduce friction and prevent sticking.

The outer surface of the ball portion 211 and the inner surface of the saddle portion 231 on which the ball portion 211 is seated have a surface roughness of grinding or more to minimize friction when the ball saddle portion 23 is moved by vibration. In order to provide abrasion resistance, it is preferable to harden the surface by cementation or induction hardening.

The shock absorbing pad 22 may include a lower hard layer 221 formed of a hard layer for long-term use to more effectively respond to shock mitigation and to prolong life; An elastic support layer 222 formed on the lower hard layer 221 to secure a supporting force; A cushion layer 223 formed on the elastic support layer 222 to maximize buffering force when an external force is applied; It is preferably a structure that is formed on the cushion layer 223 is composed of an upper hard layer 224 for long-term use of the shock absorbing pad 22 is laminated four layers.

As illustrated in FIG. 4, the shock absorbing pad 22 is installed on the upper portion of the ball support 21 to absorb vibrations or shocks of the switchboard, and more effectively responds to shock mitigation and extends life. A lower hard layer 221 made of a hard layer for long term use; An elastic support layer 222 formed on the lower hard layer 221 to secure a supporting force; A cushion layer 223 formed on the elastic support layer 222 to maximize buffering force when an external force is applied; It is formed on top of the cushion layer 223 is composed of an upper hard layer 224 for long-term use of the shock absorbing pad 22 is a structure produced by stacking four layers.

The lower hard layer 221 and the upper hard layer 224 are preferably a synthetic resin such as hard polyurethane having a certain strength and no brittleness.

The elastic support layer 222 may be used in the form of a plate shape by mixing the impurity, rubber chips, binder resin, and should be able to secure the support force with the cushion force when the external force action.

The cushion layer 223 may be a rubber powder, a vegetable resin may be mixed in the form of a plate, it should be able to maximize the buffering force during the external force action.

As shown in FIG. 5, the ball support part 21 prevents the cubicle 1 from being inclined due to vibration or shock, and has a lower ball shape, and a lower part of the ball saddle 23. A ball part 211 which is inserted and makes surface contact when the ball saddle part 23 is moved by an earthquake or the like; The upper plate portion 212 is coupled to the upper portion of the ball portion 211 is coupled to the lower plate 211 of the enclosure 11, the shock absorbing pad 22 is installed on the upper portion.

The ball portion 211 and the upper plate portion 212 may be coupled by welding or coupled by bolts.

In addition, the upper plate portion 212 and the shock absorbing pad 22 may be combined by an adhesive or other bonding method.

The lower portion of the ball portion 211 is formed with an oil port 2111 for storing a certain amount of oil in order to eliminate frequent filling of oil.

The upper plate portion 212 is formed with a plurality of enclosure coupling portion 2121 is coupled to the lower plate 111 of the enclosure (11).

The portion where the ball portion 211 and the ball saddle portion 23 are in contact with oil is filled to reduce friction and prevent sticking.

The outer surface of the ball portion 211 has a surface roughness of more than the grinding process in order to reduce the friction as much as the ball saddle portion 23 is moved by vibration, Cementation or Induction Hardening to give abrasion resistance It is preferable to perform surface hardening by the method.

It is preferable that the processing of the above grinding processing is the precision of surface roughness of top finish or ultra precision finish.

The grinding processing is a kind of cutting processing, and includes honing and super finishing, and uses a grinding machine for processing a workpiece while the grinding wheel rotates at high speed. When grinding with a grinding machine, the dimensions are precise, the surface is beautiful, and very hard shavings such as quenched steel can be easily trimmed. There are many kinds of grinding machines, such as cylindrical grinding machines for finishing shafts for general grinding, internal grinding machines for grinding inner surfaces, planar grinding machines for finishing inner surfaces and tapered surfaces, and the most widely used outer cylinders. The universal grinder which grinds the periphery or the inner surface of a hole is typical.

The cementation is siliconized by attaching Si, Cr, Al, etc. to the surface of the steel in a powder state, heating and diffusing them at a high temperature to penetrate the inside to make a corrosion-resistant alloy film. The heat treatment to make the film of Zn is the solid powder method and the gas method, and the chromizing method is to make the film of Cr. It has good corrosion resistance and abrasion resistance, and colorizing makes Al film. Withstands high temperature and oxidation Increase the scale resistance.

In the present invention, wear resistance is required, so chromizing is preferable.

Induction Hardening is a coil wound around a metal and sending a high frequency current to induce a current in the metal, and because of this current, the metal itself is heated by using resistance heating, which may cause a high temperature. When you rush to cut off the current and put in water or oil to cool. The electric current induced by the high frequency is concentrated only on the surface of the conductor by the skin effect, so that only the skin, not the entire conductor, can be cured. The method was developed by The Ohio Crankshaft Co. of the United States, so it's also called the Tocco method.

As shown in FIG. 6, the lower portion of the ball support portion 21 is seated and moves together with the switchboard base 3 by vibration or shock such as an earthquake.

The ball saddle portion 23 includes a saddle portion 231 on which the ball portion 211 is seated; Coupled to the top of the saddle portion 231 is configured to hold the ball portion 211 so as not to fall out of the ball saddle portion 23 and the ball holding plate portion 232 is coupled to the saddle support portion (24).

The saddle portion 231 and the ball holding plate portion 232 serves to prevent the ball holding plate portion 232 from falling out of the ball portion 211, thereby holding the ball portion 211 of the ball support portion 21. After inserting the plate portion 232 in the lower portion is preferably coupled to the coupling bolt 2324.

The saddle portion 231 is formed with a ball holding plate coupling sphere 2312 for coupling with the ball holding plate portion 232, the ball holding plate coupling sphere 2312 is formed with a female screw the coupling bolt 2324 Allow to tighten.

The ball holding plate portion 232 has an oil inlet 2321 for injecting oil between the ball portion 211 and the saddle portion 231, and a support portion coupling portion 2232 for coupling with the saddle support portion 24. And, the saddle portion coupler 2323 for coupling with the saddle portion 231 is formed.

The oil injection hole 2321 may be formed with an oil injection hole 2232 therein to allow oil to be discharged to the outside of the saddle surface 2311 of the saddle 231, and may be extended to the injection hole line 2231. It is desirable to facilitate oil injection.

That is, the portion where the ball portion 211 and the ball saddle portion 23 is in contact with the oil is preferably filled in order to reduce friction and prevent sticking.

The saddle surface 2311, which is an inner surface of the saddle portion 231 on which the ball portion 211 is seated, has a surface roughness of grinding or more to minimize friction when the ball saddle portion 23 is moved by vibration, In order to provide abrasion resistance, it is preferable to perform surface hardening by Cementation or Induction Hardening.

It is preferable that the processing of the above grinding processing is the precision of surface roughness of ▽▽▽ top finishing and ▽▽▽▽ of top finish as the finishing symbol.

The grinding process is the same as described above, and in the present invention, it is preferable to chromize because it requires abrasion resistance.

Induction hardening is also the same as described above.

As shown in FIG. 7, the saddle support part 24 is installed below the ball saddle part 23 to fix the ball saddle part 23, and the switchboard in which the cubicle 1 is installed. Is coupled to the foundation (3).

The saddle support part 24 has a holding plate part coupling sphere 241 for coupling with the ball holding plate portion 232, and a base coupler 242 coupled with the switchboard base 3 and the anchor bolt 31. Is formed.

A female screw 2411 is formed in the holding plate coupling portion 241 to couple the ball holding plate portion 232 and the saddle support portion 24 with bolts.

According to the switchboard to which the vibration preventing device of the present invention is attached, the vibration damping device 2 is operated to be coupled to the switchboard switching base 3 even if the switchboard switching base 3 is moved by vibration and shock generated by an earthquake. Since only the ball saddle part 23 and the saddle support part 24 move and the cubicle 1 is vertically held by its own weight, the distributor in the cubicle 1 operates normally without being impacted, and also prevents the vibration. Vibration or shock transmitted through the device (2) is attenuated by the shock absorbing pad 22, the switchgear operates normally even in vibration and shock to improve the life of the distributor and smooth distribution, improve the life of electrical equipment There is an effect that can distribute the electricity where necessary without overdischarge, the device has the advantage of simple and low production costs.

1: cubicle 11: enclosure
111: lower plate 2: vibration damping device
2a: vibration damper 21: ball support
211: ball portion 2111: oil pot
212: upper plate portion 2121: enclosure coupling portion
22: shock absorbing pad 221: lower hard layer
222: elastic support layer 223: cushion layer
224: upper hard layer 23: ball saddle
231: Saddle Division 2311: Saddle noodles
2312: ball holding plate portion coupling port 232: ball holding plate portion
2321: oil inlet 2322: support joints
2323: saddle joint 2324: coupling bolt
24: saddle support portion 241: holding plate coupling portion
2411: female thread 242: basic coupling sphere
243: ball seat seating groove 3: basic distribution panel
31: anchor bolt

Claims (4)

An enclosure 11 forming an internal space of a predetermined size, a cubicle 1 installed in the enclosure 11 and configured as a distributor for power distribution, control, and protection by an electric system;
In the switchboard which is provided in the lower portion of the cubicle (1) is composed of a vibration preventing device (2) that prevents the cubicle (1) from being inclined or twisted by vibration or shock and can absorb vibration or shock,
The anti-vibration device 2 is composed of four lower corners of the enclosure 11, and a plurality of anti-vibration stand (2a) is installed between the corner and the corner, if necessary,
The anti-vibration stand (2a) is to prevent the cubicle (1) is inclined by vibration or shock and the ball support portion 21 of the lower ball shape;
A shock absorbing pad 22 installed on the ball support 21 to absorb vibration or shock;
A lower portion of the ball support portion 21 is seated, and a ball saddle portion 23 moving together with the distribution board base 3 by vibration or shock;
Is installed in the lower portion of the ball saddle (23) to secure the ball saddle (23), consisting of a saddle support portion 24 coupled to the switchboard base (3) where the cubicle (1) is installed Switchgear with vibration damping device
The method of claim 1,
The ball support portion 21 is a lower portion is inserted into the ball saddle portion 23 and the ball portion 211 which makes a surface contact when the ball saddle portion 23 is moved by vibration or impact;
Is coupled to the upper portion of the ball portion 211 is coupled to the lower plate 211 of the enclosure 11, consists of an upper plate portion 212, the shock absorbing pad 22 is installed on the top,
The ball saddle portion 23 includes a saddle portion 231 on which the ball portion 211 is seated;
It is composed of a ball holding plate portion 232 coupled to the top of the saddle portion 231 to hold the ball portion 211 does not fall out of the ball saddle portion 23 and is coupled to the saddle support portion 24,
Where the ball portion 211 and the ball saddle portion 23 is in contact with the oil is filled to reduce friction and prevent sticking,
The outer surface of the ball portion 211 and the inner surface of the saddle portion 231 on which the ball portion 211 is seated have a cementation to reduce friction and give abrasion resistance when the ball saddle portion 23 is moved by vibration. Switchboard with vibration damper, characterized in that surface hardening treatment by Cementation or Induction Hardening
The method of claim 1,
The shock absorbing pad 22 includes a lower hard layer 221 made of a hard layer in order to counteract the shock and extend the life of the shock absorbing pad 22;
An elastic support layer 222 formed on the lower hard layer 221 to secure a supporting force;
A cushion layer 223 formed on the elastic support layer 222 to improve buffering force when an external force is applied;
Is formed on top of the cushion layer 223 is composed of an upper hard layer 224 for long-term use of the shock absorbing pad 22 is attached to the vibration preventing device, characterized in that the structure is produced by stacking four layers Switchboard
The method of claim 2,
The ball holding plate portion 232 has an oil inlet 2321 for injecting oil between the ball portion 211 and the saddle portion 231, and a support portion coupling portion 2232 for coupling with the saddle support portion 24. Is formed,
The lower portion of the ball portion 211 is formed with an oil port (2111) for storing a certain amount of oil in order to solve the frequent filling of oil,
The upper plate portion 212 is formed with a plurality of enclosure coupling portion 2121 is coupled to the lower plate 111 of the enclosure 11,
The saddle support part 24 has a holding plate part coupling sphere 241 for coupling with the ball holding plate portion 232, and a base coupler 242 coupled with the switchboard base 3 and the anchor bolt 31. Formed,
The switchboard with vibration damping device is characterized in that the female screw 2411 is formed to couple the ball holding plate portion 232 and the saddle support portion 24 with bolts.

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