KR102534106B1 - Quake-proof suspension device - Google Patents

Abstract

The present invention relates to an earthquake-resistant suspension device having a hanger structure for damping earthquake vibration, comprising: a suspension part installed on a ceiling fixing plate and extending downwardly; It consists of a connecting part, which is a member that connects the lower part of the suspension part and the suspension part. The connection part is composed of a suspension-side bracket installed on the suspension part and a suspension-side bracket fixed to the suspension part. An earthquake-resistant suspension device having a suspension structure that can stably withstand the vibration of an earthquake so that it can be stably maintained against the vibration of an earthquake even though the suspension installed indoors is formed in a long form by further including a buffer unit that is connected in a relatively variable manner. want to provide

Description

Seismic suspension device {Quake-proof suspension device}

The present invention relates to a suspension device for supporting a conduit or cable tray suspended from a ceiling or a similar wire or lighting fixture, and more particularly, to a seismic suspension device having a hanger structure for damping earthquake vibration.

In normal buildings and facilities, cables for lighting, communication, or power distribution are sometimes embedded in walls, but trays, conduits, wiring ducts, or chamber-type devices or structures that support these cables or lighting fixtures are suspended from the ceiling. It is often installed with

These trays, conduits, or wiring ducts are formed long, and are often installed in a form in which several prongs are connected to each other, so that suspension members are used at regular intervals so that they can be suspended in an orderly manner on a ceiling structure.

However, since a few years ago, the number of earthquakes has increased in Korea, especially in the Yeongnam region. In particular, an earthquake of magnitude 4.0 occurred in Uljin-gun, Gyeongsangbuk-do on April 22, 2019, and an earthquake of 3.9 in Sangju-si, Gyeongsangbuk-do on July 21. On October 27, a magnitude 3.4 earthquake occurred in Changnyeong-gun, Gyeongsangnam-do.

In particular, ceiling lighting equipment such as lighting fixtures are not installed in a form firmly attached to the ceiling structure, but are installed in a form suspended downward for a certain length, so when an earthquake occurs, there is a concern that they may be easily damaged if there is no strength and shock absorbing means above a certain level. there is

Light emitting means such as power supply and LED elements can be installed on communication trays, conduits, or lighting raceways, so if damage occurs due to earthquake vibrations, it can lead to accidents such as short circuits or short circuits, and also structures caused by vibrations. There is a risk of electric shock due to damage to the connection between the terminals, so it is necessary to minimize the effects of vibrations caused by earthquakes.

In addition, since a luminaire installed to illuminate a large indoor area such as a raceway is manufactured to be long, it is necessary to prevent a phenomenon in which the luminaire fluctuates greatly in a horizontal direction in an earthquake situation. At this time, the damage to the lighting fixture can be minimized only when the shaking phenomenon is prevented and the transmission of vibration is also damped.

However, at present, technology for seismic means for maintaining a stable installation state of suspension structures such as communication trays, conduits, or light fixture raceways has not been developed in earnest.

Registered Patent Publication No. 10-1776026

Therefore, the present invention is an earthquake-resistant suspension device having a suspension structure that can stably withstand earthquake vibration so that a suspension device that supports a conduit, cable tray, or similar wire or lighting fixture suspended from the ceiling can be stably maintained against earthquake vibration. want to provide

An earthquake-resistant suspension device according to the present invention for achieving this object is a ceiling fixing plate fixed to the ceiling, a suspension part fixed to the ceiling fixing plate and made of a columnar rigid material member extending downward toward the bottom, It consists of a suspension in the form of a cable tray, conduit, or chamber, and a connecting part that is a member that connects the lower part of the suspension to the suspension. and a shock absorber for connecting the suspension side bracket and the suspension side bracket in a relatively variable manner within a certain range.

The buffer unit preferably includes a bolt passing through and connecting both the suspension side bracket and the suspension side bracket, and a buffer spring surrounding the bolt.

The spring is preferably composed of a suspension-side spring installed between the suspension-side bracket and one end of the bolt, and a suspension-side spring installed between the suspension-side bracket and the other end of the bolt, and one end and the other end of the bolt are each a bolt head or The separation prevention nut is fastened to prevent the suspension side or the suspension side spring from being separated, so that the suspension side bracket and the suspension side bracket can be closely attached to each other due to the elastic force of the suspension side spring and the suspension side spring.

In this case, the suspension-side spring and the suspension-side spring may preferably be manufactured to have different modulus of elasticity from each other.

In particular, since the buffer spring is preferably surrounded by an outer tube made of a flexible material, the elastic period of the spring is disturbed and resonance can be prevented.

On the other hand, the rigid material member constituting the suspension part is preferably composed of a cylinder and a piston, and one of the cylinder and the piston is fixed to the ceiling fixing plate and the other is operated by a piston so that the length of the suspension part can be varied, and the piston A stopper for stopping the piston operation may be installed between the and the cylinder.

At this time, the stopper may be preferably formed of a long hole formed in the body of the piston along the longitudinal direction of the piston, a through hole formed in the body of the cylinder, and a fastening member capable of passing through the through hole and the long hole at the same time. .

Meanwhile, the suspension-side bracket may preferably include a top plate in close contact with the suspension-side bracket, and side plates extending vertically downward on both sides of the top plate to cover part or all of the side surface of the suspension.

In this case, the suspension-side bracket may further include a seismic plate having grooves through which the side plates pass through and installed in close contact with the upper surface of the suspension.

The seismic suspension device according to the present invention is stable against earthquake vibration so that conduits, cable trays, lighting fixtures and other ceiling installation facilities installed on the ceiling of a building or facility can be stably maintained against earthquake vibration even though they are suspended in an elongated form. It has the effect of having a suspension structure that can withstand it.

1 is a front view of an earthquake-resistant suspension device according to the present invention;
Figure 2 is a lower perspective view of the suspension part in Figure 1;
3 is an upper perspective view of the suspension part in FIG. 1;
Figure 4 is an exploded perspective view of Figure 2;
Figure 5a is a front view of the shock absorber shown in Figure 3;
Figure 5b is a front view of the compressed state of Figure 5a;
6a to 6c are front views showing the action of the seismic plate;

Specific structural or functional descriptions presented in the embodiments of the present invention are merely exemplified for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms. In addition, it should not be construed as being limited to the embodiments described in this specification, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

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

As briefly shown in FIG. 1 , the seismic suspension device according to the present invention is composed of a suspension part 20, a suspension material 10, a connection part 30, and a buffer part 40.

The suspension part 20 is composed of a ceiling fixing plate 25 fixed to the ceiling and a column-shaped rigid material member fixed to the ceiling fixing plate 25 and extending downward.

The suspension 10 is a facility in the form of a long cable tray, conduit, or chamber. Here, the cable includes lighting fixtures widely known as conventional raceways as well as lighting fixtures, or lightway lighting fixtures integrated with wiring ducts. The light-way lighting fixture 10 is manufactured so that not only the power cable but also the communication cable is long embedded inside the chamber shape so that a wired communication network does not need to be separately installed. In addition, the light source may include a fluorescent light as well as a recently used LED light source.

The connection part 30 is a member that connects the lower part of the suspension part 20 and the upper part of the suspension part 10. In particular, as shown in FIG. 4 , the connection part 30 includes a hanging part side bracket 31 installed on the hanging part 20 and a hanging part side bracket 32 fixed to the hanging part 10 . Here, the suspension part side bracket 31 and the suspension part side bracket 32 are installed with a buffer 40 that connects the suspension part side bracket 31 and the suspension part side bracket 32 relatively variably within a certain range, so that vibration is absorbed when vibration caused by an earthquake or other causes occurs, and the connection part 30 ) can prevent accidents that may occur due to damage.

More specifically, as shown in FIG. 5A, the buffer unit 40 includes a bolt 41 that penetrates and connects both the suspension side bracket 31 and the suspension side bracket 32, and a buffer spring surrounding the bolt 41 ( 42,43).

At this time, the buffer springs 42 and 43 are installed between the suspension side spring 42 installed between the suspension side bracket 31 and one end of the bolt 41, and between the suspension side bracket 32 and the other end of the bolt 41. It consists of a suspension-side spring 43, and a bolt head or an upper nut 45 or a lower nut 48 for separation prevention is fastened to one end and the other end of the bolt 41, respectively, so that the suspension-side or suspension-side spring 42 , 43) is prevented from being separated, and the suspension-side bracket 31 and the suspension-side bracket 32 can come into close contact with each other due to the elastic force of the suspension-side spring 42 and the suspension-side spring 43.

That is, the bolt 41 may be a stud bolt as shown in FIG. 4 or may have a bolt head attached to either side. In the case of a stud bolt, as shown in FIG. 4, the upper nut 45 and the lower nut 48 are fastened to the upper and lower parts of the bolt 41, respectively, so that the suspension side and suspension side springs 42 and 43 are separated this can be prevented.

As shown in FIG. 5A, the suspension-side spring 42 and the suspension-side spring 43 exert an elastic force in a direction in which the suspension-side bracket 31 and the suspension-side bracket 32 come into close contact with each other in the absence of vibration.

Then, when vibration occurs, as shown in FIG. 5B, a gap due to the vibration may be generated between the suspension-side bracket 31 and the suspension-side bracket 32, and the suspension-side spring 42 and the suspension side spring 43 are compressed. Accordingly, since the vibration transmitted from the ceiling is absorbed by the buffer 40 between the suspension side bracket 31 and the suspension side bracket 32, transmission of vibration to the suspension object 10 is extremely weak.

However, when the state of FIG. 5A and the state of FIG. 5B are repeated according to the vibration period of the suspension-side spring 42 and the suspension-side spring 43, the resonance period of the suspension-side spring 42 and the suspension-side spring 43 As they are matched, the connection between the suspension side bracket 31 and the suspension side bracket 32 gradually becomes unstable, and then breakage occurs, which may lead to an accident.

In order to prevent this phenomenon, in the embodiments of FIGS. 5A and 5B , the suspension side spring 42 and the suspension side spring 43 may be manufactured to have different moduli of elasticity. As the elasticity period between the suspension-side spring 42 and the suspension-side spring 43 is similar, the resonance period is reached within the shortest time from occurrence of vibration, and the risk of accidents is high. Therefore, the hanging part-side spring 42 and the hanging part-side spring 43 are selected as being different in material and standard, so that a large difference in elastic period can be selected.

However, even if the elastic moduli of the suspension-side spring 42 and the suspension-side spring 43 are different from each other, as time elapses after vibration occurs, their cycles may coincide with each other and reach a resonant frequency. Therefore, the different elastic modulus acts to delay the time to reach the resonance frequency.

In order to prevent the process of reaching the resonant frequency itself, both the suspension-side spring 42 and the suspension-side spring 43 must be suppressed from freely vibrating at a regular cycle.

However, if the free vibration of the springs 42 and 43 is suppressed in this way, the vibration absorption or vibration damping action of the springs 42 and 43 may be hindered. may contradict each other.

The earthquake-resistant lighting fixture according to the present embodiment is capable of suppressing periodic vibration while allowing the shock-absorbing operation of the suspension-side spring 42 and the suspension-side spring 43 so that both of these contradictory requests can be satisfied. As shown in 4, resonance suppression tubes 46 and 49 are provided.

The resonance suppression tubes 46 and 49 may be made of a material that is flexible and has a certain elastic force. At this time, the specific material of the resonance suppression tubes 46 and 49 is not particularly limited as long as it has flexibility and elasticity. Therefore, it may be various kinds of resin materials or inorganic materials such as silicon.

When the resonance suppression tubes 46 and 49 are covered with the suspension side spring 42 and the suspension side spring 43, the compression operation of the springs 42 and 43 is not hindered due to the flexibility of the material.

However, the suspension-side spring 42 and the suspension-side spring 43 have resonance suppression tubes 46 and 49 between each layer of springs 42 and 43 due to the external tightening of the resonance suppression tubes 46 and 49. The inner surface is interposed, and friction with the inner surface of the resonance suppression tubes 46 and 49 is generated whenever the springs 42 and 43 are elastically operated, and disturbance occurs in the resonance period of the springs 42 and 43, and the spring Before the resonance of (42, 43) occurs, the free vibration is rapidly attenuated, so that the occurrence of resonance can be prevented.

Since the resonance suppression tubes 46 and 49 are required for both the suspension side spring 42 and the suspension side spring 43, the upper resonance suppression tube 46 coupled to the suspension side spring 42 and the suspension side spring 43 ) The lower resonance suppression tube 49 coupled to is provided separately.

Meanwhile, the suspension part 20 may have a structure whose length is variable so that the height of the suspension object 10 can be freely adjusted regardless of where the suspension object 10 is installed.

Specifically, as shown in FIG. 4, the suspension part 20 consists of a cylinder 21 and a piston 22, and the rigid material member constituting the suspension part 20 is composed of the cylinder 21 and the piston 22. One is fixed to the ceiling fixing plate 25 and the other is installed to allow the length of the hanging part 20 to be variable by operating a piston. At this time, a stopper 24 may be installed between the piston 22 and the cylinder 21 to stop the variable operation of the piston operation type.

In the embodiment shown in FIG. 4, the stopper 24 includes a vertical long hole 23 formed in the body of the piston 22 along the longitudinal direction of the piston 22 and a through hole formed in the body of the cylinder 21 And, it is formed as a fastening member that can be fixed by passing through the through hole and the vertical long hole 23 at the same time. Therefore, the length at which the piston 22 is inserted into the cylinder 21 can be freely selected within the length range of the vertical long hole 23, and the vertical long hole 23 and the through-hole bolt simultaneously pass through and are fixed at the selected point. The bolt at this time will be referred to as a stopping bolt.

On the other hand, as shown in FIGS. 3 and 4, the suspension-side bracket 32 extends vertically downward to both sides of the upper plate 321 in close contact with the suspension-side bracket 31 and the upper plate 321, respectively, to the suspension. The side plate 322 covering part or all of the side surface of (10) may be integrally formed.

Here, the side plate 322 may protrude inward so that the lower end of the side plate 322 can support the bottom surface of the suspension object 10, or as shown in FIGS. 3 and 4, the side surface of the suspension object 10. The lower end of the side plate 322 may protrude and be formed as a clamping protrusion 323 so that the lower end of the side plate 322 can be fitted into the side rail groove 12 formed long in the side rail groove 12 . As a result, the suspension side bracket 32 grips the suspension object 10 in the form of a kind of clamp.

However, in a situation where vibration such as an earthquake occurs, the posture of holding the side rail groove 12 of the suspension object 10 by the suspension object side bracket 32 may rise unstablely as shown in FIGS. 6A and 6B. Of course, the hanging object side bracket 32 is made of a rigid member and is robust, but when strong instantaneous vibration occurs, the clamping posture holding the hanging object 10 may be unstablely distorted. However, FIGS. 6A and 6B are exaggerated representations so that such an unstable situation can be conceptually easily grasped.

The situation in which the coupling between the suspension-side bracket 32 and the suspension 10 becomes unstable is most likely due to vibration in the shear direction, but may also occur when vertical vibration is converted to shear-direction vibration.

In the present embodiment, a seismic plate 33 is provided so that such a situation can be prevented in advance and an assembled state between the suspension side bracket 32 and the suspension object 10 can be firmly maintained.

As shown in FIG. 6C, the seismic plate 33 is a plate member made of a rigid material having grooves in the form of horizontal long holes through which the side plates 322 pass through, formed on both sides, and installed in close contact with the upper surface of the suspension object 10.

As shown in FIGS. 4 and 6C , the side plates 322 of the suspension side brackets 32 are inserted through both sides of the seismic plate 33 and may be welded together with the side plates 322 .

When the seismic plate 33 is installed, as shown in FIG. 6C, strong vibration in the shear direction is generated so that even if the upper part of the suspension side bracket 32 tilts left and right, the side plate 322 of the suspension side bracket 32 does not 33), it is inserted into the groove formed and fixed by welding, and the posture is maintained firmly. Therefore, since the change of the side plate 322 is almost suppressed, the coupling between the clamping protrusion 323 formed at the lower end of the side plate 322 and the side rail groove 12 of the suspension object 10 can be firmly maintained.

The present invention was confirmed to maintain structural integrity as a result of seismic integrity of building electrical equipment in X, Y, and Z axes at Korea SGS Co., Ltd. recognized by the Korea Accreditation Organization (KOLAS), and also by the Korea Electric Association. As a result of examining the seismic integrity of the building electrical equipment, it was found that the anchorage part of the facility has sufficient details for self-weight and seismic load, so there is no problem with deflection due to the increase in the length of the raceway itself, so structural safety can be secured. It has been confirmed that it can.

The present invention described above is not limited by the foregoing embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within a range that does not deviate from the technical spirit of the present invention. will be clear to those who have knowledge of

A: stationary junction C: ceiling
10: suspension 12: side rail groove
20: suspension part 21: cylinder
22: piston 23: vertical long hole
24: stopper 25: ceiling fixing plate
30: connection part 31: hanging part side bracket
32: pendant side bracket 33: seismic plate
40: buffer part 41: bolt
42: suspension side spring 43: suspension side spring
44: upper washer 45: upper nut
46: upper resonance suppression tube 47: lower washer
48: lower nut 49: lower resonance suppression tube
311: vertical plate 312: horizontal plate
321: top plate 322: side plate
323: clamping protrusion

Claims (9)

a ceiling fixing plate fixed to the ceiling, and a suspension part fixed to the ceiling fixing plate and made of a pillar-shaped rigid material member extending downwardly;
cable trays, conduits, or chamber-type suspensions that are formed long;
It consists of a connecting part, which is a member that connects the lower part of the suspension part and the suspension object,
The connection part is composed of a suspension side bracket installed on the suspension part and a suspension side bracket fixed to the suspension part,
A buffer unit for connecting the suspension-side bracket and the suspension-side bracket relatively variably within a certain range;
The buffer unit includes a bolt that penetrates and connects both the suspension side bracket and the suspension side bracket, and a buffer spring that surrounds the bolt,
The rigid material member constituting the suspension part is composed of a cylinder and a piston, and one of the cylinder and the piston is fixed to the ceiling fixing plate and the other is operated by a piston so that the length of the suspension part is variable.
An earthquake-resistant suspension device, characterized in that a stopper for stopping the piston operation is installed between the piston and the cylinder. delete According to claim 1,
The spring is composed of a suspension-side spring installed between the suspension-side bracket and one end of the bolt, and a suspension-side spring installed between the suspension-side bracket and the other end of the bolt, and one end and the other end of the bolt are each a bolt head or a breakaway prevention nut. is fastened to prevent the escape of the suspension side or the suspension side spring,
An earthquake-resistant suspension device, characterized in that the suspension-side bracket and the suspension-side bracket are in close contact with each other due to the elastic force of the suspension-side spring and the suspension-side spring. According to claim 3,
The suspension-side spring and the suspension-side spring have different elastic moduli. According to claim 1,
An earthquake-resistant suspension device in which the free vibration of the spring is suppressed and resonance is prevented by surrounding the buffer spring with a resonance suppression tube made of a flexible material. delete According to claim 1,
The stopper is formed of a long hole formed in the body of the piston along the longitudinal direction of the piston, a through hole formed in the body of the cylinder, and a fastening member capable of passing through the through hole and the long hole at the same time. Seismic suspension, characterized in that Device According to claim 1,
The suspension-side bracket includes a top plate in close contact with the suspension-side bracket, and side plates extending vertically downward on both sides of the top plate to cover part or all of the side surface of the suspension. According to claim 8,
The suspension-side bracket further comprises a seismic plate having grooves through which the side plates pass through and installed in close contact with the upper surface of the suspension.

Images