KR20220052701A - Quake-proof suspension device - Google Patents

Abstract

The present invention relates to a quake-proof suspension device for suspending an object comprised of any one or a combination of two or more of a conduit, a cable tray, and a wiring device from the ceiling of a building or a facility, which comprises: an anchor installed on and fixed to the ceiling; a suspension pipe unit as a member connecting the anchor and the suspended object to have a circular horizontal cross section and predetermined length, wherein the suspension pipe unit is disposed longitudinally at a right angle; an upper part fixing unit having an upper part which comes in close contact with the ceiling and a lower part joined to the top of the suspension pipe unit; a lower part fixing unit joined to the bottom of the suspension pipe unit; and a suspended object clamp joined to a lower part of the lower part fixing unit to grip the suspended object, wherein the upper part fixing unit has an upper surface comprised of a horizontal plane with a predetermined area to come in close contact with the ceiling and a lower part with a downward protrusion portion having threads on the outer circumferential surface and the lower part fixing unit has a lower surface comprised of a horizontal plane with a predetermined area to come in close contact with the top surface of the suspended object clamp and an upper part with an upward protrusion portion having threads on the outer circumferential surface. In addition, threads are formed respectively on the inner circumferential surface of the upper part of the suspension pipe unit and the inner circumferential surface of the lower part, thereby allowing the upper part fixing unit and the lower part fixing unit to be screwed to the suspension pipe unit. Accordingly, although an earthquake vibrates the building or facility, a suspended object can be safely maintained.

Description

Quake-proof suspension device

The present invention relates to a device for suspending a suspension consisting of any one or a combination of two or more of a conduit, a cable tray, or a similar wiring device from the ceiling of a building or facility. It's about the device.

A conduit, cable tray or similar wiring harness or luminaire (hereinafter referred to as a 'suspension') is usually suspended from the ceiling by a member such as a wire or rope or chain ring.

However, since members such as wires, ropes, or rings vibrate when vibration is generated, the vibration can be amplified and transmitted to the suspension. can lead to

However, in order to prevent the amplification of such vibrations, when the suspension is connected to the ceiling with a rigid member capable of withstanding earthquakes, the work of fixing the rigid member to the ceiling and the work of combining the rigid member with the suspension are all welded or welded on site. Since drilling and tightening work is required with a plurality of fastening members, it takes a considerable amount of time to perform the work one by one in an indoor space of a particularly large area, and the worker may be exposed to the dangers associated with the high-altitude work for a long time.

In the past, technology development for earthquakes was not actively conducted in Korea. However, since 2016, at least 88 to 252 earthquakes have occurred in Korea every year. The development of a suspension device or construction method having a simple installation structure that allows indoor suspension facilities to withstand earthquakes and spread more universally is insufficient.

Registered Patent Publication No. 10-1843778 (published date: 2017. 11. 17)

Accordingly, the present invention provides a method for installing a suspended object such as a conduit, a cable tray, or similar wiring device or luminaire indoors, securely connecting the ceiling and the suspension to transmit the vibration of an earthquake while safely maintaining the installation state, An object of the present invention is to provide a seismic suspension device that can be manufactured inexpensively and with extremely simple installation process.

In order to achieve this object, the earthquake-resistant suspension device according to the present invention is a suspension device for suspending a suspension consisting of any one or a combination of two or more of a conduit, a cable tray, or a similar wiring device from the ceiling of a building or facility, the ceiling An anchor fixedly installed on the; a member for connecting the anchor and the suspension, the suspension pipe unit having a circular horizontal cross section, formed by a certain length, and vertically disposed in the longitudinal direction; an upper fixing unit in which the upper part is in close contact with the ceiling and the lower part is assembled to the upper end of the suspension pipe unit; a lower fixing unit assembled to a lower end of the suspension pipe unit; It includes a suspension clamp assembled to the lower portion of the lower fixing unit and gripping the suspension, wherein the upper fixing unit is formed in a horizontal plane having a constant area and is in close contact with the ceiling, and a screw thread is formed on the outer circumferential surface at the bottom a lower protrusion is formed, the lower fixing unit is formed as a horizontal surface having a constant area on the bottom surface to be in close contact with the upper surface of the suspension clamp, and an upper protrusion having a thread formed on the outer circumferential surface is formed in the upper portion of the suspension pipe unit Threads are formed on the upper inner circumferential surface and the lower inner circumferential surface, respectively, so that the upper fixing unit and the lower fixing unit are coupled to the suspension pipe unit by screwing or welding.

Here, the suspension pipe unit preferably includes a plurality of suspension pipes having the same or different lengths and a coupling connecting the respective suspension pipes, wherein each of the plurality of suspension pipes is threaded on both side outer peripheral surfaces, The coupling has holes formed at both ends and a corresponding thread corresponding to the thread is formed on the inner circumferential surface of the hole, so that the suspension pipe and the coupling are assembled to each other by screwing, and couplings are provided at the upper end and lower end of the suspension pipe unit. This is placed

In addition, the upper fixing unit or the lower fixing unit preferably includes a gripping head capable of being gripped by a tool, a first protruding bolt protruding from the gripping head toward the suspension pipe unit, and the anchor or the suspension clamp from the gripping head. Consists of a nipple made of a second protruding bolt facing toward the upper fixing unit, as a plate-shaped member, a hole through which the second protruding bolt is formed is installed between the holding head and the second protruding bolt, and the ceiling is in close contact with the ceiling More plates are included.

In addition, the earthquake-resistant suspension device according to the present invention preferably further comprises a hanger rod having a thread formed on the outer circumferential surface as a rod-shaped member and being built into the suspension pipe unit, and the upper end of the hanger rod is further from the upper portion of the suspension pipe unit. It protrudes and is screwed to the anchor, and the lower end of the suspension rod further protrudes from the lower part of the suspension pipe unit and is screwed with the nut with the suspension clamp interposed therebetween.

At this time, the upper fixing unit or the lower fixing unit is preferably a flat flange, and a hollow protrusion that protrudes on one surface of the flange and has a thread screwed to the suspension pipe on the outer circumferential surface and the hanger rod through hole is formed in the center. It is made of a hollow flange.

On the other hand, the suspension pipe unit is preferably composed of a tube-shaped cylinder module and a length-adjustable tube that is retractably inserted into the cylinder module and whose length of withdrawal from the cylinder module is adjusted with a length-adjusting pin.

In this case, the length adjustment pin preferably passes through the cylinder module from the outside of the cylinder module to fix the height of the length adjustment tube by pressing the outer circumferential surface of the length adjustment tube, and the length adjustment tube has the length adjustment tube along the longitudinal direction of the tube. A guide long hole into which the length adjustment pin is inserted is formed, and an inner frame contacting the end of the length adjustment pin and a connecting wall connecting both sides of the inner wall to the inner circumferential surface of the length adjustment tube are formed inside the guide long groove. do.

In this case, the guide long groove is preferably formed in plurality symmetrically radially along the circumference of the length control tube, the width of the inner wall is formed to be larger than the width of the guide long groove, the inner wall has the same curvature as the outer peripheral surface of the length adjustment tube While having a center, the radius is formed in the form of an arc smaller than the radius of the outer circumferential surface of the length control tube, and the circles passing through each inner wall at the same time form a concentric circle with the outer circumferential surface of the length adjustment tube, the inner wall having a thread connected to each other is formed, , The lower fixing unit is a cap-shaped flange comprising a plate-shaped flange and a protrusion formed on the upper part of the flange, wherein the protrusion is formed in a cylindrical shape that can be coupled inside a circle passing the inner wall at the same time, and the outer circumferential surface of the protrusion and the inner wall Corresponding threads are formed on the inner circumferential surface, so that the cap-type flange can be screwed to the lower end of the length adjustment tube.

Here, the flange constituting the capped flange preferably has a bolt coupling hole formed radially symmetrically with respect to the center of the flange, and a flange through bolt assembled to the bolt coupling hole is provided, so that the flange through bolt is connected to the cap type flange and the cap type flange. Attach the suspension clamp.

The seismic suspension device according to the present invention securely connects the ceiling and the suspension when a conduit, cable tray, or similar wiring device or suspension is installed indoors, so that even if vibration of an earthquake is transmitted, the suspension is safely installed while maintaining , the installation process is extremely simple and has the effect that it can be manufactured inexpensively.

1 is a front view showing an embodiment of a seismic suspension device according to the present invention;
Figure 2 is a front sectional view of Figure 1;
Fig. 3a is a front cross-sectional view showing a further embodiment of Fig. 2;
Figure 3b is a perspective view of the upper or lower fixing unit in Figure 3a,
Fig. 4a is a front cross-sectional view showing a modified embodiment of Fig. 3a;
Figure 4b is a front sectional view of the upper fixing unit in Figure 4a;
Fig. 5a is a front view showing a modified embodiment of Fig. 1;
Figure 5b is a front cross-sectional view of Figure 5a;
Fig. 5c is an exploded front view of Fig. 5a;
Fig. 6a is a front view showing a further embodiment of Fig. 5a;
Figure 6b is a front sectional view of Figure 6a;
Fig. 7a is a front view showing a further variant embodiment of Fig. 1;
Figure 7b is a front cross-sectional view of Figure 7a;
Fig. 7c is a horizontal cross-sectional view of the lengthening tube in Fig. 7a;
Fig. 7d is a perspective view of the lower fixing unit in Fig. 7a;

Specific structural or functional descriptions presented in the embodiments of the present invention are only exemplified for the purpose of describing embodiments according to the concept of the present invention, and the 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 herein, and it should be understood to include all modifications, equivalents and 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.

For reference, what is suspended at the bottom of the earthquake-resistant suspension device according to the present invention refers to a suspension consisting of any one or a combination of two or more of a conduit, a cable tray, a luminaire, or a similar wiring device, hereinafter referred to as a 'suspension (D)' to be called

As shown in FIG. 1 , the earthquake-resistant suspension device according to the present invention includes an anchor A, a suspension pipe unit 100 , an upper fixing unit, a lower fixing unit, and a suspension clamp 270 .

The anchor (A) shown in FIG. 1 includes members having the same action as a conventional anchor or anchor, and is usually installed in the form of being embedded in the ceiling as shown in FIG. 1 .

As shown in FIG. 1, the suspension pipe unit 100 is a member connecting the anchor A and the suspension D, and has a circular horizontal cross section, is formed by a certain length, and is vertically arranged in the longitudinal direction. . However, the suspension pipe unit 100 is not limited to the shape of FIG. 1 , and as will be described later, a plurality of members may be coupled to each other.

The upper fixing unit is a member that has an upper part in close contact with the ceiling (C) and a lower part assembled on the upper end of the suspension pipe unit (100). The upper fixing unit may also be embodied in various embodiments as will be described later.

The lower fixing unit is assembled at the lower end of the suspension pipe unit 100 and is a member for coupling the upper part of the suspension clamp 270 and the lower end of the suspension pipe unit 100, which will be described later, and has the same or similar shape as the upper fixing unit. and may be embodied in a plurality of embodiments.

The suspension clamp 270 is a member that is coupled to the suspension D as shown in FIG. 1 and is also coupled to the lower fixing unit. There is no particular limitation, and it may be in the form of a simple bracket as shown in FIG. 1 .

In one embodiment of the upper fixing unit shown in Figure 1, the upper surface is formed as a horizontal surface having a certain area and is in close contact with the ceiling (C), the lower portion is formed with a protrusion in which a thread is formed on the outer peripheral surface, the lower fixing unit has a bottom surface It is formed in a horizontal plane having a certain area and is in close contact with the upper surface of the suspension clamp 270, and an upper protrusion having a thread formed on the outer peripheral surface is formed on the upper part, and the upper inner peripheral surface and the lower inner peripheral surface of the suspension pipe unit 100 are each threaded. By being formed, the upper fixing unit and the lower fixing unit are screwed to the suspension pipe unit 100 . Alternatively, they may be joined to each other by welding, if necessary.

As described above, the suspension pipe unit 100 is formed in a circular tube shape, so that it can be installed to the upper fixed unit by screw coupling or welding. Therefore, there is no need to perform work such as field welding or installing a plurality of bolts at high altitude in the field. In particular, since the upper fixed unit and the suspended pipe unit 100 are separately provided, the upper fixed unit is installed first, and then the suspended pipe unit 100 can be installed by screwing or welding, so that the installation process of the suspended pipe unit 100 Since there is no need for two or more workers to work together at high altitude, not only safety accidents are prevented, but also the installation process is extremely simple. there is

The suspension pipe unit 200 may be composed of a plurality of suspension pipes 202 having the same or different lengths and a coupling 210 connecting each suspension pipe 202 as shown in FIGS. 5A to 5C. there is.

Here, each of the plurality of suspension pipes 202 has a first screw thread 201 formed on both sides of the outer circumferential surface, and the coupling 210 has a hollow formed at both ends, and a first screw thread 201 corresponding to the first screw thread 201 is formed on the hollow inner circumferential surface. Two threaded threads 211 are formed, the suspension pipe 202 and the coupling 210 are assembled to each other by screw coupling, and the coupling 210 is disposed at the top and bottom of the suspension pipe unit 200 to each other. are combined

The coupling 210 may be manufactured in plural in various lengths to form one set, and the required length may be selected and used in the right place, or may be cut and used on the spot as needed in the field. In this case, the second screw thread 211 may be formed on the inner circumferential surface of the coupling 210 over the entire longitudinal direction.

The upper fixed unit or the lower fixed unit includes a gripping head 151 that can be gripped with a tool such as a wrench or a spanner, and a suspension pipe unit 100 from the gripping head 151 as shown in FIG. 2 or 5c. It may be a nipple 150 consisting of a first protruding bolt 152 protruding and a second protruding bolt 153 from the gripping head 151 toward the anchor A or the suspension clamp 270 . As such, when the upper or lower fixing unit is in the form of a nipple 150, the upper or lower fixing unit is assembled to the anchor (A) side and when assembled to the lower suspension pipe unit 100 side, it is possible by simple screw coupling. Therefore, it is possible to assemble the entire suspension device on the ceiling just by installing the anchor (A) without a separate fastening member or welding.

In this case, a hole through which the second protruding bolt 153 passes as a plate-shaped member is formed in the nipple-shaped upper fixing unit as shown in FIG. 2 so that the nipple 150 can be firmly adhered to the ceiling. A ceiling plate 190 which is installed between the head 151 and the second protruding bolt 153 and is in close contact with the ceiling may be further installed.

On the other hand, as shown in FIG. 3A , as a rod-shaped member, a screw thread is formed on the outer peripheral surface at both ends or the entire length direction, and a hanger rod 130 embedded in the suspension pipe unit 100 may be further installed.

At this time, the upper end of the hanger rod 130 further protrudes from the upper part of the suspension pipe unit 100 and is screw-coupled to the anchor A, and the lower end of the hanger rod 130 further protrudes from the lower part of the suspension pipe unit 100. It is screwed with the nut 141 for fixing the hanger rod with the suspension clamp 270 interposed therebetween.

In this way, when the hanger rod 130 is installed, seismic performance can be reinforced, especially when the suspension pipe unit 100 is formed to be long. Also, when the hanger rod 130 is installed, the hollow flange 160 shown in FIG. 3B or the simultaneous connection member 180 shown in FIG. 4B is installed instead of the nipple 150 .

As shown in FIGS. 3A and 3B, the hollow flange 160 has a flat flange 162 and a thread that protrudes on one surface of the flange 162 and is screwed to the suspension pipe 100 on the outer peripheral surface, and is formed in the center It consists of a hollow protrusion 161 in which the hanger rod through hole 163 is formed.

In this case, the suspension pipe unit 100 may be fixed even if a thread is not formed on the outer peripheral surface of the hollow protrusion 161 formed in the hollow flange 160 . This is because when the suspension rod 130 and the lower fixed unit are engaged, the suspension pipe unit 100 can be fixed between the upper fixed unit and the lower fixed unit. In this case, the upper and lower fixing units may be in the form of a hollow flange 160 .

Also, instead of the hollow flange 160, the simultaneous connection member 180 as shown in FIG. 4B may be installed. In the simultaneous connection member 180, a pipe fixing hole 184 into which the suspension pipe unit 100 can be inserted is formed, and a hanger rod through hole 1831 through which the hanger rod 130 is installed is formed, so that the suspension pipe unit ( 10) and the hanger rod 130 can both be fixed at the same time, and since the inclined wall part 182 supports the outer peripheral surface of the suspension pipe unit 100, the suspension pipe unit 100 can be supported more stably.

And the hanger rod 130 is applied even when the suspension pipe unit 200 is formed by a combination of the suspension pipe 202 and the coupling 210 as shown in FIGS. 6A and 6B, so that a plurality of members are combined. The state can be kept stable.

On the other hand, the suspension pipe unit 300 is inserted so as to be drawn out into the tube-shaped cylinder module 310 and the cylinder module 310 as shown in FIGS. 7A and 7B , and the cylinder module 310 with a length adjustment pin 311 ) may be made of a length adjustment tube 320 that the length of the withdrawal from the control.

A guide hole 322 into which the length adjustment pin 311 is inserted is formed in the length adjustment tube 320 in the longitudinal direction of the length adjustment tube 320, and the length adjustment pin 311 is formed inside the guide hole 322. An inner frame comprising an inner wall 323 in contact with the end of the inner wall 323 and a connecting wall 324 connecting both sides of the inner wall 323 to the inner circumferential surface of the length adjustment tube 320 is formed.

In this case, the length adjustment pin 311 fixes the length adjustment tube 320 by a tightening operation in the form of a bolt or screw. That is, the length adjustment pin 311 penetrates the cylinder module 310 from the outside of the cylinder module 310 and presses the inner wall to fix the height of the length adjustment tube 320 .

In this way, when the suspension pipe unit 300 is formed in the form of a cylinder and a piston, the length adjustment can be made freely even if the coupling 210 as shown in FIG. 5A is not separately installed.

At this time, the upper fixed unit and the lower fixed unit are in the form of a nipple 150 at the upper part when the hanger rod 130 is not installed therein as shown in FIG. 7B , and a nipple 150 or a hollow flange 160 at the lower part. And, when the hanger rod 130 is installed therein, the hollow flange 160 or the cap-type flange 170 shown in FIG. 7D may be installed at the upper and lower portions. When the hanger rod 130 is installed, the length of the hanger rod 130 itself is fixed, but as shown in FIG. 7b , the hanger rod 130 protrudes between the suspension clamp 270 and the suspension D. The length may be adjusted, or the hanger rod 130 may be cut and installed to fit the adjusted length of the length adjustment tube 320 .

However, in particular, when the hanger rod 130 is not installed, a problem may occur.

Because, when the hanger rod 130 is not installed, the hollow flange 160 or the cap-type flange 170 used as the lower fixing unit must be threaded on the outer circumferential surface when viewed based on FIG. 7B , the length adjustment tube 320 . It can be stably coupled by screwing with the .

However, in order to be able to fix the length of the extension tube 320 with the length adjustment pin 311, the inner wall 323 must be formed eventually. However, in that case, even if a thread is formed on the inner circumferential surface of the length adjustment tube 320, there is a problem that the screw connection with the lower fixing unit cannot be made. That is, the length adjustment tube 320 can stably fix the length adjustment tube 320 without the length adjustment pin 311 deflecting to the side or shaking only when the inner wall 323 and the connection wall 324 are formed, so the length adjustment In order to adjust the extension length of the pipe 320, structures such as the inner wall 323 and the connecting wall 324 must protrude, and in order for the lower fixing unit to be screwed, there is a contradictory request that the structure must not protrude therein. do.

In the present invention, it is proposed that the internal structure of the length adjustment tube 320 is formed as shown in FIG. 7c so that these contradictory requests can be simultaneously resolved.

That is, as shown in FIG. 7c , a plurality of guide long holes 322 are radially symmetrically formed along the circumference of the length adjustment tube 320 , and the width of the inner wall 323 is greater than the width of the guide long hole 322 . is formed, and the inner wall 323 has the same center of curvature as the outer circumferential surface of the length adjustment tube 320 and the radius is formed in an arc shape smaller than the outer circumference radius of the length adjustment tube 320, and each inner wall 323 is formed at the same time An imaginary circle passing through is formed concentric with the outer circumferential surface of the length adjustment tube 320, and an arc thread 325 connected to each other is formed on the inner wall 323, and the lower fixing unit is a plate-shaped flange 172 and, It is a cap-shaped flange 170 made of a cap-shaped protrusion 171 formed on the flange 172, and the cap-shaped protrusion 171 is formed in a cylindrical shape that can be combined inside an imaginary circle passing through the inner wall 323 at the same time, and the cap-shaped protrusion Threads corresponding to each other are formed on the outer circumferential surface of the 171 and the inner circumferential surface of the inner wall 323 , so that the cap-shaped flange 170 can be screwed to the lower end of the length adjustment tube 320 .

Therefore, since the internal structure as shown in FIG. 7c is formed inside the length adjustment tube 320, the means for adjusting the length described above and the means for screwing the lower fixing unit are solved at the same time.

Meanwhile, a bolt coupling hole 1721 is formed in the flange 172 constituting the cap-shaped flange 170 to be radially symmetrical with respect to the center of the flange 172 , and a flange through bolt 1722 assembled to the bolt coupling hole 1721 . ) is provided, the flange through bolt 1722 can couple the cap-type flange 170 and the suspension clamp 270 .

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention pertains that various substitutions, modifications and changes can be made within the scope without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of

A: Anchor C: Ceiling
D: Suspension 100,200,300: Suspension pipe unit
130: hanger rod 141: hanger rod fixing nut
142: nut for fixing flange 150: nipple
151: holding head 152: first protruding bolt
153: second protrusion bolt 160: hollow flange
161: hollow protrusion 162,172: flange
163,1831: hanger rod through hole 170: capped flange
171: cap-shaped protrusion 180: simultaneous connection member
181: flange portion 182: inclined wall portion
183: central protrusion 184: pipe fixing hole
190: ceiling plate 201: first thread
202: suspension pipe 210: coupling
211: second thread 270: suspension clamp
310: cylinder module 311: length adjustment pin
312: alignment line 320: length adjustment tube
321: tube body 322: guide long hole
323: inner wall 324: connecting wall
325: circular arc thread 1721: bolted hole
1722: Flange Through Bolt

Claims (9)

In the suspension device for suspending a suspension consisting of any one or a combination of two or more of a conduit, a cable tray, or a similar wiring device from the ceiling of a building or facility,
an anchor fixedly installed on the ceiling;
a member for connecting the anchor and the suspension, the suspension pipe unit having a circular horizontal cross section and formed by a predetermined length, the suspension pipe unit being vertically disposed in the longitudinal direction;
an upper fixing unit in which the upper part is in close contact with the ceiling and the lower part is assembled to the upper end of the suspension pipe unit;
a lower fixing unit assembled to a lower end of the suspension pipe unit;
It includes a; a suspension clamp assembled to the lower portion of the lower fixing unit to hold the suspension;
The upper fixing unit is formed with a horizontal surface having a constant area on the upper surface and is in close contact with the ceiling, and a lower protrusion in which a screw thread is formed on the outer peripheral surface is formed in the lower part,
The lower fixing unit is formed with a horizontal surface having a constant area on the bottom surface to be in close contact with the upper surface of the suspension clamp, and an upper protrusion in which a thread is formed on the outer circumferential surface is formed in the upper portion,
A seismic suspension device in which threads are formed on the upper inner circumferential surface and the lower inner circumferential surface of the suspension pipe unit, respectively, so that the upper fixing unit and the lower fixing unit are screwed or welded to the suspension pipe unit. The method of claim 1,
The suspension pipe unit comprises a plurality of suspension pipes having the same or different lengths and a coupling connecting each suspension pipe,
Each of the plurality of suspension pipes has a thread formed on both sides of the outer circumferential surface, the coupling has holes formed at both ends, and a corresponding thread corresponding to the screw thread is formed on the inner circumferential surface of the hole,
The suspension pipe and the coupling are assembled to each other by screwing,
A seismic suspension device, characterized in that coupling is disposed at the upper end and lower end of the suspension pipe unit. The method of claim 1,
The upper fixing unit or the lower fixing unit includes a gripping head capable of being gripped by a tool, a first protruding bolt protruding from the gripping head toward the suspension pipe unit, and a second protruding bolt from the gripping head toward the anchor or the suspension clamp. Consists of a nipple consisting of a protruding bolt,
The upper fixing unit is a plate-shaped member, a hole through which the second protruding bolt passes, is installed between the holding head and the second protruding bolt, and further includes a ceiling plate in close contact with the ceiling. The method of claim 1,
As a rod-shaped member, a thread is formed on the outer circumferential surface and further comprises a hanger rod built into the suspension pipe unit,
The upper end of the hanger rod protrudes further from the upper part of the suspension pipe unit and is screwed to the anchor, and the lower end of the suspension rod further protrudes from the lower part of the suspension pipe unit to be screwed with the nut with the suspension clamp interposed therebetween. Features an earthquake-resistant suspension. 5. The method of claim 4,
The upper fixing unit or the lower fixing unit is a hollow flange comprising a flat flange and a hollow protrusion protruding on one surface of the flange and having a thread screwed to the suspension pipe on the outer peripheral surface and having the hanger rod through hole formed in the center. Seismic suspension device, characterized in that. The method of claim 1,
The suspension pipe unit is an earthquake-resistant suspension device, characterized in that it comprises a tube-shaped cylinder module and a length-adjustable tube which is retractably inserted into the cylinder module and the length of which is drawn out from the cylinder module with a length-adjusting pin. 7. The method of claim 6,
The length adjustment pin passes through the cylinder module from the outside of the cylinder module and presses the outer circumferential surface of the length adjustment tube to fix the height of the length adjustment tube,
The length adjustment tube is formed with a guide long hole into which the length adjustment pin is inserted along the length direction of the length adjustment tube,
The seismic suspension device, characterized in that the inner frame comprising an inner wall in contact with the end of the length adjustment pin and a connecting wall connecting both sides of the inner wall to the inner circumferential surface of the length adjustment tube is formed inside the guide long groove. 8. The method of claim 7,
A plurality of guide long grooves are formed radially symmetrically along the circumference of the length adjustment tube, and the width of the inner wall is formed to be larger than the width of the guide long groove, and the inner wall has the same center of curvature as the outer peripheral surface of the length adjustment tube while having the same center of curvature. The radius is formed in a circular arc shape smaller than the radius of the outer circumferential surface of the length control tube, and a circle passing through each inner wall at the same time forms a concentric circle with the outer circumferential surface of the length adjustment tube,
Threads connected to each other are formed on the inner wall,
The lower fixing unit is a cap-shaped flange consisting of a plate-shaped flange and a cap-shaped protrusion formed on the upper portion of the flange,
The cap-shaped protrusion is formed in a cylindrical shape that can be coupled inside a circle passing through the inner wall at the same time,
Corresponding threads are formed on the outer peripheral surface of the cap-shaped protrusion and the inner peripheral surface of the inner wall, so that the cap-shaped flange can be screwed to the lower end of the length adjustment tube. 9. The method of claim 8,
The flange constituting the cap-shaped flange is provided with a bolt coupling hole formed radially symmetrically with respect to the center of the flange, and a flange through bolt assembled to the bolt coupling hole,
The earthquake-resistant suspension device, characterized in that the flange through bolt connects the cap-type flange and the suspension clamp.

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