KR20230113252A - Sway Brace Device For Buildings Like Pipe - Google Patents

Abstract

Various pipes (P) are suspended and installed on the ceiling or wall of a building structure, and in the case of an earthquake or external shock, an anti-shake brace (T) for preventing excessive movement of the pipe (P) is initiated. The anti-shake prop (T) includes a building attachment device 100, a support 200, a lower clamp 310, an upper clamp 320, and a tightening bolt 330. The lower clamp 310 is coupled to the support 200 to support the pipe P, and the upper clamp 320 has one side movably inserted into the lower clamp 310 and is fixed. By pulling the other side of the clamp 320, a clamping force is applied so that a pressing force can be generated in the pipe P between the lower clamp 310 and the lower clamp 310. In particular, the lower clamp 310 and the upper clamp 320 have straight parts 311 and 321 and arc parts 312 and 322, respectively, and the support part 200, the straight part 311 of the lower clamp, and the straight part of the upper clamp (321) are coupled in parallel in the longitudinal direction. Accordingly, it is possible to provide a longitudinal brace (T) having a simple structure, light weight, and more efficiently fixing the earthquake-resistant pipe (P) in a narrow working space.

Description

Seismic anti-swaying brace for pipes {Sway Brace Device For Buildings Like Pipe}

The present invention relates to a vibration-preventing brace for installing various piping by hanging it from the ceiling or wall of a building structure and preventing excessive movement of piping in the event of an earthquake or external shock, and more particularly, piping more efficiently in a narrow working space. It relates to an anti-swaying brace for fixed installation.

In general, a pipe line is formed on a ceiling or wall of a building so that fluid can flow, such as a firefighting equipment or a water supply pipe, or a pipe line is hung and installed so that wires or cables required for electrical equipment are not exposed to the outside. However, when the pipe is shaken during an earthquake or external shock, safety accidents such as water leakage or electric leakage may occur due to breakage or damage. As a seismic design method, an anti-shake brace is used to prevent excessive movement. The seismic design of the shaking support brace is to make the structure and related parts rigid so that they do not fall apart so that they can withstand impact. do it

The anti-shake brace can be divided into a longitudinal brace and a transverse brace according to the installation location, and can be divided into a wall fixing type and a beam clamp type (BEAM CLAMP type) according to the type of fixing to the building structure, and depending on the installation angle It can be divided into 30˚, 45˚, 60˚, 90˚, etc.

Figures 1 and 2 show an example of a conventional anti-swaying brace, Figure 1 is a side view showing a longitudinal brace in which a pipe connection device and a support are installed on the same load acting surface, Figure 2 is on a different load acting surface It is a side view showing a longitudinal brace in which a pipe connection device and a support are installed.

Referring to FIG. 1 , anchor bolts 3 are buried in the concrete slab 1 of the ceiling, and a pipe 5 is fixed to the anchor bolts 3 with an anti-swaying support 10. The anti-shake brace 10 basically consists of a building attachment device 11, a support 12, and a pipe connection device 13, and the building attachment device 11 is necessary for fixing to a building structure and is connected to a pipe. A device (13) is necessary for directly fixing the pipe (5). In addition, separate adapters 14 and 15 between the building attachment device 11 and the support 12 and between the support 12 and the pipe connection device 13 as an auxiliary device for strengthening resistance to earthquake forces and assisting in construction ) is used. Such a conventional anti-swaying brace 10 for earthquake-resistant design has many related parts and is heavy, so the effect of the applied load is large, and the installation work is cumbersome and difficult, and the construction cost increases.

On the other hand, the longitudinal brace prevents movement in the direction parallel to the pipe axis (Y-axis direction) due to horizontal seismic load. A brace 10 is installed on the surface. However, it is not easy to embed anchor bolts 3 vertically above the previously installed pipeline and install braces 10. In particular, when the space between the ceiling 1 and the pipe line is narrow, it is virtually difficult to install the brace 10 vertically above the pipe line.

Therefore, referring to FIG. 2, when the space between the ceiling (1) and the pipe (5) is narrow, the anchor bolt (3) is embedded in a side position spaced from the load acting surface of the pipe line, and the shaking prevention brace (10) ) to fix the pipe 5 (hereinafter referred to as "side fixing" for convenience of description). In the illustrated example, a riser clamp is used as the pipe connecting device 13, and the pipe 5 is fixed by fastening bolts 13a to the flanges 13b protruding on both sides of the riser clamp, thereby preventing shaking. 10) is installed apart by the distance (L: see FIG. 1) between the pipe 5 and the bolt 13a. However, in this case, since the load acting surface and the fixing point of the pipe 5 are different, the moment increases, so the installation state and reliability of the parts deteriorate.

The present invention has been made to solve the above problems, and when the working space between a building structure and a pipe line is narrow, it is possible to install it in a position closer to the vertical side of the pipe line, and to protect from external shocks such as earthquakes. It aims to provide an anti-sway brace whose structure is simplified to minimize the effect of the transmitted loads.

Anti-shake brace according to the present invention to achieve the object as described above, the building attachment device is fixed to the building structure; Supports coupled to and fixed to the building attachment device; a lower clamp having a first straight portion coupled to the support, and a first circular arc portion extending from the first straight portion and formed in an arc shape to surround and support an outer surface of the pipe; A second straight part having one side movably inserted into and fixed to the first straight part of the lower clamp, and a second arc part formed in an arc shape extending from the second straight part to surround and support the outer surface of the pipe upper clamp to; And by pulling the second circular arc as the other side of the upper clamp, the pipe is pushed between the first straight part and the second straight part between the upper clamp and the lower clamp. Tightening to apply a clamping force so that pressing force can be generated in the pipe It is characterized in that it includes; bolt.

Since the anti-shake brace according to the present invention does not have a separate adapter between the building attachment device, the support rod, and the pipe connection device, the number of parts is reduced, the structure is simplified and light, and the bolting work is reduced, so it is economical. In addition, since the installation position can be easily checked in a provisionally assembled state, a separate tape measure is unnecessary, and since it is light, it is easy to work in a narrow installation environment. In addition, it is possible to secure the reliability of installation and parts by minimizing the generation of moment due to side fixing. In addition, as the tightening bolt is tightened, the pipe is pushed in between the first straight portion and the second straight portion, and it is possible to use it as a simple but earthquake-resistant pipe support between the structures by a wedge action.

1 is a side view showing a longitudinal brace in which a pipe connection device and a support are installed on the same load acting surface as a conventional anti-shake brace;
2 is a side view showing a longitudinal brace in which a pipe connection device and a support are installed on different load acting surfaces as a conventional anti-shake brace;
3 is an exploded perspective view showing an anti-shake support as a preferred embodiment according to the present invention;
Figure 4 is a combined perspective view showing the anti-shake brace of Figure 3,
5 is a side view of the anti-shake brace of FIG. 4 in the longitudinal direction;
6 is a side view showing a pipe connection device of an anti-swaying brace as an embodiment according to the present invention;
Figure 7 shows the fastening state of the tightening bolt, Figure 7a shows a side view of the tightening bolt using a nut, Figure 7b is a side view of the tightening bolt coupled to the screw hole without using a nut,
8 shows a simulation result of an anti-swaying brace as an embodiment according to the present invention.

An anti-shake brace will be described as an embodiment according to the present invention. As an embodiment according to the present invention, the anti-shake brace includes a building attachment device fixed to a building structure; Supports coupled to and fixed to the building attachment device; a lower clamp having a first straight portion coupled to the support, and a first circular arc portion extending from the first straight portion and formed in an arc shape to surround and support an outer surface of the pipe; A second straight part having one side movably inserted into and fixed to the first straight part of the lower clamp, and a second arc part formed in an arc shape extending from the second straight part to surround and support the outer surface of the pipe upper clamp to; And by pulling the second circular arc as the other side of the upper clamp, the pipe is pushed between the first straight part and the second straight part between the upper clamp and the lower clamp. Tightening to apply a clamping force so that pressing force can be generated in the pipe It is characterized in that it includes; bolt. The lower clamp includes a first flange bent outward from the first circular arc portion; The upper clamp includes a second flange bent outward from the second circular arc portion to face the first flange; And, the first flange and the second flange are fixed by the tightening bolt. Preferably, the second arc portion has a smaller arc length than that of the first arc portion. A slot is formed in the first straight portion; Preferably, the second straight part is inserted into the slot so as to be movable back and forth or up and down and fixed to the first straight part. The building attachment device includes a flat plate-shaped building coupling part fixed to a building structure, and a flat plate-shaped support coupling part having a shape bent from the building coupling part; Further, the support is preferably fastened with bolts so that the installation angle can be changed between the building attachment device and the lower clamp by facing the support coupling part and the first straight line part. The first straight portion is preferably coupled in parallel with the support in the longitudinal direction.

Hereinafter, an anti-shake brace will be described in more detail as a preferred embodiment according to the present invention with reference to the accompanying drawings.

Figure 3 shows an exploded perspective view of an anti-shake brace as a preferred embodiment according to the present invention, Figure 4 shows a combined perspective view of the anti-shake brace of Figure 3, and Figure 5 is an anti-shake brace of FIG. It shows a side view in the longitudinal direction of

Referring to Figures 3 to 5, as a preferred embodiment according to the present invention, the anti-shake prop (T) includes a building attachment device 100, a support 200 and a pipe connection device 300.

As an example, the building attachment device 100 is composed of a building coupling part 110 and a support base coupling part 120 by dividing a substantially rectangular flat plate into two parts. Bolt holes 111 and 121 are formed in the building coupling portion 110 and the support coupling portion 120 so that bolts can be accommodated therein, and the support coupling portion 120 is bent at approximately 90 degrees from the building coupling portion 110. is making up Accordingly, the building coupling part 110 is, for example, fastened with a nut to an anchor bolt embedded in a concrete slab and firmly fixed, and the support coupling part 120 is connected to the support 200 and, for example, the bolt 100a and the nut 100b. It is fixed. Here, the building attachment device 100 is fixed to a slab of a building among building structures, or has been described as an example of a flat plate-shaped bending shape or a fastening method by bolts and nuts, but variously known structures in the field to which the present invention belongs. device can be used, and it can be fixed to the steel structure of a building, or it can be fixed by using a separate part as an auxiliary, or it can be fastened simply by forming a screw thread without a nut, which is obvious to those skilled in the art, so for convenience of description, the detailed description is omit

As an example, the support 200 is made of a substantially rectangular flat plate, and bolt holes 210 and 220 are formed on the upper and lower portions, respectively, so that the upper side is a building attachment device using bolts 100a, 200a and nuts 100b, 200b. 100, and the lower side is coupled to the pipe connecting device 300, respectively. Although the illustrated example shows the 0° position for convenience of description, the installation angle can be changed to 30°, 45°, 60° or 90° depending on the installation environment of the pipeline (see FIG. 4), In this case, the bolts 100a and 200a and the nuts 100b and 200b are released, the angle of the support 200 is adjusted according to the installation angle, and the bolts 100a and 200a and the nuts 100b and 200b are tightened and fixed. In addition, the lower end of the support 200 has a round shape whose radius r is the distance from the center of the bolt hole 220 to the cross-sectional extension portion 321a of the second straight portion 321 of the upper clamp 320. It is preferable to make it so that the installation angle can be freely changed while minimizing the distance from the cross-sectional extension part 321a of the second straight part 321. Here, the support 200 is preferably a flat plate for weight reduction and convenience of installation, but a support 200 such as "H" or "I" section may be used, and simply threaded without nuts 100b and 200b. It can be formed and fixed by fastening with bolts 100a and 200a, which is obvious to those skilled in the art, so a detailed description thereof will be omitted for convenience of description.

The pipe connecting device 300 is a lower clamp 310 coupled to the support 200 to support the pipe (P: see FIG. 6), and an upper clamp movably inserted into and fixed to the lower clamp 310. 320, and a tightening bolt 330 that pulls one side of the upper clamp 320 and applies a tightening force so that a pressing force can be generated in the pipe P between the lower clamp 310 and the lower clamp 310.

The lower clamp 310, when viewed separately for convenience of explanation, includes a first straight portion 311, a first circular arc portion 312, and a first flange 313 as an example. Here, the lower clamp 310 may be separately manufactured and integrally combined, but it is preferable to integrally mold a flat plate as shown in the example for processing, molding, or mechanical properties.

As an example, the first straight portion 311 has a bolt hole 314 formed at the upper end, and through the bolt hole 314, the bolt 200a and the nut 200b are used to face each other with the support 200. In the closed state, they are mutually coupled, and a rectangular slot 311a is formed on the lower side of the bolt hole 314, and the cross-sectional extension 321a of the upper clamp 320 is received and caught in the slot 311a, thereby lowering the clamp ( 310) is coupled with the upper clamp 320. The slot 311a has a vertical rectangular shape, and the upper clamp 320 and the lower clamp 310 can be opened by moving the second straight part 321 of a long shape to be described later in the front and back and up and down. (See FIG. 6). Here, the bolt hole 314 is used as a through hole in which the bolt 200a is accommodated, but a screw thread is formed to form a screw hole. As such, it may be directly fastened with the bolt 200a and fixed without the nut 200b, and the rectangular slot 311a is shown, but if the second straight portion 321 can move, its shape can be changed in various ways. . In addition, the slot 311a may be formed by extending into the first arc portion 312, but since the bearing capacity of the pipe (P: see FIG. 6) of the first arc portion 312 may be reduced, the pipe P and It is preferable not to form the contacting first circular arc portion 312 . In addition, as shown in FIG. 5, although the first straight portion 311 shows an example in which the support 200 is fixed in a state facing each other, substantially coupled in parallel in the longitudinal direction (Y-axis direction) If it is, it is obvious to those skilled in the art that it can be changed in various ways, such as changing its location or changing its shape, so a detailed description thereof will be omitted.

The first circular arc portion 312 is formed to extend from the first straight portion 311 as an example, and is formed in an arc shape to surround and support the lower outer circumferential surface of the pipe P. In addition, the first flange 313 is formed by bending outwardly from the first circular arc portion 312, and has a bolt hole 315 therein, so that it is mutually coupled with the second flange 323 to be described later.

The upper clamp 320, as an example, is manufactured by integrally molding a flat plate, and for convenience of explanation, the second straight portion 321, the second arc portion 322, and the second flange (323).

As an example, the second straight portion 321 has a substantially "T" shape, and has a relatively reduced cross section compared to the expanded cross section 321a and the expanded cross section 321a, which have a relatively expanded cross section. The cross-sectional reduction portion 321b forming the formed shape has an integral shape. In addition, it is preferable that the second straight portion 321 has a shape that is constricted toward the first arc portion 312 in order to increase the wedge action. It is inclined on a line orthogonal to the first straight portion 311, and in the illustrated example, the inclination angle α is 10° (see FIG. 5). In another example, the arc of the first arc portion 312 When the slot 311a is formed slightly below the top of the virtual circle (a circle formed by a broken line in FIG. 5) overlapping with the tightening bolt 330, the first straight portion 311 is The first circular arc portion 312 may have a folded shape.

The cross-sectional extension portion 321a has, for example, a width greater than that of the slot 311a and a width smaller than the vertical length of the slot 311a. The cross-sectional extension part 321a is inserted into the rectangular slot 311a and turned to be hooked and fixed to the first straight part 311. ) is useful because it does not easily deviate from Here, the cross-sectional extension portion 321a and the slot 311a can be changed in various ways known in the art. As an example, when the "ㅗ" shaped slot 311a is used, the cross-section is directly expanded from the lower side. The portion 321a may be inserted and lifted so as to be caught and fixed to the first straight portion 311 . However, in this case, it is preferable to use the straight longitudinal slot 311a because it may be unintentionally dislodged due to the weight of the upper clamp 320 during movement or work, which may be inconvenient, especially when working in a narrow space.

Figure 6 shows a side view of a pipe connection device of an anti-swaying brace as an embodiment according to the present invention.

4 to 6, the reduced cross-sectional portion 321b has, for example, a width smaller than that of the slot 311a, a virtual circle corresponding to the arc shape of the first arc portion 312. It is preferable to elongate it in a long shape about the radius of . Here, the cross-sectional reduction portion 321b is spread between the first circular arc portion 312 as it moves back and forth or moves up and down in the slot 311a so that the pipe P can be inserted and detached, and the pipe It is advantageous because it can be easily detached from (P) to increase the convenience of work. In addition, the illustrated example is an example that can be opened between the slot 311a by having a long shape, and can be changed to various shapes, and its thickness or length can be appropriately adjusted according to the environment, which is suitable for those skilled in the art Since it is self-evident, a detailed description thereof is omitted.

The second circular arc portion 322, as an example, has a shape in which the cross section is expanded to a width larger than the width of the cross-sectional reduction portion in order to increase the rigidity and increase the contact area with the pipe (P), and the outside of the pipe (P) It is formed in an arc shape so as to surround and support the side surface, and has substantially the same curvature as the first arc part 312 and serves to pressurize the pipe P together with the first arc part 312. Here, the first circular arc portion 312 is capable of supporting the pipe P from the lower side, and the second circular arc portion 322 pressurizes the pipe P from the upper side along with the second straight portion 321. Since it forms a structure, the second arc portion 322 has a smaller arc length than the arc of the first arc portion 312. In addition, in order to push the pipe (P) between the second straight portion 321 and the first straight portion 311 to be firmly fixed by a wedge action, the arc length of the first arc portion 312 is the length of the pipe (P) It is smaller than 1/2 of, and the arc length of the second arc portion 322 has a length smaller than 1/4 of the pipe (P).

As an example, the second flange 323 is formed by bending outward from the second circular arc portion 322, and has a bolt hole formed so as to face the first flange 313 of the lower clamp 310. It is fixed with a tightening bolt 330 through a through hole. Here, the tightening bolt 330 may be inserted into the bolt holes of the first flange 313 and the second flange 323 and fastened with the nut 340 to fix it, but the bolt hole of the second flange 323 has a screw thread. It is beneficial to more effectively transmit the clamping force and more uniformly generate the pressing force to fasten the tightening bolt 330 to the screw hole 324 without using the nut 340 with the formed screw hole 324.

7 shows a fastening state of the tightening bolt, Figure 7a shows a side view of the tightening bolt using a nut, Figure 7b shows a side view of the tightening bolt coupled to the screw hole without using a nut. Here, for convenience of description, a state before pressurizing the pipe P is shown as a broken line, and a state after pressurizing the pipe P is shown as a real battle.

Referring to FIG. 7A, in a state where the pipe P is located between the lower clamp 310 and the upper clamp 320, the bolt holes 315 and 325 of the first flange 313 and the second flange 323 When the tightening bolt 330 is inserted and filled with the nut 340 and fixed, the first flange 313 and the second flange 323 correspond to the free ends, and also the bolt holes 315 and 325 and the tightening bolt 330 ) Since there is a gap between the tightening bolts 330, even if the tightening force of the tightening bolt 330 is increased, the first flange 313 and the second flange 323 deflection due to the bending force rather than the transmission of the tightening force, so that the flange and the tightening bolt As the 330 are shifted, they are deformed or twisted, so that the clamping force cannot be effectively transmitted to the upper clamp 320, and a uniform pressing force or effective close fixing cannot be expected according to the deformation.

Meanwhile, referring to FIG. 7B , in a state where the pipe P is located between the lower clamp 310 and the upper clamp 320, the tightening bolt 330 is inserted into the bolt hole 315 of the first flange 313. When screwing directly into the screw hole 324 of the second flange 323, the first flange 313 of the lower clamp 310 corresponds to the free end and has a gap, so some deflection occurs due to bending force. and transformation occurs. However, since the second flange 323 of the upper clamp 320 is screwed with the tightening bolt 330, the gap can be substantially ignored, and even if it corresponds to the free end, the distance between the bolt head and the screw thread is kept constant. Therefore, the second flange 323 of the upper clamp 320 continues to tense the second straight portion 321 or pull the second arc portion 322 until it yields to pressurize the pipe P. Accordingly, the tightening bolt 330 can more effectively transmit the clamping force to the upper clamp 320, and since the bending of the second flange 323 can be reduced, a more uniform pressing force and effective Close fixation can be expected.

As one embodiment of the anti-shake brace (T) according to the present invention, the installation process will be described.

3 and 4, the support 200 and the building attachment device 100 are fixed with bolts 100a and nuts 100b to suit the installation angle according to the working environment to prepare for work. Next, the cross-sectional extension part 321a of the upper clamp 320 is vertically inserted into the slot 311a of the lower clamp 310 and rotated so that the upper clamp 320 is caught on the lower clamp 310 .

Next, the reduced section 321b is pushed forward into the slot 311a and lifted up to open the upper clamp 320 from the lower clamp 310 (see FIG. 6). At this time, the second arc portion 322 Since is smaller than the arc of the first circular arc portion 312 and the second straight portion 321 is formed long, the pipe P can be inserted into the lower clamp 310 in the “A” direction. (See FIG. 6) Next, the pipe (P) is placed in the first circular arc portion 312 of the lower clamp 310 (see FIG. 6).

Next, after connecting the building attachment device 100 and the support 200, place it between a building structure such as a ceiling or an iron beam and the lower clamp 310 to check and mark the embedding position of the anchor bolt, and of the purchase and construction work. Next, the building attachment device 100 is inserted into the anchor bolt and fastened with a nut to fix it, and the bolt 200a and the nut ( 200b) to fix it. Finally, the tightening bolt 330 is screwed into the screw hole 324 of the second flange 323 of the upper clamp 320 through the bolt hole 315 of the first flange 313 of the lower clamp 310. Tighten firmly to complete the installation.

As described above, since the anti-shake prop (T) according to the present invention does not require a separate adapter between the building attachment device 100 and the support 200, and between the support 200 and the pipe connection device 300, the number of parts is reduced. , The structure is simple and light, and it is economical because the bolting work is reduced. In addition, since the lower clamp 310 is located on the pre-installed pipe line and the installation position can be easily checked in the state where the support 200 and the building attachment device 100 are temporarily assembled, a separate tape measure is unnecessary and narrow because it is light. It makes work easier in one installation environment.

On the other hand, in the case of installing the anti-swaying brace (T) in a narrow space, it is inevitable to allow side fixing of the pipe (P). It is necessary to minimize the separation distance to the pipe (P). In the case of the anti-swaying brace (T) according to the present invention, since the fixing point can be located at a position in contact with the pipe (P), the separation distance to the pipe (P) is reduced and the acting moment is reduced, thereby reducing the installation state and component reliability can be obtained.

8 shows a simulation result of an anti-swaying brace as an embodiment according to the present invention. Here, Dassault Systems' Catia V5 program was used for the simulation under the condition that M12 bolts were tightened at 80N.

5, 7 and 8, in the anti-shake brace (T) according to the present invention, as the tightening bolt 330 is tightened, the first straight portion 311 and the second straight portion 321 A wedge action occurs, and the first arc portion 312 and the second arc portion 322 pressurize the pipe P in close contact, and the tightening bolt 330 is attached to the second flange of the upper clamp 320 ( 323) and continue to pull the upper clamp 320 until it yields, thereby forming the first straight part 311 and the second straight part 321, the first arc part 312 and the second arc part 322 ) By fixing the pipe (P) more firmly between them, it is possible to use it as an earthquake-resistant anti-shake brace (T) despite its simple and simple structure.

As described above, the anti-shake brace according to the present invention has been shown and described in more detail as an embodiment as specific content for carrying out the invention, but is not limited thereto, rather the technical idea defined by the appended claims and Within its scope, it should be understood to include all modifications or equivalents or substitutes thereof.

T: anti-shake brace 100: building attachment device
110: building coupling part 120: support coupling part
200: support 300: pipe connection device
310: lower clamp 311: first straight part
311a: slot 312: first arc part
313: first flange 314: bolt hole
315: bolt hole 320: upper clamp
321: second straight portion 321a: cross-section extension portion
321b: cross-sectional reduction portion 322: second arc portion
323: second flange 324: bolt hole
324a: screw hole 330: tightening bolt
P: Plumbing

Claims (6)

A building attachment device fixed to a building structure;
Supports coupled to and fixed to the building attachment device;
a lower clamp having a first straight portion coupled to the support and a first circular arc portion extending from the first straight portion and formed in an arc shape to surround and support an outer surface of the pipe;
A second straight part having one side movably inserted into and fixed to the first straight part of the lower clamp, and a second arc part extending from the second straight part and formed in an arc shape to surround and support the outer surface of the pipe upper clamp to; and
As the other side of the upper clamp, by pulling the second arc portion, the pipe is pushed between the first straight portion and the second straight portion between the upper clamp and the lower clamp, and a tightening force is applied so that pressing force can be generated in the pipe. Tightening bolt ; Anti-swaying brace of the pipe, characterized in that it comprises a.
According to claim 1,
The lower clamp includes a first flange bent outward from the first circular arc portion;
The upper clamp includes a second flange bent outward from the second circular arc portion to face the first flange; and
The first flange and the second flange are anti-swaying braces for piping, characterized in that fixed by the tightening bolt.
According to claim 1,
The second circular arc,
Anti-shake brace of the pipe, characterized in that it has a smaller arc length than the arc of the first arc portion.
According to claim 1,
A slot is formed in the first straight portion;
The second straight part is inserted into the slot so as to be movable back and forth or up and down, and is fixed to the first straight part.
According to claim 1,
The building attachment device,
A flat plate-shaped building coupling part fixed to a building structure, and a flat plate-shaped support coupling part having a shape bent from the building coupling part; and
the support,
The anti-swaying brace of the pipe, characterized in that the support coupling part and the first straight line part are fastened with bolts, respectively, so that the installation angle can be changed between the building attachment device and the lower clamp.
According to claim 5,
The first straight line portion,
Anti-swaying brace of the pipe, characterized in that coupled in parallel with the support in the longitudinal direction.