JP2010031940A - Pipe bracing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe bracing device capable of providing sufficient strength with a simple structure. <P>SOLUTION: This pipe bracing device 1 is used for bracing of a main pipe 2 arranged in a building, and includes a shock absorbing material 30 arranged so as to face a part of the outer periphery of the main pipe 2 in a state of arranging the pipe bracing device 1, an arm part 10 supporting the shock absorbing material 30 and having an interface surface 14 for frictional joining, and a base part 20 fixed to a floor 9 in the vicinity of the main pipe 2 and having an interface object surface 24 frictionally joined to the interface surface 14 for joining the arm part 10. The frictionally joined interface surface 14 and interface object surface 24 substantially coincide with a surface passing through the axis of the main pipe 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a piping anti-vibration device used for anti-vibration of piping installed in a building.

  Conventionally, as a device for supporting the horizontal load of a vertical pipe extending in the vertical direction, a pedestal arranged around the vertical pipe, a circular or polygonal frame member installed on the pedestal and surrounding the vertical pipe, and the frame member There is a vibration buffering support device that includes an adjustment arm connected to the frame member, and a buffer member that is attached to the frame member and inserted between the armature tube (see Patent Document 1).

Also, there is a pipe mounting bracket that includes a support frame formed in an annular shape and a bolt with an elastic body attached to the head, and this bolt is attached to the support frame so that the head is positioned in the center direction (patent) Reference 2).
No. 2-316655 Japanese Utility Model Publication No. 47-038285

  Conventionally, horizontal pipes have been installed horizontally for the purpose of preventing the flow noise and vibration of the fluid in the pipe from propagating to the building structure, and for keeping the pipe safely in the event of large vibrations of the building structure caused by earthquakes, etc. A device is used to limit the deflection in the direction. For example, a pipe anti-vibration device installed for such a purpose is provided on a steel frame shaped steel frame that is assembled in a cross girder so as to surround a steel pipe, a diagonal member mounted inside the cross girder, and a diagonal member. Some of them have anti-vibration rubber that stops the horizontal vibration of the pipe. FIG. 7 is a plan view showing an outline of the configuration of such a conventional pipe anti-vibration device. When such a pipe bracing device is used, the force transmission path when the soot tube shakes is in the following order: soot tube, anti-vibration rubber, diagonal material, shape steel, base plate, anchor bolt, floor.

  However, such a pipe bracing device is not unitized because it is necessary to enclose the steel pipe with the shape steel and the diagonal material, and it is necessary to perform a welding operation in the on-site assembly. For this reason, in order to install such a pipe anti-vibration device for a steel pipe, welding equipment is required on each floor of the building. In addition, there are problems that it is difficult to carry a long steel material using an elevator or the like, and that much time is required for assembly.

  In addition, as disclosed in Patent Document 1 and Patent Document 2, a frame member and a support frame surrounding the pipe are installed, and the damping of the pipe is performed using a cushioning material attached directly or indirectly to the frame. There is a device to do. However, even in such a device, there is a problem that the device itself becomes large in order to secure the strength of the frame member and the support frame in the force transmission path when the soot tube swings, and the structure is complicated and the number of parts There was a problem that there were many.

  In view of the above-described problems, an object of the present invention is to provide a piping anti-vibration device having a simple structure and sufficient strength.

  In order to solve the above-described problems, the present invention has a structure in which an arm portion supporting a cushioning material and a base portion fixed to a floor are joined by friction joining, and the vibration of the main pipe is transmitted to the floor by friction. This makes it possible to provide a piping anti-vibration device that is simple and can provide sufficient strength.

  Specifically, the present invention is a pipe anti-vibration device used for anti-vibration of a main pipe installed in a building, and faces the part of the outer periphery of the main pipe with the pipe anti-vibration apparatus installed. A cushioning material arranged in such a manner, an arm portion supporting the cushioning material and having a joining surface for friction joining, and the joining surface fixed to the floor near the main pipe and joining the arm portion And a base portion having a surface to be joined that is friction-joined, and the joining surface and the surface to be joined that are friction-joined are substantially the same as a surface passing through the axis of the main pipe.

  In the present invention, the main pipe is a pipe of a common part before branching to a branch pipe arranged in each floor or room among pipes in a building, and does not necessarily indicate only a pipe extending in the vertical direction. . The pipe anti-vibration device according to the present invention is provided for such a main pipe, and is intended to prevent the flow noise and vibration of the fluid in the pipe from propagating to the building structure, or in the case of a large shake caused by an earthquake or the like. This is a device mainly for restricting the horizontal deflection of the main pipe for the purpose of holding the pipe safely.

  The buffer material is a member for directly buffering the vibration of the main pipe by coming into contact with the main pipe. For example, rubber or a spring can be used. The cushioning material is disposed so as to face a part of the outer periphery of the main pipe in a state in which the pipe anti-vibration device according to the present invention is installed. Here, the interval between the buffer material and the outer periphery of the main pipe may be an interval at which the buffer material and the outer periphery of the main pipe come into contact with each other when the deflection of the main pipe becomes equal to or larger than a predetermined swing width, or the main pipe is not shaken. May be in contact.

  In the pipe anti-vibration device according to the present invention, the arm portion that supports such a cushioning material and the base portion fixed to the floor near the main pipe are joined by friction joining between the joining surface and the surface to be joined. The The joining surface and the to-be-joined surface relating to the friction welding substantially coincide with a surface passing through the axis of the main pipe. In other words, according to the present invention, when the force transmitted to the buffer material is received by the frame installed around the main pipe, the force is transmitted by such a friction joint surface. For this reason, according to the present invention, it is possible to provide a piping anti-vibration device that greatly simplifies the configuration of the entire device and reduces the number of parts without impairing the reliability of the piping anti-vibration device. It is.

  In addition, in the conventional similar devices, the structure is complicated and the number of parts is large, so that it takes a lot of time to assemble, and because the frame member and support frame surrounding the pipe are used, the installation of the pipe There was a problem that it was necessary to be installed prior to. However, the piping anti-vibration device according to the present invention is simplified in configuration and has a reduced number of parts, so that it is easy to install and does not require a frame surrounding the main pipe. Even after the main pipe is installed, it can be easily installed.

  The distance between the cushioning material and the main pipe may be adjusted according to the joining position between the joining surface and the joined surface. That is, since the pipe anti-vibration device according to the present invention joins the arm portion and the base portion by friction joining, the distance between the buffer material and the main pipe can be adjusted by setting the joining position.

More specifically, in the pipe bracing device according to the present invention, the joining surface and the joined surface are friction-joined using a high-strength bolt, and the base portion has a fastening position of the high-strength bolt. You may have an adjustable bolt hole in the radial direction of the main pipe. By doing in this way, the distance of a buffer material and a main pipe can be adjusted with the fastening position of a high strength volt | bolt. For example, by setting at least one of the bolt holes on the arm part side or the base part side as a horizontally long bolt hole, the fastening position of the high strength bolt can be arbitrarily set within the horizontally long range of this bolt hole, and The position where the arm part is joined to the fixed base part, and the distance between the buffer material and the outer periphery of the main pipe can be adjusted. However, other specific configurations may be adopted as a specific configuration for enabling selection of the fastening position of the high strength bolt. For example, the fastening position of the high-strength bolt can be selected by providing a plurality of selectable bolt holes in at least one of the arm part and the base part.

  The base portion may have a plurality of surfaces to be joined for joining a plurality of the arm portions used for swinging a plurality of main pipes installed adjacent to each other. In other words, the base portion may be shared by the arm portion used for shaking the adjacent main pipe. By doing in this way, the installation area of the base part in a floor can be suppressed, and the area of the pipe space in a building can be made small. That is, according to the present invention, it is possible to reduce the area of the pipe space and improve the rentable ratio of the building.

  In addition, the base part to which the plurality of arm parts used for swinging two main pipes installed adjacent to each other is joined to the two main pipes in the floor near the two main pipes. You may fix to the position shifted | deviated to the outer side of this area | region rather than the center of the area | region pinched | interposed. Since the pipe anti-vibration device according to the present application does not require a frame member, unlike the conventional pipe anti-vibration device, the base portion can be fixed at a position other than the center of the region sandwiched between the main pipes in this way. It is. And since a base part is not fixed to the center of the area | region pinched | interposed into the main pipe, the space | interval of adjacent main pipes can be narrowed. As a result, the area of the pipe space can be reduced, and the rentable ratio of the building can be improved.

  In addition, the arm portion may include a joint portion provided with the joint surface and a shock absorber installation portion that is joined to one end of the joint portion and provided with a plurality of the shock absorbers. By installing multiple cushioning materials on one arm part, it faces the outer periphery of the main pipe in order to suppress the main pipe runout while keeping the area and space required for installation of the base part and arm part small. Many cushioning materials can be installed. And by installing a plurality of cushioning materials for one arm in this way, it is possible to increase the area of the cushioning material facing the main pipe for buffering vibrations, and it is effective for flowing sound and vibration The main pipe can be held more safely.

  According to the present invention, it is possible to provide a pipe rocking device having a simple structure and sufficient strength.

  DESCRIPTION OF EMBODIMENTS Embodiments of a pipe suspension device according to the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view showing a pipe anti-vibration device 1 according to this embodiment, and FIG. 2 is a side view showing the pipe anti-vibration device 1 according to this embodiment. Here, FIG. 1 and FIG. 2 show the pipe anti-vibration device 1 in a state installed on the main pipe 2. The pipe steadying device 1 is fixed around the edge of the opening 91 provided in the floor 9 for allowing the main pipe 2 to pass therethrough, and the shock absorber 30 is provided facing the outer periphery of the main pipe 2, so that the main pipe 2 can be shaken. This is a device for buffering and transmitting the deflection force of the main pipe 2 to the floor 9 (building structure). In this embodiment, the piping anti-vibration device 1 suitable for large-diameter piping of 300A or more is provided. The pipe anti-vibration device 1 includes a buffer material 30, an arm unit 10 that supports the buffer material 30, and a base unit 20 to which the arm unit 10 is fixed.

In the present embodiment, the base portion 20 includes a base base portion 21 that is fixed to the floor 9 by using anchor bolts 40, and a standing portion 22 that is erected on the base base portion 21. The standing portion 22 is a plate-like metal member, and one surface thereof is a surface to be joined 24 used for joining with the arm portion 10 (see FIG. 3). A bolt hole 23 is provided near the center of the surface 24 to be joined of the standing portion 22. The bolt hole 23 is aligned with the bolt hole 13 provided in the arm portion 10 and is a bolt hole 23 for friction joining using the high strength bolt 50. The bolt hole 23 is a long hole extending in the radial direction of the main pipe 2 so that the joining position of the arm portion 10 can be arbitrarily set. By doing in this way, the installation operator can arbitrarily select the fastening position of the bolt within the horizontally long range of the long hole.

  In this embodiment, the arm part 10 is welded to the joining part 11 having the joining surface 14 for joining to the joined surface 24 of the base part 20 using the high-strength bolt 50 and the end on the main pipe 2 side. And a cushioning material installation section 12. A bolt hole 13 is provided near the center of the joint surface 14. The bolt hole 13 is a bolt hole 13 that is aligned with a bolt hole 23 provided in the base portion 20 and is friction-joined using a high-strength bolt 50. Is a long hole that can be arbitrarily set. Since the bolt hole 13 is a long hole, it is possible to arbitrarily set the joining position when joining the arm part 10 to the base part 20, and thus the distance between the outer periphery of the main pipe 2 and the buffer material 30.

  Moreover, since the distance between the outer periphery of the main pipe 2 and the buffer material 30 can be set, according to the pipe anti-vibration device 1 according to the present embodiment, it is possible to finely adjust dimensional distortion due to construction errors at the construction site. . However, other means may be employed as a means for enabling the distance between the outer periphery of the main pipe 2 and the buffer material 30 to be set. What is necessary is just to be provided in any one of the arm part 10 or the base part 20. FIG.

  The cushioning material installation portion 12 is a plate-like member whose one side (the opposite surface to the one side is a surface to which the joint portion 11 is welded. Details will be described later) are inward in the vicinity of the center thereof. It is formed by being bent (toward the main pipe 2) (in this embodiment, an angle of about 33.2 degrees). By this bending, the one surface of the plate-shaped member forms two planes that are substantially parallel to the tangent line on the outer periphery of the main tube 2. When such a buffer material installation portion 12 is connected to one end of the joint portion 11, two buffer materials 30 that can be installed with respect to the main pipe 2 in one arm can be provided, and when the main pipe 2 swings. In addition, the area of the member in contact with the main pipe 2 of the member that buffers and suppresses the vibration of the main pipe 2 can be increased. The arm portion 10 is created by welding the buffer material installation portion 12 to the end of the joint portion 11 on the back surface of the bent portion. Moreover, the buffer material installation part 12 is provided with a screw hole for fixing the buffer material 30 with a screw. In the present embodiment, the cushioning material 30 is fixed to the cushioning material installing portion 12 using a fixing means such as a screw and adhesion.

  In the present embodiment, the cushioning material 30 is a member in which a round vibration-proof rubber 31 and a rubber 32 having a spring constant different from that of the round vibration-proof rubber 31 are bonded together. In the present embodiment, by providing a rubber 32 having a lower spring constant than the round anti-vibration rubber 31 at a portion facing the main pipe 2 of the round anti-vibration rubber 31, the main pipe 2 can be attached even by a large shake due to an earthquake or the like. It is possible to reduce the flow noise in the main pipe 2 while keeping it safe. More specifically, in the present embodiment, the rubber 32 having a predetermined spring constant that is excellent in reducing vibrations having a frequency that is large in the flow noise and vibration of the fluid in the pipe, reduces the vibration to the fluid in the pipe and the like. The normal vibration caused is reduced, and when the vibration becomes larger than a predetermined value, the vibration is large due to the circular vibration-proof rubber 31 having a spring constant excellent in resistance to a large load. The main pipe 2 is kept safe even against a large load caused by the above.

Further, in the present embodiment, the pipe anti-vibration device 1 is configured so that the joining surface 14 and the joined surface 24 substantially coincide with the surface passing through the axis of the main pipe 2 (in other words, the joining surface 14 and the joined surface 24. The direction in which the surface extends passes through the axis of the main pipe 2). That is, in the pipe anti-vibration device 1 according to the present embodiment, the friction surface that frictionally joins the arm portion and the base portion substantially coincides with the surface passing through the axis of the main pipe 2. By installing the pipe steadying device 1 in this way, it becomes possible to transmit the force due to the vibration of the main pipe between the arm part 10 and the base part 20 by the friction of the friction surface, and the main pipe 2 is shaken. In this case, the force transmission path is in the order of the main pipe 2, the buffer material 30, the arm part 10, the base part 20, the anchor bolt 40, and the floor 9. That is, according to the pipe anti-vibration device 1 according to the present embodiment, it is possible to provide a pipe anti-vibration device that can obtain sufficient strength with a small number of parts.

  FIG. 4 is a side view for showing an unpainted portion of the inner surface (a mating surface for joining the arm portion 10 and the base portion 20) of the pipe bracing device 1 according to the present embodiment, and FIG. It is a side view for showing the non-coating part of the outer surface of the piping bracing apparatus 1 which concerns on a form. 4 and 5, hatched portions in the drawings indicate unpainted portions, that is, portions where painting is not performed. As shown in FIG. 4, the joining surface 14 of the arm part 10 and the to-be-joined surface 24 of the base part 20 are not painted. Similarly, as shown in FIG. 5, of the back surface of the joint surface 14 of the arm portion 10, the portion of the edge of the bolt hole 13 that contacts the head or nut of the high-strength bolt and the back surface of the surface to be joined 24 of the base portion 20. Of these, the portion of the edge of the bolt hole 23 that contacts the head or nut of the high-strength bolt is not painted. The unpainted portion is preferably a rough surface. For example, the fixing force by friction can be increased by making the unpainted portion rusted rough surface. In this way, the portion where the frictional force for the frictional joint is generated is unpainted, and the fixing force due to friction is set to a predetermined or higher fixing force that can ensure safety even by a large shake such as an earthquake.

  Next, the installation method in the case of providing the pipe anti-vibration device 1 according to the present embodiment with respect to the main pipe 2 will be described. FIG. 6 is a plan view showing a state in which the pipe anti-vibration device 1 is installed on the main pipe 2 installed side by side in the present embodiment. In the figure, a state in which the pipe anti-vibration device 1 is installed with respect to the four main pipes 2 installed side by side is shown. Here, in the present embodiment, eight buffer members 30 are installed for one main pipe 2, and the four arm portions 10 surround the main pipe 2 in order to support these eight buffer members 30. It has become.

  The base portion 20 is not fixed to the area sandwiched between the adjacent main pipes 2 but is fixed to a position shifted outward from the center of the area sandwiched between the two adjacent main pipes 2. By fixing the base portion 20 at such a position, the base portion 20 is fixed between the portions where the outer peripheries of the adjacent main pipes 2 are closest to each other (the position where the surface connecting the axes of the adjacent main pipes 2 passes). There is no such thing, and the interval between the main pipes 2 can be narrowed. That is, according to the present embodiment, it is possible to install the main pipes 2 more densely than in the prior art, thereby reducing the pipe space in the building and improving the rentable ratio of the building.

  In the installation method shown in FIG. 6, the arm portion 10 provided around the main pipe 2 shares the base portion 20 b used for joining with the arm portion 10 provided around the other adjacent main pipe 2. To do. In other words, the base part 20b provided between the adjacent main pipes 2 (hereinafter referred to as “common base part 20b”) is configured to be able to join both the arm parts 10 provided to the respective main pipes 2. Have In the present embodiment, the shared base portion 20b has two standing portions 22 in order to join both the arm portions 10 provided to the adjacent main pipes 2. The upright portions 22 face each other at an angle of approximately 90 degrees so that the arm portions 10 for the main pipes 2 on the opposite sides of the common base portion 20b can be joined. Yes.

In the present embodiment, the four arm portions 10 are used to prevent the steady movement of the single main pipe 2, so that the arm section 10 is arranged around the main pipe 2 at every 90 degrees around the axis of the main pipe 2. Installed at intervals. That is, the joint surface 14 of the arm part 10 has an inclination of 90 degrees with respect to the joint surface 14 of the adjacent arm part 10 provided for the same main pipe 2. Furthermore, in this embodiment, in order to fix the base parts 20 and 20b to a position excluding the center of the region sandwiched between the adjacent main pipes 2, the joined surfaces 24 of the base parts 20 and 20b (joint surfaces of the arm parts 10). 14) is installed with an inclination of approximately 45 with respect to the plane connecting the axes of the adjacent main pipes 2. For this reason, the two to-be-joined surfaces 24 (standing portions 22) provided in the shared base portion 20b shared by the arm portions 10 provided for the adjacent main pipes 2 are provided at an angle of 90 degrees with respect to each other. Become. However, this configuration is a configuration that can save the pipe space most when the steadying is performed by the four arm portions 10 with respect to one main pipe 2. The optimal installation mode may be selected as appropriate depending on the form.

  According to this embodiment, it is possible to provide a piping anti-vibration device that can obtain sufficient strength with a small number of parts and low cost. In addition, no welding work occurs at the time of installation on the site, and there is no need to carry in a long steel material such as a shape steel. In addition, the piping anti-vibration device 1 according to the present embodiment is different from the conventional device including the support frame and the frame member, and the base portion 20 is divided and independent, so that the frame is attached before the piping construction. Unlike the conventional technology that was necessary, it can be installed in a timely manner after the piping work. In addition, the construction cost is one time compared to the conventional technology, which requires two steps of installation of the frame before piping construction and installation of anti-vibration rubber etc. after piping construction. The effect of being reduced can also be obtained.

It is a top view which shows the piping steadying apparatus which concerns on embodiment. It is a side view which shows the piping steadying apparatus which concerns on embodiment. It is an exploded view of the piping steadying device concerning an embodiment. It is a side view for showing the non-coating part of the inner surface (joint surface which joins an arm part and a base part) of the piping brace apparatus concerning an embodiment. It is a side view for showing the non-coating part of the outer surface of the piping bracing device concerning an embodiment. In embodiment, it is a top view which shows a mode that the piping anti-vibration apparatus was installed in the main pipe installed side by side. It is a top view which shows schematic structure of the conventional piping anti-vibration apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Piping brace 10 Arm part 14 Joining surface 20 Base part 24 Joined surface 30 Buffer material

Claims (6)

A piping anti-vibration device used for anti-vibration of a main pipe installed in a building,
A cushioning material arranged to face a part of the outer periphery of the main pipe in a state where the pipe anti-vibration device is installed;
An arm portion that supports the cushioning material and has a joining surface for friction joining;
A base portion fixed to the floor in the vicinity of the main pipe and having a surface to be joined that is frictionally joined to the joint surface to join the arm portion;
The piping anti-vibration device, wherein the joint surface and the surface to be joined that are friction-joined substantially coincide with a surface that passes through the axis of the main pipe. The distance between the cushioning material and the main pipe is adjusted by the joining position of the joining surface and the joined surface,
The piping anti-vibration device according to claim 1. The bonded surface and the bonded surface are friction bonded using a high-strength bolt,
The base portion has a bolt hole capable of adjusting a fastening position of the high-strength bolt in a radial direction of the main pipe.
The piping anti-vibration device according to claim 2. The base portion has a plurality of surfaces to be joined for joining a plurality of the arm portions used for swinging a plurality of main pipes installed adjacent to each other.
The piping anti-vibration device according to any one of claims 1 to 3. The base part to which a plurality of the arm parts used for shaking the two main pipes installed adjacent to each other is sandwiched between the two main pipes in the floor near the two main pipes. Fixed at a position shifted to the outside of the center of the region,
The piping anti-vibration device according to claim 4. The arm portion includes a joint portion provided with the joint surface, and a cushioning material installation portion joined to one end of the joint portion and provided with a plurality of the cushioning materials.
The piping anti-vibration device according to any one of claims 1 to 5.

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