Pipe support attachment

Abstract

To provide a pipe support attachment which enables use of a pipe support band which is distributed widely and conventionally and can prevent misalignment with a pipe or the pipe support band and falling of the pipe or the pipe support band without increasing the entire width.SOLUTION: A pipe support attachment 1 comprises two load transmission blocks 11a, 11b. A projection 21a is provided on an end surface 12a of the load transmission block 11a and a groove 21b in which the projection is fitted is formed on an end surface 12b of the load transmission block 11b. A projection 22a is provided on an end surface 13a of the load transmission block 11a and a groove 22b into which the projection is fitted is formed on an end surface 13b of the load transmission block 11b. The projection 22a is formed so that its tapered direction is set to be opposite to a tapered direction of the projection 21a.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a pipe support attachment that is used in conjunction with a pipe support band such as a hanging band or a standing band when supporting various types of pipes with the pipe support band. [Background technology]

[0002] In air conditioning and sanitary equipment construction, various types of piping are used depending on the application and purpose, but when installing these piping within a building, if the piping is horizontal, it is suspended from the ceiling or upper floor slab with a suspension band, and if it is a rising pipe, it is fixed to the wall with a vertical band.

[0003] Pipe support bands such as suspension bands and vertical bands are composed of a pipe insertion section made by bending a strip of steel material into a ring shape in the out-of-plane direction so that a pipe can be inserted inside it, and a pair of connecting sections extending radially from each end of the pipe insertion section so as to face each other.To support a pipe using these pipe support bands, the lower end of a connecting device fixed to the ceiling surface or the underside of the upper floor floor slab, or the tip of a connecting device fixed to the wall surface, is sandwiched between the pair of connecting sections, the pipe is inserted into the pipe insertion section, and bolts are inserted into the pair of connecting sections and tightened to hang the pipe from the ceiling or upper floor floor slab, or fixed to the wall.

[0004] Here, the weight of the pipe acts constantly as a vertical load on the pipe insertion section, which is made of strip-shaped steel, and the inertial force during an earthquake acts as a horizontal load, while these reaction forces act on the periphery of the pipe.In order to keep manufacturing costs down, the width of the steel must be limited to about 25 mm.

[0005] Therefore, the surface on which the reaction force from the pipe insertion part acts is concentrated in a narrow area of ​​the pipe, which may result in the pipe breaking if the strength of the pipe has been reduced due to corrosion, etc. Furthermore, because the pipe insertion part is made by bending a strip of steel material out of its plane, the pipe insertion part is provided with stiffening ribs in the circumferential direction to prevent so-called springback, but these irregularities appear as ridges on the outer periphery and as grooves on the inner periphery, further reducing the surface on which the load acts and causing the above-mentioned problem of more pronounced stress concentration.

[0006] Incidentally, when the piping is a metal pipe, the pipe insertion section is made of steel material coated with an electrical insulating material to prevent electrolytic corrosion. However, conventionally, the coating of the electrical insulating material has been carried out mainly by dipping, so that the electrical insulating material is merely coated along the irregularities of the stiffening rib, and the grooves described above remain visible on the inner periphery, and the problem of the reduction in the load acting surface due to the grooves is not solved at all.

[0007] In order to solve this problem, the applicant has developed a pipe support that includes a load transmission means made of a resin material that is placed between a pipe insertion portion made of a strip-shaped steel material and the pipe so that load can be transmitted between them, and that is formed so that no unevenness is apparent on the inner side of the load transmission means in a cross section including the material axis of the pipe.

[0008] With such a pipe support, the load transmission means abuts against the peripheral surface of the pipe on its inner side with a sufficient active area regardless of the cross-sectional shape of the pipe insertion portion, so that the force from the load transmission means, i.e., the reaction force against the weight of the pipe and the inertial force of the pipe during an earthquake, acts on the pipe in a dispersed state, thereby reducing the shear stress generated in the pipe and preventing stress concentration on the pipe and, ultimately, the resulting breakage.

[0009] Furthermore, in the above-mentioned pipe support device, it is desirable to manufacture it by injection molding using an insert for the portion of the strip-shaped steel material that constitutes the pipe support band that corresponds to the pipe insertion portion. However, since manufacturing can be time-consuming and costly due to the need to position the steel material relative to the mold, a new pipe support attachment that is separate from the pipe support band has been developed (Patent Document 1).

[0010] This pipe support attachment exhibits the same load transmission function as the above-mentioned pipe support tool, and can prevent stress concentration on the pipe.In addition, since it is configured to be used by fitting the pipe support band into a fitting groove formed in the load transmission block, movement of the pipe support attachment along the material axis direction of the pipe is restricted, and even in situations where vibration loads act from the pipe, there is no need to worry about the pipe support attachment shifting in the material axis direction of the pipe or falling out from between the pipe and the pipe support band, and the above-mentioned load transmission function is reliably maintained.Thus, it is possible to prevent stress concentration on the pipe in a more economical manner without having to manufacture it as a single piece with the pipe support band. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Patent Publication No. 2021-177082 Summary of the Invention [Problem to be solved by the invention]

[0012] However, the pipe support attachment described in Patent Document 1 requires a raised portion to form the fitting groove, which causes a problem in that the overall width of the pipe support attachment must be increased accordingly.

[0013] Incidentally, it is possible to solve the above-mentioned problem by gluing a pipe support attachment to a pipe support band or by connecting a pipe support attachment to a pipe support band, but the former solution requires the procurement of a pipe support band and then a new process of adhering the pipe support band, and the latter solution requires the separate procurement of a pipe support band that has been processed, for example, by drilling holes, which creates a new problem of increased procurement costs for the pipe support band. [Means for solving the problem]

[0014] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a pipe support attachment that can be used with pipe support bands that have been widely available in the past, and that can prevent slippage or falling off of the pipe or pipe support band without increasing the overall width.

[0015] In order to achieve the above object, as set forth in claim 1, the pipe support attachment of the present invention is a pipe support attachment to be used in combination with pipe support bands such as suspension bands and standing bands that support pipes by connecting to a building skeleton such as a slab, ceiling, or wall, and is comprised of two load transfer blocks each of which is partially cylindrical and abuts at a pair of opposing end faces so that they can be placed adjacent to each other in a state of embracing the pipe, and the two load transfer blocks are configured so that a pipe-side abutment surface that abuts the outer surface of the pipe is formed on the inner peripheral side of each load transfer block, and a support-side abutment surface that abuts against the pipe support band is formed on the outer peripheral side of each load transfer block, thereby allowing load to be transmitted between the pipe and the pipe support bands via the two load transfer blocks. a first protrusion tapered along the material axis direction of the pipe is formed on one of the pair of opposing end faces, and a first groove into which the first protrusion fits is formed on the other of the pair of opposing end faces, thereby enabling a first relative movement of the first protrusion in its tapering direction relative to the first groove to be restrained; and a second protrusion tapered along the material axis direction of the pipe is formed on one of the end faces constituting the other of the pair of opposing end faces, and a second groove into which the second protrusion fits is formed on the other of the pair of opposing end faces, thereby enabling a second relative movement of the second protrusion in its tapering direction relative to the second groove to be restrained; The second ridge is formed so that the second relative movement is in the opposite direction to the first relative movement.

[0016] In addition, in the pipe support attachment according to the present invention, the second ridges are formed on the same side of the block as the first ridges and tapered in the opposite direction to the first ridges.

[0017] In addition, in the pipe support attachment according to the present invention, the second protrusions are formed on a different side of the block from the first protrusions and have the same tapering direction as the first protrusions.

[0018] In addition, the pipe support attachment of the present invention is configured so that the two load transmission blocks have gaps extending along the material axis direction of the pipe that are discretely arranged along the circumferential direction of the pipe.

[0019] In the pipe support attachment according to the present invention, the spaces are formed so that their cross-sectional shapes are hexagonal, and the spaces are arranged adjacent to each other with hexagonal partition walls in between.

[0020] In addition, the pipe support attachment of the present invention is provided with a plurality of protrusions on the two load transmission blocks, which are arranged discretely circumferentially and extend toward the material axis of the pipe, and each tip surface is formed so as to abut against the outer peripheral surface of the pipe as the pipe side abutment surface.

[0021] Moreover, the pipe support attachment according to the present invention is configured such that the two load transmission blocks are hingedly joined to each other at a position near one of the pair of opposing end faces.

[0022] In the pipe support attachment of the present invention, when the first protrusion is engaged with the first groove on one of the pair of opposing end faces, even if the first protrusion attempts to move in its tapering direction, it is engaged with the first groove and cannot move, and the relative movement of the first protrusion in the tapering direction with respect to the first groove (first relative movement) is restricted.

[0023] Similarly, when the second protrusion is engaged with the second groove on the other of the pair of opposing end faces, even if the second protrusion attempts to move in its tapering direction, it is engaged with the second groove and cannot move, and the relative movement of the second protrusion in the tapering direction with respect to the second groove (second relative movement) is restricted.

[0024] Here, the second protrusion is configured so that the second relative movement is in the opposite direction to the first relative movement, so the relative movement constraint action at each opposing end face is in a different direction. That is, when two load transmission blocks are arranged adjacent to each other, if the load transmission block on the left front side tries to shift forward, for example, the upper opposing end face of the upper and lower opposing end faces will exert the above-mentioned relative movement constraint action, restricting the above-mentioned movement of the load transmission block. If the load transmission block tries to shift backward, a similar relative movement constraint action will be exerted by the lower opposing end face, also restricting the above-mentioned movement of the load transmission block.

[0025] Therefore, when a load is applied along the axial direction of the piping material, the two load transmission blocks are restricted in their relative movement regardless of the direction of the load, and always behave as a single unit.Not only do their opposing end faces abut against each other over the entire area of ​​each end face, but their support side abutment faces abut against the piping support band over their entire area.

[0026] Therefore, the load transmission between the pipe and the pipe support band via the pipe support attachment of the present invention is carried out with distributed stress, and therefore small stress, not only for normal stress but also for shear stress (frictional stress).Thus, even in situations where vibration loads act from the pipe, there is a significant reduction in the risk of the pipe support attachment shifting in the axial direction of the pipe or falling out from between the pipe and the pipe support band.

[0027] The second relative movement of the second protrusion is configured to be opposite in direction to the first relative movement, and at least (a) A configuration in which the second ridge is formed on the same block side as the first ridge and tapers in the opposite direction to the first ridge. (b) A configuration in which the second protrusions are formed on a different block side from the first protrusions and have the same tapered direction as the first protrusions. The two are encompassed.

[0028] The two load transfer blocks need only be partially cylindrical, and do not necessarily need to be configured so that their cross-sectional shapes are approximately symmetrical, but a typical example is one in which each is semi-cylindrical.

[0029] The two load transmission blocks may be made of any material as long as they are configured to act as a load transmission means between the piping and the piping support band and transmit the load between them, but it is desirable to use a resin material with excellent deformability, especially a thermoplastic elastomer, as the material for the blocks.

[0030] [Structure that improves the thermal insulation of the load transfer block] The two load transmission blocks can be configured so that gaps extending along the axial direction of the pipe are discretely arranged along the circumferential direction of the pipe.

[0031] In this way, by appropriately setting the material from which the load transfer block is made and the discrete arrangement of the voids, it is possible to create an insulating space of sufficient volume within the load transfer block while maintaining the load transfer function, thereby providing insulating performance equal to or better than that of conventional insulating materials using rigid polyurethane foam, in a more economical manner.

[0032] The voids formed in the load transfer block can be configured as holes with a circular cross section (circular holes), such as those formed in lotus roots, but the cross-sectional shape can be any as long as the required insulation performance is obtained.

[0033] Here, if the load transmission block is configured so that both ends of each gap are open, it becomes easier to manufacture using a mold during injection molding. However, if the load transmission block is configured so that both ends of each gap are closed instead, air movement in and out of the gaps is prevented, thereby further improving the insulation performance.

[0034] In either case, the gap is formed so as to extend at least to the vicinity of both ends of the load transmission block so that the heat insulating performance of the load transmission block is substantially ensured.

[0035] The specific configuration for closing both ends of each gap is arbitrary, but for example, it is possible to configure it by attaching a closing plate having a planar shape similar to the end face of the load transmission block to each end face of the load transmission block.

[0036] Furthermore, if each void is formed so that its cross-sectional shape is hexagonal and they are arranged close to each other via hexagonal partitions, the load transfer block will be constructed with a honeycomb structure, which makes it possible to form voids with a cross-sectional area that is almost maximum while ensuring sufficient load transfer function, thereby significantly improving insulation performance.

[0037] This makes it possible to reduce the thickness of the insulation structure compared to conventional methods, improving workability in narrow spaces, and since the insulation material wrapped around the pipes can be placed on top of the pipe support band, there is no risk of condensation forming in the gaps even if gaps occur between the insulation material around the pipes and the pipe support attachment.

[0038] [Structure that improves the vibration damping properties of the load transmission block] The two load transmission blocks can be configured with a plurality of protrusions that are arranged discretely around the circumferential direction and extend toward the material axis of the pipe, with each end face formed to abut against the outer peripheral surface of the pipe as a pipe-side abutment surface.

[0039] In this way, the plurality of protrusions deform so as to follow the vibration load, and in addition to the above-mentioned function, a new vibration-damping function is exhibited.

[0040] The vibration-damping function of the load transmission block referred to here is a vibration-damping function achieved by adjusting the rigidity of the protrusions so that the piping support band and pressure pulsation do not resonate, and is different from the vibration-damping function achieved by vibration absorption, which will be described later.

[0041] Furthermore, with conventional pipe support bands that attach vibration-damping rubber to a U-band, the vibration-damping rubber is formed in a straight shape and then bent and set in that state on the U-band, so the vibration-damping rubber needs to be formed with a softness appropriate for such an attachment operation, and there are significant restrictions on adjusting the rigidity. However, with the pipe support attachment of the present invention, the attachment is manufactured from the beginning in the shape it will be in when attached to the pipe, so the above-mentioned problems do not occur, and specifications such as the type of material that forms the load transmission block, the cross-sectional area of ​​the protrusions, and the length of the protrusions can be freely determined without any restrictions, and the rigidity of the load transmission block can be set to the desired level.

[0042] Furthermore, with the piping support attachment of the present invention, the vibration characteristics when attached to the piping support band can be clearly determined by vibration experiments, etc., and by reflecting this in the natural frequency analysis of the piping system, more accurate analysis results can be obtained.

[0043] Here, if at least the projections of the load transmission block are formed from a thermoplastic elastomer having a vibration absorbing function, it is possible to enhance the vibration absorbing function of the load transmission block.

[0044] Incidentally, in the case of standard or general-purpose thermoplastic elastomers, although their vibration absorption function may not be sufficient, they can still function as elastic springs, and their vibration characteristics can be clearly understood with little variation through vibration experiments, etc. Therefore, even if their vibration absorption function is not sufficient, by appropriately setting the rigidity of the thermoplastic elastomer, it is possible to change the natural frequency of the entire piping system, including the piping support band, so that it does not match the frequency of the pressure pulsation. In that sense, the vibration-damping function is still exerted, and if they are formed from a thermoplastic elastomer with vibration-absorbing function, it is possible to improve the vibration-absorbing function in addition to the vibration-damping function achieved by such rigidity adjustment.

[0045] [Regarding adjacent placement of two load transfer blocks] To secure a pipe to a building structure using the pipe support attachment of the present invention, first, two load transfer blocks are placed adjacent to each other along the circumferential direction of the pipe so that the pipe is surrounded, then the pipe support band is placed so that it is wrapped around the load transfer blocks, and then the pipe support band is secured to the building structure, such as the ceiling, upper floor floor slab, or wall, via an appropriate connector.

[0046] Here, measures can be taken to prevent the load transmission blocks from falling off the pipe until the pipe support band is wrapped around them, such as temporarily fixing the load transmission blocks to each other with double-sided tape, but if the two load transmission blocks are configured so that they are hinged to each other near one of a pair of opposing end faces, and the blocks are hugged to the pipe with the joint point facing up, for example, it is possible to reliably prevent them from falling off the pipe without using double-sided tape, etc. [Brief explanation of the drawings]

[0047] [Figure 1] 1 is a layout diagram showing a pipe support attachment 1 according to this embodiment together with pipes 4 and a suspension band 2 which is a pipe support band. [Figure 2] 1 is an overall perspective view of a pipe support attachment 1 according to an embodiment of the present invention; [Figure 3] 1A and 1B are diagrams of a pipe support attachment 1 according to this embodiment, in which (a) is a front view, (b) is a cross-sectional view along line AA, (c) is a front view showing only the load transmission block 11a of the load transmission blocks 11a and 11b that make up the pipe support attachment 1, and (d) is an arrow view seen from line BB. [Figure 4] 3A to 3C are explanatory views showing the operation of the piping support attachment 1 according to the present embodiment. [Figure 5] 10A and 10B are explanatory diagrams showing the operation of the pipe support attachment according to the modified example. [Figure 6] FIG. 10 is an overall perspective view of a pipe support attachment according to another modified example. [Figure 7] FIG. 10 is an overall perspective view of a pipe support attachment according to yet another modified example. [Figure 8] FIG. 10 is a front view of a pipe support attachment according to yet another modified example. DETAILED DESCRIPTION OF THE INVENTION

[0048] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a pipe support attachment according to the present invention will be described with reference to the accompanying drawings.

[0049] Fig. 1 is a layout diagram showing a piping support attachment 1 according to this embodiment together with a suspending band 2 serving as a piping support band for suspending a piping 4 to be placed as a horizontal pipe below a ceiling or an upper floor slab, and Fig. 2 is an overall perspective view of the piping support attachment 1. Also, Figs. 3(a) to 3(d) are a front view of the piping support attachment 1, a cross-sectional view along line AA, a front view of only the load transmission block 11a, and a view seen from line BB, respectively.

[0050] The suspension band 2 is constructed using a strip-shaped steel material and consists of a pipe insertion portion 3 curved outward in a circular direction and a pair of opposing connecting portions 6, 6 extending radially from the opposing ends of the pipe insertion portion.The pair of connecting portions are connected to the ceiling surface or the underside of the upper floor floor slab via connecting devices (not shown) such as suspension bolts, using bolt insertion holes (not shown) formed in them, so that the pipe 4 is suspended via the pipe support attachment 1.

[0051] There are various types of suspension bands 2 known depending on the opening and closing method, such as those in which the pipe insertion portion 3 opens and closes by its own elastic deformation, those that open and close by a pin joint, and those that open and close by a plastic hinge.In addition, with regard to hinges using pin joints, both outwardly protruding types and inwardly protruding types are also known, and an appropriate type can be selected from these.

[0052] The piping support attachment 1 is used in conjunction with such a suspension band 2, and as shown in Figures 1 to 3, is composed of two load transmission blocks 11a and 11b, each made of a thermoplastic elastomer with excellent deformability.

[0053] Load transfer blocks 11a, 11b are each semi-cylindrical, with end face 12a of load transfer block 11a abutting end face 12b of the opposing load transfer block 11b at their upper positions, and end face 13a of load transfer block 11a abutting end face 13b of the opposing load transfer block 11b at their lower positions, allowing them to be positioned adjacent to each other and hugging the piping 4. They are configured so that they form piping side abutment surfaces 14a, 14b that abut the outer surface of the piping 4 on their inner sides, and support side abutment surfaces 15a, 15b that abut the hanging band 2 on their outer sides, allowing load to be transmitted between the piping 4 and the hanging band 2 via the two load transfer blocks.

[0054] In addition, a protrusion 21a serving as a first protrusion tapering along the material axis direction of the pipe 4 is formed on the end face 12a of the load transmission block 11a, and a groove 21b serving as a first groove into which the protrusion fits is formed on the end face 12b of the load transmission block 11b.With this configuration, the load transmission blocks 11a and 11b are configured so that the relative movement (first relative movement) of the protrusion 21a in the tapering direction relative to the groove 21b at their upper positions is restricted.

[0055] On the other hand, a protrusion 22a serving as a second protrusion tapering along the material axis direction of the pipe 4 is formed on the end face 13a of the load transmission block 11a, and a groove 22b serving as a second groove into which the protrusion fits is formed on the end face 13b of the load transmission block 11b.With this configuration, the load transmission blocks 11a and 11b are configured so that the relative movement (second relative movement) of the protrusion 22a in the tapering direction relative to the groove 22b at their lower positions is restricted.

[0056] Here, the ridges 22a are formed so that the tapering direction thereof is opposite to the tapering direction of the ridges 21a, and with this configuration, the second relative movement is in the opposite direction to the first relative movement.

[0057] The load transmission blocks 11a and 11b are configured so that they extend to both ends along the material axis of the pipe 4 and have open voids 31a and 31b that are discretely arranged along the circumferential and radial directions of the pipe 4 so that they function as parts that perform insulation in addition to the load transmission function described above.

[0058] The gaps 31a and 31b are formed so that their cross-sectional shapes are hexagonal, and are disposed adjacent to each other with hexagonal partition walls 32a and 32b interposed therebetween.

[0059] To suspend a pipe 4 using the pipe support attachment 1 of this embodiment, first, the load transfer blocks 11a, 11b are arranged adjacent to each other and surrounding the pipe 4 so that their inner surfaces 14a, 14b abut against the outer surface of the pipe 4, and so that the protrusion 21a is fitted into the groove 21b and the protrusion 22a is fitted into the groove 22b, and so that the end faces 12a, 13a of the load transfer block 11a abut against the end faces 12b, 13b of the load transfer block 11b, respectively.

[0060] The load transmission blocks 11a and 11b are temporarily fixed to each other or to the pipe 4, for example with double-sided tape, so that they are temporarily kept surrounding the pipe 4 as needed until the suspension bands 2 are attached to the outside of them.

[0061] Next, the pipe insertion portion 3 of the hanging band 2 is expanded in the direction in which the connecting portions 6, 6 of the hanging band 2 move away from each other, and then the hanging band 2 is positioned so that the pipe support attachment 1 is inserted inside the pipe insertion portion, and then the pipe insertion portion 3 is returned to its original diameter, thereby attaching the hanging band 2 to the outside of the pipe support attachment 1.

[0062] Next, the pipe 4 inserted into the inner space of the pipe insertion section 3 is suspended by connecting it to the ceiling surface or the underside of the upper floor floor slab via a connecting device (not shown) such as a hanging bolt, using the bolt insertion holes (not shown) formed in the connecting sections 6, 6.

[0063] In the pipe support attachment 1 of this embodiment, as shown in Figure 4(a), when the load transmission block 11a attempts to shift toward the back of the load transmission block 11b along the material axis direction of the pipe 4 (black arrow in the figure), if the protrusion 21a is engaged with the groove 21b, even if the protrusion 21a attempts to move in its tapering direction, it is engaged with the groove 21b and cannot move, so the relative movement of the protrusion 21a in the tapering direction relative to the groove 21b (first relative movement) is restricted.

[0064] Conversely, when the load transmission block 11a attempts to shift forward relative to the load transmission block 11b as shown in Figure 4(b) (white arrow in the figure), if the protrusion 22a is fitted into the groove 22b, the protrusion 22a cannot move in its tapering direction because it is engaged with the groove 22b, and therefore the relative movement of the protrusion 22a in the tapering direction relative to the groove 22b (second relative movement) is restricted.

[0065] That is, the load transmission blocks 11a and 11b are restricted in their relative movement in response to a load acting along the axial direction of the piping material and in response to a load acting in either direction.

[0066] When the load transmission block 11a tries to shift backward in the figure relative to the load transmission block 11b along the material axis direction of the pipe 4 (FIG. 1(a)), the protrusions 22a move to pass through the grooves 22b on the lower opposing end faces 13a and 13b, and are not engaged with the grooves. When the load transmission block 11a tries to shift forward in the figure (FIG. 1(b)), the protrusions 21a move to pass through the grooves 21b on the upper opposing end faces 12a and 12b, and are not engaged with the grooves. However, as described above, when the load transmission block 11a attempts to shift backward, the relative movement of the protrusion 21a in the tapering direction relative to the groove 21b (first relative movement) is restricted, and when the load transmission block 11a attempts to shift forward, the relative movement of the protrusion 22a in the tapering direction relative to the groove 22b (second relative movement) is restricted, so that the relative movement of the load transmission blocks 11a, 11b as a whole is restricted in either direction.

[0067] As described above, in the pipe support attachment 1 according to this embodiment, the end face 12a of the load transmission block 11a has a tapered ridge 21a that tapers along the material axis direction of the pipe 4, and the end face 12b of the load transmission block 11b has a groove 21b into which the ridge is fitted. The end face 13a of the load transmission block 11a has a tapered ridge 22a that tapers along the material axis direction of the pipe 4, and the end face 13b of the load transmission block 11b has a groove 22b into which the ridge is fitted. The protrusions 22a are formed such that their tapering direction is opposite to that of the protrusions 21a, and the second relative movement is configured to be opposite to the first relative movement. Therefore, in the load transmission blocks 11a, 11b, the relative movement of the protrusions 21a in the tapering direction relative to the grooves 21b (first relative movement) is restricted at their upper positions, and the relative movement of the protrusions 22a in the tapering direction relative to the grooves 22b (second relative movement) is restricted at their lower positions.

[0068] Therefore, when a load is applied along the axial direction of the piping material, the load transmission blocks 11a and 11b are restricted in their relative movement in response to loads in either direction, and always behave as a single unit. Not only do their opposing end faces abut against each other over the entire area of ​​each end face, but the support side abutment surfaces 15a and 15b also abut against the suspension band 2 over their entire area.

[0069] Therefore, the load transmission between the pipe 4 and the hanging band 2 via the pipe support attachment 1 is carried out with distributed stress, and therefore small stress, not only for normal stress (stress in a direction perpendicular to the axial direction of the pipe material) but also for shear stress (frictional stress).Thus, even in a situation where a vibration load acts from the pipe 4, there is a significant reduction in concerns that the pipe support attachment 1 will shift in the axial direction of the pipe material or fall out from between the pipe 4 and the hanging band 2.

[0070] In this embodiment, the second ridge 22a is formed on the same block side as the first ridge 21a and tapered in the opposite direction. However, instead of this configuration, the second ridge may be formed on a different block side from the first ridge and tapered in the same direction as the first ridge, so that the second relative movement is in the opposite direction to the first relative movement.

[0071] That is, as shown in FIG. 5, the pipe support attachment according to the above-described modified example is composed of two semi-cylindrical load transmission blocks 51a, 51b, and at their upper positions, the end face 12a of the load transmission block 51a abuts against the end face 12b of the opposing load transmission block 51b, and at their lower positions, the end face 53a of the load transmission block 51a abuts against the end face 53b of the opposing load transmission block 51b, so that they can be placed adjacent to each other and hug the pipe 4.

[0072] Here, the upper positions of the load transmission blocks 51a, 51b have the same fitting configuration as in the above-described embodiment, but at the lower positions, a second protrusion 54b tapering along the material axis direction of the pipe 4 is formed on the end face 53b of the load transmission block 51b, and a second groove 54a into which the protrusion fits is formed on the end face 53a of the load transmission block 51a, and the protrusion 54b is formed so that its tapering direction is in the same direction as the tapering direction of the protrusion 21a.

[0073] With this configuration, as in the above-described embodiment, the load transmission blocks 51a, 51b are constrained in their upper positions to the relative movement (first relative movement) of the protrusion 21a in the tapering direction relative to the groove 21b, and in their lower positions to the relative movement (second relative movement) of the protrusion 54b in the tapering direction relative to the groove 54a. Therefore, in response to loads along the axial direction of the piping material, the load transmission blocks 51a, 51b are restricted in their relative movement in either direction, and always behave as a single unit.

[0074] Therefore, this modified example also achieves the same effects as the above-described embodiment, but the same components as those in the embodiment are given the same reference numerals and descriptions thereof will be omitted.

[0075] Furthermore, in this embodiment, in order to enhance the insulating function, voids 31a, 31b extending along the material axis direction of the pipe 4 to both ends and open at both ends are configured to be discretely arranged along the circumferential and radial directions of the pipe, and the voids are arranged close to each other via hexagonal partitions 32a, 32b so that their cross-sectional shapes are hexagonal. However, the addition of such insulating function to the pipe support attachment of the present invention is optional, and it is also possible to use a configuration that omits the above-mentioned honeycomb structure, as shown in Figure 6.

[0076] The piping support attachment of this modified example has a configuration that is generally similar to that of the above-described embodiment, except for the configuration in which gaps 31a, 31b are arranged close to each other via hexagonal partitions 32a, 32b so that their cross-sectional shapes are hexagonal, and it achieves substantially the same effects, so the same symbols are used and their descriptions are omitted.

[0077] On the other hand, the pipe support attachment according to the present invention can be configured to omit the heat insulating function described above while enhancing the vibration isolation function as shown in FIG.

[0078] That is, the piping support attachment of Figure 7 is composed of two semi-cylindrical load transmission blocks 71a, 71b, and at their upper positions, the end face 12a of the load transmission block 71a abuts against the end face 12b of the opposing load transmission block 71b, and at their lower positions, the end face 13a of the load transmission block 71a abuts against the end face 13b of the opposing load transmission block 71b, so that they can be placed adjacent to each other and hug the piping 4.

[0079] Furthermore, the upper and lower positions of the load transmission blocks 71a, 71b have the same fitting configuration as in the above-mentioned embodiment, and the same symbols as in the embodiment are used, and explanations of their configuration and effects will be omitted.However, the load transmission blocks 71a, 71b each have a plurality of protrusions 143a, 143b that are discretely arranged circumferentially and extend toward the material axis of the pipe when the pipe 4 is sandwiched between them, and each tip surface 142a, 142b is formed so as to abut against the outer peripheral surface of the pipe 4 as a pipe-side abutment surface.

[0080] The load transmission blocks 71a and 71b are each formed from a thermoplastic elastomer with excellent deformability so that they have the rigidity and strength to transmit load between the piping 4 and the suspension band 2, but it is particularly desirable to form the protrusions 143a and 143b from a thermoplastic elastomer with vibration absorption capabilities.

[0081] The piping support attachment of this modified example has a configuration that is generally the same as that of the above-described embodiment, except for the fact that the vibration-proofing properties are improved by providing protrusions 143a and 143b, and achieves substantially the same effects, so the same symbols are used and their explanations are omitted.

[0082] Although not specifically mentioned in this embodiment, the load transmission blocks 11a and 11b may be joined to each other via a hinge 81 near the opposing end faces 12a and 12b as shown in FIG.

[0083] With this configuration, it is possible to reliably prevent the load transmission blocks 11a and 11b from falling off the piping 4 until the suspension band 2 is wrapped around them, without having to temporarily fix the load transmission blocks 11a and 11b to each other with double-sided tape or the like. [Explanation of symbols]

[0084] 1 Pipe support attachment 2 Hanging band (pipe support band) 3 Pipe insertion section 4 Piping 6 Connecting part 11a, 11b Load transfer block 14a, 14b Piping side contact surface 15a,15b Support side contact surface 12a, 12b End surface (one of a pair of opposing end surfaces) 13a, 13b end surface (the other of a pair of opposing end surfaces) 21a First ridge 21b First Groove 22a Second ridge 22b Second Groove 31a,31b void 32a,32b Hexagonal bulkhead 51a, 51b Load transmission block 53a, 53b end faces (the other of a pair of opposing end faces) 54b Second ridge 54a Second Groove 71a, 71b Load transfer block 142a, 142b Tip surface (contact surface on the piping side) 143a,143b protrusion

Claims

1. A pipe support attachment used in conjunction with a pipe support band such as a suspension band or a standing band that supports a pipe by connecting to a building structure such as a slab, ceiling, or wall, the pipe support attachment comprising two load transfer blocks each having a semi-cylindrical shape and abutting at a pair of opposing end faces so that the two load transfer blocks can be placed adjacent to each other and embrace the pipe, the two load transfer blocks being configured so that a pipe-side abutment surface that abuts against the outer surface of the pipe is formed on the inner periphery of each block, and a support-side abutment surface that abuts against the pipe support band is formed on the outer periphery of each block, thereby allowing load to be transmitted between the pipe and the pipe support band via the two load transfer blocks. a first protrusion tapered along the material axis direction of the pipe is formed on one of the pair of opposing end faces, and a first groove into which the first protrusion fits is formed on the other of the pair of opposing end faces, thereby enabling a first relative movement of the first protrusion in its tapering direction relative to the first groove to be restrained; and a second protrusion tapered along the material axis direction of the pipe is formed on one of the end faces constituting the other of the pair of opposing end faces, and a second groove into which the second protrusion fits is formed on the other of the pair of opposing end faces, thereby enabling a second relative movement of the second protrusion in its tapering direction relative to the second groove to be restrained; A pipe support attachment, characterized in that the second ridge is configured so that the second relative movement is in an opposite direction to the first relative movement.

2. 2. A pipe support attachment according to claim 1, wherein said second ridges are formed on the same side of the block as said first ridges and tapered in an opposite direction to said first ridges.

3. 2. A pipe support attachment according to claim 1, wherein the second ridge is formed on a different side of the block from the first ridge and has the same tapered direction as the first ridge.

4. A pipe support attachment as described in any one of claims 1 to 3, wherein the two load transfer blocks are configured so that gaps extending along the axial direction of the pipe are discretely arranged along the circumferential direction of the pipe.

5. 5. A pipe support attachment according to claim 4, wherein each of said gaps is formed to have a hexagonal cross section, and said gaps are arranged adjacent to one another with hexagonal partition walls interposed therebetween.

6. A pipe support attachment as described in any one of claims 1 to 3, wherein the two load transmission blocks are provided with a plurality of protrusions that are arranged discretely in the circumferential direction and extend toward the material axis of the pipe, and each tip surface is formed so as to abut against the outer peripheral surface of the pipe as the pipe side abutment surface.

7. 4. A pipe support attachment according to claim 1, wherein the two load transmission blocks are hingedly joined to each other at a position near one of the pair of opposing end faces.

8. 5. A pipe support attachment according to claim 4, wherein the two load transmission blocks are hingedly joined to each other at a position near one of the pair of opposing end faces.

9. 6. A pipe support attachment according to claim 5, wherein the two load transmission blocks are hingedly joined to each other at a position near one of the pair of opposing end faces.

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