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 used in combination with a pipe support band when supporting various pipes with a pipe support band such as a suspension band or a standing band.

Background Art

[0002] In air conditioning facility construction and sanitary facility construction, various pipes are used according to the use and purpose. When installing these pipes in a building, for horizontal pipes, they are suspended from the ceiling or the upper floor slab with suspension bands, and for rising pipes, they are fixed to the wall with standing bands.

[0003] Pipe support bands such as suspension bands and standing bands are composed of a pipe insertion part configured so that a pipe can be inserted inside by bending a strip-shaped steel material into an annular shape in the out-of-plane direction, and a pair of connecting parts respectively extending in the radial direction so as to face each other from each end of the pipe insertion part. To support a pipe using these pipe support bands, the lower end of a connector fixed to the ceiling surface or the lower surface of the upper floor slab or the tip of a connector fixed to the wall surface is sandwiched between the pair of connecting parts described above, and after inserting the pipe into the pipe insertion part, bolts are inserted through the pair of connecting parts and tightened, so that the pipe is suspended from the ceiling or the upper floor slab or fixed to the wall.

[0004] Here, the weight of the pipe constantly acts as a vertical load on the pipe insertion part composed of a strip-shaped steel material, or the inertial force during an earthquake acts as a horizontal load, while the reaction forces act on the peripheral surface of the pipe. However, in order to suppress the manufacturing cost, the width of the steel material has to be 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, and as a result, if the strength of the pipe has been reduced due to corrosion, etc., the pipe may break. In addition, since the pipe insertion part is formed 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 the unevenness appears as ridges on the outer periphery and as grooves on the inner periphery, which further reduces the surface on which the load acts, and causes the above-mentioned problem of stress concentration becoming more pronounced.

[0006] Incidentally, when the piping is a metal pipe, in order to prevent electrolytic corrosion, steel material coated with an electrical insulating material is used as the piping insertion part. However, conventionally, the coating of the electrical insulating material has been mainly performed by dipping, so that the above-mentioned stiffening rib is merely coated with the electrical insulating material along its unevenness, and the above-mentioned groove remains visible on the inner circumference, and the problem of the reduction in the load acting surface due to the groove is not solved at all.

[0007] In order to solve this problem, the applicant has developed a pipe support that includes a pipe insertion portion made of a strip-shaped steel material and a load transmission means made of a resin material that is placed between the pipe and the pipe so that load can be transmitted between the two, 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. Thus, the shear stress generated in the pipe is reduced, and stress concentration on the pipe and, ultimately, the resulting breakage are prevented.

[0009] In addition, in the above-mentioned pipe support device, it is desirable to manufacture the portion of the strip-shaped steel material that makes up the pipe support band that corresponds to the pipe insertion portion by injection molding, using it as an insert. However, since this can be time-consuming and costly to manufacture due to the positioning of 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 exerts a load transfer function similar to that of the pipe support device described above, and can prevent stress concentration on the pipe. Furthermore, because it is used by fitting the pipe support band into a fitting groove formed in the load transfer block, movement of the pipe support attachment along the material axis direction of the pipe is restricted. Even in a situation where a vibration load acts 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 load transfer function described above is reliably maintained. Thus, it is possible to prevent stress concentration on the pipe in a more economical manner without having to manufacture it integral with the pipe support band. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] JP 2021-177082 A 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 a 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. However, the former solution requires the procurement of a pipe support band and then a new process of adhering to the pipe support band, while 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 high 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 use pipe support bands that have been widely distributed in the past, and that can prevent slippage or falling off of the pipes or pipe support bands 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 used in combination with pipe support bands such as suspension bands and standing bands which support pipes by connecting to a building structure such as a slab, ceiling or wall, and which is comprised of two load transfer blocks each of which is partially cylindrical and which can be arranged adjacent to each other in a state of embracing the pipe by abutting at a pair of opposing end faces, and the two load transfer blocks are configured so that a pipe side abutment surface which abuts against the outer circumferential surface of the pipe is formed on the inner periphery of each block, and a support side abutment surface which abuts against the pipe support band is formed on the outer periphery of each block, thereby allowing load transfer 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 protrusion is formed so that the second relative movement is in a direction opposite to the first relative movement.

[0016] In the pipe support attachment according to the present invention, the second ridge is formed on the same side of the block as the first ridge and tapers in an opposite direction to the first ridge.

[0017] In addition, in the pipe support attachment according to the present invention, the second protrusion is formed on a different side of the block from the first protrusion and has the same tapered direction as the first protrusion.

[0018] In addition, the pipe support attachment of the present invention is configured so that the two load transfer blocks are arranged so that gaps extending along the material axis of the pipe are discretely positioned 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 they are disposed adjacent to one another with hexagonal partitions interposed therebetween.

[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 discretely arranged circumferentially extending toward the material axis of the pipe, and each end face 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 has the two load transmission blocks hinged 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 a 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 with respect to the second groove in the tapering direction (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 transfer blocks are arranged adjacent to each other, for example, if the load transfer block on the left front side tries to shift towards the front, the above-mentioned relative movement constraint action is exerted by, for example, the upper opposing end face of the upper and lower opposing end faces, restricting the above-mentioned movement of the load transfer block, and if it tries to shift towards the rear, a similar relative movement constraint action is exerted by the lower opposing end face, restricting the above-mentioned movement of the load transfer block as well.

[0025] Therefore, when a load is applied along the axial direction of the piping material, the two load transfer blocks are restricted in their relative movement for 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 their support side abutment faces abut against the piping support band over their entire area.

[0026] Therefore, the load transfer between the pipe and the pipe support band through the pipe support attachment of the present invention is carried out not only with respect to the normal stress but also with respect to the shear stress (frictional stress) as dispersed stress, that is, small stress. Thus, even in a situation where a vibration load acts on the pipe, concerns such as the pipe support attachment shifting in the axial direction of the pipe material axis or falling out between the pipe and the pipe support band are significantly reduced.

[0027] As a configuration for making the second ridge such that the second relative movement is in the opposite direction to the first relative movement, there are at least (a) A configuration in which the second ridge is formed on the same block side as the first ridge and the taper direction is opposite to that of the first ridge (b) A configuration in which the second ridge is formed on a block side different from the first ridge and the taper direction is the same as that of the first ridge These two are included.

[0028] It is sufficient that the two load transfer blocks each have a partial cylindrical shape, and it is not necessarily required to be configured such that the cross-sectional shape is substantially symmetric, but a configuration in which each is semi-cylindrical is a typical example.

[0029] As long as the two load transfer blocks are configured to be able to intervene as load transfer means between the pipe and the pipe support band to perform load transfer between the two, the specific forming material is arbitrary, but it is desirable to adopt a resin material rich in deformation performance, particularly a thermoplastic elastomer, as the forming material.

[0030] [Configuration for enhancing heat insulation of load transfer block] The two load transfer blocks can be configured such that voids extending along the axial direction of the pipe material 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 form an insulating space of sufficient volume within the load transfer block while maintaining the load transfer function, thereby providing insulating performance equal to or greater than that of conventional insulating materials using rigid polyurethane foam, in a more economical manner.

[0032] The gap formed in the load transfer block can be configured as a hole with a circular cross section (circular hole), such as those formed in a lotus root, but the cross-sectional shape can be arbitrary 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 is easy to manufacture using a mold during injection molding. However, if the load transmission block is instead configured so that both ends of each gap are closed, 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 transfer block to each end face of the load transfer block.

[0036] Furthermore, if each gap is formed so that its cross-sectional shape is hexagonal and they are arranged adjacent to each other via hexagonal partitions, the load transfer block will be constructed with a honeycomb structure, which makes it possible to form gaps with almost the maximum cross-sectional area while ensuring sufficient load transfer function, thereby significantly improving the 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 also allows the insulation material wrapped around the pipes to be layered on top of the pipe support band, so that even if a gap occurs between the insulation material around the pipes and the pipe support attachment, there is no risk of condensation forming in that gap.

[0038] [Structure that improves the vibration resistance of the load transmission block] The two load transfer blocks can be configured with a plurality of protrusions that are arranged discretely in the circumferential direction extending 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 thus a new vibration-proofing function is exerted in addition to the above-mentioned function.

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

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

[0042] Furthermore, in the piping support attachment of the present invention, the vibration characteristics of the attachment 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 made of a thermoplastic elastomer having a vibration absorbing function, it is possible to improve the vibration absorbing function of the load transmission block.

[0044] Incidentally, in the case of standard or general-purpose thermoplastic elastomers, although there are cases where the vibration absorption function is insufficient, they can still fully function as elastic springs, and their vibration characteristics can be clearly and with little variation grasped through vibration experiments, etc. Therefore, even if the vibration absorption function is insufficient, 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, there is no change in the fact that the vibration-damping function is exerted, and when formed from a thermoplastic elastomer with vibration-absorbing function, in addition to the vibration-damping function achieved by such rigidity adjustment, it is possible to improve the vibration absorption function.

[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 as to be wrapped around the load transfer blocks, and then the pipe support band is secured to the building structure, such as the ceiling, upper floor slab or wall, via suitable connectors.

[0046] Here, measures can be taken to prevent the load transfer blocks from falling off the pipe until the pipe support band is wrapped around them, such as temporarily fixing the load transfer blocks to each other with double-sided tape, etc. However, if the two load transfer blocks are configured so that they are hinged to each other near one of a pair of opposing end faces, and the load transfer blocks are hugged to the pipe with the joint position at the top, it is possible to reliably prevent them from falling off the pipe without using double-sided tape, etc. [Brief description 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 hanging band 2 which is a pipe support band. [Diagram 2] 1 is an overall perspective view of a pipe support attachment 1 according to an embodiment of the present invention; [Diagram 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 transfer block 11a of the load transfer blocks 11a and 11b that constitute the pipe support attachment 1, and (d) is an arrow view seen from line BB. [Figure 4] 3A to 3C are explanatory diagrams showing the operation of the pipe support attachment 1 according to the present embodiment. [Diagram 5] 13A to 13C are explanatory diagrams showing the operation of the pipe support attachment according to the modified example. [Figure 6] FIG. 13 is an overall perspective view of a pipe support attachment according to another modified example. [Figure 7] FIG. 13 is an overall perspective view of a pipe support attachment according to still another modified example. [Figure 8] FIG. 11 is a front view of a pipe support attachment according to still another modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[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 arranged 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 (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 transfer block 11a, and a view seen from line BB, respectively.

[0050] The suspension band 2 is constructed using a strip-shaped steel material and comprises a pipe insertion portion 3 curved outwardly and into a ring shape, 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 such as suspension bolts (not shown) by utilizing bolt insertion holes (not shown) formed in them, thereby suspending the pipe 4 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 that open and close by elastic deformation of the piping insertion portion 3 itself, those that open and close by a pin joint, and those that open and close by a plastic hinge.In addition, with regard to the 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 pipe support attachment 1 is used in conjunction with such a hanging band 2, and is composed of two load transmission blocks 11a, 11b as shown in Figures 1 to 3, each of which is formed from a thermoplastic elastomer with excellent deformability.

[0053] The load transfer blocks 11a, 11b are each semi-cylindrical in shape, and at their upper position, end face 12a of load transfer block 11a abuts against end face 12b of the opposing load transfer block 11b, and at their lower position, end face 13a of load transfer block 11a abuts against end face 13b of the opposing load transfer block 11b, thereby allowing them to be positioned adjacent to each other in an embraced manner on the piping 4. The load transfer blocks are configured so that they form piping side abutment surfaces 14a, 14b that abut against the outer peripheral surface of the piping 4 on their inner sides, and support side abutment surfaces 15a, 15b that abut against the hanging band 2 on their outer peripheral sides, respectively, so that load is 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 tapered along the material axial direction of the pipe 4 is formed on an end face 12a of the load transfer block 11a, and a groove 21b serving as a first groove into which the protrusion fits is formed on an end face 12b of the load transfer block 11b. With this configuration, the load transfer blocks 11a, 11b are configured so that the relative movement in the tapering direction of the protrusion 21a with respect to the groove 21b at their upper positions (first relative movement) is restricted.

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

[0056] Here, the ridges 22a are formed so that the taper direction thereof is opposite to the taper 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 transfer blocks 11a, 11b are configured so that they extend to both ends along the material axis of the pipe 4 and have open gaps 31a, 31b that are discretely arranged along the circumferential and radial directions of the pipe, so that they function as parts that perform insulation functions in addition to the load transfer function described above.

[0058] The spaces 31a, 31b are formed so that their cross-sectional shapes are hexagonal, and are disposed adjacent to each other via hexagonal partitions 32a, 32b.

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

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

[0061] Next, the piping 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 as to insert the piping support attachment 1 inside the piping insertion portion.The piping insertion portion 3 is then returned to its original diameter, thereby attaching the hanging band 2 to the outside of the piping support attachment 1.

[0062] Next, the piping 4 inserted into the inner space of the piping insertion portion 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 while utilizing the bolt insertion holes (not shown) formed in the connecting portions 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 in the figure along the material axis direction of the pipe 4 relative to the load transmission block 11b (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 toward the front relative to the load transmission block 11b as shown in Figure 4(b) (white arrow in the figure), if the protrusion 22a is engaged with the groove 22b, the protrusion 22a cannot move in its tapering direction even if it attempts to do so 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, 11b are restricted in their relative movement with respect to a load acting along the axial direction of the piping material and in any 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 protrusion 22a moves to pass through the groove 22b at the lower opposing end faces 13a, 13b, so it is not engaged with the groove. When the load transmission block 11a tries to shift forward in the figure (FIG. 1(b)), the protrusion 21a moves to pass through the groove 21b at the upper opposing end faces 12a, 12b, so it is not engaged with the groove. 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 constrained, 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 constrained, 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 transfer block 11a has a tapered protrusion 21a that tapers along the material axis direction of the pipe 4, and the end face 12b of the load transfer block 11b has a groove 21b into which the protrusion fits. Also, the end face 13a of the load transfer block 11a has a tapered protrusion 22a that tapers along the material axis direction of the pipe 4, and the end face 13b of the load transfer block 11b has a groove 22b into which the protrusion fits. By forming the protrusions 22a so that their tapering direction is opposite to that of the protrusions 21a, the second relative movement is 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, 11b are restricted in their relative movement for loads in either direction, and always behave as a single unit, and 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, 15b abut against the hanging 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, the concern 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 is greatly reduced.

[0070] In this embodiment, the second protrusion 22a is formed on the same block side as the first protrusion 21a and has an opposite taper direction. However, instead of this configuration, a configuration in which the second relative movement is in the opposite direction to the first relative movement may be used in which the second protrusion is formed on a different block side from the first protrusion and has the same taper direction as the first protrusion.

[0071] That is, as shown in Figure 5, the piping support attachment of the above-mentioned modified example is composed of two load transfer blocks 51a, 51b, each of which is semi-cylindrical. At an upper position, end face 12a of the load transfer block 51a abuts against end face 12b of the opposing load transfer block 51b, and at a lower position, end face 53a of the load transfer block 51a abuts against end face 53b of the opposing load transfer block 51b, so that the attachments can be positioned adjacent to each other and hug the piping 4.

[0072] Here, in the upper position of the load transmission blocks 51a, 51b, the fitting configuration is the same as in the above-described embodiment, but in the lower position, a second protrusion 54b tapered along the material axial direction of the pipe 4 is formed on the end face 53b of the load transmission block 51b, and a groove 54a as a second groove into which the protrusion 54b 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 position in the relative movement (first relative movement) of the protrusion 21a in the tapered direction relative to the groove 21b, and in their lower position in the relative movement (second relative movement) of the protrusion 54b in the tapered direction relative to the groove 54a. Therefore, with respect to a load along the axial direction of the piping material, the relative movement of the load transmission blocks 51a, 51b is restricted in either direction, and the load transmission blocks always behave as a single unit.

[0074] Therefore, also in this modified example, the same operational effects as those of the above-described embodiment are achieved, and the same reference numerals are given to the same configurations as those of the embodiment, and the description thereof is omitted.

[0075] Further, in the present embodiment, in order to enhance the heat insulation function, it is configured such that voids 31a and 31b extending to both ends along the axial direction of the pipe shaft of the pipe 4 and opened at both ends are discretely arranged along the circumferential direction and the radial direction of the pipe, and the voids are arranged in proximity to each other via hexagonal partition walls 32a and 32b so that their cross-sectional shapes are hexagonal. However, for the pipe support attachment according to the present invention, the addition of such a heat insulation function is optional, and as shown in FIG. 6, a configuration in which the above-described honeycomb structure is omitted may be adopted.

[0076] Note that the pipe support attachment according to this modified example has substantially the same configuration as the above-described embodiment except that the voids 31a and 31b are arranged in proximity to each other via the hexagonal partition walls 32a and 32b so that their cross-sectional shapes are hexagonal, and exhibits substantially the same operational effects. Therefore, the same reference numerals are given and the description thereof is omitted.

[0077] On the other hand, while omitting the above-described heat insulation function, the pipe support attachment according to the present invention can be configured to enhance the vibration isolation function as shown in FIG. 7.

[0078] That is, the pipe support attachment in FIG. 7 is composed of two load transmission blocks 71a and 71b each having a semi-cylindrical shape. At an upper position thereof, an end face 12a of the load transmission block 71a abuts against an end face 12b of the load transmission block 71b facing it, and at a lower position thereof, an end face 13a of the load transmission block 71a abuts against an end face 13b of the load transmission block 71b facing it, so that they can be arranged adjacent to each other in a form of clamping the pipe 4.

[0079] In addition, 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 configurations and effects will be omitted. However, the load transmission blocks 71a, 71b are each provided with a plurality of protrusions 143a, 143b that are discretely arranged in the circumferential direction and extend toward the material axis of the piping when the piping 4 is sandwiched between them, and each tip surface 142a, 142b is formed so as to abut against the outer peripheral surface of the piping 4 as a piping side abutment surface.

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

[0081] Incidentally, the piping support attachment of this modified example has a configuration that is generally similar to that of the embodiment described above, except for the improved vibration-proofing properties achieved by providing protrusions 143a, 143b, and achieves substantially the same effects. Therefore, the same reference numerals will be used and their descriptions will be omitted.

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

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

[0084] 1 Pipe support attachment 2 Suspension band (pipe support band) 3 Pipe insertion part 4 Piping 6 Connecting part 11a, 11b Load transfer block 14a, 14b Pipe 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 transfer block 53a, 53b end surface (the other of a pair of opposing end surfaces) 54b Second ridge 54a Second Groove 71a, 71b Load transfer block 142a, 142b Tip surface (contact surface on pipe 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 attachment being composed of two load transfer blocks each having a semi-cylindrical shape and abutting against each other at a pair of opposing end faces so that the two load transfer blocks can be arranged adjacent to each other in a state of embracing the pipe, the two load transfer blocks being configured so that a pipe-side abutment surface that abuts against the outer circumferential 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 transfer 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 end faces constituting one of the pair of opposing end faces, and a first groove into which the first protrusion fits is formed on the other end face, 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 opposing end face, and a second groove into which the second protrusion fits is formed on the other end face, 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 protrusion is configured such 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 that of said first ridges.

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

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 so as to have a hexagonal cross section and is disposed adjacent to one another with a hexagonal partition therebetween.

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

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

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

Images