JP2023130661A - Piping support tool - Google Patents

Abstract

To provide a piping support tool which is easy in the insertion of piping into a support part, and favorable in construction performance.SOLUTION: A piping support tool 10 comprises: a tongue buckle 20 attached to a construction, and having fastening pieces 22, 23 extending downward; a support metal fixture 30 having a support part 33 formed by annularly curving an intermediate part of a band-shaped steel plate, for supporting a peripheral face 90a of a VP pipe 90 and suspension parts 31, 32 formed by annularly bending both end parts of the steel plate outward, and attached to the outside of the fastening pieces 22, 23; a spacer 40 provided inside the fastening pieces 22, 23; a bolt 50 penetrating the fastening pieces 22, 23, the suspension parts 31, 32 and the spacer 40: and a nut 60 for fastening the fastening pieces 22, 23 and the suspension parts 31, 32 together with the bolt 50. The tongue buckle 20, the support metal fixture 30 and the spacer 40 are deformed at time of fastening, and an interval between bent parts 34, 35 which are formed between the support part 33 and the suspension parts 31, 32 is equal to or larger than 9 mm before the deformation of the support metal fixture 30.SELECTED DRAWING: Figure 1

Description

The present invention relates to a piping support that is attached to a structure such as a building to support piping.

Structures such as buildings (as defined in the ``Basics of Design for Civil Engineering and Architecture'' (Ministry of Land, Infrastructure, Transport and Tourism), in this application, ``structures'' are defined as ``structures that have the intended function and resist action. An example of a pipe support that is attached to a pipe and supports a pipe is a pipe support used in a pipe support structure described in Patent Document 1, for example.

This pipe support structure has a first holding part and a second holding part which are half-shaped and have an inner circumferential surface that follows the circumferential surface of the pipe, and which are rotatably connected to each other via a hinge. a suspension member) and vibration-proof rubber attached to the first holding part and the second holding part of the piping support, and the pipe is held by the first holding part and the second holding part via the vibration-proofing rubber. Piping is supported by hanging it from the ceiling, and on the outside of a pair of opposing pieces (attached parts) of the tongue buckle (hanging part) that constitute the piping support, there is a mounting part of the first holding part and a second part of the tongue buckle. The attachment piece of the holding part is attached with a bolt and a nut, and a packing into which the bolt is inserted is provided inside the pair of opposing pieces.

JP2018-204773

By the way, the piping support described in Patent Document 1 supports the piping via vibration-proof rubber, but the piping support supports the VP pipe (PVC pipe, hard polyvinyl chloride pipe) etc. with the annular support part (patent document 1). In Document 1, the first holding part and the second holding part constitute a supporting part.) When supporting directly without using vibration isolating rubber, the mainstream method is to insert the pipe into the supporting part without removing the nut from the bolt. It is. However, in this case, there are problems in that the piping and the support part get caught, making it difficult to insert the piping, making it difficult to move the piping after insertion, and damaging the piping.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a pipe support that is easy to insert into a pipe support and has good workability.

In order to solve the above problems, a piping support according to the present invention includes a metal tongue buckle having a base attached to a structure, a pair of opposing pieces extending downward from the base, and a metal band buckle. A support part, in which the intermediate part of the plate is curved in an annular shape and supports the circumferential surface of the pipe, and both ends of the metal plate are bent towards the outside of the annular shape, and the outer sides of the pair of opposing pieces are a supporting metal fitting having a pair of attachment parts to be attached to; an elastically deformable spacer provided inside the pair of opposing pieces; and a spacer formed on each of the pair of opposing pieces, the pair of attachment parts, and the spacer. A bolt that is inserted through the insertion hole, and a nut that is screwed onto the bolt and fastens together with the bolt the pair of opposing pieces and the pair of attachment parts, and the tongue buckle, the support fitting, and the spacer The distance between a pair of bent parts that are deformed when fastened by bolts and nuts and is formed between the support part of the support metal fitting and the pair of attachment parts is 9 mm or more before the support metal fitting is deformed. It is characterized by

The spacer is preferably made of ethylene-vinyl acetate copolymer, and the bolt may be provided with a retaining portion that prevents the nut from coming off.

According to the present invention, the piping can be easily inserted into the support member, and workability can be improved.

FIG. 2 is an explanatory diagram showing a piping support according to an embodiment of the invention. (a) is a perspective view showing a test device for a pipe support, and (b) is an explanatory view showing a method for testing a pipe support using the test device in (a). FIG. 3 is an explanatory diagram showing test results by the test device of FIG. 2;

Embodiments for carrying out the present invention will be described based on the drawings.

As shown in FIG. 1, a piping support 10 according to the present embodiment is used for hanging a VP pipe 90 for building equipment, and is a hanging bolt whose upper end is fixed to a ceiling slab or the like of a building. (not shown), a support fitting 30 attached to the tongue buckle 20, a spacer 40 provided between a pair of fastening pieces 22 and 23 of the tongue buckle 20, which will be described later, and the tongue buckle 20, A bolt 50 and a nut 60 are provided to fasten (fasten) the support fitting 30 and the spacer 40.

The tongue buckle 20 is formed by pressing a band-shaped steel plate, and includes a base 21 that is rectangular in plan view, and a pair of fastening pieces 22 and 23 that extend downward from the base 21 and are elastically deformable with respect to the base 21. and has. An insertion hole 21a is formed in the center of the base 21, into which a rotation nut 24 screwed onto the hanging bolt is inserted. A flange portion 24a having a larger diameter than the insertion hole 21a is formed at the lower part of the rotary nut 24. When the rotation nut 24 is screwed onto the hanging bolt, the flange portion 24a extends around the insertion hole 21a of the base 21 from below. The base 21 is attached to the structure via hanging bolts.

The fastening piece 22 includes a first internodal part 22a extending downward from the left edge of the base 21 so as to be substantially perpendicular to the base 21, and a fastening piece 23 extending from the lower edge of the first internodal part 22a. a second internodal portion 22b that extends in an inclined direction toward the side; and an overlapping portion 22c that extends further downward from the lower edge of the second internodal portion 22b and overlaps with a hanging portion 31 of a support fitting 30, which will be described later. has.

The fastening piece 23 includes a first internodal part 23a extending downward from the right edge of the base 21 so as to be substantially perpendicular to the base 21, and a fastening piece 22 extending from the lower edge of the first internodal part 23a. a second internodal part 23b that extends in an inclined direction, and an overlapping part 23c that extends further downward from the lower edge of the second internodal part 23b and overlaps with a hanging part 32 of a support fitting 30, which will be described later. has.

A retaining portion 22d and a retaining portion 23d that stand up below the rotary nut 24 are formed in the first internodal portion 22a and the first internodal portion 23a to prevent the rotary nut 24 from falling out from the insertion hole 21a. . In addition, circular insertion holes 22e and 23e are formed in the overlapping portions 22c and 23c, through which shaft portions 51 of bolts 50 (described later) are inserted.

The support fitting 30 is formed by pressing a band-shaped steel plate, and includes a pair of hanging parts 31 and 32 that are attached so as to overlap and abut the overlapping parts 22c and 23c of the pair of fastening pieces 22 and 23, and the hanging parts 31 and 32. It has an annular support part 33 that is provided below and supports the peripheral surface 90a of the VP pipe 90.

The hanging portion 31 and the hanging portion 32 are formed by bending both ends of a steel plate toward the annular outside of the support portion 33, and each has a substantially rectangular flat plate shape when viewed from the side. A circular insertion hole 31a and a circular insertion hole 32a, through which the shaft portion 51 of the bolt 50 is inserted, are formed in the hanging portion 31 and the hanging portion 32. When the elastic force of the fastening pieces 22, 23 acts from the inside of the hanging parts 31, 32 when the bolt 50 and nut 60 are not tightened, the distance between the hanging parts 31 and 32 is It is maintained according to the force.

The support portion 33 is formed by an annularly curved intermediate portion of a steel plate, and when the tongue buckle 20 and the support fitting 30 are fastened with the bolt 50 and nut 60, the support portion 33 is formed into an annular shape with a diameter that is the same or approximately the same as the outer diameter of the VP pipe 90. It is formed to transform into. However, in the undeformed state where the bolt 50 and the nut 60 are not tightened, the support part 33 has a shape in which the ring expands according to the distance between the hanging part 31 and the hanging part 32, and the support part 33 and the The distance between the pair of bent parts 34 and 35 formed between the hanging parts 31 and 32 is 9 mm or more, and a gap 80 is secured between the supporting part 33 and the peripheral surface 90a of the VP pipe 90 inserted into the supporting part 33. .

The spacer 40 is made of EVA (ethylene vinyl acetate copolymer) in the shape of a disk or column, and has a circular insertion hole 40a formed in the center of the circle, into which the shaft portion 51 of the bolt 50 is inserted. The spacer 40 prevents the fastening piece 22 and the fastening piece 23 from approaching and connects the peripheral surface 90a of the VP pipe 90 and the support part 33 before the tongue buckle 20 and the support fitting 30 are fastened with the bolt 50 and nut 60. The fastening pieces 22 and 23 have a thickness of 9 mm or more in the opposing direction (however, the thickness is less than or equal to the distance between the pair of bent portions 34 and 35) so as to form a sufficient gap therebetween. On the other hand, when the tongue buckle 20 and the support fitting 30 are fastened using the bolts 50 and nuts 60, the spacer 40 is compressed from the left and right by the fastening pieces 22 and 23 and deforms so that its thickness decreases.

The bolt 50 has a shaft portion 51 with a thread formed around it, which is inserted into the insertion hole 31a of the hanging portion 31, the insertion hole 22e of the fastening piece 22, the insertion hole 40a of the spacer 40, the insertion hole 23e of the fastening piece 23, and the hanging portion 31. The head portion 52 is inserted into the insertion hole 32a of the portion 32 in this order, and the head portion 52 comes into contact with the hanging portion 31. The nut 60 is screwed into a portion of the shaft portion 51 that protrudes from the insertion hole 32a. The shaft portion 51 of the bolt 50 is provided with a retaining portion (not shown) whose threaded surface is irregularly machined so as to prevent the nut 60 from coming off.

The VP pipe 90 is inserted into the support part 33 having a widened ring shape with the bolt 50 and nut 60 untightened, and then the tongue buckle 20 is tightened by tightening the bolt 50 and nut 60 to a specified torque. and the support fittings 30 (the fastening pieces 22, 23 and the hanging parts 31, 32) are fastened, and when the fastening is completed, the spacer 40 is deformed so as to become so thin that its existence is invisible at first glance.

The piping support 10 according to the present embodiment includes a base 21 attached to a structure, a metal tongue buckle 20 having a pair of fastening pieces 22 and 23 extending downward from the base 21, and a band-shaped tongue buckle 20. The middle part of the steel plate is curved in an annular shape, and the supporting part 30 supports the circumferential surface 90a of the VP pipe 90, and both ends of the steel plate are bent toward the outside of the annular shape, and a pair of fastening pieces are formed. A support fitting 30 having a pair of hanging parts 31 and 32 attached to the outside of the fastening pieces 22 and 23, an elastically deformable spacer 40 provided inside the pair of fastening pieces 22 and 23, and a fastening piece 22 and 23, The bolts 50 are inserted through the insertion holes 22e, 23e, the insertion holes 31a, 32a, and the insertion hole 40a formed in the hanging parts 31, 32 and the spacer 40, and the fastening pieces 22, 23 are screwed together with the bolts 50. and a nut 60 that fastens the hanging parts 31 and 32, and the tongue buckle 20, the support fitting 30, and the spacer 40 are deformed when fastened with the bolt 50 and the nut 60, and the support part 33 of the support fitting 30 and the pair of hanging parts are deformed. 31 and 32 is 9 mm before the support fitting 30 is deformed, so there is a gap 80 between the peripheral surface 90a of the VP pipe 90 and the support part 30. is formed, and when a worker inserts the VP pipe 90 into the support part 30, it is difficult to get caught, and the insertion is easy and the workability is good.

Furthermore, even if an external force is applied to the piping support 10 during transportation, the spacer 40 having a thickness of 9 mm or more will not allow the pair of fastening pieces 22 and 23 to approach each other so that the opposing distance is less than 9 mm. This prevents the pair of hanging parts 31 and 32 from approaching and the support part 33 from decreasing in diameter, and secures the gap 80 between the peripheral surface 90a of the VP pipe 90 and the support part 30. However, when the VP pipe 90 is inserted into the support part 30, it is difficult to get caught, and good workability is maintained.

This effect can be confirmed using the test apparatus 100 shown in FIG. The test apparatus 100 includes a test machine pedestal 101, a long support beam 102 fixed to the test machine pedestal 101, a jig 104 that is erected on the test machine pedestal 101 and supports a cylindrical member 103, and a support beam. 102 and the piping support 110 (the distance between the pair of hanging parts 31 and 32 and the thickness of the spacer 40 is 9 mm or more, and the interval between the pair of hanging parts and the thickness of the spacer 40 are less than 9 mm) Other configurations include pipe supports 10 and similar pipe supports. A VP pipe 90 with a diameter of 32 mm is inserted. This VP pipe 90 is connected to a testing machine 108 (Autograph AG-50knI manufactured by Shimadzu Corporation) by a fishing line 107, and pulled by the testing machine 108 at a speed of 20 mm per minute.

FIG. 3 shows test results by the test device 100. That is, the same figure shows the displacement of the VP pipe 90 and the fluctuation of the tensile load when the piping support 110 is subjected to a tensile test with the distance between the pair of hanging parts set to 5 mm, 7 mm, 9 mm, 11 mm, and 13 mm. When the support portion 33 is caught, the tensile load increases. According to the test results, when the distance between the fastening pieces 22 and 23 is 5 mm and 7 mm, the maximum load reaches about 0.016 kN, and it is found that the VP pipe 90 is strongly caught on the support part 33, and the fastening It can be seen that when the distance between the pieces 22 and 23 is 9 mm or more, the maximum load remains at about 0.001 kN, and it is difficult to get caught.

Furthermore, in this embodiment, since the spacer 40 is made of EVA, the distance between the fastening pieces 22 and 23 can be suitably maintained even when external force is applied during transportation, and the spacer 40 can be made large during construction. Since it deforms and becomes thinner (to the point where it is no longer noticeable at first glance), an operator can easily recognize that the bolt 50 and nut 60 have been fastened.

Furthermore, in this embodiment, since the bolt 50 is provided with a retaining portion that prevents the nut 60 from falling off, the nut 60 may fall off during construction and the worker may lose the nut, or a replacement nut may have to be procured. It is possible to avoid a situation in which the construction is necessary, and to prevent deterioration of workability.

Although the embodiments of the present invention have been illustrated above, the embodiments of the present invention are not limited to those described above, and may be modified as appropriate without departing from the spirit of the invention.

For example, in the embodiment described above, the tongue buckle and the supporting metal fittings are made of band-shaped steel plates, but they may be made of other metals with different shapes, and the material of the spacer is not limited to EVA.

10 Piping support 20 Tongue buckle 21 Base 22 Fastening piece (opposing piece)
22e Insertion hole 23 Fastening piece (opposing piece)
23e Insertion hole 30 Support fitting 31 Hanging part (mounting part)
31a Insertion hole 32 Hanging part (mounting part)
32a Insertion hole 33 Support part 34 Bend part 35 Bend part 40 Spacer 40a Insertion hole 50 Bolt 60 Nut 90 VP pipe (piping)
90a circumferential surface

Claims (3)

a metal tongue buckle having a base attached to a structure and a pair of opposing pieces extending downward from the base;
The middle part of the band-shaped metal plate is curved in an annular shape, and the supporting part supports the circumferential surface of the pipe, and both ends of the metal plate are bent toward the outside of the annular shape, and the pair of opposing a support fitting having a pair of attachment parts attached to the outside of the piece;
an elastically deformable spacer provided inside the pair of opposing pieces;
a bolt that is inserted through an insertion hole formed in each of the pair of opposing pieces, the pair of attachment parts, and the spacer;
a nut that is screwed onto the bolt and fastens together with the bolt the pair of opposing pieces and the pair of attachment parts;
The tongue buckle, the support metal fitting, and the spacer are deformed when fastened with the bolt and the nut, and the distance between the pair of bent parts formed between the support part of the support metal fitting and the pair of attachment parts is , A piping support, characterized in that the support metal has a length of 9 mm or more before deformation. The piping support according to claim 1, wherein the spacer is made of ethylene vinyl acetate copolymer. 3. The piping support according to claim 1, wherein the bolt is provided with a retaining portion that prevents the nut from coming off.

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