KR102165208B1 - Pipe fixing device - Google Patents

Abstract

The present invention relates to a pipe fixing member of maintaining a coupling state of a first pipe flange (11) of a first pipe (10) and a second pipe flange (21) of a second pipe (20). According to the present invention, a plurality of bolt insertion holes (13) formed to penetrate, and ring insertion grooves (15, 25) formed to be recessed at a predetermined depth with respect to an outer plate surface around the bolt insertion holes (13) are provided in first and second pipe flanges (11, 21). Also, the first and second piping flanges (11, 21) are arranged to be in contact with each other, and then are coupled to each other by a plurality of bolts (30) and nuts (40). The pipe fixing member of the present invention comprises: an anti-loosening ring (110) coupled to ring insertion grooves (15, 25); a cap (120) detachably coupled to the anti-loosening ring (110) to support a nut (40) not to be loosened; and a double washer (130) coupled to the inside of the anti-loosening ring (110) to prevent the loosening of a bolt (30) and the nut (40). According to the present invention, it is possible to stably maintain the coupling of a pair of pipes for a long time with a simple structure.

Description

Pipe fixing device {PIPE FIXING DEVICE}

The present invention relates to a pipe fixing member, and more particularly, to a pipe fixing member to maintain a firmly coupled state of the pipes coupled to each other.

In general, pipes are used by connecting a plurality of pipes manufactured with a certain length to each other. At this time, a flange is provided at an end of each pipe, and flanges of neighboring pipes are coupled to each other by bolts and nuts to connect the pipes.

However, if the pipe is used for a long time while the adjacent pipe is fixed by the bolt and nut, the bolt and the nut are loosened due to the flow of gas or fluid flowing through the inside, or external force. When the bolt and nut are loosened, there may be a problem that gas or fluid leaks between neighboring pipes.

An object of the present invention is to solve the above-described problem, to provide a pipe fixing member that prevents loosening of bolts and nuts connecting neighboring pipes to each other so that the coupling state of the pipes is firmly maintained.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

The object of the present invention can be achieved by a pipe fixing member that maintains the coupled state of the first pipe flange 11 of the first pipe 10 and the second pipe flange 21 of the second pipe 20 . The pipe fixing member of the present invention includes a plurality of bolt insertion holes 13 through which each of the first pipe flange 11 and the second pipe flange 21 is formed, and the outer side around the bolt insertion hole 13 Ring insertion grooves (15, 25) formed to be depressed at a predetermined depth with respect to the plate surface are provided, and the first pipe flange (11) and the second pipe flange (21) are disposed to contact each other, and then a plurality of bolts ( 30) and a nut 40 coupled to each other, the loosening prevention ring 110 coupled to the ring insertion groove (15, 25); A cap 120 detachably coupled to the loosening prevention ring 110 to support the nut 40 from loosening; It characterized in that it comprises a double washer 130 that is coupled to the inside of the loosening prevention ring 110 to prevent loosening of the bolt 30 and the nut 40.

According to one embodiment, the anti-loosening ring 110 is formed to have an outer diameter corresponding to the ring insertion grooves (15, 25) and a coupling ring (113) fitted into the ring insertion grooves (15, 25) ; It includes an outer ring 111 formed to be spaced apart at a predetermined interval inside the coupling ring 113, the cap 120 is formed to be recessed between the coupling ring 113 and the outer ring 111 A cap insertion groove 111b to be inserted is formed, an outer ratchet 111a is formed on the inner diameter of the outer ring 111, and a certain area is formed extending radially inward on the bottom surface of the outer ring 111 A washer mounting surface 111e is provided, and a hook insertion hole 111c is provided between the coupling ring 113 and the outer ring 111 and formed through a predetermined length in the circumferential direction corresponding to the outer diameter of the cap 120 In addition, a hook engaging protrusion 111d formed to be recessed inwardly to a predetermined depth may be stepped on the bottom surface in which the hook insertion hole 111c is formed.

According to an embodiment, the double washer 130 is integrally coupled to an upper washer 131 seated on the washer seating surface 111e and a lower portion of the upper washer 131 to the outer ring 111 Includes a lower washer 133 disposed in the bolt coupling hole 115 formed through, and the upper washer 131 has an inner diameter formed to correspond to the outer diameter of the bolt shaft 31, and an outer diameter of the washer seating surface ( 111e), and the lower washer 133 may have an inner diameter corresponding to the outer diameter of the bolt shaft 31 and an outer diameter corresponding to the bolt coupling hole 115.

According to an embodiment, the cap 120 is formed to have an outer diameter inserted into the cap insertion groove 111b, and an inner insertion tube inserted into the inner diameter of the outer ring 111 inside the cap 120 (121) is provided, and a nut insertion hole into which the nut 40 is inserted is formed in a central region of the inner insertion pipe 121, and an inner tooth meshing with the nut 40 is formed on an inner wall surface of the nut insertion hole. (122) is formed, the outer periphery of the cap 120 is formed to elastically protrude outward in the radial direction in a facing direction, and is inserted into the hook insertion hole 111c, and the hook engaging jaw 111d at the lower end ) Is provided with a pair of fixing hooks 124 engaged therein, and an inner ratchet 123 engaged with the external ratchet 111a may be provided on the outer wall surface of the inner insertion pipe 121 .

On the other hand, the object of the present invention is a pipe flange (11, 21) to which the bolt (30) and the nut (40) are coupled; Includes a pipe fixing member 100 provided on the pipe flanges 11 and 21 to prevent loosening of the bolt 30 and the nut 40, and the bolt 30 is provided on the pipe flanges 11 and 21. ) And a bolt insertion hole (13,23) into which the nut 40 is inserted, and a ring insertion groove (15,25) recessed at a predetermined depth around the bolt insertion hole (13,23), and fix the pipe The member 100 includes an anti-loosening ring 110 coupled to the ring insertion grooves 15 and 25; A cap 120 detachably coupled to the loosening prevention ring 110 to support the nut 40 from loosening; It may be achieved by a pipe, characterized in that it includes a double washer 130 coupled to the inside of the loosening prevention ring 110 to prevent the bolt 30 and the nut 40 from loosening.

According to an embodiment, the anti-loosening ring 110 may be manufactured integrally with the pipe flanges 11 and 21, or may be manufactured independently of the pipe flanges 11 and 21 and then combined.

According to an embodiment, the double washer 130 may be provided integrally with the loosening prevention ring 110 or may be detachably coupled.

The pipe fixing member according to the present invention is coupled to each periphery of the bolt insertion hole of the pair of pipe flanges to prevent loosening of the bolt and nut. Accordingly, there is an advantage in that the combined state of a pair of pipes is stably maintained for a long time with a simple structure.

In addition, the pipe fixing member according to the present invention has the effect of stably preventing the rotation of the bolt and nut as the outer ratchet formed on the loosening prevention ring and the inner ratchet formed on the cap are firmly engaged with each other.

1 is a perspective view showing a state in which neighboring pipes are coupled by a pipe fixing member according to the present invention;
2 is a perspective view showing a pipe to which a pipe fixing member according to the present invention is combined,
3 is an exploded perspective view showing an exploded process in which the pipe fixing member according to the present invention is coupled to the pipe;
Figure 4 is an exemplary view showing the coupling structure of the cap and the loosening prevention ring of the pipe fixing member according to the present invention,
5 is a front cross-sectional view showing a front cross-sectional configuration of a pipe fixing member according to the present invention,
6 is a cross-sectional view showing a cross-sectional configuration in a state in which a pair of pipes are coupled by a pipe fixing member according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those with average knowledge in the art. Accordingly, the shape of the element in the drawings may be exaggerated to emphasize a clearer description. It should be noted that in each drawing, the same member may be indicated by the same reference numeral. Detailed descriptions of known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a perspective view showing a state in which a first pipe 10 and a second pipe 20 arranged adjacently by a pipe fixing member 100 according to the present invention are coupled to each other, and FIG. 2 is a pipe fixing member ( 100) is a perspective view showing the configuration of the first pipe 10 is coupled, Figure 3 is a diagram showing a process in which the first pipe 10 and the second pipe 20 are coupled by the pipe fixing member 100 It is an exploded perspective view.

Prior to the description, the first pipe 10 and the second pipe 20 arranged adjacent to each other are provided with a first pipe flange 11 and a second pipe flange 21 at both ends, respectively. The first pipe flange (11) and the second pipe flange (21) are arranged in contact with each other, and the bolt (30) is inserted through the bolt insertion holes (13,23) formed through each pipe flange (11,21) surface. Then, the nut 40 is fastened to the bolt shaft 31 exposed to the outside to complete the coupling of the first pipe 10 and the second pipe 20.

The pipe fixing member 100 according to the present invention is coupled to the bolt insertion holes 13 and 23 of the first pipe flange 11 and the second pipe flange 21 coupled to each other, so that the bolt 30 and the nut 40 ) To be prevented from loosening, so that the combined state of the first pipe 10 and the second pipe 20 is firmly maintained.

Here, as shown in FIG. 3, ring insertion grooves 15 and 25 are provided around the bolt insertion holes 13 and 23 of each of the pipe flanges 11 and 21, which are recessed at a predetermined depth with respect to the plate surface.

The pipe fixing member 100 of the present invention is coupled to the bolt insertion hole 13 of each pipe flange 11 and 21 to prevent loosening of the bolt 30 and the nut 40. The pipe fixing member 100 is supported so as to prevent loosening of the nut 40 by being detachably coupled to the loosening prevention ring 110 coupled to the ring insertion grooves 15 and 25, and the loosening prevention ring 110 It includes a cap 120 and a double washer 130 coupled to the inside of the loosening prevention ring 110.

The loosening prevention ring 110 is coupled to the ring insertion grooves 15 and 25 of each of the pipe flanges 11 and 21 to prevent loosening of the bolt 30 or nut 40. 4 is an exemplary view showing a coupling configuration of the outer ring 111 and the cap 120 forming the loosening prevention ring 110.

The loosening prevention ring 110 includes a coupling ring 113 fitted into the ring insertion grooves 15 and 25, and an outer ring 111 provided inside the coupling ring 113 concentrically with the coupling ring 113 to be spaced apart from the coupling ring 113 ), and a cap 120 that is detachably fitted to the outer ring 111.

The outer ring 111 is formed in a ring shape as shown in FIGS. 3 and 4. The outer ring 111 is divided by a cap insertion groove 111b recessed downward in the boundary area with the coupling ring 113. The cap 120 is fitted into the cap insertion groove 111b.

A bolt coupling hole 115 is formed through the inside of the outer ring 111 so that the bolt 30 is inserted. An outer ratchet 111a is formed on the inner wall surface of the outer ring 111. The outer ratchet 111a has a plurality of teeth densely formed along the circumferential direction. When the outer ratchet 111a is coupled to the cap 120 to the loosening prevention ring 110, the bolt 30 and the nut are engaged with the inner ratchet 123 of the cap 120 as shown enlarged in FIG. 5. (40) to prevent rotation.

A washer seating surface 111e extending a predetermined area radially inward is provided on the bottom of the outer ring 111. The upper washer 131 of the double washer 130 is seated on the washer seating surface 111e.

Meanwhile, between the outer ring 111 and the coupling ring 113, a hook insertion hole 111c is formed to pass through a predetermined length along the circumferential direction in a direction facing each other. The fixing hook 124 of the cap 120 is coupled to the pair of hook insertion holes 111c. The hook insertion hole 111c and the cap insertion hole 111b are formed in a circle having the same curvature, and the cap insertion groove 111b is provided in a shape that is depressed by a certain depth, and the hook insertion hole 111c is formed to penetrate. .

At this time, as shown in Fig. 3, the bottom surface of the coupling ring 113 in which the hook insertion hole 111c is formed is provided with a hook engaging jaw 111d formed to be stepped at a predetermined depth. The hook head (124a) of the fixing hook (124) is engaged with the hook hook (111d) so that the coupling state of the outer ring (111) and the cap (120) is maintained.

The coupling ring 113 is formed to correspond to the inner diameter of the ring insertion grooves 15 and 25 formed in the pipe flanges 11 and 21. The coupling ring 113 is inserted into the ring insertion grooves 15 and 25 so that the position of the loosening prevention ring 110 is fixed. The coupling ring 113 may be coupled by welding or the like, or may be integrally manufactured when manufacturing a pipe flange.

The cap 120 is detachably coupled to the outer ring 111 and supports the nut 40 to prevent loosening. As shown in FIG. 4, the cap 120 is formed to correspond to the cap insertion groove 111b and is fitted into the cap insertion groove 111b.

Inside the cap 120, as shown in FIG. 3, an inner insertion tube 121 is formed toward the lower side. A bolt insertion hole into which the bolt 30 is inserted is formed through the central region of the inner insertion tube 121. An inner tooth 122 is formed on the inner wall surface of the inner insertion tube 121, and an inner ratchet 123 is provided on the outer wall surface of the inner insertion tube 121.

The inner teeth 122 are formed to have irregularities repeatedly toward the outer side in the radial direction of the inner insertion tube 121. The inner teeth 122 are formed to fit the corners of the bolts 30 or nuts 40 in a hexagonal or polygonal shape.

The inner ratchet 123 is unevenly formed to correspond to the outer ratchet 111a of the outer ring 111 on the outer wall surface of the inner insertion pipe 121 as shown in FIG. 5. When the cap 120 is fitted, the inner ratchet 123 engages with the outer ratchet 111a to prevent the cap 120 from rotating. As a result, rotation of the nut 40 inserted into the inner teeth 122 of the cap 120 is prevented, and rotation of the bolt 30 coupled to the nut 40 is also prevented.

Meanwhile, a pair of fixing hooks 124 are provided on the outer periphery of the cap 120 in a facing direction. The fixing hook 124 is formed so that the hook head 124a protrudes from the lower portion. When the cap 120 is fitted into the outer ring 111, the fixing hook 124 is elastically crimped inward and inserted into the hook insertion hole 111c. In addition, the hook head 124a protruding to the outside of the hook insertion hole 111c is elastically returned as shown in FIG. 5 and is hooked on the hook engaging jaw 111d.

As the hook head 124a is hooked on the hook hook 111d, the cap 120 and the outer ring 111 are fixedly maintained.

The double washer 130 is fitted to the washer seating surface 111e formed on the bottom surface of the outer ring 111 to prevent loosening of the bolt 30 or nut 40, thereby improving the coupling binding force. The double washer 130 is formed by integrally combining the upper washer 131 and the lower washer 133 having different outer diameters as shown in FIG. 4.

The outer diameter R1 of the upper washer 131 is formed to be smaller than an imaginary circle internally in contact with the outer ratchet 111a and is provided to be seated on the washer seating surface 111e. The inner diameter of the upper washer 131 is formed to correspond to the bolt shaft 31 of the bolt 30.

The outer diameter R2 of the lower washer 133 is formed to correspond to the bolt coupling hole 115. Accordingly, when the double washer 130 is inserted into the outer ring 111, the lower washer 133 is inserted into the bolt coupling hole 115 on the rear surface to be exposed to the outside, as shown in FIG. 6. The inner diameter of the lower washer 133 is formed to correspond to the bolt shaft 31 of the bolt 30 in the same way as the upper washer 131.

The thickness d1 of the upper washer 131 is formed to be about 0.5mm, and the thickness d2 of the lower washer 133 is formed to be about 2mm thicker than the upper washer 131.

Thereby, as shown in Figure 6, after the double washer 130 is fitted to the washer seating surface 111e of the outer ring 111, the bolt 30 or the nut 40 is coupled, and the cap 120 is the outer ring When coupled to 111, the lower portion of the bolt 30 or the nut 40 presses the upper washer 131, and the bolt shaft 31 is located inside the lower washer 133.

Accordingly, when the bolt 30 is inserted and fastened to the nut 40, the upper washer 131 and the lower washer 133 are moved toward the bolt coupling hole 115 by the fastening force of the bolt 30 and the nut 40. As the pressure is applied, the contact area of the bolt 30 or the nut 40 is increased, and the torque increases as the friction area increases, thereby preventing loosening.

In particular, in the present invention, the upper washer 131 and the lower washer 133 having different diameters from each other support the lower portion of the bolt 30 or nut 40 and the bolt shaft 31 together to further increase the contact area. As a result, the frictional area becomes larger, and the anti-loosening effect is also increased.

Here, the double washer 130 according to the present invention is a form in which the upper washer 131 and the lower washer 133 are integrally combined, but may be independently formed in some cases.

In addition, the double washer 130 may be manufactured in a state integrally fixed to the washer seating surface 111e of the loosening prevention ring 110 in some cases.

Here, the pipe fixing member 100 according to the present invention is manufactured integrally with each of the pipe flanges 11 and 21, or welded to the ring insertion grooves 15 and 25 of the pipe flanges 11 and 21. It can be prepared by combining.

A process of combining the first pipe 10 and the second pipe 20 using the pipe fixing member 100 according to the present invention having such a configuration will be described with reference to FIGS. 1 to 6.

As shown in FIG. 2, the pipe fixing member 100 is coupled to the bolt insertion hole 13 of the first pipe 10 and the second pipe 20. The operator arranges the first pipe flange 11 of the first pipe 10 and the second pipe flange 21 of the second pipe 20 so as to contact each other.

The operator couples the double washer 130 to the washer seating surface 111e of the loosening prevention ring 110 forming each pipe fixing member 100. The lower washer 133 whose outer diameter corresponds to the bolt coupling hole 115 is located inside the bolt coupling hole 115, and the upper washer 131 is seated on the washer seating surface 111e.

The bolt shaft 31 of the bolt 30 is inserted through the second bolt insertion hole 23, and the bolt shaft 31 is exposed to the outside through the first bolt insertion hole 13. The operator inserts the nut 40 into the bolt shaft 31 exposed through the first bolt insertion hole 13. Then, the nut 40 is rotated in a direction fastened with the bolt 30.

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Thereby, as shown in FIG. 6, the bolt 30 is fitted into the loosening prevention ring 110 of the second pipe flange 21, and the nut 40 is the loosening prevention ring 110 of the first pipe flange 11. ).

When the nut 40 is screwed to the bolt shaft 31 by rotating the nut 40 in the direction fastened with the bolt 30, the lower portion of the nut 40 and the bolt 30 comes into contact with the double washer 130, and the double washer ( 130) is compressed and acts on a frictional force to prevent loosening of the nut 40 and the bolt 30 and to increase the coupling restraint force.

The cap 120 is fitted into the cap insertion groove 111b, and the fixing hook 124 is fitted into the hook engaging protrusion 111d. And, the hook head (124a) is hooked on the hook (111d) is fixed to the cap 120 and the outer ring 111 is completed.

The bolt 30 and the nut 40 are externally coupled to the inner teeth 122 of the inner insertion tube 121 formed in the cap 120, respectively. The cap 120 is in a state in which rotation is limited because the inner ratchet 123 is engaged with the external ratchet 111a, so that the bolt 30 and the nut 40 are not released even if external force is applied after the fastening is completed. Can be kept stable.

In particular, since the fixed state of the outer ring 111 and the cap 120 is firmly maintained by a pair of fixing hooks 124, the bolt 30 and the nut 40 are combined unless the operator separates them. Will be maintained.

In this way, the pipe fixing member 100 of the present invention integrally coupled to each of the pipe flanges 11 and 21 is a bolt 30 and a nut 40 by a coupling structure of a double washer 130 and an anti-loosening ring 110. Prevent loosening. Accordingly, even if the first pipe 10 and the second pipe 20 are used for a long time, the combined state of the first pipe 10 and the second pipe 20 can be stably maintained.

As described above, the pipe fixing member according to the present invention is coupled to a pair of pipe flanges to prevent loosening of the bolt and nut. This ensures that the coupled state of the pair of pipes is stably maintained for a long time.

Further, in the pipe fixing member according to the present invention, a double washer having a shape in which washers having different outer diameters are overlapped on the bottom surface of the outer ring may prevent loosening of the bolt and nut, thereby improving the coupling restraint force.

The embodiment of the pipe fixing member of the present invention described above is only illustrative, and those of ordinary skill in the art to which the present invention belongs are well aware that various modifications and other equivalent embodiments are possible. I will be able to. Therefore, it will be appreciated that the present invention is not limited to the form mentioned in the detailed description above. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. In addition, the present invention is to be understood as including the spirit of the present invention as defined by the appended claims and all modifications, equivalents and substitutes within the scope thereof.

10: first piping 11: first piping flange
13: first bolt insertion hole 15: first ring insertion groove
20: 2nd piping 21: 2nd piping flange
23: second bolt insertion hole 25: second ring insertion groove
30: bolt 40: nut
100: pipe fixing material
110: anti-loosening ring 111: outer ring
111a: outer ratchet 111b: cap insertion groove
111c: hook insertion hole 111d: hook locking jaw
111e: washer seating surface 113: coupling ring
115: bolt coupling hole 120: cap
121: internal intubation tube 122: internal teeth
123: inner ratchet 124: fixed hook
124a: hook head 130: double washer
131: upper washer 133: lower washer

Claims (7)

In the pipe fixing member that maintains the combined state of the first pipe flange 11 of the first pipe 10 and the second pipe flange 21 of the second pipe 20,
The first piping flange 11 and the second piping flange 21 have a plurality of bolt insertion holes 13 each penetrating through, and the bolt insertion hole 13 is formed to be depressed at a predetermined depth with respect to the outer plate surface around the bolt insertion hole 13 Is provided with a ring insertion groove (15, 25),
After the first pipe flange 11 and the second pipe flange 21 are arranged in contact with each other, they are coupled to each other by a plurality of bolts 30 and nuts 40,
An anti-loosening ring 110 coupled to the ring insertion grooves 15 and 25;
A cap 120 detachably coupled to the loosening prevention ring 110 to support the nut 40 from loosening;
Including a double washer 130 coupled to the inside of the loosening prevention ring 110 to prevent loosening of the bolt 30 and the nut 40,
The loosening prevention ring 110,
A coupling ring 113 formed to have an outer diameter corresponding to the ring insertion grooves (15,25) and fitted into the ring insertion grooves (15,25);
It includes an outer ring 111 formed to be spaced apart at a predetermined interval inside the coupling ring 113,
A cap insertion groove 111b is formed between the coupling ring 113 and the outer ring 111 to be recessed downward and into which the cap 120 is inserted,
An outer ratchet 111a is formed on the inner diameter of the outer ring 111,
A washer seating surface 111e extending radially inward by a predetermined area is provided on the bottom surface of the outer ring 111,
A hook insertion hole 111c formed through a predetermined length in the circumferential direction corresponding to the outer diameter of the cap 120 is provided between the coupling ring 113 and the outer ring 111,
A pipe fixing member, characterized in that a hook-hanging jaw (111d) formed to be depressed inward to a predetermined depth is stepped on the bottom surface in which the hook insertion hole (111c) is formed.
delete The method of claim 1,
The double washer 130 is integrally coupled to the upper washer 131 seated on the washer seating surface 111e and the lower portion of the upper washer 131, and a bolt coupling hole formed through the outer ring 111 It includes a lower washer 133 disposed in the 115,
The upper washer 131 has an inner diameter formed to correspond to an outer diameter of the bolt shaft 31 and an outer diameter formed to correspond to the diameter of the washer seating surface 111e,
The lower washer 133 is a pipe fixing member, characterized in that the inner diameter is formed to correspond to the outer diameter of the bolt shaft (31) and the outer diameter is formed to correspond to the bolt coupling hole (115).
The method of claim 3,
The cap 120 is formed to have an outer diameter inserted into the cap insertion groove 111b,
The cap 120 is provided with an inner insertion tube 121 inserted into the inner diameter of the outer ring 111,
A nut insertion hole into which the nut 40 is inserted is formed in the central region of the inner insertion pipe 121,
An inner tooth 122 meshing with the nut 40 is formed on the inner wall surface of the nut insertion hole,
The outer periphery of the cap 120 is formed to resiliently protrude radially outward in a facing direction, is inserted into the hook insertion hole 111c, and is engaged with the hook engaging protrusion 111d at the lower end The fixing hook 124 is provided,
A pipe fixing member, characterized in that an inner ratchet 123 engaged with the external ratchet 111a is provided on an outer wall surface of the internal insertion pipe 121.
Piping flanges 11 and 21 to which the bolt 30 and the nut 40 are coupled;
Includes a pipe fixing member 100 provided on the pipe flanges 11 and 21 to prevent loosening of the bolt 30 and the nut 40,
In the pipe flanges (11, 21), bolt insertion holes (13, 23) into which the bolts (30) and the nut (40) are inserted, and a ring inserted into a predetermined depth around the bolt insertion holes (13,23) Grooves 15 and 25 are provided,
The pipe fixing member 100,
An anti-loosening ring 110 coupled to the ring insertion grooves 15 and 25;
A cap 120 detachably coupled to the loosening prevention ring 110 to support the nut 40 from loosening;
Including a double washer 130 coupled to the inside of the loosening prevention ring 110 to prevent loosening of the bolt 30 and the nut 40,
The loosening prevention ring 110,
A coupling ring 113 formed to have an outer diameter corresponding to the ring insertion grooves (15,25) and fitted into the ring insertion grooves (15,25);
It includes an outer ring 111 formed to be spaced apart at a predetermined interval inside the coupling ring 113,
A cap insertion groove 111b is formed between the coupling ring 113 and the outer ring 111 to be recessed downward and into which the cap 120 is inserted,
An outer ratchet 111a is formed on the inner diameter of the outer ring 111,
A washer seating surface 111e extending radially inward by a predetermined area is provided on the bottom surface of the outer ring 111,
A hook insertion hole 111c formed through a predetermined length in the circumferential direction corresponding to the outer diameter of the cap 120 is provided between the coupling ring 113 and the outer ring 111,
A pipe, characterized in that the hook insertion protrusion (111d) formed to be depressed inward to a predetermined depth is stepped on the bottom surface in which the hook insertion hole (111c) is formed.
The method of claim 5,
The piping, characterized in that the loosening prevention ring 110 is manufactured integrally with the piping flanges (11, 21), or manufactured independently from the piping flanges (11, 21) and then coupled.
The method of claim 6,
The double washer 130 is a pipe, characterized in that provided integrally with the loosening prevention ring (110) or detachably coupled.

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