Piping fixing device

Abstract

This prevents pipes from moving in the longitudinal direction during an earthquake. [Solution] The pipe fixing device 1 for fixing the pipe 2 comprises a base 3 that supports the pipe 2, a U-shaped fixing device 4 that fixes the pipe 2 to the base 3 while pressing it against it, and a bolt member 5 that is attached to the base 3 from the lower side of the base 3 and has its tip embedded in the outer surface of the pipe 2 supported by the base 3.

Description

Technical Field

[0001] The present invention relates to a pipe fixing device for fixing various pipes installed in a building.

Background Art

[0002] Various pipes are installed in a building. For example, metal pipes such as steel pipes are often used for pipes that supply liquids such as water. Also, depending on the liquid supply amount, pipes with outer diameter dimensions such as 50A (outer diameter 60.5 mm), 65A (outer diameter 76.3 mm), 80A (outer diameter 89.1 mm), 90A (101.6 mm), 100A (outer diameter 114.3 mm) are installed. In addition, pipes with outer dimension exceeding 100A may be installed.

[0003] This type of pipe is fixed to a base such as a gantry or a bracket using a U-shaped band or a U-shaped bolt, and is installed on a floor surface or a ceiling space.

[0004] Conventionally, in order to ensure heat insulation at the location where the pipe is fixed to a base such as a gantry or a bracket, for example, a bottom block having heat insulation is disposed on the base, the pipe is installed in a semi-circular notch formed in the bottom block, and then a top block covering the upper half of the pipe is disposed, and a method of fixing the pipe held inside the bottom block and the top block to the base using a U-shaped bolt or the like has been proposed (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the fixing method described in Patent Document 1 has a problem in that if strong stress occurs in the longitudinal direction of the pipe due to an earthquake or the like, the pipe fixed with U-bolts or the like will move in the longitudinal direction, causing the pipe to break. For example, if the pipe moves in the longitudinal direction, stress will concentrate at the elbow section (the bent part of the pipe) located in the direction in which the pipe is extended, causing the elbow section to break. This type of problem can occur even if insulation blocks are not placed around the pipe. Therefore, when installing pipes, it is necessary to assume a large-scale earthquake and design the system so that the pipe does not move in the longitudinal direction.

[0007] The present invention aims to solve the above-mentioned problems and to provide a pipe fixing device that can suppress the longitudinal movement of pipes during earthquakes or other events. [Means for solving the problem]

[0008] To achieve the above objective, firstly, the present invention provides a pipe fixing device for fixing pipes, comprising: a base for supporting the pipes; a U-shaped fixing device for fixing the pipes to the base in a pressed state; and a bolt member attached to the base from the lower side of the base and having its tip embedded in the outer surface of the pipes supported by the base. A holding member is placed on the base and holds the outer surface of the piping, Equipped with The base has a mounting hole for inserting the bolt member, and the retaining member has a screw hole for screwing onto the male thread of the bolt member inserted into the mounting hole. This configuration is characterized by the following:

[0009] Secondly, the present invention relates to a pipe fixing device having the first configuration, wherein the fixing device has male screws formed on both sides of a U-shape, and the base has a pair of insertion holes on both sides in the diametrical direction of the pipe through which the male screws are inserted. The mounting hole is A line passing through the center of the pair of insertion holes and formed on a line parallel to the axial direction of the piping. Ruko It is a structure characterized by the following:

[0012] The 3 Therefore, the present invention relates to the first 1 or 2 In a pipe fixing device having the above configuration, the diameter of the mounting hole is larger than the outer diameter of the bolt member.

[0013] Article 4 5 of the present invention provides a pipe fixing device having the configuration of Article 1 or Article 2 5, wherein the upper surface of the holding member has a concave shape that conforms to the outer peripheral surface of the pipe.

[0014] Article 5 5 of the present invention provides a pipe fixing device having the configuration of Article 1 or second 5, wherein the bolt member has a protruding portion with a ring-shaped tip, and the protruding portion is embedded in the outer peripheral surface of the pipe. [Effect of the Invention]

[0015] According to the present invention, since the tip of the bolt member is fixed in a state of being embedded in the outer peripheral surface of the pipe supported by the base, it is possible to suppress the movement of the pipe in the longitudinal direction during an earthquake or the like. [Brief Description of the Drawings]

[0016] [Figure 1] Fig. 1 is a perspective view showing a pipe fixing device according to the first embodiment. [Figure 2] Fig. 2 is a view showing one aspect of the bolt member. [Figure 3] Fig. 3 is a partially cutaway cross-sectional view of the pipe fixing device with the bolt member attached, viewed from the axial direction of the pipe. [Figure 4] Fig. 4 is a cross-sectional view of the pipe fixing device with the bolt member attached, viewed from the radial direction of the pipe. [Figure 5] Fig. 5 is a view for explaining the support pressure strength by the bolt member. [Figure 6] Fig. 6 is a view showing the relationship between the embedding depth and the supportable length. [Figure 7] Fig. 7 is a perspective view showing a pipe fixing device according to the second embodiment. [Figure 8] Fig. 8 is an enlarged view showing the holding member. [Figure 9] Fig. 9 is a view showing the pipe fixing device with the bolt member attached. [Figure 10] It is a figure showing a modification example of a holding member. [Figure 11] It is a figure showing another modification example of a holding member. [Figure 12] It is a figure showing a bolt member having a protruding portion with a conical tip.

Mode for Carrying Out the Invention

[0017] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In each of the drawings referred to below, members common to each other are denoted by the same reference numerals, and redundant descriptions thereof are omitted.

[0018] (First Embodiment) The first embodiment of the present invention will be described. FIG. 1 is a perspective view showing a pipe fixing device 1 in the first embodiment of the present invention. FIG. 1(a) is a perspective view showing the pipe fixing device 1 in a state where each member is assembled and the pipe is fixed, and FIG. 1(b) is a perspective view showing the pipe fixing device 1 before assembling each member. The XYZ three-dimensional coordinate system shown in FIG. 1 is a coordinate system in which the XY plane is a horizontal plane and the Z direction is a vertical direction, and is a coordinate system common to the coordinate systems shown in other figures.

[0019] The pipe fixing device 1 supports, for example, a pipe 2 installed in the horizontal direction and fixes the pipe 2 so that the pipe 2 does not move in the longitudinal direction (X direction) of the pipe 2. For example, the pipe 2 is a steel pipe through which a liquid flows inside. This pipe fixing device 1 includes a base 3 that supports the pipe 2, a U-shaped fixture 4, and a bolt member 5.

[0020] The base 3 is formed of, for example, a grooved steel having a U-shaped cross section and has a support plate portion 3a that supports the pipe 2. This support plate portion 3a forms a horizontal plane that supports the pipe 2. The base 3 is arranged in a direction (Y direction) orthogonal to the longitudinal direction (X direction) of the pipe 2, and both ends thereof are fixed to the structure of the building. For example, the base 3 is installed in a state of being suspended in the ceiling space of the building, installed so as to protrude horizontally from the wall surface, or installed on the floor surface.

[0021] As shown in Figure 1(b), the base 3 has a pair of through holes 31, 31 formed in the support plate portion 3a. The pair of through holes 31, 31 are formed at predetermined intervals along the longitudinal direction (Y direction) of the base 3. The interval between these pair of through holes 31, 31 corresponds to the diameter of the pipe 2.

[0022] Furthermore, the base 3 has mounting holes 32, 32 that pass through the centers of the pair of insertion holes 31, 31 and are formed on a line L parallel to the axial direction (X direction) of the piping 2. Figure 1(b) illustrates the case where two mounting holes 32, 32 are formed on the line L of the base 3, but the number of mounting holes 32 may be one or three or more.

[0023] The pipe 2 is installed on the support plate portion 3a such that its central axis is located directly above the line L of the base 3. That is, the pipe 2 is installed on the base 3 such that its outer surface contacts the support plate portion 3a along the line L of the base 3. Once the pipe 2 is installed on the base 3, the base 3 supports the pipe 2 at a predetermined position in the longitudinal direction.

[0024] The U-shaped fastener 4 is, for example, made of a U-shaped bolt, and presses and secures the pipe 2 installed on the base 3 to the base 3. The fastener 4 may also be made of a U-shaped band.

[0025] The fastener 4 has a semicircular pressing portion 41 that joins to the outer surface of the pipe 2, and a pair of male screws 42, 42 extending downward from both sides of the pressing portion 41. The pair of male screws 42, 42 extend downward at intervals equal to the outer diameter of the pipe 2. These pair of male screws 42, 42 are positioned on both sides in the diametrical direction of the pipe 2 installed on the base 3, and clamp the pipe 2. The pair of male screws 42, 42 are then inserted into a pair of through holes 31, 31 formed in the support plate portion 3a of the base 3. The pair of through holes 31, 31 are slightly larger than the outer diameter of the male screws 42, 42.

[0026] When the pair of male screws 42, 42 are inserted into the through holes 31, 31 with the pipe 2 sandwiched in between, the lower ends of the pair of male screws 42, 42 protrude below the support plate portion 3a. Nuts 43, 43 are then attached to these protruding male screws 42, 42. As the nuts 43, 43 are tightened against the male screws 42, 42, the pressing portion 41 presses the pipe 2 against the base 3 and fixes it in place.

[0027] The fixing device 4 secures the pipe 2 to the base 3 by pressing it against it, but it cannot restrict the movement of the pipe 2 in the longitudinal direction (X direction) when strong stress occurs in the longitudinal direction (X direction) of the pipe 2 during an earthquake. Therefore, the fixing device 4 alone cannot prevent the pipe 2 from sliding in the longitudinal direction (X direction) during an earthquake. For this reason, the pipe fixing device 1 of this embodiment is equipped with a bolt member 5.

[0028] The bolt member 5 is attached to the base 3 from the underside of the base 3 while the piping 2 is pressed and fixed to the base 3 by the fastener 4. The mounting holes 32, 32 provided in the support plate portion 3a have female threads that screw into the bolt member 5. The bolt member 5 is attached to the base 3 by screwing it into its mounting holes 32. In the example in Figure 1(b), a bolt member 5 is shown to be attached to each of the two mounting holes 32, 32 provided in the support plate portion 3a, but the number of bolt members 5 attached to the base 3 can be appropriately changed according to the bearing strength provided by the bolt members 5.

[0029] Figure 2 shows the bolt member 5. Figure 2(a) is a perspective view of the bolt member 5, and Figure 2(b) is a longitudinal cross-sectional view of the bolt member 5. The bolt member 5 has a hexagonal head 51, a male screw 52 erected from the head 51, and a projection 53 that protrudes from the tip of the male screw 52. The male screw 52 is screwed into the female screw of the mounting hole 32. The projection 53 is formed by making the tip of the male screw 52 protrude in a ring shape. Therefore, a recess is formed on the inside of the projection 53.

[0030] The bolt member 5 is attached to the mounting hole 32 of the base 3, and after the protruding portion 53 contacts the outer surface of the pipe 2, the head 51 is further tightened. As a result, the tip of the protruding portion 53 of the bolt member 5 is embedded in the outer surface of the pipe 2. In other words, the bolt member 5 is attached in a state in which its tip is embedded in the outer surface of the pipe 2, which is supported by the base 3.

[0031] Figures 3 and 4 show the pipe fixing device 1 to which the bolt member 5 is attached. Figure 3 shows a cross-sectional view of the pipe 2 from the axial direction, and Figure 4 shows a cross-sectional view of the pipe 2 from the radial direction. As described above, the mounting hole 32 is formed on a line L passing through the center of a pair of insertion holes 31, 31. Therefore, the outer surface of the pipe 2 is in contact with the support plate portion 3a along line L. The bolt member 5 is attached to the mounting hole 32 along line L. Therefore, the tip of the male screw 52 of the bolt member 5 can be brought into contact with the outer surface of the pipe 2 from the direction normal to it. After the protruding portion 53 of the bolt member 5 comes into contact with the outer surface of the pipe 2, the head 51 is further rotated and tightened to a predetermined degree, so that the protruding portion 53 is embedded in the outer surface of the pipe 2, as shown in the enlarged view A of Figure 3.

[0032] The fastener 4 presses the pipe 2 against the base 3. Therefore, when the bolt member 5 is tightened, the pipe 2 does not lift off the base 3. Consequently, when the bolt member 5 is tightened, the protrusion 53 is embedded in the outer surface of the pipe 2 in proportion to the amount of rotation of the head 51.

[0033] This pipe fixing device 1 can locally support and maintain pressure on the outer surface of the pipe 2 by embedding the tip of the bolt member 5 into the outer surface of the pipe 2. In other words, by embedding the tip of the bolt member 5 into the outer surface of the pipe 2, the pipe fixing device 1 restricts the movement of the pipe 2 in the longitudinal direction (X direction) even if strong stress occurs in the longitudinal direction (X direction) of the pipe 2 during an earthquake.

[0034] The bearing strength provided by the bolt member 5 is determined by the depth to which the protruding portion 53 is embedded in the outer surface of the pipe 2. Figure 5 illustrates the bearing strength provided by the bolt member 5. As shown in Figure 5(a), the tip of the protruding portion 53 of the bolt member 5 is embedded in the outer surface of the pipe 2. As the embedding depth H increases, the bearing strength provided by the bolt member 5 increases. Conversely, as the embedding depth H decreases, the bearing strength provided by the bolt member 5 decreases. For example, if sufficient bearing strength cannot be obtained by using only one bolt member 5, the bearing strength provided by the pipe fixing device 1 can be doubled by attaching two bolt members 5, 5 to the base 3.

[0035] Furthermore, the spacing of the bases 3 installed along the longitudinal direction of the pipe 2 can be appropriately set according to the bearing strength provided by the pipe fixing device 1. For example, if the bearing strength provided by the pipe fixing device 1 is high, the spacing D shown in Figure 5(b) can be increased. Conversely, if the bearing strength provided by the pipe fixing device 1 is low, the spacing D shown in Figure 5(b) can be shortened. Therefore, the bearing strength provided by the pipe fixing device 1 defines the maximum length of support that can be provided by one pipe fixing device 1 while restricting the movement of the pipe 2.

[0036] Figure 6 shows the relationship between the embedding depth and the supported length. The embedding depth H of the protrusion 53 is determined by the screw pitch P of the male screw 52 of the bolt member 5 (see Figure 5(a)) and the amount of rotation of the bolt member 5. The values ​​shown in Figure 6 are examples of values ​​when an M12 bolt member 5 is used. The screw pitch P of the M12 bolt member 5 is 1.75 mm. Therefore, as shown in Figure 6(a), when the bolt member 5 rotates 1 / 1 turn, the embedding depth H of the protrusion 53 becomes 1.75 mm. At this time, the bearing strength of the bolt member 5 is 14.60 kN. This bearing strength represents the force (theoretical value) required to move the ring-shaped protrusion 53 in the longitudinal direction of the pipe 2 while it is embedded in the outer surface of the pipe 2. In other words, if a stress exceeding the bearing strength is applied, the pipe 2 will move in its longitudinal direction.

[0037] When the bearing strength is 14.60kN, the length of pipe 2 that can be supported by the pipe fixing device 1 with one bolt member 5 attached is 47.5m for a 100A pipe 2, 58.7m for a 90A pipe 2, 71.5m for an 80A pipe 2, 89.6m for a 65A pipe 2, and 132.3m for a 50A pipe 2. Furthermore, if two bolt members 5 are attached, the length of pipe 2 that can be supported by the pipe fixing device 1 doubles.

[0038] Furthermore, when the bolt member 5 is rotated 1 / 3 of a turn, the embedment depth H of the protruding portion 53 becomes 0.58 mm, and the bearing strength of the bolt member 5 becomes 4.87 kN. In this case, the length of pipe 2 that can be supported by the pipe fixing device 1 with one bolt member 5 attached is 15.8 m for a 100 A pipe 2, 19.6 m for a 90 A pipe 2, 23.8 m for an 80 A pipe 2, 29.9 m for a 65 A pipe 2, and 44.1 m for a 50 A pipe 2. Note that if two bolt members 5 are attached, the length of pipe 2 that can be supported by the pipe fixing device 1 doubles.

[0039] As shown in Figure 6(a), the spacing D at which the pipe fixing devices 1 are installed can be adjusted by controlling the embedding depth H at which the tip of the bolt member 5 is embedded in the outer surface of the pipe 2.

[0040] Furthermore, as shown in Figure 6(b), when the M12 bolt member 5 is rotated 2 / 7 of a turn, the embedment depth H of the protruding portion 53 becomes 0.5 mm. At this time, the bearing strength of the bolt member 5 becomes 4.17 kN. When the bearing strength is 4.17 kN, the length of pipe 2 that can be supported by the pipe fixing device 1 with one bolt member 5 attached is 13.6 m for a 100 A pipe 2, 16.8 m for a 90 A pipe 2, 20.4 m for an 80 A pipe 2, 25.6 m for a 65 A pipe 2, and 37.8 m for a 50 A pipe 2. Note that if two bolt members 5 are attached, the length of pipe 2 that can be supported by the pipe fixing device 1 doubles.

[0041] For example, at a construction site, the installation interval D of the base 3 supporting the pipe 2 is set to 25m, and it is stipulated that the embedding depth H of the bolt member 5 be standardized to 0.5mm during construction. In such cases, as shown in Figure 6(b), when fixing 50A, 65A, and 80A pipes 2, it is sufficient to attach one bolt member 5 to the base 3. However, when fixing 90A and 100A pipes 2, as shown in Figure 6(b), one bolt member 5 is not sufficient to obtain adequate strength, so it is necessary to attach two bolt members 5, 5 to the base 3.

[0042] In other words, the pipe fixing device 1 of this embodiment can adjust the bearing strength provided by the bolt member 5 by controlling the embedding depth H to which the tip of the bolt member 5 is embedded in the outer surface of the pipe 2. Therefore, it is possible to support the pipe 2 with the optimal bearing strength according to the type of pipe 2 and the installation site of the pipe 2, which has the advantage of making construction management easier.

[0043] (Second Embodiment) Next, a second embodiment of the present invention will be described. Figure 7 is a perspective view showing the pipe fixing device 1 in the second embodiment of the present invention. However, Figure 7 shows the state before the assembly of each component of the pipe fixing device 1.

[0044] The pipe fixing device 1 of this embodiment includes a holding member 6 in addition to the configuration described in the first embodiment. The holding member 6 is installed on the base 3 and is a member that holds the outer surface of the pipe 2. Furthermore, the base 3 of this embodiment does not have female threads formed in the mounting holes 32, 32. That is, the diameter of the mounting holes 32, 32 is formed to be larger than the outer diameter of the bolt member 5 and penetrates the support plate portion 3a vertically. The positions in which the mounting holes 32, 32 are formed are the same as in the first embodiment.

[0045] Figure 8 is an enlarged view of the retaining member 6. Figure 8(a) is a perspective view of the retaining member 6, and Figure 8(b) is a cross-sectional view of the retaining member 6. The retaining member 6 has a flat bottom surface 62 and an upper surface 63 that holds the pipe 2. The bottom surface 62 is placed on the upper surface of the base 3. The upper surface 63 of the retaining member 6 has a concave shape. This concave shape is formed with a diameter equal to the outer diameter of the pipe 2. Therefore, the upper surface 63 of the retaining member 6 conforms to the outer surface of the pipe 2 and holds the pipe 2.

[0046] As shown in Figure 8(a), the retaining member 6 has vertically penetrating screw holes 61, 61 at the lowest position of its concave shape. These screw holes 61, 61 are formed in positions that match the mounting holes 32, 32 formed in the base 3. Furthermore, the screw holes 61, 61 are formed as female threads that screw into the male threads 52 of the bolt member 5.

[0047] As shown in Figure 7, the retaining member 6 is installed on the base 3 with its screw holes 61, 61 aligned with the mounting holes 32, 32. After the piping 2 is placed on the upper surface 63 of the retaining member 6, the U-shaped fixing device 4 is fixed to the base 3. This fixes the piping 2 in a state of being pressed against the base 3 by the fixing device 4.

[0048] Once the pipe 2 is fixed to the base 3 by the fastener 4, the bolt member 5 is attached to the mounting holes 32, 32 from the underside of the base 3. As described above, the mounting holes 32, 32 do not have internal threads. Therefore, the bolt member 5 passes through the mounting holes 32, 32 and is screwed into the threaded holes 61, 61 of the retaining member 6. After the tip of the protruding portion 53 of the bolt member 5 contacts the outer surface of the pipe 2, the bolt member 5 is further tightened, causing the tip of the protruding portion 53 of the bolt member 5 to be embedded in the outer surface of the pipe 2.

[0049] Figure 9 shows a pipe fixing device 1 with a bolt member 5 attached. In this embodiment, the pipe fixing device 1 has a bolt member 5 inserted into a mounting hole 32 in the base 3, which is then screwed into a threaded hole 61 formed in the holding member 6, causing the tip of the bolt member 5 to be embedded in the outer surface of the pipe 2. Therefore, even if the mounting hole 32 formed in the base 3 is misaligned in the Y direction of the base 3, the tip of the protruding portion 53 of the bolt member 5 can be embedded from the normal direction to the lowest position on the outer surface of the pipe 2.

[0050] In the pipe fixing device 1 of the first embodiment, since a female screw is formed in the mounting hole 32, if the mounting hole 32 is misaligned in the Y direction, the protruding portion 53 of the bolt member 5 cannot be embedded in the outer surface of the pipe 2 from the direction normal to the outer surface. Therefore, if misalignment occurs, the pipe fixing device 1 of the first embodiment cannot form a ring-shaped embedding mark on the outer surface of the pipe 2. In that case, the bearing strength by the bolt member 5 may deviate from the theoretical value described above, and the pipe 2 may not be able to be fixed with sufficient bearing strength.

[0051] In contrast, the pipe fixing device 1 of this embodiment holds the outer surface of the pipe 2 with a holding member 6, and the bolt member 5 is screwed into the screw hole 61 of the holding member 6. Therefore, even if the mounting hole 32 of the base 3 is misaligned in the Y direction, the bolt member 5 can embed its protruding portion 53 into the outer surface of the pipe 2 from the direction normal to it. Thus, even if the mounting hole 32 is misaligned, the pipe fixing device 1 of this embodiment can form a ring-shaped embedding mark on the outer surface of the pipe. Consequently, the bearing strength by the bolt member 5 can be calculated as the theoretical value described above, and construction defects can be eliminated.

[0052] Figure 10 shows a modified example of the retaining member 6. The retaining member 6 shown in Figure 10 has wall portions 64, 64 that are joined to both end faces in the width direction (X direction) of the base 3. By arranging the retaining member 6 so as to join these wall portions 64, 64 to the end faces of the base 3, the X-direction positioning on the base 3 can be easily performed. Therefore, when the retaining member 6 is installed on the base 3, it is possible to prevent the position of the screw holes 61 from shifting in the X direction relative to the mounting holes 32. In addition, the wall portions 64, 64 prevent the retaining member 6 from shifting in the X direction when the pipe 2 is placed on the upper surface of the retaining member 6. Therefore, after the pipe 2 is installed on the retaining member 6, it is possible to prevent the position of the screw holes 61 from shifting in the X direction relative to the mounting holes 32, and the bolt member 5 can be embedded in the outer surface of the pipe 2 through the mounting holes 32 of the base 3.

[0053] Figure 11 shows another modified example of the retaining member 6. The retaining member 6 shown in Figure 11(a) does not have a concave upper surface 63, and has retaining portions 65, 65 of uniform height on both sides of the retaining member 6. These pair of retaining portions 65, 65 are formed at positions that are equal distances from the screw holes 61, 61. The pipe 2 is installed with its outer surface joined to these pair of retaining portions 65, 65. Therefore, when the pipe 2 is installed on the upper surface 63 of the retaining member 6 shown in Figure 11(a), the tip of the bolt member 5 can be properly embedded in the outer surface of the pipe 2.

[0054] The retaining member 6 shown in Figure 11(b) has a configuration in which wall portions 64, 64 are provided in addition to the retaining member 6 shown in Figure 11(a). The wall portions 64, 64 are joined to both end faces in the width direction (X direction) of the base 3. Therefore, when the retaining member 6 is installed on the base 3, it is possible to prevent the position of the screw hole 61 from shifting in the X direction relative to the mounting hole 32.

[0055] In this embodiment, the configuration and operation other than those described above are the same as those described in the first embodiment.

[0056] (modified version) Several preferred embodiments of the present invention have been described above. However, the present invention is not limited to those described in the above embodiments. That is, the present invention includes various modifications to those described in the above embodiments.

[0057] For example, in the above embodiment, a form in which the protruding portion 53 of the bolt member 5 protrudes in a ring shape was illustrated. However, the tip of the bolt member 5 is not necessarily limited to a ring-shaped protrusion. Figure 12 shows a bolt member 5 having a protruding portion 53 with a conical tip. Even when the protruding portion 53 protrudes in a conical shape as shown in Figure 12, the bolt member 5 can have the tip of the protruding portion 53 embedded in the outer surface of the pipe 2. Then, the bearing strength of the bolt member 5 can be adjusted according to the embedding depth H of the protruding portion 53. Therefore, the bolt member 5 provided in the pipe fixing device 1 may have a configuration as shown in Figure 12. However, the bearing strength of the bolt member 5 shown in Figure 12 is lower than the bearing strength of the bolt member 5 shown in Figure 2. For this reason, when it is necessary to restrict the movement of the pipe 2 with a small number of bolt members 5, it is preferable to use the bolt member 5 shown in Figure 2. [Explanation of Symbols]

[0058] 1...Pipe fixing device, 2...Pipe, 3...Base, 4...Fixing device, 5...Bolt member, 6...Retaining member, 31...Through hole, 32...Mounting hole, 42...Male screw, 52...Male screw, 61...Screw hole.

Claims

1. A pipe fixing device for fixing pipes, A base supporting the aforementioned piping, A U-shaped fixing device for fixing the piping to the base while pressing it down, A bolt member is attached to the base from the lower side of the base and has its tip embedded in the outer surface of the pipe supported by the base, A holding member is placed on the base and holds the outer surface of the piping, Equipped with, The base has a mounting hole for inserting the bolt member, The pipe fixing device is characterized in that the retaining member has a screw hole that engages with the male thread of the bolt member inserted through the mounting hole.

2. The aforementioned fastener has male screws formed on both sides of its U-shape. The base has a pair of insertion holes on both sides of the pipe in the diametrical direction through which the male screw is inserted. The pipe fixing device according to claim 1, characterized in that the mounting holes are formed on a line that passes through the centers of the pair of insertion holes and is parallel to the axial direction of the pipe.

3. The pipe fixing device according to claim 1 or 2, characterized in that the diameter of the mounting hole is larger than the outer diameter of the bolt member.

4. The pipe fixing device according to claim 1 or 2, characterized in that the upper surface of the retaining member has a concave shape that conforms to the outer surface of the pipe.

5. The pipe fixing device according to claim 1 or 2, characterized in that the bolt member has a protruding portion with a ring-shaped tip, and the protruding portion is embedded in the outer surface of the pipe.

Images