JP7351879B2 - Piping corrosion prevention components and piping corrosion prevention structures - Google Patents

Description

The present invention relates to a pipe corrosion prevention member and a pipe corrosion prevention structure.

Patent Document 1 describes an example of a fastener structure for a pipe as follows: ``A support member is fixed to a structure along which the pipe is placed in close proximity to the pipe, a U-shaped bolt is placed over the pipe, and a threaded portion of the U-shaped bolt is fixed. In the pipe fastening structure for restraining the movement of the pipe in the radial direction by fixing it to the support member, a restraining auxiliary plate having a protrusion on one surface is arranged such that the protrusion is on the pipe side. installed between the piping and the support member, and tightening a nut with the support member and the restraint auxiliary plate sandwiched between the threaded portion of the U-shaped bolt, and the U-shaped bolt and the protrusion of the restraint auxiliary plate. "A fastener structure (abstract excerpt)" in which the movement of the pipe in the radial direction is restrained by the following is disclosed. In this Patent Document 1, a measure against corrosion of the piping is taken by lifting and supporting the piping from the support member using the protrusion.

JP 2014-9713 Publication

When installing the restraint auxiliary plate of Patent Document 1, "install the restraint auxiliary plate between the support member and the piping with the protruding part on the piping side. Place the U-shaped bolt on the piping, and Attach the adjustment nut to the auxiliary restraint plate, pass it through the assembly hole of the restraint auxiliary plate and the assembly hole of the support member, and then install the fixing nut.In other words, insert the nut onto the threaded portion of the U-shaped bolt, sandwiching the support member and the auxiliary restraint plate. (see Patent Document 1, paragraph 0034), the U-shaped bolt and the restraint auxiliary plate are simultaneously fixed in a state where the U-shaped bolt is removed from the support member.

Therefore, if you want to install a restraint support plate later on when the U-shaped bolt has already been placed over the pipe and fastened, first remove the U-shaped bolt completely from the support member, and then place the restraint support plate between the pipe and the support member. It is necessary to insert the plate, then pass the U-shaped bolt through the attachment hole of the restraint auxiliary plate and the attachment hole of the support member, and attach the fixing nut, so the installation work cannot be said to be easy.

The present invention was made in view of the above circumstances, and its purpose is to provide a pipe corrosion prevention unit that can be easily attached later to pipes that have already been attached to a frame using U-shaped bolts. Our objective is to provide a structure that prevents corrosion of materials and piping.

In order to achieve the above object, the present invention has the configuration described in the claims. To give one example, the present invention provides a pipe corrosion prevention member comprising a pipe corrosion prevention plate and a fall prevention plate formed separately from the piping corrosion prevention plate, the pipe corrosion prevention member comprising: a pipe corrosion prevention plate ; The plate includes a first substrate formed of a rectangular plate-like member, and the first substrate has a first notch portion and a second notch portion formed by cutting out the outer periphery of the first substrate, A first protrusion that protrudes upward from the top surface of the first substrate is formed between the first notch and the second notch in the first substrate, and the first protrusion in the first substrate A second protrusion protruding in the same direction as the protrusion direction of the first protrusion is formed in a partial area including the notch or a partial area including the second notch on the first substrate, The drop-off prevention plate includes a second substrate formed of a rectangular plate-like member, and the second substrate includes a protrusion piece that protrudes along one side of the second substrate, and the second substrate includes a protruding piece that protrudes along one side of the second substrate. A third cutout is formed on the other side perpendicular to one side, and the height at which the second protrusion protrudes from the first substrate is determined by the height of the second protrusion from the second substrate. It is characterized by being equivalent to the thickness .

According to the present invention, it is possible to provide a pipe corrosion prevention member and a pipe corrosion prevention structure that can be easily attached later to a pipe that has already been attached to a support member with a U-shaped bolt. Note that problems, configurations, and effects other than those described above will be made clear by the description of the embodiments below.

FIG. 1 is a side view showing a pipe corrosion prevention structure according to the first embodiment. AA arrow view in FIG. 1. FIG. 2 is an explanatory diagram of a pipe corrosion prevention member according to the first embodiment. FIG. 7 is a side view showing a pipe corrosion prevention structure according to a second embodiment. FIG. 7 is an explanatory diagram of a pipe corrosion prevention member according to a second embodiment. An explanatory diagram of a method of attaching a pipe corrosion prevention member. An explanatory diagram of a method of attaching a pipe corrosion prevention member. An explanatory diagram of a method of attaching a pipe corrosion prevention member.

Hereinafter, a pipe corrosion prevention plate, a pipe corrosion prevention member, and a pipe corrosion prevention structure according to embodiments of the present invention will be described with reference to the drawings. The same components are denoted by the same reference numerals throughout the figures, and redundant explanation will be omitted.

<First embodiment>
A pipe corrosion prevention structure according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a side view showing a pipe corrosion prevention structure according to a first embodiment. FIG. 2 is a view taken along the line AA in FIG. FIG. 3 is an explanatory diagram of the pipe corrosion prevention member according to the first embodiment.

As shown in FIG. 1, the pipe corrosion prevention structure 1 for piping according to the first embodiment includes a pedestal 3 installed close to the piping 2, and a U-shaped structure fixed to the pedestal 3 over the piping 2. It is configured to include a bolt 4, a pipe corrosion prevention plate 5 installed between the pedestal 3 and the pipe 2, and a drop-off prevention plate 6 that prevents the pipe corrosion prevention plate 5 from falling off. The pipe corrosion prevention plate 5 and the fall prevention plate 6 are collectively referred to as a pipe corrosion prevention member.

The frame 3 is made of shaped steel, and has a mounting hole 31 (see FIG. 6) formed therein for mounting a U-shaped bolt 4 thereon. One end of the frame 3 is fixed to a nearby wall (not shown) (a structure along which the pipe 2 is placed) by welding, bolts, or the like.

The U-shaped bolt 4 includes a bolt curved portion 41 that curves into a U-shape along the outer surface of the pipe 2, and a pair of bolt leg portions that are continuously formed at each end of the bolt curved portion 41. The pair of bolt legs includes a first bolt leg 421 and a second bolt leg 422.

Thread grooves 4211 and 4221 (see FIG. 6) are formed in each open end portion (end portion on the opposite side of the bolt curved portion 41) of the first bolt leg portion 421 and the second bolt leg portion 422.

The U-shaped bolt 4 is fixed to the frame 3 by a triple nut 70 and a fixing nut 71.

As shown in FIG. 3, the pipe corrosion prevention plate 5 includes a first substrate 51 made of a substantially rectangular metal plate member, and a first protrusion 52 formed on the upper surface of the first substrate 51. The first protruding portion 52 supports the piping 2 by coming into contact with the lower part of the outer circumferential surface of the piping 2 .

The first board 51 has a first notch 541 in which one short side (first side) is cut out in order to insert each of the first bolt leg 421 and the second bolt leg 422, and a first notch 541 in which one short side (first side) is cut out. A second notch portion 542 is formed by cutting out the long side (second side). The notch shapes of the first notch portion 541 and the second notch portion 542 are formed to be larger than the outer circumferential diameters of the first bolt leg portion 421 and the second bolt leg portion 422. The length between the center part of the first notch part 541 and the center part of the second notch part 542 corresponds to the distance between the first bolt leg part 421 and the second bolt leg part 422.

The first protruding portion 52 supports the lower part of the pipe 2 in a state floating from the first substrate 51 in a state where the pipe corrosion prevention plate 5 is attached between the pipe 2 and the pedestal 3 (see FIG. 2). In this embodiment, the first protrusion 52 is formed by welding a cylindrical steel material to the first substrate 51.

The cylindrical steel material is welded to the first substrate 51 in a direction substantially perpendicular to the axial direction of the piping 2 in a state where the first substrate 51 is attached between the piping 2 and the frame 3. In other words, the cylindrical steel material is welded to the first substrate 51 in a direction in which the axial direction of the cylindrical steel material matches the direction in which the first notch portion 541 and the second notch portion 542 are lined up. Thereby, the contact area between the piping 2 and the cylindrical steel material can be reduced compared to the case where the axial direction of the piping 2 and the axial direction of the cylindrical steel material are matched. As a result, when the piping 2 is placed outdoors, rainwater is less likely to accumulate between the piping 2 and the cylindrical steel material, improving the rust prevention properties of the piping 2, and reducing the gap between the piping 2 and the U-shaped bolt 4. Can be adjusted.

The first protrusion 52 may be formed by pressing the first substrate 51 instead of welding a cylindrical steel material.

The first substrate 51 has a second protrusion in which a partial region including the opening of the second notch 542 protrudes in the same direction as the protrusion direction of the first protrusion 52 and lower than the first protrusion 52. 55 is formed. The height of the second protrusion 55 is equivalent to the thickness of the second substrate 61 of the drop-off prevention plate 6. A drop-off prevention plate 6 is inserted between the second protrusion 55 and the pedestal 3. The insertion method will be described later.

In the drop-off prevention plate 6, a third notch 64 and a protruding piece 66 are formed in the second substrate 61.

The second substrate 61 is formed of a substantially rectangular metal plate member with one side having the same length as the short side of the first substrate 51 .

The third notch 64 allows the second bolt leg 422 to be inserted into the side of the second board 61 that is the same length as the short side of the first board 51 (corresponding to the long side of the second board 61). It is formed as a notch for.

The protruding piece 66 is formed as a protruding piece that protrudes along the other long side (fourth side) of the second substrate 61 to be higher than the height of the second protruding portion 55 of the first substrate 51 .

To attach the pipe corrosion prevention plate 5 to the pipe 2 attached to the frame 3 with the U-shaped bolt 4, insert the first notch 541 of the first board 51 into the first bolt leg 421, and The pipe corrosion prevention plate 5 is inserted under the pipe 2 while being rotated about the portion 541. The pipe corrosion prevention plate 5 rotates until the second bolt leg 422 is inserted into the second notch 542. Then, the second substrate 61 of the fall prevention plate 6 is inserted between the pipe corrosion prevention plate 5 and the pedestal 3 until the third notch 64 interferes with the second bolt leg 422. The protruding piece 66 of the second substrate 61 is made to face the thickness surface (side surface) of the first substrate 51 .

The movement of the fall prevention plate 6 in the width direction is restricted by the second protrusion 55 .

On the other hand, movement of the pipe corrosion prevention plate 5 in the vertical direction (in the pipe axial direction) is restrained by the protruding piece 66 of the fall prevention plate 6.

Further, movement of the pipe corrosion prevention plate 5 in the width direction is restricted by interference between the second notch portion 542 and the second bolt leg portion 422. This prevents the pipe corrosion prevention plate 5 and fall prevention plate 6 from falling off.

<Second embodiment>
A pipe corrosion prevention structure according to a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. FIG. 4 is a side view showing a pipe corrosion prevention structure according to the second embodiment. FIG. 5 is an explanatory diagram of a pipe corrosion prevention member according to the second embodiment.

As shown in FIG. 4, the pipe corrosion prevention plate 5a according to the second embodiment is inserted between the pedestal 3 and the pipe 2, similarly to the first embodiment. Further, a drop-off prevention plate 6a is inserted between the piping corrosion prevention plate 5a, the pedestal 3, and the piping corrosion prevention plate 5a. The difference from the first embodiment lies in the interlocking shape of the pipe corrosion prevention plate 5a and the fall prevention plate 6a.

As shown in FIG. 5, the pipe corrosion prevention plate 5a includes a substantially rectangular first substrate 51a and a first protrusion 52a formed on the upper surface of the first substrate 51a.

The first board 51a has a first notch 541a in which one short side (first side) is cut out in order to insert the first bolt leg 421 and second bolt leg 422, and one long side ( A second cutout portion 542 is formed by cutting out the second side. The notch shapes of the first notch portion 541a and the second notch portion 542a are formed to be larger than the outer circumferential diameters of the first bolt leg portion 421 and the second bolt leg portion 422. The center portion of the first notch portion 541a and the center portion and length of the second notch portion 542a correspond to the distance between the first bolt leg portion 421 and the second bolt leg portion 422.

The first protruding portion 52a is formed by protruding the center portion of the first substrate 51 by press working.

The first substrate 51 has a second protrusion 55a formed by raising the portion where the second notch 542 is formed. The height of the second protrusion 55a is equivalent to the thickness of the drop-off prevention plate 6a.

In the first substrate 51, the vicinity of the other short side (third side) is measured from the height of the second protrusion 55a to the reference height (second side) of the first substrate 51a from the vertical center toward the second side. It has an inclined surface 56 that returns to the height of the upper surface other than the protruding portion 55a, and an inset portion 57 that is continuous from the bottom of the inclined surface 56 and has an upper surface that is at the reference height of the first substrate 51a.

The drop-off prevention plate 6a has a third notch 64a and a protruding piece 66a formed in the second substrate 61a. Furthermore, in the fall prevention plate 6a, a substantially rectangular locking notch is provided at a position corresponding to the fitting portion 57 of the pipe corrosion prevention plate 5a when inserted between the pipe corrosion prevention plate 5a and the pedestal 3. 67 is formed.

While the fall prevention plate 6a is inserted into the second protrusion 55a of the pipe corrosion prevention plate 5a, the fitting part 57 of the pipe corrosion prevention plate 5a is fitted into the locking notch 67 of the fall prevention plate 6a (Fig. 5 (c)), while the fall prevention plate 6a prevents the pipe corrosion prevention plate 5a from falling off in the pipe axial direction (vertical direction) and width direction (horizontal direction), the pipe corrosion prevention plate 5a and the fall prevention plate 6a mutually The piping corrosion prevention plate 5a can be kept under the piping 2 by restricting its movement.

<How to install the pipe corrosion prevention plate 5>
A method of attaching the pipe corrosion prevention member will be described with reference to FIGS. 6 to 8. Below, a pipe corrosion prevention member using the pipe corrosion prevention plate 5 according to the first embodiment will be described as an example. FIGS. 6 to 8 are explanatory diagrams of a method of attaching a pipe corrosion prevention member. The following installation method starts with the pipe 2 already fastened to the pedestal 3 with the U-shaped bolt 4.

(Step 1)
First, as shown in FIG. 6(a), fixing nuts 71, 71 are fitted into thread grooves 4211, 4221 of the first bolt leg 421 and second bolt leg 422 of the U-shaped bolt 4, respectively. Loosen the U-shaped bolt 4 to the piping 2. However, it is not necessary to completely remove the U-shaped bolt 4 from the frame 3. Then, the pipe 2 is lifted within the bolt curved part 41 of the U-shaped bolt 4 to create a gap between the frame 3 and the pipe 2.

(Step 2)
Next, as shown in FIG. 6(b), the first bolt leg 421 is inserted into the first notch 541. Then, the pipe corrosion prevention plate 5 is inserted under the pipe 2 while rotating with the first notch 541 as the center of rotation. The pipe corrosion prevention plate 5 rotates until the second bolt leg 422 is inserted into the second notch 542a.

(Step 3)
FIG. 7A shows a state in which the pipe corrosion prevention plate 5 is inserted under the pipe 2.

(Step 4)
Subsequently, as shown in FIG. 7B, the second notch 542 side of the pipe corrosion prevention plate 5 is lifted, and the second board 61 is inserted between the pipe corrosion prevention plate 5 and the pedestal 3. At that time, the third notch 64 is positioned so as to open in the width direction of the pipe corrosion prevention plate 5, and the second bolt leg 422 is inserted into the third notch 64.

(Step 5)
Then, as shown in FIG. 8(a), the piping corrosion prevention plate 5 is placed on the second substrate 61 with the protruding piece 66 of the fall prevention plate 6 facing the thickness surface (side surface) of the piping corrosion prevention plate 5. Cover.

(Step 6)
Then, as shown in FIG. 8(b), the fall prevention plate 6 is fitted under the second protrusion 55 of the pipe corrosion prevention plate 5, so that the pipe corrosion prevention plate 5 is not lifted up by the fall prevention plate 6. A pipe corrosion prevention plate 5 can be inserted between the pedestal 3 and the pipe 2. Then, the first protruding portion 52 of the pipe corrosion prevention plate 5 comes into contact with the lower part of the pipe 2 to lift and support the pipe 2 from the pedestal 3. Thereafter, the triple nuts 70 and 70 are fitted into the respective thread grooves 4211 and 4221 of the first bolt leg portion 421 and the second bolt leg portion 422, respectively. Furthermore, fixing nuts 71, 71 are fitted to prevent the triple nuts 70, 70 from loosening.

The piping corrosion prevention plate 5a and the falling-off prevention plate 6a according to the second embodiment can also be attached by (step 1) to (step 6). At this time, it differs from the first embodiment in that the fitting part 57 of the pipe corrosion prevention plate 5a and the protruding piece 66 of the fall prevention plate 6a engage, but the fall prevention plate 6a further prevents the pipe corrosion prevention plate 5a from falling off. do.

According to this embodiment, after the piping 2 has already been attached to the pedestal 3 with the U-shaped bolt 4, the piping corrosion prevention plate 5 having a protrusion is inserted between the piping 2 and the pedestal 3, and the piping 2 is It is possible to direct the piping 2 by reducing the contact area between it and the pedestal 3.

This prevents rainwater from accumulating between the piping 2 and the frame 3 and causing corrosion or rust after the piping 2 is installed.

The above embodiments are not intended to limit the present invention, and various modifications that do not depart from the spirit of the present invention are included in the present invention. For example, the sides on which the first notch and the second notch are provided may be changed as appropriate. Furthermore, the pipe corrosion prevention plate and the substrate are not limited to a substantially rectangular shape.

1: Piping corrosion prevention structure 2: Piping 3: Frame 4: U-shaped bolt 5: Piping corrosion prevention plate 5a: Piping corrosion prevention plate 6: Falling prevention plate 6a: Falling prevention plate 31: Mounting hole 41: Bolt curved part 51: First substrate 51a: First substrate 52: First protrusion 52a: First protrusion 55: Second protrusion 55a: Second protrusion 56: Inclined surface 57: Fitting portion 61: Second substrate 61a: Second substrate 64: Third notch 64a: Third notch 66: Projecting piece 66a: Projecting piece 67: Locking notch 70: Triple nut 71: Fixing nut 421: First bolt leg 422: No. 2-bolt leg portion 541: First notch 541a: First notch 542: Second notch 542a: Second notch 4211: Thread groove 4221: Thread groove

Claims (5)

Piping corrosion prevention plate ,
a fall prevention plate formed separately from the piping corrosion prevention plate;
A piping corrosion prevention member comprising :
The pipe corrosion prevention plate includes a first substrate formed of a rectangular plate member,
The first substrate has a first notch and a second notch formed in the outer periphery of the first substrate,
A first protrusion that protrudes upward from the top surface of the first substrate is formed between the first notch and the second notch in the first substrate ,
A partial region of the first substrate including the first notch portion or a partial region of the first substrate including the second notch portion is provided with a portion protruding in the same direction as the protruding direction of the first protruding portion. a second protrusion is formed;
The drop-off prevention plate includes a second substrate formed of a rectangular plate-like member,
The second board includes a protrusion piece that protrudes along one side of the second board,
A third notch portion is formed on the other side of the second substrate perpendicular to the one side, and the third notch portion is formed by cutting out the other side;
A piping corrosion prevention member characterized in that a height at which the second protrusion protrudes from the first substrate is equivalent to a thickness of the second substrate . In the piping corrosion prevention member according to claim 1,
The first notch is formed by cutting out one short side of the first substrate,
The second notch is formed by cutting out the other short side of the first substrate.
A piping corrosion prevention member characterized by: In the piping corrosion prevention member according to claim 1,
The pipe corrosion prevention member , wherein the second protrusion protrudes lower than the first protrusion . piping attached to the pedestal by U-shaped bolts and nuts that fit together with the pedestal in between, the pedestal, and a piping corrosion prevention plate disposed between the piping and the pedestal ;
a fall prevention plate formed separately from the piping corrosion prevention plate;
A piping corrosion prevention structure comprising:
The U-shaped bolt is
a bolt curved portion curved in a U-shape along the outer surface of the pipe;
A first bolt leg and a second bolt leg, which are a pair of bolt legs continuously formed at each end of the bolt curved part,
The pipe corrosion prevention plate is
comprising a first substrate formed of a rectangular plate-like member,
The first substrate has a first notch and a second notch formed in the outer periphery of the first substrate,
A first protrusion that protrudes upward from the top surface of the first substrate is formed between the first notch and the second notch in the first substrate.
the first bolt leg is inserted into the first notch, the second bolt leg is inserted into the second notch,
the first protrusion abuts on the outer circumferential surface of the pipe;
A partial area including the first notch in the first substrate or a partial area including the second notch in the piping corrosion prevention plate is provided with a portion that protrudes in the same direction as the protruding direction of the first protrusion. a second protrusion is formed;
The drop-off prevention plate includes a second substrate formed of a rectangular plate-like member,
The second board includes a protrusion piece that protrudes along one side of the second board,
A third notch portion is formed on the other side of the second substrate perpendicular to the one side, and the third notch portion is formed by cutting out the other side;
The height at which the second protrusion protrudes from the first substrate is equivalent to the thickness of the second substrate,
The second board is inserted between the second protrusion and the pedestal, and the second bolt leg is also inserted into the third notch,
the protruding piece faces a thickness surface of the first substrate ;
Piping corrosion prevention structure characterized by: In the pipe corrosion prevention structure according to claim 4,
The structure for preventing corrosion of pipes , wherein the second protrusion protrudes lower than the first protrusion .

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