JP6085528B2 - Metal pipe protective cover and metal pipe startup piping structure - Google Patents

Description

  The present invention relates to a protective cover for protecting a metal pipe standing on the ground, and a startup pipe structure for the metal pipe.

  Conventionally, for example, in order to protect a column as a metal pipe installed along a road from corrosion due to a snow melting agent or the like, a sprayed resin coating is sometimes formed on the column surface by a resin spraying method (patent) Reference 1). Moreover, while covering this support | pillar with a cylindrical cover, the support | pillar was protected by filling a rust preventive agent between a support | pillar and a cover, and covering the upper part with a sealing material. (See Patent Document 2).

JP 2010-65509 A JP 2001-73326 A

  However, in the conventional method of forming a sprayed resin film on the surface of a support column as a metal pipe, if the film is broken, there is a possibility that corrosion proceeds from the broken part. In addition, in the method of covering a column with a cylindrical cover and filling a rust preventive agent between them or covering the upper part with a sealing material, the work is very troublesome and improvement is desired. It was.

  The present invention has been made in order to solve the above-described conventional drawbacks, and an object of the present invention is to provide a metal tube protective cover capable of accurately and easily protecting a metal tube, and a metal It is to provide a start-up piping structure for pipe making.

In order to achieve the above object, the metal pipe protective cover and the metal pipe start-up piping structure according to the present invention have the following configuration. That is,
The metal pipe protective cover according to the first aspect of the present invention is a protective cover for protecting a metal pipe that is piped up from the ground to the ground. The protective cover includes a cylindrical cover body, an annular or cylindrical waterstop body, and a cap nut. Here, the cover body is made of a corrosion-resistant material, and is fitted on the outer peripheral side of the metal pipe so as to cover a portion of the metal pipe from the ground to the ground. The waterstop is made of rubber and is provided at the upper end portion of the cover body, and is fitted to the outer peripheral side of the metal pipe together with the cover body. The cap nut is fitted on the outer peripheral side of the water stop body, and is screwed into a screw portion provided on a protective cover body including the cover body and the water stop body. Therefore, the screw portion is provided on the outer peripheral surface of the water stop body, and the cap nut is screwed into the screw portion so that the water stop body is pressed against the cap nut and is in close contact with the metal pipe, Water is stopped between the metal pipe and the cover body.

According to this protective cover, the protective cover body in which the waterstop is provided at the upper end of the cover body is fitted on the outer peripheral side of the metal pipe so that the cover body covers the portion of the metal pipe from the ground to the ground. . Then, the cap nut is fitted on the outer peripheral side of the water stop body and screwed into the threaded portion of the water stop body , so that the water stop body is pressed against the cap nut and closely contacts the metal pipe, and the metal pipe and the cover body The water stops. That is, between the metal pipe and the cover body at the upper end portion of the cover body exposed to the ground is stopped by the rubber water stop body, and the metal pipe is accurately protected. And when installing this protective cover, a protective cover main body should just be fitted in the outer peripheral side of a metal pipe, and a cap nut may be screwed in a water stop body , and this metal pipe can be protected easily. In addition, by providing the threaded portion on the outer peripheral surface of the water-stopper made of rubber, the threaded portion and the cap nut are firmly adhered, and the cap nut is not loosened carelessly.

In addition, the metal pipe rising pipe structure according to the invention of claim 2 includes a metal pipe that is piped up from the ground to the ground, a cylindrical cover body, and an annular or cylindrical waterstop body. And a cap nut. Here, the cover body is made of a corrosion-resistant material, and is fitted on the outer peripheral side of the metal pipe so as to cover a portion of the metal pipe from the ground to the ground. The waterstop is made of rubber and is provided at the upper end of the cover body. The waterstop is fitted on the outer peripheral side of the metal pipe together with the cover body. The cap nut is fitted on the outer peripheral side of the water stop body and is screwed into a screw portion provided in a protective cover body including the cover body and the water stop body. Therefore, the screw portion is provided on the outer peripheral surface of the water stop body, and the cap nut is screwed into the screw portion so that the water stop body is pressed against the cap nut and is in close contact with the metal pipe, Water is stopped between the metal pipe and the waterstop.

According to this start-up piping structure, the protective cover body provided with a waterstop at the upper end of the cover body is placed on the outer circumference side of the metal pipe so that the cover body covers the portion of the metal pipe from the ground to the ground. Fitted. Then, the cap nut is fitted on the outer peripheral side of the water stop body and screwed into the threaded portion of the water stop body , so that the water stop body is pressed against the cap nut and closely contacts the metal pipe, and the metal pipe and the cover body The water stops. That is, between the metal pipe and the cover body at the upper end portion of the cover body exposed to the ground is stopped by the rubber water stop body, and the metal pipe is accurately protected. And when installing this protective cover, a protective cover main body should just be fitted in the outer peripheral side of a metal pipe, and a cap nut may be screwed in a water stop body , and this metal pipe can be protected easily. In addition, by providing the threaded portion on the outer peripheral surface of the water-stopper made of rubber, the threaded portion and the cap nut are firmly adhered, and the cap nut is not loosened carelessly.

  According to the metal pipe protective cover and the metal pipe start-up piping structure according to the present invention, the cover body covers the portion of the metal pipe from the ground to the ground, and the waterstop and the cap nut By stopping the upper end of the cover body, the metal pipe can be accurately and easily protected.

It is a front view of one embodiment of this invention. Similarly, it is a principal part enlarged view in FIG. Similarly, it is an enlarged front view of a protection bar.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the protection cover of a metal pipe concerning this invention and the starting piping structure of a metal pipe is demonstrated based on drawing.

  1 to 3 show an embodiment of the present invention. In the figure, reference numeral 1a indicates the ground and 1b indicates the ground. Reference numeral 2 denotes a metal pipe that is piped up from the ground 1a to the ground 1b. Reference numeral 3 denotes a protective cover for protecting the metal pipe 2. Reference numeral 4 denotes a rising pipe structure of the metal pipe 2.

  The protective cover 3 includes a cylindrical cover body 5, an annular or cylindrical waterstop body 6, and a cap nut 7. Here, the cover body 5 is made of a corrosion-resistant material, and is fitted on the outer peripheral side of the metal pipe 2 so as to cover a portion of the metal pipe 2 from the underground 1a to the ground 1b. The water stop body 6 is made of rubber and is provided on the upper end portion 5 a of the cover body 5, and is fitted to the outer peripheral side of the metal pipe 2 together with the cover body 5. The protective cover main body X including the cover body 5 and the water stop body 6 is provided with a screw portion X1, and the cap nut 7 is fitted on the outer peripheral side of the water stop body 6 and screwed into the screw portion X1. Therefore, when the cap nut 7 is screwed into the screw portion X1, the water stop body 6 is pressed against the cap nut 7 and is brought into close contact with the metal pipe 2, so that the water between the metal pipe 2 and the cover body 5 is stopped. The

  In the start-up piping structure 4, a metal pipe 2 that is set up from the underground 1 a to the ground 1 b, a cylindrical cover body 5, an annular or cylindrical waterstop body 6, a cap nut 7, Is provided. Here, the cover body 5 is made of a corrosion-resistant material, and is fitted on the outer peripheral side of the metal pipe 2 so as to cover a portion of the metal pipe 2 from the underground 1a to the ground 1b. The water stop body 6 is made of rubber, is provided at the upper end portion 5 a of the cover body 5, and is fitted on the outer peripheral side of the metal pipe 2 together with the cover body 5. And the screw part X1 is provided in the protective cover main body X provided with the cover body 5 and the water stop body 6, and the cap nut 7 is fitted by the outer peripheral side of the water stop body 6, and is screwed in the screw part X1. . Therefore, when the cap nut 7 is screwed into the screw portion X1, the water stop body 6 is pressed against the cap nut 7 and is brought into close contact with the metal pipe 2, so that the water between the metal pipe 2 and the cover body 5 is stopped. ing.

  Specifically, the metal pipe 2 is an electric wire protection pipe (electric wire pipe), and is made of, for example, a steel pipe (lining steel pipe) covered with a synthetic resin such as polyethylene. However, the metal pipe 2 may be a water pipe, a fluid pipe such as a gas pipe, or a column pipe, instead of the electric wire protection pipe. Furthermore, the metal pipe 2 may not be a lining pipe, and may be made of a metal other than steel.

  In the protective cover 3, the cover body 5 is formed by, for example, appropriately cutting a vinyl chloride resin tube into a length. The cover body 5 is fitted on the outer peripheral side of the metal pipe 2, and is arranged so that a part thereof is embedded in the ground 1a and a part thereof is exposed to the ground 1b.

  The water stopping body 6 has a cover body fitting portion 6a that fits with the cover body 5 on one side (lower side) in the extending direction, and a nut fitting portion that fits with the cap nut 7 on the other side (upper side). 6b. A flange 6 c that protrudes outward is provided between the cover body fitting portion 6 a and the nut fitting portion 6 b, and this flange 6 c comes into contact with the upper end surface of the cover body 5. Here, the water stop body 6 is fixed to the cover body 5 by bonding the cover body fitting portion 6 a and the flange 6 c to the cover body 5. Therefore, in the illustrated embodiment, the cover body 5 and the waterstop body 6 constitute a protective cover body X.

  The nut fitting portion 6b has a pressed portion 6d to be pressed against the cap nut 7 on the tip side, and a screw forming portion 6e in which the screw portion X1 (male screw portion) is provided on the outer peripheral surface on the back side. Have That is, in the illustrated embodiment, the screw portion X <b> 1 that engages with the cap nut 7 is provided on the outer peripheral surface of the waterstop body 6. The pressed portion 6d has a tapered surface 6f whose outer peripheral surface is tapered. Specifically, the tapered surface 6f includes a first tapered surface 6g that is tapered on the back side, and a second tapered surface 6h that is tapered at a steeper slope than the first tapered surface 6g on the distal end side. ing. Further, the nut fitting portion 6b has a thin portion 6i at the tip, that is, the tip of the pressed portion 6d, and the thin portion 6i allows the tip 7a of the cap nut 7 and the metal pipe 2 to be connected. The gap between them is filled.

  The cap nut 7 is made of, for example, a synthetic resin, and is provided with a female screw portion 7b screwed to the screw portion X1 of the waterstop body 6 on the inner peripheral surface on one side (lower side). The peripheral surface has a pressing surface 7 c that presses the pressed portion 6 d of the waterstop body 6. And this press surface 7c is formed in the taper shape corresponding to the taper surface 6f of the to-be-pressed part 6d. Specifically, the pressing surface 7c is formed in a tapered shape corresponding to the first tapered surface 6g, and is tapered corresponding to the first tapered surface 7d that presses the first tapered surface 6g and the second tapered surface 6h. And a second pressing surface 7e that presses the second tapered surface 6h. Therefore, by screwing the female threaded portion 7b of the cap nut 7 into the screw portion X1 of the waterstop body 6, the pressed portion 6d (specifically, the tapered surface 6f) of the waterstop member 6 is pressed against the press surface 7c of the cap nut 7. As a result, the inner peripheral surface of the pressed part 6 d comes into close contact with the metal pipe 2.

  Next, the effect of the protective cover 3 of the metal pipe 2 having the above-described configuration and the startup pipe structure 4 of the metal pipe 2 will be described. According to the protective cover 3 and the start-up piping structure 4, the protective cover main body X in which the water stop body 6 is provided at the upper end portion 5 a of the cover body 5 made of a corrosion-resistant material has the cover body 5 in the ground of the metal pipe 2. The metal pipe 2 is fitted on the outer peripheral side so as to cover a portion from 1a to the ground 1b. Then, the cap nut 7 is fitted on the outer peripheral side of the water stop body 6 and screwed into the screw portion X1 of the protective cover body X (water stop body 6 in the illustrated embodiment), so that the water stop body 6 becomes the cap nut 7. Is pressed into contact with the metal pipe 2 and the water between the metal pipe 2 and the cover body 5 is stopped. That is, between the metal pipe 2 and the cover body 5 at the upper end portion 5 a of the cover body 5 exposed to the ground 1 b is stopped by the rubber water stop body 6, and the metal pipe 2 is connected to the cover body 5. With the water stop body 6 (specifically, the water stop body 6 and the cap nut 7), it is protected accurately. When the protective cover 3 is installed, the protective cover main body X is fitted on the outer peripheral side of the metal pipe 2 and the cap nut 7 is screwed into the protective cover main body X (waterstop body 6 in the illustrated embodiment). Well, this metal tube 2 can be easily protected. That is, the cover body 5 covers the portion of the metal pipe 2 from the ground 1a to the ground 1b, and the water stopping body 6 and the cap nut 7 stop the upper end portion 5a of the cover body 5 so that the metal The tube 2 can be accurately and easily protected.

  Further, by providing the screw portion X1 on the outer peripheral surface of the water-stopping body 6 made of rubber instead of the cover body 5, the screw portion X1 and the cap nut 7 (specifically, the female screw portion 7b) are firmly attached. The cap nut 7 does not loosen carelessly.

  In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, the cover body 5 may be a tube using a corrosion-resistant material, and is not limited to a vinyl chloride resin tube, may be composed of other synthetic resin tubes, and may be composed of a stainless steel tube or the like. .

  Further, the screw portion X1 is provided on the outer peripheral surface of the waterstop body 6, but may be provided on the outer peripheral surface of the cover body 5.

  Moreover, although the taper surface 6f in the to-be-pressed part 6d of the water stop body 6 has the 1st and 2nd taper surfaces 6g and 6h from which inclination differs, it may consist only of one taper surface. The same applies to the pressing surface 7c of the cap nut 7.

DESCRIPTION OF SYMBOLS 1a Underground 1b Ground 2 Metal pipe 3 Protective cover 4 Startup piping structure 5 Cover body 5a Upper end part 6 Water stop body 7 Cap nut X Protective cover main body X1 Screw part

Claims (2)

It is a protective cover that protects metal pipes that are piped up from the ground to the ground,
A cylindrical cover body made of a corrosion-resistant material, fitted on the outer peripheral side of the metal pipe so as to cover a portion of the metal pipe from the ground to the ground,
Provided at the upper end portion of the cover body, together with the cover body, fitted on the outer peripheral side of the metal tube, made of rubber, and an annular or tubular waterstop body,
A cap nut that is fitted to the outer peripheral side of the water stop body and is screwed into a screw portion provided in a protective cover body including the cover body and the water stop body,
The screw portion is provided on the outer peripheral surface of the water stop body, and the water stop body is pressed against the cap nut by the screwing of the cap nut into the screw portion, so that the metal pipe is in close contact with the metal pipe. A protective cover for a metal pipe, characterized in that water is stopped between the pipe making and the cover body. Metal pipes that are piped up from the ground to the ground,
A cylindrical cover body made of a corrosion-resistant material, fitted on the outer peripheral side of the metal pipe so as to cover a portion of the metal pipe from the ground to the ground,
Provided at the upper end of the cover body, together with the cover body, fitted on the outer peripheral side of the metal tube, made of rubber, an annular or tubular waterstop body,
A cap nut that is fitted on the outer peripheral side of the water stop body and screwed into a screw portion provided in a protective cover body including the cover body and the water stop body;
The screw portion is provided on the outer peripheral surface of the water stop body, and the water stop body is pressed against the cap nut by the screwing of the cap nut into the screw portion, so that the metal pipe is in close contact with the metal pipe. A metal pipe start-up piping structure characterized in that water is stopped between the pipe making and the cover body.

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