JPH06257688A - Tube with bent socket - Google Patents

Abstract

PURPOSE:To provide a compact tube having a bent socket allowing a fabrication without much labor, even in a case where large bore is required or a fabrication work is undertaken at a construction site in a restricted tunnel. CONSTITUTION:One end of a tube 1 is inserted in and jointed to a bent collar 2 where one section 21 of two halves is used as a tube insertion and joint section, the other half section 22 is used as a socket section, and the joint and socket sections are bent to each other in an axial direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe having a curved receiving port suitable for use in a pipe having a curvature in a tunnel.

[0002]

2. Description of the Related Art Conventionally, as a pipe with a curved receiving port used for a pipe having a curvature in a tunnel, for example, Japanese Patent Laid-Open No.
The one described in Japanese Patent No. 125382 is known.

As shown in FIG. 8, in this pipe with a bent receiving end, a pipe (b) having a receiving end (a) and a pipe (d) having an opening (c) are joined in a V-shape so that both pipes (b) and (d) are connected. The joining position E is made from one end.

In such a pipe with a bend receiving port, since the joint position e of both pipes b and d is located closer to one end, it is easier to transport in the tunnel as compared with the pipe having the joint position e in the center. The following effects can be obtained.

[0005]

However, in such a conventional pipe with a bend receiving port, it is not easy to join the pipes together as the diameter of the pipe becomes large. That is, since the pipes are bent at the joints, it is necessary to join a pipe with a large diameter while maintaining this at a predetermined bending angle. It is even more difficult on the spot.

The present invention has been made by paying attention to the problems in the conventional pipe with a bent receiving end, and its object is to solve the problems in the prior art and to have a large diameter. Or even at a construction site in a narrow tunnel,
An object of the present invention is to provide a compact pipe with a bent socket that can be manufactured without much labor.

[0007]

In order to achieve the above object, in the pipe with a bent receiving port according to the present invention, one half is a pipe insertion connecting port, and the other half is a receiving port. It is characterized in that one end of a pipe is inserted and joined to a pipe insertion joint port of a bent collar in which the pipe axes of the receiving ports are mutually bent.

In the present invention, the materials for the bending collar and the pipe are not particularly limited, but, for example, metal, hard vinyl chloride resin, FRP or mortar layers are laminated by FRP layers in a sandwich structure from above and below. The so-called FRPM etc. can be used.

[0009]

In the pipe with a bend receiving port according to the present invention, one half is a pipe insertion joint port and the other half is a reception port, and the pipe insertion joint port and the pipe axis of the reception port are bent. Since one end of the pipe is inserted and joined to the color pipe insertion joint, if the bending collar is manufactured in advance at the factory, the bending collar pipe insertion joint transported from the factory will be used at the construction site. Since only one end of the pipe is inserted and joined, compared to the conventional method of joining pipes while maintaining the bending angle, it is much easier, the cost is lower and the quality is constant. In addition, it is compact and can be transported in a narrow tunnel compared to conventional products.

Further, even if the bending collar is manufactured by joining the short pipes together at the construction site, since it is a joint of the short pipes, it is much easier than the joining of the pipes like the conventional product. is there.

[0011]

Embodiments of the present invention will now be described with reference to the drawings. [Embodiment 1] FIG. 1 is a front view showing an example of a pipe with a bent socket according to the present invention. In FIG. 1, 1 is a FRPM pipe, and 2 is a steel plate bending collar provided at one end of the FRPM pipe 1. The steel plate bending collar 2 is composed of one half portion 21 and the other half portion 22, and the one half portion 21 and the other half portion 22 are bent at an angle θ between each tube axis.

The steel plate bending collar 2 may be formed by joining a short pipe which is the one half 21 and a short pipe which is the other half 22, and is composed of the one half 21 and the other half 22. It may be manufactured by sheet metal processing or the like at once.

One end of the FRPM pipe 1 is inserted and joined into a pipe insertion joint which is one half 21 of the steel plate bending collar 2 to form a pipe A with a bent socket of the present invention, and the other half 22 of the bending collar 2 is formed. Is a receiving port, and an insertion port of another tube (not shown) can be inserted and joined into the receiving port.

[Operation of Embodiment 1] Next, the operation of the pipe with a bent socket according to the present invention shown in FIG. 1 will be described. In the pipe with a bend receiving port of the present invention shown in FIG. 1, if the bending collar 2 is manufactured in advance in a factory, at the construction site, one end of the pipe 1 is inserted into the pipe insertion joint 21 of the bending collar 2 transported from the factory. Since it is only inserted and joined, compared to the case of joining the pipes while maintaining the bending angle like the conventional product,
Much easier, cheaper and consistent quality is available.

Further, as shown in FIG. 2, a tunnel T having a wide diameter D is required to pass a receiving port a provided at the tip of the tube B, as shown by a two-dot chain line in the conventional product. On the other hand, in the case of the pipe with a bent receiving port according to the present invention shown in FIG. 1, it is sufficient if there is a diameter d through which the receiving port 22 inclined with respect to the pipe 1 can pass, and a tunnel t having a diameter d narrower than the conventional product. You can pass inside.

Even if the bending collar 2 is manufactured by joining the short pipes together at the construction site, since it is a joint between the short pipes, it is much easier than the joint between the pipes as in the conventional product. Is.

[Embodiment 2] FIG. 3 is a front view showing another example of a pipe with a bent socket according to the present invention. In the pipe B with a bent socket according to the present invention shown in FIG. 3, both ends of the FRPM pipe 1b are obliquely cut, and one end thereof is a half 21b of a bending collar 2b composed of one half 21b and the other half 22b. It is inserted and joined to the joint.

FIG. 4 shows a pipe A with a bent socket according to the present invention shown in FIG.
FIG. 4 is a plan view showing an example in which two pipes B of the present invention with a bent socket are shown in combination, and as shown in FIG. 4, a bent collar 2 of the pipe A with a bent socket of the present invention 2 Insert one end of the pipe 1b of the pipe B with a bent socket of the present invention into the socket of the other half 22 of the present invention, and insert the other into the socket of the other half 22b of the bent collar 2b of the pipe B with a bent socket of the present invention. Insert the one end of the pipe 1b of the pipe B with a bend receiving port of the present invention into the receiving portion of the other half 22b of the bending collar 2b of the pipe B with a bend receiving port of the present invention. By inserting the insertion opening of the pipe 1 of the attached pipe A, a pipe curved to a predetermined curvature can be formed.

FIG. 5 shows that one end of the pipe 1b of the bent pipe B of the present invention shown in FIG. 3 is inserted into the other half 22 of the bending collar 2 of the pipe A of the present invention shown in FIG. FIG. 6 is an enlarged cross-sectional view of a joint part in which the mouth is inserted and joined, and as shown in FIG. 5, the outer surface of the end portion of the pipe 1 of the pipe A with a bent socket of the present invention is chamfered 11.
On the other hand, the outer surface of the one end of the pipe 1b of the bent inlet pipe B of the present invention is also chamfered 11b, and the cement-based filler 3 is placed in the space formed between the chamfered portions 11 and 11b and the inner surface of the bending collar 2. It is filled.

FIG. 6 is an enlarged cross-sectional view showing an example in which the rubber ring 4 is used instead of the filler in the joint shown in FIG. 5, and in the joint shown in FIG. A ridge 23 projecting from the inner surface of the bending collar 2 is inserted and fitted in the concave groove 1 and, as shown in FIG. When the one end of the tube 1b of FIG.
The rubber ring 4 is properly inserted between the end of the tube 1 and the end of the tube 1b of the pipe B with the bend receiving port of the present invention, so that watertightness can be maintained.

[0021]

In the pipe with a bent socket according to the present invention, if the bending collar is manufactured in advance in the factory, at the construction site, only one end of the pipe is inserted and joined to the bending collar transported from the factory. Compared to the case of joining pipes while maintaining the bending angle as in the past, it is much easier, the cost is lower, and the quality is constant.
It is compact and can be transported in a narrow tunnel compared to conventional products.

Even if the bending collar is manufactured at the construction site, since it is a joint of short pipes, it is much easier than a joint of pipes as in the conventional product.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a pipe with a bent socket according to the present invention.

FIG. 2 is a partially cutaway front view showing a comparison between the pipe with a bent socket of the present invention and a conventional product.

FIG. 3 is a front view showing another example of the pipe with a bent socket according to the present invention.

FIG. 4 is a plan view showing an example of piping using the pipe with a bent socket of the present invention shown in FIG. 1 and the pipe with a bent socket of the present invention shown in FIG.

FIG. 5 is an enlarged cross-sectional view showing a joint portion.

FIG. 6 is an enlarged cross-sectional view showing another example of a joint portion.

7 is an enlarged cross-sectional view showing an example in which a pipe is inserted and joined to the joint portion shown in FIG.

FIG. 8 is a front view showing a conventional pipe with a bent socket.

[Explanation of symbols]

 A, B The present invention pipe with bent socket 1, 1b Pipe 11, 11b Chamfered portion 2 Bent collar 21, 21b One half portion 22, 22b Other half portion 3 Filler 4 Rubber ring

Claims (1)

[Claims] 1. A bent collar pipe insertion joint in which one half is a pipe insertion joint and the other half is a receptacle and the pipe axes of the pipe insertion joint and the receptacle are mutually bent. A pipe with a bent receiving end, characterized in that one end of the pipe is inserted and joined.