JPH06137460A - Pipe connecting device - Google Patents

Abstract

PURPOSE:To facilitate connecting operation of pipes from the ground outside a dug ditch in the case where a pipeline is laid inside the ditch which is dug on the ground. CONSTITUTION:A holding member 9 on an insertion port side is held at the outer peripheral surface of an insertion port 7 formed at the end of one pipe 4 to be connected. A taper ring member 8 having an inner circumferential tapered surface 28 for guiding insertion of the insertion port 7 into a receiving port 6 is held at the outer peripheral surface of the receiving port 6 formed at the end of the other pipe 3 to be connected. Means are provided in the holding member 9 on the insertion port side and the taper ring member 8, respectively, for connecting the members 8, 9 to each other and attracting the members 8, 9 by operation from the ground so as to insert the insertion port 7 into the receiving port 6 under guidance of the tapered surface 28. The holding member 9 on the insertion port side and the taper ring member 8 are lifted up to the ground after the connection therebetween is released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joining device for joining pipes laid in grooves cut from the surface of the earth.

[0002]

2. Description of the Related Art In the case of laying a pipeline in a groove cut from the surface of the earth, conventionally, an operator enters the groove,
I often wire the two pipes to be joined and operate this wire rope with a lever block to pull the two pipes together.

[0003]

However, such conventional work in the open-cut groove has a problem that there is a danger of collapsing the groove, the working environment is extremely bad, and the operation requires skill.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve such a problem and make it possible for anyone to easily carry out the joining work from the ground surface outside the open cut groove.

[0005]

In order to achieve the above object, the present invention is to be held on the outer peripheral surface of an insertion opening formed at the end of one of the pipes to be joined and to release the held state. An insertion side holding member that can be pulled up to the ground surface and an inner peripheral taper that is held on the outer circumference of the receiving opening formed at the end of the other pipe to be joined and guides the insertion of the insertion opening into this receiving opening. A taper ring member having a surface and capable of being pulled up to the ground after releasing the holding state, and the insertion side holding member and the taper ring member provided with the insertion side holding member and the tapering member. A means for connecting the insertion opening side holding member and the taper ring member to each other by an operation from the ground surface, and guiding the insertion opening to the inner peripheral tapered surface to insert the insertion opening into the receiving opening. Is.

[0006]

In this structure, when the pipes are joined together, for example, the tapering member is lowered from the ground surface into the open cut groove and held in the receiving port of the existing pipe already laid in the groove. Next, the insertion side holding member is attached to the insertion port of the new pipe to be joined, and the new pipe is lowered from the ground surface into the groove. Next, the insertion opening is formed on the inner peripheral tapered surface of the tapering member. Then, the taper ring member and the insertion side holding member are connected to each other, and the taper ring member and the insertion side holding member are pulled toward each other by an operation from the ground surface to guide the insertion port to the inner peripheral tapered surface. Insert into the mouth. Finally, the joining operation is completed by pulling up the insertion side holding member and the tapering portion to the ground surface.

[0007]

EXAMPLE In FIG. 7, reference numeral 1 denotes an excavation groove, which is excavated from the ground surface 2 to a predetermined depth. A pipe 3 has already been laid inside the excavation groove 1, and the next new pipe 4 is joined to the existing pipe 3. The existing pipe 3 has a receptacle 6 at one end in the groove 2.
Is buried so as to be exposed, and this receiving port 6 is joined to the insertion port 7 at the end of the new pipe 4. Receptacle 6
The taper ring member 8 is held on the outer surface of the
The insertion side holding member 9 is held on the outer surface of the.

1 and 2 show the detailed structure of the insertion side holding member 9. Here, 11 is an arc-shaped plate, which is placed on the upper surface of the insertion slot 7. Lateral support brackets 12 and 12 are provided on both sides of the plate 11, and the clamp hands 13 and 13 are respectively attached to the support brackets 12 and 12.
The central part of the is rotatably supported. Support bracket
A hydraulic jack 14 is provided between the ends of both clamp hands 13, 13 on the upper side of 12, 12. Therefore, by expanding and contracting the hydraulic jack 14, the clamp hands 13, 13 contact the surface of the insertion opening 7 and clamp the insertion opening 7 together with the plate 11 at three points in the circumferential direction, or release the clamped state. Or An upward support bracket 15 is provided on a portion of the plate 11 on the receiving side of the hydraulic jack 14, and a ring 16 is provided on an upper end of the support bracket 15.

1 and 3 to 6 show the detailed structure of the tapering member 8. The tapering member 8 includes a C-shaped saddle portion 17 placed on the upper portion of the receptacle 6, and a pair of arc-shaped opening / closing portions 18 and 18 rotatably connected to both ends of the saddle portion 17, respectively. It is formed in a ring shape having a hole, and can be attached to and detached from the receptacle 6 by opening and closing the opening / closing portions 18, 18. A groove 19 is formed on the inner circumference of the saddle portion 17, and the taper ring member 8 is positioned with respect to the receiving opening 6 by fitting the groove 19 into the outer peripheral projection 20 at the opening end of the receiving opening 6. . The opening / closing portions 18, 18 are provided at positions that do not engage with the outer peripheral surface of the receiving opening 6.

Reference numeral 21 is an opening / closing mechanism for the opening / closing sections 18, 18. As shown in the drawing, a bracket 22 is provided on one opening / closing part 18, and a horizontal bar 23 is rotatably supported by the bracket 22. A fork-shaped stopper 24 is provided at one end of the bar 23. Convex stop members 25, 25 are provided at the open / close ends of the open / close parts 18, 18.
The opening preventing members 25, 25 are configured to overlap each other when the opening / closing portions 18, 18 are closed. Stopper
With the rotation of the bar 23, the bar 24 can hold the open / close parts 18, 18 in a closed state by sandwiching the overlapping stop members 25, 25 from both sides.

At the other end of the bar 23, a stopper 24 has an opening / closing section 18,
It is bent in an L-shape that becomes horizontal when 18 is held in a closed state, and a disc-shaped ring 27 is attached to the tip of the bent portion 26. This ring 27 is also
It is provided in the same direction as the bent portion 26. On the inner circumference of the tapering member 8, there is provided a taper surface 28 whose diameter gradually decreases from the opening side of the tapering member 8 toward the receiving port 6 side.
It is formed all around. The minimum inner diameter of the tapered surface 28 is set to be larger than the outer diameter D2 of the insertion opening 7 and smaller than the inner diameter D3 of the pipe insertion opening in the receiving opening 6.

A bracket 31 is provided on the saddle portion 17, and a hydraulic jack 32 for joining which extends and contracts in the pipe axis direction is attached to the bracket 31. This jack
A hook 33 is rotatably attached to the telescopic end of 32, and the hook 33 can engage with the ring 16 by its rotation.

With this structure, when the new pipe 4 is joined to the existing pipe 3 shown in FIG. 7, the taper ring member 8 is suspended from the ground surface 2 into the excavation groove 1 to receive the saddle portion 17. Place it on the mouth 6 and open / close the opening 1
8 and 18 are closed, the opening preventing member 25 is overlapped, and this is sandwiched by the stopper 24 so that the opening / closing portions 18 and 18 are kept in the closed state.

On the other hand, by attaching the insertion side holding member 9 to the new pipe 4 and operating the hydraulic jack 14, the clamp hand
Clamp this tube 4 with 13 and plate 11. And
As shown, the holding member 9 clamps the pipe 4 into the groove 1.
It is hung inside and the insertion opening 7 is brought close to the receiving opening 6 as shown in FIG. 8, and this insertion opening 7 is placed in the tapering member 8. The hydraulic hoses 34, 34 to the jacks 14, 32 are guided from the groove 1 to the ground surface 2, and the jacks 14, 32 can be operated by an operating tool provided on the ground surface 2.

In this state, the jack 32 is operated and the hook
Move 33 closer to ring 16. Then, as shown in FIG. 9, the hook 33 is rotated so as to be lifted by the operating rod 35 from the surface 2 and engaged with the ring 16.

Next, when the jack 32 is operated to draw the holding member 9 for the insertion port toward the tapering member 8, the insertion port 7 is guided by the tapered surface 28 and is coaxial with the receiving port 6 as shown in FIG. After being put into a state, it is inserted into the receptacle 6. As a result, the joining of the pipes 3 and 4 is completed, but necessary members such as a sealing material are previously housed inside the receiving port 6.

After the joining is completed, as shown in FIG. 4, the operating rod 36 is inserted from the ground surface 2 into the groove 1 and the operating rod 36 is engaged with the ring 27 of the bent portion 26 of the bar 23 to fold the bent portion. 26 is rotated upward and the bar 23 is rotated to move the stopper 24 away from the stopper members 25, 25. As a result, the opening / closing part 18 is opened by its own weight, so that the hook 33 is removed from the ring 16 in the same manner as shown in FIG. 9, and the taper ring member 8 is lifted from the groove 1 as shown in FIG. Take it out to the surface 2.

In the insertion side holding member 9, the hydraulic jack 14 is operated to release the clamped state of the insertion port 7 by the clamp hand 13, and similarly lifted and taken out from the groove 1 to the ground surface 2 as shown in FIG. .

If it is not desirable to install the hydraulic jack 14 on the top of the pipe, such as when joining deformed pipes,
As shown in FIG. 12, the tapering member 8 can be held in the receiving port 6 in a state in which the tapering member 8 is rotated along the outer peripheral projection 20 within a range that does not come off from the receiving port 6.

FIG. 13 shows a modification of the tapering member 8. Here, the saddle portion 17 is formed in a U shape and has a pair of skirt portions 38 extending downward from both ends thereof. The opening / closing portion is not provided, and the taper ring member 8 is configured such that the lower half circumference thereof is open. With such a structure, the tapered ring member 8 can be held in the receiving port 6 only by dropping it from the ground surface 2 into the groove 1, and it is not necessary to operate the opening / closing portion or the opening / closing mechanism, so that the work can be easily performed. be able to. Similarly, the holding state can be released simply by lifting it toward the surface of the earth.

FIG. 14 shows a modification around the joining hydraulic jack 32. In the previous embodiment, the taper ring member 8 and the insertion side holding member 9 were openably connected using the ring 16 and the hook 33, but in this example, both are fixed to each other. ing. That is, the insertion-side holding member 9 is provided with the upward-facing bracket 40, and the bracket 40 and the expansion / contraction end of the hydraulic jack 32 are combined with the bolt / nut 41.
Are connected together by. With such a configuration, the work of attaching and detaching the hook 33 and the ring 16 is not necessary, so that an easy work is possible.

The integrated taper member 8 and the insertion-side holding member 9 lower the new pipe 4 into the groove 1 and insert it.
Of the insertion opening 7 and the receiving opening 6
Attach to. Further, even after the joining of the pipes 3 and 4 is completed, the taper ring member 8 and the insertion side holding member 9 can be integrally lifted to the ground surface 2.

FIG. 15 shows a further modification around the hydraulic jack 32 for joining. Here, a hook 33 is rotatably provided on the bracket 15 of the insertion side holding member 9, and a ring 16 is provided on the hydraulic jack 32 of the taper ring member 8.

FIG. 16 shows a modification of the insertion side holding member 9. Here, a plurality of protrusions 44 are provided at appropriate positions on the outer circumference of the insertion slot 4.
Is formed by casting or the like, and the insertion side holding member 9 is
It is composed of a lower open C-shaped member that fits into the outer periphery of the insertion slot 7 from above and engages with the protrusion 44. With such a structure, the clamping work by the hydraulic jack and the clamping hand becomes unnecessary, so that the easy work becomes possible.

[0025]

As described above, according to the present invention, the insertion side holding member that can be pulled up to the ground surface, the taper member that is held on the outer periphery of the receiving port and that can be pulled up to the ground surface, and the operation from the ground surface. Therefore, the insertion side holding member and the tapering member are pulled toward each other so that the insertion port is guided to the inner peripheral tapered surface and inserted into the receiving port. But you can easily join the pipes.

[Brief description of drawings]

FIG. 1 is a front view of a pipe joining device according to an embodiment of the present invention.

FIG. 2 is a side view of an insertion side holding member in FIG.

FIG. 3 is a side view of the taper ring member in FIG.

FIG. 4 is an enlarged view of a main part of the taper ring member of FIG.

FIG. 5 is a bottom view of the portion shown in FIG.

6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is a view showing a usage state of the pipe joining device.

FIG. 8 is a diagram showing a usage state in the next stage of FIG. 7.

FIG. 9 is a view showing a connecting work between the hook and the ring in FIG.

FIG. 10 is a diagram showing a usage state in the next stage of FIG. 8.

FIG. 11 is a front view illustrating the function of the taper surface of the taper ring member.

FIG. 12 is a front view showing a deformed and held state of a taper ring member.

FIG. 13 is a side view showing a modified example of the taper ring member.

FIG. 14 is a view showing a modified example of the connection structure of the taper ring member and the insertion side holding member.

FIG. 15 is a view showing a further modified example of the connection structure of the taper ring member and the insertion side holding member.

FIG. 16 is a view showing a modified example of the insertion side holding member.

[Explanation of symbols]

 1 Cutting groove 2 Ground surface 3 Pipe 4 Pipe 6 Receptacle 7 Insertion opening 8 Tapering ring member 9 Insertion side holding member 16 Ring 28 Tapered surface 32 Hydraulic jack for joining 33 Hook

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsushi Maki 2-26 Ohamacho Amagasaki City Hyogo Prefecture Kubota Mukogawa Factory (72) Inventor Atsushi Niiyama 2-26 Ohamacho Amagasaki City Hyogo Prefecture Stock company Kubota Mukogawa Works (72) Inventor Toshiyuki Yonezu 3-16-9 Kanda, Chiyoda-ku, Tokyo Nihon Cast Iron Tube Co., Ltd.

Claims (1)

[Claims] 1. A device for joining pipes laid in a groove cut from the ground surface, which is held on an outer peripheral surface of an insertion opening formed at an end of one pipe to be joined. At the same time, the holding member is held on the outer periphery of the receiving opening formed at the end of the other pipe to be joined with the holding member that can be pulled up to the ground after releasing the holding state, and is inserted into this receiving opening. A taper ring member that has an inner peripheral tapered surface that guides the insertion of the mouth and that can be pulled up to the ground after releasing the holding state, and the insertion side holding member and the taper ring member. While connecting the side holding member and the tapering member, pulling the insertion side holding member and the tapering member from each other by an operation from the ground,
A pipe joining apparatus comprising: a means for guiding the insertion opening into the inner peripheral tapered surface to insert the insertion opening into the receiving opening.