JPH11336328A - Hanging guide for pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily hang down a pipe member with a connecting flange even in the case of an existing structure. SOLUTION: This hanging guide for a pipe is composed of a tip guide 10 and a rear end guide 20. The tip guide 10 is formed in conical shape and provided with an inward flange 12 connected to a tip connecting flange 32 of a pipe member 30, and a nut 14 is fixed to the inner surface of the inward flange 24. The rear end guide 20 is arranged to cover the rear end part outer peripheral surface of the pipe member 30 and formed in skirt shape small in diameter on the tip side so as to form half divided structure comprising semicircular members 22a, 22b. The semicircular members 22a, 22b are provided with inward flanges 24 connected to a rear end connecting flange 36 of the pipe member 30, and a nut 26 is fixed to the inner surface of each inward flange 24. When the tip guide 10 and the rear end guide are lifted and recovered, the inward flanges 12, 24 are put together and integrated, and an eye bolt 16 provided at the tip of the tip guide 10 is connected to a wire 44 of a winch through a wire 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide for suspending a pipe member having connection flanges at both ends, and more particularly to a guide having an outward connection flange at a place where a structure such as a work stair or a frame is provided inside. A guide for suspending piping suitable for suspending a pipe member.

[0002]

2. Description of the Related Art Conventionally, when a pipe is installed in a long shaft, the pipe is divided into appropriate lengths, connection flanges are attached to both ends of the divided pipe (pipe member), and a winch wire is connected to the connection flange. Are connected to each other, and the pipe members are sequentially suspended in the shaft, and the respective pipe members are connected to each other by bolts via connection flanges.

[0003]

However, as described above, the method of connecting a wire to the connecting flange of a pipe member and suspending the pipe in a narrow shaft is provided with a work stair or a frame for fixing piping in a narrow shaft. In such a case, when the pipe member is suspended over a long distance, the pipe member swings and the connection flange projecting from the pipe member main body is caught on the work stairs or the frame, so that not only the pipe member cannot be suspended smoothly but also is dangerous. The present invention has been made in order to solve the above-mentioned drawbacks of the related art, and it is an object of the present invention to easily suspend a pipe member having a connection flange even when a structure exists. .

[0004]

In order to achieve the above object, a pipe suspension guide according to the present invention is a guide for suspending a pipe member provided with connection flanges at both ends, A tapered distal end guide having an inward flange coupled to the connection flange on the distal end side of the pipe member; and a tapered distal end guide disposed over an outer peripheral surface of a rear end portion of the pipe member and coupled to the connection flange on the rear end side. It has an inward-facing flange, and has a configuration in which the front end side is formed of a small-diameter skirt-shaped rear end guide. It is desirable that the rear end guide be divided into a plurality in the circumferential direction. The leading end guide and the trailing end guide are formed so as to be connectable via an inward flange, and the leading end guide can be provided with a hanging portion connected to the wire of the hoisting device at the leading end.

[0005]

According to the present invention constructed as described above, a tapered tip guide such as a conical shape having an inward flange is attached to the distal connection flange of the pipe member to be suspended, and the inner end is connected to the rear connection flange of the pipe member. Since the front end side having a direction flange is attached with a small-diameter skirt-shaped rear end guide to cover the outer peripheral surface of the rear end portion of the pipe member, the diameter gradually increases from the front end side of each connection flange toward the connection flange. Even if the pipe member is hung at a place where the structure is located, the connection flange portion does not catch on the structure, and the tube member can be hung smoothly and safely.

[0006] By dividing the rear end guide into a plurality of parts in the circumferential direction, the rear end guide can be easily mounted on the pipe member, and the maximum outer diameter of the rear end guide is made the same as the connection flange of the pipe member. And miniaturization can be achieved.
Further, when the leading end guide and the trailing end guide can be connected by an inward flange and a hanging portion connected to the wire of the hoisting device is provided at the leading end of the leading end guide, the guide is lifted after the pipe member is hung and collected. In this case, the front end guide and the rear end guide can be collected integrally, and the guide can be collected smoothly without being caught by the structure in order to lift the front end of the front end guide.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a pipe suspension guide according to the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 are explanatory views of a pipe suspension guide according to an embodiment of the present invention. FIG. 1 (1) shows a state in which a pipe member is suspended, and FIG. FIG. 2 shows a state in which the lowering guide is lifted and collected, and FIG. 2 is a cross-sectional view of a state in which the pipe member is suspended.

In these figures, the suspension guide comprises a front end guide 10 having a tapered (conical) front end, and a skirt-shaped rear end guide 20. The tip guide 10
When the pipe member 30 is hung as indicated by an arrow 40 in FIG. 1A, the pipe member 30 has an inward flange 12 at an upper end opening to be connected to a distal end connection flange 32 provided on a pipe body 31 on the lower end side. . A plurality (four in this embodiment) of nuts 14 are fixed by welding to the inner surface of the inward flange 12, that is, the lower surface of FIG. The bolt 34 having the connection flange 32 and the inward flange 12 penetrated is connected to the nut 14
, The distal end guide 10 can be connected to the distal end connection flange 32. At the tip of the tip guide 10, an eyebolt 16 as a hanging portion is provided.
When the tip guide 10 is lifted as indicated by an arrow 46 in FIG. 1 (2), the eyebolts 16 are connected to the winch wire 44 as a hoisting device via the hanging wire 42. ing.

The rear end guide 20 is arranged so as to cover the outer peripheral surface of the rear end portion of the tube main body 31, and has a skirt shape having a small diameter on the front end side (the lower side in FIG. 2). The rear end guide 20 has a half-split structure including semicircular members 22a and 22b. Each semicircular member 22a and 22b has an inward flange 24 connected to a rear end connecting flange 36 of the pipe member 30. Is provided. Also, the inner surface of the inward flange 24,
That is, a plurality of (six in this embodiment) nuts 26 are fixed to the lower surface of FIG. 1A by welding at intervals of 60 degrees from the center. Of these nuts 26, two nuts 2 located in the diameter direction of the pipe body 31
6 is screwed with an eyebolt 38 having the rear end connecting flange 36 and the inward flange 24 penetrated therethrough, and the other four nuts 26 are screwed with the bolt 34 having the rear end connecting flange 36 and the inward flange 24 penetrated therethrough. The rear end guide 20 can be connected to the rear end connection flange 36 by the combination. When the pipe member 30 is suspended as indicated by an arrow 40, the eye bolt 38 is connected to the winch wire 44 via the suspension wire 42.

[0010] When collecting the rear end guide 20,
As shown in FIG. 1 (2), the inward flanges 24 of the semicircular members 22a and 22b and the inward flange 12 of the tip guide 10 are joined together, and both are joined by bolts.
The operation of suspending pipes using the suspension guide according to the embodiment configured as described above will be described by taking as an example a pipe installation operation in a drain shaft of an underground power plant.

FIG. 3 is a partial vertical sectional view of a drain shaft of an underground power plant, and FIG. 4 is a sectional view taken along line AA of FIG. In these figures, the drain shaft 50 has a liner 52 disposed along the wall surface. A stair frame 54 is provided inside the liner 52. The staircase frame 54 has four columns 56 arranged in a rectangular shape. These columns 56 are connected to each other by the beam members 58 and connected to the inner surface of the liner 52 via the support 60. It is. In addition, a work stair 68 for assembling pipes such as water drainage pipes 62 and 64 and an in-house drain pipe 66 shown in a two-dot chain line in FIG. 4 and for maintaining and checking the pipes is attached to the pillar 56. .

The liner 52, the stair frame 54, and the work stair 68 are divided into fixed lengths and assembled as a unit, and as shown in FIG. 70, the column 56a is suspended by the drain shaft 50, and the column 56a is connected to the lower column 56 by an operator 72. When the columns 56 and 56a are connected, the column 56a and the hanging balance 70 are connected.
The lifting balance 70 is lifted by the winch. Work stairs 6 provided inside liner 52
8, as shown in FIG.
4 is formed by the staircase frame 54, and the pipe space 74 is provided with drainage pipes 62 and 64, and a drain pipe 66 inside the facility
Are stored and arranged.

The insertion of the pipe into the pipe space 74 is performed as shown in FIGS. The pipe is a pipe member 3 of a predetermined length provided with connection flanges 32 and 36 at both ends.
Unitized to 0. Then, the pipe member 30 is arranged as shown in FIG.
As shown in (1), it is carried into the drainage tunnel 76 in which the upper part of the drainage shaft 50 is open, and is suspended by the crane 80 of the work vehicle 78 on the upper part of the drainage shaft 50.

After that, when the pipe member 30 is suspended in the drain shaft 50, the rear end guide 20 is attached to the rear end connection flange 36 which is on the upper side (see FIG. 6), and the eye bolt 38 shown in FIG. Is connected to the wire 44 of the winch 82 via the suspension wire 42. The pipe member 30 is suspended at the center in the longitudinal direction by a crane 80, and a pull wire 86 operated by an operator 84 is connected to a lower side, which is a tip side. Next, the winch operator 88 winds up the wire 44 as indicated by an arrow 92 and raises the upper side (rear end side) of the tube member 30 as indicated by an arrow 94 in accordance with the signal of the signer 90. At this time, the crane 80 of the work vehicle 78 is operated, the crane wire 96 is wound up with the boom fixed, and the pipe member 30 is lifted in synchronization with the winding of the winch wire 44. Then, as the winch wire 44 and the crane wire 96 are wound, as shown in FIG. 7, the operator 84 pulls the pull wire 86 and slides the pipe member 30 under the pipe member 30 to move the pipe space. 74. Thereafter, the sling is removed, and the pipe member 30 is held in a state of being suspended by the wire 44 of the winch 82.
As shown in (2), an operator 98 descends into the drain shaft 50, and attaches the tip guide 10 to the tip connection flange 32 of the pipe member 30 in the drain shaft 50. At this time, the opening below the work position is closed by the scaffold plate 100 for closing.

After the tip guide 10 is attached to the pipe member 30, the plywood closing the lower pipe space 74 is removed, and the wire 44 is fed out as indicated by an arrow 102 in FIG. Hang it inside. At this time, the conical tip guide 10 having a gradually increasing diameter from the lower side to the upper side is attached to the tip connection flange 32 of the pipe member 30, and a similar skirt-shaped rear end is attached to the upper end connection flange 36. Since the guide 20 is mounted, even if the pipe member 30 swings due to the return of the twist of the wire 44 and contacts the stair frame 54, the connection flanges 32 and 36 are not caught by the stair frame 54 and the like, The member 30 can be hung smoothly and safely. In addition, the rear end flange 20 is connected to the semicircular member 2.
Since it has a half-split structure composed of 2a and 22b, the maximum outer diameter can be made the same as the outer shape of the rear end connection flange 36, and downsizing can be achieved.

When the pipe member 30 is suspended to a predetermined position, the fact is communicated to the lower worker by radio. The lower worker removes the tip guide 1 from the suspended pipe member 30.
0 is removed, and the lower pipe (pipe member) already arranged and fixed in the drain shaft 50 and the suspended pipe member 30 are connected by bolts via connection flanges. Thereafter, the rear end guide 20 is removed from the pipe member 30 and, as shown in FIG. 1 (2), the front end guide 10 and the rear end guide 20 are joined together by the bolts 34 with the inward flanges 12 and 24 aligned. The suspension wire 4 is attached to the eye bolt 16 of the guide 10.
2, the wire 44 of the winch 82 is connected, and the arrow 4
The leading end guide 10 and the trailing end guide 20 are integrally lifted by the winch 82 as shown in FIG. Hereinafter, similarly, a required number of pipe members 30 are suspended in the drain shaft 50 and connected to each other.

As described above, the front end guide 10 and the rear end guide 20 according to the embodiment are connected to the connecting flange 3 of the pipe member 30.
2 and 36, the pipe member 30 can be prevented from being caught on the stair frame 54 or the like.
0 can be hung smoothly and safely. Further, when the tip guide 10 and the rear end guide 20 are lifted above the drain shaft 50 and collected, the respective inward flanges 1
Since the guides 10 and 20 are integrated via the eye guides 2 and 24 and are lifted up through the eyebolts 16 provided at the end of the end guide 10, the guides 10 and 20 may be caught by the stair frame 54 or the like at the time of recovery. In addition, easy and quick recovery can be performed.

In the above embodiment, the case where the rear end guide 20 has a half-split structure has been described.
It may be divided into three or more in the circumferential direction. Further, in the above embodiment, the case where the pipe member 30 is suspended in the drain shaft 50 has been described, but the present invention is not limited to this. Further, in the above-described embodiment, the case where the distal end guide 10 has a conical shape has been described. In the above-described embodiment, the inward flanges 12 and 24 between the front end guide 10 and the rear end guide 20 are provided.
Although the case where the nuts 14 and 26 are fixed to the inner surfaces of the inward flanges has been described, screws may be formed directly on the inward flanges 12 and 24.

[0019]

As described above, according to the present invention, a tapered distal end guide such as a conical shape having an inward flange is attached to the distal end side connection flange of the suspended pipe member, A distal end side having an inward flange at the end side connection flange is attached to a skirt-shaped rear end guide with a small diameter to cover the outer peripheral surface of the rear end of the pipe member, and the diameter gradually increases from the distal end side of each connection flange toward the connection flange. Therefore, even if the pipe member is hung at the place where the structure is located, the connection flange portion does not catch on the structure, and the tube member can be hung smoothly and safely.

By dividing the rear end guide into a plurality in the circumferential direction, the rear end guide can be easily mounted on the pipe member, and the maximum outer diameter of the rear end guide is made the same as the connection flange of the pipe member. And miniaturization can be achieved.
Further, if the leading end guide and the trailing end guide can be connected by an inward flange, and a hanging portion connected to the wire of the hoisting device is provided at the leading end of the leading end guide, the guide is lifted after the pipe member is hung and collected. In this case, the front end guide and the rear end guide can be collected integrally, and the guide can be collected smoothly without being caught by the structure in order to lift the front end of the front end guide.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a pipe suspension guide according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a state in which a pipe member is suspended by a suspension guide according to the embodiment of the present invention.

FIG. 3 is a partial vertical sectional view of a drain shaft of an underground power plant that suspends pipes using a suspension guide according to the embodiment.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is an explanatory diagram of an operation of suspending a pipe member using the suspension guide according to the embodiment, and is an explanatory diagram of an operation of carrying the tube member into a drainage tunnel.

FIG. 6 is an explanatory diagram of an operation of suspending a pipe member using the suspending guide according to the embodiment, and is an explanatory diagram of an operation of attaching a rear end guide to the tube member.

FIG. 7 is an explanatory diagram of an operation of suspending a pipe member using the suspension guide according to the embodiment, and is an explanatory diagram of an operation of inserting a distal end of the tube member into a drain shaft.

FIG. 8 is an explanatory diagram of an operation of suspending a pipe member using the suspension guide according to the embodiment, and is an explanatory diagram of an operation of attaching a distal end guide to the tube member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Tip guide 12, 24 Inward flange 14, 26 Nut 16 Hanging part (eye bolt) 30 Pipe member 32 Tip connection flange 36 Rear end connection flange

Claims (3)

[Claims] 1. A guide for suspending a pipe member provided with connection flanges at both ends, the tapered tip guide having an inward flange coupled to the connection flange on the distal end side of the pipe member. A pipe having an inward flange disposed over an outer peripheral surface of a rear end portion of the pipe member to be coupled to the connection flange on the rear end side, the front end side comprising a small-diameter skirt-shaped rear end guide. Hanging guide. 2. The pipe suspension guide according to claim 1, wherein the rear end guide is divided into a plurality in the circumferential direction. 3. The front end guide and the rear end guide are formed so as to be connectable via the inward flange, and the front end guide has a hanging portion connected to a wire of a hoisting device at the front end. The pipe suspension guide according to claim 1 or 2, wherein: