JPH05192794A - Bevel aligning device for piping - Google Patents

Abstract

PURPOSE:To simplify work, to reduce the working time, to improve working efficiency and to reduce expenses. CONSTITUTION:The bevel aligning device for piping is provided with a sleeve side jig 11 on which one ends of a couple of clamps 12 and 13 are freely rotatable mutually by a hinge 14 and the other ends thereof are freely attachable and detachable by a coupling bolt 15, a fitting piping side jig 31 on which one ends of a couple of clamps 32 and 33 are freely rotatable mutually by a hinge 34 and the other ends thereof are freely attachable and detachable by a coupling bolt 35 and fitting correction bolts 16 and 36 provided freely movably along the inwards on the clamps 12 and 32 of the sleeve side jig 11 and the fitting piping side jig 31. In addition, press fittings 17 and 37 which are fitted to the tips of the fitting correction bolts 16 and 36 and press and support a sleeve A and fitting side piping B against the clamps 13 and 33, plural bevel interval adjusting bolts 25 and 26 which connect the sleeve A with the fitting side piping B and adjust the quantity of insertion of both and an aligning bolt 21 to fit the axial center positions of the sleeve A and the fitting side piping B are provided. The fitting of the jigs, correction of piping, aligning and each adjusting work of the quantity of insertion can be carried out only by adjusting each bolt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe, and more particularly to a pipe groove aligning apparatus applied to a groove aligning work in a small diameter pipe construction.

[0002]

2. Description of the Related Art In piping work, when a sleeve and a pipe are connected and fixed by welding, the fitting positions of the sleeve and the pipe must be matched in advance. Conventionally, the groove alignment work of the pipe is performed manually by an operator.

FIG. 6 shows a work procedure for the conventional groove alignment work for piping. As shown in the figure, first, the sleeve and the mounting side pipe are held by using wires or a pedestal so that the end faces of the pipes are brought close to each other and the axial centers of the pipes are roughly aligned with each other. Next, while the sleeve and the mounting side pipe are held, the groove interval (route gap) between them is adjusted, that is, the insertion amount is adjusted and the centering work is performed at the same time. When the alignment of the fixed side pipe and the mounting side pipe is completed in this way, tack welding is performed in this state. Then, the next groove alignment work is performed.

[0004]

In the above-mentioned conventional pipe groove alignment work, the adjustment work of the insertion amount of the sleeve and the pipe and the alignment work are performed manually by the operator. Even if a lifting device is used as the equipment, there is a problem that each work requires a great deal of labor and takes a long working time. Although temporary welding is performed after the pipe groove alignment work is completed, the above-mentioned operations take a long time, so the worker who performs the temporary welding waits until the pipe groove alignment work is completed. There is a problem that work efficiency is poor.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a pipe groove aligning device for improving work efficiency.

[0006]

A pipe groove aligning device of the present invention for achieving the above object is a pipe groove aligning device for aligning end faces axially opposed to each other. One end of the clamp is rotatable by a hinge and the other end is detachable by a coupling mechanism. A sleeve side jig that surrounds the outer circumference of the sleeve, and one end of a pair of clamps is rotatable by a hinge and the other end is by a coupling mechanism. A mounting pipe side jig that surrounds the outer periphery of the removable mounting side pipe, and a mounting straightening bolt that is movably provided along the inside of one of the sleeve side jig and the mounting pipe side jig. A pressing metal fitting that is attached to the tip of the mounting straightening bolt and presses and supports the sleeve and the mounting side pipe against the other clamp, connects the sleeve and the mounting side pipe, and connects the sleeve and the mounting side pipe. And a plurality of root gap adjusting bolt for adjusting the insertion amount of the attached pipe, is characterized in that comprises a centering bolt to adapt the axial position of the sleeve and the mounting pipe.

[0007]

In order to perform the groove alignment work between the sleeve and the mounting side pipe, the sleeve side jig surrounds the outer circumference of the sleeve, while the mounting pipe side jig surrounds the mounting side pipe, and the sleeve side jig and The pressing metal fitting is moved by a plurality of mounting straightening bolts respectively provided on the mounting piping jig, and the pressing metal fitting and the clamp support the sleeve and the mounting piping. Then, connect the sleeve pipe and the mounting side pipe, adjust the axial center position of the mounting side pipe with respect to the sleeve with a plurality of centering bolts, and adjust the insertion amount of the mounting side pipe with the sleeve with a plurality of groove spacing adjustment bolts. To do.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a perspective view of a pipe groove aligning apparatus according to an embodiment of the present invention, FIG. 2 is a partially cut side surface of the pipe groove aligning apparatus, and FIG. 3 is a sectional view taken along line CC of FIG. 4 is the arrow D of FIG.
FIG. 5 shows a work procedure for the groove alignment work of the pipe.

In the pipe groove aligning apparatus of this embodiment, as shown in FIGS. 1 to 4, the sleeve side jig 11 surrounds the outer circumference of the sleeve A and holds it. That is, the pair of clamps 12 and 13 each have an L-shape, one end of which is rotatable with the hinge 14, and the other end of which is detachable with a coupling bolt 15 as a coupling mechanism.

A mounting straightening bolt 16 is screwed onto the upper part of one clamp 12 so as to be axially movable downward from the outside, and a holding metal fitting 17 is fixed to the tip of the mounting straightening bolt 16. Has been done. A V-shaped support surface 18 for supporting the outer circumference of the sleeve A is provided on the lower surface of the holding metal fitting 17.
On the other hand, the other clamp 13 is formed with a V-shaped support surface 19 facing the support surface 18 and similarly supporting the outer circumference of the sleeve A.

On the other hand, the mounting pipe side jig 31 is mounted on the mounting side pipe B.
It encloses the outer periphery of and holds it. That is,
Each of the pair of clamps 32 and 33 has an L-shape, one end of which is rotatable by a hinge 34, and the other end of which is detachable from each other by a coupling bolt 35 as a coupling mechanism. A mounting straightening bolt 36 is screwed onto the upper portion of one of the clamps 32 so as to be axially movable downward from the outside.
A retainer metal fitting 37 is fixed to the tip portion of 6. On the lower surface of the holding metal fitting 37, a V for supporting the outer circumference of the mounting side pipe B
While the V-shaped support surface 38 is formed, the other clamp 3
A V-shaped support surface 39 that similarly supports the outer periphery of the attachment side pipe B is formed on the surface 3 of the support member 3 so as to face the support surface 38.

The metal fittings 17, 37 and the clamp 1
The V-shape of each of the support surfaces 18, 19, 38, 39 of 3, 33 is set according to the sizes of the sleeve A and the fixed side pipe B, so that the sleeve A and the sleeve side jig 11
The center of the shaft and the center of the fixed-side pipe B and the mounting-pipe side jig 31 coincide with each other, which facilitates the centering.

The clamp 13 of the sleeve-side jig 11 is integrally fixed at its lower end to the base end of the centering metal fitting 20 along the axial direction, and at the tip end of the centering metalwork 20. Are screwed from the outside of the clamp 13 along the radial direction. The tip of the centering bolt 21 can come into contact with the lower end of the clamp 33 of the jig 31 for the mounting pipe.

Further, a base end portion of the interval adjusting metal piece 22 along the axial direction is integrally fixed to the pair of clamps 12 and 13 at a position opposed to the outer peripheral portion by 180 degrees, as shown in FIG. A supporting piece 24 is attached to the tip of the space adjusting metal piece 22 with a fixing bolt 23. And
Interval adjustment bolts 25 are respectively screwed into the clamps 12 and 13 at positions corresponding to the interval adjustment hardware 22 toward the attachment side pipe B along the axial directions of the pipes A and B. on the other hand,
Spacer adjusting bolts 26 along the axial direction of the pipes A and B are threadedly engaged with the support piece 24 toward the sleeve A, and the tip end portions of the space adjusting bolts 25 and 26 are positioned to face each other, and the mounting pipe side The clamp 32 of the jig 31 can be held.

The clamp 32 of the jig 31 on the mounting pipe side
A scale plate 27 is attached to the dial, and a pointer 28 is attached to the interval adjusting metal piece 22 corresponding to the scale plate 27.

Then, the groove aligning work of the sleeve A and the mounting side pipe B will be explained based on the work procedure shown in FIG. First, the sleeve A and the attachment side pipe B to be joined are suspended and supported by a wire (not shown), or both ends are held by a pedestal. On the other hand, the sleeve side jig 11 and the mounting pipe side jig 31 are connected in advance by the centering bolt 21 and the gap adjusting bolts 25 and 26. Then, from this connected state, the hinges 14 and 34 are opened, and the clamps 12, 13 and 32 and 33 surround the sleeve A and the mounting side pipe B, and the coupling bolts 15 and 35.
The other end of each clamp 12, 13 and 32, 33 is joined by.

Then, as shown in FIGS. 1, 3 and 4, by moving the mounting correction bolt 16 in the axial direction,
The V-shaped support surface 18 of the holding metal fitting 17 and the V-shaped support surface 19 of the clamp 13 mounted on the tip of the mounting straightening bolt 16 securely holds the sleeve A, and at this time, the fixed side pipe Correct the deformation at the end of A. Similarly, by moving the mounting straightening bolt 36 in the axial direction, the V-shaped supporting surface 38 of the holding metal fitting 37 and the V-shaped supporting surface 3 of the clamp 33 mounted on the tip of the mounting straightening bolt 36.
9 and 9 securely hold the mounting side pipe B, and at this time, the deformation of the end portion of the mounting side pipe B is corrected. At this time, the centering bolts 21 are moved in the axial direction to move the mounting pipe side jig 31.
By slightly moving, the axial center position of the mounting side pipe B with respect to the sleeve A is adjusted and adapted.

Further, as shown in FIG. 2, by moving the groove spacing adjusting bolts 25 and 26 in the axial direction, first,
The end surface of the mounting side pipe B is brought closer to the end surface of the sleeve A, and the mounting side pipe B is further moved to fully insert the mounting side pipe B into the sleeve A for initial fixing. At this time, the pointer 28 is aligned with the 0 position of the scale plate 27. Then, again, the groove spacing adjusting bolts 25 and 26 are moved to set the mounting side pipe B to a predetermined insertion amount.

After the adjustment of the insertion amount between the sleeve A and the mounting side pipe B is completed in this way, the insertion amount between another sleeve and the mounting side pipe is adjusted, that is, the groove alignment work is performed. And after completing the groove alignment work of a predetermined number of pipes,
Perform the temporary welding work of the sleeve and the mounting side pipe together. By preparing a required number of jigs in this way, the waiting time for tack welding work can be eliminated.

[0021]

As described above in detail with reference to the embodiments, according to the pipe groove aligning apparatus of the present invention, one end of the pair of clamps is rotatable with the hinge and the other end is with the coupling mechanism. A detachable sleeve side jig and mounting pipe side jig are provided, and one of the sleeve side jig and the mounting pipe side jig is provided with a mounting straightening bolt that is movable along its inside, and its tip is provided. Mounting sleeve to press the sleeve and the mounting side pipe against the other clamp to support it, connect the sleeve and the mounting side pipe, and adjust the insertion amount of the two groove spacing adjustment bolts and the sleeve and mounting side. Since the centering bolt that matches the axial center position with the pipe is provided, it is possible to perform jig mounting, pipe straightening, centering, and adjustment of the insertion amount by adjusting each bolt only.
The work can be simplified, the work can be easily performed, and the work time can be shortened. As a result, it is possible to improve work efficiency and save costs.

[Brief description of drawings]

FIG. 1 is a perspective view of an alignment device for piping according to an embodiment of the present invention.

FIG. 2 is a partially cutaway side view of a pipe groove aligning device.

3 is a cross-sectional view taken along line CC of FIG. 2 showing a sleeve-side jig.

FIG. 4 is a view taken along the arrow D of FIG.

FIG. 5 is a block diagram showing a work procedure of a groove alignment work for piping.

FIG. 6 is a block diagram showing a work procedure of a groove alignment work of a conventional pipe.

[Explanation of symbols]

 11 Sleeve-side jig 12, 13 32, 33 Clamp 15, 35 Coupling bolt (combining mechanism) 16, 36 Mounting straightening bolt 17, 37 Holding jig 18, 19, 38, 39 Support surface 20 Centering metal fitting 21 Centering bolt 22 Interval adjustment hardware 25, 26 Interval adjustment bolt 31 Mounting pipe side jig A Sleeve B Mounting side pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshimi Tanaka 1-1-1 Wadazaki-cho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Heavy Industries Ltd. Kobe Shipyard

Claims (1)

[Claims] 1. A pipe groove aligning device for aligning end faces axially opposed to each other, wherein a pair of clamps has one end rotatable by a hinge and the other end detachable by a coupling mechanism. A sleeve-side jig surrounding the outer circumference of a mounting-side pipe having one end of a pair of clamps rotatable by a hinge and the other end being detachable by a coupling mechanism; A mounting straightening bolt movably provided inward on one clamp of the mounting piping side jig, and the sleeve and the mounting side piping, which are mounted on the tip of the mounting straightening bolt, are pressed to the other clamp. And a plurality of groove spacing adjusting bolts for connecting the sleeve and the mounting side pipe and for adjusting the insertion amount of the sleeve and the mounting side pipe, and the sleeve. A groove aligning device for pipes, comprising a centering bolt for adjusting the axial center positions of the pipe and the mounting side pipe.