JPH09248695A - Automatic welding equipment for ring seam of funnel cylinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate shifting relocation of welding machines to a lower tunnel cylinder by welding the ring joint of each step in the cylinder after the temporary assembling erection of the full height of the funnel cylinder. SOLUTION: With a gondola 1 attached inside a tunnel cylinder temporarily assembled and erected to the full height, the gondola is lowered to the height at which the torch 10 of an automatic welding machine 6 on the gondola is nearly as high as the uppermost ring seam joint 42. With the levelness monitored by its detecting means 8, a levelness adjusting means 9 is adjusted to be pressed against the inner face of the cylinder 31a, 31b, so that the gondola 1 is adjustably held horizontally. Through this operation, a ring-shaped guide rail 5 is made parallel to the joint 42. Then, the joint 42 is welded by the welding machine 6. After the welding, with the levelness adjusting means 9 operated in a slightly pulled-in state, the gondola 1 is brought down to a lower joint 42, similarly repeating the procedure and welding the lowermost joint 42 in the tunnel cylinder. Thus, without conventional welding for each extension of the cylinder block, the construction period is greatly reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for automatically welding ring seams between cylinder blocks at a chimney cylinder construction site.

[0002]

2. Description of the Related Art FIG. 6 is an explanatory view of a conventional chimney barrel construction method, and FIG. 7 is a perspective view of a barrel ring seam joint portion used for joining the chimney barrel blocks in the above method.
[Fig. 3] is a sectional view of the joint portion.

In FIG. 6, 30 is a support tower for supporting the chimney tube body 31, 32 is a temporary beam provided above the support tower 30,
33 is a lifting device provided on the temporary beam 32, and 34 is a suspending member for lifting the barrel that has one end connected to the upper end of the upper barrel block 31a of the chimney in the process of being installed and the other end engaged with the lifting device 33. Is. The upper cylinder block 31a of the chimney cylinder is hung through the hanging member 34 and the lifting device 33, and the lower cylinder block 31b is horizontally loaded below the upper cylinder block 31a, and the lower cylinder block is hung at the lower end of the cylinder block 31a. The upper ends of the blocks 31b are aligned, and the ring seam joint portions of the upper and lower tubular blocks are welded from the inside and integrally joined.

FIG. 7 shows the upper and lower cylindrical body blocks 31 described above.
This is a configuration of a ring seam joint portion that has been conventionally used in order to efficiently align the ring seam joint portions of a and 31b. In this configuration, the upper cylinder block 3
At the lower end edge of 1a and the upper end edge of the lower cylinder block 31a, a semicircular plate material 35 for skin-matching and backing metal is welded to the outer surface of the cylinder body in a mutually complementary arrangement. It is attached so that it projects downward or upward. The upper tubular body block 31a is hung up, and the lower tubular body block 3 is placed below it.
1b is carried in horizontally, and the upper and lower cylindrical body blocks 31a are adjusted by slightly shifting the axes of the cylindrical body blocks to mutually complementary positions of the plate materials 35 for the upper and lower facing skin-matching and backing metal plates that complement each other.
Down as indicated by arrow 36, and the lower cylinder block 31b
Is horizontally moved in the direction in which the axes are aligned as shown by the arrow 37, the upper and lower cylindrical blocks 3 are moved as shown in FIG.
The skins 1a and 31b are matched at once. The ring seam joint portion 42 is welded by welding the welded portion 43 between the protruding end of the plate material 35 for skin-matching and backing metal and the outer surface of the other tubular body block while keeping the gap between the opposing tubular body ends constant. To form.

FIG. 9 shows such upper and lower cylindrical bodies 31a, 31.
It is a block diagram of the conventional automatic welding apparatus which welds the ring seam joint part 42 of b. In the figure, 40 is a ring-shaped guide rail horizontally fixed and supported on the inner wall surface of the tubular block 31 by a plurality of magnet attraction members 40a, and 41 is engaged with the ring-shaped guide rail 40 so as to be movable. Automatic welding machine, 42a and 42b are cylinder block 31a
And 31b, and 31b and 31c are ring seam joint portions which are skin-matched and aligned via the plate material 35 for skin-skinning and backing metal.

When the upper tubular body block 31a and the lower tubular body block 31b are joined, the ring-shaped guide rail 40 is attached to the inner surface of the upper tubular body block 31a at a height position indicated by a broken line, and the ring-shaped guide rail 40 is attached. 40 is equipped with a welding machine 41 to weld the ring seam joint portion 42a between the lower end of the tubular body block 31a and the upper end of the lower tubular body block 31b, and then the lower tubular body block 31b is joined to the underlying tubular body block 31c. Sometimes, the upper welding machine 41 is removed from the ring-shaped guide rail 40, and the magnet attraction member 40a of the ring-shaped guide rail 40 is attached to the tubular block 3.
1a, and the cylinder block 31b one step lower is replaced with a predetermined height position indicated by the solid line, and the welding machine 41 is mounted on the ring-shaped guide rail 40 transferred to this height, and the lower ring is similarly moved. The welding of the seam joint portion 42b is repeated.

[0007]

In the above-described conventional ring seam welding of chimney cylinder blocks, the welding itself employs automatic welding, but each time the cylinder blocks are added,
Welder 41 and guide rail 40 must be transferred from the upper cylinder to the lower cylinder, and this transfer takes time,
There was a problem that the construction period for the barrel construction was prolonged and the cost was high.

The present invention solves the above-mentioned problems of the prior art by eliminating the transfer of the welding machine and the ring-shaped guide rail to the lower cylindrical body, and facilitates the adjustment of the alignment between the welding machine and the ring seam joint. Furthermore, the present invention is intended to provide an automatic ring seam welding device for a chimney barrel, which can shorten the construction period of the barrel.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a backing metal material for skin matching is provided on the outer side surface of the ring seam joint portion between the chimney tube blocks and the inner side thereof is provided. Weldable, after the backing metal material of one block and the outer surface of the other block are sequentially welded in the support tower provided to support the chimney barrel, and the chimney barrel is temporarily assembled in full height, In an automatic ring seam welding device for a chimney barrel used when welding a ring seam joint portion inside the chimney barrel, the chimney is provided via a hoisting rope hung on a pulley provided at an upper portion of the support tower. A gondola suspended inside the barrel so that it can be moved up and down, a ring-shaped guide rail that is horizontally provided around the gondola, an automatic welding machine that movably engages with the guide rail, and the same provided on the gondola. gondola A ring seam automatic welding device for a chimney barrel, comprising means for detecting the levelness and means for adjusting the gondola in a horizontal position by contacting the inner wall surface of the chimney barrel provided on the gondola. Is.

[0010]

FIG. 1 is a side view of a chimney barrel ring seam automatic welding apparatus according to an embodiment of the present invention.
1 is a plan view taken along the line II-II in FIG. 1, and FIG. 3 is a line III-III in FIG.
FIG. 4 is a front view of the welding machine section as viewed from the arrow, FIG. 4 is a side view of the section IV-IV of FIG. 3, and FIG. 5 is a plan view of the section V-V of FIG. In addition,
1 to 5, the same elements as those in the related art are denoted by the same reference numerals as those in FIG. 6, and detailed description thereof will be omitted.

In FIGS. 1 and 2, reference numeral 1 is a hoisting rope 2 inside the chimney cylinder body 31 temporarily erected by the procedure described later under the hoisting and lowering erection method shown in FIGS. 6 to 8. It is a gondola that is supported so that it can be moved up and down. The gondola 1 has a frame structure in which an upper beam assembly 1a and a lower beam assembly 1b in the radial direction are integrally connected by a plurality of columns 1c, a floor 3 is provided on the lower beam assembly 1b, and a handrail 3a is provided. A concentric ring-shaped guide rail 5 is fixedly provided at an intermediate height position from the upper beam assembly 1a via the support member 4.

Reference numeral 6 denotes one or a plurality of twin-arc type automatic welders which are engaged with the ring-shaped guide rail 5 and are movably provided, and 7 is welding for the automatic welder 6 provided on the floor 3. Power supply device. Illustration of cables attached to the automatic welding machine is omitted. Reference numeral 8 is a leveling means of a gondola including a level or a gyro provided at the central position of the gondola, and 9 is at least symmetrical to the beam ends of the upper and lower beam sets 1a and 1b in three or four directions (four directions in the figure). A gondola 1 equipped with a roller 9a attached to the inner wall surface of the barrel 31 at the tip thereof so that it can be expanded or contracted manually or electrically.
Is a guide roller fulcrum and horizontal level adjusting means. The guide roller fulcrum / horizontality adjusting means 9 may be configured as a pressing friction fulcrum by attaching a pressing plate instead of the roller 9a at the tip end.

3 to 5 show the detailed structure of the automatic welding machine 6. As shown in FIG. The automatic welding machine 6 has two sets of welding torches 1.
Twin arc type welder body 6 with 0a and 10b
a and two sets of welding wire feeding parts 6b connected to the left and right of the main body part 6a by a connecting tool 11. 6c is a welding wire reel of each wire feeding section 6b, and 6d is a welding wire. The main body portion 6a and the wire feeding portion 6b of the automatic welding machine 6 are movably engaged with the upper surface and the lower surface of the ring-shaped guide rail 5 via a plurality of vertical rollers 12 shown in FIGS. 3 and 4, and The ring-shaped guide rail 5 is movably engaged with and supported by both side surfaces of the ring-shaped guide rail 5 via a plurality of horizontal rollers 13. Further, the automatic welding machine 6 has a rack gear 16 in which a drive pinion 15a provided at the tip of a vertical shaft 15 driven by a motor 14 provided on the upper surface of the main body 6a is integrally provided on the opposing surface of the ring-shaped guide rail 5.
It is configured to be capable of traveling on the ring-shaped guide rail 5 at an adjusted speed by meshing with.

A pair of arc welding torches 1 of the automatic welding machine 6.
As shown in FIG. 4, 0a and 10b are configured so that the torch tip can be adjusted in the height direction, the horizontal direction toward the inner surface of the barrel, and the tilt direction, and face the inner surface of the barrel block via the copying roller 17. Further, as shown in FIG. 5, the tips of the ring seam joints 42 are horizontally provided with a small interval in the horizontal direction at a constant relative angle, and the ring seam joint portion 42 can be welded in two layers in one pass.

In this apparatus, assembling and erection of the chimney barrel body 31 is carried out, as shown in FIG. 6, below the upper cylinder body block 31a suspended by the suspending member 34 in the support tower 30 and below the lower chimney barrel block 31b. It is carried out in the manner that it is loaded horizontally and joined vertically.
The skin matching of the upper cylinder body block 31 and the lower cylinder body block 31b is performed in the same manner as in the conventional case as shown in FIGS. The joint part 43 between the skin-matching and backing metal plate material 35 and the outer surface of the other cylinder body is integrated by one-pass welding and lifted by the lifting device 30, and in the same manner, the lower cylinder block is added repeatedly in the same manner to the chimney. The entire height of the barrel 31 is temporarily assembled and installed. In this total height temporary assembled state,
Welding of the ring seam joint on the inside of the barrel, which was conventionally done when adding individual blocks, is not done.

Next, the temporarily assembled chimney barrel 31 is installed.
The gondola 1 shown in FIGS. 1 and 2 is installed therein. Welding of the ring seam joint portion 42 in the chimney barrel 31 using the gondola 1 is performed by the procedure described below. Hoisting rope 2
Is driven to lower the gondola 1, and the welding torches 10a and 10b of the automatic welding machine 6 on the gondola 1 are stopped at a height substantially matching the uppermost ring seam joint portion 42,
While monitoring the horizontality by the horizontality detecting means 8, each of the upper and lower sides
Adjusting the horizontal adjusting means 9 at the location and sending out the chimney barrel 31
The gondola 1 is adjusted horizontally and held by pressing it against the inner surface of the.
By this operation, the ring-shaped guide rail 5 for the automatic welding machine 6 on the gondola 1 becomes parallel to the ring seam joint portion 42. Then, the welding torch 10a is attached to the ring seam joint portion 42 by the torch adjusting means of the automatic welding machine 6 itself.
And the height, angle, and relative position of 10b are adjusted and aligned to perform automatic welding. Two welding torches 10a,
By 10b, welding is performed in two layers in one pass to perform the required number of layers.

Again, the horizontal adjusting means 9 at each of the upper and lower four places of the gondola 1 are slightly retracted to lower the gondola 1 to the lower ring seam joint portion 42, and the same procedure is repeated to repeat the chimney barrel body. The main welding of the ring seam joint portion 42 is subsequently completed all at once up to the ring seam joint portion 42 at the lowermost position of 31. And this ring seam joint part 4
During the welding operation of 2, outside of this barrel, this barrel 31
It is possible to carry out auxiliary work on the outer surface of, and similar temporary assembly of other chimney barrels in parallel.

That is, according to the structure of the present embodiment, in the temporary assembling of the chimney barrel, the lower barrel block is submerged by the one-pass welding between the tip of the plate member 35 and the outer surface of the barrel, and the lifting is repeated. The time for temporarily assembling the tubular body is shortened, and in welding the ring seam joint portion 42, the automatic welding machine 6 is used.
Thus, the work of relocating the ring-shaped guide rail 5 is not necessary, the position of the automatic welder 6 and the ring seam joint 42 can be easily aligned, and the welding work time can be shortened. Further, during the welding of the ring seam joint portion 42, other work such as temporary assembly and erection of other barrels can be performed in parallel, and as a result, the construction period of the chimney barrel can be greatly shortened. It will be possible.

[0019]

The automatic ring seam welding device for a chimney barrel of the present invention is suspended in the chimney barrel so that it can be moved up and down through a hoisting rope hung on a pulley provided at the upper part of the support tower. A gondola, a ring-shaped guide rail horizontally provided around the gondola, an automatic welding machine that movably engages with the guide rail, a means for detecting the levelness of the gondola provided in the gondola, and the same. Since the gondolas are provided with means for contacting the inner wall surface of the chimney barrel to adjust the gondola in a horizontal posture, the welding of the ring seam joint portion in the barrel is not performed for each addition of the barrel blocks. Instead, after the temporary stacking of the entire height of the chimney barrel, the ring seam joints at each stage in the barrel can be continuously welded as independent work. To Ukoto can, as a result, it is possible to greatly shorten the construction period of the chimney tube body construction with.

[Brief description of drawings]

FIG. 1 is a side view of a chimney barrel ring seam automatic welding device according to an embodiment of the present invention.

FIG. 2 is a plan view of the above device (a view taken along the line II-II in FIG. 1).

FIG. 3 is a front view of the welder portion of the above-mentioned apparatus (see FIG. 2).
III-III arrow view).

FIG. 4 is a side view of the welder portion of the above device (see FIG.
IV-IV cross-section arrow view).

FIG. 5 is a plan view of a welding torch portion in the above device (FIG. 4).
V-V cross-section arrow view).

FIG. 6 is an explanatory view of a conventional chimney barrel building method.

FIG. 7 is a perspective view of a tubular ring seam joint used for joining the chimney tubular blocks to each other in the above method.

FIG. 8 is a cross-sectional view of the tubular ring seam joint portion.

FIG. 9 is a configuration diagram of a conventional automatic welding device for welding a ring seam joint portion.

[Explanation of symbols]

1 Gondola 2 Winding rope 3 Gondola floor 3a Handrail 4 Support material 5 Ring-shaped guide rail 6 Automatic welder 6a Welder body 6b Wire feeder 6c Wire reel 6d Welding wire 7 Welding power supply device 8 Gondola horizontal level detection Means 9 Guide roller fulcrum / horizontal degree adjusting means 10a, 10b Welding torch 11 Connecting tool 12 Vertical roller 13 Horizontal roller 14 Motor 15 Vertical shaft 15a Pinion 16 Rack gear 17 Copying roller 30 Tube support tower 31 Tube body 31a, 31b, 31c Tube block 32 Temporary beam 33 Lifting device 34 Lifting material for lifting 35 Plate material for skin matching and backing metal 42 Ring seam joint part 43 Field welding part of projecting end of plate material 35 and external surface of cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eiichi Sato 5-1-1 Enamiokicho, Naka-ku, Hiroshima City Mitsubishi Heavy Industries Construction Hiroshima Branch Office

Claims (1)

[Claims] 1. A support tower provided to support a chimney barrel by providing a backing metal material for skin contact on the outer surface of the ring seam joint portion between the chimney barrel blocks so that the inside can be welded. Used to weld the ring seam joint part inside the chimney barrel after the back metal of one block and the outer surface of the other block are sequentially welded in the In a ring seam automatic welding device for a chimney barrel, a gondola suspended movably up and down inside the chimney barrel via a hoisting rope hung on a pulley provided at the upper part of the support tower, A ring-shaped guide rail horizontally provided around the periphery, an automatic welding machine that is movably engaged with the guide rail, means for detecting the levelness of the gondola, and the chimney provided for the gondola. An automatic ring seam welding device for a chimney barrel, which is equipped with means for contacting the inner wall surface of the barrel and adjusting the gondola in a horizontal position.