JPH0480243B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a T-shaped joint structure with perfect watertightness and airtightness.

"Prior art and its problems, etc." Conventionally, when joints formed by seam welding are seam welded as a T-shaped joint, when the plate thickness becomes particularly thick, the disk of the seam welding machine The electrode could not follow the shape of the stepped portion (see Figure 7). Therefore, it becomes impossible to weld that part, and a gap is formed. Therefore, there was a drawback that watertightness and airtightness deteriorated in that part. Further, in order to completely adhere this part, it was necessary to perform seam welding and then repair the part by spot welding or the like.
For this reason, the work is extremely troublesome, which is one of the causes of lower work efficiency.

"Means for Solving the Problems" Therefore, as a result of intensive research in order to solve the above-mentioned problems, the inventors have developed the present invention. The rising parts are seam-welded to each other to form a first joint part, one end of this first joint part is bent onto the main plate, and the other end of the main plate is raised together with this bent part to form a second rising part. The second rising part and the rising part formed at one end of the main plate of another rustless steel plate material are overlapped, and the second rising part at the bending and overlapping part is press-worked to form a flat pressured part. The second rising part and the rising part are seam welded, and the second joint part is formed by seam welding continuously at the pressurized part to create a T-shaped joint structure, which provides perfect watertightness. This ensures airtightness and solves the above problems.

"Embodiment" An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Reference numerals 1 and 1 are stainless steel plates having a thickness that allows seam welding, and one end of each of the main plates 1a, 1a is raised, and a first rising portion 1b, 1b is formed.
is formed. At this time, the first rising portion 1b,
1b is not immediately raised at a right angle, but is first raised at less than a right angle (steeply inclined), the upper part is formed vertically, and when superimposed, it is often formed so that a gap is created at the lower end. (See Figures 1 and 3).
First rising portion 1b, 1 of two rustless steel plates 1, 1
b are overlapped and seam welded to form an expandable first joint part A. One end of this first joint part A is bent onto the main plate 1a, and
A and 1a are raised together with the other ends to form a second rising portion 2. This second rising portion 2 is also similar to the first rising portion 2.
Like the rising portions 1b, 1b, they are first raised at a right angle or less, the upper part is formed vertically, and when they are overlapped, they are often formed so that a gap is created at the lower end.

3 is another stainless steel plate having a thickness that allows seam welding, and one end of a main plate 3a is raised to form a rising portion 3b. At this time, the rising part 3
Like the first rising portions 1b, 1b and the second rising portion 2 described above, b is first raised below a right angle,
It is often formed with a vertical top and a gap at the bottom when polymerized. The rising portion 3b of this rustless steel plate material 3 and the second rising portion 2 are overlapped.

A bent overlapping portion 2a is formed in the second rising portion 2. This bent overlapping part 2a is the first joint part A.
is the part that is bent onto the main plate 1a and raised together with the main plates 1a, 1a.

The second rising portion 2 at the bending and overlapping portion 2a is pressed to form a flat pressed portion 2b. The width of this pressurized part 2b is larger in the vertical direction than the width of the disk electrode 6 of the seam welding machine, and its longitudinal direction is formed over the entire bent and overlapped part 2a (Fig. 1). , see Figure 2). The pressing may be performed only on the second rising portion 2, or may be performed after the second rising portion 2 is superposed with the rising portion 3b of another rustless steel plate material 3.

In the experimental example of machining the pressurized part 2b, approximately 0.4 mm
At the approximately 1.5 mm thick portion of the second rising portion 2 at the bending and overlapping portion 2a formed by the stainless steel plates 1 and 1 made of stainless steel plates, there is a plate having a width of several mm and a length of approximately 3 cm.
Approximately 20 to 30 tons of pressure is applied using a press machine consisting of a pressure piece and a flat pressure part on the other side.
The second rising portion 2 at the bending and overlapping portion 2a is approximately
A pressurized portion 2b of 0.5 mm was formed.

The second rising portion 2 and the rising portion 3b thus formed are seam welded, and the pressured portion 2b is also seam welded continuously to this seam weld, and these seam welds are continuously performed. second
A second expandable joint part B is formed which includes a rising part 2 and a rising part 3b.

In the figure, 4 is a slab of a structure, 5 is a movable hanger, 5
5b is a movable tongue piece, 5c is a fixing device such as an anchor, and 6 is a disc electrode of a seam welding machine.

"Effects of the Invention" In the present invention, the first rising portions 1b, 1b formed at one end of each of the main plates 1a, 1a of the two stainless steel plates 1, 1 are seam welded to form a first joint portion A.
Then, one end of this first joint part A is bent onto the main plate 1a, and the other ends of the main plates 1a, 1a are raised together with this bent part to form a second rising part 2.
The rising portion 2 and a rising portion 3b formed at one end of the main plate 3a of another rustless steel plate material 3 are overlapped, and the second rising portion 2 at the bending and overlapping portion 2a is press-worked to form a flat pressed portion 2b. Then, the second rising portion 2 and the rising portion 3a thus formed are seam welded,
By creating a T-shaped joint structure in which the second joint part B is formed by continuous seam welding at the pressurized part 2b, firstly, watertightness and airtightness are perfect, and secondly, the seam welding There is no need for subsequent watertight repair work such as spot welding, and thirdly, the work can be done extremely easily.

To explain the above in detail, firstly, the T-shaped joint structure of the present invention allows continuous seam welding even on stepped portions that cannot be followed by the disc electrode 6 of a conventional seam welding machine. Therefore, welding can be performed continuously in one operation and a complete seal can be achieved, thereby achieving perfect watertightness and airtightness.

Second, in conventional T-shaped joint structures, welding is often not achieved at stepped portions, and therefore, watertight repair work is subsequently performed on these portions by spot welding or the like. However, in the T-shaped joint structure of the present invention, since seam welding can be performed continuously, the above-mentioned spot welding work etc. can be made unnecessary, and the work efficiency can be significantly improved.

Thirdly, in the T-shaped joint structure of the present invention, compared to the conventional T-shaped joint structure, only the work of pressing a part by press working is added in the construction process, and another member is provided. Since this is not necessary at all, there is a significant advantage that a watertight and airtight T-shaped joint structure can be constructed extremely easily and quickly.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
Fig. 1 is a perspective view of the present invention, and Fig. 2 is a - of Fig. 1.
3 is a cross-sectional view of the main part of the present invention, FIG. 4 is a perspective view of the attachment point by the movable hanger of the joint, and FIG. 5 is a plan view showing the construction process of a conventional T-shaped joint structure. It is a diagram. A...First joint part, B...Second joint part, 1, 3
...Rustless steel plate material, 1a, 3a...Main plate, 1b...
1st rising part, 2... second rising part, 2a... bending and overlapping part, 2b... pressured part, 3b... rising part.

Claims (1)

[Claims] 1 Seam weld the first rising parts formed at one end of each of the main plates of two stainless steel plates to form a first joint part, bend one end of this first joint part onto the main plate,
Raise the other end of the main plate along with this bending point and
A rising portion is formed, this second rising portion is overlapped with a rising portion formed at one end of the main plate of another rustless steel sheet material, and the second rising portion at the bending and overlapping portion is pressed to form a flat cover. A T-shape characterized in that the second rising part and the rising part are seam welded together as a pressure part, and the second joint part is formed by seam welding continuously at the pressure part. Joint structure.