JPS5835074A - Method and device for manufacturing and assembling cylindrical steel plate cell - Google Patents

Abstract

PURPOSE:To assemble a cylindrical metallic plate cell safely at a low cost by supporting metallic plates from the lower side in such a way that the plates deflect in vertical directions by gravity at prescribed curvature to form segmental pieces of prescribed shapes and butting and joining the segmental pieces. CONSTITUTION:Plural pieces of supporting frames 3 are erected on a base frame 2 in such a way that the central part is low and that the height increases gradually toward the end parts in the width direction. Receiving plates 4 are mounted freely oscillatably in the top end parts of the frames 3. When a metallic plate of a rectangular plate shape is placed on the frames 3, the plate deflects by gravity and assumes an arc shapes of prescribed curvature. Reinforcing ribs 8 are welded to the plate in its width direction and if necessary jigs 9 for preventing deformation thereto, whereby a segmental piece 6 is formed. The end parts in the width direction of the plural pieces 6 are butted and arranged in a cylindrical shape, then the pieces are tentatively fixed by means of wire ropes 11. Further the butt parts of the adjacent pieces 6 are welded, whereby the steel plate cell is manufactured easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing and assembling a cylindrical steel cell and an apparatus therefor.

Conventionally, when manufacturing this type of cylindrical steel plate cell, a rectangular metal plate of an appropriate size is bent with a predetermined bend using a roll bender, etc., and the circle of the cylindrical steel plate cell to be manufactured is determined from the bent metal plate. They are joined one by one by welding or the like in the circumferential direction and the vertical direction, and reinforcing ribs are attached to the inside as necessary (see Fig. 10). However, with this method, rectangular metal plates are bent with a roll bender and then welded one by one, which not only makes it extremely difficult to automate welding, but also increases the number of man-hours and increases production costs. There are many disadvantages.

Furthermore, as the size of the cylindrical steel plate cell increases, the size of the work scaffolding also increases, and work at heights increases, making the work more dangerous.

Furthermore, when repairing a steel plate cell by attaching multiple reinforcing ribs to the inner surface of the steel plate cell, it is necessary to perform the above work after joining each metal plate one by one into a cylindrical shape, which requires work at heights. This increases the number of beam welds and upward welds, significantly reducing work efficiency.

This invention was proposed in view of the above circumstances, and the divided pieces of the steel plate cell are manufactured without using a roll pender.
Furthermore, by automating the joining of the divided pieces by welding, work is simplified and manufacturing costs are reduced, and work at high places is minimized to improve work safety. The method for manufacturing and assembling a cylindrical steel plate cell according to the present invention is to bend a metal plate that constitutes one circumferential surface of the cylindrical copper plate cell to be manufactured over the entire height of the steel plate cell in the vertical direction at a predetermined curvature due to its own weight. The metal plate is supported from the bottom side and sagged as shown in FIG. It is something to be manufactured. Further, in the split piece manufacturing apparatus according to the present invention, the base frame and the metal plate to be placed are successively changed in height in the width direction of the metal plate so as to correspond to the circumference of the steel plate cell to be manufactured. It consists of a plurality of upright support frames.

Hereinafter, the present invention will be explained with reference to an illustrated embodiment.

A manufacturing apparatus 1 for manufacturing split beads for steel plate cells according to the present invention includes a pace frame 2, a plurality of support frames 3,...
It is composed of. The pace frame 2 is made of shaped steel or the like and is constructed in the shape of a substantially rectangular lattice plate, and can be disassembled and assembled freely. Support frame 3,...
is made of shaped steel or the like, and is removably installed upright on the Peine frame 2. Receiving plates 4, . . ., which receive metal plates, which will be described later, are attached to the upper end portions of the support frames 3, . Further, the support frames 5, . . . have different heights in the width direction of the base frame 2 so as to correspond to the peripheral wall of the steel plate cell 5 to be manufactured.

That is, the height of the support frames 5, . Further, the heights of the support frames 3, . . . can be freely adjusted.

In such a configuration, the split beads 6 of the steel plate cell 5,
When manufacturing..., a rectangular metal plate 7 that constitutes one circumferential surface of the steel plate cell 5 to be manufactured over the entire height of the steel plate cell 5 is placed on the split bead manufacturing apparatus 1. The plate 7 is placed so that the width direction of the plate 7 corresponds to the width direction of the manufacturing device 1. The metal plate 7 placed on the manufacturing device 1 is bent at its center by a predetermined curvature due to its own weight, and has a substantially arcuate cross section. Next, reinforcing lips 8, . . . and, if necessary, deformation prevention jigs 9, . It is formed into a substantially arc shape.

In this case, before placing the metal plate 7, the support frame 3,
A split bead 6 manufactured by appropriately changing the height of...
Determine the curvature of... For example, the support frame 5 erected in the width direction of the pace frame 2,...
If the height difference between the parts is made small, the deflection of the central part of the metal plate 7 will be reduced, and the divided pieces 6,...
・The curvature of becomes smaller. Then, the divided piece 6,
The steel plate cell 5 manufactured by ... becomes large-sized. The metal plates 7, . . . may be formed into a single plate by welding a plurality of metal plates of appropriate size. Further, reinforcing ribs 10, . . . may be attached to the inside thereof as necessary.

Next, when manufacturing the steel plate cell 5, a plurality of divided pieces 6, . . . are arranged in a cylindrical shape with their widthwise ends butted against each other, and temporarily fixed with wires 11, . . Next, the butt portions between the adjacent divided pieces 6.6 are welded. Note that the deformation prevention jigs 9, . . . are removed after the steel plate cell 5 is manufactured. The entire manufacturing and assembly process described above may be performed in a factory, or may be performed in a yard near the decoration work site. Alternatively, the divided pieces may be manufactured in a factory, transported to a yard near the construction site, and the steel plate cells assembled there. As described above, the method for manufacturing and assembling steel plate cells according to the present invention involves forming a plurality of divided pieces constituting one circumferential surface of the steel plate cell to be manufactured into a cylindrical shape while abutting their widthwise ends, and When welding the abutting parts of adjacent divided pieces to each other, the joined parts extend continuously over the entire height of the steel plate cell, making it possible to automate the welding process and simplify the work. Production costs can be reduced. Further, work safety is ensured by minimizing work such as welding at high places.

Further, in the split piece manufacturing apparatus according to the present invention, the height is successively changed in the width direction of the base frame and the metal plate to be placed so as to correspond to the peripheral wall of the steel plate cell to be manufactured. Since it consists of a plurality of supporting frames, the structure is simple and the manufacturing cost is low. Furthermore, since it can be assembled and disassembled, it is easy to handle when carrying or storing.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the split piece manufacturing device, Figures 2 to 4
Similarly, FIGS. 5 to 9 are process diagrams showing the steps for assembling a steel plate cell, and FIG. 10 is a perspective view showing a conventional steel plate cell. 1. Separate piece manufacturing device, 2. Base frame,
3. Support frame, 4. Receiving plate, 5. Steel plate cell,
6...Divided piece, 7...Metal plate, 8...Reinforcement rib, 9
・・Deformation prevention jig, 10.・Reinforcement rib, 11.・Wire.

Claims (1)

[Scope of Claims] 1. A cylindrical steel plate cell manufactured in a method for manufacturing and assembling a cylindrical steel plate cell in which a plurality of metal plates are bent at a predetermined curvature and the bent metal plates are joined into a cylindrical shape. A metal plate constituting the entire circumference of the steel plate cell is supported from below so that it bends in the vertical direction at a predetermined curvature due to its own weight, and the bent metal plate is formed into that shape. production of a cylindrical steel plate cell, characterized in that the split pieces are made into split beads of the cylindrical steel plate cell, the split pieces are temporarily assembled while abutting their width direction ends, and the abutted portions of the temporarily assembled split pieces are joined. Assembly method. 2. It consists of a base frame and a plurality of support frames erected on the base frame at different heights so as to correspond to the peripheral walls of the steel plate cells manufactured in the width direction of the metal plate to be placed. Features a split bead production device.