KR102095655B1 - Silo container manufacturing method - Google Patents

Abstract

The present invention relates to a silo container manufacturing method, and more specifically, to a silo container manufacturing method which can maintain high quality while productivity can be improved during a process of manufacturing a silo container. According to one embodiment of the present invention, the silo container manufacturing method, in which the silo container is manufactured by circularly rolling a flat material, includes: a material preparing step; a first attaching step; a first lifting step; a deflection step; a second attaching step; a rolling step; a pressing step; a first bonding step; a circular completing step; a reinforcing step; a third attaching step; a second lifting step; and a second bonding step.

Description

SILO CONTAINER MANUFACTURING METHOD}

The present invention relates to a method for manufacturing a silo container, and more particularly, to a method for manufacturing a silo container to maintain high quality while improving productivity in the process of manufacturing a silo container.

Generally, a silo refers to a storage container for storing a large amount of goods, and the silo is formed to have an inlet at the top and an outlet at the bottom.

Here, the silo may have various shapes such as a cylindrical storage tank, a rectangular storage tank, a hexagonal storage tank, and an octagonal storage tank according to the external shape.

In addition, the silo has a larger storage capacity than a warehouse, is designed with a structure that is easy to store and take out, and has a structural feature that minimizes deterioration of contents.

Accordingly, the silo is for storage of various items such as grain storage, feed storage in the livestock industry, and raw material storage in the heavy industry, for example, semi-finished raw materials, cement, ore, fertilizer, salt, sawdust, wood chips, sludge, etc. Is being used as

That is, the silo (silo) is a container for storing the powder in a scattered state, the storage tank of an upright cylindrical shape is representative, there is also a polygonal shape, and there are also single and several to dozens of aggregates.

In particular, the silo (silo) is a typical structure of an upright cylindrical shape, but is generally produced in a cylindrical shape by rolling a plate type, and as shown in FIG. 1, it has to be divided into pieces, which is cumbersome and accurately circular. Not only was it difficult to achieve, there was a very inconvenient problem to mold.

Korean Patent Registration No. 10-0594618, the title of the invention "Silo wall plate manufacturing method" (Registration date 2006.06.21.)

The present invention was created to solve the above-mentioned problems, and provides a method for manufacturing a silo container capable of maintaining high quality while improving productivity by using a self-weight of a silo container material in a process of manufacturing a silo container. have.

In order to achieve the above object, the method of manufacturing a silo container according to an embodiment of the present invention relates to a manufacturing method of manufacturing a flat material by rolling it in a circle, and (a) a rectangular plate having a predetermined thickness relatively longer than the width. (plate), a material preparation step of preparing the material having the same two diagonal lengths; (B) a first attaching step of attaching a plurality of first padeyes to the upper surface of the material corresponding to a position symmetrically a predetermined distance from the center of the material; (C) a first lifting step of lifting the sling belt into a first chain block by inserting a sling belt symmetrically left and right on the plurality of first pad eyes; (D) sagging step in which both ends are drooping downward due to self-weight as the material is spaced upward from the ground as the first chain block rises; (E) a second attachment step of attaching a pair of second pad eyes to the lower surface of the material, which enters a predetermined distance from both ends of the material; (F) a curling step of connecting the pair of second pad eyes with a second chain block and pulling them inward so that both ends of the material curl and meet; (G) a pressing step of naturally pressing both ends of the material by its own weight while lowering the first chain block at the time when both ends of the material meet so that both ends of the material touch the ground; (A) a first bonding step of attaching a straight auxiliary plate connecting the inner ends of both ends of the material, vertically standing the material, and then bonding both ends of the material; (I) The first and second pad eyes, and the auxiliary plate are removed, and the steps (a) to (a) are repeatedly performed to make the material a hollow cylindrical first to nth circular member (n is A circular completion step completed with a natural number of 2 or more and 10 or less); (J) a reinforcing step of reinforcing the C-shaped member along the outer periphery of the upper edge of the first circular member to secure the roundness and support strength; (K) a third attachment step of attaching a plurality of lugs for lift to the outside of the rim of the U-shaped member; (L) a second lifting step of lifting the first circular member by lifting the first circular member to a first chain block by inserting a sling belt symmetrically left and right on the plurality of lugs; And (wave) a second bonding step of sequentially connecting the first to n-th circular members up and down by joining the second to n-th circular members sequentially below the first circular member; , The first and second pad eyes, the auxiliary plate is characterized by attaching by PJP (partial joint penetration) welding.

According to the present invention, there is an advantage that can be formed into a circular shape by pressing both ends naturally with the weight of the material.

In addition, there is an advantage that can naturally increase the roundness by molding by self-weight.

In addition, since the flat material is manufactured by rolling in a circle, there is an advantage that the size is limited.

In addition, since it is manufactured in a multi-stage cylindrical shape, there is an advantage that the height of the silo container is limited.

In addition, there is an advantage that can solve the size limitation of the silo container, which has not been solved with a conventional bending device (bending machine).

1 is a view showing a silo (silo) by a conventional method of manufacturing a silo.
2 is a block diagram showing a method of manufacturing a silo container according to an embodiment of the present invention.
3 to 14 are views illustrating a method of manufacturing a silo container according to an embodiment of the present invention.

First, prior to describing the present invention in detail, the present invention is not intended to be limited to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle.

The terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “include” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and that one or more other features are present. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

In addition, terms such as “… unit”, “… unit”, and “… module” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. You can.

In addition, the components of the embodiments described with reference to the drawings are not limited to the embodiments, and may be implemented to be included in other embodiments within the scope of maintaining the technical spirit of the present invention. Although the description is omitted, it is natural that a plurality of embodiments may be reimplemented as one integrated embodiment.

In addition, in the description with reference to the accompanying drawings, the same components, regardless of reference numerals, are assigned the same or related reference numerals, and redundant description thereof will be omitted. In the description of the present invention, when it is determined that detailed descriptions of related known technologies may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

In addition, in the drawing, there is a part in which the size ratio between elements is expressed somewhat differently, or there is a part in which sizes between parts that are combined with each other are expressed differently, but the difference in the expressions shown in the drawings is easy for those skilled in the field. Since it is understandable parts, a separate description is omitted.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The present invention has been described with reference to the embodiment shown in the drawings, but this is described as one embodiment, whereby the technical spirit of the present invention and its core configuration and operation are not limited.

The present invention relates to a method for manufacturing a silo container that can maintain a high quality and improve productivity in a process of manufacturing a silo container, typically a silo container is a structure of an upright cylindrical shape, but is a flat type material To produce a rolled in a cylinder, as shown in Figure 1, it should be produced by dividing into pieces in the prior art, and it was created to solve problems such as difficulty in forming a circular shape accurately and inconvenient and cumbersome.

In particular, conventionally, a flat type material is rolled up with a bending machine to manufacture a silo container, but there is a limitation in that it is easy to fabricate easily due to high manufacturing cost and inconvenient handling of a large size.

2 is a block diagram showing a method of manufacturing a silo container according to an embodiment of the present invention, and FIGS. 3 to 14 are views illustratively illustrating a method of manufacturing a silo container according to an embodiment of the present invention to be.

Referring to the drawings, the method for manufacturing a silo container according to an embodiment of the present invention (S100) relates to a manufacturing method for manufacturing a flat material by rolling in a circle,

(A) a material preparation step (S101) of preparing the material 110 having two diagonal lengths L1 and L2, which are rectangular plates having a predetermined thickness relatively longer than the width; (B) a first attachment step (S102) of attaching a plurality of first padeyes 210 to the upper surface of the material 110 corresponding to a position symmetrical at a predetermined distance from the center of the material 110; (C) a first lifting step of lifting the sling belt 350 into the first chain block 310 by inserting a sling belt 350 symmetrically left and right on the plurality of first pad eyes 210 ( S103); (D) sagging step (S104) of both ends are sag downward due to self-weight as the material 110 is spaced upward from the ground according to the rise of the first chain block 310; (E) a second attachment step (S105) of attaching a pair of second pad eyes 220 to the lower surface of the material 110 entering a predetermined distance from both ends of the sag 110; (F) a curling step (S106) by connecting the pair of second pad eyes 220 with a second chain block 320 and pulling them inward so that both ends of the material 110 are curled together; (G) At the time when both ends of the material 110 meet, the first chain block 310 is lowered so that both ends of the material 110 touch the ground, and both ends of the material 110 are self-weighted ( A pressing step of naturally pressing by self-locking (S107); (A) A first bonding step of attaching a straight auxiliary plate 230 connecting the inner ends of both ends of the material 110, vertically standing the material 110, and then bonding both ends of the material 110 (S108) ); (I) The first and second pad eyes 210 and 220, and the auxiliary plate 230 are removed, and the steps (a) to (a) are repeatedly performed to make the material 110 a hollow cylindrical shape. A circular completion step completed with the first to nth circular members (n is a natural number of 2 or more and 10 or less) (F110, F111, F112, ....) (S109); (J) a reinforcement step (S110) of reinforcing the C-shaped member 115 along the outer periphery of the upper edge of the first circular member F110 to secure the roundness and support strength; (K) a third attachment step (S111) of attaching a plurality of lugs 240 for lift to the outside of the edge of the U-shaped steel member 115; (B) a plurality of lugs (lug) (240) to the left and right symmetrical sling belt (sling belt) 350 by inserting the first chain block 310 to raise the first circular member (F110) 2 lifting step (S112); And (w) the first to nth circular members F110, ... by sequentially entering the second to nth circular members F111, ..., F120 under the first circular member F110. , F120) the second bonding step (S113) to connect by connecting up and down (Up and Down).

Also, the first and second pad eyes 210 and 220 and the auxiliary plate 230 are attached by PJP (partial joint penetration) welding.

In addition, the n-th circular member (F120) further includes a lower bonding step (S114) of joining the lower member (C110) of a cone shape (cone) narrowing down.

In addition, the first and second pad eyes 210 and 220 and the lugs 240 are formed with through holes to facilitate fastening with the ends of the sling belt 250.

Then, the method for manufacturing a silo container according to an embodiment of the present invention with reference to the drawings (S100) in detail as follows.

The present invention relates to a manufacturing method of manufacturing a flat material by rolling it in a circle, and a large-sized silo container capable of storing raw materials for semi-finished products, cement, ore, fertilizer, salt, sawdust, wood chips, sludge, etc. It was completed to produce economically and effectively.

1. Material preparation stage (S101)

The material preparation step (S101) is a step of preparing the material 110 so that the two diagonal lengths L1 and L2 are the same as a rectangular plate having a predetermined thickness relatively longer than the width.

That is, the material 110 can be purchased in a roll unit, but by cutting, as shown in FIG. 3, a rectangular plate having a predetermined thickness relatively longer than the width, and the two diagonal lengths are the same. To prepare a plurality.

At this time, if the horizontal length is 2M, the vertical length is W, and two diagonal lines L1 and L2,

로, 본 발명에서 제안하는 소재(110)는 대각선 치수 L1, L2가 매우 중요하고 반드시 동일하게 치수가 준수되어야 차후 똑바른 원기둥 형상을 구현하는 데 문제없다.L1 = L2 =

As the material 110 proposed in the present invention, the diagonal dimensions L1 and L2 are very important and the same dimensions must be observed, so that there is no problem in implementing a straight cylindrical shape later.

2. First attachment step (S102)

The first attachment step (S102) is a step of attaching a plurality of first padeyes 210 to the upper surface of the material 110 corresponding to a position symmetrical to a predetermined distance from the center of the material 110.

The first attachment step (S102) is a plurality of flat material 110 to the upper surface of the flat material 110 in order to lift the relatively long material than the width of the flat material 110 to the chain block (chain block) 310 as shown in Figure 4 (a). Attach the first pad eye (210).

In addition, the plurality of first pad eye 210, as shown in Figure 4 (b), corresponds to a position (n1) that is a predetermined distance symmetrical in the center of the material 110, the predetermined width (n1 / 2) entered It is attached to the top surface of the material 110.

Here, since the first pad eye 210 is not directly engaged with the chain block, but is lifted through the intervention of a sling belt in the middle, the first pad eye 210 is engaged with the end of the sling belt 350 To facilitate this, as shown in Fig. 4 (c), a through hole is formed.

In addition, the first pad eye 210 is attached by PJP (partial joint penetration) welding to facilitate removal later, as shown in Fig. 4 (c).

For reference, PJP (partial joint penetration) welding is a method of partially welding for easy removal later, and refers to partial joint welding.

Particularly, in the first attachment step (S102) proposed by the present invention, after the first pad eye 210 is PJP welded to the material 110, a non-destructive test (NDE) including magnetic particle inspection (MT) and visual check is performed. To ensure stability.

3. First lifting step (S103)

The first lifting step (S103) is a step of lifting the sling belt 350 into the first chain block 310 by inserting a sling belt 350 symmetrically left and right on a plurality of first pad eyes 210. to be.

The first lifting step (S103), as shown in FIG. 5, inserts one end of the sling belt 350 into the through hole of the first pad eye 210, which is symmetrical in the center of the material 110, to the first chain block ( 310 to lift the material 110 above a predetermined height (h).

For reference, a sling belt refers to a web element that is sewn to attach cargo to a crane hook or other hoisting device. It is widely used in shipyards and unloading sites to prevent slipping or product damage, such as steel pipes and stainless steel. In addition, it is lighter than a wire rope or chain, easy to handle, and excellent in flexibility.

4. Sag phase (S104)

The deflection step (S104) is a step in which both ends are drooped downward by self-weight as the material 110 is separated from the ground and spaced upward as the first chain block 310 rises.

For example, as shown in (a) of FIG. 5, when the predetermined height h, angle 30 degrees, and lifting starts, the thin material 110 starts to sag at both ends due to its own weight.

That is, in the deflection step (S104), as shown in FIG. 5 (b), the material 110 is lifted by a predetermined height (h) or more according to the rise of the first chain block 310, and the ground surface ), Spaced apart from the height upwards, and both ends droop downward by self-weight.

5. Second attachment step (S105)

The second attachment step (S105) is a step of attaching a pair of second pad eyes 220 to the lower surface of the material 110 at a position d that enters a predetermined distance from both ends of the material 110.

That is, in the second attachment step (S105), as shown in FIG. 6 (a), when the flat material 110 is pulled up to the first chain block 310, both ends of the material 110 are drooped and drooped. A pair of second pad eyes 220 are attached to the lower surface of the material 110 at a position d that enters a predetermined distance from both ends.

In particular, in the case of attaching a pair of second pad eyes 220 under the material 110, it is essential to proceed after installing a safety support in preparation for the fall of the material 110.

On the other hand, the second pad eye 220 is formed with a through hole to be fastened with a chain block.

In addition, the second pad eye 220 is attached by partial joint penetration (PJP) welding to facilitate removal later.

For reference, PJP (partial joint penetration) welding is a method of partially welding for easy removal later, and refers to partial joint welding.

6. Curl step (S106)

The curling step S106 is a step of connecting the pair of second pad eyes 220 with the second chain block 320 and pulling them inward so that both ends of the material 110 are curled together.

As shown in FIG. 6, the curling step S106 is performed on the pair of second pad eyes 220 in the order of (a)-> (b)-> (c)-> (d) of FIG. 6. It is connected to the chain block 320 and pulled inward so that both ends of the material 110 are forcibly dried.

Here, the material 110 is sagging downward by its own weight as the sling belt 350 is raised at both ends as shown in FIG. 6 (a), and as the second chain block 320 as shown in FIG. 6 (b). It is connected and pulled inward, and both ends of the material 110 are dried as shown in FIG. 6 (c), and both ends of the material 110 are met in a circle as shown in FIG. 6 (d).

7. Compression stage (S107)

In the pressing step (S107), the first chain block 310 is lowered at the time when both ends of the material 110 meet, so that both ends of the material 110 touch the ground, and both ends of the material 110 are self-weighted. This is the step of naturally pressing by (自重).

In the pressing step (S107), when the first chain block 310 is lowered at the time when both ends of the material 110 meet, as shown in FIG. 7 (a), both ends of the material 110 touch the ground. , As shown in (b) of FIG. 7, when both ends of the material 110 are gradually placed on the ground and completely touched, so that there is no upward force of the first chain block 310, the material is determined by the weight of the material 110 ( Both ends of 110) are naturally pressed and pressed.

In addition, the pressing step (S107), as shown in Fig. 7 (b), before the ends of the material 110 completely contact the ground, the portion protruding downward sharply is gently pressed to form a circle.

8. First bonding step (S108)

The first bonding step (S108) is a step of attaching a straight auxiliary plate 230 connecting the inner ends of both ends of the material 110, vertically standing the material 110, and then bonding both ends of the material 110. .

In the first bonding step (S108), as shown in FIG. 8, each of three straight auxiliary plates 230 inside the both ends of the material 110 is partly jointed to PJP so that both ends of the material 110 are firmly connected. penetration) by attaching, vertically erecting the material 110, and then bonding both ends of the material 110.

9. Circular completion step (S109)

In the circular completion step (S109), the first and second pad eyes 210 and 220, and the auxiliary plate 230 are removed, and steps S101 to S108 are repeatedly performed to make the material 110 a hollow cylindrical first shape. It is a step to complete with the n-th circular member (n is a natural number of 2 or more and 10 or less) (F110, F111, F112, ....).

As shown in FIG. 9, the circular completion step (S109) removes the first and second pad eyes 210 and 220, and the auxiliary plate 230 to clean the surface and grind the surface to form a hollow cylindrical shape. 1 Complete the circular member (F110).

Particularly, in the circular completion step (S109), steps S101 to S108 are repeatedly performed to complete the hollow cylindrical first to nth circular members F110, F111, F112, ...., F120, n is a natural number of 2 or more and 10 or less, and n is described as 5 as one example of the present invention.

However, in the present invention, n is limited to a natural number of 2 or more and 10 or less, but when the vertical size of the silo container 100 is enlarged, it may exceed 10.

That is, in order to clarify the present invention, n is a natural number of 2 to 10 natural numbers, and when the upper and lower sizes of the silo container 100 are expanded, n may exceed 10.

10. Reinforcement step (S110)

The reinforcing step (S110) is a step of securing the roundness and support strength by reinforcing the C-shaped member 115 along the outer periphery of the upper edge of the first circular member F110.

In the reinforcement step (S110), as shown in FIG. 10, the first circular member (F110) is reinforced with a c-shaped member (channel) member 115 along the outer periphery of the upper rim to secure the roundness and support strength.

Here, the C-shaped member (channel) member 115 has a circular ring shape with a roundness guaranteed through a bending machine, and forms a strong support frame of the C-shaped steel to reinforce the upper edge of the first circular member (F110) do.

In addition, the C-shaped member (channel) 115 is joined by a seal weld along the outer periphery of the upper edge of the first circular member F110.

11. Third attachment step (S111)

The third attachment step (S111) is a step of attaching a plurality of lugs 240 for lifts outside the rim of the c-shaped steel member 115 of the first circular member F110.

In the third attachment step (S111), as shown in FIGS. 11 and 12, a plurality of lugs 240 for a lift are attached to the outside of the rim of the c-shaped steel member 115 of the first circular member F110. In order to facilitate the subsequent work, the first circular member F110 is easily lifted to the first chain block 310 by inserting one end of the sling belt 350 into the lug.

In addition, the lug 240 is formed with a through-hole to facilitate fastening with the end of the sling belt 350, and may be attached to a predetermined distance n2 that is symmetrical to the left and right relative to the circular center as shown in FIG. .

In addition, the lug 240 may be attached by PJP (partial joint penetration) welding.

12. Second lifting step (S112)

In the second lifting step (S112), the first circular member (F110) is lifted to the first chain block (310) by inserting a sling belt (350) symmetrically to the plurality of lugs (240). It is a lifting step.

The second lifting step (S112), as shown in (a) of Figure 13, a plurality of lugs (lug) (240) to the left and right symmetrically by inserting the sling belt 350 to raise the first chain block (310) The first circular member (F110) is lifted to join the second, ..., nth circular members (F111, ...., F120) up and down according to the number of ns.

Here, the n-th circular member F120 is located where the cylindrical shape of the silo container 100 ends.

For example, if n is 5, the fifth circular member F120 is positioned at a portion where the cylindrical shape of the silo container 100 ends.

13. Second bonding step (S113)

The second joining step (S113) sequentially enters the second to nth circular members (F111, ..., F120) under the first circular member (F110) to form the first to nth circular members (F110, .. ., F120) is a step of connecting up and down to connect.

The second bonding step (S113), as shown in (b), (c) of FIG. 13, the second to nth circular members (F111, ..., F120) below the first circular member (F110) By sequentially entering and joining the first to nth circular members F110, ..., F120 by connecting them up and down, for example, when n is 5, while raising the first circular members F110, The second to fifth circular members (F111, ..., F114) are sequentially entered under the first circular member (F110) to be joined by a seal weld up and down.

At this time, in the case of sealing welding, the welding operation must be continued without interruption.

However, if necessary, the second bonding step (S113) is the first to n-th circular members (F110, ..., F120), respectively, the upper and lower mutually sealed weld (seal weld), PJP welding and TJP (typical joint penetration) You can choose between welding.

14. Lower bonding step (S114)

The lower bonding step (S114) is a step of bonding the lower member C110 having a cone shape narrowed downward to the lower portion of the n-th circular member F120.

The lower bonding step (S114) is to join the lower member (C110) of a cone shape (cone) narrowing down to the lower portion of the n-th circular member (F120), as shown in Figure 13 (c), for example For example, if n is 5, the lower member C110 is entered under the fifth circular member F114 to be joined by a seal weld up and down.

However, if necessary, the lower bonding step (S113) selects one of the n-th circular member (F120) and the lower member (C110) between the upper and lower sealing welds (seal weld), PJP welding and TJP (typical joint penetration) welding. You can.

15. Container completion stage (S115)

Container completion step (S115) is a first to n-th circular member (F110, ..., F120), and the lower member (C110) is bonded to the top and bottom (up and down), but the silo container 100 that can receive the contents inside ).

The container completion step (S115), as shown in Figure 14, the first to n-th circular member (F110, ..., F120), and the lower member (C110) by bonding the contents up and down (up and down) to the inside Complete the silo container 100 that can be accommodated.

For example, if n is 5, the silo container 100 including the first to fifth circular members F110, ..., F114, and the lower member C110 is completed.

16. Transport and installation steps (S116)

The transport and installation step (S116) is a step in which the silo container 100 is seated and mounted on a mounting frame to transport and install the silo container 100.

As shown in Figure 14, the transport and installation step (S116), when completing the silo container 100 that can accommodate the contents therein, is moved to a space to be installed by using a moving means and seated on the mounting frame, and the silo The container 100 is installed.

Therefore, the silo container manufacturing method (S100) according to an embodiment of the present invention can be expected the following effects.

According to the present invention, there is an advantage that can be molded into a circular shape by pressing both ends naturally with the weight of the material 110.

In addition, there is an advantage that can naturally increase the roundness by molding by self-weight.

In addition, since the flat material 110 is rolled in a circular shape, there is an advantage of being limited in size.

In addition, since it is manufactured in a multi-stage cylindrical shape, there is an advantage that the height of the silo container is limited.

In addition, there is an advantage that can solve the size limitation of the silo container, which has not been solved with a conventional bending device (bending machine).

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains can make various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. will be.

Therefore, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention, but to explain the scope of the technical spirit of the present invention. .

The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

100: Silo container proposed by the present invention
110: material
115: U-beam member
F110: first circular member
C110: lower member

Claims (3)

In the method of manufacturing a silo container for manufacturing a flat material by rolling in a circle,
(A) a material preparation step of preparing the material having two diagonal lengths of a rectangular plate having a predetermined thickness relatively longer than the width;
(B) a first attaching step of attaching a plurality of first padeyes to the upper surface of the material corresponding to a position symmetrically a predetermined distance from the center of the material;
(C) a first lifting step of lifting the sling belt into a first chain block by inserting a sling belt symmetrically left and right on the plurality of first pad eyes;
(D) sagging step in which both ends are drooping downward due to self-weight as the material is spaced upward from the ground as the first chain block rises;
(E) a second attachment step of attaching a pair of second pad eyes to the lower surface of the material, which enters a predetermined distance from both ends of the material;
(F) a curling step of connecting the pair of second pad eyes with a second chain block and pulling them inward so that both ends of the material curl and meet;
(G) a pressing step of naturally pressing both ends of the material by its own weight while lowering the first chain block at the time when both ends of the material meet so that both ends of the material touch the ground;
(A) a first bonding step of attaching a straight auxiliary plate connecting the inner ends of both ends of the material, vertically standing the material, and then bonding both ends of the material;
(I) The first and second pad eyes and the auxiliary plate are removed, and the steps (a) to (a) are repeated to make the material a hollow cylindrical first to nth circular member (n is A circular completion step completed with a natural number of 2 or more and 10 or less);
(J) a reinforcing step of reinforcing the C-shaped member along the outer periphery of the upper edge of the first circular member to secure the roundness and support strength;
(K) a third attachment step of attaching a plurality of lugs for lift to the outside of the rim of the U-shaped member;
(L) a second lifting step of lifting the first circular member by lifting the first circular member to a first chain block by inserting a sling belt symmetrically left and right on the plurality of lugs;
And (wave) a second joining step in which the second to nth circular members are sequentially entered under the first circular member to connect and connect the first to nth circular members up and down. ,
The first and second pad eye, the auxiliary plate is a method of manufacturing a silo container, characterized in that attached by PJP (partial joint penetration) welding. According to claim 1,
A method of manufacturing a silo container further comprising a lower bonding step of bonding a lower member of a cone shape narrowed down to the lower portion of the n-th circular member. According to claim 1,
The first and second pad eye and lug is a method for manufacturing a silo container, characterized in that a through hole (hole) is formed to facilitate fastening with the end of the sling belt (sling belt).

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