JP2599302B2 - Container interior bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is provided inside a general-purpose container provided with an opening / closing door for loading / unloading cargo at a rear portion, and is provided with a granular or powdery form of grains or the like. The present invention relates to an interior bag for a container used for bulk loading of cargo.

[Conventional technology and its problems] In general, when transporting granular or powdered cargo such as industrial raw materials, dedicated containers are used. Since it is not suitable for transportation, it will be returned to the shipping place empty. For this reason, transportation using a dedicated container naturally increases in cost. In recent years, general-purpose containers have come to be used for the transportation of granular and powdery materials, which are transported without special dangers like general cargo, such as grain.

When a general-purpose container is used, an interior bag made of a sheet having the same shape is suspended inside the container to seal the cargo, and the cargo is stored in the bag. Usually, when grains such as wheat are loaded, the method of loading is done by opening the rear opening of the container and blowing it in from the input port provided in the upper half of the back of the bag. When it reaches the rear, it bulges out of the opening due to its weight, and the bag itself cannot support it. In addition, the door that expands in this manner cannot be closed. Therefore, conventionally, as shown in FIG. 7, a plurality of support bars 3 are provided horizontally at appropriate intervals in the rear opening 2 of the container 1 so as to suppress the bulging of the bag rear surface 4. I have to.

However, the supporting method by the laterally provided support bar 3 is that the sheet bag is simply provided by suspending and supporting the four sides inside the container, and a margin on the rear surface facing the rear opening is also provided in advance. There is a problem that even if many support bars are laid sideways, a part of the rear surface bulges out from between the support bars and cannot be completely used. Of course,
Although it is possible to reduce this by reducing the spacing between the support bars, it is time-consuming to set up using a large number of support bars, which increases the cost of equipment, and the more serious problem is the load. When unloading, the support bar becomes an obstacle and hinders quick unloading operation. That is, when transporting grain logistics using general-purpose containers,
A method of loading and loading a large amount of grain, ranging from 10 to 30 tons, from a silo within a few minutes (usually about 3 to 5 minutes) is adopted. A method in which the lower part of the rear surface of the bag is cut in a horizontal direction with a cutter while being held in a backwardly inclined posture, and the cargo is let down at once by flowing out from the cut opening is adopted. For this reason, as described above, when a large number of support bars are used, the support burger is naturally provided laterally at the lower part where the amount of load is highest, so that there is no place for providing a slit, and Even if it is not opened enough,
This causes a problem that a lot of time is required for the unloading operation.

[Object of the Invention] The present invention has been made in view of the swelling of the rear surface portion, which is a problem in the handling of interior bags for conveying powder and granular cargo used in such general-purpose containers, and has been studied to effectively avoid this. It was developed. In particular, the present invention does not provide sufficient swelling prevention measures depending on the support bar used to suppress the swelling of the rear surface of the interior bag, and the use of this support bar hinders the removal of cargo, and It is an object of the present invention to propose a new interior bag for a container which has been made in order to improve these in view of an increase in transportation cost.

[Means for Solving the Problems] The present invention has been developed based on the object of the present invention described above.
The feature is that a tension assisting sheet-like body is juxtaposed along the rear side outer surface of the main body of the interior bag suspended and mounted inside the container, and the tension of the tensioning auxiliary sheet-like body causes the back main body to tension. The purpose of the present invention is to prevent the rear surface portion from bulging.

More specifically, the tensioning auxiliary sheet-like body provided along the outer surface of the rear surface of the back main body has left and right insertion pieces at least on both side edges, and is provided on both sides of the bag main body suspended and equipped inside the container. Using the weight pressure of the cargo accumulated by loading the cargo along the outer surface of the surface, the inserted piece is sandwiched between the side surface of the bag and the inner surface of the container side wall, and the frictional force is fixed to the container side wall surface With this fixation, the tensioning auxiliary sheet is stretched between the left and right side walls of the container facing the rear opening, supporting the rear surface of the bag main body and preventing the rearward bulging thereof. It is something to do.

In other words, the interior bag of the present invention secures the tensioning auxiliary sheet-like body attached to the rear surface portion to the wall surface portion as a component of the container using the pressure based on the weight of the cargo loaded in the bag, that is, the internal pressure, This suppresses the swelling of the rear surface portion, and eliminates or reduces the conventionally used support bar.

Still further, according to the present invention, a lower insertion piece is added to a lower edge of the above-mentioned tensioning auxiliary sheet-like body, and this insertion piece is inserted under a bottom portion of the bag main body, and the floor of the container is weighted by the weight of the cargo acting on the bottom portion. It is to press and fix to the surface to suppress the bulging of the rear surface portion of the bag main body.

The above-mentioned tension assisting sheet is suitably a flexible and tough synthetic fiber stretched sheet or net having a small elongation, and a sheet or a sheet having a large surface frictional force. A mesh is suitable. It is sufficient that the sheet-shaped body has a size that covers a portion other than the cargo inlet provided at the upper portion of the rear surface of the bag main body, more specifically, a range of about 2/3 of the height. In addition, this sheet-shaped body may be attached independently of the rear surface when used, or the upper edge portion may be fastened to the middle of the rear surface portion by sewing or the like, and then suspended in advance. They may be arranged side by side.

The insertion piece is suitably a tough sheet having a small elongation like the auxiliary sheet for tension, and each free edge is free. You may stop. When fastening the insert pieces, the rear portions of these surface portions are brought close to the side portions attached to the bag main body, that is, the side portions or the bottom portion, so that the length is reduced from the regular length. Fastening is preferable, and when the free edge is free, fastening means for freely attaching and detaching the free edge to a corresponding portion of each of the surfaces facing the free edge, such as a hook-and-loop fastener or an adhesive. A tape or the like may be provided.

Furthermore, when the left and right insertions are formed so that the width of the lower part is larger than the upper part and the overlapping width with respect to each side part is larger at the lower part, the pressure concentrated on the lower part of the tensioning auxiliary sheet-like body is reduced. It can exert a large supporting force on it.

If a support bar is provided along the upper edge of the auxiliary sheet for tensioning, and it is hung on the support bar that passes between the left and right columns of the opening of the container, it will be possible to install The edge can be fixed at a fixed position, which facilitates alignment with the charging duct. On the other hand, in addition to the support by the insertion piece, the upper edge can be supported and fixed as it is, so that a more stable support state can be obtained. become.

Hereinafter, the interior bag of the present invention will be further described based on the illustrated embodiment, and the features thereof will be clarified.

[Embodiment] FIG. 1 is an explanatory perspective view showing a state in which an interior bag according to the present invention is set inside a container, FIG. 2 is a front view of a main part of the interior bag of the upper figure viewed from the rear, FIG. 3 is a longitudinal sectional view in a use state. In the drawing, reference numeral 10 denotes a main body of a bag, 11 denotes an auxiliary sheet-like body for tension (hereinafter simply referred to as an auxiliary sheet-like body) dyed on the outer surface of a rear surface portion 10a of the main body of the bag, and 12 denotes a rear opening of the container 13. A support bar 16 passes between the left and right columns 15 of the portion 14, and suspending cords 16 are used to suspend the main body of the bag at each corner of the container 13 and support the main body of the bag in a suspended manner.

The bag main body 10 is made of a tough sheet, for example, a polyethylene sheet or the like, and is formed so as to conform to the internal dimensions of the container so as to form a cubic shape that is long in the front-rear direction, and is set to the container. At this time, each surface portion is in contact with the inner surface of each wall surface of the container. The bag main body has a cargo inlet 17 opened at the upper portion of the rear surface 10a, and a cover 18 covering the inlet is hung from the rear edge of the upper surface 10b.

The auxiliary sheet-like body 11 is formed using a tough sheet having flexibility and a small elongation, and here is formed in a rectangular shape having substantially the same size as the rear surface portion 10a, and an upper edge portion thereof. Is attached to the upper edge of the rear surface portion and suspended therefrom. A mounting portion 20 formed in a cylindrical shape through which the support bar 12 is inserted is integrally provided on the outer surface along the upper edge portion. Then, from both side edges 11a, 11a of the auxiliary sheet-like body 11, right and left insertion pieces 21, 22 are respectively extended so as to protrude to the side, and here, a lower insertion piece along the lower edge 11b. 23 is extended.

The left and right insertion pieces 21 and 22 extend over substantially the entire length along the length of the side edge 11a, and each has a required width. In this embodiment, the lower width is larger than the upper width so that the lower width is trapezoidal. A tape 24 is provided.

On the other hand, the lower insertion piece 23 is provided so as to hang down from the entire length of the lower end portion 11b thereof in alignment with the width of the auxiliary sheet-shaped body 11, and is formed to have a length that hangs down below the bag main body 10 in a hung state. It is. An adhesive tape 25 similar to the adhesive tape 24 is provided on one surface of the free edge.

The left and right insertion pieces 21, 22 and the lower insertion piece 23 are sandwiched between the inner wall surface of the container 13 along the outer surfaces and the lower surfaces of both side portions 10c, 10c and the bottom portion 10d of the bag main body. The fixing is performed to fix the auxiliary sheet-like body 11, and this relationship will be described below through the use of the interior bag.

The attachment of the bag to the container 13 is performed by hooking the hook 26 of the hanging string 16 on a locking portion (not shown) provided at each corner inside. After being hung by the hook, the insertion pieces 21 and 22 extending from the left and right side edges of the auxiliary sheet-like body 11 hanging along the outer surface of the rear face 10a are respectively provided outside the left and right side faces 10c and 10c. Fold it along the side wall of the container toward the side and insert it between them. At this time, the insertion pieces 21 and 22 are inserted at a depth exceeding their own width, and the insertion pieces come into contact with each other to the extent that the rear portion of the side face 10c of the main body where the insertion pieces overlap is loosened and the folds 27 are generated. (See FIG. 5).

In the figure, reference numeral 28 denotes an adhesive tape as the other fastening means provided on the outer side surface of each side surface portion 10c for receiving the adhesive tape 24 of the inserted piece inserted in this manner.

The adhesive tape 28 is for temporarily fixing the inserted insertion piece in a fixed position. When the insertion piece is inserted as described above, the adhesive tape 24 is formed so that the fold 27 is automatically generated at the rear portion. Is provided in front of the facing position. That is, when the adhesive tape 28 is naturally folded into the insertion pieces 21 and 22 along the side surface 10c, the adhesive tape 28 is provided forward of the position where the adhesive tape 24 of the insertion piece faces, and Glues automatically by gluing 27
Can be formed.

After fixing the left and right insertion pieces 21 and 22 in this manner, similarly, insert the lower insertion piece 23 into the lower surface of the bottom surface 10d, and fold the rear part of the bottom surface portion 10d to form a pleat 29,
The adhesive tape 25 provided on the free edge is attached to the adhesive tape 30 provided at the same position as described above, and this is temporarily fixed.

Here, the procedure is described in which the back main body 10 is hung inside the container, and the left and right and lower insertion pieces 21, 22, and 23 are attached to the side surface and the bottom surface. In advance, these inserts may be temporarily fixed to the side surfaces and the bottom surface so as to be in contact with each other.

After inserting each insertion piece provided in the auxiliary sheet-like body into a predetermined position, the support bar 12 is passed to the rear opening of the container.
Through the mounting section 20 to complete the setting of the bag. still,
The support bar 12 has an end fitted into a groove 31 provided in the column 15 of the rear opening 14 of the container, and is suspended and suspended by a suspending string 32 which is lowered from above, thereby suspending the auxiliary sheet-like body and the rear surface 10a. Will be held.

After setting inside the container, insert 17
Through which cargo such as grain is blown.

The interior bag that received the loading and loading of cargo is the bottom part 10d
With this weight, the lower insertion piece 23 inserted into the lower surface of the container is pressed against the container floor surface and fixed so as to be sandwiched between the two. Then, since a pressure is applied to the side in accordance with the accumulation of the cargo, the same fixing action also works on the left and right insertion pieces 21 and 22 attached to the outer side surface of the side part, and both the insertion pieces are kept inserted. Will be fixed to the figure.

The interior bag receives the cargo in this way, and each face is filled with the weight of the cargo while being pressed against the inner wall surface of the container, and the insertion pieces are fixed as described above, and the auxiliary sheet is stretched in place. Will be maintained. For this reason,
When the cargo finally accumulates in the rear portion of the bag and presses against the rear surface portion 10a, the rear surface portion 10a is prevented from bulging backward by the tension of the auxiliary sheet-like body 11 attached to the outer surface. . At the same time, the pleats 27, 29 formed near the rear edges of the side face 10c and the bottom face 10d due to the insertion of the left and right and lower insertion pieces are also directly affected by the weight pressure of the cargo and are prevented from stretching, so that This creates a tensioned state of the surface portion 10a, which acts to prevent the rearward bulging.

By the way, in order to attach each of the insertion pieces to the respective surface portions and to sandwich and fix the surface portions and the inner wall surface of the container, these insertion pieces were temporarily held by using fastening means or the like. This is because, when an unexpected internal pressure is applied to the rear surface or the like, the stopped state is easily released to prevent the bag from being broken. Of course, even when the free edge of each insertion piece is fixed in advance by sewing or the like, it is desired that the sewn portion be easily broken when an unexpected force is applied. Needless to say.

The interior bag of the present invention is for a 20-ton general-purpose container, and the length of the main bag is 5800 mm, the width is 2300 mm, and the height is 2170 m.
m.
It did not protrude until it came into contact with the door closing the rear opening of the container.

[Effects of the Invention] As described above, according to the present invention, the back surface portion of the bag main body is reinforced by the tension of the tension auxiliary sheet member fixed by the weight pressure of the cargo, and the rearward bulging is prevented. Therefore, it is possible to easily and safely close the door after loading the cargo and open it when loading and unloading, and at the same time, except for some support bars, support at least the area from the center to the lower part of the rear surface. Since you don't have to pass the bar,
It is now possible to freely select the slit by the cutter, and it is possible to cut it into a sufficient size.

Further, the present invention is advantageous in that the use of the support bar can be greatly reduced, thereby lowering the transportation cost, and also has the advantage that the work for mounting the container is simplified, so that the work is greatly reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view showing the appearance of the interior bag according to the present invention set in a container, FIG. 2 is a front view of a main part of the interior bag viewed from the rear, and FIG. FIG. 4 is an enlarged longitudinal sectional view of a main part in a use state, FIG. 5 is an enlarged cross-sectional plan view of the same main part,
FIG. 6 is an explanatory perspective view showing a rear opening of a container, and FIG. 7 is a perspective view showing a conventional example. 10: Main body of bag, 10a: Rear part 10b: Top part, 10c: Side part 10d: Bottom part, 11: Auxiliary sheet for tension 12 ... Support bar 13 ... Container 14 ... Container Rear opening 20 ... Mounting parts 21,22 ... Left and right insertion pieces 23 ... Lower insertion pieces 24,25,28,30 ... Adhesive tape

Claims (5)

(57) [Claims] 1. A tensioning auxiliary sheet is provided along the outer surface of a rear surface of a bag main body adapted to the internal shape of a container having an opening / closing door at a rear opening. An interior bag for a container, comprising left and right insertion pieces extending from both side edges to the outer side surface of the main body of the bag. 2. The container according to claim 1, wherein the tensioning auxiliary sheet is formed of a flexible, non-stretchable sheet-like or net-like tough material. Interior bag. 3. An interior bag for a container according to claim 1, wherein the left and right insertion pieces are formed so as to increase in insertion width from an upper part to a lower part. 4. A method according to claim 1, wherein one of the fastening means is inserted into a free edge of each of the left and right insertion pieces, and this insertion piece is tangentially inserted along the outer surface of the side surface. The container is characterized in that one of the fastening means is provided with the other fastening means on the side surface outside surface in front of the position facing the other fastening means, and both of these fastening means are detachably fastened. Interior bag. 5. The tensioning auxiliary sheet member according to claim 1, wherein left and right insertion pieces are respectively extended from both side edges so as to be attached to the lower surface of the bottom portion of the bag from the lower edge. An interior bag for a container, wherein a lower insertion piece to be inserted is extended.