JP2019089591A - Sandbag refilling bag - Google Patents

Abstract

To provide a sandbag refilling bag capable of being lifted in a fallen state without leaking a filled material contained therein even if it falls over.SOLUTION: A sandbag refilling bag of the present invention comprises a bag body and a restraint belt joined to the bag body. The bag body has a substantially cylindrical body, a bottom part closing a lower side of the cylindrical body and a substantially cylindrical lid connected to an upper edge of the cylindrical body, and has sealing means for closing an opening of the bag body by fastening a string body in the vicinity of the upper edge of the lid. The restraint belt has four reinforcing parts connected along a vertical direction of the cylindrical body at each part in a circumferential direction of the cylindrical body, two support parts continuous in a loop form extending above the cylindrical body from above the two adjacent reinforcing part and two lifting parts continuous via the bottom from below two reinforcing part discontinuous at the support part, and has connection means for connecting to each other in a center of at least one of the two support parts, also has an insertion space for lifting between the lifting part and the bottom part.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to a soil refill bag, and more particularly to a soil refill bag that can be lifted in a fallen posture without leaking the packing material contained therein even if it falls over.

With the accident at the Fukushima Daiichi Nuclear Power Station in 2011, a large amount of radioactive waste, mainly contaminated soil, has been generated. These radioactive wastes are sealed in soil bags and flexible containers and stored at temporary storage sites, and transported to intermediate storage facilities as needed according to the progress of disposal.
However, the service life of soil bags is about several years, and if the surface of the bag is deteriorated due to ultraviolet light etc., there is a risk that the radioactive material inside will break off and be dropped when carrying, as it is broken. . Therefore, when storing and transporting soil bags and the like in which radioactive substances are sealed, work is being carried out to transfer soil bags and the like that may be deteriorated, to a new refill bag together with the bags.
Patent Document 1 (paragraph 0040, FIG. 10) discloses a process of refilling the deteriorated flexible container bag into a refill bag together with the filling.

JP, 2017-190175, A

The prior art has the following problems.
<1> At the time of conveyance by a dump truck etc., if the refilling bag falls from the loading platform, the refilling bag may be broken, and harmful radioactive materials in the soil may leak out.
<2> Since the bag mouth of the refillable bag is only tied with a rope, there is a risk that radioactive material may spill out of the bag mouth when the rope is broken or dropped when it is dropped.
<3> In order to upset the sideways or inverted refill bag, it is necessary to wind a belt or the like around the bag body for sagging and to re-restrain. This is a health concern as it increases worker exposure time to radioactive material.
<4> When the refilling bag falls sideways or turns over, if it is attempted to lift it using the hanging belt at the top of the refilling bag, the belt or bag body is biased and the refilling bag is easily damaged.
If the <5> refilling bag is lifted upside down, the lid may be torn and dropped due to the load of the soil bag inside.

A soil refilling bag according to the present invention for solving the above problems comprises a bag and a restraining belt, the bag having a body, a bottom and a lid and having a sealing means near the upper edge of the lid, A restraining belt has four reinforcements, two supports, and two lifting tops, has connecting means on at least one of the two supports, and has an insertion space between the lifting top and the bottom. I assume.
According to this configuration, the lifting operation and the restacking operation after the fall can be made efficient, and the exposure time of the worker can be significantly shortened.

The soil refilling bag of the present invention has a diameter φ ^{1 at} the bottom of the bag, a height H ^1, a diameter φ ^{2 at} the bottom of the soil bag ^{, and a} height H ² (φ ¹ + (H ^1- H ² )) / φ It is characterized by satisfying the formula ² ≧ 1.15.
According to this configuration, it is possible to secure a safe hanging angle and to prevent breakage of the bag body.

The soil refill bag according to the present invention is characterized in that the support portion has a length capable of supporting the soil bag from the lower side in a state in which the bag body is lifted upside down.
According to this configuration, it is possible to prevent the lid from being broken and the dirt falling.

The soil refill bag according to the present invention is characterized in that the sealing means is either a purse string structure or a combined cord and loop structure.
According to this configuration, it is possible to firmly fasten the lid of the bag body and to prevent the leakage of the soil filling from the lid.

The soil refill bag of the present invention is characterized in that the two lifting tops intersect at the bottom.
According to this configuration, the bottom of the bag can be reinforced against the load of the dirt bag.

The present invention has at least one of the following effects from the above configuration.
<1> Since the bag mouth is firmly fastened by the sealing means, there is no risk that the radioactive substance will leak from the bag mouth even if it is dropped.
<2> Even when the refilling bag falls horizontally or in reverse, by hanging the hanging upper portion of the bottom with a crane, the refilling bag can be easily lifted without changing the direction of the refilling bag. Therefore, the exposure time for workers is short, and the safety is high.
<3> Since the load of the soil bag applied to the lid portion can be supported by the connected support portion at the time of upside-down suspension, there is no possibility that the soil bag will break the lid portion and fall.
By setting the diameter of the <4> bag body in a predetermined range larger than the diameter of the soil bag, the belt or bag body is less likely to be subjected to an eccentric pressure during lifting, and is less likely to be broken.

Explanatory drawing of the soil refill bag which concerns on this invention. Explanatory drawing of the soil refill bag which concerns on this invention. Explanatory drawing of a hanging top. Explanatory drawing of a support part.

Hereinafter, the soil refilling bag of the present invention will be described in detail with reference to the drawings.
In the present specification and the like, "soil bag" means a bag made of soil bag or flexible container filled with a filling such as radioactive waste.

[Overall configuration]
<1> Overall configuration (FIG. 1).
The soil refilling bag 1 of the present invention is a bag body for preventing the leakage of the packing due to the deterioration of the soil A by enclosing the packing A filled with the packing inside.
The soil refilling bag 1 includes a bottomed substantially cylindrical bag 10 and a restraining belt 20 joined to the bag 10.

<2> bag body.
The bag 10 is a bag-like component that encloses the dirt bag A.
The bag body 10 includes at least a substantially cylindrical trunk portion 11, a substantially cylindrical lid portion 12 connected to the upper edge of the trunk portion 11, and a bottom portion 13 closing the lower portion of the trunk portion 11.
In the vicinity of the upper edge of the lid 12, the sealing means 12a for sealing the opening after the placement of the dirt bag A is provided.
It is desirable for the bag body 10 to use a material having high strength, weather resistance and durability that can cope with lifting and lowering operations.
In this example, as a material of the bag body 10, polypropylene in which an ultraviolet absorber (carbon black) is woven is adopted. However, not limited to this, polyester or other synthetic resin material may be adopted.

<2.1> Diameter of bag.
For safety, it is necessary to set the suspension angle to 60 degrees or less in the rigging operation.
Therefore, in order to secure a hanging angle of 60 degrees or less with the diameter φ ¹ at the bottom of the soil refill bag 1 as the both sides and the diameter φ ² at the bottom of the soil A as the base, φ ¹ : φ ² = 2 :: 3 Therefore, it is desirable that the ratio of φ ¹ and φ ² satisfy the following Equation 1.

<2.2> Relationship between diameter and height of bag.
Also, sandbags height H ¹ of the inclined sides of the refill pouch 1, since it can be regarded as base the height H ² of sandbags A, from the equation 1, sandbags diameter of the bottom of the refill pouch 1 phi ¹ and a height H It is desirable that the diameter φ ² and the height H ² of the bottom of the soil bag A and the diameter ^{1 of} the soil gage A satisfy the following equation (2).

ここで、土のう詰め替え袋１の高さＨ^１及び土のうＡの高さＨ^２とは、それぞれの袋体の口部を開いた状態において、袋体の胴部の高さに蓋部における縛り口部（土のう詰め替え袋１における閉鎖手段１２ａ）までの高さを加えた高さを意味する。
本発明の土のう吊り上げ袋１は、土のう詰め替え袋１の底部の直径φ^１及び高さＨ^１が上記の比率を満たすことによって、玉掛け作業の安全性を確保することができる。
また、吊り上げ時や転落による受衝時、土のう詰め替え袋１と土のうＡの間に適切な余裕が確保されているため、部分的な応力集中による袋体１０の破損を防ぐことができる。

Here, the height H ² of the height H ¹ and sandbags A of sandbags refill bag 1, in opened mouth portion of the respective bag body, tied at the lid at the height of the body portion of the bag body mouth It means the height which added the height to the part (the closing means 12a in the dirt bag 1).
Sandbag lifting bag 1 of the present invention, the bottom diameter phi ¹ and a height H ¹ of the sandbags refill bag 1 by satisfying the above-mentioned ratio, it is possible to ensure the safety of the rigging.
Further, at the time of lifting or receiving a drop, since an adequate margin is secured between the soil filling bag 1 and the soil filling A, breakage of the bag body 10 due to partial stress concentration can be prevented.

<2.3> Sealing means.
The sealing means 12a is a means for fastening the opening of the lid 12 to seal the bag.
In this example, a drawstring structure with a cord body provided circumferentially in the vicinity of the upper edge inside the lid 12 is adopted.
By pulling the annularly fastened cord body to both sides, the cord body inserted into the inside of the lid 12 can draw close the opening and be tightly closed.
With this structure, it is possible to prevent the filling material from leaking out through the opening due to, for example, the ropes fastened when the soil filling bag 1 falls or falls over.
In addition, the sealing means 12a is not restricted to the drawstring structure, For example, you may employ | adopt the combination structure of the string connected to one side of the cover part 12, and the loop provided in the other side (FIG. 2).
In this case, after the opening of the lid 12 is squeezed with a string, fastening through a loop can prevent the string from falling off due to a drop impact.

<3> Restraint belt.
The restraint belt 20 is a band-like body having a reinforcing function of the bag body 10, a lifting function, and a lid supporting function at the time of inverted lifting.
The restraining belt 20 is formed by connecting the belts connected in an endless manner overall along the up-down direction of the body 11 at four places in the circumferential direction of the body 11.
The restraint belt 20 includes four reinforcing portions 21 connected to the circumferential surface of the trunk portion 11, two looped support portions 22 extending from the adjacent reinforcing portions 21 to the upper side of the trunk portion 11, and support It extends downward from the two reinforcing portions 21 not continuous in the portion 22 and has two lifting tops connected via the bottom.
Similar to the bag 10, it is desirable that the restraint belt 20 be made of a material having high strength, weather resistance, and durability.
In this example, a polypropylene band is employed as the restraining belt 20. However, not limited to this, polyester or other synthetic resin material may be adopted.

<3.1> Reinforcement part.
The reinforcing portion 21 is a portion connected to the bag 10 and having a reinforcing function of the bag 10.
In this example, the restraint belt 20 is a portion disposed along the upper and lower sides of the trunk portion 11 of the bag body 10.
The reinforcing portion 21 does not have to be sewn to the trunk portion 11 over the entire length, and may be partially sewn if a predetermined strength can be secured.
In the present example, a reinforcing member 21 a is further provided to partially cover and reinforce the reinforcing portion 21.

<3.2> Support part.
The support part 22 is a part which has a function of a hand of the soil refill bag 1 at the time of conveyance, and has a function of preventing breakage of the lid 12 at the time of inverted suspension.
The length of the support portion 22 is such a length that can support the load of the soil bag A through the lid 12 in a state in which the soil bag A is enclosed and suspended upside down. This can prevent the dirt A from falling due to breakage of the lid 12.
At least one central portion of the two support portions 22 is provided with connecting means 22 a for connecting the support portions 22 with each other.
In this example, a long surface fastener provided on one side of the support portion 22 is employed as the connection means 22a. By winding the surface fastener around the other support portion 22 and then fastening it, both support portions 22 can be connected.
In addition, the connection means 22a is not restricted to a hook-and-loop fastener, You may employ | adopt various string bodies, number lines, etc.

The <3.3> hanging part (FIG. 3).
The hanging portion 23 is a portion having a function of a hand when the soil filling bag 1 falls over and reverses.
The hanging portion 23 is connected to the two reinforcing portions 21 via the bottom portion 13 of the bag body 10.
An insertion space for hooking a crane is formed between the hanging portion 23 and the bottom portion 13.
In the present example, the lifting portion 23 is partially sewn to the bottom portion 13. However, the invention is not limited to this, and the lifting portion 23 may be completely independent of the bottom portion 13.
In the present example, the two lifting portions 23 intersect at the bottom portion 13. Crossing the lifting portions 23 enables lifting at the points of intersection, thus facilitating putting on the ball. However, the present invention is not limited to this, and the lifting portions 23 may be arranged in parallel at the bottom portion 13.

[how to use]
Then, the usage method of the soil refill bag of this invention is demonstrated.
<1> Refilling work.
The refilling operation of the soil bag A is performed by placing the soil refilling bag 1 with the cover 12 opened upward on the ground and suspending the soil bag A lifted by a crane or the like thereon.
With the bottom of the soil bag A suspended at a height of about 10 to 20 cm above the soil refill bag 1, the lid 12 and the body 11 of the soil bag 1 are pulled upward to cover the trunk of the soil bag A .
Subsequently, the dirt bag A is completely lowered, the lid 12 covers the top of the dirt bag A, and the opening is tightly closed by the sealing means 12a.
The two support portions 22 are bundled and connected to each other by the connection means 22a.
Thereafter, the support portion 22 is lifted by a crane or the like as a hanger and conveyed.

<2> Restacking work.
When the soil refilling bag 1 falls from a truck bed or the like, it usually rolls over or turns the bottom 13 upside down.
If the load on the bag body 10 is small when lifting from the bottom 13 side during rollover, and if it is upside down, lift up the lifting belt 23 by lifting it upside down with a crane etc. Reload on the loading platform.
In addition, when the soil refilling bag 1 is in the normal position, that is, in a state in which the lid 12 faces upward and the bottom 13 is grounded, the support 22 can be used as a hanger and restacked on a loading platform by a crane or the like.

<3> The function of the soil filling bag.
Sandbag refill bag 1 of the present invention, since the diameter phi ¹ of the bag body 10 has a predetermined ratio to the diameter phi ² of sandbags A, not concentrated stress on the surface of the bag body 10 even when the impact receiving by falling , Hard to break.
Further, since the lid 12 is firmly sealed by the sealing means 12a, there is no possibility that the filling of the soil A will leak out of the lid 12 even if it falls.
When the soil refilling bag 1 is lifted upside down by the hanging part 23, the soil bag A inside the bag body 10 gets on the lid part 12, and the load of the soil bag A causes the lid part 12 to expand downward.
At this time, the support portion 22 connected by the connection means 22a supports the dirt A from the lower side through the lid portion 12 (FIG. 4), so that the lid portion 12 can be prevented from being broken and falling.

DESCRIPTION OF SYMBOLS 1 Soil bag 10 Bag 11 Body 12 Lid 12a Sealing means 13 Bottom 20 Restraint belt 21 Reinforcement part 21a Reinforcement material 22 Support part 23 Hanging part A Soil bag

Claims (5)

It is a soil refill bag for sealing the soil bag with the filling material,
A bag and a restraint belt joined to the bag;
The bag body has a substantially cylindrical body, a bottom closing the lower side of the body, and a substantially cylindrical lid connected to the upper edge of the body.
In the vicinity of the upper edge of the lid portion, there is provided sealing means for closing the opening of the bag body by fastening the cord body,
The restraint belt extends from above the trunk portion to the upper side of four reinforcing portions connected along the vertical direction of the trunk portion at respective portions in the circumferential direction of the trunk portion, and from above the adjacent two reinforcing portions. The two continuous support portions and the two suspension tops which are continuous from the lower side of the two discontinuous reinforcement portions via the bottom portion,
In the center of at least one of the two support parts, there is a connecting means for connecting to each other,
There is an insertion space for lifting between the lifting top and the bottom,
Soil refill bag Wherein the diameter phi ² and height H ² of the bottom diameter phi ¹ and a height H ¹ and the sandbags the bottom of the bag satisfies the formula below, sandbags refill bag according to claim 1.
(Φ ¹ + (H ^1- H ² )) / φ ^{2 1.} 1.15   In the state where the length of the support portion encloses a soil bag inside the bag body, the two support portions are connected by the connection means, and the bag body is lifted upside down by the lifting portion, the lid The soil bag according to claim 1 or 2, characterized in that the soil bag has a length that can be supported from below through the section.   The sealing means is either a drawstring structure by a cord provided circumferentially in the lid, or a combined structure of a cord connected to one side of the lid and a loop provided on the other side. The soil refill bag according to any one of claims 1 to 3.   The soil bag according to any one of claims 1 to 4, characterized in that the two lifting tops intersect at the bottom.

Images