Suspension fixture

Abstract

To carry out unmanned hitching work for transporting a flexible container bag.SOLUTION: This suspension fixture for suspending a storage container having a pair of string-like handles, comprises: a pole having fasteners provided at both ends and having a length corresponding to a length between the handles of the storage container; two wires connected at one ends to the fasteners and equal in length; a magnetic body ring to which the other ends of the two wires are fastened; and suspension metal fittings provided at both ends of the pole in a direction opposite to the fasteners and used to suspend the handles of the storage container.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a lifting jig. [Background technology]

[0002] In the above-mentioned technical field, Patent Document 1 discloses a lifting tool that can lift a flexible container bag to a predetermined height required for supporting it via multiple shoulder straps at the top so that the flexible container bag does not fall over or deform (paragraph

[0013] of the same document, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-43771 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the technology described in Patent Document 1, it was not possible to perform unmanned slinging work for transporting flexible container bags. [Means for solving the problem]

[0005] In order to achieve the above object, the lifting jig according to the present invention comprises: A lifting jig for lifting a storage container, the storage container having a pair of string-like handles, a rod having a length corresponding to the distance between the pair of handles of the storage container, the rod having fasteners at both ends; two wires of equal length each having one end fastened to the fastener; a magnetic ring to which the other ends of the two wires are fastened; a hanging metal fitting provided on each end of the rod in a direction opposite to the fastener for hanging the handle of the storage container; Equipped with: [Effects of the Invention]

[0006] According to the present invention, slinging work for transporting flexible container bags can be performed unmanned. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view illustrating a flexible container bag as a storage container to be lifted by a lifting jig according to a preferred embodiment of the present invention. FIG. [Figure 2] 1A and 1B are diagrams illustrating the overall configuration of a hanging jig according to a preferred embodiment of the present invention. [Figure 3] 1A and 1B are diagrams illustrating a sling hook for lifting a lifting jig according to a preferred embodiment of the present invention, showing the hook in (a) an open state and (b) a closed state. [Figure 4] 1 is a diagram showing a state before lifting of a lifting jig according to a preferred embodiment of the present invention. FIG. [Figure 5] 1 is a diagram showing a lifting state of a lifting jig according to a preferred embodiment of the present invention. FIG. [Figure 6] 1A to 1C are a side view, a front view, and a top view illustrating the configuration of a rod of a hanging jig according to a preferred embodiment of the present invention. [Figure 7] 1A to 1C are diagrams illustrating the transportation of a storage container using a hanging jig according to a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present invention will be described in detail by way of example with reference to the drawings. However, the configurations, numerical values, processing flows, functional elements, etc. described in the following embodiments are merely examples, and are open to modification and alteration, and are not intended to limit the technical scope of the present invention to the following description.

[0009] A lifting jig according to a preferred embodiment of the present invention will be described with reference to Figures 1 to 7. First, waste containing radioactive materials is stored in a storage container with handles attached at opposing positions, transported to a designated storage location, and stored. The waste stored in the storage container is transported to an interim storage facility at a disposal site where specified waste is accumulated. The storage containers transported to the interim storage facility are hoisted by a crane using a sling attached to the handle, and then lined up end-to-end in the storage location at the disposal site.

[0010] Until now, when aligning storage containers, workers would first manually sling the storage containers placed on the bed of a dump truck, then lift it with a crane and move it to the designated position.Then, while the storage container was suspended in mid-air under the crane, it would be manually pushed into the designated position, and then the container would be lowered from the crane while maintaining its position, and the slings would be removed.This procedure required workers to work in close proximity to waste containing radioactive materials for long periods of time, making it a dangerous job that could expose workers to radiation.

[0011] Here, with reference to FIG. 1, a flexible container bag 1 (officially called a flexible intermediate bulk container (FIBC)) as a storage container used in this embodiment will be described. Flexible container bags 1 are known as containers for storing and storing the above-mentioned radioactive waste and the like. The flexible container bag 1 is a bag-shaped packaging material for storing and transporting cargo such as powders and granular materials. It can also be folded up small when not in use. The overall shape of the flexible container bag 1 is box-shaped (square) or cylindrical (round). A box-shaped (square) flexible container bag 1 is shown in the same figure.

[0012] The structure of the flexible container bag 1 can be broadly divided into a main body, an inlet, an outlet, a pair of handles 2 (hanging portions), etc. In the example shown, a pair of handles 2, i.e., two handles 2 of the same shape, are provided on one side and the opposite side of the rectangular flexible container bag 1. The handles 2 are string-shaped, and when the handles 2 are lifted and pulled, the bent handles 2 stretch, and when the pulling continues, the handles 2 no longer bend and reach their limit of stretch, allowing the main body of the flexible container bag 1 to be lifted.

[0013] The number of handles 2 provided on the flexible container bag 1 is not limited to two. If the flexible container bag 1 is rectangular, the handles 2 are provided on one side of the body and on the opposite side. If the flexible container bag 1 is circular, the handles 2 are provided, for example, at positions on the circumference that are approximately 180° apart from each other, so that a pair of handles 2 face each other.

[0014] The body of the flexi-con bag 1 is woven from strong chemical fibers such as polyethylene (PE) or polypropylene (PP), and comes in a variety of types, including seamless, made from multiple materials joined together, and with a plastic bag inside.

[0015] The inlet for waste or other stored items is an opening at the top of the flexible container bag 1, slit-shaped or cylindrical, and has a gusset. Items are filled through the inlet, which can be closed with the gusset. The outlet is an openable opening at the bottom of the main body, from which stored items are discharged. However, there are also flexible container bags that do not have an outlet, in cases where stored items do not need to be discharged (for storage purposes). The flexible container bag 1 shown in the figure does not have an outlet at the bottom.

[0016] The handle 2 (hanging part) is a fulcrum to which a rope or belt is connected to lift the flexible container bag 1, and is attached to the side or bottom of the main body. The flexible container bag 1 can be lifted and transported using a forklift, crane, etc.

[0017] Although the flexible container bag 1 has been used as an example of a storage container here, the storage container is not limited to the flexible container bag 1 as long as it is a container that can be lifted and moved by a crane or the like.

[0018] Next, the lifting jig 10 will be described with reference to Fig. 2. The lifting jig 10 is a jig used to lift a flexible container bag 1, which serves as a storage container for storing and transporting waste containing radioactive materials, and move it to a storage location. The lifting jig 10 has a pole 11, wires 15a and 15b, a magnetic ring 20, and a lifting metal fitting 16. The pole 11 is provided with fasteners 13 on both ends, and has a length corresponding to the longitudinal length of the storage container.

[0019] The wires 15a and 15b are of equal length. One end of the wires 15a and 15b is fastened to the fastener 13 and connected to the rod 11. The wires 15a and 15b are made of a non-magnetic material. By making the wires 15a and 15b from a non-magnetic material, the wires 15a and 15b will not be attracted to the magnet even if a magnet is brought close to the wires 15a and 15b. The wires 15a and 15b may be made of any non-magnetic material, such as metal, fiber, or resin.

[0020] The other ends of the wires 15a and 15b, i.e., the ends not fastened to the fastener 13, are fastened to the magnetic ring 20. The magnetic ring 20 is a ring made of a material that has the property of attracting a magnet when brought close. The shape of the magnetic ring 20 may be any shape, such as a circle, ellipse, rectangle, or polygon, as long as it is a wound loop.

[0021] The hanging fittings 16 are provided on both ends of the pole 11, facing in the opposite direction to the fasteners 13, and are members for hanging the handle 2 of the storage container (flexible container bag 1). The hanging fittings 16 are, for example, carabiners. A carabiner is a generally oval-shaped tool, a metal ring with an openable and closable member (opening and closing member) attached to part of the oval. Carabiners are tools designed to withstand heavy loads, and are very strong, made from an alloy of aluminum and copper, such as duralumin. Furthermore, because carabiners are made from an aluminum alloy, they are non-magnetic (do not have magnetism).

[0022] A carabiner is primarily composed of the strongest part called the spine, an opening / closing member called the gate, a receiving part called the basket that applies force in the same direction as the spine, and the part called the nose where the gate and the carabiner body come into contact. When hooking the handle 2 of a flexible container bag 1 onto the carabiner, the worker presses the handle 2 against the gate, which separates it from the nose and opens the gate. When the worker pushes the handle 2 further inward, the handle 2 passes through the gate and moves into the space inside the carabiner, where it returns to a position where it contacts the nose, closing the gate. In this state, the handle 2 is firmly held by the carabiner and will not easily come off.

[0023] Next, the sling hook 30 will be described with reference to Figure 3. The sling hook 30 has an openable hook 31, which can be opened or closed to hang a handle 2 or the like on the hook 31. The sling hook 30 has a magnet 32 ​​built into the bottom of the main body. The magnet 32 ​​may also be attached to the outside of the main body of the sling hook 30.

[0024] The sling hook 30 is attached to the end of a wire rope of a crane or the like. When the sling hook 30 is brought close to the magnetic ring 20 of the lifting jig 10, it is attracted by the magnetic force of the magnet 32, and the magnetic ring 20 and the magnet 32 ​​stick together (FIG. 3(a)). When the remote control 33 is operated in this state to close the hook 31, the hook 31 passes through the loop of the magnetic ring 20 and is closed. This allows the worker to use the remote control to perform slinging work using the sling hook 30 from a position away from the sling hook 30.

[0025] Next, lifting of the flexible container bag 1 using the lifting jig 10 will be described with reference to Figures 4 and 5. Figure 4 shows the state before the flexible container bag 1 is lifted using the lifting jig 10, and Figure 5 shows the state after the flexible container bag 1 has been lifted using the lifting jig 10. First, the worker attaches the lifting jig 10 to the flexible container bag 1 before storing an item therein. The lifting jig 10 is attached by hooking the hanging metal fitting 16 onto the handle 2. By attaching the lifting jig 10 to the flexible container bag 1 before storing an item therein in advance, the worker can perform the slinging work without having to approach the flexible container bag 1.

[0026] When the slinging hook 30 is brought close to the flexible container bag 1 containing the contents, the magnetic ring 20 is attracted to the magnet 32 ​​of the slinging hook 30 and comes into close contact with the slinging hook 30. Once the magnetic ring 20 has come into close contact with the slinging hook 30, the worker operates the remote control 33 to close the hook 31. Once the hook 31 is closed, the slinging hook 30 is lifted, and the wires 15a and 15b are pulled and extended, and when they reach their limit, the pole 11 is lifted, and following this, the flexible container bag 1 is lifted.

[0027] The structure of the pole 11 will be described with reference to Figure 6. The pole 11 is composed of a rod 12 and end plates provided on both ends of the rod 12. The rod 12 is a long, hollow cylindrical tube (Figure 6(a)), with notches 17 provided on both ends (Figure 6(c)), into which the end plates 14 are fitted by welding or the like. The end plates 14 are rectangular with chamfered corners, so that the flexible container bag 1 will not be damaged by the end plates 14 coming into contact with it. Furthermore, insertion holes 18 are provided at the top and bottom of the end plates 14, into which the fasteners 13 and hanging hardware 16 are fastened.

[0028] The length of the pole 11 (rod 12 portion) corresponds to the distance between the pair of handles 2 of the flexible container bag 1. The material of the pole 11 (rod 12) is preferably non-magnetic stainless steel, but any non-magnetic material may be used.

[0029] Here, the shape of the rod 12 (stick 11) has been described as being a long cylinder, but the shape of the rod 12 is not limited to a cylinder, and may be, for example, an H-shaped shape using an H-steel.

[0030] As described above, all components of the hoisting jig 10 are made of non-magnetic materials except for the magnetic ring 20. Therefore, only the magnetic ring 20 is attracted to the magnet of the sling hook 30, allowing slinging work to be performed remotely and automatically.

[0031] The transportation of the flexible container bag 1 will be described with reference to Figure 7. The flexible container bag 1 containing radioactive waste is loaded onto a dump truck 70 and transported to an interim storage facility. When the flexible container bag 1 arrives at the interim storage facility, the sling 16 of the sling jig 10 is attached to the handle 2, and the sling jig 10 (rod 11) is placed on the flexible container bag 1. The magnetic ring 20 is hooked by the hook 31 of the sling hook 30, thereby performing a slinging operation on the magnetic ring 20.

[0032] When slinging onto the magnetic ring 20, first, the slinging hook 30 is brought close to the magnetic ring 20 of the lifting jig 10. When bringing the slinging hook 30 close, the operator of the crawler crane 40 brings the slinging hook 30 close to the lifting jig 10 while watching the image from the camera 41 (first camera) attached to the tip of the boom.

[0033] Next, when the magnetic ring 20 is attracted to the magnet 32 ​​of the sling hook 30, the remote control 33 is operated to close the hook 31, completing the slinging of the magnetic ring 20. Once the slinging of the magnetic ring 20 is complete, the crane wire is reeled in to lift the flexible container bag 1. A camera 41 is attached to the tip of the boom of the crawler crane 40, and the operator of the crawler crane 40 moves the flexible container bag 1 to the vicinity of a predetermined position while checking the image from the camera 41.

[0034] When the flexible container bag 1 reaches the vicinity of the predetermined position, the operator of the backhoe 50 operates the bucket 52 while checking the images from the camera 51 (second camera) mounted on the backhoe 50 and the camera 60 (third camera) placed on the site, with the flexible container bag 1 still hoisted. Here, the backhoe 50 can be remotely controlled from a distance, and the driver's seat of the backhoe 50 is left unmanned.

[0035] The operator of the backhoe 50 adjusts the position of the flexible container bag 1 with the bucket 52 while checking the images from the cameras 51 and 60. Note that in FIG. 7, the camera 51 is installed above the driver's seat of the backhoe 50, but the installation position of the camera 51 is not limited to this, and for example, the camera 51 may be installed in the driver's seat of the backhoe 50 or in the front part.

[0036] Camera 51 shows an image seen from the driver's seat of the backhoe 50, and camera 60 shows an image seen from the side of the flexible container bag 1. Therefore, when the operator of the backhoe 50 adjusts the left-right position of the flexible container bag 1, he does so while checking the image from camera 51, and when he adjusts the front-to-back position, he does so while checking the image from camera 60.

[0037] In this way, when the flexible container bag 1 reaches a position directly above the predetermined position (storage location), the crawler crane 40 is released from lifting and the flexible container bag 1 is placed in the storage location. In other words, the operator of the crawler crane 40 loosens the wire of the crawler crane 40 and suspends the flexible container bag 1 until it touches the ground.

[0038] Then, when the flexible container bag 1 touches the ground, the locked state of the hook 31 of the sling hook 30 is released by remote control, causing the magnetic ring 20 to fall under its own weight, and at the same time, the tension in the handle 2 and the wires 15a, 15b is released, causing the flexible container bag 1 to fall together with the hanging jig 10 to the top of the flexible container bag 1. Once the flexible container bag 1 has been placed in the specified position (storage location) in this manner, the hanging jig 10 is removed from the flexible container bag 1 and collected.

[0039] According to this embodiment, the slinging work for transporting the flexible container bag can be performed unmanned. Also, the flexible container bag 1 containing radioactive waste can be transported to the intermediate storage facility without the worker having to get closer than necessary to the flexible container bag.

[0040] Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above-described embodiments and can be modified as appropriate. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention. [Explanation of symbols]

[0041] 1. Flexible container bag (storage container) 2 Handle 3 bottom 10 Lifting jig 11 Rod 12 rods 13 Fasteners 14 End plate 15a, 15b wire 16 Hanging hardware 17 Notch 18 Insertion hole 20 Magnetic ring 30 Sling Hook 31 Hook 32 Magnet 33 Remote Control 40 Crawler Crane 41 Camera (1st Camera) 50 Backhoe 51 Camera (2nd Camera) 52 Bucket 60 Camera (3rd Camera) 70 Dump Truck

Claims

1. A lifting jig for lifting a storage container, the storage container having a pair of string-like handles, a rod having a length corresponding to the distance between the pair of handles of the storage container, the rod having fasteners at both ends; two wires of equal length each having one end fastened to the fastener; a magnetic ring to which the other ends of the two wires are fastened; a hanging metal fitting provided on each end of the rod in a direction opposite to the fastener for hanging the handle of the storage container; A lifting jig equipped with

2. 2. The lifting jig according to claim 1, wherein the rod is a stainless steel H-shaped steel.

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