JP6979734B1 - Pallets for drums - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pallet for a drum can having an opening for confirming the upper and lower surfaces of a drum can containing radioactive waste and having a strength for receiving a load of the drum can. SOLUTION: An upper deck plate having a circular upper opening, a lower deck plate having a lower opening and arranged so as to face the upper deck plate, the upper deck plate and the lower deck plate. The middle of the gate pillars interposed at the four corners to secure a space between the two and the gate pillars at both ends so that two insertion holes are formed on each side of the upper and lower deck plates. The right reinforcing material attached to the lower surface of the upper deck plate to reinforce the space between the pillar and the middle pillar on the right when the upper opening is viewed from the gate pillar, and the left side of the gate pillar. It has a left reinforcing material attached to the lower surface of the upper deck plate to reinforce the space between the middle pillar and the middle pillar. [Selection diagram] Fig. 1

Description

The present invention relates to a drum pallet for placing and storing a drum can containing radioactive waste.

Radioactive waste such as used protective clothing generated in facilities such as nuclear power plants is stored in waste containers such as drums. Waste containers are transported and stored on metal pallets. In the case of drums, one or four can be placed on one pallet. Waste containers are arranged vertically and horizontally, and are further stacked in multiple stages via pallets.

If the waste container is stored for a long period of time, water droplets may adhere to the bottom and lid of the container due to condensation of water inside the container, and corrosion may proceed from there, causing radioactive substances to leak to the outside through the holes. There is. Therefore, an opening is provided in the pallet, and the upper and lower surfaces of the waste container are photographed with a camera or the like to check the state of corrosion.

As described in Patent Document 1, even when a large number of waste containers containing radioactive waste are juxtaposed, radioactive waste that presumes corrosion of the waste container and prevents leakage of radioactive substances. The invention of the material container inspection equipment is also disclosed.

Japanese Patent No. 6695580

However, if the opening of the pallet is increased in order to widen the confirmation range of the waste container, the portion that receives the load of the waste container becomes smaller. In the case of a cylindrical drum can, the load may vary depending on how the waste is put in, but there is a part where the strength is weakened because the pallet has a hole for inserting a claw when moving it with a forklift.

Therefore, an object of the present invention is to provide a drum pallet having an opening for confirming the upper and lower surfaces of a drum can containing radioactive waste and having a strength for receiving a load of the drum can.

In order to solve the above problems, the drum pallet of the present invention is arranged so as to face the upper deck plate having a circular upper opening and the upper deck plate having a lower opening. Two insertion holes are formed on each side of the lower deck plate, the gate pillars interposed at the four corners thereof to secure a space between the upper deck plate and the lower deck plate, and the upper and lower deck plates. On the lower surface of the upper deck plate to reinforce the space between the middle pillars arranged between the gate pillars at both ends and the middle pillars on the right side when the upper opening is viewed from the gate pillars. It has a right reinforcing material attached and a left reinforcing material attached to the lower surface of the upper deck plate to reinforce between the middle pillar on the left side of the gate pillar, and is inside the left and right reinforcing materials. The plate and the inner side wall of the middle pillar are arranged so as to surround the upper opening in a dodecagonal shape.

In the pallet for drums, the upper deck plate is provided with a guide on the upper surface thereof so that the drum can can be placed on the edge of the upper opening, and the positions of the inner plates of the left and right reinforcing materials and the inner side walls of the middle pillar are located. It is characterized in that it fits between the upper opening and the guide.

In the drum pallet, the right reinforcing material and the left reinforcing material are symmetrical pentagonal plate materials, and the side plates on each side are bent upward to form a roundness, which is lower than the upper deck plate. It is characterized by being attached so as to come out to.

In the drum pallet, the lower deck plate has a size larger than that of the upper deck plate, and the end material having a tapered portion formed for positioning when the lower deck plate is placed on the drum can while maintaining the strength of the side surface. It is characterized by having.

The drum pallet is characterized in that the insertion hole is provided so that the means for photographing the drum can can pass through the upper opening or the lower opening.

According to the present invention, it is possible to secure the strength for receiving the load of the drum can while securing the opening for confirming the upper and lower surfaces of the drum can containing the radioactive waste. In addition, the reinforcing material is arranged in a well-balanced manner while securing a hole for inserting the claw in the pallet, so that the drum can can be stably placed even if the load is partially concentrated.

It is a perspective view which shows the pallet for a drum can of this invention. It is a top view which shows the pallet for a drum can of this invention. It is a front view which shows the pallet for a drum can of this invention. It is sectional drawing which cut in AA of the pallet for a drum can of this invention. It is sectional drawing cut in BB of the pallet for a drum can of this invention. It is a hexagonal view of the reinforcing material of the pallet for a drum can of this invention. It is a figure explaining the shape of the reinforcing material of the pallet for drums of this invention. It is a top view explaining the mounting part of the pallet for drums of this invention. It is a figure which shows the use state of the pallet for a drum can of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Those having the same function are designated by the same reference numerals, and the repeated description thereof may be omitted.

First, the structure of the pallet for drums according to the present invention will be described. FIG. 1 is a perspective view showing a pallet for drums. FIG. 2 is a plan view showing a pallet for drums. FIG. 3 is a front view showing a pallet for drums. FIG. 4 is a cross-sectional view of a drum pallet cut by (a) AA and (b) an enlarged view of a part thereof. FIG. 5 is a cross-sectional view taken along the line BB of the drum pallet.

As shown in FIG. 1, the drum pallet 100 has an upper deck plate 200 having a circular upper opening 210 and a lower deck having a lower opening 310 open so as to face the upper deck plate 200. It has a plate 300.

As shown in FIG. 2, the upper deck plate 200 is a rectangular (substantially square) metal plate, and the edges of the four sides are bent downward. The upper opening 210 may be formed by punching out the center while leaving the mounting portion 230 in an edge shape so that the cylindrical drum can 110 can be placed on the upper deck plate 200. The lower surface of the drum can 110 can be visually recognized from below through the upper opening 210.

When the drum can 110 is placed on the mounting portion 230 of the upper deck plate 200, the guide 220 may be provided so as to surround the mounting portion 230 so that the position of the drum can 110 does not shift. The guide 220 may be fixed by bending the metal plate in an annular shape so as to project onto the upper deck plate 200.

The lower deck plate 300 is a rectangular metal plate similar to the upper deck plate 200, and the edges of the four sides are bent downward. The lower deck plate 300 has a larger size in length and width than the upper deck plate 200, but the lower opening 310 may be vacant with the same diameter as the upper opening 210. The upper surface of the drum can 110 can be visually recognized from above through the lower opening 310.

As shown in FIG. 3, the drum pallet 100 has a gate pillar 400, an upper deck plate 200, and a lower deck plate interposed at four corners thereof in order to secure a space between the upper deck plate 200 and the lower deck plate 300. It has a middle pillar 410 (410a, 410b) arranged between the gate pillars 400 at both ends so that two insertion holes 420 are formed on each side of the 300.

The gate pillar 400 is a metal plate bent into a square pipe with a square cross section. The upper part is hung on the corner of the bent edge of the upper deck plate 200, and the lower surface is placed on the corner of the lower deck plate 300 and fixed by welding or the like. Just let me do it.

As shown in FIG. 4A, the middle pillar 410 is formed by bending a metal plate into a square pipe having a rectangular cross section (the short side is the same length as the gate pillar 400), and the upper part is the bending of the upper deck plate 200. It may be hung on the central portion of the edge, and the lower surface may be placed on the central portion of the end of the lower deck plate 300 and fixed by welding or the like.

The insertion hole 420 is a cavity between the gate pillar 400 and the middle pillar 410, and is used when a forklift claw is inserted to lift and move the drum pallet 100. The insertion hole 420 may be passed through a means for photographing the lower surface or the upper surface of the drum can 110 from the upper opening 210 or the lower opening 310, such as a small vehicle equipped with a camera and capable of remote control.

As shown in FIG. 4B, the lower deck plate 300 has a scrap piece 330 on which a tapered portion 340 is formed for positioning when the lower deck plate 300 is placed on the drum can 110 while maintaining the strength of the side surface.

The offcuts 330 are arranged along the sides of the lower deck plate 300 so as to fit inside the bent edges of the lower deck plate 300. The end material 330 is made by bending a metal plate into a substantially U-shaped cross section, and the supporting capacity is maintained even if something hits the side surface of the lower deck plate 300 and is damaged.

Further, similarly to the guide 220 of the upper deck plate 200, the drum can 110 is guided by the tapered portion 340 of the end material 330 so that the position of the drum can 110 comes to the center of the lower deck plate 300. The end material 330 reinforces the position where the gate pillar 400 and the middle pillar 410 are placed, but may not reach the edge of the lower opening 310.

As shown in FIG. 5, the drum pallet 100 has an upper deck in order to reinforce the space between the gate pillar 400 and the middle pillar 410a on the right side (the position where the insertion hole 420 is located) when the upper opening 210 is viewed from the gate pillar 400. It has a right reinforcing material 500 attached to the lower surface of the plate 200 and a left reinforcing material 510 attached to the lower surface of the upper deck plate 200 to reinforce the space between the right reinforcing material 500 and the middle pillar 410b on the left side of the gate pillar 400.

For example, in the case of the lower left gate pillar 400 in FIG. 5, a pentagonal right reinforcing material 500 is attached to the right side of the gate pillar 400, and the right reinforcing material 500 and the symmetrical left reinforcing material 510 are the right reinforcing material 500 on the upper side of the gate pillar 400. It is installed adjacent to.

Next, the reinforcing material for the pallet for drums according to the present invention will be described. FIG. 6 is a six-view view of a reinforcing material for a drum pallet. FIG. 7 is a view for explaining (a) a perspective view and (b) a shape of a reinforcing material for a drum pallet. FIG. 8 is a plan view illustrating a mounting portion of a drum pallet.

As shown in FIGS. 6 and 7 (a), in the case of the right reinforcing material 500, the inner plate 530, the adjacent side plate 540, the gate side plate 550, and the middle side plate 560, so as to stand up from each side of the pentagonal bottom plate 520. And an outer plate 570 is provided. It should be noted that each side of the bottom plate 520 may be bent vertically, and the adjacent side plates may be connected to each other by welding or the like.

The inner plate 530 is arranged along the upper opening 210, the adjacent side plate 540 is arranged so as to be in contact with the left reinforcing member 510, the gate side plate 550 is arranged so as to be in contact with the gate pillar 400, and the middle side plate 560 is arranged so as to be in contact with the middle pillar 410. Arranged so as to be in contact, the outer plate 570 is arranged along the insertion hole 420. The left reinforcing material 510 is the same as the right reinforcing material 500 because it is a symmetrical pentagonal plate material.

For each side plate, the side plates on each side of the bottom plate 520 are bent upward to form a roundness 580. The vacant upper surface side of the right reinforcing material 500 and the left reinforcing material 510 is connected to the lower surface of the upper deck plate 200 by welding or the like.

At this time, as shown in FIG. 3, when the inside is viewed from the insertion hole 420, the right reinforcing material 500 and the left reinforcing material 510 having a roundness 580 come out below the edge of the upper deck plate 200. Can be attached to. The roundness 580 prevents the edge of the upper deck plate 200 (such as burrs remaining on the cut surface) from being damaged by the roundness 580 when an operator inserts a hand or the like into the insertion hole 420 or when the photographing means passes through. Further, the photographing means entered from the insertion hole 420 may be guided straight toward the apex angle between the inner plate 530 and the adjacent side plate 540.

As shown in FIG. 7B, in the right reinforcing material 500, the inner plate 530 has the same length as the inner side wall 430 of the middle pillar 410 and has an angle of 150 degrees, and the right reinforcing material 500 is also included with the inner plate 530 of the right reinforcing material 510. The angle is preferably 150 degrees.

As shown in FIG. 8, the inner plate 530 of the right reinforcing member 500 and the left reinforcing member 510 and the inner side wall 430 of the middle pillar 410 are arranged so as to surround the upper opening 210 in a dodecagonal shape. Further, the positions of the inner side plate 530 of the right reinforcing material 500 and the left reinforcing material 510 and the inner side wall 430 of the middle pillar 410 are accommodated between the upper opening 210 and the guide 220. Since the outer circumference of the drum can 110 abuts along the inner wall of the guide 220 and the drum can 110 is placed on the mounting portion 230, it may be supported inside the outer circumference of the drum can 110.

Since the reinforcing material is supported by a dodecagonal linear plate material (inner plate 530 and inner side wall 430) instead of an arc shape, it is difficult to bend. Further, it is diagonally reinforced by the adjacent side plate 540 between the right reinforcing member 500 and the left reinforcing member 510 from the gate pillars 400 at the four corners toward the center of the opening. Since the plate material (adjacent plate 540) extending to the lateral side wall 440 of the middle pillar 410 and the gate pillar 400 radially protrudes from the opening to support it, the strength is further improved.

Next, the use of the pallet for drums according to the present invention will be described. FIG. 9 is a diagram showing a usage state of a drum pallet.

As shown in FIG. 9, the drum can 110 is placed on the drum pallet 100 according to the guide 220, and another drum pallet 100 is placed on the drum can 110 according to the offcuts 330. Repeat this several steps and store it side by side (front, back, left, right).

The drum can pallet 100 has an upper opening 210 and a lower opening 310, and it is possible to confirm the corrosion status of the lower surface of the upper drum 110 and the upper surface of the lower drum 110 from the insertion hole 420. If the upper opening 210 is widened, the mounting portion 230 becomes narrow, but the strength of the drum pallet 100 is maintained by the presence of the right reinforcing member 500 and the left reinforcing member 510.

According to the present invention, it is possible to secure the strength for receiving the load of the drum can while securing the opening for confirming the upper and lower surfaces of the drum can containing the radioactive waste. In addition, the reinforcing material is arranged in a well-balanced manner while securing a hole for inserting the claw in the pallet, so that the drum can can be stably placed even if the load is partially concentrated.

Although examples of the present invention have been described above, the present invention is not limited thereto. For example, when drums are stacked in multiple stages via a pallet, a small vehicle equipped with a camera can be remotely controlled using a hole for inserting a claw as a passage, and the lower surface of the upper drum can and the upper surface of the lower drum can be operated remotely. You may shoot.

100: Pallet for drum can 110: Drum can 200: Upper deck plate 210: Upper opening 220: Guide 230: Mounting part 300: Lower deck plate 310: Lower opening 320: Side surface 330: Scrap 340: Tapered part 350: Opening Surface 400: Gate pillar 410: Middle pillar 420: Insert hole 430: Inner side wall 440: Side side wall 500: Right reinforcing material 510: Left reinforcing material 520: Bottom plate 530: Inner plate 540: Adjacent side plate 550: Gate side plate 560: Middle side plate 570: Outer plate 580: Roundness

Claims (5)

An upper deck plate with a circular upper opening and
The lower deck plate, which has a lower opening and is arranged so as to face the upper deck plate,
The gate pillars interposed at the four corners of the upper deck plate and the lower deck plate in order to secure a space between the upper deck plate and the lower deck plate.
A stele arranged between the gate pillars at both ends so that two insertion holes are formed on each side of the upper and lower deck plates.
When the upper opening is viewed from the gate pillar, the right reinforcing material attached to the lower surface of the upper deck plate to reinforce the space between the right adjacent middle pillar and the right reinforcing material.
It has a left reinforcing material attached to the lower surface of the upper deck plate to reinforce the space between the gate pillar and the middle pillar on the left side of the gate pillar.
The inner plates of the left and right reinforcing materials and the inner side walls of the middle pillar are arranged so as to surround the upper opening in a dodecagonal shape.
A pallet for drums that is characterized by this. The upper deck plate is provided with a guide on the upper surface thereof so that a drum can can be placed on the edge of the upper opening.
The positions of the inner plates of the left and right reinforcing members and the inner side walls of the middle pillar are set between the upper opening and the guide.
The pallet for a drum can according to claim 1. When the adjacent side plate of the right reinforcing material and the adjacent side plate of the left reinforcing material are arranged so as to be in contact with each other, the right reinforcing material and the left reinforcing material are pentagonal plate materials symmetrical with respect to the adjacent side plate. The side plate of the side is bent upward to form a roundness, and it is attached so as to protrude below the upper deck plate.
The pallet for drums according to claim 1 or 2, wherein the pallet is characterized by the above. The lower deck plate is larger in size than the upper deck plate, has side end strength, and has scraps with a tapered portion for positioning when placed on a drum can.
The pallet for drums according to any one of claims 1 to 3, wherein the pallet is characterized by the above. The insertion hole is provided so that the means for photographing the drum can can pass through the upper opening or the lower opening.
The pallet for drums according to any one of claims 1 to 4, wherein the pallet is characterized by the above.

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