JP4502300B2 - Moving system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a moving system for transporting a canister, which is provided below a melting furnace for radioactive miscellaneous solid waste.
[0002]
[Prior art]
Of radioactive radioactive solid waste generated from nuclear facilities such as nuclear power plants, most of the waste that cannot be incinerated is subjected to volume reduction processing that is melted in a high-temperature melting furnace. For this purpose, a refractory canister is usually used, and the material to be melted is fed into the canister and melted. When the melt is cooled and solidified together with the canister, the canister taken out below the melting furnace is conveyed to the cooling chamber by a conveyor.
[0003]
In the Japanese Patent Application No. 11-364729, the present applicant has made a proposal regarding a moving system including the conveyor. The system disclosed in this proposal will be described with reference to FIG. 6. First, a new empty canister (not shown) is transferred from the supply conveyor 11 onto the transfer conveyor 12, and then the canister 10 is transferred to the transfer conveyor 12. Is conveyed to a position directly below the center of the melting furnace 13.
[0004]
Next, the canister 10 is lifted up to the inside of the melting furnace 13 by the lifting device 14, and radioactive miscellaneous solid waste is fed into the canister 10 and melted. When the melting is completed, the canister 10 is lowered from the inside of the melting furnace 13 by the lifting device 14 and placed again on the transport conveyor 12. Thereafter, the canister 10 is moved and transported on the transport conveyor 12 to the cooling chamber 15.
[0005]
Such a conveyance conveyor 12 needs to be fixedly laid between the supply conveyor 11 and the cooling chamber 15. Further, when the canister is transported on the transport conveyor 12, the traveling cart 16 loaded with the fall prevention device must be installed so as to travel along the transport conveyor 12 following the canister 10, In addition, there is a problem that the equipment cost increases, for example, the traveling guide rail (not shown) has to be laid.
[0006]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-mentioned problems, and relates to a moving system for transporting a canister, which is provided below a melting furnace for radioactive miscellaneous solid waste. Provided is a moving system capable of reducing costs and including a moving carriage provided with an elevating mechanism and effectively preventing the canister from falling in an elevating operation or a horizontal moving operation.
[0007]
[Means for Solving the Problems]
The above problem is a moving system including a moving carriage that receives a canister from a previous process, puts it in a melting furnace disposed above, and then sends the canister taken out from the melting furnace to a subsequent process, On the upper surface of the movable carriage, there is a conveyor device that allows the placed canister to move in the horizontal direction and can be moved up and down while the canister is placed, and stands on both the left and right sides of the movable carriage. On the installed column, the tipping prevention member at the tip of the open / close arm is attached to the canister from both sides to attach the tipping prevention member that prevents the canister while the carriage is moving. book of a fall preventing member tip is brought close to the side of the canister during the lifting, characterized in that a fall prevention device for preventing the overturning of the canister during the lifting By Ming mobile system, it can be solved.
[0008]
Moreover, in the moving system of this invention , the said conveyor apparatus can be embodied in the form which is supported by the raising / lowering apparatus of a pantograph structure, and can be raised-lowered .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment according to a moving system including a moving carriage provided with the lifting mechanism of the present invention will be described with reference to FIGS.
As illustrated in FIG. 1, the moving system of the present invention uses a moving carriage 2 that transports the canister 10 as a main device, and receives the canister 10 from a previous process, for example, a supply conveyor 3 a, as described below. The canister 10 charged into the arranged melting furnace 4 and then taken out from the melting furnace 4 is sent out to a subsequent process, for example, the cooling chamber 5.
[0010]
A feature of the present invention is that the canister 10 placed on the upper surface of the movable carriage 2 can be moved in the horizontal direction and can be moved up and down while the canister 10 is placed. 3 and the moving carriage 2 itself including the conveyor device 3 is movable in the horizontal direction.
[0011]
In order to make the placed canister 10 movable in the horizontal direction, for example, a so-called roller conveyor device in which a number of heat-resistant rollers 31 that can rotate is arranged in parallel as shown in the figure of the conveyor device 3 is provided. That's fine.
Further, in order to enable the conveyor device 3 to be lifted and lowered with the canister 10 placed thereon, for example, the conveyor device 3 can be embodied by being supported by a lift device having a pantograph structure.
[0012]
An example of the lifting device will be described with reference to FIGS. 2 and 3 (side view). The lifting device 6 shown in FIG. In the same manner, the lower X-shaped members are stacked in the same manner with the same-length beam members 63, 63, and the upper ends of the beam members 61, 61 and the lower ends of the beam members 63, 63 are pivoted. I wear it. Further, the upper end portions of the upper beam members 63 and 63 are pivotally attached to the upper horizontal member 22, and the lower end portions of the lower beam members 61 and 61 are connected to the base horizontal member on the movable carriage 2 side. 21. Further, one upper end portion 66 of the beam member 63 and one lower end portion 65 of the beam member 61 are pivotally attached to be freely movable in the horizontal direction, and the upper horizontal member 22 moves. It is formed so as to be able to move up and down while maintaining the horizontal on the carriage 2, and as shown in FIG. 3, in the lifting device 6, a pair of lifting mechanisms are provided on the left and right. The conveyor device 3 is supported directly or indirectly by the upper horizontal member 22.
[0013]
In order to move the lifting device 6 up and down, the upper horizontal member 22 may be pushed up or pulled down by timely means. In the illustrated example, the lifting device 6 is fixed to the pivot shaft 62 at an intermediate position between the beam members 61 and 61. By moving the lifting drive shaft 67a sandwiched between the beam members 61 and 61 on the opposite side by the driven motor 67, the lifting device 6 is set to expand and contract to be lifted.
[0014]
In the illustrated mechanism, when the drive shaft 67a is pulled toward the drive motor 67, the holding angle by the beam members 61 and 61 opens, so that the upper horizontal member 22 is pushed up. If it moves away from the drive motor 67 side, the upper horizontal member 22 will be lowered by its own weight. As described above, this apparatus has an advantage that it can be moved up and down by a relatively simple means.
2 and 3 show a state in which the canister 10 is pushed up and completely fed into the melting furnace 4 by the lifting device 6, and FIG. 1 shows a state in which the lifting device is lowered. It is.
[0015]
Next, the features of the present invention will be further explained. The movable carriage 2 of the present invention is such that the conveyor device 3 that can be moved up and down is loaded, and that it can move in the horizontal direction. It is. For example, as illustrated in FIGS. 1 and 3, the moving carriage 2 is provided with wheels 23 to 23 on the front, rear, left and right, and two guide rails 24 laid from the place of the supply conveyor 3 to the cooling chamber 5, It is possible to move forward and backward in the horizontal direction on 24. As shown in the figure, this moving operation may be set so as to move forward or backward by a drive chain 26 connected to a drive device 25 provided outside, and a drive device (not shown) mounted on the mobile carriage 2 itself. It may be possible to move the
[0016]
Thus, the canister 10 is received from the supply conveyor 3a in the previous process, and the canister 10 is lifted and loaded into the melting furnace 4 disposed above, and after the melting process is completed, the canister 10 containing the melt is removed from the melting furnace 4. Then, the canister 4 can be transported to the subsequent cooling chamber 5 and sent out.
[0017]
Next, the fall prevention means of the canister 10 in the present invention will be described.
In the moving system of the present invention, it is preferable that the moving carriage 2 provided with the lifting mechanism 6 is provided with means for preventing the canister 10 placed on the moving carriage 2 being moved from falling. For example, in FIG. 4, support columns 71 and 71 are erected on both the left and right sides of the movable carriage 2 so that the tip end portion of the canister 10 having the overturning suppressing members 72 and 72 can be approached and separated from both sides to the central canister 10 side. The open / close arms 73 and 73 are attached.
[0018]
The open / close arms 73 and 73 are set so that the cylinder drive devices 74 and 74 can open and close the overturning suppression members 72 and 72 at the tip portions as indicated by solid lines and chain lines in the drawing. . Thus, since the fall prevention devices 7 and 7 are fixed to the movable carriage 2 and can support the canister 10 that is about to fall, the prevention effect can be reduced as compared with the traveling method described in the section of the prior art. However, there is an advantage that equipment costs can be reduced.
[0019]
Furthermore, in the moving system of the present invention, it is preferable to provide an overturn prevention means disposed immediately below the melting furnace 4 and close to the side surface of the canister 10 during the lifting operation. For example, in FIG. 5, which is a plan view, a pair of opening / closing arms 82, 82 having the tipping prevention members 81, 81 of the canister 10 at the front end portion are extended from the side of the movable carriage 2, The fall prevention device 8 of the present invention can be realized by making the canister 10 close to and away from the canister 10 side.
[0020]
The open / close arms 82, 82 of the fall prevention device 8 are indicated by the cylinder drive device 83 provided on the column outside the device, with the tipping over fall prevention members 81, 81 indicated by solid lines and chain lines in the figure. It can be opened and closed. Thus, the overturn prevention device 8 can effectively prevent the canister 10 from overturning during the elevation. It should be noted that immediately before the ascending end point of the canister 10 or immediately after the descent starts, the conveyor device portion such as the upper horizontal member 22 interferes with the open / close arms 82 and 82 of the overturn preventing device 8. It is better to keep it open as indicated by the chain line. In this case, since the canister 10 itself is inserted into the melting furnace, there is no problem in preventing overturning.
[0021]
【The invention's effect】
Since the moving system of the present invention includes the moving carriage provided with the lifting mechanism as described above, the equipment cost can be greatly reduced as compared with the conventional fixed conveyor system. In addition, there is an excellent effect that it is possible to effectively prevent the canister from falling down in a lifting operation or a horizontal movement operation. Therefore, the present invention has extremely great practical value as a mobile system that has solved the conventional problems.
[Brief description of the drawings]
FIG. 1 is a side view of an essential part for explaining a mobile system of the present invention.
FIG. 2 is a side view of a main part for explaining an elevating device for a moving carriage.
FIG. 3 is a front view of the relevant part.
FIG. 4 is a front view of an essential part showing a fall prevention device during horizontal movement.
FIG. 5 is a plan view of an essential part showing a fall prevention device during ascent and descent;
FIG. 6 is a side view of an essential part for explaining a mobile system prior to the present invention.
[Explanation of symbols]
10 canister, 2 moving carriage, 21 base horizontal member, 22 upper horizontal member, 3 conveyor device, 3a supply conveyor, 31 rollers, 4 melting furnace, 5 cooling chamber, 6 lifting device, 61 beam material, 62 pivot shaft , 63 Beam material, 65 lower end, 66 upper end, 67 drive motor, 67a lifting drive shaft.

Claims (2)

A moving system including a moving carriage that receives a canister from a previous process, charges the canister placed above, and then sends the canister taken out of the melting furnace to a subsequent process, on the upper surface of the moving carriage Is equipped with a conveyor device that can move the mounted canister in the horizontal direction and move up and down while the canister is mounted, and on the right and left sides of the moving carriage. Mount the fall prevention member at the tip of the open / close arm close to the canister from both sides to prevent the canister while the carriage is moving, and attach the fall prevention member directly below the melting furnace. A moving system comprising a fall prevention device for causing a member to approach a side surface of a canister that is being lifted and preventing the canister from being lifted . 2. The moving system according to claim 1, wherein the conveyor device is supported by a lifting device having a pantograph structure and can be lifted and lowered .

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