JPS6244240B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an automatic drum lid system for automatically and safely and reliably sealing the lid of a drum filled with hazardous industrial waste such as radioactive waste, solid waste, chromium-containing waste, etc. This relates to a sealing device.

For example, radioactive waste generated from nuclear power plants and other hazardous industrial wastes such as waste sludge generated from Metsuki factories are generally stored and disposed of by being filled into drums to prevent pollution from leaking into the environment.

Conventionally, in order to seal the lid of a drum filled with these hazardous industrial wastes, the lid was placed on the drum, a band was wrapped around the drum, and the bolts attached to the band were manually tightened using a tool. Alternatively, methods such as tightening the bolts with an electric nut runner are used. However, with this conventional sealing method, workers must close the drums close to the drums filled with hazardous industrial waste, which may expose the human body to harmful radiation or cause toxic There were problems such as the risk of inhaling substances.

The present invention solves these conventional problems and provides an automatic drum lid sealing device that automatically and safely and reliably closes the lid of a drum filled with hazardous industrial waste. .

That is, the present invention provides an automatic drum lid sealing device having an alignment mechanism that automatically aligns itself according to the position of the drum, in which a holder for holding the drum lid is connected to a support arm that moves by the alignment mechanism. At the same time, a spline shaft is fixedly held so as to be positioned above the outer periphery of the lid of the drum, and a first slider and a second slider connected by a cylinder are slidably fitted onto the spline shaft. The first slider is fitted with a socket into which a bolt head is inserted for tightening the band wound around the drum lid, and a nut runner which rotates the socket, and the second slider is fitted with a bolt head. A supporting plate is fixed, and further,
A handle is fixed to one end of the spline shaft, and by moving the handle against the tensile force of the spring, the spline shaft is rotated to fit the bolt into the socket and the support plate, and to release the cylinder and nut runner. This automatic drum lid sealing device has a structure in which a bolt is used to automatically tighten a band wound around the drum lid during operation.

Hereinafter, a more detailed configuration of the present invention will be explained based on FIG. 1 and FIG. 2 showing one specific example.

Alignment that automatically aligns itself while moving back and forth with respect to the frame 3 by the action of the first cylinder 2, depending on the position of the drum 1 held in an upright position by a drum transfer device (not shown). A support arm 7 is connected to the alignment mechanism 4, which is movable up and down with respect to a vertical shaft 6 by the action of a second cylinder 5 and is pivotable around the vertical shaft 6. The lid 8 of the drum can 1 is mounted on the lower surface of the support arm 7.
For example, a plurality of, preferably three, electromagnetic type holders 9 are provided which are movable up and down relative to the support arm 7 with springs 10 in between. Further, a drum holding guide 11 that contacts the outer periphery of the drum 1 is provided at the lower end of the vertical shaft 6 so as to be rotatable with respect to the vertical shaft 6, and is connected to the support arm 7 via the second cylinder 5. ing. Furthermore, a spline shaft 12 is rotatably installed on the side of the support arm 7 by a frame 23 so as to be located above the outer periphery tangential direction of the lid 8 of the drum 1. A second slider 15 and a second slider 15 are respectively slidably fitted and connected by a third cylinder 13.

A bolt 1 for tightening a band 16 wound around the drum lid 8 is attached to the first slider 14.
A socket 18 into which the head of the bolt 7 is inserted and a nut runner 19 which rotates the socket 18 are rotatably provided.Furthermore, the second slider 15 supports a bolt 17 as shown in FIG. U
A letter-shaped support plate 20 is fixed. Furthermore, a handle 22 is fixed to one end of the spline shaft 12 for rotating the spline shaft 12 with respect to the frame 23 against the tensile force of the spring 21.

Note that the alignment mechanism 4 may, of course, have a structure other than the one shown in FIGS. 1 and 2.

The present invention is constructed as described above, and the automatic sealing device operates as follows.
Before the drum filled with waste is transferred by the transfer device to just below the sealing device, the lid 8 of the drum 1, around which the band 16 is wrapped around which the bolt 17 has been loosened, is covered with, for example, an electromagnetic It is suspended and held by a holder 9. Then, in this state, by pulling the handle 22 against the tensile force of the spring 21, the spline shaft 12 is rotated, and the first
The slider 14, second slider 15, etc. are rotated downward from the raised position shown by broken lines in FIG.
Next, the head of the bolt 17 is inserted into the socket 18, the bolt 17 is fitted and held in the U-shaped portion of the support plate 20, and the third cylinder 13 is actuated in the compression direction, so that the bolt 1 is inserted into the socket 18 and the support plate 20.
7 are set manually in advance so that they are in a fitted state.

When the drum 1 filled with waste is transferred by a drum transfer device (not shown) with the lid 8 left open and stopped directly below the sealing device, the first cylinder 2 is activated. As a result, the alignment mechanism 4 moves forward toward the drum 1,
When the drum holding guide 11 comes into contact with the side of the drum 1, it is pushed by the drum 1 and stops. In this case, even if there is some variation in the position of the drum 1, the sealing device can hold the drum 1 by holding the side of the drum 1 by the drum holding guide 11, which is rotatable with respect to the vertical shaft 6. automatically aligns and stops at the same position as the center of the

After the alignment is completed, the supporting arm 7 is lowered by the operation of the second cylinder 5, and the lid 8 of the drum can 1 suspended from the holder 9 is lowered at the same time. When it is covered, it is pushed by the drum 1 and stops. In this case, since the holder 9 is provided so as to be able to move up and down with respect to the support arm 7 with the spring 10 in between, even if the position of the drum 1 varies slightly in the vertical direction, the lid 8
is surely covered with the drum 1.

Next, by rotating the nut runner 19, the socket 18 is rotated, and by screwing the bolt 17 into the nut 24, the band 16 wound around the lid 8 of the drum can 1 is tightened. In this case, the third
Since a compressive force is applied to the cylinder 13, as the bolt 17 is screwed in, the cylinder 13 also contracts.

When the band 16 is sufficiently tightened and the rotational force of the nut runner 19 reaches a constant value, the rotation of the nut runner 19 is automatically stopped and the compression force of the third cylinder 13 is released. Slider 14 and second slider 15 open, and socket 18 and support plate 20 open accordingly.
is removed from the bolt 17 and the spring 21 attached to the handle 22 causes the handle 21, the first slider 14, the second slider 15, etc.
Return to the position indicated by the dashed line in the figure.

Then, the holding force of the holder 9 of the lid 8 is released, the support arm 7 is raised to the rising end position by the operation of the second cylinder 5, and the alignment mechanism 4 is further moved by the operation of the first cylinder 2. , the sealing operation of the lid 8 of the drum 1 is completed by retracting it to the retracted end position.

Incidentally, each of the above-mentioned operations is normally performed continuously by automatic operation for safety reasons, but of course, each operation may also be performed by a manual switch.

Since the present invention is an automatic drum lid sealing device as described above, it is possible to automatically and safely and reliably seal drum can lids filled with hazardous industrial waste by mechanical power rather than human power. can be,
There is no risk of damage from radioactive waste or various toxic heavy metals that are harmful to the human body, so it is safe to use for radioactive waste discharged from nuclear power plants in various places, waste sludge generated from the Metsuki factory, etc., or other human bodies. It can be used as an automatic sealing device for the lids of drums filled with hazardous industrial waste, etc., and is extremely useful from the standpoint of pollution prevention, hygiene, and industry.

[Brief explanation of the drawing]

FIG. 1 is an explanatory view showing a side view of a specific example of the automatic drum lid sealing device of the present invention, and FIGS.
The figure is an explanatory diagram partially showing the main parts of the apparatus shown in FIG. 1. DESCRIPTION OF SYMBOLS 1... Drum, 2... First cylinder, 3... Frame, 4... Aligning mechanism, 5... Second cylinder,
6... Vertical shaft, 7... Support arm, 8... Drum lid, 9
...Holder, 10...Spring, 11...Drum holding guide, 12...Spline shaft, 13...Third cylinder, 14...First slider, 15...Second slider, 16...Band, 17...Bolt, 18...Socket, 19...Nut runner, 20...Support plate, 21
...Spring, 22...Handle, 23...Frame, 24...Nut.

Claims (1)

[Claims] 1. In an automatic drum lid sealing device having an alignment mechanism 4 that automatically aligns itself according to the position of the drum 1, the support arm 7 moves by the alignment mechanism 4.
A holder 9 for holding the lid 8 of the drum can 1 is connected to the spline shaft 12 , and a spline shaft 12 is held so as to be located above the outer circumference of the lid 8 of the drum can 1 , and is connected to the spline shaft 12 by a cylinder 13 . The first slider 14 and the second slider 15 are slidably fitted together, and the head of a bolt 17 for tightening the band 16 wound around the drum lid 8 is inserted into the first slider 14. A socket 18 that rotates the socket 18 and a nut runner 1 that rotates the socket 18.
9 is attached to the second slider 15, and a support plate 20 for supporting the bolt 17 is fixed to the second slider 15. Furthermore, a handle 22 is fixed to one end of the spline shaft 12, and the handle 22 is held by a spring. The spline shaft 12 is rotated by moving against the tensile force of the socket 18.
And a drum can lid characterized by a structure in which a bolt 17 is fitted into a support plate 20 and a band 16 wound around a drum lid 8 is automatically tightened by the bolt 17 by operation of a cylinder 13 and a nut runner 19. Automatic sealing device.