JPH10273199A - Device for hanging and handling upper part opened container and for discharging contents of upper part opened container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge the contents of a container by remotely handling the container which is provided in an area, to which it is hard for one to access, such as an area in a nuclear fuel reprocessing plant. SOLUTION: The hanging and handling device 10 for remotely handling a bowl, which includes an engaging block on its outer peripheral surface of body and a skirt formed on its lower outer peripheral surface, has an annular body 20 which surrounds a body of the bowl and is releasably connected to the engaging block, a pair of trunnions 13 projecting from the outer periphery of the body 20, eye plates 15 provided near the trunnions 13, a vertical guide structure 30 extending from the underside of the body 20, and a holding mechanism 40 in engagement with a skirt 5 movably supported on the structure 30, and the mechanism 40 has a take-in fitting 46 and the device is operated by a crane through the eye plates 15 and fitting 46.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote handling device for discharging contents in a cylindrical container or the like.

[0002]

2. Description of the Related Art In order to discharge dangerous substances contained in a container-like member therefrom, remote operation is desired. For example, in a nuclear fuel reprocessing facility that reprocesses spent fuel in light water reactors,
A washing tank for washing solid waste is provided, and a bowl for holding the solid waste is mounted therein. The bowl is a container-like member, but a simple structure is preferred due to its nature and manufacturing requirements. Fig. 9 shows an example of the bowl shape
Shown in As shown, the bowl 1 has a cylindrical shape,
A frame plate 3 is provided at the center of the body. Further, a skirt 5 is provided at a lower portion.

[0003]

The bowl 1
There may be a problem that the solid waste held in the inside is clogged therein. In such a case, it is necessary to take out the bowl 1 and discharge the clogged solid waste to the outside. However, since the washing tank is in a radiation atmosphere, it is preferable that an operator directly approaches to prevent exposure to radiation. Absent. Therefore, there is a demand for a device capable of performing such a work remotely. Accordingly, the present invention provides an apparatus for lifting and handling an open-top container which can easily access a container-like member in an atmosphere or a place where humans cannot easily access such as a radiation atmosphere, and can easily perform operations such as grasping and tilting. That is the task.

[0004]

According to the present invention, in order to solve the above-mentioned problems, according to the present invention, an upper open container having an engaging projection on the outer peripheral surface of a body and a skirt portion formed on a lower outer peripheral surface is remotely controlled. The lifting and handling device for handling includes an annular body surrounding the body and detachably connected to the engagement projection, a pair of trunnions protruding from an outer peripheral portion of the annular body, and a first trunnion provided near the trunnion. A hanging member connecting member, a vertical guide structure extending downward from a lower surface of the annular main body, and a holding mechanism movably pivotally supported by the vertical guide structure and engaging with a skirt portion. It is configured to include a second hanging member connecting member, and is operated by the lifting device via the first and second hanging member connecting members. Preferably, the first hanging member connecting member is connected to the hanging member of the lifting device via a detachable intermediate connecting member, and the hanging member is also connected to the second hanging member connecting member. It is free. Further, a locking mechanism is provided in the vertical guide structure, and the upper opening container is prevented from performing relative rotation by fixing the engaging projection in the engaging position in conjunction with the upward movement of the holding mechanism. This prevents the upper open container from being detached from the lifting handling device. Further, the holding mechanism has a lock unit coupled to the vertical guide structure in conjunction with the upward movement of the second hanging member connecting member, and the holding mechanism is fixed to the vertical guide structure, and the upper opening container is opened. Preferably, the connection between the skirt and the holding mechanism is locked.

[0005]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the present embodiment, the container-like member having an open top handled is the bowl 1 described with reference to FIG. 9 described above. An engagement block 7 protrudes. The lifting and handling device for handling such a bowl 1 is a device that is integrally handled by a lifting device, that is, a crane, and its overall structure is shown in FIG. FIG.
In the above, the lifting handling device 10 comprises a counterweight 1 for generating a weight moment that balances the total weight moment of the annular main body 20, the vertical guide structure 30, the holding mechanism 40, and the total weight moment of the vertical guide structure 30 and the holding mechanism 40.
1, a pair of trunnions 13 and a hanger connecting member, that is, an eye plate 15. The annular main body 20 includes the annular body plate 2.
1. It mainly comprises a notched annular bottom plate 23 and a locking top plate 25 arranged at equal circumferential intervals and fixed to the annular body plate 21 at a position above the annular bottom plate 23. Locking top plate 2
5, a notch 27 is formed in the annular bottom plate 23 at a position offset in the circumferential direction by a circumferential angle α.
Is passed through the engaging block 7 of the bowl 1 without a large gap, and when the annular body 20 is relatively rotated by the circumferential angle α, the engaging block 7 comes to be directly below each locking top plate 25. .

[0006] The vertical guide structure 30 includes one locking top plate 2.
5 and a casing 31 integrally connected to the annular bottom plate 23 and a guide frame 33 integrally connected thereto.
The guide frame 33 includes a pair of side plates 35 and 37 as clearly shown in the cross-sectional view of FIG.
have. The side plates 35, 37 have oblong holes 35a, 37a extending vertically in the lower part, and the holding mechanism 40 is attached via these oblong holes 35a, 37a. The detailed structure is the upper shaft 41 of the holding mechanism 40 described later.
Is inserted through the oblong holes 35a and 37a, and the connecting rod 61 having the lower end connected and fixed thereto forms the locking mechanism 60 as follows. Specifically, as clearly shown in FIG. 4 which is a partial horizontal sectional view, a guide member 63 is attached to the opposite side plate of the casing 31, and a rotation preventing box 65 guided up and down by the guide member 63 is provided at the upper end of the connecting rod 61. Fixed. In such a locking mechanism 60, when the engagement block 7 of the bowl 1 is under the locking top plate 25,
If the rotation prevention box 65 rises and surrounds it, the rotation relative displacement of the engagement block 7 is prevented.

Next, referring to FIGS. 1, 5, 6, and 7, the structure and operation of the holding mechanism 40 will be described. The holding mechanism 40 located at the lower half of the perspective view of FIG. 1 is shown in a state where it is lifted by a crane and at an upper limit position as described later, and a vertical cross section corresponding to this position is shown in FIG. ing. A pair of rack guides 42, each of which is a substantially triangular side plate whose upper end is connected to the upper shaft 41, is integrated by a connecting plate, and a rack 43 is supported on the lower side of the rack guide 42. A pinion gear 44 meshing with the rack 43 is rotatably supported by a tip of a rack guide 42 via a shaft 45, and a second hanging member connecting member, that is, an alloyed product 46 is fixed between the pair of shafts 45. Have been. The roller 47 rotatably supported by the upper shaft 41 is
The rollers 4 are fitted in the oblong holes 35a, 37a of the side plates 35, 37 and are movable along the side plates 35, 37.
8 is pivotally supported at the lower part of the base end 42 a of the rack guide 42. Accordingly, the rack guide 42 is moved vertically along the oblong holes 35a and 37a in the postures shown in FIGS. 1, 5 and 6 with its allowable stroke.

Further, a holding arm 53 whose base end is pivotally connected to the guide frame 33 via a pin 51 has a locking piece 5
5 and enter the inside of the skirt 5 of the bowl 1 as described later. A rotatable operation arm 57 is interposed between the upper shaft 41 and a portion of the holding arm 53 slightly proximal to the locking piece 55. Therefore, the alloy 46
When the pulley case a is lifted by a hook of a crane and the holding mechanism 40 is moved upward, the operation arm 57 moves the holding arm 53 within a range where the lifting handling device 10 maintains the vertical posture. It is turned counterclockwise to reach the state shown in FIG. 5 at the upper limit position. When the lifting of the alloy alloy 46 by the crane is stopped, the rack guide 42 comes to the lowermost position and is in the state shown in FIG. 6, and the holding arm 53 and the operation arm 57 are rotated clockwise around the pin 51 by the moment of gravity. In a substantially vertical retracted position. When the rack guide 42 is further raised above the upper limit position, the lifting handling device 10, that is, the guide frame 33 is tilted as shown in FIG. Then, the relation angle between the rack 43 and the alloy 46 changes, and the pinion gear 44 rotates to lock the lock pin 49 formed at the tip of the rack 43 with the fixed cylinder 3 of the guide frame 33.
4 to fix the relative relationship between the vertical guide structure 30 and the holding mechanism 40.

Next, a procedure for discharging the contents of the bowl 1 using the lifting and handling apparatus 10 having the above-described configuration will be described. As shown in FIG. 8A, the bowl 1 is placed on the temporary table b. On the other hand, the hanging tool c is attached to the pulley case a suspended from the hook of the crane, and the hooking tool is attached to the eye plate 15 of the lifting handling device 10. Position. In this positioning, the notch 27 of the annular bottom plate 23 of the annular body 20 is positioned above the engagement block 7 of the bowl 1. Then, when the lifting handling device 10 is lowered as it is, the engagement block 7
It passes through the notch 27 and is on the annular bottom plate 23. Therefore,
When the pulley case a is rotated by the circumferential angle α (see FIG. 1), the locking top plate 25 comes directly above the engaging block 7. Next, as described above, the lifting handling device 10 holding the bowl 1 via the annular main body 20 is lifted by the crane together with the bowl 1, and is moved to just above the tilting table d as shown in FIG. 8B. Then, the trunnion 13 of the lifting handling device 10 is aligned with the receiving table of the tilting table d. Then, if the lifting handling device 10 is suspended as it is, FIG.
(C). As shown in FIG. 8C, the pulley case a is separated from the hanging tool c while the lifting handling device 10 is placed on the tilting table d, and the pulley case a is held by the holding mechanism 4.
Then, the rack guide 42 is connected to the zero alloyed object 46, and the rack guide 42 is pulled up to the upper limit position. As described above, the holding arm 53 of the holding mechanism 40 rotates counterclockwise, and the locking piece 55 at the tip enters under the skirt of the skirt 5 of the bowl 1.
Further, by pulling up the pulley head a connected to the alloy object 46 by a crane, the trunnion 13
As shown in FIG. 8D, the lifting and handling device 10 rotates and tilts. In this state, the rack guide 42 is connected to the guide frame 3 of the vertical guide structure 30 as described above.
It is fixed to 3. Finally, as shown in FIG. 8 (e), the upper opening of the bowl 1 is turned downward, and the residue f (also referred to as hull), which is solid waste contained therein, is discharged. Is collected.

[0010]

As described above, according to the present invention, the holding mechanism for holding the engaging projection of the upper opening container and holding the skirt thereof by the annular main body of the lifting handling device operated by the lifting device. Since the upper container is tilted by being lifted by the lifting device, the internal contents can be easily discharged and collected remotely. Furthermore, since the lifting transfer and lifting and tilting of the holding mechanism of the lifting handling device can be operated by the same lifting device, there is no need to change the lifting device of the crane, and a series of operations can be performed in a short time. Furthermore, according to the present invention, the container is locked in conjunction with the upward movement of the holding mechanism when the lifting and handling device is tilted, so that unexpected rotation can be prevented, and operational safety can be improved. Further, since the holding mechanism also locks the holding mechanism during the above-described tilting operation, unexpected movement of the upper opening container is prevented, and even though the operation is performed remotely using a crane, the handling operation is not performed. Reliability and safety can be maintained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire embodiment of the present invention.

FIG. 2 is an enlarged partial sectional view showing a part of FIG. 1;

FIG. 3 is a vertical sectional view taken along line III-III in FIG. 2;

FIG. 4 is a vertical sectional view taken along the line VI-VI of FIG. 2;

FIG. 5 is a partial cross-sectional view for explaining the operation of the embodiment.

FIG. 6 is a partial sectional view for explaining the operation of the embodiment.

FIG. 7 is a partial cross-sectional view for explaining the operation of the embodiment.

FIG. 8 is an explanatory diagram showing a procedure for explaining an operation of the embodiment.

FIG. 9 is a perspective view showing a position example of an upper opening container handled by the lifting handling apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bowl 5 Skirt 7 Engagement block 10 Lifting handling device 11 Counter weight 13 Trunnion 15 Eye plate 20 Annular main body 21 Annular body plate 23 Annular bottom plate 25 Locking top plate 27 Notch 30 Vertical guide structure 31 Casing 33 Guide frame 34 Fixed Cylinders 35, 37 Side plates 35a, 37a Oval hole 40 Holding mechanism 41 Upper shaft 42 Rack guide 43 Rack 44 Pinion gear 45 Shaft 46 Alloy alloy 47, 48 Roller 49 Lock pin 51 Pin 53 Holding arm 55 Locking piece 57 Operating arm Reference Signs List 60 Lock mechanism 61 Connecting rod 63 Guide member 65 Rotation prevention box a Pulley case b Temporary placing table c Hanging tool d Tilting table

Claims (5)

[Claims] 1. An apparatus for remotely handling an upper open container having an engagement protrusion on an outer peripheral surface of a body portion and a skirt portion formed on a lower outer peripheral surface, wherein the device surrounds the body portion and is detachable from the engagement protrusion. , A pair of trunnions protruding from an outer peripheral portion of the annular body, a first hanging member connecting member provided in proximity to the trunnion, and a vertical extending downward from a lower surface of the annular body. A guide structure and a holding mechanism movably pivotally supported by the vertical guide structure and engaging the skirt portion, the holding mechanism includes a second hanging member connecting member, and the first and the second A lifting handling device for an open-top container, wherein the lifting device is operated by a lifting device via a hanging member connecting member. 2. The method according to claim 1, wherein the first hanging member connecting member includes a detachable intermediate connecting member, and the intermediate connecting member and the second hanging member connecting member are freely connectable to the same hanging member. 2. The lifting and handling device for an open-top container according to claim 1, wherein 3. The device according to claim 2, further comprising a lock mechanism provided in said vertical guide structure to lock said engaging projection at an engaging position in conjunction with upward movement of said holding mechanism. 3. The lifting and handling device for an open-top container according to claim 1. 4. The holding mechanism according to claim 1, wherein the holding mechanism includes a lock unit that is coupled to the vertical guide structure in conjunction with the upward movement of the second hanging member connecting member. 3. The lifting and handling device for an upper open container according to 3. 5. An annular body of a lifting and handling device is connected to said engaging projection when discharging the internal contents of an upper open container having an engaging projection on an outer peripheral surface of a body and a skirt formed on a lower outer peripheral surface. Then, the upper open container and the lifting handling device are placed on a tilting stand via a trunnion projecting from the outer peripheral portion of the annular main body, and the holding mechanism of the lifting handling device connected to the skirt portion is lifted. A method of discharging the internal contents of the upper open container, wherein the upper open container is tilted by being pulled up by an apparatus.