Shielding box inside and outside transfer device

Abstract

The utility model relates to a shielding box inside and outside transfer device, and belongs to the technical field of nuclear industry transfer. The device comprises a storage rack arranged beside an overhaul door in an overhaul shielding door of the shielding box, and a material receiving rack which is positioned outside the shielding box and is in butt joint with the storage rack, a storage rack platform is supported on the storage rack, the storage rack platform and the storage rack form a horizontal moving pair in the direction perpendicular to the access door, and the storage rack platform and the material receiving frame form a separable moving pair in butt joint with the horizontal moving pair. Compared with the prior art, the device can be compactly arranged in a limited space, has a simple structure, is convenient to operate, can ensure the safety of operators, and is very suitable for batch transfer operation of radioactive substances.

Description

Technical Field

[0001] The utility model relates to a transfer device, in particular to an internal and external transfer device of a shielding box directly used in a radioactive plant, belonging to the technical field of nuclear industry transfer. Background Art

[0002] According to the applicant, the outer cup containing the radioactive material is stored in a shielded container and transported into the radioactive plant via a trolley. According to the predetermined process flow, when the hangers pre-stored on the shelf platform are used up during the transfer process, the hangers need to be refilled on the shelf platform for the subsequent transfer process to continue the cycle.

[0003] A search shows that the utility model patent document with the announcement number CN 220121499U discloses "An automatic nuclear waste transfer device", including a storage device, a shielding protection container and a sealed transfer barrel, wherein the sealed transfer barrel is arranged inside the cavity of the shielding protection container; a moving device, provided with a lateral motion driving member, used to align the storage device with the bottom of the hot chamber; a cover opening mechanism is arranged at the bottom of the hot chamber, used to open or close the protective door of the hot chamber and the cover of the storage device. The utility model designs the storage device and the moving device, and after the cover of the shielding protection container is opened, the lifting mechanism of the moving device lifts the sealed transfer barrel to the bottom of the hot chamber to automatically load the nuclear waste into barrels; at the same time, the barrel cover of the sealed transfer barrel is engaged and lifted and positioned by the dual encoder feedback technology, which can achieve high-precision positioning and eliminate stability problems related to mechanical compliance, clearance and sliding. However, the above technical solution can only realize the transfer of a single barrel, and the lifting movement is performed at the bottom of the chamber, and the batch transfer of barrels is not considered. Summary of the invention

[0004] The purpose of the utility model is to provide a shielding box internal and external transfer device suitable for batch transfer in view of the defects of the above-mentioned prior art.

[0005] In order to achieve the above-mentioned purpose, the basic technical scheme of the inside and outside transfer device of the utility model of the shielding box is: it includes a shelf arranged next to the inspection door inside the shielding door of the shielding box, and a material receiving rack located outside the shielding box and docked with the shelf; the shelf supports a shelf platform which forms a horizontal movable pair in the direction perpendicular to the inspection door, and the shelf platform and the material receiving rack form a detachable movable pair docked with the horizontal movable pair.

[0006] A further improvement of the utility model is that a guide rail is fixed on the shelf, and the material receiving rack and the shelf are respectively provided with spaced bull's eye ball bearings, the lower surface of the shelf platform is supported on the bull's eye ball bearings, and is fixedly connected with a slider that forms a moving pair with the guide rail.

[0007] A further improvement of the utility model is that both ends of the guide rail are respectively provided with a box entry limit stopper and a box exit limit stopper.

[0008] A further improvement of the utility model is that a limit frame matching the bottom of the hanger is fixed at intervals on the table top of the shelf platform, and a pull ring is installed at the outer end.

[0009] A further improvement of the utility model is that the material receiving frame is composed of an upper movable frame with rollers and a lower height-adjustable adjustment frame.

[0010] During operation, when the hangers pre-stored on the shelf platform enter the factory building after the transfer process is completed, open the inspection shielding door and inspection door of the shielding box, pull the shelf platform to slide along the guide rail and the bull's eye ball bearing to the material receiving rack outside the shielding box, when the slider hits the stopper and reaches the specified position outside the shielding box, after the hangers are filled, manually push them back to the initial position in the shielding box, reach the specified position inside the shielding box, and then close the inspection door and inspection shielding door.

[0011] Compared with the prior art, the utility model can be compactly arranged in a limited space, has a simple structure, is easy to operate, can ensure the safety of operators, and is very suitable for batch transportation operations of radioactive materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings.

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0014] Figure 2 yes Figure 1 Top view of the .

[0015] Figure 3 yes Figure 1 A side view of an embodiment shelving platform and shelves.

[0016] Figure 4 yes Figure 1 Partial top view of an embodiment pull-out shelving platform.

[0017] In the figure: guide rail 1, shelf platform 2, bull's eye ball bearing 3, shelf 4, material receiving rack 5, slide block 6, inlet limit block 7, outlet limit block 8, maintenance shielding door 9, maintenance door 10, shielding box 11, hanger 12, limit frame 21, pull ring 22, table top 23, adjustment frame 51, movable frame 52. DETAILED DESCRIPTION Example

[0018] The shielding box involved in this embodiment is arranged with a large number of automatic processing equipment for completing the removal, identification, storage, circulation, etc. of radioactive materials. In the process of batch processing of radioactive materials, after the boxes or hangers stored in the shielding box for storing and transferring radioactive materials are used up, it is necessary to open the inspection shielding door and inspection door of the shielding box, and use a set of shielding box internal and external transfer devices to transfer a group of boxes or hangers from outside the shielding box to inside the shielding box, so as to ensure the continuous operation of the batch process. Due to the limited space in the shielding box and the particularity of radioactive materials, the design of the transfer device must take the following factors into consideration: 1) Limited by the height of the access door and the spatial position of the shielding box, the transfer device should be small and simple, able to pass through the door when transferring the material box or hanger, and occupy little space in the shielding box after closing the access door; 2) Since the automatic processing flow of radioactive materials requires high positioning accuracy and repeatability, the positioning accuracy and repeatability of the material box or hanger after it is transferred into the box are also required to be high; 3) The time it takes for operators to enter the radioactive plant, open the access door, and complete the loading and transfer of material boxes or hangers into the box should be as short as possible to ensure the safety of the operators.

[0019] The shielding box internal and external transfer device that meets the above requirements is as follows: Figure 1 and Figure 2 as well as Figure 4 As shown, an inspection door 10 is installed inside the inspection shielding door 9 of the shielding box 11. A shelf 4 located inside the shielding box 11 is arranged on one inner side of the inspection door 10. A material receiving rack 5 docked with the shelf 4 is arranged outside the shielding box 11.

[0020] See also Figure 3 , the table top 23 of the shelf platform 2 is fixed with a limit frame 21 that matches the bottom of the hanger 12 at intervals, and a pull ring 22 is installed on the outer end. The central guide rail 1 is fixed on the shelf 4 in the direction perpendicular to the inspection door, and the cross-section of the guide rail 1 is in the shape of an "I". The receiving rack 5 and the shelf 4 are respectively equipped with spaced-apart bull's eye ball bearings 3. The lower surface of the shelf platform 2 is supported on the bull's eye ball bearing 3, and a slider 6 that is adapted to form a moving pair with the guide rail 1 is fixedly connected, so that the shelf platform 2 and the shelf 4 form a horizontal moving pair, and the receiving rack 5 can also form a detachable moving pair that docks with the horizontal moving pair as needed. The two ends of the guide rail 1 are respectively equipped with a box entry limit block 7 and a box exit limit block 8.

[0021] The receiving frame 5 is composed of an upper movable frame 52 with rollers and a lower height-adjustable adjusting frame 51 .

[0022] The transfer process of the transfer device inside and outside the shielding box of this embodiment is as follows:

[0023] When the hangers pre-stored on the shelf platform 2 in the shielding box 11 are used up with the radioactive material processing process, a person enters the plant and opens the inspection shielding door 9 and the inspection door 10 of the shielding box 11. The shelf platform 2 slides along the guide rail 1 and the bull's eye ball bearing 3 to the material receiving rack 5 outside the shielding box 11 under the pull ring 22 held by the person, until the slider 6 hits the box exit limit block 8 and is pulled out to stop (such as Figure 4 as shown).

[0024] After manually loading a set of hangers 12 into the guide limit frame 21, manually hold the pull ring 22 to push the shelf platform 2 and a set of hangers 12 along the guide rail 1 and the bull's eye ball bearing 3 to slide into the shielding box 11 until one end of the platform 22 hits the box entry limit stopper 7 and pushes it back to stop (such as Figure 2 Close the inspection door and inspection shield door, and a transfer process is completed.

[0025] Experiments have shown that the shielding box internal and external transfer device of this embodiment is compactly arranged in a limited space, and uses a single slide rail and a single guide rail for transmission. It has the advantages of simple structure, easy operation, and ensuring the safety of operators, and effectively meets the needs of transferring radioactive materials inside and outside the shielding box.

Claims

1. A shielding box internal and external transfer device, characterized in that: The invention comprises a shelf (4) arranged beside an inspection door (10) inside an inspection shielding door (9) of a shielding box (11), and a material receiving rack (5) located outside the shielding box (11) and docked with the shelf (4); the shelf (4) supports a shelf platform (2) which forms a horizontal movable pair in a direction perpendicular to the inspection door, and the shelf platform (2) and the material receiving rack (5) form a detachable movable pair docked with the horizontal movable pair.

2. The shielding box internal and external transfer device according to claim 1, characterized in that: A guide rail (1) is fixed on the shelf (4), and the receiving rack and the shelf are respectively provided with spaced-apart bull's eye ball bearings (3). The lower surface of the shelf platform (2) is supported on the bull's eye ball bearings (3) and is fixedly connected with a slider (6) that forms a moving pair with the guide rail.

3. The shielding box internal and external transfer device according to claim 2, characterized in that: Both ends of the guide rail are respectively provided with a box entry limit stopper (7) and a box exit limit stopper (8).

4. The shielding box internal and external transfer device according to claim 3, characterized in that: A limiting frame (21) matching the bottom of the hanger (12) is fixed at intervals on the table top (23) of the shelf platform, and a pull ring (22) is installed at the outer end.

5. The shielding box internal and external transfer device according to claim 4, characterized in that: The material receiving frame is composed of an upper movable frame (52) with rollers and a lower height-adjustable adjustment frame (51).

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