Source frame anti-collision device

Abstract

The utility model discloses an anti-collision device for a source frame, which relates to the technical field of industrial irradiation devices and comprises a lower support, a source sleeve installed on the upper surface of the lower support and an upper support sleeved above the source sleeve, a lower fixing seat is connected to the outer side wall of the lower support, a sliding groove is formed in the lower fixing seat, and the sliding groove is communicated with the source sleeve. A connecting groove is formed in the position, located on one side of the sliding groove, in the lower fixing base, a sliding block is arranged in the sliding groove, and a protection plate is connected to the side wall of the side, away from the connecting groove, of the sliding block. According to the utility model, the lower fixing seat and the protection plate are arranged, and the protection plate extends out of the sliding chute, so that all source sleeves which are arranged in the circumferential direction can be protected, and the source sleeves are effectively prevented from being deformed or damaged due to collision; by arranging the upper fixing base, the inclined block and the limiting block, the upper fixing base can be clamped through the limiting block, the source sleeve is stably sleeved with the upper support, synchronous connection of the upper support through extension of the protection plate is achieved, and additional installation operation is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial irradiation devices, in particular to a source rack anti-collision device. Background Technique

[0002] A source rack is a device used for hermetically storing radioactive nuclide source rods in the field of industrial irradiation. Existing source racks are usually divided into three types according to their shapes: linear, hollow cylindrical, and flat. Among them, the hollow cylindrical source rack consists of a circular upper bracket, a lower bracket, and a source sleeve. The top of the source sleeve is movably sleeved with the upper bracket. By placing one or more radioactive nuclide source rods in the source sleeve made of stainless steel, multiple source sleeves are arranged circumferentially and equidistantly according to the specific requirements of the irradiation field to form a hollow cylindrical shape.

[0003] During the process of storing radioactive nuclide source rods in the existing source rack, the source sleeve is prone to being collided due to the influence of the industrial environment. The collision of the source sleeve is likely to cause deformation or even damage. Once damaged, the internal source rod will lose the sealed environment and cause radioactive leakage. There is a lack of an effective device for protecting the source sleeve from collision to prevent it from being damaged. Content of the Utility Model

[0004] The purpose of the utility model is to provide a source rack anti-collision device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A source rack anti-collision device includes a lower bracket, a source sleeve installed on the upper surface of the lower bracket, and an upper bracket sleeved above the source sleeve. A lower fixing seat is connected to the outer side wall of the lower bracket. A chute is opened inside the lower fixing seat. A connecting groove is opened on one side of the chute inside the lower fixing seat. A slider is arranged inside the chute. A protective plate is connected to the side wall of the slider away from the connecting groove. A dial block penetrates through the side wall of the lower fixing seat and is connected to the outer side wall of the slider. An upper fixing seat is connected to the outer side wall of the upper bracket. A slot is opened at the bottom of the upper fixing seat. A limiting groove is opened on one side of the slot. A groove is opened at the top of the protective plate. An active block is arranged inside the groove. A spring is connected between the bottom of the active block and the bottom surface of the groove. An inclined block is connected to the top of the active block. A limiting block is connected to one side of the inclined block.

[0006] Preferably, the lower fixing seat is in the shape of a rectangular plate with a sector-shaped cross-section. The number of the lower fixing seats is three, and they are arranged circumferentially and equidistantly along the outer side wall of the lower bracket. The inner side wall of the top of the lower fixing seat is in contact with the outer side wall of the upper bracket.

[0007] Preferably, the width dimension of the inner wall of the chute is adapted to the width dimension of the slider. The slider is slidably connected to the inner wall of the chute. The dial block is in the shape of a T, and the dial block penetrates through the side wall of the lower fixing seat and is connected to the slider.

[0008] Preferably, the protective plate is in the shape of a rectangular plate with a sector-annular cross-section. One side of the protective plate is integrally connected to the slider, and the other side of the protective plate is movably inserted into the connecting groove.

[0009] Preferably, the upper fixing seat is in the shape of a sector ring. The number of the upper fixing seats is three, and they are arranged circumferentially and equidistantly along the outer wall of the upper bracket. The upper fixing seat and the lower fixing seat are offset in the vertical direction, and the sector angle of the upper fixing seat is smaller than that of the lower fixing seat.

[0010] Preferably, the movable block is in the shape of a sector ring. The top of the movable block is integrally connected to the inclined block and the limiting block. The movable block, the inclined block and the limiting block are all slidably connected to the inner wall of the groove.

[0011] Preferably, the inclined block and the limiting block are both movably inserted into the slot. One side of the slot far away from the limiting groove is inclined, and the limiting block is inserted into the limiting groove.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For the anti-collision device of the source rack, by setting the lower fixing seat and the protective plate, by dialing counterclockwise, the dialing block drives the slider to slide in the chute, and the slider drives the protective plate to move, so that the protective plate extends out of the chute until the side of the protective plate far away from the slider is inserted into the connecting groove in the adjacent lower fixing seat, so that the protective plate seals the gap between two adjacent lower fixing seats. After the protective plates in the three lower fixing seats all extend out, all the source sleeves arranged circumferentially are protected, which can effectively prevent the source sleeves from being deformed or damaged due to collision, and the protective plate can be retracted into the lower fixing seat, which is convenient for inserting the source rod into the source sleeve.

[0014] 2. For the anti-collision device of the source rack, by setting the upper fixing seat, the inclined block and the limiting block, while the protective plate is pulled out of the chute, the protective plate drives the inclined plate and the limiting block to move. When the groove is pulled out of the chute, the top of the limiting block loses the limiting effect of the inner wall of the chute. At this time, the spring rebounds and pushes the movable block to move up in the groove. The movable block drives the limiting block to move up through the inclined block, so that the inclined block and the limiting block are inserted into the slot at the bottom of the upper fixing seat. As the protective plate continues to be pulled out, the protective plate drives the inclined block and the limiting block to move in the slot until the limiting block is inserted into the limiting groove, and the limiting block clamps the upper fixing seat, so that the upper bracket is stably sleeved on the source sleeve, realizing the synchronous connection of the upper bracket by using the expansion of the protective plate, without additional installation operation. Description of the Drawings

[0015] Figure 1 It is a schematic top-sectional view of the lower fixing seat of the present utility model;

[0016] Figure 2Schematic diagram of the bottom structure of the upper fixing seat of the present utility model;

[0017] Figure 3 Schematic diagram of the partial cross-sectional structure of the front of the present utility model;

[0018] Figure 4 Schematic diagram of the protective plate structure of the present utility model.

[0019] In the figure: 1, lower bracket; 2, upper bracket; 3, source sleeve; 4, lower fixing seat; 5, sliding groove; 6, connecting groove; 7, slider; 8, protective plate; 9, dial block; 10, upper fixing seat; 11, slot; 12, limiting groove; 13, groove; 14, movable block; 15, spring; 16, inclined block; 17, limiting block. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] Such as Figures 1 to 4As shown in the figure, the anti-collision device for the source holder in this embodiment includes a lower bracket 1, a source sleeve 3 installed on the upper surface of the lower bracket 1, and an upper bracket 2 sleeved above the source sleeve 3. A lower fixing seat 4 is connected to the outer side wall of the lower bracket 1. The lower fixing seat 4 is installed on the outer side wall of the lower bracket 1 by screws. A chute 5 is opened inside the lower fixing seat 4. A connection groove 6 is opened on one side of the chute 5 inside the lower fixing seat 4. The connection groove 6 communicates with the chute 5. The width dimension of the connection groove 6 is smaller than that of the chute 5. A slider 7 is arranged inside the chute 5. A protective plate 8 is connected to the side wall of the slider 7 away from the connection groove 6. During the process of pulling the protective plate 8 out of the chute 5, the slider 7 is used to limit it to prevent the protective plate 8 from detaching from the chute 5. A dial block 9 is connected to the outer side wall of the slider 7 through the side wall of the lower fixing seat 4. A through groove for the movement of the dial block 9 is opened on the outer side wall of the lower fixing seat 4, and this through groove communicates with the chute 5. An upper fixing seat 10 is connected to the outer side wall of the upper bracket 2. The upper fixing seat 10 is installed on the outer side wall of the upper bracket 2 by screws. A slot 11 is opened at the bottom of the upper fixing seat 10. A limiting groove 12 is opened on one side of the slot 11. A groove 13 is opened at the top of the protective plate 8. A movable block 14 is arranged inside the groove 13. A spring 15 is connected between the bottom of the movable block 14 and the bottom surface of the groove 13. The spring 15 is in a normal stretched state when the movable block 14 is at the uppermost position in the groove 13. An inclined block 16 is connected to the top of the movable block 14. A limiting block 17 is connected to one side of the inclined block 16.

[0023] Specifically, the lower fixing seat 4 is a rectangular plate with a sector-annular cross-section. The number of the lower fixing seats 4 is three, and they are arranged circumferentially and equidistantly along the outer side wall of the lower bracket 1. The inner side wall of the top of the lower fixing seat 4 is in contact with the outer side wall of the upper bracket 2. The height of the lower fixing seat 4 is higher than the distance between the lower bracket 1 and the upper bracket 2.

[0024] Furthermore, the inner wall width dimension of the chute 5 is adapted to the width dimension of the slider 7. The slider 7 is slidably connected to the inner wall of the chute 5. By turning the dial block 9 counterclockwise, the dial block 9 drives the slider 7 to slide in the chute 5. The dial block 9 is in a T shape. The dial block 9 passes through the side wall of the lower fixing seat 4 and is connected to the slider 7. The dial block 9 facilitates pushing the slider 7 to slide in the chute 5 by hand.

[0025] Furthermore, the protective plate 8 is a rectangular plate with a sector-annular cross-section. One side of the protective plate 8 is integrally connected to the slider 7. The protective plate 8 is pulled out of the chute 5 until the side of the protective plate 8 away from the slider 7 is inserted into the connection groove 6 inside the adjacent lower fixing seat 4, so that the protective plate 8 seals the gap between two adjacent lower fixing seats 4. After the protective plates 8 in all three lower fixing seats 4 extend out, all the source sleeves 3 arranged circumferentially are protected, effectively avoiding deformation or damage of the source sleeves 3 due to collision. The other side of the protective plate 8 is movably inserted into the connection groove 6. By inserting the side of the protective plate 8 away from the slider 7 into the connection groove 6, the gap between the protective plate 8 and the lower fixing seat 4 is avoided, maintaining the comprehensiveness of the protection.

[0026] Furthermore, the upper fixing seat 10 is in a sector ring shape, and the number of the upper fixing seats 10 is three, and they are arranged at equal circumferential intervals along the outer wall of the upper bracket 2. The upper fixing seat 10 and the lower fixing seat 4 are staggered in the vertical direction. The position of the upper fixing seat 10 corresponds to the extended protection plate 8, which is convenient for the protection plate 8 to extend out of the top to connect to the upper fixing seat 10. The sector angle of the upper fixing seat 10 is smaller than that of the lower fixing seat 4. Inside the lower fixing seat 4, in addition to the chute 5 for accommodating the protection plate 8, there is also a slot 11 for connecting the protection plate 8.

[0027] Furthermore, the movable block 14 is in a sector ring shape. The top of the movable block 14 is integrally connected to the inclined block 16 and the limiting block 17. The movable block 14, the inclined block 16 and the limiting block 17 are all slidably connected to the inner wall of the groove 13. When the protection plate 8 is in the chute 5, the limiting block 17 and the inclined block 16 are squeezed back into the groove 13 by the inner wall of the chute 5. At this time, the spring 15 is in a compressed state. After the protection plate 8 is pulled out of the chute 5, the spring 15 rebounds to push the limiting block 17 and the inclined block 16 to protrude from the groove 13. The front and rear side walls of the bottom of the movable block 14 protrude, and the front and rear inner walls of the top of the groove 13 protrude for limiting the movable block 14 to prevent the movable block 14 from detaching from above the groove 13.

[0028] Furthermore, the inclined block 16 and the limiting block 17 are both movably inserted into the slot 11. The side of the slot 11 away from the limiting groove 12 is inclined. The limiting block 17 is inserted into the limiting groove 12, and the upper fixing seat 10 is clamped by the limiting block 17, so that the upper bracket 2 is stably sleeved on the source sleeve 3, realizing synchronous connection to the upper bracket 2 by borrowing the extension of the protection plate 8 without additional installation operations.

[0029] The usage method of this embodiment is as follows: When the user actually uses the anti-collision device to protect the source casing 3 in the source rack, first install the three lower fixing seats 4 on the outer wall of the lower bracket 1 through screws, and install the three upper fixing seats 10 on the outer wall of the upper bracket 2 through screws. Then, put the upper bracket 2 on the top of the source casing 3, and turn the knob 9 counterclockwise. The knob 9 drives the slider 7 to slide in the chute 5, and the slider 7 drives the protection plate 8 to move, so that the protection plate 8 is pulled out from the chute 5. At the same time, the protection plate 8 drives the inclined plate and the limit block 17 to move. When the groove 13 is pulled out from the chute 5, the top of the limit block 17 loses the limiting effect of the inner wall of the chute 5. At this time, the spring 15 rebounds and pushes the movable block 14 to move upward in the groove 13. The movable block 14 drives the limit block 17 to move upward through the inclined block 16, so that the inclined block 16 and the limit block 17 are inserted into the slot 11 at the bottom of the upper fixing seat 10. As the protection plate 8 continues to be pulled out, the protection plate 8 drives the inclined block 16 and the limit block 17 to move in the slot 11 until the limit block 17 is inserted into the limit groove 12, and the limit block 17 clamps the upper fixing seat 10, so that the upper bracket 2 is stably sleeved on the source casing 3. Finally, the side of the protection plate 8 away from the slider 7 is inserted into the connection groove 6 in the adjacent lower fixing seat 4, and the protection plate 8 is used to block the gap between the two adjacent lower fixing seats 4, so as to protect all the circumferentially arranged source casings 3.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A source rack anti-collision device, comprising a lower bracket (1), a source sleeve (3) mounted on the upper surface of the lower bracket (1), and an upper bracket (2) sleeved on the source sleeve (3), characterized in that: The outer wall of the lower bracket (1) is connected to a lower fixed seat (4), a slide groove (5) is provided inside the lower fixed seat (4), a connecting groove (6) is provided inside the lower fixed seat (4) on one side of the slide groove (5), a sliding block (7) is provided inside the sliding groove (5), a side wall of the sliding block (7) away from the connecting groove (6) is connected to a protective plate (8), an outer wall of the sliding block (7) passes through the side wall of the lower fixed seat (4) and is connected to a shifting block (9), and an outer wall of the upper bracket (2) is connected to an upper A fixing seat (10), wherein a slot (11) is provided at the bottom of the upper fixing seat (10), a limiting slot (12) is provided on one side of the slot (11), a groove (13) is provided at the top of the protective plate (8), a movable block (14) is provided inside the groove (13), a spring (15) is connected between the bottom of the movable block (14) and the bottom surface of the groove (13), an inclined block (16) is connected to the top of the movable block (14), and a limiting block (17) is connected on one side of the inclined block (16).

2. The source rack anti-collision device according to claim 1, characterized in that: The lower fixing seat (4) is in the shape of a rectangular plate with a fan-shaped cross section. There are three lower fixing seats (4) in number, which are arranged equidistantly along the outer wall of the lower bracket (1) in the circumferential direction, and the inner wall of the top of the lower fixing seat (4) is in contact with the outer wall of the upper bracket (2).

3. The source rack anti-collision device according to claim 1, characterized in that: The width of the inner wall of the slide groove (5) is matched with the width of the slider (7); the slider (7) is slidably connected to the inner wall of the slide groove (5); the shift block (9) is T-shaped; the shift block (9) passes through the side wall of the lower fixed seat (4) and is connected to the slider (7).

4. The source rack anti-collision device according to claim 1, characterized in that: The protective plate (8) is in the shape of a rectangular plate with a fan-shaped cross section. One side of the protective plate (8) is integrally connected to the slider (7), and the other side of the protective plate (8) is movably plugged into the connecting groove (6).

5. The source rack anti-collision device according to claim 1, characterized in that: The upper fixing seat (10) is in the shape of a fan ring. There are three upper fixing seats (10) in number and they are equidistantly arranged in the circumferential direction along the outer wall of the upper bracket (2). The upper fixing seat (10) and the lower fixing seat (4) are staggered in the vertical direction, and the fan-shaped angle of the upper fixing seat (10) is smaller than the fan-shaped angle of the lower fixing seat (4).

6. The source rack anti-collision device according to claim 1, characterized in that: The movable block (14) is in the shape of a fan ring. The top of the movable block (14) is integrally connected with the inclined block (16) and the limit block (17). The movable block (14), the inclined block (16) and the limit block (17) are all slidably connected with the inner wall of the groove (13).

7. The source rack anti-collision device according to claim 1, characterized in that: The inclined block (16) and the limiting block (17) are both movably plugged into the slot (11); the side of the slot (11) away from the limiting slot (12) is inclined, and the limiting block (17) is plugged into the limiting slot (12).

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