Automatic shielding safety device for radioactive source

Abstract

The utility model relates to the technical field of shielding doors, and discloses a radioactive source automatic shielding safety device which comprises a door frame, an upper cross beam fixedly installed at the upper end of the door frame, a plurality of fixing pieces fixedly installed on the front side of the upper cross beam, a track beam fixedly installed at the lower ends of the fixing pieces, and connecting plates fixedly installed on the front side and the rear side in the track beam respectively. Two guide seats are fixedly mounted on one side of the connecting plate, two sliding mechanisms are further movably mounted in the track beam, each sliding mechanism comprises a wheel seat, and two rotating shafts are rotatably mounted in the wheel seats. The shielding door can slide at the lower end of the track beam through two sliding mechanisms at the upper end to achieve opening and closing, and each sliding mechanism is composed of a wheel seat, a rotating shaft, a first rolling wheel, a second rolling wheel, a connecting rod and the like. The shield door horizontally moves by a certain distance towards the door frame direction after being closed by matching two groups of connecting plates and guide seats which are obliquely arranged on the opposite sides in the track beam, so that a gap at the joint of the shield door and the door frame is filled, and rays are prevented from escaping.

Description

Technical Field

[0001] This utility model relates to the field of shielding door technology, and in particular to an automatic shielding safety device for radiation sources. Background Technology

[0002] Radiation shielding doors are doors specifically designed to block and reduce radioactive radiation. They are generally used in places with high radiation levels, such as nuclear facilities, radiotherapy rooms, X-ray machine rooms, and medical imaging departments.

[0003] Radiation shielding doors primarily use high atomic number materials, such as lead or lead-containing materials, as a barrier to absorb unwanted X-rays or other radiation, thereby reducing radiation levels and ensuring personal safety. The design of these doors takes radiation protection needs into account; therefore, the door body and frame are typically made of high-density shielding materials. However, due to factors such as manufacturing processes, installation precision, and wear and tear during long-term use, these gaps, though usually small, can still pose potential hazards to the surrounding environment and personnel if radiation escapes through them. Radiation leakage can lead to cumulative radiation doses, increasing the risk of radiation-related illnesses, especially in high-radiation environments such as nuclear medicine and radiotherapy, where the impact of radiation leakage is particularly significant. Utility Model Content

[0004] The purpose of this invention is to provide an automatic shielding safety device for radiation sources, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An automatic radiation source shielding safety device includes a door frame. An upper crossbeam is fixedly installed on the upper end of the door frame. Multiple fasteners are fixedly installed on the front side of the upper crossbeam. A track beam is fixedly installed on the lower end of the multiple fasteners. Connecting plates are fixedly installed on the front and rear sides of the track beam. Two guide seats are fixedly installed on one side of the connecting plates. Two sliding mechanisms are also movably installed inside the track beam. Each sliding mechanism includes a wheel seat. Two rotating shafts are rotatably installed inside the wheel seat. A first roller is rotatably installed on one end of each rotating shaft and is limited by a retaining spring. A second roller is rotatably installed on the other end of each rotating shaft and is also limited by a retaining spring. A connecting rod is fixedly connected between the two wheel seats. A fixing bolt is inserted and installed in the middle of the wheel seat, and a shielding door is fixedly connected to the lower end of the two fixing bolts. A protective cover is also fixedly installed on the front side of the upper crossbeam, and the fasteners and the track beam are located inside the protective cover.

[0007] As a further preferred embodiment of this utility model, the guide seat has slopes on both sides. With the help of the connecting plates and guide seats that are obliquely symmetrically arranged on the front and rear sides of the track beam, the horizontal displacement of the two sliding mechanisms can be realized.

[0008] As a further preferred embodiment of this utility model, a limiting flange is fixedly installed on the outer side of the wheel seat.

[0009] As a further preferred embodiment of this utility model, a compression spring is fixedly installed on one side of the second roller, and a compression spring is also fitted on one end of the rotating shaft. One side of the compression spring abuts against one side of the wheel seat, and the other side of the compression spring abuts against one side of the baffle.

[0010] As a further preferred embodiment of this utility model, multiple balls are rotatably mounted on the outer side of the first roller, and multiple balls are also rotatably mounted on the outer side of the second roller. Two first rollers and two second rollers are respectively arranged on both sides of the wheel seat, and one end of the second roller and the rotating shaft can move relative to each other, so as to facilitate the displacement of the shielding door through the wheel seat and the fixing bolt, so that the shielding door fits more tightly with the door frame after closing.

[0011] As a further preferred embodiment of this utility model, the lower end of the connecting rod has two positioning grooves, the longitudinal section of the positioning grooves corresponds to the longitudinal section of the upper half of the wheel seat, the top of the positioning grooves has two limiting grooves, and the positioning groove between the two limiting grooves also has a threaded groove. The positioning grooves are inserted into the wheel seat, the limiting grooves are inserted into the limiting flange, and the upper end of the fixing bolt is threaded into the threaded groove. Through the setting of the connecting rod, it can cooperate with the two sets of connecting plates and guide seats on the front and rear sides of the track beam to achieve a normal distance between the shielding door and the wall and door frame after the shielding door is opened, and a tight fit with the door frame after the shielding door is closed.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this utility model, the shielding door can be opened and closed by sliding at the lower end of the track beam through two sliding mechanisms at the upper end. The sliding mechanism is composed of wheel seats, rotating shafts, first rollers, second rollers, connecting rods, etc., and works with two sets of connecting plates arranged diagonally on opposite sides of the track beam and guide seats to achieve a certain horizontal displacement of the shielding door towards the door frame after it is closed, thereby filling the gap at the connection between the shielding door and the door frame and preventing radiation from escaping. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure installation of this utility model;

[0015] Figure 2 This is a schematic diagram showing the disassembled main structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the disassembled track beam structure of this utility model;

[0017] Figure 4This is a schematic diagram of the disassembled structure of the sliding mechanism of this utility model.

[0018] In the diagram: 1. Door frame; 2. Upper crossbeam; 3. Fixing component; 4. Track beam; 5. Connecting plate; 6. Guide seat; 7. Sliding mechanism; 8. Wheel seat; 9. Rotating shaft; 10. First roller; 11. Second roller; 12. Connecting rod; 13. Fixing bolt; 14. Shielding door; 15. Protective cover; 16. Baffle; 17. Compression spring; 18. Ball bearing; 19. Limiting flange; 20. Positioning groove; 21. Limiting groove; 22. Threaded groove. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figures 1-4 As shown, the automatic radiation source shielding safety device provided by this utility model includes a door frame 1. An upper crossbeam 2 is fixedly installed on the upper end of the door frame 1. Multiple fixing parts 3 are fixedly installed on the front side of the upper crossbeam 2. A track beam 4 is fixedly installed on the lower end of the multiple fixing parts 3. Connecting plates 5 are fixedly installed on the front and rear sides of the track beam 4 respectively. Two guide seats 6 are fixedly installed on one side of the connecting plate 5. Two sliding mechanisms 7 are also movably installed in the track beam 4. The sliding mechanism 7 includes wheel seats 8. Two rotating shafts 9 are rotatably installed in the wheel seats 8. A first roller 10 is rotatably installed on one end of the rotating shaft 9 and is limited by a snap ring. A second roller 11 is rotatably installed on the other end of the rotating shaft 9 and is also limited by a snap ring. A connecting rod 12 is fixedly connected between the two wheel seats 8. A fixing bolt 13 is inserted and installed in the middle of the wheel seat 8. The lower ends of the two fixing bolts 13 are fixedly connected to a shielding door 14. A protective cover 15 is also fixedly installed on the front side of the upper crossbeam 2. The fixing parts 3 and the track beam 4 are located inside the protective cover 15.

[0021] like Figure 3 As shown, the guide seat 6 has slopes on both sides. With the help of the connecting plates 5, which are obliquely symmetrically arranged on the front and rear sides of the track beam 4, the guide seat 6 can realize the horizontal displacement of the two sliding mechanisms 7.

[0022] like Figures 2-4As shown, a limiting flange 19 is fixedly installed on the outer side of the wheel seat 8. A compression spring 17 is fixedly installed on one side of the second roller 11, and a compression spring 17 is also fitted on one end of the rotating shaft 9. One side of the compression spring 17 abuts against one side of the wheel seat 8, and the other side of the compression spring 17 abuts against one side of the baffle 16. Multiple balls 18 are rotatably installed on the outer side of the first roller 10, and multiple balls 18 are also rotatably installed on the outer side of the second roller 11. Two first rollers 10 and two second rollers 11 are respectively set on both sides of the wheel seat 8, and one end of the second roller 11 and the rotating shaft 9 can move relative to each other, so as to facilitate the displacement of the shielding door 14 through the wheel seat 8 and the fixing bolt 13, so that the shielding door 14 fits more tightly with the door frame 1 after closing. The connecting rod 12 Two positioning grooves 20 are provided at the lower end. The longitudinal section of the positioning groove 20 corresponds to the longitudinal section of the upper half of the wheel seat 8. Two limiting grooves 21 are provided at the top of the positioning groove 20. A screw groove 22 is also provided in the positioning groove 20 between the two limiting grooves 21. The positioning groove 20 is inserted and installed on the wheel seat 8. The limiting groove 21 is inserted on the limiting flange 19. The upper end of the fixing bolt 13 is threaded in the screw groove 22. Through the setting of the connecting rod 12, it can cooperate with the two sets of connecting plates 5 and guide seats 6 on the front and rear sides of the track beam 4 to achieve a normal distance between the shielding door 14 and the wall and door frame 1 after opening. After the shielding door 14 is closed, it fits tightly with the door frame 1.

[0023] It should be noted that this utility model is an automatic radiation source shielding safety device. When the shielding door 14 moves horizontally through the electric drive mechanism, the shielding door 14 will drive the two fixing bolts 13 at the upper end to move synchronously. Then, the fixing bolts 13 drive the wheel seats 8 to slide within the track beam 4 via the first rollers 10 and the second rollers 11 on both sides. This causes the two wheel seats 8 to drive the connecting rod 12 to move synchronously. When the two wheel seats 8 drive the connecting rod 12 to the guide seat 6 near the front side of the track beam 4, it is limited by the first guide seat 6, and the front side of the connecting rod 12 moves towards the track. The cabinet moves in the rearward direction of the inner side of the beam 4, causing the connecting rod 12 to drive the wheel seat 8 to move backward synchronously. This causes the wheel seat 8 to drive the first roller 10 to slide backward in the track beam 4 through the outer multiple balls 18 via the rotating shaft 9. One end of the rotating shaft 9 also moves through the second roller 11 and compresses the compression spring 17. This causes the two wheel seats 8 to drive the shielding door 14 to move towards the door frame 1 via the internal fixing bolts 13. This causes the sealing gasket on one side of the door frame 1 to be squeezed and adhered to the front side of the door frame 1, thereby filling the gap between the door frame 1 and the track beam 4.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A radioactive source automatic shielding safety device, characterized in that: The system includes a door frame (1), an upper crossbeam (2) fixedly installed at the upper end of the door frame (1), a plurality of fasteners (3) fixedly installed at the front side of the upper crossbeam (2), a track beam (4) fixedly installed at the lower end of the plurality of fasteners (3), a connecting plate (5) fixedly installed at the front and rear sides of the track beam (4), two guide seats (6) fixedly installed on one side of the connecting plate (5), and two sliding mechanisms (7) movably installed inside the track beam (4). The sliding mechanism (7) includes a wheel seat (8), and two rotating shafts (9) are rotatably installed inside the wheel seat (8). One end of the rotating shaft (9) is rotatably mounted with a first roller (10) and limited by a snap ring. The other end of the rotating shaft (9) is rotatably mounted with a second roller (11) and also limited by a snap ring. A connecting rod (12) is fixedly connected between the two wheel seats (8). A fixing bolt (13) is inserted in the middle of the wheel seat (8), and a shielding door (14) is fixedly connected to the lower end of the two fixing bolts (13). A protective cover (15) is fixedly installed on the front side of the upper crossbeam (2), and the fixing member (3) and the track beam (4) are located inside the protective cover (15).

2. The radioactive source automatic shielding safety device according to claim 1, characterized in that: The guide seat (6) has slopes on both sides.

3. The radioactive source automatic shielding safety device according to claim 1, characterized in that: A limiting flange (19) is fixedly installed on the outer side of the wheel seat (8).

4. The radioactive source automatic shielding safety device of claim 1, wherein: A compression spring (17) is fixedly installed on one side of the second roller (11), and a compression spring (17) is also fitted on one end of the shaft (9). One side of the compression spring (17) abuts against one side of the wheel seat (8), and the other side of the compression spring (17) abuts against one side of the baffle (16).

5. The radioactive source automatic shielding safety device according to claim 1, characterized in that: Multiple balls (18) are rotatably mounted on the outer side of the first roller (10), and multiple balls (18) are also rotatably mounted on the outer side of the second roller (11).

6. The radioactive source automatic shielding safety device of claim 3, wherein: The lower end of the connecting rod (12) has two positioning grooves (20). The longitudinal section of the positioning groove (20) corresponds to the longitudinal section of the upper half of the wheel seat (8). The top of the positioning groove (20) has two limiting grooves (21). The positioning groove (20) between the two limiting grooves (21) also has a screw groove (22). The positioning groove (20) is inserted into the wheel seat (8). The limiting groove (21) is inserted into the limiting flange (19). The upper end of the fixing bolt (13) is threaded into the screw groove (22).

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