Door frame structure of a medical polymer radiation shielding door

Abstract

The present invention belongs to the technical field of shielding doors, and in particular to a door frame structure of a medical polymer radiation shielding door. In view of the problem that sealing is performed by a sealing strip in the prior art, but the sealing performance cannot be monitored, and that friction exists between the door body and the door frame, which easily accelerates the loss of the sealing strip, the following scheme is proposed, which includes a wall, a first mounting groove and a shielding door, wherein a door opening is provided on one side of the wall, a first mounting groove for accommodating the shielding door is provided on one side of the wall, a guide rail is provided on one side of the wall, the shielding door is slidably arranged in the guide rail, and the door opening is sealed after the shielding door moves into position, and an inner frame is movably arranged in the door opening. In the present invention, the sealing of the door opening and the smooth movement of the shielding door are realized, and at the same time, by setting a transmission mechanism and a monitoring component, the synchronous movement of the inner frame and the shielding door and the real-time monitoring of the sealing effect are ensured, thereby improving the safety and reliability of the shielding door.

Description

Technical Field

[0001] The invention relates to the technical field of shielding doors, in particular to a door frame structure of a medical polymer radiation shielding door. Background Art

[0002] Radiation refers to the phenomenon that a part of the electromagnetic energy emitted by the field source escapes from the field source and propagates to distant places, and then never returns to the field source. The energy diffuses outward in the form of electromagnetic waves or particles (such as alpha particles and beta particles). Lead door sealing is usually used during treatment.

[0003] The existing lead doors also have the following disadvantages during use: when the door frame is installed in the door opening, there will be a gap between the door frame and the door opening. The traditional sealing method uses sealing strips for sealing, but the sealing performance cannot be monitored. At the same time, there is friction between the door body and the door frame, which can easily accelerate the loss of the sealing strips. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that sealing is performed by a sealing strip, but the sealing performance cannot be monitored, and there is friction between the door body and the door frame, which easily accelerates the loss of the sealing strip. A door frame structure for a medical polymer radiation shielding door is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A door frame structure of a medical polymer radiation shielding door, comprising a wall, a first mounting groove and a shielding door, wherein a door opening is provided on one side of the wall, a first mounting groove for accommodating the shielding door is provided on one side of the wall, a guide rail is provided on one side of the wall, the shielding door is slidably arranged in the guide rail, and the door opening is sealed after the shielding door moves into position;

[0007] An inner frame is movably provided in the door opening, and a second sealing frame and a first sealing frame are fixedly provided on the outer wall of the inner frame, wherein the second sealing frame contacts one side of the shielding door and is used to seal between the shielding door and the door opening, and the first sealing frame contacts the wall and is used to seal between the inner frame and the door opening;

[0008] The transmission mechanism is arranged on one side of the wall and used in conjunction with the shielding door to provide power to the inner frame during the movement of the shielding door. The transmission mechanism is provided with a monitoring component for monitoring the sealing between the second sealing frame and the shielding door and between the first sealing frame and the wall.

[0009] In a possible design, a sliding frame is provided on the outer wall sliding sleeve of the inner frame, and a first mounting plate and a second mounting plate are provided on the four sides of the sliding frame respectively. An expansion bolt is penetrated through the outer wall of the sliding frame, and one end of the expansion bolt penetrates through the first mounting plate and the second mounting plate and extends into the door opening. A socket corresponding to the expansion bolt is opened on the outer wall of the inner frame, and the sliding frame always seals the socket before and after the inner frame moves.

[0010] In a possible design, a limit frame is fixedly sleeved on the outer wall of the inner frame, and the sliding frame is located between the second sealing frame and the limit frame. A plurality of sliding columns are slidably provided on one side of the sliding frame, and both ends of the sliding columns are respectively fixedly connected to the mutually close sides of the second sealing frame and the limit frame. A spring is sleeved on the outer wall of the sliding column, and both ends of the spring are respectively fixedly connected to the mutually close sides of the sliding frame and the limit frame to provide reset power for the inner frame. A second cavity is formed between the second sealing frame, the sliding frame, the first mounting plate and the second mounting plate, and a first cavity is formed between the limit frame, the first sealing frame, the first mounting plate and the second mounting plate.

[0011] In a possible design, the transmission mechanism includes two piston rods arranged on one side of the wall, and the outer wall sliding sleeve of the piston rod located below is provided with a first piston cylinder, the first piston cylinder is fixed on one side of the wall, and the first piston cylinder is connected to a first air pipe, the other end of the first air pipe extends into the second cavity, and one end of the piston rod located below is connected to the shielding door.

[0012] In a possible design, a second rack is slidably provided on one side of the wall, a first rack is fixedly provided on one side of the wall, a resistance block used in conjunction with the shielding door is slidably provided on one side of the wall, an extension rod is fixedly provided at one end of the resistance block, a gear meshing with the second rack and the first rack is rotatably provided on one side of the extension rod, and both piston rods are connected to the second rack.

[0013] In a possible design, a sliding bar is slidably provided on one side of the wall, two fixed blocks are fixedly provided on one side of the sliding bar, the two piston rods are respectively fixedly connected to the corresponding fixed blocks, and one end of the second rack is fixedly connected to one side of the sliding bar.

[0014] In one possible design, the monitoring component includes a second piston cylinder slidably mounted on the outer wall of the piston rod located above, the second piston cylinder is fixed on one side of the wall, the second piston cylinder is connected to a second air pipe, the other end of the second air pipe extends into the first cavity, and the second air pipe and the first air pipe are respectively provided with a second pressure gauge and a first pressure gauge for detecting the air pressure in the first cavity and the second cavity.

[0015] In a possible design, the first piston cylinder and the second piston cylinder are both connected with a fixed tube, the other end of the fixed tube is provided with a first one-way valve, the other end of the first one-way valve is connected to an exhaust valve, one end of the second air pipe and the first air pipe are respectively connected to the corresponding exhaust valves for discharging the air in the first cavity and the second cavity, an intake pipe is penetrated on one side of the second piston cylinder and the first piston cylinder, and the other end of the intake pipe is provided with a second one-way valve for internal gas flow.

[0016] In a possible design, a warning light is fixedly provided on one side of the wall, and conductive columns are embedded on the sides of the second sealing frame and the sliding frame that are close to each other. The negative pole of the warning light is connected to the negative pole of the power supply through a wire, and the positive pole of the warning light and the power supply are respectively connected to the corresponding conductive columns through wires to control the start and stop of the warning light.

[0017] In a possible design, a second installation groove corresponding to the outer wall of the second sealing frame is opened on one side of the shielding door, a lead plate is fixed in the second installation groove, and a sealing groove for accommodating the second sealing frame is formed between the lead plate and the shielding door for limiting the shielding door.

[0018] Beneficial effects: In the present invention, the door frame structure of the medical polymer radiation shielding door ensures the close fit between the shielding door and the wall through the multiple sealing design of the inner frame, the first sealing frame and the second sealing frame, and the coordinated use of the sliding frame and the expansion bolts, effectively preventing radiation leakage and improving the sealing performance of the door frame structure;

[0019] In the present invention, the door frame structure of the medical polymer radiation shielding door and the setting of the monitoring component include a first barometer and a second barometer, which can monitor the air pressure changes in the first cavity and the second cavity in real time, so as to accurately judge the sealing effect. Once the sealing performance decreases, the barometer will respond in time, which is convenient for maintenance personnel to take measures quickly to ensure the continuous and effective sealing of the door frame structure. At the same time, through the coordinated use of the conductive column and the warning light, when the sealing effect is not good, the warning light will automatically light up to remind the maintenance personnel to check and deal with it in time, thereby effectively avoiding the safety hazards caused by sealing failure.

[0020] In the present invention, the door frame structure of the medical polymer radiation shielding door is provided with a second installation groove on one side of the shielding door and a lead plate is fixedly arranged to form a sealing groove for accommodating the second sealing frame, which not only enhances the radiation shielding effect of the shielding door, but also realizes the limiting function of the shielding door, thereby improving the overall stability and safety of the door frame structure;

[0021] In the present invention, the sealing of the door opening and the smooth movement of the shielding door are achieved. At the same time, by setting a transmission mechanism and a monitoring component, the synchronous movement of the inner frame and the shielding door and the real-time monitoring of the sealing effect are ensured, thereby improving the safety and reliability of the shielding door. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional schematic diagram of the door frame structure of a medical polymer radiation shielding door proposed by the present invention;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of a door frame structure of a medical polymer radiation shielding door proposed by the present invention from another perspective;

[0024] Figure 3 A schematic diagram of the decomposed structure of a door frame of a medical polymer radiation shielding door proposed by the present invention;

[0025] Figure 4 A schematic diagram of a partial structure of a door frame of a medical polymer radiation shielding door proposed by the present invention;

[0026] Figure 5 A schematic diagram of a piston rod installation structure of a door frame structure of a medical polymer radiation shielding door proposed by the present invention;

[0027] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of the middle part A;

[0028] Figure 7 A schematic diagram of the shielding door structure of a door frame structure of a medical polymer radiation shielding door proposed by the present invention.

[0029] In the figure: 1, wall; 2, first mounting groove; 3, guide rail; 4, shielding door; 5, warning light; 6, door opening; 7, inner frame; 8, first sealing frame; 9, sliding frame; 10, limit frame; 11, second sealing frame; 12, expansion bolt; 13, first mounting plate; 14, second mounting plate; 15, jack; 16, sliding column; 17, spring; 18, first cavity; 19, second cavity; 20, resistance block; 21, extension rod; 22, first rack ; 23. Gear; 24. Second rack; 25. Sliding bar; 26. Fixed block; 27. Piston rod; 28. First piston cylinder; 29. ​​Second piston cylinder; 30. First air pipe; 31. First barometer; 32. Second air pipe; 33. Second barometer; 34. Fixed pipe; 35. First one-way valve; 36. Exhaust valve; 37. Inlet pipe; 38. Second one-way valve; 39. Second mounting groove; 40. Lead plate; 41. Sealing groove; 42. Conductive column. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Example 1: Reference Figure 1-Figure 7 A door frame structure includes: a wall 1, a first mounting groove 2 and a shielding door 4. A door opening 6 is provided on one side of the wall 1 for entry and exit. At the same time, a first mounting groove 2 for accommodating the shielding door 4 is also provided on the same side of the wall 1. In order to ensure that the shielding door 4 can move smoothly, a guide rail 3 is provided on one side of the wall 1, and the first mounting groove 2 is slidably provided in the guide rail 3. When the shielding door 4 moves into place, it can completely cover the door opening 6 to achieve a sealing effect, and a motor can be provided in the guide rail 3 to realize automatic movement of the shielding door 4.

[0032] An inner frame 7 is movably arranged in the door opening 6. Two sealing frames, namely, a second sealing frame 11 and a first sealing frame 8, are fixedly arranged on the outer wall of the inner frame 7. When the shielding door 4 is moved into position, the second sealing frame 11 will contact with one side of the shielding door 4, thereby achieving sealing between the shielding door 4 and the door opening 6. At the same time, the first sealing frame 8 will contact with the wall 1, thereby achieving sealing between the inner frame 7 and the door opening 6.

[0033] In order to realize the movement of the first installation groove 2 and the synchronous movement of the inner frame 7, a transmission mechanism is provided on one side of the wall 1. The transmission mechanism is used in conjunction with the shielding door 4 to provide power to the inner frame 7 during the movement of the shielding door 4. At the same time, a monitoring component is also provided on the transmission mechanism to monitor the sealing conditions between the second sealing frame 11 and the shielding door 4 and between the first sealing frame 8 and the wall 1.

[0034] Specifically, a sliding frame 9 is provided on the outer wall sliding sleeve of the inner frame 7. The sliding frame 9 is respectively provided with a first mounting plate 13 and a second mounting plate 14, through which the sliding frame 9 can be more stably fixed on the door opening 6. An expansion bolt 12 is provided through the outer wall of the sliding frame 9. One end of the expansion bolt 12 will penetrate the first mounting plate 13 and the second mounting plate 14 and extend into the door opening 6. At the same time, a socket 15 corresponding to the expansion bolt 12 is opened on the outer wall of the inner frame 7. When the inner frame 7 moves, the sliding frame 9 will always seal the socket 15 to prevent dust or foreign matter from entering.

[0035] In order to further improve the sealing effect, a limit frame 10 is fixedly sleeved on the outer wall of the inner frame 7. The sliding frame 9 is located between the second sealing frame 11 and the limit frame 10. On one side of the sliding frame 9, a plurality of sliding posts 16 are slidably arranged. The two ends of the sliding posts 16 are respectively fixedly connected to the second sealing frame 11 and the side of the limit frame 10 close to each other. A spring 17 is sleeved on the outer wall of the sliding post 16. The two ends of the spring 17 are respectively fixedly connected to the side of the sliding frame 9 and the limit frame 10 close to each other. In this way, when the inner frame 7 is not subjected to external force, the spring 17 can provide a reset force for the inner frame 7 to ensure that it always remains in the correct position.

[0036] The specific implementation of the transmission mechanism is as follows: two piston rods 27 are provided on one side of the wall 1. A first piston cylinder 28 is slidably sleeved on the outer wall of the piston rod 27 located below. The first piston cylinder 28 is fixedly arranged on one side of the wall 1, and a first air pipe 30 is connected to the first piston cylinder 28. The other end of the first air pipe 30 extends into the second cavity 19 formed by the second sealing frame 11, the sliding frame 9, the first mounting plate 13 and the second mounting plate 14. One end of the piston rod 27 located below is connected to the shielding door 4. When the shielding door 4 moves, it will push the piston rod 27 below to move in the first piston cylinder 28, and squeeze the gas in the first piston cylinder 28 into the second cavity 19, so as to drive the second sealing frame 11 close to the shielding door 4.

[0037] In order to achieve precise control of the piston rod 27, a second rack 24 and a fixed first rack 22 are also slidably provided on one side of the wall 1. At the same time, a resistance block 20 used in conjunction with the shielding door 4 is also slidably provided on one side of the wall 1. An extension rod 21 is fixedly provided at one end of the resistance block 20. On one side of the extension rod 21, a gear 23 meshing with the second rack 24 and the first rack 22 is rotatably provided. Both piston rods 27 are connected to the second rack 24. When the gear 23 rotates, the second rack 24 is driven to move. Since the second rack 24 is connected to the two piston rods 27, the two piston rods 27 will also move accordingly.

[0038] The monitoring component is constructed as follows: On the outer wall of the piston rod 27 located at the top, a second piston cylinder 29 is provided in a sliding sleeve. The second piston cylinder 29 is fixedly arranged on one side of the wall 1, and a second air pipe 32 is connected to the second piston cylinder 29, and the other end of the second air pipe 32 extends into the first cavity 18 formed by the limit frame 10, the first sealing frame 8, the first mounting plate 13 and the second mounting plate 14. At the same time, a second barometer 33 and a first barometer 31 are provided on the second air pipe 32 and the first air pipe 30, respectively. These two barometers are used to detect the air pressure in the first cavity 18 and the second cavity 19 in real time, so as to monitor the sealing effect.

[0039] The present application can be used in the field of shielding doors, and can also be used in other fields applicable to the present application.

[0040] Example 2: Reference Figure 1-Figure 7 , improved on the basis of Example 1: A door frame structure of a medical polymer radiation shielding door, which is applied to the field of shielding doors. In order to further improve the stability of the transmission mechanism, a sliding bar 25 is also slidably provided on one side of the wall 1. Two fixed blocks 26 are fixedly provided on one side of the sliding bar 25. Two piston rods 27 are fixedly connected to the corresponding fixed blocks 26 respectively. At the same time, one end of the second rack 24 is fixedly connected to one side of the sliding bar 25. In this way, when the second rack 24 moves, it will drive the sliding bar 25 and the fixed block 26 to move together, thereby ensuring that the two piston rods 27 can move smoothly and accurately.

[0041] In order to discharge the air pressure in the first cavity 18 and the second cavity 19, a fixed pipe 34 is connected to the first piston cylinder 28 and the second piston cylinder 29. A first one-way valve 35 is provided at the other end of the fixed pipe 34, and the one-way valve ensures that the gas can only flow in one direction. An exhaust valve 36 is connected to the other end of the first one-way valve 35. One end of the second air pipe 32 and the first air pipe 30 are respectively connected to the corresponding exhaust valve 36, so that when the air in the first cavity 18 and the second cavity 19 needs to be discharged, it is only necessary to open the exhaust valve 36. The exhaust valve 36 can be an electric valve. At the same time, an air intake pipe 37 is provided on one side of the second piston cylinder 29 and the first piston cylinder 28. A second one-way valve 38 is provided at the other end of the air intake pipe 37, and the one-way valve ensures that the gas can only flow into the piston cylinder from the outside, providing a channel for the internal gas flow.

[0042] In order to increase the safety of the equipment, a warning light 5 is fixed on one side of the wall 1. Conductive columns 42 are embedded on the sides of the second sealing frame 11 and the sliding frame 9 that are close to each other. The negative pole of the warning light 5 is connected to the negative pole of the power supply through a wire, while the positive pole of the warning light 5 and the power supply are connected to the corresponding conductive columns 42 through wires. When the second sealing frame 11 is in close contact with the sliding frame 9, the two conductive columns 42 will contact each other, thereby forming a closed circuit, so that the warning light 5 lights up. If the sealing effect is not good and the conductive columns 42 cannot contact, the warning light 5 will go out, which serves as a safety warning.

[0043] In addition, in order to limit the position of the shielding door 4 and ensure the stable connection between it and the wall 1, a second installation groove 39 corresponding to the outer wall of the second sealing frame 11 is opened on one side of the shielding door 4. A lead plate 40 is fixed in the second installation groove 39. A sealing groove 41 for accommodating the second sealing frame 11 is formed between the lead plate 40 and the shielding door 4. When the shielding door 4 is moved into place, the second sealing frame 11 will be embedded in the sealing groove 41 and closely contact with the lead plate 40, thereby realizing the limiting and sealing of the shielding door 4.

[0044] In the present application, during installation, two first mounting plates 13 and second mounting plates 14 are cut according to the size of the door opening 6, and then the two first mounting plates 13 and second mounting plates 14 are placed around the sliding frame 9, which is then placed in the door opening 6, and finally the expansion bolts 12 are inserted into the sliding frame 9, passing through the first mounting plates 13 and second mounting plates 14 and extending into the wall 1, and the installation is completed;

[0045] When in use, the shielding door 4 is controlled to move by the controller to seal the sliding frame 9. During the movement, the resistance block 20 is pushed to move. The movement of the resistance block 20 can drive the extension rod 21 to move. The movement of the extension rod 21 can drive the gear 23 to roll on the first rack 22. The rolling of the gear 23 can drive the second rack 24 to move. The movement of the second rack 24 can push the piston rod 27 in the first piston cylinder 28 to move, squeeze the air in the first piston cylinder 28, and make the air enter the second cavity 19 through the first air pipe 30. When entering the second cavity 19, it will drive the second sealing frame 11 to approach the first mounting groove 2 until the second sealing frame 11 moves into the sealing groove 41 to limit the first mounting groove 2, and compress the spring 17 at the same time.

[0046] The movement of the second sealing frame 11 can drive the inner frame 7 to move, and the movement of the inner frame 7 can drive the first sealing frame 8 to move, so that the first sealing frame 8 seals the other side of the wall 1;

[0047] During the movement of the lower piston rod 27, the upper piston rod 27 can be driven to move by the sliding bar 25, squeezing the air in the second piston cylinder 29, so that the air enters the first cavity 18 through the second air pipe 32 until the first mounting groove 2 moves into place;

[0048] At the same time, when the two conductive pillars 42 on one side of the sliding frame 9 and the second sealing frame 11 are close to each other, the warning light 5 is energized and emits a green light;

[0049] And observe the second barometer 33. When the air pressure displayed by the second barometer 33 is lower than the set air pressure, the air pressure in the first cavity 18 is low, indicating that the first sealing frame 8 and the wall 1 cannot be completely sealed.

[0050] When the air pressure displayed by the first barometer 31 is lower than the set air pressure, the air pressure in the second cavity 19 is relatively low, indicating that the second sealing frame 11 and the shielding door 4 cannot be completely sealed.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A door frame structure for a medical polymer radiation shielding door, characterized in that: The invention comprises a door opening (6) opened on one side of a wall (1), a first installation groove (2) and a shielding door (4), wherein the first installation groove (2) for accommodating the shielding door (4) is opened on one side of the wall (1), a guide rail (3) is provided on one side of the wall (1), the shielding door (4) is slidably arranged in the guide rail (3), and the door opening (6) is sealed after the shielding door (4) moves into position; An inner frame (7) is movably provided in the door opening (6); a second sealing frame (11) and a first sealing frame (8) are fixedly provided on the outer wall of the inner frame (7); the second sealing frame (11) contacts one side of the shielding door (4) and is used to seal between the shielding door (4) and the door opening (6); the first sealing frame (8) contacts the wall (1) and is used to seal between the inner frame (7) and the door opening (6); The outer wall of the inner frame (7) is slidably sleeved with a sliding frame (9), and the sliding frame (9) is respectively provided with a first mounting plate (13) and a second mounting plate (14) on its four sides; an expansion bolt (12) is penetrated through the outer wall of the sliding frame (9), and one end of the expansion bolt (12) penetrates through the first mounting plate (13) and the second mounting plate (14) and extends into the door opening (6); the outer wall of the inner frame (7) is provided with a plug hole (15) corresponding to the expansion bolt (12); and before and after the inner frame (7) moves, the sliding frame (9) always seals the plug hole (15); The outer wall of the inner frame (7) is fixedly sleeved with a limit frame (10); the sliding frame (9) is located between the second sealing frame (11) and the limit frame (10); a plurality of sliding columns (16) are slidably provided on one side of the sliding frame (9); two ends of the sliding columns (16) are respectively fixedly connected to the second sealing frame (11) and the limit frame (10) on one side thereof, and a spring (17) is sleeved on the outer wall of the sliding column (16); two ends of the spring (17) are respectively fixedly connected to the sliding frame (9) and the limit frame (10) on one side thereof, so as to provide a reset force for the inner frame (7); a second cavity (19) is formed between the second sealing frame (11), the sliding frame (9), the first mounting plate (13) and the second mounting plate (14); and a first cavity (18) is formed between the limit frame (10), the first sealing frame (8), the first mounting plate (13) and the second mounting plate (14); A transmission mechanism is arranged on one side of the wall (1) and is used in conjunction with the shielding door (4) to provide power to the inner frame (7) during the movement of the shielding door (4), and a monitoring component is provided on the transmission mechanism for monitoring the seal between the second sealing frame (11) and the shielding door (4) and between the first sealing frame (8) and the wall (1).

2. The door frame structure of a medical polymer radiation shielding door according to claim 1, characterized in that: The transmission mechanism comprises two piston rods (27) arranged on one side of the wall (1); a first piston cylinder (28) is slidably sleeved on the outer wall of the piston rod (27) located at the bottom; the first piston cylinder (28) is fixedly arranged on one side of the wall (1); a first air pipe (30) is connected to the first piston cylinder (28); the other end of the first air pipe (30) extends into the second cavity (19); and one end of the piston rod (27) located at the bottom is connected to the shielding door (4).

3. The door frame structure of a medical polymer radiation shielding door according to claim 2, characterized in that: A second rack (24) is slidably provided on one side of the wall (1), a first rack (22) is fixedly provided on one side of the wall (1), a resistance block (20) used in conjunction with the shielding door (4) is slidably provided on one side of the wall (1), an extension rod (21) is fixedly provided on one end of the resistance block (20), a gear (23) meshing with the second rack (24) and the first rack (22) is rotatably provided on one side of the extension rod (21), and both of the two piston rods (27) are connected to the second rack (24).

4. The door frame structure of a medical polymer radiation shielding door according to claim 3, characterized in that: A sliding bar (25) is slidably provided on one side of the wall (1), two fixed blocks (26) are fixedly provided on one side of the sliding bar (25), the two piston rods (27) are respectively fixedly connected to the corresponding fixed blocks (26), and one end of the second rack (24) is fixedly connected to one side of the sliding bar (25).

5. The door frame structure of a medical polymer radiation shielding door according to claim 4, characterized in that: The monitoring component comprises a second piston cylinder (29) slidably mounted on the outer wall of a piston rod (27) located above, the second piston cylinder (29) being fixedly mounted on one side of the wall (1), the second piston cylinder (29) being connected to a second air pipe (32), the other end of the second air pipe (32) extending into the first cavity (18), the second air pipe (32) and the first air pipe (30) being respectively provided with a second pressure gauge (33) and a first pressure gauge (31) for detecting the air pressure in the first cavity (18) and the second cavity (19).

6. The door frame structure of a medical polymer radiation shielding door according to claim 5, characterized in that: The first piston cylinder (28) and the second piston cylinder (29) are both connected to a fixed pipe (34), the other end of the fixed pipe (34) is provided with a first one-way valve (35), the other end of the first one-way valve (35) is connected to an exhaust valve (36), one end of the second air pipe (32) and the first air pipe (30) are respectively connected to the corresponding exhaust valves (36) for exhausting the air in the first cavity (18) and the second cavity (19), one side of the second piston cylinder (29) and the first piston cylinder (28) is penetrated by an air intake pipe (37), the other end of the air intake pipe (37) is provided with a second one-way valve (38) for internal gas flow.

7. The door frame structure of a medical polymer radiation shielding door according to claim 2, characterized in that: A warning light (5) is fixedly provided on one side of the wall (1); conductive posts (42) are embedded on the sides of the second sealing frame (11) and the sliding frame (9) close to each other; the negative pole of the warning light (5) is connected to the negative pole of the power supply via a wire; the positive pole of the warning light (5) and the power supply are respectively connected to the corresponding conductive posts (42) via wires, so as to control the start and stop of the warning light (5).

8. A door frame structure for a medical polymer radiation shielding door according to any one of claims 1 to 7, characterized in that: A second mounting groove (39) corresponding to the outer wall of the second sealing frame (11) is formed on one side of the shielding door (4), a lead plate (40) is fixedly provided in the second mounting groove (39), and a sealing groove (41) for accommodating the second sealing frame (11) is formed between the lead plate (40) and the shielding door (4) for limiting the position of the shielding door (4).

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