Medical radiation protection device

Abstract

The present invention relates to the technical field of safety equipment, and in particular to a medical radiation protection device. The device comprises a vertically positioned door frame and a protective door, the door frame being provided with an entrance and exit, a mounting slot being provided within the door frame, the protective door sliding within the mounting slot and sealingly matching the entrance and exit; a cleaning mechanism being provided within the door frame to clean dirt on the surface of the protective door; a first driving mechanism being provided on the door frame to drive the cleaning mechanism to clean the surface of the protective door; a power mechanism being provided within the door frame, the output end of the power mechanism being connected to two second scrapers, a third scraper, and a fourth scraper so that the two second scrapers slide and clean with the third scraper and the fourth scraper, respectively; and two collection boxes for collecting dirt being slidably connected within the door frame. The device can collect dirt cleaned from the protective door by the cleaning mechanism through the collection boxes to prevent it from scattering into the room.

Description

Technical Field

[0001] The present invention relates to the technical field of safety equipment, and in particular to a medical radiation protection device. Background Art

[0002] Medical radiation protection doors shield against X-rays. Lined with lead plates with a lead equivalent of 1-31mmPb, they effectively prevent harm from various harmful radiation. They have passed testing by the Chinese Center for Disease Control and Prevention and nuclear safety medicine, and meet X-ray protection requirements.

[0003] A search of the prior art reveals that patent number CN116517447A discloses a heavy-duty radiation shielding door with stable opening and closing, comprising a door frame with guide rails symmetrically fixedly connected to the upper and lower sides of the door frame, a door panel slidably connected to the interior of the door frame, and a plurality of guide wheels symmetrically rotatably connected to the surface of the door panel, each of which is slidably connected to the guide rails. The present invention uses a double-headed motor to drive a traction wheel to rotate, thereby driving a traction cable and a traction block to push, pull, and open the door panel along the guide rails. Simultaneously, as the guide wheel rolls along the guide rails, it drives a cleaning wheel to clean the guide rails, and a cleaning belt to wipe the surface of the door panel to remove accumulated dirt.

[0004] The device cleans the protective door panel by providing a cleaning belt, but the dirt cleaned out is not centrally processed or collected, resulting in the dirt being dispersed into the indoor environment and polluting the environment. Summary of the Invention

[0005] In order to solve the problems existing in the background technology, the present invention proposes a medical radiation protection device.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A medical radiation protection device comprises a vertically placed door frame and a protective door, wherein the door frame is provided with an entrance and exit, and an installation slot is provided in the door frame, and the protective door is slidably arranged in the installation slot; the protective door matches the entrance and exit and is used to close the entrance and exit; a cleaning mechanism is provided in the door frame, and the cleaning mechanism is used to scrape dirt on the front and rear surfaces of the protective door and the right vertical side surface that slides through the entrance and exit, and the output end of the cleaning mechanism comprises two second scrapers; a first driving mechanism is fixedly installed on the door frame, and the output end of the first driving mechanism is both transmission-connected to the protective door and transmission-coordinated with the cleaning mechanism so that the cleaning mechanism and the surface of the protective door slide relative to each other; a power mechanism is fixedly installed in the door frame, and the output end of the power mechanism is both transmission-connected to the two second scrapers and transmission-connected to the third scraper and the fourth scraper so that the two second scrapers respectively slide and cooperate with the third scraper and the fourth scraper for cleaning; two collection boxes are slidably connected in the door frame, and the two collection boxes respectively cooperate with the third scraper and the fourth scraper for dirt collection.

[0008] Preferably, the cleaning mechanism includes two first scrapers, which are symmetrically distributed on the front and rear sides of the protective door and respectively cooperate with the front and rear surfaces of the protective door for sliding cleaning; a first driving mechanism is fixedly installed on the door frame, and the output end of the first driving mechanism is respectively connected to the protective door and the two first scrapers for transmission, so that the two first scrapers and the protective door slide relative to each other; two first sliding grooves are opened in the door frame, and the two first sliding grooves are symmetrically distributed on both sides of the mounting groove and are both connected to the mounting groove, and the two first scrapers correspond one-to-one to the two first sliding grooves and cooperate with the limited sliding.

[0009] Preferably, the first driving mechanism includes a first motor, a first screw rod is coaxially fixed on the output shaft of the first motor, the first screw rod is horizontally arranged along the sliding direction of the protective door, the first screw rod passes through the door frame and extends into the mounting groove and is threadedly connected to the protective door, and the first screw rod is rotatably connected to the door frame; the first screw rod is fixedly sleeved on the first wheel axle, and the first wheel axle is respectively provided with a third transmission belt and a fourth transmission belt; the ends of the third transmission belt and the fourth transmission belt away from the first wheel axle are both transmission-sleeved on a first driven wheel, and the two first driven wheels are both fixedly sleeved on a second screw rod, and the two second screw rods are symmetrically distributed on the front and rear sides of the first screw rod and are both parallel to the first screw rod; the two second screw rods both pass through the door frame and are rotatably connected to the door frame, and the two second screw rods correspond one-to-one to the two first scrapers and are threadedly connected.

[0010] Preferably, the power mechanism includes a second motor, a rotating shaft, a second drive assembly and a third drive assembly; the rotating shaft is coaxially fixed on the output shaft of the second motor, and the rotating shaft is transmission-connected to the second drive assembly and the third drive assembly; the second drive assembly and the third drive assembly cooperate with each other; the second drive assembly is transmission-connected to the two second scrapers respectively, for driving the two second scrapers to slide relative to the surface of the corresponding protective door and the surface of the two first scrapers respectively; the third drive assembly is transmission-connected to the third scraper and the fourth scraper respectively, for driving the third scraper and the fourth scraper to clean the dirt scraped off by the two second scrapers.

[0011] Preferably, a second slide groove and a fourth slide groove are provided in the door frame, and the second slide groove and the fourth slide groove are distributed at both end ends of the sliding track of the protective door; the second slide groove is connected to the mounting groove and is limited and slidably matched with one of the second scrapers; the fourth slide groove is connected to the entrance and exit and is limited and slidably matched with the other second scraper; two third slide grooves are provided in the door frame, and the third scraper and the fourth scraper are respectively limited and slidably matched with the two third slide grooves; a spring is fixedly provided on the third scraper and the fourth scraper, and the springs are fixedly connected to the door frame and arranged along the direction of the third slide groove; the second slide groove is connected to one of the third slide grooves, and the fourth slide groove is connected to the other third slide groove; the collection box is connected to the third slide groove.

[0012] Preferably, a first give way slot, a second give way slot and a third give way slot are opened in the door frame, and the second give way slot and the third give way slot are both connected to the first give way slot; the second motor is fixedly arranged at the bottom of the first give way slot; the second drive assembly is arranged in the second give way slot, and the third drive assembly is arranged in the third give way slot.

[0013] Preferably, the second driving assembly includes a third screw rod and a fourth screw rod, the third screw rod is fixedly sleeved on the second wheel axle, and the second wheel axle is respectively transmitted and sleeved on the first transmission belt and the fifth transmission belt; the fifth transmission belt is transmitted and sleeved on one end away from the second wheel axle, and the third driven wheel is fixedly sleeved on the fourth screw rod; the third screw rod and the fourth screw rod both pass through the door frame and are rotatably connected to the door frame; the third screw rod and the fourth screw rod are respectively threadedly connected to the two second scrapers; the first transmission belt is transmitted and sleeved on one end away from the second wheel axle, and the second driving wheel is coaxially fixedly connected to the second rotating ring, and the second rotating ring is rotatably sleeved on the rotating shaft; the second fixing ring is fixedly sleeved on the rotating shaft, and the first ratchet mechanism is provided on the second fixing ring; the ratchet in the first ratchet mechanism is fixedly sleeved within the inner circle of the first driving wheel and rotatably sleeved with the second fixing ring; the pawl in the first ratchet mechanism is rotatably connected to the second fixing ring.

[0014] The cam is fixedly mounted on the drive shaft of the first driving wheel and the drive gear of the second driving wheel, and the cam is fixedly mounted on the drive shaft of the first driving wheel and the drive gear of the second driving wheel.

[0015] Preferably, the transmission sleeve on the first driving wheel is connected to the second transmission belt, the second transmission belt is connected to the second driven wheel at one end away from the first driving wheel, the second driven wheel is fixedly connected to the support shaft, the support shaft is rotatably connected to the door frame, and the second wire wheel is fixedly mounted on the support shaft.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the device uses a cleaning mechanism to scrape the dirt on the protective door, scrapes the dirt into two third chutes through two second scrapers, and then cleans the dirt into two collection boxes through the third scraper and the fourth scraper, so as to collect the cleaned dirt and prevent it from being scattered into the indoor environment and polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is an enlarged schematic diagram of point A of the present invention;

[0019] Figure 3 It is a schematic structural diagram of the collection box of the present invention;

[0020] Figure 4 is a schematic diagram of a first driving mechanism of the present invention;

[0021] Figure 5 It is an enlarged schematic diagram of point B of the present invention;

[0022] Figure 6 It is an enlarged schematic diagram of point C of the present invention;

[0023] Figure 7 is a schematic diagram of the internal connections of the first driving mechanism of the present invention;

[0024] Figure 8 It is a schematic diagram of the output end of the cleaning mechanism of the present invention;

[0025] Figure 9 It is an enlarged schematic diagram of point D of the present invention;

[0026] Figure 10 It is a schematic diagram of the power mechanism of the present invention;

[0027] Figure 11 is a schematic diagram of the ratchet mechanism of the present invention;

[0028] Figure 12 is a schematic structural diagram of the third drive assembly of the present invention;

[0029] Figure 13 It is an enlarged schematic diagram of point E of the present invention;

[0030] Figure 14 is a schematic diagram of a second drive assembly of the present invention;

[0031] Figure 15 It is an enlarged schematic diagram of F of the present invention.

[0032] In the figure: 1. door frame; 2. mounting box; 3. first motor; 4. slide rail; 5. collection box; 6. fourth slide; 7. first give way slot; 8. first transmission belt; 9. second transmission belt; 10. guide slot; 11. transmission block; 12. mounting slot; 13. first screw rod; 14. first scraper; 15. second screw rod; 16. first slide; 17. third transmission belt; 18. fourth transmission belt; 19. first driven pulley; 20. second slide; 21. first axle; 22. protective door; 23. third screw rod; 24. second scraper; 25. fifth transmission belt; 26. third scraper; 27. steel cable; 28. spring; 29. ​​second axle; 30. first line wheel; 31. second motor; 32. rotating shaft; 33. first driving wheel; 34. rotating disk; 35. electric push rod; 36. first ratchet; 37. first fixed rod; 38. first fixed ring; 39. first rotating ring; 40. first clamping claw; 41. second driven wheel; 42. supporting shaft; 43. second wire pulley; 44. fourth screw rod; 45. fourth scraper; 46. third driven wheel; 47. entrance and exit; 48. second make way slot; 49. third slide slot; 50. third make way slot; 51. connecting shaft; 52. second ratchet; 53. second fixed ring; 54. second clamping claw; 55. second rotating ring; 56. second driving wheel; 57. second fixed rod. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] A medical radiation protection device includes a door frame 1 and a protective door 22. The left side of the door frame 1 is cut into an entrance 47, which is arranged horizontally from front to back. The protective door 22 slides with the door frame 1 in a limited manner, matching the entrance 47. The protective door 22 slides from left to right to control the closing and opening of the entrance 47. The height of the protective door 22 from bottom to top is greater than the height of the entrance 47 from bottom to top, ensuring that the protective door 22 seals the entrance 47.

[0035] A mounting slot 12 is excavated in the door frame 1 and extends horizontally from left to right. The slot 12 connects to and extends to the entrance 47. A protective door 22 is slidably mounted within the slot 12. Horizontally arranged slide rails 4 are fixedly and sealed to the bottom of the slot 12. These slide rails 4 extend into the entrance 47. A slide slot is defined at the lower end of the protective door 22. A slide slot seal is mounted on the slide rail 4. The protective door 22 is slidably connected to the slide rail 4, which serves as a guide for the protective door 22.

[0036] The left end of the door frame 1 is fixedly connected to the installation box 2, which houses the first drive mechanism. The first drive mechanism is used to both drive the protective door 22 to open or close the entrance 47 and to drive the first scrapers 14 to slide left and right along the first chute 16. This means that the two first scrapers 14 use their scraping heads to clean the front and rear surfaces of the protective door 22, respectively.

[0037] The first drive mechanism includes a first motor 3 fixedly mounted on the mounting box 2 and two second screw rods 15 parallel to each other and located at the same height. The output shaft of the first motor 3 passes horizontally through the mounting box 2 from left to right and is rotatably connected to the mounting box 2. A first screw rod 13 is coaxially fixed to the output shaft of the first motor 3. The first screw rod 13 passes through the door frame 1 and extends into the mounting groove 12. The first screw rod 13 is located at the top of the mounting groove 12 and is rotatably connected to the door frame 1. The first screw rod 13 is threadedly connected to the transmission block 11, which is slidably mounted in the mounting groove 12. The lower end of the transmission block 11 is fixedly connected to the protective door 22 to drive the protective door 22 to slide left and right.

[0038] Two symmetrically arranged first chutes 16 are excavated within the door frame 1, symmetrically distributed on the front and rear sides of the mounting slot 12. The horizontal length of each first chute 16 from left to right is the same as the horizontal length of the protective door 22 from left to right, and the vertical height of each first chute 16 from bottom to top is equal to the vertical height of the entrance 47 from bottom to top. Both first chutes 16 are connected to the mounting slot 12. Directly above each first chute 16, a matching and connected limit slot is provided. Each first chute 16 slides within a first scraper 14 positioned vertically in an upper and lower position. The upper ends of each first scraper 14 are inserted into corresponding limit slots and slide in a limited manner with the door frame 1. The scraping heads of each first scraper 14 are one-way scrapers and slide in conjunction with the protective door 22 to scrape dirt or debris adhering to the front and rear surfaces of the protective door 22.

[0039] The one-way scraper head of the first scraper 14 is fixedly mounted on the left side of the first scraper 14 near the end of the protective door 22. When the protective door 22 slides to the left, i.e., the entrance 47 is opened, the scraper head does not clean the surface of the protective door 22. When the protective door 22 slides to the right, i.e., the entrance 47 is closed, the scraper head cleans the surface of the protective door 22.

[0040] Two second screw rods 15 extend from left to right through the door frame 1 and into the corresponding stop slots at the upper ends of the two first guide slots 16. Both second screw rods 15 are rotatably connected to the door frame 1. Each second screw rod 15 is threadedly connected to the first scraper 14 within the corresponding first guide slot 16, forcing the first scraper 14 to slide left and right within the first guide slot 16. The two second screw rods 15 are symmetrical about the central axis of the first screw rod 13.

[0041] The ends of the two second screw rods 15 located within the installation box 2 are fixedly connected to the first driven wheel 19. The end of the first screw rod 13 located within the installation box 2 is fixedly connected to the first wheel axle 21. The first wheel axle 21 is composed of two identical wheels and a cylindrical connecting shaft. The two wheels are coaxially fixed on either side of the cylindrical connecting shaft, and the axis radius of the circular connecting shaft is larger than the wheel radius of the wheels. The wheel of the first wheel axle 21 close to the door frame 1 is connected to the first driven wheel 19 on the front second screw rod 15 through the same third transmission belt 17. The wheel of the first wheel axle 21 away from the door frame 1 is connected to the first driven wheel 19 on the rear second screw rod 15 through the same fourth transmission belt 18. The rotation of the first screw rod 13 drives the first wheel axle 21 to rotate, and the rotation of the first wheel axle 21 drives the two second screw rods 15 through the third transmission belt 17 and the fourth transmission belt 18 respectively.

[0042] A second chute 20 and a fourth chute 6 are excavated within the door frame 1. The second chute 20 is located to the left of the mounting slot 12 and is arranged vertically from top to bottom. The second chute 20 communicates with both the mounting slot 12 and the two first chute slots 16. The vertical height of the second chute 20 from bottom to top is the same as the vertical height of the first chute slots 16 from top to bottom. The horizontal width of the second chute 20 from front to back is greater than the combined width of the mounting slot 12 and the two first chute slots 16. The second scraper 24 is arranged horizontally on the left and right sides in a limited sliding fit in the second sliding groove 20. The second scraper 24 is scraped in cooperation with the protective door 22 and the two first scrapers 14. That is, when the protective door 22 slides to the leftmost end of the mounting groove 12, the scraping head of the second scraper 24 slides in contact with the left end face of the protective door 22 to clean the dirt on the left end face of the protective door 22; when the two first scrapers 14 slide along the front and rear surfaces of the protective door 22 to the leftmost end of the mounting groove 12 respectively, the scraping head of the second scraper 24 slides in contact with the scraping heads of the two first scrapers 14 to clean the dirt adhered to the two first scrapers 14.

[0043] The fourth slide groove 6 is located in the door frame 1 on the right side of the entrance and exit 47. The fourth slide groove 6 is a vertical T-shaped groove opened from top to bottom. The fourth slide groove 6 connects the entrance and exit 47 and corresponds to the installation groove 12. The slide rail 4 extends into the fourth slide groove 6, and the protective door 22 slides and seals with the fourth slide groove 6 to ensure sealing. The vertical height of the fourth slide groove 6 from top to bottom is the same as the vertical height of the entrance and exit 47 from top to bottom. Another second scraper 24 arranged horizontally from right to left is limited and slidably engaged in the fourth slide groove 6. The second scraper 24 slides and abuts against the protective door 22, that is, when the protective door 22 slides to the rightmost end of the installation groove 12, the scraping head of the second scraper 24 slides and abuts against the right end face of the protective door 22, and the second scraper 24 slides downward to scrape dirt on the right end face of the protective door 22.

[0044] A first clearance groove 7 and a second clearance groove 48 are excavated within the door frame 1 and are interconnected. The first clearance groove 7 is a T-shaped groove excavated horizontally from left to right, comprising a horizontal groove extending from front to back and a vertical groove extending from bottom to top. The second clearance groove 48 is excavated horizontally from left to right, located both at the rear of the door frame 1 and below the rear end of the second chute 20. The second clearance groove 48 is connected to the horizontal groove of the first clearance groove 7 and extends rightward to below the rear end of the fourth chute 6.

[0045] A power mechanism is mounted within the first clearance slot 7, comprising a second motor 31, a rotating shaft 32, a second drive assembly, and a third drive assembly. The second motor 31 is fixedly mounted at the bottom of the vertical slot of the first clearance slot 7, with its output shaft pointing vertically upward. The output shaft of the second motor 31 is coaxially fixed with the rotating shaft 32. The second drive assembly is positioned within the horizontal slot of the first clearance slot 7 and within the second clearance slot 48. Both the second and third drive assemblies are in driving connection with the output shaft of the second motor 31. The second and third drive assemblies work in tandem.

[0046] The output end of the second drive assembly is transmission-connected to the two second scrapers 24, driving them to slide up and down within the corresponding second and fourth chutes 20 and 6, respectively, thereby cleaning the left and right end surfaces of the protective door 22. The second drive assembly includes a third screw 23, a fourth screw 44, a second rotating ring 55, a second fixed ring 53, a second ratchet 52, and a second driving wheel 56. The second fixed ring 53 is fixedly coupled to the rotating shaft 32. The upper end surface of the second fixed ring 53 is fixedly coupled to a vertically positioned second fixed rod 57, on which a second pawl 54 is rotatably coupled. The second ratchet 52 is rotatably coupled to the outer circumference of the second fixed ring 53. The second fixed rod 57, the second pawl 54, and the second ratchet 52 together form the first ratchet mechanism. The second driving wheel 56 is fixedly coupled to the outer circumference of the second ratchet 52 and coaxially fixedly coupled to the second rotating ring 55, which is rotatably coupled to the rotating shaft 32.

[0047] The second driving wheel 56 is coupled to the first transmission belt 8. The end of the first transmission belt 8, away from the second driving wheel 56, is coupled to the rotating pulley at the lower end of the second axle 29. The second axle 29 is constructed identically to the first axle 21 and is fixedly coupled to the lower end of the third screw 23. The third screw 23 extends vertically upward through the door frame 1 between the second chute 20 and the second clearance groove 48 and into the second chute 20. The third screw 23 is rotatably connected to the door frame 1 and is threadedly connected to the second scraper 24 within the second chute 20. This drives the second scraper 24 up and down to clean the left end surface of the protective door 22.

[0048] The rotating wheel at the upper end of the second axle 29 is coupled to the fifth transmission belt 25. The end of the fifth transmission belt 25 away from the second axle 29 is coupled to the third driven pulley 46. The third driven pulley 46 is fixedly coupled to the lower end of the fourth screw rod 44. The fourth screw rod 44 extends vertically upward through the door frame 1 between the fourth chute 6 and the second clearance groove 48 and extends to the fourth chute 6. The fourth screw rod 44 is rotatably connected to the door frame 1 and is threadedly connected to the second scraper 24 in the fourth chute 6. The fourth screw rod 44 is used to drive the second scraper 24 to move up and down to clean the right end surface of the protective door 22.

[0049] The third screw rod 23 and the fourth screw rod 44 are both reciprocating screw rods, and the second wheel shaft 29 and the third driven wheel 46 are both located in the second clearance groove 48.

[0050] Two horizontally arranged third chutes 49 are excavated inside the door frame 1, symmetrically disposed at the left and right ends of the door frame 1. The third scraper 26 is limitedly slidably engaged within the third chutes 49 at the left end. The third chutes 49 are located directly below and communicate with the second chutes 20. The horizontal width of the third chutes 49 from back to front is greater than the horizontal width of the second chutes 20 from back to front, and the horizontal length of the third chutes 49 from left to right is equal to the horizontal length of the second chutes 20 from left to right.

[0051] An L-shaped limiting groove is provided on the door frame 1 to the left of the third slide groove 49, and the L-shaped limiting groove is connected to the third slide groove 49; a rectangular limiting groove is provided on the door frame 1 to the right of the third slide groove 49, the bottom surface of the rectangular limiting groove is lower than the bottom surface of the third slide groove 49, the top surface of the rectangular limiting groove is lower than the top surface of the third slide groove 49, and the rectangular limiting groove is connected to the third slide groove 49.

[0052] The third scraper 26 slides forward and backward along the third chute 49 at its left end, cleaning dirt scraped off the left side of the protective door 22 and the two first scrapers 14 by the second scraper 24. The left end of the third scraper 26 is fixedly connected to an L-shaped limit slider that mates with and slides within the L-shaped limit. The right end of the third scraper 26 is fixedly connected to a rectangular limit slider that mates with and slides within the rectangular limit slot.

[0053] The third slide groove 49 on the right side is limited and slides in cooperation with the fourth scraper 45. The third slide groove 49 is located directly below the fourth slide groove 6 and is connected to the fourth slide groove 6. The horizontal width of the third slide groove 49 from back to front is greater than the horizontal width of the fourth slide groove 6 from back to front. The horizontal length of the third slide groove 49 from left to right is equal to the horizontal length of the fourth slide groove 6 from left to right.

[0054] Another rectangular limiting groove is defined in the door frame 1 immediately to the left of the third chute 49. The bottom surface of this rectangular limiting groove is lower than the bottom surface of the third chute 49, and the top surface of this rectangular limiting groove is lower than the top surface of the third chute 49. This rectangular limiting groove is connected to the third chute 49. Another L-shaped limiting groove is defined in the door frame 1 immediately to the right of the third chute 49. This L-shaped limiting groove is connected to the third chute 49.

[0055] The left end face of the fourth scraper 45 is fixedly connected to another rectangular slider that slidably engages with the rectangular retaining groove. The right end face of the fourth scraper 45 is fixedly connected to another L-shaped retaining slider that slidably engages with the L-shaped retaining groove. The fourth scraper 45 slides from back to front along the third sliding groove 49 at its right end to clean dirt scraped off the right end face of the protective door 22 by the second scraper 24.

[0056] A third clearance groove 50 is excavated in the door frame 1, and the third drive assembly is disposed within the third clearance groove 50. The third clearance groove 50 is arranged horizontally from left to right, with the left end of the third clearance groove 50 connected to the first clearance groove 7. The left and right ends of the third clearance groove 50 are located directly in front of the third chute 49 at the left and right ends of the door frame 1, respectively.

[0057] The output end of the third drive assembly is respectively connected to the third scraper 26 and the fourth scraper 45 for driving the third scraper 26 to slide horizontally back and forth in the third slide groove 49 at the left end of the door frame 1, and is also used to drive the fourth scraper 45 to slide horizontally back and forth in the third slide groove 49 at the right end of the door frame 1.

[0058] The third drive assembly includes a first fixed ring 38, a first pawl 40, a first ratchet 36, a first driving pulley 33, a first rotating ring 39, a second transmission belt 9, a first reel 30, a second reel 43, and two steel cables 27. The first fixed ring 38 is coaxially rotated with the rotating shaft 32 and is located above the second fixed ring 53. The top of the rotating shaft 32 is coaxially fixed with the connecting shaft 51, which is a short rectangular shaft. The first fixed ring 38 and the connecting shaft 51 have both a sliding and transmission fit. This ensures that when the first fixed ring 38 is connected to the connecting shaft 51, it rotates synchronously with the connecting shaft 51. When the first fixed ring 38 is out of contact with the connecting shaft 51, the first fixed ring 38 only rotates idly around the central axis of the rotating shaft 32.

[0059] The outer circumference of the first fixed ring 38 is rotatably coupled to the first ratchet 36, and the outer circumference of the first ratchet 36 is fixedly coupled to the first driving wheel 33. The first driving wheel 33 is coaxially and fixedly connected to the first rotating ring 39, which is rotatably coupled to the rotating shaft 32. The upper end surface of the first fixed ring 38 is fixedly coupled to the vertically upward first fixed rod 37, and the first clamping claw 40 is rotatably coupled to the first fixed rod 37. The orientation of the first clamping claw 40 is opposite to that of the second clamping claw 54. The first fixed rod 37, the first clamping claw 40, and the first ratchet 36 together form a second ratchet mechanism that has the opposite effect of the first ratchet mechanism.

[0060] The first driving wheel 33 is connected to the second driving belt 9, and the end of the second driving belt 9 away from the first driving wheel 33 is connected to the second driven wheel 41. The second driven wheel 41 is fixedly connected to the support shaft 42, which is placed vertically upward and rotatably assembled on the bottom surface of the right end of the third clearance groove 50.

[0061] The upper end of the first driving wheel 33 is coaxially fixed with the first spool 30. The first spool 30 has a circular connecting hole axially provided therein. A rotating disk 34 is coaxially fixedly embedded in the circular connecting hole. The lower end of the rotating disk 34 is fixedly equipped with an electric push rod 35. The output shaft of the electric push rod 35 is vertically downward and fixedly connected to the first fixing ring 38, and is used to push the first fixing ring 38 to move downward along the axial direction of the rotating shaft 32. The downward extension length of the output shaft of the electric push rod 35 is less than the downward movement distance required for the first claw 40 to disengage from the engaging contact with the first ratchet 36, ensuring that when the first fixing ring 38 is pushed out of the connecting shaft 51, the first claw 40 is always engaged with the first ratchet 36.

[0062] One end of a steel cable 27 is fixedly connected to the outer circumference of the first pulley 30. The other end of this cable 27 is fixedly connected to the end of the third scraper 26 near the L-shaped limit slider. This cable 27 passes through the door frame 1 between the left third slide slot 49 and the third clearance slot 50 and slides with the door frame 1. To ensure the third scraper 26 can return to its original position after cleaning, a spring 28 is fixedly attached to the rectangular limit slider to which it is fixedly connected. The end of this spring 28, away from the rectangular limit slider, is fixedly connected to the door frame 1. When the third scraper 26 slides forward, it compresses this spring 28, generating a spring force that serves to return the third scraper 26 to its original position.

[0063] The upper end of the support shaft 42 is rotatably coupled to a second pulley 43. The outer circumference of the second pulley 43 is fixedly connected to one end of another steel cable 27. The other end of this cable 27 is fixedly connected to the end of the fourth scraper 45 near the rectangular stopper. This cable 27 passes through the door frame 1 between the third right-side slot 49 and the third clearance slot 50 and slides with the door frame 1. Similarly, to ensure that the fourth scraper 45 can return to its original position after cleaning, another spring 28 is fixedly mounted on the L-shaped stopper to which it is fixedly connected. The end of this spring 28, away from the L-shaped stopper, is fixedly connected to the door frame 1. When the fourth scraper 45 slides forward, it compresses this spring 28, generating a spring force that serves to return the fourth scraper 45 to its original position.

[0064] Two springs 28 are arranged horizontally along the front and rear sides, and two steel cables 27 are located on the same side of the corresponding pulley. This ensures that the pulley winds and releases the steel cables 27 simultaneously and in the same direction. The two steel cables 27 are used to pull the third scraper 26 and the fourth scraper 45 to slide within their corresponding chutes, thereby cleaning dirt.

[0065] Two inclined guide grooves 10 are excavated within the door frame 1. These two guide grooves 10 correspond one-to-one with the two third chutes 49, and are located within the door frame 1 below the front ends of the corresponding third chutes 49. The guide grooves 10 are connected to the corresponding third chutes 49. The upper notch of the guide groove 10 is equal in length from left to right to the length of the corresponding third chutes 49 from left to right. The lower notch of the guide groove 10 is opened diagonally downward away from the corresponding third chutes 49. The guide grooves 10 are used to convey and guide dirt scraped off the scraper. The lower notch of each guide groove 10 faces a corresponding collection box 5, and the guide groove 10 is connected to the collection box 5. Both collection boxes 5 are slidably embedded in the front end of the door frame 1, ensuring that dirt is collected in both collection boxes 5.

[0066] Working principle:

[0067] When using the protective device, first seal and install the device in the installation opening of the isolation chamber where it needs to be installed. The entrance and exit 47 is not closed, and the left end face of the protective door 22 is located at the leftmost side of the installation groove 12. At this time, all components are in the initial state. That is, the first scraper 14 is located at the rightmost side of the first slide 16. One second scraper 24 is located at the uppermost end of the second slide 20, and the other second scraper 24 is located at the uppermost end of the fourth slide 6. The third scraper 26 is located at the rearmost end of the third slide 49 on the left side of the corresponding protective door 22, and the fourth scraper 45 is located at the rearmost end of the third slide 49 on the right side of the corresponding protective door 22. The two steel cables 27 are in a released, straightened and stretched state, and the two springs 28 are at their natural length. The first fixing ring 38 and the connecting shaft 51 are in mutual engagement and contact to form a transmission fit. The output shaft of the electric push rod 35 does not extend.

[0068] Then the entrance and exit 47 is closed, the first motor 3 is started, the output shaft of the first motor 3 drives the first screw rod 13 to rotate, the first screw rod 13 pushes the transmission block 11 to move rightward, and the transmission block 11 drives the protective door 22 to move rightward.

[0069] The rotation of the first screw rod 13 also drives the rotation of the first axle 21. The rotation of the first axle 21 drives the two second screw rods 15 via the third transmission belt 17 and the fourth transmission belt 18. The two second screw rods 15 push the corresponding two first scrapers 14 to slide synchronously to the left within the corresponding first chute 16. The one-way scraping heads on the two first scrapers 14 slide relative to the front and rear surfaces of the protective door 22, respectively, to scrape and clean the front and rear surfaces of the protective door 22.

[0070] When the protective door 22 slides along the slide rail 4 and is inserted into the fourth chute 6, the right end surface of the protective door 22 is sealed against the door frame 1, and the first motor 3 is turned off. At the same time, the two first scrapers 14 reach the leftmost end of their respective first chute 16.

[0071] Then, the second motor 31 is started, and the output shaft of the second motor 31 drives the rotating shaft 32 to rotate. The rotating shaft 32 drives the second fixing ring 53 and the first fixing ring 38 to rotate synchronously. The second fixing ring 53 drives the second fixing rod 57 to rotate, and the second fixing rod 57 drives the second pawl 54 to rotate around the central axis of the second fixing ring 53. At this time, the second pawl 54 is fixedly engaged with the second ratchet 52, and the second pawl 54 drives the second ratchet 52 to rotate. The second ratchet 52 drives the second driving wheel 56 to rotate. The second rotating ring 55 rotates along with the second driving wheel 56 with the central axis of the rotating shaft 32 as the rotation axis.

[0072] When the second driving wheel 56 rotates, it drives the first wheel shaft 21 to rotate through the first transmission belt 8. When the first wheel shaft 21 rotates, it not only directly drives the third screw rod 23 to rotate, but also drives the third driven wheel 46 to rotate through the fifth transmission belt 25. The third driven wheel 46 drives the fourth screw rod 44 to rotate.

[0073] The third screw 23 pushes the second scraper 24 in the second chute 20 downward. This second scraper 24 scrapes the dirt scraped off the two first scrapers 14 downward into the third chute 49 on the left side of the protective door. The fourth screw 44 pushes the second scraper 24 in the fourth chute 6 downward. This second scraper 24 scrapes the dirt on the right end surface of the protective door 22 downward into the third chute 49 on the right side of the protective door. When the second scraper 24 reaches its lowest point, the second motor 31 is turned off.

[0074] While the second scraper 24 is cleaning the right end faces of the two first scrapers 14 and the protective door 22, the rotation of the first fixing ring 38 will drive the first fixing rod 37 to rotate around the central axis of the first fixing ring 38, and the first fixing rod 37 will drive the first claw 40 to rotate synchronously. At this time, the movement direction of the first claw 40 is the same as the direction of the claw groove in the first ratchet 36. The first ratchet 36 and the first claw 40 are not engaged, and the first ratchet 36 does not rotate.

[0075] The second motor 31 is then turned on again, causing the output shaft of the second motor 31 to rotate in reverse. This reverse rotation of the output shaft of the second motor 31 drives the rotating shaft 32 in reverse. At this point, the rotating shaft 32 drives the first fixed ring 38 and the second fixed ring 53 to rotate synchronously. The reverse rotation of the first fixed ring 38 drives the first fixed rod 37 to rotate about the central axis of the first fixed ring 38. The first fixed rod 37 drives the first pawl 40 to engage with the first ratchet 36. The first ratchet 36 rotates along with the first fixed ring 38. The first ratchet 36 drives the first driving wheel 33 to rotate. The first rotating ring 39 rotates along with the first driving wheel 33 about the central axis of the rotating shaft 32. The first driving wheel 33 drives the second driven wheel 41 to rotate via the second transmission belt 9.

[0076] At this time, the first driving wheel 33 drives the first spool 30 to rotate. The rotation of the first spool 30 pulls the steel cable 27 fixedly connected to its outer circumference, causing the steel cable 27 to be wound around the first spool 30. At the same time, the steel cable 27 pulls the third scraper 26 to slide forward along the third chute 49 on the left side of the protective door 22. During the sliding process of the third scraper 26, the dirt in the third chute 49 is pushed into the guide groove 10 connected to the third chute 49. The dirt enters the collection box 5 corresponding to the guide groove 10 through the guide groove 10.

[0077] At the same time, when the second driven wheel 41 rotates, it drives the second spool 43 to rotate. The second spool 43 pulls the steel cable 27 fixedly connected to its outer circumference, causing the steel cable 27 to be wound around the second spool 43. At the same time, the steel cable 27 pulls the fourth scraper 45 to slide forward along the third chute 49 on the right side of the protective door 22. As the fourth scraper 45 slides, it pushes the dirt in the third chute 49 into the guide groove 10 connected to the third chute 49. The dirt then enters the collection box 5 corresponding to the guide groove 10 through the guide groove 10.

[0078] When the third scraper 26 and the fourth scraper 45 slide forward, the spring 28 fixedly connected to the two scrapers is compressed to generate elastic force.

[0079] After the third scraper 26 and the fourth scraper 45 slide forward to the front end of the corresponding third sliding groove 49, the second motor 31 stops rotating.

[0080] When the protective door 22 slides leftward to open the entrance 47, the first motor 3 is activated, and its output shaft reverses. This drives the first screw 13 to rotate, which in turn drives the transmission block 11, which in turn drives the protective door 22 to slide back to the left. At this point, the first screw 13, via the transmission belt, drives the two second screws 15 in reverse, causing the two first scrapers 14 to slide back. When the protective door 22 returns to its initial position, the two first scrapers 14 return to their initial positions, and the first motor 3 is shut down. During this process, the two first scrapers 14 do not clean the protective door 22.

[0081] At the same time as the first motor 3 starts, the second motor 31 starts, and the second motor 31 rotates forward, thereby returning the two second scrapers 24 to their initial positions. Before the second motor 31 starts, the electric push rod 35 starts, and the output shaft of the electric push rod 35 pushes the first fixed ring 38 out of engagement with the connecting shaft 51. The electric push rod 35 then shuts down. During the disengagement process, the first claw 40 remains fixedly in contact with the first ratchet 36. At this time, under the action of the elastic force of the two springs 28, the third scraper 26 and the fourth scraper 45 are pushed to reset. During the reset of the third scraper 26, the corresponding steel cable 27 is pulled, and the steel cable 27 is released from the first pulley 30, and the first pulley 30 rotates under the action of the steel cable 27. Since the first fixed ring 38 is out of engagement with the connecting shaft 51, the first pulley 30 drives the first driving pulley 33 to rotate idly around the rotating shaft 32. As the fourth scraper 45 is reset, the corresponding steel cable 27 is pulled, releasing it from the second pulley 43. This action causes the second pulley 43 to rotate, driving the second driven pulley 41 to rotate. Once the third and fourth scrapers 26 and 45 are reset, the electric push rod 35 is activated again, causing its output shaft to retract, driving the first fixing ring 38 to engage with the connecting shaft 51 again and return to its initial position, preparing for the next cleaning operation.

[0082] Then the electric push rod 35 and the second motor 31 are turned off to prepare for the next work.

[0083] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A medical radiation protection device, comprising a door frame (1) and a protective door (22) placed vertically, wherein the door frame (1) is provided with an entrance and exit (47), a mounting groove (12) is provided in the door frame (1), and the protective door (22) is slidably arranged in the mounting groove (12); the protective door (22) matches the entrance and exit (47) and is used to close the entrance and exit (47); and is characterized in that: A cleaning mechanism is provided in the door frame (1), and the cleaning mechanism is used to scrape dirt on the front and rear surfaces of the protective door (22) and the right vertical side surface that slides through the entrance and exit (47). The output end of the cleaning mechanism includes two second scrapers (24); a first driving mechanism is fixedly installed on the door frame (1), and the output end of the first driving mechanism is both transmission-connected to the protective door (22) and transmission-coordinated with the cleaning mechanism, so that the cleaning mechanism and the surface of the protective door (22) slide relative to each other; a power mechanism is fixedly installed in the door frame (1), and the output end of the power mechanism is both transmission-connected to the two second scrapers (24) and transmission-coordinated with the third scraper (26) and the fourth scraper (45), so that the two second scrapers (24) slide and cooperate with the third scraper (26) and the fourth scraper (45) respectively for cleaning; two collecting boxes (5) are slidably connected in the door frame (1), and the two collecting boxes (5) cooperate with the third scraper (26) and the fourth scraper (45) respectively for collecting dirt; The cleaning mechanism comprises two first scrapers (14), which are symmetrically distributed on the front and rear sides of the protective door (22) and respectively slide and clean the front and rear surfaces of the protective door (22); a first driving mechanism is fixedly installed on the door frame (1), and the output end of the first driving mechanism is respectively connected to the protective door (22) and the two first scrapers (14) in a transmission manner so that the two first scrapers (14) and the protective door (22) slide relative to each other; two first sliding grooves (16) are provided in the door frame (1), and the two first sliding grooves (16) are symmetrically distributed on both sides of the installation groove (12) and are both connected to the installation groove (12); the two first scrapers (14) correspond to the two first sliding grooves (16) one by one and slide in a limited manner; The first driving mechanism comprises a first motor (3), a first screw rod (13) is coaxially fixed on the output shaft of the first motor (3), the first screw rod (13) is arranged horizontally along the sliding direction of the protective door (22), the first screw rod (13) passes through the door frame (1) and extends into the mounting groove (12) to be threadedly connected to the protective door (22), and the first screw rod (13) is rotatably connected to the door frame (1); a first wheel shaft (21) is fixedly sleeved on the first screw rod (13), and a third transmission belt (17) and a fourth transmission belt (17) are respectively sleeved on the first wheel shaft (21). The third transmission belt (17) and the fourth transmission belt (18) are both connected to a first driven wheel (19) at their ends away from the first wheel shaft (21), and the two first driven wheels (19) are both fixedly connected to a second screw rod (15). The two second screw rods (15) are symmetrically distributed on the front and rear sides of the first screw rod (13) and are parallel to the first screw rod (13). The two second screw rods (15) pass through the door frame (1) and are rotatably connected to the door frame (1). The two second screw rods (15) correspond to the two first scrapers (14) one by one and are threadedly connected.

2. A medical radiation protection device according to claim 1, characterized in that: The power mechanism comprises a second motor (31), a rotating shaft (32), a second drive assembly and a third drive assembly; the rotating shaft (32) is coaxially fixed to the output shaft of the second motor (31), and the rotating shaft (32) is transmission-connected to the second drive assembly and the third drive assembly; the second drive assembly and the third drive assembly are linked together; the second drive assembly is transmission-connected to the two second scrapers (24) respectively, and is used to drive the two second scrapers (24) to slide relative to the surface of the corresponding protective door (22) and the surface of the two first scrapers (14); the third drive assembly is transmission-connected to the third scraper (26) and the fourth scraper (45) respectively, and is used to drive the third scraper (26) and the fourth scraper (45) to clean the dirt scraped off by the two second scrapers (24).

3. A medical radiation protection device according to claim 2, characterized in that: A second slide groove (20) and a fourth slide groove (6) are provided in the door frame (1), and the second slide groove (20) and the fourth slide groove (6) are distributed at both ends of the sliding track of the protective door (22); the second slide groove (20) is connected to the mounting groove (12) and is limitedly slidably engaged with one of the second scrapers (24); the fourth slide groove (6) is connected to the entrance (47) and is limitedly slidably engaged with the other second scraper (24); two third slide grooves (49) are provided in the door frame (1), and the third scrapers (24) are limitedly slidably engaged with each other. The plate (26) and the fourth scraper (45) are respectively engaged in limited sliding with the two third chutes (49); a spring (28) is fixedly provided on each of the third scraper (26) and the fourth scraper (45), and the spring (28) is fixedly connected to the door frame (1) and arranged along the direction of the third chutes (49); the second chutes (20) are connected to one of the third chutes (49), and the fourth chutes (6) are connected to the other third chutes (49); the collection box (5) is connected to the third chutes (49).

4. The medical radiation protection device according to claim 2, characterized in that: A first give-way slot (7), a second give-way slot (48) and a third give-way slot (50) are provided in the door frame (1); the second give-way slot (48) and the third give-way slot (50) are both communicated with the first give-way slot (7); the second motor (31) is fixedly arranged at the bottom of the first give-way slot (7); the second drive assembly is arranged in the second give-way slot (48), and the third drive assembly is arranged in the third give-way slot (50).

5. The medical radiation protection device according to claim 2, characterized in that: The second drive assembly comprises a third screw rod (23) and a fourth screw rod (44); the third screw rod (23) is fixedly sleeved with a second wheel shaft (29); the second wheel shaft (29) is respectively sleeved with a first transmission belt (8) and a fifth transmission belt (25); the end of the fifth transmission belt (25) away from the second wheel shaft (29) is sleeved with a third driven wheel (46); the third driven wheel (46) is fixedly sleeved on the fourth screw rod (44); the third screw rod (23) and the fourth screw rod (44) both pass through the door frame (1) and are rotatably connected to the door frame (1); the third screw rod (23) and the fourth screw rod (44) are respectively sleeved with the two first and second drive belts (8) and the ... The two scrapers (24) are threadedly connected; one end of the first transmission belt (8) away from the second wheel shaft (29) is transmission-sleeved on the second driving wheel (56); the second driving wheel (56) is coaxially fixedly connected to the second rotating ring (55); the second rotating ring (55) is rotatably sleeved on the rotating shaft (32); a second fixed ring (53) is fixedly sleeved on the rotating shaft (32); a first ratchet mechanism is provided on the second fixed ring (53); the ratchet in the first ratchet mechanism is fixedly sleeved within the inner circle of the second driving wheel (56) and rotatably sleeved on the second fixed ring (53); the ratchet in the first ratchet mechanism is rotatably connected to the second fixed ring (53).

6. The medical radiation protection device according to claim 2, characterized in that: The third driving assembly comprises a first wire wheel (30) and a second wire wheel (43), the outer circumferences of the first wire wheel (30) and the second wire wheel (43) are fixedly connected to a steel cable (27), and the first wire wheel (30) and the second wire wheel (43) are respectively wound with the corresponding steel cable (27); the steel cable (27) on the first wire wheel (30) passes through the door frame (1) and is fixedly connected to the third scraper (26), and the steel cable (27) on the second wire wheel (43) passes through the door frame (1) and is fixedly connected to the fourth scraper (45); the first wire wheel (30) is coaxially fixedly connected to the first driving wheel (33), the first driving wheel (33) is coaxially fixedly connected to the first rotating ring (39), and the first The rotating ring (39) is rotatably sleeved on the rotating shaft (32); a connecting shaft (51) is coaxially fixedly arranged on the rotating shaft (32); a first fixed ring (38) is coaxially slidably engaged with the connecting shaft (51); a second ratchet mechanism is arranged on the first fixed ring (38); a ratchet in the second ratchet mechanism is fixedly sleeved on the inner circle of the first driving wheel (33) and rotatably sleeved with the first fixed ring (38); a pawl in the second ratchet mechanism is rotatably connected to the first fixed ring (38); the inner circle of the first wire wheel (30) is fixedly sleeved with the rotating disk (34); an electric push rod (35) is fixedly arranged on the rotating disk (34); an output shaft of the electric push rod (35) is fixedly connected to the first fixed ring (38).

7. The medical radiation protection device according to claim 6, characterized in that: The first driving wheel (33) is connected to a second driving belt (9) through a transmission sleeve, and one end of the second driving belt (9) away from the first driving wheel (33) is connected to a second driven wheel (41) through a transmission sleeve, and the second driven wheel (41) is fixedly connected to a support shaft (42), and the support shaft (42) is rotatably connected to the door frame (1), and the second wire wheel (43) is fixedly mounted on the support shaft (42).

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