A new type of chain-driven radiation protection door

Abstract

The present invention discloses a novel chain-lifting driven radiation protection door, which relates to the technical field of radiation protection doors, and comprises a shell, wherein a radiation protection door is arranged on the inner side of the shell, the left side of the shell is fixedly connected to a chassis, a top plate is fixedly installed on the upper inner wall of the shell, a first rotating shaft is rotatably installed on the upper surface of one side of the top plate, and a second rotating shaft is rotatably installed on the upper surface of the other side of the top plate, the outer walls of the first rotating shaft and the second rotating shaft are both fixedly sleeved with a first sprocket, and the outer wall of the first sprocket is sleeved with a first chain. In the present invention, compared with traditional push-pull protection doors, traditional push-pull protection doors are all provided with track grooves at the bottom, and the grooves easily form obstacles or inconveniences for pedestrians and vehicles entering and exiting, while the radiation protection door adopts a lifting design, thereby avoiding the formation of track grooves and providing more convenient passage for pedestrians or objects.

Description

Technical Field

[0001] The invention relates to the technical field of radiation protection doors, and in particular to a novel chain-lifting driven radiation protection door. Background Art

[0002] Radiation protection doors are lead protection doors used for various radiation protection.

[0003] Most of the existing radiation protection doors are of the push-type, but there are track grooves on the upper and lower sides of the push-type, which makes it easy to form a protection door track groove on the entrance and exit channel, causing obstacles and inconvenience to pedestrians and vehicles entering and exiting. At the same time, since the existing push-type protection doors are driven by lead screws, their service life is limited. Therefore, we propose a new chain-lifting driven radiation protection door to solve the shortcomings of the existing technology. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a new chain-lifting driven radiation protection door.

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

[0006] A novel chain-lifting driven radiation protection door comprises a shell, a radiation protection door is arranged on the inner side of the shell, a left side of the shell is fixedly connected to a chassis, a top plate is fixedly installed on the upper inner wall of the shell, a first rotating shaft is rotatably installed on the upper surface of one side of the top plate, and a second rotating shaft is rotatably installed on the upper surface of the other side of the top plate, the outer walls of the first rotating shaft and the second rotating shaft are both fixedly sleeved with a first sprocket, the outer wall of the first sprocket is sleeved with a first chain, the outer wall of the second rotating shaft is fixedly sleeved with a second sprocket, the outer wall of the second sprocket is sleeved with a second chain, the first rotating shaft is connected to a first transmission shaft through a bevel gear transmission, the first transmission shaft is connected to a second transmission shaft through a bevel gear transmission, the second transmission shaft is connected to an adjusting rod through a gear transmission, the top end of the adjusting rod is fixedly connected to a second clamping block, the upper surface of the second clamping block is meshed with the first clamping block, the other side of the first clamping block is fixedly connected to a second output shaft, and the second output shaft is connected to a worm through a worm gear transmission.

[0007] As a preferred technical solution of the present invention, the radiation protection door includes a first lead plate layer, a first protective shell is fixedly connected to an outer wall of one side of the first lead plate layer, a second lead plate layer and a second protective shell are sleeved inside the first protective shell, the second protective shell is fixedly connected to the side wall of the second lead plate layer, a third lead plate layer is sleeved inside the second protective shell, buffer springs are provided on the bottom inner walls of the first protective shell and the second protective shell, first connecting pieces are fixedly connected to both sides of the top of the first lead plate layer, second connecting pieces are fixedly connected to both sides of the top of the second lead plate layer, and third connecting pieces are fixedly connected to both sides of the top of the third lead plate layer.

[0008] As a preferred technical solution of the present invention, the upper surfaces of the two third connecting members are fixedly connected with a first iron chain, the other end of the first iron chain is fixedly connected to the lower surface of the top plate, the upper surfaces of the two third connecting members are fixedly connected with a second iron chain, the other end of the second iron chain is fixedly connected to the lower surface of the top plate, one end of the first chain is fixedly connected to the first connecting member located on the left side of the first lead plate layer, and one end of the second chain is fixedly connected to the first connecting member located on the right side of the first lead plate layer.

[0009] As a preferred technical solution of the present invention, the other end of the first chain is fixedly connected to a counterweight block, and the other end of the second chain is fixedly connected to the top outer wall of the counterweight block.

[0010] As a preferred technical solution of the present invention, a second guide rail is fixedly installed inside the outer shell, and there are two second guide rails. The two second guide rails are respectively located on the front and rear sides of the counterweight block. The outer wall of the second guide rail is slidably connected with a second guide mechanism, and the outer wall of the second guide mechanism is fixedly connected to the side wall of the counterweight block.

[0011] As a preferred technical solution of the present invention, a first guide rail is fixedly installed inside the shell, and there are two first guide rails. The two first guide rails are respectively located on the left and right sides of the radiation protection door. The outer walls of the first guide rails are slidably connected with a first guide mechanism, and the outer walls of the first guide mechanism are fixedly connected to the side walls of the first lead plate layer.

[0012] As a preferred technical solution of the present invention, the first guide mechanism includes a first baffle, a guide wheel is fixedly installed on the outer wall of the first baffle, the first guide rail is in contact with the outer wall of the guide wheel, the other end of the guide wheel is rotatably connected to the second baffle, the first guide rail is located between the first baffle and the second baffle, and the first guide mechanism and the second guide mechanism have the same structure.

[0013] As a preferred technical solution of the present invention, a first proximity switch is fixedly installed on the top inner wall of the shell, and a second proximity switch is fixedly installed on the bottom inner wall of the shell. The first proximity switch and the second proximity switch are both located on the right side of the counterweight.

[0014] As a preferred technical solution of the present invention, the inner wall of the chassis is fixedly installed with a first partition, a second partition, and a third partition, the second partition is located between the third partition and the first partition, the upper surface of the first partition is fixedly installed with an electromagnet, the inner wall of the chassis is fixedly installed with a reducer, the first proximity switch and the second proximity switch are both electrically connected to the reducer, the output end of the reducer is fixedly connected with a first output shaft, the other end of the first output shaft is fixedly connected with a fourth block, the bottom end of the adjusting rod is fixedly connected with a third block, the third block is located directly above the fourth block and corresponds to each other, the outer wall of the adjusting rod is fixedly connected with a connecting block through a bearing, the lower surface of the connecting block is installed with a magnetic block, the upper surface of the connecting block is fixedly connected with a connecting rod, and the outer wall of the connecting rod is sleeved with a spring.

[0015] As a preferred technical solution of the present invention, the top end of the second output shaft is rotatably connected to the outer wall of the third partition, the bottom end of the second transmission shaft is rotatably connected to the upper surface of the second partition, the electromagnet and the magnetic block correspond to each other, the corresponding surface magnetic poles of the electromagnet and the magnetic block are the same, the first partition and the second partition are not magnetically conductive, the other end of the connecting rod passes through and extends to the upper surface of the second partition, the spring is located above the second partition, one end of the worm passes through and extends to the outside of the chassis, and the extended end of the worm is fixedly sleeved with a turning handle.

[0016] The beneficial effects of the present invention are:

[0017] 1. In the present invention, compared with the traditional sliding protection door, the traditional sliding protection door is provided with a track groove at the bottom, which easily forms obstacles or inconveniences for pedestrians and vehicles entering and exiting, while the radiation protection door adopts a lifting design, which avoids the formation of track grooves and makes it more convenient for pedestrians or objects to pass through.

[0018] 2. In the present invention, a combination of a chain and a sprocket is used to lift the radiation protection door. Compared with a lead screw, the chain and the sprocket are more durable, have a longer service life, are easier to replace, repair and maintain, and can be used in complex environments.

[0019] 3. In the present invention, when a circuit failure or power outage occurs, under the action of the spring, the spring drives the connecting block to move upward through the connecting rod, and the connecting block drives the second block to move upward through the adjusting rod, the second block engages with the first block, and the fourth block separates from the third block. The worm is rotated by the turning handle outside the chassis, the worm drives the second output shaft to rotate through the worm gear, the second output shaft drives the first block to rotate, the first block drives the adjusting rod to rotate through the second block, the adjusting rod drives the second transmission shaft to rotate through the gear, the second transmission shaft drives the first transmission shaft to rotate through the bevel gear, the first transmission shaft drives the first rotating shaft to rotate through the bevel gear, the first rotating shaft drives the first sprocket to rotate, the first sprocket drives the second rotating shaft to rotate through the first chain, and the second rotating shaft drives the second sprocket to rotate, thereby realizing the opening and closing of the radiation protection door and improving the scope of application.

[0020] 4. In the present invention, the design of the counterweight block can reduce the torque required for the first rotating shaft and the second rotating shaft to rotate, and the reducer stops working when the counterweight block approaches the first proximity switch or the second proximity switch.

[0021] 5. In the present invention, when the radiation protection door and the counterweight block move up and down, the radiation protection door and the counterweight block are easily shaken when they move because the chain is used to drive the radiation protection door and the counterweight block to move. Through the design of the first guide mechanism, the first guide rail, the second guide mechanism, and the second guide rail, the first guide mechanism can slide along the first guide rail, and the second guide mechanism can slide along the second guide rail, so that the radiation protection door and the counterweight block are more stable when they move.

[0022] 6. In the present invention, the reducer is composed of a motor and a worm gear reducer. The worm gear reducer has a reverse self-locking function. At the same time, when operated manually, the self-locking property of the worm gear is utilized to realize reverse self-locking. Only the worm gear can drive the worm wheel, but the worm wheel cannot drive the worm gear. This avoids the situation where the first rotating shaft and the second rotating shaft are rotated under force, improves the stability of the radiation protection door, prevents the radiation protection door from falling when it is opened, and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a novel chain-lifting driven radiation protection door of the present invention.

[0024] Figure 2 The present invention is a top view of a first rotating shaft, a first sprocket, a first chain, and a second rotating shaft of a novel chain lifting and driving radiation protection door.

[0025] Figure 3 The present invention is a structural schematic diagram of a first clamping block, a second clamping block and an adjusting rod for driving a radiation protection door by a novel chain lifting.

[0026] Figure 4 A novel chain lifting drive radiation protection door of the present invention Figure 3 Schematic diagram of the local structure at point A in the middle.

[0027] Figure 5 This is a schematic structural diagram of a second output shaft and a worm gear for driving a radiation protection door by a novel chain lifting method of the present invention.

[0028] Figure 6 This is a schematic structural diagram of a radiation protection door that is a novel chain-driven radiation protection door of the present invention.

[0029] Figure 7 This is a structural schematic diagram of the first lead plate layer, the first protective shell, the second lead plate layer, the second protective shell, and the third lead plate layer of a new chain-lifting driven radiation protection door of the present invention; at this time, the radiation protection door is in a closed state.

[0030] Figure 8 This is a structural schematic diagram of the first lead plate layer, the first protective shell, the second lead plate layer, the second protective shell, and the third lead plate layer of a new type of chain lifting and driving radiation protection door of the present invention; at this time, the radiation protection door is in an open state.

[0031] Fig. 9 This is a schematic structural diagram of a novel chain-driven counterweight block for lifting a radiation protection door according to the present invention.

[0032] Fig.10 This is a schematic structural diagram of a first guide mechanism for a novel chain-driven radiation protection door according to the present invention.

[0033] Fig.11 This is a front view of a novel chain-lifting driven radiation protection door of the present invention.

[0034] Numbers in the figure: 1, shell; 2, radiation protection door; 201, first lead plate layer; 202, first protective shell; 203, second lead plate layer; 204, second protective shell; 205, third lead plate layer; 206, buffer spring; 207, first connecting piece; 208, second connecting piece; 209, third connecting piece; 3, top plate; 4, chassis; 5, first shaft; 6, first sprocket; 7, first chain; 8, second shaft; 9, second chain; 10, second sprocket; 11, first transmission shaft; 12, second transmission shaft; 13, first clamping block; 14, second clamping block; 15, adjustment rod; 16, third The clamping block; 17, the first output shaft; 18, the fourth clamping block; 19, the first partition; 20, the second partition; 21, the third partition; 22, the electromagnet; 23, the reducer; 24, the connecting block; 25, the magnetic block; 26, the connecting rod; 27, the spring; 28, the second output shaft; 29, the worm; 30, the first iron chain; 31, the first guide mechanism; 3101, the first baffle; 3102, the guide wheel; 3103, the second baffle; 32, the first guide rail; 33, the counterweight; 34, the second guide mechanism; 35, the second guide rail; 36, the first proximity switch; 37, the second proximity switch; 38, the second iron chain. DETAILED DESCRIPTION

[0035] 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.

[0036] Example:

[0037] As attached Figure 1 To Attachment Fig.11 As shown:

[0038] A novel chain-lifting driven radiation protection door comprises a shell 1, a radiation protection door 2 is arranged on the inner side of the shell 1, a chassis 4 is fixedly connected to the left side of the shell 1, a top plate 3 is fixedly installed on the upper inner wall of the shell 1, a first rotating shaft 5 is rotatably installed on the upper surface of one side of the top plate 3, a second rotating shaft 8 is rotatably installed on the upper surface of the other side of the top plate 3, a first sprocket 6 is fixedly sleeved on the outer wall of the first rotating shaft 5 and the second rotating shaft 8, a first chain 7 is sleeved on the outer wall of the first sprocket 6, and a second sprocket 10 is fixedly sleeved on the outer wall of the second rotating shaft 8 The outer wall of the second sprocket 10 is sleeved with the second chain 9, the first rotating shaft 5 is connected to the first transmission shaft 11 through a bevel gear transmission, the first transmission shaft 11 is connected to the second transmission shaft 12 through a bevel gear transmission, the second transmission shaft 12 is connected to the adjusting rod 15 through a gear transmission, the top of the adjusting rod 15 is fixedly connected to the second clamping block 14, the upper surface of the second clamping block 14 is meshed with the first clamping block 13, the other side of the first clamping block 13 is fixedly connected to the second output shaft 28, and the second output shaft 28 is connected to the worm 29 through a worm gear transmission.

[0039] in:

[0040] a. The radiation protection door 2 includes a first lead plate layer 201, a first protective shell 202 is fixedly connected to an outer wall of one side of the first lead plate layer 201, a second lead plate layer 203 and a second protective shell 204 are sleeved inside the first protective shell 202, the second protective shell 204 is fixedly connected to the side wall of the second lead plate layer 203, a third lead plate layer 205 is sleeved inside the second protective shell 204, buffer springs 206 are provided on the bottom inner walls of the first protective shell 202 and the second protective shell 204, first connecting pieces 207 are fixedly connected to both sides of the top of the first lead plate layer 201, second connecting pieces 208 are fixedly connected to both sides of the top of the second lead plate layer 203, and third connecting pieces 209 are fixedly connected to both sides of the top of the third lead plate layer 205.

[0041] b. The upper surfaces of the two third connecting members 209 are fixedly connected with the first iron chain 30, and the other end of the first iron chain 30 is fixedly connected to the lower surface of the top plate 3. The upper surfaces of the two third connecting members 209 are fixedly connected with the second iron chain 38, and the other end of the second iron chain 38 is fixedly connected to the lower surface of the top plate 3. One end of the first chain 7 is fixedly connected to the first connecting member 207 located on the left side of the first lead plate layer 201, and one end of the second chain 9 is fixedly connected to the first connecting member 207 located on the right side of the first lead plate layer 201.

[0042] c. The other end of the first chain 7 is fixedly connected to the counterweight 33 , and the other end of the second chain 9 is fixedly connected to the top outer wall of the counterweight 33 .

[0043] d. A second guide rail 35 is fixedly installed inside the outer shell 1. There are two second guide rails 35, which are respectively located on the front and rear sides of the counterweight block 33. The outer wall of the second guide rail 35 is slidably connected to a second guide mechanism 34, and the outer wall of the second guide mechanism 34 is fixedly connected to the side wall of the counterweight block 33.

[0044] in:

[0045] e. A first guide rail 32 is fixedly installed inside the outer shell 1. There are two first guide rails 32. The two first guide rails 32 are respectively located on the left and right sides of the radiation protection door 2. The outer walls of the first guide rails 32 are slidably connected to the first guide mechanism 31. The outer walls of the first guide mechanism 31 are fixedly connected to the side walls of the first lead plate layer 201.

[0046] f. The first guide mechanism 31 includes a first baffle 3101, a guide wheel 3102 is fixedly installed on the outer wall of the first baffle 3101, the first guide rail 32 is in contact with the outer wall of the guide wheel 3102, the other end of the guide wheel 3102 is rotatably connected to the second baffle 3103, the first guide rail 32 is located between the first baffle 3101 and the second baffle 3103, and the first guide mechanism 31 and the second guide mechanism 34 have the same structure.

[0047] g. A first proximity switch 36 is fixedly mounted on the top inner wall of the housing 1 , and a second proximity switch 37 is fixedly mounted on the bottom inner wall of the housing 1 . Both the first proximity switch 36 and the second proximity switch 37 are located on the right side of the counterweight 33 .

[0048] h. The inner wall of the chassis 4 is fixedly installed with a first partition 19, a second partition 20, and a third partition 21. The second partition 20 is located between the third partition 21 and the first partition 19. An electromagnet 22 is fixedly installed on the upper surface of the first partition 19. A reducer 23 is fixedly installed on the inner wall of the chassis 4. The reducer 23 is composed of a motor and a worm gear reducer. The worm gear reducer has a reverse self-locking function, which avoids the situation where the first rotating shaft 5 and the second rotating shaft 8 are rotated under force, thereby improving the stability of the radiation protection door 2. The first proximity switch 36 and the second proximity switch The switches 37 are all electrically connected to the reducer 23. The output end of the reducer 23 is fixedly connected to the first output shaft 17, and the other end of the first output shaft 17 is fixedly connected to the fourth clamping block 18. The bottom end of the adjusting rod 15 is fixedly connected to the third clamping block 16, and the third clamping block 16 is located directly above the fourth clamping block 18 and corresponds to each other. The outer wall of the adjusting rod 15 is fixedly connected to the connecting block 24 through a bearing, and a magnetic block 25 is installed on the lower surface of the connecting block 24. The upper surface of the connecting block 24 is fixedly connected to the connecting rod 26, and the outer wall of the connecting rod 26 is sleeved with a spring 27.

[0049] i. The top end of the second output shaft 28 is rotatably connected to the outer wall of the third partition 21, the bottom end of the second transmission shaft 12 is rotatably connected to the upper surface of the second partition 20, the electromagnet 22 and the magnetic block 25 correspond to each other, the corresponding surface magnetic poles of the electromagnet 22 and the magnetic block 25 are the same, the first partition 19 and the second partition 20 are not magnetically conductive, the other end of the connecting rod 26 passes through and extends to the upper surface of the second partition 20, the spring 27 is located above the second partition 20, one end of the worm 29 passes through and extends to the outside of the chassis 4, and the extended end of the worm 29 is fixedly sleeved with a turning handle.

[0050] The specific usage and function of this embodiment are as follows:

[0051] When the present invention is used, the electromagnet 22 is started, the electromagnet 22 and the magnetic block 25 are attracted to each other, the reducer 23 drives the adjusting rod 15 to descend through the connecting block 24, the adjusting rod 15 drives the third clamping block 16 to descend, the third clamping block 16 and the fourth clamping block 18 are meshed with each other, the reducer 23 drives the first output shaft 17 to rotate, the first output shaft 17 drives the fourth clamping block 18 to rotate, the fourth clamping block 18 drives the adjusting rod 15 to rotate through the third clamping block 16, the adjusting rod 15 drives the second transmission shaft 12 to rotate through the gear, the second transmission shaft 12 drives the first transmission shaft 11 to rotate through the bevel gear, and the first transmission shaft 11 drives the first rotating shaft 5 to rotate through the bevel gear. The first rotating shaft 5 drives the first sprocket 6 to rotate, the first sprocket 6 drives the second rotating shaft 8 to rotate through the first chain 7, and the second rotating shaft 8 drives the second sprocket 10 to rotate. When the first rotating shaft 5 rotates counterclockwise, the first chain 7 and the second chain 9 drive the first connecting member 207 to move downward, and the first connecting member 207 drives the first lead plate layer 201 to move downward, and then the second lead plate layer 203 slides out of the interior of the first protective shell 202, and the third lead plate layer 205 slides out of the interior of the second protective shell 204. The radiation protection door 2 is closed at this time by the cooperation of the third lead plate layer 205, the second lead plate layer 203, and the first lead plate layer 201. Figure 7 shown);

[0052] When the first rotating shaft 5 rotates clockwise, the first connecting member 207 is driven to move upwards by the first chain 7 and the second chain 9, and the first connecting member 207 drives the first lead plate layer 201 to move upwards, the second lead plate layer 203 is received into the first protective shell 202, and the third lead plate layer 205 is received into the second protective shell 204. At the same time, the buffer spring 206 can play a buffering and shock absorbing role to prevent the second lead plate layer 203 and the third lead plate layer 205 from directly contacting the first protective shell 202 and the second protective shell 204. At this time, the radiation protection door 2 is opened (such as Figure 8 shown);

[0053] When the radiation protection door 2 descends, the second chain 9 and the first chain 7 drive the counterweight 33 to rise. The design of the counterweight 33 can reduce the torque required for the first rotating shaft 5 and the second rotating shaft 8 to rotate. At the same time, when the counterweight 33 approaches the first proximity switch 36 or the second proximity switch 37, the reducer 23 stops working.

[0054] When a circuit fails or a power outage occurs, under the action of the spring 27, the spring 27 drives the connecting block 24 to move upward through the connecting rod 26, and the connecting block 24 drives the second clamping block 14 to move upward through the adjusting rod 15, and the second clamping block 14 is meshed with the first clamping block 13, and the fourth clamping block 18 is separated from the third clamping block 16. The worm 29 is rotated by the turning handle outside the chassis 4, and the worm 29 drives the second output shaft 28 to rotate through the worm gear, and the second output shaft 28 drives the first clamping block 13 to rotate, and the first clamping block 13 drives the adjusting rod 15 to rotate through the second clamping block 14, and the adjusting rod 15 drives the second transmission shaft 12 to rotate through the gear, and the second transmission shaft 12 drives the first transmission shaft 11 to rotate through the bevel gear, and the first transmission shaft 11 drives the first rotating shaft 5 to rotate through the bevel gear, and the first rotating shaft 5 drives the first sprocket 6 to rotate, and the first sprocket 6 drives the second rotating shaft 8 to rotate through the first chain 7, and the second rotating shaft 8 drives the second sprocket 10 to rotate, so as to realize the opening and closing of the radiation protection door 2, and improve the scope of application;

[0055] At the same time, when the radiation protection door 2 and the counterweight 33 move up and down, since the radiation protection door 2 and the counterweight 33 are driven by a chain to move, the radiation protection door 2 and the counterweight 33 are easy to shake when moving. Through the design of the first guide mechanism 31, the first guide rail 32, the second guide mechanism 34, and the second guide rail 35, the first guide mechanism 31 can slide along the first guide rail 32, and the second guide mechanism 34 can slide along the second guide rail 35, so that the radiation protection door 2 and the counterweight 33 are more stable when moving;

[0056] For the above structure and process, please refer to Figure 1-11 .

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0059] 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 novel chain-lift driven radiation protection door, comprising a housing (1), characterized in that: A radiation protection door (2) is arranged on the inner side of the shell (1); the left side of the shell (1) is fixedly connected to a chassis (4); a top plate (3) is fixedly mounted on the upper inner wall of the shell (1); a first rotating shaft (5) is rotatably mounted on the upper surface of one side of the top plate (3); a second rotating shaft (8) is rotatably mounted on the upper surface of the other side of the top plate (3); first sprockets (6) are fixedly sleeved on the outer walls of the first rotating shaft (5) and the second rotating shaft (8); a first chain (7) is sleeved on the outer wall of the first sprocket (6); a second sprocket (10) is fixedly sleeved on the outer wall of the second rotating shaft (8); and the second sprocket (10) is fixedly sleeved on the outer wall of the second rotating shaft (8). ), the first rotating shaft (5) is connected to the first transmission shaft (11) through a bevel gear transmission, the first transmission shaft (11) is connected to the second transmission shaft (12) through a bevel gear transmission, the second transmission shaft (12) is connected to the adjusting rod (15) through a gear transmission, the top end of the adjusting rod (15) is fixedly connected to the second clamping block (14), the upper surface of the second clamping block (14) is meshed with the first clamping block (13), the other side of the first clamping block (13) is fixedly connected to the second output shaft (28), and the second output shaft (28) is connected to the worm (29) through a worm gear transmission; The other end of the first chain (7) is fixedly connected to a counterweight (33), and the other end of the second chain (9) is fixedly connected to a top outer wall of the counterweight (33); A first proximity switch (36) is fixedly mounted on the top inner wall of the housing (1), and a second proximity switch (37) is fixedly mounted on the bottom inner wall of the housing (1), wherein the first proximity switch (36) and the second proximity switch (37) are both located on the right side of the counterweight (33); A first partition (19), a second partition (20), and a third partition (21) are fixedly mounted on the left inner wall of the chassis (4); the second partition (20) is located between the third partition (21) and the first partition (19); an electromagnet (22) is fixedly mounted on the upper surface of the first partition (19); a reducer (23) is fixedly mounted on the inner wall of the chassis (4); the first proximity switch (36) and the second proximity switch (37) are both electrically connected to the reducer (23); and the output end of the reducer (23) is fixedly connected to the first output shaft (1 7), the other end of the first output shaft (17) is fixedly connected to a fourth clamping block (18), the bottom end of the adjusting rod (15) is fixedly connected to a third clamping block (16), the third clamping block (16) is located directly above the fourth clamping block (18) and corresponds to each other, the outer wall of the adjusting rod (15) is fixedly connected to a connecting block (24) via a bearing, a magnetic block (25) is mounted on the lower surface of the connecting block (24), a connecting rod (26) is fixedly connected to the upper surface of the connecting block (24), and a spring (27) is sleeved on the outer wall of the connecting rod (26); The top end of the second output shaft (28) is rotatably connected to the outer wall of the third partition (21), the bottom end of the second transmission shaft (12) is rotatably connected to the upper surface of the second partition (20), the electromagnet (22) and the magnetic block (25) correspond to each other, the corresponding surface magnetic poles of the electromagnet (22) and the magnetic block (25) are the same, the first partition (19) and the second partition (20) are not magnetically conductive, the other end of the connecting rod (26) passes through and extends to the upper surface of the second partition (20), the spring (27) is located above the second partition (20), one end of the worm (29) passes through and extends to the outside of the chassis (4), and the extended end of the worm (29) is fixedly sleeved with a turning handle.

2. A novel chain-lifting driven radiation protection door according to claim 1, characterized in that: The radiation protection door (2) comprises a first lead sheet layer (201), a first protective shell (202) is fixedly connected to an outer wall of one side of the first lead sheet layer (201), a second lead sheet layer (203) and a second protective shell (204) are sleeved inside the first protective shell (202), the second protective shell (204) is fixedly connected to the side wall of the second lead sheet layer (203), a third lead sheet layer (205) is sleeved inside the second protective shell (204), buffer springs (206) are provided on the bottom inner walls of the first protective shell (202) and the second protective shell (204), first connecting pieces (207) are fixedly connected to both sides of the top of the first lead sheet layer (201), second connecting pieces (208) are fixedly connected to both sides of the top of the second lead sheet layer (203), and third connecting pieces (209) are fixedly connected to both sides of the top of the third lead sheet layer (205).

3. A novel chain-lifting driven radiation protection door according to claim 2, characterized in that: The upper surfaces of the two third connecting members (209) are fixedly connected to a first iron chain (30), the other end of the first iron chain (30) is fixedly connected to the lower surface of the top plate (3), the upper surfaces of the two third connecting members (209) are fixedly connected to a second iron chain (38), the other end of the second iron chain (38) is fixedly connected to the lower surface of the top plate (3), one end of the first chain (7) is fixedly connected to a first connecting member (207) located on the left side of the first lead plate layer (201), and one end of the second chain (9) is fixedly connected to the first connecting member (207) located on the right side of the first lead plate layer (201).

4. A novel chain-lifting driven radiation protection door according to claim 3, characterized in that: A second guide rail (35) is fixedly installed inside the housing (1), and there are two second guide rails (35). The two second guide rails (35) are respectively located at the front and rear sides of the counterweight (33), and the outer wall of the second guide rail (35) is slidably connected to a second guide mechanism (34), and the outer wall of the second guide mechanism (34) is fixedly connected to the side wall of the counterweight (33).

5. A novel chain-lifting driven radiation protection door according to claim 4, characterized in that: A first guide rail (32) is fixedly installed inside the housing (1), there are two first guide rails (32), the two first guide rails (32) are respectively located on the left and right sides of the radiation protection door (2), the outer walls of the first guide rails (32) are slidably connected to the first guide mechanism (31), and the outer wall of the first guide mechanism (31) is fixedly connected to the side wall of the first lead plate layer (201).

6. A novel chain-lifting driven radiation protection door according to claim 5, characterized in that: The first guide mechanism (31) comprises a first baffle (3101), a guide wheel (3102) being fixedly mounted on the outer wall of the first baffle (3101), the first guide rail (32) being in contact with the outer wall of the guide wheel (3102), the other end of the guide wheel (3102) being rotatably connected to the second baffle (3103), the first guide rail (32) being located between the first baffle (3101) and the second baffle (3103), and the first guide mechanism (31) and the second guide mechanism (34) having the same structure.

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