Shielding protective door with automatic lifting threshold and preparation method of shielding protective door

Abstract

The invention belongs to the technical field of ray protection doors, and particularly relates to a shielding protection door with an automatic lifting doorsill and a manufacturing method thereof.The protection door comprises a door frame and a door leaf, the doorsill is arranged in the bottom of the door frame, a lead plate is arranged in the doorsill, a lifting device is arranged in the doorsill and connected with the bottom of the door frame, and a control device is arranged in the side edge of the door frame; the lifting device is connected with the control device; the control device comprises a moving part, an elastic part and a touch rod, the moving part is connected with the touch rod and the pull connecting rod, the elastic part and the touch rod penetrate out of the side edge of the door frame, the elastic part is connected with the bottom of the door frame, the threshold is higher than a gap between the bottom of the door frame and the door leaf, and the depth of a groove in the bottom of the door frame is larger than or equal to that of the threshold. According to the protective door, lifting of the threshold can be automatically controlled through opening and closing of the door leaf, rays are shielded, the cost is reduced, the manufacturing method of the protective door is simple in process and easy to operate, the cost is effectively reduced, and industrial production is facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of radiation protection doors, and particularly relates to a shielding protection door with an automatically lifting threshold and a preparation method thereof. Background Art

[0002] Radiation protection doors are quite important in modern medical equipment rooms and other important door rooms. They have the functions of radiation prevention, ray prevention, protecting high-radiation facilities, and protecting the surrounding people from radiation. Among them, lead material is the main material for making radiation protection doors. Radiation protection doors are usually also called lead doors. The protection material uses high-purity lead plates, and the bonding process is very strict during processing. It has the advantages of no ray leakage, easy to use, beautiful and generous, and good protection effect. Lead doors are mainly used at the entrances and exits that need to block the passage of rays, and are mainly used in hospitals, computer rooms, mining areas, hospital CT rooms, X-ray rooms, operating rooms, flaw detection rooms, etc.

[0003] Currently, conventional radiation protection doors mainly consist of a door leaf and a door frame. There is a large gap between the bottom ends of the door leaf and the door frame, and radiation is likely to overflow from the gap, posing a risk of radiation leakage. In the prior art, in order to solve the above problems, side-opening doors often design a lifting mechanism in the threshold to achieve sealing, prevent radiation from overflowing, and reduce the risk of radiation leakage. For example, a movable threshold protection and airtight door disclosed in Patent 201821090964X and a civil air defense door for radiation protection disclosed in Patent 2020221779488 can solve the problem of radiation overflow, but both of them require manual control of the lifting of the lifting structure and cannot lift automatically, resulting in the possibility of personnel forgetting to operate, which may lead to radiation overflow or passage obstruction. Moreover, in some emergency situations, major safety accidents may occur. At the same time, manual operation will cause a burden on the staff. If someone is specifically hired to control, it will lead to waste of resources such as medical resources, increasing costs. At the same time, the existing preparation methods for side-opening protection doors are complex and cumbersome, with high costs in terms of resources, labor, and time, which is not conducive to industrial production. Summary of the Invention

[0004] In order to solve the above problems, the present invention proposes a shielding protection door with an automatically lifting threshold and a preparation method thereof. The protection door can automatically control the lifting of the threshold through the opening and closing of the door leaf, block rays, has good radiation protection performance, does not require manual operation, reduces costs, and the preparation method of the protection door is simple in process, easy to operate, easy to install, disassemble and repair, effectively reducing costs and being conducive to industrial production.

[0005] The technical solution of the present invention is as follows: A shielding protection door with an automatically lifting threshold, including a door frame and a door leaf. A threshold is arranged in a groove at the bottom of the door frame. The bottom of the door frame is flush with the ground. A lead plate is arranged in the threshold, and a lifting device is arranged in the threshold. There is a gap between the lead plate and the lifting device; The lifting device is connected to the groove at the bottom of the door frame, and a control device is arranged inside the side of the door frame. The lifting device is connected to the control device by pulling a connecting rod; The control device includes a moving part, an elastic part and a touch rod. One end of the moving part passes through a reserved opening at the bottom of the door frame and is connected to the pulling connecting rod. The other end of the moving part is connected to the touch rod, and the touch rod passes through the side of the door frame; An elastic part is connected to the side of the moving part away from the touch rod, and the elastic part is connected to the bottom of the door frame; The height of the threshold > the gap between the bottom of the door frame and the door leaf, the depth of the groove at the bottom of the door frame ≥ the height of the threshold, and the length of the threshold ≤ the minimum distance between the two side edges of the door frame. When the distances are equal, it is more conducive to shielding and blocking rays. When the length of the threshold is slightly smaller, it is more conducive to installation and lifting operation; Lead plates are arranged on both inner walls of the threshold; The touch rod is arranged on the side of the door frame close to the opening side, and the threshold is arranged on the bottom of the door frame close to the non-opening side; When the door leaf is opened, the top of the threshold is flush with the top surface of the bottom of the threshold. When the door leaf is closed, the threshold rises to block the gap between the bottom of the door frame and the door leaf.

[0006] Preferably, the lifting device includes plates, a rotating shaft, a central rotating shaft and cross support rods. The upper and lower plates are arranged in parallel, and the lower plate is connected to the groove at the bottom of the door frame; Cross support rods are arranged between the two plates, and cross support rods are correspondingly arranged on both sides of the two plates. The intersection points of the two cross support rods are connected by a central rotating shaft, and the ends of the two cross support rods are movably connected to the plates through rotating shafts; Guide grooves are respectively arranged at both ends of the rotating shafts on one side of the central rotating shaft. The guide grooves are arranged on the side walls of the plates, and one end of the rotating shaft connected to the pulling connecting rod is arranged in the groove at the bottom of the door frame, and the pulling connecting rod is arranged in the groove at the bottom of the door frame.

[0007] Further preferably, at least two central rotating shafts are arranged between the two plates; The rotating shafts in the guide grooves near the adjacent central rotating shafts are connected by transmission rods, and the rotating shafts connected by the transmission rods are arranged in the guide grooves on the side walls of the lower plate; By setting the structure of at least two central rotating shafts and cross support rods, it is conducive to the stable and long-term operation of lifting. Even if one set of structures has problems, the threshold can still be lifted and lowered normally by removing or installing new structures after removal.

[0008] Further preferably, the guide groove is arranged on the side of the central rotating shaft away from the moving part.

[0009] Preferably, the elastic part includes a spring, a fixing part and a guide rod; The guide rod passes through the fixing part and the spring and is connected to the moving part. The fixing part is connected to the bottom of the door frame. There are gaps between the moving part and the side and the bottom of the door frame, which is convenient for the movement of the moving part; The fixing part and the guide rod mainly play the role of fixing and guiding the spring.

[0010] Further preferably, the elastic member further includes a thickening member, a bearing flange connecting seat, and a support guiding member. The bearing flange connecting seat is arranged on the fixing member, the guiding rod is arranged in the bearing flange connecting seat, a thickening member is arranged between the guiding rod and the moving member, the thickening member is connected to both the guiding rod and the moving member, and the spring is arranged on the guiding rod between the bearing flange connecting seat and the thickening member; at least two guiding rods are arranged; a support guiding member is arranged between the moving member and the side of the door frame, a bushing is arranged on the support guiding member, a touch rod is arranged in the bushing, and the support guiding member is connected to the bottom of the door frame; the thickening member facilitates the transmission of force and the stability of the structure. The bearing flange connecting seat not only facilitates the movement of the guiding rod but also provides a supporting function; the arrangement of the support guiding member and the bushing mainly facilitates the movement of the touch rod and simultaneously plays a role in support and guidance.

[0011] Preferably, a settlement housing is arranged in the groove at the bottom of the door frame. A threshold and a lifting device are arranged in the settlement housing. The bottom of the settlement housing is connected to the lower plate, the settlement housing is connected to the bottom of the door frame, and the height of the settlement housing is the same as the depth of the groove. One end of the pulling link is arranged in the settlement housing, and the other end is arranged in the groove at the bottom of the door frame; the arrangement of the settlement housing enables sundries to fall into the gap, which is convenient for taking out; it is also convenient to judge and repair in time when problems occur during the lifting of the threshold.

[0012] Further preferably, the threshold is of a groove-like structure. The upper plate is connected to the threshold, the length of the plate < the length of the threshold, and there is a gap between the threshold and the settlement housing; a lead plate is arranged on the inner side wall of the threshold, and the height of the lead plate ≥ the gap between the bottom of the door frame and the door leaf.

[0013] Further preferably, extension blocks are respectively arranged at both ends of the lower plate, and stabilizing members are arranged on the extension blocks. The stabilizing members, the extension blocks, and the settlement housing are connected by screws. The arrangement of the extension blocks and the stabilizing members plays a role in stabilizing the plate, preventing deformation, and at the same time facilitating the connection between the plate and the settlement housing.

[0014] Preferably, clamping members are arranged at the ends of the rotating shaft and the central rotating shaft. The threshold is arranged on the non-opening side of the bottom of the door frame, and the touch connecting rod is arranged on the opening side of the side of the door frame.

[0015] A preparation method for a shielding and protective door with an automatically lifting threshold is as follows:

[0016] (1) First, mill a groove on the side of the door frame, mill a reserved hole at a position near the opening side on the side of the door frame, mill a groove at a position near the opening side at the bottom of the door frame, and mill a reserved opening at a position corresponding to the groove on the side of the door frame and near the non-opening side at the bottom of the door frame;

[0017] (2) Install the control device in the slot on the side of the door frame and connect it to the bottom of the door frame. Install the touch rod of the control device in the reserved hole. One end of the moving part in the control device passes through the reserved opening and is installed in the groove at the bottom of the door frame. Install the settlement housing in the groove at the bottom of the door frame, then install the lifting device in the settlement housing, and install the pulling connecting rod in the groove and the settlement housing. Connect the moving part in the control device and the rotating shaft of the lifting device through the pulling connecting rod;

[0018] (3) Install lead plates on the inner side wall of the threshold and install the threshold on the lifting device:

[0019] (4) After the door frame is installed, connect the door frame and the door leaf with connectors. The connectors are installed at positions close to the reserved holes.

[0020] The shielding protection door with an automatically lifting threshold adopted in the present invention is provided with lead plates in the threshold, and the threshold is used to block and shield rays; specifically, when the door leaf is opened and closed, when the door leaf is closed, it squeezes the touch rod, and the touch rod moves away from the door leaf, thereby squeezing the spring. The spring generates elastic force, and the touch rod drives the moving part and the pulling connecting rod to move, so that the rotating shaft moves from one end of the guiding groove away from the moving part to the other end of the guiding groove, and the distance between the upper and lower plates becomes larger, and the threshold rises to block the gap between the bottom of the door frame and the door leaf, thereby realizing the blocking and shielding of rays; when the door leaf is opened, the door leaf no longer squeezes the touch rod. On the one hand, the moving part is subjected to the elastic force of the spring, and on the other hand, the moving part is subjected to the pulling force of the pulling connecting rod. This pulling force is generated by the gravity of the threshold, the lead plate and the upper plate, etc., which causes the pulling connecting rod to move in a direction away from the moving part. Due to the combined action of the pulling force and the elastic force, the moving part drives the touch rod to move towards the door leaf until the touch rod returns to its original state, the spring returns to its original state, and the rotating shaft also returns to its original position from the other end of the guiding groove, and the distance between the upper and lower plates becomes smaller, and the threshold descends. At this time, the top of the threshold is flush with the top surface of the bottom of the door frame; the spring can not only play the above role, but also play a buffering role, so that the transfer of the rotating shaft from one end of the guiding groove to the other end is relatively gentle, preventing hard contact and wear between the rotating shaft and the guiding groove. When the touch rod returns to its original state, the spring changes from being squeezed to returning to its natural state, and then to being stretched, which also plays a buffering role for the touch rod, thereby buffering the return of the rotating shaft from the guiding groove to its original position, avoiding hard contact and reducing wear. Similarly, when the touch rod is squeezed, the rotating shaft moves from one end of the guiding groove to the other end, and the spring also plays a buffering role; by opening and closing the door leaf, the lifting of the threshold is automatically controlled. When the threshold is at the lowest point, the top is flush with the ground, which makes it convenient for people, vehicles and objects to pass. After the threshold rises, the threshold can block and shield the rays overflowing between the door leaf and the bottom of the door frame, avoiding radiation overflow.

[0021] An automatic lifting threshold shielding protection door provided by the present invention and a preparation method thereof. Through the cooperation of a control device and a lifting device, the automatic lifting of the threshold can be realized by using the opening and closing of the door leaf. When the door leaf is in the open state, the threshold is flush with the ground, which is beneficial to passage. When the door leaf is in the closed state, the threshold rises to block and shield rays, avoiding radiation leakage. The overall structure formed by the combination of devices such as the lifting device and the control device in the protection door is stable and not prone to failure. Once a failure occurs, it is convenient to find problems and facilitate disassembly, repair, and installation. The automatic lifting of the threshold does not require manual operation, reducing manpower, material resources, and costs. Moreover, the preparation method of the protection door has simple technology, is easy to operate, install, disassemble, and repair, effectively reducing costs and being conducive to industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the door frame of the present invention;

[0023] Figure 2 is a schematic structural diagram of the control device and the lifting device of the present invention;

[0024] Figure 3 is Figure 2 a front structural diagram of;

[0025] Figure 4 is a schematic structural diagram of the cross support rod of the present invention;

[0026] Figure 5 is a schematic structural diagram of the settlement housing and the pulling link of the present invention;

[0027] Figure 6 is a schematic structural diagram of the settlement housing and the threshold of the present invention;

[0028] Figure 7 is Figure 1 a horizontal sectional structural diagram of;

[0029] Figure 8 is a top view of the bottom of the door frame of the present invention;

[0030] In the figure, 1 is a plate, 1-1 is the upper plate, 1-2 is the lower plate, 2 is a rotating shaft, 3 is an extension block, 4 is a guide groove, 5 is a cross support rod, 6 is a clamping part, 7 is a pulling connecting rod, 8 is a touch rod, 9 is a support guide part, 10 is a moving part, 11 is a spring, 12 is a bearing flange connecting seat, 13 is a fixing part, 14 is a guide rod, 15 is a thickening part, 16 is a transmission rod, 17 is a groove, 18 is a central rotating shaft, 19 is a shaft sleeve, 20 is a settlement housing, 21 is a threshold, 22 is a lead plate, 23 is a door frame, 23-1 is the side of the door frame, 23-2 is the bottom of the door frame, 24 is a connecting part, 25 is the non-opening side, 26 is the opening side, 27 is a stabilizing part, 28 is a reserved opening. Detailed implementation manners

[0031] The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection claimed by the present application.

[0032] As Figure 1-8As shown in the figure, a shielding protection door with an automatically lifting threshold includes a door frame 23 and a door leaf. The side of the door frame 23 and the door leaf is connected by a connecting member 24. This protection door is a side-opening door. A threshold 21 is arranged in the groove 17 at the bottom 23-2 of the door frame. The top surface of the bottom 23-2 of the door frame is flush with the ground. A lead plate 22 is arranged in the threshold 21. A lifting device is arranged in the threshold 21. There is a gap between the lead plate 22 and the lifting device. The lifting device is connected to the bottom of the groove 17 at the bottom 23-2 of the door frame. A control device is arranged in the groove in the side 23-1 of the door frame. The lifting device is connected to the control device through a pulling connecting rod 7; the control device includes a moving member 10, an elastic member and a touch rod 8. One end of the moving member 10 passes through the reserved opening 28 at the bottom 23-2 of the door frame and is connected to the pulling connecting rod 7 by other existing connection methods such as screws. The moving member 10 can move left and right in the horizontal direction in the reserved opening 28, so as to realize the lifting of the threshold. The other end of the moving member 10 is connected to the touch rod 8. The moving member 10 and the touch rod 8 can be connected by other connection methods such as clamping, threaded connection, welding, bonding, etc. The touch rod 8 passes through the side 23-1 of the door frame (the touch rod 8 passes through the side 23-1 of the door frame and contacts the door leaf). The touch rod 8 is arranged in the reserved hole in the side 23-1 of the door frame; on the side of the moving member 10 away from the touch rod 8, an elastic member is connected. The elastic member is connected to the bottom 23-2 of the door frame; the height of the threshold 21 > the size (width) of the gap between the bottom 23-2 of the door frame and the door leaf. The depth of the groove 17 at the bottom 23-2 of the door frame ≥ the height of the threshold 21. The depth of the groove 17 at the bottom 23-2 of the door frame is equal to the distance from the top of the threshold 21 (the state of the threshold 21 when the door leaf is opened) to the bottom of the groove 17. The height of the threshold 21 is set so that when the threshold 21 rises, it can effectively block and shield the rays between the bottom 23-2 of the door frame and the door leaf. After the threshold 21 descends, the threshold 21 is arranged in the groove 17, and the threshold 21 is flush with the bottom 23-2 of the door frame, which is convenient for passage; the length of the threshold 21 ≤ the minimum distance between the two sides of the door frame 23 (that is, the distance between the non-opening sides of the two side 23-1 of the door frame). When the distances are equal, it is more conducive to blocking and shielding the rays. When the length of the threshold 21 is slightly smaller, it is more conducive to the installation and lifting operation; the touch rod 8 is arranged on the side 23-1 of the door frame close to the opening side 23, and the threshold 21 is arranged on the bottom 23-2 of the door frame close to the non-opening side 25.

[0033] In another embodiment, the lifting device includes a plate 1, a rotating shaft 2, a central rotating shaft 18 and a cross support rod 5. The upper and lower plates 1 are arranged in parallel. The lower plate 1-2 is connected to the groove 17 at the bottom of the door frame 23-2 by screws. A cross support rod 5 is arranged between the two plates 1. Cross support rods 5 are correspondingly arranged on both sides of the two plates 1. The intersection points of the two cross support rods 5 are connected by a central rotating shaft 18. The two ends of the central rotating shaft 18 pass through the intersection points of the cross support rods 4, and a clamping member 6 is arranged at the end. The ends of the two cross support rods 5 are movably connected to the plate 1 through a rotating shaft 2. The two ends of the rotating shaft 2 pass through the ends of the cross support rod 5 and the side wall of the plate 1, and a clamping member 6 is arranged at its end to prevent the rotating shaft 2, the cross support rod 5 and the plate 1 from being disconnected. The two ends of the rotating shaft 2 distributed on one side of the central rotating shaft 18 are respectively arranged in the guide grooves 4. The guide grooves 4 are arranged on the side wall of the plate 1, and the rotating shaft 2 (i.e., the rotating shaft in the guide groove 4) is connected to one end of a pulling link 7. The rotating shaft 2 passes through the pulling link 7 to achieve a movable connection. The pulling link 7 is arranged in the groove 17 at the bottom of the door frame 23-2.

[0034] In another embodiment, at least two central rotating shafts 18 are arranged between the two plates 1. Each central rotating shaft 18 is provided with a set of cross support rods 5 and four rotating shafts 2. The rotating shafts 2 in the guide grooves 4 near the adjacent central rotating shafts 18 are connected by a transmission rod 16. The rotating shafts 2 connected by the transmission rod 16 are arranged in the guide grooves 4 on the side wall of the lower plate 1-2, and this rotating shaft is also connected to the pulling link 7, that is, one end of the pulling link 7 and one end of the transmission rod 16 are both connected to the same rotating shaft 2. The guide groove 4 is arranged on the side of the central rotating shaft 18 away from the moving member 10. Even if a problem occurs in one set of structures, the threshold 21 can be lifted and lowered normally by removing or installing a new structure after removal.

[0035] In another embodiment, the elastic member includes a spring 11, a fixing member 13, and a guide rod 14. The guide rod 14 passes through the fixing member 13 and the spring 11 to connect the moving member 10. The fixing member 13 is connected to the bottom 23-2 of the door frame and can be connected by welding, threaded connection, screws, etc. There are gaps between the moving member 10 and both the side 23-1 and the bottom 23-2 of the door frame to facilitate the movement of the moving member 10. The lower part of the moving member 10 passes through the reserved opening 28 in the side 23-1 and the bottom 23-2 of the door frame and is placed in the groove 17. The upper part of the moving member 10 is arranged in the side 23-1 of the door frame, and the lower part of the moving member 10 is arranged in the groove 17 at the bottom 23-2 of the door frame, which is convenient for the moving member 10 to be connected to the pulling link 7 and for the moving rod to move in the reserved opening 28. The elastic member further includes a thickening member 15, a bearing flange connection seat 12, and a support guide member 9. The bearing flange connection seat 12 is arranged on the fixing member 13, the guide rod 14 is arranged in the bearing flange connection seat 12, and a thickening member 15 is arranged between the guide rod 14 and the moving member 10. The thickening member 15 is welded to both the guide rod 14 and the moving member 10, or can be connected by other means. The spring 11 is arranged on the guide rod 14 between the bearing flange connection seat 12 and the thickening member 15. At least two guide rods 14 are provided. A support guide member 9 is arranged between the moving member 10 and the side 23-1 of the door frame. A bushing 19 is arranged on the support guide member 9, and the touch rod 8 is arranged in the bushing 19. The support guide member 9 is connected to the bottom 23-2 of the door frame by welding or by means of screw connection, snap connection, bonding, etc. The fixing member 13 and the guide rod 14 mainly play the role of fixing and guiding the spring 11. The thickening member 15 is more convenient for force transmission and structural stability. The bearing flange connection seat 12 is convenient for the movement of the guide rod 14 and also provides a supporting role. The arrangement of the support guide member 9 and the bushing 19 is mainly to facilitate the movement of the touch rod 8 and at the same time play the role of support and guidance.

[0036] In another embodiment, a settlement housing 20 is arranged in the groove 17 at the bottom 23-2 of the door frame. A threshold 21 and a lifting device are arranged in the settlement housing 20. The bottom of the settlement housing 20 is connected to the lower plate 1-2 by screws, and the settlement housing 20 is connected to the bottom 23-2 of the door frame by screws. The height of the settlement housing 20 is the same as the depth of the groove 17, so that the top of the settlement housing 20 is flush with the top surface of the bottom 23-2 of the door frame (i.e., flush with the ground) to facilitate passage. However, sometimes for the convenience of installing the settlement housing 20, the height of the settlement housing 20 is slightly greater than the depth of the groove 17, so that the top of the settlement housing 20 is slightly higher than the top surface of the bottom 23-2 of the door frame (i.e., slightly higher than the ground). Since the protruding part is very small, it does not affect normal passage. One end of the pulling link 7 is arranged in the settlement housing 20, and the other end is arranged in the groove 17 at the bottom 23-2 of the door frame. The arrangement of the settlement housing 20 allows sundries to fall into the gap for easy removal. It is also convenient to judge and repair problems in time during the lifting process of the threshold 21.

[0037] In another embodiment, the threshold 21 is a groove-like structure (a cavity structure with front and rear sides and a top), the upper plate 1-1 is connected to the threshold 21 by screws, the length of the plate 1 < the length of the threshold 21, and there is a gap between the threshold 21 and the settlement housing 20 to facilitate the lifting and lowering of the threshold 21 and reduce friction; a lead plate 22 is provided on the inner side wall of the threshold 21, and the lead plate 22 is adhesively connected to the side wall of the threshold 21. There is a gap between the lead plate 22 and the lifting device. The setting of the lead plate 22 does not affect the movement of the cross support rod 15 or the lifting and lowering of the lifting device. The height of the lead plate 22 ≥ the size of the gap between the bottom 23-2 of the door frame and the door leaf, and the height of the lead plate 22 ≤ the height of the threshold 21; extension blocks 3 are respectively provided at both ends of the lower plate 1-2. The lower plate 1-2 and the extension blocks 3 are integrally connected, adhesively connected or welded. A stabilizing member 27 is provided on the extension blocks 3. The stabilizing member 27, the extension blocks 3 and the settlement housing 20 are connected by screws. The setting of the extension blocks 3 and the stabilizing member 27 plays a role in stabilizing the plate 1, preventing deformation, and at the same time facilitating the connection between the plate 1 and the settlement housing 20.

[0038] In another embodiment, clamping members 6 are provided at the ends of the rotating shaft 2 and the central rotating shaft 18. The clamping members 6 are threadedly connected or clamped to the rotating shaft 2 and the central rotating shaft 18 to prevent the rotating shaft 2 or the central rotating shaft 18 from falling off. The length of the threshold 21 ≤ the minimum distance between the two side edges of the door frame 23 (i.e., the distance between the non-opening sides of the two door frame side edges 23-1). When the distances are equal, it is more beneficial for shielding and screening rays. When the length of the threshold 21 is slightly smaller, it is more beneficial for installation and lifting operations; lead plates 22 are provided inside the side walls of the threshold 21 on both sides to facilitate ray shielding more; there are gaps between the moving member 10 and the side and the bottom of the door frame 23 to facilitate the movement of the moving member 10; the threshold 21 is provided at the non-opening side 25 position of the bottom 23-2 of the door frame, the touch rod 8 is provided at the opening side 26 position of the door frame side edge 23-1, and the door leaf is correspondingly provided above the opening side 26 of the bottom 23-2 of the door frame.

[0039] In another embodiment, the door frame side edge 23-1 and the door frame bottom 23-2 are connected, and other existing technical connection methods such as welding can be used.

[0040] A shielding and protective door with an automatically lifting threshold adopted by the present invention is provided with a lead plate 22 inside the threshold 21, and the threshold 21 is utilized to block and shield rays. Specifically, by the opening and closing of the door leaf, when the door leaf is closed, the touch rod 8 is squeezed. The touch rod 8 moves in a direction away from the door leaf, and then the spring 11 is squeezed. The spring 11 generates an elastic force. The touch rod 8 drives the moving part 10 and the pulling link 7 to move, so that the rotating shaft 2 moves from one end of the guiding groove 4 away from the moving part 10 to the other end of the guiding groove 4, and the distance between the upper and lower plates 1 becomes larger. The threshold 21 rises to block the gap between the bottom 23-2 of the door frame and the door leaf, thereby realizing the function of blocking and shielding rays. When the door leaf is opened, the door leaf no longer squeezes the touch rod 8. The moving part 10 is subjected to the elastic force of the spring 11 on the one hand, and on the other hand, the moving part 10 is subjected to the pulling force of the pulling link 7. This pulling force is generated by the gravity of the threshold 21, the lead plate 22, and the upper plate 1-1, etc., which causes the pulling link 7 to move in a direction away from the moving part 10. Due to the combined action of the pulling force and the elastic force, the moving part 10 drives the touch rod 8 to move towards the door leaf until the touch rod 8 returns to its original state, the spring returns to its original state, and the rotating shaft 2 also returns to its original position from the other end of the guiding groove 4. The distance between the upper and lower plates 1 becomes smaller, and the threshold 21 descends. At this time, the top of the threshold 21 is flush with the top surface of the bottom 23-2 of the door frame. The spring 11 not only plays the above role but also plays a buffering role, making the transfer of the rotating shaft 2 from one end of the guiding groove 4 to the other end relatively gentle, preventing hard contact and wear between the rotating shaft 2 and the guiding groove 4. When the touch rod 8 returns to its original state, the spring 11 is squeezed to return to its natural state, and then stretched, which also plays a buffering role for the touch rod 8, thereby buffering the return of the rotating shaft 2 from the guiding groove 4 to its original position, avoiding hard contact, and reducing wear. Similarly, when the touch rod 8 is squeezed and the rotating shaft 2 moves from one end of the guiding groove 4 to the other end, the spring 11 also plays a buffering role. By the opening and closing of the door leaf, the lifting of the threshold 21 is automatically controlled. When the threshold 21 is at the lowest point, its top is flush with the ground, facilitating the passage of people, vehicles, and objects. After the threshold 21 rises, the threshold 21 can block and shield the rays spilling out between the door leaf and the bottom 23-2 of the door frame, avoiding radiation spillage.

[0041] A preparation method for a shielding and protective door with an automatically lifting threshold is as follows:

[0042] (1) First, mill a groove on the side 23-1 of the door frame, mill a reserved hole at a position on the side 23-1 of the door frame close to the opening side, mill a groove 17 at a position on the bottom 23-2 of the door frame close to the opening side, and mill a reserved opening 28 at a position on the bottom 23-2 of the door frame close to the non-opening side corresponding to the groove on the side 23-1 of the door frame.

[0043] (2) Connect the side 23-1 of the door frame to the bottom 23-2 of the door frame. Install the control device in the slot on the side 23-1 of the door frame. The control device is connected to the bottom 23-2 of the door frame. The touch rod 8 of the control device is installed in the reserved hole. One end of the moving part 10 in the control device passes through the reserved opening 28 and is installed in the groove 17 at the bottom 23-2 of the door frame. Install the settlement housing 20 in the groove 17 at the bottom 23-2 of the door frame. Then install the lifting device in the settlement housing 20. Install the pulling link 7 in the groove 17 and the settlement housing 20. Connect the moving part 10 in the control device and the rotating shaft 2 of the lifting device through the pulling link 7;

[0044] (3) Install a lead plate 22 on the inner side wall of the threshold 21. Install the threshold 21 on the lifting device:

[0045] (4) After the door frame 23 is installed, connect the door frame 23 and the door leaf using the connector 24. The connector 24 is installed at a position close to the reserved hole. The connector 24 is installed on the bottom 23-2 of the door frame.

[0046] Through the preparation method provided by the present invention, the process is simple and easy to operate. Processing is carried out on the original door frame and door leaf of the side-opening door, and the lifting device, control device, etc. can be installed. There is no need to redesign the door frame and door leaf, saving resources, time, and labor costs. The shielding protection door prepared by this preparation method can automatically control the lifting of the threshold depending on the opening and closing of the door leaf, effectively blocking the gap between the bottom 23-2 of the door frame and the door leaf, and achieving the shielding of rays.

[0047] A shielding protection door with an automatically lifting threshold and its preparation method provided by the present invention can achieve the automatic lifting of the threshold 21 through the cooperation of the control device and the lifting device and by using the opening and closing of the door leaf. When the door leaf is in the open state, the threshold 21 is flush with the ground, which is beneficial for passage. When the door leaf is in the closed state, the threshold 21 rises to shield the rays and prevent radiation from overflowing. The overall structure formed by the combination of devices such as the lifting device and the control device in the protection door is stable and not prone to failure. Once a failure occurs, it is easy to detect problems and convenient for disassembly, repair, and installation. The automatic lifting of the threshold 21 does not require manual operation, reducing manpower, material resources, and costs. Moreover, the preparation method of this protection door has a simple process, is easy to operate, install, disassemble, and repair, effectively reducing costs and being conducive to industrial production.

[0048] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A shielding protection door with an automatically lifting threshold, comprising a door frame (23) and a door leaf. A threshold (21) is arranged in a groove (17) at the bottom (23-2) of the door frame, and the bottom (23-2) of the door frame is flush with the ground. It is characterized in that: A lead plate (22) is arranged inside the threshold (21), a lifting device is arranged in the threshold (21), and there is a gap between the lead plate (22) and the lifting device; the lifting device is connected to the groove (17) at the bottom of the doorframe (23-2), a control device is arranged inside the side of the doorframe (23-1), and the lifting device is connected to the control device by pulling a connecting rod (7); the control device includes a moving part (10), an elastic part and a touch rod (8). One end of the moving part (10) passes through a reserved opening (28) at the bottom of the doorframe (23-2) and is connected to the pulling connecting rod (7), the other end of the moving part (10) is connected to the touch rod (8), the touch rod (8) passes through the side of the doorframe (23-1), and the touch rod (8) is arranged on the side of the doorframe (23-1) close to the connection between the doorframe (23) and the door leaf; an elastic part is connected to the side of the moving part (10) away from the touch rod (8), and the elastic part is connected to the bottom of the doorframe (23-2); the height of the threshold (21) > the gap between the bottom of the doorframe (23-2) and the door leaf, the depth of the groove (17) at the bottom of the doorframe (23-2) ≥ the height of the threshold (21), and the length of the threshold (21) ≤ the minimum distance between the two sides of the doorframe (23); the touch rod (8) is arranged on the side of the doorframe (23-1) close to the opening side (26), and the threshold (21) is arranged on the bottom of the doorframe (23-2) close to the non-opening side (25).

2. The shielding protection door with an automatically lifting threshold according to claim 1, wherein: The lifting device includes a plate (1), a rotating shaft (2), a central rotating shaft (18) and a cross support rod (5). The upper and lower plates (1) are arranged in parallel, and the lower plate (1-2) is connected to the groove (17) at the bottom of the doorframe (23-2); a cross support rod (5) is arranged between the two plates (1), and cross support rods (5) are correspondingly arranged on both sides of the two plates (1). The intersection points of the two cross support rods (5) are connected by a central rotating shaft (18), and the ends of the two cross support rods (5) are movably connected to the plate (1) by a rotating shaft (2); both ends of the rotating shaft (2) on one side of the central rotating shaft (18) are respectively arranged in a guide groove (4), the guide groove (4) is arranged on the side wall of the plate (1), and one end of the rotating shaft (2) connected to the pulling connecting rod (7) is arranged in the groove (17) at the bottom of the doorframe (23-2).

3. The shielding protection door with an automatically lifting threshold according to claim 2, wherein: At least two central rotating shafts (18) are arranged between the two plates (1); the rotating shafts (2) in the guide grooves (4) near the adjacent central rotating shafts (18) are connected by a transmission rod (16), and the rotating shafts (2) connected by the transmission rod (16) are arranged in the guide grooves (4) on the side wall of the lower plate (1-2).

4. An automatic lifting threshold shielding and protecting door according to claim 2 or 3, characterized in that: The guide groove (4) is arranged on the side of the central rotating shaft (18) away from the moving part (10); clamping parts (6) are arranged at the ends of the rotating shaft (2) and the central rotating shaft (18).

5. The shielding protection door with an automatically lifting threshold according to claim 1, wherein: The elastic component includes a spring (11), a fixing member (13), and a guide rod (14); the guide rod (14) passes through the fixing member (13) and the spring (11) to connect the moving member (10), the fixing member (13) is connected to the bottom of the door frame (23-2), and there are gaps between the moving member (10) and the side of the door frame (23-1) and the bottom of the door frame (23-2).

6. The shielding protection door with an automatically lifting threshold according to claim 5, characterized in that: The elastic component further includes a thickening member (15), a bearing flange connecting seat (12), and a support guide member (9). The bearing flange connecting seat (12) is arranged on the fixing member (13), the guide rod (14) is arranged in the bearing flange connecting seat (12), a thickening member (15) is arranged between the guide rod (14) and the moving member (10), the thickening member (15) is connected to both the guide rod (14) and the moving member (10), and the spring (11) is arranged on the guide rod (14) between the bearing flange connecting seat (12) and the thickening member (15); at least two guide rods (14) are provided; a support guide member (9) is arranged between the moving member (10) and the side of the door frame (23-1), a bushing (19) is arranged on the support guide member (9), a touch rod (8) is arranged in the bushing (19), and the support guide member (9) is connected to the bottom of the door frame 23-2.

7. The shielding protection door with an automatically lifting threshold according to claim 1, characterized in that: A settlement housing (20) is arranged in a groove (17) at the bottom of the door frame (23-2). A threshold (21) and a lifting device are arranged in the settlement housing (20). The bottom of the settlement housing (20) is connected to the lower plate (1-2), the settlement housing (20) is connected to the bottom of the door frame (23-2), and the height of the settlement housing (20) is the same as the depth of the groove (17). One end of a pulling link (7) is arranged in the settlement housing (20), and the other end is arranged in the groove (17) at the bottom of the door frame (23-2).

8. The shielding protection door with an automatically lifting threshold according to claim 7, wherein: The threshold (21) is a groove-shaped structure. The upper plate (1-1) is connected to the threshold (21). The length of the plate (1) < the length of the threshold (21). There is a gap between the threshold (21) and the settlement housing (20); a lead plate (22) is arranged on the inner side wall of the threshold (21), and the height of the lead plate (22) ≥ the gap between the bottom of the door frame (23-2) and the door leaf.

9. An automatic lifting threshold shielding and protection door according to claim 7 or 8, characterized in that: Extension blocks (3) are respectively arranged at both ends of the lower plate (1-2). A stabilizing member (27) is arranged on the extension blocks (3). The stabilizing member (27), the extension blocks (3), and the settlement housing (20) are connected by screws.

10. The preparation method of a shielding protection door with an automatically lifting threshold according to any one of claims 7-9, characterized in that The specific steps are as follows: (1) First, mill a groove on the side of the door frame (23-1), mill a reserved hole at a position near the opening side of the side of the door frame (23-1), mill a groove (17) at a position near the opening side of the bottom of the door frame (23-2), and mill a reserved opening (28) at a position near the non-opening side of the bottom of the door frame (23-2) corresponding to the groove (17) on the side of the door frame (23-1). (2) Install the control device in the slot on the side of the door frame (23-1) and connect it to the bottom of the door frame (23-2). Install the touch rod (8) of the control device in the reserved hole. One end of the moving part (10) in the control device passes through the reserved opening (28) and is installed in the groove (17) at the bottom of the door frame (23-2). Install the settlement housing (20) in the groove (17) at the bottom of the door frame (23-2), then install the lifting device in the settlement housing (20), install the pulling link (7) in the groove (17) and the settlement housing (20), and connect the moving part (10) in the control device and the rotating shaft (2) of the lifting device through the pulling link (7); (3) Install the lead plate (22) on the inner side wall of the threshold (21), and install the threshold (21) on the lifting device: (4) After the door frame (23) is installed, connect the door frame (23) and the door leaf using the connector (24), and install the connector (24) at a position close to the reserved hole.

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