An adaptive folding cover plate device for the groove of a radiation protection door

Abstract

The present invention relates to a radiation protection door groove adaptive folding cover device, which includes a door body, a motor drive device, a lower track, a ground groove, a bottom bearing, a triangular steel frame, a long cover plate, a hinge device and a short cover plate. The lower track is installed in the ground groove, the motor drive device is installed on the door body, the vertex of the triangular steel frame is connected to the bottom bearing, the bracket is welded to one end of the long cover plate, and the triangular steel frame rotates with the bottom bearing as the vertex. The long cover plate is connected to the short cover plate, and the short cover plate is connected to the bottom edge on one side of the door body. The cover plate is adaptively retracted through hinges and the bottom bearing. The present invention solves the problem of ray leakage at the bottom of ordinary radiation protection doors. The radiation protection door is equipped with an adaptive folding cover plate, which does not require additional manual intervention or additional power. When the door is closed, the cover plate automatically slides and folds up along with the movement of the door body. When the door is opened, it automatically extends and flattens in the ground groove, and the upper surface of the cover plate is flush with the ground of the detection room doorway, facilitating entry and exit.

Description

Technical Field

[0001] The present invention relates to the field of radiation protection in a ray detection room, and particularly to a radiation protection door groove adaptive folding cover plate device. Background Art

[0002] As an invisible killer, the radiation ionization of rays can be divided into two categories: stochastic effects and non-stochastic effects. Stochastic effects have no dose threshold, and their occurrence is independent of dose; non-stochastic effects have a dose threshold and are dose-related. Therefore, the longer the detection personnel are exposed to chronic low-dose irradiation, the greater the probability of stochastic effects, and radiation chronic injuries such as leukemia, cancer, aplastic anemia, cataract, and shortened lifespan are extremely likely to occur several years or even decades after irradiation.

[0003] Due to the concealment, long-term nature, and uncertainty of the harm of ray radiation ionization, at present, in addition to distance protection, the effective preventive measure is to effectively shield the ray detection room to reduce its stochastic effects and non-stochastic effects on the surrounding environment.

[0004] In order to shield the ray detection room from radiation ionization, the material and thickness of the walls of the detection workshop must meet the shielding requirements, and at the same time, the door must be a special radiation protection door. At present, the commonly used radiation protection doors on the market are suspension type and ground track type. The suspension type radiation protection door usually sets suspension track pulleys at the top of the door. The suspension track is connected to the wall to lift the radiation protection door and bear its weight. Generally, a motor is used to drive the rollers to open and close the radiation protection door. The ground track type radiation protection door usually sets tracks and rollers at the top and the ground of the door. The track at the top of the door is connected to the wall to prevent deviation when the door moves. The ground track bears the weight of the radiation protection door. Generally, the radiation protection door is opened and closed by electric or manual pushing and pulling. In the above structural design, if the bottom of the door body is at the same height as the ground of the detection room, there is an easy problem of ray leakage at the bottom of the door. If the bottom of the door body is lower than the ground of the detection room, there is an easy problem of uneven ground in the door opening.

[0005] At present, the commonly used radiation protection doors on the market are suspension type and ground track type. In this structural design, for the scheme where the bottom of the door body is at the same height as the ground of the detection room, both the suspension type and ground track type radiation protection doors will have the problem of ray leakage at the bottom of the door, which greatly reduces the radiation protection effect of the radiation protection door, resulting in a much higher radiation dose around the radiation protection door than in other areas outside the detection room. For the scheme where the bottom of the door body is lower than the ground of the detection room, there will be steps on the ground of the door opening, resulting in uneven ground of the door opening, which affects the normal entry and exit of personnel and vehicles. Summary of the Invention

[0006] Technical Problems to be Solved by the Present Invention

[0007] The present invention provides a radiation protection door groove adaptive folding cover device to solve the problems that the bottom of a common radiation protection door cannot effectively shield rays and the uneven ground in the detection room affects the entry and exit of personnel and vehicles.

[0008] The technical solution adopted by the present invention to solve the technical problems

[0009] A radiation protection door groove adaptive folding cover device is composed of a radiation protection door and an adaptive folding cover device.

[0010] The radiation protection door includes a detection room door opening, control buttons, a door body, a motor drive device, an upper track, a lower track and a ground groove. The door body is outside the detection room door opening. The ground groove is at the bottom of the door body. The lower track is fixedly installed in the ground groove by bolts. The control buttons are installed on the wall of the detection room door opening. The motor drive device is installed on the door body. The motor drive device drives the door body to move on the lower track. The weight of the door body is borne by the lower track. The upper track is installed and fixed on the wall surface at the top position of the door body, playing a role in preventing deviation during the movement of the door body.

[0011] The adaptive folding cover device includes a bottom bearing, a triangular steel frame, a long cover plate, a middle hinge device, a short cover plate and a bottom hinge device. The bottom bearing is fixedly installed in the ground groove by bolts. The vertex of the triangular steel frame is connected to the bottom bearing. The bracket is welded to one end of the long cover plate. When the door body moves, the triangular steel frame rotates with the bottom bearing as the vertex. The long cover plate is connected to the short cover plate through the middle hinge device. The short cover plate is connected to the bottom edge of one side of the door body through the bottom hinge device. When the door body moves, the cover plate adapts to expand and contract through the hinge and the bottom bearing.

[0012] Furthermore, it also includes rubber pads. The rubber pads are installed on both sides of the bottom of the cover plate, playing a role in shock absorption, buffering and noise elimination.

[0013] Furthermore, it also includes a spring mechanism. The spring mechanism is installed at one end of the long cover plate, playing a role in shock absorption, buffering and noise elimination.

[0014] Furthermore, it also includes shims. The shims are installed on both walls of the ground groove. When the cover plate descends and levels the ground groove, the shims play a role in supporting the cover plate.

[0015] Furthermore, the sum of the length of the short cover plate and the depth of the ground groove is equal to the length of the long cover plate, enabling smooth retraction during the folding of the adaptive cover and realizing automatic folding.

[0016] Furthermore, the sum of the height of the shims, the thickness of the rubber pads and the cover plate is equal to the depth of the ground groove. When the cover plate is leveled, the upper surface of the cover plate is flush with the ground inside and outside the detection room, facilitating the entry and exit of personnel and vehicles.

[0017] Beneficial effects obtained by the present invention

[0018] The present invention provides a radiation protection door groove adaptive folding cover device. By embedding the door body of the radiation protection door into the ground groove, the bottom of the door is lower than the ground height of the detection room, solving the problem of ray leakage at the bottom of ordinary radiation protection doors. At the same time, the radiation protection door is equipped with an adaptive folding cover, which does not require additional intervention by personnel and does not require additional power when the radiation protection door moves. When it closes, it automatically slides and folds along with the movement of the door body, and when it opens, it automatically extends and flattens in the ground groove. The cover is flush with the ground of the detection room door opening, facilitating the entry and exit of personnel and vehicles. It solves the problems that the bottom of ordinary radiation protection doors cannot effectively shield rays and that the uneven ground of the door opening causes inconvenience for the entry and exit of personnel and vehicles.

[0019] The advantages of the present invention are that the door body of the radiation protection door is embedded in the ground groove, and its bottom is lower than the ground height of the detection room, solving the problem of ray leakage at the bottom of ordinary radiation protection doors; the radiation protection door is equipped with an adaptive folding cover, which does not require additional intervention by personnel and does not require additional power when the radiation protection door moves. When it closes, it automatically slides and folds along with the movement of the door body, and when it opens, it automatically extends and flattens in the ground groove. The upper surface of the cover is flush with the ground of the detection room door opening, facilitating the entry and exit of personnel and vehicles. Description of the drawings

[0020] The drawings described herein are used to provide a further understanding of the present invention and form a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 : Front schematic diagram of the radiation protection door groove adaptive folding cover device;

[0022] Figure 2 : Side view schematic diagram in the A direction;

[0023] Figure 3 : Side view schematic diagram in the B direction;

[0024] Figure 4 : Top view after expansion;

[0025] Figure 5 : Partial enlarged schematic diagram of the spring mechanism;

[0026] Figure 6 : Partial enlarged schematic diagram of the bottom bearing assembly;

[0027] Wherein: 1 - upper track, 2 - inspection room door opening, 3 - door body, 4 - control button, 5 - floor groove, 6 - lower track, 7 - motor drive device, 8 - lower track socket, 9 - bottom hinge device, 10 - short cover plate, 11 - middle hinge device, 12 - spring mechanism, 13 - shim, 14 - long cover plate, 15 - bottom bearing assembly, 16 - triangular steel frame, 17 - rubber pad, 121 - fixed seat, 122 - fixing bolt, 123 - lifting ring, 124 - connecting rod, 125 - spring assembly, 126 - rubber pad, 151 - fixing bolt, 152 - bottom bearing, 153 - bearing connecting rod. Detailed implementation mode

[0028] The present invention provides a radiation protection door groove adaptive folding cover plate device. By embedding the door body of the radiation protection door into the floor groove, making its bottom lower than the height of the inspection room floor, the problem of ray leakage at the bottom of the ordinary radiation protection door is solved; at the same time, the radiation protection door is equipped with an adaptive folding cover plate, which does not require additional intervention by personnel and does not require additional power when the radiation protection door moves. When it closes the door, it automatically slides and folds along with the movement of the door body. When it opens the door, it automatically extends and flattens on the floor groove, and the cover plate is flush with the floor of the inspection room door opening, which is convenient for personnel and vehicles to enter and exit. It solves the problems that the bottom of the ordinary radiation protection door cannot effectively shield rays and the uneven floor of the door opening causes inconvenience for personnel and vehicles to enter and exit.

[0029] In order to make the purpose, features and advantages of the technical solution proposed by the present invention more obvious and understandable, the following will be combined with the attached Figures 1-6 , and the embodiments of the technical solution proposed by the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the proposed technical solution, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0030] A radiation protection door groove adaptive folding cover plate device is composed of a radiation protection door and an adaptive folding cover plate device. The radiation protection door includes an inspection room door opening 2, a door body 3, a control button 4, a motor drive device 7, an upper track 1, a lower track 6 and a floor groove 5. The door body 3 is arranged on the outer side of the inspection room door opening 2, the floor groove 5 is arranged at the bottom of the door body 3, and the lower track 6 is fixedly installed in the floor groove 5 by bolts. The control button 4 is installed on the wall of the inspection room door opening 2, the motor drive device 7 is fixedly installed on the door body 3, and after pressing the control button "open the door" or "close the door", the motor drive device 7 drives the door body 3 to move on the lower track 6. The weight of the door body is borne by the lower track, and the upper track 1 is fixedly installed on the wall surface at the top position of the door body 3, which plays a role in preventing deviation during the movement of the door body 3.

[0031] The adaptive folding cover plate device includes a bottom bearing assembly 15, a triangular steel frame 16, a long cover plate 14, a spring mechanism 12, a middle hinge device 11, a short cover plate 10, a bottom hinge device 9, a rubber pad 17 and a cushion iron 13. The bottom bearing assembly 15 is fixedly installed in the ground groove 5 by bolts. The vertex of the triangular steel frame 16 is welded to the bottom bearing assembly 15, and the bracket of the triangular steel frame is welded to one end of the long cover plate 14. When the door body moves, the triangular steel frame 16 rotates with the bottom bearing assembly 15 as the vertex. The long cover plate 14 is connected to the short cover plate 10 through the middle hinge device 11, and the short cover plate 10 is connected to the bottom side of one side of the door body 3 through the bottom hinge device 9. When the door body moves, the cover plate performs adaptive telescoping through the hinge and the bottom bearing.

[0032] The spring mechanism 12 includes a fixed seat 121, a fixed bolt 122, a lifting ring 123, a connecting rod 124, a spring assembly 125 and a rubber pad 126. The fixed seat 121 is installed at one end of the long cover plate 14. The fixed bolt 122 fixes the lifting ring 123, and the lifting ring can rotate freely on the fixed bolt. One end of the spring assembly 125 is fixedly connected to the lifting ring, and the other end is fixedly connected to the middle of the connecting rod 124. The connecting rod 124 can freely expand and contract along with the spring assembly 125, and the rubber pad 126 is fixed at the end of the connecting rod 124.

[0033] The spring mechanism 12 is installed at one end of the long cover plate 14. The rubber pads 17 are installed on both sides of the bottom of the cover plate, and the cushion irons 13 are installed on the two walls of the ground groove 5. When the cover plate descends and lies flat on the ground groove, the cushion irons 13 play a role in supporting the cover plate, and the rubber pads 17 and the spring mechanism 12 play a role in shock absorption, buffering and noise elimination.

[0034] Specific implementation description:

[0035] The adaptive folding cover plate device of the radiation protection door groove has two states: open and closed.

[0036] When the radiation protection door is open, press the control button of the door body driving motor. The door body moves on the ground groove track, and the adaptive folding cover plate moves with the door body without additional intervention by personnel and additional power. Joint movement is carried out through the middle hinge device of the cover plate and the bottom bearing in the ground groove. In the device, the sum of the length of the short cover plate and the depth of the ground groove is equal to the length of the long cover plate, so that it can be smoothly retracted when the adaptive cover plate is folded, realizing the closed state of the device. In the device, the door body is embedded in the ground groove. In the closed state of the device, its bottom is lower than the ground height of the detection room. When the beam is emitted in the detection room, the problem of ray leakage at the bottom of the ordinary radiation protection door is effectively solved.

[0037] When the radiation protection door is closed, press the control button of the door driving motor. The door moves on the ground groove track, and the adaptive folding cover plate moves with the door without additional intervention or power from personnel. Through the hinge device in the middle of the cover plate and the bottom bearing in the ground groove, it performs joint movement and automatically extends and flattens in the ground groove to achieve the deployed state of the device. In the device, rubber pads and spring mechanisms are installed at the bottom of the cover plate. When the cover plate descends and flattens in the ground groove, the rubber pads and spring mechanisms play a role in shock absorption, buffering and noise elimination. In the device, the height of the pad iron, the sum of the thicknesses of the rubber pad and the cover plate are equal to the depth of the ground groove. When the cover plate is flattened, the upper surface of the cover plate is flush with the ground inside and outside the inspection room, facilitating the entry and exit of personnel and vehicles.

[0038] The present invention has been actually applied to the radiation protection door of the 2MeV accelerator CT equipment in Workshop 85-1. Through actual use and testing, the door body of the radiation protection door is embedded in the ground groove, and its bottom is lower than the ground height of the inspection room, which can effectively solve the problem of radiation leakage at the bottom of ordinary radiation protection doors. The adaptive folding cover plate automatically slides and folds with the door body when the door is closed, and automatically extends and flattens in the ground groove when the door is opened. The upper surface of the cover plate is flush with the ground of the inspection room door opening, solving the problem of inconvenient entry and exit of personnel and vehicles caused by uneven ground of the door opening.

Claims

1. A radiation protection door groove adaptive folding cover plate device, which consists of a radiation protection door and an adaptive folding cover plate device. It is characterized in that: The radiation protection door includes a detection room door opening, control buttons, a door body, a motor drive device, an upper track, a lower track and a ground groove. The door body is outside the detection room door opening. The ground groove is at the bottom of the door body. The lower track is fixedly installed in the ground groove by bolts. The control buttons are installed on the wall of the detection room door opening. The motor drive device is installed on the door body. The motor drive device drives the door body to move on the lower track. The weight of the door body is borne by the lower track. The upper track is installed and fixed on the wall surface at the top position of the door body, playing a role in preventing deviation during the movement of the door body. The adaptive folding cover plate device includes a bottom bearing, a triangular steel frame, a long cover plate, a middle hinge device, a short cover plate and a bottom hinge device. The bottom bearing is fixedly installed in the ground groove by bolts. The vertex of the triangular steel frame is connected to the bottom bearing. The bracket is welded to one end of the long cover plate. When the door body moves, the triangular steel frame rotates with the bottom bearing as the vertex. The long cover plate is connected to the short cover plate through the middle hinge device. The short cover plate is connected to the bottom edge of one side of the door body through the bottom hinge device. When the door body moves, the cover plate adapts to expand and contract through the hinge and the bottom bearing. It also includes a spring mechanism. The spring mechanism is installed at one end of the long cover plate close to the middle hinge device, playing a role in shock absorption, buffering and noise elimination. The spring mechanism includes a fixed seat, a fixed bolt, a hanging ring, a connecting rod, a spring assembly and a rubber pad. The fixed seat is installed at one end of the long cover plate, and the fixed bolt fixes the hanging ring. One end of the spring assembly is fixedly connected to the hanging ring, and the other end is fixedly connected to the middle of the connecting rod. The rubber pad is fixed at the end of the connecting rod.

2. The radiation protection door groove adaptive folding cover plate device according to claim 1, It is characterized in that: It also includes rubber pads. The rubber pads are installed on both sides of the bottoms of the long cover plate and the short cover plate, playing a role in shock absorption, buffering and noise elimination.

3. The radiation protection door groove adaptive folding cover plate device according to claim 1, It is characterized in that: It also includes shims. The shims are installed on both walls of the ground groove. When the cover plate descends and levels the ground groove, the shims play a role in supporting the cover plate.

4. The radiation protection door groove adaptive folding cover plate device according to claim 1, It is characterized in that: The sum of the length of the short cover plate and the depth of the ground groove is equal to the length of the long cover plate, and it can be smoothly retracted during the adaptive folding of the cover plate to achieve automatic folding.

5. The radiation protection door groove adaptive folding cover plate device according to claim 3, It is characterized in that: The height of the shims, the sum of the thicknesses of the rubber pads and the cover plate is equal to the depth of the ground groove. When the cover plate is leveled, the upper surface of the cover plate is flush with the ground inside and outside the detection room, facilitating the entry and exit of personnel and vehicles.

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