Medical ray protection screen

Abstract

The utility model discloses a medical automatic ray protection screen which comprises a base, a controller, a driving device, a coupler and a speed reducer are arranged in the base, the speed reducer is connected between the coupler and the driving device, and the controller is electrically connected with the driving device and the speed reducer. The first stand column is fixedly arranged on the base, a transmission mechanism, a lead curtain mechanism and a limiting device are arranged in the first stand column, the transmission mechanism is in linkage with the coupler, and the transmission mechanism is connected with the lead curtain mechanism; the distance measuring device and the first stand column are arranged in a spaced mode, and the distance measuring device is electrically connected with the controller. According to the utility model, the distance measuring device sends out a feedback signal to realize automatic adjustment of the position of the detection window, so that the influence of distance limitation between the camera and the DR bulb tube and surrounding light factors on the performance operation is avoided, the secondary damage of radiation to the body of a patient is reduced, and the irradiated part of the patient is more accurate and safer.

Description

Technical Field

[0001] The utility model relates to the technical field of X-ray protection, in particular to a medical automatic ray protection screen. Background Art

[0002] With the popularization of X-rays in the medical field, people gradually realize that the damage caused by X-rays to the body will increase with the increase of the radiation dose. High-dose X-rays will cause tissue damage to the irradiated area and even lead to cancer. Even low-dose X-rays may still induce cancer and cause genetic defects in the irradiated germ cells. In the medical industry, it is sometimes necessary to detect and treat patients with X-rays. During the treatment process, it is necessary to protect patients from X-ray damage. Therefore, automatic ray protection screens have emerged. However, due to the different heights and diseased parts of patients, the existing medical ray protection screens have the problem that the detection window is not easy to adjust for the detection and treatment of different populations and different diseased parts, which will cause damage to the health of patients.

[0003] In the existing patent CN215017806U, the automatic protection screen realizes positioning through visual recognition devices such as cameras, and then realizes the automatic following function. However, due to distance limitations and ambient light factors, it cannot accurately position the lead curtain and adjust the size of the irradiation window, thus greatly reducing the protection effect of the automatic protection screen.

[0004] Therefore, an automatic X-ray protection screen is needed, which can more accurately position the lead curtain and adjust the size of the irradiation window to make the irradiated part of the patient more accurate, so as to reduce the radiation damage of rays to the human body. Summary of the Utility Model

[0005] Based on this, in view of the above problems, it is necessary to provide a medical automatic ray protection screen, which can more accurately position the lead curtain and adjust the size of the irradiation window to make the irradiated part of the patient more accurate, so as to reduce the radiation damage of rays to the human body.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A medical automatic ray protection screen, comprising:

[0008] A base, wherein a controller, a driving device, a coupling and a reducer are arranged inside the base, the reducer is connected between the coupling and the driving device, and the controller is electrically connected to the driving device and the reducer respectively;

[0009] The first vertical column is fixedly arranged on the base. A transmission mechanism, a lead curtain mechanism and a limiting device are arranged inside the first vertical column. The transmission mechanism is linked with the coupling, the transmission mechanism is connected to the lead curtain mechanism, the limiting device is installed on the inner side of the first vertical column, the lead curtain mechanism moves within the range defined by the limiting device, and the limiting device is electrically connected to the controller;

[0010] The distance measuring device is arranged at an interval from the first vertical column, and the distance measuring device is electrically connected to the controller.

[0011] In one embodiment, the transmission mechanism includes a first transmission device and a second transmission device. The first transmission device includes a main sprocket, a slave sprocket and a chain wound around the main sprocket and the slave sprocket. The second transmission device includes a driving wheel, a driven wheel and a synchronous belt wound between the driving wheel and the driven wheel. The main sprocket is linked with the coupling, the slave sprocket is linked with the driving wheel, and the driven wheel is installed at the top of the first vertical column.

[0012] In one embodiment, a counterweight block is arranged on the synchronous belt, and a counterweight pulley is arranged on the counterweight block. The counterweight pulley moves relatively on the inner wall of the first vertical column.

[0013] In one embodiment, the lead curtain mechanism includes a mounting plate, a first lead curtain device and a second lead curtain device. The first lead curtain device and the second lead curtain device are installed on the mounting plate, and the first lead curtain device is located above the second lead curtain.

[0014] In one embodiment, a plurality of rubber-coated bearings are arranged on three surfaces of the mounting plate, and the rubber-coated bearings are in contact with the first vertical column.

[0015] In one embodiment, a first synchronous connecting piece and a second synchronous connecting piece are arranged on the synchronous belt. The first synchronous connecting piece is located above the second synchronous connecting piece, and the first synchronous connecting piece and the second synchronous connecting piece are fixedly connected to the mounting plate.

[0016] In one embodiment, the limiting device includes a first limiting member and a second limiting member. The first limiting member is located above the second limiting member.

[0017] In one embodiment, a control panel is installed on the outer side of the first vertical column. An emergency stop button, a manual button, a lift-up button, a lift-down button, a power-on button and a power-off button are arranged on the control panel. The emergency stop button, the manual button, the lift-up button, the lift-down button, the power-on button and the power-off button are electrically connected to the controller.

[0018] In one embodiment, a plurality of universal moving casters are arranged under the base.

[0019] In one embodiment, a second vertical column is further included, and the ranging device is installed on the second vertical column.

[0020] The technical problem solved by the present utility model is that in the existing patent CN215017806U, the automatic protection screen realizes positioning through visual recognition devices such as cameras, and then realizes the automatic following function. However, limited by distance limitations and surrounding environmental light factors, it cannot more accurately position the lead curtain and adjust the size of the irradiation window, thus greatly reducing the protection effect of the automatic protection screen.

[0021] For the current protection screen, this device feeds back signals through the ranging module. The laser ranging module measures the height of the DR device detector from the ground and transmits the measurement data to the control module, enabling the device installation to be unaffected by distance limitations and surrounding environmental light factors. It can automatically adjust the position of the irradiation window, making the irradiated part of the patient more accurate and safer. This is not only beneficial to the protection of the human body, reducing the secondary harm of radiation to the patient's body, but also can absorb excess light to avoid interfering with the examination results, improving work efficiency and saving time and effort. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Among them:

[0024] Figure 1 is a three-dimensional structural schematic diagram of a medical automatic ray protection screen provided by one embodiment of the present utility model;

[0025] Figure 2 is a three-dimensional structural schematic diagram of a partial explosion in an embodiment of the present utility model;

[0026] Figure 3 is the front view of a partial explosion in an embodiment of the present utility model;

[0027] Figure 4 is Figure 2 the enlarged view at point A of

[0028] Figure 5 is Figure 3 the enlarged view at point B of

[0029] Figure 6 is Figure 3 the enlarged view at point C of

[0030] Description of the drawing reference numerals:

[0031] 1. Base; 11. Controller; 12. Driving device; 13. Coupling; 14. Reducer; 15. Base plate; 151. Universal mobile caster; 16. Side plate; 17. Installation table; 18. Weight wheel sheet metal; 19. Sliding wheel sheet metal; 2. First upright column; 22. Lead curtain mechanism; 221. Mounting plate; 2111. Rubber-coated bearing; 222. First lead curtain device; 2221. First connecting block; 2222. First connecting rod; 2223. First lead curtain; 223. Second lead curtain device; 2231. Second connecting block; 2232. Second connecting rod; 2233. Second lead curtain; 23. Limiting device; 231. First limiting member; 232. Second limiting member; 21. Transmission mechanism; 24. First transmission device; 241. Main sprocket; 242. Driven sprocket; 243. Chain; 25. Second transmission device; 251. Driving wheel; 252. Driven wheel; 253. Timing belt; 254. Counterweight; 2541. Counterweight pulley; 2431. First synchronous connecting member; 2432. Second synchronous connecting member; 26. Control panel; 3. Distance measuring device. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0033] Please refer to Figure 1 , Figure 2 and Figure 3 , wherein Figure 1 is a three-dimensional structure schematic diagram of a medical automatic ray protection screen provided by one embodiment of the present utility model; Figure 2 is a partial exploded three-dimensional structure schematic diagram in the embodiment of the present utility model; Figure 3 is a partial exploded front view in the embodiment of the present utility model;

[0034] A medical automatic ray protection screen includes:

[0035] Base 1, inside which there are a controller 11, a driving device 12, a coupling 13 and a reducer 14. The reducer 14 is connected between the coupling 13 and the driving device 12, and the controller 11 is electrically connected to the driving device 12 and the reducer 14 respectively;

[0036] Specifically, the base 1 includes a bottom plate 15 and side plates 16 surrounding the bottom plate 15 to form a closed box-shaped space. Inside this closed space, a controller 11 and a mounting table 17 are installed on the bottom plate 15. The controller 11 is located beside the mounting table 17. The speed reducer 14 is installed on the mounting table 17. The output end of the driving device 12 is connected to the speed reducer 14. The driving device 12 is preferably a motor. The driving device 12 and the speed reducer 14 are cooperatively connected, which can increase the smoothness of the motion state and the stability of the driven object. The speed reducer 14 is connected to the coupling 13, and the power is transmitted outward through the coupling 13. The side plates 16 are made of sheet metal to increase the safety of the equipment, thereby improving the safety of patients and medical staff.

[0037] The first upright column 2 is fixedly arranged on the base 1. A transmission mechanism 21, a lead curtain mechanism 22, and a limiting device 23 are arranged inside the first upright column 2. The transmission mechanism 21 is linked with the coupling 13. The transmission mechanism 21 is connected to the lead curtain mechanism 22. The limiting device 23 is installed inside the first upright column 2. The lead curtain mechanism 22 moves within the range defined by the limiting device 23. The limiting device 23 is electrically connected to the controller 11.

[0038] Specifically, the function of the lead curtain mechanism 22 is to absorb the excess X-rays during the medical detection process. The driving device 12 indirectly drives the transmission mechanism 21 through the coupling 13. The transmission mechanism 21 is connected to the lead curtain mechanism 22, thereby driving the lead curtain mechanism 22 to move up and down. In order to keep the movement of the lead curtain mechanism 22 in the vertical direction within a certain range, a limiting device 23 is provided. The limiting device 23 is fixedly installed inside the first upright column 2. The limiting device 23 includes a first limiting member 231 and a second limiting member 232. The first limiting member 231 is located above the second limiting member 232. The lead curtain mechanism 22 moves between the two limiting members. The limiting device 23 is installed up and down inside the first upright column 2. The limiting device 23 includes two groove-shaped photoelectric sensors electrically connected to the controller 11, namely a first photoelectric sensor and a second photoelectric sensor, which are used to limit the extreme positions of the up and down movement of the lead curtain mechanism 22. For example, when the lead curtain mechanism 22 reaches the first position of the first limiting member 231, the first photoelectric sensor obtains the first position signal and transmits it to the controller 11, and the controller 11 controls the lead curtain mechanism 22 to stop moving upward. When the lead curtain mechanism 22 reaches the second position of the second limiting member 232, the second photoelectric sensor obtains the second position signal and transmits it to the controller 11, and the controller 11 controls the lead curtain mechanism 22 to stop moving downward.

[0039] Please refer to Figure 5 , Figure 5 is Figure 3Enlarged view at position B, where a counterweight wheel sheet metal 18 and a sliding wheel sheet metal 19 are installed inside the first upright column 2, and the counterweight wheel sheet metal 18 and the sliding wheel sheet metal 19 are used as slide rails.

[0040] A ranging device 3, which is arranged at an interval from the first upright column 2 and is electrically connected to the controller 11.

[0041] Specifically, the ranging device 3 selects a laser element. The ranging device 3 is arranged outside the first upright column 2, maintains a certain distance from the first upright column 2, and is connected to the controller 11 through an electrical signal. Similar automatic protection screens on the current market use cameras to identify the position of the DR device's X-ray tube to achieve the automatic following function. Their installation is limited by distance limitations and the drawbacks of ambient light factors (the distance between the camera and the X-ray tube and the surrounding light will affect their performance and operation). Therefore, using a laser as the feedback signal for the ranging device 3 can achieve automatic adjustment of the position of the lead curtain mechanism 22. At the same time, it will not be affected by the distance limitation between this device and the DR X-ray tube and ambient light factors, making the irradiated part of the patient more accurate and safer. It is beneficial to the protection of the human body, reduces the secondary harm of radiation to the patient's body, can absorb excess X-rays to avoid interference with the examination results, has low cost, simple operation, and saves manpower.

[0042] Please refer to Figure 5 and Figure 6 , Figure 5 is Figure 3 Enlarged view at position B of Figure 6 is Figure 3 Enlarged view at position C of. In one embodiment, the transmission mechanism 21 includes a first transmission device 24 and a second transmission device 25. The first transmission device 24 includes a main sprocket 241, a driven sprocket 242, and a chain 243 wound around the main sprocket 241 and the driven sprocket 242. The second transmission device 25 includes a driving wheel 251, a driven wheel 252, and a synchronous belt 253 wound between the driving wheel 251 and the driven wheel 252. The main sprocket 241 is linked to the coupling 13, the driven sprocket 242 is linked to the driving wheel 251, and the driven wheel 252 is installed at the top of the first upright column 2.

[0043] Specifically, the first transmission device 24 is connected to the coupling 13. Further, the main sprocket 241 is connected to the coupling 13. The main sprocket 241 drives the driven sprocket 242 through the chain 243. The driven sprocket 242 is linked to the driving wheel 251, further driving the synchronous belt 253 to move.

[0044] Please refer to Figure 4 , Figure 4 is Figure 2Enlarged view of part A; In one embodiment, a counterweight block 254 is provided on the synchronous belt 253, and a counterweight pulley 2541 is provided on the counterweight block 254. The counterweight pulley 2541 moves relative to the counterweight wheel sheet metal 18 on the inner wall of the first column 2.

[0045] Specifically, the counterweight block 254 slides downward along the slide rail. The function of the counterweight block 254 is to offset the weight of the lead curtain mechanism 22, so that the weights on both sides of the synchronous belt 253 are kept close, reducing the power consumption of the driving device 12. At the same time, the stability of the lead curtain mechanism 22 is increased. The function of using the counterweight pulley 2541 is to reduce the horizontal shaking of the counterweight block 254 and move stably in the vertical direction, increasing the stability of the lead curtain mechanism 22, thereby reducing the ineffective X-ray irradiation on the patient's body and being beneficial to the patient's health.

[0046] In one embodiment, the lead curtain mechanism 22 includes a mounting plate 221, a first lead curtain device 222 and a second lead curtain device 223. The first lead curtain device 222 and the second lead curtain device 223 are mounted on the mounting plate 221, and the first lead curtain device 222 is located above the second lead curtain device 223.

[0047] Specifically, the first lead curtain device 222 includes a first connection block 2221, a first connecting rod 2222 and a first lead curtain 2223. The first connection block 2221 is mounted on the mounting plate 221, the first connecting rod 2222 is mounted on the first connection block 2221, and the first lead curtain 2223 is mounted on the first connection block 2221. The second lead curtain device 223 includes a second connection block 2231, a second connecting rod 2232 and a second lead curtain 2233. The second connection block 2231 is mounted on the mounting plate 221, the second connecting rod 2232 is mounted on the second connection block 2231, and the second lead curtain 2233 is mounted on the second connection block 2231. The first connecting rod 2222 and the second connecting rod 2232 are in an L shape. The function of the lead curtain is to block the ineffective X-ray and protect the human body.

[0048] A certain distance is maintained between the first lead curtain device 222 and the second lead curtain device 223 to form an irradiation window. The X-rays emitted by the X-ray tube of the DR device pass through the irradiation window and irradiate the part of the patient to be examined, and the ineffective X-rays are blocked and absorbed by the two lead curtains. The two lead curtain devices move as the mounting plate 221 moves up and down. When the position of the part of the patient to be examined is higher than the specified height, the entire irradiation window moves downward as a whole, and the upper lead curtain of the protective screen is used to protect the human body. Similarly, when the position of the part of the patient to be examined is lower than the specified height, the lead curtain moves upward, and the lower lead curtain is used to protect the human body. The feasibility of this solution is based on the fact that when the height is two meters or more and the head is examined in the standing position, there is no part that needs to be protected above the human body, and when the height is less than 50 centimeters, there is also no part that needs to be protected below.

[0049] In one embodiment, a plurality of rubber-coated bearings 2111, preferably eight, are provided on three surfaces of the mounting plate 221. The rubber-coated bearings 2111 are in sliding contact with the sliding wheel sheet metal, so that the mounting plate 221 moves vertically along the slide rail. For example, when the lead curtain mechanism 22 needs to move upward, the rubber-coated bearings 2111 slide upward relative to the slide rail, and when the lead curtain mechanism 22 needs to move downward, the rubber-coated bearings 2111 slide downward relative to the slide rail.

[0050] In one embodiment, a first synchronous connector 2431 and a second synchronous connector 2432 are provided on the synchronous belt 253. The first synchronous connector 2431 is located above the second synchronous connector 2432, and the first synchronous connector 2431 and the second synchronous connector 2432 are fixedly connected to the mounting plate 221.

[0051] Specifically, the mounting plate 221 is vertically arranged. A lead curtain mechanism 22 is installed on one surface of the mounting plate 221. Two synchronous members, namely a first synchronous connector 2431 and a second synchronous connector 2432, are installed on the synchronous belt 253. The first synchronous connector 2431 and the second synchronous connector 2432 are installed on the other surface of the mounting plate 221, fixing the mounting plate 221 and the synchronous belt 253 relative to each other, so that the mounting plate 221 moves up and down synchronously with the synchronous members, and further drives the lead curtain mechanism 22 to move up and down synchronously with the synchronous members, accurately reaching the part to be examined.

[0052] In one embodiment, the limiting device 23 includes a first limiting member 231 and a second limiting member 232. The first limiting member 231 is located above the second limiting member 232.

[0053] Specifically, the function of the limiting member is to make the lead curtain mechanism 22 move within a reasonable range.

[0054] In one embodiment, a control panel 26 is installed outside the first column 2. The control panel 26 is provided with an emergency stop button, a manual button, an up adjustment button, a down adjustment button, a power-on button and a power-off button. The emergency stop button, the manual button, the up adjustment button, the down adjustment button, the power-on button and the power-off button are electrically connected to the controller 11.

[0055] Specifically, when using the device, press the power-on button. The distance measuring device 3 measures the height of the DR device detector from the ground and transmits the measurement data to the controller 11. After the controller 11 processes and calculates, it controls the driving device 12 to make the irradiation window automatically follow the movement of the X-ray tube, automatically adjusts the position of the irradiation window, and makes the inspected part more accurate and safer. When manual intervention is required, other buttons can be used. For example, in case of an emergency, the emergency stop button can be pressed.

[0056] A notch is formed on the first column. This notch is covered with sheet metal. An emergency stop button, power-on / off and function keys are installed on the sheet metal. When X-ray workers need to finely adjust the lead curtain mechanism 22 or manually adjust the lifting height, they can operate the corresponding adjustment functions through the control panel 26 on the first column 2 or a wireless remote control.

[0057] In one embodiment, a plurality of universal moving casters are provided under the base 1. Specifically, a plurality of universal moving casters 151 are provided under the bottom plate 15 at the bottom of the base 1. The universal moving casters 151 are equipped with braking devices, which facilitate the movement and support fixation of the device. The number of the universal moving casters 151 is preferably four. When movement is required, the device can be manually pushed to move in any direction on the ground, which is convenient for rapid inspection.

[0058] In one embodiment, a second column 31 is further included, and the distance measuring device 3 is installed on the second column 31.

[0059] Specifically, the second column 31 is arranged at an interval from the first column 2, maintaining a certain distance. A detector is installed on the second column 31.

[0060] The distance measuring device 3 is installed behind the detector. The distance measuring device 3 uses laser ranging to measure the height of the detector from the ground and transmits the measurement data to the controller 11.

[0061] Working principle: The device is powered on, the emergency stop button is lifted, the switch button is pressed to start the device. The distance measuring device 3 measures the height of the detector from the ground and transmits the measurement data to the controller 11. Through program processing and calculation, the driving device 12 is controlled to adjust the up and down movement of the irradiation window of the lead curtain mechanism 22.

[0062] The specific operation process is as follows: The DC motor drives the speed reducer. The speed reducer 14 drives the main sprocket 241 through the output shaft. The main sprocket 241 drives the driven sprocket 242 through the chain 243. The driven sprocket 242 drives the synchronous belt 253 through the driving main shaft. The synchronous belt 253 drives the mounting plate 221 through the first synchronous connecting piece 2431 and the second synchronous connecting piece 2432, so that the lead curtain mechanism 22 moves up and down. A controller 11 and a DC motor are installed on the bottom plate 15 to control and drive the lead curtain mechanism 22 to move up and down. The limit device 23 selects a groove type photoelectric sensor to detect and limit the position limit of the up and down movement of the lead curtain mechanism 22.

[0063] In the current market, similar applications of automatic protective screens achieve the automatic following function by identifying the position of the DR device tube through a camera. Its installation is limited by distance limitations and surrounding environmental light factors (the distance between the camera and the tube and the surrounding light will affect its performance operation). The purpose of the present utility model is to provide a medical automatic X-ray protective screen for the existing protective screen. The laser feedback signal is sent through the ranging device 3 to realize the automatic adjustment of the window position, avoiding the distance limitation between the camera and the DR tube and the influence of surrounding light factors on its performance operation. The installation of this device is not affected by distance limitations and surrounding environmental light factors through the feedback signal of the ranging device 3. The ranging device 3 measures the height of the DR device detector from the ground and transmits the measurement data to the controller 11. After being processed and calculated by the controller 11, the driving device 12 is controlled to control the irradiation window to automatically follow the movement of the tube, and the up and down movement of the irradiation window is automatically adjusted, so that the automatic adjustment of the window position and the automatic following function can be realized, making the irradiated part of the patient more accurate and safer. It is not only beneficial to the protection of the human body, reducing the secondary harm of radiation to the patient's body, but also can absorb excess light to avoid interfering with the inspection results; the laser ranging has a fast measurement speed and high measurement accuracy, reducing the equipment adjustment time, thereby shortening the filming time, improving the work efficiency, and saving labor costs.

[0064] The above is only the preferred specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application, according to the technical solution and inventive concept of this application, makes equivalent substitutions or changes, and should be covered by the protection scope of this application. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to this application.

Claims

1. A medical automatic radiation protection screen, comprising: A base, inside which a controller, a driving device, a coupling and a speed reducer are provided. The speed reducer is connected between the coupling and the driving device, and the controller is electrically connected to the driving device and the speed reducer respectively; A first upright column, fixedly arranged on the base. Inside the first upright column, a transmission mechanism, a lead curtain mechanism and a limiting device are arranged. The transmission mechanism is linked with the coupling, the transmission mechanism is connected with the lead curtain mechanism, the limiting device is installed inside the first upright column, and the lead curtain mechanism moves within the range defined by the limiting device. The limiting device is electrically connected to the controller; A ranging device, arranged at an interval from the first upright column, and electrically connected to the controller.

2. The medical automatic radiation protection screen according to claim 1, characterized in that, The transmission mechanism includes a first transmission device and a second transmission device. The first transmission device includes a main sprocket, a slave sprocket and a chain wound around the main sprocket and the slave sprocket. The second transmission device includes a driving wheel, a driven wheel and a synchronous belt wound between the driving wheel and the driven wheel. The main sprocket is linked with the coupling, the slave sprocket is linked with the driving wheel, and the driven wheel is installed at the top of the first upright column.

3. The medical automatic ray protection screen according to claim 2, characterized in that, A counterweight block is arranged on the synchronous belt, and a counterweight pulley is arranged on the counterweight block. The counterweight pulley moves relatively on the inner wall of the first upright column.

4. The medical automatic radiation protection screen according to claim 1, characterized in that, The lead curtain mechanism includes a mounting plate, a first lead curtain device and a second lead curtain device. The first lead curtain device and the second lead curtain device are installed on the mounting plate, and the first lead curtain device is located above the second lead curtain.

5. The medical automatic ray protection screen according to claim 4, characterized in that, Multiple rubber-coated bearings are arranged on three surfaces of the mounting plate, and the rubber-coated bearings are in contact with the first upright column.

6. The medical automatic ray protection screen according to claim 5, wherein: A first synchronous connecting piece and a second synchronous connecting piece are arranged on the synchronous belt. The first synchronous connecting piece is located above the second synchronous connecting piece, and the first synchronous connecting piece and the second synchronous connecting piece are fixedly connected to the mounting plate.

7. A medical automatic radiation protection screen according to claim 1, characterized in that, The limiting device includes a first limiting piece and a second limiting piece. The first limiting piece is located above the second limiting piece.

8. A medical automatic radiation protection screen according to claim 1, characterized in that, A control panel is installed on the outer side of the first upright column. An emergency stop button, a manual button, a raise button, a lower button, a power-on button and a power-off button are arranged on the control panel. The emergency stop button, the manual button, the raise button, the lower button, the power-on button and the power-off button are electrically connected to the controller.

9. The medical automatic ray protection screen according to claim 1, characterized in that, A number of universal moving casters are arranged under the base.

10. A medical automatic radiation protection screen according to claim 1, characterized in that, It further includes a second upright column, and the ranging device is installed on the second upright column.

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