DR chest radiograph protection device

Abstract

The DR chest radiograph protection device comprises an upper lead plate, a lower lead plate, a left stand column, a right stand column, a first stepping motor, a second stepping motor, a first lead screw, a second lead screw, a first nut, a second nut, an infrared emission module, an infrared receiving and control module and a power module. Wherein the left stand column and the right stand column are oppositely arranged at an interval, and mounting grooves are formed in the opposite surfaces of the left stand column and the right stand column; the first stepping motor is arranged at the upper end of the left stand column. The first lead screw is vertically arranged in the mounting groove of the left stand column, the upper end of the first lead screw penetrates out of the mounting groove and is connected with a rotating shaft of the first stepping motor, and the lower end of the first lead screw is rotationally connected with the bottom wall of the mounting groove. The second stepping motor is arranged at the upper end of the right stand column; the second lead screw is vertically arranged in the mounting groove of the right stand column. The height of the upper lead plate and the height of the lower lead plate can be adjusted remotely instead of manual operation, the workload of medical staff is relieved, and close-range contact between a patient and the medical staff is avoided.

Description

Technical Field

[0001] The invention relates to a protective device, in particular to a DR chest X-ray protective device. Background Art

[0002] At present, X-ray machines are widely used in medical institutions, and they play a great role in the diagnosis of patients' conditions. X-ray machines use the property of radiation that can penetrate the human body, and with the help of peripheral circuits and devices, they provide doctors with clear medical imaging data for further diagnosis and confirmation. However, radiation has a radiation effect on the human body. While providing convenience for doctors to diagnose, it also causes some unnecessary damage to patients.

[0003] In clinical practice, when patients are given X-ray examinations, their entire body is exposed to the radiation area, and non-examined areas are inevitably exposed to radiation, which is especially harmful to glands such as the thyroid gland and gonads.

[0004] In order to solve the above problems, lead plates are used for protection in clinical practice. The lead plates are divided into upper lead plates and lower lead plates, which are used to protect the thyroid gland and gonads respectively. However, due to the different heights of patients, medical staff basically have to manually adjust the height of the upper and lower lead plates before the examination to meet the needs of patients of different heights. This increases the workload of medical staff to a certain extent, and the close contact between patients and medical staff can easily cause infection. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a DR chest X-ray protection device, which can remotely adjust the height of the upper and lower lead plates instead of manually, thereby reducing the workload of medical staff and avoiding close contact between patients and medical staff.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A DR chest X-ray protection device comprises an upper lead plate and a lower lead plate; its distinguishing feature is that the protection device also comprises a left column, a right column, a first stepper motor, a second stepper motor, a first screw rod, a second screw rod, a first nut, a second nut, an infrared transmitting module, an infrared receiving and control module and a power supply module; wherein the left column and the right column are opposite to each other and arranged at intervals, and the opposite surfaces of the left column and the right column are provided with mounting grooves; the first stepper motor is arranged at the upper end of the left column; the first screw rod is vertically arranged in the mounting groove of the left column, its upper end passes through the outside of the mounting groove and is connected to the rotating shaft of the first stepper motor, and the lower end is rotatably connected to the bottom wall of the mounting groove; the second stepper motor is arranged at the upper end of the right column; the second screw rod is vertically arranged in the mounting groove of the right column, its upper end passes through the outside of the mounting groove and is connected to the rotating shaft of the second stepper motor, and the lower end is rotatably connected to the bottom wall of the mounting groove The upper lead plate and the lower lead plate are arranged between the left column and the right column, and the upper lead plate is located above the lower lead plate; the first nut is installed on the first screw rod, and after the first screw rod rotates, the first nut moves up and down along the first screw rod, and the side wall of the first nut is connected to one side wall of the upper lead plate, and the other side wall of the upper lead plate is slidably connected to the right column; the second nut is installed on the second screw rod, and after the second screw rod rotates, the second nut moves up and down along the second screw rod, and the side wall of the second nut is connected to one side wall of the lower lead plate, and the other side wall of the lower lead plate is slidably connected to the left column; the infrared transmitting module is used to transmit infrared rays; the output end of the infrared receiving and control module is electrically connected to the input end of the first stepper motor and the second stepper motor respectively, for receiving the infrared rays of the infrared transmitting module, and controlling the first stepper motor and the second stepper motor to rotate forward or reverse; the power supply module is used to provide working voltage.

[0008] The beneficial effects of the present invention are:

[0009] The present invention provides a DR chest film protection device. When in use, the protection device is placed between the transmitter and the detector of the X-ray machine, and the patient stands behind the upper lead plate and the lower lead plate. The medical staff can hold the infrared transmitting module in hand to transmit infrared rays to the infrared receiving and control module. After receiving the infrared rays, the infrared receiving and control module controls the first stepper motor and the second stepper motor to rotate forward or reverse. At this time, the first nut and the second nut will move on the first screw rod and the second screw rod, and the upper and lower lead plates move with the first nut and the second nut respectively, so as to achieve the purpose of adjusting the height of the upper lead plate and the lower lead plate, and then it can be suitable for patients of different heights. Compared with the prior art, the protection device can replace the medical staff to manually adjust the height of the upper and lower lead plates, reduce the workload of the medical staff, and improve the convenience of work; and through infrared rays, the medical staff can remotely control the movement of the upper and lower lead plates, avoid close contact between the medical staff and the patients, and reduce the risk of infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0011] Figure 2 is an exploded view of an embodiment of the present invention.

[0012] Figure 3 It is a front view of the left column and the right column of the embodiment of the present invention.

[0013] Figure 4 It is a principle block diagram of an embodiment of the present invention.

[0014] Figure 5 4 is a circuit diagram of an infrared transmitting module according to an embodiment of the present invention.

[0015] Figure 6 It is a circuit connection diagram of an infrared receiving and control module and two stepping motors according to an embodiment of the present invention.

[0016] Figure 7 1 is a circuit diagram of a pressure sensor and a single chip microcomputer according to an embodiment of the present invention.

[0017] The numbers in the figure are: 1. left column; 2. right column; 3. first stepper motor; 4. second stepper motor; 5. upper lead plate; 6. lower lead plate; 7. first screw rod; 8. second screw rod; 9. first nut; 10. second nut; 11. infrared transmitting module; 111. housing; 112. infrared transmitting tube; 113. first button; 12. mounting slot; 13. infrared receiving and control module; 131. infrared receiver; 132. first drive circuit; 133. second drive circuit; 134. third drive circuit; 135. fourth drive circuit; 14. first slide rail; 15. second slide rail; 16. slider; 17. box; 18. second button; 19. single chip microcomputer; 20. pressure sensor. DETAILED DESCRIPTION

[0018] The present invention is described below in conjunction with the accompanying drawings. The specific implementation methods described herein are only used to illustrate and explain the present invention and are not used to limit the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solution of the present invention by ordinary technicians in this field should fall within the protection scope of the present invention.

[0019] like Figures 1 to 7 As shown, the DR chest X-ray protection device of this embodiment includes a left column 1, a right column 2, a first stepper motor 3, a second stepper motor 4, an upper lead plate 5, a lower lead plate 6, a first screw rod 7, a second screw rod 8, a first nut 9, a second nut 10, an infrared transmitting module 11, an infrared receiving and control module 13 and a power module.

[0020] The left column 1 and the right column 2 are arranged opposite to each other and spaced apart, and mounting grooves 12 are arranged on the opposite surfaces of the left column 1 and the right column 2 .

[0021] The first stepper motor 3 is arranged at the upper end of the left column 1 .

[0022] The first screw rod 7 is vertically arranged in the mounting groove 12 of the left column 1 , with its upper end passing out of the mounting groove 12 and connected to the rotating shaft of the first stepper motor 3 , and its lower end being rotatably connected to the bottom wall of the mounting groove 12 .

[0023] The second stepping motor 4 is arranged at the upper end of the right column 2 .

[0024] The second screw rod 8 is vertically arranged in the mounting groove 12 of the right column 2 , with its upper end passing out of the mounting groove 12 and connected to the rotating shaft of the second stepping motor 4 , and its lower end being rotatably connected to the bottom wall of the mounting groove 12 .

[0025] like Figure 1 As shown, the rotating shafts of the first stepper motor 3 and the second stepper motor 4 of this embodiment are connected to the ends of the first screw rod 7 and the second screw rod 8 through belts and pulleys, and bearings are provided at the upper and lower ends of the mounting grooves 12 of the left column 1 and the right column 2. Both ends of the first screw rod 7 and the second screw rod 8 are connected to the bearings to facilitate the rotation of the two screw rods.

[0026] The upper lead plate 5 and the lower lead plate 6 are arranged between the left column 1 and the right column 2 , and the upper lead plate 5 is located above the lower lead plate 6 .

[0027] The first nut 9 is installed on the first screw rod 7. After the first screw rod 7 rotates, the first nut 9 moves up and down along the first screw rod 7. The side wall of the first nut 9 is connected to one side wall of the upper lead plate 5, and the other side wall of the upper lead plate 5 is slidably connected to the right column 2.

[0028] The second nut 10 is installed on the second screw rod 8. After the second screw rod 8 rotates, the second nut 10 moves up and down along the second screw rod 8. The side wall of the second nut 10 is connected to one side wall of the lower lead plate 6, and the other side wall of the lower lead plate 6 is slidably connected to the left column 1.

[0029] The side wall of the upper lead plate 5 is slidably connected to the right column 2, and the side wall of the lower lead plate 6 is slidably connected to the left column 1 in the following manner: a first slide rail 14 is arranged on both sides of the first screw rod 7 in the installation groove 12 of the left column 1, and a second slide rail 15 is arranged on both sides of the second screw rod 8 in the installation groove of the right column 2; sliders 16 embedded in the first slide rail 14 and the second slide rail 15 are arranged on both sides of the upper lead plate 5 and the lower lead plate 6. The provision of the slider 16 and the slide rail can make the movement of the upper lead plate 5 and the lower lead plate 6 more stable.

[0030] Definition: when the first stepper motor 3 and the second stepper motor 4 rotate forward, the first nut 9 and the second nut 10 move upward along the first screw rod 7 and the second screw rod 8 respectively, at this time, the upper lead plate 5 and the lower lead plate 6 both move upward; when the second stepper motor 3 and the second stepper motor 4 rotate reversely, the first nut 9 and the second nut 10 move downward along the first screw rod 7 and the second screw rod 8 respectively, at this time, the upper lead plate 5 and the lower lead plate 6 both move downward.

[0031] The infrared emitting module 11 is used to emit infrared rays. The output end of the infrared receiving and controlling module 13 is electrically connected to the input end of the first stepper motor 3 and the second stepper motor 4, respectively, to receive the infrared rays of the infrared emitting module 11 and control the first stepper motor 3 and the second stepper motor 4 to rotate forward or reverse. The power supply module is used to provide working voltage.

[0032] The infrared emitting module 11 of the present embodiment includes a housing 111 , an infrared encoding chip, a transistor Q1 , a transistor Q2 , an infrared emitting tube 112 , a battery and five first buttons 113 . Among them, the infrared coding chip, transistor Q1, transistor Q2 and battery are arranged in the shell 111, the infrared emitting tube 112 and five first buttons 113 are all arranged on the surface of the shell 111, the input end of the infrared coding chip is electrically connected to the five first buttons 113 respectively, and the output end is electrically connected to the base of the transistor Q1, the collector and emitter of the transistor Q1 are electrically connected to the negative electrode of the infrared emitting tube 112 and the base of the transistor Q2 respectively; the collector and emitter of the transistor Q2 are electrically connected to the negative electrode and the GND end of the infrared emitting tube 112 respectively; the positive electrode of the infrared emitting tube 112 is electrically connected to the positive electrode of the battery; the five first buttons 113 are used to input control instructions to the infrared coding chip, and the infrared coding chip generates corresponding infrared coding signals according to the control instructions, and controls the infrared emitting tube 112 to emit infrared corresponding to the infrared coding signals; the negative electrode of the battery is connected to the GND end. The infrared encoding chip of this embodiment adopts the HS5104 chip, the infrared emitting tube 112 is represented by D10 in the circuit, and the five first buttons 113 are represented by K1, K2, K3, K4 and K5 in the circuit respectively. The five first buttons 113 are respectively used to control the first stepper motor 3 to rotate forward, the first stepper motor 3 to rotate reversely, the second stepper motor 4 to rotate forward, the second stepper motor 4 to rotate reversely and the two stepper motors to stop. When different first buttons 113 are pressed, the infrared encoding chip generates different infrared coding signals. For example, pressing K1 generates the code "001", and pressing K2 generates the code "010". The infrared coding signal is sent from the DO pin of the infrared coding chip and triggers the transistors Q1 and Q2 to be turned on. At this time, the infrared emitting tube 112 is turned on and emits infrared corresponding to the infrared coding signal.

[0033] The infrared receiving and controlling module 13 includes an infrared receiver 131 , an infrared decoding chip, a first driving circuit 132 , a second driving circuit 133 , a third driving circuit 134 and a fourth driving circuit 135 .

[0034] The infrared receiver 131 is used to receive infrared rays emitted by the infrared emitting tube 112, and its output end is electrically connected to the input end (DI pin) of the infrared decoding chip. The output end of the infrared decoding chip is electrically connected to the input ends of the first driving circuit 132, the second driving circuit 133, the third driving circuit 134 and the fourth driving circuit 135 respectively, the output ends of the first driving circuit 132 and the second driving circuit 133 are electrically connected to the first stepping motor 3, and the output ends of the third driving circuit 134 and the fourth driving circuit 135 are electrically connected to the second stepping motor 4.

[0035] After the infrared receiver 135 (represented by IRM in the circuit) receives the infrared ray, the signal is sent to the infrared decoding chip, the infrared decoding chip decodes the code corresponding to the infrared ray, and outputs the corresponding control instruction, and controls the first drive circuit 132 and the second drive circuit 133 to drive the first stepper motor 3 to rotate forward and reverse according to the control instruction, and controls the third drive circuit 134 and the fourth drive circuit 135 to drive the second stepper motor 4 to rotate forward and reverse respectively.

[0036] In this embodiment, the first driving circuit 132 includes a relay KA1 and a thyristor T1 , and the second driving circuit 133 includes a relay KA2 and a thyristor T2 .

[0037] Among them, the positive pole of the coil of relay KA1 is electrically connected to the positive pole of the power module, the negative pole of the coil is electrically connected to the anode of the thyristor T1, the normally open end of the relay KA1 is electrically connected to the positive pole of the power module, the normally closed end is electrically connected to the negative pole of the power module, and the common end is electrically connected to the positive pole of the power supply end of the first stepper motor 3; the cathode of the thyristor T1 is electrically connected to the GND end, and the control electrode is electrically connected to the output end (O1 pin) of the infrared encoding chip.

[0038] The positive pole of the coil of relay KA2 is electrically connected to the positive pole of the power module, the negative pole of the coil is electrically connected to the anode of the thyristor T2, the normally open end of relay KA2 is electrically connected to the positive pole of the power module, the normally closed end is electrically connected to the negative pole of the power module, and the common end is electrically connected to the negative pole of the power supply end of the first stepper motor 3; the cathode of the thyristor T2 is electrically connected to the GND end, and the control electrode is electrically connected to the output end (O2 pin) of the infrared encoding chip.

[0039] The third driving circuit 134 of this embodiment includes a relay KA3 and a thyristor T4, and the fourth driving circuit 135 includes a relay KA4 and a thyristor T6.

[0040] Among them, the positive pole of the coil of relay KA3 is electrically connected to the positive pole of the power module, the negative pole of the coil is electrically connected to the anode of the thyristor T4, the normally open end of the relay KA3 is electrically connected to the positive pole of the power module, the normally closed end is electrically connected to the negative pole of the power module, and the common end is electrically connected to the positive pole of the power supply end of the second stepper motor 4; the cathode of the thyristor T4 is electrically connected to the GND end, and the control electrode is electrically connected to the output end (O3 pin) of the infrared encoding chip.

[0041] The positive pole of the coil of relay KA4 is electrically connected to the positive pole of the power module, the negative pole of the coil is electrically connected to the anode of the thyristor T6, the normally open end of relay KA4 is electrically connected to the positive pole of the power module, the normally closed end is electrically connected to the negative pole of the power module, and the common end is electrically connected to the negative pole of the power supply end of the second stepper motor 4; the cathode of the thyristor T6 is electrically connected to the GND end, and the control electrode is electrically connected to the output end (O4 pin) of the infrared encoding chip.

[0042] In the circuit, the first stepper motor 3 and the second stepper motor 4 are represented by M1 and M2 respectively.

[0043] Combined with the circuit structure of the infrared transmitting module 11 and the infrared receiving and control module 13, when the first button K1 is pressed, the infrared encoding chip generates a corresponding infrared coding signal, the infrared transmitting tube 112 transmits infrared corresponding to the coding signal to the infrared receiver 131, and the infrared decoding chip decodes the infrared coding signal. After decoding, its O1 pin outputs a trigger signal. At this time, the thyristor T1 is turned on, then the relay KA1 coil is conductive, and its normally open end is turned on. At the same time, the thyristor T2 is not turned on, and its normally closed end is closed. At this time, the current flows from the positive pole of the power supply module through the normally open end and the common end of the relay KA1 to the positive pole of the power supply end of the first stepper motor 3, and then from the negative pole of the power supply end of the first stepper motor 3 to the negative pole of the power supply module through the common end and the normally closed end of the relay KA2. At this time, the first stepper motor 3 is forwardly conductive, and it is defined that at this time, the first stepper motor 3 rotates forward. When the first button K2 is pressed, the infrared encoding chip generates a corresponding infrared encoding signal, the infrared transmitting tube 112 transmits infrared rays corresponding to the encoding signal to the infrared receiver 131, and the infrared decoding chip decodes the infrared encoding signal. After decoding, its O2 pin outputs a trigger signal. At this time, the thyristor T2 is turned on, so the relay KA2 coil is conductive, and its normally open end is turned on. At the same time, the thyristor T1 is not turned on, and its normally closed end is closed. At this time, the current flows from the negative electrode of the power module through the normally closed end and the common end of the relay KA1 to the positive electrode of the power supply end of the first stepper motor 3, and then from the negative electrode of the power supply end of the first stepper motor 3 to the positive electrode of the power module through the common end and the normally open end of the relay KA2. At this time, the first stepper motor 3 is reversely conducted, and it is defined that at this time, the first stepper motor 3 is reversed. The forward and reverse rotation of the second stepper motor 4 is the same as the circuit principle of the first stepper motor 3. When the first button K5 is pressed, the infrared decoding chip controls the O1, O2, O3, and O4 pins after decoding to not output a trigger signal. At this time, the two stepper motors stop rotating.

[0044] The protective device also includes a box 17 and five second buttons 18. The box 17 is arranged at the bottom of the left column 1. The infrared receiving and control module 13 and the power module are arranged in the box 17. The infrared receiver 131 is arranged on the outside of the box 17. The five second buttons 18 are all arranged on the surface of the box 17 and are respectively electrically connected to the input end of the infrared coding chip. The five second buttons 18 are used to input instructions to the infrared coding chip. The infrared coding chip controls the first drive circuit 132, the second drive circuit 133, the third drive circuit 134 and the fourth drive circuit 135 to work according to the corresponding instructions. The functions of the five second buttons 18 correspond to the functions of the five first buttons 113 respectively. In the circuit, they are represented by K21, K22, K23, K24 and K25 respectively. The five second buttons 18 are respectively used to control the first stepper motor 3 to rotate forward, the first stepper motor 3 to rotate reversely, the second stepper motor 4 to rotate forward, the second stepper motor 4 to rotate reversely and the two stepper motors to stop. In this way, not only can the rotation of the two stepper motors be remotely controlled, but the user can also control the rotation of the two stepper motors beside the protective device, thereby improving practicality.

[0045] In addition, the protection device also includes a single chip microcomputer 19, a pressure sensor 20, a thyristor T3 and a thyristor T5. Among them, the pressure sensor 20 is arranged on the upper end surface of the lower lead plate 5, and is used to generate a pressure signal when the lower end surface of the upper lead plate 5 contacts the upper end surface of the lower lead plate 6. The output end of the pressure sensor 20 is electrically connected to the input end of the single chip microcomputer 19. The single chip microcomputer of this embodiment adopts an AT89C51 single chip microcomputer, which is arranged in the box 17. The thyristor T3 is arranged between the negative pole of the coil of the relay KA2 and the anode of the thyristor T2, the anode of the thyristor T3 is electrically connected to the negative pole of the coil of the relay KA2, the cathode of the thyristor T3 is electrically connected to the anode of the thyristor T2, and the control pole is electrically connected to the output end (P2.0 pin) of the single chip microcomputer 19; the thyristor T5 is arranged between the cathode of the thyristor T4 and the GND end, the anode of the thyristor is electrically connected to the cathode of the thyristor T4, the cathode of the thyristor is electrically connected to the GND end, and the control pole is electrically connected to the output end of the single chip microcomputer 19. Specifically in this embodiment, the pressure sensor 20 is arranged on the upper end surface of the slider 16 of the lower lead plate 6, the lower end surface of the slider 16 of the upper lead plate 5 is flush with the lower end surface of the upper lead plate 5, and the upper end surface of the slider 16 of the lower lead plate 6 is flush with the upper end surface of the lower lead plate 6. When the lower end surface of the upper lead plate 5 contacts the upper end surface of the lower lead plate 6, the slider 16 thereon will also contact and cause the pressure sensor 20 to generate pressure, and the pressure sensor 20 sends the detection signal to the single-chip microcomputer 19, and the single-chip microcomputer 19 controls the P2.0 pin and the P Pin 2.6 does not send out a trigger signal. At this time, thyristor T3 and thyristor T5 are not conducting. At this time, even if the first button K2 (or the second button K22) and the first button K3 (or the second button K23) are pressed, the first stepper motor 3 cannot be reversely conducted, the second stepper motor 4 cannot be forwardly conducted, the upper lead plate 5 cannot move downward, and the lower lead plate 6 cannot move upward, thus avoiding the collision between the upper lead plate 5 and the lower lead plate 6 and causing damage to the two stepper motors, thereby protecting the two stepper motors. When the pressure sensor 20 does not detect a pressure signal, the P2.0 pin and the P2.6 pin of the single-chip microcomputer 19 both send out a trigger signal, and the thyristor T3 and the thyristor T5 are in a conducting state, which does not affect the forward and reverse rotation of the two stepper motors.

[0046] When the present invention is in use, the protective device is placed between the transmitter and the detector of the X-ray machine, and the patient stands behind the upper lead plate 5 and the lower lead plate 6. The medical staff can hold the infrared transmitting module 11 and transmit infrared rays to the infrared receiving and control module 13. After receiving the infrared rays, the infrared receiving and control module 13 decodes the infrared rays and controls the first stepper motor 3 and the second stepper motor 4 to rotate forward or reverse accordingly. At this time, the first nut 9 and the second nut 10 will move on the first screw rod 7 and the second screw rod 8, and the upper lead plate 5 and the lower lead plate 6 move with the first nut 9 and the second nut 10 respectively, so as to achieve the purpose of adjusting the height of the upper lead plate 5 and the lower lead plate 6, and then it can be suitable for patients of different heights. Compared with the prior art, the protective device can replace the medical staff to manually adjust the height of the upper lead plate 5 and the lower lead plate 6, reduce the workload of the medical staff, and improve the convenience of work; and through infrared rays, the medical staff can remotely control the movement of the upper lead plate 5 and the lower lead plate 6, avoid close contact between the medical staff and the patient, and reduce the risk of infection.

Claims

1. A DR chest X-ray protection device, comprising an upper lead plate and a lower lead plate; characterized in that: It also includes a left column, a right column, a first stepping motor, a second stepping motor, a first screw rod, a second screw rod, a first screw nut, a second screw nut, an infrared transmitting module, an infrared receiving and control module and a power module; wherein, The left column and the right column are opposite to each other and are spaced apart, and mounting grooves are arranged on the opposite surfaces of the left column and the right column; The first stepper motor is arranged at the upper end of the left column; The first screw rod is vertically arranged in the installation slot of the left column, the upper end of which passes through the installation slot and is connected to the rotating shaft of the first stepper motor, and the lower end is rotatably connected to the bottom wall of the installation slot; The second stepper motor is arranged at the upper end of the right column; The second screw rod is vertically arranged in the installation slot of the right column, the upper end of which passes through the installation slot and is connected to the rotating shaft of the second stepping motor, and the lower end is rotatably connected to the bottom wall of the installation slot; The upper lead plate and the lower lead plate are arranged between the left column and the right column, and the upper lead plate is located above the lower lead plate; The first nut is installed on the first screw rod. After the first screw rod rotates, the first nut moves up and down along the first screw rod. The side wall of the first nut is connected to one side wall of the upper lead plate, and the other side wall of the upper lead plate is slidably connected to the right column. The second nut is installed on the second screw rod. After the second screw rod rotates, the second nut moves up and down along the second screw rod. The side wall of the second nut is connected to one side wall of the lower lead plate, and the other side wall of the lower lead plate is slidably connected to the left column. The infrared transmitting module is used to transmit infrared rays; The output end of the infrared receiving and controlling module is electrically connected to the input end of the first stepper motor and the second stepper motor respectively, and is used to receive the infrared rays from the infrared transmitting module and control the first stepper motor and the second stepper motor to rotate forward or reverse; The power module is used to provide operating voltage.

2. The DR chest X-ray protection device according to claim 1, characterized in that: A first slide rail is arranged on both sides of the first screw rod in the installation groove of the left column, and a second slide rail is arranged on both sides of the second screw rod in the installation groove of the right column; sliders embedded in the first slide rail and the second slide rail are arranged on both sides of the upper lead plate and the lower lead plate.

3. The DR chest X-ray protection device according to claim 1, characterized in that: The infrared emitting module comprises a shell, an infrared coding chip, a triode Q1, a triode Q2, an infrared emitting tube, a battery and five first buttons; the infrared coding chip, the triode Q1, the triode Q2 and the battery are arranged in the shell, the infrared emitting tube and the five first buttons are arranged on the surface of the shell, the input end of the infrared coding chip is electrically connected to the five first buttons respectively, the output end is electrically connected to the base of the triode Q1, the collector and the emitter of the triode Q1 are electrically connected to the negative electrode of the infrared emitting tube and the base of the triode Q2 respectively; the collector and the emitter of the triode Q2 are electrically connected to the negative electrode and the GND end of the infrared emitting tube respectively; the positive electrode of the infrared emitting tube is electrically connected to the positive electrode of the battery; the five first buttons are used to input control instructions to the infrared coding chip, the infrared coding chip generates corresponding infrared coding signals according to the control instructions, and controls the infrared emitting tube to emit infrared corresponding to the infrared coding signals.

4. The DR chest X-ray protection device according to claim 3, characterized in that: The infrared receiving and control module includes an infrared receiver, an infrared decoding chip, a first drive circuit, a second drive circuit, a third drive circuit and a fourth drive circuit; the infrared receiver is used to receive infrared rays emitted by the infrared transmitting tube, and its output end is electrically connected to the input end of the infrared decoding chip; the output end of the infrared decoding chip is electrically connected to the input ends of the first drive circuit, the second drive circuit, the third drive circuit and the fourth drive circuit respectively, the output ends of the first drive circuit and the second drive circuit are electrically connected to the first stepper motor, and the output ends of the third drive circuit and the fourth drive circuit are electrically connected to the second stepper motor; the infrared decoding chip is used to decode infrared rays and output corresponding control instructions, and according to the control instructions, the first drive circuit and the second drive circuit are respectively controlled to drive the first stepper motor to rotate forward and reverse, and the third drive circuit and the fourth circuit are respectively controlled to drive the second stepper motor to rotate forward and reverse.

5. The DR chest X-ray protection device according to claim 4, characterized in that: The first drive circuit includes a relay KA1 and a thyristor T1; the second drive circuit includes a relay KA2 and a thyristor T2; The positive pole of the coil of the relay KA1 is electrically connected to the positive pole of the power module, the negative pole of the coil is electrically connected to the anode of the thyristor T1, the normally open end of the relay KA1 is electrically connected to the positive pole of the power module, the normally closed end is electrically connected to the negative pole of the power module, and the common end is electrically connected to the positive pole of the power supply end of the first stepper motor; the cathode of the thyristor T1 is electrically connected to the GND end, and the control electrode is electrically connected to the output end of the infrared encoding chip; The positive pole of the coil of the relay KA2 is electrically connected to the positive pole of the power module, the negative pole of the coil is electrically connected to the anode of the thyristor T2, the normally open end of the relay KA2 is electrically connected to the positive pole of the power module, the normally closed end is electrically connected to the negative pole of the power module, and the common end is electrically connected to the negative pole of the power supply end of the first stepper motor; the cathode of the thyristor T2 is electrically connected to the GND end, and the control electrode is electrically connected to the output end of the infrared encoding chip.

6. The DR chest X-ray protection device according to claim 5, characterized in that: The third drive circuit includes a relay KA3 and a thyristor T4; the fourth drive circuit includes a relay KA4 and a thyristor T6; The positive pole of the coil of the relay KA3 is electrically connected to the positive pole of the power module, the negative pole of the coil is electrically connected to the anode of the thyristor T4, the normally open end of the relay KA3 is electrically connected to the positive pole of the power module, the normally closed end is electrically connected to the negative pole of the power module, and the common end is electrically connected to the positive pole of the power supply end of the second stepper motor; the cathode of the thyristor T4 is electrically connected to the GND end, and the control electrode is electrically connected to the output end of the infrared encoding chip; The positive pole of the coil of the relay KA4 is electrically connected to the positive pole of the power module, the negative pole of the coil is electrically connected to the anode of the thyristor T6, the normally open end of the relay KA4 is electrically connected to the positive pole of the power module, the normally closed end is electrically connected to the negative pole of the power module, and the common end is electrically connected to the negative pole of the power supply end of the second stepper motor; the cathode of the thyristor T6 is electrically connected to the GND end, and the control electrode is electrically connected to the output end of the infrared encoding chip.

7. The DR chest X-ray protection device according to claim 6, characterized in that: It also includes five second buttons, which are electrically connected to the input end of the infrared encoding chip respectively. The five second buttons are used to input instructions to the infrared encoding chip, and the infrared encoding chip controls the first drive circuit, the second drive circuit, the third drive circuit and the fourth drive circuit to work according to the corresponding instructions.

8. The DR chest X-ray protection device according to claim 6, characterized in that: It also includes a single-chip computer, a pressure sensor, a thyristor T3 and a thyristor T5; the pressure sensor is arranged on the upper end surface of the lower lead plate, and is used to generate a pressure signal when the lower end surface of the upper lead plate contacts the upper end surface of the lower lead plate; the output end of the pressure sensor is electrically connected to the input end of the single-chip computer; the thyristor T3 is arranged between the negative pole of the coil of the relay KA2 and the anode of the thyristor T2, the anode of the thyristor T3 is electrically connected to the negative pole of the coil of the relay KA2, its cathode is electrically connected to the anode of the thyristor T2, and its control electrode is electrically connected to the output end of the single-chip computer; the thyristor T5 is arranged between the cathode of the thyristor T4 and the GND end, the anode of the thyristor is electrically connected to the cathode of the thyristor T4, its cathode is electrically connected to the GND end, and its control electrode is electrically connected to the output end of the single-chip computer.

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