A portable X-ray machine

Abstract

The present invention relates to the technical field of medical devices, and discloses an easily portable X-ray machine, which includes a main unit and a flat panel detector. The main unit includes a housing, an X-ray generator is fixedly installed inside the housing, a lens protective cover is fixedly installed on the surface of the housing, a central shaft is fixedly installed inside the lens protective cover, a transmission sleeve is slidably installed on the surface of the central shaft, an adjustment mechanism is arranged inside the lens protective cover, and the transmission sleeve is controlled by the adjustment mechanism to reciprocate along the surface of the central shaft. A protective disc is rotatably installed on the surface of the transmission sleeve, and a plurality of irradiation windows are opened on the surface of the protective disc. By changing the distance between the protective disc and the X-ray generator, the irradiation range of the X-ray machine can be adjusted according to the detection needs. Or, by switching different irradiation windows, the irradiation shape of the X-ray on the body tissue can be changed, reducing the radiation of the X-ray to the normal body tissue and improving its safety.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an X-ray machine that is easy to carry. Background Art

[0002] An X-ray machine is a device that can generate X-rays and is used for X-ray imaging of limbs or other body tissue parts with a relatively small attenuation degree for clinical diagnosis. To solve the problem that the overall volume of the X-ray machine is too large and inconvenient to carry, in the prior art, a patent document with the publication number CN115919337A discloses a portable X-ray machine. The portable X-ray machine includes a housing, an X-ray generating device, and a collimating device. The X-ray generating device is arranged in the housing and is used for generating X-rays. The collimating device protrudes from the front side surface of the housing and is arranged corresponding to the X-ray generating device. A ranging sensor is arranged on the collimating device and is used for detecting the distance from the shooting target. A display screen for observing the shooting target is arranged on the rear side surface of the housing. A filter plate socket is arranged on the lower side surface of the housing, and the filter plate socket is located between the X-ray generating device and the collimating device and is used for inserting a filter plate. The portable X-ray machine of this invention has a compact structure and simple operation, realizes the miniaturization and portability of X-ray equipment, and can ensure safety, which is conducive to large-scale popularization.

[0003] The detection imaging range of the existing portable X-ray machine is fixed. For example, for a device with an imaging range of 100MM in diameter, its detection area is greatly increased compared with a device with a diameter of 50MM. This can obtain a larger range of images during the inspection process. However, in the actual use process, the areas to be irradiated at different inspection positions are different. An overly large X-ray irradiation range causes too much normal body tissue to be irradiated by X-rays, resulting in poor safety. Based on this, the existing portable X-ray machine has the problem that the irradiation range is not adjustable and needs to be further improved. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawback that the irradiation range of the existing portable X-ray machine is not adjustable, and to propose an X-ray machine that is easy to carry.

[0005] To achieve the above purpose, the present invention adopts the following technical scheme: An X-ray machine that is easy to carry, including a main unit and a flat panel detector. The main unit includes a housing, an X-ray generator is fixedly installed inside the housing, a lens protective cover is fixedly installed on the surface of the housing, a central shaft is fixedly installed inside the lens protective cover, a transmission sleeve is slidably installed on the surface of the central shaft, an adjustment mechanism is arranged inside the lens protective cover, and the transmission sleeve is controlled to reciprocally slide along the surface of the central shaft through the adjustment mechanism. A protective disc is rotatably installed on the surface of the transmission sleeve, and a plurality of irradiation windows are opened on the surface of the protective disc;

[0006] A straight tooth shaft is rotatably installed inside the lens protective cover. A first drive motor is fixedly installed inside the lens protective cover. The first drive motor drives the straight tooth shaft to rotate. Tooth grooves are formed on the surface of the protective disc. The straight tooth shaft meshes with the tooth grooves on the surface of the protective disc for transmission. When the transmission sleeve reciprocally slides along the surface of the central shaft, the tooth grooves on the surface of the protective disc linearly slide along the surface of the straight tooth shaft. The distance between the protective disc and the X-ray generator is adjustable, and different irradiation windows can be switched to adjust the irradiation range of the X-ray machine.

[0007] Preferably, the adjusting mechanism includes a second drive motor. A hexagonal transmission shaft is fixedly installed at the rotating end of the second drive motor. A drive sleeve is slidably sleeved on the surface of the transmission shaft. The drive sleeve is rotatably connected to the inner hole of the transmission sleeve. Several magnets are embedded on the surface of the drive sleeve. A conductive coil and an excitation coil are respectively embedded inside the transmission sleeve. The central shaft is made of magnetic material. After the excitation coil is energized, a magnetic field that attracts or repels the central shaft is generated to enable the transmission sleeve to reciprocally slide along the surface of the central shaft, for adjusting the distance between the protective disc and the X-ray generator.

[0008] Preferably, a rotating disc is fixedly installed at the rotating end of the second drive motor. Multiple light beam holes are formed on the surface of the rotating disc. A first return spring is sleeved on the surface of the transmission shaft. The two ends of the first return spring respectively abut against the rotating disc and the end of the drive sleeve. A second return spring is sleeved on the surface of the central shaft. The two ends of the second return spring respectively abut against the transmission sleeve and the end of the central shaft. The intensity of the X-ray passing through the irradiation window can be adjusted by adjusting the rotation speed of the rotating disc.

[0009] Preferably, the multiple irradiation windows are arranged in a circular array on the end face of the protective disc. The sizes and shapes of the multiple irradiation windows are different. By switching different irradiation windows, the irradiation shape of the X-ray on the body tissue is changed, reducing the radiation of the X-ray to the normal body tissue and improving its safety.

[0010] Preferably, the housing includes a front cover and a rear shell. The lens protective cover is fixedly installed on the surface of the front cover. A lead protective layer is provided inside the lens protective cover. The materials of the protective disc and the rotating disc are both lead. A lens cover is installed at the end of the lens protective cover. A radiation-proof lead plate and a focusing lens are respectively installed inside the lens cover. A distance limiting member is fixedly installed on the surface of the lens cover.

[0011] A touch screen, a main control board, a fixing bracket and a lithium battery are respectively fixedly installed inside the rear shell. The X-ray generator is fixedly installed on the surface of the fixing bracket. An installation hole is provided inside the front cover. The emitting end of the X-ray generator extends into the lens protective cover through the installation hole. A control panel, a power-on key and a switching key are respectively provided on the upper side of the rear shell. A PC interface board and a central processor are respectively fixedly installed inside the rear shell. A shooting key is provided on the surface of the front cover.

[0012] Preferably, a distance detector is fixedly installed at the end of the lens protective cover. The distance detector passes through the lens cover and extends to the outside of the lens cover. Inside the rear shell, a DC power supply board for LED lights, an LED status board, and a light guide plate are fixedly installed respectively. The light guide plate passes through the front cover and extends to the outside of the front cover.

[0013] The present invention has the following beneficial effects:

[0014] 1. For the X-ray machine proposed by the present invention, by using the principle that when X-rays emitted from the X-ray generator pass through different tissues and organs of the patient's body, the attenuation of the rays is different, the image formed by the X-rays passing through the patient and carrying sufficient information projected onto the flat panel detector is converted into a visible planar grayscale image for clinical diagnosis.

[0015] 2. For the X-ray machine proposed by the present invention, by arranging a protection disk inside the lens protective cover, and the distance between the protection disk and the X-ray generator is adjustable. When the X-rays irradiate on the protection disk, most of the X-rays are blocked by the protection disk, and a small part of the X-rays pass through the irradiation window and then irradiate on the patient's body tissues. By increasing the distance between the protection disk and the X-ray generator, the irradiation range of the X-rays passing through the irradiation window on the body tissues decreases. The irradiation range of the X-ray machine can be adjusted according to the detection needs.

[0016] Since there are multiple irradiation windows on the protection disk, and the sizes and shapes of the irradiation windows are different, by rotating the protection disk to switch different irradiation windows, not only can the irradiation range of the X-ray machine be adjusted, but also the irradiation shape of the X-rays on the body tissues can be changed, reducing the radiation of the X-rays to the normal body tissues and improving its safety.

[0017] 3. For the X-ray machine proposed by the present invention, by arranging a rotating disk driven by a second driving motor to rotate inside the lens protective cover, and light beam holes are provided on the rotating disk. During the rotation of the rotating disk, the X-rays can pass through the light beam holes and then irradiate the human tissues. When the rotation speed of the rotating disk is low, the number of X-ray photons passing through the light beam holes is small. When the rotation speed of the rotating disk is high, the number of X-ray photons passing through the light beam holes is large. By adjusting the rotation speed of the rotating disk, the intensity of the X-rays passing through the irradiation window can be adjusted, avoiding the problems of excessive imaging exposure when the irradiation window is large and insufficient imaging exposure when the irradiation window is small.

[0018] In addition, the conductive coil and the excitation coil are electrically connected. The driving sleeve rotates synchronously with the rotating disk. The induced electromotive force generated by the conductive coil is introduced into the excitation coil. The electromagnetic field generated by the excitation coil can adsorb or repel the central axis, thereby driving the protection disk to slide left and right along the central axis to adjust the distance between the protection disk and the X-ray generator.

[0019] When increasing the rotation speed of the rotating disk, the voltage of the excitation coil increases, the acting force of the excitation coil adsorbing the central shaft increases, the transmission sleeve moves and compresses the second return spring, and the distance between the protective disk and the X-ray generator can be increased. Since the distance between the protective disk and the X-ray generator increases, the irradiation range of the X-ray on the body tissue decreases. However, at this time, the number of X-ray photons passing through the beam aperture is large, which can improve the clarity of the X-ray irradiation imaging and avoid the problem of insufficient exposure due to a small irradiation window. When this design changes the distance between the protective disk and the X-ray generator to adjust the irradiation range, it controls the amount of X-ray photons passing through the beam aperture by adjusting the rotation speed of the rotating disk, achieving the effect of clear imaging. Brief Description of the Drawings

[0020] Figure 1 Fig. (1) is a three-dimensional structural schematic diagram of the main body of the present invention;

[0021] Figure 2 Fig. (2) is a three-dimensional structural schematic diagram of the main body of the present invention;

[0022] Figure 3 Fig. (3) is a three-dimensional structural schematic diagram of the lens protective cover of the present invention;

[0023] Figure 4 Fig. (4) is a front-sectional structural schematic diagram of the lens protective cover of the present invention;

[0024] Figure 5 Fig. (5) is a schematic diagram of X-rays passing through the lens protective cover;

[0025] Figure 6 Fig. (6) is a three-dimensional structural schematic diagram of the protective disk and the rotating disk;

[0026] Figure 7 Fig. (7) is a front-sectional structural schematic diagram of the protective disk and the rotating disk;

[0027] Figure 8 Fig. (8) is a side-view structural schematic diagram of the protective disk.

[0028] In the figures: 1 flat panel detector, 2 X-ray generator, 3 lens protective cover, 4 central shaft, 5 transmission sleeve, 6 protective disk, 7 irradiation window, 8 straight tooth shaft, 9 first drive motor, 10 transmission shaft, 11 drive sleeve, 12 magnet, 13 conductive coil, 14 excitation coil, 15 rotating disk, 16 beam aperture, 17 first return spring, 18 second return spring, 19 front cover, 20 rear housing, 21 lens cover, 22 radiation-proof lead plate, 23 focusing lens, 24 distance limiting member, 25 touch screen, 26 main control board, 27 fixing bracket, 28 lithium battery, 29 distance detector, 30 LED lamp DC power supply board, 31 LED status board, 32 light guide plate, 33 control panel, 34 power on / off key, 35 switching key, 36 PC interface board, 37 central processing unit, 38 shooting key, 39 second drive motor. Detailed Embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0031] Refer to Figure 1-8 , an easily portable X-ray machine, including a host and a flat panel detector 1. The host includes a housing, and an X-ray generator 2 is fixedly installed inside the housing. The housing includes a front cover 19 and a rear shell 20. A touch screen 25, a main control board 26, a fixed bracket 27, and a lithium battery 28 are respectively fixedly installed inside the rear shell 20. The X-ray generator 2 is fixedly installed on the surface of the fixed bracket 27.

[0032] An LED lamp DC power supply board 30, an LED status board 31, and a light guide plate 32 are respectively fixedly installed inside the rear shell 20. The light guide plate 32 passes through the front cover 19 and extends to the outside of the front cover 19.

[0033] A control panel 33, a power-on key 34, and a switching key 35 are respectively arranged on the upper side of the rear shell 20. A PC interface board 36 and a central processing unit 37 are respectively fixedly installed inside the rear shell 20. A shooting key 38 is arranged on the surface of the front cover 19.

[0034] A lens protection cover 3 is fixedly installed on the surface of the housing. A lens cap 21 is installed at the end of the lens protection cover 3. A radiation-proof lead plate 22 and a focusing lens 23 are respectively installed inside the lens cap 21. A distance limiting member 24 is fixedly installed on the surface of the lens cap 21. A distance detector 29 is fixedly installed at the end of the lens protection cover 3. The distance detector 29 passes through the lens cap 21 and extends to the outside of the lens cap 21. As Figure 1 , Figure 2 shown, it belongs to the conventional setting of the X-ray machine in the prior art and will not be elaborated here.

[0035] In this embodiment, a central shaft 4 is fixedly installed inside the lens protective cover 3. A transmission sleeve 5 is slidably installed on the surface of the central shaft 4. An adjustment mechanism is provided inside the lens protective cover 3. The transmission sleeve 5 is controlled by the adjustment mechanism to reciprocally slide along the surface of the central shaft 4. A protective disc 6 is rotatably installed on the surface of the transmission sleeve 5. A plurality of irradiation windows 7 are formed on the surface of the protective disc 6. The plurality of irradiation windows 7 are arranged in a circular array on the end face of the protective disc 6. The sizes and shapes of the plurality of irradiation windows 7 are different. For example, Figure 8 As shown, the shape of the irradiation window 7 can be determined according to the shape of the detected human body part.

[0036] A straight gear shaft 8 is rotatably installed inside the lens protective cover 3. A first driving motor 9 is fixedly installed inside the lens protective cover 3. The first driving motor 9 drives the straight gear shaft 8 to rotate. A tooth groove is formed on the surface of the protective disc 6. The straight gear shaft 8 is in meshing transmission with the tooth groove on the surface of the protective disc 6. When the transmission sleeve 5 reciprocally slides along the surface of the central shaft 4, the tooth groove on the surface of the protective disc 6 linearly slides along the surface of the straight gear shaft 8.

[0037] During use, the distance between the protective disc 6 and the X-ray generator 2 can be adjusted through the adjustment mechanism. Alternatively, the first driving motor 9 rotates to drive the protective disc 6 to rotate by a certain angle, so that an irradiation window 7 is coaxial with the emission end of the X-ray generator 2. When the X-ray irradiates on the protective disc 6, most of the X-rays are blocked by the protective disc 6 (refer to Figure 7 ), and a small part of the X-rays passes through the irradiation window 7 and then irradiates the patient's body tissue. Since the distance between the protective disc 6 and the X-ray generator 2 is adjustable, increasing the distance between the protective disc 6 and the X-ray generator 2, as shown in Figure 5 As shown, the dotted arrow is the X-ray. The irradiation range of the X-ray passing through the irradiation window 7 on the body tissue is reduced. The irradiation range of the X-ray machine can be adjusted according to the detection needs. Similarly, by rotating the protective disc 6 by an angle and selecting an irradiation window 7 of a suitable size, the irradiation range can also be changed.

[0038] Since there are a plurality of irradiation windows 7 on the protective disc 6 and the sizes and shapes of the irradiation windows 7 are different, by rotating the protective disc 6 to switch different irradiation windows 7, not only can the irradiation range of the X-ray machine be adjusted, but also the irradiation shape of the X-ray on the body tissue can be changed, reducing the radiation of the X-ray to the normal body tissue and improving its safety.

[0039] Specifically, the adjustment mechanism includes a second driving motor 39. A hexagonal transmission shaft 10 is fixedly installed at the rotating end of the second driving motor 39. A driving sleeve 11 is slidably sleeved on the surface of the transmission shaft 10. The driving sleeve 11 is rotatably connected to the inner hole of the transmission sleeve 5.

[0040] The surface of the drive sleeve 11 is embedded with a number of magnets 12. Inside the transmission sleeve 5, a conductive coil 13 and an excitation coil 14 are respectively embedded. The central shaft 4 is made of magnetic material. After the excitation coil 14 is energized, a magnetic field that attracts or repels the central shaft 4 is generated.

[0041] The rotating end of the second drive motor 39 is fixedly installed with a rotating disk 15. A plurality of light beam holes 16 are formed on the surface of the rotating disk 15. The surface of the transmission shaft 10 is sleeved with a first return spring 17. The two ends of the first return spring 17 respectively abut against the end of the rotating disk 15 and the end of the drive sleeve 11. The surface of the central shaft 4 is sleeved with a second return spring 18. The two ends of the second return spring 18 respectively abut against the end of the transmission sleeve 5 and the end of the central shaft 4.

[0042] The conductive coil 13 and the excitation coil 14 are electrically connected through an amplifier circuit. When the drive sleeve 11 rotates, the conductive coil 13 cuts the magnetic field of the magnet 12, and an electromotive force is generated in the conductive coil 13. This electromotive force is introduced into the excitation coil 14, and the excitation coil 14 generates an electromagnetic force, causing the excitation coil 14 to attract or repel the central shaft 4. This electromagnetic force pushes and pulls the transmission sleeve 5 to move, and reaches a force balance with the first return spring 17 and the second return spring 18. By changing the rotation direction and speed of the second drive motor 39, the transmission sleeve 5 can be driven to slide back and forth along the surface of the central shaft 4, so as to adjust the distance between the protective disk 6 and the X-ray generator 2. This belongs to the well-known common sense of electricity and mechanics and will not be elaborated here.

[0043] In this embodiment, the lens protective cover 3 is fixedly installed on the surface of the front cover 19. A lead protective layer is provided inside the lens protective cover 3. The materials of the protective disk 6 and the rotating disk 15 are both lead. An installation hole is provided inside the front cover 19. The emission end of the X-ray generator 2 extends into the lens protective cover 3 through the installation hole. Keeping the rotating disk 15 stationary and aligning the light beam holes 16 with the irradiation window 7, the X-rays emitted by the X-ray generator 2 can be emitted through the light beam holes 16 and the irradiation window 7, pass through the human body component, and utilize the principle that when the X-rays emitted from the X-ray generator 2 pass through different tissues and organs of the patient, the attenuation of the rays is different. The image formed by projecting the X-rays that have passed through the patient and carry sufficient information onto the flat panel detector 1 is converted into a visible planar gray-scale image for clinical diagnosis, as Figure 5 shown.

[0044] It should be noted that for the X-ray machine proposed by the present invention, by providing a rotating disk 15 driven by a second drive motor 39 inside the lens protective cover 3, a light beam hole 16 is provided on the rotating disk 15. During the rotation of the rotating disk 15, X-rays can pass through the light beam hole 16 and then irradiate the human tissue. When the rotation speed of the rotating disk 15 is low, the number of X-photons passing through the light beam hole 16 is small. When the rotation speed of the rotating disk 15 is high, the number of X-photons passing through the light beam hole 16 is large. By adjusting the rotation speed of the rotating disk 15, the intensity of the X-rays passing through the irradiation window 7 can be adjusted, avoiding the problems of excessive imaging exposure when the irradiation window 7 is large and insufficient imaging exposure when the irradiation window 7 is small.

[0045] In addition, the conductive coil 13 and the excitation coil 14 are electrically connected. The drive sleeve 11 rotates synchronously with the rotating disk 15. The induced electromotive force generated by the conductive coil 13 is introduced into the excitation coil 14. The electromagnetic field generated by the excitation coil 14 can adsorb or repel the central axis 4, thereby driving the protective disk 6 to slide left and right along the central axis 4 to adjust the distance between the protective disk 6 and the X-ray generator 2.

[0046] When the rotation speed of the rotating disk 15 is increased, the voltage of the excitation coil 14 increases, and the acting force of the excitation coil 14 to adsorb the central axis 4 increases. The transmission sleeve 5 moves and compresses the second return spring 18, which can increase the distance between the protective disk 6 and the X-ray generator 2. Since the distance between the protective disk 6 and the X-ray generator 2 increases, the irradiation range of the X-rays on the body tissue decreases. However, at this time, the number of X-photons passing through the light beam hole 16 is large, which can improve the clarity of the X-ray irradiation imaging and avoid the problem of insufficient exposure due to the small irradiation window 7. When adjusting the irradiation range by changing the distance between the protective disk 6 and the X-ray generator 2, this design controls the amount of X-photons passing through the light beam hole 16 through the rotation speed of the rotating disk 15 in a linked manner to achieve the effect of clear imaging.

[0047] Intensity and hardness of X-rays: a. The method of increasing the intensity of X-rays is generally to increase the tube voltage or tube current in the X-ray generator 2; b. X-rays are classified according to hardness as shown in the following table;

[0048]

[0049] According to the attenuation law of X-rays, the longer the wavelength of X-rays, the easier it is to be absorbed. Then, if the tube voltage is changed to increase the intensity of X-rays, the wavelength of the X-rays decreases, resulting in an increase in the hardness of the X-rays, making them less likely to be absorbed and blocked, and the imaging is blurred. To sum up, for the X-ray machine proposed by the present invention, by adjusting the rotation speed of the rotating disk 15 to change the distance between the protective disk 6 and the X-ray generator 2, the irradiation range is adjusted, and the number of X-photons passing through the light beam hole 16 is controlled in a linked manner to improve the imaging clarity, and it can also effectively prevent the increase in the hardness of X-rays from harming human tissues.

[0050] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. An easily portable X-ray machine, comprising a main unit and a flat panel detector (1), characterized in that: The main unit comprises a shell, an X-ray generator (2) is fixedly mounted inside the shell, a lens protective cover (3) is fixedly mounted on the surface of the shell, a central shaft (4) is fixedly mounted inside the lens protective cover (3), and a transmission sleeve (5) is slidably mounted on the surface of the central shaft (4); An adjustment mechanism is arranged inside the lens protective cover (3), and the adjustment mechanism comprises a second drive motor (39). A hexagonal transmission shaft (10) is fixedly mounted on the rotating end of the second drive motor (39). A drive sleeve (11) is provided on the surface of the transmission shaft (10). The drive sleeve (11) is rotatably connected to the inner hole of the transmission sleeve (5). A plurality of magnets (12) are embedded on the surface of the drive sleeve (11). A conductive coil (13) and an excitation coil (14) are respectively embedded inside the transmission sleeve (5). The central shaft (4) is made of magnetic material. When the excitation coil (14) is energized, a magnetic field that attracts or repels the central shaft (4) is generated, so that the transmission sleeve (5) can slide back and forth along the surface of the central shaft (4). A rotating disk (15) is fixedly mounted on the rotating end of the second driving motor (39), a plurality of light beam holes (16) are formed on the surface of the rotating disk (15), a first return spring (17) is sleeved on the surface of the transmission shaft (10), two ends of the first return spring (17) respectively press against the ends of the rotating disk (15) and the driving sleeve (11), and a second return spring (18) is sleeved on the surface of the central shaft (4), two ends of the second return spring (18) respectively press against the ends of the transmission sleeve (5) and the central shaft (4); The transmission sleeve (5) is controlled by an adjustment mechanism to slide back and forth along the surface of the central axis (4); a protective plate (6) is rotatably mounted on the surface of the transmission sleeve (5); and a plurality of irradiation windows (7) are provided on the surface of the protective plate (6); A spur gear shaft (8) is rotatably mounted inside the lens protective cover (3), and a first drive motor (9) is fixedly mounted inside the lens protective cover (3). The first drive motor (9) drives the spur gear shaft (8) to rotate. A tooth groove is provided on the surface of the protective plate (6). The spur gear shaft (8) meshes with the tooth groove on the surface of the protective plate (6) for transmission. When the transmission sleeve (5) reciprocates along the surface of the central shaft (4), the tooth groove on the surface of the protective plate (6) slides linearly along the surface of the spur gear shaft (8).

2. The portable X-ray machine according to claim 1, characterized in that: The plurality of irradiation windows (7) are arranged in a ring-shaped array on the end surface of the protection plate (6), and the plurality of irradiation windows (7) have different sizes and shapes.

3. The portable X-ray machine according to claim 2, characterized in that: The housing comprises a front cover (19) and a rear shell (20); a lens protective cover (3) is fixedly mounted on the surface of the front cover (19); a lead protective layer is provided inside the lens protective cover (3); the protective disk (6) and the rotating disk (15) are both made of lead; a lens cover (21) is mounted at the end of the lens protective cover (3); a radiation-proof lead plate (22) and a focusing lens (23) are respectively mounted inside the lens cover (21); and a distance limiting member (24) is fixedly mounted on the surface of the lens cover (21).

4. The portable X-ray machine according to claim 3, characterized in that: A touch screen (25), a main control panel (26), a fixing bracket (27) and a lithium battery (28) are fixedly mounted inside the rear housing (20), the X-ray generator (2) is fixedly mounted on the surface of the fixing bracket (27), a mounting hole is provided on the inner side of the front cover (19), and an emitting end of the X-ray generator (2) extends from the mounting hole into the lens protective cover (3).

5. The portable X-ray machine according to claim 4, characterized in that: A distance detector (29) is fixedly mounted on the end of the lens protective cover (3), and the distance detector (29) passes through the lens cover (21) and extends to the outside of the lens cover (21).

6. The portable X-ray machine according to claim 5, characterized in that: An LED lamp DC power supply board (30), an LED status board (31) and a light guide plate (32) are respectively fixedly mounted inside the rear shell (20); the light guide plate (32) passes through the front cover (19) and extends to the outside of the front cover (19).

7. The portable X-ray machine according to claim 6, characterized in that: A control panel (33), a power key (34) and a switch key (35) are respectively arranged on the upper side of the rear shell (20), a PC interface board (36) and a central processing unit (37) are respectively fixedly installed inside the rear shell (20), and a shooting key (38) is arranged on the surface of the front cover (19).

Images