X-ray machine easy to carry

Abstract

The invention relates to the technical field of medical instruments, and discloses an X-ray machine easy to carry, the X-ray machine comprises a host and a flat panel detector, the host comprises a shell, an X-ray generator is fixedly mounted in the shell, a lens protective cover is fixedly mounted on the surface of the shell, a center shaft is fixedly mounted in the lens protective cover, and the center shaft is fixedly mounted on the surface of the shell. A transmission sleeve is slidably mounted on the surface of the center shaft, an adjusting mechanism is arranged in the lens protective cover, the transmission sleeve is controlled by the adjusting mechanism to slide back and forth along the surface of the center shaft, a protective disc is rotatably mounted on the surface of the transmission sleeve, and a plurality of irradiation windows are formed in the surface of the protective disc. By changing the distance between the protection disc and the X-ray generator, the irradiation range of the X-ray generator can be adjusted according to detection requirements, or different irradiation windows can be switched, so that the irradiation shape of X-rays to body tissues can be changed, the radiation of the X-rays to normal body tissues can be reduced, and the safety of the X-ray machine can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular 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 to perform X-ray imaging of limbs or other body parts with low attenuation for clinical diagnosis. In order to solve the problem that the X-ray machine is too large and inconvenient to carry, in the prior art, a patent document with the announcement number CN115919337A discloses a portable X-ray machine, which includes a housing, an X-ray generating device and a beam limiting device. The X-ray generating device is arranged in the housing and is used to generate X-rays. The beam limiting device is arranged protruding from the front surface of the housing and is arranged corresponding to the X-ray generating device. A distance measuring sensor is arranged on the beam limiting device to detect the distance between the X-ray generating device and the photographing target. A display screen for observing the photographing target is arranged on the rear surface of the housing. A filter plate socket is arranged on the lower side of the housing. The filter plate socket is located between the X-ray generating device and the beam limiting device and is used to plug the filter plate. The portable X-ray machine of the invention has a compact structure and is easy to operate, realizes the miniaturization and portability of the X-ray equipment, and can ensure safety, which is conducive to large-scale promotion.

[0003] The detection and imaging range of existing portable X-ray machines is fixed. For example, the detection area of ​​a device with a 100MM diameter imaging range is greatly improved compared to a 50MM diameter device, which can obtain a larger range of images during the inspection process. However, in actual use, different inspection positions require different irradiation areas. An excessively large X-ray irradiation range causes too much normal body tissue to be irradiated by X-rays, resulting in poor safety. Based on this, existing portable X-ray machines have the problem of an unadjustable irradiation range, which needs further improvement. Summary of the invention

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

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an easy-to-carry X-ray machine, comprising a mainframe and a flat-panel detector, the mainframe comprising a shell, an X-ray generator is fixedly installed inside the shell, a lens protective cover is fixedly installed on the surface of the shell, a central axis is fixedly installed inside the lens protective cover, a transmission sleeve is slidably installed on the surface of the central axis, an adjustment mechanism is arranged inside the lens protective cover, the transmission sleeve is controlled to slide back and forth along the surface of the central axis by the adjustment mechanism, a protection plate is rotatably installed on the surface of the transmission sleeve, and a plurality of irradiation windows are opened on the surface of the protection plate; A spur gear shaft is rotatably installed inside the lens protective cover, and a first drive motor is fixedly installed inside the lens protective cover. The first drive motor drives the spur gear shaft to rotate. A tooth groove is provided on the surface of the protective plate. The spur gear shaft and the tooth groove on the surface of the protective plate are meshed for transmission. When the transmission sleeve slides back and forth along the surface of the central axis, the tooth groove on the surface of the protective plate slides linearly along the surface of the spur gear shaft. The distance between the protective plate and the X-ray generator is adjustable, and different irradiation windows can be switched to adjust the irradiation range of the X-ray machine.

[0006] Preferably, the adjustment mechanism includes a second drive motor, and a hexagonal transmission shaft is fixedly installed on the rotating end of the second drive motor. A drive sleeve is provided on the surface sliding sleeve of the transmission shaft, and the drive sleeve is rotatably connected to the inner hole of the transmission sleeve. A plurality of magnets are embedded on the surface of the drive sleeve, and a conductive coil and an excitation coil are respectively embedded inside the transmission sleeve. The central shaft is made of magnetic material. When the excitation coil is energized, a magnetic field that attracts or repels the central shaft is generated, so that the transmission sleeve can slide back and forth along the surface of the central shaft to adjust the distance between the protective disk and the X-ray generator.

[0007] Preferably, a rotating disk is fixedly mounted on the rotating end of the second driving motor, a plurality of beam holes are opened on the surface of the rotating disk, a first return spring is sleeved on the surface of the transmission shaft, two ends of the first return spring respectively press against the ends of the rotating disk and the driving sleeve, a second return spring is sleeved on the surface of the central shaft, two ends of the second return spring respectively press against the ends of the driving sleeve and the central shaft, and the intensity of the X-rays passing through the irradiation window can be adjusted by adjusting the rotation speed of the rotating disk.

[0008] Preferably, the multiple irradiation windows are arranged in a ring array on the end face of the protective disk, and the multiple irradiation windows have different sizes and shapes. By switching different irradiation windows, the irradiation shape of the X-rays on the body tissues is changed, thereby reducing the radiation of X-rays to normal body tissues and improving its safety.

[0009] Preferably, the shell includes a front cover and a rear shell, the lens protective hood is fixedly mounted on the surface of the front cover, a lead protective layer is provided inside the lens protective hood, the materials of the protective disk and the rotating disk are both lead, a lens cover is installed at the end of the lens protective hood, a radiation-proof lead plate and a focusing lens are respectively installed inside the lens cover, and a distance limiting piece is fixedly mounted on the surface of the lens cover.

[0010] A touch screen, a main control board, a fixing bracket and a lithium battery are fixedly installed inside the rear shell, an X-ray generator is fixedly installed on the surface of the fixing bracket, a mounting hole is opened on the inner side of the front cover, and the transmitting end of the X-ray generator extends from the mounting hole to the lens protective cover, a control panel, a power key and a switching key are respectively arranged on the upper side of the rear shell, a PC interface board and a central processing unit are respectively fixedly installed inside the rear shell, and a shooting key is arranged on the surface of the front cover.

[0011] 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, and the interior of the rear shell is respectively fixedly installed with an LED lamp DC power supply board, an LED status board and a light guide plate, and the light guide plate passes through the front cover and extends to the outside of the front cover.

[0012] The present invention has the following beneficial effects: 1. The X-ray machine proposed in the present invention utilizes the principle that X-rays emitted from an X-ray generator attenuate differently when passing through different tissues and organs of a patient's body, and projects the X-rays that pass through the patient and carry sufficient information onto a flat-panel detector to form an image, which is converted into a visible planar grayscale image for clinical diagnosis.

[0013] 2. The X-ray machine proposed in the present invention has a protective plate arranged in the lens protective cover, and the distance between the protective plate and the X-ray generator is adjustable. When the X-rays are irradiated on the protective plate, most of the X-rays are blocked by the protective plate, and a small part of the X-rays pass through the irradiation window and irradiate the patient's body tissue. By increasing the distance between the protective plate and the X-ray generator, the irradiation range of the X-rays passing through the irradiation window to the body tissue is reduced. The irradiation range of the X-ray machine can be adjusted according to detection needs.

[0014] Since there are multiple irradiation windows on the protective plate, and the sizes and shapes of the irradiation windows are different, rotating the protective plate and switching different irradiation windows can not only adjust the irradiation range of the X-ray machine, but also change the irradiation shape of the X-rays to the body tissues, reduce the radiation of the X-rays to normal body tissues, and improve its safety.

[0015] 3. The X-ray machine proposed in the present invention has a rotating disk driven by a second driving motor in a lens protective cover, and a beam hole is provided on the rotating disk. During the rotation of the rotating disk, X-rays can pass through the beam hole and irradiate human tissue. When the rotating disk rotates at a low speed, the number of X-rays passing through the beam hole is small, and when the rotating disk rotates at a high speed, the number of X-rays passing through the beam hole is large. By adjusting the rotating speed of the rotating disk, the intensity of X-rays passing through the irradiation window can be adjusted, thereby avoiding the problem of excessive imaging exposure due to a large irradiation window and insufficient imaging exposure due to a small irradiation window. In addition, the conductive coil and the exciting 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 exciting coil, and the electromagnetic field generated by the exciting coil can absorb or repel the central axis, thereby driving the protective disk to slide left and right along the central axis to adjust the distance between the protective disk and the X-ray generator; When the rotation speed of the rotating disk is increased, the voltage of the excitation coil increases, the force of the excitation coil adsorbing the central axis 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. As the distance between the protective disk and the X-ray generator increases, the irradiation range of the X-rays to the body tissues decreases, but at this time the number of X-rays passing through the beam hole is large, which can improve the clarity of the X-ray imaging and avoid the problem of insufficient exposure due to a small irradiation window. When the design changes the distance between the protective disk and the X-ray generator to adjust the irradiation range, the amount of X-rays passing through the beam hole is controlled by adjusting the rotation speed of the rotating disk to achieve a clear imaging effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the host of the present invention (I); Figure 2 This is a schematic diagram of the three-dimensional structure of the host of the present invention (II); Figure 3 It is a schematic diagram of the three-dimensional structure of the lens protective cover of the present invention; Figure 4 It is a schematic diagram of the top-sectional structure of the lens protective cover of the present invention; Figure 5 This is a schematic diagram of X-rays passing through the lens protective cover; Figure 6 It is a schematic diagram of the three-dimensional structure of the protective disk and the rotating disk; Figure 7 It is a schematic diagram of the top-sectional structure of the protective disk and the rotating disk; Figure 8 It is a schematic diagram of the side structure of the protective plate.

[0017] In the figure: 1 flat panel detector, 2 X-ray generator, 3 lens protection cover, 4 center shaft, 5 transmission sleeve, 6 protection plate, 7 irradiation window, 8 spur gear shaft, 9 first drive motor, 10 transmission shaft, 11 drive sleeve, 12 magnet, 13 conductive coil, 14 excitation coil, 15 rotating plate, 16 light beam hole, 17 first return spring, 18 second return spring, 19 front cover, 20 back cover, 21 lens cover, 22 radiation protection lead plate, 23 focusing lens, 24 distance limiter, 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 key, 35 switch key, 36 PC interface board, 37 central processing unit, 38 shooting key, 39 second drive motor. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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 cannot be understood as a limitation on the present invention.

[0020] Reference Figure 1-8 A portable X-ray machine includes a main unit and a flat panel detector 1. The main unit includes a shell, and an X-ray generator 2 is fixedly installed inside the shell. The shell 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 fixedly installed inside the rear shell 20. The X-ray generator 2 is fixedly installed on the surface of the fixed bracket 27.

[0021] An LED lamp DC power supply board 30 , an LED status board 31 and a light guide plate 32 are fixedly mounted inside the rear housing 20 , respectively. The light guide plate 32 passes through the front cover 19 and extends to the outside of the front cover 19 .

[0022] A control panel 33 , a power key 34 and a switch key 35 are respectively disposed 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 disposed on the surface of the front cover 19 .

[0023] A lens protective cover 3 is fixedly mounted on the surface of the housing, a lens cover 21 is mounted on the end of the lens protective cover 3, a radiation-proof lead plate 22 and a focusing lens 23 are respectively mounted in the lens cover 21, a distance limiting member 24 is fixedly mounted on the surface of the lens cover 21, and a distance detector 29 is fixedly mounted on the end of the lens protective cover 3. The distance detector 29 passes through the lens cover 21 and extends to the outside of the lens cover 21. Figure 1 , Figure 2 As shown, this is a conventional setting of an X-ray machine in the prior art and will not be described in detail here.

[0024] In this embodiment, a central shaft 4 is fixedly installed inside the lens protective cover 3, and 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, and the transmission sleeve 5 is controlled by the adjustment mechanism to slide back and forth along the surface of the central shaft 4. A protective plate 6 is rotatably installed on the surface of the transmission sleeve 5, and a plurality of irradiation windows 7 are opened on the surface of the protective plate 6. The plurality of irradiation windows 7 are arranged in a ring array on the end surface of the protective plate 6. The plurality of irradiation windows 7 have different sizes and shapes, such as Figure 8 As shown, the shape of the illumination window 7 can be determined according to the shape of the detected human body part.

[0025] A spur gear shaft 8 is rotatably installed inside the lens protective cover 3, and a first drive motor 9 is fixedly installed 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 is meshed with the tooth grooves on the surface of the protective plate 6 for transmission. When the transmission sleeve 5 slides back and forth along the surface of the central axis 4, the tooth grooves on the surface of the protective plate 6 slide linearly along the surface of the spur gear shaft 8.

[0026] During use, the distance between the protective plate 6 and the X-ray generator 2 can be adjusted by the adjustment mechanism, or the first drive motor 9 can rotate to drive the protective plate 6 to rotate a certain angle, so that an irradiation window 7 is coaxial with the emission end of the X-ray generator 2. When the X-rays are irradiated on the protective plate 6, most of the X-rays are blocked by the protective plate 6 (refer to Figure 7 ), a small part of the X-rays passes through the irradiation window 7 and irradiates the patient's body tissue. Since the distance between the protective plate 6 and the X-ray generator 2 is adjustable, the distance between the protective plate 6 and the X-ray generator 2 is increased, such as Figure 5 As shown, the dotted arrows are X-rays. The X-rays passing through the irradiation window 7 reduce the irradiation range of body tissues. The irradiation range of the X-ray machine can be adjusted according to the detection needs. Similarly, rotating the angle of the protective plate 6 and selecting the irradiation window 7 of a suitable size can also achieve changing its irradiation range.

[0027] Since there are multiple irradiation windows 7 on the protective plate 6, and the sizes and shapes of the irradiation windows 7 are different, rotating the protective plate 6 and switching different irradiation windows 7 can not only adjust the irradiation range of the X-ray machine, but also change the irradiation shape of the X-rays to the body tissues, reduce the radiation of the X-rays to the normal body tissues, and improve its safety.

[0028] Specifically, the adjustment mechanism includes a second drive motor 39 , a hexagonal transmission shaft 10 is fixedly mounted on the rotating end of the second drive motor 39 , a surface sliding sleeve of the transmission shaft 10 is provided with a drive sleeve 11 , and the drive sleeve 11 is rotatably connected to the inner hole of the transmission sleeve 5 .

[0029] A plurality of magnets 12 are embedded on the surface of the driving sleeve 11 , and a conductive coil 13 and an excitation coil 14 are embedded in 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.

[0030] A rotating disk 15 is fixedly mounted on the rotating end of the second driving motor 39, and a plurality of light beam holes 16 are opened on the surface of the rotating disk 15. A first return spring 17 is sleeved on the surface of the transmission shaft 10, and the two ends of the first return spring 17 are respectively pressed against the ends of the rotating disk 15 and the driving sleeve 11. A second return spring 18 is sleeved on the surface of the central shaft 4, and the two ends of the second return spring 18 are respectively pressed against the ends of the transmission sleeve 5 and the central shaft 4.

[0031] The conductive coil 13 and the excitation coil 14 are electrically connected through an amplifying circuit. When the driving sleeve 11 rotates, the conductive coil 13 cuts the magnetic field of the magnet 12, and the conductive coil 13 generates an electromotive force, which is introduced into the excitation coil 14. The excitation coil 14 generates an electromagnetic force, so that the excitation coil 14 and the central axis 4 attract or repel each other. The 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. The transmission sleeve 5 can be driven to slide back and forth along the surface of the central axis 4 by changing the direction and speed of the second drive motor 39 to adjust the distance between the protective plate 6 and the X-ray generator 2. This is common knowledge in electricity and mechanics and will not be elaborated here.

[0032] In this embodiment, the lens protective cover 3 is fixedly mounted on the surface of the front cover 19, a lead protective layer is arranged inside the lens protective cover 3, the materials of the protective plate 6 and the rotating plate 15 are both made of lead, a mounting hole is opened on the inner side of the front cover 19, the emission end of the X-ray generator 2 extends from the mounting hole to the lens protective cover 3, the rotating plate 15 is kept stationary, and the beam hole 16 and the irradiation window 7 are aligned, the X-rays emitted by the X-ray generator 2 can be emitted from the beam hole 16 and the irradiation window 7, pass through the human body component, and utilize the principle that the X-rays emitted from the X-ray generator 2 have different attenuation when passing through different tissues and organs of the patient's body, the X-rays that pass through the patient and carry sufficient information are projected onto the flat panel detector 1 to form an image, which is converted into a visible planar grayscale image for clinical diagnosis, such as Figure 5 shown.

[0033] It should be noted that the X-ray machine proposed in the present invention has a rotating disk 15 driven to rotate by a second driving motor 39 disposed in the lens protective cover 3, and a beam hole 16 is provided on the rotating disk 15. During the rotation of the rotating disk 15, X-rays can pass through the beam hole 16 and irradiate human tissue. When the rotating speed of the rotating disk 15 is low, the number of X-rays passing through the beam hole 16 is small, and when the rotating speed of the rotating disk 15 is high, the number of X-rays passing through the beam hole 16 is large. By adjusting the rotating speed of the rotating disk 15, the intensity of X-rays passing through the irradiation window 7 can be adjusted to avoid the problem of excessive imaging exposure due to a large irradiation window 7 and insufficient imaging exposure due to a small irradiation window 7. In addition, the conductive coil 13 and the exciting coil 14 are electrically connected, the driving sleeve 11 rotates synchronously with the rotating disk 15, the induced electromotive force generated by the conductive coil 13 is introduced into the exciting coil 14, and the electromagnetic field generated by the exciting coil 14 can attract or repel the central axis 4, thereby driving the protective disk 6 to slide left and right along the central axis 4, and adjusting the distance between the protective disk 6 and the X-ray generator 2; When the rotation speed of the rotating disk 15 is increased, the voltage of the excitation coil 14 is increased, the force of the excitation coil 14 adsorbing the central axis 4 is increased, the transmission sleeve 5 moves and compresses the second return spring 18, and the distance between the protective disk 6 and the X-ray generator 2 can be increased. As the distance between the protective disk 6 and the X-ray generator 2 increases, the irradiation range of the X-rays to the body tissue is reduced, but at this time the number of X-rays passing through the beam hole 16 is large, which can improve the clarity of the X-ray imaging and avoid the problem of insufficient exposure due to the small irradiation window 7. When the design changes the distance between the protective disk 6 and the X-ray generator 2 to adjust the irradiation range, the amount of X-rays passing through the beam hole 16 is controlled by adjusting the rotation speed of the rotating disk 15 to achieve a clear imaging effect.

[0034] X-ray intensity and hardness: a. The method of increasing X-ray intensity 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;

[0036] According to the attenuation law of X-rays, the longer the wavelength of the X-rays, the easier they are to be absorbed. Therefore, if the X-ray intensity is increased by changing the tube voltage, the wavelength of the X-rays will decrease, resulting in increased hardness of the X-rays, which are less likely to be absorbed or blocked, and blurred imaging. In summary, the X-ray machine proposed in the present invention adjusts the irradiation range 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, and controls the number of X-rays passing through the beam hole 16 in a linked manner, thereby improving imaging clarity and preventing the increase in X-ray hardness from damaging human tissue.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by 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 machine 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), 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), the transmission sleeve (5) is controlled by the adjustment mechanism to slide back and forth along the surface of the central shaft (4), a protection 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 protection 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 adjustment mechanism comprises a second drive motor (39), a hexagonal transmission shaft (10) being fixedly mounted on the rotating end of the second drive motor (39), a surface sliding sleeve of the transmission shaft (10) being provided with a drive sleeve (11), and the drive sleeve (11) being rotatably connected to the inner hole of the transmission sleeve (5).

3. The portable X-ray machine according to claim 2, characterized in that: A plurality of magnets (12) are embedded in the surface of the driving sleeve (11), and a conductive coil (13) and an excitation coil (14) are respectively embedded in the interior of the transmission sleeve (5). The central shaft (4) is made of a magnetic material. When the excitation coil (14) is energized, a magnetic field that attracts or repels the central shaft (4) is generated, thereby enabling the transmission sleeve (5) to slide back and forth along the surface of the central shaft (4).

4. The portable X-ray machine according to claim 3, characterized in that: A rotating disk (15) is fixedly mounted on the rotating end of the second drive motor (39), and a plurality of light beam holes (16) are provided on the surface of the rotating disk (15). A first return spring (17) is sleeved on the surface of the transmission shaft (10), and two ends of the first return spring (17) respectively press against the ends of the rotating disk (15) and the drive sleeve (11). A second return spring (18) is sleeved on the surface of the central shaft (4), and two ends of the second return spring (18) respectively press against the ends of the transmission sleeve (5) and the central shaft (4).

5. The portable X-ray machine according to claim 4, 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.

6. The portable X-ray machine according to claim 5, 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).

7. The portable X-ray machine according to claim 6, 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).

8. The portable X-ray machine according to claim 7, 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).

9. The portable X-ray machine according to claim 8, 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).

10. The portable X-ray machine according to claim 9, 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).

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