Carrying device for X-ray tube and mobile digital X-ray imaging device

Abstract

The present invention provides a bearing device for an X-ray tube and a mobile digital X-ray imaging device. Among them, a shock-absorbing unit is additionally provided on the bearing device of the X-ray tube. The shock-absorbing unit is used to relieve the shock generated by the X-ray tube due to the impact force. Further, the shock-absorbing unit includes a first elastic member and a second elastic member; the setting direction of the first elastic member is parallel to the plane where the support unit is located and forms an inclination angle with the plane where the bottom plate is located; the setting direction of the second elastic member is perpendicular to the plane where the support unit is located. Therefore, in three-dimensional space, the first elastic member can simultaneously achieve shock absorption in two dimensions, and the second elastic member can achieve shock absorption in another dimension, so as to be able to synchronously constrain the three translational degrees of freedom of the X-ray tube, achieve the dynamic balance of the X-ray tube, extend the service life of the X-ray tube, and improve the use safety of the mobile digital X-ray imaging device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a bearing device for an X-ray tube and a mobile digital X-ray imaging device. Background Art

[0002] A mobile digital X-ray imaging device (digital radiography, DR) is an advanced medical device formed by the combination of computer digital image processing technology and X-ray radiation technology. The mobile digital X-ray imaging device is widely used clinically because of its small radiation dose, high image quality, high disease detection rate and high diagnostic accuracy during the shooting process.

[0003] Among them, an X-ray tube can generate X-rays for generating fluoroscopic images and is an important component of a mobile digital X-ray imaging device. Most of the existing X-ray tubes are fixed to the X-ray tube base by means of a hoop, and then the bracket and the housing are connected by bolts. However, due to the large weight of the X-ray tube and its bearing components, and the good overall rigidity of the mobile digital X-ray imaging device, the vibration generated when the lifting column impacts the limit will bring a certain impact to the X-ray tube end. Especially, the vibration generated when moving over the threshold will be transmitted to the X-ray tube to form a large impact, which easily causes the bearing at the connection of the X-ray tube to be damaged, resulting in the detachment of the rotating anode of the X-ray tube and affecting the use safety. To this end, the commonly used method in the prior art is to use a sheave balancer to achieve shock absorption. That is, the X-ray tube is connected to the balancer by a steel wire rope. When the column is lifted or lowered, the energy is absorbed by the spring expansion and contraction on the balancer, and the torque balance of the X-ray tube at any position within the movable range is maintained, so as to achieve shock absorption.

[0004] However, in actual use, the position of the steel wire rope connecting the X-ray tube and the balancer will change along the axial direction of the sheave, resulting in the steel wire rope not always being perpendicular to the horizontal plane. Therefore, the friction between the steel wire rope and the sheave groove will increase, reducing the reliability and service life. The existing solution is to change the sheave shaft into a lead screw, and the sheave is fixedly connected to the nut. When lifting or lowering, the sheave can move along the axial direction together. However, such a structure is relatively complex, and the cost of the lead screw pair is relatively high. In addition to the sheave balancer solution, friction pads can also be added at both ends of the X-ray tube and the support frame to balance the position of the X-ray tube and play a certain shock absorption role, but the effect is not obvious. The friction pad addition solution is only suitable for fine-tuning the position of the X-ray tube to improve the projection effect, and cannot achieve a good shock absorption effect for large-amplitude impacts.

[0005] Therefore, a new device is needed to effectively alleviate the problem of X-ray tube oscillation. Summary of the Invention

[0006] The object of the present invention is to provide an X-ray tube carrying device and a mobile digital X-ray imaging device to solve at least one of the following problems: how to alleviate the vibration caused by the impact force on the tube, how to improve the safety of the mobile digital X-ray imaging device, and how to extend the service life of the tube.

[0007] In order to solve the above technical problems, the present invention provides a bearing device for an X-ray tube, comprising a base plate (10), a supporting unit (20) and a shock absorbing unit (30); wherein,

[0008] The support unit (20) is arranged on the base plate (10) and is arranged close to the X-ray tube;

[0009] The shock absorbing unit (30) is arranged on the supporting unit (20), and comprises a first elastic member (301) and a second elastic member (302); the arrangement direction of the first elastic member (301) is parallel to the plane where the supporting unit (20) is located, and forms an inclination angle with the plane where the bottom plate (10) is located; the arrangement direction of the second elastic member (302) is perpendicular to the plane where the supporting unit (20) is located.

[0010] Optionally, in the supporting device for the X-ray tube, both opposite ends of the first elastic member (301) are installed in the supporting unit (20), and the inclination angle between the setting direction of the first elastic member (301) and the plane where the base plate (10) is located is 45 degrees.

[0011] Optionally, in the X-ray tube supporting device, both opposite ends of the second elastic member (302) are installed in the supporting unit (20), and one end thereof extends toward the X-ray tube and is spaced apart from the X-ray tube.

[0012] Optionally, in the supporting device for the X-ray tube, the supporting unit (20) includes a first supporting assembly (201) and a second supporting assembly (202); the first supporting assembly (201) and the second supporting assembly (202) are located on the same side of the base plate (10) and are fixedly arranged at two opposite ends of the base plate (10); wherein the first supporting assembly (201) and the second supporting assembly (202) are respectively located at two opposite ends of the X-ray tube and are spaced apart from the X-ray tube.

[0013] Optionally, in the X-ray tube carrying device, at least one first elastic member (301) and at least one second elastic member (302) are provided on each of the first supporting assembly (201) and the second supporting assembly (202).

[0014] Optionally, in the bearing device of the X-ray tube, two or more of the first elastic members (301) are provided on the first support assembly (201) and / or the second support assembly (202), and an included angle exists between the setting directions of at least some of the first elastic members (301).

[0015] Optionally, in the bearing device of the X-ray tube, two of the first elastic members (301) and two of the second elastic members (302) are provided on both the first support assembly (201) and the second support assembly (202); wherein, the setting directions of the two first elastic members (301) located on the first support assembly (201) and / or the second support assembly (202) are perpendicular to each other.

[0016] Optionally, in the bearing device of the X-ray tube, both the first elastic member (301) and the second elastic member (302) include a metal column and a rubber ring sleeved on the metal column; threads are provided at opposite ends of the metal column for threaded connection with the support unit.

[0017] Optionally, in the bearing device of the X-ray tube, the bearing device of the X-ray tube further includes a support frame (40) and a support shaft (50); opposite ends of the support frame (40) are located at opposite ends of the bottom plate (10), and the support shaft (50) penetrates through an end of the support frame (40) and is disposed in the support unit (20) to fix the support frame (40) to the support unit (20).

[0018] Based on the same inventive concept, the present invention further provides a mobile digital X-ray imaging device, including the bearing device of the X-ray tube and an X-ray tube, and the X-ray tube is installed on the bearing device of the X-ray tube.

[0019] In summary, the present invention provides a bearing device of an X-ray tube and a mobile digital X-ray imaging device. Among them, a shock-absorbing unit is additionally provided in the bearing device of the X-ray tube. The shock-absorbing unit is used to relieve the shock generated by the X-ray tube due to impact force. Further, the shock-absorbing unit includes a first elastic member and a second elastic member; the setting direction of the first elastic member is parallel to the plane where the support unit is located and forms an inclination angle with the plane where the bottom plate is located; the setting direction of the second elastic member is perpendicular to the plane where the support unit is located. Therefore, in three-dimensional space, the first elastic member can simultaneously achieve shock absorption in two of the three dimensions, and the second elastic member can achieve shock absorption in the other dimension, so as to be able to synchronously constrain the three translational degrees of freedom of the X-ray tube, achieve the dynamic balance of the X-ray tube, extend the service life of the X-ray tube, and improve the use safety of the mobile digital X-ray imaging device. Description of the Drawings

[0020] Figure 1 is a schematic structural view of the bearing device of the X-ray tube in an embodiment of the present invention;

[0021] Figure 2 is a schematic view of the structure and connection relationship of the support unit and the shock absorption unit in an embodiment of the present invention;

[0022] Figure 3 is a partial cross-sectional view of the Y-Z plane of the bearing device of the X-ray tube in an embodiment of the present invention:

[0023] Among them, the reference numerals are:

[0024] 10 - bottom plate; 101 - first hole;

[0025] 20 - support unit; 201 - first support component; 202 - second support component;

[0026] 30 - shock absorption unit; 301 - first elastic member; 302 - second elastic member;

[0027] 40 - support frame; 50 - support shaft; 501 - second hole; 502 - needle roller assembly; 60 - connecting shaft. Detailed Embodiments

[0028] To make the objectives, advantages, and features of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are all in a very simplified form and not drawn to scale, and are only used to conveniently and clearly assist in explaining the objectives of the embodiments of the present invention. In addition, the structures shown in the accompanying drawings are often part of the actual structures. Specifically, the accompanying drawings need to show different emphases, and sometimes different scales are used. It should also be understood that unless otherwise specified or indicated, the terms "first", "second", "third", etc. in the specification are only used to distinguish the various components, elements, steps, etc. in the specification, rather than to represent the logical relationship or sequential relationship between the various components, elements, steps, etc.

[0029] Please refer to Figure 1 , this embodiment provides a bearing device for an X-ray tube, including a bottom plate 10, a support unit 20, and a shock absorption unit 30; among them, the support unit 20 is disposed on the bottom plate 10 and is close to the X-ray tube; the shock absorption unit 30 is disposed on the support unit 20 and includes a first elastic member 301 and a second elastic member 302; the setting direction of the first elastic member 301 is parallel to the plane where the support unit 20 is located and forms an inclination angle with the plane where the bottom plate 10 is located; the setting direction of the second elastic member 302 is perpendicular to the plane where the support unit 20 is located.

[0030] It can be seen that a shock absorption unit 30 is additionally provided in the bearing device of the X-ray tube provided in this embodiment. The shock absorption unit 30 is used to relieve the shock generated by the X-ray tube due to the impact force. And based on the setting directions of the first elastic member 301 and the second elastic member 302, in a three-dimensional space, the first elastic member 301 can simultaneously achieve shock absorption in two dimensions of X and Z, and the second elastic member 302 can achieve shock absorption in the other dimension Y, so as to be able to synchronously constrain the three moving degrees of freedom of the X-ray tube, achieve the dynamic balance of the X-ray tube, extend the service life of the X-ray tube, and improve the use safety of the mobile digital X-ray imaging device.

[0031] The following will specifically introduce the bearing device of the X-ray tube provided in this embodiment in combination with Figures 1-3 Please refer to

[0032] Please refer to Figures 1-2 , the bottom plate 10 is a plate member in the shape of a rectangle or a rounded rectangle, and is used to carry the X-ray tube, the support unit 20 and the shock absorption unit 30. The X-ray tube is arranged along the length direction of the bottom plate 10, that is, along the Y direction. A first hole 101 is provided at the center position of the bottom plate 10 for facilitating the wire harness of the X-ray tube to pass through. Among them, a plurality of threaded holes are provided around the first hole 101 for bolt connection, so that the X-ray tube is fixedly connected to the bottom plate 10. Optionally, the bottom plate 10 is made of metal, polymer material or carbon fiber material.

[0033] In order to prevent the X-ray tube from generating strong shaking due to the movement of the column, the support unit 20 is provided on the bottom plate 10. Among them, the support unit 20 is vertically fixed on the bottom plate 10 and is provided at the end close to the X-ray tube, and is connected to the X-ray tube through the bottom plate 10. It can be understood that the bottom plate 10 is arranged along the X-Y plane, and the support unit 20 is perpendicular to the bottom plate 10, that is, along the Z-X plane. Further, the X-ray tube is fixedly arranged at the center of the bottom plate 10, and the support unit 20 is spaced from the X-ray tube and is arranged at the end in the length direction of the bottom plate 10. Preferably, the support unit 20 includes a first support component 201 and a second support component 202. The first support component 201 and the second support component 202 are located on the same side of the bottom plate 10 and are fixedly arranged at the opposite ends of the bottom plate 10. As Figure 1As shown, the first support component 201 and the second support component 202 are vertically arranged at opposite ends of the length direction of the bottom plate 10. Among them, the connection methods of the first support component 201 and the second support component 202 to the bottom plate 10 include but are not limited to riveting, welding, or bolt connection, etc. The first support component 201 and the second support component 202 are respectively located at opposite ends of the X-ray tube and are spaced from the X-ray tube to play a blocking role when the X-ray tube is impacted and generates a large amplitude of oscillation, thereby reducing the oscillation amplitude of the X-ray tube and improving the stability of the device.

[0034] To further improve the shock absorption effect of the support unit 20 on the X-ray tube, a shock absorption unit 30 is provided on the support unit 20. The shock absorption unit 30 includes a first elastic member 301 and a second elastic member 302, and opposite ends of the first elastic member 301 and the second elastic member 302 are both installed inside the support unit 20. One end of the second elastic member 302 extends towards the X-ray tube and is spaced from the X-ray tube. Among them, the setting direction of the first elastic member 301 is parallel to the plane where the support unit 20 is located and forms an inclination angle with the plane where the bottom plate 10 is located, that is, the first elastic member 301 is arranged in the Z-X plane. The setting direction of the second elastic member 302 is perpendicular to the plane where the support unit 20 is located, that is, the second elastic member 302 is arranged in the Z-Y plane. Based on this, during actual operation, the vibration transmitted when crossing the threshold is decomposed into three directions of X, Y, and Z. The obliquely arranged first elastic member 301 absorbs the vibration in the X direction and the Z direction, and the horizontally arranged second elastic member 302 absorbs the vibration in the Y direction, effectively controlling the maximum impact acceleration within the allowable range, achieving synchronous constraint on the three translational degrees of freedom of the X-ray tube, ensuring the dynamic balance of the X-ray tube, extending the service life of the X-ray tube, and improving the use safety of the mobile digital X-ray imaging device. Further, in this embodiment, the setting directions of the first elastic member 301 and the first elastic member 302 refer to the axial placement directions of the first elastic member 301 and the first elastic member 302.

[0035] Please continue to refer to Figures 1-2, at least one of the first elastic member 301 and at least one of the second elastic member 302 are provided on the first support assembly 201 and the second support assembly 202. To ensure the force balance, preferably, the number of the first elastic member 301 and the second elastic member 302 provided on the first support assembly 201 and the second support assembly 202 is equal, and the setting directions and positions are symmetric. For example, one first elastic member 301 and one second elastic member 302 are provided in the first support assembly 201. Similarly, at the relative position, one first elastic member 301 and one second elastic member 302 are also provided in the second support assembly 202. Further, the first elastic member 301 is arranged at an angle relative to the bottom plate 10, aiming to provide a certain damping effect on the X-ray tube in the X direction and the Z direction. Therefore, when there are more than two first elastic members 301 provided on the first support assembly 201 and / or the second support assembly 202, an included angle exists between the setting directions of at least some of the first elastic members 301. It can be understood that some of the first elastic members 301 are parallel to each other, and the extension lines of the setting directions of some of the first elastic members 301 intersect, so as to further improve the damping effect in the X direction and the Z direction. For example, three first elastic members 301 are provided on both the first support assembly 201 and the second support assembly 201. Taking the three first elastic members 301 on the first support assembly 201 as an example, the three first elastic members 301 are arranged at intervals on the first support assembly 201, and two of the first elastic members 301 are parallel to each other and have an included angle with the setting direction of the third first elastic member 301; or there is an intersection relationship between the extension lines of the three first elastic members 301.

[0036] The second elastic member 302 is arranged in a direction perpendicular to the plane where the support unit 20 is located, aiming to achieve shock absorption of the X-ray tube in the Y direction. Preferably, when there are two or more second elastic members 302 provided on the first support assembly 201 and / or the second support assembly 202, to ensure uniform force, the number of the second elastic members 302 provided on the first support assembly 201 is the same as that of the second elastic members 302 provided on the second support assembly 202, and their positions correspond to each other. Moreover, the second elastic members 302 are arranged at intervals. Preferably, a plurality of first elastic members 301 and a plurality of second elastic members 302 are provided on the first support assembly 201 and the second support assembly 202, so that when some of the first elastic members 301 and / or the second elastic members 302 are damaged, the remaining first elastic members 301 and / or the second elastic members 302 can still work properly, and the overall structure will not lose its function. Herein, the specific arrangement positions and specific numbers of the first elastic members 301 and the second elastic members 302 are not limited in this embodiment.

[0037] In the example provided in this embodiment Figures 1-2 Both the first support assembly 201 and the second support assembly 202 are provided with two first elastic members 301 and two second elastic members 302. And the two first elastic members 301 and the two second elastic members 302 are symmetrically distributed on the corresponding first support assembly 201 and the second support assembly 202 to enhance the dynamic stability of the X-ray tube. Among them, to ensure balanced control of the shock absorption effects in the X direction and the Z direction, the range of the inclination angle between the setting direction of the first elastic member 301 and the plane X-Y of the bottom plate 10 is 44 degrees to 46 degrees. That is, the included angle between the setting direction of the first elastic member 301 and the X-Y plane is 44 degrees to 46 degrees, preferably 45 degrees, so as to obtain equal buffering in the X direction and the Z direction. Further, the setting directions of the two first elastic members 301 located on the first support assembly 201 and / or the second support assembly 202 are perpendicular to each other to further balance the impact forces in the X direction and the Z direction received by the X-ray tube and ensure the stable use of the X-ray tube.

[0038] Further, both the first elastic member 301 and the second elastic member 302 are rubber columns. The rubber column includes a metal column and a rubber ring sleeved on the metal column. The rubber ring is light in weight and has good damping and pressure resistance, and can effectively absorb shock. Threads are provided at opposite ends of the metal column, which may be Q235 metal studs for threaded connection with the support unit 20. Among them, the rubber column has a simple structure, is easy to install, and does not require additional auxiliary devices. If a failure occurs, it can be directly replaced, which is convenient and fast. Moreover, after adding rubber columns on both sides of the X-ray tube, the complexity of the shock absorption measures of other associated components can be reduced, and the structure of the whole machine system can be effectively optimized.

[0039] As Figure 2 shown, the first support assembly 201 and the second support assembly 202 have support bodies. The support body not only serves to connect the bottom plate 10, but also is used to carry and support the first elastic member 301 and the second elastic member 302, and in cooperation with the connection of the opposite ends of the first elastic member 301 and the second elastic member 302, the stability of the first elastic member 301 and the second elastic member 302 is ensured, improving the device performance. Among them, the connection between the first elastic member 301 and the second elastic member 302 and the support body is a detachable connection, such as threaded connection or snap fit, etc., and the support body is spaced from the X-ray tube to facilitate the disassembly and replacement of the damaged first elastic member 301 and second elastic member 302. Optionally, the support body includes, but is not limited to, metal materials, polymer materials or carbon fiber materials.

[0040] Please refer to Figures 1-3 , the bearing device of the X-ray tube further includes a support frame 40, a support shaft 50 and a connecting shaft 60. The support frame 40 is used to support the X-ray tube. Among them, the main body part of the X-ray tube is located on the bottom plate 10, and the rest of the protruding parts abut against the support frame 40, so the support frame 40 is used to further fix the X-ray tube. And, opposite ends of the support frame 40 are located at opposite ends of the bottom plate 10, and the support shaft 50 penetrates through the end of the support frame 40 and is inserted into the support unit 20 to fix the support frame 40 to the support unit 20. As Figures 1-3 shown, where Figure 3 is Figure 1Cross-sectional view of the first support component 201 along A-A'. Both ends of the support frame 40 are respectively fixed to the first support component 201 and the second support component 202 via the corresponding support shafts 50. And second holes 501 are provided at the central positions of the first support component 201 and the second support component 202 for the support shafts 50 to pass through the support unit 20. Further, a needle roller assembly 502 is provided on the outer surface of each support shaft 50 and is fixed to the corresponding first support component 201 and second support component 202 via R-type lock nuts, so as to drive the support unit 20, the bottom plate 10 and the X-ray tube to rotate synchronously when the support shaft 50 rotates circumferentially, thereby realizing the position adjustment of the X-ray tube. The connecting shaft 60 is arranged on the support frame 40 and is used to connect the support frame 40 to an external component.

[0041] Further, due to the self-weight of the bearing device of the X-ray tube, it will also play a certain role in promoting the transmission of vibrations. Therefore, in order to reduce the weight of the bearing device of the X-ray tube, the bearing device of the X-ray tube in this embodiment preferably uses lightweight materials such as carbon fiber.

[0042] Based on the same inventive concept, this embodiment further provides a mobile digital X-ray imaging device, including the bearing device of the X-ray tube and the X-ray tube described above, and the X-ray tube is installed on the bearing device of the X-ray tube.

[0043] In summary, this embodiment provides a bearing device for an X-ray tube and a mobile digital X-ray imaging device. Among them, a shock absorption unit 30 is added to the bearing device of the X-ray tube. The shock absorption unit 30 is used to relieve the shock generated by the X-ray tube due to the impact force. Further, the shock absorption unit 30 includes a first elastic member 301 and a second elastic member 302; the setting direction of the first elastic member 301 is parallel to the plane where the support unit 20 is located and forms an inclination angle with the plane where the bottom plate 10 is located; the setting direction of the second elastic member 302 is perpendicular to the plane where the support unit 20 is located. Therefore, in three-dimensional space, the first elastic member 301 can achieve shock absorption in two dimensions at the same time, and the second elastic member 302 can achieve shock absorption in another dimension, so as to be able to simultaneously constrain the three translational degrees of freedom of the X-ray tube, realize the dynamic balance of the X-ray tube, extend the service life of the X-ray tube, and improve the use safety of the mobile digital X-ray imaging device.

[0044] In addition, it should also be recognized that although the present invention has been disclosed above in preferred embodiments, the above embodiments are not intended to limit the present invention. For any person skilled in the art, without departing from the scope of the technical solution of the present invention, many possible variations and modifications can be made to the technical solution of the present invention by using the technical content disclosed above, or it can be modified into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A carrying device for an X-ray tube, characterized in that: It comprises a bottom plate (10), a supporting unit (20) and a shock absorbing unit (30); wherein, The support unit (20) is arranged on the base plate (10) and is arranged close to the X-ray tube; The shock absorbing unit (30) is arranged on the supporting unit (20), and comprises a first elastic member (301) and a second elastic member (302); the arrangement direction of the first elastic member (301) is parallel to the plane where the supporting unit (20) is located, and forms an inclination angle with the plane where the bottom plate (10) is located; the arrangement direction of the second elastic member (302) is perpendicular to the plane where the supporting unit (20) is located; and, The opposite ends of the first elastic member (301) are both installed in the support unit (20), and the opposite ends of the second elastic member (302) are both installed in the support unit (20).

2. The X-ray tube carrying device according to claim 1, characterized in that: The inclination angle between the arrangement direction of the first elastic member (301) and the plane where the bottom plate (10) is located is in the range of 44 degrees to 46 degrees.

3. The X-ray tube carrying device according to claim 1, characterized in that: One end of the second elastic member (302) extends toward the X-ray tube and is spaced apart from the X-ray tube.

4. The X-ray tube carrying device according to claim 1, characterized in that: The support unit (20) comprises a first support assembly (201) and a second support assembly (202); the first support assembly (201) and the second support assembly (202) are located on the same side of the base plate (10) and are fixedly arranged at two opposite ends of the base plate (10); wherein the first support assembly (201) and the second support assembly (202) are respectively located at two opposite ends of the X-ray tube and are spaced apart from the X-ray tube.

5. The X-ray tube carrying device according to claim 4, characterized in that: The first supporting assembly (201) and the second supporting assembly (202) are both provided with at least one first elastic member (301) and at least one second elastic member (302).

6. The X-ray tube carrying device according to claim 5, characterized in that: Two or more first elastic members (301) are provided on the first supporting assembly (201) and / or the second supporting assembly (202), and an angle exists between the arrangement directions of at least some of the first elastic members (301).

7. The X-ray tube carrying device according to claim 5, characterized in that: The first supporting assembly (201) and the second supporting assembly (202) are both provided with two first elastic members (301) and two second elastic members (302); wherein the arrangement directions of the two first elastic members (301) located on the first supporting assembly (201) and / or the second supporting assembly (202) are perpendicular to each other.

8. The X-ray tube carrying device according to claim 1, characterized in that: The first elastic member (301) and the second elastic member (302) both comprise a metal column and a rubber ring sleeved on the metal column; opposite ends of the metal column are provided with threads for threaded connection with the support unit (20).

9. The X-ray tube carrying device according to claim 1, characterized in that: The supporting device of the X-ray tube further comprises a support frame (40) and a support shaft (50); opposite ends of the support frame (40) are located at opposite ends of the base plate (10), and the support shaft (50) passes through the ends of the support frame (40) and is arranged in the support unit (20) to fix the support frame (40) on the support unit (20).

10. A mobile digital X-ray imaging device, characterized in that: The invention comprises the X-ray tube carrying device according to any one of claims 1 to 9 and an X-ray tube, wherein the X-ray tube is mounted on the X-ray tube carrying device.

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