X-ray machine

Abstract

The utility model relates to the technical field of medical equipment, in particular to an X-ray machine. Comprising a fixing support which is provided with a fixing part; the upper end of the flat panel detector is rotatably arranged on the fixing part in a sleeving manner; the locking mechanism is arranged on one of the fixing support and the flat panel detector, and the locking mechanism is arranged in a telescopic mode to abut against the other one of the fixing support and the flat panel detector or be separated from the other one of the fixing support and the flat panel detector, so that the fixing support and the flat panel detector are locked or unlocked. For a square flat panel detector, the size of an image collected by the flat panel detector after the flat panel detector rotates by 45 degrees is # imgabs0 times of the original size, under the condition that the size of the original flat panel detector is not changed, the size of image collection is increased, the requirement for multi-size image collection can be met without replacing the flat panel detector, the flexibility is better, and the cost is lower. And meanwhile, the equipment cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to an X-ray machine. Background Art

[0002] Interventional C-arm X-ray imaging equipment is one of the most commonly used interventional devices and is used for diagnosis of patients' heart, liver, kidneys, brain, lungs, spine and other aspects.

[0003] As the image receiving component of the mobile C-arm, the size of the flat-panel detector has a decisive influence on the size of the X-ray image. The common sizes of flat-panel detectors used for mobile C-arms on the market are 20cm×20cm and 30cm×30cm. The larger the size, the more expensive the flat-panel detector. For users, the larger the size of the captured image, the more convenient it is for surgical operations. For a 30cm×30cm flat-panel detector, the image capture size is fixed at 30cm. When a larger image needs to be captured, a larger flat-panel detector needs to be replaced, which increases the cost of the equipment. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides an X-ray machine.

[0005] The present application provides a ray machine, comprising:

[0006] A fixing bracket, wherein the fixing bracket has a fixing portion;

[0007] A flat panel detector, the upper end of which is rotatably sleeved on the fixing portion;

[0008] A locking mechanism is provided on one of the fixing bracket and the flat panel detector, and the locking mechanism can be telescopically arranged to abut against the other of the fixing bracket and the flat panel detector or disengage from the other of the fixing bracket and the flat panel detector to lock or unlock the fixing bracket and the flat panel detector.

[0009] Optionally, one of the fixing bracket and the flat panel detector is provided with a first mounting hole and a second mounting hole arranged vertically, wherein a first end of the second mounting hole is communicated with the first mounting hole, and a second end of the second mounting hole is arranged toward the other of the fixing bracket and the flat panel detector;

[0010] The locking mechanism includes a rotating eccentric shaft, a reset member and a push rod, the rotating eccentric shaft is rotatably installed in the first mounting hole, the push rod is movably installed in the second mounting hole, the reset member is arranged in the second mounting hole and connected to the push rod, one end of the push rod abuts against the side wall of the rotating eccentric shaft, and the other end of the push rod is used to abut against the other of the fixed bracket and the flat panel detector.

[0011] Optionally, a sliding bearing is provided at the second end of the second mounting hole, the push rod is inserted into the sliding bearing, a boss is circumferentially provided at one end of the push rod close to the rotating eccentric shaft, and the reset member is connected between the boss and the sliding bearing.

[0012] Optionally, a friction pad is provided at one end of the push rod away from the rotating eccentric shaft.

[0013] Optionally, the flat panel detector includes a shell and a detection plate arranged inside the shell, a sleeve is provided on one side of the shell, the sleeve is rotatably mounted on the fixed part through a rotating bearing, and the detection plate is fixedly connected to the shell.

[0014] Optionally, the upper end of the sleeve extends inwardly along the circumferential direction to form a mounting plate, and a plurality of positioning grooves are arranged at circumferential intervals on the mounting plate; a retractable elastic column is provided on the fixed bracket, and a ball is provided at one end of the elastic column close to the mounting plate, and the ball is movably engaged with the positioning grooves at different positions.

[0015] Optionally, a wear-resistant layer is provided on the upper surface of the mounting plate, and an opening is formed on the wear-resistant layer at a position corresponding to the positioning groove.

[0016] Optionally, scale lines and angle markings are provided on the outer wall of the sleeve.

[0017] Optionally, a sealing ring is provided between the inner wall of the mounting plate and the fixing portion.

[0018] Optionally, the flat panel detector further includes a rotary encoder, which is disposed in the housing and is used to detect a rotation angle of the detection plate.

[0019] Compared with the prior art, the technical solution provided by the embodiments of the present application has the following advantages:

[0020] In the X-ray machine provided in the embodiment of the present application, the flat panel detector can be rotatably arranged, and the flat panel detector can be locked and unlocked by a locking mechanism. When the size of the collected image needs to be changed, the flat panel detector can be rotated, and the flat panel detector is rotated from being parallel to the structure to be collected in the length direction to being parallel to the structure to be collected in the diagonal direction of the flat panel detector. In this way, the size of the collected image is changed from the length of the side length of the flat panel detector to the length of the diagonal of the flat panel detector. For a square flat panel detector, the size of the image collected by the flat panel detector after being rotated 45° is the original size. times, without changing the size of the original flat-panel detector, the size of the image acquisition is increased. There is no need to replace the flat-panel detector to meet the needs of multi-size image acquisition, which has better flexibility and multiple uses of one machine, while reducing equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 This is a schematic diagram of the structure of the X-ray machine described in the embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the connection structure between the flat panel detector and the fixing bracket according to the embodiment of the present application;

[0025] Figure 3 for Figure 2 A partial enlarged view of point A;

[0026] Figure 4 This is a schematic diagram of the structure of the housing described in the embodiment of the present application;

[0027] Figure 5 This is a schematic diagram of the structure of the sleeve described in the embodiment of the present application.

[0028] Among them, 1. fixed bracket; 2. flat-panel detector; 3. rotating bearing; 4. sealing ring; 5. locking mechanism; 6. elastic column; 7. handle; 8. wear-resistant pad; 9. baffle; 10. fixing part; 20. outer shell; 21. detection plate; 23. protective cover; 24. sleeve; 25. mounting plate; 251. positioning groove; 50. rotating eccentric shaft; 51. push rod; 52. sliding bearing; 53. reset member; 54. first bearing; 55. knob; 511. friction pad; 512. boss. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0031] The size of a C-arm X-ray imaging device is mainly determined by the C-arm. Existing C-arm X-ray imaging devices are generally divided into large C-arms, medium C-arms and small C-arms according to the size of the C-arm. When users have high requirements for the size of the acquired image, a large C-arm usually uses an electric method to drive the flat-panel detector to rotate to the diagonal direction. Usually, the size and weight of such equipment are relatively large. For movable imaging equipment, medium C-arms and small C-arms are generally used, and the flat-panel detector is driven to rotate by an electric method. The cost of this electric method is relatively high.

[0032] To solve the above technical problems, Figures 1 to 5 As shown, an embodiment of the present application provides an X-ray machine, comprising:

[0033] A fixing bracket 1, wherein the fixing bracket 1 has a fixing portion 10;

[0034] A flat panel detector 2, the upper end of which is rotatably mounted on the fixing portion 10;

[0035] The locking mechanism 5 is provided on one of the fixing bracket 1 and the flat panel detector 2, and the locking mechanism 5 can be retracted to abut against the other of the fixing bracket 1 and the flat panel detector 2, or be disengaged from the other of the fixing bracket 1 and the flat panel detector 2 to lock or unlock the fixing bracket 1 and the flat panel detector 2.

[0036] Specifically, the fixed bracket 1 can be a C-shaped arm, or a fixed structure of other shapes or forms; the flat-panel detector 2 is rotatably connected to the fixed portion 10. When the fixed bracket 1 and the flat-panel detector 2 are unlocked, the flat-panel detector 2 can be rotated freely relative to the fixed portion 10. After the flat-panel detector 2 is rotated into place, the locking mechanism 5 extends and abuts between the fixed bracket 1 and the flat-panel detector 2 to lock the two, thereby keeping the flat-panel detector 2 in this position.

[0037] The flat panel detector 2 is rotated manually. When rotating, the flat panel detector 2 is unlocked from the fixed bracket 1. After rotating to the right position, the unlocking mechanism is used to lock it. This structure does not require a driving motor to adjust the angle of the flat panel detector 2. It is suitable for use in small-volume X-ray machines. Compared with electric X-ray machines, it greatly saves equipment costs.

[0038] Illustratively, in some embodiments of the present application, the locking mechanism 5 is disposed on the fixed bracket 1 and is retractably arranged to abut against the flat-panel detector 2. Under normal circumstances, the locking mechanism 5 is extended and abuts against the flat-panel detector 2, locking the flat-panel detector 2 and the fixed bracket 1 to prevent the flat-panel detector 2 from rotating during use. When the angle of the flat-panel detector 2 needs to be adjusted, the locking mechanism 5 is shortened, the locking mechanism 5 is disengaged from the flat-panel detector 2, and the flat-panel detector 2 can rotate relative to the fixed portion 10 under the action of an external force. After the flat-panel detector 2 rotates to the expected position, the locking mechanism 5 is used again to lock the flat-panel detector 2 and the fixed bracket 1.

[0039] Similarly, the locking mechanism 5 can also be set on the flat panel detector 2 without affecting the normal use of the flat panel detector 2. When the locking mechanism 5 is extended, it abuts against the fixed bracket 1 to lock the fixed bracket 1 and the flat panel detector 2. When the locking mechanism 5 is shortened, the locking mechanism 5 is disengaged from the fixed bracket 1, and the flat panel detector 2 can rotate relative to the fixed bracket 1.

[0040] In the X-ray machine provided in the embodiment of the present application, the flat panel detector 2 can be rotatably arranged, and the flat panel detector 2 can be locked and unlocked by the locking mechanism 5. When the size of the collected image needs to be changed, the flat panel detector 2 can be rotated, and the flat panel detector 2 is rotated from being parallel to the structure to be collected in the length direction to being parallel to the structure to be collected in the diagonal direction of the flat panel detector 2. In this way, the size of the collected image is changed from the length of the side length of the flat panel detector 2 to the length of the diagonal of the flat panel detector 2. For a square flat panel detector 2, the size of the image collected by the flat panel detector 2 after being rotated 45° is the original size. times, without changing the size of the original flat-panel detector 2, the size of the image acquisition is increased, and the need for multi-size image acquisition can be met without replacing the flat-panel detector 2, which has better flexibility and multiple uses of one machine, while reducing equipment costs.

[0041] Further, in some embodiments of the present application, one of the fixing bracket 1 and the flat panel detector 2 is provided with a first mounting hole and a second mounting hole arranged vertically, wherein a first end of the second mounting hole is communicated with the first mounting hole, and a second end of the second mounting hole is arranged toward the other of the fixing bracket 1 and the flat panel detector 2;

[0042] The locking mechanism 5 includes a rotating eccentric shaft 50, a reset member 53 and a push rod 51. The rotating eccentric shaft 50 is rotatably installed in the first mounting hole, and the push rod 51 is movably installed in the second mounting hole. The reset member 53 is arranged in the second mounting hole and connected to the push rod 51. One end of the push rod 51 abuts against the side wall of the rotating eccentric shaft 50 under the action of the reset member 53, and the other end of the push rod 51 is used to abut against the other of the fixed bracket 1 and the flat panel detector 2.

[0043] For example, Figure 1 As shown, in some embodiments of the present application, the first mounting hole and the second mounting hole are arranged on the fixed bracket 1, and the fixed bracket 1 includes a C-shaped arm, and the lower side surface of the upper end of the C-shaped arm protrudes downward to form a mounting platform. The fixing part 10 is a split structure of the mounting platform, and the fixing part 10 includes a fixing section and a rotating matching section. The lower surface of the mounting platform is recessed upward to form a mounting groove, and the fixing part 10 extends into the mounting groove and is fixed to the mounting groove. A first fixing hole is provided on the fixing part 10, and a second fixing hole is provided at a corresponding position of the mounting platform. The screws pass through the first fixing hole and the second fixing hole in sequence to fix the fixing part 10 to the mounting platform together.

[0044] The fixed section and the rotating fitting section are both cylindrical in shape, and the outer diameter of the fixed section is smaller than the outer diameter of the rotating fitting section. The rotating fitting section is located below the mounting platform and is fitted with the lower surface of the mounting platform. The projection of the rotating fitting section in the first plane is located inside the projection of the mounting platform in the first plane, wherein the first plane is a plane parallel to the lower surface of the mounting platform; that is, the outer contour of the rotating fitting section does not protrude from the mounting platform, and the lower surface of the mounting platform includes a first fitting surface fitted with the rotating fitting section and a second fitting surface arranged around the first fitting portion.

[0045] The second end of the second mounting hole is located on the second matching surface, and the flat panel detector 2 is rotatably mounted on the rotating matching section, with a gap between the flat panel detector 2 and the second matching surface to ensure that the flat panel detector 2 can rotate freely without being restricted by the mounting platform in the unlocked state.

[0046] The lower end of the push rod 51 extends out from the second mounting hole. In the unlocked state, the lower end of the push rod 51 is not in contact with the flat-panel detector 2. When the flat-panel detector 2 needs to be locked, the rotating eccentric shaft 50 is rotated. During the rotation, the rotating eccentric shaft 50 continuously squeezes the push rod 51, causing the push rod 51 to move downward until the lower end of the push rod 51 abuts against the flat-panel detector 2. At this time, the flat-panel detector 2 is locked with the fixing bracket 1 under the squeezing force and friction force of the push rod 51.

[0047] The rotating eccentric shaft 50 is rotatably mounted in the first mounting hole through a bearing. Specifically, a first bearing 54 is sleeved on the outer circumferential surface of the rotating eccentric shaft 50, and the inner ring of the first bearing 54 is sleeved on the outer circumferential surface of the rotating eccentric shaft 50. The outer ring of the first bearing 54 is fixed in the first mounting hole to realize the rotation of the rotating eccentric shaft 50 in the first mounting hole.

[0048] Furthermore, in some embodiments of the present application, an end bearing is provided between the end of the rotating eccentric shaft 50 and the bottom of the first mounting hole, and the end bearing cooperates with the first bearing 54 to achieve stable rotation of the rotating eccentric shaft 50 .

[0049] Furthermore, in order to achieve the stability of the mounting structure of the rotating eccentric shaft 50, in some embodiments of the present application, a clamping ring is also provided in the first mounting hole, the clamping ring is fixed in the first mounting hole, and is sleeved on the rotating eccentric shaft 50, the clamping ring is located on one side of the first bearing 54 along the axial direction, and the rotating eccentric shaft 50 is provided with a shoulder on the other side of the first bearing 54 along the axial direction, and the shoulder and the clamping ring are respectively arranged on both sides of the first bearing 54 along the axial direction for positioning the first bearing 54.

[0050] One end of the rotating eccentric shaft 50 away from the bottom of the first mounting hole extends out of the first mounting hole, and in order to facilitate the rotation of the rotating eccentric shaft 50, a knob 55 is provided on the end of the rotating eccentric shaft 50 extending out of the first mounting hole, and the knob 55 is sleeved on the rotating eccentric shaft 50. The knob 55 and the rotating eccentric shaft 50 are fixed by a fastening screw, and the fixing effect of the two is improved by a flat key to avoid slippage between the rotating eccentric shaft 50 and the knob 55 when the knob 55 is rotated.

[0051] Furthermore, in some embodiments of the present application, a sliding bearing 52 is provided at the second end of the second mounting hole, the push rod 51 is inserted into the sliding bearing 52, a boss 512 is provided along the bearing at one end of the push rod 51 close to the rotating eccentric shaft 50, and a reset member 53 is connected between the boss 512 and the sliding bearing 52.

[0052] Specifically, the second mounting hole is a circular hole, the push rod 51 is cylindrical, the diameter of the push rod 51 is smaller than the diameter of the second mounting hole, and the push rod 51 is arranged along the center line of the second mounting hole, and there is a gap between the outer wall of the push rod 51 and the inner wall of the second mounting hole. The diameter of the boss 512 is equal to or slightly smaller than the diameter of the second mounting hole, the sliding bearing 52 is sleeved on the push rod 51, and the sliding bearing 52 is fixedly connected to the second mounting hole, and the push rod 51 can move up and down in the sliding bearing 52.

[0053] The reset member 53 is selected from a spring or other elastic member, such as Figure 1 As shown, in some embodiments of the present application, the reset member 53 is a spring, which is sleeved on the push rod 51 and located between the boss 512 and the sliding bearing 52. After the X-ray machine is installed, the spring is always in a compressed state, so that the spring has an initial elastic force in the unlocked state, thereby causing the push rod 51 to receive an upward elastic force, and the lower end of the push rod 51 maintains a certain gap with the flat-panel detector 2.

[0054] Furthermore, in some embodiments of the present application, a friction pad 511 is provided at one end of the push rod 51 away from the rotating eccentric shaft 50. When the knob 55 is rotated, the rotating eccentric shaft 50 rotates and continuously squeezes the push rod 51 to move downward until the push rod 51 contacts the flat-panel detector 2. The rotating eccentric shaft 50 continues to be rotated, and the push rod 51 will also have a downward displacement. In this process, the push rod 51 squeezes the friction pad 511, thereby increasing the friction between the push rod 51 and the flat-panel detector 2, thereby improving the locking effect of the fixed bracket 1 and the flat-panel detector 2.

[0055] Furthermore, in some embodiments of the present application, the flat panel detector 2 includes a housing 20 and a detection plate 21 disposed inside the housing 20 , a sleeve 24 is provided on one side of the housing 20 , the sleeve 24 is rotatably mounted on the fixed portion 10 through a rotating bearing 3 , and the detection plate 21 is fixedly connected to the housing 20 .

[0056] Specifically, the shell 20 mainly protects the detection plate 21 and reduces the radiation of X-rays, thereby preventing the detection plate 21 from being exposed to the air and the accuracy of the detection plate 21 from being affected by impurities such as dust in the environment; in some embodiments of the present application, the detection plate 21 is square in shape, and the shell 20 is a rectangular shell with the lower end of the shell 20 open, and a protective cover 23 is installed at the lower end of the shell 20. On the one hand, it does not affect the normal use of the detection plate 21, and on the other hand, it can also provide a certain degree of protection for the detector. The upper surface of the detection plate 21 is fitted and fixed to the inner side surface of the upper end of the shell 20.

[0057] A connecting port is provided at the upper end of the housing 20. The connecting port is circular, and the diameter of the connecting port is equal to the diameter of the sleeve 24. The sleeve 24 is correspondingly arranged at the connecting port, and the sleeve 24 is sleeved on the fixing part 10. A rotating bearing 3 is arranged between the inner wall of the sleeve 24 and the outer circumferential surface of the fixing part 10 to realize the relative rotation of the flat panel detector 2 and the fixing part 10.

[0058] Furthermore, in some embodiments of the present application, the upper end of the sleeve 24 extends axially inward to form a mounting plate 25, and a plurality of positioning grooves 251 are arranged at axial intervals on the upper surface of the mounting plate 25; a retractable elastic column 6 is provided on the fixed bracket 1, and a ball is provided at one end of the elastic column 6 close to the mounting plate 25, and the ball can be movably matched with the positioning grooves 251 at different positions.

[0059] Specifically, a third mounting hole is provided on the fixing bracket 1, and the third mounting hole extends in the up-down direction. The elastic column 6 is retractably arranged in the third mounting hole. The elastic column 6 includes a reset structure. When the flat-panel detector 2 rotates to a position corresponding to the positioning groove 251 and the elastic column 6, there is no external force below the elastic column 6. The elastic column 6 extends from the lower end of the second mounting hole and enters the positioning groove 251. When the flat-panel detector 2 rotates again, under the action of the reset structure, the elastic column 6 moves upward, and the ball moves out of the positioning groove 251 until it moves to the next positioning groove 251 and enters the positioning groove 251 again.

[0060] Furthermore, in the initial position of the flat panel detector 2, the elastic column 6 cooperates with the positioning groove 251. When the flat panel detector 2 rotates to the preset position, the elastic column 6 just enters the next positioning groove 251. When the elastic column 6 enters the positioning groove 251, the operator will have a certain touch, reminding the operator to rotate into place.

[0061] For example, positioning grooves 251 at common positions are provided on the mounting plate 25, and a positioning groove 251 is provided at 0°, 45°, 90°, 135°, 180°, etc., with each 45° interval. The positioning grooves 251 are provided only on a semicircular track on the mounting plate 25, and the other semicircle forms a raised baffle 9. When the flat panel detector 2 rotates to 0° or 180° and continues to rotate, the elastic column 6 and the baffle 9 interfere with each other, and the flat panel detector 2 cannot continue to rotate in the original direction, and can only rotate in the reverse direction.

[0062] Furthermore, in some embodiments of the present application, a wear-resistant pad 8 is disposed on the upper surface of the mounting plate 25. The wear-resistant pad 8 is semicircular in shape and is disposed corresponding to the positioning groove 251. An opening is disposed on the wear-resistant pad 8 at a position corresponding to the positioning groove 251. The provision of the wear-resistant pad 8 avoids direct contact friction between the ball bearing and the housing 20 during the rotation of the flat panel detector 2, thereby reducing the degree of wear of the housing 20.

[0063] Furthermore, in some embodiments of the present application, scale lines and angle markings are provided on the outer wall of the sleeve 24 to facilitate the operator to observe the rotation angle of the flat panel detector 2 .

[0064] Furthermore, in some embodiments of the present application, a sealing ring 4 is provided between the inner wall of the mounting plate 25 and the fixing portion 10 to prevent external impurities such as dust and liquid from entering the housing 20 when the flat-panel detector 2 is cleaned and disinfected, thereby preventing the normal use of the detection plate 21 from being affected.

[0065] A handle 7 is provided on the housing 20 , and an operator rotates the flat panel detector 2 by operating the handle 7 .

[0066] Furthermore, in some embodiments of the present application, the flat panel detector 2 further includes a rotary encoder, which is disposed in the housing 20 and is used to detect the rotation angle of the detection plate 21 .

[0067] Specifically, there are many types of rotary encoders, the most commonly used of which are mechanical and electronic. Different rotary encoders have different installation structures in the housing 20, but all of them are used to detect the rotation angle of the detection plate 21. When the flat panel detector 2 is manually rotated 45°, the rotary encoder feeds back the angle of the flat panel detector 2 to the C-arm system, and the system will synchronously match the angle of the opening size of the beam limiter to meet the user's requirements for image size.

[0068] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0069] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An X-ray machine, characterized in that: include: A fixing bracket (1), wherein the fixing bracket (1) has a fixing portion (10); A flat panel detector (2), the upper end of the flat panel detector (2) being rotatably sleeved on the fixing portion (10); A locking mechanism (5), wherein the locking mechanism (5) is arranged on one of the fixing bracket (1) and the flat panel detector (2), and the locking mechanism (5) can be telescopically arranged to abut against the other of the fixing bracket (1) and the flat panel detector (2) or to be disengaged from the other of the fixing bracket (1) and the flat panel detector (2), so as to lock or unlock the fixing bracket (1) and the flat panel detector (2).

2. The X-ray machine according to claim 1, characterized in that: One of the fixing bracket (1) and the flat panel detector (2) is provided with a first mounting hole and a second mounting hole which are arranged vertically, wherein a first end of the second mounting hole is connected to the first mounting hole, and a second end of the second mounting hole is arranged toward the other of the fixing bracket (1) and the flat panel detector (2); The locking mechanism (5) comprises a rotating eccentric shaft (50), a reset member (53) and a push rod (51); the rotating eccentric shaft (50) is rotatably mounted in the first mounting hole; the push rod (51) is movably mounted in the second mounting hole; the reset member (53) is arranged in the second mounting hole and connected to the push rod (51); one end of the push rod (51) abuts against a side wall of the rotating eccentric shaft (50); and the other end of the push rod (51) is used to abut against the other of the fixed bracket (1) and the flat panel detector (2).

3. The X-ray machine according to claim 2, characterized in that: A sliding bearing (52) is provided at the second end of the second mounting hole, the push rod (51) is inserted into the sliding bearing (52), a boss (512) is circumferentially provided at one end of the push rod (51) close to the rotating eccentric shaft (50), and the reset member (53) is connected between the boss (512) and the sliding bearing (52).

4. The X-ray machine according to claim 2, characterized in that: A friction pad (511) is provided at one end of the push rod (51) away from the rotating eccentric shaft (50).

5. The X-ray machine according to any one of claims 1 to 4, characterized in that: The flat panel detector (2) comprises a housing (20) and a detection plate (21) arranged inside the housing (20); a sleeve (24) is provided on one side of the housing (20); the sleeve (24) is rotatably sleeved on the fixed portion (10) via a rotating bearing (3); and the detection plate (21) is fixedly connected to the housing (20).

6. The X-ray machine according to claim 5, characterized in that: The upper end of the sleeve (24) extends inwardly along the circumferential direction to form a mounting plate (25), and a plurality of positioning grooves (251) are arranged on the mounting plate (25) at intervals along the circumferential direction; a retractable elastic column (6) is arranged on the fixed bracket (1), and a ball is arranged at one end of the elastic column (6) close to the mounting plate (25), and the ball is movable to cooperate with the positioning grooves (251) at different positions.

7. The X-ray machine according to claim 6, characterized in that: A wear-resistant pad (8) is arranged on the upper surface of the mounting plate (25), and an opening is arranged on the wear-resistant pad (8) at a position corresponding to the positioning groove (251).

8. The X-ray machine according to claim 5, characterized in that: The outer wall of the sleeve (24) is provided with scale lines and angle markings.

9. The X-ray machine according to claim 6, characterized in that: A sealing ring (4) is provided between the inner wall of the mounting plate (25) and the fixing portion (10).

10. The X-ray machine according to claim 5, characterized in that: The flat panel detector (2) further comprises a rotary encoder, which is arranged in the housing (20) and is used to detect the rotation angle of the detection plate (21).

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