An aperture and stand arrangement for the calibration of an x-ray dosimeter

Abstract

This invention discloses an aperture and support device for calibrating diagnostic X-ray dosimeters, aiming to solve the problems of inconvenient disassembly and replacement, difficult maintenance, limited adjustment dimensions of existing calibration apertures, inability to adapt to diverse calibration optical path requirements, and insufficient positioning stability after adjustment. The aperture of this invention adopts a split structure, consisting of an aperture back groove, an aperture block, and an end cap. The end cap is locked with screws to achieve stable positioning of the aperture block. The supporting support device is equipped with lateral movement, axial rotation, and vertical height adjustment components, enabling multi-dimensional position and angle adjustment of the aperture. Each adjustment structure is equipped with locking components to lock the position after adjustment. This invention offers convenient disassembly and maintenance, can flexibly adapt to different calibration optical path requirements, is simple to adjust, provides stable and reliable positioning, and improves the convenience of calibration operations.

Description

Technical Field

[0001] This invention relates to the field of X-ray dosimeter calibration equipment technology, and more specifically to an aperture and support device for diagnosing X-ray dosimeter calibration. Background Technology

[0002] In radiological diagnosis and treatment, diagnostic X-ray equipment is the foundation of clinical disease imaging diagnosis. The accuracy of its X-ray output dose directly affects the imaging quality of clinical images and is also closely related to the radiation safety of patients and operators. According to national radiation health standards and diagnostic quality control specifications, the radiation output dose of diagnostic X-ray equipment needs to be tested and verified regularly. During the calibration of diagnostic X-ray dosimeters, the calibration aperture is a core functional component. Its function is to limit the size and shape of the X-ray irradiation field, filter out scattered rays, and ensure that the X-ray beam incident on the dosimeter meets the geometric and radiation field conditions specified in the calibration procedure. It is a key structure for ensuring the consistency of calibration conditions and the comparability of calibration results. Currently, most commonly used diagnostic X-ray dosimeter calibration apertures adopt an integrated fixed structure, with the core radiation shielding aperture block and the external support shell being a single molded structure. This type of structure has obvious shortcomings in practical use: when the calibration procedure requires the replacement of the aperture with a different aperture size to adapt to the calibration requirements of different dose ranges and different X-ray tube voltages, the entire aperture device needs to be replaced, which is extremely inflexible and increases the hardware cost and operational complexity of the calibration work.

[0003] Meanwhile, existing support devices for calibrating apertures have many limitations in their structural design. Most conventional supports can only achieve height adjustment in a single vertical direction, and cannot complete the horizontal displacement adjustment and circumferential rotation angle adjustment of the aperture. They are difficult to flexibly adapt to the optical path alignment requirements of different models of diagnostic X-ray equipment and different calibration positions. When there is a horizontal offset or angular deviation between the beam center of the X-ray emission source and the preset optical path, the aperture cannot be adjusted accordingly by the support, resulting in the calibration operation not being able to be carried out smoothly. Therefore, those skilled in the art here propose a solution for an aperture and support device for calibrating diagnostic X-ray dosimeters. Summary of the Invention

[0004] In addressing the shortcomings of existing diagnostic X-ray dosimeter calibration processes, where the aperture often employs an integrated fixed structure, making it inconvenient to disassemble, replace, maintain, and repair the core light-shielding components, and where the accompanying support and adjustment devices have limited adjustment dimensions and cannot flexibly adapt to the optical path adjustment requirements of different calibration scenarios, and lack stability after positioning and locking, this invention provides an aperture and support device for diagnostic X-ray dosimeter calibration. This device enables rapid disassembly and assembly of the core aperture components and stable positioning, while simultaneously achieving multi-dimensional position and angle adjustment of the aperture, fully meeting the usage requirements of diagnostic X-ray dosimeter calibration.

[0005] An aperture for calibrating an X-ray dosimeter includes an aperture assembly comprising an aperture back groove, a tungsten alloy aperture block, and an end cap. The tungsten alloy aperture block is fitted inside the aperture back groove, and the end cap is locked to the front side of the aperture back groove by four screws. After the end cap is locked, it can form a stable axial restraint on the tungsten alloy aperture block, preventing the tungsten alloy aperture block from displacing or falling out of the aperture back groove.

[0006] In the above technical solution, preferably: the back groove of the aperture is provided with a receiving groove that matches the outer contour of the tungsten alloy aperture block, for stably placing the tungsten alloy aperture block; the back groove of the aperture, the tungsten alloy aperture block and the end cap are all provided with through openings coaxially at the center of their interiors, so as to ensure that the calibration X-rays can pass through each component in a straight line along the preset optical path, thus meeting the optical path setting requirements for dosimeter calibration.

[0007] A support device for calibrating a diagnostic X-ray dosimeter, adapted for use with the aforementioned aperture for diagnostic X-ray dosimeter calibration, specifically includes a lateral movement component at the bottom, an axial rotation component connected above the lateral movement component, and a vertical adjustment component fixed above the axial rotation component. Through the cooperation of these three components, the aperture can be flexibly adjusted in three dimensions: lateral displacement, circumferential rotation angle, and vertical height. The lateral movement component includes a base, two steel guide rails fixed to the front and rear positions of the upper surface of the base, and sliders slidably disposed within the steel guide rails. Nuts are fixed between the sliders. A lead screw adapted to the nut is rotatably disposed at the upper center of the base. The meshing transmission between the lead screw and the lead nut converts the rotational motion of the lead screw into the linear sliding motion of the slider along the steel guide rail. The axial rotation assembly includes a connecting plate, a top plate located above the connecting plate, and a rotating shaft passing through the connecting plate and the top plate. A connecting rod is fixed to the top of the rotating shaft, and a fastening screw passes through the inside of the connecting rod. The rotating shaft drives the connecting rod to rotate synchronously with the top plate, realizing the adjustment of the circumferential angle of the aperture, and the fastening screw completes the locking limit after rotation. The vertical height adjustment assembly includes two left and right mirror-symmetrical slots, an inverted triangular block that slides vertically on one side of the slot, and a crossbeam fixed to the top of the inverted triangular block. The inverted triangular block slides vertically along the slot, driving the crossbeam to synchronously complete the vertical height adjustment with the aperture.

[0008] In the above technical solution, preferably: support seats are fixed on the top left and right sides of the base, and bearings are installed inside the support seats to adapt to the rotation of the non-helical sections on the left and right sides of the lead screw. Through the cooperation of the two sets of support seats and bearings, stable rotational support is provided for the lead screw, reducing the frictional resistance during the rotation of the lead screw and improving the smoothness of lateral adjustment.

[0009] In the above technical solution, preferably: a slider lock is fixed on the front surface of the slider, and the slider lock consists of a fixing plate fixed on the front surface of the slider and an alloy screw penetrating inside the fixing plate. The rear end of the alloy screw can abut against the front surface of the base, and is used to increase the friction between the slider and the base by screwing the alloy screw after the slider slides to the designated position, so as to realize the locking and limiting between the slider and the base and prevent the slider from undergoing unexpected displacement.

[0010] In the above technical solution, preferably: the right end of the lead screw passes through the support seat on the corresponding side and is fixedly connected to a rocker arm. The rocker arm can conveniently drive the lead screw to rotate around its own axis, thereby realizing the manual adjustment of the lateral displacement of the slider. The top of the slider is fixedly connected to the bottom surface of the connecting plate, ensuring that the connecting plate can synchronously complete the lateral position adjustment with the slider, thereby realizing the synchronous adjustment of the lateral position of the aperture.

[0011] In the above technical solution, preferably: the connecting plate has an arc-shaped groove coaxial with the rotating shaft inside; the connecting plate has multiple threaded holes arranged in a ring array along the extension path of the arc-shaped groove inside, for fastening screws to pass through the arc-shaped groove and be screwed in; the bottom end of the rotating shaft is rotatably connected to the top surface of the connecting plate; the central area inside the top plate has a circular hole with a diameter larger than the shaft diameter to avoid contact interference between the top plate and the rotating shaft, ensuring smooth rotation of the rotating shaft; at the same time, the rotation angle of the rotating shaft can be stably locked by the cooperation of the fastening screws and the corresponding threaded holes.

[0012] In the above technical solution, preferably: the bottom end of the card slot is fixedly connected to the left and right sides of the upper surface of the top plate; the sides of the card slot that are close to each other are provided with a sliding groove in the vertical direction; the outer wall of the card slot is equipped with a hand-tightening bolt; the ends of the hand-tightening bolt that are far from each other are rotatably connected to a rubber slider that is adapted to the sliding groove; by turning the hand-tightening bolt, the rubber slider can be driven to move horizontally along the sliding groove and abut against the side wall of the inverted triangle block; the height position of the inverted triangle block is locked and limited by friction, ensuring the stability after the aperture height is adjusted.

[0013] In the above technical solution, preferably: the top surface of the crossbeam is fixedly connected to the bottom surface of the aperture back groove, so that the aperture can be adjusted in multiple dimensions in sync with the horizontal moving component, axial rotating component and vertical height adjustment component of the support device, so as to flexibly adapt to different optical path setting requirements in the calibration process of the diagnostic X-ray dosimeter.

[0014] As can be seen from the above technical solution, the aperture and support device for calibrating X-ray dosimeters provided by the present invention have the following beneficial effects compared with the prior art:

[0015] This technical solution employs a split-type aperture structure, enabling rapid disassembly and replacement of the core light-shielding component. It flexibly adapts to the calibration optical path requirements of different specifications, while facilitating routine maintenance and repair. The split assembly structure provides stable limiting constraints on the core light-shielding component, preventing component displacement or detachment during use. The accompanying support device allows for multi-dimensional position and angle adjustment of the aperture, flexibly adapting to the optical path setup requirements of different calibration scenarios. Adjustment operations are convenient and smooth, with corresponding locking structures for each adjustment dimension, ensuring stable position locking after adjustment and preventing unexpected positional changes during use. This effectively improves the convenience and adaptability of calibration operations, reduces the difficulty of calibration implementation, and ensures optical path stability during calibration, providing stable and reliable hardware support for the calibration of diagnostic X-ray dosimeters. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced and explained below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the aperture support structure;

[0018] Figure 2 This is a schematic diagram of a horizontally moving component;

[0019] Figure 3 This is a schematic diagram of an axial rotation assembly;

[0020] Figure 4 This is a schematic diagram of the vertical height adjustment component;

[0021] Figure 5 This is a schematic diagram of the aperture assembly.

[0022] Appendix Figure 1 - Appendix Figure 5 The correspondence between the components is as follows:

[0023] 1. Lateral Movement Assembly; 1-1. Base; 1-2. Support Base; 1-3. Lead Screw; 1-4. Slider; 1-5. Rocker; 1-6. Slider Lock; 1-7. Nut; 1-8. Steel Guide Rail; 2. Axial Rotation Assembly; 2-1. Connecting Plate; 2-2. Arc-shaped Slide; 2-3. Fastening Screw; 2-4. Connecting Rod; 2-5. Rotating Shaft; 2-6. Top Plate; 3. Vertical Height Adjustment Assembly; 3-1. Slot; 3-2. Hand-tightening Bolt; 3-3. Crossbeam; 3-4. Inverted Triangle Block; 4. Aperture Assembly; 4-1. Aperture Back Groove; 4-2. Tungsten Alloy Aperture Block; 4-3. End Cap. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described below are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In order to provide a clearer explanation and description of the technical solutions and implementation methods of the present invention, the following describes specific embodiments that implement the preferred technical solutions of the present invention.

[0025] This embodiment provides a support device for calibrating an X-ray dosimeter. The support device is adapted to an aperture for X-ray dosimeter calibration. The aperture includes an aperture assembly 4, which comprises an aperture back groove 4-1, an aperture block 4-2 fitted inside the aperture back groove 4-1, and an end cap 4-3 secured to the front of the aperture back groove 4-1 and restraining the aperture block 4-2 by four screws. The aperture back groove 4-1 has a slot for placing the aperture block 4-2. The aperture back groove 4-1, aperture block 4-2, and... The end cap 4-3 has an opening in the center for X-rays to pass through. The contour of the aperture back groove 4-1 matches the outer contour of the aperture block 4-2, so that the aperture block 4-2 can be stably locked inside the aperture back groove 4-1. The coverage area of ​​the end cap 4-3 matches the opening area of ​​the aperture back groove 4-1, so that the end cap 4-3 can cover the opening of the groove after being locked, thus forming an axial restraint on the aperture block 4-2. The aperture back groove 4-1, the aperture block 4-2 and the central opening of the end cap 4-3 are coaxially arranged, so that X-rays can pass through each opening in a straight line.

[0026] The support device for calibrating a diagnostic X-ray dosimeter specifically includes a lateral movement assembly 1 located at the bottom, an axial rotation assembly 2 connected above the lateral movement assembly 1, and a vertical adjustment assembly 3 fixed above the axial rotation assembly 2. The lateral movement assembly 1 includes a base 1-1, two guide rails 1-8 fixed at the front and rear positions on the upper surface of the base 1-1, and sliders 1-4 slidably disposed within the guide rails 1-8. Nuts 1-7 are fixed between the sliders 1-4. A lead screw 1-3 adapted to the nut 1-7 is rotatably disposed at the upper center of the base 1-1. Support seats 1-2 are fixed on the left and right sides of the top of the base 1-1. Bearings for the rotation of the non-helical sections of the lead screw 1-3 are installed inside the support seats 1-2. The two guide rails 1-8 are arranged parallel to each other, and the extension direction of the guide rails 1-8 is consistent with the axial extension direction of the lead screw 1-3. The internal thread of the nut 1-7 meshes with the external thread of the lead screw 1-3, so that the rotational motion of the lead screw 1-3 can be converted into a lead screw. The linear motion of the mother 1-7 is supported by support seats 1-2, which are respectively installed at both ends of the lead screw 1-3 to provide rotational support for the lead screw 1-3. A slider lock 1-6 is fixed on the front surface of the slider 1-4. The slider lock 1-6 consists of a fixing plate fixed to the front surface of the front slider 1-4 and a screw rod passing through the inside of the fixing plate. The rear end of the screw rod contacts the front surface of the base 1-1 to lock the slider 1-4 after it slides to the designated position. The fixing plate has an opening inside that is adapted to the screw rod. The screw has a threaded through hole. When the screw is screwed into the threaded through hole, its rear end can fit against the front surface of the base 1-1. The relative displacement between the slider 1-4 and the base 1-1 is limited by friction. The right end of the lead screw 1-3 passes through the support base 1-2 and is connected to the rocker arm 1-5. The rocker arm 1-5 is fixedly connected to the right end of the lead screw 1-3. The extension direction of the rocker arm 1-5 is perpendicular to the axis of the lead screw 1-3. The top of the slider 1-4 is connected to the bottom surface of the connecting plate 2-1 of the axial rotation assembly 2.

[0027] The axial rotation assembly 2 includes a connecting plate 2-1, a top plate 2-6 located above the connecting plate 2-1, and a rotating shaft 2-5 penetrating the connecting plate 2-1 and the top plate 2-6. A connecting rod 2-4 is fixed to the top of the rotating shaft 2-5, and a fastening screw 2-3 passes through the interior of the connecting rod 2-4. The interior of the connecting plate 2-1 has multiple threaded holes arranged in a circular array for the fastening screw 2-3 to pass through the arc-shaped sliding groove 2-2 and be screwed in. The bottom end of the rotating shaft 2-5 is rotatably connected to the top surface of the connecting plate 2-1. A circular hole with a diameter larger than the shaft diameter of the rotating shaft 2-5 is opened in the central area of ​​the interior of the top plate 2-6. The bottom surface of the connecting plate 2-1 is fixedly connected to the top surface of the slider 1-4. One end of the connecting rod 2-4 is connected to the rotating shaft 2-5. The top end of 5 is fixedly connected, and the other end of the connecting rod 2-4 extends towards the edge of the connecting plate 2-1. The fastening screw 2-3 passes through the extension end of the connecting rod 2-4 in the vertical direction. The arc-shaped groove 2-2 on the connecting plate 2-1 is coaxially set with the rotating shaft 2-5. The coverage area of ​​the arc-shaped groove 2-2 is adapted to the rotation angle range of the rotating shaft 2-5. The rod part of the fastening screw 2-3 can pass through the arc-shaped groove 2-2 and be screwed into the corresponding threaded hole inside the connecting plate 2-1, so that the connecting rod 2-4 and the connecting plate 2-1 form a fixed connection, thereby restricting the circumferential rotation of the rotating shaft 2-5. The top plate 2-6 is fixedly set on the outside of the rotating shaft 2-5, and a gap is left between the lower surface of the top plate 2-6 and the upper surface of the connecting plate 2-1.

[0028] The vertical height adjustment component 3 includes two mirror-symmetrical slots 3-1, an inverted triangular block 3-4 slidably positioned on one side of the slots 3-1, and a crossbeam 3-3 fixed to the top of the inverted triangular block 3-4. The bottom ends of the slots 3-1 are fixedly connected to the left and right sides of the upper surface of the top plate 2-6. Each side of the slots 3-1 has a sliding groove. The ends of the hand-tightening bolts 3-2 are rotatably connected to sliders adapted to the sliding grooves. The top surface of the crossbeam 3-3 is fixedly connected to the bottom surface of the aperture back groove 4-1. The two slots 3-1 are vertically fixed to the left and right sides of the upper surface of the top plate 2-6, respectively. The sliding grooves of the two slots 3-1 are opposite each other. The left and right ends of the inverted triangular block 3-4 are respectively embedded into the sliding grooves of the corresponding side slots 3-1, allowing the inverted triangular block 3-4 to slide along the grooves. The vertical extension direction allows for up-and-down sliding. The hand-tightening bolt 3-2 penetrates the outer wall of the slot 3-1 in the horizontal direction. The shank of the hand-tightening bolt 3-2 is adapted to the threaded hole on the side wall of the slot 3-1. The end of the hand-tightening bolt 3-2 facing the inside of the slide groove is rotatably connected to the slider. The outer contour of the slider is adapted to the inner contour of the slide groove. When the hand-tightening bolt 3-2 is tightened, the slider can be moved in the horizontal direction of the slide groove, so that the slider is in contact with the side wall of the inverted triangle block 3-4. The vertical sliding of the inverted triangle block 3-4 is restricted by friction. The left and right ends of the crossbeam 3-3 are fixedly connected to the top of the corresponding inverted triangle block 3-4, so that the aperture assembly 4 can be adjusted vertically in sync with the inverted triangle block 3-4. At the same time, it can be adjusted laterally with the horizontal movement assembly 1 and adjusted circumferentially with the axial rotation assembly 2.

[0029] The workflow of this technical solution is as follows: First, assemble the aperture assembly 4. Insert the tungsten alloy aperture block 4-2 into the slot of the aperture back groove 4-1. Attach the end cap 4-3 to the front side of the aperture back groove 4-1 and secure it to the aperture back groove 4-1 with four screws. After assembling the aperture assembly 4, fix the bottom of the aperture back groove 4-1 to the top surface of the crossbeam 3-3, completing the assembly of the aperture and the support device. When adjusting the lateral position of the aperture, rotate the rocker arm 1-5, causing the lead screw 1-3 to rotate around its own axis. Through the meshing transmission between the lead screw 1-3 and the lead nut 1-7, the lead nut 1-7 moves linearly left and right along the axial direction of the lead screw 1-3. Simultaneously, the lead nut 1-7 drives the slider 1-4 along the steel guide rail 1-8. Slide the slider 1-4 left and right along its extension direction. The slider 1-4 drives the axial rotation component 2, vertical height adjustment component 3, and aperture component 4 above to simultaneously adjust their lateral positions. After adjusting to the target position, tighten the alloy screw of the slider lock 1-6 so that the rear end of the alloy screw abuts against the front surface of the base 1-1, thus locking the slider 1-4. When it is necessary to adjust the circumferential angle of the aperture, loosen the fastening screw 2-3 to release the locking limit between the connecting rod 2-4 and the connecting plate 2-1. Rotate the rotating shaft 2-5 to drive the connecting rod 2-4, top plate 2-6, vertical height adjustment component 3, and aperture component 4 to rotate circumferentially around the axis of the rotating shaft 2-5. After adjusting to the target angle, pass the fastening screw 2-3 through the connecting rod 2-4 and the connecting plate 2-1. The corresponding arc-shaped slide groove 2-2 is screwed into the corresponding threaded hole on the connecting plate 2-1 to complete the circumferential locking of the rotating shaft 2-5 and fix the circumferential angle of the aperture. When it is necessary to adjust the vertical height of the aperture, loosen the hand-tightening bolts 3-2 on both sides of the slot 3-1 to release the limiting constraint of the rubber slider on the inverted triangle block 3-4. Slide the inverted triangle block 3-4 up and down along the vertical direction of the slide groove 3-1. The inverted triangle block 3-4 drives the crossbeam 3-3 and the aperture assembly 4 to simultaneously complete the vertical height adjustment. After adjusting to the target height, tighten the hand-tightening bolts 3-2 to drive the rubber slider to move horizontally along the slide groove, so that the rubber slider and the side wall of the inverted triangle block 3-4 are in contact and pressed together, completing the position locking of the inverted triangle block 3-4, fixing the vertical height of the aperture, and completing the position and angle adjustment of the aperture. After height adjustment, the X-rays emitted by the diagnostic X-ray equipment pass sequentially through the end cap 4-3, the tungsten alloy aperture block 4-2, and the opening in the center of the aperture back groove 4-1, forming an X-ray beam of the corresponding specification. This beam irradiates the diagnostic X-ray dosimeter to be calibrated, completing the dosimeter calibration operation. If a different specification of tungsten alloy aperture block 4-2 needs to be replaced, unscrew the four screws securing the end cap 4-3, remove the end cap 4-3, and remove the original tungsten alloy aperture block 4-2 from the groove in the aperture back groove 4-1. After replacing it with the corresponding specification tungsten alloy aperture block 4-2, re-lock the end cap 4-3 to the front of the aperture back groove 4-1 using the four screws. This completes the aperture specification replacement. After calibration, the locking states of each component can be released sequentially according to usage requirements.Reset all adjustment components to their original positions to complete the storage of the device.

[0030] This invention is not limited to the preferred embodiments described above. Anyone should understand that structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention. Finally, it should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this application, should still fall within the scope of the technical content disclosed in this application.

Claims

1. An aperture for use in the calibration of an X-ray dosimeter for diagnostic use, characterised in that: It includes an aperture assembly (4), which includes an aperture back groove (4-1), a tungsten alloy aperture block (4-2) that is fitted inside the aperture back groove (4-1), and an end cap (4-3) that is locked to the front side of the aperture back groove (4-1) and restrains the tungsten alloy aperture block (4-2) by four screws.

2. A diaphragm for calibrating a diagnostic X-ray dosimeter according to claim 1, characterized in that: The back groove of the aperture (4-1) is provided with a groove for placing the tungsten alloy aperture block (4-2). The back groove of the aperture (4-1), the tungsten alloy aperture block (4-2) and the end cap (4-3) are all provided with an opening in the center of the interior for X-rays to pass through.

3. A stand apparatus for diagnosing calibration of an X-ray dosimeter, characterized by: An aperture for calibrating an X-ray dosimeter according to any one of claims 1-2 specifically includes a lateral movement assembly (1) located at the bottom, an axial rotation assembly (2) connected above the lateral movement assembly (1), and a vertical height adjustment assembly (3) fixed above the axial rotation assembly (2). The lateral movement component (1) includes a base (1-1), two steel guide rails (1-8) fixed at the front and rear positions on the upper surface of the base (1-1), and a slider (1-4) slidably disposed in the rails of the steel guide rails (1-8). The sliders (1-4) are fixed with nuts (1-7) to each other. A lead screw (1-3) adapted to the nut (1-7) is rotatably disposed at the upper middle position of the base (1-1). The axial rotation assembly (2) includes a connecting plate (2-1), a top plate (2-6) located above the connecting plate (2-1), and a rotating shaft (2-5) passing through the connecting plate (2-1) and the top plate (2-6). A connecting rod (2-4) is fixed to the top of the rotating shaft (2-5), and a fastening screw (2-3) passes through the inside of the connecting rod (2-4). The vertical height adjustment component (3) includes two slots (3-1) arranged in a left-right mirror symmetrical arrangement, an inverted triangular block (3-4) that slides up and down on one side of the slots (3-1) close to each other, and a crossbeam (3-3) fixed to the top of the inverted triangular block (3-4).

4. A support device for calibrating a diagnostic X-ray dosimeter according to claim 3, characterized in that: The base (1-1) has support seats (1-2) fixed on the top left and right sides. The support seats (1-2) are equipped with bearings that adapt to the rotation of the non-helical sections on the left and right sides of the lead screw (1-3).

5. A support device for calibrating a diagnostic X-ray dosimeter according to claim 3, characterized in that: A slider lock (1-6) is fixed on the front surface of the slider (1-4), and the slider lock (1-6) consists of a fixing plate fixed on the front surface of the slider (1-4) and an alloy screw that passes through the inside of the fixing plate. The rear end of the alloy screw contacts the front surface of the base (1-1) and is used to lock the slider (1-4) after it slides to the designated position.

6. A support device for calibrating a diagnostic X-ray dosimeter according to claim 3, characterized in that: The right end of the lead screw (1-3) passes through the support base (1-2) and is connected to the rocker arm (1-5). The top of the slider (1-4) is connected to the bottom surface of the connecting plate (2-1).

7. A support device for calibrating a diagnostic X-ray dosimeter according to claim 3, characterized in that: The connecting plate (2-1) has multiple threaded holes arranged in a ring array inside, allowing the fastening screw (2-3) to pass through the arc-shaped sliding groove (2-2) and be screwed in. The bottom end of the rotating shaft (2-5) is rotatably connected to the top surface of the connecting plate (2-1). The central area inside the top plate (2-6) has a circular hole with a diameter larger than that of the rotating shaft (2-5).

8. A support device for calibrating a diagnostic X-ray dosimeter according to claim 3, characterized in that: The bottom end of the slot (3-1) is fixedly connected to the left and right sides of the upper surface of the top plate (2-6). The slots (3-1) are provided with sliding grooves on the sides that are close to each other. The ends of the hand-tightening bolts (3-2) that are far apart from each other are rotatably connected with rubber sliders that are adapted to the sliding grooves.

9. A support device for calibrating a diagnostic X-ray dosimeter according to claim 3, characterized in that: The top surface of the crossbeam (3-3) is fixedly connected to the bottom surface of the aperture back groove (4-1).

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