A resolution test mechanism for an x-ray imaging apparatus

Abstract

This utility model relates to the field of X-ray imaging technology, specifically to a resolution testing mechanism for X-ray imaging equipment. It includes a ray tube, a three-axis adjustment module, and a lifting module mounted on a base frame. A detector is fixedly connected to the output end of the lifting module. A wire pair is fixedly connected to the output end of the three-axis adjustment module. The detector is positioned directly above the ray tube. The wire pair is positioned between the detector and the ray tube. The lifting module drives the detector to move up and down, adjusting the relative distance between the detector, the ray tube, and the wire pair. The three-axis adjustment module adjusts the position of the wire pair in the X, Y, and Z axes. This resolution testing mechanism has a simple structure, is easy to operate, and possesses excellent testing accuracy and sensitivity. It solves the problems of complex structure, high operational difficulty, and low detection accuracy of existing resolution testing mechanisms.

Description

Technical Field

[0001] This utility model relates to the field of X-ray imaging technology, and in particular to a resolution testing mechanism for X-ray imaging equipment. Background Technology

[0002] X-ray imaging, as an effective non-destructive testing method, plays a vital role in materials science, industrial manufacturing, aerospace, and modern medicine. Spatial resolution is one of the key indicators for evaluating the quality of X-ray imaging equipment; it reflects the equipment's ability to resolve fine structures, directly affecting image clarity and detail. High-resolution X-ray imaging equipment can more accurately detect minute defects and foreign objects, making it suitable for more complex and delicate inspection needs. Therefore, to ensure high image clarity from X-ray imaging equipment, its resolution needs to be tested before it is put into market use. Furthermore, since the resolution of X-ray imaging equipment decreases over time, it is also necessary to periodically test its resolution after it is put into market use. However, existing detection devices are structurally complex, difficult to operate, and have relatively low accuracy and sensitivity.

[0003] This invention provides a resolution testing mechanism for X-ray imaging equipment, which solves the problems of complex structure, high operation difficulty, and low detection accuracy of existing resolution testing mechanisms. Utility Model Content

[0004] The purpose of this invention is to provide a resolution testing mechanism for X-ray imaging equipment, so as to solve the problems of complex structure, high operation difficulty and low detection accuracy of existing resolution testing mechanisms.

[0005] The technical solution of this utility model is: a resolution testing mechanism for X-ray imaging equipment, including a base frame, an X-ray tube, a three-axis adjustment module, and a lifting module disposed on the base frame;

[0006] A detector is fixedly connected to the output end of the lifting module; a wire pair is fixedly connected to the output end of the three-axis adjustment module.

[0007] The detector is positioned directly above the ray tube; the wire pair is positioned between the detector and the ray tube.

[0008] The lifting module drives the detector to move up and down, and is used to adjust the relative distance between the detector and the X-ray tube and the wire pair card; the three-axis adjustment module is used to adjust the position of the wire pair card in the X-axis, Y-axis and Z-axis directions.

[0009] Preferably, the lifting module adopts a combination of a servo motor and a lead screw.

[0010] Preferably, the base frame is further provided with guide columns; the output end of the lifting module is connected to the guide columns through guide rail sliders, and moves up and down along the direction of the guide columns under the drive of the lifting module.

[0011] Preferably, U-shaped grooves are symmetrically arranged on both sides of the guide post along its length to form bosses on the guide post;

[0012] One end of the guide rail slider is fixedly connected to the output end of the lifting module, and the other end is provided with a groove that matches the shape of the boss, so that the guide rail slider is inserted into the guide post.

[0013] Preferably, a locking guide rail slider is also fixedly mounted on the base frame, and the three-axis adjustment module is mounted on the locking guide rail slider.

[0014] Preferably, a miniature pressure sensor is provided on the lower end surface of the wire pair card, near the position where the wire pair card connects to the output end of the triaxial adjustment module.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] (1) The present invention provides a resolution testing mechanism for X-ray imaging equipment. This resolution testing mechanism can achieve high-precision control of the relative distance between the detector and the X-ray tube, and the position of the line pair card through the lifting module and the three-axis adjustment module, thereby improving the accuracy and precision of the test of the resolution testing mechanism, and giving the resolution testing mechanism excellent test accuracy and sensitivity. In addition, through the cooperative design of the guide column and the guide rail slider and the use of the locking guide rail slider, the positional shift and shaking of the detector and the line pair card during the test can be effectively avoided, ensuring the stability of the test process and helping to reduce test errors. At the same time, by monitoring the relative position of the line pair card and the X-ray tube in real time through the miniature pressure sensor, the maintenance cost of the resolution testing mechanism and the risk of test interruption can be effectively reduced. The structure of the resolution testing mechanism is simpler and the operation is more convenient. It solves the problems of complex structure, high operation difficulty and low detection accuracy of the existing resolution testing mechanisms in the prior art. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the resolution testing mechanism for the X-ray imaging equipment described in this utility model;

[0019] Figure 2 This is a front view of the resolution testing mechanism for the X-ray imaging equipment described in this utility model;

[0020] Figure 3 This is an enlarged view of the Q region in the main view of the resolution testing mechanism for the X-ray imaging equipment described in this utility model;

[0021] Figure 4 This is an enlarged view of region P in the three-dimensional structural schematic diagram of the resolution testing mechanism for the X-ray imaging equipment described in this utility model;

[0022] The components include: 1. Base frame; 2. X-ray tube; 3. Detector; 4. Lifting module; 5. Three-axis adjustment module; 6. Wire pair clamp; 7. Guide column; 71. U-shaped groove; 8. Guide rail slider; 81. Groove; 9. Locking guide rail slider; 10. Miniature pressure sensor. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to specific embodiments:

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "side", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] A resolution testing mechanism for an X-ray imaging device, such as Figure 1As shown, the system includes a base frame 1, an X-ray tube 2, a three-axis adjustment module 5, and a lifting module 4 mounted on the base frame 1. The X-ray tube 2 is fixedly mounted on the base frame 1 via connectors and serves as the radiation source for X-ray imaging, emitting X-rays. The X-ray tube 2 is detachable. A detector 3 is fixedly connected to the output end of the lifting module 4; the lifting module 4 drives the detector 3 to move up and down, thereby precisely controlling the relative position of the detector 3. A wire pair 6 is fixedly connected to the output end of the three-axis adjustment module 5, used for precise adjustment of the position of the wire pair 6 in the X, Y, and Z axes to adapt to different testing requirements and position adjustments. In terms of spatial structure, detector 3 is positioned directly above X-ray tube 2, and line pair card 6 is positioned between detector 3 and X-ray tube 2. The lifting module 4 drives detector 3 to move up and down, adjusting the relative distance between detector 3, X-ray tube 2, and line pair card 6, thereby adjusting the magnification ratio of the image to meet distance requirements under different testing conditions. Simultaneously, the three-axis adjustment module 5 precisely controls the position of line pair card 6 in the X, Y, and Z axes, ensuring that different testing areas on line pair card 6 can be used to accurately test the resolution of X-ray tube 2.

[0026] like Figure 2 As shown, a locking guide rail slider 9 is fixedly mounted on the base frame 1, and the three-axis adjustment module 5 is mounted on the locking guide rail slider 9. The locking guide rail slider 9 has a specific structure that not only provides a stable mounting platform for the three-axis adjustment module 5, but also allows for quick installation and removal of the three-axis adjustment module 5 on the base frame 1. It also facilitates initial adjustment and fixation of the three-axis adjustment module 5. When position adjustment is required, the locking device on the locking guide rail can be loosened, the three-axis adjustment module 5 can be moved to a suitable position, and then locked again to ensure the stability of the three-axis adjustment module 5 during operation.

[0027] like Figure 3 As shown, a miniature pressure sensor 10 is installed on the lower end face of the wire pair card 6, near the position where the wire pair card 6 connects to the output end of the three-axis adjustment module 5. The miniature pressure sensor 10 can monitor the pressure changes between the wire pair card 6 and the X-ray tube 2 in real time, and determine whether contact has occurred between them based on the pressure data fed back by the miniature pressure sensor 10. When the position of the wire pair card 6 is precisely adjusted using the three-axis adjustment module 5, the miniature pressure sensor 10 can provide early warning, effectively preventing damage to the wire pair card 6 or the X-ray tube 2 due to excessive descent and potential contact or collision. This helps reduce maintenance costs and test interruption risks in the resolution testing facility. The three-axis adjustment module 5 can achieve precise position adjustment of the wire pair card 6 in the X, Y, and Z axes, with an adjustment accuracy down to the micrometer level, meeting the requirements of high-precision resolution testing.

[0028] The lifting module 4 employs a combination of a servo motor and a lead screw. The servo motor, as the power source, features high precision and high response speed, enabling precise control of the lead screw's rotation, thus ensuring the accuracy and stability of the detector 3's position adjustment. In other embodiments, the lifting module 4 can also utilize any other module capable of lifting motion, such as a combination of a cylinder, motor, and rack and pinion. A guide post 7 is also provided on the base frame 1, positioned on one side of the lifting module 4 and parallel to it. The output end of the lifting module 4 is connected to the guide post 7 via a guide rail slider 8, and moves vertically along the direction of the guide post 7 under the drive of the lifting module 4; specifically, as shown... Figure 4 As shown, U-shaped grooves 71 are symmetrically provided on both sides of the guide post 7 along its length. These U-shaped grooves 71 create a boss structure on the end face of the guide post 7 away from the base frame 1. One end of the guide rail slider 8 is firmly fixed to the output end of the lifting module 4 to ensure stable operation; the other end has a groove 81 that matches the shape of the boss on the guide post 7. This boss structure and groove 81 design allow the guide rail slider 8 to be inserted into the guide post 7. Furthermore, under the driving action of the lifting module 4, the guide rail slider 8 can smoothly move up and down along the direction of the guide post 7. The main function of the guide post 7 is to guide and limit movement, ensuring that the detector 3 does not deviate or shake during lifting, and ensuring the relative positional accuracy between the detector 3, the X-ray tube 2, and the wire pair card 6. In other embodiments, one end of the guide rail slider 8 is fixedly connected to the output end of the lifting module 4, and the other end can also be provided with a pulley or a V-shaped boss. Correspondingly, a guide rail is provided on the guide post 7 along its length, and the pulley or V-shaped boss is embedded in the guide rail and moves along the guide rail.

[0029] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A resolution test mechanism for an X-ray imaging apparatus, characterized by, Includes a base frame (1), a ray tube (2) mounted on the base frame (1), a three-axis adjustment module (5), and a lifting module (4); The output end of the lifting module (4) is fixedly connected to a detector (3); the output end of the three-axis adjustment module (5) is fixedly connected to a wire pair (6). The detector (3) is positioned directly above the ray tube (2); the wire pair (6) is positioned between the detector (3) and the ray tube (2); The lifting module (4) drives the detector (3) to move up and down, and is used to adjust the relative distance between the detector (3) and the X-ray tube (2) and the wire pair card (6); the three-axis adjustment module (5) is used to adjust the position of the wire pair card (6) in the X-axis, Y-axis and Z-axis directions.

2. The resolution test mechanism for an x-ray imaging apparatus according to claim 1, characterized by: The lifting module (4) adopts a combination of servo motor and lead screw.

3. The resolution test mechanism for an X-ray imaging apparatus according to claim 2, characterized in that: The base frame (1) is also provided with a guide column (7); the output end of the lifting module (4) is connected to the guide column (7) through the guide rail slider (8), and moves up and down along the direction of the guide column (7) under the drive of the lifting module (4).

4. The resolution test mechanism for an x-ray imaging apparatus according to claim 3, characterized in that: The guide post (7) has symmetrically arranged U-shaped grooves (71) on both sides along its length direction, which are used to form bosses on the guide post (7); One end of the guide rail slider (8) is fixedly connected to the output end of the lifting module (4), and the other end is provided with a groove (81) that matches the shape of the boss, so that the guide rail slider (8) is inserted into the guide post (7).

5. The resolution test mechanism for an x-ray imaging apparatus according to claim 1, characterized by: A locking guide slider (9) is also fixedly installed on the base frame (1), and the three-axis adjustment module (5) is installed on the locking guide slider (9).

6. The resolution test mechanism for an x-ray imaging apparatus according to claim 1, characterized by: A miniature pressure sensor (10) is provided on the lower end surface of the line pair card (6) and near the position where the line pair card (6) is connected to the output end of the triaxial adjustment module (5).

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