CT (Computed Tomography) detection equipment
By using sliders and clampers to connect the light tube and detector in the CT detection equipment, the torque and deflection problems caused by weight imbalance in traditional CT detection modules are solved, and the detection accuracy and slide rail life are improved.
Patent Information
- Application Number
- CN202420660092.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-01
AI Technical Summary
The light tubes and detectors in traditional CT detection modules are heavy, which causes the slide rail to generate a large torque, affecting the detection accuracy and the slide rail life.
The design light pipe and detector are both installed on the slide rail assembly, and are connected by the slider and the clamp. The clamp can loosen or hold the slide rail, adjust the relative distance between the light pipe and the detector and lock it on the slide rail. Avoid torque and deflection caused by weight imbalance.
It improves the service life and detection accuracy of the slide rail, ensures that the light pipe and detector maintain accurate relative orientation during operation, and improves detection accuracy.
Smart Images
Figure CN222299530U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of CT detection, in particular to a CT detection device. Background Art
[0002] Industrial CT (Computed Tomography) systems are widely used because they have both direct digital X-ray photography and computer tomography imaging, such as non-destructive testing of equipment or components in industry. The detection process mainly involves first irradiating the equipment or component to be detected through a light tube, and then receiving the rays that pass through the equipment or component to be detected and converting them into digital images. Under the control of a mechanical drive structure, the light tube and the detector continuously move on the slide rail to adjust the relative distance and thus control the magnification, thereby achieving irradiation and imaging of the equipment or component to be detected, and finally obtaining the detection results by reconstructing and analyzing the image. The light tube and detector in a traditional CT detection module are heavy, which can easily cause the slide rail to generate a large torque, affecting the spatial position accuracy of the light tube and the detector, and thus affecting the detection accuracy, and also reducing the life of the slide rail. Utility Model Content
[0003] Based on this, it is necessary to provide a CT detection device to improve the detection accuracy and the service life of the slide rail.
[0004] A CT detection device, comprising:
[0005] A base, the base is in a disc shape and is provided with a slide rail assembly;
[0006] A light pipe, slidably connected to the slide rail assembly via a first slider and a first clamp, the light pipe being used to emit detection light to the object to be detected;
[0007] A detector is slidably connected to the slide rail assembly through a second slider and a second clamp, the light pipe and the detector are arranged opposite to each other and spaced apart, and the detector is used to receive the detection light emitted by the light pipe;
[0008] The first clamp and the second clamp are actuatable to loosen or tighten the slide rail in the slide rail assembly.
[0009] In the CT detection equipment provided in the present application, the light tube and the detector are both arranged on the slide rail assembly, and can be moved relatively along the slide rail of the slide rail assembly by the slider to adjust the relative distance between the two, thereby adjusting the magnification. By setting a clamp on the light tube and the detector, after the position adjustment of the light tube and the detector along the track direction is completed, the two can hold the slide rail tightly through the clamp to prevent the light tube and the detector from generating a large torque on the slide rail through the slider due to weight imbalance, which can reduce the damage to the slide rail and help to increase the service life of the slide rail; at the same time, after the clamp is used to hold the slide rail tightly, the light tube and the detector can be firmly locked on the slide rail to prevent the two from deflecting relative to the slide rail due to weight imbalance and affecting the detection accuracy, so that the light tube and the detector always maintain an accurate relative orientation during operation, which also helps to improve the detection accuracy of the equipment.
[0010] In one embodiment, the slide rail assembly includes a first slide rail group and a second slide rail group spaced apart, the first slide rail group and the second slide rail group respectively include at least two slide rails, the slide rails of the first slide rail group are arranged in parallel with the slide rails of the second slide rail group; the light tube and the different slide rails of the first slide rail group are slidingly connected through the first slider and the first clamp; the detector and the different slide rails of the second slide rail group are slidingly connected through the second slider and the second clamp.
[0011] In one embodiment, the number of the first clamps is the same as the number of slide rails of the first slide rail group, and one of the first clamps is provided on each slide rail of the first slide rail group; the number of the second clamps is the same as the number of slide rails of the second slide rail group, and one of the second clamps is provided on each slide rail of the second slide rail group.
[0012] In one embodiment, two first sliders and one first clamp are respectively connected to each slider of the first slider group, and the first clamp on the same slider is located between the two first sliders; two second sliders and one second clamp are respectively connected to each slider of the second slider group, and the second clamp on the same slider is located between the two second sliders.
[0013] In one embodiment, the bottom of the light pipe includes a first base, the bottom of the detector includes a second base, each of the first sliders and the first clamp is fixed to the bottom of the first base, and each of the second sliders and the second clamp is fixed to the bottom of the second base.
[0014] In one embodiment, the base includes a first annular disk, a hollow area is formed in the middle of the first annular disk, and the first slide rail group and the second slide rail group are fixed to the same surface of the first annular disk and are located on opposite sides of the hollow area.
[0015] In one embodiment, the base further includes a second annular disk, the first annular disk is disposed on the second annular disk, and the first annular disk can rotate around the axial direction of the second annular disk.
[0016] In one embodiment, the first clamp and the second clamp are respectively sleeved on the slide rails in the slide rail assembly.
[0017] In one embodiment, the first clamp and the second clamp are pneumatic clamps.
[0018] In one embodiment, the base is provided with a driving assembly, which includes a servo motor and a lead screw. The servo motor is connected to the light tube and the detector through the lead screw, and the servo motor is used to drive the lead screw to drive the light tube and the detector to move along the slide rail of the slide rail assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:
[0020] Figure 1 A three-dimensional diagram of a CT detection device provided in one embodiment of the present application;
[0021] Figure 2 A side view of a CT detection device provided in one embodiment of the present application.
[0022] Detection device 10; first annular disc 101; second annular disc 102; hollow area K; light pipe 11; first base 110; first slider 112; first clamp 114; detector 12; second base 120; second slider 122; second clamp 124; first slide rail group 21; second slide rail group 22; servo motor 31; lead screw 32 DETAILED DESCRIPTION
[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0029] Industrial CT (industrial computerized tomography) refers to nuclear imaging technology used in industry. Its basic principle is based on the attenuation and absorption characteristics of radiation in the object being detected. The absorption ability of a substance to radiation is related to the properties of the substance. Therefore, by using the attenuation law and distribution of X-rays or gamma rays with a certain energy and intensity emitted by radioactive nuclides or other radiation sources in the object being detected, it is possible to obtain detailed information inside the object through the detector 12, and finally display it in the form of an image using computer information processing and image reconstruction technology. The commonly used detectors 12 in industrial CT are mainly high-resolution CMOS semiconductor chips, flat panel detectors 12 and scintillation detectors 12. Semiconductor chips have the smallest pixel size and the largest number of detection units, and the pixel size can be as small as about 10μm. Flat panel detectors 12 are usually made of amorphous silicon or amorphous selenium with a surface covered with hundreds of microns of scintillation crystals, with a pixel size of about 127μm, and its image quality is close to that of film photography. The advantage of the scintillation detector 12 is that the detection efficiency is high, especially under high energy conditions, it can achieve a dynamic range of 16 to 20 bits, and the readout speed is in the microsecond level. Its main disadvantage is that the pixel size is large, and its adjacent spacing (pitch) is generally ≥ 0.1 mm.
[0030] During the detection process, the radiation source of the light tube 11 is mainly used to irradiate the device 10 or component (the object to be detected). The detector 12 receives the rays that pass through the device 10 or component to be detected on the other side and converts them into digital images. Under the control of the mechanical drive structure, the light tube 11 and the detector 12 can continuously move on the slide rail and rotate relative to the object to be detected to adjust the relative distance and control the magnification, so as to achieve 360-degree irradiation and imaging of the device 10 or component to be detected, and finally obtain the detection result by reconstructing and analyzing the image. The light tube 11 and the detector 12 in the traditional CT detection module are heavy, which can easily cause the slide rail to generate a large torque, affecting the spatial position accuracy of the light tube 11 and the detector 12, thereby affecting the detection accuracy, and also reducing the life of the slide rail.
[0031] refer to Figure 1 and Figure 2In order to solve the above problems, the embodiment of the present application provides a CT detection device 10, including: a base, which is in a disc shape and is provided with a slide rail assembly; a light pipe 11, which is slidably connected to the slide rail assembly through a first slider 112 and a first clamp 114, and the light pipe 11 is used to emit detection light to the object to be detected; a detector 12, which is slidably connected to the slide rail assembly through a second slider 122 and a second clamp 124, the light pipe 11 and the detector 12 are arranged opposite to each other and at intervals, and the detector 12 is used to receive the detection light emitted by the light pipe 11; the first clamp 114 and the second clamp 124 can be driven to loosen or clamp the slide rail in the slide rail assembly.
[0032] In the CT detection device 10, the light pipe 11 and the detector 12 are both arranged on the slide rail assembly, and can be relatively moved along the slide rail of the slide rail assembly by a slider to adjust the relative distance between the two, thereby adjusting the magnification. In general use, the CT detection device 10 needs to be erected. Since the light pipe 11 and the detector 12 are heavy, it is easy for the two to generate a large torque on the slide rail through the slider due to weight imbalance, causing the slider to cause deformation and other structural damage to the slide rail. By arranging a clamp on the light tube 11 and the detector 12, after the position adjustment of the light tube 11 and the detector 12 along the track direction is completed, the two can clamp the slide rail through the clamp, so that the light tube 11 and the detector 12 can be more closely locked on the slide rail with the help of the clamp, which helps to avoid damage to the slide rail caused by unbalanced weight and improve the service life of the slide rail; at the same time, after the slide rail is clamped by the clamp, the light tube 11 and the detector 12 can be firmly locked on the slide rail, avoiding the deflection of the two relative to the slide rail due to unbalanced weight and affecting the detection accuracy, so that the light tube 11 and the detector 12 always maintain an accurate relative orientation during operation, which helps to improve the detection accuracy of the equipment.
[0033] The first clamp 114 and the second clamp 124 may be pneumatic clamps, and the driving mechanism of the pneumatic clamp may be fixed to the light pipe 11 and the detector 12 together with the first clamp 114 and the second clamp 124, respectively. The first clamp 114 and the second clamp 124 may clamp or release the slide rail under the action of the driving mechanism. For example, when the light pipe 11 and the detector 12 are driven by the driving assembly and move along the slide rail to the expected position, the first clamp 114 and the second clamp 124 may clamp the slide rail under the action of the driving mechanism of the clamp, so that the light pipe 11 and the detector 12 will not deflect due to the gap between the slider and the slide rail and the imbalance of gravity.
[0034] The clamp has two basic functions: clamping and braking. The clamp adopts the basic friction principle and clamps through the friction force generated by the friction plate and the side of the guide rail, thereby holding the guide rail tightly. The clamp has a wedge block structure, which applies force against the side of the guide rail through the wedge block structure. When the clamp uses an air source as a power source, the gas enters from the air inlet of the clamp, pushing the piston inside the clamp to move and generate thrust, thereby pushing the wedge block to move. When the wedge block moves, the roller pushes the friction block to move, so that it is tightly pressed against the side of the guide rail, generating positive pressure, and then generating friction to achieve the clamping and braking functions. The wedge block has a force-increasing effect, which can generate a large positive pressure between the friction block and the side of the guide rail, thereby generating a large friction force, thereby better achieving the clamping and braking functions. When gas enters from the outlet, it pushes the piston to move, and the wedge block returns to its original position under the force of the spring. The friction block breaks contact with the side of the guide rail, and the clamp exits the clamping or braking working state, thus completing the entire action of clamping the guide rail to releasing it.
[0035] In one embodiment, the rail assembly includes a first rail group 21 and a second rail group 22 spaced apart, the first rail group 21 and the second rail group 22 each including at least two rails, wherein each rail is a linear rail, and the rails of the first rail group 21 and the rails of the second rail group 22 are arranged in parallel. For example, the number of rails of the first rail group 21 and the second rail group 22 is the same and one-to-one corresponding, and the rails of the first rail group 21 and the corresponding rails of the second rail group 22 are located on the same straight line. The emitting surface of the light pipe 11 and the receiving surface of the detector 12 are spaced apart and face each other, and the two can slide on the rails of the first rail group 21 and the second rail group 22 to approach or move away from each other in the same direction.
[0036] The method of driving the light pipe 11 and the detector 12 to move on the slide rail can adopt any common method. In one embodiment, the base is provided with a driving assembly, and the driving assembly includes a servo motor 31 and a lead screw 32. The servo motor 31 is connected to the light pipe 11 and the detector 12 through the lead screw 32. The servo motor 31 is used to drive the lead screw 32 to move telescopically, so as to drive the light pipe 11 and the detector 12 to move along the slide rail of the slide rail assembly. The base is provided with two groups of servo motors 31 and lead screws 32, one group of servo motors 31 and lead screws 32 is used to drive the light pipe 11 to move, and the other group is used to drive the detector 12 to move. The lead screw 32 is connected between the output end of the servo motor 31 and the light pipe 11 and the detector 12. The servo motor 31 in this embodiment may have a braking function and is equipped with a high-precision grating ruler, which can accurately control and feedback the current position of the light pipe 11 and the detector 12.
[0037] The light pipe 11 and the different rails of the first rail group 21 are slidably connected through the first slider 112 and the first clamp 114; the detector 12 and the different rails of the second rail group 22 are slidably connected through the second slider 122 and the second clamp 124. The first clamp 114 and the second clamp 124 are respectively sleeved on the rails in the rail assembly. For example, the rails of the first rail group 21 and the second rail group 22 are I-shaped in cross section, and the first slider 112 and the second slider 122 can slidably wrap the rails from one side and be clamped on the I-shaped waist of the rails to form a sleeved rail relationship; similarly, the first clamp 114 and the second clamp 124 are also sleeved on the corresponding rails.
[0038] The number of the first clamps 114 is the same as the number of the slide rails of the first slide rail group 21, and a first clamp 114 is provided on each slide rail of the first slide rail group 21; the number of the second clamps 124 is the same as the number of the slide rails of the second slide rail group 22, and a second clamp 124 is provided on each slide rail of the second slide rail group 22.
[0039] In one embodiment, two first sliders 112 and a first clamp 114 are connected to each slider of the first slider group 21, and the first clamp 114 connected to the same slider is located between the two first sliders 112; two second sliders 122 and a second clamp 124 are connected to each slider of the second slider group 22, and the second clamp 124 connected to the same slider is located between the two second sliders 122. The number of first sliders 112, second sliders 122, first clamps 114 and second clamps 124, as well as the relative distribution order of sliders and clamps on the same slider can be determined according to actual needs, and no specific limitation is made here.
[0040] The bottom of the light pipe 11 includes a first base 110, the bottom of the detector 12 includes a second base 120, and each first slider 112 and the first clamp 114 are fixed to the bottom of the first base 110, that is, fixed to the side opposite to the light pipe 11. Each second slider 122 and the second clamp 124 are fixed to the bottom of the second base 120, that is, fixed to the side opposite to the detector 12. In the above embodiment, the two sets of lead screws 32 in the driving assembly can be connected to the first base 110 and the second base 120 respectively.
[0041] Continue to refer Figure 1 The base of the CT detection device 10 includes a first annular disk 101, a hollow area K is formed in the middle of the first annular disk 101, and the rails of the first rail group 21 and the second rail group 22 are fixed to the same surface of the first annular disk 101 and are located on opposite sides of the hollow area K. The hollow area K can be used to pass through the object to be detected and provide a larger placement space.
[0042] Further, the base also includes a second annular disk 102, the first annular disk 101 is relatively rotatably connected to the second annular disk 102, the axial direction of the first annular disk 101 can be arranged parallel to the axial direction of the second annular disk 102, and the first annular disk 101 can rotate around the axial direction of the second annular disk 102. For example, the CT detection device 10 also includes a rotation drive mechanism, and the rotation drive mechanism is fixed to the first annular disk 101 or the second annular disk 102 to drive the first annular disk 101 to rotate relatively.
[0043] During the detection process, the object to be detected is placed between the light tube 11 and the detector 12. The relative distance between the light tube 11 and the detector 12 is controlled by the driving component to obtain a reasonable magnification. Then, the first annular disk 101 can be driven to rotate so that the light tube 11 and the detector 12 can be synchronously rotated 360 degrees around the object to be detected to obtain its all-round structural information. Then, a 3D image of the object to be detected is reconstructed in conjunction with a matching information processing algorithm.
[0044] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0045] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A CT detection device, characterized in that: include: A base, the base is in a disc shape and is provided with a slide rail assembly; A light pipe, slidably connected to the slide rail assembly via a first slider and a first clamp, the light pipe being used to emit detection light to the object to be detected; A detector is slidably connected to the slide rail assembly through a second slider and a second clamp, the light pipe and the detector are arranged opposite to each other and spaced apart, and the detector is used to receive the detection light emitted by the light pipe; The first clamp and the second clamp are actuatable to loosen or tighten the slide rail in the slide rail assembly.
2. The CT detection device according to claim 1, characterized in that: The slide rail assembly includes a first slide rail group and a second slide rail group spaced apart, the first slide rail group and the second slide rail group respectively include at least two slide rails, the slide rails of the first slide rail group are arranged in parallel with the slide rails of the second slide rail group; the light tube is slidably connected to the different slide rails of the first slide rail group through the first slider and the first clamp; the detector is slidably connected to the different slide rails of the second slide rail group through the second slider and the second clamp.
3. The CT detection device according to claim 2, characterized in that: The number of the first clamps is the same as the number of slide rails of the first slide rail group, and each slide rail of the first slide rail group is provided with a first clamp; the number of the second clamps is the same as the number of slide rails of the second slide rail group, and each slide rail of the second slide rail group is provided with a second clamp.
4. The CT detection device according to claim 2, characterized in that: Two first sliders and one first clamp are respectively connected to each slider of the first slider group, and the first clamp on the same slider is located between the two first sliders; two second sliders and one second clamp are respectively connected to each slider of the second slider group, and the second clamp on the same slider is located between the two second sliders.
5. The CT detection device according to claim 2, characterized in that: The bottom of the light pipe includes a first base, the bottom of the detector includes a second base, each of the first sliders and the first clamp is fixed to the bottom of the first base, and each of the second sliders and the second clamp is fixed to the bottom of the second base.
6. The CT detection device according to claim 2, characterized in that: The base comprises a first annular disc, a hollow area is formed in the middle of the first annular disc, and the first slide rail group and the second slide rail group are fixed to the same surface of the first annular disc and are located at opposite sides of the hollow area.
7. The CT detection device according to claim 6, characterized in that: The base also includes a second annular disk, the first annular disk is arranged on the second annular disk, and the first annular disk can rotate around the axial direction of the second annular disk.
8. The CT detection device according to claim 1, characterized in that: The first clamp and the second clamp are respectively sleeved on the slide rails in the slide rail assembly.
9. The CT detection device according to claim 1, characterized in that: The first clamp and the second clamp are pneumatic clamps.
10. The CT detection device according to claim 1, characterized in that: The base is provided with a driving assembly, which includes a servo motor and a lead screw. The servo motor is connected to the light pipe and the detector through the lead screw. The servo motor is used to drive the lead screw to drive the light pipe and the detector to move along the slide rail of the slide rail assembly.