Track-mounted oral CT device

Abstract

The present invention discloses a track-type oral CT device, comprising a circular track, a ball slider, a rotating body, a tube assembly, a motor assembly and a detector assembly, wherein the circular track is provided with a rack, the two ends of the top of the rotating body are connected to the circular track by sliding fit through the ball slider, the center of the rotating body and the center of the circular track are located on the same central axis, the motor assembly is installed on the rotating body, and the driving end of the motor assembly is provided with a gear for meshing with the rack, the motor assembly is used to drive the rotating body to rotate along the circular track, the tube assembly is provided at one end of the rotating body, the detector assembly is provided at the other end of the rotating body, and the tube assembly and the detector assembly are arranged opposite to each other. The track-type oral CT device has the advantages of simple structure, stable movement and low manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a track-type oral CT device. Background Art

[0002] With the development of modern medical equipment technology, new diagnostic technologies continue to emerge, providing many powerful tools for the diagnosis of oral diseases. In the field of X-ray diagnosis, there are oral dental film machines, oral panoramic machines and oral CT machines, among which the diagnosis of oral CT machines is the most accurate. The oral CT machine mainly includes components such as radiation source, detector and rotating mechanical structure. In order to facilitate the imaging of the oral CT machine, during the operation of the equipment, the rotating rod of the machine mainly uses a sprocket chain assembly to drive the rotating mechanism to realize the machine rotation function. The disadvantage is that the chain has high manufacturing precision and high processing cost. A tensioning device is required to ensure the tension of the chain. At the same time, long-term operation will cause chain wear, resulting in falling off or breaking, poor movement stability, and shaking of the rotating rod, resulting in blurred images. In addition, there is another rotating rod transmission scheme that uses synchronous pulley transmission. The disadvantages are that the external installation size is large, the transmission ratio is inaccurate, and it is easy to slip and the transmission is uneven. There is also a mechanism that drives the rocker arm to rotate through a variable speed gearbox to realize the shooting function of the oral CT machine. However, these have high manufacturing costs and are difficult to install.

[0003] The above mechanisms for realizing the rotation of the CT machine's rocker arm are complex and difficult to manufacture. During operation, each component requires a high degree of coordination and the manufacturing cost is also high. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a track-type oral CT device with stable movement.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] A track-type oral CT device comprises a circular track, a ball slider, a rotating body, a tube assembly, a motor assembly and a detector assembly, wherein the circular track is provided with a rack, and the two ends of the top of the rotating body are slidably connected with the circular track through the ball slider, the center of the rotating body and the center of the circular track are located on the same central axis, and the circular track cannot rotate relative to the rotating body; the motor assembly is installed on the rotating body, and the driving end of the motor assembly is provided with a gear for meshing with the rack for transmission, and the motor assembly is used to drive the rotating body to rotate along the circular track, the tube assembly is arranged at one end of the rotating body, and the detector assembly is arranged at the other end of the rotating body, and the tube assembly and the detector assembly are arranged opposite to each other.

[0007] Furthermore, the outer side surface of the circular track is provided with an outer flange protruding outward, the inner side surface of the circular track is provided with an inner flange protruding inward, the ball slider is provided with an outer snap groove for slidingly engaging with the outer flange, and the ball slider is provided with an inner snap groove for slidingly engaging with the inner flange.

[0008] Furthermore, the rail-type oral CT device also includes a support column and a suspension arm, the suspension arm includes a hanging plate, an arc-shaped suspension rod assembly, a reinforcing rod and a circular supporting plate, the hanging plate is connected to the top of the support column, one end of the arc-shaped suspension rod assembly is connected to the hanging plate, the other end of the arc-shaped suspension plate is connected to the circular supporting plate, and the circular track is installed at the bottom of the circular supporting plate.

[0009] Furthermore, the rail-type oral CT device also includes a chair assembly, which includes a chair column and a chair seat. The chair seat is liftably installed above the chair column, and the chair seat is equipped with a seat cushion and an armrest assembly.

[0010] Furthermore, the chair assembly also includes a chair motor, a screw, a guide column and a chair slider, the chair column has a vertical hollow cavity, the chair motor is installed in the vertical hollow cavity, the chair seat includes a hollow telescopic rod, the chair slider is arranged in the telescopic rod and is connected to the guide rails on both sides of the inner wall of the telescopic rod, one end of the screw is connected to the output end of the chair motor, and the other end of the screw is movably connected to the chair slider, the guide columns are respectively provided on both sides of the interior of the chair column, the guide columns are slidably matched with the guide rails, and the chair motor is used to drive the telescopic rod to perform lifting and lowering movements along the axial direction.

[0011] Furthermore, the motor assembly is a servo motor, and the gear is installed on the output end of the servo motor.

[0012] Furthermore, the rotating body includes a rotating body shell and a rotating rod, the rotating rod is arranged inside the rotating body shell, and the rotating body shell is respectively provided with a slider through hole for the ball slider to extend out of the rotating body shell and a gear through hole for the gear to extend out of the rotating body shell; the ball tube assembly includes a fixing plate and a ball tube, the ball tube is connected to the rotating rod through the fixing plate, the rotating body shell is also provided with a ball tube opening for the ball tube to extend out of the rotating body shell, and the detector assembly includes a fixing frame and a detector, and the detector is connected to the rotating rod through the fixing frame.

[0013] Furthermore, the rotating rod is configured as a hollow square tube.

[0014] Furthermore, the support column includes a vertical rod and an arc rod, one end of the arc rod is connected to one end of the vertical rod, the upper end of the boom is arranged at the bottom of the other end of the arc rod, the other end of the vertical rod is provided with a first support rod, and the two ends of the first support rod are respectively vertically connected to the second support rod.

[0015] Furthermore, the bottom of the first support rod and the bottom of the second support rod are respectively provided with adjustable supporting feet.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention drives the gear to rotate through a motor assembly, and the gear drives the rotating body to move along a circular track, so that the light emitted by the tube assembly continuously and smoothly falls on the imaging center of the detector assembly. During the movement of the rotating body, the present invention adopts a ball slider to cooperate with the circular track for movement. Since the contact surface of the ball slider and the circular track is a spherical contact, very little friction is generated between them, and the matching gap is also very small, which ensures that there is no large matching gap when the rotating body performs circular motion, and can reduce the vibration amplitude, so that the rotating body can run smoothly, ensure that the oral CT imaging process is not affected, and make the captured image clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the schematic diagrams of the track-type oral CT device provided by the present invention;

[0019] Figure 2 The second schematic diagram of the track-type oral CT device provided by the present invention shows the outer shell of the rotating body;

[0020] Figure 3 A front view of the track-type oral CT device provided by the present invention;

[0021] Figure 4 for Figure 3 Sectional view of AA in the middle;

[0022] Figure 5 for Figure 4 A local enlarged schematic diagram of point I in the middle;

[0023] Figure 6 for Figure 4 Cross-sectional view of the middle BB;

[0024] Figure 7 An exploded view of the boom, rotating body and circular track provided by the present invention;

[0025] Figure 8 A schematic diagram of the cooperation between the rotating body and the circular track provided by the present invention;

[0026] Fig. 9A partial schematic diagram of a circular track provided by the present invention;

[0027] Fig.10 A schematic diagram of a ball slider provided by the present invention;

[0028] Fig.11 A cross-sectional view of a chair assembly provided for the present invention.

[0029] In the figure: 10, vertical rod; 11, arc rod; 12, first support rod; 13, second support rod; 14, adjustable support foot; 20, suspension arm; 201, hanging plate; 202, arc suspension rod; 203, reinforcement rod; 204, circular support plate; 30, rotating body; 301, rotating body shell; 302, rotating rod; 40, circular track; 401, rack; 402, outer flange; 403, inner flange; 50, ball slider; 501, outer buckle groove; 502, inner buckle groove; 60, motor assembly; 601, servo motor ; 602, gear; 70, tube assembly; 701, tube; 702, fixing plate; 80, detector assembly; 801, detector; 802, fixing frame; 90, chair assembly; 901, chair column; 902, chair seat; 9021, telescopic rod; 9022, cushion support rod; 903, cushion; 904, armrest assembly; 9041, first armrest; 9042, second armrest; 905, chair motor; 906, screw; 907, chair slider; 908, guide column; 909, guide rail; 9010, chair base. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", "vertical", "top", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "one", "another" and the like are used to distinguish similar elements, and these terms and other similar terms are not intended to limit the scope of the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be internally connected between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In each of the drawings, the same or corresponding elements are marked with corresponding figure numbers (for example, the elements marked with "1XX" and "2XX" have the same structure and similar functions).

[0033] like Figure 1-11 As shown, the track-type oral CT device provided by the present invention comprises a circular track 40, a ball slider 50, a rotating body 30, a tube assembly 70, a motor assembly 60 and a detector assembly 80, wherein the circular track 40 is provided with a rack 401, and the two ends of the top of the rotating body 30 are slidably connected with the circular track 40 through the ball slider 50, the center of the rotating body 30 and the center of the circular track 40 are located on the same central axis, and the circular track 40 cannot rotate relative to the rotating body 30, the motor assembly 60 is installed on the rotating body 30, and the driving end of the motor assembly 60 is provided with a gear 602 for meshing and transmitting with the rack 401, the motor assembly 60 is used to drive the rotating body 30 to rotate along the circular track 40, the tube assembly 70 is arranged at one end of the rotating body 30, the detector assembly 80 is arranged at the other end of the rotating body 30, and the tube assembly 70 and the detector assembly 80 are arranged opposite to each other.

[0034] On the basis of the above, the circular track 40 is fixedly installed at the designated position, and then the corresponding components are assembled. After all parts are installed in place, in accordance with the needs of CT imaging, the motor assembly 60 starts to work, the motor assembly 60 drives the gear 602 to rotate, and the gear 602 drives the rotating body 30 to make a circular motion along the circular track 40, so that the light emitted by the tube assembly 70 continuously and steadily falls on the imaging center of the detector assembly 80. In this motion process, the ball slider 50 is the main reason to ensure that the rotating body 30 will not vibrate, because the ball slider 50 is a ball-type entry slider, and its contact surface with the circular track 40 is a spherical point contact, and there is very little friction between them, and the matching clearance is also very small, which ensures that there will be no large matching clearance when the rotating body 30 makes a circular motion, and the vibration amplitude can be reduced, so that the rotating body 30 can run smoothly. The gear 602 drives the rotating body 30 to move along the circular track 40, just as if they form a star track, which can run smoothly, so that the CT imaging process is not affected, so that the image taken is clear and there is no jumping image.

[0035] Because it is a spherical contact, the friction resistance is very small, so the motor assembly 60 adopts a low-power servo motor 601, wherein the gear 602 is installed on the output end of the servo motor 601, and the servo motor 601 drives the gear 602 to contact the rack 401 on the circular track 40, thereby driving the rotating body 30 to produce a circular motion. In addition, the servo motor 601 can adjust the speed of the servo motor 601 according to the needs of the imaging speed, and the servo motor 601 can meet the forward and reverse rotation, so that the rotating body 30 can rotate clockwise or counterclockwise. At the same time, the servo motor 601 can adjust the speed as needed under the control of the controller, so that the imaging speed is adapted to the speed of the gear 602 of the motor assembly 60, so as to meet the imaging requirements. The servo motor 601 of this embodiment is provided with two, and the two servo motors 601 are respectively installed at the two ends of the rotating body 30. The rotating body 30 is driven to rotate by the two servo motors 601, thereby improving the smoothness and stability of the movement of the rotating body 30.

[0036] As a preferred embodiment, the outer side of the circular track 40 is provided with an outer flange 402 protruding outward, the inner side of the circular track 40 is provided with an inner flange 403 protruding inward, the ball slider 50 is provided with an outer snap groove 501 for sliding engagement with the outer flange 402, and the ball slider 50 is provided with an inner snap groove 502 for sliding engagement with the inner flange 403. In this embodiment, the ball slider 50 is provided with an outer snap groove 501 and an inner snap groove 502 respectively sliding engagement with the outer flange 402 and the inner flange 403 of the circular track 40, so that the ball slider 50 has a large load bearing capacity and meets the weight requirement of the mounted rotating body 30. It should be noted that the circular track 40 and the rack 401 of this embodiment are an integral structure, wherein the rack 401 is provided along the track of the circular track 40. Of course, the rack 401 and the circular track 40 can also be separate structures, as long as the rotating body 30 can be driven to make a circular motion along the circular track 40.

[0037] As a preferred embodiment, the track-type oral CT device also includes a support column and a suspension arm 20, the suspension arm 20 includes a hanging plate 201, an arc-shaped suspension rod 202 assembly, a reinforcing rod 203 and a circular supporting plate 204, the hanging plate 201 is connected to the top of the support column, one end of the arc-shaped suspension rod 202 assembly is connected to the hanging plate 201, and the other end of the arc-shaped suspension plate 201 is connected to the circular supporting plate 204, and the circular track 40 is installed at the bottom of the circular supporting plate 204.

[0038] In this embodiment, the support column is the main component supporting the boom 20, and is the support frame for CT imaging. It is an important basis for adjusting the entire imaging level with the ground, and is an important component for realizing the working installation of the rotating body 30. The circular track 40 is fixedly installed on the boom 20. When installing the circular track 40, it is necessary to ensure that the entire circular track 40 has a high degree of roundness, and at the same time, the ball slider 50 must be assembled to the circular track 40 to ensure the installation accuracy of the ball slider 50 and the integrity of the components. After the boom 20 is installed on the support column, the rotating body 30 is assembled against the assembly hole of the ball slider 50. When assembling, attention should be paid to the problem of roundness. After assembling the swinging rotating body 30, the tube assembly 70, the motor assembly 60, the detector assembly 80, etc. are connected with bolts. The hanging plate 201 is connected to the supporting column by bolts, wherein the arc-shaped hanging rod 202 assembly includes a plurality of arc-shaped hanging rods 202, one end of which is arranged along the circumference of the hanging plate 201, and the circular track 40 is connected to the circular supporting plate 204 by bolts and positioning pins; in addition, the arc-shaped hanging rod 202 is respectively connected to the hanging plate 201 and the circular supporting plate 204 by welding, and there are a plurality of reinforcing rods 203, which are arranged between two adjacent arc-shaped hanging rods 202 to enhance the stability of the boom 20. When installing the boom 20, the requirements of flatness and roundness must be controlled first, and deformation and bending are not allowed to occur during production. Therefore, when selecting materials, the circular supporting plate 204 adopts a 10 mm thick steel plate, and the arc-shaped hanging rod 202 and the reinforcing rod 203 adopt hollow square tubes, which are convenient for reducing weight and production costs.

[0039] It should be noted that the structure of the boom 20 may also be other structures as long as the circular track 40 can be fixed on the boom 20 .

[0040] As a preferred embodiment, the track-type oral CT device further includes a chair assembly 90, which includes a chair column 901 and a chair seat 902. The chair seat 902 is installed above the chair column 901 in a liftable manner, and the chair seat 902 is provided with a cushion 903 and an armrest assembly 904. By providing a liftable chair seat 902, it is convenient to adjust the height of the human body when taking oral imaging, so that the oral cavity of patients of different heights can be accurately imaged in the imaging center of the detector 801 during imaging. In this embodiment, a chair base 9010 is provided at the bottom of the chair column 901 to enhance the stability of the chair column 901; the chair seat 902 is provided with a cushion support rod 9022 for supporting the cushion 903, and the armrest assembly 904 includes a first armrest 9041 and a second armrest 9042, wherein the first armrest 9041 is arranged to be an arc-shaped structure, one end of the first armrest 9041 is connected to the chair seat 902, and the other end of the first armrest 9041 is rotatably connected to the second armrest 9042, and the second armrest 9042 can be rotated relative to the first armrest 9041, thereby facilitating the adjustment of the position of the second armrest 9042.

[0041] Specifically, the chair assembly 90 also includes a chair motor 905, a screw 906, a guide column 908 and a chair slider 907. The chair column 901 has a vertical hollow cavity, and the chair motor 905 is installed in the vertical hollow cavity. The chair seat 902 includes a hollow telescopic rod 9021. The chair slider 907 is arranged in the telescopic rod 9021 and is connected to the guide rails 909 on both sides of the inner wall of the telescopic rod 9021. One end of the screw 906 is connected to the output end of the chair motor 905, and the other end of the screw 906 is movably connected to the chair slider 907. The guide columns 908 are respectively provided on both sides of the chair column 901. The guide columns 908 are slidably matched with the guide rails 909. The chair motor 905 is used to drive the telescopic rod 9021 to perform lifting and lowering movements along the axial direction. In this embodiment, after placing the chair under the rotating body 30, the chair motor 905 is started, and the chair motor 905 drives the screw 906 to move in the axial direction, and then drives the slider to move along the guide rail 909, so as to realize the lifting and lowering of the chair seat 902, so as to automatically adjust the patient to the correct height, so that the oral CT machine can smoothly image the teeth of the oral cavity at the center of the detector 801. In addition, the guide rail 909 of this embodiment plays a guiding role.

[0042] As a preferred embodiment, the rotating body 30 includes a rotating body shell 301 and a rotating rod 302, the rotating rod 302 is arranged inside the rotating body shell 301, the rotating body shell 301 is respectively provided with a slider through hole for the ball slider 50 to extend out of the rotating body shell 301 and a gear 602 through hole for the gear 602 to extend out of the rotating body shell 301, the ball tube assembly 70 includes a fixing plate 702 and a ball tube 701, the ball tube 701 is connected to the rotating rod 302 through the fixing plate 702, the rotating body shell 301 is also provided with a ball tube 701 mouth for the ball tube 701 to extend out of the rotating body shell 301, the detector assembly 80 includes a fixing frame 802 and a detector 801, the detector 801 is connected to the rotating rod 302 through the fixing frame 802. In this embodiment, by providing a rotating body shell 301, the rotating rod 302, the motor assembly 60, the tube assembly 70 and the detector assembly 80 are accommodated therein, so as to ensure that the rail-type oral CT device is simple and beautiful; specifically, the rotating rod 302 is configured as a hollow square tube, which can reduce the weight of the entire rotating body 30, but the overall strength is not reduced, and various circuits can be accommodated inside to achieve a simplified effect, thereby ensuring that the tube assembly 70 and the detector assembly 80 will not deform or vibrate after being mounted.

[0043] As a preferred embodiment, the support column includes a vertical rod 10 and an arc rod 11, one end of the arc rod 11 is connected to one end of the vertical rod 10, the upper end of the boom 20 is arranged at the bottom of the other end of the arc rod 11, and the other end of the vertical rod 10 is provided with a first support rod 12, and the two ends of the first support rod 12 are respectively vertically connected to the second support rod 13. By arranging the first support rod 12 and the second support rod 13 at the bottom of the support rod, the stability of the support column can be enhanced; in addition, the vertical rod 10 and the arc rod 11 of this embodiment are an integrated structure, and the support column, the first support rod 12 and the second support rod 13 are all arranged as hollow square tubes. Under the condition of ensuring the strength required for use, the requirements of its verticality and flatness are guaranteed during bending and welding, so as to reduce weight and production costs.

[0044] Specifically, the bottom of the first support rod 12 and the second support rod 13 are respectively provided with adjustable support feet 14. Among them, two adjustable support feet 14 are provided at both ends of the bottom of the first support rod 12, and one end of each of the two second support rods 13 away from the first support rod 12 is provided with an adjustable support foot 14. By using four adjustable support feet 14 at the bottom of the support column, it is convenient to adjust the level of the uneven floor at the installation site.

[0045] In summary, the track-type oral CT device provided by the present invention has the following advantages:

[0046] 1. Simple structure, stable operation, low manufacturing difficulty, long service life (durable). The previous oral CT machines generally used synchronous wheels, transmissions, clutches, pulleys and other structures, which were difficult to produce and install. They were prone to failure during use, and mechanical wear or failure after a long period of use.

[0047] 2. Fast running speed and accurate positioning. The servo motor 601 can be used to realize forward and reverse rotation through the controller, so that the rotating body 30 can run clockwise or counterclockwise, and the number of motor rotations can be accurately controlled to accurately position the rotating body 30 at the required position. The rotation speed can also be adjusted by the servo motor 601 to adjust the speed of the rotating body 30. The rocker arms driven by other methods may slip, lose steps, lag in control, or vibrate the gear box 602 during operation, thereby affecting the quality of CT imaging.

[0048] 3. Low manufacturing cost. Due to the simple overall structure, the cost of production and materials can be effectively reduced, and the difficulty of production is not high. It is suitable for ordinary manufacturers to produce, thus effectively reducing the manufacturing cost.

[0049] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. Track-type oral CT device, characterized in that: It includes a circular track, a ball slider, a rotating body, a ball tube assembly, a motor assembly and a detector assembly, the circular track is provided with a rack, the two ends of the top of the rotating body are slidably connected with the circular track through the ball slider, the center of the rotating body and the center of the circular track are located on the same central axis, and the circular track cannot rotate relative to the rotating body; the motor assembly is installed on the rotating body, and the driving end of the motor assembly is provided with a gear for meshing with the rack for transmission, the motor assembly is used to drive the rotating body to rotate along the circular track, the ball tube assembly is arranged at one end of the rotating body, the detector assembly is arranged at the other end of the rotating body, and the ball tube assembly and the detector assembly are arranged opposite to each other. The outer side of the circular track is provided with an outer flange protruding outward, the inner side of the circular track is provided with an inner flange protruding inward, the ball slider is provided with an outer buckle groove for sliding engagement with the outer flange, and the ball slider is provided with an inner buckle groove for sliding engagement with the inner flange. The rail-type oral CT device also includes a support column and a suspension arm, the suspension arm includes a suspension plate, an arc suspension rod assembly, a reinforcement rod and a circular support plate, the suspension plate is connected to the top of the support column, one end of the arc suspension rod assembly is connected to the suspension plate, the other end of the arc suspension rod assembly is connected to the circular support plate, and the circular track is installed at the bottom of the circular support plate. The rail-type oral CT device also includes a chair assembly, which includes a chair column and a chair seat. The chair seat is installed above the chair column in a liftable manner. The chair seat is equipped with a seat cushion and an armrest assembly. The chair assembly also includes a chair motor, a screw, a guide column and a chair slider. The chair column has a vertical hollow cavity. The chair motor is installed in the vertical hollow cavity. The chair seat includes a hollow telescopic rod. The chair slider is arranged in the telescopic rod and connected to the guide rails on both sides of the inner wall of the telescopic rod. One end of the screw is connected to the output end of the chair motor, and the other end of the screw is movably connected to the chair slider. The guide columns are respectively arranged on both sides of the interior of the chair column. The guide columns are slidably matched with the guide rails. The chair motor is used to drive the telescopic rod to perform lifting and lowering movements along the axial direction. The rotating body includes a rotating body shell and a rotating rod, the rotating rod is arranged inside the rotating body shell, and the rotating body shell is respectively provided with a slider through hole for the ball slider to extend out of the rotating body shell and a gear through hole for the gear to extend out of the rotating body shell; the ball tube assembly includes a fixing plate and a ball tube, the ball tube is connected to the rotating rod through the fixing plate, the rotating body shell is also provided with a ball tube opening for the ball tube to extend out of the rotating body shell, and the detector assembly includes a fixing frame and a detector, and the detector is connected to the rotating rod through the fixing frame.

2. The track-type oral CT device according to claim 1, characterized in that: The motor assembly is a servo motor, and the gear is installed on the output end of the servo motor.

3. The track-type oral CT device according to claim 1 or 2, characterized in that: The rotating rod is configured as a hollow square tube.

4. The track-type oral CT device according to claim 1, characterized in that: The support column includes a vertical rod and an arc rod, one end of the arc rod is connected to one end of the vertical rod, the upper end of the boom is arranged at the bottom of the other end of the arc rod, the other end of the vertical rod is provided with a first support rod, and the two ends of the first support rod are respectively vertically connected to the second support rod.

5. The track-type oral CT device according to claim 4, characterized in that: The bottoms of the first support rod and the second support rod are respectively provided with adjustable support feet.

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