A heat-dissipating vehicle-mounted CT scanner

Abstract

This invention relates to the field of medical instruments, specifically disclosing a heat-dissipating vehicle-mounted CT scanner. The CT scanner includes a base, a housing, and a support. The support is connected to the base, and the housing is disposed outside the support. A turntable located inside the housing is rotatably mounted on the support. Multiple hollow baffles are arranged in a ring at intervals on one side of the turntable. The side of the baffle adjacent to the turntable is a convex curved surface, and the side opposite the convex curved surface is a flat surface. The junction between the convex curved surface and the flat surface is an arc transition surface. The cross-section of the baffle is larger at one end and smaller at the other, with the larger end being the front end and the smaller end being the rear end. The front end is the air-facing end. The housing has an air outlet and an air inlet. This invention improves the heat dissipation performance of the vehicle-mounted CT scanner and reduces its energy consumption.

Description

Technical Field

[0001] This invention relates to the field of radiological diagnostic medical instrument technology, specifically to a heat-dissipating vehicle-mounted CT scanner. Background Technology

[0002] Mobile CT scanners refer to CT scanners that can be used in vehicles, such as... Figure 6 and Figure 7 As shown, it mainly includes a base 19, a housing 1, and a bracket 18. The bracket 18 is equipped with a bearing, and a turntable 2 is mounted on the bearing. A wheel assembly is used to drive the turntable 2 to rotate. The turntable 2 is equipped with an X-ray generating module, a detector system, etc.

[0003] During the use of a mobile CT scanner, in addition to generating X-rays, a large amount of heat is also generated when the X-ray tube is exposed. The heat is dissipated through the heat sink of the X-ray tube, causing the temperature of the detector to rise sharply. High temperature affects the stability of the detector data, resulting in a decrease in the final image quality and the generation of artifacts. In addition, other electrical components in the CT scanner also generate heat, such as the high voltage generator.

[0004] To dissipate this heat and maintain a stable internal temperature, existing technologies typically involve adding a cooling fan to the casing. The rotation of the fan blades dissipates the heat from inside the CT scanner and draws in cool air to cool it down. However, this cooling method has some drawbacks: the fans installed on vehicle-mounted CT scanners are generally low-powered and their cooling effect is not ideal. Multiple fans often need to be installed and run simultaneously, which significantly increases the energy consumption of the CT scanner. Summary of the Invention

[0005] The purpose of this invention is to provide a heat-dissipating vehicle-mounted CT scanner to improve the heat dissipation performance of the vehicle-mounted CT scanner and reduce its energy consumption.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0007] A heat-dissipating vehicle-mounted CT scanner includes a CT scanner, a base, a housing, and a support. The support is connected to the base, and the housing is disposed outside the support. A turntable located inside the housing is rotatably mounted on the support. Multiple hollow spoilers are distributed in a ring at intervals on one side of the turntable. The side of the spoiler adjacent to the turntable is a convex curved surface, and the side opposite the convex curved surface is a flat surface. The junction between the convex curved surface and the flat surface is an arc transition surface. The cross-section of the spoiler is large at one end and small at the other end, with the large end being the front end and the small end being the rear end. The front end is the windward end. The housing is provided with an air outlet and an air inlet.

[0008] In this design, the turntable can rotate relative to the support. Multiple baffles are arranged in a ring on one side of the turntable, with the length of the baffles located radially from the turntable. The side of the baffle adjacent to the turntable is a streamlined convex surface, while the opposite side is approximately flat. When the CT scanner is operating, its turntable rotates at a certain speed, which in turn drives the ring-shaped baffles to rotate. The rotation of the multiple baffles causes the hot air inside the housing to rotate. The rotating hot air is discharged to the outside of the housing through the air outlet, reducing the air pressure inside the housing and drawing in external air through the air inlet, thus lowering the temperature of the relevant heat-generating components on the turntable. As the baffles rotate, their convex surfaces... Airflow is faster on curved surfaces, while airflow is slower on the opposite side of convex curved surfaces. The convex curved surface is the side adjacent to the turntable, which has a large number of heat-generating components. The increased airflow speed can quickly remove the heat dissipated by these components, preventing it from accumulating nearby. This solution eliminates the need for multiple cooling fans, reducing the number of energy-consuming components and thus lowering the energy consumption of the CT scanner. The rotation of the turntable enables the rapid expulsion of hot air, improving the heat dissipation performance of the vehicle-mounted CT scanner. At the same time, when the spoiler rotates with the turntable, the rounded transition surface at the front end of the spoiler reduces air resistance and further reduces the energy consumption of the turntable.

[0009] Optionally, multiple air outlets are provided along the circumference of the outer wall of the housing. The air outlets are connected to air outlet pipes located on the tangent of the housing. The multiple air outlet pipes are connected to a main air outlet pipe located on the outside of the housing. An exhaust fan is provided at the outlet of the main air outlet pipe.

[0010] Optionally, the air outlet is elliptical, with one end of the air outlet pipe being larger than the other, and the smaller end being connected to the air outlet.

[0011] Optionally, the air inlets are located on the side of the housing and are distributed in a ring shape.

[0012] Optionally, a mounting base for mounting a spoiler is provided on one side of the turntable. The mounting base is annular, and a connecting rod is provided at one end of the spoiler. The connecting rod is movably connected to the mounting base. One end of the connecting rod is connected to a driven gear located inside the mounting base. The driven gear is a sector gear. A transmission gear that can mesh with the driven gear is movably provided on the inner wall of the housing. The transmission gear meshes with a driving gear. The driving gear is connected to a drive motor, which is installed inside the housing.

[0013] Optionally, the housing includes a rear housing and a front housing. The rear housing is located on the left side of the support, and the front housing is located on the right side of the support. The rear housing is connected to the support. A flange is provided on the end face of the rear housing opposite to the front housing. A support cylinder is provided on the inner wall of the front housing. A bearing is provided on the support cylinder. A transmission gear is connected to the bearing. The two flanges are connected by an adjusting bolt. Turning the adjusting bolt changes the relative position of the front housing and the rear housing and allows the transmission gear to mesh with or disengage from the driven gear.

[0014] Optionally, a flexible corrugated plate is provided between the two flanges, with each end of the corrugated plate connected to the corresponding flange.

[0015] Optionally, the transmission gear includes two tooth sections: a conical section that meshes with the driven gear and a horizontal section that meshes with the driving gear.

[0016] Optionally, the turntable is provided with multiple eccentricity detection components, which are distributed in a ring around the circumference of the turntable. The eccentricity components are located on the opposite side of the spoiler. Each eccentricity detection component includes a mounting cylinder, a roller, a guide rod, and a piston installed radially along the turntable. The mounting cylinder is closed at both ends, and its lower end is connected to the turntable. The piston is slidably disposed inside the mounting cylinder. One end of the guide rod passes through the mounting cylinder and is connected to the piston, while the other end is connected to the roller. The guide rod and the mounting cylinder can slide relative to each other. The roller abuts against the inner wall of the housing. A spring is provided between the piston and the bottom wall of the mounting cylinder, and a pressure sensor is provided between the spring and the piston.

[0017] Optionally, the roller is made of rubber.

[0018] The beneficial effects of this invention are as follows:

[0019] In this invention, multiple baffles are arranged in a ring on one side of the turntable. The length direction of the baffles is located radially to the turntable. The side of the baffle adjacent to the turntable is a streamlined convex surface, and the side opposite to the convex surface is an approximate plane. When the CT machine is working, the turntable rotates, causing the baffles to rotate. The rotation of the multiple baffles causes the hot air inside the housing to rotate. The rotating hot air is discharged to the outside of the housing through the air outlet, reducing the air pressure inside the housing and drawing in external air through the air inlet, thus reducing the temperature of the relevant heat-generating components on the turntable. When the baffles rotate, the airflow velocity through their convex surfaces is high, while the airflow velocity through the convex surfaces is high. The airflow velocity is slower on the face-to-face surfaces, while the convex curved surface is the side adjacent to the turntable. The turntable is equipped with a large number of heat-generating components. The increased airflow velocity can quickly remove the heat emitted by the heat-generating components, preventing it from accumulating nearby. This solution eliminates the need for multiple cooling fans, reducing the number of energy-consuming components and thus lowering the energy consumption of the CT scanner. The rotation of the turntable enables the rapid exhaust of hot air, improving the heat dissipation performance of the vehicle-mounted CT scanner. At the same time, when the spoiler rotates with the turntable, the front end of the spoiler has a rounded transition surface, which reduces air resistance and further reduces the energy consumption of the turntable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the distribution structure of the air outlets;

[0022] Figure 3 This is a schematic diagram of the distribution structure of the eccentricity detection component;

[0023] Figure 4 This is a schematic diagram of the air intake distribution structure;

[0024] Figure 5 This is a schematic diagram of the cross-section of the spoiler;

[0025] Figure 6 A stereoscopic image of an existing CT scanner;

[0026] Figure 7 This is a structural diagram of the interior of an existing CT scanner.

[0027] Reference numerals: 1-Housing, 101-Front housing, 102-Rear housing, 2-Turntable, 3-Spoiler, 301-Convex curved surface, 302-Flat surface, 303-Circular transition surface, 4-Driving gear, 5-Drive motor, 6-Driven gear, 7-Support cylinder, 8-Transmission gear, 801-Horizontal section, 802-Conical section, 9-Mounting base, 10-Corrugated plate, 11-Adjusting bolt, 12-Mounting cylinder, 13-Roller, 14-Guide rod, 15-Piston, 16-Spring, 17-Connecting rod, 18-Bracket, 19-Base, 20-Exhaust duct, 21-Exhaust port, 22-Main exhaust duct, 23-Exhaust fan, 24-Inlet, 25-Bearing. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "longitudinal," "lateral," "horizontal," "inner," "outer," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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 invention.

[0030] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] A heat-dissipating vehicle-mounted CT scanner includes a CT scanner, a base 19, a housing 1, and a bracket 18. The bracket 18 is connected to the base 19, and the housing 1 is disposed outside the bracket 18. A turntable 2 located inside the housing 1 is rotatably mounted on the bracket 18. Multiple hollow baffles 3 are distributed in a ring on one side of the turntable 2. The side of the baffle 3 adjacent to the turntable 2 is a convex curved surface 301, and the side opposite to the convex curved surface 301 is a flat surface 302. The connection between the convex curved surface 301 and the flat surface 302 is an arc transition surface 303. The cross-section of the baffle 3 is large at one end and small at the other end, with the large end being the front end and the small end being the tail end. The front end is the windward end. The housing 1 is provided with an air outlet 21 and an air inlet 24.

[0032] In this embodiment, the CT scanner is mainly used in a vehicle. The base 19 is used to connect to the interior of the vehicle, and is generally installed in the trunk of the vehicle. The bracket 18 is connected to the base 19. A large bearing is installed on the bracket 18, and a turntable 2 is installed on the bearing. The turntable 2 is equipped with an X-ray generating module, a detector system, etc. The turntable 2 is driven to rotate by a pulley assembly. The housing 1 is installed on the outside of the bracket 18 to protect the internal components. Both the turntable 2 and the housing 1 are annular with a hollow center. The bracket 18 is set on both sides of the hollow area. The hollow area is used to allow the patient's head and other detection areas to pass through. The structure and working principle of the CT scanner are existing technologies and will not be described in detail again.

[0033] like Figure 1 and Figure 2 As shown, since the turntable 2 can rotate relative to the support 18, multiple baffles 3 are distributed in a ring on one side of the turntable 2. The length direction of the baffles 3 is located in the radial direction of the turntable 2, and the end of the baffle 3 away from the turntable 2 does not contact the inner wall of the housing 1. Figure 5 As shown, the side of the spoiler 3 adjacent to the turntable 2 is a streamlined convex surface 301, and the side opposite to the convex surface 301 is an approximate plane 302. When the CT machine is working, its turntable 2 rotates at a certain speed, which in turn drives the ring-shaped spoilers 3 to rotate. The rotation of multiple spoilers 3 causes the hot air inside the housing 1 to rotate. The rotating hot air is discharged to the outside of the housing 1 through the air outlet 21, and the air pressure inside the housing 1 decreases, such as... Figure 4As shown, external air is drawn in through the air inlet 24, reducing the temperature of the relevant heat-generating components on the turntable 2. When the spoiler 3 rotates, the airflow velocity through its convex curved surface 301 is fast, while the airflow velocity through the opposite side of the convex curved surface 301 is slower. The convex curved surface 301 is adjacent to the side of the turntable 2, which is equipped with a large number of heat-generating components. The increased airflow velocity can quickly remove the heat emitted by the heat-generating components, preventing it from accumulating nearby. This solution eliminates the need for multiple fans for cooling, reducing the number of energy-consuming components and thus reducing the energy consumption of the CT scanner. The rotation of the turntable 2 enables the rapid exhaust of hot air, improving the heat dissipation performance of the vehicle-mounted CT scanner. At the same time, when the spoiler 3 rotates with the turntable 2, the front end of the spoiler 3 is a rounded transition surface 303, which reduces air resistance and reduces the energy consumption of the turntable 2. Meanwhile, the pressure difference on both sides of the spoiler 3 can generate thrust, assisting the rotation of the turntable 2 and further reducing the energy consumption of the pulley assembly that drives the turntable 2.

[0034] Furthermore, multiple air outlets 21 are provided along the circumference of the outer wall of the housing 1. The air outlets 21 are connected to air outlet pipes 20 located on the tangent of the housing 1. Multiple air outlet pipes 20 are connected to air outlet main pipes 22 located on the outside of the housing 1. An exhaust fan 23 is provided at the outlet of the air outlet main pipe 22.

[0035] Specifically, such as Figure 2 As shown, the air outlets 21 are evenly distributed circumferentially along the outer wall of the shell 1 (e.g., one every 60°, for a total of 6), forming a 360° all-around exhaust channel. This design avoids local airflow stagnation and ensures that hot air inside the shell 1 is discharged evenly. The cross-sectional area of ​​a single air outlet 21 is calculated based on the total exhaust volume requirement and the convection heat transfer formula (existing formula). The air outlet duct 20 is connected tangentially to the shell 1, causing the exhaust airflow to accelerate along the tangential direction of the shell 1. When the airflow is ejected tangentially, it adheres to the wall of the air outlet duct 20 to form a wall-attached jet, accelerating the air discharge.

[0036] Multiple tangential air outlet ducts 20 converge into a main air outlet 22, which can extend to the outside of the vehicle. A centrifugal exhaust fan 23 (such as a rearward centrifugal fan) is installed at the outlet of the duct to accelerate the exhaust of hot air. The tangential air outlet ducts 20 inject airflow into the main pipe at an angle of 15° to 30°, forming a spiral airflow. The friction coefficient of the spiral flow is lower, thereby reducing the frictional resistance within the main air outlet duct 22.

[0037] Furthermore, microgrooves (groove depth 20~50μm, spacing 100~200μm) can be machined on the inner wall of the exhaust duct 20 to mimic the drag-reducing characteristics of shark skin and reduce airflow friction resistance by 10%~15%. A serrated structure (serration height 1~2mm, spacing 5~10mm) is designed on the edge of the exhaust fan blades 23 to reduce vortex noise generated by airflow separation by 3~5dB.

[0038] Furthermore, the air outlet 21 is elliptical, and the air outlet pipe 20 is larger at one end and smaller at the other, with the smaller end connected to the air outlet 21.

[0039] Specifically, the air outlet duct 20 is large at one end and small at the other. The connection with the air outlet 21 is at the small end. When the airflow enters the small hole, the flow velocity increases, creating a local negative pressure environment at the air outlet 21. This can cause the surrounding hot air to be drawn in, thus accelerating the airflow from the housing 1 to the air outlet duct 20.

[0040] Furthermore, the air inlets 24 are located on the side of the housing 1 and are distributed in a ring shape.

[0041] Furthermore, a mounting base 9 for mounting a spoiler 3 is provided on one side of the turntable 2. The mounting base 9 is annular. A connecting rod 17 is provided at one end of the spoiler 3. The connecting rod 17 is movably connected to the mounting base 9. A driven gear 6 located inside the mounting base 9 is connected to one end of the connecting rod 17. The driven gear 6 is a sector gear. A transmission gear 8 that can mesh with the driven gear 6 is movably provided on the inner wall of the housing 1. The transmission gear 8 meshes with a driving gear 4. The driving gear 4 is connected to a drive motor 5. The drive motor 5 is installed inside the housing 1.

[0042] Furthermore, the housing 1 includes a rear housing 102 and a front housing 101. The rear housing 102 is located on the left side of the support 18, and the front housing 101 is located on the right side of the support 18. The rear housing 102 is connected to the support 18. Flanges are provided on the end faces of the rear housing 102 and the front housing 101 opposite each other. A support cylinder 7 is provided on the inner wall of the front housing 101. A bearing 25 is provided on the support cylinder 7. A transmission gear 8 is connected to the bearing 25. The two flanges are connected by an adjusting bolt 11. Tightening the adjusting bolt 11 changes the relative position of the front housing 101 and the rear housing 102 and allows the transmission gear 8 to mesh with or disengage from the driven gear 6.

[0043] Furthermore, a flexible corrugated plate 10 is provided between the two flanges, with both ends of the corrugated plate 10 connected to the corresponding flanges.

[0044] Furthermore, the transmission gear 8 includes two tooth segments: a conical segment 802 that meshes with the driven gear 6, and a horizontal segment 801 that meshes with the driving gear 4.

[0045] Specifically, the housing 1 is divided into a front housing 101 and a rear housing 102. The rear housing 102 is located at the left end of the bracket 18, and the front housing 101 is located at the right end of the bracket 18. The rear housing 102 is bolted to the bracket 18, and the front housing 101 is connected to the rear housing 102 via a flange. An elastic corrugated plate 10 is bonded between the two flanges. By turning the adjusting bolt 11, the relative positions of the front housing 101 and the rear housing 102 can be changed. When the front housing 101 moves closer to the rear housing 102, the transmission gear 8 moves closer to the driven gear 6 until the teeth of the conical section 802 on the transmission gear 8 mesh with the driven gear 6. The connecting rod 17 is threadedly connected to the mounting base 9. Essentially a threaded rod, the threaded connection allows for both rotation and self-locking. The drive motor 5 is directly mounted on the inner wall of the front housing 101. A brushless motor can be used to reduce noise. The drive motor 5 drives the active gear 4 to rotate. The active gear 4 meshes with the teeth on the horizontal section 801 of the transmission gear 8, thereby driving the transmission gear 8 to rotate. The transmission gear 8 drives the driven gear 6 to rotate. The relative rotation between the connecting rod 17 and the mounting base 9 changes the angle of the guide vane 3, thereby adjusting the degree of disturbance to the hot air and adjusting the exhaust heat dissipation efficiency. In this embodiment, the drive motor 5 is started only after the transmission gear 8 meshes with the driven gear 6. The drive motor 5 moves together with the front housing 101.

[0046] In this embodiment, the middle part of the transmission gear 8 is also hollowed out. When the CT machine is running, the transmission gear 8 is disengaged from the driven gear 6. When it is necessary to adjust the angle of the spoiler 3, the front shell 101 is moved closer to the rear shell 102 by turning the adjusting bolt 11, so that the transmission gear 8 meshes with each driven gear 6. Due to the self-locking of the thread, when the turntable 2 rotates, there will be no relative rotation between the spoiler 3 and the mounting base 9, so that the angle of the spoiler 3 can remain unchanged. Since the spoiler 3 rotates with the turntable 2 when the CT machine is running, it is not convenient for the gears to mesh. Therefore, the angle adjustment of the spoiler 3 must be carried out when the CT machine is not working.

[0047] Furthermore, the turntable 2 is provided with multiple eccentricity detection components, which are arranged in a ring around the circumference of the turntable 2. The eccentricity components are located on the opposite side of the spoiler 3. Each eccentricity detection component includes a mounting cylinder 12, a roller 13, a guide rod 14, and a piston 15, which are installed radially along the turntable 2. The mounting cylinder 12 is closed at both ends, and its lower end is connected to the turntable 2. The piston 15 is slidably disposed inside the mounting cylinder 12. One end of the guide rod 14 passes through the mounting cylinder 12 and is connected to the piston 15, while the other end is connected to the roller 13. The guide rod 14 and the mounting cylinder 12 can slide relative to each other. The roller 13 abuts against the inner wall of the housing 1. A spring 16 is provided between the piston 15 and the bottom wall of the mounting cylinder 12, and a pressure sensor is provided between the spring 16 and the piston 15.

[0048] Furthermore, the roller 13 is made of rubber.

[0049] Specifically, such as Figure 3 As shown, multiple eccentricity detection components are installed on the other side of the turntable 2, mainly used to detect whether there is an imbalance during the rotation of the turntable 2. The mounting cylinder 12 is radially connected to the turntable 2, and its upper and lower ends are closed, as shown. Figure 1 As shown, piston 15 is fitted inside mounting cylinder 12. One end of guide rod 14 passes through mounting cylinder 12 and is fixedly connected to the middle of piston 15. The other end is connected to a rubber roller 13. A spring 16 is provided between piston 15 and the wall of mounting cylinder 12. After piston 15 compresses spring 16, it abuts roller 13 against the inner wall of rear shell 102. When turntable 2 rotates, it also drives eccentric component to rotate. Eccentric component achieves relative rotation with rear shell 102 through roller 13. When turntable 2 rotates, theoretically, the compression degree of each spring 16 is the same, so the pressure reading detected by pressure sensor (not shown in the figure) is also the same. If there is an eccentricity in a certain area of ​​the turntable 2, the reading of the pressure sensor in that area will decrease significantly. This is because the centrifugal force generated by the rotation of the turntable 2 will reduce the pressure of the piston 15 on the spring 16, thus lowering the reading of the pressure sensor. If the decrease exceeds the designed threshold range, it can be determined that there is an eccentricity in the area where the pressure sensor is located, and the center of gravity needs to be adjusted. Generally, an appropriate amount of weight is added to the opposite position of the eccentric area.

[0050] When the CT scanner is installed in a vehicle and not in operation, the vibrations generated during vehicle operation are transmitted to the base 19 and housing 1. The vibration force can be absorbed by the reciprocating movement of the rubber rollers 13 and piston 15 compressing the spring 16, thereby achieving the shock absorption effect on the turntable 2. This ensures that the components on the turntable 2 will not be damaged by vibration and guarantees the normal operation of the CT scanner.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Based on the technical essence of the present invention, any simple modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principles of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A heat-dissipating vehicle-mounted CT scanner, comprising a CT scanner, the CT scanner including a base (19), a housing (1), and a bracket (18), the bracket (18) being connected to the base (19), the housing (1) being disposed outside the bracket (18), and a turntable (2) rotatably disposed on the bracket (18) within the housing (1), characterized in that, The turntable (2) has multiple hollow spoilers (3) arranged in a ring on one side. The side of the spoiler (3) adjacent to the turntable (2) is a convex curved surface (301), and the side opposite to the convex curved surface (301) is a flat surface (302). The connection between the convex curved surface (301) and the flat surface (302) is an arc transition surface (303). The cross-section of the spoiler (3) is large at one end and small at the other end. The large end is the front end and the small end is the tail end. The front end is the windward end. The shell (1) is provided with an air outlet (21) and an air inlet (24). The turntable (2) has a mounting base (9) for mounting a spoiler (3) on one side. The mounting base (9) is ring-shaped. One end of the spoiler (3) is provided with a connecting rod (17). The connecting rod (17) is movably connected to the mounting base (9). One end of the connecting rod (17) is connected to a driven gear (6) located inside the mounting base (9). The driven gear (6) is a sector gear. The inner wall of the housing (1) is movably provided with a transmission gear (8) that can mesh with the driven gear (6). The transmission gear (8) meshes with a driving gear (4). The driving gear (4) is connected to a drive motor (5). The drive motor (5) is installed inside the housing (1). The housing (1) includes a rear housing (102) and a front housing (101). The rear housing (102) is located on the left side of the support (18), and the front housing (101) is located on the right side of the support (18). The rear housing (102) is connected to the support (18). Flanges are provided on the opposite end faces of the rear housing (102) and the front housing (101). A support cylinder (7) is provided on the inner wall of the front housing (101). A bearing (25) is provided on the support cylinder (7). A transmission gear (8) is connected to the bearing (25). The two flanges are connected by an adjusting bolt (11). Tightening the adjusting bolt (11) changes the relative position of the front housing (101) and the rear housing (102) and allows the transmission gear (8) to mesh or disengage from the driven gear (6). An elastic corrugated plate (10) is provided between the two flanges. The two ends of the corrugated plate (10) are respectively connected to the opposite flanges. The turntable (2) is provided with multiple eccentricity detection components. The multiple eccentricity detection components are distributed in a ring around the turntable (2). The eccentricity components are located on the opposite side of the spoiler (3). The eccentricity detection components include a mounting cylinder (12), a roller (13), a guide rod (14), and a piston (15) installed radially along the turntable (2). The mounting cylinder (12) is closed at both ends. The lower end of the mounting cylinder (12) is connected to the turntable (2). The piston (15) is slidably disposed in the mounting cylinder (12). One end of the guide rod (14) passes through the mounting cylinder (12) and is connected to the piston (15). The other end is connected to the roller (13). The guide rod (14) and the mounting cylinder (12) can slide relative to each other. The roller (13) abuts against the inner wall of the housing (1). A spring (16) is provided between the piston (15) and the bottom wall of the mounting cylinder (12). A pressure sensor is provided between the spring (16) and the piston (15).

2. The heat-dissipating vehicle-mounted CT scanner according to claim 1, characterized in that, The air outlet (21) is provided in multiple circumferential directions along the outer wall of the shell (1). The air outlet (21) is connected to the air outlet pipe (20) located on the tangent of the shell (1). The multiple air outlet pipes (20) are connected to the air outlet main pipe (22) located on the outside of the shell (1). An exhaust fan (23) is provided at the outlet of the air outlet main pipe (22).

3. A heat-dissipating vehicle-mounted CT scanner according to claim 2, characterized in that, The air outlet (21) is elliptical, and the air outlet pipe (20) is large at one end and small at the other end, with the small end connected to the air outlet (21).

4. A heat-dissipating vehicle-mounted CT scanner according to claim 1, characterized in that, The air inlets (24) are located on the side of the housing (1) and are distributed in a ring.

5. A heat-dissipating vehicle-mounted CT scanner according to claim 1, characterized in that, The transmission gear (8) includes two teeth: a conical section (802) that meshes with the driven gear (6) and a horizontal section (801) that meshes with the driving gear (4).

6. A heat-dissipating vehicle-mounted CT scanner according to claim 1, characterized in that, The roller (13) is made of rubber.

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