A vibration-isolated vehicle-mounted CT system

Abstract

The present invention belongs to the field of CT technology, and specifically discloses a seismic isolation vehicle-mounted CT system, including a CT machine body installed on a vehicle, the CT machine body including a CT host, a rotating seat, and a mounting seat, the mounting seat is connected to the vehicle, the CT host is installed on the top surface of the rotating seat, the bottom surface of the rotating seat and the top surface of the mounting seat are in spherical contact, and seismic isolation mechanisms for buffering the impact of road bumps on the CT host are symmetrically arranged on both sides of the rotating seat. The present invention can directly isolate the CT host from shock, has a better shock absorption effect, is more conducive to protecting the CT host, and can also avoid the risk of the CT host being thrown out by centrifugal force when making a sharp turn.

Description

Technical Field

[0001] The present invention relates to the technical field of CT systems, and in particular to a seismic isolation vehicle-mounted CT system. Background Art

[0002] In the vehicle-mounted CT system, the CT host is prone to bumps during transportation due to uneven road conditions. The bumps of the vehicle transmit the impact force to the CT host, which can easily cause damage to the internal components of the CT host, so shock-absorbing and buffering measures are required for the CT host. The existing vehicle-mounted CT shock-absorbing measures use a shock-absorbing air cushion installed on the chassis of the physical examination vehicle to indirectly reduce the shock of the CT, but the shock-absorbing effect is not good. Specifically, there are the following problems: the shock-absorbing air cushion is installed on the chassis of the car, and there is no direct shock absorption for the CT host, so the shock-absorbing effect is not good. In addition, the speed of the ambulance is relatively high during operation. When making sharp turns, the centrifugal force generated is relatively large, which can easily cause the CT host to be thrown out and damaged. Summary of the invention

[0003] The object of the present invention is to provide a seismic isolation vehicle-mounted CT system, which can directly isolate the CT host from shock, has a better shock absorption effect, is more conducive to protecting the CT host, and can also avoid the risk of the CT host being thrown out by centrifugal force during sharp turns.

[0004] In order to solve the above technical problems, the present invention adopts the following solutions:

[0005] A seismic isolation vehicle-mounted CT system comprises a CT machine body installed on a vehicle, the CT machine body comprises a CT host, a rotating seat, and a mounting seat, the mounting seat is connected to the vehicle, the CT host is mounted on the top surface of the rotating seat, the bottom surface of the rotating seat and the top surface of the mounting seat are in spherical contact, and seismic isolation mechanisms for buffering the impact of road bumps on the CT host are symmetrically arranged on both sides of the rotating seat.

[0006] In this solution, the CT host is the core component of the system, responsible for performing CT scanning tasks and generating high-quality medical images. The mounting seat serves as a connecting bridge between the entire CT machine body and the vehicle. The bottom surface of the rotating seat and the top surface of the mounting seat use spherical contact, which is an effective seismic isolation measure. Spherical contact allows the rotating seat to swing freely within a certain range when subjected to the impact of road bumps, thereby absorbing and dispersing the vibration and impact from the road surface and protecting the precision components inside the CT host from damage. The seismic isolation mechanism is symmetrically arranged on both sides of the rotating seat to ensure that during the driving process of the vehicle, no matter what direction of vibration or impact is encountered, a balanced buffering effect can be obtained to maintain the stability of the CT host. The main function of the seismic isolation mechanism is to absorb and attenuate the vibration energy from the road surface and reduce the impact of these vibrations on the precision components inside the CT host. At the same time, since the rotating seat and the mounting seat are rotatably connected, the rotating seat can drive the CT host to swing together when it swings. Therefore, when the ambulance makes a sharp turn, the rotating seat can drive the CT host to be tilted in the direction of the turn, so that the CT host can generate centripetal force on the top surface of the rotating seat to offset the centrifugal force caused by the sharp turn of the ambulance, thereby avoiding the risk of the CT host being thrown out by the centrifugal force when making a sharp turn.

[0007] Optionally, the seismic isolation mechanism is a gravity-type seismic isolation mechanism, which includes a flexible connector, a gravity block, and an elastomer. The gravity blocks on both sides have the same weight. The upper end of the flexible connector is lock-connected to the side wall of the rotating seat, and the lower end of the flexible connector is connected to the gravity block. The gravity block is slidably arranged inside the mounting seat, and the elastomer is arranged between the top of the gravity block and the inner wall of the mounting seat. The gravity blocks on both sides of the rotating seat move up and down alternately and squeeze the elastomer to buffer the impact of road bumps on the CT host.

[0008] Optionally, a fixed seat is provided on the side of the rotating seat, a slot is provided inside the fixed seat, a channel is provided on the bottom of the slot for the flexible connector to pass through, the channel is vertically arranged and connected to the slot, an adaptive anchor head is provided in the slot, the bottom surface of the anchor head is fixedly connected to the flexible connector, and the lower end of the flexible connector passes through the channel and is connected to the gravity block.

[0009] Optionally, a conical slide groove is provided inside the mounting seat, the upper end of the slide groove is small and the lower end is large, and the upper end of the slide groove passes through the top surface of the mounting seat, the shape of the gravity block is a cone that matches the slide groove, and the elastomer is fixed in the slide groove.

[0010] Optionally, the elastic body is an air bag or a spring that is adapted to the shape of the slide groove.

[0011] Optionally, the flexible connecting member is a steel wire rope, which is formed by spirally winding a plurality of steel wires, and a rubber body is sandwiched between the steel wires.

[0012] Optionally, the bottom surface of the rotating seat is a convex spherical surface, and the top surface of the mounting seat is provided with a concave spherical surface matching the convex spherical surface.

[0013] Optionally, the seismic isolation mechanism is a fluid-type seismic isolation mechanism, which includes a pull rod and a piston. Fixed seats are provided on both sides of the rotating seat. The upper end of the pull rod is hinged to the fixed seat, and the lower end of the pull rod is connected to the piston. A downward first flow channel is provided on the top surface of the mounting seat, and the piston is adapted to slide in the first flow channel. A baffle is provided on the top of the first flow channel, and the pull rod passes through the baffle. A sealing ring is embedded in the circumference of the piston. A second flow channel connected to the first flow channel is provided inside the mounting seat, and the first flow channel and the second flow channel form a U-shape. Fluid is injected into the first flow channel and the second flow channel. The pull rods on both sides of the rotating seat move up and down alternately and squeeze the fluid to buffer the impact of road bumps on the CT host.

[0014] Optionally, the fluid is hydraulic oil or water.

[0015] Optionally, a mounting cavity is provided on the bottom surface of the piston, a pressure sensor is provided in the mounting cavity, a pressure-sensitive diaphragm for sealing the pressure sensor with the mounting cavity is provided at the opening of the mounting cavity, and the sensing end of the pressure sensor is in close contact with the pressure-sensitive diaphragm.

[0016] The present invention has the beneficial effects:

[0017] 1. In the present invention, the bottom surface of the rotating seat and the top surface of the mounting seat adopt spherical contact. The spherical contact allows the rotating seat to swing freely within a certain range when subjected to the impact force of road bumps, thereby absorbing and dispersing the vibration and impact from the road surface, and protecting the precision components inside the CT host from damage. The seismic isolation mechanism is symmetrically arranged on both sides of the rotating seat to ensure that during the driving process of the vehicle, no matter what direction of vibration or impact is encountered, a balanced buffering effect can be obtained to maintain the stability of the CT host. The main function of the seismic isolation mechanism is to absorb and attenuate the vibration energy from the road surface, and reduce the impact of these vibrations on the precision components inside the CT host.

[0018] 2. Since the rotating seat and the mounting seat are rotatably connected, the rotating seat can drive the CT host to swing together when it swings. When the ambulance makes a sharp turn, the rotating seat can drive the CT host to be tilted in the turning direction, so that the CT host can generate centripetal force on the top surface of the rotating seat to offset the centrifugal force caused by the sharp turn of the ambulance, thereby avoiding the risk of the CT host being thrown out by the centrifugal force when the ambulance makes a sharp turn. After the ambulance turns, the centrifugal force disappears and the rotating seat automatically swings back to its original position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a gravity-type seismic isolation mechanism;

[0021] Figure 3 It is a structural schematic diagram of a fluid type seismic isolation mechanism;

[0022] Figure 4 Schematic diagram of the ambulance's structure when it makes a sharp right turn

[0023] Figure 5 for Figure 3 Enlarged structural diagram of point A in the middle.

[0024] Figure markings: 1-CT mainframe, 2-rotating seat, 3-fixed seat, 4-slot, 5-flexible connector, 6-slide groove, 7-stainless steel plate, 8-concave spherical surface, 9-wear-resistant plate, 10-convex spherical surface, 11-mounting seat, 12-elastic body, 13-anchor head, 14-seismic isolation mechanism, 15-first flow channel, 16-second flow channel, 17-pull rod, 18-baffle, 19-piston, 20-sealing ring, 21-mounting cavity, 22-pressure sensor, 23-pressure-sensitive diaphragm, 24-gravity block. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0026] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "opened", "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 the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example 1

[0029] A seismic isolation vehicle-mounted CT system includes a CT machine body installed on a vehicle, wherein the CT machine body includes a CT mainframe 1, a rotating seat 2, and a mounting seat 11, wherein the mounting seat 11 is connected to the vehicle, the CT mainframe 1 is mounted on the top surface of the rotating seat 2, the bottom surface of the rotating seat 2 is in spherical contact with the top surface of the mounting seat 11, and seismic isolation mechanisms 14 for buffering the impact of road bumps on the CT mainframe 1 are symmetrically arranged on both sides of the rotating seat 2.

[0030] In this embodiment, Figure 1 As shown, the CT host 1 is the core component of the system, responsible for performing CT scanning tasks and generating high-quality medical images. The mounting seat 11 serves as a connecting bridge between the entire CT machine body and the vehicle. The bottom surface of the rotating seat 2 and the top surface of the mounting seat 11 adopt spherical contact, which is an effective seismic isolation measure. The spherical contact allows the rotating seat 2 to swing freely within a certain range when subjected to the impact of road bumps, thereby absorbing and dispersing the vibration and impact from the road surface and protecting the precision components inside the CT host 1 from damage. The seismic isolation mechanism 14 is symmetrically arranged on both sides of the rotating seat 2 to ensure that during the driving process of the vehicle, no matter what direction of vibration or impact is encountered, a balanced buffering effect can be obtained to maintain the stability of the CT host 1. The main function of the seismic isolation mechanism 14 is to absorb and attenuate the vibration energy from the road surface and reduce the impact of these vibrations on the precision components inside the CT host 1. At the same time, since the rotating seat 2 and the mounting seat 11 are rotatably connected, the rotating seat 2 can drive the CT host 1 to swing together when it swings. Therefore, when the ambulance makes a sharp turn, the rotating seat 2 can drive the CT host 1 to be in a state of tilting in the turning direction, so that the CT host 1 can generate centripetal force on the top surface of the rotating seat 2 to offset the centrifugal force caused by the sharp turn of the ambulance, thereby avoiding the risk of the CT host 1 being thrown out by the centrifugal force when making a sharp turn.

[0031] Example 2

[0032] Furthermore, the seismic isolation mechanism 14 is a gravity-type seismic isolation mechanism 14, which includes a flexible connector 5, a gravity block 24, and an elastomer 12. The gravity blocks 24 on both sides have the same weight. The upper end of the flexible connector 5 is lock-connected to the side wall of the rotating seat 2, and the lower end of the flexible connector 5 is connected to the gravity block 24. The gravity block 24 is slidably arranged inside the mounting seat 11, and the elastomer 12 is arranged between the top of the gravity block 24 and the inner wall of the mounting seat 11. The gravity blocks 24 on both sides of the rotating seat 2 move up and down alternately and squeeze the elastomer 12 to buffer the impact of road bumps on the CT host 1.

[0033] On the basis of the above-mentioned embodiment 1, Figure 2As shown, the flexible connector 5 serves as a bridge connecting the rotating seat 2 and the gravity block 24. It needs to have a certain degree of flexibility to allow the gravity block 24 to move relatively when subjected to external force. The upper end of the flexible connector 5 forms a lock connection with the side wall of the rotating seat 2 to ensure that the connection is stable and not easy to fall off; the lower end is connected to the gravity block 24 to allow the gravity block 24 to move freely in the vertical direction. The gravity blocks 24 on both sides of the rotating seat 2 have the same weight. This is to ensure that when the CT host 1 is in use, the rotating seat 2 can be in a horizontal state to ensure the scanning quality of the CT host 1. The gravity block 24 is a solid iron block or a stainless steel block. The gravity block 24 slides inside the mounting seat 11. This design allows the gravity block 24 to move up and down alternately along the inner wall of the mounting seat 11 when it is vibrated by road bumps. The change in the center of gravity of the rotating seat 2 enables the flexible connector 5 to drive the gravity blocks 24 on both sides to move up and down alternately along the inner wall of the mounting seat 11, thereby absorbing and dispersing vibration energy. Alternating up and down movement means that when the gravity block 24 on one side slides upward, the gravity block 24 on the other side slides downward. The elastomer 12 is arranged between the top of the gravity block 24 and the inner wall of the mounting seat 11. Its main function is to serve as a buffer element, providing necessary elasticity and damping when the gravity block 24 moves up and down, so as to further absorb and attenuate vibration energy. The material of the elastomer 12 should have good elasticity, durability and corrosion resistance. Common materials include rubber, spring steel, springs, etc.

[0034] The working principle of the gravity-type seismic isolation mechanism 14: When a vehicle travels on an uneven road, the vibration generated by the road bumps will be transmitted to the rotating seat 2, and then affect the CT host 1. In this case, the gravity-type seismic isolation mechanism 14 begins to play a role. Due to the randomness and directionality of the road bumps, the gravity blocks 24 on both sides of the rotating seat 2 will be alternately subjected to upward impact force and downward gravity. When the gravity block 24 on one side is subjected to an upward impact force, it will move upward and squeeze the elastomer 12 on the top, and the elastomer 12 will deform and absorb part of the vibration energy; at the same time, the gravity block 24 on the other side will move downward due to the action of gravity and stretch the elastomer 12 on the other side, also absorbing vibration energy. Through this alternating up and down movement and squeezing of the elastomer 12, the gravity-type seismic isolation mechanism 14 can effectively buffer the impact of road bumps on the CT host 1 and protect its internal precision components from damage.

[0035] At the same time, the flexible connector 5 and the gravity block 24 can work together to resist the pulling of the rotating seat 2 , thereby preventing the rotating seat 2 from being separated from the mounting seat 11 due to a large bump and impact, and further protecting the CT host 1 .

[0036] Furthermore, a fixed seat 3 is provided on the side of the rotating seat 2, a slot 4 is provided inside the fixed seat 3, a channel for the flexible connector 5 to pass through is provided on the bottom surface of the slot 4, the channel is vertically arranged and connected to the slot 4, an adaptive anchor head 13 is provided in the slot 4, the bottom surface of the anchor head 13 is fixedly connected to the flexible connector 5, and the lower end of the flexible connector 5 passes through the channel and is connected to the gravity block 24.

[0037] Specifically, the fixed seat 3 is arranged on the side of the rotating seat 2 to ensure that the flexible connector 5 and the weight block 24 connected thereto can be stably supported and fixed during the driving of the vehicle. The fixed seat 3, as an intermediate structure connecting the rotating seat 2 and the flexible connector 5, plays a role in transmitting and dispersing force. The interior of the card slot 4 is designed with a specific shape and size for accommodating and fixing the anchor head 13. The bottom surface of the card slot 4 is provided with a channel, which is vertically arranged and connected to the card slot 4, allowing the flexible connector 5 to pass through and be connected to the weight block 24. The main function of the card slot 4 is A stable platform is provided so that the anchor head 13 can be firmly fixed in the slot 4, thereby ensuring that the connection between the flexible connector 5 and the rotating seat 2 will not loosen or fall off. The cooperation between the slot 4 and the anchor head 13 forms a form-locking structure to prevent the flexible connector 5 from being separated from the fixed seat 3. The channel is vertically arranged on the bottom surface of the slot 4 and connected to the slot 4. Its direction should be consistent with the movement direction of the flexible connector 5. During the driving of the vehicle, the anchor head 13 can withstand the impact force from the gravity block 24 and the bumps on the road surface and transmit it to the rotating seat 2.

[0038] The flexible connector 5 is usually made of a material with certain flexibility and durability, such as metal wire, steel wire rope or high-strength synthetic fiber. It can withstand a certain amount of tension and pressure, and deform when subjected to external force to absorb and disperse vibration energy. The upper end of the flexible connector 5 is fixedly connected to the anchor head 13, and the lower end is connected to the gravity block 24 through the channel. This connection method ensures that the flexible connector 5 can smoothly transmit force and movement to the gravity block 24 when subjected to external force, and buffer and attenuate vibration energy through the movement of the gravity block 24.

[0039] In summary, the fixed seat 3, the slot 4, the channel and the anchor head 13 and the flexible connector 5 on the side of the rotating seat 2 together constitute a stable and flexible connection system, which provides important structural support for the gravity-type seismic isolation mechanism 14 in the vehicle-mounted CT system. This design not only ensures a stable connection between the rotating seat 2 and the gravity block 24, but also allows the gravity block 24 to move smoothly when subjected to road bumps to buffer and attenuate vibration energy, thereby protecting the CT host 1 from damage.

[0040] Furthermore, a conical slide groove 6 is provided inside the mounting seat 11, the upper end of the slide groove 6 is small and the lower end is large, and the upper end of the slide groove 6 passes through the top surface of the mounting seat 11, the shape of the gravity block 24 is a cone adapted to the slide groove 6, and the elastomer 12 is fixed in the slide groove 6.

[0041] Specifically, the slide groove 6 is designed to be conical, with a smaller upper end and a larger lower end. This design allows the weight block 24 to slide smoothly along the conical surface in the slide groove 6, while providing a certain guiding effect. The upper end of the slide groove 6 passes through the top surface of the mounting seat 11, providing a channel for the installation and movement of the weight block 24, and can also prevent the weight block 24 from sliding out of the slide groove 6. The inner wall of the slide groove 6 is a smooth surface. The conical slide groove 6 not only provides a stable sliding track for the weight block 24, but also enhances the seismic isolation effect through its conical structure. When the weight block 24 slides in the slide groove 6, the conical surface can guide the weight block 24 to move along a predetermined path and gradually disperse and attenuate the vibration energy. The shape of the weight block 24 is designed to be a cone that is fully compatible with the conical slide groove 6. This design ensures that the weight block 24 can slide stably in the slide groove 6 without displacement or jamming. The gravity block 24 serves as the main mass body of the seismic isolation mechanism 14. Its conical design enables it to move smoothly along the conical surface of the slide chute 6 when it is subjected to the impact force caused by road bumps. During the movement, the gravity block 24 will squeeze or stretch the elastomer 12, thereby absorbing and attenuating the vibration energy. The elastomer 12 is fixed in the slide chute 6, usually located above or below the gravity block 24 (or both) to provide the necessary elasticity and damping. The elastomer 12 can be fixed in the slide chute 6 in various ways, such as using adhesives, bolts or other mechanical fixing devices.

[0042] The elastomer 12 is one of the key components in the seismic isolation mechanism 14. It can deform and absorb vibration energy when the gravity block 24 moves. When the gravity block 24 moves due to impact force, it will squeeze or stretch the elastomer 12, causing the elastomer 12 to deform and store energy. As the impact force weakens or disappears, the elastomer 12 will gradually return to its original state and release the stored energy, thereby playing a role in buffering and seismic isolation.

[0043] Working principle: When a vehicle is traveling on an uneven road, the vibrations generated by the bumps in the road surface will be transmitted to the mounting seat 11 and the slide 6, and the vibrations will cause the gravity block 24 to move up and down along the conical surface in the slide 6. During the movement, the gravity block 24 will squeeze or stretch the elastomer 12, causing the elastomer 12 to deform and absorb vibration energy. With the continuous movement of the gravity block 24 and the repeated deformation and recovery of the elastomer 12, the vibration energy is gradually dispersed and attenuated. Finally, when the vibration energy is reduced to a certain level, the gravity block 24 and the elastomer 12 will return to a relatively stable state, thereby protecting the CT host 1 from damage.

[0044] In summary, the conical slot 6 inside the mounting seat 11, the conical weight block 24 and the elastic body 12 fixed in the slot 6 together constitute an efficient seismic isolation system. The system absorbs and attenuates the vibration energy generated by road bumps through the movement of the weight block 24 and the deformation of the elastic body 12, thereby protecting the precision components in the vehicle-mounted CT system from damage.

[0045] Furthermore, the elastic body 12 is an air bag or a spring that matches the shape of the slide groove 6 .

[0046] Specifically, the elastic body 12 is a common air bag or spring, one end of the elastic body 12 is connected to the inner wall of the slide groove 6, and the other end is connected to the gravity block 24, so that the up and down movement of the gravity block 24 can squeeze or stretch the elastic body 12 to achieve buffering energy consumption.

[0047] Furthermore, the flexible connecting member 5 is a steel wire rope, which is formed by spirally winding a plurality of steel wires, and a rubber body is sandwiched between the steel wires.

[0048] Specifically, the tight winding of multiple strands of thin steel wires makes the steel wire rope have extremely high tensile strength, which can withstand the impact force from the gravity block 24 and the bumpy road surface. The rubber body sandwiched between the steel wires of the steel wire rope is an innovative design, which further enhances the seismic isolation effect of the flexible connector 5. The rubber body has good elasticity and damping properties, and can deform and absorb vibration energy when the steel wire rope is subjected to external force, thereby reducing the impact on the CT host 1.

[0049] The addition of the rubber body not only improves the seismic isolation performance of the flexible connector 5, but also increases its anti-fatigue and anti-vibration capabilities. The elasticity of the rubber body can alleviate the stress concentration problem of the steel wire rope during long-term use and extend its service life.

[0050] Working principle: When a vehicle travels on an uneven road, the vibrations generated by the bumps on the road surface will be transmitted to the rotating seat 2 and the flexible connector 5. Due to the flexibility of the steel wire rope and the elasticity of the rubber body, the flexible connector 5 can deform and absorb vibration energy when subjected to external force. This deformation causes the vibration energy to be partially attenuated before it is transmitted to the gravity block 24. Subsequently, the gravity block 24 moves up and down along the conical surface in the slide 6, further dispersing and attenuating the vibration energy. Finally, when the vibration energy is reduced to a certain level, it will be completely absorbed or dissipated by the elastomer 12 and the steel wire rope, thereby protecting the CT host 1 from damage.

[0051] Furthermore, the bottom surface of the rotating seat 2 is a convex spherical surface 10 , and the top surface of the mounting seat 11 is provided with a concave spherical surface 8 matched with the convex spherical surface 10 .

[0052] Specifically, in order to improve the wear resistance between the contact surface of the rotating seat 2 and the mounting seat 11, a polytetrafluoroethylene wear-resistant plate 9 can be embedded on the convex spherical surface 10, and a stainless steel plate 7 can be fixed on the concave spherical surface 8. The cooperation between the wear-resistant plate 9 and the stainless steel plate 7 can reduce the rotational friction, so that the relative rotation between the rotating seat 2 and the mounting seat 11 is more flexible, so that the seismic isolation effect on the CT host 1 is better.

[0053] Example 3

[0054] Furthermore, the seismic isolation mechanism 14 is a fluid-type seismic isolation mechanism 14, which includes a pull rod 17 and a piston 19. Fixed seats 3 are provided on both sides of the rotating seat 2. The upper end of the pull rod 17 is hinged to the fixed seat 3, and the lower end of the pull rod 17 is connected to the piston 19. A downward first flow channel 15 is provided on the top surface of the mounting seat 11, and the piston 19 is adapted to slide in the first flow channel 15. A baffle 18 is provided on the top of the first flow channel 15, and the pull rod 17 passes through the baffle 18. A sealing ring 20 is embedded circumferentially in the piston 19. A second flow channel 16 connecting the first flow channel 15 is provided inside the mounting seat 11. The first flow channel 15 and the second flow channel 16 form a U-shape, and fluid is injected into the first flow channel 15 and the second flow channel 16. The pull rods 17 on both sides of the rotating seat 2 move up and down alternately and squeeze the fluid to buffer the impact of road bumps on the CT host 1.

[0055] Furthermore, the fluid is hydraulic oil or water.

[0056] On the basis of Example 1, Figure 3 , Figure 4 , Figure 5 As shown, the pull rod 17 is a key component connecting the fixed seat 3 and the piston 19. The upper end is hinged to the fixed seat 3, and the lower end is connected to the piston 19. When the pull rod 17 is subjected to the external force of the vehicle's bumping and impact, it can drive the piston 19 to move up and down in the first flow channel 15. The piston 19 is adapted to slide in the first flow channel 15, and a sealing ring 20 is embedded in its circumference to ensure that the fluid does not leak. The up and down movement of the piston 19 will change the volume and pressure of the fluid in the first flow channel 15. Fixed seats 3 are provided on both sides of the rotating seat 2 for supporting and fixing the pull rod 17. The top surface of the mounting seat 11 is provided with a downward first flow channel 15, in which the piston 19 slides. A second flow channel 16 connected to the first flow channel 15 is also provided inside the mounting seat 11, and the two together constitute a U-shaped flow channel. Fluid (such as hydraulic oil or water) is injected into the flow channel to absorb and transmit vibration energy. A baffle 18 is provided at the top opening of the first flow channel 15. The pull rod 17 passes through the baffle 18 and enters the flow channel. The baffle 18 is integrally formed with the mounting seat 11. The baffle 18 serves to limit the upward displacement of the piston 19.

[0057] Working principle: When a vehicle travels on an uneven road, the vibration generated by the bumps on the road will be transmitted to the rotating seat 2 and the tie rod 17. The vibration causes the tie rod 17 to move up and down, thereby driving the piston 19 to slide up and down in the first flow channel 15. Since the first flow channel 15 and the second flow channel 16 form a U shape, the movement of the piston 19 will change the volume and pressure of the fluid in the flow channel. The fluid absorbs and attenuates the vibration energy during the flow and compression process in the flow channel. When the tie rod 17 on one side moves downward, the piston 19 squeezes the fluid in the first flow channel 15 on the left, causing part of the fluid to flow to the first flow channel 15 on the right through the second flow channel 16, thereby pushing up the piston 19 in the first flow channel 15 on the right, and the tie rod 17 of the piston 19 moves upward; when the tie rod 17 on the right moves downward, the fluid is squeezed from the first flow channel 15 on the right through the second flow channel 16 to the first flow channel 15 on the left and pushes the piston 19 to move. Through this reciprocating fluid flow and compression process, the fluid-type seismic isolation mechanism 14 can effectively absorb and attenuate the vibration energy generated by road bumps, thereby protecting the CT host 1 from damage.

[0058] When the ambulance makes a sharp turn, such as turning right, a leftward centrifugal force will be generated on the CT main unit 1, and at the same time, the fluid in the second flow channel 16 will move leftward, thereby driving the liquid level in the first flow channel 15 on the right to drop, and the liquid level in the first flow channel 15 on the left to rise. The fluid in the first flow channel 15 on the left pushes the piston 19 upward, causing the left side of the rotating seat 2 to rise and the right side to fall. The pull rod 17 on the right pushes the piston 19 downward, and the rotating seat 2 tilted to the right drives the CT main unit 1 to be in a tilted state together. In this way, after the mechanical balance of the top surface of the rotating seat 2 is decomposed, the CT main unit 1 generates a rightward component force, which is the centripetal force. The centripetal force is used to offset the centrifugal force caused by the sharp turn of the ambulance, thereby avoiding the risk of the CT main unit 1 being thrown out and damaged in the sharp turn. Similarly, the same principle applies to a sharp turn to the left.

[0059] Example 4

[0060] Furthermore, the bottom surface of the piston 19 is provided with an installation cavity 21, and a pressure sensor 22 is provided in the installation cavity 21. A pressure-sensitive diaphragm 23 for sealing the pressure sensor 22 with the installation cavity 21 is provided at the opening of the installation cavity 21, and the sensing end of the pressure sensor 22 is in close contact with the pressure-sensitive diaphragm 23.

[0061] On the basis of Example 3, a mounting cavity 21 is provided on the bottom surface of the piston 19, and this cavity is used to install and fix the pressure sensor 22. The design of the mounting cavity 21 should ensure that the pressure sensor 22 can be firmly installed therein. A pressure sensor 22 is provided in the mounting cavity 21, and the sensor is used to monitor the pressure changes of the fluid in the flow channel in real time. The selection of the pressure sensor 22 should be carried out according to actual needs to ensure that its parameters such as measurement range, accuracy and response time meet the system requirements. A pressure-sensitive diaphragm 23 is provided at the opening of the mounting cavity 21, which is used to seal the pressure sensor 22 in the mounting cavity 21. The pressure-sensitive diaphragm 23 is a thin film that can transmit pressure but is impermeable to fluids. It tightly covers the opening of the mounting cavity 21 and is in close contact with the sensing end of the pressure sensor 22. When the pressure of the fluid in the flow channel changes, the pressure-sensitive diaphragm 23 will deform accordingly and transmit this change to the sensing end of the pressure sensor 22.

[0062] Working principle: When the vehicle is traveling on an uneven road, the vibration caused by the bumps in the road will cause the pull rod 17 to move up and down, thereby driving the piston 19 to slide in the first flow channel 15. The movement of the piston 19 will change the volume and pressure of the fluid in the flow channel, and this pressure change is transmitted to the sensing end of the pressure sensor 22 through the pressure-sensitive diaphragm 23. The pressure sensor 22 converts the sensed pressure signal into an electrical signal and transmits it to the control system or monitoring equipment through a signal transmission system. The control system can adjust the working state of the seismic isolation mechanism 14 in real time according to the received pressure signal to better absorb and attenuate vibration energy. At the same time, the monitoring equipment can also record and analyze pressure data to evaluate the performance of the seismic isolation mechanism 14 and the operating state of the system. When using the CT host 1, it is possible to determine whether the rotating seat 2 is in a horizontal state by whether the readings of the pressure sensors 22 on both sides are the same, thereby knowing whether the CT host 1 is horizontal before working, so as to ensure the quality of the scan of the CT host 1. If the liquid levels in the first flow channels 15 on both sides are not level, the pressure acting on the pressure-sensitive diaphragm 23 is also different. The force acting on the pressure-sensitive diaphragm 23 at the end with a higher liquid level is greater, so that the pressure sensor 22 can detect whether the rotating seat 2 is horizontal.

[0063] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A seismic isolation vehicle-mounted CT system, comprising a CT machine body installed on a vehicle, characterized in that: The CT machine body comprises a CT mainframe (1), a rotating seat (2), and a mounting seat (11); the mounting seat (11) is connected to a vehicle; the CT mainframe (1) is mounted on the top surface of the rotating seat (2); the bottom surface of the rotating seat (2) and the top surface of the mounting seat (11) are in spherical contact; and seismic isolation mechanisms (14) for buffering the impact of road bumps on the CT mainframe (1) are symmetrically provided on both sides of the rotating seat (2); The seismic isolation mechanism (14) is a gravity-type seismic isolation mechanism (14), comprising a flexible connector (5), a gravity block (24), and an elastic body (12); the gravity blocks (24) on both sides have the same weight; the upper end of the flexible connector (5) is connected to the side wall of the rotating seat (2) in a shape-locking manner; the lower end of the flexible connector (5) is connected to the gravity block (24); the gravity block (24) is slidably arranged inside the mounting seat (11); the elastic body (12) is arranged between the top of the gravity block (24) and the inner wall of the mounting seat (11); the gravity blocks (24) on both sides of the rotating seat (2) move up and down alternately and squeeze the elastic body (12) to buffer the impact of road bumps on the CT host (1).

2. The seismic isolation vehicle-mounted CT system according to claim 1, characterized in that: A fixed seat (3) is provided on the side of the rotating seat (2), a slot (4) is provided inside the fixed seat (3), a channel for the flexible connector (5) to pass through is provided on the bottom surface of the slot (4), the channel is arranged vertically and is connected to the slot (4), an adapted anchor head (13) is provided in the slot (4), the bottom surface of the anchor head (13) is fixedly connected to the flexible connector (5), and the lower end of the flexible connector (5) passes through the channel and is connected to the gravity block (24).

3. The seismic isolation vehicle-mounted CT system according to claim 1, characterized in that: A conical slide groove (6) is provided inside the mounting seat (11), the slide groove (6) is small at the upper end and large at the lower end, and the upper end of the slide groove (6) passes through the top surface of the mounting seat (11), the gravity block (24) is in the shape of a cone that matches the slide groove (6), and the elastic body (12) is fixed in the slide groove (6).

4. The seismic isolation vehicle-mounted CT system according to claim 3, characterized in that: The elastic body (12) is an air bag or a spring whose shape matches that of the slide groove (6).

5. The seismic isolation vehicle-mounted CT system according to claim 1, characterized in that: The flexible connecting member (5) is a steel wire rope, which is formed by spirally winding a plurality of steel wires, and a rubber body is sandwiched between the steel wires.

6. The seismic isolation vehicle-mounted CT system according to claim 1, characterized in that: The bottom surface of the rotating seat (2) is a convex spherical surface (10), and the top surface of the mounting seat (11) is provided with a concave spherical surface (8) adapted to the convex spherical surface (10).

7. The seismic isolation vehicle-mounted CT system according to claim 1, characterized in that: The seismic isolation mechanism (14) is a fluid-type seismic isolation mechanism (14), comprising a pull rod (17) and a piston (19). Fixed seats (3) are provided on both sides of the rotating seat (2). The upper end of the pull rod (17) is hinged to the fixed seat (3), and the lower end of the pull rod (17) is connected to the piston (19). A first downward flow channel (15) is provided on the top surface of the mounting seat (11). The piston (19) is adapted to be slidably disposed in the first flow channel (15). A stopper is provided on the top of the first flow channel (15). The piston (19) is embedded with a sealing ring (20) in the circumferential direction. A second flow channel (16) communicating with the first flow channel (15) is provided inside the mounting seat (11). The first flow channel (15) and the second flow channel (16) form a U-shape. Fluid is injected into the first flow channel (15) and the second flow channel (16). The pull rods (17) on both sides of the rotating seat (2) move up and down alternately and squeeze the fluid to buffer the impact of road bumps on the CT host (1).

8. The seismic isolation vehicle-mounted CT system according to claim 7, characterized in that: The fluid is hydraulic oil or water.

9. The seismic isolation vehicle-mounted CT system according to claim 7, characterized in that: The bottom surface of the piston (19) is provided with a mounting cavity (21), a pressure sensor (22) is provided in the mounting cavity (21), and a pressure-sensitive diaphragm (23) for sealing the pressure sensor (22) with the mounting cavity (21) is provided at the opening of the mounting cavity (21), and the sensing end of the pressure sensor (22) is in close contact with the pressure-sensitive diaphragm (23).

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