A vehicle-mounted CT system

Abstract

The application relates to the technical field of medical detection devices, and discloses a vehicle-mounted CT system which comprises a CT device, an enclosing platform and a bearing buffer platform. A dynamic electromagnetic friction damping buffer surrounds the periphery of the bearing buffer platform. The dynamic electromagnetic friction damping buffer comprises a vertical component and a horizontal component. The relative distance between the vertical component and the horizontal direction of the buffer pin is negatively correlated with the electromagnetic magnetic force of the vertical component itself. The relative distance between the horizontal component and the vertical direction of the buffer pin is negatively correlated with the electromagnetic magnetic force of the horizontal component itself. The vehicle state is monitored without a controller, the motion direction of the CT device is judged, and then the CT device is controlled to be started, so that the control logic is simplified. The vertical counter-thrust electromagnet triggered by the motion of the CT device is definitely in front of the motion direction of the CT device, the number of reset motions is reduced, the buffer direction is diversified, and the combined buffer is diversified.

Description

Technical Field

[0001] This invention relates to the field of medical testing equipment technology, specifically a vehicle-mounted CT system. Background Technology

[0002] Mobile CT scanners have solved the problem of fixed CT scan areas, providing diagnostic support for remote regions. Because CT equipment is highly sensitive, frequent turning, braking, and starting by the vehicle during transport can easily damage it. To minimize the impact of vehicle travel on the CT equipment, current CT scanners are equipped with cushioning structures.

[0003] Chinese patent discloses a vehicle-mounted CT system (CN118924316A), which incorporates an electromagnetic buffer device within the CT system. The non-contact buffer is in standby mode. During emergency braking, an acceleration sensor detects the vehicle's rapid deceleration and transmits this signal to the control board. Based on the received signal, the control board first activates the contact buffer, enabling it to respond quickly and initially absorb impact energy. As the impact energy continues to transfer, when the contact buffer approaches its buffering limit, the non-contact buffer is activated to continue absorbing the remaining impact energy, ensuring the CT main unit is protected from damage.

[0004] A vehicle-mounted CT system (CN118924316A) has the following problems in practical applications:

[0005] 1. During vehicle operation, turning, braking, and acceleration occur. During acceleration and braking, the CT scanner tends to move forward and backward; during turning, it tends to move left and right. The patented unidirectional electromagnetic buffer is difficult to buffer when the CT scanner undergoes other directional displacements.

[0006] 2. The energy of the CT scanner is absorbed by both the contact and non-contact buffer sections. The elastic components of the contact buffer section release the stored energy, causing the CT scanner to reset. During the reset process, the CT scanner applies force to either the contact or non-contact buffer section, resulting in multiple movements during the reset process, with each movement gradually decreasing in amplitude until it stops. Although this reduces the impact of vibration and displacement on the CT scanner when it is rigidly connected to the vehicle body, the repeated small reset movements still affect the delicate electrical components inside the CT scanner.

[0007] 3. This patent uses signal-controlled energization of the electromagnetic structure, a method that is difficult to apply. This is because it requires determining the displacement trend of the CT equipment based on the vehicle's driving posture. For example, during deceleration while turning, the CT equipment's movement direction could be either left-front or right-front. In this case, the electromagnetic resistance must be activated at either the left-front or right-front position, thus the direction of the electromagnetic resistance needs to be aligned with the kinetic energy direction of the CT equipment to counteract it. If the electromagnetic resistance is activated at the right-rear or left-rear direction, the electromagnetic resistance will actually increase the kinetic energy of the CT equipment. Summary of the Invention

[0008] The purpose of this invention is to provide a vehicle-mounted CT system that uses a dynamic electromagnetic friction damping buffer to supplement the buffering platform and adjust the damping, simplifying the control logic. Furthermore, the vertical reverse push electromagnet triggered by the movement of the CT device must be in front of the movement direction of the CT device, reducing the number of reset movements, diversifying the buffering direction, and diversifying the combined buffering to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A vehicle-mounted CT system includes a CT device, a surrounding platform, and a load-bearing buffer platform. The surrounding platform surrounds the load-bearing buffer platform, and the load-bearing buffer platform is supported by elastic elements at the center of the surrounding platform. Multiple dynamic electromagnetic friction damping buffers are distributed in a ring around the surrounding platform, and the dynamic electromagnetic friction damping buffers surround the load-bearing buffer platform. Sliding belts are slidably connected to all four sides of the load-bearing buffer platform, and buffer pins that cooperate with the dynamic electromagnetic friction damping buffers are fixedly connected to the outer walls of the sliding belts.

[0011] The dynamic electromagnetic friction damping buffer includes a vertical component and a horizontal component. The horizontal relative distance between the vertical component and the buffer pin is negatively correlated with the electromagnetic force of the vertical component itself. The vertical relative distance between the horizontal component and the buffer pin is negatively correlated with the electromagnetic force of the horizontal component itself.

[0012] As a further embodiment of the present invention: the number of vertical components is two, the two vertical components are located at the upper and lower ends of the buffer pin, the vertical component includes two first sliding seats symmetrically distributed around the buffer pin and a vertical friction wedge that slides on the surface of the first sliding seats, the vertical friction wedge is elastically connected to the first sliding seats by a first spring rod, and the upper and lower end faces of the buffer pin are provided with vertical buffer slopes, the vertical buffer slopes are in contact with the slopes of the vertical friction wedges.

[0013] As a further embodiment of the present invention: the upper and lower end faces of the buffer pin are both fixedly connected to a vertical reverse electromagnet via a connecting telescopic rod. The upper and lower end faces of the buffer pin are fixedly connected to a vertical permanent magnet corresponding to the vertical reverse electromagnet. The vertical permanent magnet and the vertical reverse electromagnet have a magnetic repulsive force. A first power supply sliding rheostat is provided between the vertical reverse electromagnet and the external power supply line. The first power supply sliding rheostat adjusts the resistance of the power supply circuit of the vertical reverse electromagnet as the vertical friction wedge moves. The greater the contraction of the first spring rod, the smaller the resistance value adjusted by the first power supply sliding rheostat.

[0014] As a further embodiment of the present invention: the number of the horizontal components is one, the horizontal component is located between the two vertical components, the horizontal component includes an inverted sliding seat and two horizontal friction wedges, the horizontal friction wedges are elastically connected to the inverted sliding seat through a second spring rod, and the front end of the buffer pin is provided with two horizontal buffer slopes that cooperate with the horizontal friction wedges to slide.

[0015] As a further embodiment of the present invention: a horizontal permanent magnet is provided at the end of the buffer pin, and a horizontal reverse electromagnet is provided directly opposite the C-shaped sliding seat and the horizontal permanent magnet. There is a magnetic repulsion between the horizontal reverse electromagnet and the horizontal permanent magnet. A second power supply sliding rheostat is provided between the horizontal reverse electromagnet and the external power supply line. The second power supply sliding rheostat adjusts the resistance of the power supply circuit of the horizontal reverse electromagnet as the horizontal friction wedge moves. The greater the contraction of the second spring rod, the smaller the resistance value adjusted by the second power supply sliding rheostat.

[0016] As a further aspect of the present invention: the end of the horizontal buffer slope near the horizontal reverse electromagnet is a narrow end, and the distance between the two vertical buffer slopes is greater than the width of the narrow end of the horizontal reverse electromagnet.

[0017] As a further embodiment of the present invention: the surrounding platform includes a bottom frame and a top frame, the bottom frame is fixed to the bottom surface of the vehicle, the top frame is fixedly connected to the top of the bottom frame, and the dynamic electromagnetic friction damping buffer is fixed in the gap between the bottom frame and the top frame.

[0018] As a further embodiment of the present invention: the vertical reverse electromagnet located at the top always slides on the bottom surface of the top layer frame, and the vertical reverse electromagnet located at the bottom always slides on the top surface of the bottom layer frame.

[0019] As a further embodiment of the present invention: the top-level frame and the load-bearing buffer platform are connected by a flexible connecting frame.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This technical solution employs a dynamic electromagnetic friction damping buffer as a supplementary buffering and damping control platform. The movement of the platform triggers the electromagnetic buffering and adjustment of its strength. This eliminates the need for a controller to monitor vehicle status, determine the CT equipment's movement direction, and then activate the system, simplifying the control logic. Furthermore, the vertical reverse-push electromagnet triggered by the CT equipment's movement is always positioned in front of the CT equipment's movement direction, reducing the number of reset movements and allowing for diverse buffering directions and combinations. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A three-dimensional schematic diagram of a vehicle-mounted CT system;

[0024] Figure 2 for Figure 1 A 3D schematic diagram after the top-level framework has been removed;

[0025] Figure 3 A three-dimensional schematic diagram of a dynamic electromagnetic friction damping buffer in a vehicle-mounted CT system;

[0026] Figure 4 A three-dimensional schematic diagram of a dynamic electromagnetic friction damping buffer in a vehicle-mounted CT system after the vertical component has been removed.

[0027] Figure 5 for Figure 4 A three-dimensional diagram from another perspective;

[0028] Figure 6 A three-dimensional schematic diagram of a dynamic electromagnetic friction damping buffer in a vehicle-mounted CT system after the horizontal component has been removed;

[0029] Figure 7 for Figure 6 A three-dimensional diagram from another perspective;

[0030] In the diagram: 1. CT equipment; 2. Enclosing platform; 21. Bottom frame; 22. Top frame; 23. Flexible connecting frame; 3. Bearing buffer platform; 31. Sliding belt plate; 32. Buffer pin; 321. Horizontal buffer ramp; 322. Vertical buffer ramp; 323. Horizontal permanent magnet; 324. Connecting telescopic rod; 325. Vertical permanent magnet; 4. Dynamic electromagnetic friction damping buffer; 41. Vertical component; 411. First sliding seat; 412. Vertical friction wedge; 413. First spring rod; 414. First power supply sliding rheostat; 415. Vertical reverse electromagnet; 42. Horizontal component; 421. C-shaped sliding seat; 422. Horizontal friction wedge; 423. Second spring rod; 424. Second power supply sliding rheostat; 425. Horizontal reverse electromagnet. Detailed Implementation

[0031] Please see Figure 1-7 In this embodiment, the device includes a CT equipment 1, a surrounding platform 2, and a load-bearing buffer platform 3. The surrounding platform 2 surrounds the load-bearing buffer platform 3. The load-bearing buffer platform 3 is supported by elastic elements on the middle of the surrounding platform 2. Multiple dynamic electromagnetic friction damping buffers 4 are distributed in a ring around the surrounding platform 2, and the dynamic electromagnetic friction damping buffers 4 surround the load-bearing buffer platform 3.

[0032] In this embodiment: the surrounding platform 2 is built on the vehicle's interior floor, defining the displacement area of ​​the load-bearing buffer platform 3. The bottom surface of the load-bearing buffer platform 3 is connected to the vehicle floor via rubber pads and rubber pillars. The rubber pads and pillars not only provide vertical cushioning but also offer some cushioning when the load-bearing buffer platform 3 undergoes horizontal displacement. The surrounding platform 2 confines the load-bearing buffer platform 3 within a safe displacement range. A dynamic electromagnetic friction damping buffer 4 is installed around the periphery of the surrounding platform 2, providing secondary cushioning and dynamically adjusting the resistance of the load-bearing buffer platform 3.

[0033] To achieve multi-directional dynamic application of buffer resistance, this embodiment makes the following improvements:

[0034] The four sides of the bearing buffer platform 3 are slidably connected with sliding belt plates 31, and the outer walls of the sliding belt plates 31 are fixedly connected with buffer pins 32 that cooperate with the dynamic electromagnetic friction damping buffer 4.

[0035] Improvements and advantages: Please refer to Figure 2The buffer pin 32 is inserted into the interior of the dynamic electromagnetic friction damping buffer 4, restricting the displacement direction of the buffer pin 32. Without the sliding plate 31, the load-bearing buffer platform 3 cannot slide because its lateral movement is affected by the vertical dynamic electromagnetic friction damping buffer 4. Therefore, after the sliding plate 31 is slidably connected to the load-bearing buffer platform 3, when the load-bearing buffer platform 3 moves laterally, the vertical edge of the load-bearing buffer platform 3 will experience relative displacement with the sliding plate 31.

[0036] The purpose of this improvement is to provide a basis for the multi-directional damping adjustment of the dynamic electromagnetic friction damping buffer 4, enabling the load-bearing buffer platform 3 to achieve uncontrolled automatic damping adjustment.

[0037] In this embodiment, the dynamic electromagnetic friction damping buffer 4 includes a vertical component 41 and a horizontal component 42. The horizontal relative distance between the vertical component 41 and the buffer pin 32 is negatively correlated with the electromagnetic force exerted by the vertical component 41 on the buffer pin 32 itself. The vertical relative distance between the horizontal component 42 and the buffer pin 32 is negatively correlated with the electromagnetic force exerted by the horizontal component 42 on the buffer pin 32 itself.

[0038] In this embodiment, the load-bearing buffer platform 3 is connected to the vehicle body via rubber pillars and rubber pads. The rubber pillars and rubber pads provide vertical and horizontal buffering for the load-bearing buffer platform 3. Vertical bumps generated during vehicle formation cause the load-bearing buffer platform 3 to have an upward and downward displacement tendency; therefore, a vertical component 41 and a horizontal component 42 are provided. When the buffer pin 32 approaches the vertical component 41, the distance between the buffer pin 32 and the vertical or horizontal component 41 decreases, and the electromagnetic force applied by the vertical or horizontal component 42 to the buffer pin 32 increases.

[0039] Improved principle: Magnetic force is related to spacing. When the vertical component 41, horizontal component 42, and buffer pin 32 are infinitely close, the magnetic repulsion force exerted by the vertical component 41 and horizontal component 42 on the buffer pin 32 is at its maximum. Furthermore, the electromagnetic force of the vertical component 41 and horizontal component 42 themselves increases, resulting in a greater increase in electromagnetic force for every unit length the buffer pin 32 moves closer to the vertical component 41 and horizontal component 42. Similarly, when the buffer pin 32 resets due to electromagnetic repulsion, it moves away from the vertical component 41 and horizontal component 42, thus reducing the electromagnetic repulsion force exerted by the vertical component 41 and horizontal component 42 on the buffer pin 32.

[0040] Vertical buffering embodiment of dynamic electromagnetic friction damping buffer 4:

[0041] In this embodiment, there are two vertical components 41, located at the upper and lower ends of the buffer pin 32. Each vertical component 41 includes two first sliding seats 411 symmetrically distributed around the buffer pin 32 and vertical friction wedges 412 sliding on the surface of the first sliding seats 411. The vertical friction wedges 412 are elastically connected to the first sliding seats 411 by a first spring rod 413. The upper and lower end faces of the buffer pin 32 are each provided with a vertical buffer slope 322, which fits against the slope of the vertical friction wedges 412. The upper and lower end faces of the buffer pin 32 are connected by a telescopic rod. A vertical reverse electromagnet 415 is fixedly connected to 324. Vertical permanent magnets 325 corresponding to the vertical reverse electromagnet 415 are fixedly connected to the upper and lower end faces of the buffer pin 32. There is a magnetic repulsion between the vertical permanent magnet 325 and the vertical reverse electromagnet 415. A first power supply sliding rheostat 414 is provided between the vertical reverse electromagnet 415 and the external power supply line. The first power supply sliding rheostat 414 adjusts the resistance of the power supply circuit of the vertical reverse electromagnet 415 as the vertical friction wedge 412 is displaced. The greater the contraction of the first spring rod 413, the smaller the resistance value adjusted by the first power supply sliding rheostat 414.

[0042] Objective of the improvement: To improve the buffering performance of the bearing buffer platform 3 and reduce the number of reset movements of the bearing buffer platform 3 by using a dual damping state of friction damping and electromagnetic damping.

[0043] Improved principle: The first sliding seat 411 is fixed at the bottom frame 21 and the top frame 22, and the vertical friction wedge 412 is in contact with the vertical buffer slope 322 of the buffer pin 32. When the buffer pin 32 moves, part of the kinetic energy is converted into heat energy through friction between the vertical buffer slope 322 and the vertical friction wedge 412. Another part of the kinetic energy is applied to the first spring rod 413, which stores energy after elastic deformation. The vertical friction wedge 412 moves to both sides and approaches the vertical reverse electromagnet 415. As the vertical friction wedge 412 moves to both sides, it pushes the first power supply sliding rheostat 414 to reduce the resistance at the power supply circuit of the vertical reverse electromagnet 415. With the power supply voltage unchanged, the resistance decreases, the current of the vertical reverse electromagnet 415 increases, and the magnetic force of the vertical reverse electromagnet 415 increases. The increase in magnetic repulsion between the vertical reverse electromagnet 415 and the vertical permanent magnet 325 at the top of the buffer pin 32 becomes larger and larger.

[0044] The vertical kinetic energy of the buffer pin 32 is completely absorbed. The bearing buffer platform 3 is affected by the reset of elastic materials such as rubber pillars and rubber pads. The kinetic energy released by the elastic materials is further reduced by the friction between the vertical friction wedge 412 and the vertical buffer slope 322. The magnetic repulsion force applied by the vertical reverse electromagnet 415 to the buffer pin 32 becomes smaller and smaller. Until the buffer pin 32 is reset, the elastic loss of the reset of the rubber pillars and rubber pads has been greatly reduced. After the bearing buffer platform 3 is reset, it moves in the opposite direction. The reverse vertical friction wedge 412 further rubs against the vertical buffer slope 322. The loss after the release of elastic stored energy increases significantly, reducing the number of reset movements and diversifying the buffer.

[0045] Application method:

[0046] A switch is provided on the surface of the first sliding seat 411. Figure 6 The surface of the first sliding seat 411 is located near the right-angled edge of the vertical friction wedge 412. The vertical friction wedge 412 is triggered immediately upon movement. When the vertical friction wedge 412 displaces, a trigger switch is activated to power the vertical reverse electromagnet 415, which is adjusted via the first power supply sliding rheostat 414. As explained above, after the CT device 1 moves, the displacement of the vertical friction wedge 412 adjusts the magnetic force of the vertical reverse electromagnet 415. This eliminates the need for the controller to monitor the vehicle status, determine the direction of movement of the CT device 1, and then activate the control, simplifying the control logic. Furthermore, the vertical reverse electromagnet 415 triggered by the movement of the CT device 1 is always in front of the direction of movement of the CT device 1.

[0047] Further details: The buffer pin 32 and the horizontal reverse electromagnet 425 are relatively displaced. The vertical permanent magnet 325 and the vertical reverse electromagnet 415 are connected by the connecting telescopic rod 324. The vertical reverse electromagnet 415 and the vertical permanent magnet 325 are always perpendicular to each other, and the magnetic force of the vertical reverse electromagnet 415 can always act on the vertical permanent magnet 325.

[0048] Horizontal buffer example of dynamic electromagnetic friction damping buffer 4:

[0049] In this embodiment, there is one horizontal component 42, located between two vertical components 41. The horizontal component 42 includes an inverted sliding seat 421 and two horizontal friction wedges 422. The horizontal friction wedges 422 are elastically connected to the inverted sliding seat 421 via a second spring rod 423. The front end of the buffer pin 32 is provided with two horizontal buffer slopes 321 that cooperate with and slide with the horizontal friction wedges 422. The end of the buffer pin 32 is provided with a horizontal permanent magnet 323. The inverted sliding seat 421 and... A horizontal reverse electromagnet 425 is positioned directly opposite the horizontal permanent magnet 323. The horizontal reverse electromagnet 425 and the horizontal permanent magnet 323 have a magnetic repulsion force. A second power supply sliding rheostat 424 is positioned between the horizontal reverse electromagnet 425 and the external power supply line. The second power supply sliding rheostat 424 adjusts the resistance of the power supply circuit of the horizontal reverse electromagnet 425 as the horizontal friction wedge 422 is displaced. The greater the contraction of the second spring rod 423, the smaller the resistance value adjusted by the second power supply sliding rheostat 424.

[0050] Improved principle: The horizontal buffer ramp 321 is located on both sides of the front end of the buffer pin 32. The buffer pin 32 moves horizontally, and the horizontal buffer ramp 321 pushes the horizontal friction wedge 422 to both sides, causing the second spring rod 423 to undergo elastic deformation. The horizontal friction wedge 422 drives the second power supply sliding rheostat 424 to move. The second power supply sliding rheostat 424 adjusts the control resistance of the horizontal reverse electromagnet 425. As the buffer pin 32 approaches the horizontal reverse electromagnet 425, its own magnetic force increases. The horizontal reverse electromagnet 425 and the horizontal permanent magnet 323 exhibit magnetic repulsion. The closer the horizontal permanent magnet 323 is to the horizontal reverse electromagnet 425, the greater the increase in the magnetic repulsion between them.

[0051] To achieve synchronized buffering with the vertical buffering implementation, the following improvements are made:

[0052] The end of the horizontal buffer ramp 321 closest to the horizontal reverse electromagnet 425 is the narrow end, and the distance between the two vertical buffer ramps 322 is larger than the width of the narrow end of the horizontal reverse electromagnet 425.

[0053] Please see Figure 3 When the buffer pin 32 moves vertically, the distance between the two vertical buffer ramps 322 is large, which horizontally pushes back the narrow end of the electromagnet 425. Therefore, the buffer pin 32 will not push the horizontal friction wedge 422 to either side. Similarly, when the buffer pin 32 moves towards the U-shaped sliding seat 421, only sliding friction will be generated between the vertical buffer ramps 322 and the vertical friction wedge 412. The vertical buffer ramps 322 will not push the vertical friction wedge 412 to move.

[0054] If the buffer pin 32 undergoes both vertical and horizontal displacement, the horizontal friction wedge 422 and the vertical friction wedge 412 will also be triggered simultaneously, and the horizontal reverse electromagnet 425 and the vertical reverse electromagnet 415 will apply resistance to the buffer pin 32 in the horizontal and vertical directions, respectively.

[0055] In this embodiment, the following improvements are made to avoid injury to personnel caused by a gap between the load-bearing buffer platform 3 and the surrounding platform 2:

[0056] In this embodiment, the surrounding platform 2 includes a bottom frame 21 and a top frame 22. The bottom frame 21 is fixed to the bottom surface of the vehicle, and the top frame 22 is fixedly connected to the top of the bottom frame 21. The dynamic electromagnetic friction damping buffer 4 is fixed in the gap between the bottom frame 21 and the top frame 22. The top frame 22 and the load-bearing buffer platform 3 are connected by a flexible connecting frame 23.

[0057] In this embodiment, the bottom frame 21 and the top frame 22 form a mezzanine space to house the dynamic electromagnetic friction damping buffer 4. There is a gap between the load-bearing buffer platform 3 and the top frame 22, therefore a flexible connecting frame 23 is provided. The flexible connecting frame 23 can be made of rubber. It connects the top surface of the load-bearing buffer platform 3 and the inner surface of the top frame 22, sealing the gap between them. The flexible connecting frame 23 utilizes its own elasticity to compensate for the movement distance between itself and the load-bearing buffer platform 3.

[0058] In this embodiment, the upper vertical reverse electromagnet 415 always slides on the bottom surface of the top frame 22, and the lower vertical reverse electromagnet 415 always slides on the top surface of the bottom frame 21.

[0059] In this embodiment, the top frame 22 and the bottom frame 21 can be equipped with grooves and sliders to restrict the movement position of the vertical reverse electromagnet 415, so that the vertical reverse electromagnet 415 will not be displaced in the vertical direction.

[0060] Additional explanation: The connecting wires between the vertical reverse electromagnet 415 and the first power supply sliding rheostat 414, and between the horizontal reverse electromagnet 425 and the second power supply sliding rheostat 424, are not shown in the attached diagram because they could easily lead to image distortion. The electrical connection method is a commonly used existing technology, and since the displacement distance of the vertical reverse electromagnet 415 is short, only pre-installed wiring for the vertical reverse electromagnet 415 is required for its use.

Claims

1. A vehicle-mounted CT system, comprising a CT device (1), a surrounding platform (2), and a support buffer platform (3), wherein the surrounding platform (2) surrounds the support buffer platform (3), and the support buffer platform (3) is supported by an elastic member at the center of the surrounding platform (2), characterized in that: Multiple dynamic electromagnetic friction damping buffers (4) are distributed in a ring around the surrounding platform (2). The dynamic electromagnetic friction damping buffers (4) surround the bearing buffer platform (3). Sliding belt plates (31) are slidably connected to the four sides of the bearing buffer platform (3). Buffer pins (32) that cooperate with the dynamic electromagnetic friction damping buffers (4) are fixedly connected to the outer walls of the sliding belt plates (31). The dynamic electromagnetic friction damping buffer (4) includes a vertical component (41) and a horizontal component (42). The horizontal relative distance between the vertical component (41) and the buffer pin (32) is negatively correlated with the electromagnetic force of the vertical component (41). The vertical relative distance between the horizontal component (42) and the buffer pin (32) is negatively correlated with the electromagnetic force of the horizontal component (42). There are two vertical components (41). The two vertical components (41) are located at the upper and lower ends of the buffer pin (32). Each vertical component (41) includes two first sliding seats (411) symmetrically distributed around the buffer pin (32) and a vertical friction wedge (412) sliding on the surface of the first sliding seat (411). The vertical friction wedge (412) is elastically connected to the first sliding seat (411) by a first spring rod (413). The upper and lower end faces of the buffer pin (32) are provided with vertical buffer slopes (322). The vertical buffer slopes (322) are in contact with the slopes of the vertical friction wedges (412).

2. The vehicle-mounted CT system according to claim 1, characterized in that: The upper and lower ends of the buffer pin (32) are fixedly connected to a vertical reverse electromagnet (415) via a connecting telescopic rod (324). The upper and lower ends of the buffer pin (32) are fixedly connected to a vertical permanent magnet (325) corresponding to the vertical reverse electromagnet (415). The vertical permanent magnet (325) and the vertical reverse electromagnet (415) have a magnetic repulsion force. A first power supply sliding rheostat (414) is provided between the vertical reverse electromagnet (415) and the external power supply line. The first power supply sliding rheostat (414) adjusts the resistance of the power supply circuit of the vertical reverse electromagnet (415) as the vertical friction wedge (412) is displaced. The greater the contraction of the first spring rod (413), the smaller the resistance value adjusted by the first power supply sliding rheostat (414).

3. The vehicle-mounted CT system according to claim 1, characterized in that: The number of the horizontal component (42) is one. The horizontal component (42) is located between the two vertical components (41). The horizontal component (42) includes an inverted sliding seat (421) and two horizontal friction wedges (422). The horizontal friction wedges (422) are elastically connected to the inverted sliding seat (421) through a second spring rod (423). The front end of the buffer pin (32) is provided with two horizontal buffer slopes (321) that cooperate with the horizontal friction wedges (422) to slide.

4. The vehicle-mounted CT system according to claim 3, characterized in that: A horizontal permanent magnet (323) is provided at the end of the buffer pin (32). A horizontal reverse electromagnet (425) is provided opposite the C-shaped sliding seat (421) and the horizontal permanent magnet (323). There is a magnetic repulsion between the horizontal reverse electromagnet (425) and the horizontal permanent magnet (323). A second power supply sliding rheostat (424) is provided between the horizontal reverse electromagnet (425) and the external power supply line. The second power supply sliding rheostat (424) adjusts the resistance of the power supply circuit of the horizontal reverse electromagnet (425) as the horizontal friction wedge (422) is displaced. The greater the contraction of the second spring rod (423), the smaller the resistance value adjusted by the second power supply sliding rheostat (424).

5. A vehicle-mounted CT system according to claim 4, characterized in that: The end of the horizontal buffer ramp (321) near the horizontal reverse electromagnet (425) is narrow, and the distance between the two vertical buffer ramps (322) is greater than the width of the narrow end of the horizontal reverse electromagnet (425).

6. A vehicle-mounted CT system according to claim 2, characterized in that: The enclosing platform (2) includes a bottom frame (21) and a top frame (22). The bottom frame (21) is fixed to the bottom surface of the vehicle. The top frame (22) is fixedly connected to the top of the bottom frame (21). The dynamic electromagnetic friction damping buffer (4) is fixed in the gap between the bottom frame (21) and the top frame (22).

7. A vehicle-mounted CT system according to claim 6, characterized in that: The upper vertical reverse electromagnet (415) always slides on the bottom surface of the top frame (22), and the lower vertical reverse electromagnet (415) always slides on the top surface of the bottom frame (21).

8. A vehicle-mounted CT system according to claim 6, characterized in that: The top-level frame (22) and the load-bearing buffer platform (3) are connected by a flexible connecting frame (23).

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