Buffering device and braking system for medical equipment

Abstract

The utility model provides a buffering device and a braking system for medical equipment. The buffering device comprises a buffering device base plate and a shaft installed on the buffering device base plate. The friction assembly is arranged on the shaft in a sleeving manner and comprises an inner ring structure and an outer ring structure which are concentrically arranged, and the outer ring structure can unidirectionally rotate relative to the inner ring structure; the friction plate is arranged on the shaft in a sleeving mode and makes contact with the axial end face of the inner ring structure; the linkage assembly is installed on the shaft and connected with the outer ring structure and the movement assembly; when the moving assembly moves in the first direction, the linkage assembly drives the outer ring structure and the inner ring structure to rotate synchronously, and the friction resistance of the friction plates on the inner ring structure forms buffer damping. And when moving in the direction opposite to the first direction, the outer ring structure is driven to freely rotate around the inner ring structure. According to the utility model, low-noise buffering in the electromagnet attraction process is realized in medical equipment, a pure mechanical structural design is adopted, complicated electric control equipment is not needed, and the manufacturing and maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic braking technology, and in particular relates to a buffer device and braking system for medical equipment. Background Technology

[0002] In medical equipment (such as X-ray gastrointestinal machines), electromagnets are commonly used for braking control of the bed panel. In existing technologies, the rapid engagement of electromagnets results in significant noise at the moment of contact, causing discomfort to patients. Current solutions reduce noise by adding an electromechanical device (such as a servo motor-driven push rod) between the electromagnet and the adsorption component, causing the electromagnet to slowly contact the adsorption surface. However, such solutions are complex, costly, and difficult to maintain. Therefore, there is an urgent need for a simple, low-cost, and highly reliable buffer device to achieve low-noise braking of electromagnets. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a buffer device and braking system for medical equipment, which reduces noise by slowing down the electromagnet's attraction speed and achieves rapid reset by using a unidirectional rotation mechanism, thus solving the problems of complex structure and high cost in the prior art.

[0004] To achieve the above-mentioned objectives and other related objectives, this utility model proposes a buffer device, comprising:

[0005] Buffer substrate;

[0006] A shaft, which is mounted on the buffer base plate;

[0007] A friction assembly is sleeved on the shaft, and the friction assembly includes a concentric inner ring structure and an outer ring structure, wherein the outer ring structure can rotate unidirectionally relative to the inner ring structure.

[0008] A friction plate, which is sleeved on the shaft and contacts the axial end face of the inner ring structure;

[0009] A linkage component is mounted on the shaft and connected to the outer ring structure and the motion component, respectively.

[0010] When the motion component moves in the first direction, the linkage component drives the outer ring structure and the inner ring structure to rotate synchronously, and the friction plate provides buffer damping against the frictional resistance of the inner ring structure; when the motion component moves in the opposite direction to the first direction, the linkage component drives the outer ring structure to rotate freely around the inner ring structure to achieve rapid reset.

[0011] In one embodiment of this utility model, a preload adjustment mechanism is further included. The preload adjustment mechanism is mounted on the shaft and is used to adjust the pressure between the friction plate and the inner ring structure.

[0012] In one embodiment of the present invention, the preload adjustment mechanism includes a base and a force adjustment nut, the force adjustment nut being threadedly connected to the base and its end being connected to the friction plate.

[0013] In one embodiment of the present invention, the preload adjustment mechanism includes a base and a spring, the spring being sleeved on the shaft and located between the base and the spring, and the base being movable along the axial direction of the shaft to move closer to or further away from the friction plate.

[0014] In one embodiment of the present invention, the preload adjustment mechanism includes a base, a force adjustment nut, and a spring. The adjustment nut is threadedly connected to the base, and the spring is sleeved on the shaft and located between the adjustment nut and the friction plate.

[0015] In one embodiment of this utility model, the preload adjustment mechanism, the friction plate, the friction assembly, and the linkage assembly are detachably connected to the shaft.

[0016] In one embodiment of this utility model, the contact surfaces of the friction pad and / or the inner ring structure are formed with an anti-slip structure.

[0017] In one embodiment of this utility model, the linkage component includes a turntable and levers disposed at opposite ends of the turntable, wherein the levers at both ends are rotatably connected to the outer ring structure and the electromagnet assembly, respectively.

[0018] This utility model also proposes a braking system for medical equipment, comprising: a bed panel, an electromagnet assembly, and a buffer device as described in any of the above embodiments;

[0019] The electromagnet assembly is used to move along a first direction to attract the bed panel and fix the position of the bed panel;

[0020] The axis of the buffer device is perpendicular to the first direction, and the buffer device is used to buffer when the electromagnet attracts the bed panel.

[0021] In one embodiment of this utility model, the electromagnet assembly includes an electromagnet base, an electromagnet, and a return spring. The electromagnet is mounted on the electromagnet base. One end of the return spring is fixed, and the other end is connected to the electromagnet. When the electromagnet is de-energized, the return spring's elastic force causes the electromagnet to move in a direction opposite to the first direction to achieve reset.

[0022] The buffer device and braking system for medical equipment proposed in this utility model have the following beneficial effects:

[0023] This invention slows down the electromagnet's attraction speed by using the friction resistance of the friction plate, significantly reducing attraction noise and improving patient comfort, especially when used in medical equipment, thus minimizing interference with the patient.

[0024] This invention adopts a purely mechanical structure, eliminating the need for complex electrical control equipment, thereby reducing manufacturing and maintenance costs, improving the economy of the equipment, and simplifying the overall design, reducing the number and complexity of parts.

[0025] The stability of the mechanical structure in this invention ensures the long-term reliability of the equipment, reduces potential problems caused by electronic component failures, and improves the overall reliability of the equipment.

[0026] In this invention, each component is detachably connected, which facilitates installation, disassembly and maintenance. Its preload adjustment mechanism allows users to adjust the friction force as needed to adapt to different working conditions.

[0027] In summary, the buffer device and braking system for medical equipment proposed in this utility model have significant advantages in medical equipment, especially in application scenarios that require low noise and high reliability. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is an isometric view of the buffer device in one embodiment of the present invention.

[0030] Figure 2 This is a side view of the buffer device in one embodiment of the present invention.

[0031] Figure 3 This is a top view of the buffer device in one embodiment of the present invention.

[0032] Figure 4 This is a cross-sectional schematic diagram of the buffer device in one embodiment of the present invention.

[0033] Figure 5 This is a schematic diagram of a medical device in one embodiment of the present invention.

[0034] Label Explanation:

[0035] 100. Buffer device; 101. Buffer base plate; 102. Shaft; 200. Friction assembly; 300. Friction plate; 400. Linkage assembly; 201. Inner ring structure; 202. Outer ring structure; 401. Turntable; 402. Lever; 500. Motion assembly; 600. Preload adjustment mechanism; 601. Base; 602. Force adjustment nut; 603. Spring; 501. Electromagnet base; 502. Electromagnet; 503. Return spring; 700. Bed panel; 800. Frame. Detailed Implementation

[0036] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0037] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0038] like Figures 1 to 5 As shown, this utility model proposes a buffer device and braking system for medical equipment. It reduces noise by slowing the speed of the moving component 500, and simultaneously achieves rapid reset using a unidirectional rotation mechanism, solving the problems of complex structure and high cost in existing technologies. In this embodiment, the buffer device 100 includes a buffer base plate 101, a shaft 102, a friction component 200, a friction plate 300, and a linkage component 400.

[0039] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the buffer substrate 101 is the basic structure of the entire device, for example, made of high-strength aluminum alloy, and is bolted to the frame of medical equipment (such as an X-ray gastrointestinal machine). The choice of aluminum alloy not only ensures the mechanical strength of the substrate but also significantly reduces the weight of the entire device, facilitating installation and maintenance. The surface of the substrate undergoes precision machining to ensure its flatness and dimensional accuracy, providing a reliable reference surface for the installation of subsequent components.

[0040] Understandably, in practical applications, the buffer base plate 101 needs to withstand dynamic loads from the moving component 500 and other components; therefore, its structural design must possess sufficient rigidity and stability. The edges of the buffer base plate 101 are rounded to reduce stress concentration and extend its service life. Furthermore, the buffer base plate 101 has multiple mounting holes for secure connection to the frame of the medical device, ensuring that the device does not shift or loosen during operation.

[0041] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the shaft 102 is mounted on the buffer base plate 101 for mounting structures such as the friction assembly 200, friction plate 300, and linkage assembly 400. It can be made of stainless steel, which improves the corrosion resistance of the shaft 102 and enhances its mechanical strength, enabling it to adapt to various conditions in the medical device operating environment.

[0042] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the friction assembly 200 is sleeved on the shaft 102 and includes a concentrically arranged inner ring structure 201 and an outer ring structure 202. The outer ring structure 202 can rotate unidirectionally relative to the inner ring structure 201, for example, clockwise or counterclockwise, with the specific direction set according to actual needs. It can be designed as a one-way bearing, such as a wedge roller one-way bearing, a slanted roller one-way bearing, or a needle roller one-way bearing. Taking a wedge roller one-way bearing as an example: its working principle is based on the one-way locking mechanism of the wedge rollers. When the outer ring structure 202 rotates in a certain direction, the rollers are wedge-locked, and the outer ring is locked to the inner ring; while when the outer ring rotates in the opposite direction, the rollers are released, and the outer ring can rotate freely. This design allows the friction assembly 200 to provide stable damping force during the engagement phase and quickly release the lock during the reset phase, achieving a rapid response.

[0043] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the friction plate 300 is a key component for generating buffer damping. It is made of a high-friction coefficient material (such as a ceramic composite material), sleeved on the shaft 102, and in contact with the axial end face of the inner ring structure 201. The ceramic composite material is chosen based on its excellent friction performance and wear resistance. During long-term use, the friction plate 300 can maintain a stable coefficient of friction, reducing the decrease in buffering effect caused by wear.

[0044] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the contact surfaces of the friction plate 300 and / or the inner ring structure 201 are formed with an anti-slip structure, such as an anti-slip serration, to enhance frictional resistance. The anti-slip serration design further improves the contact stability between the friction plate 300 and the inner ring structure 201, ensuring sufficient damping force is generated during the attraction process, effectively reducing the attraction speed of the electromagnet and reducing attraction noise. Of course, the contact surfaces of the friction plate 300 and the inner ring structure 201 can adopt a wavy or grid-like anti-slip structure to further improve frictional stability. The wavy design increases the coefficient of friction between the friction plate 300 and the inner ring structure 201 by increasing the microscopic unevenness of the contact surface, while effectively dispersing frictional force and reducing local wear. The grid-like design, through the intersecting groove structure, forms multiple independent friction areas, further enhancing the stability and wear resistance of the friction plate 300.

[0045] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the linkage component 400 is a key component connecting the motion component 500 and the friction component 200, including a turntable 401 and levers 402 disposed at opposite ends of the turntable 401. The turntable 401 is mounted on the shaft 102, and the levers 402 at both ends are rotatably connected to the outer ring structure 202 and the motion component 500, respectively.

[0046] This structural design enables the linkage component 400 to effectively transmit the motion of the motion component 500 to the friction component 200, thereby controlling the electromagnet's engagement and reset process. Furthermore, the levers 402 at opposite ends of the turntable 401 are arranged symmetrically about the center of the turntable 401. This symmetrical arrangement of the levers 402 ensures the balance and reliability of motion transmission. The length and position of the levers 402 are precisely calculated to ensure that the outer ring structure 202 can be accurately rotated when the motion component 500 moves.

[0047] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, when the motion component 500 moves in the first direction, the linkage component 400 drives the outer ring structure 202 and the inner ring structure 201 to rotate synchronously, and the friction plate 300 forms a buffer damping on the frictional resistance of the inner ring structure 201; when the motion component 500 moves in the opposite direction to the first direction, the linkage component 400 drives the outer ring structure 202 to rotate freely around the inner ring structure 201 to achieve rapid reset.

[0048] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the buffer device 100 further includes a preload adjustment mechanism 600, which is mounted on the shaft 102 and is used to adjust the pressure between the friction plate 300 and the inner ring structure 201, thereby adjusting the friction force between the friction plate 300 and the inner ring structure 201.

[0049] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the preload adjustment mechanism 600 includes a base 601, a force adjustment nut 602, and a spring 603. The force adjustment nut 602 is threadedly connected to the base 601. The spring 603 is sleeved on the shaft 102 and located between the force adjustment nut 602 and the friction plate 300. By turning the force adjustment nut 602, the elastic force of the spring 603 is adjusted, thereby adjusting the pressure on the friction plate 300 and adjusting the friction force between the friction plate 300 and the inner ring structure 201.

[0050] In some other embodiments, the spring 603 can be removed, the force adjusting nut 602 is threaded to the base 601, and its end is connected to the friction plate 300. The force adjusting nut 602 can push the friction plate 300 to move axially, thereby adjusting the clamping force between it and the inner ring structure 201, and thus controlling the magnitude of the buffer damping.

[0051] In some other embodiments, the force adjustment nut 602 can be removed, and the spring 603 is sleeved on the shaft 102 and located between the base 601 and the spring 603. The base 601 can move axially along the shaft 102 to approach or move away from the friction plate 300, thereby adjusting the pressure on the friction plate 300 and adjusting the friction between the friction plate 300 and the inner ring structure 201.

[0052] The preload adjustment mechanism 600 provides users with flexible adjustment capabilities, enabling the buffer device 100 to precisely adjust the damping force according to different usage scenarios and requirements. The thread precision of the force adjustment nut 602 has undergone rigorous testing to ensure smooth transmission of axial force during adjustment, preventing damage to the device due to improper adjustment.

[0053] For example, the spring 603 can be designed as a disc spring. The elastic characteristics of the spring 603 make the adjustment of the preload more flexible and stable, and can quickly respond to different working conditions, further improving the performance and reliability of the buffer device 100. The stiffness and free length of the spring 603 are precisely calculated to ensure that a stable preload can be provided during the adjustment process, while avoiding performance degradation due to excessive deformation of the spring 603.

[0054] Furthermore, the force adjusting nut 602 or base 601 of the preload adjusting mechanism 600 can be provided with scale markings to facilitate precise adjustment of the damping force. The scale markings allow users to intuitively understand the current adjustment position when adjusting the preload, thereby achieving precise control of the damping force.

[0055] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the preload adjustment mechanism 600 and / or friction plate 300 and / or friction assembly 200 and / or linkage assembly 400 are detachably connected to the shaft 102 to facilitate installation, disassembly and maintenance.

[0056] Please see Figures 1 to 5 As shown, in this embodiment, the buffer device 100 is integrated into the medical device braking system, including a bed panel 700, an electromagnet assembly, and the buffer device 100 as described in the above embodiments. The electromagnet assembly is the motion component 500 in the above embodiments. The bed panel 700 is slidably mounted on the frame 800 of the medical device via a guide rail. The electromagnet assembly is used to move along a first direction to attract the bed panel 700 and fix the position of the bed panel 700. The axis of the buffer device 100 is perpendicular to the first direction, and the buffer device 100 is used to buffer when the electromagnet assembly attracts the bed panel 700.

[0057] Please see Figures 1 to 5 As shown, in this embodiment, the electromagnet assembly includes an electromagnet base 501, an electromagnet 502, and a return spring 503. The electromagnet 502 is mounted on the electromagnet base 501. One end of the return spring 503 is fixed, for example, to the equipment frame 800, and the other end is connected to the electromagnet 502. When the electromagnet is de-energized, the return spring 503 causes the electromagnet 502 to move in the opposite direction to the first direction to achieve reset. When the electromagnet 502 is energized, it attracts the bed panel 700 and triggers the buffer device 100 to work; when the power is off, the return spring 503 causes the electromagnet 502 to quickly reset, and the bed panel 700 resumes free movement.

[0058] This integrated application combines the buffer device 100 with the braking system of the medical equipment, achieving precise control and effective cushioning of the bed panel 700, thus improving the overall performance and safety of the medical equipment. Through the buffer device 100, the impact and noise during the engagement and resetting of the electromagnet 502 are reduced, providing patients with a more comfortable and quiet medical environment.

[0059] It is understandable that multiple sets of the electromagnet assembly can be installed on the frame 800. The multiple sets of electromagnet assembly are located on both sides or multiple sides of the bed panel 700. The buffer device 100 is arranged at both ends of each set of electromagnet assembly to ensure its buffering effect, effectively reduce the attraction speed during the attraction process of electromagnet 502, thereby reducing the noise generated at the moment of attraction.

[0060] Please see Figures 1 to 5 As shown, the working process of the buffer device 100 includes a suction buffer stage and a rapid reset stage. The suction buffer stage is as follows: When the electromagnet assembly is energized and attracts the bed panel 700, the electromagnet 502 moves in the first direction (such as moving upward to attract the bed panel 700). The linkage assembly 400 drives the friction assembly 200. The friction assembly 200 has an inner and outer ring design. At this time, the outer ring structure 202 and the inner ring structure 201 rotate synchronously. The frictional resistance between the friction plate 300 and the inner ring structure 201 forms damping, slowing down the moving speed of the electromagnet 502 and reducing the suction noise.

[0061] This process effectively solves the problem of high noise during the engagement of the electromagnet 502 in the existing technology, improving the comfort and quietness of the medical device during use and reducing interference to patients. The friction force between the friction plate 300 and the inner ring structure 201 is precisely controlled by the preload adjustment mechanism 600 to ensure a stable buffering effect under different operating conditions.

[0062] Please see Figures 1 to 5 As shown, the rapid reset phase is as follows: When the electromagnet 502 is de-energized, the reset spring 503 pulls the electromagnet 502 to move in the opposite direction, and the linkage component 400 rotates in the opposite direction. At this time, the inner and outer rings of the friction component 200 are unlocked, the outer ring structure 202 can rotate freely around the inner ring structure 201, the frictional resistance disappears, and the electromagnet 502 is rapidly reset under the action of the reset spring 503.

[0063] This rapid reset mechanism ensures that electromagnet 502 can return to its initial position in a short time, improving the operating efficiency of medical equipment, reducing equipment waiting time, and avoiding equipment failure and safety hazards caused by slow reset. The elastic force of the reset spring 503 is precisely calculated to ensure that the electromagnet 502 can be quickly pulled back to its original position when power is cut off, without causing excessive impact on other components.

[0064] This invention proposes a buffer device and braking system for medical equipment. By utilizing the frictional resistance between the friction plate 300 and the inner ring structure 201, this invention significantly reduces the engagement speed of the electromagnet 502 during engagement, thereby reducing noise generated at the moment of engagement. In medical equipment, this low-noise design effectively improves the patient's medical experience and reduces discomfort caused by noise. Especially in medical settings requiring prolonged operation, the low-noise buffering effect can significantly improve the work efficiency of medical staff and the comfort of patients.

[0065] This invention proposes a buffer device and braking system for medical equipment. The design of the friction component 200 allows the outer ring structure 202 to rotate freely around the inner ring structure 201 during the reset phase, thereby eliminating frictional resistance. This design ensures that the electromagnet 502 can quickly reset after power failure, reducing equipment waiting time and improving the overall operating efficiency of the medical equipment. The rapid reset capability also avoids equipment malfunctions and safety hazards caused by slow reset, ensuring the reliability and safety of the medical equipment.

[0066] This invention proposes a buffer device and braking system for medical equipment. It employs a purely mechanical structure design, eliminating the need for complex electronic control equipment, thus reducing manufacturing and maintenance costs. It also simplifies the overall design, reducing the number and complexity of components. The stability of the mechanical structure ensures the reliability of the equipment during long-term use, reducing potential problems caused by electronic component failures. Particularly in medical equipment, this high-reliability design can significantly extend the equipment's lifespan and reduce maintenance costs.

[0067] This utility model proposes a buffer device and braking system for medical equipment. The design of the preload adjustment mechanism 600 provides users with flexible adjustment functions, enabling the buffer device 100 to precisely adjust the damping force according to different usage scenarios and needs. Through the force adjustment nut 602 or the compression spring 603, users can easily adjust the clamping force between the friction plate 300 and the inner ring structure 201, thereby controlling the magnitude of the buffer damping. This flexible adjustment capability allows the buffer device 100 to adapt to different working conditions, improving the applicability and practicality of the equipment.

[0068] This utility model proposes a buffer device and braking system for medical equipment. The components are detachably connected, which facilitates installation, disassembly and maintenance. Its preload adjustment mechanism 600 allows users to adjust the friction force as needed to adapt to different working conditions.

[0069] In summary, through the aforementioned structure and optimized design, this invention achieves low-noise buffering during the electromagnet engagement process in medical equipment. Simultaneously, the cooperation of the one-way bearing and the linkage component 400 ensures rapid response during the reset phase. The preload adjustment mechanism 600 further enhances the adaptability and maintainability of the device, meeting the needs of different operating conditions.

[0070] It should be understood that the references to "an embodiment," "embodiment," or "specific embodiment" throughout this specification mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0071] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0072] The above description is only a preferred embodiment of this application and an explanation of the technical principles used. Those skilled in the art should understand that the scope involved in this application is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, technical solutions formed by replacing the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0073] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this utility model, the other technical features will not be described in detail here.

Claims

1. A cushioning device for a medical device, characterized by, include: Buffer substrate; A shaft, which is mounted on the buffer base plate; A friction assembly is sleeved on the shaft, and the friction assembly includes a concentric inner ring structure and an outer ring structure, wherein the outer ring structure can rotate unidirectionally relative to the inner ring structure. A friction plate, which is sleeved on the shaft and contacts the axial end face of the inner ring structure; A linkage component is mounted on the shaft and connected to the outer ring structure and the motion component, respectively. When the motion component moves in the first direction, the linkage component drives the outer ring structure and the inner ring structure to rotate synchronously, and the friction plate provides buffer damping against the frictional resistance of the inner ring structure; when the motion component moves in the opposite direction to the first direction, the linkage component drives the outer ring structure to rotate freely around the inner ring structure to achieve rapid reset.

2. The cushioning device for a medical device of claim 1, wherein, It also includes a preload adjustment mechanism, which is mounted on the shaft and is used to adjust the pressure between the friction plate and the inner ring structure.

3. The cushioning device for a medical device of claim 2, wherein, The preload adjustment mechanism includes a base and a force adjustment nut. The force adjustment nut is threadedly connected to the base, and its end is connected to the friction plate.

4. The cushioning device for a medical device of claim 2, wherein, The preload adjustment mechanism includes a base and a spring. The spring is sleeved on the shaft and located between the base and the spring. The base can move axially along the shaft to move closer to or further away from the friction plate.

5. The cushioning arrangement for a medical device of claim 2, wherein, The preload adjustment mechanism includes a base, a force adjustment nut, and a spring. The force adjustment nut is threadedly connected to the base, and the spring is sleeved on the shaft and located between the force adjustment nut and the friction plate.

6. The cushioning arrangement for a medical device of claim 2, wherein, The preload adjustment mechanism, the friction plate, the friction assembly, and the linkage assembly are detachably connected to the shaft.

7. The cushioning arrangement for a medical device of claim 1, wherein, The contact surfaces of the friction pad and / or the inner ring structure are provided with an anti-slip structure.

8. The cushioning arrangement for a medical device of claim 1, wherein, The linkage component includes a turntable and levers disposed at opposite ends of the turntable, with the levers at both ends being rotatably connected to the outer ring structure and the motion component, respectively.

9. A braking system for a medical device, characterized by, include: The bed panel, the electromagnet assembly, and the cushioning device as described in any one of claims 1 to 8; The electromagnet assembly is used to move along a first direction to attract the bed panel and fix the position of the bed panel; The axis of the buffer device is perpendicular to the first direction, and the buffer device is used to buffer when the electromagnet assembly adsorbs the bed panel.

10. The braking system for a medical device of claim 9, wherein, The electromagnet assembly includes an electromagnet base, an electromagnet, and a return spring. The electromagnet is mounted on the electromagnet base. One end of the return spring is fixed, and the other end is connected to the electromagnet. When the electromagnet is de-energized, the return spring's elastic force causes the electromagnet to move in the opposite direction to the first direction to achieve a reset.

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