Device and method for CT scanning bed plate capable of suppressing vibration

Abstract

The present application relates to the technical field of CT scanning bed boards. A device for a CT scanning bed board capable of suppressing vibration comprises a bed frame, a bed board and a boss, wherein the boss comprises two opposite side surfaces and a bottom surface; a fixed roller assembly connected to the bed frame and at least partially protruding from the top surface of the bed frame and fitting with the bottom surface; two eccentric roller assemblies connected to the bed frame and separately arranged on both sides of the boss, wherein the eccentric roller assembly is higher than the fixed roller assembly, the distance between the two eccentric roller assemblies is reduced, and downward pressure can be formed, when the bed board is supported by the fixed roller assembly along the length direction and moves to a position at a variable speed or a uniform speed, the bed board forms a vertical vibration, the eccentric roller assembly is rotated to reduce the distance between the two eccentric roller assemblies, so that the two eccentric roller assemblies are respectively pressed and fitted with the adjacent side surfaces, and under continuous rotation, downward pressure is formed on the bed board, fitting with the fixed roller assembly, and suppressing the vertical vibration of the bed board.

Description

Technical Field

[0001] The present application relates to the technical field of CT scanning bed plates, and in particular to a device and method for a CT scanning bed plate capable of suppressing vibration. Background Art

[0002] The current CT system requires the use of a scanning bed and a host. The patient lies on the bed board of the scanning bed, and the scanning bed sends the patient into the host hole to complete the scanning of the corresponding part. Since the principle of CT is tomography, it is to splice out layers of images. When scanning the head or a small area, if the bed board is still vibrating on the scanning plane when the scan starts, it is impossible to splice out an effective image, resulting in an inability to diagnose. The bed board of the current CT equipment on the market is connected to the transmission mechanism on the bed frame at the rear. The bed board with a large load demand needs to be supported by rollers at the front end of the horizontal bed frame to prevent the front end of the bed board from deforming and affecting the quality of the tomography image.

[0003] The horizontal movement of the scanning bed mostly adopts ball screw or belt drive. The mounting bracket of the bed board is connected to the transmission mechanism. Rollers are set at the front end of the horizontal bed frame to support the bed board. The surface of the fixed roller assembly is in line contact with the bottom surface of the bed board, which can only limit the freedom of the bed board to deform downward. When the scanning bed undergoes variable speed movements such as start and stop, acceleration and deceleration, the bed board is in a cantilever state and will vibrate up and down, affecting the quality of the scanned image and making it impossible to accurately diagnose the lesion area. Summary of the invention

[0004] The present application provides a device and method for a CT scanning bed capable of suppressing vibration, which is used to solve the problem that after the existing scanning bed is moved into place, vibration may occur, affecting the quality of the scanned image and causing the lesion area to be unable to be accurately diagnosed.

[0005] The first aspect of the present application provides a device for a CT scanning bed capable of suppressing vibration, comprising:

[0006] A bed frame, on which a bed board capable of sliding relative to the bed frame is arranged;

[0007] The bed board has a bottom with a boss arranged along the length direction thereof, and the boss includes two opposite side surfaces and a bottom surface;

[0008] A fixed roller assembly connected to the bed frame and at least partially protruding from the top surface of the bed frame and in contact with the bottom surface;

[0009] Two eccentric roller assemblies are respectively connected to the bed frame and are separately arranged on both sides of the boss. The eccentric roller assemblies are higher than the fixed roller assembly. After the two eccentric roller assemblies rotate a certain angle, they are affected by the eccentric structure, and the distance between the two eccentric roller assemblies is reduced, and downward pressure can be formed, so that the two eccentric roller assemblies can be squeezed and fitted with the adjacent side surfaces; wherein,

[0010] When the bed board is supported by the fixed roller assembly along the length direction and moves into position at a variable speed or at a constant speed, the bed board vibrates in the vertical direction, and the eccentric roller assembly is rotated to reduce the distance between the two eccentric roller assemblies, so that the two eccentric roller assemblies are respectively squeezed and fitted with the adjacent side surfaces, and under continuous rotation, downward pressure is formed on the bed board, which fits with the fixed roller assembly to suppress the vertical vibration of the bed board.

[0011] In some embodiments, the fixed roller assembly includes:

[0012] A first support member is provided on the bed frame and is located at an end away from a transmission mechanism connecting the bed frame and the bed board;

[0013] A fixed roller is connected to the first support member. Under the support of the first support member, the fixed roller at least partially protrudes from the top surface of the bed frame and fits with the bottom surface to limit the downward vibration of the bed board.

[0014] In some embodiments, the eccentric roller assembly includes:

[0015] A second support member, one end of which is connected to the bed frame;

[0016] An eccentric roller, one end of which is connected to an end of the second support member away from the bed frame;

[0017] The motor is arranged on the second supporting member and connected to the eccentric roller, and is used for driving the eccentric roller to rotate.

[0018] Some practicable methods further include a control system, which is connected to the motor; the control system sends an execution signal to the motor so that the motor responds to the execution signal and drives the eccentric roller to rotate.

[0019] In some practicable embodiments, the control system is used to respond to a status signal generated by the bed board stopping moving, and send an execution signal to the motor based on the status signal, so that the motor responds to the execution signal and drives the eccentric roller to rotate.

[0020] In some embodied methods, the two eccentric rollers are mirror-imaged and have an initial position. When the eccentric rollers are in the initial position, the eccentric rollers are spaced a set distance from the side so that the bed board can move on the fixed roller assembly.

[0021] In some embodiments, the circumferential wall of the eccentric roller is made of rubber material.

[0022] In some practicable embodiments, the bottom of the bed board and two opposite sides in the width direction are right-angled surfaces, the vertical surfaces of the right-angled surfaces are the side surfaces, and the bottom surface of the bed board is a plane.

[0023] In some practicable embodiments, the circumferential wall of the fixed roller is made of nylon, polytetrafluoroethylene or rubber material.

[0024] A second aspect of the present application provides a method for a CT scanning bed capable of suppressing vibration, which is applied to the aforementioned device for a CT scanning bed capable of suppressing vibration, and the method comprises:

[0025] A status signal is obtained according to the target position information of the bed board;

[0026] Applying downward pressure to one end of the bed board according to the state signal, wherein the one end of the bed board refers to the end away from the end where the bed board is connected to the transmission mechanism of the bed frame;

[0027] According to the downward force, the bed board is clamped to suppress the vertical vibration of the bed board.

[0028] Beneficial effects of this application:

[0029] A device and method for a CT scanning bed plate capable of suppressing vibration, wherein a bed frame is provided with a bed plate capable of sliding relative to the bed plate; the bed plate has a boss arranged along its length at the bottom, the boss comprising two opposite side surfaces and a bottom surface; a fixed roller assembly connected to the bed frame and at least partially protruding from the top surface of the bed frame and fitting with the bottom surface; two eccentric roller assemblies are respectively connected to the bed frame and separately arranged on both sides of the boss, the eccentric roller assembly is higher than the fixed roller assembly, and after the two eccentric roller assemblies rotate a certain angle, the two eccentric roller assemblies are affected by the eccentric structure. The distance between the roller assemblies is reduced, and downward pressure can be formed so that the two eccentric roller assemblies can be pressed and fitted with the adjacent side surfaces; wherein, when the bed board is supported by the fixed roller assembly along the length direction and is moved to a position at a variable speed or a uniform speed, the bed board forms a vertical vibration, and the eccentric roller assembly is rotated to reduce the distance between the two eccentric roller assemblies, so that the two eccentric roller assemblies are pressed and fitted with the adjacent side surfaces respectively, and under continuous rotation, downward pressure is formed on the bed board, which fits with the fixed roller assembly to suppress the vertical vibration of the bed board. Through the above structure, the relative vibration formed by the movement of the bed board is suppressed by the eccentric roller assembly and the fixed roller assembly, so that the vibration amplitude of the bed board at the scanning plane is reduced, the scanning quality is improved, and the patient comfort can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a schematic structural diagram of a device for a CT scanning bed capable of suppressing vibration in the present application;

[0032] Figure 2 This is a partial enlarged view of the structure of a device for suppressing vibration of a CT scanning bed in the present application;

[0033] Figure 3 This is a structural schematic diagram of a fixed roller assembly and an eccentric roller assembly of a device for a CT scanning bed plate capable of suppressing vibration according to the present application;

[0034] Figure 4 This is a front view of a bed plate of a CT scanning bed plate device capable of suppressing vibration according to the present application;

[0035] Figure 5This is a force analysis principle diagram of a device for a CT scanning bed plate capable of suppressing vibration according to the present application.

[0036] Description of reference numerals:

[0037] 1. Bed frame; 2. Bed board; 21. Boss; 3. Fixed roller assembly; 31. First support member; 32. Fixed roller; 4. Eccentric roller assembly; 41. Second support member; 42. Eccentric roller; 43. Motor; 5. Transmission mechanism. DETAILED DESCRIPTION

[0038] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, and it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] like Figures 1 to 5 As shown, the first aspect of the present application provides a device for a CT scanning bed plate capable of suppressing vibration, comprising a bed frame 1 , a bed plate 2 , a fixed roller assembly 3 and two eccentric roller assemblies 4 .

[0042] Among them, the bed frame 1 is provided with a bed board 2 that can slide relative to it, and the bed frame 1 and the bed board 2 are connected by a transmission mechanism 5. Exemplarily, the transmission mechanism 5 is a roller, that is, the bed frame 1 and the bed board 2 slide relative to each other through the roller.

[0043] The bottom of the bed board 2 has a boss 21 arranged along its length, and the boss 21 includes two opposite side surfaces and a bottom surface. That is, the top of the bed board 2 is an arc-shaped structure, and the bottom of the bed board 2 has right-angled surfaces on opposite sides along its width direction, and the vertical surfaces of the right-angled surfaces are side surfaces, and the horizontal and vertical surfaces of the right-angled surfaces form a space for accommodating two eccentric roller assemblies 4; the bottom surface of the bottom edge is a plane, so that it is convenient for the bottom surface to fit with the fixed roller assembly 3, and the fixed roller assembly 3 forms a support for the bed board 2.

[0044] The fixed roller assembly 3 is connected to the bed frame 1, and at least partially protrudes from the top surface of the bed frame 1 and fits with the bottom surface. Specifically, the fixed roller assembly 3 includes a first support member 31 and a fixed roller 32. The first support member 31 is arranged on the bed frame 1 and is located at an end of the transmission mechanism 5 that is away from the bed frame 1 and the bed board 2; the fixed roller 32 is connected to the first support member 31, and the fixed roller 32 is supported by the first support member 31, at least partially protrudes from the top surface of the bed frame 1 and fits with the bottom surface of the bed frame 1; the fixed roller 32 is located below the bed board to limit the downward vibration of the bed board 2.

[0045] It should be noted that the first support members 31 are separated on both sides of the fixed roller 32, and one end of the two first support members 31 is connected to the front end face of the bed frame 1 (for ease of understanding, the end of the bed frame 1 provided with the transmission mechanism 5 is the rear end and the other end is the front end), forming a fixation of the first support member 31, and the ends of the two first support members 31 away from the front end face of the bed frame 1 are respectively connected to the two ends of the fixed roller 32, forming a fixation of the fixed roller 32, so that when the bed board 2 is overlapped on the fixed roller 32, when the bed board 2 moves relative to the bed frame 1, the bed board 2 can roll on the fixed roller 32, that is, the fixed roller 32 can not only form a support for the bed board 2, but also can roll the bed board 2 relative to the fixed roller 32, and at the same time, limit the downward swing of the bed board 2. The rolling structure of the fixed roller 32 facilitates the relative adjustment of the position of the bed board 2 and the bed frame 1, so that the fixed roller 32 needs to at least partially protrude from the top surface of the bed frame 1.

[0046] In addition, the first support member 31 can also be configured as one as needed, so that one end of the first support member 31 is connected to the front end face of the bed frame 1, and the other end is connected to one side of the fixed roller 32, or the other end forms a forked structure and is respectively connected to the two ends of the fixed roller 32.

[0047] The shape of the first support member 31 can be adjusted as needed, and the present application does not limit this.

[0048] It should be noted that the material of the fixed roller 32 can be selected as needed. For example, the fixed roller 32 needs to be made of a material with small or no deformation. Therefore, the circumferential wall of the fixed roller 32 can be made of nylon, polytetrafluoroethylene or rubber. The fixed roller 32 needs to support the bed board 2.

[0049] Two eccentric roller assemblies 4 are respectively connected to the bed frame 1 and are separately arranged on both sides of the boss 21. The eccentric roller assembly 4 is higher than the fixed roller assembly 3. After the two eccentric roller assemblies 4 rotate at a certain angle, they are affected by the eccentric structure, and the distance between the two eccentric roller assemblies 4 is reduced, and downward pressure can be formed so that the two eccentric roller assemblies 4 can be squeezed and fitted with the adjacent side surfaces.

[0050] Specifically, the eccentric roller assembly 4 includes: a second support member 41, an eccentric roller 42 and a motor 43. One end of the second support member 41 is connected to the bed frame 1; one end of the eccentric roller 42 is connected to the end of the second support member 41 away from the bed frame 1; the motor 43 is arranged on the second support member 41 and connected to the eccentric roller 42, and is used to drive the eccentric roller 42 to rotate.

[0051] It should be noted that the two eccentric roller assemblies 4 have the same structure. The second support member 41 can be a sheet-like rectangular structure. One end of the second support member 41 is connected to the end face of the bed frame 1, and the other end protrudes from the top surface of the bed frame 1. The second support member 41 protruding from the top surface of the bed frame 1 is respectively connected to the eccentric roller 42 and the motor 43. Exemplarily, the second support member 41 protruding from the top surface of the bed frame 1 is connected to the eccentric roller 42 on one side, and connected to the motor 43 on the other side. The rotating shaft of the motor 43 passes through the second support member 41 and is connected to the eccentric roller 42. In this way, when the motor 43 is working, it can drive the eccentric roller 42 to rotate.

[0052] It should also be noted that when the two eccentric roller assemblies 4 are separately arranged on both sides of the fixed roller assembly 3, the two eccentric rollers 42 are mirror-imaged and have an initial position. When the eccentric rollers 42 are in the initial position, the eccentric rollers 42 are spaced apart from the side by a set distance, so that the bed board 2 can move on the fixed roller assembly 3. In other words, when the eccentric rollers 42 are not controlled by the motor 43, the eccentric rollers 42 are in the initial position. At this time, the eccentric rollers 42 are spaced apart from the side by a set distance. The distance is set as needed. When the distance exists, it is convenient for the bed board 2 to move in the length direction. When the motor 43 is in operation, it drives the eccentric rollers 42 to rotate. When the motor 43 rotates in contact with the bed board 2, the downward friction force applied causes the two eccentric rollers 42 to jointly produce a combined force effect of downward pressure on the bed board 2.

[0053] Furthermore, in order to increase the friction force, the circumferential wall of the eccentric roller 42 is made of rubber material, thereby increasing the friction force between the eccentric roller 42 and the side surface.

[0054] In one embodiment, a device for a CT scanning bed capable of suppressing vibration further includes a control system, which is connected to the motor 43; the control system sends an execution signal to the motor 43, so that the motor 43 responds to the execution signal and drives the eccentric roller 42 to rotate.

[0055] Furthermore, the control system is used to respond to a state signal formed by the bed board 2 stopping moving, and send an execution signal to the motor 43 according to the state signal, so that the motor 43 responds to the execution signal and drives the eccentric roller 42 to rotate.

[0056] It should be noted that before the CT scan, the doctor obtains the patient's height information and scanning position information, and then uses the control system to send instructions to the existing CT scanning equipment. The bed board 2 of the CT scanning equipment moves to the target position according to the instructions, and stops (at this time, the bed board 2 will form a vertical vibration due to the movement, and this vibration will affect the scanning accuracy), and forms a state signal, which is fed back to the control system. The control system sends a state signal and a corresponding action instruction to the motor 43 according to the received state signal. The motor 43 responds to the state signal and starts to move, controlling the eccentric roller 42 to rotate, thereby realizing the eccentric roller 42 to rotate to the side. Next, after contacting the side, it continues to rotate to form a downward pressure on the bed board 2, and cooperates with the fixed roller 32 to clamp and fix the bed board 2, thereby suppressing the vertical vibration of the bed board 2. This saves the time spent waiting for the bed board 2 to be still during CT scanning, and improves work efficiency.

[0057] In addition, in addition to the above method, the control system can also arrange a camera in the room where the CT scanning equipment is located. The camera can take pictures of the bed board 2 according to a preset time interval. When the bed board 2 responds to the command of the control system and starts to move, the command of the control system is synchronously sent to the camera, and the camera starts to take pictures of the bed board 2 to form a plurality of consecutive photos. The plurality of photos are transmitted to the control system, and the control system extracts features from the plurality of consecutive photos (the feature extraction method and the feature comparison method are both conventional methods, and the present application does not limit the feature extraction method) to obtain feature information of the bed board 2. In two consecutive photos, after comparing the feature information of the bed board 2, when it is obtained that the movement distance of the bed board 2 in the two adjacent photos is 0 or less than the preset movement distance, the control system obtains information that the bed board 2 stops moving. At this time, the control system sends an execution signal to the motor 43 (the model of the motor can be selected as needed, and the present application does not limit the model of the motor), and the motor 43 responds to the execution signal and starts to move.

[0058] In one embodiment, due to the different weight, height and CT scanning position of the patient, the moving distance of the bed board 2 and the time of up and down vibration will be different. Therefore, the patient's weight, height / scanning position and the moving distance of the bed board 2 (the moving distance of the bed board 2 can be obtained according to the different CT scanning positions) are used as parameters to obtain the vibration amplitude of the bed board 2 at the target position, and a corresponding relationship is formed. After obtaining the corresponding relationship, the rotation angle of the eccentric roller 42 driven by the motor 43 is obtained according to the corresponding relationship. In other words, after obtaining the corresponding relationship, the rotation angle of the motor 43 is determined according to the corresponding relationship. In this way, the clamping of the bed board 2 by the two eccentric rollers 42 can make the vibration of the bed board 2 decay quickly, reach the expected vibration amplitude, or stop the vibration. The corresponding relationship and the rotation angle of the motor 43 are input into the existing big data model as training data, and the big data model is used for training to obtain the trained big data model, that is, the target big data model.

[0059] It should be noted that after obtaining the target big data model, it is still necessary to verify it, that is, input the corresponding relationship into the target big data model, obtain the rotation angle of the motor 43, compare it with the actual rotation angle of the motor 43, and fine-tune the parameters of the target big data model to ensure the accuracy of the target big data model, that is, use the known corresponding relationship and the rotation angle of the motor 43 as test data to test the target data model.

[0060] After obtaining the target big data model, the doctor can input the patient's weight, height and scanning position parameters into the target big data model before performing a CT scan on the patient. The target big data model will output the rotation angle of the motor 43 according to the input parameters, so that when the control system sends an execution signal to the motor 43, it carries the rotation angle information of the motor 43. In this way, the motor 43 will execute the rotation angle according to the execution signal, so as to clamp the bed board 2 with appropriate force, thereby preventing the motor 43 from rotating at an angle that is too large or too small, which will result in the effect of reducing the vibration of the bed board 2 being not obvious, or the clamping force being too large, affecting the service life of the motor 43 and the wear of the eccentric roller 42.

[0061] A second aspect of the present application provides a method for a CT scanning bed capable of suppressing vibration, which is applied to the aforementioned device for a CT scanning bed capable of suppressing vibration, and the method comprises:

[0062] According to the target position information of the bed board 2, a state signal is obtained;

[0063] According to the state signal, a downward force is applied to one end of the bed board 2, wherein the one end of the bed board 2 is an end away from the end where the bed board 2 is connected to the transmission mechanism 5 of the bed frame 1;

[0064] According to the downward force, the bed board 2 is clamped to suppress the vertical vibration of the bed board 2.

[0065] A device for a CT scanning bed board capable of suppressing vibration, wherein a fixed roller 32 is fixedly mounted at the front end of a bed frame 1 through a first support member 31 and fits the lower surface of a bed board 2, so as to prevent the bed board 2 from being deformed excessively due to excessive load. An eccentric roller 42 is connected to a motor 43 driving the eccentric roller 42, and the two are mounted at the front end of the bed frame 1 through a bracket, and the eccentric rollers 42 are arranged on both sides of the bed board 2.

[0066] When the motor 43 drives the eccentric roller 42 to rotate, the eccentric roller 42 moves from a position where it is not in contact with the bed board 2 ( Figure 5 (in the middle, dotted line) turns to contact with both sides of the bed plate 2 ( Figure 5 The eccentric roller 42 exerts an external force on the bed board 2, which fits the fixed roller 32 and limits the upward vibration of the bed board 2.

[0067] Force analysis, Figure 5 In the figure, F2 and F3 are the normal forces generated by the inward extrusion of the eccentric roller 42, which cancel each other out, and F1 and F4 are the downward friction forces applied by the eccentric roller 42 when it rotates against the bed board 2, which together produce a combined force effect of downward pressure on the bed board 2. The eccentric roller 42 can be made of rubber or other materials to increase the downward pressure effect.

[0068] Working process: when the motor 43 works normally, it drives the eccentric roller 42 to be in zero position and has no contact with the bed board 2. When the bed board 2 stops moving, the control system sends an execution signal to the motor 43, and the motor 43 drives the eccentric roller 42 to rotate toward the inside of the bed board 2, so that the eccentric roller 42 contacts both sides of the raised vertical surface of the bed board 2, generating a downward force effect.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for a CT scanning bed capable of suppressing vibration, characterized in that: include: A bed frame, on which a bed board capable of sliding relative to the bed frame is arranged; The bed board has a bottom with a boss arranged along the length direction thereof, and the boss includes two opposite side surfaces and a bottom surface; A fixed roller assembly connected to the bed frame and at least partially protruding from the top surface of the bed frame and in contact with the bottom surface; Two eccentric roller assemblies are respectively connected to the bed frame and are separately arranged on both sides of the boss. The eccentric roller assemblies are higher than the fixed roller assembly. After the two eccentric roller assemblies rotate a certain angle, they are affected by the eccentric structure, and the distance between the two eccentric roller assemblies is reduced, and downward pressure can be formed, so that the two eccentric roller assemblies can be squeezed and fitted with the adjacent side surfaces; wherein, When the bed board is supported by the fixed roller assembly along the length direction and moves into position at a variable speed or at a constant speed, the bed board vibrates in the vertical direction, and the eccentric roller assembly is rotated to reduce the distance between the two eccentric roller assemblies, so that the two eccentric roller assemblies are respectively squeezed and fitted with the adjacent side surfaces, and under continuous rotation, downward pressure is formed on the bed board, which fits with the fixed roller assembly to suppress the vertical vibration of the bed board.

2. The device for a CT scanning bed capable of suppressing vibration according to claim 1, characterized in that: The fixed roller assembly comprises: A first support member is provided on the bed frame and is located at an end away from a transmission mechanism connecting the bed frame and the bed board; A fixed roller is connected to the first support member. Under the support of the first support member, the fixed roller at least partially protrudes from the top surface of the bed frame and fits with the bottom surface to limit the downward vibration of the bed board.

3. The device for a CT scanning bed capable of suppressing vibration according to claim 1, characterized in that: The eccentric roller assembly comprises: A second support member, one end of which is connected to the bed frame; An eccentric roller, one end of which is connected to an end of the second support member away from the bed frame; The motor is arranged on the second supporting member and connected to the eccentric roller, and is used for driving the eccentric roller to rotate.

4. The device for a CT scanning bed capable of suppressing vibration according to claim 3, characterized in that: The two eccentric rollers are mirror-imaged and have an initial position. When the eccentric rollers are in the initial position, the eccentric rollers are spaced a set distance from the side surfaces so that the bed board can move on the fixed roller assembly.

5. The device for a CT scanning bed capable of suppressing vibration according to claim 3, characterized in that: The circumferential wall of the eccentric roller is made of rubber material.

6. The device for a CT scanning bed capable of suppressing vibration according to claim 3, characterized in that: It also includes a control system, which is connected to the motor; the control system sends an execution signal to the motor, so that the motor responds to the execution signal and drives the eccentric roller to rotate.

7. The device for a CT scanning bed capable of suppressing vibration according to claim 6, characterized in that: The control system is used to respond to the state signal formed by the bed board stopping moving, and send an execution signal to the motor according to the state signal, so that the motor responds to the execution signal and drives the eccentric roller to rotate.

8. The device for a CT scanning bed capable of suppressing vibration according to claim 1, characterized in that: The bottom of the bed board and two opposite sides in the width direction are right-angled surfaces respectively, the vertical surfaces of the right-angled surfaces are the side surfaces, and the bottom surface of the bed board is a plane.

9. The device for a CT scanning bed capable of suppressing vibration according to claim 2, characterized in that: The circumferential wall of the fixed roller is made of nylon, polytetrafluoroethylene or rubber material.

10. A method for a CT scanning bed capable of suppressing vibration, characterized in that: The device for suppressing vibration of a CT scanning bed plate according to any one of claims 1 to 9, the method comprising: A status signal is obtained according to the target position information of the bed board; Applying downward pressure to one end of the bed board according to the state signal, wherein the one end of the bed board is an end away from the end where the bed board is connected to the transmission mechanism of the bed frame; According to the downward force, the bed board is clamped to suppress the vertical vibration of the bed board.

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