Main bearing damping device of high-speed CT (Computed Tomography) machine

Abstract

The utility model belongs to the technical field of CT machine main bearing damping, and particularly relates to a high-speed CT machine main bearing damping device which comprises a limiting block. Connecting blocks are fixedly connected between the multiple limiting blocks. Inner rings of double-row angle bearings are fixedly connected to the side walls of the multiple connecting blocks. A connecting rod is slidably connected into the limiting block. The ends of the two connecting rods are fixedly connected with fixing blocks, and the other ends of the two connecting rods are fixedly connected with centrifugal blocks. A fixed convex block is fixedly connected to the side wall of the centrifugal block; clamping wheels are fixedly connected between the corresponding fixing protruding blocks, and the multiple clamping wheels are arranged corresponding to the size of the double-row angle bearing. According to the utility model, the plurality of clamping wheels are arranged to extrude the inner ring of the double-row angle bearing which rotates at a high speed, so that the inner ring and the outer ring of the double-row angle bearing are tightly attached, the vibration condition caused by a raceway structure error and a ball size error is further reduced, the negative influence of bearing vibration on CT imaging is favorably relieved, and the imaging quality of a CT machine is improved.

Description

Technical Field

[0001] This utility model belongs to the field of vibration reduction technology for CT machine main bearings, specifically a vibration reduction device for high-speed CT machine main bearings. Background Technology

[0002] The main bearing of a CT scanner is mainly used to transmit and bear the radial load and overturning moment generated by devices such as X-ray tubes, collimators, detectors, and slip rings. Since its operational stability directly affects the clarity of medical imaging, there are many factors that cause bearing vibration, including manufacturing errors and structural vibrations. Among them, the shape error of the inner and outer ring raceways and the size error of the bearing rollers can cause bearing vibration.

[0003] Existing vibration reduction methods for double-row angular contact ball slewing bearings mostly involve adding certain structures inside the bearing to compensate for the shape errors of the raceways of the inner and outer rings and to make up for the slight differences in the roller dimensions, so that the inner and outer rings of the bearing can maintain relative stability when the bearing is working at high speed. However, adding structures inside the bearing will inevitably affect the overall working performance of the bearing, and its vibration reduction effect is not easy to control.

[0004] Therefore, this utility model provides a vibration damping device for the main bearing of a high-speed CT scanner. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A vibration damping device for the main bearing of a high-speed CT machine, comprising a limiting block; a connecting block fixedly connected between multiple limiting blocks; an inner ring of a double-row angular bearing fixedly connected to the side wall of multiple connecting blocks; a connecting rod slidably connected inside the limiting block, and two connecting rods symmetrically arranged; a fixing block fixedly connected to the end of two connecting rods, and a centrifugal block fixedly connected to the other end of two connecting rods; a fixing protrusion fixedly connected to the side wall of the centrifugal block, and two fixing protrusions corresponding to the double-row angular bearing; clamping wheels fixedly connected between the corresponding fixing protrusions, and multiple clamping wheels corresponding to the size of the double-row angular bearing; this step, by setting multiple clamping wheels to squeeze the inner ring of the high-speed rotating double-row angular bearing, makes the inner and outer rings of the double-row angular bearing fit tightly, thereby reducing the vibration caused by raceway structure error and ball size error, which helps to alleviate the negative impact of bearing vibration on CT imaging and improve the imaging quality of the CT machine.

[0007] Preferably, a graphite sleeve is provided between the plurality of connecting rods and the limiting block, and two graphite sleeves are symmetrically arranged; the surface of the graphite sleeve is provided with graphite holes, and the plurality of graphite holes are correspondingly arranged; the interior of the graphite holes is filled with graphite blocks; this step, by setting the graphite sleeves and graphite blocks to lubricate the connecting rods, avoids the use of lubricating solvents, thereby preventing leakage of liquid solvents due to rotation, and by reducing the friction between structures, alleviates wear between structures, which is beneficial to extending the service life of the device.

[0008] Preferably, fixing plates are fixedly connected to the side walls of the multiple connecting blocks, and the multiple fixing plates are arranged in a circumferential array; the ends of the multiple fixing plates are fixedly connected to shielding blocks; this step, by setting the fixing plates and shielding blocks to block the multiple centrifugal blocks, helps to avoid collisions between the centrifugal blocks and other components of the CT machine, improves the stability of the main bearing vibration damping device of the high-speed CT machine, helps to maintain the imaging quality of CT imaging, and reduces safety hazards.

[0009] Preferably, a fixing rod is fixedly connected to the side wall of the connecting block, and multiple fixing rods are arranged in a circumferential array; a supporting rib is fixedly connected between the multiple fixing rods, and multiple supporting ribs are arranged in a linear array; a reinforcing rib is fixedly connected between the multiple supporting ribs, and multiple reinforcing ribs are arranged in a circumferential array. This step, by setting the supporting ribs and reinforcing ribs to be completely detached from the fixing rods, the connecting rods and the end components of the connecting rods, increases the safety of the device, reduces safety hazards, and helps protect the personal safety of medical staff and patients.

[0010] Preferably, a fixing plate is fixedly connected to the end of the graphite sleeve, and an installation groove is provided in the middle of the fixing plate. A screw is provided between the installation groove and the limiting block. This step realizes the replaceability of graphite sleeve and graphite block by setting the fixing plate and the installation groove, which provides convenience for maintenance personnel, helps to improve the efficiency of maintenance work, and shortens the maintenance time.

[0011] Preferably, a sealing block is fixed to the side wall of the shielding block, and two sealing blocks are correspondingly arranged; this step, by setting the sealing blocks to block graphite powder, facilitates the accumulation of graphite powder and provides convenience for maintenance personnel, reducing maintenance difficulty.

[0012] Preferably, the shielding block and the sealing block are made of ABS material; this step, by using ABS material for the shielding block and the sealing block, helps to improve the structural strength of the vibration damping device of the main bearing of the high-speed CT machine and reduce wear.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The high-speed CT machine main bearing vibration reduction device of this utility model uses multiple clamping wheels to squeeze the inner ring of the high-speed rotating double-row angular bearing, so that the inner and outer rings of the double-row angular bearing fit tightly together, thereby reducing the vibration caused by raceway structure error and ball size error, which helps to alleviate the negative impact of bearing vibration on CT imaging and improve the imaging quality of the CT machine.

[0015] 2. The vibration damping device for the main bearing of a high-speed CT scanner described in this utility model uses a graphite sleeve and a graphite block to lubricate the connecting rod, avoiding the use of lubricating solvents. This prevents leakage of liquid solvents due to rotation and reduces wear between structures by reducing friction, thus extending the service life of the device. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the present invention.

[0021] In the diagram: 1. Limiting block; 2. Double-row angular bearing; 3. Connecting block; 4. Fixing block; 5. Connecting rod; 6. Centrifugal block; 7. Fixing protrusion; 8. Clamping wheel; 9. Graphite sleeve; 10. Fixing disc; 11. Graphite hole; 12. Graphite block; 13. Fixing plate; 14. Blocking block; 15. Sealing block; 16. Supporting rib; 17. Reinforcing rib; 18. Fixing rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Specific implementation examples are given below.

[0024] like Figures 1 to 2As shown in the figure, a vibration damping device for the main bearing of a high-speed CT scanner according to an embodiment of the present invention includes a limiting block 1; connecting blocks 3 are fixedly connected between multiple limiting blocks 1; the inner ring of a double-row angular bearing 2 is fixedly connected to the side wall of multiple connecting blocks 3; connecting rods 5 are slidably connected inside the limiting block 1, and two connecting rods 5 are symmetrically arranged; fixing blocks 4 are fixedly connected to the ends of the two connecting rods 5, and centrifugal blocks 6 are fixedly connected to the other ends of the two connecting rods 5; fixing protrusions 7 are fixedly connected to the side wall of the centrifugal blocks 6, and two fixing protrusions 7 are arranged corresponding to the double-row angular bearing 2; clamping wheels 8 are fixedly connected between the corresponding fixing protrusions 7, and multiple clamping wheels 8 are arranged according to the size of the double-row angular bearing 2; during operation, the limiting blocks 1 fixed to the inner ring of the double-row angular bearing 2 by multiple connecting blocks 3 will rotate synchronously with the inner ring of the double-row angular bearing 2. Whenever the rotational speed of the double-row angular bearing 2, i.e., the rotational speed of the CT scanner, reaches a certain level, the multiple connecting blocks 3 will rotate synchronously with the inner ring of the double-row angular bearing 2. The centrifugal block 6 and fixing protrusion 7 at the end of the internal connecting rod 5 and limiting block 1 will be subjected to centrifugal force to press the inner ring of the double row angular bearing 2. After the inner ring of the double row angular bearing 2 is compressed, the internal balls of the double row angular bearing 2 will be compressed and produce slight deformation. Since the total weight of multiple limiting blocks 1, centrifugal blocks 6 and fixing protrusions 7 is the same and evenly distributed, the inner ring of the double row angular bearing 2 and the internal balls of the double row angular bearing 2 will be subjected to uniform stress, thereby reducing the vibration caused by the slight difference in ball size. The fixing block 4 serves to fix the adjacent connecting rod 5. This step uses multiple clamping wheels 8 to compress the inner ring of the high-speed rotating double row angular bearing 2, so that the inner and outer rings of the double row angular bearing fit tightly, thereby reducing the vibration caused by raceway structure error and ball size error. This helps to alleviate the negative impact of bearing vibration on CT imaging and improve the imaging quality of the CT machine.

[0025] like Figure 3 As shown, graphite sleeves 9 are provided between multiple connecting rods 5 and the limiting block 1, and two graphite sleeves 9 are symmetrically arranged; graphite holes 11 are opened on the surface of the graphite sleeves 9, and multiple graphite holes 11 are correspondingly arranged; the inside of the graphite holes 11 is filled with graphite blocks 12; during operation, whenever the connecting rod 5 slides inside the limiting block 1, the connecting rod 5 will contact the graphite sleeves 9 inside the limiting block 1. Through contact with the graphite sleeves 9, the connecting rod 5 will simultaneously contact the graphite blocks 12 inside the graphite holes 11. With the sliding of the connecting rod 5, the graphite blocks 12 are filled with graphite blocks 12. The contact portion between block 12 and connecting rod 5 will be evenly coated on the side wall of connecting rod 5 under the friction of connecting rod 5, thereby achieving a lubrication effect. By using the total weight of graphite blocks 12 inside graphite sleeve 9, the operator can make the total weight of multiple limit blocks 1 the same. This step, by setting graphite sleeve 9 and graphite blocks 12 to lubricate connecting rod 5, avoids the use of lubricating solvent, thereby preventing leakage of liquid solvent due to rotation. It also alleviates wear between structures by reducing friction between structures, which is beneficial to extending the service life of the device.

[0026] like Figure 4 As shown, fixing plates 13 are fixedly connected to the side walls of multiple connecting blocks 3, and the multiple fixing plates 13 are arranged in a circumferential array; blocking blocks 14 are fixedly connected to the ends of the multiple fixing plates 13; during operation, the blocking blocks 14 fixed to the ends of the multiple fixing plates 13 can collide with the other structures by placing the centrifugal blocks 6 on themselves. Whenever the CT machine starts working and the bearing starts to rotate, the blocking blocks 14 can block the centrifugal blocks 6 by themselves. This step, by setting the fixing plates 13 and blocking blocks 14 to block the multiple centrifugal blocks 6, helps to avoid the centrifugal blocks 6 from colliding with the other components of the CT machine, improves the stability of the main bearing vibration damping device of the high-speed CT machine, helps to maintain the imaging quality of CT imaging, and reduces safety hazards.

[0027] like Figure 3 As shown, fixing rods 18 are fixed to the side wall of connecting block 3, and multiple fixing rods 18 are arranged in a circumferential array; support ribs 16 are fixed between multiple fixing rods 18, and multiple support ribs 16 are arranged in a linear array; reinforcing ribs 17 are fixed between multiple support ribs 16, and multiple reinforcing ribs 17 are arranged in a circumferential array; during operation, the internal support assembly of multiple support ribs 16 and reinforcing ribs 17 is connected to the side wall of multiple connecting blocks 3 by multiple fixing rods 18. Whenever two connecting rods 5 separate from their end fixing blocks 4, the two... The connecting rod 5, along with its end centrifugal block 6, fixing protrusion 7, and clamping wheel 8, will detach from the limiting block 1. At this point, the support rib 16, reinforcing rib 17, and fixing rod 18 can completely detach themselves. In daily use, the support rib 16, reinforcing rib 17, and fixing rod 18 can provide support for the shielding block 14. This step, by setting the support rib 16, reinforcing rib 17, and fixing rod 18 to ensure the complete detachment of the connecting rod 5 and its end components, increases the safety of the device, reduces safety hazards, and helps protect the personal safety of medical staff and patients.

[0028] like Figure 3 As shown, a fixing plate 10 is fixed to the end of the graphite sleeve 9, and a mounting groove is provided in the middle of the fixing plate 10. A screw is provided between the mounting groove and the limiting block 1. During operation, the operator can periodically remove the screw between the fixing plate 10 and the limiting block 1 to separate the graphite sleeve 9, thereby making the graphite blocks 12 inside the multiple graphite holes 11 replaceable. Since the mounting groove on the top of the fixing plate 10 is set to correspond to the length of the screw, the side wall of the fixing block 4 can be in close contact with the end of the limiting block 1. This step realizes the replaceability of the graphite sleeve 9 and the graphite blocks 12 by setting the fixing plate 10 and the mounting groove, which provides convenience for maintenance personnel, helps to improve the efficiency of maintenance work, and shortens the maintenance time.

[0029] like Figure 3As shown, a sealing block 15 is fixedly connected to the side wall of the shielding block 14, and two sealing blocks 15 are correspondingly arranged. During operation, whenever graphite falls off the surfaces of multiple connecting rods 5, the sealing blocks 15 fixed to both ends of the shielding block 14 can block the graphite by themselves, preventing the graphite from spreading. This step, by setting the sealing blocks 15 to block graphite powder, is beneficial to the accumulation of graphite powder, providing convenience for maintenance personnel and reducing maintenance difficulty.

[0030] like Figure 3 As shown, the shielding block 14 and the sealing block 15 are made of ABS material. During operation, the shielding block 14 and the sealing block 15 made of ABS material can take advantage of their smooth surface, easy coloring, and high impact resistance. This step, by using ABS material for the shielding block 14 and the sealing block 15, helps to improve the structural strength of the vibration damping device of the main bearing of the high-speed CT machine and reduce wear.

[0031] During operation, the limiting blocks 1, which are fixed to the inner ring of the double-row angular bearing 2 via multiple connecting blocks 3, rotate synchronously with the inner ring of the double-row angular bearing 2. Whenever the rotational speed of the double-row angular bearing 2, i.e., the rotational speed of the CT scanner, reaches a certain level, the connecting rods 5, which are slidably connected inside the limiting blocks 1, and the centrifugal blocks 6 and fixed protrusions 7 at the ends of the limiting blocks 1, will be subjected to centrifugal force to pressurize the inner ring of the double-row angular bearing 2. After the inner ring of the double-row angular bearing 2 is compressed, the internal balls of the double-row angular bearing 2 will be compressed and slightly deformed. Since the total weight of the multiple limiting blocks 1, centrifugal blocks 6, and fixed protrusions 7 is the same and evenly distributed, the inner ring of the double-row angular bearing 2 and the interior of the double-row angular bearing 2 will be compressed. The balls will be subjected to uniform stress, thereby reducing vibration caused by slight differences in ball size. The fixing block 4 serves to fix adjacent connecting rods 5. Whenever the connecting rod 5 slides inside the limiting block 1, it will contact the graphite sleeve 9 inside the limiting block 1. Through this contact with the graphite sleeve 9, the connecting rod 5 will simultaneously contact the graphite block 12 inside the graphite hole 11. As the connecting rod 5 slides, the contact portion between the graphite block 12 and the connecting rod 5 will be evenly coated on the side wall of the connecting rod 5 under the friction of the connecting rod 5, thus achieving a lubrication effect. The total weight of the graphite blocks 12 inside the graphite sleeve 9 allows the operator to ensure that the total weight of multiple limiting blocks 1 is equalized. Similarly, the blocking blocks 14 fixed to the ends of multiple fixing plates 13 can collide with the other structures by placing the centrifugal blocks 6 on themselves. Whenever the CT machine starts working and the bearing starts rotating, the blocking blocks 14 can block the centrifugal blocks 6 by themselves. The internal support assembly composed of multiple supporting ribs 16 and reinforcing ribs 17 is connected to the side walls of multiple connecting blocks 3 by multiple fixing rods 18. Whenever two connecting rods 5 separate from the fixing blocks 4 at their ends, the two connecting rods 5, and their ends, centrifugal blocks 6, fixing protrusions 7, and clamping wheels 8 will detach from the limiting block 1. At this time, the supporting ribs 16, reinforcing ribs 17, and fixing rods 18 can completely detach by placing themselves. In daily use, the supporting ribs 16... The reinforcing rib 17 and the fixing rod 18 can provide support for the shielding block 14. The operator can periodically remove the screws between the fixing plate 10 and the limiting block 1 to separate the graphite sleeve 9, thereby making the graphite blocks 12 inside the multiple graphite holes 11 replaceable. Since the mounting groove on the top of the fixing plate 10 is set to correspond to the length of the screw, the side wall of the fixing block 4 can be in close contact with the end of the limiting block 1. Whenever the graphite on the surface of the multiple connecting rods 5 falls off, the sealing blocks 15 fixed to both ends of the shielding block 14 can block the graphite and prevent the graphite from spreading. The shielding block 14 and sealing block 15 made of ABS material can take advantage of their smooth surface, easy coloring, and high impact resistance.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-speed CT machine main bearing damping device, comprising a limiting block (1); characterized in that: A plurality of said limiting blocks (1) are fixedly connected with connecting blocks (3); the inner rings of double-row angular bearings (2) are fixedly connected on the side walls of a plurality of said connecting blocks (3); the connecting rods (5) are slidably connected inside said limiting blocks (1), and two said connecting rods (5) are symmetrically arranged; the fixed blocks (4) are fixedly connected on the end portions of two said connecting rods (5), and the centrifugal blocks (6) are fixedly connected on the other end portions of two said connecting rods (5); the fixed protrusions (7) are fixedly connected on the side walls of said centrifugal blocks (6), and two said fixed protrusions (7) are arranged corresponding to the double-row angular bearings (2); the clamping wheels (8) are fixedly connected between said fixed protrusions (7), and a plurality of said clamping wheels (8) are arranged corresponding to the sizes of the double-row angular bearings (2).

2. A vibration damping device for a main bearing of a high speed CT scanner according to claim 1, wherein: A plurality of graphite sleeves (9) are arranged between said connecting rods (5) and limiting blocks (1), and two said graphite sleeves (9) are symmetrically arranged; graphite holes (11) are formed on the surfaces of said graphite sleeves (9), and a plurality of said graphite holes (11) are correspondingly arranged; graphite blocks (12) are filled inside said graphite holes (11).

3. The high speed CT machine main bearing damping device of claim 1, wherein: Fixed sheets (13) are fixedly connected on the side walls of a plurality of said connecting blocks (3), and a plurality of said fixed sheets (13) are arranged in a circumferential array; end portions of a plurality of said fixed sheets (13) are fixedly connected with shielding blocks (14).

4. A high speed CT machine main bearing damping device according to claim 3, characterized in that: Fixed rods (18) are fixedly connected on the side walls of said connecting blocks (3), and a plurality of said fixed rods (18) are arranged in a circumferential array; support ribs (16) are fixedly connected between a plurality of said fixed rods (18), and a plurality of said support ribs (16) are arranged in a linear array; reinforcing ribs (17) are fixedly connected between a plurality of said support ribs (16), and a plurality of said reinforcing ribs (17) are arranged in a circumferential array.

5. The high speed CT machine main bearing damping device of claim 2, wherein: Fixed discs (10) are fixedly connected on the end portions of said graphite sleeves (9), and mounting grooves are formed in the middle portions of said fixed discs (10), and screws are arranged between said mounting grooves and limiting blocks (1).

6. A high speed CT machine main bearing damping device according to claim 3, characterized in that: Sealing blocks (15) are fixedly connected on the side walls of said shielding blocks (14), and two said sealing blocks (15) are correspondingly arranged.

7. A high speed CT machine main bearing damping device according to claim 6, characterized in that: Said shielding blocks (14) and sealing blocks (15) are made of ABS material.

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