High-precision rotating bearing for medical imaging equipment
By incorporating limiting components and control devices into the high-precision rotating bearings of medical imaging equipment, the problem of misalignment between the inner and outer rings during high-speed rotation has been solved, thereby improving the stability and precision of the bearings and extending the service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CIXI BEARINGS IND CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-21
AI Technical Summary
When high-precision rotary bearings in existing medical imaging equipment rotate at high speeds, the inner and outer rings are prone to relative misalignment and unstable positioning, leading to vibration and wear, which affects the high-precision operation and service life of the equipment.
A high-precision rotary bearing comprising an inner ring, an outer ring, rollers, and auxiliary devices is designed. By setting a limiting element and a control component between the inner and outer rings, and by using the limiting element to insert into the limiting groove, offset and friction are reduced, thus ensuring stability.
It effectively suppresses radial offset and tilting of the bearing during high-speed rotation, improves the consistency of the rotation trajectory, reduces frictional resistance, and extends the service life and accuracy of the equipment.
Smart Images
Figure CN224533246U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical imaging equipment technology, and in particular to a high-precision rotating bearing for medical imaging equipment. Background Technology
[0002] High-precision rotary bearings in medical imaging equipment are core components that ensure the accurate operation of equipment such as CT and MRI. They must meet the requirements of high speed, low vibration, and long life. Bearings are core components in machinery used to reduce friction and support rotating or moving parts. According to the friction method, they can be divided into rolling bearings and sliding bearings. Rolling bearings consist of an inner ring, an outer ring, rolling elements (balls, rollers, etc.) and a cage. They reduce contact friction through rolling elements and are suitable for high-speed and high-precision scenarios, such as automobiles and machine tools. Sliding bearings have a simple structure, work by sliding friction, have strong load-bearing capacity, and are suitable for low-speed heavy loads, such as large mechanical spindles.
[0003] In daily work, it has been found that in the use of existing high-precision rotary bearings in medical imaging equipment, the inner and outer rings of the bearings often exhibit relative misalignment and unstable positioning when rotating at high speeds. This misalignment leads to an increase in the concentricity deviation of the rotating parts, causing high-frequency vibration and micro-shaking, which directly affects the high-precision operation of the equipment. Furthermore, long-term unstable operation may exacerbate bearing wear and shorten its service life. Utility Model Content
[0004] The purpose of this invention is to solve the problem of relative misalignment and unstable positioning that often occurs between the inner and outer rings of high-precision rotary bearings when they rotate at high speeds in the prior art, and to propose a high-precision rotary bearing for medical imaging equipment.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision rotating bearing for medical imaging equipment, comprising an inner bearing ring, an outer bearing ring, rollers, and auxiliary devices, wherein the outer bearing ring is disposed outside the inner bearing ring, the rollers are disposed between the inner and outer bearing rings, and multiple mounting holes are provided on the surfaces of both the outer and inner bearing rings.
[0006] The auxiliary device is disposed in the inner wall of the bearing inner ring. The auxiliary device includes multiple sets of sliding cavities formed in the inner wall of the bearing outer ring, with two sliding cavities in each set. The inner wall of each sliding cavity is slidably connected to a limiting member. Two limiting grooves are formed on the inner side of the bearing outer ring for the limiting member to be inserted. A spring is provided between the limiting member and the sliding cavity. Multiple sets of control components are provided on the inner wall of the bearing inner ring to control the movement of each set of limiting members. Through the above components, during use, the limiting members can be controlled to insert into the limiting grooves on the inner side of the bearing outer ring by the control components, thereby reducing the phenomenon of misalignment and instability of the bearing outer ring and bearing inner ring during high-speed rotation.
[0007] Preferably, the limiting component includes a limiting shaft, a large ball, and two small balls. The large ball is disposed on the inner wall of the upper end of the limiting shaft, and the two small balls are disposed in the inner wall of the outer surface of the limiting shaft. Through the above components, when the limiting component is inserted into the limiting groove, the large ball and the two small balls can contact the inner wall of the limiting groove. When the outer ring and the inner ring of the bearing rotate, the large ball and the small balls can reduce friction and ensure stability.
[0008] Preferably, the lower end of the limiting shaft is rounded.
[0009] Preferably, the control assembly includes two extrusion rings slidably connected to the inner wall of the bearing inner ring. A bidirectional screw is rotatably connected to the inner wall of the bearing inner ring. The bidirectional screw is threadedly connected to the inner walls of the two extrusion rings respectively. A control head is fixedly connected to one end of the bidirectional screw. A control groove is formed on the surface of the control head. When controlling the bearing, a suitable tool can be inserted into the control groove to drive the control head and the bidirectional screw to rotate. The bidirectional screw can drive the two extrusion rings to move and extrude the limiting member, causing the limiting member to move upward and insert into the limiting groove.
[0010] Preferably, the control slot is arranged in a regular hexagonal shape.
[0011] Preferably, the spring is sleeved on the limiting member, and the two ends of the spring are fixedly connected to the limiting member and the inner wall of the sliding cavity, respectively.
[0012] Preferably, the outer ring of the bearing has multiple sets of observation channels on its surface. These observation channels are connected to the inner wall of the limiting groove. Through these components, the movement status and position of the limiting component can be observed during operation.
[0013] Preferably, an observation window is fixedly connected to the inner wall of the observation channel. Through the above-mentioned components, the observation window can achieve the function of interception and protection.
[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0015] In this invention, by setting an auxiliary device and controlling the components, the movement of the limiting component can be controlled so that the limiting component is inserted into the limiting groove and engages with it. This effectively limits the relative displacement between the inner ring and the outer ring of the bearing, suppresses radial offset or tilting during high-speed rotation, and provides a mechanical basis for high-precision imaging of medical imaging equipment (such as CT and MRI).
[0016] In this invention, after the limiting member is inserted into the limiting groove, the rolling contact design between the large and small balls ensures the limiting effect while reducing frictional resistance, avoiding wear or jamming caused by rigid contact, and ensuring the consistency of the rotation trajectory. Attached Figure Description
[0017] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a high-precision rotating bearing for medical imaging equipment.
[0018] Figure 2 This utility model provides a partial structural schematic diagram of a high-precision rotating bearing for medical imaging equipment.
[0019] Figure 3 This utility model provides a cross-sectional structural schematic diagram of a high-precision rotating bearing for medical imaging equipment.
[0020] Figure 4 This utility model proposes a high-precision rotating bearing for medical imaging equipment. Figure 3 Schematic diagram of the structure at point A in the middle;
[0021] Figure 5 This utility model provides a structural schematic diagram of the control component of a high-precision rotating bearing for a medical imaging device.
[0022] Legend:
[0023] 1. Bearing inner ring; 2. Bearing outer ring; 3. Mounting hole; 4. Roller body; 5. Auxiliary device; 51. Control component; 511. Double-acting screw; 512. Control head; 513. Control groove; 514. Extrusion ring; 52. Limiting component; 521. Limiting shaft; 522. Small ball; 523. Large ball; 53. Spring; 54. Limiting groove; 55. Observation channel; 56. Observation window; 57. Slide cavity. Detailed Implementation
[0024] Please see Figures 1-5 This utility model provides a technical solution: a high-precision rotating bearing for medical imaging equipment, including an inner bearing ring 1, an outer bearing ring 2, a roller body 4, and an auxiliary device 5. The outer bearing ring 2 is disposed on the outside of the inner bearing ring 1, and the roller body 4 is disposed between the inner bearing ring 1 and the outer bearing ring 2. Multiple mounting holes 3 are provided on the surfaces of both the outer bearing ring 2 and the inner bearing ring 1.
[0025] Specifically, the auxiliary device 5 is installed in the inner wall of the inner ring 1 of the bearing. The auxiliary device 5 includes multiple sets of sliding cavities 57 opened in the inner wall of the outer ring 2 of the bearing. Each set of sliding cavities 57 has two components. The inner wall of the sliding cavity 57 is slidably connected to a limiting member 52. Two limiting grooves 54 are opened on the inner side of the outer ring 2 of the bearing. The limiting grooves 54 are for the limiting member 52 to be inserted. A spring 53 is provided between the limiting member 52 and the sliding cavity 57. The spring 53 is sleeved on the limiting member 52. The two ends of the spring 53 are fixedly connected to the limiting member 52 and the inner wall of the sliding cavity 57, respectively. Multiple sets of control components 51 are provided on the inner wall of the inner ring 1 of the bearing to control the movement of each set of limiting members 52.
[0026] In this implementation scheme: During use, the limiting member 52 can be controlled by the control component 51 to insert into the limiting groove 54 inside the outer ring 2 of the bearing, thereby reducing the phenomenon of misalignment and instability between the outer ring 2 and the inner ring 1 of the bearing during high-speed rotation.
[0027] Specifically, the limiting component 52 includes a limiting shaft 521, a large ball 523 and two small balls 522. The large ball 523 is disposed on the upper inner wall of the limiting shaft 521, and the two small balls 522 are disposed on the inner wall of the outer surface of the limiting shaft 521. The lower end of the limiting shaft 521 is rounded.
[0028] In this implementation scheme: when the limiting member 52 is inserted into the limiting groove 54, the large ball 523 and the two small balls 522 can contact the inner wall of the limiting groove 54. When the outer ring 2 and the inner ring 1 of the bearing rotate, the large ball 523 and the small balls 522 can reduce friction and ensure stability.
[0029] Specifically, the control component 51 includes two extrusion rings 514 that are slidably connected to the inner wall of the bearing inner ring 1. A bidirectional screw 511 is rotatably connected to the inner wall of the bearing inner ring 1. The bidirectional screw 511 is threadedly connected to the inner walls of the two extrusion rings 514 respectively. A control head 512 is fixedly connected to one end of the bidirectional screw 511. A control groove 513 is opened on the surface of the control head 512. The control groove 513 is arranged in a regular hexagon.
[0030] In this implementation scheme: When controlling, the appropriate tool can be inserted into the control slot 513 to drive the control head 512 and the bidirectional screw 511 to rotate. The bidirectional screw 511 can drive the two extrusion rings 514 to move and extrude the limiting member 52, causing the limiting member 52 to move upward and be inserted into the limiting slot 54.
[0031] Specifically, the outer ring 2 of the bearing has multiple sets of observation channels 55 on its surface. The observation channels 55 are connected to the inner wall of the limiting groove 54, and the inner wall of the observation channel 55 is fixedly connected to an observation window 56.
[0032] In this implementation plan: During operation, the movement status and position of the limiting member 52 can be observed through the observation channel 55, and the observation window 56 can achieve the function of interception and protection.
[0033] Working principle: During use, the tool that fits the regular hexagonal control groove 513 can be inserted into the control groove 513. Then, the tool is rotated, which drives the control head 512 and the bidirectional screw 511 to rotate. The bidirectional screw 511 controls the two extrusion rings 514 to move, thereby extruding the limiting member 52 and causing the limiting member 52 to move upward. The spring 53 is stressed and inserts into the limiting groove 54. After the limiting member 52 is inserted, the large ball 523 and the small ball 522 on the limiting shaft 521 contact the inner wall of the limiting groove 54, thus achieving the limiting. During the high-speed rotation of the outer ring 2 and the inner ring 1 of the bearing, the large ball 523 and the small ball 522 can move within the inner wall of the limiting groove 54 to ensure stability and improve the accuracy of the medical equipment. At the same time, during the adjustment process, the movement status and position of the limiting member 52 can be observed through the observation channel 55, and the observation window 56 can achieve the interception and protection function.
Claims
1. A high-precision rotating bearing for medical imaging equipment, comprising an inner bearing ring (1), an outer bearing ring (2), rollers (4), and auxiliary devices (5), characterized in that: The outer ring (2) of the bearing is located outside the inner ring (1) of the bearing, and the roller body (4) is located between the inner ring (1) and the outer ring (2) of the bearing. Multiple mounting holes (3) are provided on the surfaces of the outer ring (2) and the inner ring (1). The auxiliary device (5) is disposed in the inner wall of the bearing inner ring (1). The auxiliary device (5) includes multiple sets of sliding cavities (57) opened in the inner wall of the bearing outer ring (2). Each set of sliding cavities (57) has two components. The inner wall of the sliding cavity (57) is slidably connected to a limiting member (52). Two limiting grooves (54) are opened on the inner side of the bearing outer ring (2). The limiting grooves (54) are for the limiting member (52) to be inserted. A spring (53) is provided between the limiting member (52) and the sliding cavity (57). Multiple sets of control components (51) are provided on the inner wall of the bearing inner ring (1) for controlling the movement of each set of limiting members (52).
2. The high-precision rotary bearing for medical imaging equipment according to claim 1, characterized in that: The limiting member (52) includes a limiting shaft (521), a large ball (523) and two small balls (522). The large ball (523) is disposed on the inner wall of the upper end of the limiting shaft (521), and the two small balls (522) are disposed in the inner wall of the outer surface of the limiting shaft (521).
3. The high-precision rotary bearing for medical imaging equipment according to claim 2, characterized in that: The lower end of the limiting shaft (521) is rounded.
4. The high-precision rotating bearing for medical imaging equipment according to claim 3, characterized in that: The control component (51) includes two extrusion rings (514) that are slidably connected to the inner wall of the bearing inner ring (1). A bidirectional screw (511) is rotatably connected to the inner wall of the bearing inner ring (1). The bidirectional screw (511) is threadedly connected to the inner walls of the two extrusion rings (514) respectively. A control head (512) is fixedly connected to one end of the bidirectional screw (511). A control groove (513) is provided on the surface of the control head (512).
5. A high-precision rotating bearing for medical imaging equipment according to claim 4, characterized in that: The control slot (513) is arranged in a regular hexagonal shape.
6. A high-precision rotary bearing for medical imaging equipment according to claim 1, characterized in that: The spring (53) is sleeved on the limiting member (52), and the two ends of the spring (53) are fixedly connected to the inner wall of the limiting member (52) and the sliding cavity (57), respectively.
7. A high-precision rotating bearing for medical imaging equipment according to claim 1, characterized in that: The outer ring (2) of the bearing has multiple sets of observation channels (55) on its surface, and the observation channels (55) are connected to the inner wall of the limiting groove (54).
8. A high-precision rotary bearing for medical imaging equipment according to claim 7, characterized in that: An observation window (56) is fixedly connected to the inner wall of the observation channel (55).