High-speed direct-drive medical CT machine bearing

Abstract

The invention discloses a high-speed direct-drive medical CT machine bearing, and particularly relates to the technical field of bearings, the high-speed direct-drive medical CT machine bearing comprises a bearing inner ring, a bearing outer ring is mounted on the outer side of the bearing inner ring, a bottom outer ring is mounted at the bottom of the bearing outer ring, and a sealing gap is formed among the bearing inner ring, the bearing outer ring and the bottom outer ring; and a double-row ball rotating mechanism is arranged between the bearing inner ring and the bearing outer ring. The double-row ball rotating mechanism and the lubricating mechanism are arranged, lubricating oil is stored and slowly released, the lubricating effect of the bearing in the long-time operation process is guaranteed, larger radial and axial force is borne through double rows of balls, bearing deformation or damage caused by overload is avoided, it is guaranteed that a CT machine can normally work under the heavy-load working condition, and the service life of the CT machine is prolonged. The X-ray scanning frame is simple in structure and convenient to operate, can better adapt to complex working condition changes, reduces radial run-out and axial play of the scanning frame, enables a detector and an X-ray tube to keep high-precision alignment in the rotating process, and accordingly generates clearer and more accurate medical images.

Description

Technical Field

[0001] The present invention relates to the technical field of bearings, and more specifically, to a high-speed direct-drive medical CT machine bearing. Background Art

[0002] In the medical field, high-speed direct-drive medical CT machines are an important diagnostic equipment, and the bearings of the CT machines are crucial to their performance and reliability. With the continuous development of medical technology, higher and higher requirements are placed on the imaging quality, scanning speed and stability of CT machines, which also places higher requirements on the bearings of CT machines.

[0003] Traditional medical CT machine bearings need to adapt to various working conditions such as temperature changes and vibration interference. When dealing with these complex situations, single-row ball bearings may have problems such as poor lubrication and impurity contamination, resulting in frequent bearing failures, increasing equipment maintenance costs and downtime, and affecting the working efficiency of the CT machine. At the same time, there are certain limitations when facing high-speed rotation and heavy-load conditions. The bearing's load-bearing capacity is relatively limited. When subjected to large radial and axial forces, the bearing is prone to deformation or damage, affecting the normal operation of the CT machine. The ball has poor stability during rotation, which may cause large radial runout and axial movement of the scanning frame, affecting the alignment accuracy of the detector and the X-ray tube, thereby reducing the imaging quality. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-speed direct-drive medical CT machine bearing to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a high-speed direct-drive medical CT machine bearing, comprising a bearing inner ring, a bearing outer ring is installed outside the bearing inner ring, a bottom outer ring is installed at the bottom of the bearing outer ring, a sealed gap is formed between the bearing inner ring, the bearing outer ring and the bottom outer ring, and a double-row ball rotation mechanism is arranged between the bearing inner ring and the bearing outer ring; The double-row ball rotation mechanism includes a bearing clearance, which is provided on the surface of the inner ring of the bearing and one side of the outer ring of the bearing. A retaining frame is installed inside the bearing clearance, and the retaining frame is fixedly connected to the inner ring of the bearing. Bearing balls are installed on one side of the retaining frame, and a reinforcement ring is fixedly connected to the other side of the retaining frame. A raceway plate is provided on one side of the bearing balls, and a sealing plate is fixedly connected to one side of the raceway plate. A lubrication mechanism is provided between the outer ring of the bearing and the raceway plate.

[0006] Preferably, the lubrication mechanism comprises an oil storage tank, the oil storage tank is opened inside the outer ring of the bearing, an oil supply hole is opened on one side surface of the inner wall of the oil storage tank, and the oil supply hole is arranged on one side surface of the outer ring of the bearing.

[0007] Preferably, a sealing piston is movably clamped inside the oil replenishing hole, a first oil hole is opened on one side surface of the inner wall of the oil storage tank, and an oil core is fixedly installed inside the first oil hole.

[0008] Preferably, a grease retainer is fixedly mounted on one side of the raceway plate, the grease retainer is located on the top of the bearing ball, and second oil holes are opened on the surfaces of one side of the sealing plate, the raceway plate and the grease retainer.

[0009] Preferably, the cross-sectional shape of the rolling plate is set to be L-shaped, and the number of the reinforcement ring and the number of the rolling plate are both set to two.

[0010] Preferably, an annular groove is provided inside the bottom outer ring, a stop ring is installed inside the annular groove, and the annular groove and the stop ring match each other.

[0011] Preferably, a raceway gap is formed between the retaining frame and the raceway plate.

[0012] Preferably, the bottom of the oil storage tank is inclined at an angle of 5° to 10°, and the lower end is close to the first oil hole.

[0013] Preferably, the sealing piston is made of oil-resistant rubber material.

[0014] Technical effects and advantages of the present invention: 1. By setting up a double-row ball rotation mechanism and a lubrication mechanism, the lubrication system consisting of an oil storage tank, an oil core and a grease retainer can provide continuous and stable lubrication for the bearing. The inclined design of the bottom of the oil storage tank and the capillary action of the oil core ensure that the lubricating oil can be smoothly transported to the parts that need lubrication. The grease retainer can store a certain amount of lubricating oil and release it slowly, ensuring the lubrication effect of the bearing during long-term operation. The sealing structure such as the sealing plate, the sealing gap and the sealing piston effectively prevents the leakage of lubricating oil and the entry of foreign impurities into the bearing, reducing bearing failures caused by poor lubrication and impurity contamination, and extending the maintenance cycle of the bearing. At the same time, the double-row ball structure can effectively share these loads. Compared with the single-row ball bearing, it can withstand greater radial and axial forces, which enables the bearing to stably support components such as the scanning frame, avoid deformation or damage of the bearing due to overload, and ensure CT The machine can also work normally under heavy load conditions, can provide more reliable support for the equipment, prevent serious safety accidents such as the scanner falling due to bearing failure, and ensure the safety of medical staff and patients. The double-row ball bearing is more stable during the rotation process. The two rows of balls work together to better keep the rotation center position of the shaft unchanged. With its good stability and load-bearing capacity, the double-row ball bearing can better adapt to these complex working conditions, help reduce the radial runout and axial movement of the scanner, and enable the detector and X-ray tube to maintain high-precision alignment during rotation, thereby generating clearer and more accurate medical images, providing a more reliable basis for the diagnosis of diseases, and can better cope with the centrifugal force and axial force generated by high-speed rotation, ensuring that the bearing remains stable during long-term high-speed and heavy-load operation, reducing the number of maintenance times, and improving the working efficiency of the CT machine; 2. The sealing gap between the inner ring, outer ring and bottom outer ring of the bearing provides space for the thermal expansion and contraction of the bearing due to temperature changes during operation, which enables the bearing to maintain stable performance at different operating temperatures, avoids problems such as bearing jamming or excessive wear caused by temperature changes, and improves the adaptability of the CT machine under various environmental conditions. The reinforcement ring enhances the structural strength of the cage, so that it can stably guide the rolling of the bearing balls during high-speed rotation. At the same time, the L-shaped design of the raceway plate and its close fit with the bearing balls, plus the buffering effect of the raceway gap, jointly ensure the stable operation of the bearing under various working conditions, reduce the wear and damage risks of the internal parts of the bearing, and increase the service life of the bearing, thereby enhancing the reliability of the entire CT machine equipment; 3. The annular groove and the retaining ring inside the bottom outer ring can limit the axial movement of the internal parts of the bearing and ensure the stability of the bearing during operation. This is especially important for high-speed direct-drive medical CT machines, because axial instability may cause the scanning frame to deviate, affect the imaging quality, and even damage the equipment. The existence of the retaining ring effectively prevents this from happening and improves the safety and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the outer structure of the retainer of the present invention.

[0018] Figure 4 It is a schematic structural diagram of the bearing inner ring and the sealing plate of the present invention.

[0019] Figure 5 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0020] Figure 6 It is a schematic diagram of the structure of the connection between the bearing inner ring, the bearing outer ring and the bottom outer ring of the present invention.

[0021] Figure 7 For the present invention Figure 6 Enlarged structural diagram at B in the middle.

[0022] The accompanying drawings are marked as follows: 1. bearing inner ring; 2. bearing outer ring; 3. bottom outer ring; 4. sealing gap; 5. bearing clearance; 6. retaining frame; 7. bearing ball; 8. reinforcement ring; 9. raceway plate; 10. sealing plate; 11. oil storage tank; 12. oil filling hole; 13. sealing piston; 14. first oil hole; 15. oil core; 16. annular groove; 17. stop ring; 18. second oil hole; 19. grease retainer; 20. raceway clearance. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] As attached Figure 1-7The high-speed direct-drive medical CT machine bearing shown in the figure comprises a bearing inner ring 1, a bearing outer ring 2 is mounted on the outer side of the bearing inner ring 1, a bottom outer ring 3 is mounted on the bottom of the bearing outer ring 2, a sealing gap 4 is formed between the bearing inner ring 1, the bearing outer ring 2 and the bottom outer ring 3, and a double-row ball rotation mechanism is arranged between the bearing inner ring 1 and the bearing outer ring 2; The double-row ball rotation mechanism includes a bearing clearance 5, which is provided on the surface of the bearing inner ring 1 and one side of the bearing outer ring 2. A retainer 6 is installed inside the bearing clearance 5, and the retainer 6 is fixedly connected to the bearing inner ring 1. Bearing balls 7 are installed on one side of the retainer 6, and a reinforcement ring 8 is fixedly connected to the other side of the retainer 6. A raceway plate 9 is provided on one side of the bearing balls 7, and a sealing plate 10 is fixedly connected to one side of the raceway plate 9. A lubrication mechanism is provided between the bearing outer ring 2 and the raceway plate 9.

[0025] As attached Figure 6 , 7 As shown, the lubrication mechanism includes an oil storage tank 11, which is opened inside the bearing outer ring 2. An oil filling hole 12 is opened on one side of the inner wall of the oil storage tank 11. The oil filling hole 12 is arranged on one side of the bearing outer ring 2. The oil storage tank 11 is arranged inside the bearing outer ring 2 without occupying additional space, making the bearing structure more compact. At the same time, a certain amount of lubricating oil can be stored in the space of the bearing outer ring 2 to provide guarantee for the continuous lubrication of the bearing. The setting of the oil filling hole 12 is convenient for replenishing lubricating oil into the oil storage tank 11 when needed to ensure that the bearing is always sufficiently lubricated.

[0026] As attached Figure 6 , 7 As shown, a sealing piston 13 is movably connected inside the oil filling hole 12, a first oil hole 14 is opened on one side of the inner wall of the oil storage tank 11, and an oil core 15 is fixedly installed inside the first oil hole 14. When oil replenishment is not needed, the sealing piston 13 can effectively prevent the lubricating oil in the oil storage tank 11 from leaking, thereby ensuring the sealing of the lubrication system. At the same time, the movable clamping method facilitates opening and closing of the oil filling hole 12, and the oil core 15 installed through the first oil hole 14 can use capillary action to slowly transport the lubricating oil in the oil storage tank 11 to the part that needs lubrication, thereby achieving a continuous and stable lubrication effect.

[0027] As attached Figure 6 , 7 As shown, a grease retainer 19 is fixedly installed on one side of the raceway plate 9. The grease retainer 19 is located on the top of the bearing ball 7. The sealing plate 10, the raceway plate 9 and the surface of one side of the grease retainer 19 are all provided with a second oil hole 18. The grease retainer 19 can store a certain amount of lubricating oil and slowly release it during the operation of the bearing to provide additional lubrication for the bearing ball 7 and the raceway plate 9. The second oil hole 18 can replenish the lubricating oil for the grease retainer 19 to ensure that the grease retainer 19 always has an adequate supply of lubricating medium.

[0028] As attached Figure 2 , 5 As shown in Figures 6 and 7, the cross-sectional shape of the raceway plate 9 is set to an L-shape, and the number of the reinforcement ring 8 and the raceway plate 9 are both set to two. The L-shape can better cooperate with the bearing ball 7 to provide a stable rolling track for the ball. At the same time, the L-shaped design can also increase the strength and rigidity of the raceway plate 9 and improve the bearing's carrying capacity. The two reinforcement rings 8 and the raceway plate 9 increase the structural stability of the bearing, can better withstand radial and axial loads, and improve the reliability of the bearing.

[0029] As attached Figure 2 , 6 As shown, an annular groove 16 is opened inside the bottom outer ring 3, and a retaining ring 17 is installed inside the annular groove 16. The annular groove 16 and the retaining ring 17 match each other. The retaining ring 17 is installed in the annular groove 16, which can limit the axial movement of the internal parts of the bearing, ensure the stability of the bearing during operation, prevent the bearing damage caused by axial movement, and improve the service life of the bearing.

[0030] As attached Figure 5 As shown, a raceway gap 20 is formed between the retaining frame 6 and the raceway plate 9. The raceway gap 20 provides a certain amount of space for the rolling of the bearing balls 7, plays a buffering role when the bearing is impacted or thermally expanded or contracted, and reduces the risk of wear and damage to the internal parts of the bearing.

[0031] As attached Figure 6 , 7 As shown, the bottom of the oil storage tank 11 is inclined with an angle of 5° to 10°, and the lower end is close to the first oil hole 14. The inclined design of the bottom of the oil storage tank 11 makes it easier for the lubricating oil to flow to the first oil hole 14 under the action of gravity, ensuring that the oil core 15 can continuously obtain the lubricating oil, thereby improving the efficiency and reliability of the lubrication system.

[0032] As attached Figure 6 , 7 As shown, the sealing piston 13 is made of oil-resistant rubber material. The sealing piston 13 made of oil-resistant rubber material has good sealing and oil resistance, can effectively prevent lubricating oil leakage, and is not easy to age and be damaged during long-term use, thereby ensuring the durability of the sealing performance.

[0033] Working principle of the present invention: During the use of the high-speed direct-drive medical CT machine bearing provided by the present invention, when the direct-drive medical CT machine scanning frame rotates, the rotation mechanism of the bearing starts to work, and the bearing ball 7 rolls on the raceway plate 9, so that the inner ring can rotate smoothly relative to the outer ring, thereby driving the scanning frame to achieve high-speed rotation to meet the needs of fast imaging of the CT machine. When the inner ring 1 of the bearing rotates, it drives the retaining frame 6 fixedly connected thereto to rotate, and the bearing ball 7 on the retaining frame 6 rolls in the space between the inner ring 1 of the bearing and the outer ring 2 of the bearing to realize the rotation function of the bearing. The reinforcement ring 8 is fixed on the other side of the retaining frame 6. , which plays a role in enhancing the structural strength of the cage 6, ensuring that the cage 6 can stably guide the bearing balls 7 to roll during high-speed rotation. The raceway plate 9 provides a rolling track for the bearing balls 7. Its cross-sectional shape is L-shaped, which fits closely with the bearing balls 7. The raceway gap 20 formed between the cage 6 and the raceway plate 9 provides a certain activity space for the rolling of the bearing balls 7, and also plays a buffering role when the bearing is impacted or thermally expanded or contracted. The sealing plate 10 is fixed on one side of the raceway plate 9, and works together with the raceway plate 9 to prevent external impurities from entering the interior of the bearing, and protect the bearing balls 7 and other internal structures; The oil storage tank 11 is provided inside the bearing outer ring 2 for storing lubricating oil. The bottom of the oil storage tank 11 is inclined at an angle of 5° to 10°, and the lower end is close to the first oil hole 14. Such a design makes it easier for the lubricating oil to flow to the first oil hole 14 under the action of gravity. The oil replenishing hole 12 is provided on one side surface of the bearing outer ring 2. When the lubricating oil needs to be replenished, the lubricating oil can be injected into the oil storage tank 11 through the oil replenishing hole 12. A sealing piston 13 is movably connected inside the oil replenishing hole 12. The sealing piston 13 is made of oil-resistant rubber. When the oil replenishing is not needed, the lubricating oil in the oil storage tank 11 can be effectively prevented from leaking. The first oil hole 14 is provided on the bearing outer ring 2. An oil core 15 is fixedly installed on one side of the inner wall of the oil storage tank 11. The oil core 15 can slowly transport the lubricating oil in the oil storage tank 11 to the part that needs lubrication through capillary action. A grease retainer 19 is fixedly installed on one side of the raceway plate 9. The grease retainer 19 is located on the top of the bearing ball 7. A second oil hole 18 is opened on the surface of one side of the sealing plate 10, the raceway plate 9 and the grease retainer 19. The second oil hole 18 is used to replenish the lubricating oil for the grease retainer 19. The grease retainer 19 can store a certain amount of lubricating oil and slowly release the lubricating oil during the operation of the bearing to provide continuous lubrication for the bearing ball 7 and the raceway plate 9. The sealing gap 4 formed between the bearing inner ring 1, the bearing outer ring 2 and the bottom outer ring 3 can, on the one hand, provide a certain space for the thermal expansion and contraction of the bearing due to temperature changes during operation, and on the other hand, it can also play a certain sealing role to prevent external impurities from directly entering the interior of the bearing. An annular groove 16 is opened inside the bottom outer ring 3, and a stop ring 17 is installed inside the annular groove 16. The stop ring 17 can limit the axial movement of the internal parts of the bearing to ensure the stability of the bearing during operation.

[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change; Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed direct-drive medical CT machine bearing, comprising a bearing inner ring (1), characterized in that: A bearing outer ring (2) is mounted on the outer side of the bearing inner ring (1), a bottom outer ring (3) is mounted on the bottom of the bearing outer ring (2), a sealing gap (4) is formed between the bearing inner ring (1), the bearing outer ring (2) and the bottom outer ring (3), and a double-row ball rolling mechanism is arranged between the bearing inner ring (1) and the bearing outer ring (2); The double-row ball rotation mechanism comprises a bearing clearance (5), wherein the bearing clearance (5) is provided on one side surface of the bearing inner ring (1) and the bearing outer ring (2), a retaining frame (6) is installed inside the bearing clearance (5), the retaining frame (6) is fixedly connected to the bearing inner ring (1), a bearing ball (7) is installed on one side of the retaining frame (6), a reinforcement ring (8) is fixedly connected to the other side of the retaining frame (6), a raceway plate (9) is provided on one side of the bearing ball (7), a sealing plate (10) is fixedly connected to one side of the raceway plate (9), and a lubrication mechanism is provided between the bearing outer ring (2) and the raceway plate (9).

2. The high-speed direct-drive medical CT machine bearing according to claim 1, characterized in that: The lubrication mechanism comprises an oil storage tank (11), the oil storage tank (11) is arranged inside the bearing outer ring (2), an oil replenishing hole (12) is arranged on one side surface of the inner wall of the oil storage tank (11), and the oil replenishing hole (12) is arranged on one side surface of the bearing outer ring (2).

3. The high-speed direct-drive medical CT machine bearing according to claim 2, characterized in that: A sealing piston (13) is movably engaged inside the oil replenishing hole (12), a first oil hole (14) is formed on one side of the inner wall of the oil storage tank (11), and an oil core (15) is fixedly installed inside the first oil hole (14).

4. The high-speed direct-drive medical CT machine bearing according to claim 1, characterized in that: A grease retainer (19) is fixedly mounted on one side of the raceway plate (9), the grease retainer (19) being located on the top of the bearing ball (7), and a second oil hole (18) is provided on the surface of one side of the sealing plate (10), the raceway plate (9) and the grease retainer (19).

5. The high-speed direct-drive medical CT machine bearing according to claim 1, characterized in that: The cross-sectional shape of the rolling plate (9) is set to be L-shaped, and the number of the reinforcement ring (8) and the rolling plate (9) is set to two.

6. The high-speed direct-drive medical CT machine bearing according to claim 1, characterized in that: An annular groove (16) is provided inside the bottom outer ring (3), a stop ring (17) is installed inside the annular groove (16), and the annular groove (16) and the stop ring (17) match each other.

7. The high-speed direct-drive medical CT machine bearing according to claim 1, characterized in that: A raceway gap (20) is formed between the retaining frame (6) and the raceway plate (9).

8. The high-speed direct-drive medical CT machine bearing according to claim 2, characterized in that: The bottom of the oil storage tank (11) is inclined at an angle of 5° to 10°, and the lower end is close to the first oil hole (14).

9. The high-speed direct-drive medical CT machine bearing according to claim 3, characterized in that: The sealing piston (13) is made of oil-resistant rubber material.

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