Heat resistance and conduction structure of bearing for medical imaging equipment

A technology of medical imaging and heat conduction resistance, applied in the field of bearings, can solve the problem of short service life of bearings, and achieve the effect of extending the service life, reducing the temperature and improving the lubrication performance.

Active Publication Date: 2014-12-10
上海天虹微型轴承有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, no matter the existing bearing structure for CT machine ball tube or X-ray ball tube, there is still the prob

Method used

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  • Heat resistance and conduction structure of bearing for medical imaging equipment
  • Heat resistance and conduction structure of bearing for medical imaging equipment
  • Heat resistance and conduction structure of bearing for medical imaging equipment

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] See Image 6 , The heat conduction resistance structure of the X-ray tube bearing of medical imaging equipment includes the bearing main body part 100, the bearing neck 200, and the bearing flange 300. A hollow heat dissipation column 400 extends from one side of the bearing flange toward the bearing main body part. , The hollow heat dissipation column 400 is connected with the bearing neck 200, and the bearing neck 200 is connected with the main bearing part 100. The bearing flange 300 is provided with a bolt connection hole 310 to facilitate connection with the flange of the molybdenum rod, and the bolt connection hole is located on the outer side of the hollow heat dissipation column. The contact area between the end face 320 of the bearing flange and the flange of the molybdenum rod is reduced.

[0038] See Figure 7 The cross-sectional structure of the side wall of the hollow heat dissipation column is a combination structure in which a plurality of ...

Example Embodiment

[0045] Example 2

[0046] Figure 8 Shown is the heat conduction resistance structure of the CT machine ball tube bearing of the medical imaging equipment, and the structure principle is the same as that in the first embodiment. It includes a bearing main body, a bearing neck, and a bearing flange. A hollow radiating column extends from one side of the bearing flange toward the bearing main body. The hollow radiating column is connected to the bearing neck, and the bearing neck is connected to the bearing main body. . Bolt connection holes are provided on the bearing flange to facilitate connection with the flange of the molybdenum rod. The bolt connection hole is located on the outer side of the hollow heat dissipation column. The cross-sectional structure of the side wall of the hollow heat dissipation column is a combined structure with three thin walls arranged in a zigzag shape.

Example Embodiment

[0047] Example 3

[0048] Picture 9 Shown is a schematic diagram of another type of bearing thermal resistance structure.

[0049] The cross-sectional structure of the side wall of the hollow heat dissipation column is a combined structure with three thin walls arranged in a zigzag shape. The smallest conductive cross-sectional area is in the innermost layer, with its outer circle φ16.4mm and inner hole φ13.4mm.

[0050] Cross-sectional area: [ ( 16.4 2 ) 2 - ( 13.4 2 ) 2 ] · π = 70.179 mm 2

[0051] Note: It has 4-φ5 perforation 420 in the middle of the outer diameter, so the cross-sectional area of ​​4-φ5 hole should be removed at the minimum cross-sectional area. The center diameter of the innermost layer is φ14.9×π=48.81mm, four holes 4×5=20mm, occupying 41% of the cross-sectional area.

[0052] So the minimum cross-sectional area is 70.179×(1-41%)= 41.41mm 2 .

[0053] The cross-sectional area of ​​heat conduction at th...

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Abstract

The invention discloses a heat resistance and conduction structure of a bearing for medical imaging equipment. The heat resistance and conduction structure comprises a bearing body portion, a bearing neck portion and a bearing flange. One side of the bearing flange extends in the direction of the bearing body portion to form a hollow heat radiation column, the hollow heat radiation column is connected with the bearing neck portion, and the bearing neck portion is connected with the bearing body portion. The sectional structure of the side wall of the hollow heat radiation column is of a combined structure formed by arranging a plurality of layers of thin walls in a zigzag shape. The structure is adopted, the thickness of the thin walls of the hollow heat radiation column of the structure is smaller than that of the side wall of an existing hollow heat radiation column, the thickness of the thin walls is reduced to 1.5 mm from 1.75 mm for bearings for CT machine ball pipes, the thickness of the thin walls is only 1.0 mm for bearings for X-ray ball pipes, the heat transfer distance is approximate N times that of original thin walls (N is the number of the layers of thin walls), and therefore heat transfer can be slowed greatly. According to the structure, the temperature of a bearing work area of the bearing body portion can be reduced greatly, the lubrication performance of solid lubricants is greatly improved, and the service life of the bearing is prolonged.

Description

technical field [0001] The invention relates to the field of bearings, in particular to a heat-resistance structure suitable for bearings used in X-ray tubes of medical imaging equipment and CT machine tubes. Background technique [0002] The key component of medical X-ray tubes and CT machine tubes is a high-temperature-resistant, high-vacuum, oil-free high-speed bearing inside. The bearing is made of high temperature resistant steel and adopts solid lubrication technology. The quality of the bearing depends entirely on its lubrication in addition to its own accuracy. The most critical thing is the life of the solid lubricant. Once the lubricant fails, the life of the bearing will end immediately, and the entire ball tube will be scrapped. The performance of solid lubrication (friction coefficient and life, etc.) is closely related to the bearing temperature. The lower the temperature, the better the lubrication performance and the longer the service life. [0003] see f...

Claims

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Application Information

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IPC IPC(8): A61B6/00A61B6/03
Inventor 张光宙范为民董维凯
Owner 上海天虹微型轴承有限公司
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