Bearing assembly, rotating anode assembly, x-ray tube, and x-ray scanning apparatus

Abstract

The utility model discloses a bearing assembly, a rotating anode assembly, an X-ray tube and an X-ray scanning device. The bearing assembly comprises a mandrel, a first ball, a first bearing outer ring and a bearing sleeve. Wherein the first bearing outer ring supports the mandrel to rotate in the bearing sleeve through the first balls, and at least one part of the first bearing outer ring is inserted into the bearing sleeve. A flange is arranged at the front end of the first bearing outer ring and fixedly connected with the front end face of the bearing sleeve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of X-ray scanning equipment, in particular to a bearing assembly, a rotating anode assembly, an X-ray tube and an X-ray scanning equipment. BACKGROUND

[0002] The X-ray tube bearing is mainly used in the X-ray tube as a rotating anode part, and needs to meet the requirements of bearing high temperature, anode bearing and good electrical conductivity.

[0003] In the utility model patent with the patent application number CN117345764A, a bearing unit with a positioning and pre-tightening structure is designed; its components include a sleeve, a mandrel, two bearing outer rings, a sleeve ring (a spacer ring) between the two outer rings, a C ring, a clamp spring and a wave spring, and an axial positioning structure is innovatively designed at the connection between the sleeve ring and the sleeve. In the utility model patent with the patent application number CN222277259U, a bearing unit with a positioning and pre-tightening structure is also designed, and the key lies in the structure of the bearing sleeve material combined with dispersed copper and martensitic stainless steel, which is beneficial to heat dissipation and meets the strength requirements.

[0004] However, in the utility model patent with the patent application number CN117345764A and similar patents, the positioning and pre-tightening structure needs to use a clamp spring for axial positioning, which requires a certain distance between the front raceway and the flange surface, thereby increasing the torque on the raceway. In addition, the patent increases a positioning groove and a positioning ring at the corresponding positions of the sleeve ring and the sleeve to realize the axial positioning of the front raceway, which undoubtedly increases the difficulty, precision and related cost of processing and assembly. In the utility model patent with the patent application number CN222277259U, the selection of the bearing sleeve material is considered, but the bearing sleeve and the bearing outer ring are not treated, which may affect the axial movement of the outer ring after thermal expansion, causing jamming.

[0005] At present, there is no effective solution to the technical problems of the bearing target disc and the assembly being heavy, the front raceway of the bearing being subjected to excessive torque under high bearing load, the compactly designed bearing being difficult to connect and assemble, and the bearing sleeve and the bearing outer ring being too close after thermal expansion, causing scratching and possible jamming. Utility model content

[0006] The utility model provides a kind of bearing assembly, rotating anode assembly, X-ray tube and X-ray scanning equipment to at least solve the technical problems of the bearing target disc and the weight of assembly in prior art, bearing load high, bearing front raceway is subjected to excessive torque;Small space compact design bearing is difficult to connect and assemble;And after thermal expansion, the scratch and possible jamming caused by the gap between outer ring and bearing sleeve being too small.

[0007] According to one aspect of the present application, a bearing assembly is provided, comprising: a mandrel, first balls, a first bearing outer ring, and a bearing sleeve. The first bearing outer ring supports the mandrel for rotation within the bearing sleeve via the first balls, and at least a portion of the first bearing outer ring is inserted within the bearing sleeve. A flange is provided at a front end of the first bearing outer ring, and the flange is fixedly connected to a front end face of the bearing sleeve.

[0008] Further, according to another aspect of the utility model, a rotating anode assembly is provided, comprising: an anode target disc and the bearing assembly according to any one of the above, wherein the anode target disc is connected to the rotor sleeve and the mandrel of the bearing assembly. Further, the anode target disc is connected to the flange plate of the mandrel.

[0009] Further, according to another aspect of the utility model, an X-ray tube is provided, comprising the anode assembly according to the above.

[0010] Further, according to another aspect of the utility model, an X-ray scanning device is provided, comprising the X-ray tube according to the above.

[0011] In the utility model, the bearing assembly does not need a circlip structure. The first bearing outer ring is directly fixedly connected to the front end face of the bearing sleeve via the flange, thereby reducing the distance from the front raceway to the flange face and further reducing the torque experienced by the front raceway. Thus, the technical problem of increased torque experienced by the pipeline of the existing X-ray tube bearing is solved. Further, the first bearing outer ring is connected to the bearing sleeve via a screw in the utility model. Thus, when the screw is installed, the screw can be tightened via the mounting hole, thereby solving the problem of small space assembly. Further, the inner side wall surface of the bearing sleeve of the utility model is provided with a layer of conductive material, thereby improving the scratch and possible jamming caused by the gap between the outer ring and the bearing sleeve being too small after thermal expansion and the direct contact between the two materials.

[0012] The above and other objects, advantages and features of the utility model will become more apparent from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0013] Some specific embodiments of the present application will be described in detail below with reference to the attached drawings. The same reference numbers in different drawings denote the same or similar components or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

[0014] Figure 1 is a schematic perspective view of a bearing assembly according to an embodiment of the present application; and

[0015] Figure 2 is Figure 1 is a schematic side view of the front face of a mandrel of the bearing assembly shown. DETAILED DESCRIPTION

[0016] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0017] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0018] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged as appropriate, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0019] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or combination thereof.

[0020] Figure 1is a schematic perspective view of a bearing assembly according to an embodiment of the present application. In particular, the bearing assembly can be an X-ray tube bearing for an X-ray tube, for example. Reference is made to Figure 1 As shown, the bearing assembly comprises a mandrel 100, first balls 610, a first bearing outer ring 200, and a bearing sleeve 400. The first bearing outer ring 200 supports the mandrel 100 to rotate in the bearing sleeve 400 via the first balls 610, and at least a portion of the first bearing outer ring 200 is inserted into the bearing sleeve 400. A front end of the first bearing outer ring 200 is provided with a flange 210, and the flange 210 is fixedly connected with a front end face of the bearing sleeve 400.

[0021] As described in the background, the existing X-ray tube bearing positioning and pre-tightening structure for an X-ray tube requires a circlip to be used for axial positioning, thereby requiring a certain distance between the front raceway and the flange face, which in turn increases the torque on the raceway.

[0022] Reference is made to Figure 1 As shown, in the present application, the bearing assembly can not require a circlip structure. The first bearing outer ring 200 is directly fixedly connected with the front end face of the bearing sleeve 400 via the flange 210, thereby reducing the distance between the front raceway and the flange face, and further reducing the torque on the front raceway. Thus, the technical problem of increased torque on the raceway existing in the existing X-ray tube bearing is solved.

[0023] Optionally, the flange 210 is fixedly connected with the front end face of the bearing sleeve 400 via a screw 700. Since the prior art increases a positioning groove and a positioning ring at the corresponding position of the collar and the sleeve to achieve axial positioning of the front raceway, this design undoubtedly increases the difficulty, precision, and related cost of machining and assembly. However, the present application connects the first bearing outer ring 200 with the bearing sleeve 400 via the screw 700, thereby solving the problem of small-space assembly. Preferably, the screw 700 can be a screw made of Kovar material which is resistant to high temperature and high strength.

[0024] Further, reference is made to Figure 1 As shown, the front end face of the bearing sleeve 400 is provided with a screw hole 410 corresponding to the screw 700, and the flange 210 is provided with a through hole 211 corresponding to the screw 700.

[0025] Further, reference is made to Figure 1 and Figure 2 As shown, the front end of the mandrel 100 is provided with a flange plate 110, and the flange plate 110 is provided with a mounting hole 111 corresponding to the screw hole 410. Thus, when the screw 700 is installed, the screw 700 can be tightened via the mounting hole 111. Thus, the problem of small-space assembly is solved.

[0026] Optionally, the bearing assembly further comprises a second bearing outer ring 500, which is arranged in the bearing sleeve 400 and supports the spindle 100 to rotate in the bearing sleeve 400 through the second rolling balls 620, and

[0027] The C-shaped ring 300 is arranged between the first bearing outer ring 200 and the second bearing outer ring 500.

[0028] Optionally, the inner side wall surface of the bearing sleeve 400 is provided with a conductive material layer 402. Specifically, in order to improve the scratch and possible jamming caused by the too small gap between the outer ring and the bearing sleeve after thermal expansion and the direct contact between the two materials, a coating / plating layer 402 is added to the inner diameter of the bearing sleeve by surface treatment technology. The coating / plating layer is selected to be silver material with good electrical conductivity and high lubrication coefficient, and the thickness of the silver layer is about 1-2 um.

[0029] Optionally, the rear end of the bearing sleeve 400 is provided with a bearing sleeve welding edge 401. Thus, the bearing assembly is welded with the tube shell of the X-ray tube through the bearing sleeve welding edge 401, and after welding, the bearing sleeve welding edge 401 serves as a support to fix the rotating anode assembly in the tube shell.

[0030] Further, according to another aspect of the present application, a rotating anode target disc is provided, comprising: an anode target disc and the bearing assembly according to any one of the above, wherein the anode target disc is connected with the spindle 100 of the bearing assembly. Further, the anode target disc is connected with the flange plate 110 of the spindle 100.

[0031] Further, according to another aspect of the present application, an X-ray tube is provided, comprising the anode target disc according to the above.

[0032] Further, according to another aspect of the present application, an X-ray scanning device is provided, comprising the X-ray tube according to the above.

[0033] In the present application, the bearing assembly does not need a circlip structure. The first bearing outer ring is directly fixedly connected with the front end face of the bearing sleeve through the flange, thereby reducing the distance from the front raceway to the flange face and further reducing the torque borne by the front raceway. Thus, the technical problem of the increased torque borne by the pipeline of the existing X-ray tube bearing is solved. Further, the first bearing outer ring is connected with the bearing sleeve through a screw in the present application. Thus, when the screw is installed, the screw can be tightened through the installation hole, thereby solving the small space assembly problem. Further, the inner side wall surface of the bearing sleeve of the present application is provided with a conductive material layer, thereby improving the scratch and possible jamming caused by the too small gap between the outer ring and the bearing sleeve after thermal expansion and the direct contact between the two materials.

[0034] The foregoing summary, as well as the following detailed description of applications, is better understood when read in conjunction with the drawings, for illustrative purposes, in which like reference characters are used throughout the drawings, wherein: FIG. 1 is a schematic diagram of a system for providing a user with a virtual reality experience, according to an embodiment of the present application;

[0035] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "vertical", "horizontal", "top", "bottom", and derivatives thereof shall relate to the application as it is oriented in use. The terms "antecedent" and "consequent" shall refer to the terms "preceding" and "following", respectively, to indicate a cause and effect relation between the terms in question. The terms "coupled" and "associated" shall mean to be directly or indirectly connected so as to permit the flow of, for example, power to be used to enable operation of or electronic communication between the devices in question.

[0036] In the description of the present application, it is to be understood that the specific structural or relative location relationships indicated by the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like are generally based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of contrary description, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0037] The above description is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements within the technical range disclosed by the present application can be easily thought of by those skilled in the art, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A bearing assembly comprising: The core shaft (100), the first ball (610), the first bearing outer ring (200) and the bearing sleeve (400), wherein the first bearing outer ring (200) supports the core shaft (100) to rotate in the bearing sleeve (400) through the first ball (610), and at least a part of the first bearing outer ring (200) is inserted into the bearing sleeve (400), characterized in that, The front end of the first bearing outer ring (200) is provided with a flange (210), and the flange (210) is fixedly connected with the front end surface of the bearing sleeve (400).

2. The bearing assembly of claim 1, wherein, The flange (210) is fixedly connected with the front end surface of the bearing sleeve (400) through a screw (700).

3. The bearing assembly of claim 2, wherein, The front end surface of the bearing sleeve (400) is provided with a screw hole (410) corresponding to the screw (700), and the flange (210) is provided with a through hole (211) corresponding to the screw hole (410).

4. The bearing assembly of claim 3, wherein, The front end of the core shaft (100) is provided with a flange plate (110), and the flange plate (110) is provided with a mounting hole (111) corresponding to the screw hole (410).

5. The bearing assembly of claim 1, wherein, Further comprising a second bearing outer ring (500), the second bearing outer ring (500) is arranged in the bearing sleeve (400), and supports the core shaft (100) to rotate in the bearing sleeve (400) through a second ball (620), and The first bearing outer ring (200) and the second bearing outer ring (500) are provided with a C-shaped ring (300) therebetween.

6. The bearing assembly of claim 1, wherein, The inner side wall surface of the bearing sleeve (400) is provided with a layer of conductive material (402).

7. The bearing assembly of claim 1, wherein, The rear end of the bearing sleeve (400) is provided with a bearing sleeve welding edge (401).

8. A rotating anode assembly comprising: The anode target disc, the rotor sleeve and the bearing assembly according to any one of claims 1-7, wherein the anode target disc is connected with the core shaft of the bearing assembly.

9. An X-ray tube comprising the rotating anode assembly according to claim 8.

10. An X-ray scanning device comprising the X-ray tube according to claim 9.

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