转轴支撑装置及压缩机

Abstract

本实用新型公开了转轴支撑装置及压缩机。本实用新型的转轴支撑装置包括轴承组件和位移检测机构。轴承组件包括安装座构件、第一轴承和第二轴承，安装座构件包括探头固定部、第一轴承安装部和第二轴承安装部，第一轴承安装部、第二轴承安装部和探头固定部三者一体成型，第一轴承安装部设有第一轴承孔，第二轴承安装部设有第二轴承孔，第一轴承孔内安装有第一轴承，第二轴承孔内安装有第二轴承，探头固定部形成有环设于第一轴承孔的轴线的第一内周面。位移检测机构包括位移检测探头，至少部分位移检测探头位于探头安装孔内。第一轴承安装部、第二轴承安装部和探头固定部三者一体成型，可以提高装配效率，改善位移检测探头的安装精度。

Claims

1. A rotating shaft support device characterized by comprising: include: A bearing assembly includes a mounting base component, a first bearing, and a second bearing. The mounting base component includes a probe fixing part, a first bearing mounting part, and a second bearing mounting part. The first bearing mounting part, the second bearing mounting part, and the probe fixing part are integrally formed. The first bearing mounting part has a first bearing hole, and the second bearing mounting part has a second bearing hole. The first bearing hole houses the first bearing, and the second bearing hole houses the second bearing. The probe fixing part forms a first inner circumferential surface that is circumferentially disposed on the axis of the first bearing hole. The first inner circumferential surface, the first bearing, and the second bearing are respectively used to support a rotating shaft. The first inner circumferential surface has a probe mounting hole. A displacement detection mechanism includes a displacement detection probe, at least a portion of which is located within a probe mounting hole.

2. The pivot support apparatus according to claim 1, characterized by The first inner circumferential surface, the first bearing, and the second bearing are arranged along the same axis.

3. The pivot support apparatus according to claim 1, characterized by The probe fixing part is located between the first bearing and the second bearing.

4. The pivot support apparatus according to claim 1, characterized by The probe fixing part, the first bearing mounting part, and the second bearing mounting part together define a receiving cavity. The displacement detection mechanism also includes a displacement detection circuit board, which is located in the receiving cavity and connected to the probe fixing part, and is electrically connected to the displacement detection probe.

5. The rotating shaft support device according to claim 4, characterized in that, The surface of the displacement detection circuit board is provided with an insulating protective layer.

6. The pivot support apparatus according to claim 4, wherein The outer peripheral surface of the mounting base component is provided with a clearance groove, and the bottom wall of the clearance groove is provided with the probe mounting hole.

7. The pivot support apparatus according to claim 4, wherein The displacement detection mechanism also includes a first through hole communicating with the receiving cavity; The displacement detection circuit board is electrically connected to a wiring, one end of which passes through the first through hole; or, the displacement detection circuit board is electrically connected to a first terminal, which is configured to be electrically plugged into a second terminal passing through the first through hole.

8. The pivot support apparatus according to claim 1, characterized by The number of displacement detection probes is multiple, and the multiple displacement detection probes are spaced apart along the circumferential direction of the first inner circumferential surface.

9. The pivot support apparatus according to claim 1, characterized by The probe fixing part, the first bearing mounting part, and the second bearing mounting part together define a receiving cavity. Along the axial direction of the first bearing, at least one side of the mounting base component is provided with a ventilation hole communicating with the receiving cavity.

10. The pivot support apparatus according to any one of claims 1 to 9, characterized by The first bearing is a radial magnetic levitation bearing, which includes: The cylindrical component has a sidewall that surrounds the axis of the first bearing, and the sidewall has a mounting cavity; A radial bearing core is installed inside the mounting cavity.

11. The pivot support apparatus according to claim 10, wherein The mounting cavity has a first mounting position and a second mounting position, which are spaced apart along the axial direction of the first bearing. The radial bearing core is mounted on the first mounting position and the second mounting position, respectively.

12. The pivot support apparatus of claim 11, wherein The cylindrical component includes a first cylindrical body, a second cylindrical body, and an excitation element. Along the axial direction of the first bearing, the excitation element is located between the first cylindrical body and the second cylindrical body. The first cylindrical body and the second cylindrical body are connected. At least one of the first cylindrical body and the second cylindrical body is connected to the excitation element. The excitation element is arranged around the axis of the first bearing. The first cylindrical body is provided with a first mounting position, and the second cylindrical body is provided with a second mounting position.

13. The pivot support apparatus according to any one of claims 1 to 9, characterized by The shaft support device further includes a first axial limiting structure and a second axial limiting structure. The inner surface of the second bearing hole is provided with the first axial limiting structure. Along the axial direction of the first bearing, the first axial limiting structure and the second axial limiting structure are spaced apart. The first axial limiting structure and the second axial limiting structure respectively limit and cooperate with the second bearing. The second axial limiting structure is connected to the mounting base component.

14. The pivot support apparatus of claim 13, wherein The first axial limiting structure includes a first limiting member, and the surface of the second bearing hole is provided with a groove, and the first limiting member is engaged in the groove; Alternatively, the first axial limiting structure may be a limiting protrusion formed on the surface of the second bearing hole.

15. The pivot support apparatus of claim 13, wherein The second bearing is a radial ball bearing or a radial roller bearing. The outer ring of the second bearing abuts against the first axial limiting structure and the second axial limiting structure, respectively. Along the radial direction of the second bearing, the inner ring of the second bearing is spaced apart from the first axial limiting structure and the second axial limiting structure, respectively.

16. A compressor characterized by, The device includes a rotor and a shaft support device as described in any one of claims 1-15, wherein the rotor includes the shaft, the shaft passes through the first bearing and the second bearing, and the shaft is spaced apart from the first bearing and the second bearing respectively along the radial direction of the shaft.

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