Magnetic suspension bearing radial position sensor positioning adjusting device

Abstract

The utility model discloses a magnetic suspension bearing radial position sensor positioning adjusting device which comprises a base plate and a positioning tool, the positioning tool comprises a positioning portion and a calibration portion, the positioning portion is located below the calibration portion and vertically arranged on the base plate, and the outer diameter of the positioning portion is matched with an inner hole of a protection bearing. The outer diameter of the calibration part is matched with the outer diameter of a standard rotor shaft; when the magnetic suspension bearing radial position sensor positioning and adjusting device is used for detection, the protection bearing of the magnetic suspension bearing shell assembly sleeves the positioning part, so that the positioning part and the protection bearing are concentric, the radial position sensors are located on the periphery of the calibration part, and the distance between each radial position sensor and the calibration part is detected through the detection assembly; and the mounting position of the radial position sensor on the sensor mounting rack is adjusted according to the detection result, so that the detection precision is remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic levitation, and particularly relates to a positioning and adjusting device for a radial position sensor of a magnetic levitation bearing. Background Art

[0002] With the development of magnetic levitation technology, high-speed magnetic levitation motors are increasingly applied in various industries. Traditional motors use mechanical bearings to support the rotating shaft, with relatively low rotational speeds. Generally, a gear mechanism is required to increase the rotational speed, resulting in transmission losses and mechanical friction losses. However, magnetic levitation motors use magnetic levitation bearings to support the rotating shaft, suspending the rotating shaft in space using electromagnetic force, enabling high-speed operation, and having characteristics such as no mechanical friction, long lifespan, and low noise.

[0003] Currently, when installing a magnetic levitation bearing, a radial position sensor needs to be installed to detect the real-time position information of the rotor. Most of the existing installation methods are manual installations, that is, the motor rotor is vertically placed in the protective bearing manually, and then the radial position sensor is installed at the outer edge of the motor rotor. Due to the large volume and mass of the motor rotor, it is very easy to cause the deviation of the axis positions of the protective bearing and the motor rotor during installation, resulting in inaccurate detection. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a positioning and adjusting device for a radial position sensor of a magnetic levitation bearing to solve the problem of inaccurate detection in the conventional manual installation in the prior art.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A positioning and adjusting device for a radial position sensor of a magnetic levitation bearing is used to perform positioning and adjustment on the radial position sensor on a magnetic levitation bearing housing assembly. The magnetic levitation bearing housing assembly includes a housing, a protective bearing, and a sensor mounting bracket. The protective bearing is sleeved in the mounting hole of the housing, the sensor mounting bracket is installed inside the protective bearing, and a plurality of radially extending radial position sensors are installed at intervals on the sensor mounting bracket. The positioning and adjusting device for the radial position sensor of the magnetic levitation bearing includes a substrate and a positioning tooling, wherein:

[0007] The positioning tooling includes a positioning part and a calibration part. The positioning part is located below the calibration part. The positioning part is vertically arranged on the substrate. The outer diameter of the positioning part is set to match the inner hole of the protective bearing, and the outer diameter of the calibration part is set to match the outer diameter of a standard rotor shaft;

[0008] During detection, the protective bearing of the magnetic levitation bearing housing assembly is sleeved on the positioning portion so that the positioning portion is concentric with the protective bearing. A plurality of the radial position sensors are located on the periphery of the calibration portion. The detection assembly detects the distance between each radial position sensor and the calibration portion, and adjusts the installation position of the radial position sensor on the sensor mounting bracket according to the detection result.

[0009] Furthermore, there is a gap between the positioning portion and the inner side surface of the protective bearing. The positioning portion is provided with at least one installation groove in the circumferential direction, and an elastic member is arranged in the at least one installation groove. One end of the elastic member extends into the gap and abuts against the inner side surface of the protective bearing.

[0010] Furthermore, there are two installation grooves, and the two installation grooves are spaced apart in the height direction on the positioning portion.

[0011] Furthermore, the housing, the protective bearing and the sensor mounting bracket are integrally formed.

[0012] Furthermore, positioning holes are provided on the substrate, and positioning bosses are provided at the bottom of the positioning portion. The positioning bosses are arranged corresponding to the positioning holes. After the positioning portion is placed in place, the positioning bosses are located in the positioning holes.

[0013] Furthermore, the calibration portion is cylindrical and the outer diameter of the calibration portion is smaller than the inner diameter of the protective bearing.

[0014] Furthermore, an installation rod is provided at the upper end of the calibration portion, and the positioning portion is vertically arranged on the substrate by operating the installation rod.

[0015] Compared with the prior art, the beneficial effects of the magnetic levitation bearing radial position sensor positioning and adjusting device are as follows: During detection, the protective bearing of the magnetic levitation bearing housing assembly is sleeved on the positioning portion so that the positioning portion is concentric with the protective bearing. The detection assembly detects the distance between each radial position sensor and the calibration portion, and adjusts the installation position of the radial position sensor on the sensor mounting bracket according to the detection result, significantly improving the detection accuracy; by placing an elastic member in the installation groove, it is convenient for installation on the basis of ensuring the concentricity between the positioning portion and the protective bearing. Description of the Drawings

[0016] To more clearly illustrate and understand the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the background art and embodiment descriptions of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present invention and these drawings.

[0017] Figure 1 is a cross-sectional schematic view of the positioning and adjusting device for the radial position sensor of the magnetic levitation bearing provided by the embodiment of the present invention;

[0018] Figure 2 is a top view schematic view of the positioning and adjusting device for the radial position sensor of the magnetic levitation bearing provided by the embodiment of the present invention;

[0019] Figure 3 is a structural schematic view of the analog detection piece provided by the embodiment of the present invention. Detailed implementation manners

[0020] The following will further illustrate the technical solutions of the present invention in conjunction with the accompanying drawings and through specific implementation manners.

[0021] To facilitate the understanding of the present invention, the following will describe the present invention more comprehensively with reference to the relevant accompanying drawings. The preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] Please refer to Figures 1 to 3As shown in the figure, in this embodiment, a positioning and adjusting device for a radial position sensor of a magnetic levitation bearing is used to position and adjust the radial position sensor 4 on the magnetic levitation bearing housing assembly. The magnetic levitation bearing housing assembly includes a housing 1, a protective bearing 2, and a sensor mounting bracket 3. The protective bearing 2 is sleeved in the mounting hole of the housing 1, the sensor mounting bracket 3 is installed inside the protective bearing 2, and a plurality of radially extending radial position sensors 4 are spacedly installed on the sensor mounting bracket 3. The positioning and adjusting device for the radial position sensor of the magnetic levitation bearing includes a substrate 5 and a positioning tooling 6, where: The positioning tooling 6 includes a positioning portion 60 and a calibration portion 61. The positioning portion 60 is located below the calibration portion 61. The positioning portion 60 is vertically arranged on the substrate 5. The outer diameter of the positioning portion 60 is set to match the inner hole of the protective bearing 2, and the outer diameter of the calibration portion 61 is set to match the outer diameter of a standard rotor shaft. During detection, the protective bearing 2 of the magnetic levitation bearing housing assembly is sleeved on the positioning portion 60 so that the positioning portion 60 is concentric with the protective bearing 2. The plurality of radial position sensors 4 are located outside the calibration portion 61. The detection assembly detects the distance between each radial position sensor 4 and the calibration portion 61 and adjusts the installation position of the radial position sensor 4 on the sensor mounting bracket 3 according to the detection result.

[0023] It can be seen that during detection, the protective bearing 2 of the magnetic levitation bearing housing assembly is sleeved on the positioning portion 60, making the positioning portion 60 concentric with the protective bearing 2. By detecting the distance between each radial position sensor 4 and the calibration portion 61 with the detection assembly and adjusting the installation position of the radial position sensor 4 on the sensor mounting bracket 3 according to the detection result, the detection accuracy is significantly improved.

[0024] As an implementation manner, there is a gap between the positioning portion 60 and the inner side surface of the protective bearing 2. The positioning portion 60 is provided with at least one installation groove 600 along the circumferential direction, and an elastic member 601 is arranged in at least one installation groove 600. One end of the elastic member 601 extends into the gap and abuts against the inner side surface of the protective bearing 2.

[0025] It should be noted that the gap between the positioning portion 60 and the protective bearing 2 is about 0.1 mm.

[0026] It can be seen that by placing the elastic member 601 in the installation groove 600, it is convenient for installation on the basis of ensuring the concentricity between the positioning portion 60 and the protective bearing 2.

[0027] As an implementation manner, two installation grooves 600 are provided, and the two installation grooves 600 are spacedly opened on the positioning portion 60 along the height direction.

[0028] As an implementation manner, the housing 1, the protective bearing 2, and the sensor mounting bracket 3 are integrally formed.

[0029] As an implementation manner, positioning holes 50 are provided on the substrate 5, a positioning boss 51 is provided at the bottom of the positioning portion 60, the positioning boss 51 is provided corresponding to the positioning holes 50, and after the positioning portion 60 is placed in place, the positioning boss 51 is located within the positioning holes 50.

[0030] As an implementation manner, the calibration portion 61 is cylindrical and the outer diameter of the calibration portion 61 is smaller than the inner diameter of the protective bearing 2.

[0031] As an implementation manner, an installation rod 7 is provided at the upper end of the calibration portion 61, and the positioning portion 60 is vertically arranged on the substrate 5 by operating the installation rod 7.

[0032] When the above magnetic levitation bearing radial position sensor positioning and adjusting device is detecting: First, the positioning portion 60 is vertically arranged on the substrate 5 through the installation rod 7. After the positioning portion 60 is placed in place, the positioning boss 51 is located within the positioning holes 50; then, the housing 1 is placed at a preset position so that the positioning portion 60 and the protective bearing 2 are concentrically placed; finally, the distance between each radial position sensor 4 and the calibration portion 61 is detected by the detection component, and the installation position of the radial position sensor 4 on the sensor mounting bracket 3 is adjusted according to the detection result to complete the adjustment.

[0033] It should be noted that: The housing 1 can also be first installed at a preset position on the substrate 5, and then the positioning tooling 6 is vertically placed through the installation rod 7.

[0034] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above examples. Without departing from the spirit and scope of the present invention, there are various changes and modifications to the present invention, and these changes and modifications all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning and adjustment device for a radial position sensor of a magnetic bearing, used for positioning and adjusting a radial position sensor on a magnetic bearing shell assembly, wherein the magnetic bearing shell assembly comprises a shell, a protective bearing and a sensor mounting frame, wherein the protective bearing is sleeved in a mounting hole of the shell, the sensor mounting frame is mounted on the inner side of the protective bearing, and a plurality of radial position sensors extending radially are installed at intervals on the sensor mounting frame, characterized in that: The magnetic bearing radial position sensor positioning and adjustment device comprises a base plate and a positioning tool, wherein: The positioning fixture comprises a positioning part and a calibration part, wherein the positioning part is located below the calibration part, the positioning part is vertically arranged on the substrate, the outer diameter of the positioning part is arranged to match the inner hole of the protective bearing, and the outer diameter of the calibration part is arranged to match the outer diameter of a standard rotor shaft; During detection, the protective bearing of the magnetic levitation bearing shell assembly is sleeved on the positioning portion so that the positioning portion is concentric with the protective bearing, and several radial position sensors are located at the periphery of the calibration portion. The distance between each radial position sensor and the calibration portion is detected by the detection component, and the installation position of the radial position sensor on the sensor mounting frame is adjusted according to the detection result.

2. The positioning and adjusting device for the radial position sensor of a magnetic bearing according to claim 1, characterized in that: There is a gap between the positioning portion and the inner side surface of the protective bearing. The positioning portion is circumferentially provided with at least one mounting groove. An elastic member is arranged in the at least one mounting groove. One end of the elastic member extends into the gap and abuts against the inner side surface of the protective bearing.

3. The positioning and adjusting device for the radial position sensor of a magnetic bearing according to claim 2, characterized in that: There are two mounting grooves, and the two mounting grooves are arranged on the positioning portion at intervals along the height direction.

4. The positioning and adjusting device for the radial position sensor of a magnetic bearing according to claim 1, characterized in that: The housing, the protective bearing and the sensor mounting frame are integrally formed.

5. The positioning and adjusting device for the radial position sensor of a magnetic bearing according to claim 1, characterized in that: A positioning hole is provided on the substrate, and a positioning boss is provided at the bottom of the positioning portion. The positioning boss is arranged corresponding to the positioning hole. After the positioning portion is placed in place, the positioning boss is located in the positioning hole.

6. The positioning and adjusting device for the radial position sensor of a magnetic bearing according to claim 1, characterized in that: The calibration portion is cylindrical and the outer diameter of the calibration portion is smaller than the inner diameter of the protective bearing.

7. The positioning and adjusting device for the radial position sensor of a magnetic bearing according to claim 6, characterized in that: A mounting rod is provided at the upper end of the calibration portion, and the positioning portion is vertically arranged on the substrate by operating the mounting rod.

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