A magnetic suspension stator detection device

Abstract

The present application relates to the field of magnetic levitation, and specifically discloses a magnetic levitation stator detection device, wherein the magnetic levitation stator has a conductive shaft and an insulating ring, the insulating ring surrounds the outer circumference of the conductive shaft, and one end of the conductive shaft has a lead wire; the detection device is characterized in that it includes a base for carrying the magnetic levitation stator, the base has a first cavity, the first cavity is used to cooperate with the magnetic levitation stator, wherein the first cavity has a step surface, when the magnetic levitation stator is arranged in the first cavity, the step surface contacts the end surface of the insulating ring body close to the lead wire, and the end surface of the conductive shaft away from the lead wire and the end surface of the insulating ring body away from the lead wire are exposed outside the first cavity. The solution of the present application overcomes the phenomenon that the inductance of the stator assembly is difficult to detect and easy to be misdetected, and achieves a high-efficiency and high-accuracy detection effect.

Description

Technical Field

[0001] The present application relates to the technical field of magnetic levitation, and in particular to a magnetic levitation stator detection device. Background Art

[0002] The magnetic suspension radial stator assembly is an important component of inertial instruments such as gyroscopes and accelerometers, and is an important component in the guidance and control systems of missiles, launch vehicles and other spacecraft. It is a device used to establish the orientation and attitude reference of the aircraft and to measure the angle, angular velocity, speed and acceleration of the aircraft relative to the inertial space motion.

[0003] In the production of magnetic suspension stator components, the distance from the non-outlet end rubber surface of the magnetic suspension stator component to the stator core is Solid core inductance L≥6mH, the difference in inductance between coil a (red), e (black) and coil c (yellow), e (black), and between coil b (white), e (black) and coil d (blue), e (black) is less than 2%. The dimensional accuracy of the magnetic levitation stator assembly and the stability and reliability of the inductance range are one of the factors to ensure the reliability of the magnetic levitation stator assembly. Exceeding the accuracy range will affect the centering accuracy of the output shaft of the three-floating inertial instrument, and even cause the three-floating inertial instrument to fail to start or get stuck.

[0004] During the inspection of the magnetic levitation stator assembly, the inspectors use digital calipers and manual positioning, which is prone to inspection errors and consumes a lot of work time. At the same time, if the stator lead wire is bent too many times during the inspection, it may break. During the inspection of the inductance value, the electrical performance is greatly affected by the environment, and the inspection personnel's improper operation is prone to misdetection. Summary of the invention

[0005] The present application provides a magnetic levitation stator detection device, the purpose of which is to overcome the phenomenon that the inductance of the stator component is difficult to detect and easy to misdetect, and achieve a high-efficiency and high-accuracy detection effect.

[0006] In a first aspect, a detection device for a magnetic levitation stator is provided, wherein the magnetic levitation stator has a conductive shaft and an insulating ring, wherein the insulating ring surrounds the outer circumference of the conductive shaft, and one end of the conductive shaft has a lead wire; the detection device includes a base for supporting the magnetic levitation stator, wherein the base has a first cavity, and the first cavity is used to cooperate with the magnetic levitation stator, wherein the first cavity has a step surface, and when the magnetic levitation stator is arranged in the first cavity, the step surface contacts with an end surface of the insulating ring body close to the lead wire, and the end surface of the conductive shaft away from the lead wire and the end surface of the insulating ring body away from the lead wire are exposed outside the first cavity.

[0007] The prior art uses a digital caliper to inspect the size, and the inspector manually positions it, which is prone to detection errors and consumes a lot of work time. Compared with the prior art, the solution provided by this application includes at least the following beneficial technical effects: shortening the detection time and reducing the possibility of false detection. Practice has proved that this method meets the inspection accuracy requirements, is highly efficient, easy to operate, and is easy to be widely used in practical work.

[0008] In combination with the first aspect, in some implementations of the first aspect, the base further has a wire accommodating groove, which is communicated with the first cavity and is used to accommodate lead wires of the magnetic suspension stator.

[0009] During measurement, the lead wire is placed in the wire trough, which effectively avoids the possibility of the lead wire being broken.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the detection device also includes a detection table, the base is arranged on the table, and the flatness of the end surface of the base in contact with the table is greater than the flatness of the end surface of the base away from the table.

[0011] The flatness of the end surface of the base in contact with the table top is relatively high, which is beneficial to improving the dimensional detection accuracy.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the detection device also includes a height gauge, which is used to detect the height difference between the end surface of the conductive shaft away from the lead wire and the end surface of the insulating ring body away from the lead wire.

[0013] Using a height gauge and a base to detect height differences helps shorten detection time and reduce the possibility of false detection.

[0014] In combination with the first aspect, in some implementations of the first aspect, the base further has a second cavity, the second cavity is located on a side of the base away from the first cavity, the second cavity is used to accommodate an end of the conductive shaft away from the lead wire, and when the magnetic suspension stator is disposed in the second cavity, an end surface of the insulating ring body away from the lead wire is disposed on an end surface of the base close to the second cavity;

[0015] The detection device also has an insulating mounting block, which is used to abut against the magnetic suspension stator and be fixed to the end surface of the base.

[0016] The detection device simulates the use status of the magnetic suspension stator to ensure the accuracy of the detection results. The detection device has an insulating mounting block to ensure that the magnetic suspension stator is fixed more firmly. The operation difficulty is reduced and the detection efficiency is improved.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the insulating mounting block has a mounting base and a protrusion, the mounting base is used to abut against the insulating ring body, and the protrusion is used to abut against one end of the conductive shaft body close to the lead wire.

[0018] The portion of the magnetic suspension stator exposed outside the cavity can abut against the insulating mounting block, which is beneficial to enhancing the radial restraining effect of the insulating mounting block on the magnetic suspension stator.

[0019] In combination with the first aspect, in certain implementations of the first aspect, the insulating mounting block has a first threaded hole, and a second threaded hole opposite to the first threaded hole is arranged on the end surface of the base, and the insulating mounting block locks the first threaded hole and the second threaded hole by a threaded fastener.

[0020] In addition to having relatively good fastening performance, the threaded fastening method is also convenient for assembly and disassembly. For magnetic levitation stators of different structures, by selecting an appropriate insulating mounting block, the detection device provided in the embodiment of the present application has universal applicability. In addition, after multiple tests, the insulating mounting block may be worn, and the threaded fastening method can facilitate the replacement of the insulating mounting block.

[0021] In combination with the first aspect, in some implementations of the first aspect, the detection device further includes an inductance detection module, which is used to be electrically connected to the lead wires of the magnetic levitation stator, and the inductance detection module is used to perform inductance detection of the magnetic levitation stator.

[0022] Using an inductive detection module and a base to detect height differences helps shorten detection time and reduce the possibility of false detection.

[0023] In a second aspect, a detection device for a magnetic suspension stator is provided, wherein the magnetic suspension stator comprises a conductive shaft and an insulating ring, wherein the insulating ring surrounds the outer circumference of the conductive shaft, and one end of the conductive shaft has a lead wire; the detection device comprises a base for carrying the magnetic suspension stator, wherein the base has a second cavity, wherein the second cavity is used to accommodate an end of the conductive shaft away from the lead wire, and when the magnetic suspension stator is disposed in the second cavity, an end face of the insulating ring away from the lead wire is disposed on an end face of the base of the base close to the second cavity;

[0024] The detection device also has an insulating mounting block, which is used to abut against the magnetic suspension stator and be fixed to the end surface of the base.

[0025] The detection device simulates the use status of the magnetic suspension stator to ensure the accuracy of the detection results. The detection device has an insulating mounting block to ensure that the magnetic suspension stator is fixed more firmly. The operation difficulty is reduced and the detection efficiency is improved.

[0026] In combination with the second aspect, in certain implementations of the second aspect, the insulating mounting block has a mounting base and a protrusion, the mounting base is used to abut against the insulating ring body, and the protrusion is used to abut against one end of the conductive shaft body close to the lead wire.

[0027] The portion of the magnetic suspension stator exposed outside the cavity can abut against the insulating mounting block, which is beneficial to enhancing the radial restraining effect of the insulating mounting block on the magnetic suspension stator.

[0028] In combination with the second aspect, in certain implementations of the second aspect, the insulating mounting block has a first threaded hole, and a second threaded hole opposite to the first threaded hole is arranged on the end surface of the base, and the insulating mounting block locks the first threaded hole and the second threaded hole by a threaded fastener.

[0029] In addition to having relatively good fastening performance, the threaded fastening method is also convenient for assembly and disassembly. For magnetic levitation stators of different structures, by selecting an appropriate insulating mounting block, the detection device provided in the embodiment of the present application has universal applicability. In addition, after multiple tests, the insulating mounting block may be worn, and the threaded fastening method can facilitate the replacement of the insulating mounting block.

[0030] Using an inductive detection module and a base to detect height differences helps shorten detection time and reduce the possibility of false detection.

[0031] In combination with the second aspect, in some implementations of the second aspect, the detection device further includes an inductance detection module, which is used to be electrically connected to the lead wires of the magnetic levitation stator, and the inductance detection module is used to perform inductance detection of the magnetic levitation stator.

[0032] In combination with the second aspect, in certain implementations of the second aspect, the detection device also includes a detection table, the base is arranged on the table, and the flatness of the end surface of the base in contact with the table is greater than the flatness of the end surface of the base away from the table.

[0033] The flatness of the end surface of the base in contact with the table top is relatively high, which is beneficial to improving the dimensional detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The figure is a schematic structural diagram of a magnetic levitation stator.

[0035] Figure 2 A schematic structural diagram of a magnetic levitation stator detection device provided in an embodiment of the present application.

[0036] Figure 3A schematic structural diagram of a magnetic levitation stator detection device provided in an embodiment of the present application.

[0037] Figure 4 A schematic structural diagram of a magnetic levitation stator detection device provided in an embodiment of the present application.

[0038] Figure 5 A schematic structural diagram of a magnetic levitation stator detection device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Figure 1 It is a schematic structural diagram of a magnetic levitation stator.

[0041] The magnetic suspension stator 100 has a conductive shaft 110 and an insulating ring 120. The insulating ring 120 surrounds the outer circumference of the conductive shaft 110, and the insulating ring 120 can be arranged corresponding to the middle of the conductive shaft 110. One end of the conductive shaft 110 has a lead wire 130. The lead wire 130 can correspond to coil a (red), e (black), coil c (yellow), coil b (white), and coil d (blue).

[0042] Figure 2 It is a schematic structural diagram of a magnetic levitation stator detection device provided in an embodiment of the present application.

[0043] The detection device 200 includes a base 210 for supporting the magnetic suspension stator 100. In some embodiments, the base 210 can be made of metal. The base 210 has a cavity 211, and the cavity 211 is used to cooperate with the magnetic suspension stator 100 to ensure the accuracy and efficiency of the measurement process. The cavity 211 and the magnetic suspension stator 100 can be matched with a clearance fit, and the matching accuracy is 0.005mm. Figure 2 As shown, when the magnetic suspension stator 100 is disposed in the detection device 200 , the lead wire 130 of the magnetic suspension stator 100 may be directed toward the cavity 211 of the detection device 200 , so that the magnetic suspension stator 100 may gradually extend into the cavity 211 .

[0044] The cavity 211 has a step surface 212. When the magnetic suspension stator 100 is disposed in the cavity 211, the step surface 212 contacts the end surface 121 of the insulating ring body 120 close to the lead wire 130, and the end surface 111 of the conductive shaft body 110 away from the lead wire 130 and the end surface 122 of the insulating ring body 120 away from the lead wire 130 are exposed outside the cavity 211.

[0045] In some embodiments, the base 210 further has a wire accommodating groove 213, which is connected to the cavity 211 and is used to accommodate the lead wire 130 of the magnetic suspension stator 100, so that the lead wire 130 can extend out of the base 210 from the wire accommodating groove 213. During measurement, the lead wire 130 is placed in the wire accommodating groove 213, which effectively avoids the possibility of the lead wire 130 being broken.

[0046] In a possible scenario, the detection device 200 can be used to detect the height difference between the end face 111 of the conductive shaft body 110 away from the lead wire 130 and the end face 122 of the insulating ring body 120 away from the lead wire 130. The detection device 200 also includes a height gauge. During height detection, the height gauge can measure the relative heights of the end face 111 and the end face 122 in turn, and the height difference between the end face 111 and the end face 122 can be obtained by subtracting the relative height of the end face 111 and the end face 122 from the relative height of the end face 122.

[0047] To achieve higher dimensional detection accuracy, the detection device 200 further includes a detection table, on which the base 210 is disposed, and the flatness of the end face 214 of the base 210 in contact with the table is greater than the flatness of the end face 215 of the base 210 away from the table.

[0048] Figure 3 It is a schematic structural diagram of another magnetic levitation stator detection device provided in an embodiment of the present application.

[0049] The detection device 200 includes a base 210 for carrying the magnetic suspension stator 100. The base 210 has a cavity 220. The cavity 220 is used to accommodate an end of the conductive shaft 110 away from the lead wire 130. Figure 3 As shown, when the magnetic suspension stator 100 is arranged in the detection device 200, the lead wire 130 of the magnetic suspension stator 100 can be away from the cavity 220 of the detection device 200, so that the magnetic suspension stator 100 can gradually extend into the cavity 211. When the magnetic suspension stator 100 is arranged in the cavity 220, the end surface 122 of the insulating ring body 120 away from the lead wire 130 is arranged on the base end surface 221 of the base 210 close to the cavity 220.

[0050] The detection device 200 also has an insulating mounting block 300, which is used to abut against the magnetic suspension stator 100 and is fixed to the base end surface 221. In some embodiments, the base 210 can be made of metal material, and the insulating mounting block 300 can be made of polytetrafluoroethylene material. In this way, the use state of the magnetic suspension stator 100 can be simulated. The magnetic suspension stator 100 is radially supported by the polytetrafluoroethylene insulating mounting block 300, that is, the state in which the inductance of the stator assembly may (or is most likely) exceed the tolerance when the stator assembly is working is simulated.

[0051] like Figure 3As shown, the structure of the portion of the insulating mounting block 300 that abuts against the magnetic levitation stator 100 can match the structure of the magnetic levitation stator 100, thereby facilitating increasing the contact area between the insulating mounting block 300 and the magnetic levitation stator 100 and enhancing the radial constraint effect of the insulating mounting block 300 on the magnetic levitation stator 100.

[0052] In some embodiments, in combination Figure 1 and Figure 3 The insulating mounting block 300 has a mounting base 310 and a protrusion 320. The mounting base 310 is used to abut against the insulating ring body 120, and the protrusion 320 is used to abut against the end of the conductive shaft body 110 away from the lead wire 130. The portion of the magnetic suspension stator 100 exposed outside the cavity 220 can abut against the insulating mounting block 300, which is conducive to improving the radial constraint effect of the insulating mounting block 300 on the magnetic suspension stator 100.

[0053] The insulating mounting block 300 can be fixed to the base 210 by, for example, threaded fastening. Figure 3 As shown, the insulating mounting block 300 has a threaded hole 330, and a threaded hole 222 opposite to the threaded hole 330 is provided on the end surface 221 of the base. The insulating mounting block 300 locks the threaded hole 330 and the threaded hole 222 through a threaded fastener 340. In addition to having relatively superior fastening performance, the threaded fastening method is also convenient for disassembly and assembly. For magnetic levitation stators 100 with different structures, by selecting an adapted insulating mounting block 300, the detection device 200 provided in the embodiment of the present application has universal applicability. In addition, after multiple tests, the insulating mounting block 300 may be worn, and the threaded fastening method can facilitate the replacement of the insulating mounting block 300.

[0054] Figure 3 The detection device 200 shown can be used to perform inductance detection of the magnetic suspension stator 100. In some embodiments, the detection device 200 further includes an inductance detection module, which is electrically connected to the lead wire 130 of the magnetic suspension stator 100 to perform inductance detection of the magnetic suspension stator 100.

[0055] To achieve higher dimensional detection accuracy, the detection device 200 further includes a detection table, on which the base 210 is disposed, and the flatness of the end face 214 of the base 210 in contact with the table is greater than the flatness of the end face 215 of the base 210 away from the table.

[0056] Figure 4 and Figure 5 It is a schematic structural diagram of another magnetic levitation stator detection device provided in an embodiment of the present application.

[0057] Figure 4 and Figure 5The detection device shown has a base 210 for supporting the magnetic suspension stator 100. The base 210 has Figure 2 The cavity 211 and the wire groove 213 are shown, and the cavity 211 and the wire groove 213 are located at the first end of the base 210; the base 210 also has Figure 3 The cavity 220 is located at the second end of the base 210, and the base 210 can also be used with Figure 3 The insulating mounting blocks 300 shown are mounted together. That is, Figure 4 and Figure 5 The detection device 200 shown will Figure 2 The detection device 200 and Figure 3 The detection device 200 shown in the figure is a combination of two Figure 2 and Figure 3 The functionality of the detection device 200 is shown.

[0058] Two detection devices 200 (respectively as Figure 2 and Figure 3 ) and a detection device 200 (as shown in FIG. Figure 4 or Figure 5 Compared with the above, after using the two-in-one detection device 200 to measure inductance, the insulating mounting block 300 needs to be disassembled, which increases the number of disassembly and assembly steps in the detection process and reduces the detection efficiency. In addition, the flatness requirement of the end face of the detection device 200 facing the table is relatively high, and the end face of the detection device 200 in contact with the magnetic levitation stator 100 is easily worn by the magnetic levitation stator 100. After long-term use, the end faces on both sides of the two-in-one detection device 200 need to be refined, which increases the difficulty and workload of the refinement.

[0059] Although the present invention is disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims of the present invention.

Claims

1. A detection device (200) for a magnetic suspension stator (100), the magnetic suspension stator (100) comprising a conductive shaft (110) and an insulating ring (120), the insulating ring (120) surrounding the outer circumference of the conductive shaft (110), and one end of the conductive shaft (110) comprising a lead wire (130); It is characterized in that The detection device (200) comprises a base (210) for carrying the magnetic suspension stator (100), and also comprises an insulating mounting block (300), a height gauge and an inductance detection module; The base (210) has a first cavity (211) and a second cavity (220), wherein the first cavity (211) is located at a first end of the base (210), and the second cavity (220) is located at a second end of the base (210); The first cavity (211) is used to cooperate with the magnetic suspension stator (100), wherein the first cavity (211) has a step surface (212), and when the magnetic suspension stator (100) is arranged in the first cavity (211), the lead wire (130) of the magnetic suspension stator (100) faces the first cavity (211), and the step surface (212) contacts the end surface (121) of the insulating ring body (120) close to the lead wire (130). , an end surface (111) of the conductive shaft body (110) away from the lead wire (130) and an end surface (122) of the insulating ring body (120) away from the lead wire (130) are exposed outside the first cavity (211); the height gauge is used to detect the height difference between the end surface (111) of the conductive shaft body (110) away from the lead wire (130) and the end surface (122) of the insulating ring body (120) away from the lead wire (130); The second cavity (220) is used to accommodate an end of the conductive shaft (110) away from the lead wire (130); when the magnetic suspension stator (100) is arranged in the second cavity (220), the end surface (122) of the insulating ring body (120) away from the lead wire (130) is arranged on a base end surface (221) of the base (210) close to the second cavity (220); the insulating mounting block (300) is fixed on the base end surface (221), and the insulating mounting block (300) abuts against the magnetic suspension stator (100) to align the magnetic suspension stator (100). The insulating mounting block (300) plays a radial constraint role, simulating the state of inductance out-of-tolerance when the magnetic suspension stator (100) is working, wherein the insulating mounting block (300) has a mounting base (310) and a protrusion (320), the mounting base (310) is used to abut against the insulating ring body (120), and the protrusion (320) is used to abut against one end of the conductive shaft body (110) having the lead wire (130); the inductance detection module is used to be electrically connected to the lead wire (130) of the magnetic suspension stator (100), and the inductance detection module is used to perform inductance detection of the magnetic suspension stator (100).

2. The detection device (200) according to claim 1, characterized in that: The base (210) further comprises a wire accommodating groove (213), wherein the wire accommodating groove (213) is connected to the first cavity (211) and is used for accommodating the lead wire (130) of the magnetic suspension stator (100).

3. The detection device (200) according to claim 1, characterized in that: The detection device (200) further comprises a detection table, the base (210) is arranged on the table, and the flatness of an end surface (214) of the base (210) in contact with the table is greater than the flatness of an end surface (215) of the base (210) away from the table.

4. The detection device (200) according to claim 1, characterized in that: The insulating mounting block (300) has a first threaded hole (330), and the base end surface (221) is provided with a second threaded hole (222) opposite to the first threaded hole (330). The insulating mounting block (300) locks the first threaded hole (330) and the second threaded hole (222) by means of a threaded fastener (340).

5. A detection device (200) for a magnetic suspension stator (100), the magnetic suspension stator (100) comprising a conductive shaft (110) and an insulating ring (120), the insulating ring (120) surrounding the outer circumference of the conductive shaft (110), and one end of the conductive shaft (110) comprising a lead wire (130); It is characterized in that The detection device (200) comprises a base (210) for carrying the magnetic suspension stator (100), and also comprises an insulating mounting block (300) and an inductance detection module; The base (210) has a second cavity (220), the second cavity (220) being used to accommodate an end of the conductive shaft (110) away from the lead wire (130); when the magnetic suspension stator (100) is arranged in the second cavity (220), an end surface (122) of the insulating ring body (120) away from the lead wire (130) is arranged on a base end surface (221) of the base (210) close to the second cavity (220); the insulating mounting block (300) is fixed on the base end surface (221), and the insulating mounting block (300) abuts against the magnetic suspension stator (100). The invention relates to a magnetic suspension stator (100) for radially constraining the magnetic suspension stator (100) and simulating a state in which the inductance of the magnetic suspension stator (100) is out of tolerance when the magnetic suspension stator (100) is working, wherein the insulating mounting block (300) comprises a mounting base (310) and a protrusion (320), wherein the mounting base (310) is used to abut against the insulating ring body (120), and the protrusion (320) is used to abut against one end of the conductive shaft body (110) having the lead wire (130); the inductance detection module is used to be electrically connected to the lead wire (130) of the magnetic suspension stator (100), and the inductance detection module is used to perform inductance detection of the magnetic suspension stator (100).

6. The detection device (200) according to claim 5, characterized in that: The insulating mounting block (300) has a first threaded hole (330), and the base end surface (221) is provided with a second threaded hole (222) opposite to the first threaded hole (330). The insulating mounting block (300) locks the first threaded hole (330) and the second threaded hole (222) by means of a threaded fastener (340).

7. The detection device (200) according to claim 5, characterized in that: The detection device (200) further comprises a detection table, the base (210) is arranged on the table, and the flatness of the end surface of the base (210) in contact with the table is greater than the flatness of the end surface (221) of the base (210) away from the table.

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