Device and method for detecting the conductivity consistency of rolling elements in a rotating conductive device

Abstract

The present invention relates to a device and method for detecting the consistency of the conductivity of a rolling body in a rotating conductive device, and belongs to the technical field of detecting a rotating conductive device. The detection device includes an inner ring and an outer ring, both of which are provided with raceways, and the inner ring or / and the outer ring include at least two conductive segments and at least two insulating segments, and the conductive segments and the insulating segments are arranged alternately along the circumferential direction; the detection device also includes a detection circuit connected to the inner ring or the conductive segment on the inner ring at one end and connected to the outer ring or the conductive segment on the outer ring at the other end, and a power supply and a measuring instrument are provided on the detection circuit; a connecting structure is provided on the inner ring, so that the rotating shaft drives the inner ring to rotate, so that the rolling body rolls in contact with different conductive segments, so that the detection circuit is turned on and the electrical performance of the detection circuit is measured by the measuring instrument. The present invention simulates the real operating environment of the rolling body, and can obtain the dynamic electrical contact performance of the rolling body. By comparing the differences in the electrical performance corresponding to each rolling body, the consistency of the conductive capacity of the rolling body can be judged.

Description

Technical Field

[0001] The invention relates to a device and a method for detecting the conductivity consistency of a rolling body in a rotating conductive device, and belongs to the technical field of detecting rotating conductive devices. Background Art

[0002] The rolling slip ring is a new type of rotating conductive joint with the advantages of low friction coefficient, low wear rate, and low electrical noise. The rolling slip ring is a "single point failure" device that realizes the transmission of electrical signals and power between relatively rotating mechanisms. It is currently widely used in high-end equipment such as spacecraft, wind power, and radar.

[0003] For example, a Chinese invention patent application with application publication number CN112928568A discloses a rotating conductive device, including a housing, a central axis and a multi-layer rolling conductive unit, each layer of the rolling conductive unit includes an outer conductive ring (i.e., an outer ring), an inner conductive ring (i.e., an inner ring) and a plurality of elastic rolling rings (i.e., rolling bodies) distributed along the circumference of the inner ring, the inner ring and the outer ring are coaxially spaced, and raceways are provided on the inner circumference of the outer ring and the outer circumference of the inner ring, respectively, and the rolling bodies are pressed and clamped in the raceways of the inner ring and the outer ring, and roll with the inner and outer rings when the inner and outer rings rotate relative to each other. At the same time, the rolling bodies will deform when they are elastically pressed with the inner and outer rings, so that the rolling bodies apply a certain preload force to the inner and outer rings to ensure effective conductive contact.

[0004] There are many rotating conductive devices like slip rings. In actual production, due to factors such as processing errors, assembly errors, storage conditions, etc., it is inevitable that the performance of each rolling element will be more or less different. If this difference is large, other rolling elements in the rotating conductive device will bear more burdens, which will damage the entire system. Therefore, in order to ensure the reasonable design and high-reliability operation of other rotating conductive devices such as rolling slip rings, the conductivity consistency and other performance of individual rolling elements in the rotating conductive device must be tested.

[0005] At present, although the static test method can conveniently reflect the resistance of the rolling element, the rolling element is in a rolling motion state during service, and the static electrical contact performance cannot replace the dynamic electrical contact performance. Therefore, it is necessary to design a rolling element conductivity consistency detection device and detection method to detect the consistency of the conductivity of each rolling element in the rotating conductive device. Summary of the invention

[0006] The purpose of the present invention is to provide a device for detecting the conductivity consistency of rolling elements in a rotating conductive device, so as to solve the problem in the prior art that the dynamic electrical contact performance of rolling elements cannot be detected and thus the conductivity consistency of rolling elements cannot be determined; the purpose of the present invention is also to provide a method for detecting the conductivity consistency of rolling elements in a rotating conductive device, so as to solve the above-mentioned problem.

[0007] In order to achieve the above-mentioned purpose, the device for detecting the conductivity consistency of rolling elements in the rotating conductive device of the present invention adopts the following technical scheme:

[0008] A device for detecting the consistency of the conductivity of rolling elements in a rotating conductive device, the detection device comprising an inner ring and an outer ring coaxially arranged outside the inner ring, raceways for cooperating with the installation of rolling elements are arranged on the outer circumferential surface of the inner ring and the inner circumferential surface of the outer ring, the inner ring and / or the outer ring comprising at least two conductive segments and at least two insulating segments, the conductive segments and the insulating segments being alternately arranged along the circumferential direction; the detection device further comprising a detection circuit having one end connected to the inner ring or the conductive segments on the inner ring and the other end connected to the outer ring or the conductive segments on the outer ring, the detection circuit being provided with a power supply and a measuring instrument for measuring the electrical performance of the detection circuit; the inner ring being provided with a connecting structure for transmission connection with a rotating shaft, so that the rotating shaft drives the inner ring to rotate, thereby causing the rolling elements to roll in contact with different conductive segments, causing the detection circuit to be conductive and the measuring instrument to measure the electrical performance of the detection circuit.

[0009] The beneficial effects of the above technical solution are: the detection device includes an inner ring and an outer ring, and both the inner ring and the outer ring are provided with raceways, on which the rolling body to be tested can be installed, simulating the actual installation environment of the rolling body; at least one of the inner ring and the outer ring includes a plurality of conductive segments and a plurality of insulating segments, the conductive segments and the insulating segments are alternately arranged along the circumferential direction, and one end of the detection loop is connected to the inner ring or the conductive segment on the inner ring, and the other end is connected to the outer ring or the conductive segment on the outer ring, and at the same time, a connection structure for transmission connection with a rotating shaft is provided on the inner ring, and the rotating shaft can drive the inner ring to rotate, thereby driving the rolling body to move, and when the rolling body moves to the conductive segment connected to the conductive segment, the inner ring is connected to the conductive segment on the outer ring. When the detection circuit moves to the area corresponding to the electrical segment, the detection circuit will be conductive, and when it moves to the area corresponding to the insulating segment, the detection circuit is not conductive; the detection circuit is provided with a power supply and a measuring instrument for measuring the electrical performance of the detection circuit, so that each time the detection circuit is conductive, the measuring instrument can measure the electrical performance of the detection circuit, and the electrical performance reflects the dynamic electrical contact performance of the rolling element. Finally, by comparing the differences in the electrical performances corresponding to multiple rolling elements to be tested, if the difference of a certain rolling element exceeds the allowable value, the consistency of the conductivity of the rolling element is poor, thereby completing the test of the consistency of the conductivity of the rolling element.

[0010] The detection device provided by the present invention simulates the actual operating environment of the rolling body. By setting at least one of the inner ring and the outer ring to include multiple conductive segments and multiple insulating segments and connecting the detection circuit, the electrical performance of the detection circuit after each conduction can be measured, thereby obtaining the dynamic electrical contact performance of the rolling body. By comparing the differences in the electrical performance corresponding to each rolling body, the consistency of the conductive capacity of the rolling body is judged. According to the judgment result, the rolling body with poor consistency can be eliminated to ensure the consistency of the conductive capacity of each serving rolling body, thereby ensuring the high reliability operation of the rotating conductive device.

[0011] Furthermore, the conductive segment and the insulating segment are separate parts and are fixed together to form a complete ring.

[0012] The beneficial effect of the above technical solution is that: since the conductive segment and the insulating segment are separate parts, the conductive segment and the insulating segment can be prepared separately and then formed into a complete ring by splicing and fixing, which is convenient for manufacturing.

[0013] Furthermore, the interior of the insulating section is made of conductive material, and the exterior is entirely wrapped with insulating material.

[0014] The beneficial effect of the above technical solution is that the conductive segment and the insulating segment can be made of raw materials of the same specification, the raw materials are conductive materials, and then the insulating material is wrapped as a whole outside the conductive material to form the insulating segment, which facilitates the preparation of the conductive segment and the insulating segment.

[0015] Furthermore, when preparing the conductive segment and the insulating segment, an integrated conductive ring is cut into multiple segments, half of which directly forms the conductive segment, and the other half is wrapped with insulating material as a whole to form the insulating segment.

[0016] The beneficial effect of the above technical solution is that: a conductive ring is first cut into multiple sections, half of which are wrapped with insulating material as a whole to form an insulating section, and the rest are directly formed into a conductive section. In this way, when splicing, it is convenient to form a relatively round ring, thereby ensuring the movement characteristics of the rolling body and facilitating the measurement of electrical properties.

[0017] Furthermore, when preparing the conductive segments and the insulating segments, conductive material is sprayed at intervals outside an integrated insulating ring to form the conductive segments, and the remaining parts form the insulating segments.

[0018] The beneficial effect of the above technical solution is that: an integrated insulating ring does not need to be cut, the conductive material is sprayed at intervals on the outside to form a conductive segment, and the remaining part forms an insulating segment, which is relatively convenient to prepare.

[0019] Furthermore, one of the inner ring and the outer ring includes the conductive segment and the insulating segment, and the other is a conductive ring that is conductive as a whole. The detection circuit includes a plurality of branches connected in series corresponding to each conductive segment, each branch is connected in parallel and each branch is provided with the measuring instrument. There is only one power supply, and each branch and the conductive ring are respectively connected to both ends of the power supply.

[0020] The beneficial effect of the above technical solution is that one of the inner ring and the outer ring is a conductive ring that is conductive as a whole, and the other includes a conductive segment and an insulating segment. Multiple branches in the detection circuit are connected in series with each conductive segment, and at the same time, the branches are connected in parallel. Each branch and the conductive ring are respectively connected to the two ends of the power supply. In this way, only one power supply is set, and the overall structure of the detection circuit is relatively simple, which can reduce costs and facilitate layout.

[0021] Furthermore, the detection device comprises the rotating shaft, which is a rotating shaft that can rotate forwards and backwards, so that the rolling body rotates forwards and backwards once on each conductive segment and then moves to the next conductive segment.

[0022] The beneficial effect of the above technical solution is that the rotating shaft can drive the inner ring to rotate forward and reverse, thereby causing the rolling body to rotate forward and reverse once on each conductive segment before moving to the next conductive segment. In this way, the electrical performance data detected is richer and more accurate, which is conducive to improving the accuracy of judging the consistency of conductivity.

[0023] To achieve the above purpose, the method for detecting the conductivity consistency of rolling elements in a rotating conductive device of the present invention adopts the following technical solution:

[0024] A method for detecting the consistency of the conductivity of rolling elements in a rotating conductive device, the method comprising: installing the rolling element to be tested between the raceways of an inner ring and an outer ring, wherein the inner ring or / and the outer ring comprises at least two conductive segments and at least two insulating segments, and the conductive segments and the insulating segments are alternately arranged along the circumferential direction; the method further comprises connecting a detection circuit on the inner ring or the conductive segment of the inner ring and on the conductive segment of the outer ring or the outer ring, wherein the detection circuit is provided with a power supply and a measuring instrument for measuring the electrical performance of the detection circuit; during the test, the connection structure on the inner ring is connected to the rotating shaft for transmission, so that the rotating shaft drives the inner ring to rotate, thereby making the rolling element rollingly contact with different conductive segments, so that the detection circuit is turned on and the electrical performance of the detection circuit is measured by the measuring instrument, and the differences in the corresponding electrical performances of multiple rolling elements to be tested are compared. If the difference of a certain rolling element exceeds the allowable value, the consistency of the conductivity of the rolling element is poor.

[0025] The beneficial effects of the above technical solution are: the rolling body is installed between the raceways of the inner ring and the outer ring, simulating the actual installation environment of the rolling body; at least one of the inner ring and the outer ring includes multiple conductive segments and multiple insulating segments, so the detection circuit will only be turned on when the rolling body moves to the area corresponding to the conductive segment, and when it moves to the area corresponding to the insulating segment, the detection circuit is not turned on; because the detection circuit is provided with a power supply and a measuring instrument for measuring the electrical performance of the detection circuit, during the test, the rotating shaft drives the inner ring to rotate, and the rolling body rolls in contact with different conductive segments. Each time the detection circuit is turned on, the measuring instrument can measure the electrical performance of the detection circuit, and the electrical performance reflects the dynamic electrical contact performance of the rolling body. Finally, by comparing the differences in the electrical performance corresponding to multiple rolling bodies to be tested, if the difference of a certain rolling body exceeds the allowable value, the consistency of the conductivity of the rolling body is poor, thereby completing the test of the consistency of the conductivity of the rolling body.

[0026] The detection method provided by the present invention first simulates the actual operating environment of the rolling body. By setting at least one of the inner ring and the outer ring to include multiple conductive segments and multiple insulating segments and connecting the detection circuit, the electrical performance of the detection circuit after each conduction can be measured, thereby obtaining the dynamic electrical contact performance of the rolling body. By comparing the differences in the electrical performance corresponding to each rolling body, the consistency of the conductive capacity of the rolling body is judged. According to the judgment result, the rolling body with poor consistency can be eliminated to ensure the consistency of the conductive capacity of each serving rolling body, thereby ensuring the high reliability operation of the rotating conductive device.

[0027] Furthermore, the inner ring is controlled to rotate forward and reversely by the rotating shaft, so that the rolling body rotates forward and reversely once on each conductive segment, and then moves to the next conductive segment.

[0028] The beneficial effect of the above technical solution is that the detected electrical performance data is richer and more accurate, which is conducive to improving the accuracy of judging the consistency of conductivity.

[0029] Furthermore, the average value of the electrical performance measured by the measuring instrument when each rolling element is in contact with all the conductive segments is calculated, and the consistency of the conductive ability of the rolling element is judged by the difference in the average performance.

[0030] The beneficial effect of the above technical solution is that by calculating the mean and utilizing the difference in average performance to judge the consistency of the rolling element's conductivity, the error caused by inconsistent conductivity of the raceway conductive area and inconsistent circuit conductivity can be reduced, thereby improving the accuracy of judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a top view schematic diagram of the detection device of the present invention;

[0032] Figure 2It is the main view principle diagram of the detection device of the present invention;

[0033] In the figure: 1. first conductive segment; 2. second conductive segment; 3. third conductive segment; 4. fourth conductive segment; 5. fifth conductive segment; 6. inner ring; 7. insulating segment; 8. power supply; 9. mercury slip ring; 11. first rolling element; 12. second rolling element; 13. third rolling element; 14. fourth rolling element; 15. fifth rolling element; 21. first branch; 22. second branch; 23. third branch; 24. fourth branch; 25. fifth branch; 31. first ammeter; 32. second ammeter; 33. third ammeter; 34. fourth ammeter; 35. fifth ammeter. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0036] It should be noted that relational terms such as "first" and "second" that may appear are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by a sentence such as "comprises a..." does not exclude the existence of other identical elements in the process, method, article or device that includes the element.

[0037] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0038] An embodiment of a device for detecting the electrical conductivity consistency of rolling elements in a rotating conductive device of the present invention (hereinafter referred to as a detection device) is as follows:

[0039] like Figure 1 and Figure 2 As shown, the detection device includes an inner ring 6 and an outer ring coaxially arranged outside the inner ring 6, and an annular space for installing rolling bodies is formed between the inner ring 6 and the outer ring. In this embodiment, there are five rolling bodies to be tested, namely the first rolling body 11, the second rolling body 12, the third rolling body 13, the fourth rolling body 14 and the fifth rolling body 15, and there is no contact between the rolling bodies. And similar to the prior art, a raceway for cooperating with the installation of the rolling body is arranged on the outer circumference of the inner ring 6 and the inner circumference of the outer ring, that is, the rolling body contacts the inner and outer raceways, and the raceway is a V-shaped raceway, and the openings are all facing the annular space.

[0040] Furthermore, the inner ring 6 is an overall conductive ring, and the outer ring includes at least two conductive segments and at least two insulating segments 7. Corresponding to the number of rolling elements, there are five insulating segments 7 and five conductive segments in this embodiment, namely, a first conductive segment 1, a second conductive segment 2, a third conductive segment 3, a fourth conductive segment 4, and a fifth conductive segment 5, and each conductive segment and each insulating segment 7 are alternately arranged along the circumferential direction.

[0041] In this embodiment, each conductive segment and each insulating segment 7 is a separate piece and is fixed by splicing to form a complete circular ring. The fixing method can be welding or bonding. Specifically, when preparing the conductive segment and the insulating segment 7, an integrated conductive ring is cut into multiple segments, ten segments in this embodiment, half of which directly form the conductive segment, and the other half are wrapped with insulating material as a whole to form the insulating segment 7. Therefore, the interior of the insulating segment 7 is conductive material and the exterior is wrapped with insulating material. The specific implementation method can be pasting or winding an insulating tape, or spraying insulating paint.

[0042] The detection device also includes a detection circuit with one end connected to the inner ring 6 and the other end connected to the conductive segment on the outer ring. The detection circuit is provided with a power supply 8 and a measuring instrument for measuring the electrical performance of the detection circuit. Specifically in this embodiment, the detection circuit includes a plurality of branches connected in series with each conductive segment, so there are five branches, namely, a first branch 21 connected in series with the first conductive segment 1, a second branch 22 connected in series with the second conductive segment 2, a third branch 23 connected in series with the third conductive segment 3, a fourth branch 24 connected in series with the fourth conductive segment 4, and a fifth branch 25 connected in series with the fifth conductive segment 5. The five branches are connected in parallel. There is only one power supply 8, and each branch and the conductive ring (i.e., the inner ring 6) are connected to both ends of the power supply 8. Each branch is provided with a measuring instrument, for example, the first branch 21 is provided with a first ammeter 31 , the second branch 22 is provided with a second ammeter 32 , the third branch 23 is provided with a third ammeter 33 , the fourth branch 24 is provided with a fourth ammeter 34 , and the fifth branch 25 is provided with a fifth ammeter 35 .

[0043] In addition, the detection device also includes a rotating shaft (not shown in the figure), and the inner ring 6 is provided with a connection structure for transmission connection with the rotating shaft. The connection structure can be a keyway or a protrusion on the inner wall, which cooperates with the rotating shaft to stop the rotation, so that the rotating shaft drives the inner ring 6 to rotate, and then the rolling body rolls in contact with different conductive segments, so that the detection circuit is turned on and the electrical performance of the detection circuit is measured by the measuring instrument. In addition, the rotating shaft is a rotating shaft that can rotate forward and reverse, so that the rolling body rotates forward and reverse on each conductive segment and then turns to the next conductive segment. Of course, in order to facilitate the detection circuit to be turned on, the wire led out of the positive pole of the power supply 8 is connected to the inner ring 6 through the mercury slip ring 9.

[0044] The embodiment of the method for detecting the consistency of the conductive capacity of rolling elements in the rotating conductive device of the present invention (hereinafter referred to as the detection method) is as follows:

[0045] The embodiment of the detection method is also the method of using the above detection device. When the detection device is used, the resistance value of the inner ring 6 and each conductive segment is first measured to reduce the system error. Figure 1 and Figure 2 As shown, the rolling element to be tested is installed between the inner ring 6 and the raceway of the outer ring. A cage (refer to patent document CN112928568A) can be set between the inner ring 6 and the outer ring to fix the rolling element to keep it rolling back and forth smoothly. A detection circuit is connected to the inner ring 6 and the conductive segment of the outer ring. The detection circuit includes a power supply 8, the above five branches, and an ammeter set on each branch.

[0046] During the test, the connection structure on the inner ring 6 is used to connect with the rotating shaft, so that the rotating shaft drives the inner ring 6 to rotate forward and reverse, and then each rolling element first rotates forward and reverse in the corresponding conductive area, such as Figure 1 As shown, the first rolling element 11 is in the conductive interval where the first conductive segment 1 is located, the second rolling element 12 is in the conductive interval where the second conductive segment 2 is located, and so on. Record the current value according to the reading displayed by each ammeter, and then calculate the corresponding resistance R according to the total voltage U provided by the constant voltage source 11-1 , R 12-2 After the measurement is completed, all rolling elements are rotated clockwise to the next conductive interval, so that the first rolling element 11 is in the conductive interval where the second conductive segment 2 is located, and the second rolling element 12 is in the conductive interval where the third conductive segment 3 is located, and so on. The positive and negative rotations are performed again and the current value during the test is recorded to calculate the corresponding resistance R 11-2 , R 12-3 ..., and then repeat this process until each rolling element has been tested once in all conductive areas, and the average resistance value of each rolling element can be calculated: R n =(R 1n-1 +R 1n-2 +R 1n-3 +R1n-4 +R 1n-5 ) / 5, and average the recorded data to reduce the error caused by inconsistent conductivity of the conductive area of ​​the raceway and inconsistent conductivity of the line.

[0047] The average value R n It includes the average contact resistance of the rolling element and the average line resistance (conducting wire, outer ring conductive segment, inner ring, mercury slip ring). The average line resistance is a constant value. Compare the differences in the average resistance values ​​corresponding to multiple rolling elements to be tested. If the difference of a certain rolling element exceeds the allowable value, it can be considered that the rolling element has inconsistent conductivity, that is, the consistency of the rolling element's conductivity is poor.

[0048] In summary, the detection device and detection method provided by the present invention simulate the actual operating environment of the rolling body. By setting at least one of the inner ring and the outer ring to include multiple conductive segments and multiple insulating segments, and connecting the detection circuit, the electrical performance of the detection circuit after each conduction can be measured, thereby obtaining the dynamic electrical contact performance of the rolling body. By comparing the differences in the electrical performance corresponding to each rolling body, the consistency of the conductivity of the rolling body is judged. According to the judgment result, the rolling bodies with poor consistency can be eliminated to ensure the consistency of the conductivity of each serving rolling body, thereby ensuring the high reliability operation of the rotating conductive device.

[0049] In other embodiments of the detection method and the detection device: the measuring instrument may not be an ammeter, but a multimeter or an ohmmeter, which can measure resistance, that is, the measured electrical property of the detection circuit is resistance.

[0050] In other embodiments of the detection method and the detection device: the measured electrical performance may not be averaged, and all the measured data may be directly used for comparison.

[0051] In other embodiments of the detection method and the detection device: when the rotating shaft can rotate forward and reverse, it is not necessary to drive the rolling body to rotate forward and reverse once on each conductive segment and then move to the next conductive segment, but the rolling body can first rotate a full circle in one direction and then a full circle in the opposite direction; of course, the rotating shaft can also be unable to rotate forward and reverse and can only rotate in one direction. In this case, the rolling body also moves in one direction on each conductive segment.

[0052] In other embodiments of the detection method and the detection device: the inner ring can be configured to include at least two conductive segments and at least two insulating segments, and the conductive segments and the insulating segments are also alternately arranged along the circumferential direction, while the outer ring is an integrally conductive conductive ring. At this time, the detection circuit still includes multiple branches, each branch is connected in parallel and each branch is provided with a measuring instrument, and there is only one power supply, and each branch and the outer ring are respectively connected to the two ends of the power supply.

[0053] In other embodiments of the detection method and the detection device: Of course, the inner ring and the outer ring can also be configured to include at least two conductive segments and at least two insulating segments, and the conductive segments and the insulating segments are also arranged alternately along the circumferential direction. At this time, the detection circuit is turned on only when the rolling body moves to contact both the inner ring conductive segment and the outer ring conductive segment, and at this time there are multiple detection circuits, which are independent of each other, and each circuit is provided with a power supply and a measuring instrument, and one end of each circuit is connected to the inner ring conductive segment, and the other end is connected to the outer ring conductive segment.

[0054] In other embodiments of the detection method and the detection device: when preparing the conductive segment and the insulating segment, conductive material is sprayed at intervals on the outside of an integrated insulating ring to form the conductive segment, and the remaining part forms the insulating segment.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A device for detecting the conductivity consistency of rolling elements in a rotating conductive device, characterized in that: The detection device comprises an inner ring and an outer ring coaxially arranged outside the inner ring, a raceway for cooperating with the installation of a rolling body is arranged on the outer circumferential surface of the inner ring and the inner circumferential surface of the outer ring, the inner ring or / and the outer ring comprises at least two conductive segments and at least two insulating segments, the conductive segments and the insulating segments are alternately arranged along the circumferential direction, one of the inner ring and the outer ring comprises the conductive segments and the insulating segments, and the other is a conductive ring that is conductive as a whole; the detection device also comprises a detection circuit connected at one end to the inner ring or the conductive segments on the inner ring and at the other end to the outer ring or the conductive segments on the outer ring, the detection circuit comprises a plurality of branches connected in series corresponding to each conductive segment, each branch is connected in parallel, a power supply and a measuring instrument for measuring the electrical performance of each detection circuit are arranged on the detection circuit; a connection structure for transmission connection with a rotating shaft is arranged on the inner ring, so that the rotating shaft drives the inner ring to rotate, thereby making the rolling body roll in contact with different conductive segments, making the detection circuit conductive and the measuring instrument measuring the electrical performance of the detection circuit.

2. The device for detecting the conductivity consistency of rolling elements in a rotating conductive device according to claim 1, characterized in that: The conductive section and the insulating section are separate parts and are fixed by splicing to form a complete ring.

3. The device for detecting the conductivity consistency of rolling elements in a rotating conductive device according to claim 2, characterized in that: The interior of the insulating section is made of conductive material, and the exterior is entirely wrapped with insulating material.

4. The device for detecting the conductivity consistency of rolling elements in a rotating conductive device according to claim 3, characterized in that: When preparing the conductive segment and the insulating segment, an integrated conductive ring is cut into multiple segments, half of which directly forms the conductive segment, and the other half is wrapped with insulating material as a whole to form the insulating segment.

5. The device for detecting the conductivity consistency of rolling elements in a rotating conductive device according to claim 1, characterized in that: When preparing the conductive segment and the insulating segment, the conductive material is sprayed at intervals on the outside of an integrated insulating ring to form the conductive segment, and the remaining part forms the insulating segment.

6. The device for detecting the conductivity consistency of rolling elements in a rotating conductive device according to any one of claims 1 to 5, characterized in that: There is only one power source, and each branch and conductive ring are respectively connected to two ends of the power source.

7. The device for detecting the conductivity consistency of rolling elements in a rotating conductive device according to any one of claims 1 to 5, characterized in that: The detection device comprises the rotating shaft, which is a rotating shaft that can rotate forwards and backwards, so that the rolling body rotates forwards and backwards on each conductive segment and then moves to the next conductive segment.

8. A method for detecting the conductivity consistency of rolling elements in a rotating conductive device, using the device for detecting the conductivity consistency of rolling elements in a rotating conductive device according to any one of claims 1 to 7, characterized in that: The detection method includes installing the rolling body to be tested between the raceways of the inner ring and the outer ring, wherein the inner ring or / and the outer ring include at least two conductive segments and at least two insulating segments, and the conductive segments and the insulating segments are alternately arranged along the circumferential direction; the detection method also includes connecting a detection circuit on the inner ring or the conductive segment of the inner ring and on the conductive segment of the outer ring or the outer ring, and the detection circuit is provided with a power supply and a measuring instrument for measuring the electrical performance of the detection circuit; during the test, the connection structure on the inner ring is connected to the rotating shaft through transmission, so that the rotating shaft drives the inner ring to rotate, thereby making the rolling body roll in contact with different conductive segments, so that the detection circuit is turned on and the electrical performance of the detection circuit is measured by the measuring instrument, and the differences in the corresponding electrical performances of multiple rolling bodies to be tested are compared. If the difference of a certain rolling body exceeds the allowable value, the consistency of the conductivity of the rolling body is poor.

9. The method for detecting the conductivity consistency of rolling elements in a rotating conductive device according to claim 8, characterized in that: The inner ring is controlled to rotate forward and reversely by the rotating shaft, so that the rolling element rotates forward and reverse once on each conductive segment, and then moves to the next conductive segment.

10. The method for detecting the conductivity consistency of rolling elements in a rotating conductive device according to claim 8, characterized in that: Calculate the average value of the electrical performance measured by the measuring instrument when each rolling element is in contact with all conductive segments, and judge the consistency of the rolling element's conductivity based on the difference in the average performance.

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