Conductive slip ring electrical contact monitoring device and conductive slip ring electrical contact monitoring method

Abstract

The present invention provides a conductive slip ring electrical contact monitoring device and a conductive slip ring electrical contact monitoring method. The conductive slip ring electrical contact monitoring device of the present invention includes a disc-type conductive slip ring and a brush contact, a rotating table, a moving platform, a temperature control device, and a voltage and current monitoring device; the rotating table is connected to the disc-type conductive slip ring and can drive the disc-type conductive slip ring to rotate; the moving platform includes a moving part and a moving frame, the moving frame is located above the disc-type conductive slip ring, the moving part is connected to the moving frame and can drive the moving frame to move in the up and down directions, the first direction, and the second direction, the lower surface of the moving frame is connected to the brush contact via a force sensor, and the force sensor is used to monitor the normal force and friction force between the brush contact and the bus ring of the disc-type conductive slip ring. The conductive slip ring electrical contact monitoring device according to the present invention has the advantages of facilitating the electric friction test of the disc-type conductive slip ring and improving the test accuracy and test stability.

Description

Technical Field

[0001] The present invention relates to the technical field of conductive slip ring detection, and in particular to a conductive slip ring electrical contact monitoring device and a conductive slip ring electrical contact monitoring method. Background Art

[0002] Reliable and stable electrical contact is the most important performance requirement for a conductive slip ring to maintain normal operation. In related technologies, the conductive slip ring testing method only stays at the service life test and simple feedback of electrical signals. The test process is fixed, and a single test covers a variety of working conditions. There is a lack of independent research on the friction and wear laws of the conductive slip ring under a single working condition. There are few tests and studies on the actual contact process during the operation of the slip ring, as well as on various extreme working conditions including but not limited to vacuum, high and low temperature, and variable current density. The conductive slip ring test in related technologies can measure the jump of electrical signals through an external measurement circuit, but there are large gaps in the testing and analysis of force, temperature signals, etc. during the current-carrying friction process, making it difficult to reveal the abnormal behavior and mechanism of the current-carrying friction process from multiple aspects. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, embodiments of the present invention provide a conductive slip ring electrical contact monitoring device and a conductive slip ring electrical contact monitoring method.

[0004] The conductive slip ring electrical contact monitoring device according to an embodiment of the present invention includes:

[0005] A disc-type conductive slip ring and a brush contact, wherein a plurality of bus rings are provided on the upper surface of the disc-type conductive slip ring and are spaced apart in the inner and outer directions, the thickness direction of the disc-type conductive slip ring and the axial direction of the bus rings are both in the upper and lower directions, and the brush contact is used to abut against the bus rings;

[0006] A rotating platform, the rotating platform is connected to the disc-type conductive slip ring and can drive the disc-type conductive slip ring to rotate, and the rotation axis of the disc-type conductive slip ring is the up-down direction;

[0007] a mobile platform, the mobile platform comprising a mobile portion and a mobile frame, the mobile frame being located above the disc-type conductive slip ring, the mobile portion being connected to the mobile frame and being capable of driving the mobile frame to move in an up-down direction, a first direction, and a second direction, wherein any two of the first direction, the second direction, and the up-down direction are perpendicular, and a lower surface of the mobile frame being connected to the brush contact via a force sensor, the force sensor being used to monitor a normal force and a friction force between the brush contact and the bus ring of the disc-type conductive slip ring;

[0008] A temperature control device, the temperature control device is used to monitor and control the temperature of the disc-type conductive slip ring;

[0009] A voltage and current monitoring device, the voltage and current monitoring device is used to monitor and record the electrical signals at both ends of the contact area between the brush contact and the disc-type conductive slip ring;

[0010] In some embodiments, the movable frame includes a first annular plate, the first annular plate is an annular structure, the thickness direction of the first annular plate is the up-down direction, the axial direction of the first annular plate is the up-down direction, the bottom surface of the first annular plate is provided with a plurality of the force sensors spaced circumferentially, and the bottom of each of the force sensors is provided with the brush contact;

[0011] An inner ring fixing frame is provided on the seat body, an external conductive slip ring is provided on the inner ring fixing frame, and a bottom of the external conductive slip ring passes through the through hole of the first annular plate and is connected to the disc-type conductive slip ring.

[0012] The conductive slip ring electric contact monitoring device according to the embodiment of the present invention has the advantages of facilitating electric friction testing of a disc-type conductive slip ring and improving test accuracy and test stability.

[0013] The conductive slip ring electrical contact monitoring device of an embodiment of the present invention includes a base, a vacuum cover and a vacuum pumping device. The rotating table is arranged on the base, the base is connected to the vacuum cover and defines a vacuum chamber. The vacuum pumping device is used to extract the gas in the vacuum chamber. The disc-type conductive slip ring, the brush contact, the rotating table, the movable platform and the temperature control device are all located in the vacuum chamber.

[0014] In some embodiments, the temperature control device includes a heating disk and a thermocouple, a first support rod is provided on the base body, the thermocouple is provided on the first support rod and is adjacent to the outer peripheral surface of the disc-type conductive slip ring, the thermocouple is used to monitor the temperature of the disc-type conductive slip ring, the heating disk is provided on the lower side of the disc-type conductive slip ring, and the heating disk is used to heat the disc-type conductive slip ring.

[0015] In some embodiments, the moving portion includes

[0016] A driving seat, the driving seat being fixed on the seat body;

[0017] a first driving frame and a first driver, wherein the first driver can drive the first driving frame to move along the first direction on the driving seat;

[0018] a second driving frame and a second driver, wherein the second driver can drive the second driving frame to move along the second direction on the first driving frame;

[0019] A third driving frame and a third driver, wherein the third driver can drive the third driving frame to move in an up-down direction on the second driving frame, and the third driving frame is connected to the moving frame.

[0020] In some embodiments, a plurality of expansion racks are provided on the circumference of the first annular plate, and each expansion rack is provided with a fixed terminal;

[0021] The first driver and the second driver are both manual drive devices, and the third driver is a motor;

[0022] The cam is adapted to move the first and second guide rails relative to each other so as to allow the first and second guide rails to move relative to each other, so that the cam can move along the first and second guide rails and move along the first and second guide rails relative to each other.

[0023] In some embodiments, the voltage and current monitoring device includes a voltage and current acquisition card.

[0024] The present invention also proposes a conductive slip ring electrical contact monitoring method using the conductive slip ring electrical contact monitoring device, comprising the following steps:

[0025] S1. Using a moving part to move the movable frame in a horizontal direction so that the brush contact is aligned with the bus ring of the disc-type conductive slip ring;

[0026] S2, using a vacuum pumping device to evacuate the vacuum cavity defined by the base body and the vacuum cover;

[0027] S3. Monitoring and controlling the temperature of the disc-type conductive slip ring by a temperature control device;

[0028] S4, the moving portion drives the moving frame to move downward so that the brush contact abuts against the disc-type conductive slip ring, and when the normal force FN exerted by the brush contact on the disc-type conductive slip ring measured by the force sensor is equal to the designed pressure load, the moving portion stops driving the moving frame to move downward;

[0029] S5, turning on the rotating platform so that the rotating platform drives the disc-type conductive slip ring to rotate;

[0030] In the test, the normal force FN and friction force f between the brush contact and the bus ring are recorded by the force sensor, and the voltage and current monitoring device records the voltage U and loop current I at both ends of the contact area between the brush contact and the bus ring.

[0031] In some embodiments, in step S1, the moving portion moves the moving frame in at least one of the first direction and the second direction so as to adjust the position of the brush contact in the horizontal direction;

[0032] In step S2, the pressure of the vacuum chamber after evacuation is less than or equal to 1e-3Pa;

[0033] In the step S3, the temperature of the disc-type conductive slip ring is controlled by the temperature control device to be greater than or equal to 70° C. and less than or equal to 80° C.;

[0034] In the step S4, the moving part drives the moving frame to move downward at a second preset speed, and the second preset speed is greater than or equal to 0.2 mm / s and less than or equal to 1 mm / s;

[0035] In step S5, the rotating table drives the disc-type conductive slip ring to rotate at a third preset linear speed, the third preset linear speed is greater than or equal to 15 mm / s and less than or equal to 30 mm / s, and the test time after the rotating table rotates is greater than or equal to 8 hours.

[0036] In some embodiments, in step S3, the temperature of the disc-type conductive slip ring is controlled to be 75° C. by the temperature control device;

[0037] In step S4, the second preset speed is 0.5 mm / s;

[0038] In step S5, the third preset linear speed is 22.93 mm / s, and the test time after the rotating table rotates is 10 hours. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 FIG. 1 is a schematic diagram of a conductive slip ring electrical contact monitoring device according to an embodiment of the present invention.

[0040] Figure 2 FIG. 1 is a schematic diagram of a conductive slip ring electrical contact monitoring device according to an embodiment of the present invention.

[0041] Figure 3 FIG. 4 is a front view of a conductive slip ring electrical contact monitoring device according to another embodiment of the present invention.

[0042] Figure 4 FIG. 4 is a schematic diagram of a conductive slip ring electrical contact monitoring device according to another embodiment of the present invention.

[0043] Reference numerals:

[0044] 1. Disc type conductive slip ring, 11. Sink ring;

[0045] 2. Brush contact, 21. Force sensor;

[0046] 3. Rotating table;

[0047] 4. Moving part, 41. Driving seat, 42. First driving frame, 43. Second driving frame, 44. Third driving frame, 45. First slide rail, 451. First slide seat, 46. Second slide rail, 461. Second slide seat, 47. Third slide seat, 471. Third slide seat;

[0048] 5. Mobile frame, 51. First annular plate, 52. Extension frame;

[0049] 6. Temperature control device, 61. Heating plate, 62. Thermocouple, 63. First support rod;

[0050] 7. Voltage and current monitoring device;

[0051] 8. Seat body, 81. Inner ring fixing frame, 82. External conductive slip ring. DETAILED DESCRIPTION

[0052] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0053] The following describes the conductive slip ring electrical contact monitoring device according to an embodiment of the present invention with reference to the accompanying drawings. Figures 1 to 4 As shown, the conductive slip ring electrical contact monitoring device according to an embodiment of the present invention includes a disc-type conductive slip ring 1, a brush contact 2, a rotating table 3, a moving platform, a temperature control device 6, a voltage and current monitoring device 7, a base 8, a vacuum cover and a vacuum pumping device.

[0054] The rotating table 3 is mounted on a base 8, which is connected to a vacuum housing and defines a vacuum chamber. A vacuum pump is used to extract the gas from the vacuum chamber. The disc-type conductive slip ring 1, brush contact 2, rotating table 3, movable platform, and temperature control device 6 are all located within the vacuum chamber. This allows the test to be conducted in a vacuum environment.

[0055] A plurality of bus rings 11 are provided on the upper surface of the disc-type conductive slip ring 1 at intervals in the inner and outer directions. The thickness direction of the disc-type conductive slip ring 1 and the axial direction of the bus ring 11 are both in the upper and lower directions. The brush contact 2 is used to abut against the bus ring 11.

[0056] The rotating platform 3 is connected to the disc-type conductive slip ring 1 and can drive the disc-type conductive slip ring 1 to rotate. The rotation axis of the disc-type conductive slip ring 1 is in the up-down direction. Specifically, a rotation driver is provided in the rotating platform 3, and the rotation axis of the rotation driver is connected to the bottom of the disc-type conductive slip ring 1.

[0057] like Figures 1 to 4 As shown, the mobile platform includes a moving part 4 and a moving frame 5.

[0058] The movable frame 5 is located above the disc-type conductive slip ring 1. The movable portion 4 is connected to the movable frame 5 and can drive the movable frame 5 to move in the vertical direction, the first direction, and the second direction. Any two of the first direction, the second direction, and the vertical direction are perpendicular. The first direction can be the left-right direction, and the second direction can be the front-back direction. For example, the movable portion 4 is connected to the movable frame 5 and can drive the movable frame 5 to move in the vertical direction, the front-back direction, and the left-right direction.

[0059] like Figure 4 As shown, in some embodiments, the moving part 4 includes a driving seat 41, a first driving frame 42, a first driver, a second driving frame 43, a second driver, a third driving frame 44 and a third driver,

[0060] The drive base 41 is fixed to the base 8. A first driver drives the first drive frame 42 to move in a first direction on the drive base 41. A second driver drives the second drive frame 43 to move in a second direction on the first drive frame 42. A third driver drives the third drive frame 44 to move in a vertical direction on the second drive frame 43. The third drive frame 44 is connected to the movable frame 5. Specifically, the first driver drives the first drive frame 42, the second drive frame 43, and the third drive frame 44 on the first drive frame 42 to move in the first direction, while the second driver drives the second drive frame 43 and the third drive frame 44 on the second drive frame 43 to move in the second direction. In other words, the drive base 41, the first drive frame 42, the first driver, the second drive frame 43, and the second driver cooperate to drive the third drive frame 44 to move in the first and second directions, thereby driving the movable frame 5 to move horizontally. For example, the first driver can drive the first drive frame 42 to move in a left-right direction on the drive base 41. The second driver can drive the second drive frame 43 to move in a front-back direction on the first drive frame 42.

[0061] In some embodiments, the first driver and the second driver are both manual drive devices, and the third driver is a motor. Specifically, the first driver and the second driver are manual screw transmission devices, and the position of the movable frame 5 in the horizontal direction can be adjusted manually.

[0062] The lower surface of the movable frame 5 is connected to the brush contact 2 via a force sensor 21. The force sensor 21 is used to monitor the normal force and friction force between the brush contact 2 and the bus ring 11 of the disc-type conductive slip ring 1. Specifically, the force sensor 21 is a three-dimensional force sensor that can simultaneously measure forces in three directions (usually the X, Y, and Z axes).

[0063] like Figures 1 to 4 As shown, the temperature control device 6 is used to monitor and control the temperature of the disc-type conductive slip ring 1. Specifically, the temperature control device 6 includes a heating plate 61 and a thermocouple 62. A first support rod 63 is provided on the base 8. The thermocouple 62 is located on the first support rod 63 and adjacent to the outer circumference of the disc-type conductive slip ring 1. The thermocouple 62 is used to monitor the temperature of the disc-type conductive slip ring 1. The heating plate 61 is located on the underside of the disc-type conductive slip ring 1 and is used to heat the disc-type conductive slip ring 1. This allows the ambient temperature of the contact area between the disc-type conductive slip ring 1 and the brush contact 2 to be controlled.

[0064] The voltage and current monitoring device 7 is used to monitor and record the electrical signals at both ends of the contact area between the brush contact 2 and the disc-type conductive slip ring 1. For example, the voltage and current monitoring device 7 includes a voltage and current acquisition card. Specifically, the voltage and current monitoring device 7 includes two types of measurement circuits and uses relevant instruments to obtain information such as current and voltage.

[0065] The movable frame 5 includes a first annular plate 51. The first annular plate 51 is an annular structure with its thickness extending vertically and its axial direction extending vertically. The base 8 is provided with an inner ring mounting bracket 81, on which a conductive slip ring 82 is mounted. The bottom of the external conductive slip ring 82 passes through a through-hole in the first annular plate 51 and connects to the disc-type conductive slip ring 1 (the bus ring 11 thereof). Specifically, when only one brush contact 2 is in contact with the disc-type conductive slip ring 1, the external conductive slip ring 82 forms a circuit with the disc-type conductive slip ring 1. When two brush contacts 2 are in contact with the disc-type conductive slip ring 1, the conductive slip ring 82 forms a central connecting circuit.

[0066] The bottom surface of the first annular plate 51 is provided with multiple force sensors 21 spaced circumferentially. Each force sensor 21 has a brush contact 2 at its base, facilitating simultaneous testing of multiple force sensors 21. Multiple expansion brackets 52 are provided around the circumference of the first annular plate 51. Each expansion bracket 52 is equipped with a fixed terminal for securing the wires extending from the brush contact 2.

[0067] like Figures 1 to 4 As shown, in some embodiments, the moving portion 4 includes an auxiliary component, and the auxiliary component and the driving seat 41 are located on both sides of the rotating platform 3 in the first direction.

[0068] The auxiliary assembly includes a first slide rail 45 , a first slide seat 451 , a second slide rail 46 , a second slide seat 461 , a third slide bracket 47 , a third slide seat 471 and fasteners.

[0069] The first slide rail 45 extends in the second direction and is disposed on the base 8. The first slide seat 451 is slidably disposed on the first slide rail 45 in the second direction. The second slide rail 46 extends in the first direction and is disposed on top of the first slide seat 451. The second slide seat 461 is slidably disposed on the second slide rail 46 in the first direction. The third slide frame 47 extends in the vertical direction and is disposed on the second slide seat 461. The third slide frame 471 is slidably disposed within the third slide frame 47 in the vertical direction.

[0070] The first annular plate 51 is connected to the third slide 471 and the third drive frame 44 on both sides in the first direction. In this way, the auxiliary assembly can be connected to the movable frame 5, making the movable frame 5 more stable when moving in the vertical direction and the horizontal direction (the first direction and the second direction).

[0071] The fasteners are used to fix the positions of the first slide 451 and the second slide 461, so that after the position of the movable frame 5 is adjusted in the horizontal direction, the first slide 451 and the second slide 461 can be fixed by the fasteners, thereby ensuring that the movable frame 5 is accurately positioned in the horizontal direction.

[0072] For example, the fasteners are studs. The auxiliary assembly and the drive bracket 41 are located on either side of the turntable 3 in the left-right direction. The first slide rail 45 extends in the front-to-back direction, and the first slide 451 is slidably mounted on the first slide rail 45 in the front-to-back direction. The second slide rail 46 extends in the left-to-right direction, and the second slide 461 is slidably mounted on the second slide rail 46 in the left-to-right direction. The first annular plate 51 is connected to the third slide 471 and the third drive bracket 44 on either side in the left-to-right direction, respectively. The third slide 47 is provided with a guide groove for retaining the third slide 47.

[0073] The present invention further provides a conductive slip ring electrical contact monitoring method according to a conductive slip ring electrical contact monitoring device according to an embodiment of the present invention. The conductive slip ring electrical contact monitoring method according to an embodiment of the present invention comprises the following steps:

[0074] S1. Use the moving unit 4 to move the moving frame 5 in the horizontal direction so that the brush contact 2 is aligned with the bus ring 11 of the disc-type conductive slip ring 1. Specifically, in step S1, the moving unit 4 moves the moving frame 5 in at least one of a first direction and a second direction to adjust the horizontal position of the brush contact 2 so that the brush contact 2 is located directly above the bus ring 11 of the disc-type conductive slip ring 1, so that the brush contact 2 can abut against the bus ring 11 of the disc-type conductive slip ring 1 after moving downward.

[0075] Fasteners are used to secure the positions of the first auxiliary frame 45 and the second auxiliary frame 46. To improve the overall structural stability of the system, after determining the horizontal position of the brush contacts 2 relative to the bus ring 11, the positions of the first and second auxiliary frames 45, 46, which control the horizontal degrees of freedom, are fixed, and appropriate preload is applied to the third auxiliary frame 47 in the vertical direction to enhance the overall structural rigidity.

[0076] S2, using a vacuum device to evacuate the vacuum chamber defined by the base 8 and the vacuum cover. Specifically, in step S2, the pressure of the vacuum chamber after evacuation is less than or equal to 1e-3Pa. That is, the pressure of the vacuum chamber after evacuation is less than or equal to 10 - 3 Pa.

[0077] S3. Monitor and control the temperature of the disc-type conductive slip ring 1 through the temperature control device 6. Specifically, in step S3, the temperature of the disc-type conductive slip ring 1 is controlled by the temperature control device 6 to be greater than or equal to 70°C and less than or equal to 80°C. During the friction process, the current ambient temperature is obtained through the feedback circuit of the thermocouple 62. The voltage across the heating wire in the heating disk 61 is controlled to affect the heat generation to achieve temperature control of the heating disk 61. Friction tests are performed under different ambient temperatures. For example, the temperature of the disc-type conductive slip ring 1 is controlled by the temperature control device 6 to be 75°C.

[0078] S4: The moving unit 4 drives the moving frame 5 downward so that the brush contact 2 abuts the disc-type conductive slip ring 1. When the normal force FN exerted by the brush contact 2 on the disc-type conductive slip ring 1, as measured by the force sensor 21, equals the designed pressure load, the moving unit 4 stops driving the moving frame 5 downward. Specifically, in step S4, the initial value of the force sensor 21 is recorded, and the moving unit 4 drives the moving frame 5 downward at a second preset speed, which is greater than or equal to 0.2 mm / s and less than or equal to 1 mm / s. The normal force FN (in the vertical direction) is read by the force sensor 21, and the contact is pressed down at the second preset speed. When the normal force equals the designed pressure load of the brush contact 2, the brush contact 2 stops pressing, maintaining the position of the brush contact 2 unchanged. For example, the second preset speed is 0.5 mm / s.

[0079] S5. Turn on the rotating platform 3 so that it drives the disc-type conductive slip ring 1 to rotate. Specifically, in step S5, the rotating platform 3 drives the disc-type conductive slip ring 1 to rotate at a third preset linear velocity. The third preset linear velocity is greater than or equal to 15 mm / s and less than or equal to 30 mm / s. The test time after the rotating platform 3 rotates is greater than or equal to 8 hours. For example, in step S5, the third preset linear velocity is 22.93 mm / s, and the test time after the rotating platform 3 rotates is 10 hours.

[0080] During the test, the force sensor 21 records the normal force FN and friction force f between the brush contact 2 and the bus ring 11, and the voltage and current monitoring device 7 records the voltage U and loop current I across the contact area between the brush contact 2 and the bus ring 11. This allows for testing and analyzing the friction and wear of the slip ring during operation based on the normal force FN and friction force f between the brush contact 2 and the bus ring 11, and the voltage U and loop current I across the contact area between the brush contact 2 and the bus ring 11. This has important guiding significance for analyzing the causes of sudden changes in electrical contact signals, studying the friction and wear patterns and mechanisms of contact between conductive friction pairs, and improving the manufacturing process and service life of the disc-type conductive slip ring 1.

[0081] The conductive slip ring electrical contact monitoring method according to an embodiment of the present invention utilizes the conductive slip ring electrical contact monitoring device according to an embodiment of the present invention. This allows for testing in multiple physical field environments such as vacuum, high and low temperature, and variable current density, greatly expanding the scope of application of the conductive slip ring electrical contact monitoring device. The conductive slip ring electrical contact monitoring method according to an embodiment of the present invention can record thermal signals and force signals, which is beneficial for comprehensively analyzing the electrical contact friction process of the disc-type conductive slip ring 1 from multiple angles, providing a basis for scientific research. In addition, the present invention uses a three-degree-of-freedom platform with a three-degree-of-freedom slide rail for position adjustment when controlling the applied load, and uses the slide to control the vertical displacement in order to improve the test accuracy and stability. At the same time, a high-precision three-dimensional force sensor is used to obtain force signal changes, which has extremely high resolution and reliability.

[0082] Therefore, the conductive slip ring electrical contact monitoring method according to the embodiment of the present invention has the advantages of facilitating the electric friction test of the disc-type conductive slip ring 1 and improving the test accuracy and test stability. The conductive slip ring electrical contact monitoring device according to the embodiment of the present invention has the advantages of facilitating the electric friction test of the disc-type conductive slip ring 1 and improving the test accuracy and test stability.

[0083] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0085] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0086] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0087] In the present invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0088] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A conductive slip ring electrical contact monitoring device, characterized in that: include: A disc-type conductive slip ring and a brush contact, wherein a plurality of bus rings are provided on the upper surface of the disc-type conductive slip ring and are spaced apart in the inner and outer directions, the thickness direction of the disc-type conductive slip ring and the axial direction of the bus rings are both in the upper and lower directions, and the brush contact is used to abut against the bus rings; A rotating platform, the rotating platform is connected to the disc-type conductive slip ring and can drive the disc-type conductive slip ring to rotate, and the rotation axis of the disc-type conductive slip ring is the up-down direction; a mobile platform, the mobile platform comprising a mobile portion and a mobile frame, the mobile frame being located above the disc-type conductive slip ring, the mobile portion being connected to the mobile frame and being capable of driving the mobile frame to move in an up-down direction, a first direction, and a second direction, wherein any two of the first direction, the second direction, and the up-down direction are perpendicular, and a lower surface of the mobile frame being connected to the brush contact via a force sensor, the force sensor being used to monitor a normal force and a friction force between the brush contact and the bus ring of the disc-type conductive slip ring; A temperature control device, the temperature control device is used to monitor and control the temperature of the disc-type conductive slip ring; A voltage and current monitoring device, the voltage and current monitoring device is used to monitor and record the electrical signals at both ends of the contact area between the brush contact and the disc-type conductive slip ring; The movable frame includes a first annular plate, the first annular plate is an annular structure, the thickness direction of the first annular plate is the up-down direction, the axial direction of the first annular plate is the up-down direction, the bottom surface of the first annular plate is provided with a plurality of the force sensors spaced circumferentially, and the bottom of each of the force sensors is provided with the brush contact; An inner ring fixing frame is provided on the seat body, an external conductive slip ring is provided on the inner ring fixing frame, and the bottom of the external conductive slip ring passes through the through hole of the first annular plate and is connected to the disc-type conductive slip ring.

2. The conductive slip ring electrical contact monitoring device according to claim 1, characterized in that: The invention comprises a base, a vacuum cover and a vacuum pumping device, wherein the rotating table is arranged on the base, the base is connected to the vacuum cover and defines a vacuum chamber, the vacuum pumping device is used to extract the gas in the vacuum chamber, and the disc-type conductive slip ring, the brush contact, the rotating table, the movable platform and the temperature control device are all located in the vacuum chamber.

3. The conductive slip ring electrical contact monitoring device according to claim 2, characterized in that: The temperature control device includes a heating disk and a thermocouple. A first support rod is provided on the base body. The thermocouple is provided on the first support rod and is adjacent to the outer peripheral surface of the disc-type conductive slip ring. The thermocouple is used to monitor the temperature of the disc-type conductive slip ring. The heating disk is provided on the lower side of the disc-type conductive slip ring and is used to heat the disc-type conductive slip ring.

4. The conductive slip ring electrical contact monitoring device according to claim 2, characterized in that: The moving part includes A driving seat, the driving seat being fixed on the seat body; a first driving frame and a first driver, wherein the first driver can drive the first driving frame to move along the first direction on the driving seat; a second driving frame and a second driver, wherein the second driver can drive the second driving frame to move along the second direction on the first driving frame; A third driving frame and a third driver, wherein the third driver can drive the third driving frame to move in an up-down direction on the second driving frame, and the third driving frame is connected to the moving frame.

5. The conductive slip ring electrical contact monitoring device according to claim 4, characterized in that: A plurality of extension frames are provided on the circumference of the first annular plate, and each of the extension frames is provided with a fixed terminal; The first driver and the second driver are both manual drive devices, and the third driver is a motor; The cam is adapted to move the first and second guide rails relative to each other so as to allow the first and second guide rails to move relative to each other, so that the cam can move along the first and second guide rails and move along the first and second guide rails relative to each other.

6. The conductive slip ring electrical contact monitoring device according to claim 4 or 5, characterized in that: The voltage and current monitoring device includes a voltage and current acquisition card.

7. A method for monitoring the electrical contact of a conductive slip ring using the conductive slip ring electrical contact monitoring device according to claim 4, characterized in that: The following steps are involved: S1. Using a moving part to move the movable frame in a horizontal direction so that the brush contact is aligned with the bus ring of the disc-type conductive slip ring; S2, using a vacuum pumping device to evacuate the vacuum cavity defined by the base body and the vacuum cover; S3. Monitoring and controlling the temperature of the disc-type conductive slip ring by a temperature control device; S4, the moving portion drives the moving frame to move downward so that the brush contact abuts against the disc-type conductive slip ring, and when the normal force FN exerted by the brush contact on the disc-type conductive slip ring measured by the force sensor is equal to the designed pressure load, the moving portion stops driving the moving frame to move downward; S5, turning on the rotating platform so that the rotating platform drives the disc-type conductive slip ring to rotate; In the test, the normal force FN and friction force f between the brush contact and the bus ring are recorded by the force sensor, and the voltage and current monitoring device records the voltage U and loop current I at both ends of the contact area between the brush contact and the bus ring.

8. The conductive slip ring electrical contact monitoring method according to claim 7, characterized in that: In the step S1, the moving portion moves the moving frame in at least one of the first direction and the second direction so as to adjust the position of the brush contact in the horizontal direction; In step S2, the pressure of the vacuum chamber after evacuation is less than or equal to 1e-3Pa; In the step S3, the temperature of the disc-type conductive slip ring is controlled by the temperature control device to be greater than or equal to 70° C. and less than or equal to 80° C.; In the step S4, the moving part drives the moving frame to move downward at a second preset speed, and the second preset speed is greater than or equal to 0.2 mm / s and less than or equal to 1 mm / s; In step S5, the rotating table drives the disc-type conductive slip ring to rotate at a third preset linear speed, the third preset linear speed is greater than or equal to 15 mm / s and less than or equal to 30 mm / s, and the test time after the rotating table rotates is greater than or equal to 8 hours.

9. The conductive slip ring electrical contact monitoring method according to claim 8, characterized in that: In the step S3, the temperature of the disc-type conductive slip ring is controlled to 75° C. by the temperature control device; In step S4, the second preset speed is 0.5 mm / s; In step S5, the third preset linear speed is 22.93 mm / s, and the test time after the rotating table rotates is 10 hours.

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