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

Abstract

The invention provides a conductive slip ring electric contact monitoring device and a conductive slip ring electric contact monitoring method. The conductive slip ring electric contact monitoring device comprises a disc type conductive slip ring, an electric brush contact, a rotary table, a mobile platform, a temperature control device and a voltage and current monitoring device. The rotary table is connected with the disc-type conductive slip ring and can drive the disc-type conductive slip ring to rotate; the moving platform comprises a moving part and a moving frame, the moving frame is located above the disc type conductive slip ring, the moving part is connected with the moving frame and can drive the moving frame to move in the vertical direction, the first direction and the second direction, and the lower surface of the moving frame is connected with the electric brush contact through a force sensor. The force sensor is used for monitoring normal force and friction force between the brush contact and the collector ring channel of the disc-type conductive slip ring. The electric contact monitoring device for the conductive slip ring has the advantages that an electric friction test can be conveniently carried out on the disc type conductive slip ring, and the test precision and the test stability can be improved.

Description

Technical Field

[0001] The 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 the conductive slip ring to maintain normal operation. In the related art, the conductive slip ring test method only stays at the simple feedback of service life test and electrical signal. 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 and various extreme working conditions including but not limited to vacuum, high and low temperature, variable current density, etc. The conductive slip ring test in the related art can measure the jump of the electrical signal through an external measurement circuit, but there is a large gap in the test and analysis of the force and temperature signals during the current-carrying friction process, and it is difficult to reveal the abnormal behavior and mechanism of the current-carrying friction process from many aspects. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the 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 comprises:

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

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

[0007] A mobile platform, the mobile platform comprises a mobile part and a mobile frame, the mobile frame is located above the disc-type conductive slip ring, the mobile part is connected to the mobile frame and can drive the mobile frame to move in an up-down direction, a first direction and a second direction, any two of the first direction, the second direction and the up-down direction are perpendicular, and the lower surface of the mobile frame is connected to the brush contact through a force sensor, and the force sensor is used to monitor the normal force and friction force between the brush contact and the busbar 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 is used to monitor and record electrical signals at both ends of the contact area between the brush contact and the disc-type conductive slip ring.

[0010] The conductive slip ring electric contact monitoring device according to the embodiment of the present invention has the advantages of being able to easily perform an electric friction test on a disc-type conductive slip ring and improving the test accuracy and test stability.

[0011] The conductive slip ring electrical contact monitoring device of the embodiment of the present invention comprises a seat body, a vacuum cover and a vacuum pumping device, wherein the rotating table is arranged on the seat body, the seat body 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 moving platform and the temperature control device are all located in the vacuum chamber.

[0012] 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 circumference 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.

[0013] In some embodiments, the moving part includes

[0014] A driving seat, the driving seat being fixed on the seat body;

[0015] 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;

[0016] 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;

[0017] 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.

[0018] In some embodiments, the mobile 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 along the circumferential direction, and the bottom of each of the force sensors is provided with the brush contact;

[0019] An inner ring fixing frame is arranged on the seat body, an external conductive slip ring is arranged on the inner ring fixing frame, and a bottom of the external conductive slip ring passes through a through hole of the first annular plate and is connected to the disc-type conductive slip ring.

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

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

[0022] The moving part includes an auxiliary component, and the auxiliary component and the driving seat are located on both sides of the rotating table in the first direction. The auxiliary component includes a first slide rail, a first slide seat, a second slide rail, a second slide seat, a third slide frame, a third slide frame and a fastener, the first slide rail extends along the second direction, the first slide rail is arranged on the seat body, the first slide seat is slidably arranged on the first slide rail along the second direction, the second slide rail extends along the first direction, the second slide rail is arranged on the top of the first slide seat, the second slide seat is slidably arranged on the second slide rail along the first direction, the third slide frame extends in an up and down direction, the third slide seat is arranged on the second seat body, the third slide seat is slidably arranged in the third slide frame in the up and down direction, the first annular plate is respectively connected to the third slide seat and the third driving frame on both sides in the first direction, and the fastener is used to fix the positions of the first slide seat and the second slide seat.

[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 moving frame in a horizontal direction, so that the brush contact is aligned with the busbar of the disc-type conductive slip ring;

[0026] S2, using a vacuum pumping device to evacuate the vacuum chamber 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 part 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 applied 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 part stops driving the moving frame to move downward;

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

[0030] In the test, the normal force FN and the 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 the loop current I at both ends of the contact area between the brush contact and the bus ring.

[0031] In some embodiments, in the step S1, the moving part 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 the 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 the 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 the 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 Schematic diagram of a conductive slip ring electrical contact monitoring device according to an embodiment of the present invention.

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

[0041] Figure 3 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. Converging 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] 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 the 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 seat body 8, a vacuum cover and a vacuum pumping device.

[0054] The rotating table 3 is arranged on the base 8, the base 8 is connected to the vacuum cover and defines a vacuum chamber, the vacuum pumping device is used to pump out the gas in the vacuum chamber, and the disc-type conductive slip ring 1, the brush contact 2, the rotating table 3, the moving platform and the temperature control device 6 are all located in the vacuum chamber. Thus, the test can be carried out 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, and the rotating axis of the disc-type conductive slip ring 1 is in the up-down direction. Specifically, a rotating driver is arranged in the rotating platform 3, and the rotating axis of the rotating 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 moving frame 5 is located above the disc-type conductive slip ring 1, and the moving part 4 is connected to the moving frame 5 and can drive the moving frame 5 to move in the up-down direction, the first direction, and the second direction, and any two of the first direction, the second direction, and the up-down 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 moving part 4 is connected to the moving frame 5 and can drive the moving frame 5 to move in the up-down 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 driving seat 41 is fixed on the seat body 8. The first driver can drive the first driving frame 42 to move along the first direction on the driving seat 41. The second driver can drive the second driving frame 43 to move along the second direction on the first driving frame 42. The third driver can drive the third driving frame 44 to move along the up-down direction on the second driving frame 43, and the third driving frame 44 is connected to the moving frame 5. Specifically, the first driver can drive the first driving frame 42 and the second driving frame 43 and the third driving frame 44 on the first driving frame 42 to move in the first direction, and the second driver can drive the second driving frame 43 and the third driving frame 44 on the second driving frame 43 to move in the second direction, that is, the driving seat 41, the first driving frame 42, the first driver, the second driving frame 43, and the second driver can cooperate to drive the third driving frame 44 to move in the first direction and the second direction, so as to drive the moving frame 5 to move in the horizontal direction. For example, the first driver can drive the first driving frame 42 to move along the left-right direction on the driving seat 41. The second driver can drive the second driving frame 43 to move along the front-back direction on the first driving 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 moving frame 5 in the horizontal direction can be adjusted manually.

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

[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 disk 61 and a thermocouple 62. A first support rod 63 is provided on the base 8, and the thermocouple 62 is arranged on the first support rod 63 and adjacent to the outer peripheral surface 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 disk 61 is arranged on the lower side of the disc-type conductive slip ring 1, and the heating disk 61 is used to heat the disc-type conductive slip ring 1. In this way, the ambient temperature of the disc-type conductive slip ring 1 and the brush contact 2 in contact can 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 obtains information such as current and voltage through relevant instruments.

[0065] The movable frame 5 includes a first annular plate 51, which is an annular structure. The thickness direction of the first annular plate 51 is the up-down direction, and the axial direction of the first annular plate 51 is the up-down direction. An inner ring fixing frame 81 is provided on the seat body 8, and a conductive slip ring 82 is provided on the inner ring fixing frame 81. The bottom of the external conductive slip ring 82 passes through the through hole of the first annular plate 51 and is connected to the disk-type conductive slip ring 1 (the collector ring 11). Specifically, when only one brush contact 2 is in contact with the disk-type conductive slip ring 1, the external conductive slip ring 82 can form a loop with the disk-type conductive slip ring 1. When two brush contacts 2 are in contact with the disk-type conductive slip ring 1, the conductive slip ring 82 can form a middle connection line.

[0066] The bottom surface of the first annular plate 51 is provided with a plurality of force sensors 21 spaced apart in the circumferential direction, and a brush contact 2 is provided at the bottom of each force sensor 21, so that it is convenient to test a plurality of force sensors 21 simultaneously. A plurality of extension frames 52 are provided on the circumferential side of the first annular plate 51, and each extension frame 52 is provided with a fixed terminal, which is used to fix the wire connected to the brush contact 2.

[0067] like Figures 1 to 4 As shown, in some embodiments, the moving part 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 along the second direction, the first slide rail 45 is arranged on the seat body 8, and the first slide seat 451 is slidably arranged on the first slide rail 45 along the second direction. The second slide rail 46 extends along the first direction, the second slide rail 46 is arranged on the top of the first slide seat 451, and the second slide seat 461 is slidably arranged on the second slide rail 46 along the first direction. The third slide frame 47 extends along the up-down direction, the third slide frame 47 is arranged on the second seat body, and the third slide seat 471 is slidably arranged in the third slide frame 47 along the up-down direction.

[0070] The first annular plate 51 is connected to the third slide seat 471 and the third driving frame 44 on both sides in the first direction. Thus, the auxiliary assembly can be connected to the moving frame 5, so that the moving frame 5 can be more stable when moving in the up and down directions and the horizontal directions (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 fasteners can be used to fix the first slide 451 and the second slide 461 , thereby ensuring that the movable frame 5 is accurately positioned in the horizontal direction.

[0072] For example, the fastener is a stud. The auxiliary assembly and the drive seat 41 are located on both sides of the rotating table 3 in the left-right direction. The first slide rail 45 extends in the front-to-back direction, and the first slide seat 451 is slidably arranged 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 seat 461 is slidably arranged on the second slide rail 46 in the left-to-right direction. Both sides of the first annular plate 51 in the left-to-right direction are respectively connected to the third slide seat 471 and the third drive frame 44. The third slide frame 47 is provided with a slide groove for limiting the third slide seat 47.

[0073] The present invention further proposes 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 part 4 to move the moving frame 5 in the horizontal direction so that the brush contact 2 is aligned with the position of the bus ring 11 of the disc-type conductive slip ring 1. Specifically, in step S1, the moving part 4 moves the moving frame 5 in at least one of the first direction and the second direction so as to adjust the position of the brush contact 2 in the horizontal direction, so that the brush contact 2 can be 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] The fasteners are used to fix 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 relative horizontal position of the brush contact 2 and the bus ring 11, the positions of the first auxiliary frame 45 and the second auxiliary frame 46 that control the horizontal degree of freedom are fixed, and the third auxiliary frame 47 in the vertical direction is given appropriate pre-tightening force to enhance the overall structural rigidity.

[0076] S2, using a vacuum pumping device to evacuate the vacuum chamber defined by the seat body 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, and the voltage at both ends of the heating wire in the heating disk 61 is controlled to affect the heat generation to achieve temperature control of the heating disk 61, and friction tests are performed under different ambient temperatures. For example, the temperature of the disc-type conductive slip ring 1 is controlled to be 75°C by the temperature control device 6.

[0078] S4, the moving part 4 drives the moving frame 5 to move downward so that the brush contact 2 abuts against 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 measured by the force sensor 21 is equal to the designed pressure load, the moving part 4 stops driving the moving frame 5 to move downward. Specifically, in step S4, the initial value of the force sensor 21 is recorded, and the moving part 4 drives the moving frame 5 to move 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 up and down directions) is read by the force sensor 21, and the contact is pressed down at the second preset speed. When the normal force is equal to the designed pressing load of the brush contact 2, the pressing is stopped to keep 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 table 3 so that the rotating table 3 drives the disc-type conductive slip ring 1 to rotate. Specifically, in step S5, the rotating table 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, and the test time after the rotating table 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 table 3 rotates is 10 hours.

[0080] In the test, the normal force FN and friction force f between the brush contact 2 and the bus ring 11 are recorded by the force sensor 21, and the voltage and current monitoring device 7 records the voltage U and loop current I at both ends of the contact area between the brush contact 2 and the bus ring 11. Therefore, the friction and wear conditions in the operation of the slip ring can be tested and analyzed 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 at both ends of the contact area between the brush contact 2 and the bus ring 11, which has important guiding significance for analyzing the causes of sudden changes in electrical contact signals, studying the friction and wear laws and mechanisms of contact between the conductive friction pair surfaces, 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 the embodiment of the present invention utilizes the conductive slip ring electrical contact monitoring device according to the embodiment of the present invention. Therefore, the test can be carried out in multiple physical field environments such as vacuum, high and low temperature, and variable current density, which greatly expands the scope of application of the conductive slip ring electrical contact monitoring device. The conductive slip ring electrical contact monitoring method according to the embodiment of the present invention can record thermal signals and force signals, which is conducive to a comprehensive analysis of the electrical contact friction process of the disc-type conductive slip ring 1 from multiple angles, and provides a basis for scientific research. In addition, the present invention adopts 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 table to control the vertical displacement to improve the test accuracy and stability. At the same time, a high-precision three-dimensional force sensor is used to obtain the force signal change, 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 being convenient for performing an electric friction test on the disc-type conductive slip ring 1, and improving the test accuracy and the test stability. The conductive slip ring electrical contact monitoring device according to the embodiment of the present invention has the advantages of being convenient for performing an electric friction test on the disc-type conductive slip ring 1, and improving the test accuracy and the test stability.

[0083] In the description of the present invention, it is to 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”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0085] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0086] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0087] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. 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 described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0088] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary 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 arranged at intervals in the inner and outer directions on the upper surface of the disc-type conductive slip ring, the thickness direction of the disc-type conductive slip ring and the axial direction of the bus ring are both in the up-down direction, and the brush contact is used to abut against the bus ring; A rotating table, the rotating table is connected to the disc-type conductive slip ring and can drive the disc-type conductive slip ring to rotate, and the rotating axis of the disc-type conductive slip ring is an up-and-down direction; A mobile platform, the mobile platform comprises a mobile part and a mobile frame, the mobile frame is located above the disc-type conductive slip ring, the mobile part is connected to the mobile frame and can drive the mobile frame to move in an up-down direction, a first direction and a second direction, any two of the first direction, the second direction and the up-down direction are perpendicular, and the lower surface of the mobile frame is connected to the brush contact through a force sensor, and the force sensor is used to monitor the normal force and friction force between the brush contact and the busbar 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 is used to monitor and record electrical signals at both ends of the contact area between the brush contact and the disc-type conductive slip ring.

2. The conductive slip ring electrical contact monitoring device according to claim 1, characterized in that: It includes a base body, a vacuum cover and a vacuum pumping device, wherein the rotating table is arranged on the base body, the base body 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 moving 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 comprises a heating disk and a thermocouple. A first support rod is provided on the base body. The thermocouple is arranged 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 arranged 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: The mobile 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 along the circumferential direction, and the bottom of each of the force sensors is provided with the brush contact; An inner ring fixing frame is arranged on the seat body, an external conductive slip ring is arranged on the inner ring fixing frame, and a bottom of the external conductive slip ring passes through a through hole of the first annular plate and is connected to the disc-type conductive slip ring.

6. The conductive slip ring electrical contact monitoring device according to claim 5, characterized in that: A plurality of expansion racks are provided on the circumferential side of the first annular plate, and each of the expansion racks is provided with a fixed terminal; The first driver and the second driver are both manual driving devices, and the third driver is a motor; The moving part includes an auxiliary component, and the auxiliary component and the driving seat are located on both sides of the rotating table in the first direction. The auxiliary component includes a first slide rail, a first slide seat, a second slide rail, a second slide seat, a third slide frame, a third slide frame and a fastener, the first slide rail extends along the second direction, the first slide rail is arranged on the seat body, the first slide seat is slidably arranged on the first slide rail along the second direction, the second slide rail extends along the first direction, the second slide rail is arranged on the top of the first slide seat, the second slide seat is slidably arranged on the second slide rail along the first direction, the third slide frame extends in an up and down direction, the third slide seat is arranged on the second seat body, the third slide seat is slidably arranged in the third slide frame in the up and down direction, the first annular plate is respectively connected to the third slide seat and the third driving frame on both sides in the first direction, and the fastener is used to fix the positions of the first slide seat and the second slide seat.

7. The conductive slip ring electrical contact monitoring device according to any one of claims 4 to 6, characterized in that: The voltage and current monitoring device comprises a voltage and current acquisition card.

8. A method for monitoring 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 moving frame in a horizontal direction, so that the brush contact is aligned with the busbar of the disc-type conductive slip ring; S2, using a vacuum pumping device to evacuate the vacuum chamber defined by the seat 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 part 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 applied 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 part stops driving the moving frame to move downward; S5, turning on the rotating table so that the rotating table drives the disc-type conductive slip ring to rotate; In the test, the normal force FN and the 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 the loop current I at both ends of the contact area between the brush contact and the bus ring.

9. The conductive slip ring electrical contact monitoring method according to claim 8, characterized in that: In the step S1, the moving part 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 the 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 the 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.

10. The conductive slip ring electrical contact monitoring method according to claim 9, characterized in that: In the step S3, the temperature of the disc-type conductive slip ring is controlled to be 75° C. by the temperature control device; In step S4, the second preset speed is 0.5 mm / s; In the 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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