A conductive rolling ring current resistance testing apparatus

Abstract

The application discloses a kind of electrically conductive rolling ring current resistance test equipment, it is related to electrical device test technical field, including base, multiple clamping assemblies are circumferentially distributed on the base, top cover is arranged above the base, and friction disc is rotationally arranged below the top cover and corresponds the position of each clamping assembly;The clamping assembly includes two guide rails, and fixed clamping block and sliding clamping block are arranged between the two guide rails;Center column is fixed between the base and the top cover, sliding column is slidably arranged in the center column, and the center of the top cover is fixed on the sliding column;Lifting cylinder connected to sliding column is arranged in the base;Compared with prior art, the application realizes the efficient, complex, high fidelity of electric rolling ring test by multi-station synchronous test architecture, linkage clamping mechanism and dynamic clamping follow-up.

Description

Technical Field

[0001] This invention relates to the field of electrical device testing technology, specifically a conductive rolling ring current resistance testing device. Background Technology

[0002] Conductive rolling rings (or simply electric rolling rings) are key electromechanical components for ensuring continuous and reliable transmission of signals, current, or data between rotating and stationary components. Their core performance indicators—stability of dynamic contact resistance, current transmission capacity, and wear resistance and reliability under long-term operation—directly determine the overall performance and lifespan of the equipment system they are used in (such as wind turbines, radar, spacecraft gyratory platforms, industrial robots, and high-end medical equipment). Therefore, rigorous electrical performance testing under operational conditions is essential during the manufacturing, factory acceptance, and R&D verification stages of electric rolling rings. Traditional simple static resistance measurements cannot assess their performance under real dynamic conditions such as rotation and vibration.

[0003] The industry standard for dynamic performance testing of electric rolling rings involves a motor driving a friction wheel or coupling to rotate the rotor of a single electric rolling ring. The rolling ring housing is then fixed to a workbench using a simple vise or bolt clamp. Testers manually record data using an external multimeter or resistance meter. This method allows for testing only one sample at a time, and the clamping, wiring, and disassembly processes are time-consuming and cannot meet the needs of mass production sampling or rapid verification. Typically, only rotational testing is possible, failing to simulate complex conditions such as vibration. The entire process requires manual operation and recording, resulting in high labor intensity and a high risk of errors. Even with integrated vibration functionality, existing clamp designs are mostly rigidly locked. When vibration excitation is applied, the rolling ring housing is firmly fixed by the clamp, preventing effective transfer of vibration energy to the test piece. The test actually measures the clamp's vibration, not the rolling ring's working state under vibration, leading to distorted vibration test results that fail to accurately reflect the product's contact reliability under vibration conditions.

[0004] Therefore, it is necessary to provide a conductive rolling ring current resistance testing device to solve the problems mentioned in the background art. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a conductive rolling ring current resistance testing device, comprising a base, wherein multiple clamping components are circumferentially distributed on the base, a top cover is provided above the base, and a friction disc is rotatably provided under the top cover corresponding to the position of each clamping component.

[0006] Furthermore, the clamping assembly includes two guide rails, with a fixed clamping block and a sliding clamping block disposed between the two guide rails.

[0007] Furthermore, a central column is fixed between the base and the top cover, and a sliding column is slidably disposed inside the central column, with the center of the top cover fixed on the sliding column; a lifting cylinder connected to the sliding column is disposed inside the base.

[0008] Furthermore, a central gear is rotatably disposed at the center of the top of the top cover, and a plurality of side gears meshing with the central gear are rotatably disposed around the top of the top of the top cover, each of the side gears being connected to each friction disc; a central motor connected to the central gear is disposed inside the sliding column.

[0009] Furthermore, a sliding disc is slidably disposed in the central column, and a push rod is connected to the side of each sliding clamp block near the central column. A connecting rod is hinged between the sliding disc and each push rod.

[0010] Furthermore, a vibrating column is slidably disposed in the base below each of the clamping components, and a vibrating disk is slidably disposed in the base, with each vibrating column connected to the vibrating disk.

[0011] Furthermore, multiple vibration cylinders are provided between the vibratory plate and the bottom of the base.

[0012] Furthermore, a spring is provided around the central column between the sliding disk and the top cover.

[0013] Furthermore, multiple vertical vibration shafts are fixed in the vibratory plate, and the upper ends of the vibration shafts slide through the base and are fixed in the sliding plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] Improve testing efficiency and meet the needs of batch and rapid testing; the equipment has multiple independent and synchronous test stations distributed around its circumference, which can install and test multiple electric rolling ring samples at one time. Compared with a single-station test station, the test throughput is increased several times. It is particularly suitable for final inspection after production line exit, quality spot check or R&D comparative testing, and can quickly obtain statistical data.

[0016] Synchronous drive and measurement: The friction discs at all stations are synchronously driven by a single central motor through a gear system, ensuring that all tested rolling rings operate at the exact same speed. Combined with multi-channel testing instruments, parallel and real-time monitoring and recording of the performance of all samples can be achieved, which is far more efficient than sequential testing.

[0017] This system enables rapid, consistent, and adaptive sample clamping. A single operation—raising or lowering the top cover—activates an internal linkage mechanism, driving the sliding clamps at all stations to move synchronously, instantly clamping or releasing all samples simultaneously. This eliminates the tedious manual locking of each clamp, significantly reducing clamping time. All sliding clamps are driven by the same linkage mechanism, ensuring consistent movement and initial clamping force. This guarantees identical clamping conditions for samples at different stations, minimizing test variables introduced by clamping force differences and improving the comparability of test data.

[0018] The combination design of sliding clamp and fixed clamp allows the fixture to adapt to electric rolling ring housings of different diameters or shapes within a certain size range by adjusting the position of the sliding clamp, thus enhancing the versatility and flexibility of the equipment.

[0019] It highly simulates real-world complex working conditions, significantly enhancing testing value; the equipment not only provides rotational testing but also integrates a vibration system that can be started independently or synchronously. It can simulate the harsh combined "rotation + vibration" working conditions commonly encountered by electric rolling rings in practical applications such as aerospace, automotive equipment, and rotating machinery.

[0020] During vibration testing, the vibratory plate synchronously lifts the sliding plate slightly through the vibration shaft, causing the clamping force to relax instantaneously and slightly, allowing the electric rolling ring housing to produce minute movements. This solves the industry pain point that rigid clamps "lock" the specimen during vibration testing, resulting in the ineffective transmission of vibration. It turns vibration testing from ineffective to effective, and can truly evaluate the contact reliability, wear life and signal stability of the electric rolling ring in dynamic environments.

[0021] The friction disc directly drives the roller to rotate, the lifting cylinder can precisely adjust the contact pressure, and the vibration frequency and amplitude are adjustable. Together, they form a highly controllable and realistic simulation test environment. The test results have extremely high reference value for predicting the performance of products in actual applications. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a conductive rolling ring current resistance testing device.

[0023] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 3 This is a schematic cross-sectional view of the clamping component.

[0025] Figure 4 This is a schematic diagram of the top structure of the base;

[0026] In the diagram: 1. Base; 2. Clamping assembly; 21. Guide rail; 22. Fixed clamping block; 23. Sliding clamping block; 24. Push rod; 25. Connecting rod; 3. Top cover; 31. Central gear; 32. Side gear; 4. Friction disc; 5. Central column; 51. Sliding column; 52. Lifting cylinder; 53. Central motor; 54. Sliding disc; 55. Spring; 6. Vibrating column; 7. Vibrating disc; 8. Vibrating shaft; 9. Vibrating cylinder. Detailed Implementation

[0027] Please see Figures 1-4 In this embodiment of the invention, a conductive rolling ring current resistance testing device includes a base 1, on which a plurality of clamping components 2 are distributed circumferentially, and a top cover 3 is provided above the base 1. A friction disk 4 is rotatably provided under the top cover 3 corresponding to the position of each clamping component 2.

[0028] By clamping multiple electric rolling rings into the clamping assembly 2, the rotation of the friction disk 4 drives the electric rolling rings to rotate, thereby testing the current resistance of the electric rolling rings during operation. Multiple electric rolling rings can be installed and tested simultaneously, improving testing efficiency and making it suitable for product sampling inspection or end-of-line testing.

[0029] In this embodiment, the clamping assembly 2 includes two guide rails 21, and a fixed clamping block 22 and a sliding clamping block 23 are arranged between the two guide rails 21.

[0030] The electric rolling ring can be clamped by the fixed clamp 22 and the sliding clamp 23. The combination of the fixed clamp 22 and the sliding clamp 23 allows the fixture to be adapted to electric rolling rings of different diameters or sizes by adjusting the position of the sliding clamp 23.

[0031] In this embodiment, a central column 5 is fixed between the base 1 and the top cover 3, and a sliding column 51 is slidably disposed inside the central column 5. The center of the top cover 3 is fixed on the sliding column 51. A lifting cylinder 52 connected to the sliding column 51 is disposed inside the base 1.

[0032] The height of the top cover 3 can be adjusted by the lifting cylinder 52, so that each friction disc 4 can fit into the rolling part of the electric rolling ring to simulate the rotation operation of the electric rolling ring.

[0033] In this embodiment, a central gear 31 is rotatably disposed at the center of the top of the top cover 3, and a plurality of side gears 32 that mesh with the central gear 31 are rotatably disposed around the top of the top of the top cover 3, and each side gear 32 is connected to each friction disc 4; a central motor 53 connected to the central gear 31 is disposed inside the sliding column 51.

[0034] In other words, the central motor 53 can drive each friction disc 4 to rotate synchronously.

[0035] In this embodiment, a sliding disk 54 is slidably disposed in the central column 5, and a push rod 24 is connected to the side of each sliding clamp 23 near the central column 5. A connecting rod 25 is hinged between the sliding disk 54 and each push rod 24.

[0036] In other words, by sliding the sliding disk 54 up and down, each of the sliding clamping blocks 23 can be moved to clamp or release each electric rolling ring housing. By moving the sliding disk 54 up and down in a single operation, all the push rods 24 can be driven synchronously through the linkage mechanism, thereby making all the sliding clamping blocks 23 move at the same time. This achieves rapid and synchronous clamping or releasing of all electric rolling rings, resulting in high operating efficiency and ensuring that the initial clamping force on each workpiece is basically consistent.

[0037] In this embodiment, a vibrating column 6 is slidably disposed in the base 1 below each clamping component 2, and a vibrating disk 7 is slidably disposed in the base 1, with each vibrating column 6 connected to the vibrating disk 7.

[0038] The vibratory plate 7 drives each vibratory column 6 to vibrate, thereby causing the electric rolling ring to vibrate, simulating the operation of the electric rolling ring under vibration conditions. This is crucial for evaluating its dynamic contact reliability, wear life, and signal stability. Furthermore, it can be performed simultaneously with rotational testing, enabling performance testing of the electric rolling ring under the combined conditions of "rotation + vibration" in a real-world scenario, thus enhancing the depth and value of the testing.

[0039] In this embodiment, multiple vibratory cylinders 9 are provided between the vibratory plate 7 and the bottom of the base 1.

[0040] The reciprocating extension and retraction of the vibrating cylinder 9 can excite the vibrating plate 7 to vibrate up and down.

[0041] In this embodiment, a spring 55 is provided on the central column 5 between the sliding disk 54 and the top cover 3.

[0042] When the top cover 3 moves downward and the friction disc 4 comes into contact with the electric rolling ring, it will push the spring 55 and the sliding disc 54 will also slide downward, so that each sliding clamp 23 will also clamp the electric rolling ring synchronously.

[0043] The friction disc 4 contacts and presses the rolling ring part of the electric rolling ring with a single action of moving the top cover 3 downward, and the force is transmitted through the spring 55 to push the sliding disc 54 downward, thereby linking all the clamping components 2 to clamp the electric rolling ring housing.

[0044] In this embodiment, multiple vertical vibration shafts 8 are fixed in the vibration plate 7, and the upper end of the vibration shaft 8 slides through the base 1 and is fixed in the sliding plate 54.

[0045] In other words, when the vibrating plate 7 vibrates upward, the vibrating column 6 pushes against the bottom of the electric rolling ring, and at the same time, the vibrating shaft 8 pushes the sliding plate 54 upward to slightly loosen the sliding clamp 23, so that the electric rolling ring has a certain amount of room to move, ensuring that the electric rolling ring can generate vibration.

[0046] In a static state, the clamping assembly 2 firmly secures the electric rolling ring. However, during vibration testing, the upward movement of the vibrating disk 7 synchronously and slightly lifts the sliding disk 54 via the vibrating shaft 8, thereby momentarily and slightly relaxing all the sliding clamps 23. This allows the electric rolling ring to be no longer rigidly clamped when subjected to the upward impact force of the bottom vibrating column 6, but instead to gain a small margin of movement. This allows for a realistic simulation of the electric rolling ring vibrating as a whole along with its mounting structure in a vibration environment. Without this design, the electric rolling ring would be "locked" by the clamps, the vibration could not be transmitted to the specimen itself, and the vibration test would fail.

[0047] This clamping force-following mechanism allows the electric rolling ring to be reliably fixed for rotational conductivity testing and released when needed for vibration testing, perfectly compatible with both testing modes and greatly enhancing the authenticity and value of the test.

[0048] In practice, the stator wire housing side and rotor wire rolling ring side of each electric rolling ring are connected to the corresponding interfaces of the testing instrument. The housing of the electric rolling ring is placed between the fixed clamping block 22 and the sliding clamping block 23 at the corresponding station, with the bottom surface of the housing in contact with the top of the vibrating column 6. The lifting cylinder 52 is activated to slowly lower the top cover 3. When the friction disc 4 is about to contact the rolling ring rotor surface of the electric rolling ring, the top cover 3 transmits pressure to the sliding disc 54 through the spring 55. The sliding disc 54 moves down and pushes all the push rods 24 through the connecting rod 25, thereby driving the sliding clamping blocks 23 at all stations to move synchronously towards the fixed clamping block 22, completing the one-time synchronous clamping of all electric rolling ring housings. The top cover 3 continues to lower until the friction disc 4 adheres to the rolling ring of each electric rolling ring with appropriate pressure. At this time, the housing of the electric rolling ring is clamped, and the rolling ring contacts the friction disc 4 and can be driven to rotate.

[0049] Rotation Test Setup: Set the required electrical parameters such as test current and resistance threshold on the external testing instrument. Set the rotation speed of the central motor 53 to correspond to the working speed of the rolling ring and the test duration on the equipment control panel. Vibration Test Setup: Set the vibration frequency and amplitude of the vibration cylinder 9 on the control panel; selectable test modes: rotation only, vibration only, or a combination of rotation and vibration.

[0050] The central motor 53 starts, driving the central gear 31, which in turn drives all the side gears 32 to rotate synchronously, thereby causing all the friction discs 4 to rotate synchronously, driving each electric rolling ring to rotate.

[0051] If the vibration mode is activated, the vibration cylinder 9 starts working, pushing the vibration plate 7 to move up and down reciprocally. The vibration plate 7 drives the vibration column 6 to lift the bottom of the electric rolling ring, applying vibration excitation. At the same time, the vibration plate 7 simultaneously lifts the sliding plate 54 through the vibration shaft 8, causing the sliding clamp 23 to retract slightly and momentarily. This ensures that the electric rolling ring housing is not rigidly locked during the vibration test and can obtain a small margin of movement, thus realistically simulating the vibration condition. The spring 55 plays a buffering and resetting role in this process, ensuring that the clamping force is restored after the vibration stops.

[0052] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A conductive rolling ring current resistance testing device, comprising a base (1), characterized in that, The base (1) has multiple clamping components (2) distributed around its circumference. A top cover (3) is provided above the base (1). A friction disc (4) is rotatably provided under the top cover (3) corresponding to the position of each clamping component (2). A central column (5) is fixed between the base (1) and the top cover (3). A sliding column (51) is slidably arranged inside the central column (5). The center of the top cover (3) is fixed on the sliding column (51). A lifting cylinder (52) connected to the sliding column (51) is provided inside the base (1). A central gear (31) is rotatably disposed at the center of the top of the top cover (3), and a plurality of side gears (32) meshing with the central gear (31) are rotatably disposed around the top of the top of the top cover (3), and each side gear (32) is connected to each friction disc (4); A vibrating column (6) is slidably disposed in the base (1) below each clamping assembly (2), and a vibrating disk (7) is slidably disposed in the base (1), with each vibrating column (6) connected to the vibrating disk (7). A sliding disk (54) is slidably disposed in the central column (5), and multiple vertical vibration shafts (8) are fixed in the vibration disk (7). The upper end of the vibration shaft (8) slides through the base (1) and is fixed in the sliding disk (54). A spring (55) is provided on the central column (5) between the sliding disk (54) and the top cover (3); The clamping assembly (2) includes two guide rails (21), a fixed clamping block (22) and a sliding clamping block (23) are provided between the two guide rails (21), and a push rod (24) is connected to the side of each sliding clamping block (23) near the central column (5). A connecting rod (25) is hinged between the sliding disk (54) and each push rod (24).

2. The conductive rolling ring current resistance testing device according to claim 1, characterized in that, A central motor (53) connected to the central gear (31) is provided inside the sliding column (51).

3. The conductive rolling ring current resistance testing device according to claim 1, characterized in that, Multiple vibratory cylinders (9) are provided between the vibratory plate (7) and the bottom of the base (1).

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