A dynamic and static resistance and rotating torque synchronous measurement device for a conductive ring

Abstract

The utility model provides a kind of for the dynamic resistance and rotary torque synchronous measurement device of static resistance of electrically conductive ring, including bottom plate, torque measurement component is equipped on bottom plate, one end of torque measurement component is equipped with motor, the other end is equipped with resistance measurement component, the outside of resistance measurement component is also equipped with detachable oil baffle, the device is integrated torque measurement component and resistance measurement component, the synchronous test of bearing resistance and torque is realized, reduce clamping frequency, improve test efficiency and data consistency, level foot cooperation level bubble can accurately level bottom plate, guarantee test stability, effectively improve the accuracy and reliability of electrically conductive ring performance test, realize the synchronous acquisition and dynamic measurement of the static resistance, dynamic resistance and rotary torque three key parameters of electrically conductive ring in existing test technology.

Description

Technical Field

[0001] This utility model relates to the field of conductive ring performance measurement, and in particular to a device for synchronously measuring the dynamic and static resistance and rotational torque of conductive rings. Background Technology

[0002] The resistance characteristics and torque performance of conductive rings used for electrical erosion protection of EV drive motor bearings are core indicators that determine their protective effect and service reliability. The product performance needs to be evaluated through precise performance testing methods.

[0003] The existing testing technology system has the following significant shortcomings: First, the testing of resistance and torque parameters relies on two separate devices, and resistance measurements are mostly limited to static conditions, with a lack of methods for testing resistance characteristics under dynamic conditions. This separate testing mode not only leads to cumbersome operation procedures but also requires multiple clamping of the workpiece under test, reducing testing efficiency and easily causing positioning deviations due to repeated clamping, resulting in distorted test data that cannot objectively reflect the true performance of the conductive ring. Second, existing devices cannot effectively simulate the oil-immersion lubrication conditions of the conductive ring during actual service, leading to significant deviations between the test performance parameters and actual application scenarios, making it difficult to support precise product optimization. Third, the oil overflow generated during testing lacks effective collection and protection structures, easily causing contamination of key equipment components and a dirty working environment, increasing equipment maintenance costs and on-site management difficulties.

[0004] Therefore, there is an urgent need in this field to develop a highly integrated, real-service-condition-reproducible, and easy-to-operate device for synchronously measuring the static and dynamic resistance and torque of conductive rings, in order to overcome the pain points of existing testing technologies and provide accurate and reliable data support for the performance verification and technological iteration of conductive rings. Utility Model Content

[0005] The main purpose of this invention is to provide a device for synchronously measuring the static and dynamic resistance and rotational torque of a conductive ring, thereby enabling the synchronous acquisition and dynamic measurement of the three key parameters of the conductive ring: static resistance, dynamic resistance, and rotational torque, as described in existing testing technologies.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring, including a base plate, a torque measuring component on the base plate, a motor at one end of the torque measuring component, a resistance measuring component at the other end, and a detachable oil baffle on the outside of the resistance measuring component.

[0007] In the preferred embodiment, a leveling support is provided below the base plate, and multiple horizontal bubble levels are provided above the base plate. The leveling support and the horizontal bubble levels work together to level the base plate.

[0008] In the preferred embodiment, an oil guide groove is also provided on one side surface of the base plate. The oil guide groove is arranged around the lower part of the resistance measuring component and is used to collect the oil overflowing during oil injection.

[0009] In the preferred embodiment, a coupling one is provided between the torque measuring component and the motor, and a coupling two is provided between the torque measuring component and the resistance measuring component; The torque measuring assembly has a rotatable measuring shaft inside, which passes through the torque measuring assembly. One end of the measuring shaft is connected to coupling one, and the other end is connected to coupling two.

[0010] In the preferred embodiment, the torque measurement component includes a torque measuring instrument, with an instrument support located below the torque measuring instrument, and the bottom of the instrument support connected to the base plate. The measuring instrument shaft is rotatably installed inside the torque measuring instrument, and a power interface is provided on the top of the torque measuring instrument for connecting to an external power source.

[0011] In the preferred embodiment, the resistance measurement component includes a test bracket, a simulated motor housing on one side of the test bracket, and a simulated motor shaft inside the simulated motor housing; The workpiece to be tested is placed between the analog motor shaft and the analog motor housing.

[0012] In the preferred embodiment, the resistance measurement component includes two test brackets. A simulated motor housing is provided on one side of the test brackets. A simulated motor shaft is provided inside the simulated motor housing. The simulated motor shaft completely passes through the two test brackets and is rotatably connected to the two test brackets. The two test brackets are arranged to simulate the installation state of the motor shaft. The workpiece to be tested is placed between the analog motor shaft and the analog motor housing.

[0013] In the preferred embodiment, a rotating shaft bracket is also provided between the test bracket and the second coupling, and a bearing is provided in the rotating shaft bracket, with the bearing sleeved on the outside of the simulated motor rotating shaft; The shaft support is used to improve the stability of the analog motor shaft. The bottom of the shaft support is equipped with a balancing pad, which is used to compensate for the coaxial deviation of the analog motor shaft.

[0014] In the preferred embodiment, a probe holder is also provided on the other side of the test bracket. The probe holder is equipped with an adjustable length probe. One end of the probe abuts against the shaft of the analog motor, and the other end is used to connect to an external resistance measuring instrument. One end of the resistance measuring instrument is connected to the housing of the analog motor, and the other end is connected to the probe. The resistance measuring instrument is used to measure the resistance of the workpiece under test.

[0015] In the preferred embodiment, the top of the oil baffle is provided with a detachable top cover, the top cover is provided with an oil filling hole, and one side of the oil baffle is also provided with a wire outlet hole for the resistance measuring instrument to pass through the connecting wire. The simulated motor housing is provided with an oil filling hole for the housing. The oil filling hole for the housing and the oil filling hole for the top cover are arranged coaxially. The oil filling hole for the housing and the oil filling hole for the top cover are used to inject oil into the workpiece under test from the outside of the oil baffle to simulate the working environment. The bottom of the oil baffle is also provided with a folded edge, and the folded edge has mounting holes for bolt connection with the base plate. This invention provides a device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring, which has the following advantages: 1. This device is designed to simulate the oil immersion environment required in actual working conditions of conductive rings. An oil dripping device with adjustable dripping volume and frequency is installed directly above the test piece. At the same time, to prevent oil splashing and contamination of the measurement components and to ensure a clean testing environment, quick-release oil baffles are installed on the outside of the torque measurement component, resistance measurement component, and the test piece. The oil baffles are made of transparent oil-resistant material, which facilitates real-time observation during the testing process and is easy to install and remove without affecting the clamping and replacement of the test piece.

[0016] 2. This device integrates torque measurement and resistance measurement components. Through a unified drive and data acquisition system, it achieves synchronous acquisition and real-time analysis of three key parameters: static resistance, dynamic resistance, and rotational torque of the conductive ring to ground / shell. This effectively solves the data error problem caused by inconsistent operating conditions when measuring separately in traditional methods, and significantly improves the accuracy and consistency of measurement results. This device can be directly used for the performance verification and optimization testing of the conductive ring, providing accurate experimental data support for the improvement of the EV drive motor bearing electrolytic corrosion protection scheme. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is an isometric view of the measuring device of this utility model; Figure 2 This is an isometric view of the measuring device of this utility model from another direction; Figure 3 This is an isometric view of the measuring device of this utility model with the oil baffle removed; Figure 4 This is a wiring diagram of the resistance measuring instrument of this utility model; Figure 5 This is a front view of the measuring device of this utility model with the oil baffle removed; Figure 6 This is a cross-sectional schematic diagram of the measuring device of this utility model; Figure 7 This is an isometric view of the measuring device of this utility model, which has two test supports.

[0018] In the diagram: Base plate 1; Leveling support 101; Oil guide groove 102; Motor 2; Coupling 1 201; Torque measuring assembly 3; Instrument stand 301; Power interface 302; Torque measuring instrument 303; Measuring instrument shaft 304; Resistance measuring assembly 4; Resistance measuring instrument 401; Coupling 2 402; Rotating shaft support 403; Bearing 404; Test bracket 405; Simulated motor housing 406; Probe bracket 407; Leveling pad 408; Simulated motor rotating shaft 409; Workpiece to be tested 410; Housing oil filling hole 411; Probe 412; Oil baffle 5; Top cover 501; Folded edge 502; Top cover oil filling hole 503; Cable outlet hole 504. Detailed Implementation

[0019] Example 1 like Figure 1-6 As shown, a device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring includes a base plate 1, a torque measuring component 3 on the base plate 1, a motor 2 at one end of the torque measuring component 3, a resistance measuring component 4 at the other end, and a detachable oil baffle 5 on the outside of the resistance measuring component 4.

[0020] In the preferred embodiment, a leveling support 101 is provided below the base plate 1, and multiple horizontal bubbles are provided above the base plate 1. The leveling support 101 and the horizontal bubbles cooperate to level the base plate 1.

[0021] In a preferred embodiment, one side surface of the base plate 1 is also provided with an oil guide groove 102. The oil guide groove 102 is arranged around the lower part of the resistance measuring component 4 and is used to collect the oil overflowing during oil injection.

[0022] In the preferred embodiment, a coupling 201 is provided between the torque measuring component 3 and the motor 2, and a coupling 402 is provided between the torque measuring component 3 and the resistance measuring component 4. The torque measuring component 3 has a rotatable measuring shaft 304 inside. The measuring shaft 304 passes through the torque measuring component 3. One end of the measuring shaft 304 is connected to coupling 201 and the other end is connected to coupling 402.

[0023] In the preferred embodiment, the torque measuring component 3 includes a torque measuring instrument 303, and an instrument support 301 is provided below the torque measuring instrument 303. The bottom of the instrument support 301 is connected to the base plate 1. The measuring instrument shaft 304 is rotatably arranged inside the torque measuring instrument 303. The top of the torque measuring instrument 303 is provided with a power interface 302, which is used to connect to an external power source.

[0024] In a preferred embodiment, the resistance measurement component 4 includes a test bracket 405, a simulated motor housing 406 is provided on one side of the test bracket 405, and a simulated motor shaft 409 is provided inside the simulated motor housing 406; The workpiece 410 to be tested is placed between the analog motor shaft 409 and the analog motor housing 406.

[0025] In the preferred embodiment, a rotating shaft bracket 403 is also provided between the test bracket 405 and the coupling 402, and a bearing 404 is provided in the rotating shaft bracket 403, which is sleeved on the outside of the simulated motor rotating shaft 409. The shaft bracket 403 is used to improve the stability of the analog motor shaft 409. The bottom of the shaft bracket 403 is provided with a balancing pad 408, which is used to compensate for the coaxial deviation of the analog motor shaft 409.

[0026] In the preferred embodiment, a probe bracket 407 is also provided on the other side of the test bracket 405. An adjustable length probe 412 is provided on the probe bracket 407. One end of the probe 412 abuts against the analog motor shaft 409, and the other end is used to connect to an external resistance measuring instrument 401. One end of the resistance measuring instrument 401 is connected to the analog motor housing 406, and the other end is connected to the probe 412. The resistance measuring instrument 401 is used to measure the resistance of the workpiece 410 to be tested.

[0027] In the preferred embodiment, the top of the oil baffle 5 is provided with a detachable top cover 501, the top cover 501 is provided with a top cover oil injection hole 503, and the side of the oil baffle 5 is also provided with a wire outlet hole 504, the wire outlet hole 504 is used for the resistance measuring instrument 401 to pass through the connecting wire. The simulated motor housing 406 is provided with a housing oil injection hole 411. The housing oil injection hole 411 and the top cover oil injection hole 503 are arranged coaxially. The housing oil injection hole 411 and the top cover oil injection hole 503 are used to inject oil into the workpiece 410 to be tested from the outside of the oil baffle 5 to simulate the working environment. The bottom of the oil baffle 5 is also provided with a folded edge 502, and the folded edge 502 is provided with mounting holes for bolt connection with the base plate 1.

[0028] Example 2 Further explanation in conjunction with Example 1, such as Figure 1-6 The structure shown illustrates the following operating mode of a device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring: First, adjust the leveling feet 101 under the base plate 1. Observe the multiple horizontal bubbles above the base plate 1. Rotate the leveling feet 101 clockwise or counterclockwise to make the horizontal bubbles all in the center position, ensuring that the base plate 1 is in a horizontal state and avoiding the impact of the test accuracy due to the tilt of the base plate.

[0029] The workpiece 410 to be tested is assembled between the analog motor housing 406 and the analog motor shaft 409, ensuring that the workpiece 410 is installed in place without looseness. Then, the analog motor housing 406 is fixed on the test bracket 405. One end of the analog motor shaft 409 passes through the test bracket 405 and is installed in conjunction with the bearing 404 in the shaft bracket 403. The bearing 404 is sleeved on the outside of the analog motor shaft 409. The bottom of the shaft bracket 403 is connected to the base plate 1 through the balancing pad 408. The thickness of the balancing pad 408 is increased or decreased according to the coaxiality of the analog motor shaft 409 to compensate for coaxial deviation and ensure that the analog motor shaft 409 rotates smoothly.

[0030] The output shaft of motor 2 is connected to one end of the measuring instrument shaft 304 of torque measuring component 3 via coupling 201. The measuring instrument shaft 304 passes through the torque measuring instrument 303 of torque measuring component 3, and its other end is connected to the end of the analog motor shaft 409 away from the test bracket 405 via coupling 402. The torque measuring instrument 303 is fixed on the base plate 1 via the instrument bracket 301. The power interface 302 of the torque measuring instrument 303 is connected to an external power source to supply power to the torque measuring instrument 303.

[0031] The oil baffle 5 is placed over the outside of the resistance measuring assembly 4, and the folded edge 502 at the bottom of the oil baffle 5 is bolted to the base plate 1 through the mounting hole. At this time, the outer casing oil filling hole 411 on the analog motor housing 406 and the top cover oil filling hole 503 on the top cover 501 of the oil baffle 5 are arranged coaxially, and the connecting wire of the resistance measuring instrument 401 passes through the wire outlet hole 504 on one side of the oil baffle 5.

[0032] When the power supply to motor 2 is turned on, motor 2 starts to run. Its output shaft drives the measuring instrument shaft 304 of torque measuring component 3 to rotate through coupling 201. The measuring instrument shaft 304 then drives the analog motor shaft 409 to rotate through coupling 402. The analog motor shaft 409 drives the workpiece 410 to rotate. The outer ring is fixed on the analog motor housing 406, simulating the actual operating conditions of the motor.

[0033] The torque measuring instrument 303 monitors the torque change during the rotation of the measuring instrument shaft 304 in real time. Since the measuring instrument shaft 304 is rigidly connected to the analog motor shaft 409, the torque on the measuring instrument shaft 304 is consistent with the torque generated when the workpiece 410 is running. The torque measuring instrument 303 converts the collected torque data into an electrical signal and transmits it to an external data processing device through a data interface to realize the real-time display and recording of torque data.

[0034] Connect one end of the resistance meter 401 to the analog motor housing 406, and the other end to the adjustable length probe 412 on the probe holder 407. Adjust the length of the probe 412 so that one end of the probe 412 is tightly pressed against the surface of the analog motor shaft 409 to ensure good contact.

[0035] During the operation of the workpiece 410 under test, the resistance measuring instrument 401 forms a measurement circuit through the simulated motor housing 406, the workpiece 410 under test, the simulated motor shaft 409 and the probe 412, and uses Ohm's law to measure the resistance value of the workpiece 410 under test.

[0036] To simulate bearing lubrication conditions, lubricating oil can be injected through the top oil filling hole 503 of the top cover 501 of the oil baffle 5. The lubricating oil sequentially enters the simulated motor housing 406 through the top cover oil filling hole 503 and the outer housing oil filling hole 411, lubricating the workpiece 410 under test. Overflowing oil drips onto the base plate 1 during the injection process and is collected by the oil guide groove 102 around the resistance measuring component 4, preventing oil contamination of the device. The resistance measuring instrument 401 transmits the measured resistance data to an external data processing device in real time for synchronous recording and analysis along with torque data.

[0037] Disassemble the resistance meter 401 and replace it with a current meter. Keep one end of the current meter connected to the analog motor housing 406 and the other end connected to the probe 412. The probe 412 is still in close contact with the analog motor shaft 409, thus forming a current measurement circuit.

[0038] When the simulated motor shaft 409 is driven by motor 2, if the workpiece 410 under test has electrolytic corrosion or poor lubrication, a weak current will be generated in the circuit. The current measuring instrument can accurately capture this current signal, convert it into readable data, and transmit it to external equipment. Similarly, oil can be injected through the top cover oil injection hole 503 and the outer casing oil injection hole 411 to simulate the current changes under different lubrication conditions. The oil guide groove 102 collects the overflow oil simultaneously, realizing the testing and analysis of the current parameters during the operation of the motor bearing.

[0039] Example 2 Further explanation in conjunction with Example 1, such as Figure 7 In the preferred embodiment of the structure shown, the resistance measurement component 4 includes two test brackets 405. A simulated motor housing 406 is provided on one side of the test bracket 405. A simulated motor shaft 409 is provided inside the simulated motor housing 406. The simulated motor shaft 409 completely passes through the two test brackets 405. The simulated motor shaft 409 is rotatably connected to the two test brackets 405. The two test brackets 405 are arranged to simulate the installation state of the motor shaft. The workpiece 410 to be tested is placed between the analog motor shaft 409 and the analog motor housing 406.

[0040] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring, characterized in that: Includes a base plate (1), on which a torque measuring component (3) is provided. One end of the torque measuring component (3) is provided with a motor (2), and the other end is provided with a resistance measuring component (4). A detachable oil baffle (5) is also provided on the outside of the resistance measuring component (4).

2. The device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring according to claim 1, characterized in that: The bottom of the base plate (1) is provided with leveling feet (101), and the top of the base plate (1) is provided with multiple horizontal bubbles. The leveling feet (101) and the horizontal bubbles work together to level the base plate (1).

3. The device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring according to claim 1, characterized in that: An oil guide groove (102) is also provided on one side surface of the base plate (1). The oil guide groove (102) is arranged around the lower part of the resistance measuring component (4). The oil guide groove (102) is used to collect the oil overflowing during oil injection.

4. The device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring according to claim 1, characterized in that: A coupling 1 (201) is provided between the torque measuring component (3) and the motor (2), and a coupling 2 (402) is provided between the torque measuring component (3) and the resistance measuring component (4). The torque measuring assembly (3) has a rotatable measuring instrument shaft (304) inside. The measuring instrument shaft (304) passes through the torque measuring assembly (3). One end of the measuring instrument shaft (304) is connected to coupling one (201), and the other end is connected to coupling two (402).

5. The device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring according to claim 1, characterized in that: The torque measuring assembly (3) includes a torque measuring instrument (303), and an instrument bracket (301) is provided below the torque measuring instrument (303). The bottom of the instrument bracket (301) is connected to the base plate (1). The measuring instrument shaft (304) is rotatably arranged inside the torque measuring instrument (303). The top of the torque measuring instrument (303) is provided with a power interface (302), which is used to connect to an external power source.

6. The device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring according to claim 1, characterized in that: The resistance measurement assembly (4) includes a test bracket (405), a simulated motor housing (406) is provided on one side of the test bracket (405), and a simulated motor shaft (409) is provided inside the simulated motor housing (406). The workpiece to be tested (410) is placed between the analog motor shaft (409) and the analog motor housing (406).

7. The device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring according to claim 1, characterized in that: The resistance measurement assembly (4) includes two test brackets (405). A simulated motor housing (406) is provided on one side of the test bracket (405). A simulated motor shaft (409) is provided inside the simulated motor housing (406). The simulated motor shaft (409) completely passes through the two test brackets (405). The simulated motor shaft (409) is rotatably connected to the two test brackets (405). The two test brackets (405) are arranged to simulate the installation state of the motor shaft. The workpiece to be tested (410) is placed between the analog motor shaft (409) and the analog motor housing (406).

8. The device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring according to any one of claims 6-7, characterized in that: A rotating shaft bracket (403) is also provided between the test bracket (405) and the coupling two (402). A bearing (404) is provided in the rotating shaft bracket (403), and the bearing (404) is sleeved on the outside of the simulated motor rotating shaft (409). The shaft bracket (403) is used to improve the stability of the analog motor shaft (409). The bottom of the shaft bracket (403) is provided with a balancing pad (408), which is used to compensate for the coaxial deviation of the analog motor shaft (409).

9. The device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring according to claim 1, characterized in that: On the other side of the test bracket (405), there is also a probe bracket (407). The probe bracket (407) is equipped with an adjustable length probe (412). One end of the probe (412) abuts against the analog motor shaft (409), and the other end is used to connect to an external resistance measuring instrument (401). One end of the resistance measuring instrument (401) is connected to the housing (406) of the analog motor, and the other end is connected to the probe (412). The resistance measuring instrument (401) is used to measure the resistance of the workpiece (410) to be tested.

10. The device for synchronously measuring the dynamic and static resistance and rotational torque of a conductive ring according to claim 1, characterized in that: The top of the oil baffle (5) is provided with a removable top cover (501), the top cover (501) is provided with a top cover oil injection hole (503), and the side of the oil baffle (5) is also provided with a wire outlet hole (504), the wire outlet hole (504) is used for the resistance measuring instrument (401) to pass through the connecting wire; The housing (406) of the simulated motor is provided with an oil filling hole (411). The oil filling hole (411) and the top cover oil filling hole (503) are arranged coaxially. The oil filling hole (411) and the top cover oil filling hole (503) are used to inject oil into the workpiece (410) to be tested from the outside of the oil baffle (5) to simulate the working environment. The bottom of the oil baffle (5) is also provided with a folded edge (502), and the folded edge (502) is provided with mounting holes for bolt connection with the base plate (1).

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