Detection equipment for overhauling automobile clutch motor

Abstract

The utility model provides detection equipment for overhauling an automobile clutch motor. The detection equipment comprises a supporting table; a motor fixing seat; the motor fixing seat is movably mounted on the supporting table; the motor fixing seat is provided with a rotating speed measuring module; a detection support; a sticking shaft is arranged on the detection support; a strain gauge is pasted on the pasting shaft; a coupling is arranged at the free end of the pasting shaft; the coupler is connected with the output end of the motor to be detected; the detection support is provided with a signal processing module which is connected with the strain gauge. A controller; the controller is respectively connected with the motor to be measured, the rotating speed measuring module and the signal processing module; a power supply module; and the power supply module is connected with the controller. Parameters such as torque and rotating speed output by the motor to be detected are detected, and whether the clutch motor is overhauled to be qualified or not can be calculated and analyzed by combining input voltage and current parameters, so that off-vehicle detection of the motor is realized.

Description

Technical Field

[0001] This utility model belongs to the field of automotive clutch repair technology, and specifically relates to a testing device for repairing automotive clutch motors. Background Technology

[0002] The car clutch, located in the flywheel housing between the engine and transmission, is a component in the car's transmission system directly connected to the engine. When starting the car, gradually disengaging the clutch allows the engine's power to be smoothly transmitted to the transmission system, enabling the vehicle to start slowly and preventing sudden lurching. During gear shifting, the connection between the engine and transmission system is briefly severed, allowing the gears to easily engage or disengage, enabling smooth gear changes. When the car encounters significant resistance while driving, or when improper operation causes a sharp drop in engine speed, the clutch will automatically slip to prevent the engine from stalling due to overload and to protect the engine and transmission components from damage caused by excessive impact.

[0003] As automotive products become increasingly automated and intelligent, some clutches have achieved electric automatic drive functionality. The automotive clutch motor, more accurately referring to the motor used in automatic clutch systems, is a key component of the automatic clutch actuator, primarily used for automatically controlling clutch engagement and disengagement, and is commonly found in automatic clutch manual transmission (AMT) vehicles. With the increase in this type of vehicle, the number of faulty clutch motors is also increasing. However, after repairing the motor, it needs to be reinstalled in the vehicle's clutch system to test its functionality, which is not only time-consuming and labor-intensive, but also inconvenient, and limits the tests that can be performed on the vehicle.

[0004] Therefore, a testing device is needed for the repair of automotive clutch motors. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for the repair of automotive clutch motors, thereby overcoming the problem of inconvenient testing after clutch motor repair in automotive repair shops. The specific technical solution is as follows:

[0006] A testing device for overhauling automotive clutch motors, comprising:

[0007] Support platform;

[0008] Motor mounting bracket; the motor mounting bracket is movably mounted on the support platform for mounting and fixing the motor under test; the motor mounting bracket is equipped with a speed measurement module;

[0009] A testing support is provided; a bonding shaft is provided on the testing support; a strain gauge is bonded to the bonding shaft; a coupling is provided on the free end of the bonding shaft; the coupling is connected to the output end of the motor to be tested; a signal processing module is provided on the testing support and connected to the strain gauge.

[0010] The controller is connected to the motor under test, the speed measurement module, and the signal processing module, respectively.

[0011] A power module; the power module is connected to the controller to provide operating power.

[0012] Furthermore, the strain gauge is set at a 45-degree angle to the axis of the bonding shaft.

[0013] Furthermore, sliding grooves are provided on both sides of the support platform; the two sides of the motor mounting base are movably connected to the sliding grooves by bolts.

[0014] Furthermore, guide blocks are provided on both sides of the motor mounting base; the guide blocks are located in the sliding groove to guide the movement of the motor mounting base.

[0015] Furthermore, guide blocks are provided on the front and rear surfaces of each side of the motor mounting base.

[0016] Furthermore, the rotational speed measurement module is a photoelectric detection module.

[0017] Furthermore, the signal processing module includes a bridge circuit, an amplifier circuit, and a filter circuit; the strain gauge is connected to the bridge circuit to convert the change in the strain gauge resistance into a voltage signal output; the amplifier circuit is connected to both the bridge circuit and the filter circuit to amplify the weak voltage signal output by the bridge circuit and send it to the filter circuit to remove noise and interference from the signal, thereby improving signal quality.

[0018] Furthermore, the power line connecting the controller to the motor under test is equipped with a current sensor and a voltage sensor; the current sensor and the voltage sensor are respectively connected to the controller.

[0019] Furthermore, the controller includes a controller unit, a signal acquisition module, a power conversion module, a motor drive module, and a human-machine interface module; the controller unit is connected to the signal acquisition module, the power conversion module, the motor drive module, and the human-machine interface module respectively; the signal acquisition module is connected to the current sensor, the voltage sensor, the filter circuit, and the speed measurement module respectively to acquire the current, voltage, torque, and speed parameters of the motor under test; the power conversion module is connected to the power module, the controller unit, the signal acquisition module, the motor drive module, and the human-machine interface module respectively to convert external power and provide working power to each module.

[0020] Furthermore, the coupling has an inner spline sleeve hole at one end connected to the output end of the motor under test, so as to connect with the outer spline shaft on the output end of the motor under test.

[0021] Compared with existing technologies, this utility model has the following beneficial effects:

[0022] 1. In this utility model, the motor under test is fixed by a motor mounting bracket, the power supply to the motor under test is controlled by a controller, and the output parameters such as torque and speed of the motor under test are detected. At the same time, combined with the input voltage and current parameters, the clutch motor can be calculated and analyzed to determine whether it has passed the inspection. This overcomes the problem of inconvenience in testing the clutch motor after it has been repaired in automobile repair shops, and realizes the off-vehicle testing of the motor.

[0023] 2. In this utility model, the support platform and the motor mounting base are configured to be position-adjustable in order to be compatible with different models of motors. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 This is a top-view axonometric structural diagram of a testing device used for overhauling automotive clutch motors.

[0026] Figure 2 This is a bottom-view axonometric structural diagram of a testing device used for overhauling automotive clutch motors.

[0027] Explanation of main reference numerals: Support platform 1, Support foot 11, Sliding groove 12, Controller 2, Control panel 21, Display screen 22, Detection support 3, Signal processing module 31, Strain gauge 32, Adhesive shaft 33, Coupling 34, Motor mounting base 4, Speed ​​measurement module 41, Guide block 42, Motor under test 5. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0032] Example 1

[0033] like Figures 1 to 2 The diagram shows a structural schematic of a testing device for overhauling automotive clutch motors, comprising:

[0034] Support platform 1; the support platform 1 is used to support the entire equipment; the support platform 1 has four support legs 11, and each support leg 11 has an adjustable support foot (not shown in the figure) at its bottom to adjust the height of the support platform 1; the adjustable support foot is connected to the support leg 11 by a thread;

[0035] Motor mounting base 4; the motor mounting base 4 is movably mounted on the support platform 1 for mounting and fixing the motor 5 to be tested; the motor mounting base 4 is provided with a speed measurement module 41; furthermore, the motor mounting base 4 is composed of a base plate and a vertical plate connected to each other perpendicularly, the base plate is movably mounted on the support platform 1, the first surface of the vertical plate is provided with several mounting holes for mounting the motor 5 to be tested; the vertical plate is provided with a first through hole connecting the first surface and the second surface of the vertical plate for the output end of the motor to be tested to pass through; the mounting holes on the first surface are determined according to the fixing holes of the motor 5 to be tested, and are not limited here;

[0036] A testing support 3 is installed opposite to the second side of a motor mounting base 4. The testing support 3 has a bonding shaft 33 on its side near the motor mounting base 4. A strain gauge 32 is bonded to the bonding shaft 33. A coupling 34 is provided on the free end of the bonding shaft 33. The coupling 34 is connected to the output end of the motor to be tested. A signal processing module 31 is provided on the testing support 3 and connected to the strain gauge 32.

[0037] Controller 2; the controller 2 is connected to the motor under test 5, the speed measurement module 41 and the signal processing module 31 respectively;

[0038] Power module (not shown in the figure); the power module is connected to the controller 2 to provide operating power.

[0039] In specific implementation, the strain gauge 32 is positioned at a 45-degree angle to the axis of the adhesive shaft 33. The strain gauge 32 is adhered to the surface of the shaft along a direction at ±45° to the axis. This is because when the shaft is subjected to torque, the maximum shear stress is generated in the direction at ±45° to the axis, and the corresponding normal stress is also relatively large, which can cause the strain gauge 32 to produce obvious measurable strain.

[0040] To improve the accuracy and reliability of measurements, multiple strain gauges 32 are attached symmetrically along the circumference of the shaft to form a Wheatstone bridge or other measurement circuits, thereby reducing the influence of measurement errors and factors such as temperature. For example, in some high-precision torque measurements, four strain gauges 32 are evenly attached to the circumference of the shaft to form a full-bridge circuit.

[0041] Furthermore, the bonding shaft 33 is cylindrical and made of high-strength alloy steel or similar materials to ensure sufficient strength and rigidity when transmitting torque, while also generating measurable strain. The strain gauge 32 is a rectangular thin sheet, composed of a sensitive grid, substrate, adhesive, bonding agent, and lead wires. The sensitive grid is the core component of the strain gauge 32, typically made of metal foil or semiconductor material; its resistance changes when the shaft experiences strain. The substrate supports the sensitive grid and provides insulation and strain transmission; it is generally made of materials such as plastic film. The adhesive covers the sensitive grid to protect it from external environmental influences. The bonding agent firmly attaches the strain gauge 32 to the shaft surface, and the lead wires connect to the measurement circuit.

[0042] In practice, coupling 34 connects the adhesive shaft 33 to the output shaft of the motor 5 under test, ensuring effective torque transmission. It also includes protective devices such as a protective cover to protect the internal structure from external environmental influences, and mounting brackets to secure the entire measuring device. This ensures a reliable connection between the torque measuring device and the measured shaft system, allowing torque to be smoothly transmitted to the measuring shaft, while providing necessary protection and mounting support for the device.

[0043] In specific implementation, the end of the coupling 34 connected to the output end of the motor under test 5 is provided with an internal spline sleeve hole for connection with the external spline shaft on the output end of the motor under test 5; if the output end of the motor under test 5 has other structures, a corresponding mating structure is also designed on the end of the coupling 34 connected to the output end of the motor under test 5 to facilitate torque transmission. Furthermore, the other end of the coupling 34 is provided with a sleeve hole for fitting onto the free end of the adhesive shaft 33, and the fixing method can be a key, spline, or bolt.

[0044] In specific implementation, sliding grooves 12 are provided on both sides of the support platform 1; the two sides of the motor mounting base 4 are movably connected to the sliding grooves 12 by bolts, that is, after loosening the bolts, the motor mounting base 4 can move on the support platform 1 to adjust the position of the motor mounting base 4. Since the detection support 3 is fixed, the position of the motor mounting base 4 can be adjusted to be applicable to the motors 5 under test with different output shaft lengths.

[0045] In a specific implementation, guide blocks 42 are provided on both sides of the motor mounting base 4; the guide blocks 42 are located in the sliding groove 12 to guide the movement of the motor mounting base 4.

[0046] In specific implementation, guide blocks 42 are provided on the front and rear surfaces of each side of the motor mounting base 4. The function of the guide blocks 42 is to ensure that the motor mounting base 4 does not rotate during movement, to ensure the parallelism between the motor mounting base 4 and the detection support 3, and thus to ensure accurate torque measurement.

[0047] In specific implementation, the speed measurement module 41 is a photoelectric detection module. During operation, a reflective marker is attached to the output shaft of the motor 5 under test. The photoelectric detection module sensor emits a laser beam onto the rotating shaft. For each revolution, a reflected beam is collected, and the speed is calculated by measuring the frequency or time interval of the reflected beam. For example, LUYOR's ROLS-5PW laser speed sensor can be used to measure the speed of rotating equipment such as motors, spindles, and fans, offering high measurement accuracy, especially suitable for high-speed rotating rotors. When using the speed measurement module 41, the position of the motor mounting base 4 needs to be adjusted first so that the output end of the motor 5 under test is separated from the coupling 34. This ensures that the speed measurement is not restricted by the coupling 34. Furthermore, the speed measurement module 41 is mounted on the upper end of the motor mounting base 4.

[0048] In specific implementation, the signal processing module 31 includes a bridge circuit, an amplifier circuit, and a filter circuit; the strain gauge 32 is connected to the bridge circuit to convert the change in resistance of the strain gauge 32 into a voltage signal output; the amplifier circuit is connected to both the bridge circuit and the filter circuit to amplify the weak voltage signal output by the bridge circuit and send it to the filter circuit to remove noise and interference from the signal, thereby improving signal quality. The specific circuit structure of each circuit can refer to existing mature solutions.

[0049] In a specific implementation, a current sensor and a voltage sensor are provided on the power line connecting the controller 2 and the motor under test 5; the current sensor and the voltage sensor are respectively connected to the controller 2.

[0050] In specific implementation, the controller 2 includes a controller 2 unit, a signal acquisition module, a power conversion module, a motor drive module, and a human-machine interface module. The controller 2 unit is connected to the signal acquisition module, the power conversion module, the motor drive module, and the human-machine interface module. The signal acquisition module is connected to the current sensor, the voltage sensor, the filter circuit, and the speed measurement module 41 to acquire the current, voltage, torque, and speed parameters of the motor 5 under test. The power conversion module is connected to the power module, the controller 2 unit, the signal acquisition module, the motor drive module, and the human-machine interface module to convert external power and provide working power to each module.

[0051] The human-machine interface module includes a display and control panel 21. The display screen 22 displays various motor detection parameters, such as torque, speed, current, and voltage, allowing operators to easily observe the motor's operating status and performance indicators in real time. It typically uses an LCD screen 22, providing clear and intuitive information. The control panel 21 contains various buttons, knobs, and switches, allowing operators to start and stop the motor, set detection parameters, and control the detection process.

[0052] Controller Unit (MCU) (not shown in the diagram). The core of Controller 2 is its core processing and control capabilities, such as common 8-bit, 16-bit, and 32-bit microcontrollers, like the STM32 series 32-bit microcontrollers. It is responsible for executing pre-programmed control algorithms, processing signals collected from various sensors, and generating instructions to control the motor's operation based on the algorithm logic. For example, in motor speed control applications, the MCU, based on the signal feedback from the speed sensor, performs calculations using a PID control algorithm and outputs corresponding control signals to adjust the motor speed. Program Storage: Built-in flash memory is used to store the control program code, ensuring that Controller 2 operates according to the set logic.

[0053] The signal acquisition module (not shown in the diagram) performs the following steps: Analog signal acquisition: Using an analog-to-digital converter (ADC), it converts continuously changing analog signals from various analog sensors (such as temperature and pressure sensors) into digital signals that the MCU can process. For example, a thermistor temperature sensor outputs a temperature-related analog voltage signal, which is converted into a digital value by the ADC for the MCU to read. Digital signal acquisition: It can directly receive digital signals from digital sensors (such as photoelectric encoders) or receive signals from external digital devices through a digital input interface. For example, the pulse signal output by an incremental photoelectric encoder can be directly captured by the MCU's timer module for measuring motor speed and position.

[0054] Power conversion module (not shown in the diagram). To meet the different power supply needs of various parts of controller 2, the power conversion module converts external input power (such as the voltage provided by a DC power adapter) into a suitable stable DC voltage through various voltage conversion chips (such as linear regulators and switching regulators). For example, it converts a 12V input to 5V and 3.3V to power components such as the MCU and sensors. The power conversion module has overcurrent, overvoltage, and undervoltage protection functions to prevent damage to controller 2 from abnormal power conditions. For example, when the input voltage is too high, the overvoltage protection circuit automatically cuts off the power supply or adjusts the voltage to a safe range.

[0055] Motor drive module (not shown in the diagram). Since the control signal output from the MCU has low power and cannot directly drive the motor, the motor drive module uses power electronic devices (such as MOSFETs and IGBTs) to amplify the weak electrical signal output by the MCU into a strong electrical signal capable of driving the motor. For example, the L298N motor drive chip can receive the control signal from the MCU and provide sufficient drive current for the DC motor. Different driving methods are used depending on the motor type. Pulse width modulation (PWM) control is often used for DC motors to regulate the motor speed; for stepper motors, a specific sequence of pulses needs to be output to control its rotation angle and speed.

[0056] For structures not detailed in the above scheme or not shown in the diagram, existing schemes that achieve the same function can be adopted.

[0057] In summary, this application provides a testing device for the repair of automotive clutch motors, comprising: a support platform; a motor mounting base; the motor mounting base being movably mounted on the support platform for mounting and fixing the motor under test; the motor mounting base being equipped with a speed measurement module; a testing support; the testing support being equipped with an adhesive shaft; strain gauges being adhesively attached to the adhesive shaft; a coupling being provided at the free end of the adhesive shaft; the coupling being connected to the output end of the motor under test; a signal processing module being provided on the testing support and connected to the strain gauges; a controller; the controller being connected to the motor under test, the speed measurement module, and the signal processing module respectively; and a power supply module; the power supply module being connected to the controller to provide operating power. In this invention, the motor under test is fixed by the motor mounting base, the power supply to the motor under test is controlled by the controller, and the output torque, speed, and other parameters of the motor under test are detected. Simultaneously, combined with the input voltage and current parameters, the system can calculate and analyze whether the clutch motor has passed repair, overcoming the inconvenience of testing the clutch motor after repair in automotive repair shops, and realizing off-vehicle testing of the motor. In this invention, the support platform and the motor mounting base are designed to be position-adjustable to accommodate different motor models.

[0058] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A testing device for overhauling automotive clutch motors, characterized in that, include: Support platform; Motor mounting bracket; The motor mounting base is movably mounted on the support platform for mounting and fixing the motor under test; the motor mounting base is equipped with a speed measurement module. A testing support is provided; a bonding shaft is provided on the testing support; a strain gauge is bonded to the bonding shaft; a coupling is provided on the free end of the bonding shaft; the coupling is connected to the output end of the motor to be tested; a signal processing module is provided on the testing support and connected to the strain gauge. The controller is connected to the motor under test, the speed measurement module, and the signal processing module, respectively. Power module; The power module is connected to the controller to provide operating power.

2. The testing equipment for overhauling automotive clutch motors according to claim 1, characterized in that, The strain gauge is set at a 45-degree angle to the axis of the bonding shaft.

3. The testing equipment for overhauling automotive clutch motors according to claim 1, characterized in that, The support platform has sliding grooves on both sides; the motor mounting base is movably connected to the sliding grooves on both sides by bolts.

4. The testing equipment for overhauling automotive clutch motors according to claim 3, characterized in that, Guide blocks are provided on both sides of the motor mounting base; the guide blocks are located in the sliding groove to guide the movement of the motor mounting base.

5. The testing equipment for overhauling automotive clutch motors according to claim 4, characterized in that, Guide blocks are provided on the front and rear surfaces of each side of the motor mounting base.

6. The testing equipment for overhauling automotive clutch motors according to claim 1, characterized in that, The rotational speed measurement module is a photoelectric detection module.

7. The testing equipment for overhauling automotive clutch motors according to claim 1, characterized in that, The signal processing module includes a bridge circuit, an amplifier circuit, and a filter circuit. The strain gauge is connected to the bridge circuit to convert the change in the strain gauge resistance into a voltage signal output. The amplifier circuit is connected to both the bridge circuit and the filter circuit to amplify the weak voltage signal output by the bridge circuit and send it to the filter circuit to remove noise and interference from the signal, thereby improving signal quality.

8. The testing equipment for overhauling automotive clutch motors according to claim 7, characterized in that, The power line connecting the controller to the motor under test is equipped with a current sensor and a voltage sensor; the current sensor and the voltage sensor are respectively connected to the controller.

9. The testing equipment for overhauling automotive clutch motors according to claim 8, characterized in that, The controller includes a controller unit, a signal acquisition module, a power conversion module, a motor drive module, and a human-machine interface module. The controller unit is connected to the signal acquisition module, the power conversion module, the motor drive module, and the human-machine interface module. The signal acquisition module is connected to the current sensor, the voltage sensor, the filter circuit, and the speed measurement module to acquire the current, voltage, torque, and speed parameters of the motor under test. The power conversion module is connected to the power module, the controller unit, the signal acquisition module, the motor drive module, and the human-machine interface module to convert external power and provide operating power to each module.

10. The testing equipment for overhauling an automotive clutch motor according to any one of claims 1 to 9, characterized in that, The coupling has an inner spline sleeve hole at one end that connects to the output end of the motor under test, so as to connect with the outer spline shaft on the output end of the motor under test.

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