Static clearance measuring device for new energy decelerator

Abstract

The utility model discloses a new energy speed reducer static side gap measuring device relates to the field of new energy vehicles. The new energy speed reducer static side gap measuring device, include: adapter bar, digital display wrench, torque meter and electronic tilt angle appearance, the one end of adapter bar is used for with the input shaft spline of the new energy speed reducer to be measured and links, the inside integrated of digital display wrench has torque meter with electronic tilt angle appearance, is used for synchronous measurement input shaft's torque and deflection angle, the other end of adapter bar is tightly connected with digital display wrench. The new energy speed reducer static side gap measuring device, relies on torque meter and electronic tilt angle appearance of inside integration of digital display wrench, and angle measurement resolution can reach 0.1 degrees, and far more than traditional method.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicles, and in particular to a static backlash measuring device for new energy vehicle reducers. Background Technology

[0002] Currently, the new energy vehicle industry is gradually moving towards becoming the dominant force in the automotive market due to its technical characteristics of higher speed, greater torque, and lower background noise. As a core component of new energy vehicles, the rationality of the gear meshing backlash directly determines the transmission stability and gear life. Excessive backlash can easily cause knocking noises and gear damage, while insufficient backlash can lead to unstable transmission and tooth surface erosion. Therefore, accurate measurement of the static backlash of new energy reducers is crucial.

[0003] Current methods for measuring the static backlash of new energy vehicle reducers mainly rely on the feeler gauge method, lead weight method, and dial indicator method, which have three major drawbacks: First, the accuracy is insufficient. The angle resolution of traditional methods is generally greater than 0.5 degrees, which cannot meet the high-precision evaluation requirements of backlash for new energy reducers and makes it difficult to accurately identify the impact of small backlash deviations on the transmission system. Secondly, the data is presented in a single form, only outputting a single value for the backlash. This makes it impossible to verify the accuracy of the measurement results, analyze the dynamic characteristics of the reducer system such as torsional stiffness, or provide comprehensive data support for the optimization of the transmission system. Third, the operation is complex and the stability is poor. There is a lack of integrated precision measuring equipment. The measurement process relies on manual operation (such as feeler gauge insertion depth and dial indicator calibration). Human factors have a large impact on the results and the repeatability is poor. Utility Model Content

[0004] The purpose of this invention is to provide a static backlash measurement device for new energy reducers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a static backlash measuring device for a new energy reducer, comprising: an adapter rod, a digital wrench, a torque meter, and an electronic inclinometer; One end of the adapter rod is used to engage with the splined input shaft of the new energy reducer under test. The digital display wrench integrates the torque meter and the electronic inclinometer, which are used to simultaneously measure the torque and deflection angle of the input shaft. The other end of the adapter rod is securely connected to the digital display wrench.

[0006] Preferably, the torque meter is used to measure the torque value of the reducer input shaft.

[0007] Preferably, the electronic inclinometer is used to measure the deflection angle of the input shaft of the reducer.

[0008] Preferably, the digital display wrench has a built-in data acquisition system for synchronously acquiring and recording signals from the torque meter and the electronic inclinometer.

[0009] Preferably, a bolt is provided between the bottom end of the digital display wrench and the end of the adapter rod, and the digital display wrench is fixedly connected to the end of the adapter rod by means of the bolt.

[0010] Preferably, a washer is provided between the bolt and the bottom end of the digital display wrench.

[0011] The technical effects and advantages of this utility model are as follows: Relying on the torque meter and electronic inclinometer integrated inside the digital display wrench, the angle measurement resolution can reach 0.1 degrees, far exceeding traditional methods; actual test data shows that the error between the test value and the benchmark value of this device is controlled within 0.1°, which can accurately capture the tiny backlash deviation of new energy reducers and meet the high-precision measurement requirements. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a torque-angle XY side clearance curve obtained by this utility model.

[0013] In the diagram: 1. Adapter rod; 2. Bolt; 3. Digital wrench; 4. Torque meter; 5. Electronic inclinometer; 6. Gasket. Detailed Implementation

[0014] 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.

[0015] This invention provides, for example Figure 1 The static backlash measuring device for a new energy reducer shown includes: an adapter rod 1, a digital wrench 3, a torque meter 4, and an electronic inclinometer 5; One end of the adapter rod 1 is used to engage with the spline of the input shaft of the new energy reducer under test; The digital wrench 3 integrates a torque meter 4 and an electronic inclinometer 5, which are used to simultaneously measure the torque and deflection angle of the input shaft. The other end of the adapter rod 1 is securely connected to the digital display wrench 3.

[0016] Relying on the torque meter 4 and electronic inclinometer 5 integrated inside the digital wrench 3, the angle measurement resolution can reach 0.1 degrees, far exceeding traditional methods; actual test data shows that the error between the test value and the reference value of this device is controlled within 0.1°, which can accurately capture the small backlash deviation of the new energy reducer and meet the high-precision measurement requirements.

[0017] Furthermore, torque meter 4 is used to measure the torque value of the reducer input shaft.

[0018] Furthermore, the electronic inclinometer 5 is used to measure the deflection angle of the reducer input shaft.

[0019] Furthermore, the digital wrench 3 has a built-in data acquisition system for synchronously acquiring and recording signals from the torque meter 4 and the electronic inclinometer 5.

[0020] Furthermore, a bolt 2 is provided between the bottom end of the digital wrench 3 and the end of the adapter rod 1, and the digital wrench 3 is fixedly connected to the end of the adapter rod 1 by means of the bolt 2.

[0021] Furthermore, a washer 6 is provided between the bolt 2 and the bottom end of the digital wrench 3.

[0022] The adapter rod 1 is quickly snapped into the input shaft of the reducer via a spline, and then securely connected to the digital wrench 3 via fastening bolts 2 and washers 6, without the need for complex adjustments. During the measurement process, data acquisition, curve generation, and backlash calculation can be completed automatically by the device, reducing the interference of manual operation (such as feeler gauge insertion and removal, dial indicator reading) in traditional methods, improving the repeatability and reliability of measurement results, and reducing the dependence on the professional skills of operators.

[0023] Experimental examples and data validation: The comparison of the static backlash measurement results of the five new energy reducer assemblies in the table above shows that the error between the test value and the benchmark value using the device of this utility model is within 0.1°.

[0024] Working principle: First, the new energy reducer to be tested is fixed on the test bench, and the output end of the reducer is locked using hydraulic clamps or high-strength bolts. Then, one end of the adapter rod 1 is connected to the input shaft of the reducer by spline clamping, and the other end of the adapter rod 1 is screwed to the digital display wrench 3 by fastening bolt 2 and washer 6. The washer 6 can enhance the connection sealing and the anti-loosening effect of bolt 2, and avoid relative displacement between the digital display wrench 3 and the adapter rod 1 during the measurement process. The digital display wrench 3 has two core components pre-integrated: a torque meter 4 for real-time measurement of the torque of the reducer input shaft, and an electronic inclinometer 5 for real-time measurement of the input shaft deflection angle. At the same time, it has a built-in data acquisition system that can simultaneously receive and record the output signals of torque meter 4 and electronic inclinometer 5, completing the overall assembly of the device.

[0025] Manually rotate the digital wrench 3 at low speed to drive the input shaft to rotate 3-5 times, eliminating the influence of internal assembly backlash and uneven grease distribution in the reducer; then slowly apply a small torque to bring the input shaft to an initial state of "no angular deflection and no additional load". At this time, the built-in data acquisition system of the digital wrench 3 is used to "zero" the torque channel of the torque meter 4 and the angle channel of the electronic inclinometer 5 to ensure that the measurement reference is consistent.

[0026] Forward loading: Slowly rotate the digital wrench 3 handle to apply a forward torque to the input shaft. The torque value is monitored in real time by the torque meter 4 until the torque increases to the preset value (usually 5%~10% of the rated torque of the reducer). During this period, the electronic inclinometer 5 continuously records the angle change of the input shaft, and the data acquisition system synchronously stores the corresponding data of "torque-angle". Reverse loading: Gradually reduce the positive torque to zero, then slowly rotate the digital wrench 3 in the reverse direction to apply a reverse torque to the input shaft and increase it to the same preset value. During this process, the torque meter 4 and the electronic inclinometer 5 continue to collect signals until the data recording stops before the handle is released to apply force.

[0027] refer to Figure 2 The analysis is based on the "torque-angle XY curve" generated by the digital wrench 3 data acquisition system: When the torque changes from negative to zero (curve segment T0), the slope of this segment is the negative torsional stiffness of the system, which is calculated from the torque change of torque meter 4 and the angle change of electronic inclinometer 5. When the torque remains zero but the angle continues to change, the angle difference measured by the electronic inclinometer 5 during this stage (curve T1-T2 segment) is the total transmission backlash of the reducer from the input end to the fixed output end. When the torque changes from zero to positive (curve segment T3), the slope of this segment is the positive torsional stiffness of the system, and the calculation logic is the same as that for the negative stiffness.

[0028] Relying on the torque meter 4 and electronic inclinometer 5 integrated inside the digital wrench 3, the angle measurement resolution can reach 0.1 degrees, far exceeding traditional methods; actual test data shows that the error between the test value and the reference value of this device is controlled within 0.1°, which can accurately capture the small backlash deviation of the new energy reducer and meet the high-precision measurement requirements.

[0029] The built-in data acquisition system of the digital wrench 3 can simultaneously acquire the torque signal of the torque meter 4 and the angle signal of the electronic inclinometer 5, and generate a complete "torque-angle XY curve". It can not only directly quantify the side clearance through the T1-T2 segment of the curve, but also analyze the positive / negative torsional stiffness of the system through the slope of the T0 and T3 segments. This solves the shortcomings of traditional methods that only output a single value and cannot verify the accuracy of the measurement or analyze the dynamic response, and provides more comprehensive data support for the optimization of the reducer transmission system.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A static backlash measurement device for a new energy reducer, characterized in that, include: Adapter rod (1), digital wrench (3), torque meter (4) and electronic inclinometer (5); One end of the adapter rod (1) is used to engage with the spline of the input shaft of the new energy reducer under test; The digital wrench (3) integrates the torque meter (4) and the electronic inclinometer (5) for synchronously measuring the torque and deflection angle of the input shaft; The other end of the adapter rod (1) is fastened to the digital display wrench (3).

2. The static backlash measuring device for a new energy reducer according to claim 1, characterized in that, The torque meter (4) is used to measure the torque value of the input shaft of the reducer.

3. The static backlash measuring device for a new energy reducer according to claim 1, characterized in that, The electronic inclinometer (5) is used to measure the deflection angle of the input shaft of the reducer.

4. The static backlash measuring device for a new energy reducer according to claim 1, characterized in that, The digital wrench (3) has a built-in data acquisition system for synchronously acquiring and recording signals from the torque meter (4) and the electronic inclinometer (5).

5. The static backlash measuring device for a new energy reducer according to claim 1, characterized in that, A bolt (2) is provided between the bottom end of the digital wrench (3) and the end of the adapter rod (1), and the digital wrench (3) is fixedly connected to the end of the adapter rod (1) by means of the bolt (2).

6. The static backlash measuring device for a new energy reducer according to claim 5, characterized in that, A washer (6) is provided between the bottom end of the bolt (2) and the digital wrench (3).

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