Dynamic balance detection mechanism of residual current transformer

Abstract

The utility model relates to the technical field of dynamic balance detection of electronic devices, and discloses a dynamic balance detection mechanism of a residual current transformer, which comprises a fixed bottom plate, the upper end of the fixed bottom plate is fixedly connected with a mainframe box, a system control box and a digital power box, and a current booster is arranged in the mainframe box; the mainframe is fixedly connected to the upper end of the mainframe box, an inclination mechanism is fixedly connected to the upper end of the mainframe, the mainframe is rotationally connected with a detection table through the inclination mechanism, a pitch changing mechanism is fixedly connected into the detection table, a rotating mechanism is arranged at the upper end of the detection table, and a detected workpiece is arranged at the upper end of the rotating mechanism. According to the three-dimensional space attitude adjusting device, the attitude of a three-dimensional space is automatically adjusted through linkage control of the inclination mechanism, the pitch changing mechanism and the rotating mechanism, feedback adjustment of dynamically optimizing and adjusting parameters can be conducted under control of the PLC control system, detection errors caused by installation deviation or mechanical deformation are eliminated, the positioning precision is improved, and the detection precision is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of dynamic balancing testing technology for electronic devices, and in particular to a dynamic balancing testing mechanism for residual current transformers. Background Technology

[0002] Existing dynamic balancing testing mechanisms for residual current transformers suffer from low adjustment efficiency, difficulty in eliminating dynamic interference, and insufficient testing coverage. A Chinese patent discloses a "dynamic balancing testing machine for hydraulic torque converters" (application number CN202320860042.7), capable of adjusting the spline position to ensure it falls completely to the required testing location. However, this mechanism's dynamic balancing testing is inefficient, time-consuming, and lacks precision. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a dynamic balance detection mechanism for residual current transformers, aiming to improve the problems of low efficiency of manual adjustment, difficulty in eliminating dynamic interference, and insufficient detection coverage in the existing technology. The main problems are that traditional detection relies on manual adjustment of position and angle, which is time-consuming and the accuracy is affected by the operator's experience. Fluctuations in test current, mechanical vibration, or installation errors can easily lead to signal distortion, affecting the accuracy of dynamic balance judgment. Single-direction detection cannot reflect the dynamic balance state of the whole angle and may miss local imbalance points.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dynamic balancing testing mechanism for a residual current transformer, comprising a fixed base plate, a main chassis, a system control box, and a digital power supply box fixedly connected to the upper end of the fixed base plate, and a current booster installed inside the main chassis; a main frame, fixedly connected to the upper end of the main chassis, and a tilting mechanism fixedly connected to the upper end of the main frame, the main frame being rotatably connected to a testing platform via the tilting mechanism, a pitch-changing mechanism fixedly connected inside the testing platform, a rotating mechanism installed at the upper end of the testing platform, and a workpiece to be tested installed at the upper end of the rotating mechanism.

[0005] Furthermore, the lower end of the fixed base plate is fixedly connected to casters, and the number of casters is six. This facilitates the movement of the dynamic balancing testing mechanism and improves its ease of use.

[0006] Furthermore, a shock-absorbing support leg is fixedly connected to the lower end of the fixed base plate. The position of the shock-absorbing support leg corresponds to that of the caster, and the number of the six shock-absorbing support legs is six. This facilitates shock absorption protection for the dynamic balancing testing mechanism and improves its protective capabilities.

[0007] Furthermore, a mounting rod is fixedly connected to the upper end of the system control box, and a PLC control system is fixedly connected to the upper end of the mounting rod. This facilitates the automatic control and detection of the mechanism.

[0008] Furthermore, the system control box is located on the left side of the main unit, and is connected to both the main unit and the PLC control system. This facilitates the internal connection and stable operation of the dynamic balancing testing mechanism.

[0009] Furthermore, the digital power supply box is located on the right side of the main unit chassis, and is connected to both the main unit chassis and the system control box. This facilitates the internal connections and stable operation of the dynamic balancing testing mechanism.

[0010] Furthermore, the testing platform is provided with a circular through hole, which is located at the center of the testing platform. This facilitates accurate testing.

[0011] Furthermore, the pitch-changing mechanism is fitted inside the circular through-hole and the rotating mechanism, which facilitates accurate detection.

[0012] This utility model has the following beneficial effects:

[0013] 1. In this utility model, the attitude of the three-dimensional space is automatically adjusted through the linkage control of the tilting mechanism, the pitch mechanism and the rotation mechanism. Under the control of the PLC control system, the feedback adjustment of the dynamic optimization adjustment parameters can be performed, eliminating the detection error caused by installation deviation or mechanical deformation, improving the positioning accuracy and ensuring the accuracy of detection.

[0014] 2. In this utility model, the mechanism solves the pain points of low efficiency, poor accuracy and insufficient coverage in traditional testing by comprehensively applying multi-degree-of-freedom collaborative control, high-precision signal injection and full-angle dynamic analysis algorithm, making dynamic balance testing more intelligent, efficient and accurate, and providing key technical support for the manufacturing of high-reliability power equipment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a dynamic balance detection mechanism for a residual current transformer proposed in this utility model, in a tilted detection state.

[0016] Figure 2 This is a three-dimensional structural diagram of a dynamic balance detection mechanism for a residual current transformer proposed in this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of a dynamic balance detection mechanism for a residual current transformer in an inclined detection state, as proposed in this utility model.

[0018] Figure 4 This is a cross-sectional structural diagram of a dynamic balancing detection mechanism for a residual current transformer proposed in this utility model.

[0019] Legend:

[0020] 1. PLC control system; 2. Tilting mechanism; 3. Pitch-changing mechanism; 4. Rotating mechanism; 5. Main frame; 6. Digital power supply box; 7. Current booster; 8. Workpiece to be measured; 9. Inspection table; 10. Circular through hole; 11. Mounting rod; 12. System control box; 13. Casters; 14. Vibration-damping legs; 15. Fixed base plate; 16. Main housing. Detailed Implementation

[0021] 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.

[0022] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a dynamic balancing detection mechanism for a residual current transformer, comprising a fixed base plate 15, with six casters 13 fixedly connected to the lower end of the fixed base plate 15, and six shock-absorbing legs 14 fixedly connected to the lower end of the fixed base plate 15, the shock-absorbing legs 14 corresponding to the positions of the casters 13. A main unit housing 16, a system control box 12, and a digital power supply box 6 are fixedly connected to the upper end of the fixed base plate 15. A current booster 7 is installed inside the main unit housing 16. A mounting rod 11 is fixedly connected to the upper end of the system control box 12, and a PLC control system 1 is fixedly connected to the upper end of the mounting rod 11. The system control box 12 is located to the left of the main unit housing 16 and is connected to both the main unit housing 16 and the PLC control system 1. The digital power supply box 6 is located to the right of the main unit housing 16 and is connected to both the main unit housing 16 and the system control box 12.

[0023] Specifically, before performing dynamic balancing testing, safety preparations and parameter settings are required. Confirm that the digital power supply box 6 is connected to a stable power source and check the grounding reliability. Power on the current booster 7 and PLC control system 1 to preheat, ensuring no abnormal alarms. Install the workpiece 8 to be tested onto the fixture of the main frame 5 to ensure structural stability and firmness. Check the degrees of freedom of movement of the tilting mechanism 2, the pitch mechanism 3, and the rotating mechanism 4. Remove surrounding obstacles. Start the PLC control system 1, enter the operation interface, select the dynamic balancing testing mode, and the system will automatically detect the status of each mechanism. After confirming there are no faults, it will enter standby mode. Input the specifications of the workpiece 8 to be tested into the PLC control interface, set the output current value of the current booster 7, set the rotation speed and rotation angle range of the rotating mechanism 4, perform benchmark calibration using a standard workpiece 8, and adjust the distance between the workpiece 8 and the detection coil to the preset calibration value using the pitch mechanism 3.

[0024] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The main frame 5 is fixedly connected to the upper end of the main housing 16. The upper end of the main frame 5 is fixedly connected to the tilting mechanism 2. The main frame 5 is rotatably connected to the detection table 9 through the tilting mechanism 2. The detection table 9 is fixedly connected to the pitch changing mechanism 3. The upper end of the detection table 9 is provided with the rotating mechanism 4. The upper end of the rotating mechanism 4 is provided with the workpiece 8 to be measured. The detection table 9 is provided with a circular through hole 10. The circular through hole 10 is located at the center of the detection table 9. The pitch changing mechanism 3 is fitted inside the circular through hole 10 and the rotating mechanism 4.

[0025] Specifically, during the dynamic balancing test, the tilting mechanism 2 adjusts the tilt angle of the workpiece 8 under test to ensure that its axis is aligned with the testing equipment. The pitch mechanism 3 fine-tunes the distance until the signal strength displayed on the PLC interface reaches the optimal range. The current booster 7 is then activated to output the preset test current, simulating the actual working conditions. The current waveform is monitored in real time through the workpiece 8 under test to ensure stability and no interference. The rotating mechanism 4 is then activated to make the residual current transformer rotate at a uniform speed. The PLC control system 1 synchronously collects the rotation angle, residual current output value, and displacement signal. The PLC performs spectrum analysis and phase comparison on the collected data to calculate the unbalance and phase shift. If the unbalance exceeds the threshold, the PLC marks the abnormal angle position.

[0026] Working Principle: The dynamic balancing detection mechanism of the residual current transformer is used to perform dynamic balancing detection on the residual current transformer. The PLC control system 1 is started and initializes each mechanism to ensure that the system is in the test state. The tilting mechanism 2 and the pitch mechanism 3 adjust the position and angle of the workpiece 8 under test according to the preset parameters. The rotating mechanism 4 rotates the workpiece 8 under test, and at the same time, the current booster 7 generates the test current. The output signal of the workpiece 8 under test is collected in real time and transmitted to the PLC control system 1. The PLC control system 1 analyzes the collected data and judges the dynamic balance state of the workpiece 8 under test. The system outputs a test report based on the analysis results, indicating whether the workpiece 8 under test meets the dynamic balance requirements.

[0027] 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 dynamic balance detecting mechanism of a residual current transformer, characterized by comprising: include: A fixed base plate (15) is fixedly connected to the upper end of the fixed base plate (15) to a main unit box (16), a system control box (12) and a digital power supply box (6). A current booster (7) is installed inside the main unit box (16). The main frame (5) is fixedly connected to the upper end of the main chassis (16). The upper end of the main frame (5) is fixedly connected to the tilting mechanism (2). The main frame (5) is rotatably connected to the detection table (9) through the tilting mechanism (2). The detection table (9) is fixedly connected to the pitch mechanism (3). The upper end of the detection table (9) is provided with a rotating mechanism (4). The upper end of the rotating mechanism (4) is provided with the workpiece to be tested (8).

2. A dynamic balancing detection mechanism of a residual current transformer according to claim 1, characterized in that: The lower end of the fixed base plate (15) is fixedly connected to casters (13), and the number of casters (13) is six.

3. A dynamic balancing detection mechanism of a residual current transformer according to claim 1, characterized in that: The lower end of the fixed base plate (15) is fixedly connected to a shock-absorbing support leg (14), the shock-absorbing support leg (14) corresponds to the position of the caster (13), and the number of the shock-absorbing support leg (14) is six.

4. A dynamic balancing detection mechanism of a residual current transformer according to claim 1, characterized in that: The upper end of the system control box (12) is fixedly connected to a mounting rod (11), and the upper end of the mounting rod (11) is fixedly connected to a PLC control system (1).

5. A dynamic balancing detection mechanism of a residual current transformer according to claim 1, characterized in that: The system control box (12) is located on the left side of the main unit box (16). The system control box (12) is connected to the main unit box (16) and the system control box (1) is connected to the PLC control system (1).

6. A dynamic balancing detection mechanism of a residual current transformer according to claim 1, characterized in that: The digital power supply box (6) is located on the right side of the main unit box (16). The digital power supply box (6) is connected to the main unit box (16) and the digital power supply box (6) is connected to the system control box (12).

7. A dynamic balancing detection mechanism of a residual current transformer according to claim 1, characterized in that: The testing platform (9) is provided with a circular through hole (10), which is located at the center of the testing platform (9).

8. A dynamic balancing detection mechanism of a residual current transformer according to claim 1, characterized in that: The pitch-changing mechanism (3) is fitted inside the circular through hole (10) and the rotating mechanism (4).

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