Relay core plane and yoke plane center line relationship testing device and method
By using a relay moving component and a laser displacement sensor to collect data and calculate the relationship between the centerline of the yoke plane and the core plane, the problem that existing instruments cannot simultaneously measure angles and distances is solved, thus improving testing efficiency and relay debugging efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENYANG RAILWAY SIGNAL
- Filing Date
- 2023-12-06
- Publication Date
- 2026-05-29
AI Technical Summary
Existing testing instruments cannot simultaneously and accurately measure the angle and perpendicular distance between the relay yoke plane and the core plane, and they also suffer from problems such as small testing range, low efficiency, and high cost.
It employs a relay-driven moving component, a centerline height measuring component, and a control and calculation component, including a dual-slider guide rail slide, a movable laser displacement sensor, and a control module. It calculates the relationship between the yoke plane and the centerline of the core plane by using a stepper motor drive and data acquisition by the laser displacement sensor.
It enables simple and accurate measurement of the plane centerline relationship of the relay, improves testing efficiency and consistency of relay output characteristics, reduces adjustment amount, and lowers testing costs.
Smart Images
Figure CN117629068B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of relay testing technology, and in particular relates to a device and method for testing the relationship between the center lines of the relay core plane and the yoke plane. Background Technology
[0002] Because railway signal snap-action relays have a symmetrical structure, the relative position of the yoke plane and the core plane can be simply represented by the centerline relationship between their centerlines. The core and yoke are crucial components of the relay's electromagnetic system. The relationship between the centerlines of the core and yoke planes includes the angle between their centerlines and the perpendicular distance from the edge of the yoke centerline to the core centerline. For some relays, this angle and perpendicular distance significantly affect the relay's output characteristics. Testing the centerline relationship is used for assembly parameter control during intermediate stages of relay production. For some relays, the centerline relationship between the core and yoke planes has a significant impact on the relay's electromagnetic characteristics in the engaged state. A good centerline relationship can effectively reduce relay adjustment, improve relay debugging efficiency, and enhance the consistency of relay output characteristics.
[0003] Currently, in the field of relay testing, instruments capable of testing the planar relationship between the yoke and the core include two-dimensional image measuring instruments and ultra-depth-of-field microscopes. These two instruments have the following problems in testing the planar relationship between the relay yoke and the core:
[0004] Super depth-of-field microscopes have built-in depth testing functions, primarily used to measure the flatness of part surfaces. While they can achieve depth imaging of the yoke plane and core plane, they can only determine the height difference between a point on the yoke plane and a point on the core plane. They cannot perform core plane fitting or angle testing between the core plane and the yoke plane. Furthermore, their testing range is too small to simultaneously test both planes, and errors can easily occur during plane switching. For production, these testing devices are too bulky, inefficient, and costly. Two-dimensional image measuring instruments test the projections of the relay yoke plane and core plane, not the location of critical relay parameters. Their test results are limited by the roughness of the yoke and core planes and the relay's tilt angle. Using them in production is inefficient and costly. Summary of the Invention
[0005] In order to test the relationship between the center lines of the relay plane, this invention provides a testing device and method for the relationship between the center lines of the core plane and the yoke plane of a railway signal clashing relay. This invention is simple to operate, has high accuracy, and improves the efficiency of relay debugging and the consistency of relay output characteristics.
[0006] To achieve the above objectives, the main technical solutions adopted by the present invention include:
[0007] A testing device for the relationship between the centerlines of the relay core plane and the yoke plane includes a relay movement component, a centerline height measurement component, and a control and calculation component. The relay movement component includes a double-slider guide rail slide, which moves the relay under test along the guide rail. The double-slider guide rail slide is driven by a stepper motor. The centerline height measurement component includes a movable laser displacement sensor located directly above the core plane and yoke plane of the relay under test. The control and calculation component includes a power supply module, a control module, a motor driver, and a distance measurement device from the edge of the yoke centerline to the core plane. The system includes a vertical distance indicator from the centerline of the yoke plane, an angle indicator between the centerline of the yoke plane and the centerline of the core plane, a reset button, a trigger button, a stepper motor connected to the power module and motor driver, a motor driver connected to the control module and power module, a vertical distance indicator from the edge point of the yoke centerline to the centerline of the core plane, an angle indicator between the centerline of the yoke plane and the centerline of the core plane connected to the control module and power module, a laser displacement sensor connected to the control module and power module, a reset button and a trigger button connected to the control module, and the control module connected to the power module.
[0008] Furthermore, the dual-slider guide rail slide includes a screw, two sliders, a relay plug plate, a fixing plate, and an adapter plate. The two sliders are connected to the same screw through threaded holes. As the screw rotates, the two sliders move synchronously on the screw. The adapter plate, the fixing plate, and the relay plug plate are fixedly installed above the two sliders in sequence.
[0009] Furthermore, the power module is connected to a 220V external power source via a power cord.
[0010] Furthermore, the laser displacement sensor is mounted on the XZ two-dimensional slide via a sensor adapter plate. The X-axis and Z-axis of the XZ two-dimensional slide are perpendicular to each other and perpendicular to the X-axis and Z-axis of the relay movement direction. The XZ two-dimensional slide is fixed on the base plate via a slide base.
[0011] Furthermore, the dual-slider guide rail slide and the control and computing components are all fixed on the base plate.
[0012] The method for testing the relationship between the centerline of the relay core plane and the yoke plane using the aforementioned device involves the control module sending pulses to the stepper motor. The stepper motor rotates, causing the two sliders on the double-slider guide rail to move. Simultaneously, the control system calculates the slider stroke by statistically analyzing the pulse signals. Whenever the slider stroke reaches an integer multiple of the sampling point spacing set in the program, the current slider stroke output value and the laser displacement sensor output value are collected as the x-coordinate and y-coordinate of a point on the current plane test centerline. When the relay yoke plane enters the measurement range of the laser displacement sensor, the x-coordinate and y-coordinate (x, y) are collected. En y En The data is recorded in array E until the yoke plane leaves the measurement range of the laser displacement sensor. When the relay core plane enters the measurement range of the laser displacement sensor, the horizontal and vertical coordinates (x, y, y) are collected. Tn y Tn The data is recorded in array T until the iron core plane leaves the measurement range of the laser displacement sensor;
[0013] The measurement results of the sampling points of the yoke plane centerline and the iron core plane centerline are stored in arrays E and T, respectively, where n is the actual number of sampling points. Arrays E and T are shown below:
[0014]
[0015]
[0016] The formulas for calculating the perpendicular distance d from the edge point of the yoke centerline to the centerline of the core plane and the angle θ between the centerline of the yoke plane and the centerline of the core plane are as follows:
[0017]
[0018]
[0019] Where k′ T 、k′ E Let b′ be the slope of the centerline fitted to the iron core plane and the slope of the centerline fitted to the yoke plane. T The intercept of the centerline fitting for the iron core plane;
[0020]
[0021]
[0022]
[0023] Where: T is the set of points on the center line of the iron core plane fitting, and E is the set of points on the center line of the yoke plane fitting; x Tn y TnThis represents the x and y coordinates of the measurement results at n points on the center line of the iron core plane fitting; x En y En The x and y coordinates represent the measurement results of n points on the plane fitting center line of the yoke.
[0024] The beneficial effects of this invention are: In production, this invention allows for simple control over the relationship between the relay core plane and the yoke plane. Compared to other testing methods, it is simple to operate, highly efficient, and its accuracy meets production requirements. This invention has a simple and reliable structure, moderate size, and is convenient for transportation, making it suitable for testing at different stages of the production line. After simple testing, the relay can be adjusted directionally based on the test results, effectively reducing the amount of adjustment required for relay dimensions, improving the consistency of its output characteristics, and increasing relay debugging efficiency. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of the testing device of the present invention;
[0026] Figure 2 This is a schematic diagram of the structure of a relay moving component;
[0027] Figure 3 A schematic diagram of the centerline height measuring component;
[0028] Figure 4 This is a schematic diagram of the control and computing components.
[0029] In the diagram: 1. Relay plug-in board; 2. Fixing plate; 3. Adapter plate; 4. Double slider guide rail slide; 5. Stepper motor; 6. Base plate; 7. Laser displacement sensor; 8. Sensor adapter plate; 9. XZ two-dimensional slide; 10. Slide base; 11. Power module; 12. Control module; 13. Motor driver; 14. Display of the perpendicular distance from the edge point of the yoke centerline to the centerline of the core plane; 15. Display of the angle between the centerline of the yoke plane and the centerline of the core plane; 16. Reset button; 17. Trigger button. Detailed Implementation
[0030] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0031] like Figure 1-4As shown, this invention provides a testing device for the relationship between the centerlines of the relay core plane and the yoke plane, including a relay moving component, a centerline height measuring component, and a control and calculation component. The relay moving component includes a double-slider guide rail slide 4, which moves the relay under test along the guide rail. The double-slider guide rail slide 4 is driven by a stepper motor 5. Specifically, the double-slider guide rail slide 4 includes a screw, two sliders, a relay insertion plate 1, a fixing plate 2, and an adapter plate 3. The two sliders are connected to the same screw through threaded holes. As the screw rotates, the two sliders move synchronously on the screw. The adapter plate 3, the fixing plate 2, and the relay insertion plate 1 are fixedly mounted above the two sliders in sequence. The fixing plate 2 is fixed to the base plate 6 with bolts. The centerline height measuring component includes a movable laser displacement sensor 7, which is located directly above the core plane and the yoke plane of the relay under test. Specifically, the laser displacement sensor 7 is mounted on the XZ two-dimensional slide 9 via the sensor adapter plate 8. The X-axis and Z-axis of the XZ two-dimensional slide 9 are perpendicular to each other and perpendicular to the X-axis and Z-axis of the relay movement direction. The XZ two-dimensional slide 9 is fixed on the base plate 6 via the slide base 10. The control and calculation components include a power module 11, a control module 12, a motor driver 13, a display showing the vertical distance from the edge point of the yoke centerline to the centerline of the core plane 14, a display showing the angle between the yoke plane centerline and the core plane centerline 15, a reset button 16, and a trigger button 17. A stepper motor 5 is connected to the power module 11 and the motor driver 13. The motor driver 13 is connected to the control module 12 and the power module 11. The display showing the vertical distance from the edge point of the yoke centerline to the centerline of the core plane 14 and the display showing the angle between the yoke plane centerline and the core plane centerline 15 are connected to the control module 12 and the power module 11. A laser displacement sensor 7 is connected to the control module 12 and the power module 11. The reset button 16 and the trigger button 17 are connected to the control module 12, and the control module 12 is connected to the power module 11. The power module 11 is connected to a 220V external power supply via a power cord.
[0032] This invention also provides a method for testing the relationship between the center lines of the relay core plane and the yoke plane using the aforementioned device. The control module 12 sends pulses to the stepper motor 5, causing the stepper motor 5 to rotate and move the two sliders on the double-slider guide rail slide 4. Simultaneously, the control system calculates the slider stroke by statistically analyzing the pulse signals. Whenever the slider stroke reaches an integer multiple of the sampling point spacing set by the program, the current slider stroke output value and the output value of the laser displacement sensor are collected as the abscissa x and ordinate y of a point on the current plane test center line. When the relay yoke plane enters the measurement range of the laser displacement sensor 7, the abscissa and ordinate (x, y) are collected. En y EnThe data is recorded in array E until the yoke plane leaves the measurement range of the laser displacement sensor 7. When the relay core plane enters the measurement range of the laser displacement sensor 7, the horizontal and vertical coordinates (x, y, y) are collected. Tn y Tn The data is recorded in array T until the iron core plane leaves the measurement range of the laser displacement sensor 7;
[0033] The measurement results of the sampling points of the yoke plane centerline and the iron core plane centerline are stored in arrays E and T, respectively, where n is the actual number of sampling points. Arrays E and T are shown below:
[0034]
[0035]
[0036] The formulas for calculating the perpendicular distance d from the edge point of the yoke centerline to the centerline of the core plane and the angle θ between the centerline of the yoke plane and the centerline of the core plane are as follows:
[0037]
[0038]
[0039] Where k′ T 、k′ E Let b′ be the slope of the centerline fitted to the iron core plane and the slope of the centerline fitted to the yoke plane. T The intercept of the centerline fitting for the iron core plane;
[0040]
[0041]
[0042]
[0043] Where: T is the set of points on the center line of the iron core plane fitting, and E is the set of points on the center line of the yoke plane fitting; x Tn y Tn This represents the x and y coordinates of the measurement results at n points on the center line of the iron core plane fitting; x En y En The x and y coordinates represent the measurement results of n points on the plane fitting center line of the yoke.
[0044] Example 1
[0045] After installing the relay under test onto the relay socket, adjust the XZ two-dimensional slide 9 so that the test spot of the laser displacement sensor 7 is located on the center line of the relay under test, and then lock the slide. Then press the reset button 16 to send a signal to the control module 12. The control module 12 calculates and controls the motor driver 13 to make the stepper motor 5 drive shaft rotate counterclockwise. The stepper motor 5 drives the two sliders in the double slider guide slide 4 to move backward a certain distance in parallel to perform the reset action. Then press the trigger button 17. After that, the control module 12 controls the motor driver 13 to make the stepper motor 5 drive shaft rotate clockwise. The stepper motor 5 drives the two sliders in the double slider guide slide 4 to move forward in parallel. When the laser displacement sensor 7 outputs a digital signal, the control module 12 starts recording the output value of the laser displacement sensor 7 from the current position and stores it as (x E1 y E1 Whenever the dual-slider guide rail slide 4 moves the relay under test a set distance, the control module 12 records the current distance traveled by the dual-slider guide rail slide 4 from the starting point and the current output value of the laser displacement sensor 7 and stores it as (x En y En When the double-slider guide rail slide 4 first moves to the point where the laser displacement sensor 7 loses its signal, it indicates that it has left the plane above the yoke. When the double-slider guide rail slide 4 continues to move to the point where the laser displacement sensor 7 reappears its signal, it indicates that it has reached the plane above the iron core. At the same time, the control module stores (x T1 y T1 ), and its subsequent storage will still be based on the set distance as (x Tn y Tn The process continues until the total range specified by the slider movement control module of the double slider guide rail slide table 4 is reached. At this point, the control module uses its built-in algorithm to calculate the vertical distance d from the edge point of the yoke centerline to the centerline of the iron core plane and the angle θ between the centerline of the yoke plane and the centerline of the iron core plane, based on the data stored during the test. These calculations are then sent digitally to the vertical distance display 14 and the angle display 15 for display. The power module 11 supplies power to the control module 12 and the motor driver 13. The laser displacement sensor 7, the vertical distance indicator 14 from the edge point of the yoke centerline to the centerline of the core plane, and the angle indicator 15 between the centerline of the yoke plane and the centerline of the core plane are powered by the control module 12. The stepper motor 5 is powered by the motor driver 13. The motor driver 13, the vertical distance indicator 14 from the edge point of the yoke centerline to the centerline of the core plane, the angle indicator 15 between the centerline of the yoke plane and the centerline of the core plane, the reset button 16, and the trigger button 17 are all connected to the control module 12. The stepper motor 5 is connected to the motor driver 13.
[0046] The measurement results of the sampling points of the yoke plane centerline and the iron core plane centerline are stored in arrays E and T, respectively, where n is the actual number of sampling points. Arrays E and T are shown below:
[0047]
[0048]
[0049] The formulas for calculating the perpendicular distance d from the edge point of the yoke centerline to the centerline of the core plane and the angle θ between the centerline of the yoke plane and the centerline of the core plane are as follows:
[0050]
[0051]
[0052] Where k′ T 、k′ E Let b′ be the slope of the centerline fitted to the iron core plane and the slope of the centerline fitted to the yoke plane. T The intercept of the centerline fitting for the iron core plane;
[0053]
[0054]
[0055]
[0056] Where: T is the set of points on the center line of the iron core plane fitting, and E is the set of points on the center line of the yoke plane fitting; x Tn y Tn This represents the x and y coordinates of the measurement results at n points on the center line of the iron core plane fitting; x En y En The x and y coordinates represent the measurement results of n points on the plane fitting center line of the yoke.
[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any modifications, alterations, substitutions, and variations made by those skilled in the art to the above embodiments are within the scope of the present invention.
Claims
1. A device for testing the relationship between the centerline of the relay core plane and the yoke plane, characterized in that, The system includes a relay movement component, a centerline height measurement component, and a control and calculation component. The relay movement component includes a double-slider guide rail slide (4), which moves the relay under test along the guide rail. The double-slider guide rail slide (4) is driven by a stepper motor (5). The centerline height measurement component includes a movable laser displacement sensor (7), which is located directly above the iron core plane and yoke plane of the relay under test. The control and calculation component includes a power module (11), a control module (12), a motor driver (13), a display showing the vertical distance from the edge point of the yoke centerline to the centerline of the iron core plane (14), a display showing the angle between the centerline of the yoke plane and the centerline of the iron core plane (15), a reset button (16), and a trigger button (17). The stepper motor (5) is connected to the power module (11) and the motor driver (13), and the motor driver (13) is connected to the control module (12) and the power module (11). The display showing the vertical distance from the edge point of the yoke centerline to the centerline of the iron core plane (14) is... 14) The angle result indicator (15) between the center line of the yoke plane and the center line of the core plane is connected to the control module (12) and the power module (11). The laser displacement sensor (7) is connected to the control module (12) and the power module (11). The reset button (16) and the trigger button (17) are connected to the control module (12). The control module (12) is connected to the power module (11). The double slider guide rail slide (4) includes a screw, two sliders, a relay plug plate (1), a fixing plate (2), and an adapter plate (3). Two sliders are connected to the same screw through threaded holes. As the screw rotates, the two sliders move synchronously on the screw. A converter plate (3), a fixing plate (2), and a relay plug plate (1) are fixedly installed above the two sliders in sequence. The laser displacement sensor (7) is set on the XZ two-dimensional slide (9) through the sensor converter plate (8). The X-axis and Z-axis of the XZ two-dimensional slide (9) are perpendicular to each other and perpendicular to the X-axis and Z-axis of the relay movement direction. The XZ two-dimensional slide (9) is fixed on the base plate (6) through the slide base (10).
2. The device for testing the relationship between the centerline of the relay core plane and the yoke plane according to claim 1, characterized in that: The power module (11) is connected to a 220V external power source via a power cord.
3. The device for testing the relationship between the centerline of the relay core plane and the yoke plane according to claim 1, characterized in that: The dual slider guide rail slide (4) and the control and calculation components are all fixed on the base plate (6).
4. A method for testing the relationship between the center lines of the relay core plane and the yoke plane using the device described in any one of claims 1-3, characterized in that, The control module (12) sends pulses to the stepper motor (5), and the stepper motor (5) rotates to move the two sliders on the double slider guide rail slide (4). At the same time, the control system calculates the slider stroke by statistically analyzing the pulse signals. Whenever the slider stroke reaches an integer multiple of the sampling point spacing set by the program, the current slider stroke output value and the output value of the laser displacement sensor are collected as the horizontal coordinate x and the corresponding vertical coordinate y of a point on the current plane test center line. When the yoke plane of the relay enters the measurement range of the laser displacement sensor (7), the horizontal and vertical coordinates (x, y) are collected. En y En The data is recorded in array E until the yoke plane leaves the measurement range of the laser displacement sensor (7). When the iron core plane of the relay enters the measurement range of the laser displacement sensor (7), the horizontal and vertical coordinates (x, y, y) are collected. Tn y Tn The data is recorded in array T until the iron core plane leaves the measurement range of the laser displacement sensor (7); The measurement results of the sampling points of the yoke plane centerline and the iron core plane centerline are stored in arrays E and T, respectively, where n is the actual number of sampling points. Arrays E and T are shown below: ； ； The formulas for calculating the perpendicular distance d from the edge point of the yoke centerline to the centerline of the core plane and the angle θ between the centerline of the yoke plane and the centerline of the core plane are as follows: ； ； in Let S be the slope of the centerline fitted to the iron core plane and the slope of the centerline fitted to the yoke plane, where S is the slope of the centerline fitted to the iron core plane. The intercept of the centerline fitting for the iron core plane; ； ； ； Where: T is the set of points on the center line of the iron core plane fitting, and E is the set of points on the center line of the yoke plane fitting; x Tn y Tn This represents the x and y coordinates of the measurement results at n points on the center line of the iron core plane fitting; x En y En The x and y coordinates represent the measurement results of n points on the plane fitting center line of the yoke.