A calibration fixture for a top plate delamination sensor

Abstract

A calibration fixture for a roof delamination sensor includes a base, columns, a first sensor holder, a second sensor holder, a first crossbeam, and a second crossbeam. The base is a cross-shaped plate structure composed of a first base plate and a second base plate that are perpendicular to each other. A column is fixedly mounted at each of the four ends of the base. The first sensor holder is positioned between two corresponding columns on the first base plate; the second sensor holder is positioned between two corresponding columns on the second base plate. The first and second crossbeams are respectively positioned above the first and second sensor holders and can move vertically. The steel wire rope of the roof delamination sensor is led out from its outlet and its end is fixedly connected to the corresponding first or second crossbeam. This roof delamination sensor calibration fixture effectively solves the problems of difficulty in guaranteeing accuracy, low efficiency, poor safety, and poor consistency in existing calibration methods.

Description

Technical Field

[0001] This utility model relates to the field of delamination sensor calibration technology, specifically to a calibration fixture for a top plate delamination sensor. Background Technology

[0002] In underground engineering fields such as coal mines and tunnels, the stability of the roof is directly related to construction safety and project quality. Roof delamination refers to the phenomenon of relative displacement between different layers of the roof rock strata under the influence of factors such as self-weight and mining disturbance. As an important monitoring device, roof delamination sensors are widely used in such projects to monitor changes in roof delamination in real time.

[0003] Roof delamination sensors typically consist of a sensor body and a steel wire rope. The sensor body is installed at different layers of the roof, and one end of the steel wire rope is connected to the sensor body, while the other end is fixed to a relatively stable rock layer or structure. When roof delamination occurs, the relative displacement between the sensor body and the fixed end will cause the steel wire rope to move. The sensor detects the displacement of the steel wire rope and converts it into an electrical signal or other measurable signal, thereby achieving accurate monitoring of the amount of roof delamination and providing key data support for engineering safety assessment and decision-making.

[0004] Because the working environment of the roof delamination sensor is complex and variable, it is easily affected by various factors such as temperature, humidity, vibration, and electromagnetic interference. These factors may cause changes in the measurement accuracy of the sensor and result in measurement errors. In addition, during long-term use, the internal components of the sensor may age and wear, further affecting the measurement accuracy. Therefore, in order to ensure that the roof delamination sensor can always provide accurate and reliable monitoring data, regular calibration is an essential step.

[0005] Calibration refers to determining the accurate relationship between the output and input of a sensor through certain experimental methods and standard equipment, and calibrating and adjusting the sensor's performance parameters so that its measurement results meet the predetermined accuracy requirements. For roof delamination sensors, the calibration process usually requires simulating roof delamination displacements of different magnitudes, detecting the sensor's output signal under different displacements, and calibrating the sensor based on the detection results to ensure its measurement accuracy and reliability.

[0006] Currently, most existing methods for calibrating roof delamination sensors are relatively simple and lack specialized calibration fixtures. In actual calibration, methods typically involve manually simulating roof delamination displacement, such as manually stretching a steel wire rope. This method has several drawbacks: (1) Difficulty in ensuring accuracy: Manual operation makes it difficult to accurately control the tensile displacement of the wire rope, resulting in inaccurate displacement applied during calibration, which fails to meet the requirements of high-precision calibration, thus affecting the calibration effect and measurement accuracy of the sensor; (2) Inefficient: Manual operation requires manual calibration of each sensor, which is cumbersome and consumes a lot of manpower and time. The efficiency problem is more prominent when multiple sensors need to be calibrated, making it difficult to meet the needs of large-scale engineering applications. (3) Poor safety: During the manual stretching of the wire rope, there are certain safety hazards due to the inconvenience of operation and lack of effective protective measures, which may cause injury to the operator; (4) Poor consistency: Different operators may have different operating habits and force during manual calibration, which may lead to significant differences in the calibration results of the same or different sensors, affecting the consistency and comparability of measurement data between sensors.

[0007] In summary, existing methods for calibrating roof delamination sensors cannot meet the requirements of practical engineering for calibration accuracy, efficiency, safety, and consistency. Therefore, developing a tooling specifically for calibrating roof delamination sensors is of significant practical importance. Summary of the Invention

[0008] To address the aforementioned issues, this utility model provides a calibration fixture for a roof delamination sensor. This fixture effectively solves the problems of difficulty in guaranteeing accuracy, low efficiency, poor safety, and poor consistency in existing calibration methods. It can provide high-precision, high-efficiency, safe, reliable, and consistent calibration for roof delamination sensors, ensuring that the sensors always provide accurate and reliable monitoring data, and meeting the actual needs of roof delamination monitoring in underground engineering fields such as coal mines and tunnels.

[0009] The technical solution of this utility model is as follows: A calibration fixture for a roof delamination sensor includes a base, columns, a first sensor mounting bracket, a second sensor mounting bracket, a first crossbeam, and a second crossbeam. The base is a cross-shaped plate structure composed of a first base plate and a second base plate that are perpendicular to each other. A column is fixedly installed at each of the four ends of the base. The first sensor mounting bracket is located between two columns corresponding to the first base plate and is fixed to the base for fixing one or more roof delamination sensors. The second sensor mounting bracket is located between two columns corresponding to the second base plate and is fixed to the base for fixing one or more roof delamination sensors. The sensor body is placed with the wire rope outlet facing upwards. The first and second crossbeams are respectively located above the first and second sensor mounting brackets and can be raised and lowered vertically. The wire rope of the roof delamination sensor is led out from the wire rope outlet and its end is fixedly connected to the corresponding first or second crossbeam.

[0010] The second crossbeam is positioned above the first crossbeam, and the distance between the second crossbeam and the first crossbeam is consistent with the distance between the second sensor mounting bracket and the first sensor mounting bracket. Each of the four columns is equipped with a ball screw linear slide module. The slide of the ball screw linear slide module slides vertically. The model of the ball screw linear slide module is GX80-600, and it is equipped with a drive stepper motor or servo motor.

[0011] The two ends of the first crossbeam are respectively fixedly connected to the slides of the ball screw linear slide module on the columns at both ends of the first base plate; the two ends of the second crossbeam are respectively fixedly connected to the slides of the ball screw linear slide module on the columns at both ends of the second base plate.

[0012] A bracket is fixedly installed on the slide of the ball screw linear slide module, and the end of the first or second crossbeam is fixedly connected to the bracket.

[0013] The first sensor mounting bracket consists of a first upright plate and a first baffle. The two first upright plates are fixedly installed in parallel on both sides of the first base plate, and the first baffle is fixedly installed on the top of the two first upright plates. A space for placing the sensor body is formed between the first baffle and the first base plate.

[0014] The first baffle is provided with several first rope holes that match the wire rope outlet.

[0015] The second sensor mounting bracket consists of a second upright plate, a second baffle, and a support plate. The two second upright plates are fixedly installed parallel to each other on both sides of the second base plate. The second baffle is fixedly installed on the top of the two second upright plates. The two ends of the support plate are fixedly connected to the bottom of the two second upright plates. A space for placing the sensor body is formed between the second baffle and the support plate.

[0016] The second baffle is provided with several second rope holes that match the wire rope outlet.

[0017] The height difference between the pallet and the second base plate is the same as the height difference between the second crossbeam and the first crossbeam.

[0018] The beneficial effects of this utility model are as follows: 1. This utility model discloses a calibration fixture for a roof delamination sensor. By setting a ball screw linear slide module, the fixture enables the first and second crossbeams to move up and down precisely in the vertical direction, thereby accurately controlling the tensile displacement of the steel wire rope of the roof delamination sensor. This avoids the drawback of manual operation, which makes it difficult to accurately control the displacement, meets the requirements of high-precision calibration, and effectively improves the calibration effect and measurement accuracy of the sensor.

[0019] 2. The present invention discloses a calibration fixture for a roof delamination sensor. This fixture can calibrate multiple roof delamination sensors simultaneously without requiring manual operation of each sensor individually, thus greatly saving manpower and time. Especially in large-scale engineering applications, it can significantly improve calibration efficiency and meet actual engineering needs.

[0020] 3. The present invention discloses a calibration fixture for a roof delamination sensor. The calibration fixture uses a mechanical structure for calibration operations, which avoids the possible injury to operators caused by inconvenience and lack of protective measures during manual stretching of the wire rope, thereby improving the safety of the calibration process.

[0021] 4. The present invention discloses a calibration fixture for a roof delamination sensor. This fixture reduces the differences in calibration results caused by differences in operating habits and force among different operators, and ensures the consistency and comparability of calibration results of the same sensor or different sensors, which is conducive to improving the reliability of sensor measurement data. Attached Figure Description

[0022] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0023] In the attached diagram: Figure 1 This is a three-dimensional structural schematic diagram of a calibration fixture for a top plate delamination sensor according to an embodiment of the present utility model; Figure 2 This is a three-dimensional structural diagram of a top plate delamination sensor calibration fixture according to an embodiment of the present invention during use; Figure 3This is a three-dimensional structural diagram of the base of a calibration fixture for a top plate delamination sensor according to an embodiment of the present utility model; Figure 4 This is a three-dimensional structural diagram of the base and column of a calibration fixture for a top plate delamination sensor according to an embodiment of the present invention. Figure 5 This is a three-dimensional structural diagram of the base, column and ball screw linear slide module of a calibration fixture for a top plate delamination sensor according to an embodiment of the present invention. Figure 6 This is a schematic diagram of the three-dimensional structure of the base and sensor holder of a top plate delamination sensor calibration fixture according to an embodiment of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the three-dimensional structure of the base and sensor holder of a top plate delamination sensor calibration fixture according to an embodiment of the present invention. Figure 2 ; Figure 8 This is a schematic diagram of the external shape of the top plate delamination sensor being calibrated using a calibration fixture for a top plate delamination sensor according to an embodiment of this utility model. The components represented by the various reference numerals in the diagram are: This utility model includes: 100, base; 110, first base plate; 120, second base plate; 200, top plate delamination sensor; 210, sensor body; 211, wire rope outlet; 300, column; 400, ball screw linear slide module; 500, first upright plate; 600, second upright plate; 700, first baffle; 710, first rope hole; 800, second baffle; 810, second rope hole; 900, support plate; 1000, first crossbeam; 1100, second crossbeam; 1200, bracket. Detailed Implementation

[0024] like Figure 1 and Figure 2 As shown, the calibration fixture for the top plate delamination sensor mainly consists of a base 100, a column 300, a first sensor mounting bracket, a second sensor mounting bracket, a first crossbeam 1000, a second crossbeam 1100, a ball screw linear slide module 400, and a bracket 1200. The base 100 serves as the supporting foundation for the entire fixture. The column 300 is used to support and install other components. The first and second sensor mounting brackets are used to fix the sensor body 210 of the top plate delamination sensor 200. The first and second crossbeams 1000 and 1100 are used to connect the ends of the steel wire rope of the top plate delamination sensor 200. The ball screw linear slide module 400 realizes the lifting and lowering of the crossbeam. The bracket 1200 is used to assist in connecting the crossbeam and the slide.

[0025] Please refer to Figures 3 to 8The detailed technical features of the main components of the top plate delamination sensor calibration fixture are as follows: The base 100 is composed of a cross-shaped plate structure consisting of a first base plate 110 and a second base plate 120 that are perpendicular to each other. This structure gives the base 100 good stability and symmetry, and can provide solid support for the entire tooling. During the calibration process, it can effectively reduce the error caused by the shaking of the base and ensure the calibration accuracy. A column 300 is fixedly installed at each of the four ends of the base 100, and a ball screw linear slide module 400 is installed on each of the four columns 300. The columns 300 provide the installation position for the ball screw linear slide module 400 and are an important support structure for the entire tooling to realize the lifting function. In this embodiment, the ball screw linear slide module 400 is model GX80-600, equipped with a drive stepper motor or servo motor, and the slide slides in the vertical direction. This module has high transmission accuracy and stability. Driven by the stepper motor or servo motor, it can accurately control the lifting position of the slide, thereby realizing precise lifting control of the first crossbeam 1000 and the second crossbeam 1100 to meet different calibration requirements. The bracket 1200 is fixedly installed on the slide of the ball screw linear slide module 400, and the end of the first crossbeam 1000 or the second crossbeam 1100 is fixedly connected to the bracket 1200; the bracket 1200 serves to connect the crossbeam and the slide, enhances the stability of the connection, and enables the crossbeam to move smoothly with the rise and fall of the slide. The first sensor mounting bracket consists of a first upright plate 500 and a first baffle 700. Two first upright plates 500 are fixedly mounted parallel to each other on both sides of the first base plate 110, and the first baffle 700 is fixedly mounted on top of the two first upright plates 500. A space for placing the sensor body 210 is formed between the first baffle 700 and the first base plate 110. This structure is simple and stable, reliably fixing the sensor body 210 and preventing it from shaking or shifting during calibration. The first baffle 700 is provided with several first rope holes 710 that match the wire rope outlet 211. Specifically, these holes are U-shaped to facilitate the wire rope's exit, preventing tangling or jamming during exit and ensuring the smooth progress of the calibration process. The second sensor mounting bracket consists of a second upright plate 600, a second baffle 800, and a support plate 900. The two second upright plates 600 are fixedly mounted parallel to each other on both sides of the second base plate 120. The second baffle 800 is fixedly mounted on the top of the two second upright plates 600. The two ends of the support plate 900 are fixedly connected to the bottom of the two second upright plates 600. A space for placing the sensor body 210 is formed between the second baffle 800 and the support plate 900. This structure can also stably fix the sensor body 210. The second baffle 800 is provided with several second rope holes 810 that match the wire rope outlet 211, which have the same function as the first rope holes 710. The height difference between the support plate 900 and the second base plate 120 is consistent with the height difference between the second crossbeam 1100 and the first crossbeam 1000. This design makes the entire fixture more structurally coordinated and facilitates the connection and calibration of the wire rope.

[0026] The first crossbeam 1000 and the second crossbeam 1100 are respectively positioned above the first sensor mounting bracket and the second sensor mounting bracket, and can be raised and lowered vertically. The two ends of the first crossbeam 1000 are respectively fixedly connected to the slides of the ball screw linear slide module 400 on the columns 300 at both ends of the first base plate 110. The two ends of the second crossbeam 1100 are respectively fixedly connected to the slides of the ball screw linear slide module 400 on the columns 300 at both ends of the second base plate 120. The second crossbeam 1100 is positioned above the first crossbeam 1000, and the distance between the second crossbeam 1100 and the first crossbeam 1000 is consistent with the distance between the second sensor mounting bracket and the first sensor mounting bracket. This layout allows the fixture to calibrate multiple top plate delamination sensors 200 simultaneously, improving calibration efficiency, and ensuring calibration accuracy by precisely controlling the crossbeam spacing.

[0027] The working process of this top plate delamination sensor calibration fixture is as follows: Sensor installation: Place the sensor body 210 of the top plate separation sensor 200 in the space formed by the first sensor fixing frame and the second sensor fixing frame with the wire rope outlet 211 facing upwards, so that the wire rope is led out from the first rope hole 710 or the second rope hole 810. Crossbeam connection: The end of the steel wire rope is fixedly connected to the corresponding first crossbeam 1000 or second crossbeam 1100; Calibration operation: By controlling the stepper motor or servo motor, the slide of the ball screw linear slide module 400 is driven to slide in the vertical direction, thereby driving the first crossbeam 1000 and the second crossbeam 1100 to rise and fall; according to the calibration requirements, the position of the crossbeam is precisely adjusted so that the wire rope produces corresponding tensile or compressive deformation, thereby calibrating the top plate delamination sensor 200, recording the sensor output data at different positions, and completing the calibration process.

Claims

1. A calibration fixture for a top plate delamination sensor, characterized in that, The system includes a base (100), columns (300), a first sensor mounting bracket, a second sensor mounting bracket, a first crossbeam (1000), and a second crossbeam (1100). The base (100) is a cross-shaped plate structure composed of a first base plate (110) and a second base plate (120) that are perpendicular to each other. A column (300) is fixedly installed at each of the four ends of the base (100). The first sensor mounting bracket is located between two corresponding columns (300) on the first base plate (110) and is fixed to the base (100) for fixing the sensor body (210) of one or more top plate delamination sensors (200). The second sensor mounting bracket is installed between the first base plate (110) and the corresponding columns (300). The sensor body (210) is placed between two columns (300) corresponding to the second base plate (120) and fixed on the base (100) for fixing one or more top plate delamination sensors (200); the sensor body (210) is placed with the wire rope outlet (211) facing upward; the first crossbeam (1000) and the second crossbeam (1100) are respectively set above the first sensor fixing frame and the second sensor fixing frame, and can be raised and lowered in the vertical direction; after the wire rope of the top plate delamination sensor (200) is led out from the wire rope outlet (211), its end is fixedly connected to the corresponding first crossbeam (1000) or second crossbeam (1100).

2. The calibration fixture for a top plate delamination sensor according to claim 1, characterized in that, The second crossbeam (1100) is positioned above the first crossbeam (1000), and the distance between the second crossbeam (1100) and the first crossbeam (1000) is consistent with the distance between the second sensor mounting bracket and the first sensor mounting bracket.

3. The calibration fixture for a top plate delamination sensor according to claim 1, characterized in that, Each of the four columns (300) is equipped with a ball screw linear slide module (400), and the slide of the ball screw linear slide module (400) slides in the vertical direction.

4. The calibration fixture for a top plate delamination sensor according to claim 3, characterized in that, The two ends of the first crossbeam (1000) are respectively fixedly connected to the slide of the ball screw linear slide module (400) on the two end columns (300) of the first base plate (110); the two ends of the second crossbeam (1100) are respectively fixedly connected to the slide of the ball screw linear slide module (400) on the two end columns (300) of the second base plate (120).

5. The calibration fixture for a top plate delamination sensor according to claim 4, characterized in that, A bracket (1200) is fixedly installed on the slide of the ball screw linear slide module (400), and the end of the first crossbeam (1000) or the second crossbeam (1100) is fixedly connected to the bracket (1200).

6. The calibration fixture for a top plate delamination sensor according to claim 1, characterized in that, The first sensor mounting bracket consists of a first upright plate (500) and a first baffle (700). The two first upright plates (500) are fixedly arranged in parallel on both sides of the first base plate (110). The first baffle (700) is fixedly arranged on the top of the two first upright plates (500). A space for placing the sensor body (210) is formed between the first baffle (700) and the first base plate (110).

7. The calibration fixture for a top plate delamination sensor according to claim 6, characterized in that, The first baffle (700) is provided with a plurality of first rope holes (710) that match the wire rope outlet (211).

8. The calibration fixture for a top plate delamination sensor according to claim 1, characterized in that, The second sensor mounting bracket consists of a second upright plate (600), a second baffle (800), and a support plate (900). The two second upright plates (600) are fixedly arranged in parallel on both sides of the second base plate (120). The second baffle (800) is fixedly arranged on the top of the two second upright plates (600). The two ends of the support plate (900) are fixedly connected to the bottom of the two second upright plates (600). A space for placing the sensor body (210) is formed between the second baffle (800) and the support plate (900).

9. The calibration fixture for a top plate delamination sensor according to claim 8, characterized in that, The second baffle (800) is provided with several second rope holes (810) that match the wire rope outlet (211).

10. A calibration fixture for a top plate delamination sensor according to claim 8, characterized in that, The height difference between the pallet (900) and the second base plate (120) is the same as the height difference between the second crossbeam (1100) and the first crossbeam (1000).

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