Coal mine tunnel cross-sectional area measurement sensor

Abstract

The utility model relates to the technical field of coal mine safety, in particular to a coal mine tunnel cross-sectional area measuring sensor, which comprises a laser ranging assembly, a laser distance measuring assembly, a laser distance measuring assembly and a laser distance measuring assembly, the rotating assembly is fixedly arranged on the coal mine tunnel, the laser ranging assembly is arranged on the rotating assembly, and the rotating assembly drives the laser ranging assembly to rotate; when the rotating assembly drives the laser ranging assembly to rotate, the laser ranging assembly rotates a circle around the section of the roadway. According to the utility model, through combination of the laser ranging assembly and the rotating assembly, one-circle scanning of the section of the roadway can be realized, contour data of the roadway wall can be automatically obtained, and the sectional area can be calculated in real time. Compared with a traditional manual measurement method, the sensor has the advantages of being high in measurement precision, high in real-time performance, free of manual intervention and the like. The device can adapt to complex conditions such as roadway deformation and collapse, and continuously provide high-frequency and continuous section data.

Description

Technical Field

[0001] This utility model relates to the field of coal mine safety technology, and in particular to a coal mine roadway cross-sectional area measurement sensor. Background Technology

[0002] When ventilating underground coal mines, it is necessary to calculate the ventilation volume Q of the roadway, Q=S*V*t. Where S is the cross-sectional area of ​​the roadway. The cross-sectional shape of the roadway is generally arched, trapezoidal, rectangular, etc. Due to geological factors and coal seam mining, the roadway may deform, and roof or sidewall slippage may cause changes in the cross-sectional area. Therefore, it is necessary to measure the cross-sectional area of ​​the roadway regularly.

[0003] Currently, cross-sectional area measurements are generally performed manually. Surveyors use measuring tapes or laser rangefinders to measure parameters such as the length, width, diameter, and arc length of the tunnel, and then calculate the results. However, this method of manual, periodic measurement results in discontinuous and unreliable data, which cannot meet the requirements of ventilation management.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] This invention provides a coal mine roadway cross-sectional area measurement sensor, thereby effectively solving the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a coal mine roadway cross-sectional area measuring sensor, comprising:

[0007] A laser ranging component, wherein the laser ranging component is used to emit a laser for ranging;

[0008] A rotating component is fixedly installed on a coal mine roadway, and a laser ranging component is installed on the rotating component. The rotating component drives the laser ranging component to rotate.

[0009] When the rotating component drives the laser ranging component to rotate, the laser ranging component rotates one revolution around the tunnel cross section.

[0010] Further, the rotating assembly includes:

[0011] The base is fixedly installed;

[0012] A rotating shaft is mounted on the base and is rotatable, and the laser ranging component is fixedly mounted on one end of the rotating shaft;

[0013] A drive assembly is fixedly disposed at the other end of the rotating shaft and is connected to the rotating shaft for transmission, thereby driving the rotating shaft to rotate.

[0014] Furthermore, the driving component is a motor.

[0015] Furthermore, the drive assembly also includes an encoder, which is fixedly mounted on the motor and connected to the motor via gear transmission. The encoder measures the rotation angle of the rotating shaft.

[0016] Furthermore, the base is provided with two bearings, and the rotating shaft passes through the two bearings.

[0017] Furthermore, a conductive slip ring is provided at one end of the rotating shaft near the laser ranging component. The conductive slip ring is sleeved on the rotating shaft and fixed to the base.

[0018] Furthermore, a rotating fixing plate is provided at one end of the rotating shaft where the laser ranging component is located, and the laser ranging component is fixedly mounted on the rotating fixing plate.

[0019] Furthermore, the rotating fixing plate has a ring structure.

[0020] The beneficial effects of this invention are as follows: By combining a laser ranging component with a rotating component, a full-circle scan of the roadway cross-section can be achieved, automatically acquiring the contour data of the roadway wall and calculating the cross-sectional area in real time. Compared with traditional manual measurement methods, this sensor has advantages such as high measurement accuracy, strong real-time performance, and no need for manual intervention. It can adapt to complex situations such as roadway deformation and collapse, continuously providing high-frequency, continuous cross-sectional data, significantly improving the accuracy of ventilation volume calculation and the efficiency of ventilation management, and effectively ensuring the safe and stable operation of the mine ventilation system. Simultaneously, this device can remotely collect and upload data, providing data support for intelligent mines. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is a top view of the present invention. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] like Figures 1 to 3 As shown: A coal mine roadway cross-sectional area measurement sensor, comprising:

[0027] Laser ranging component 1, which is used to emit a laser for ranging;

[0028] Rotating component 2 is fixedly installed on the coal mine roadway, and laser ranging component 1 is installed on rotating component 2. Rotating component 2 drives laser ranging component 1 to rotate.

[0029] When the rotating component 2 drives the laser ranging component 1 to rotate, the laser ranging component 1 rotates around the tunnel cross section once.

[0030] By combining the laser ranging component 1 with the rotating component 2, a full-circle scan of the roadway cross-section can be achieved, automatically acquiring the contour data of the roadway wall and calculating the cross-sectional area in real time. Compared with traditional manual measurement methods, this sensor has advantages such as high measurement accuracy, strong real-time performance, and no need for manual intervention. It can adapt to complex conditions such as roadway deformation and collapse, continuously providing high-frequency, continuous cross-sectional data, significantly improving the accuracy of ventilation volume calculation and the efficiency of ventilation management, and effectively ensuring the safe and stable operation of the mine ventilation system. Simultaneously, the device can remotely collect and upload data, providing data support for intelligent mines.

[0031] In this embodiment, the rotating component 2 includes:

[0032] Base 21, base 21 is fixedly installed;

[0033] A rotating shaft 22 is mounted on a base 21 and is rotatable. The laser ranging component 1 is fixedly mounted on one end of the rotating shaft 22.

[0034] The drive assembly 23 is fixedly disposed at the other end of the rotating shaft 22. The drive assembly 23 is connected to the rotating shaft 22 in a transmission manner, and drives the rotating shaft 22 to rotate.

[0035] By configuring the base 21, rotating shaft 22, and drive assembly 23, the laser ranging component 1 can stably and accurately perform rotational scanning around the tunnel cross-section. The base 21 provides reliable fixed support, ensuring stable operation of the equipment in the complex environment of a coal mine; the rotating shaft 22 drives the laser ranging component 1 to rotate smoothly, ensuring a continuous and consistent measurement trajectory; the drive assembly 23 enables precise control of the rotation angle and speed, improving measurement accuracy and efficiency. This structure is compact, easy to install, and simple to maintain, which is conducive to the long-term stable operation of the equipment. At the same time, the modular design facilitates future upgrades and expansions, further enhancing the system's intelligence and automation level.

[0036] Among them, the drive component 23 is a motor.

[0037] As a preferred embodiment of the above, the drive assembly 23 further includes an encoder 24, which is fixedly mounted on the motor and connected to the motor via gear transmission. The encoder 24 measures the rotation angle of the rotating shaft 22.

[0038] By incorporating an encoder 24 into the drive assembly 23, the rotation angle of the rotating shaft 22 can be monitored in real time, accurately recording the angle information corresponding to each distance measurement by the laser ranging assembly 1. Through gear transmission connection with the motor, the encoder 24 synchronously acquires the rotation state, ensuring a one-to-one correspondence between the angle data and the distance measurement data, providing crucial information for the accurate reconstruction of the cross-sectional profile. This design significantly improves measurement accuracy and data matching reliability, avoids deviations in cross-sectional area calculation caused by rotational errors, and helps to achieve more accurate and stable automatic monitoring of the roadway cross-section.

[0039] The base 21 has two bearings 211, and the rotating shaft 22 passes through the two bearings 211.

[0040] By setting two bearings 211 on the base 21 and passing the rotating shaft 22 through them, the support stability and rotation accuracy of the rotating shaft 22 are effectively improved. The double bearing 211 structure can reduce swaying and friction during rotation, ensuring smooth operation and accurate angle positioning of the laser ranging component 1 during rotation, and extending the service life of the equipment.

[0041] In this embodiment, a conductive slip ring 221 is provided at one end of the rotating shaft 22 near the laser ranging component 1. The conductive slip ring 221 is sleeved on the rotating shaft 22 and fixed on the base 21.

[0042] A conductive slip ring 221 is installed at one end of the rotating shaft 22 near the laser ranging component 1 and fixed to the base 21. This allows the laser ranging component 1 to continuously supply power and maintain stable signal transmission during rotation. The conductive slip ring 221 rotates with the rotating shaft 22 to achieve non-contact transmission of electrical signals or data, avoiding damage or signal interruption caused by cable entanglement, improving the reliability and continuity of system operation, and is suitable for complex, long-term downhole operating environments.

[0043] The rotating shaft 22 has a rotating fixing plate 222 at one end where the laser ranging component 1 is located, and the laser ranging component 1 is fixedly mounted on the rotating fixing plate 222.

[0044] As a preferred embodiment of the above, the rotating fixing plate 222 has a ring structure.

[0045] 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. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A coal mine roadway cross sectional area measuring sensor, characterised in that, include: A laser ranging component, wherein the laser ranging component is used to emit a laser for ranging; A rotating component is fixedly installed on a coal mine roadway, and a laser ranging component is installed on the rotating component. The rotating component drives the laser ranging component to rotate. When the rotating component drives the laser ranging component to rotate, the laser ranging component rotates one revolution around the tunnel cross section.

2. The coal mine roadway cross sectional area measurement sensor of claim 1, wherein, The rotating component includes: The base is fixedly installed; A rotating shaft is mounted on the base and is rotatable, and the laser ranging component is fixedly mounted on one end of the rotating shaft; A drive assembly is fixedly disposed at the other end of the rotating shaft and is connected to the rotating shaft for transmission, thereby driving the rotating shaft to rotate.

3. A coal mine roadway cross sectional area measurement sensor according to claim 2, characterised in that, The drive component is a motor.

4. The coal mine roadway cross sectional area measurement sensor of claim 3, wherein, The rotating assembly also includes an encoder, which is fixedly mounted on the motor and connected to the motor via gear transmission. The encoder measures the rotation angle of the rotating shaft.

5. The coal mine roadway cross-sectional area measuring sensor according to claim 2, characterized in that, The base is provided with two bearings, and the rotating shaft passes through the two bearings.

6. The coal mine roadway cross sectional area measurement sensor of claim 2, wherein, A conductive slip ring is provided at one end of the rotating shaft near the laser ranging component. The conductive slip ring is sleeved on the rotating shaft and fixed to the base.

7. A coal mine roadway cross sectional area measurement sensor according to claim 6, characterised in that, The rotating shaft has a rotating fixing plate at one end where the laser ranging component is located, and the laser ranging component is fixedly mounted on the rotating fixing plate.

8. A coal mine roadway cross sectional area measurement sensor according to claim 7, characterised in that, The rotating fixing plate has a ring structure.

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