A monitoring device and method for perceiving real-time state of a coal mine scraper conveyor

Abstract

The application provides a monitoring device and a monitoring method for sensing the real-time state of a coal mine scraper conveyor. The monitoring device comprises a fixed support and a monitoring assembly. The monitoring assembly is connected with the scraper conveyor through the fixed support. The monitoring assembly comprises a computing unit and a sensing unit. The computing unit and the sensing unit are connected through a power supply communication line. The monitoring device is installed on the scraper conveyor. Monitoring device A and monitoring device B are installed at fixed positions of two adjacent scraper conveyors, respectively. The distance and the inclination angle of the two scraper conveyors are measured and calculated in real time through the sensing unit. The application can monitor the relative position of the mine scraper conveyor in real time, and solve the problems of finding straightness and monitoring the flatness of the coal wall of the mine scraper conveyor and the coal mining machine.

Description

Technical Field

[0001] This invention belongs to the field of mining instrumentation technology, and particularly relates to a monitoring device and method for sensing the real-time status of a scraper conveyor in a coal mine. Background Technology

[0002] Currently, the country is vigorously promoting the construction of intelligent mines. Domestic coal mines are developing from mechanized coal mining to automated, information-based, and intelligent coal mining. The biggest task is to enable information-based sensing of existing mechanized equipment, including parameter sensing, dynamic behavior sensing, and environmental sensing. In the case of scraper conveyors, the data management of the working condition sensing system is inadequate. Accurate and detailed data is the foundation for improving the control precision and confidence of scraper conveyors. Only by increasing the density of scraper conveyor working condition information collection, refining the granularity of information, and maintaining real-time seamless information exchange with the coal mining equipment at the front and rear ends of the scraper conveyor (environmental data, coal mining machine data, and conveyor data) can the intelligent control level of scraper conveyors be improved. However, in reality, the underground environment in most coal mines is poor, and the reliability and durability of information collection and transmission systems cannot meet the requirements.

[0003] There is an urgent need for specialized sensors to detect parameters such as the direction, inclination angle, and misalignment of scraper conveyors, so as to promote the maturity of the complete set of scraper conveyor full attitude perception technology system and make the intelligent conveying system of scraper conveyors more accurate, efficient and stable. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a monitoring device and method for sensing the real-time status of a scraper conveyor in a coal mine. It can perform real-time dynamic detection of the scraper conveyor, is suitable for the field environment, is easy to install and use, and can achieve long-term reliable operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A monitoring device for sensing the real-time status of a scraper conveyor in a coal mine, the monitoring device comprising a fixed support and a monitoring component, the monitoring component being connected to the scraper conveyor via the fixed support, the monitoring component comprising a computing unit and a sensing unit, the computing unit and the sensing unit being connected via a power supply and communication line; The computing unit includes a main processor, a clock module, a power conversion module, and a CAN communication module; it is used to process the parameter information of the sensing unit and to interact with the outside world through the CAN bus. The sensing unit is used to monitor the real-time position, tilt angle, bending, extension and misalignment parameters of the scraper conveyor; The monitoring component has a fixed point, which is connected to the sensing unit.

[0006] Furthermore, the monitoring component includes monitoring component A and monitoring component B, which are connected by a flexible sealing component; monitoring component A is provided with a sensing unit and a computing unit, and monitoring component B is provided with a fixed point, and the sensing unit is connected to the fixed point by a non-elastic deformation pull rope.

[0007] Furthermore, the sensing unit is a sealing element, and the sensing unit includes a self-resetting spring and a telescopic moving body. The telescopic moving body is connected to a fixed point in the monitoring component B through a non-elastic deformation pull rope.

[0008] Furthermore, the fixed support includes fixed support A and fixed support B, which are fixed to two adjacent scraper conveyors.

[0009] Furthermore, the monitoring component A is also equipped with indicator lights and plug connectors.

[0010] Furthermore, the sensing unit is provided with 3-8 units, and the fixed point is provided with 2-6 units.

[0011] Furthermore, the non-elastic deformation rope is made of steel wire or braided wire.

[0012] The present invention also provides a monitoring method using the monitoring device, the monitoring method comprising the following steps: S1: Fix the fixed brackets to two adjacent scraper conveyors respectively to achieve a fixed connection between the monitoring device and the adjacent scraper conveyors; S2: The monitoring component is connected to the fixed bracket, and the computing unit interacts with the outside through the plug connector; S3: The distance, tilt angle, bending or extension of the two scraper conveyors are measured and calculated in real time by the sensing unit, thereby sensing the real-time status of the scraper conveyors.

[0013] Furthermore, the monitoring component is located in the space between the bottom of the scraper conveyor trough and the ground.

[0014] Furthermore, the sensing unit and computing unit are intrinsically safe circuits.

[0015] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: (1) This invention provides a real-time position and tilt angle monitoring device for scraper conveyors in coal mines. This invention directly detects the key motion parameters of the scraper conveyor in real time, with high detection accuracy, avoiding the cumulative error caused by indirect detection through the inertial navigation system, which is conducive to long-term stable operation.

[0016] (2) This invention combines the motion characteristics of adjacent middle grooves and hydraulic supports, and makes full use of key innovations such as groove side fixing hole installation, flexible sealing components, non-elastic deformation connectors, and telescopic precision measuring components, so that adjacent middle grooves that are spatially independent can be connected to form a logical unified whole.

[0017] (3) This invention is applied to the fully mechanized mining face of a smart mine to achieve real-time dynamic monitoring of the attitude change of the scraper conveyor. It is more closely related to the actual field application, and is easy to install, use and ensure reliability. The monitoring of key parameters is more accurate, real-time and reliable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the monitoring device for real-time detection of the status of a scraper conveyor provided by the present invention.

[0019] Figure 2 This is a schematic diagram of the monitoring device provided by the present invention installed on a scraper conveyor.

[0020] Figure 3 This is a schematic diagram of the monitoring device provided by the present invention.

[0021] Figure 4 yes Figure 3 A top-down view of the internal structure layout of the monitoring device.

[0022] Figure 5 This is a schematic diagram of the sensing unit structure provided in an embodiment of the present invention.

[0023] Figure 6 This is a block diagram of the computing unit circuit provided in an embodiment of the present invention.

[0024] In the diagram: 1. Groove side; 2. Groove side opening; 3. Cable groove; 4. Dumbbell pin placement; 5. Bracket fixing nut; 6. Fixed bracket A; 7. Fixed bracket B; 8. Monitoring component A; 9. Monitoring component B; 10. Bracket plane; 11. Calculation unit; 12. Sensing unit; 13. Fixing point; 14. Non-elastic deformation pull rope; 15. Indicator light; 16. Plug connector; 17. Power supply and communication line; 18. First flexible sealing component; 19. Sensing unit pull rope fixing point; 20. Sensing unit sealing shell; 21. Self-resetting spring; 22. Second flexible sealing component; 23. Telescopic moving body. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Example 1

[0026] like Figure 1 As shown, the monitoring device for sensing the real-time status of a scraper conveyor in a coal mine provided by the present invention can be used to detect the bending, extension and misalignment parameters of the scraper conveyor in real time. The fixed bracket A 6 and the fixed bracket B 7 are fixed on the trough side 1 through the trough side opening 2 in the middle section of the scraper conveyor and the bracket fixing nut 5.

[0027] The fixed bracket A6 can form a fulcrum or plane to connect the monitoring component A8, and the fixed bracket B7 can form a fulcrum or plane to connect the monitoring component B9. The monitoring component A and the monitoring component B are connected by the first flexible sealing component 18.

[0028] like Figure 2 As shown, in this embodiment, the fixed bracket A 6 and fixed bracket B 7 form a bracket plane 10. The bracket plane 10 is located outside the dumbbell pin placement location 4, in the space between the bottom of the scraper conveyor trough 1 and the ground. The dumbbell pin placement location 4 is embedded in the scraper conveyor, and the position of the bracket plane 10 can prevent the dumbbell pin from affecting the monitoring of the monitoring components.

[0029] like Figure 3 and 4 As shown, in this embodiment, the monitoring component A8 contains a computing unit 11 and three sensing units 12. The monitoring component B9 contains two fixed points 13. Two sensing units 12 are connected to one fixed point 13 via two inelastic deformation pull ropes 14, and the remaining sensing unit 12 is connected to the other fixed point 13. The monitoring component A8 is also equipped with an indicator light 15 and a plug connector 16.

[0030] The computing unit 11 and the sensing unit 12 are connected via a power supply and communication line 17. The two ends of the first flexible sealing component 18 are fixed to the monitoring component A and the monitoring component B respectively, providing waterproof, dustproof, and impact-proof protection; the non-elastic deformation pull rope 14 connects the fixing point 13 in the monitoring component B 9 and the pull rope fixing point 19 of the sensing unit. like Figure 5 As shown, the sensing unit is a completely sealed component, with one end sealed by the second flexible sealing component 22. The sensing unit 12 includes components such as a self-resetting spring 21, a sensing unit sealing shell 20, the second flexible sealing component 22, and a telescopic moving body 23. The telescopic moving body 23 is connected to a non-elastic deformation pull rope to sense the movement information of the pull rope.

[0031] like Figure 6 As shown, the computing unit 11 contains a main processor, a clock module, a power supply module, and a CAN communication module. It processes the sensing information of the sensing unit 12 and interacts with the outside world through the CAN bus.

[0032] The edge computing module includes a main processor, a clock module, a CAN communication module, and a power module; the power module provides power to the clock module, the main processor, and the CAN communication module, respectively.

[0033] 1) The main processor uses a GD32F405VGT6 main chip, which operates at 3.3V. In this embodiment, the vector measurement body 1 can be connected through pins PB10, PB11, and PD13, the vector measurement body 2 can be connected through pins PA8, PC9, and PD14, and the vector measurement body 3 can be connected through pins PB8, PB9, and PD15. The main processor has multiple pins for connecting and measuring multiple vector measurement bodies. After completing the measurement of vector parameters, the data is automatically uploaded from the main body of the vector measurement body.

[0034] 2) The clock module uses a DS1302S clock chip. The clock module facilitates the provision of accurate acquisition time for the recorded data.

[0035] 3) The power supply module uses the SD8942 chip to convert the external input 9~24VDC to 3.3VDC for use by the main chip GD32F405VGT6 and the clock chip DS1302S; and uses the B0305S to convert 3.3VDC to 5VDC for use by the CAN communication module.

[0036] 4) The CAN communication module is designed with two communication channels, CAN0 and CAN1. In CAN0, the TJA1050T / CM118 chip is used to drive the CAN protocol. A 6N137 device is used to isolate the output signal between the TJA1050T / CM118 chip and the GD32F405VGT6 chip. An SW-SPST device is used to isolate the input signal between the TJA1050T / CM118 chip and the GD32F405VGT6 chip, together completing the data transmission and reception.

[0037] In CAN1, the TJA1050T / CM118 chip is used to drive the CAN protocol. A 6N137 device is used between the TJA1050T / CM118 chip and the GD32F405VGT6 chip to achieve output signal isolation. An SW-SPST device is used between the TJA1050T / CM118 chip and the GD32F405VGT6 chip to achieve input signal isolation, together completing the data transmission and reception. Example 2

[0038] The monitoring method of the real-time position and tilt angle monitoring device for scraper conveyors in coal mines provided by the present invention includes three steps: 1. The monitoring device is installed on two adjacent scraper conveyors. The fixed bracket A and fixed bracket B are fixed to the two adjacent scraper conveyors respectively by using the existing openings on the scraper conveyors or by adding connecting components.

[0039] The fixed bracket is made of rigid material, and when fixed to the scraper conveyor trough, it does not deform or undergo relative displacement with respect to the fixed point. This invention makes full use of limited space by using a fixed bracket connected to the scraper conveyor to firmly fix the monitoring component to the trough side and achieve synchronous movement with it.

[0040] 2. The fixed bracket A forms a plane on which monitoring component A is suspended or placed, and the fixed bracket B forms a plane on which monitoring component B is suspended or placed. Monitoring component A and monitoring component B are connected by a flexible sealing component, with both ends of the flexible sealing component fixed to monitoring component A and monitoring component B respectively. The plane is located in the space between the bottom of the trench and the ground, while avoiding collision interference from the bracket push rod.

[0041] In this embodiment, the monitoring component A contains three sensing units and one computing unit. The three sensing units are placed on the same horizontal plane within the monitoring component A, with no relative displacement between them. Each sensing unit is a completely sealed component containing a self-resetting spring, with one end being a flexible seal that allows for extension and retraction, and also includes a fixing point for the sensing pull rope. Both the sensing unit and the computing unit are intrinsically safe circuits.

[0042] The monitoring component B has multiple fixed points, one of which is connected to two sensing units, and the remaining fixed points are connected to the remaining sensing units.

[0043] The sensing unit's pull rope fixing point in monitoring component A and the fixing point in monitoring component B are connected by a non-elastic deformation pull rope; the non-elastic deformation pull rope is in a taut state and placed inside the cavity of the first flexible sealing component 18. The pull rope material can specifically be steel wire or braided thread. Using a non-elastic deformation pull rope allows for the connection of adjacent, spatially independent central slots, forming a logically unified whole. The flexible sealing component satisfies both sealing requirements and dynamic changes, sensing the degree of bending, extension, and misalignment of the scraper conveyor.

[0044] Embodiments of the present invention can be implemented through hardware, mechanical structures, software, or a combination of software and hardware. The hardware portion can be implemented using dedicated measuring instruments, signal processing, and logic circuits; the software portion can be stored in a microprocessor and executed by an appropriate instruction execution system. Those skilled in the art will understand that the above-described devices and methods can be implemented using a microcontroller to handle data acquisition and communication. The devices and modules of the present invention can be implemented using hardware circuits such as very large-scale integrated circuits or gate arrays, semiconductors such as logic chips and transistors, or programmable hardware devices such as field-programmable gate arrays and programmable logic devices; they can also be implemented using software executed by various types of processors; or they can be implemented using a combination of the above-described hardware circuits and software, such as firmware.

[0045] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A monitoring device for sensing the real-time status of a scraper conveyor in a coal mine, characterized in that, The monitoring device includes a fixed bracket and a monitoring component. The monitoring component is connected to the scraper conveyor through the fixed bracket. The monitoring component includes a computing unit and a sensing unit, which are connected through a power supply and communication line. The monitoring components include monitoring component A and monitoring component B, which are connected by a first flexible sealing component; monitoring component A is provided with a sensing unit and a computing unit, and monitoring component B is provided with a fixed point, and the sensing unit is connected to the fixed point by a non-elastic deformation pull rope; The computing unit includes a main processor, a clock module, a power conversion module, and a CAN communication module. It is used to process the parameter information of the sensing unit and to interact with the outside world through the CAN bus; The sensing unit is used to monitor the real-time position, tilt angle, bending, extension and misalignment parameters of the scraper conveyor; The sensing unit is a sealing element, and the sensing unit includes a self-resetting spring and a telescopic moving body. The telescopic moving body is connected to a fixed point in the monitoring component B through a non-elastic deformation pull rope. The monitoring component is equipped with a fixed point, which is connected to the sensing unit. The fixed support includes fixed support A and fixed support B, and fixed support A and fixed support B are fixed on two adjacent scraper conveyors; The monitoring component is located in the space between the bottom of the scraper conveyor trough and the ground; The monitoring component A contains one computing unit and three sensing units. The monitoring component B has two fixed points, with two sensing units connected to one fixed point via two inelastic deformation ropes, and the remaining sensing units connected to the other fixed point. The non-elastic deformation pull rope is in a straightened state and placed inside the cavity of the first flexible sealing component.

2. The monitoring device for sensing the real-time status of a scraper conveyor in a coal mine according to claim 1, characterized in that, The monitoring component A is also equipped with indicator lights and plug connectors.

3. The monitoring device for sensing the real-time status of a scraper conveyor in a coal mine according to claim 1, characterized in that, The non-elastic deformation rope is made of steel wire or braided wire.

4. A monitoring method using the monitoring device according to claim 1, characterized in that, The monitoring method includes the following steps: S1: Fix the fixed brackets to two adjacent scraper conveyors respectively to achieve a fixed connection between the monitoring device and the adjacent scraper conveyors; S2: The monitoring component is connected to the fixed bracket, and the computing unit interacts with the outside through the plug connector; S3: The distance, tilt angle, bending or extension of the two scraper conveyors are measured and calculated in real time by the sensing unit, thereby sensing the real-time status of the scraper conveyors.

5. The monitoring method according to claim 4, characterized in that, The sensing unit and computing unit are intrinsically safe circuits.

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