Embedded wireless temperature cycle monitoring system of belt conveyor for coal mine

Abstract

The utility model discloses an embedded wireless temperature cycle monitoring system of a belt conveyor for a coal mine, which belongs to the technical field of conveyor temperature monitoring and comprises a wireless temperature sensor, a wireless signal acquisition device, a fixed receiving device, an environment temperature sensor and a data processing and control device. Wireless temperature sensors are arranged on the driving motor, the roller and the carrier roller; a wireless signal acquisition device is fixedly mounted on the conveying belt; the fixed receiving device is installed on the wall body beside the belt conveyor, the fixed receiving device is in communication connection with the environment temperature sensor, the environment temperature sensor is installed on the wall body beside the fixed receiving device, and the wireless temperature sensor is in wireless communication connection with the fixed receiving device. And the fixed receiving device is in communication connection with the data processing and control device. According to the utility model, the temperature of key positions such as a driving motor, a roller, a carrier roller, a machine head or a machine tail of the belt conveyor and the surrounding environment of the belt conveyor can be comprehensively monitored in real time.

Description

Technical Field

[0001] This utility model belongs to the field of conveyor temperature monitoring technology, specifically relating to an embedded wireless temperature cycle monitoring system for belt conveyors used in coal mines, which can be used for temperature monitoring of belt conveyor equipment in underground coal mines and temperature monitoring of the operating environment of belt conveyor equipment. Background Technology

[0002] Mining belt conveyors are a crucial component of underground mining transportation systems. During prolonged operation, key components such as idlers, drums, and drive motors are prone to temperature increases due to frictional heat, poor lubrication, or abnormal loads. If abnormal idler temperatures are not detected and addressed promptly, they can lead to increased conveyor belt temperature due to friction, igniting coal dust or other flammable materials, potentially causing a fire and seriously threatening mine safety. Therefore, real-time monitoring and timely warning of idler temperatures are of paramount importance for ensuring safe coal mine production.

[0003] Temperature monitoring methods for mining belt conveyors mainly include traditional manual inspection, existing wireless / wired temperature measurement systems, and existing infrared temperature measurement technology. Firstly, traditional manual inspection relies on personnel periodically checking the temperature of the conveyor's idlers, drums, and drive motors. However, the complex underground environment of coal mines and the long conveyor lines result in low real-time performance and accuracy of manual inspections, making it difficult to meet the needs of real-time monitoring. Secondly, existing wireless temperature measurement systems transmit temperature data through communication between fixed-point wireless temperature testing terminals and distributed temperature relay terminals. These distributed relay terminals then transmit the data to an underground base station. The complex electromagnetic environment underground affects the transmission distance of wireless signals, and a single mining belt conveyor requires a large number of distributed temperature relay terminals, leading to poor system stability and a heavy maintenance workload. Thirdly, existing wired temperature measurement systems transmit temperature data via fiber optic cables, achieving a certain degree of automation. However, the wiring is complex, construction and maintenance costs are high, and during conveyor operation, the fiber optic cable may be detached or damaged by external forces, reducing system reliability. Existing infrared temperature measurement technology has the advantage of non-contact temperature measurement, but in the underground coal mine environment, it is affected by factors such as coal dust, water vapor, conveyor belts and coal piles, resulting in large measurement errors and high equipment costs.

[0004] Therefore, in order to address the above problems, there is an urgent need to provide a more flexible and efficient embedded wireless temperature circulation monitoring system for coal mine belt conveyors, so as to achieve comprehensive and real-time temperature monitoring for mine belt conveyors. Utility Model Content

[0005] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing an embedded wireless temperature circulation monitoring system for belt conveyors used in coal mines. Compared to existing temperature monitoring methods, this embedded wireless temperature circulation monitoring system for belt conveyors in coal mines requires only a small amount of equipment to collect and transmit temperature information from the conveyor's idlers, drums, and drive motor, as well as the ambient temperature of the conveyor's operating environment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution.

[0007] This utility model provides an embedded wireless temperature circulation monitoring system for a belt conveyor used in coal mines. The belt conveyor is installed next to a wall and includes a drive motor, rollers, idlers, and a conveyor belt. The drive motor is connected to the rollers, which rotate under the drive motor's influence, thereby driving the conveyor belt to run on the idlers. The wireless temperature circulation monitoring system includes a wireless temperature sensor, a wireless signal acquisition device, a fixed receiver, an ambient temperature sensor, and a data processing and control device. Wireless temperature sensors are installed on the drive motor, rollers, and idlers. The wireless signal acquisition device is fixedly installed on the conveyor belt. The fixed receiver is installed on the wall next to the belt conveyor and is communicatively connected to the ambient temperature sensor. The ambient temperature sensor is installed on the wall next to the fixed receiver. The wireless temperature sensor is wirelessly connected to the fixed receiver, and the fixed receiver is communicatively connected to the data processing and control device.

[0008] Furthermore, wireless temperature sensors are installed on the side of each idler and drum of the belt conveyor, and wireless temperature sensors are also installed on the housing of the drive motor of the belt conveyor.

[0009] Furthermore, a wireless signal acquisition device is fixedly installed on the conveyor belt using anchors. The wireless signal acquisition device is fixedly installed at a reasonable position on the conveyor belt where it will not collide with the idler rollers.

[0010] Furthermore, the fixed receiving device is installed on the wall opposite to the head and tail positions of the belt conveyor.

[0011] Furthermore, the wireless temperature cycle monitoring system also includes a multi-level early warning system and a cloud platform, with the data processing and control device communicating with the multi-level early warning system and the cloud platform respectively.

[0012] Furthermore, the wireless temperature sensor is an explosion-proof wireless temperature sensor of model SNT-T300 or SNT-T103G / M.

[0013] Furthermore, the ambient temperature sensor adopts the KG3007A mining temperature sensor, which has a simple structure and meets the explosion-proof standards for coal mines.

[0014] The beneficial effects of this utility model are:

[0015] Compared with existing technologies, the embedded wireless temperature circulation monitoring system for belt conveyors in coal mines provided by this utility model can comprehensively and in real time monitor the temperature of key positions such as the drive motor, drums, idlers, head or tail of the belt conveyor, as well as the ambient temperature around the belt conveyor. This utility model has advantages such as no need for complex wiring, flexible deployment, and low system maintenance costs. It can also operate stably in underground environments with high dust, high humidity, and high interference, and has good adaptability to coal mines.

[0016] This invention, through the cooperation of a wireless temperature sensor, an ambient temperature sensor, a wireless signal acquisition device, a fixed receiving device, and a data processing and control device, realizes a wireless temperature acquisition and cyclic data transmission mechanism, which greatly improves the real-time performance and accuracy of temperature monitoring, reduces the workload of operators, and effectively enhances the operational safety and intelligence level of belt conveyors used in coal mines. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embedded wireless temperature circulation monitoring system for a coal mine belt conveyor, which is installed in conjunction with the belt conveyor.

[0018] Figure 2 This is a schematic block diagram of the circuit connection structure of an embedded wireless temperature cycle monitoring system for a belt conveyor in a coal mine.

[0019] The markings in the diagram are: 1-Drum; 2-Idler roller; 3-Conveyor belt; 4-Wireless temperature sensor; 5-Wireless signal acquisition device; 6-Anchor; 7-Fixed receiver; 8-Ambient temperature sensor; 9-Wall; 10-Data processing and control device; 11-Multi-level early warning system; 12-Cloud platform. Detailed Implementation

[0020] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Combination Figure 1 and Figure 2As shown in the figure, this utility model provides an embedded wireless temperature circulation monitoring system for a coal mine belt conveyor. The belt conveyor is installed next to a wall 9 and includes a drive motor, a drum 1, idlers 2, and a conveyor belt 3. The drive motor is connected to the drum 1, which rotates under the drive of the drive motor, thereby driving the conveyor belt 3 to run on the idlers 2. The wireless temperature circulation monitoring system includes a wireless temperature sensor 4, a wireless signal acquisition device 5, a fixed receiver 7, an ambient temperature sensor 8, and a data processing and control device 10. Wireless temperature sensors 4 are installed on the drive motor, drum 1, and idlers 2. The wireless signal acquisition device 5 is fixedly installed on the conveyor belt 3; a fixed receiving device 7 is installed on the wall 9 next to the belt conveyor, and the fixed receiving device 7 is connected to the ambient temperature sensor 8 via a transmission line. The ambient temperature sensor 8 is installed on the wall 9 next to the fixed receiving device 7 and is used to synchronously monitor the temperature changes of the belt conveyor's operating environment, providing auxiliary data for anomaly identification and dynamic threshold adjustment; the wireless temperature sensor 4 is wirelessly connected to the fixed receiving device 7, and the fixed receiving device 7 is connected to the data processing and control device 10 via a transmission line.

[0022] As a preferred embodiment, a wireless temperature sensor 4 is installed on the side of each idler roller 2 and drum 1 of the belt conveyor, and a wireless temperature sensor 4 is also installed on the housing of the drive motor of the belt conveyor. The wireless temperature sensor 4 is used to monitor the temperature of the idler roller 2, drum 1, and drive motor in real time. Each idler roller 2 and drum 1 is equipped with an independent wireless temperature sensor 4, which has a magnetic attraction device. The magnetic attraction device can firmly attach it to any position on the side of the idler roller 2 and drum 1, ensuring that it will not loosen or fall off during the operation of the conveyor belt 3, thereby always being able to stably and accurately monitor the temperature of the idler roller 2 and drum 1. The wireless temperature sensor 4 transmits the real-time collected temperature data to the wireless signal acquisition device 5 through low-power wireless communication technology, such as Zigbee, Wi-Fi, or LoRa, ensuring that the data can be transmitted in a timely manner and processed subsequently.

[0023] As a preferred embodiment, a wireless signal acquisition device 5 is fixedly installed on the conveyor belt 3 by anchors 6. The wireless signal acquisition device 5 is fixedly installed at a reasonable position on the conveyor belt 3 where it will not collide with the idler roller 2. The wireless signal acquisition device 5 runs cyclically as the conveyor belt 3 moves. When the wireless signal acquisition device 5 approaches the idler roller 2 and the drum 1, it can automatically receive the data collected by the corresponding wireless temperature sensor 4 and forward it to the fixed receiving device 7.

[0024] Specifically, the wireless signal acquisition devices 5 are deployed at equal intervals. The number and spacing of these devices can be flexibly adjusted based on factors such as the length of the conveyor belt 3, the transmission frequency, and the degree of signal attenuation underground, to meet the data coverage requirements in different scenarios. Adjacent wireless signal acquisition devices 5 can be interconnected via short-range wireless communication to form a distributed data forwarding network with a "relay" data transmission function. This mechanism ensures that even if the signal transmission of one wireless signal acquisition device 5 fails, other devices can still operate normally, guaranteeing the stability and continuity of data transmission.

[0025] As a preferred embodiment, the fixed receiving device 7 is installed on the wall 9 opposite to the head and tail positions of the belt conveyor. The fixed receiving device 7 can receive temperature data transmitted from the wireless signal acquisition device 5 when the wireless signal acquisition device 5 is close.

[0026] Specifically, after the wireless signal acquisition device 5 acquires the temperature data, when it moves with the conveyor belt 3 to a position close to the fixed receiving device 7 located on the wall 9 near the head and tail of the belt conveyor, the fixed receiving device 7 receives and initially integrates the temperature data from each signal acquisition device, and simultaneously acquires the ambient temperature data from the ambient temperature sensor 8.

[0027] As a preferred embodiment, the wireless temperature cycle monitoring system further includes a multi-level early warning system 11 and a cloud platform 12, with the data processing and control device 10 communicating with the multi-level early warning system 11 and the cloud platform 12 respectively.

[0028] As a preferred option, the wireless temperature sensor 4 is an explosion-proof wireless temperature sensor of model SNT-T300 or SNT-T103G / M.

[0029] As a preferred embodiment, the ambient temperature sensor 8 is a KG3007A type mining temperature sensor. This model of mining temperature sensor has a simple structure and meets the explosion-proof standards for coal mines. Specifically, the ambient temperature sensor 8 is connected to the fixed receiving device 7 via a wired connection to monitor the temperature environment around the belt conveyor in real time, so as to perform temperature difference correction in subsequent analysis and eliminate the risk of false alarms caused by environmental fluctuations.

[0030] The data processing and control device 10 centrally processes and analyzes the collected temperature data from the idler rollers 2, drums 1, and the environment. It features functions such as temperature difference calculation, anomaly identification, visualization, and alarm logic judgment. The data processing and control device 10 receives and manages all temperature data from the fixed receiving device 7, and can upload it to the cloud platform 12 for long-term storage and big data analysis. The cloud platform 12 has data visualization capabilities, generating real-time temperature change curves for each monitoring point, which operators can view and analyze trends. When the temperature at any monitoring point exceeds a predetermined threshold, the data processing and control device 10 automatically triggers the warning mechanism of the multi-level early warning system 11, reminding operators to promptly check or repair the relevant equipment to prevent equipment malfunctions from escalating into safety accidents.

[0031] Furthermore, the wireless temperature cycle monitoring system of this invention introduces a multi-level early warning mechanism of a multi-level early warning system 11 to address different levels of risk:

[0032] Mild warning: When the current temperature of any idler roller 2 or drum 1 exceeds the average of its previous 3 temperature measurements +2℃, the multi-level warning system 11 issues a mild warning to prompt the operator to conduct an inspection.

[0033] Moderate warning: When the temperature exceeds the average of the previous 3 times + 5℃, a moderate warning is triggered. The multi-level warning system 11 will require the operator to immediately stop the machine for inspection to prevent the fault from escalating.

[0034] Emergency Warning: When the temperature of drum 1 exceeds 60℃ or the temperature of the drive motor exceeds 100℃, the multi-level warning system 11 will automatically trigger an emergency stop command, activate the automatic fire extinguishing device, and issue an audible and visual alarm signal to remind the operator to take emergency measures.

[0035] This tiered early warning mechanism can accurately identify fire hazards and respond in stages, minimizing false alarms and missed alarms, and effectively improving the response efficiency and timeliness of handling abnormal temperatures.

[0036] All historical and real-time data are centrally managed through the cloud platform 12, which has powerful data analysis and visualization capabilities. It can automatically generate temperature change trend charts of idlers and drums, operating cycle temperature reports, abnormal event records, etc., for managers to make scientific decisions and diagnose faults.

[0037] In summary, the wireless temperature monitoring system for coal mine belt conveyors provided by this invention has significant advantages such as flexible structural layout, high monitoring accuracy, strong anti-interference ability, and a sound early warning mechanism. It can operate stably for a long time in complex coal mine operating environments, effectively ensuring the operational safety of conveyor equipment and the personal safety of operators.

[0038] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. An embedded wireless temperature circulation monitoring system for a belt conveyor used in coal mines, wherein the belt conveyor is installed next to a wall, and the belt conveyor includes a drive motor, a drum, idlers, and a conveyor belt. The drive motor is connected to the drum, and the drum rotates under the drive of the drive motor, thereby driving the conveyor belt to run on the idlers; characterized in that: The wireless temperature cycle monitoring system includes a wireless temperature sensor, a wireless signal acquisition device, a fixed receiving device, an ambient temperature sensor, and a data processing and control device. Wireless temperature sensors are installed on the drive motor, rollers, and idlers. The wireless signal acquisition device is fixedly installed on the conveyor belt. A fixed receiving device is installed on the wall next to the belt conveyor, and the fixed receiving device is communicatively connected to the ambient temperature sensor. The ambient temperature sensor is installed on the wall next to the fixed receiving device. The wireless temperature sensor is wirelessly connected to the fixed receiving device, and the fixed receiving device is communicatively connected to the data processing and control device.

2. The embedded wireless temperature cycle monitoring system for coal mine belt conveyor according to claim 1, characterized in that: Wireless temperature sensors are installed on the side of each idler and drum of the belt conveyor, and wireless temperature sensors are also installed on the housing of the drive motor of the belt conveyor.

3. The embedded wireless temperature cycle monitoring system for a coal mine belt conveyor according to claim 1, characterized in that: A wireless signal acquisition device is fixedly installed on the conveyor belt using anchors. The wireless signal acquisition device is fixedly installed at a reasonable position on the conveyor belt where it will not collide with the idler rollers.

4. The embedded wireless temperature cycle monitoring system for a coal mine belt conveyor according to claim 1, characterized in that: The fixed receiving device is installed on the wall opposite the head and tail positions of the belt conveyor.

5. The embedded wireless temperature cycle monitoring system for a coal mine belt conveyor according to claim 1, characterized in that: The wireless temperature cycle monitoring system also includes a multi-level early warning system and a cloud platform, with the data processing and control device communicating with the multi-level early warning system and the cloud platform respectively.

6. The embedded wireless temperature cycle monitoring system for a coal mine belt conveyor according to claim 1, characterized in that: The wireless temperature sensor is an explosion-proof wireless temperature sensor of model SNT-T300 or SNT-T103G / M.

7. The embedded wireless temperature cycle monitoring system for a belt conveyor in a coal mine according to claim 1, characterized in that: The ambient temperature sensor used is the KG3007A mining temperature sensor.

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