Device for detecting safety performance of mining belt conveyor

Abstract

The utility model discloses a device for detecting the safety performance of a mining belt conveyor. The device comprises a speed sensor, a pressure sensor, a displacement sensor, a tilt angle sensor, a vibration sensor, a weighing sensor, a tension and pressure sensor, a temperature, humidity and atmospheric pressure sensor, a tablet terminal and a computer terminal which are arranged on an underground belt conveyor device. All components of the device are provided with zigbee wireless modules, and each module comprises a high-performance wireless microcontroller with the model of JN5161A and a completely integrated front-end module with the model of RFX2401C. The device for detecting the safety performance of the mining belt conveyor can comprehensively measure and display the speed, the brake oil pressure, the carrier roller displacement, the axial vibration speed, the radial vibration speed, the tension and pressure, the weighing, the angle, the environment temperature, the environment humidity and the atmospheric pressure of the mining belt conveyor. The measurement parameters can be wirelessly sent to a tablet terminal and a computer terminal and displayed in real time through double terminals of an app of a tablet and an upper computer of a computer, and curve graphs and reports can be output, and early warning prompts and the like can be carried out.

Description

Technical Field

[0001] The utility model relates to the field of mining belt conveyor detection, in particular to a device for detecting the safety performance of mining belt conveyors. Background Art

[0002] With the rapid development of society and economy, my country's coal mining industry has gained greater development space and its production efficiency has been continuously improved, which is closely related to the increasingly improved underground transportation system of coal mines. In the process of coal mine production and transportation, the performance of underground belt conveyors has a direct impact on the production efficiency of coal mining enterprises. How to effectively strengthen the management of belt conveyors is an important issue currently facing coal mining enterprises. Belt conveyors are an important equipment in the production of coal mining enterprises. The stability and safety of belt conveyor operation directly affect the production efficiency of coal mining enterprises. In the traditional management of belt transportation systems, manual control is mainly carried out by on-site staff. If there is negligence, it may lead to safety accidents, and the results of manual detection and control often have errors. In this case, the safety management of belt transportation systems has received more and more attention.

[0003] The hidden dangers in mining belt conveyor equipment are mainly manifested in the fact that there are problems in coal mining enterprises such as belt conveyors being too old, running at excessive speeds, insufficient braking force, excessive roller swing, excessive operating load, and excessive vibration of belt conveyors and couplings. If the equipment is not maintained, inspected and updated in a timely manner, there will be serious safety hazards. At the very least, the belt conveyor equipment will be shut down, and at worst, it will cause equipment fires and underground gas explosions, which will eventually lead to serious production safety accidents.

[0004] In order to reduce the occurrence of accidents, we should strengthen the inspection of equipment, and should conduct safety performance inspections on the speed, brake oil pressure, roller displacement, axial vibration speed, radial vibration speed, tension, weighing, angle, ambient temperature, ambient humidity, atmospheric pressure, etc. of the belt conveyor. The safety and effectiveness of the operation of the underground belt conveyor system in coal mines have an important impact on the production efficiency of coal mining enterprises. Therefore, coal mining enterprises should take effective measures from several aspects, such as strengthening the safety management awareness of the belt conveyor system, strengthening the management of quality standardization system, strengthening equipment inspection, maintenance and maintenance, and strengthening the inspection of belt conveyor systems, to prevent the occurrence of belt transportation safety accidents, ensure the safety of coal mine production, and promote the continuous improvement of the production efficiency of coal mining enterprises. Summary of the invention

[0005] The technical problem to be solved by the utility model is to overcome the above technical defects. The utility model provides a device for detecting the safety performance of a mining belt conveyor. The device for detecting the safety performance of a mining belt conveyor of the utility model can comprehensively detect the safety performance parameters of the mining belt conveyor, such as speed, brake oil pressure, roller displacement, axial vibration speed, radial vibration speed, tension, weighing, angle, ambient temperature, ambient humidity, and atmospheric pressure. The above measurement parameters can be wirelessly sent to a tablet terminal and a computer terminal, and displayed in real time through the tablet app and the computer host dual terminal, and can also output curve graphs and reports for early warning prompts.

[0006] To achieve the technical purpose, the technical solution of the utility model is: a device for detecting the safety performance of a mining belt conveyor, including a speed sensor, a pressure sensor, a displacement sensor, an inclination sensor, a vibration sensor, a weighing sensor, a tension and pressure sensor, a temperature, humidity and atmospheric pressure sensor, as well as a tablet terminal and a computer terminal installed on an underground belt conveyor device.

[0007] All components of the device are equipped with zigbee wireless modules.

[0008] Furthermore, the speed sensor, pressure sensor, displacement sensor, inclination sensor, vibration sensor, weighing sensor, tension pressure sensor, temperature, humidity and atmospheric pressure sensor also include a dual protection circuit of the battery protection board, and the battery management circuit includes an 8261-G3P lithium battery protection IC and an 8205A dual MOS power tube chip.

[0009] Furthermore, the speed sensor includes a high-speed magnetic encoder of model MT6701CT-A200 and a first controller of model HC32L130J8TA.

[0010] Furthermore, the pressure sensor includes a silicon piezoresistive pressure core with a model number of PC10-60MS4W and a second controller with a model number of BH66F5242.

[0011] Furthermore, the displacement sensor includes an eddy current coil of model ZD-260, operational amplifiers of model LM258 and LM321G, an analog-to-digital conversion chip of model AD7799BRUZ-REEL, and a third controller of model GD32E230C8T6.

[0012] Furthermore, the inclination sensor includes a three-axis inclinometer of model SCL3300-D01 and a fourth controller of model GD32E230C8T6.

[0013] Furthermore, the vibration sensor includes a three-axis accelerometer of model KXD94 and a fifth controller of model STM32F103RBT6.

[0014] Furthermore, the weighing sensor includes a full-bridge weighing strain gauge of model YZL928NB, an analog-to-digital converter of model HY3116, and a sixth controller of model STM32F103RCT6.

[0015] Furthermore, the tension and pressure sensor includes a GJBLS-1s tension and pressure sensor, an AD620A operational amplifier, and a STC12C5A60S2 seventh controller.

[0016] Furthermore, the temperature, humidity and atmospheric pressure sensor includes a digital temperature and humidity sensor of model SHT35, an atmospheric pressure sensor of model MS5607B, and an eighth controller of model HC32L130J8TA.

[0017] Furthermore, the speed sensor, pressure sensor, displacement sensor, inclination sensor, vibration sensor, weighing sensor, tension pressure sensor, temperature and humidity atmospheric pressure sensor, and the zigbee wireless module equipped with the tablet terminal and computer terminal include a high-performance wireless microcontroller model JN5161A and a fully integrated front-end module model RFX2401C.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model adopts a dual-terminal mode of tablet terminal and computer terminal. The tablet terminal adopts Android system equipped with app detection software, and the computer terminal adopts win10 system equipped with host computer software, both of which can export test data and test reports for subsequent customer analysis.

[0020] 2. The utility model can simultaneously realize wireless interconnection of speed sensors, pressure sensors, displacement sensors, inclination sensors, vibration sensors, weighing sensors, tension and pressure sensors, temperature and humidity and atmospheric pressure sensors with tablet terminals and computer terminals, and simultaneously obtain the speed, brake oil pressure, roller displacement, axial vibration speed, radial vibration speed, tension and pressure, weighing, angle, ambient temperature, ambient humidity and atmospheric pressure of the belt conveyor. It has the advantages of real-time and fast testing, no need for wiring, long transmission distance, simple operation, and greatly improved work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of the detection device of the utility model;

[0022] Figure 2This is the circuit schematic diagram of the utility model lithium battery protection IC and dual MOS power tube chip;

[0023] Figure 3 This is the circuit schematic diagram of the utility model high-speed magnetic encoder;

[0024] Figure 4 It is the circuit principle diagram of the first controller of the utility model;

[0025] Figure 5 This is a circuit schematic diagram of the silicon piezoresistive pressure core and the second controller of the utility model;

[0026] Figure 6 It is the circuit principle diagram of the eddy current coil and operational amplifier of the utility model;

[0027] Figure 7 It is the circuit principle diagram of the operational amplifier of the utility model;

[0028] Figure 8 This is a circuit schematic diagram of the analog-to-digital conversion chip of the utility model;

[0029] Fig. 9 It is the circuit principle diagram of the third controller of the utility model;

[0030] Fig.10 It is the circuit principle diagram of the three-axis inclinometer of the utility model;

[0031] Fig.11 This is a circuit diagram of the fourth controller of the utility model;

[0032] Fig.12 It is the circuit principle diagram of the three-axis accelerometer of the utility model;

[0033] Fig.13 This is a circuit diagram of the fifth controller of the utility model;

[0034] Fig.14 It is the circuit principle diagram of the full-bridge weighing strain gauge and analog-to-digital converter of the utility model;

[0035] Fig.15 It is the circuit principle diagram of the sixth controller of the utility model;

[0036] Fig.16 It is the circuit principle diagram of the pull-pressure sensor and operational amplifier of the utility model;

[0037] Fig.17 It is the circuit principle diagram of the seventh controller of the utility model;

[0038] Fig.18 This is the circuit schematic diagram of the utility model digital temperature and humidity sensor;

[0039] Fig.19 This is a circuit schematic diagram of the utility model atmospheric pressure sensor;

[0040] Fig. 20 It is the circuit principle diagram of the eighth controller of the utility model;

[0041] Fig.21 The utility model is a circuit schematic diagram of a wireless microcontroller and a front-end module. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0043] A device for detecting the safety performance of a mining belt conveyor, such as Figure 1 As shown, it includes speed sensors, pressure sensors, displacement sensors, inclination sensors, vibration sensors, weighing sensors, tension and pressure sensors, temperature, humidity and atmospheric pressure sensors, as well as tablet terminals and computer terminals installed on the underground belt conveyor device; all components of the device are equipped with ZigBee wireless modules for sending the collected parameters wirelessly, and the dual terminals receive the wireless signals and process them for real-time display.

[0044] Further, if Figure 2 As shown, the speed sensor, pressure sensor, displacement sensor, inclination sensor, vibration sensor, weighing sensor, tension pressure sensor, temperature and humidity atmospheric pressure sensor also include a dual protection circuit for the battery protection board, and the battery management circuit includes an 8261-G3P lithium battery protection IC, an 8205A dual MOS power tube chip, etc., to meet the explosion-proof requirements of coal mines. B+ and B- are connected to the positive and negative poles of the lithium battery, and P+ and P- are connected to the input ends of the positive and negative power supplies of the circuit board. The DOUT pin of the 8261-G3P lithium battery protection IC is connected to the gate connection terminal of the MOSFET for discharge control, the COUT pin is connected to the gate connection terminal of the MOSFET for charging control, and the V- pin is used for the overcurrent detection input terminal and the charger detection terminal; the 8205A dual MOS power tube chip has two MOS tubes connected in series inside, and the gate is controlled to realize the on and off of the subsequent circuit connected to the MOS tube to achieve double protection.

[0045] Further, if Figure 3 and Figure 4As shown, the speed sensor includes a high-speed magnetic encoder of model MT6701CT-A200 and a first controller of model HC32L130J8TA. One side of the speed sensor speed shaft is connected to the speed dial, and the other side is connected to a small bar magnet, which is located just above the MT6701CT-A200 high-speed magnetic encoder. The chip contains two pairs of differential Hall Wheatstone bridges placed at 90° to each other, which can sense the Z-axis magnetic field component of the rotating magnet on the XY plane of the chip, and output two sinusoidal voltage signals as the magnetic field angle a changes. After subsequent amplification, compensation and calculation by the dedicated circuit, the angle value is obtained and output to the first controller through the ABZ interface (A, B, Z pins of the encoder). The speed dial of the speed sensor is fixed on the belt of the belt conveyor to measure the running speed of the belt and observe whether the belt conveyor is transmitting normally within the specified speed range.

[0046] Further, if Figure 5 As shown, the pressure sensor includes a silicon piezoresistive pressure core of model PC10-60MS4W and a second controller of model BH66F5242. The silicon piezoresistive pressure core of PC10-60MS4W is a Φ20*1.6 threaded joint installed on the spare pressure head of the pressure gauge of the oil pressure station. The silicon piezoresistive pressure core is powered by VCC, and the collected pressure value data is processed and connected to the second controller through the I2C interface (OCDSDA, OCDSCL pins). The pressure sensor is tightened on the oil pressure station to detect whether the oil pressure is within the oil pressure range specified by the belt conveyor manufacturer.

[0047] Further, if Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the displacement sensor includes an eddy current coil of model ZD-260, operational amplifiers of model LM258 and LM321G, an analog-to-digital conversion chip of model AD7799BRUZ-REEL, and a third controller of model GD32E230C8T6. The output signal of the eddy current coil of the ZD-260 is processed by the LM258 operational amplifier circuit to output a 0-5v voltage signal, and the voltage signal is output through the LM321G operational amplifier follower circuit and divided into a voltage A_SEN by R11 and R12. The A_SEN voltage signal converts the collected analog signal into a digital signal through the analog-to-digital conversion chip of AD7799BRUZ-REEL, and is connected to the third controller through the AD_DIN, AD_DOUT, AD_CS, and AD_SCLK pins. The displacement sensor is fixed on the support of the mining belt conveyor, and the sensor probe is about 5mm away from the roller to detect the radial and axial runout distances of the roller when the belt conveyor is working normally to see whether it is within the runout range specified by the belt conveyor manufacturer.

[0048] Further, if Fig.10 and Fig.11 As shown, the inclination sensor includes a three-axis inclinometer of model SCL3300-D01 and a fourth controller of model GD32E230C8T6. The three-axis inclinometer of SCL3300-D01 connects the angle data of the X, Y, and Z axes to the fourth controller via SPI (MISO, MOSI, SCK, and CSB pins). The inclinometer is fixed on the base of the belt conveyor and kept in close contact with the base to detect whether the belt conveyor is still at the installation angle specified by the manufacturer, so that large angle changes caused by long-term vibration and other reasons can be corrected in time.

[0049] Further, if Fig.12 and Fig.13 As shown, the vibration sensor includes a three-axis accelerometer of model KXD94 and a fifth controller of model STM32F103RBT6. The three-axis accelerometer of KXD94 connects the vibration data of the Z axis to the fifth controller through the pin ADC_SENSOR. The vibration sensor is magnetically fixed to the motor, the belt conveyor and the coupling to detect the vibration of the belt conveyor and prevent the vibration from exceeding the safety range designed by the manufacturer and damaging the equipment.

[0050] Further, if Fig.14 and Fig.15 As shown, the weighing sensor includes a full-bridge weighing strain gauge of model YZL928NB, an analog-to-digital converter of model HY3116, and a sixth controller of model STM32F103RCT6. The weighing sensor connects the output of the full-bridge weighing strain gauge of YZL928NB to the analog-to-digital converter of HY3116, and the output of the analog-to-digital converter is connected to the sixth controller through I2C (HY_SCL and HY_SDA). The weighing sensor is installed on the bottom or one side of the belt conveyor, and the sensor is installed on the bracket to detect the weight of the object on the belt conveyor to see if it is within the designed load-bearing range of the belt conveyor.

[0051] Further, if Fig.16 and Fig.17As shown, the tension pressure sensor includes a GJBLS-1s tension pressure sensor, an AD620A operational amplifier, and a STC12C5A60S2 seventh controller. The GJBLS-1s tension pressure sensor adopts a pressure strain resistor full-bridge circuit design. The voltage signal on the strain resistor is connected to the AD620A operational amplifier circuit to output a 4-20mA current signal. The current signal is connected to R20 ground. The P1.5 pin of the seventh controller is connected to R20 through R19 to measure the 1-5V voltage signal on the R20 resistor. The tension stress sensor is connected to the hydraulic brake. When the belt conveyor presses the brake button, the value of the tension pressure sensor is read to see if it is within the braking force range designed by the belt conveyor manufacturer.

[0052] Further, if Fig.18 , Fig.19 , Fig. 20 As shown, the temperature, humidity and atmospheric pressure sensor includes a digital temperature and humidity sensor of model SHT35, an atmospheric pressure sensor of model MS5607B, and a third controller of model HC32L130J8TA. The SCL and SDA pins of the digital temperature and humidity sensor and the SCLK and SDI / SDA pins of the atmospheric pressure sensor are respectively connected to the I2C bus of the third controller. The temperature, humidity and atmospheric pressure sensor is installed and fixed above the lane where the belt conveyor works to check the temperature, humidity and atmospheric pressure of the working environment of the belt conveyor.

[0053] Further, if Fig.21 As shown, the speed sensor, pressure sensor, displacement sensor, inclination sensor, vibration sensor, weighing sensor, tension pressure sensor, temperature and humidity atmospheric pressure sensor, tablet terminal and computer terminal respectively include zigbee wireless modules, which include a high-performance wireless microcontroller model JN5161A and a fully integrated front-end module model RFX2401C. The zigbee wireless module transmits the data processed and collected by the controller to the zigbee wireless modules of the tablet terminal and computer terminal. The tablet terminal and computer terminal parse the data received by the wireless module, present the collected data in the form of numerical values, graphics, and reports, and provide early warning prompts, etc.

[0054] For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the utility model, which all fall within the protection scope of the utility model.

Claims

1. A device for detecting the safety performance of a mining belt conveyor, characterized in that: Including speed sensors, pressure sensors, displacement sensors, inclination sensors, vibration sensors, weighing sensors, tension and pressure sensors, temperature, humidity and atmospheric pressure sensors, as well as tablet terminals and computer terminals installed on underground belt conveyor devices; All components of the device are equipped with zigbee wireless modules.

2. The device for detecting the safety performance of a mining belt conveyor according to claim 1, characterized in that: The speed sensor, pressure sensor, displacement sensor, inclination sensor, vibration sensor, weighing sensor, tension pressure sensor, temperature, humidity and atmospheric pressure sensor also include a dual protection circuit of the battery protection board, and the battery management circuit includes an 8261-G3P lithium battery protection IC and an 8205A dual MOS power tube chip.

3. The device for detecting the safety performance of a mining belt conveyor according to claim 2, characterized in that: The speed sensor includes a high-speed magnetic encoder of model MT6701CT-A200 and a first controller of model HC32L130J8TA.

4. The device for detecting the safety performance of a mining belt conveyor according to claim 2, characterized in that: The pressure sensor includes a silicon piezoresistive pressure core with a model number of PC10-60MS4W and a second controller with a model number of BH66F5242.

5. The device for detecting the safety performance of a mining belt conveyor according to claim 2, characterized in that: The displacement sensor includes an eddy current coil of model ZD-260, operational amplifiers of model LM258 and LM321G, an analog-to-digital conversion chip of model AD7799BRUZ-REEL, and a third controller of model GD32E230C8T6.

6. The device for detecting the safety performance of a mining belt conveyor according to claim 2, characterized in that: The inclination sensor includes a three-axis inclinometer of model SCL3300-D01 and a fourth controller of model GD32E230C8T6.

7. The device for detecting the safety performance of a mining belt conveyor according to claim 2, characterized in that: The vibration sensor includes a three-axis accelerometer of model KXD94 and a fifth controller of model STM32F103RBT6.

8. The device for detecting the safety performance of a mining belt conveyor according to claim 2, characterized in that: The weighing sensor includes a full-bridge weighing strain gauge of model YZL928NB, an analog-to-digital converter of model HY3116, and a sixth controller of model STM32F103RCT6.

9. The device for detecting the safety performance of a mining belt conveyor according to claim 2, characterized in that: The tension and pressure sensor comprises a tension and pressure sensor of model GJBLS-1s, an operational amplifier of model AD620A, and a seventh controller of model STC12C5A60S2.

10. The device for detecting the safety performance of a mining belt conveyor according to claim 2, characterized in that: The temperature, humidity and atmospheric pressure sensor comprises a digital temperature and humidity sensor of model SHT35, an atmospheric pressure sensor of model MS5607B and an eighth controller of model HC32L130J8TA.

11. The device for detecting safety performance of a mining belt conveyor according to claim 1, characterized in that: The speed sensor, pressure sensor, displacement sensor, inclination sensor, vibration sensor, weighing sensor, tension pressure sensor, temperature and humidity atmospheric pressure sensor, and the ZigBee wireless module equipped with the tablet terminal and computer terminal include a high-performance wireless microcontroller model JN5161A and a fully integrated front-end module model RFX2401C.

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