Tilt angle sensor for electric control of coal mining machine of coal mine

Abstract

The utility model discloses a tilt angle sensor for electric control of a coal mining machine in a coal mine, and particularly relates to the technical field of tilt angle sensors, which comprises a main body, communication interfaces of two different models are mounted on one side of the main body, a dial switch is mounted in the main body, a bubble level is mounted on one side of the dial switch, and a shell component is mounted on one side of the main body away from the main body. A circuit board is installed in the shell assembly, and a temperature and humidity detection sensor is arranged on the surface of the circuit board. According to the utility model, the bubble level and the gyroscope sensor are arranged on the sensor and are matched with the temperature and humidity detection sensor for use, and the temperature and humidity detection sensor in the sensor is matched to detect the numerical value between the data measured by the bubble level and the gyroscope sensor in real time and the preset normal state data range; compensation is correspondingly carried out based on preset normal state data, the measurement accuracy can be ensured, the accuracy and reliability of a measurement result can be ensured, and therefore rapid calibration can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of inclination sensors, and more specifically, to an inclination sensor for the electric control of a coal mining shearer in a coal mine. Background Art

[0002] In recent years, with the increasing demand for automatic coal cutting of shearers, the accuracy requirements for supporting measurement sensors of coal mining shearers underground in coal mines have also been increasing day by day. Among them, in order to accurately monitor and control the attitude and angle of shearers, inclination sensors are usually used.

[0003] Currently, inclination sensors on the market are usually installed in multiple parts such as the drum support frame, bogie, frame body, and electric control box of the shearer.

[0004] However, in actual use, the currently widely used inclination sensors based on MEMS technology, while controlling costs, face challenges of interference from environmental factors such as vibration, temperature, and electromagnetic pulses due to their usage environment, resulting in their accuracy being easily affected. In terms of software, hardware, and programs, despite existing efforts, most manufacturers still need to strengthen their performance in reducing these interferences and improving the stability of the sensors. Therefore, during long-term operation, the sensors are prone to offset drift phenomena, and thus need to be calibrated manually at regular intervals to ensure the persistence of their accuracy and guarantee the efficiency and stability of the automatic operation of the shearer. Summary of the Utility Model

[0005] The inclination sensor for the electric control of a coal mining shearer provided by the utility model aims to solve the following problems: The currently widely used inclination sensors based on MEMS technology, while controlling costs, usually face challenges of interference from environmental factors such as vibration, temperature, and electromagnetic pulses due to their usage environment, resulting in their accuracy being easily affected. In terms of software, hardware, and programs, despite existing efforts, most manufacturers still need to strengthen their performance in reducing these interferences and improving the stability of the sensors. In addition, the offset drift phenomenon that may occur during the long-term operation of the sensors also requires manual calibration at regular intervals to ensure the persistence of their accuracy, thereby guaranteeing the efficiency and stability of the automatic operation of the shearer.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An inclination sensor for the electric control of a coal mining shearer, comprising a main body, on one side of the main body are installed two different types of communication interfaces, inside the main body is installed a DIP switch, on one side of the DIP switch is installed a bubble level, and the bubble level is used to level and calibrate the shearer equipment. On the side of the main body facing away from the communication interfaces is installed a housing assembly, inside the housing assembly is installed a circuit board, and on the surface of the circuit board is a temperature and humidity detection sensor, which is used to monitor the temperature and humidity inside the sensor. A control body is also provided on the temperature and humidity detection sensor. The control body receives the temperature and humidity inside the sensor monitored by the temperature and humidity detection sensor, and based on the temperature and humidity real-time monitored inside the sensor, the control body compensates the measurement accuracy corresponding to the difference between the two and the temperature threshold and humidity threshold under normal conditions.

[0007] In a preferred embodiment, the housing assembly includes a rear housing, the rear housing is fixedly installed on the side of the main body facing away from the communication interfaces, the circuit board is fixedly installed inside the cavity of the rear housing, and a front housing is detachably installed on the surface of the rear housing, and the front housing is located on the side of the main body where the bubble level is located.

[0008] In a preferred embodiment, on the side of the front housing facing away from the circuit board is provided a gyroscope sensor, the gyroscope sensor is fixedly connected to the front housing, and the gyroscope sensor is used to measure the attitude and angle of the shearer and the height of the rocker arm.

[0009] In a preferred embodiment, on the side of the rear housing facing away from the front housing is provided an installation hole, and the installation hole is used to fixedly install the rear housing on the shearer.

[0010] In a preferred embodiment, there are also two measurement modes. The measurement range of measurement mode one is ±30°, and the measurement range of measurement mode two is ±90°. The methods for switching the measurement mode include method one and method two. Method one: The user remotely configures it through software according to actual needs; Method two: The user switches the measurement mode through the DIP switch inside the sensor according to actual needs.

[0011] In a preferred embodiment, the sensor housing is made of shock-absorbing material to reduce the noise caused by the vibration of the shearer. The sensor housing contains a vibration isolation device, and the vibration isolation device is installed inside the housing assembly, and the vibration isolation device is a rubber gasket or a spring.

[0012] The beneficial effects of the present utility model are as follows:

[0013] The utility model ensures the accuracy of measurement, the precision and reliability of the measurement results, and enables quick calibration by setting a bubble level and a gyroscope sensor on the sensor, cooperating with the use of a temperature and humidity detection sensor, and compensating the values between the real-time measurement data of the two and the preset normal state data range based on the preset normal state data. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic front view structure diagram of the utility model.

[0016] Figure 3 It is a schematic side view structure diagram of the utility model.

[0017] Figure 4 It is a schematic side sectional view structure diagram of the rear housing of the utility model.

[0018] Figure 5 It is a schematic rear view structure diagram of the utility model.

[0019] The reference numerals are: 1, rear housing; 11, main body; 12, circuit board; 2, front housing; 3, gyroscope sensor; 4, bubble level; 5, communication interface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further describes the present application in detail with reference to the drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Referring to the attached Figures 1-5 specification, an inclination sensor for the electric control of a coal mining shearer includes a main body 11. On one side of the main body 11, two different types of communication interfaces 5 are installed. Inside the main body 11, a DIP switch is installed. On one side of the DIP switch, a bubble level 4 is installed. The bubble level 4 is used to level and calibrate the shearer equipment. On the side of the main body 11 facing away from the communication interface 5, a housing assembly is installed. Inside the housing assembly, a circuit board 12 is installed. The surface of the circuit board 12 has a temperature and humidity detection sensor. The temperature and humidity detection sensor is used to monitor the temperature and humidity inside the sensor. A control body is also provided on the temperature and humidity detection sensor. The control body receives the temperature and humidity inside the sensor monitored by the temperature and humidity detection sensor, and based on the temperature and humidity monitored in real time inside the sensor, the control body compensates the measurement accuracy corresponding to the difference between the two and the temperature threshold and humidity threshold in the normal state.

[0022] It should be noted that the use state of this structure includes a single use state and a group use state, wherein the single use state is to use a single structure to be installed on a coal mining machine to monitor the posture and angle of the coal mining machine; the group use state is to use more than two structures to be installed on multiple parts of the coal mining machine, and collect the posture and angle information of the coal mining machine through remote configuration of software or through the combination of the dial switch inside the sensor, and use two communication interfaces 5 to connect different models of coal mining machines respectively, and the communication interface 5 model is RS485;

[0023] The temperature and humidity detection sensor monitors the temperature and humidity inside the sensor in real time. After the control subject receives the temperature and humidity data inside the sensor monitored by the temperature and humidity detection sensor, it will first compare the real-time monitored temperature and humidity data inside the sensor with the preset normal state data. When the real-time monitored humidity and temperature data deviate from the preset normal state data, the control subject will compensate for the deviation range value between the real-time monitored temperature and humidity data and the normal state data accordingly, thereby reducing the measurement error caused by temperature and humidity changes and ensuring the reliability of the measurement results.

[0024] By observing the flow direction of the bubbles on the bubble level 4 and simultaneously leveling and calibrating the coal mining machine, rapid calibration and zeroing can be achieved without additional operations on the well.

[0025] Furthermore, the shell assembly includes a main body 11 including a rear shell 1, the rear shell 1 is fixedly installed on the side of the main body 11 away from the communication interface 5, the circuit board 12 is fixedly installed in the inner cavity of the rear shell 1, and the front shell 2 is detachably installed on the surface of the rear shell 1, and the front shell 2 is located on the side of the main body 11 having the bubble level 4.

[0026] In the above embodiment, the temperature and humidity detection sensor is installed inside the sensor through the rear shell 1 and the front shell 2 to monitor the temperature and data inside the sensor in real time and resist the interference of temperature changes inside the sensor during measurement.

[0027] Furthermore, a gyro sensor 3 is provided on the side of the front housing 2 facing away from the circuit board 12. The gyro sensor 3 is fixedly connected to the front housing 2. The gyro sensor 3 is used to measure the posture and angle of the coal mining machine and the height of the rocker arm.

[0028] In the above embodiment, the sensor monitors the data in real time through the gyro sensor 3, inputs the data measured in real time by the gyro sensor 3 into the control computer, and the control computer outputs the posture, angle and height of the coal mining machine's rocker arm, thereby improving the measurement accuracy of the coal mining machine through real-time monitoring.

[0029] Further, a mounting hole is provided on the side of the rear housing 1 facing away from the front housing 2, and the mounting hole is used to fixedly mount the rear housing 1 on the coal mining machine.

[0030] In the above embodiment, the device is fixedly mounted on the coal mining machine through the mounting hole, avoiding the shaking of the rear housing 1 to ensure the accuracy and stability of the measurement data.

[0031] Further, there are also two measurement modes. The measurement range of measurement mode one is ±30°, and the measurement range of measurement mode two is ±90°. The methods for switching the measurement mode include method one and method two. Method one: The user remotely configures it through software according to actual needs; Method two: The user switches the measurement mode through the DIP switch inside the sensor according to actual needs.

[0032] In the above embodiment, the sensor supports two measurement modes of ±30° and ±90°, and the user can remotely configure it through software or switch the measurement mode through the DIP switch inside the sensor according to actual needs.

[0033] Further, the sensor housing is made of shock-absorbing material to reduce the noise caused by the vibration of the coal mining machine. The sensor housing contains a vibration isolation device, and the vibration isolation device is installed inside the housing assembly, where the vibration isolation device is a rubber gasket or a spring.

[0034] In the above embodiment, the sensor housing made of shock-absorbing material is combined with the vibration isolation device, making the sensor housing have the design effect of ultra-low noise density, enabling the sensor to resist external interferences such as vibration and temperature changes during the operation of the coal mining machine, and ensuring the accuracy and stability of the measurement data.

[0035] Working principle: When the device is in use, the user first fixedly mounts the sensor on the coal mining machine equipment through the mounting hole, then connects it to the coal mining machine equipment through the communication interface 5, and then can remotely configure it through software or switch the measurement mode through the DIP switch inside the sensor. After the connection is completed, by observing the data transmitted by the bubble level 4 and the monitoring gyroscope sensor 3 in real time, and at the same time cooperating with the temperature and humidity detection sensor inside the sensor to compare the real-time measured data with the preset normal state data range, and performing compensation based on the preset normal state data, so as to ensure the accuracy of the measurement. Among them, by observing the flow direction of the bubble on the bubble level 4 and simultaneously leveling and calibrating the coal mining machine equipment, rapid calibration and zeroing can be achieved. The sensor can monitor in real time through the gyroscope sensor 3. The data measured by the sensor from the gyroscope sensor 3 in real time is input into the control computer, and the control computer outputs the attitude, angle of the coal mining machine, and the height of the coal mining machine boom.

[0036] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. An inclination sensor for the electric control of a coal mining shearer, comprising a main body (11), characterized in that: On one side of the main body (11), two different types of communication interfaces (5) are installed. Inside the main body (11), a DIP switch is installed. On one side of the DIP switch, a bubble level (4) is installed. The bubble level (4) is used to level and calibrate the shearer. On the side of the main body (11) facing away from the communication interface (5), a housing assembly is installed. Inside the housing assembly, a circuit board (12) is installed. On the surface of the circuit board (12), there is a temperature and humidity detection sensor. The temperature and humidity detection sensor is used to monitor the temperature and humidity inside the sensor. A control body is also provided on the temperature and humidity detection sensor. The control body receives the temperature and humidity inside the sensor monitored by the temperature and humidity detection sensor, and based on the temperature and humidity real-time monitored inside the sensor, the control body compensates for the measurement accuracy corresponding to the difference between the two and the temperature threshold and humidity threshold in the normal state.

2. The inclination sensor for the electric control of a coal mining shearer according to claim 1, wherein: The housing assembly includes that the main body (11) includes a rear housing (1). The rear housing (1) is fixedly installed on the side of the main body (11) facing away from the communication interface (5). The circuit board (12) is fixedly installed in the inner cavity of the rear housing (1). On the surface of the rear housing (1), a front housing (2) is detachably installed. The front housing (2) is located on the side of the main body (11) where the bubble level (4) is provided.

3. The inclination sensor for the electric control of a coal mining shearer according to claim 2, characterized in that: On the side of the front housing (2) facing away from the circuit board (12), a gyroscope sensor (3) is provided. The gyroscope sensor (3) is fixedly connected to the front housing (2). The gyroscope sensor (3) is used to measure the attitude and angle of the shearer and the height of the rocker arm.

4. The inclination sensor for the electric control of a coal mining shearer according to claim 3, characterized in that: On the side of the rear housing (1) facing away from the front housing (2), a mounting hole is provided. The mounting hole is used to fixedly install the rear housing (1) on the shearer.

5. The inclination sensor for the electric control of a coal mining shearer according to claim 1, wherein: There are also two measurement modes. The measurement range of measurement mode one is ±30°, and the measurement range of measurement mode two is ±90°.

6. The dip angle sensor for the electric control of a coal mining shearer according to claim 2, characterized in that: The sensor housing is made of shock-absorbing material to reduce the noise caused by the vibration of the shearer. The sensor housing contains a vibration isolation device. The vibration isolation device is installed inside the housing assembly. Among them, the vibration isolation device is a rubber gasket or a spring.

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