CN218057172U - Fault early warning detection device for underground scraper conveyor of coal mine - Google Patents
Fault early warning detection device for underground scraper conveyor of coal mine Download PDFInfo
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- CN218057172U CN218057172U CN202221007688.2U CN202221007688U CN218057172U CN 218057172 U CN218057172 U CN 218057172U CN 202221007688 U CN202221007688 U CN 202221007688U CN 218057172 U CN218057172 U CN 218057172U
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- 238000001514 detection method Methods 0.000 title claims abstract description 73
- 239000003245 coal Substances 0.000 title claims abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 30
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- 230000033001 locomotion Effects 0.000 claims description 6
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- 238000004458 analytical method Methods 0.000 description 6
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- 238000005065 mining Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model provides a fault early warning detection device for a scraper conveyor under a coal mine, which comprises a scraper fault detection module, a driving piece fault detection module and a judgment module; the scraper fault detection module comprises at least one scraper state detector, the scraper state detector comprises at least one laser assembly, the laser assembly comprises a laser transmitter and a laser receiver, and the laser transmitter and the laser receiver are in one-to-one correspondence and are oppositely arranged on the shells at two sides of a scraper of the scraper conveyor; the driving part fault detection module is electrically connected with a speed reducer and a rotating motor of the scraper conveyor respectively, and the driving part fault detection module detects the running states of the speed reducer and the rotating motor respectively. The utility model discloses drive arrangement and scraper blade state to scraper conveyor carry out fault detection to guarantee scraper conveyor steady operation, have characteristics such as stability is good, the reliability is high and the flexibility is good.
Description
Technical Field
The utility model belongs to the technical field of coal mining, a colliery is scraper conveyor trouble early warning detection device in pit is related to.
Background
In the operation of mechanized coal mining, the scraper conveyor is one of core devices of mechanized coal mining of coal mines as a working face conveying device, and is matched with coal mining devices and supporting devices, so that the high-efficiency output of coal is realized. The scraper conveyer is dragged by a scraper chain, is a conveyer for conveying bulk materials in the groove, is connected with the hydraulic support through a pulling and moving mechanism, and moves along with the hydraulic support under the driving of the pulling and moving mechanism.
Because the operational reliability of the scraper conveyor directly influences the continuity and safety of coal mining on a working face, a corresponding monitoring system is generally configured for the scraper conveyor so as to find the problems of the scraper conveyor in the working process, the existing monitoring system for the scraper conveyor generally mainly focuses on the acquisition of various field state information and the judgment of alarming and stopping, the function is single, and after the alarming or stopping occurs, field personnel perform troubleshooting and repair and replace corresponding parts. For example, in practical application, a scraper conveyor is prone to faults such as chain jumping and scraper breakage, and if the faults cannot be found in time, the faults are enlarged, other parts of the scraper conveyor also break, so that the fault removing time is prolonged, and the normal production efficiency of a production system is seriously affected.
CN202542405U discloses a scraper conveyor fault detection device, which comprises a frame assembly, a signal processing device, two carrier rollers and two touch swing rods; the two carrier rollers are rotatably arranged on the frame assembly and can independently rotate around two corresponding horizontal rotation axes respectively, and the two horizontal rotation axes are positioned on the same horizontal straight line; the two touch swing rods are respectively and rigidly connected to the two carrier rollers in a vertical mode; under the non-working state, the two touch swing rods naturally droop under the action of gravity; in a working state, the two touch swing rods swing under the action of the scraper and can drive the corresponding carrier rollers to rotate around the respective corresponding rotation axes; the signal processing device comprises two sensors, and the two sensors are respectively used for detecting the rotation processes of the two carrier rollers to generate detection signals.
CN204346703U discloses a scraper conveyor reducer fault diagnosis device. The device comprises a piezoelectric acceleration sensor, a scraper conveyor speed reducer, a three-phase asynchronous motor, a data acquisition system and a computer; the two piezoelectric acceleration sensors are arranged on the end cover on the back side of the output shaft of the speed reducer and above the box body through magnet blocks, the piezoelectric acceleration sensors directly record vibration signals of the speed reducer and are connected with a data acquisition card in a data acquisition system, the data acquisition card is a PCI-1716 acquisition card and is provided with a 250kS/s and 16-bit A/D converter, and the acquisition card is also provided with 16 paths of single-ended analog quantity input and 8 paths of differential analog quantity input; the data acquisition card is connected with the computer, and the acquired vibration signals of the speed reducer are stored and displayed in the computer; the speed reducer is a two-stage transmission speed reducer, and the transmission gear is a helical bevel gear.
Therefore, how to provide a scraper conveyor fault early warning detection device avoids the occurrence of production accidents, and improves the maintenance efficiency, and the device becomes the technical problem which needs to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a colliery is scraper conveyor trouble early warning detection device in pit carries out fault detection to scraper conveyor's drive arrangement and scraper blade state to guarantee scraper conveyor steady operation, have characteristics such as stability is good, the reliability is high and the flexibility is good.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a colliery is scraper conveyor trouble early warning detection device in pit, colliery is scraper conveyor trouble early warning detection device in pit includes scraper blade fault detection module and driving piece fault detection module.
The scraper fault detection module comprises at least one scraper state detector, the scraper state detector comprises at least one laser assembly, the laser assembly comprises a laser transmitter and a laser receiver, and the laser transmitter and the laser receiver are in one-to-one correspondence and are oppositely arranged on the shells at two sides of a scraper of the scraper conveyor; the driving part fault detection module is electrically connected with a speed reducer and a rotating motor of the scraper conveyor respectively, and the driving part fault detection module detects the running states of the speed reducer and the rotating motor respectively.
The utility model discloses a set up scraper blade fault detection module, driving piece fault detection module and judgment module, carry out the fault early warning detection to scraper blade operating condition and the driving piece operating condition of scraper blade conveyer respectively, the multi-factor detects the effective operation of guaranteeing the scraper blade conveyer, and fault early warning in advance avoids the emergence of production accident, furtherly, the utility model discloses a set up laser subassembly, utilize laser emitter and laser receiver cooperation, detect the straightness accuracy of scraper blade, judge according to laser receiver signal off-time and scraper blade running speed, judge with single scraper blade off-time of predetermineeing, thereby detect the straightness accuracy condition of scraper blade, if the signal off-time that detects is greater than the settlement time, then explain the scraper blade and take place the slope, in addition, detect through the operational parameter to speed reducer and rotation motor, guarantee scraper blade conveyer's steady operation and fault early warning, through the testing condition, judge the fault location, realize quick maintenance.
As a preferred technical scheme of the utility model, scraper blade state detector includes two at least laser assembly, laser assembly arranges along scraper blade width direction is linear.
The utility model discloses a arrange laser assembly along scraper blade width direction linearity to judge through the time of each laser assembly turn-off signal, laser assembly turn-off signal's precedence order promptly judges whether the scraper blade has taken place the slope, and furtherly, through inclination and direction, inspects the chain of scraper blade and connection.
As a preferred technical scheme of the utility model, scraper blade state detector is provided with two at least along the direction of motion of scraper blade, scraper blade state detector interval sets up, be provided with the laser assembly that the position height is the same among the scraper blade state detector.
The utility model discloses a set up the scraper blade state detector that the interval set up, utilize adjacent and be located the laser subassembly of same height and receive the time interval of turn-off signal to and apart from the interval, detect the speed of scraper blade, further match the scraper blade functioning speed who sets for in the rotation motor and contrast, ensure actual functioning speed and set for the functioning speed unanimity.
As a preferred technical scheme of the utility model, scraper blade fault detection module still includes first data receiver, first data receiver is used for receiving laser signal off-time between corresponding laser emitter and the laser receiver among the laser subassembly.
As a preferred technical solution of the present invention, the scraper failure detection module further includes a second data receiver, the second data receiver is used for receiving signal interval time of the laser assembly with the same height at the position in the scraper state detector.
As a preferred technical scheme of the utility model, the judge module is the independent electric connection respectively first data receiver and second data receiver, the judge module receives respectively first data receiver and second data receiver's detected signal to the fault information of judgement scraper blade is judged in the feedback.
As a preferred technical scheme of the utility model, driving piece fault detection module is including setting up oil temperature sensor, oil level sensor and the bearing temperature sensor on the reduction gear.
As a preferred technical scheme of the utility model, driving piece fault detection module is still including setting up speed sensor and the power sensor on rotating the motor.
As a preferred technical scheme of the utility model, oil temperature sensor, oil level sensor, bearing temperature sensor, speedtransmitter and power sensor respectively with judge module electric connection, judge the module and receive oil temperature sensor, oil level sensor, bearing temperature sensor, speedtransmitter and power sensor's detected signal to the judgement sends the fault signal of speed reducer and the fault signal of rotating the motor respectively.
It should be noted that the utility model provides a judge the module and have data analysis throughput, when judging the trouble promptly, carry out data processing analysis with the signal that detects to judge the scraper blade inclination angle condition along the laser assembly of the linear arrangement of scraper blade width direction and handle the analysis, according to the off-time point of functioning speed, each laser assembly promptly, thereby calculate with the position condition of first disconnection signal point to last signal disconnection point department, carry out linear connection with each disconnection position, then judge the angle slope condition of scraper blade; taking the detection of the running speed by a scraper state detector arranged along the moving direction of the scraper as an example, the laser assemblies which are adjacent and positioned at the same height respectively record signal disconnection time points, and further, the running speed of the scraper is calculated through the time interval and the distance interval of the two laser assemblies.
As a preferred technical scheme of the utility model, colliery is scraper conveyor trouble early warning detection device in pit still includes follower and alarm, follower and alarm respectively with judge module electric connection, the follower output judge module's fault signal, the alarm basis fault signal that judge module sent sends out the malfunction alerting.
Exemplarily, a method for performing fault analysis on the fault early warning detection device of the underground coal mine scraper conveyor is provided, and the method specifically comprises the following steps:
the laser assembly respectively detects the signal disconnection time and disconnection and connection time points, and judges whether the scraper deflects in the horizontal plane direction by using the disconnection time condition of the same laser assembly, namely, if the disconnection time is equal to the preset disconnection time, the scraper does not deflect, and if the disconnection time is greater than the preset disconnection time, the scraper deflects; judging whether the scraper is inclined in the width direction or not by utilizing the disconnection time points of the laser assemblies distributed in the width direction of the scraper, namely judging whether the scraper is inclined in the width direction or not if the disconnection time points are consistent, if the disconnection time points are sequentially backwards extended from top to bottom, the upper end of the scraper is inclined towards the movement direction, and if the disconnection time points are sequentially backwards extended from bottom to top, the lower end of the scraper is inclined towards the movement direction;
the oil temperature sensor, the oil level sensor and the bearing temperature sensor respectively detect oil temperature parameters, oil level parameters and bearing temperature parameters of the speed reducer, whether the speed reducer needs to be cooled and supplemented with lubricating oil or not is judged, and if the detected working parameters deviate from set threshold values, a speed reducer fault alarm is sent out; the rotating speed sensor and the power sensor respectively detect rotating speed parameters and power parameters of the rotating motor, whether the rotating motor works abnormally is judged, and if the detected parameters deviate from a set threshold value, fault early warning of the rotating motor is sent out.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a set up scraper blade fault detection module, driving piece fault detection module and judgment module, carry out the fault early warning detection to scraper blade operating condition and the driving piece operating condition of scraper blade conveyer respectively, the multi-factor detects the effective operation of guaranteeing the scraper blade conveyer, and fault early warning in advance avoids the emergence of production accident, furtherly, the utility model discloses a set up laser subassembly, utilize laser emitter and laser receiver cooperation, detect the straightness accuracy of scraper blade, judge according to laser receiver signal off-time and scraper blade running speed, judge with single scraper blade off-time of predetermineeing, thereby detect the straightness accuracy condition of scraper blade, if the signal off-time that detects is greater than the settlement time, then explain the scraper blade and take place the slope, in addition, detect through the operational parameter to speed reducer and rotation motor, guarantee scraper blade conveyer's steady operation and fault early warning, through the testing condition, judge the fault location, realize quick maintenance.
Drawings
Fig. 1 is a schematic structural diagram of a fault early warning and detecting device for a scraper conveyor in a coal mine according to an embodiment of the present invention;
fig. 2 is a schematic top view of the arrangement of the laser modules according to an embodiment of the present invention;
fig. 3 is a schematic side view of the arrangement of the laser module according to an embodiment of the present invention.
1-a laser emitter; 2-a laser receiver; 3-scraping plate.
Detailed Description
It is to be understood that in the description of the present invention, the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly, and may for example be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
In a specific embodiment, the utility model provides a colliery is scraper conveyor trouble early warning detection device in pit, as shown in FIG. 1, colliery is scraper conveyor trouble early warning detection device in pit includes scraper blade trouble detection module and driving piece trouble detection module.
As shown in fig. 2, the scraper failure detection module includes at least one scraper state detector, the scraper state detector includes at least one laser component, the laser component includes a laser emitter 1 and a laser receiver 2, the laser emitter 1 and the laser receiver 2 are in one-to-one correspondence and are oppositely disposed on the housing at both sides of the scraper 3 conveyor; the driving part fault detection module is respectively and electrically connected with the speed reducer and the rotating motor of the scraper 3 conveyor, and the driving part fault detection module is respectively used for detecting the running states of the speed reducer and the rotating motor.
Specifically, as shown in fig. 3, the squeegee state detector includes at least two laser components that are linearly arranged in the width direction of the squeegee 3. The utility model discloses a arrange laser assembly along 3 width direction linearity of scraper blade to judge through the time of each laser assembly turn-off signal, laser assembly turn-off signal's precedence order promptly judges whether slope has taken place for scraper blade 3, and furtherly, through inclination and direction, inspects scraper blade 3 and the chain of connection.
Specifically, as shown in fig. 2 and 3, at least two squeegee state detectors are provided along the moving direction of the squeegee 3, the squeegee state detectors are provided at intervals, and laser assemblies having the same position height are provided in the squeegee state detectors. The utility model discloses a set up the scraper blade state detector that the interval set up, utilize adjacent and be located the laser subassembly of same height and receive the time interval of turn-off signal to and apart from the interval, detect scraper blade 3's speed, further match the 3 functioning speed of scraper blade of setting for in the rotation motor and contrast, ensure actual functioning speed and set for the functioning speed unanimity.
Specifically, the scraper fault detection module further comprises a first data receiver, and the first data receiver is used for receiving the laser signal disconnection time between the corresponding laser transmitter 1 and the corresponding laser receiver 2 in the laser assembly.
Specifically, the screed fault detection module further comprises a second data receiver for receiving signal interval times of laser assemblies with the same position height in adjacent screed state detectors.
Specifically, the judging module is electrically connected to the first data receiver and the second data receiver independently, and receives the detection signals of the first data receiver and the second data receiver, respectively, and feeds back the fault information of the judging scraper 3.
Specifically, the driving part fault detection module comprises an oil temperature sensor, an oil level sensor and a bearing temperature sensor which are arranged on the speed reducer.
Specifically, the driving member fault detection module further comprises a rotating speed sensor and a power sensor which are arranged on the rotating motor.
Specifically, the oil temperature sensor, the oil level sensor, the bearing temperature sensor, the rotating speed sensor and the power sensor are respectively and electrically connected with the judgment module, and the judgment module receives detection signals of the oil temperature sensor, the oil level sensor, the bearing temperature sensor, the rotating speed sensor and the power sensor and judges fault signals of the speed reducer and fault signals of the rotating motor.
Exemplarily, the utility model provides a judge the module and have data analysis throughput, when judging the trouble promptly, carry out data processing analysis with the signal that detects to judge the scraper blade 3 inclination condition to the laser assembly who arranges along the scraper blade 3 width direction is linear to be handled the analysis, promptly according to the operating speed, the disconnection time point of each laser assembly, thereby calculate with the position condition of first disconnection signal point to last signal disconnection point department, carry out linear connection with each disconnection position, then judge the angle slope condition of scraper blade 3; taking the detection of the running speed by the squeegee state detector provided along the moving direction of the squeegee 3 as an example, the laser modules adjacent to each other and located at the same height record the signal off time points, respectively, and further, the running speed of the squeegee 3 is calculated by the time interval and the distance interval of the two laser modules.
Specifically, colliery is scraper conveyor trouble early warning detection device in pit still includes follower and alarm, follower and alarm respectively with the judging module electric connection, the follower outputs the fault signal of judging module, the alarm is according to the fault signal that the judging module sent sends out the fault alarm.
Exemplarily, a method for performing fault analysis on the fault early warning detection device of the underground coal mine scraper conveyor is provided, and the method specifically comprises the following steps:
the laser assembly respectively detects the signal disconnection time and disconnection and connection time points, and judges whether the scraper 3 deflects in the horizontal plane direction by using the disconnection time condition of the same laser assembly, namely, if the disconnection time is equal to the preset disconnection time, the scraper does not deflect, and if the disconnection time is greater than the preset disconnection time, the scraper deflects; judging whether the scraper 3 inclines in the width direction or not by using the disconnection time points of the laser assemblies arranged in the width direction of the scraper 3, namely judging whether the disconnection time points are consistent or not, if the disconnection time points are sequentially backwards extended from top to bottom, the upper end of the scraper 3 inclines to the movement direction, and if the disconnection time points are sequentially backwards extended from bottom to top, the lower end of the scraper 3 inclines to the movement direction;
the oil temperature sensor, the oil level sensor and the bearing temperature sensor respectively detect oil temperature parameters, oil level parameters and bearing temperature parameters of the speed reducer, whether the speed reducer needs to be cooled and supplemented with lubricating oil or not is judged, and if the detected working parameters deviate from set thresholds, a speed reducer fault alarm is sent out; the rotating speed sensor and the power sensor respectively detect rotating speed parameters and power parameters of the rotating motor, whether the rotating motor works abnormally is judged, and if the detected parameters deviate from a set threshold value, fault early warning of the rotating motor is sent out.
Through a specific embodiment, the utility model discloses a set up scraper blade fault detection module, driving piece fault detection module and judge the module, carry out the fault early warning detection to scraper blade 3 operating condition and the driving piece operating condition of scraper blade 3 conveyer respectively, the effective operation of scraper blade 3 conveyer is guaranteed in the multifactor detection, the fault early warning in advance, avoid the emergence of production accident, furtherly, the utility model discloses a set up laser subassembly, utilize laser emitter 1 and laser receiver 2 cooperation, detect the straightness accuracy of scraper blade 3, judge according to laser receiver 2 signal off-time and scraper blade 3 functioning speed, judge with 3 off-time of predetermined single scraper blade to detect the straightness accuracy condition of scraper blade 3, if the signal off-time that detects is greater than the settlement time, then explain scraper blade 3 and take place the slope, in addition, through detecting the running parameter to speed reducer and rotation motor, guarantee the steady operation and the fault early warning of scraper blade 3 conveyer, through the detection condition, judge the fault location, realize quick maintenance.
The applicant states that the above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceived by those skilled in the art within the technical scope of the present invention are all within the protection scope and the disclosure scope of the present invention.
Claims (10)
1. The fault early warning detection device for the underground coal mine scraper conveyor is characterized by comprising a scraper fault detection module, a driving piece fault detection module and a judgment module;
the scraper fault detection module comprises at least one scraper state detector, the scraper state detector comprises at least one laser assembly, the laser assembly comprises a laser transmitter and a laser receiver, the laser transmitter and the laser receiver are in one-to-one correspondence and are oppositely arranged on the shells on two sides of a scraper of the scraper conveyor, and the judgment module receives disconnection time signals of the laser transmitter and the laser receiver in the laser assembly and feeds back, judges and sends out fault signals;
the driving piece fault detection module is electrically connected with a speed reducer and a rotating motor of the scraper conveyor respectively, the driving piece fault detection module detects the running states of the speed reducer and the rotating motor respectively, and the judgment module receives the running state signals of the speed reducer and the rotating motor and feeds back the running state signals to judge and send fault signals.
2. The coal mine underground scraper conveyor fault early warning detection device of claim 1, wherein the scraper state detector comprises at least two laser assemblies, and the laser assemblies are linearly arranged along the width direction of the scraper.
3. The fault early warning detection device for the underground scraper conveyor of the coal mine according to claim 1, wherein at least two scraper state detectors are arranged along the movement direction of the scraper, the scraper state detectors are arranged at intervals, and laser assemblies with the same position and height are arranged in the scraper state detectors.
4. The coal mine underground scraper conveyor fault early warning detection device of claim 3, wherein the scraper fault detection module further comprises a first data receiver, and the first data receiver is used for receiving laser signal disconnection time between a corresponding laser transmitter and a corresponding laser receiver in the laser assembly.
5. The coal mine underground scraper conveyor fault early warning detection device of claim 4, wherein the scraper fault detection module further comprises a second data receiver, and the second data receiver is used for receiving signal interval time of laser assemblies with the same position height in the adjacent scraper state detectors.
6. The coal mine underground scraper conveyor fault early warning detection device as claimed in claim 5, wherein the judgment module is respectively and independently electrically connected with the first data receiver and the second data receiver, and receives detection signals of the first data receiver and the second data receiver respectively and feeds back fault information of the judgment scraper.
7. The fault early warning and detecting device for the underground scraper conveyor of the coal mine as claimed in claim 1, wherein the driving member fault detecting module comprises an oil temperature sensor, an oil level sensor and a bearing temperature sensor which are arranged on a speed reducer.
8. The coal mine underground scraper conveyor fault early warning detection device as claimed in claim 7, wherein the driving member fault detection module further comprises a rotation speed sensor and a power sensor which are arranged on the rotating motor.
9. The fault early warning and detecting device for the underground scraper conveyor of the coal mine as claimed in claim 8, wherein the oil temperature sensor, the oil level sensor, the bearing temperature sensor, the rotating speed sensor and the power sensor are respectively and electrically connected with a judging module, and the judging module receives detection signals of the oil temperature sensor, the oil level sensor, the bearing temperature sensor, the rotating speed sensor and the power sensor and judges fault signals of a speed reducer and a rotating motor which are respectively sent out.
10. The underground coal mine scraper conveyor fault early warning and detecting device according to claim 1, further comprising an output device and an alarm, wherein the output device and the alarm are respectively electrically connected with the judging module, the output device outputs a fault signal of the judging module, and the alarm gives out a fault alarm according to the fault signal sent by the judging module.
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| CN202221007688.2U CN218057172U (en) | 2022-04-27 | 2022-04-27 | Fault early warning detection device for underground scraper conveyor of coal mine |
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| CN202221007688.2U CN218057172U (en) | 2022-04-27 | 2022-04-27 | Fault early warning detection device for underground scraper conveyor of coal mine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117864703A (en) * | 2024-01-18 | 2024-04-12 | 山东科技大学 | Device, method and system for integrally monitoring physical and chemical characteristic parameters of scraper conveyor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117864703A (en) * | 2024-01-18 | 2024-04-12 | 山东科技大学 | Device, method and system for integrally monitoring physical and chemical characteristic parameters of scraper conveyor |
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