AU2018427246A1 - Tail rope monitoring device of mine hoisting system - Google Patents
Tail rope monitoring device of mine hoisting system Download PDFInfo
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- AU2018427246A1 AU2018427246A1 AU2018427246A AU2018427246A AU2018427246A1 AU 2018427246 A1 AU2018427246 A1 AU 2018427246A1 AU 2018427246 A AU2018427246 A AU 2018427246A AU 2018427246 A AU2018427246 A AU 2018427246A AU 2018427246 A1 AU2018427246 A1 AU 2018427246A1
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- tail rope
- suspension rod
- monitoring
- component
- sensed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
Abstract
Disclosed is a device for monitoring a tail rope of a mine hoisting system. The device comprises an upper suspension rod, a lower suspension rod, a processing component, and at least two sensors, wherein the at least two sensors are connected to the processing component; the at least two sensors are peripherally spaced at a preset angle, and fixed to the upper suspension rod, with sensing heads facing the lower suspension rod; the lower suspension rod is used to hang a tail rope and rotatably connected to the upper suspension rod.
Description
TAIL ROPE MONITORING DEVICE OF MINE HOISTING SYSTEM
CROSS REFERENCE TO RELATED APPLICATION
The present application is proposed based on Chinese Patent Application No. 201810672903.2 filed on June 26, 2018, and claims priority to the Chinese Patent Application, which is incorporated herein by reference in its entirety.
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to a mine hoisting system, and in particular, to a device for monitoring a tail rope of a mine hoisting system.
Description of Related Art
A tail rope is an important part of a mine hoisting system, such as a multi-rope friction wheel hoisting system of a coal mine shaft. Two ends of the tail end are respectively connected to the bottoms of two hoisting containers such as an auxiliary shaft cage or a main shaft skip, and the tail end is suspended below the two hoisting containers to form an annular operating system consisting of a hoisting rope, a hoisting container, a tail rope, a hoisting container and a hoisting rope. The tail rope plays a balancing effect in the hoisting system. The tail rope is rotated to release the stress when the hoisting containers are raised or lowered. However, in actual use, the tail rope often is hindered in rotation or damaged, which affects the operation of the hoisting system.
SUMMARY OF THE INVENTION
Technical Problem fn view of the above, embodiments of the present invention are intended to provide a device for monitoring a tail rope of a mine hoisting system, which can monitor the working state of a tail rope in real time.
Technical Solution
To achieve the foregoing objective, the technical solution of the present invention is implemented as follows:
An embodiment of the present invention provides a device for monitoring a tail rope of a mine hoisting system, comprising an upper suspension rod, a lower suspension rod, a processing component, and at least two sensors, wherein the at least two sensors are connected to the processing component; the at least two sensors are peripherally spaced at a preset angle, and fixed to the upper suspension rod, with sensing heads facing towards the lower suspension rod; and the lower suspension rod is configured to hang a tail rope and rotatably connected to the upper suspension rod;
each of the at least two sensors transmits a first signal to the processing component when a component to be sensed of the lower suspension rod is sensed for the first time;
each of the at least two sensors transmits a second signal to the processing component when the component to be sensed of the lower suspension rod is sensed for the second time; and the processing component calculates rotation data of the tail rope based on a position of each of the at least two sensors, a time point at which the component to be sensed of the lower suspension rod is sensed by each of the at least two sensors for the first time, and a time point at which the component to be sensed of the lower suspension rod is sensed by each of the at least two sensors for the second time, wherein the first sensing and the second sensing are adjacent or non-adjacent sensing.
in the foregoing solution, the component to be sensed is at a preset distance from the sensor, and there is one or more components to be sensed.
in the foregoing solution, the lower suspension rod is connected to the upper suspension rod via a connecting sleeve; an upper end of the connecting sleeve is rotatably connected to the upper suspension rod, and a lower end of the connecting sleeve is fixed to an upper end of the lower suspension rod.
In the foregoing solution, at least one rolling bearing is disposed in an inner cavity of the connecting sleeve; the rolling bearing comprises an inner ring fixed to a lower end of the upper suspension rod and an outer ring rotating relative to the inner ring; and the outer ring is fixed to the inner cavity of the connecting sleeve.
In the foregoing solution, the device for monitoring the tail rope is further provided with a monitoring component mounting bracket; the monitoring component mounting bracket is annular with an upper end fixed to the upper suspension rod and a lower end sleeved on the connecting sleeve; and the sensor is disposed on the lower end of the monitoring component mounting bracket.
In the foregoing solution, the sensor is a Hall sensor, and the component to be sensed comprises a magnetic element that can be sensed by the Hall sensor; and the component to be sensed is disposed on the connecting sleeve.
In the foregoing solution, the device for monitoring the tail rope is further provided with a signal acquisition component; one end of the signal acquisition component is connected to the sensor, and the other end of the signal acquisition component is connected to the processing component; and the signal acquisition component acquires a sensing signal of the sensor to be transmitted to the processing component.
In the foregoing solution, the processing component is further provided with a memory and a display; the memory is configured to store the sensing signal received by the processing component and data processed by the processing component, and the display is configured to display the data processed by the processing component.
In the foregoing solution, the device for monitoring a tail rope is further provided with a wireless transmitter and a wireless receiver; the wireless transmitter is connected to the signal acquisition component, and the wireless receiver is connected to the processing component; the wireless transmitter is configured to transmit the sensing signal acquired by the signal acquisition component, and the wireless receiver is configured to receive the sensing signal and transfer same to the processing component.
In the foregoing solution, the signal acquisition component is a single chip microcomputer, and the processing component is an industrial computer.
Advantageous Effect
The device for monitoring the tail rope of the mine hoisting system provided in the embodiment of the present invention includes an upper suspension rod, a lower suspension rod, a processing component, and at least two sensors, wherein the at least two sensors are connected to the processing component; the at least two sensors are peripherally spaced at a preset angle, and fixed to the upper suspension rod, with sensing heads facing towards the lower suspension rod; and the lower suspension rod is configured to hang a tail rope and rotatably connected to the upper suspension rod. In this way, the device for monitoring the tail rope of the mine hoisting system provided in the embodiment of the present invention can monitor the working state of the tail rope in real time, so that the mine hoisting system is controlled or adjusted based on the working state of the tail rope, and thus is safer.
Other advantageous effects of the embodiments of the present invention will be further described in the Detailed Description with reference to specific technical solutions.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic diagram showing transmission of a monitoring signal in a device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a tail rope suspension device in a device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention;
FIG. 3 is a left view of FIG. 2;
FIG. 4 is a schematic diagram of a monitoring component mounting bracket in a device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention;
FIG. 5 is a schematic diagram showing a device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention when used in the mine hoisting system;
FIG. 6 is a schematic diagram showing communication of a wireless transmitter and a wireless receiver in a device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention; and
FIG. 7 is a schematic flowchart of a device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention provides a device for monitoring a tail rope of a mine hoisting system, comprising an upper suspension rod, a lower suspension rod, a processing component, and at least two sensors, wherein the at least two sensors are connected to the processing component; the at least two sensors are peripherally spaced at a preset angle, and fixed to the upper suspension rod, with sensing heads facing towards the lower suspension rod; and the lower suspension rod is configured to hang a tail rope and rotatably connected to the upper suspension rod;
each of the at least two sensors transmits a first signal to the processing component when a component to be sensed of the lower suspension rod is sensed for the first time;
each of the at least two sensors transmits a second signal to the processing component when the component to be sensed of the lower suspension rod is sensed for the second time; and the processing component calculates rotation data of the tail rope based on a position of each of the at least two sensors, a time point at which the component to be sensed of the lower suspension rod is sensed by each of the at least two sensors for the first time, and a time point at which the component to be sensed of the lower suspension rod is sensed by each of the at least two sensors for the second time, wherein the first sensing and the second sensing are adjacent or non-adjacent sensing. The word “adjacent” can be understood as the number of turn adjacent to the number of turn detected for the first time, and correspondingly, the word “non-adjacent” is the number of turn not adjacent to the number of turn detected for the first time, wherein the number of turn detected for the first time can be any number of turn. For example, if during the monitoring process, the tail rope is turned 10 times, then the sensing of the second turn can be used as the first sensing, and the sensing of the third turn as the second sensing; or the sensing of the first turn can be used as the first sensing, and the sensing of the fifth turn as the second sensing.
The device for monitoring the tail rope of the mine hoisting system according to the embodiment of the present invention can monitor the working state of the tail rope in real time, so that the mine hoisting system is controlled or adjusted based on the working state of the tail rope, and thus is safer.
It should be noted that in the description of the embodiments of the present invention, unless otherwise stated and limited, the term connected shall be understood in a broad sense, and for example, it may be comprehended as being electrically connected, in an internal communication between two elements, directly connected, or indirectly connected via an intermediate medium. Specific meaning about the term may be understood by a person of ordinary skill in the art according to specific circumstances.
It should be noted that the terms first/second/third involved in the embodiments of the present invention are only intended to distinguish similar objects, rather than representing the particular order of the objects. It should be understood that the particular sequence or precedence order of the terms first/second/third can be interchanged if allowed. It should be understood that the objects distinguished by the terms first\second\third can be interchanged where appropriate, so that the embodiments of the present invention described herein can be carried out in a sequence other than those illustrated or described herein.
In the embodiments of the present invention, except the processing component that can be disposed at a working site of the mine hoisting system or in a machine room away from the mine hoisting system, other components in the device for monitoring the tail rope need to be hung below a hoisting container of the mine hoisting system and connected to each other, and therefore can be collectively referred to as a tail rope suspension device, that is, the upper and lower suspension rods are part of the tail rope suspension device. It can be understood that in some embodiments of the present invention, the processing component may be directly mounted on the tail rope suspension device.
In the embodiments of the present invention, the rotation data of the tail rope includes rotation speed, rotation acceleration, rotation direction, rotation acceleration time, rotation deceleration time, tail rope rotation start position, and tail rope rotation stop position, wherein the rotation direction includes the clockwise direction and the counterclockwise direction; the connection of the sensor to the processing component may be a wired connection or a wireless connection, preferably a wireless connection, because the processing component is generally disposed in the machine room away from the working site.
Further, the working start time, the working stop time, etc. of the mine hoisting system can be obtained from the rotation data of the tail rope. Whether the working state of the tail rope is normal can be inferred from the rotation data of the tail rope, and then the mine hoisting system is controlled or adjusted based on the working state of the tail rope. Control or adjustment of the mine hoisting system may be carried out by a control device of the mine hoisting system, and may also be independently set by the device for monitoring the tail rope of the embodiment of the present invention, and preferably is carried out by the control device of the mine hoisting system.
As an implementation mode, the component to be sensed is at a preset distance from the sensor, and there is one or more components to be sensed. The more the components to be sensed are set, the more accurate the rotation data of the tail rope is, and it is easier to know the rotation start position of the tail rope and the rotation stop position of the tail rope, namely, from the start of rotation to the stop of rotation. The tail rope does not rotate in an integer number of turns. The preset distance may be set according to the acquisition distance of the sensor.
As an implementation mode, the lower suspension rod may be connected to the upper suspension rod via a connecting sleeve; an upper end of the connecting sleeve is rotatably connected to the upper suspension rod, and a lower end of the connecting sleeve is fixed to an upper end of the lower suspension rod.
As an implementation mode, at least one rolling bearing is disposed in an inner cavity of the connecting sleeve; the rolling bearing includes an inner ring fixed to a lower end of the upper suspension rod and an outer ring rotating relative to the inner ring; and the outer ring is fixed to the inner cavity of the connecting sleeve. Connecting the upper suspension rod to the lower suspension rod via the connecting sleeve contributes to simplify the complexity of parts, making the processing easier, and it is only necessary to replace some parts if damaged, rather than replacing all the parts. It can be understood that the upper suspension rod and the lower suspension rod may also be directly connected, that is, the connecting sleeve may be integrally formed on the lower suspension rod.
As an implementation mode, the device for monitoring the tail rope is further provided with a monitoring component mounting bracket; the monitoring component mounting bracket is annular with an upper end fixed to the upper suspension rod and a lower end sleeved on the connecting sleeve; and the sensor is disposed on the lower end of the monitoring component mounting bracket. The purpose of disposing the monitoring component mounting bracket is to facilitate mounting the sensor.
As an implementation mode, the sensor may be a Hall sensor; the component to be sensed includes a magnetic element that can be sensed by the Hall sensor, and the magnetic element may be a permanent magnet block; when the lower suspension rod is connected to the upper suspension rod via the connecting sleeve, the component to be sensed may be disposed on the connecting sleeve or may also be fixed to the lower suspension rod, so long as the component to be sensed can rotate with the rotation of the lower suspension rod. Compared with an optical sensor, the Hall sensor is less susceptible to contamination and is more stable.
As an implementation mode, the device for monitoring the tail rope is further provided with a signal acquisition component; one end of the signal acquisition component is connected to the sensor, and the other end of the signal acquisition component is connected to the processing component; and the signal acquisition component acquires a sensing signal of the sensor to be transmitted to the processing component. The sensing signal is the first signal or second signal. In this way, the sensing signal of the sensor can be obtained and analyzed. The connection between the signal acquisition component and the sensor can be a wired connection, or a wireless connection, preferably a wired connection, because the signal acquisition component is generally disposed at the working site, the wired connection is more reliable and simple. The connection between the signal acquisition component and the processing component can be a wired connection, or a wireless connection, preferably a wireless connection, because the processing component is generally disposed in a machine room away from working site. It can be understood that the signal acquisition component and the processing component may be integrated together when the processing component is directly disposed on the tail rope suspension device, that is, when the processing component is disposed at the working site of the mine hoisting system.
As an implementation mode, the processing component is further provided with a memory and a display; the memory is configured to store the sensing signal received by the processing component and data processed by the processing component, and the display is configured to display the data processed by the processing component. The rotation data stored in the memory may be consulted or further analyzed as needed, and the display may display the rotation data more intuitively. The display may also be configured to display in real time the information sent by the signal acquisition component, i.e., the rotation of the tail rope.
As an implementation mode, the device for monitoring the tail rope is further provided with a wireless transmitter and a wireless receiver. The wireless transmitter is connected to the signal acquisition component, and the wireless receiver is connected to the processing component. The connection of the wireless transmitter and the signal acquisition component is a wired connection, because the wireless transmitter and the signal acquisition component are generally disposed at the same place, and similarly, the connection of the wireless receiver and the processing component is also a wired connection. The wireless transmitter is configured to transmit the sensing signal acquired by the signal acquisition component, and the wireless receiver is configured to receive the sensing signal and transfer same to the processing component. In this way, the processing component needs not to be placed on site, for example may be placed in an office located a few kilometers away from the site, so that the processing component is well protected. More specifically, the wireless transmitter and the wireless receiver may communicate with each other via digital microwaves.
As an implementation mode, the signal acquisition component may be a single chip microcomputer, and the processing component may be an industrial computer. More specifically, the single chip microcomputer may be a Micro Controller Unit (MCU), and the single chip microcomputer performs preliminary processing after acquiring the sensing signal of the sensor, and the processed signal is sent to the processing component. The single chip microcomputer is widely used and convenient in programming, and the industrial computer is stable in the performance.
The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
FIG. 1 is a schematic diagram showing transmission of a monitoring signal in a device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention. As shown in FIG. 1, the process of transferring the monitoring signal in the device for monitoring the tail rope of the mine hoisting system is that: the monitoring signal is sequentially transferred to the Hall sensor, the MCU, a wireless transmitting module, a wireless receiving module, and the industrial computer.
The Hall sensor is configured to monitor the rotation condition of the tail rope, such as whether the tail rope rotates, what is the rotation speed, etc. There are two Hall sensors, i.e., a Hall sensor 1 and a Hall sensor II. In this way, the MCU can obtain whether the tail rope rotates clockwise or counterclockwise via the sensing signals of the two Hall sensors. Correspondingly, there are two or more magnetic elements as the components to be sensed. In this way, in addition to the rotation turns of the tail rope, it can accurate to a half turn or an angle less than a half turn.
The MCU is configured to acquire a pulse signal output by the Hall sensor, and preliminarily process the pulse signal and then forward to the industrial computer. The Hall sensor outputs a pulse signal to the MCU when the tail rope rotates. The preliminary processing may include determining a working start time or stop time of the mine hoisting system, that is, determining that the mine hoisting system starts to work or stops when the tail rope starts to rotate or stops rotating, and may also include monitoring the rotation state of the tail rope, the rotation state of the tail rope including whether to rotate, the rotation direction, etc.
The wireless transmitter is configured to modulate a signal sent by the MCU to the industrial computer into a wireless signal for transmission.
The wireless receiver is configured to receive the wireless signal, and demodulate the signal sent by the MCU to the industrial computer, and transfer the same to the industrial computer.
The industrial computer is configured to process the signal from the MCU. The processing may include: based on the preliminary processing of the MCU, further determining the working start time or stop time of the mine hoisting system, the rotation state and rotation direction of the tail rope, the rotation speed of the tail rope, the rotation acceleration of the tail rope, etc.; and on this basis, drawing a tail rope rotation curve, making a tail rope rotation simulated animation, etc., and determining the working state of the tail rope, see the description below for details.
After obtaining the working state of the tail rope, the industrial computer further sends the working state to the control device of the mine hoisting system to facilitate controlling or adjusting the mine hoisting system.
In addition, the device for monitoring the tail rope of the mine hoisting system further includes a high-energy battery; the high-energy battery is configured to power the Hall sensor, the MCU, and the wireless transmitter, because the three components are disposed at the working site away from the machine room, and have no electric supply.
The industrial computer is installed with monitoring, diagnosis and analysis software. The monitoring, diagnosis and analysis software can process the data sent by the MCU, and can also realize data browsing, tail rope rotation curve drawing, tail rope rotation simulated animation, historical data query, fault diagnosis and alarm, and other functions, as described below.
(1) Tail rope rotation curve drawing
A chart can be drawn according to the rotation data. The abscissa of the chart is the system time, and the ordinate indicates the number of rotations. The clockwise rotation is the positive direction by default, and the counterclockwise rotation is the negative direction. The hoisting start time and end time are divided by a vertical red line on the time axis. The judgment is based on the fact that the tail rope stops rotating when the mine hoisting system is stationary. In this case, the signal output by the Hall sensor does not change for a long time, that is, does not change within the set time duration. After the mine hoisting system starts to operate, the tail rope starts to rotate, and the Hall sensor outputs a pulse signal. A signal period is reduced at the time corresponding to the change of the signal, and the mine hoisting system starts to operate by default. The tail rope is stationary after the hoisting is finished, in this case, the time duration of a signal period is increased at the time corresponding to the last change of the signal, and it is considered that the time is the hoisting stop time and is marked with a vertical red line.
(2) Tail rope rotation simulated animation
A simulated animation of the tail rope suspension device is displayed in the middle of a monitoring interface, and the rotation of the tail rope suspension device during the operation of the mine hoisting system can be simulated with an animation.
(3) Tail rope rotation stop alarm
If the signal output by the Hall sensor stops changing and the hoisting end time is not reached, it is considered that at this time, the tail rope stops rotating or the rotation angle is too small, and in this case, a first-level alarm is issued, and a rotation stop indicator turns red. If the hoisting end time is not reached after the specified time and the signal does not change, it is considered that the tail rope suspension device has failed. In this case, a second-level alarm is issued, and the rotation stop indicator starts to flash and a continuous alarm is sounded.
(4) Tail rope rotation data abnormality alarm
The tail rope rotation stop fault is a gradual fault. The tail rope rotation curves obtained by each operation of the mine hoisting system are compared, and the curve monitored for the first hoisting is considered to be an initial curve. If the monitored rotation curve is significantly different from the initial curve, it is considered that the health degree of the tail rope suspension device is reduced. If the difference between the monitored rotation curve and the initial curve is greater than 30%, a tail rope rotation abnormality indicator turns red and an alarm is issued.
(5) Alarm record query
The monitoring, diagnosis and analysis software automatically records the alarm information into an alarm database each time the foregoing alarm occurs. The Alarm Record button on the right side of the monitoring, diagnosis and analysis software may be clicked on to view the alarm database.
The industrial computer is further configured to detect the electric quantity of the high-energy battery. A power indicator turns red when the electric quantity of the high-energy battery is less than 5%, and a continuous alarm is issued.
FIG. 2 is a schematic diagram of a tail rope suspension device in a device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention. FIG. 3 is a left view of FIG. 2. As shown in FIGs. 2 and 3, the tail rope suspension device includes an axis pin 1, a connecting fork 2, an upper suspension rod 3, a monitoring component mounting bracket 4, a connecting sleeve 5, a radial ball bearing 6, a thrust ball bearing 7, a seal ring 8, a lower suspension rod 9, and a sensor 11.
The upper suspension rod 3 is used to connect a hoisting container, and specifically, is fixed to the hoisting container via the axis pin 1 and the connecting fork 2. The upper suspension rod 3 is fixed by the connecting fork 2 via bolts and nuts, the connecting fork 2 is fixed by the axis pin 1 via bolts and nuts, and the axis pin 1 is fixed to the hoisting container.
The connecting sleeve 5 is used to connect the upper suspension rod 3 and the lower suspension rod 9. An inner cavity of the connecting sleeve 5 is provided with the radial ball bearing 6 at an upper end and the thrust ball bearing 7 at a lower end. A lower end of the upper suspension rod 3 penetrates into the inner cavity of the connecting sleeve 5, and is assembled with the radial ball bearing 6 and the thrust ball bearing 7, that is, an external bearing gear of the upper suspension rod 3 matches inner rings of the radial ball bearing 6 and the thrust ball bearing 7. After the assembly, the connecting sleeve 5 can be rotated about the axis of the upper suspension rod 3 relative to the upper suspension rod 3.
The lower suspension rod 9 is used to hang the tail rope. The lower suspension rod 9 is fixed to the connecting sleeve 5 via bolts and nuts, and can rotate along with the connecting sleeve 5. One end of the seal ring 8 is fixed to the connecting sleeve 5, and the other end of the seal ring 8 is fixed to the lower suspension rod 9 and sleeved at the lower end of the upper suspension rod 3 to protect the thrust ball bearing 7 from dust and enable good lubrication of the thrust ball bearing 7.
The sensor 11 is used to monitor the rotation of the lower suspension rod 9. The sensor 11 is fixed to the monitoring component mounting bracket 4. A lower end of the monitoring component mounting bracket 4 is sleeved on the connecting sleeve 5. A sensing head of the sensor 11 is fixed to an inner wall of the monitoring component mounting frame 4, with the sensing direction being aligned with an outer wall of the connecting sleeve 5.
The sensor 11 is specifically a Hall sensor, and the connecting sleeve 5 is provided with a magnetic element matching the Hall sensor. In this embodiment, a permanent magnet block is disposed on a bolt fixed to the connecting sleeve 5. The number of the sensor 11 may be two. In addition to monitoring whether the lower suspension rod 9 is rotated, the sensors 11 also monitor whether the lower suspension rod 9 is rotated clockwise or counterclockwise. The number of the permanent magnet block may be two or more. In this way, the rotation angle of the lower suspension rod 9 can be accurately obtained, because during the monitoring, the lower suspension rod 9 does not always rotate for an integer of turns.
FfG. 4 is a schematic diagram of a monitoring component mounting bracket in a device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention. As shown in FfG. 4, the monitoring component mounting bracket includes a mounting bracket body 10. The mounting bracket body 10 is mounted with a sensor 11. The sensor 11 includes a sensor A and a sensor B. To facilitate installation to the upper suspension rod, the mounting bracket body 10 includes upper and lower blocks. The upper block of the mounting bracket body 10 is mounted with an MCU 13, a wireless transmitter 14, and a power supply 12. For use in a coal mine or the like, the power supply 12 is an intrinsically safe power supply. The lower block of the mounting bracket body 10 may be sleeved on the connecting sleeve 5 for mounting the sensor 11 thereon.
The wireless transmitter 14 is used to transmit a sensing signal of the sensor 11 acquired by the MCU 13. For the sake of transmission stability, the wireless transmitter 14 transmits signals via digital microwave communication, and adopts an anti-interference technique such as high-speed frequency hopping and forward error correction.
FfG. 5 is a schematic diagram showing a device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention when used in the mine hoisting system. As shown in FIG. 5, the mine hoisting system includes an upper sheave wheel, a lower sheave wheel, a drum, a hoisting container A, and a hoisting container B. The tail rope suspension device 15 and the monitoring component mounting bracket 16 of the device for monitoring the tail rope are located below the hoisting container A, and the wireless receiver 17 and the industrial computer 18 are located on the ground near the mine, generally in a machine room.
Here, the tail rope suspension device 15 may be the tail rope suspension device shown in FIGs. 2 and 3, and the monitoring component mounting bracket 16 may be the monitoring component mounting bracket 4 shown in FIGs. 2 and 3.
The device for monitoring the tail rope is configured to monitor the rotation of the tail rope when the mine hoisting system operates, to avoid accumulation of stress after the tail rope is hindered in rotation or damaged, which affects the operation of the mine hoisting system.
FIG. 6 is a schematic diagram showing frequency hopping of wireless transmission in device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention. As shown in FfG. 6, baseband modulation, generally Frequency-Shift Keying (FSK) modulation is performed on an input signal at a transmitting end, i.e., a wireless transmitter end, and then the modulated signal is mixed or frequency-converted with a local oscillator signal generated by a frequency synthesizer under the control of a Pseudorandom Noise (PN) code to obtain a pseudorandom hopping radio-frequency signal. The local oscillator signal is a radio-frequency carrier signal and is obtained by inputting the PN code into the frequency synthesizer for variable frequency synthesis. A local frequency synthesizer is controlled by the same PN code as the transmitting end at a receiving end, i.e., a wireless receiver end, and the received signal is mixed with a signal of the local frequency synthesizer to obtain a baseband modulated signal, and then baseband demodulation is performed to restore the signal, ft can be seen from the principle that the frequency hopping communication is instantaneous narrow-band communication. The bandwidth of the occupied channel is very narrow during the dwell time of each frequency. However, since the rate of frequency hopping is relatively high, the frequency hopping system is also a broadband system from a macroscopic perspective, that is, the spectrum is spread. By setting the frequency modulation, the anti-interference capability of the wireless signal transmission is greatly improved.
FIG. 7 is a schematic flowchart of a device for monitoring a tail rope of a mine hoisting system according to an embodiment of the present invention. As shown in FIG. 7, the working process includes the following steps:
Step 701: reading of a pulse signal.
The MCU reads the pulse signal from two Hall sensors, i.e., a sensing signal of the tail rope rotation.
Step 702: reading of a preset processing program.
The MCU reads a built-in preset processing program, and performs preliminary processing, i.e., step 703 and step 704, on the pulse signal obtained from the Hall sensor.
Step 703: determination of the hoisting start time.
The MCU determines, based on the preliminary processing, the working start time of the mine hoisting system.
Step 704: monitoring of the rotation state of a tail rope.
The MCU determines, based on the preliminary processing, the rotation state of the tail rope, specifically including whether to rotate, the rotate direction, etc.
Step 705: monitoring, diagnosis and analysis.
The industrial computer processes the signals from the MCU. The industrial computer is installed with monitoring, diagnosis and analysis software, and can realize data browsing, tail rope rotation curve drawing, tail rope rotation simulated animation, historical data query, fault diagnosis and alarm, and other functions.
The above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Industrial applicability
The device for monitoring the tail rope of the mine hoisting system according to the embodiment of the present invention can monitor the working state of a tail rope in real time, so that the mine hoisting system is controlled or adjusted based on the working state of the tail rope, and thus is safer.
Claims (10)
- What is claimed is:1. A device for monitoring a tail rope of a mine hoisting system, comprising an upper suspension rod, a lower suspension rod, a processing component, and at least two sensors, wherein the at least two sensors are connected to the processing component; each of the at least two sensors are peripherally spaced at a preset angle, and fixed to the upper suspension rod, with sensing heads facing towards the lower suspension rod; and the lower suspension rod is configured to hang a tail rope and rotatably connected to the upper suspension rod;each of the at least two sensors transmits a first signal to the processing component when a component to be sensed of the lower suspension rod is sensed for the first time;each of the at least two sensors transmits a second signal to the processing component when the component to be sensed of the lower suspension rod is sensed for the second time; and the processing component calculates rotation data of the tail rope based on a position of each of the at least two sensors, a time point at which the component to be sensed of the lower suspension rod is sensed by each of the at least two sensors for the first time, and a time point at which the component to be sensed of the lower suspension rod is sensed by each of the at least two sensors for the second time, wherein the first sensing and the second sensing are adjacent or non-adjacent sensing.
- 2. The device of monitoring the tail rope of the mine hoisting system according to claim 1, wherein the component to be sensed is at a preset distance from the sensor, and there is one or more components to be sensed.
- 3. The device for monitoring the tail rope of the mine hoisting system according to claim 1 or 2, wherein the lower suspension rod is connected to the upper suspension rod via a connecting sleeve; an upper end of the connecting sleeve is rotatably connected to the upper suspension rod, and a lower end of the connecting sleeve is fixed to an upper end of the lower suspension rod.
- 4. The device for monitoring the tail rope of the mine hoisting system according to claim 3, wherein at least one rolling bearing is disposed in an inner cavity of the connecting sleeve; the rolling bearing comprises an inner ring fixed to a lower end of the upper suspension rod and an outer ring rotating relative to the inner ring; and the outer ring is fixed to the inner cavity of the connecting sleeve.
- 5. The device for monitoring the tail rope of the mine hoisting system according to claim 3, wherein the device for monitoring the tail rope is further provided with a monitoring component mounting bracket; the monitoring component mounting bracket is annular with an upper end fixed to the upper suspension rod and a lower end sleeved on the connecting sleeve; and the sensor is disposed on the lower end of the monitoring component mounting bracket.
- 6. The device for monitoring the tail rope of the mine hoisting system according to claim 3, wherein the sensor is a Hall sensor, and the component to be sensed comprises a magnetic element that can be sensed by the Hall sensor; and the component to be sensed is disposed on the connecting sleeve.
- 7. The device for monitoring the tail rope of the mine hoisting system according to claim 1 or 2, wherein the device for monitoring the tail rope is further provided with a signal acquisition component; one end of the signal acquisition component is connected to the sensor, and the other end of the signal acquisition component is connected to the processing component; and the signal acquisition component acquires a sensing signal of the sensor to be transmitted to the processing component.
- 8. The device for monitoring the tail rope of the mine hoisting system according to claim 7, wherein the processing component is further provided with a memory and a display; the memory is configured to store the sensing signal received by the processing component and data processed by the processing component, and the display is configured to display the data processed by the processing component.
- 9. The device for the tail rope monitoring of the mine hoisting system according to claim 7, wherein the device for monitoring the tail rope is further provided with a wireless transmitter and a wireless receiver; the wireless transmitter is connected to the signal acquisition component, and the wireless receiver is connected to the processing component; the wireless transmitter is configured to transmit the sensing signal acquired by the signal acquisition component, and the wireless receiver is configured to receive the sensing signal and transfer same to the processing component.
- 10. The device for monitoring the tail rope of the mine hoisting system according to claim 7, wherein the signal acquisition component is a single chip microcomputer, and the processing component is an industrial computer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810672903.2A CN108910635A (en) | 2018-06-26 | 2018-06-26 | A kind of tail rope monitoring device of mine hoisting system |
| CN201810672903.2 | 2018-06-26 | ||
| PCT/CN2018/102660 WO2020000624A1 (en) | 2018-06-26 | 2018-08-28 | Tail rope monitoring device of mine hoist system |
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| Publication Number | Publication Date |
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| AU2018427246A1 true AU2018427246A1 (en) | 2020-01-16 |
| AU2018427246B2 AU2018427246B2 (en) | 2021-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| AU2018427246A Active AU2018427246B2 (en) | 2018-06-26 | 2018-08-28 | Tail rope monitoring device of mine hoisting system |
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|---|---|
| CN (1) | CN108910635A (en) |
| AU (1) | AU2018427246B2 (en) |
| CA (1) | CA3065833C (en) |
| WO (1) | WO2020000624A1 (en) |
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| CN109761125B (en) * | 2019-01-25 | 2020-10-27 | 中国矿业大学 | Friction type mine hoist round tail rope rotation monitoring device and control method |
| CN109879131A (en) * | 2019-03-25 | 2019-06-14 | 安徽开发矿业有限公司 | Rotation status monitoring device for elevator balance rope suspension arrangement |
| CN110844755B (en) * | 2019-11-21 | 2021-06-01 | 中国矿业大学 | Translation buffer type round tail rope suspension device and method |
| WO2021221690A1 (en) | 2020-05-01 | 2021-11-04 | Pivot Bio, Inc. | Modified bacterial strains for improved fixation of nitrogen |
| CA3172322A1 (en) | 2020-05-01 | 2021-11-04 | Karsten TEMME | Modified bacterial strains for improved fixation of nitrogen |
| CN112173911A (en) * | 2020-09-17 | 2021-01-05 | 开滦（集团）有限责任公司电信分公司 | Detection system and method for tail rope rotator |
| AU2022301301A1 (en) | 2021-07-02 | 2023-12-14 | Pivot Bio, Inc. | Genetically-engineered bacterial strains for improved fixation of nitrogen |
| CN113566885A (en) * | 2021-07-24 | 2021-10-29 | 代小敏 | Mine safety production management equipment |
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| ES2249198T3 (en) * | 2004-02-19 | 2007-11-01 | Thyssenkrupp Aufzugswerke Gmbh | MOTOR PULLEY ELEVATOR WITHOUT MACHINE ROOM. |
| CN102030279B (en) * | 2010-12-31 | 2014-10-29 | 徐州重型机械有限公司 | Crane and anti-over-discharging protection device of hoisting rope thereof |
| CN202440210U (en) * | 2012-01-09 | 2012-09-19 | 中国矿业大学 | Round tail rope suspension device |
| DE102013017431A1 (en) * | 2013-08-28 | 2015-03-05 | Liebherr-Components Biberach Gmbh | Swivels |
| CN203754170U (en) * | 2014-03-07 | 2014-08-06 | 中煤第五建设有限公司 | Hoisting sheave and steel wire rope stress monitoring and controlling device on mine shaft winch and elevator |
| CN104477723B (en) * | 2014-12-25 | 2017-03-15 | 中国矿业大学 | A kind of mine hoist winds the determination methods of reel disorder cable monitoring system |
| CN104555644B (en) * | 2015-01-08 | 2016-11-30 | 江西稀有稀土金属钨业集团有限公司 | The skip bucket tail rope hanger of a kind of fall arrest and tail rope anti-drop method |
| CN105347129B (en) * | 2015-12-03 | 2018-01-19 | 中国矿业大学 | A kind of wound form roller volume puts steel wire rope moving state identification System and method for |
| CN205855694U (en) * | 2016-07-15 | 2017-01-04 | 三菱电机上海机电电梯有限公司 | With torsion from the elevator wire rope fag end device of release function |
| CN106865375A (en) * | 2017-02-23 | 2017-06-20 | 太原理工大学 | Hoisting container hanging steel rope on-line monitoring system and method |
| CN106966281A (en) * | 2017-05-09 | 2017-07-21 | 重庆迈高电梯有限公司 | A kind of elevator adaptive equalization chain apparatus |
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2018
- 2018-06-26 CN CN201810672903.2A patent/CN108910635A/en active Pending
- 2018-08-28 WO PCT/CN2018/102660 patent/WO2020000624A1/en active Application Filing
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| WO2020000624A1 (en) | 2020-01-02 |
| CA3065833A1 (en) | 2019-12-26 |
| CN108910635A (en) | 2018-11-30 |
| CA3065833C (en) | 2021-01-12 |
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