CN114337382B - Protection method and device for mining equipment - Google Patents
Protection method and device for mining equipment Download PDFInfo
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- CN114337382B CN114337382B CN202111433287.3A CN202111433287A CN114337382B CN 114337382 B CN114337382 B CN 114337382B CN 202111433287 A CN202111433287 A CN 202111433287A CN 114337382 B CN114337382 B CN 114337382B
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Abstract
The invention discloses a protection method and a device for mining equipment, wherein the method comprises the following steps: the working states of the left moment limiter, the right moment limiter, the cutting speed reducer, the left torque shaft and the right torque shaft are controlled by acquiring the motor currents respectively corresponding to the first time period, the second time period and the third time period after the left cutting motor and the right cutting motor are started, so that the working states of all parts in the left cutting mechanism and all parts in the right cutting mechanism and all the cutting speed reducer in the left cutting mechanism are accurately determined based on the acquired motor currents respectively corresponding to the left cutting motor and the right cutting motor in different time periods after the left cutting motor and the right cutting motor are started in the running process of the cutting part of the mining equipment, the subsequent control of the mining equipment based on the acquired working states is facilitated, the damage to the left moment limiter, the right moment limiter, the cutting speed reducer, the left torque shaft and the right torque shaft is avoided, and the mining equipment is protected.
Description
Technical Field
The invention relates to the field of coal mine machinery, in particular to a protection method and device for mining equipment.
Background
At present, due to the severe working environment of the coal mine excavating equipment, the working condition environment faced in the working process of the cutting part of the coal mine excavating equipment is more and more complex, the cutting part of the coal mine excavating equipment is damaged to a certain extent in the cutting process, and the cutting part of the coal mine excavating equipment is required to be comprehensively examined.
Disclosure of Invention
The present invention aims to solve one of the technical problems in the related art to a certain extent.
The application provides a protection method and device for mining equipment.
In one aspect, an embodiment of the present application provides a method for protecting mining equipment, where the method includes: wherein, the mining equipment includes left cutting portion mechanism and right cutting portion mechanism and cutting reduction gear, wherein, left cutting portion mechanism includes left cutting motor, left torque limiter and left moment of torsion axle, right cutting portion mechanism includes right cutting motor, right torque limiter and right moment of torsion axle, includes: acquiring motor currents respectively corresponding to a first time period, a second time period and a third time period after the left cutting motor and the right cutting motor are started, wherein the duration of the second time period is longer than that of the first time period, and the duration of the third time period is longer than that of the third time period; determining the working states of the left moment limiter and the right moment limiter according to motor currents respectively corresponding to the left cutting motor and the right cutting motor in a first time period after the left cutting motor and the right cutting motor are started; determining the working state of the cutting speed reducer according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a second time period after the left cutting motor and the right cutting motor are started; and determining the working states of the left torque shaft and the right torque shaft according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a third time period after the left cutting motor and the right cutting motor are started.
In one embodiment of the present application, the determining, according to motor currents corresponding to the left cutting motor and the right cutting motor in a first period of time after starting, the working states of the left moment limiter and the right moment limiter includes: comparing the motor current corresponding to the first time period after the left cutting motor is started with the motor current corresponding to the first time period after the right cutting motor is started to obtain a first comparison result; and determining the working states of the left moment limiter and the right moment limiter according to a first comparison result.
In one embodiment of the present application, the determining, according to the first comparison result, the working states of the left moment limiter and the right moment limiter includes: if the first comparison result is: the motor current corresponding to the left cutting motor is obviously larger than the motor current corresponding to the right cutting motor, and the left moment limiter and the right moment limiter are determined to be in a normal working state; if the first comparison result is: and if the current difference between the motor current corresponding to the left cutting motor and the motor current corresponding to the right cutting motor is within a preset first current threshold value, determining that the left moment limiter and the right moment limiter are both in a fault state.
In one embodiment of the present application, the determining, according to motor currents corresponding to the left cutting motor and the right cutting motor in a first period of time after starting, the working states of the left moment limiter and the right moment limiter includes: acquiring first historical motor currents corresponding to the left cutting motor and the right cutting motor respectively in the first time period; comparing the motor current corresponding to the left cutting motor with the first historical motor current, and comparing the motor current corresponding to the right cutting motor with the first historical motor current to obtain a second comparison result; if the second comparison result is: the motor current corresponding to the left cutting motor is smaller than the corresponding first historical motor current, and the current difference between the left cutting motor and the first historical motor current is larger than a preset second current threshold; the motor current corresponding to the right cutting motor is smaller than the corresponding first historical motor current, and the current difference between the motor current and the current difference is larger than a preset second current threshold value, and the left moment limiter and the right moment limiter are determined to be in a fault state; if the second comparison result is: the motor current corresponding to the left cutting motor is greater than or equal to the corresponding first historical motor current; and if the motor current corresponding to the right cutting motor is greater than or equal to the corresponding first historical motor current, determining that the left moment limiter and the right moment limiter are both in a fault state.
In one embodiment of the present application, the determining the working state of the cutting reducer according to the motor currents corresponding to the second time period after the start of the left cutting motor and the right cutting motor includes: acquiring second historical motor currents corresponding to the left cutting motor and the right cutting motor respectively in the second time period; comparing the motor current corresponding to the left cutting motor with a second historical motor current, and comparing the motor current corresponding to the right cutting motor with the second historical motor current to obtain a third comparison result; and determining the working state of the cutting speed reducer according to the third comparison result.
In one embodiment of the present application, the determining, according to the third comparison result, the working state of the cutting speed reducer includes: if the third comparison result is: the motor current corresponding to the left cutting motor and the corresponding third historical motor current have larger and irregular differences, and the motor current corresponding to the right cutting motor and the corresponding third historical motor current have larger and irregular differences, so that the cutting speed reducer is determined to be in a fault state; if the third comparison result is: and the motor current corresponding to the left cutting motor and the corresponding third historical motor current have smaller and regular differences, and the motor current corresponding to the right cutting motor and the corresponding third historical motor current have smaller and regular differences, so that the cutting speed reducer is determined to be in a normal working state.
In one embodiment of the present application, the determining the working states of the left torque shaft and the right torque shaft according to the motor currents corresponding to the left cutting motor and the right cutting motor respectively in the third period after the start includes: calculating a motor current average value according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a third time period after the left cutting motor and the right cutting motor are started; comparing the motor current corresponding to the third time period after the left cutting motor is started with the motor current average value to obtain a fourth comparison result; determining the working state of the left torque shaft according to the fourth comparison result; comparing the motor current corresponding to the third time period after the right cutting motor is started with the motor current average value to obtain a fifth comparison result; and determining the working states of the left torque shaft and the right torque shaft according to a fifth comparison result.
In one embodiment of the present application, the determining the working state of the left torque shaft according to the fourth comparison result includes: if the fourth comparison result is: the motor current corresponding to the left cutting motor is larger than the average value of the motor currents with preset multiples, and the left torque shaft is determined to be in a fault state; if the fourth comparison result is: the motor current corresponding to the left cutting motor is smaller than or equal to the average value of the motor currents with preset multiples, and the left torque shaft is determined to be in a normal working state; and determining the working states of the right torque shaft and the right torque shaft according to a fifth comparison result, wherein the working states comprise: if the fifth comparison result is: the motor current corresponding to the right cutting motor is larger than the average value of the motor currents with preset times, and the right torque shaft is determined to be in a fault state; if the fifth comparison result is: and if the motor current corresponding to the right cutting motor is smaller than or equal to the average value of the motor currents with preset multiples, determining that the right torque shaft is in a normal working state.
In one embodiment of the present application, the method further comprises: averaging the motor current of the left cutting motor and the motor current of the right cutting motor to obtain a real-time motor current average value; according to the real-time motor current average value, adjusting quantitative parameters of the motor of the left cutting motor and the motor of the right cutting motor; and controlling the working states of the motor of the left cutting motor and the motor of the right cutting motor according to the quantitative parameters.
The invention discloses a protection method of a mining device, which comprises the steps of acquiring motor currents respectively corresponding to a first time period, a second time period and a third time period after a left cutting motor and a right cutting motor are started to control working states of a left moment limiter, a right moment limiter, a cutting speed reducer, a left torque shaft and a right torque shaft, so that the working states of each part in a left cutting mechanism and each part in a right cutting mechanism and each cutting speed reducer in the left cutting mechanism are accurately determined based on the acquired motor currents respectively corresponding to the left cutting motor and the right cutting motor in different time periods after the left cutting motor and the right cutting motor are started in the running process of the cutting part of the mining device, the working states of the left moment limiter, the right moment limiter, the cutting speed reducer, the left torque shaft and the right torque shaft are conveniently controlled based on the acquired working states, and the mining device is protected.
Another aspect of the present application provides a protection device for a mining apparatus, wherein the mining apparatus includes a left cutting unit mechanism and a right cutting unit mechanism and a cutting speed reducer, wherein the left cutting unit mechanism includes a left cutting motor, a left torque limiter and a left torque shaft, the right cutting unit mechanism includes a right cutting motor, a right torque limiter and a right torque shaft, including: the device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring motor currents respectively corresponding to a first time period, a second time period and a third time period after the left cutting motor and the right cutting motor are started, the duration of the second time period is longer than that of the first time period, and the duration of the third time period is longer than that of the third time period; the first determining module is used for determining the working states of the left moment limiter and the right moment limiter according to motor currents respectively corresponding to the left cutting motor and the right cutting motor in a first time period after the left cutting motor and the right cutting motor are started; the second determining module is used for determining the working state of the cutting speed reducer according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a second time period after the left cutting motor and the right cutting motor are started; and the third determining module is used for determining the working states of the left torque shaft and the right torque shaft according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a third time period after the left cutting motor and the right cutting motor are started.
In one embodiment of the present application, the first determining module includes: the first comparison unit is used for comparing the motor current corresponding to the first time period after the left cutting motor is started with the motor current corresponding to the first time period after the right cutting motor is started to obtain a first comparison result; and the first determining unit is used for determining the working states of the left moment limiter and the right moment limiter according to the first comparison result.
In one embodiment of the present application, the first determining unit is specifically configured to: if the first comparison result is: the motor current corresponding to the left cutting motor is obviously larger than the motor current corresponding to the right cutting motor, and the left moment limiter and the right moment limiter are determined to be in a normal working state; if the first comparison result is: and if the current difference between the motor current corresponding to the left cutting motor and the motor current corresponding to the right cutting motor is within a preset first current threshold value, determining that the left moment limiter and the right moment limiter are both in a fault state.
In one embodiment of the present application, the first determining module is specifically configured to: acquiring first historical motor currents corresponding to the left cutting motor and the right cutting motor respectively in the first time period; comparing the motor current corresponding to the left cutting motor with the first historical motor current, and comparing the motor current corresponding to the right cutting motor with the first historical motor current to obtain a second comparison result; if the second comparison result is: the motor current corresponding to the left cutting motor is smaller than the corresponding first historical motor current, and the current difference between the left cutting motor and the first historical motor current is larger than a preset second current threshold; the motor current corresponding to the right cutting motor is smaller than the corresponding first historical motor current, and the current difference between the motor current and the current difference is larger than a preset second current threshold value, and the left moment limiter and the right moment limiter are determined to be in a fault state; if the second comparison result is: the motor current corresponding to the left cutting motor is greater than or equal to the corresponding first historical motor current; and if the motor current corresponding to the right cutting motor is greater than or equal to the corresponding first historical motor current, determining that the left moment limiter and the right moment limiter are both in a fault state.
In one embodiment of the present application, the second determining module includes: the acquisition unit is used for acquiring second historical motor currents corresponding to the left cutting motor and the right cutting motor respectively in the second time period; the second comparison unit is used for comparing the motor current corresponding to the left cutting motor with the second historical motor current and comparing the motor current corresponding to the right cutting motor with the second historical motor current to obtain a third comparison result; and the second determining unit is used for determining the working state of the cutting speed reducer according to the third comparison result.
In an embodiment of the present application, the second determining unit is specifically configured to: if the third comparison result is: the motor current corresponding to the left cutting motor and the corresponding third historical motor current have larger and irregular differences, and the motor current corresponding to the right cutting motor and the corresponding third historical motor current have larger and irregular differences, so that the cutting speed reducer is determined to be in a fault state; if the third comparison result is: and the motor current corresponding to the left cutting motor and the corresponding third historical motor current have smaller and regular differences, and the motor current corresponding to the right cutting motor and the corresponding third historical motor current have smaller and regular differences, so that the cutting speed reducer is determined to be in a normal working state.
In one embodiment of the present application, the third determining module includes: the calculating unit is used for calculating a motor current average value according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a third time period after the left cutting motor and the right cutting motor are started; the third comparison unit is used for comparing the motor current corresponding to the third time period after the left cutting motor is started with the motor current average value so as to obtain a fourth comparison result; the third determining unit is used for determining the working state of the left torque shaft according to the fourth comparison result; a fourth comparing unit, configured to compare a motor current corresponding to a third time period after the right cutting motor is started with the motor current average value, so as to obtain a fifth comparison result; and the fourth determining unit is used for determining the working states of the left torque shaft and the right torque shaft according to the fifth comparison result.
In one embodiment of the present application, the third determining unit is specifically configured to include: if the fourth comparison result is: the motor current corresponding to the left cutting motor is larger than the average value of the motor currents with preset multiples, and the left torque shaft is determined to be in a fault state; if the fourth comparison result is: the motor current corresponding to the left cutting motor is smaller than or equal to the average value of the motor currents with preset multiples, and the left torque shaft is determined to be in a normal working state; the fourth determining unit is specifically configured to: if the fifth comparison result is: the motor current corresponding to the right cutting motor is larger than the average value of the motor currents with preset times, and the right torque shaft is determined to be in a fault state; if the fifth comparison result is: and if the motor current corresponding to the right cutting motor is smaller than or equal to the average value of the motor currents with preset multiples, determining that the right torque shaft is in a normal working state.
In one embodiment of the present application, the apparatus further comprises: the generation module is used for averaging the motor current of the left cutting motor and the motor current of the right cutting motor to obtain a real-time motor current average value; the adjusting module is used for adjusting the quantitative parameters of the motor of the left cutting motor and the right cutting motor according to the real-time motor current average value; and the control module is used for controlling the working states of the motor of the left cutting motor and the right cutting motor according to the quantitative parameters.
The invention discloses a protection device of a mining device, which is characterized in that the working states of a left moment limiter, a right moment limiter, a cutting speed reducer, a left torque shaft and a right torque shaft are controlled by acquiring motor currents respectively corresponding to a first time period, a second time period and a third time period after a left cutting motor and a right cutting motor are started.
Another aspect of the present application provides a non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the method of protecting mining equipment disclosed in the embodiments of the present application.
Another aspect of the present application proposes a computer program product, which when executed by an instruction processor in the computer program product, implements a method of protecting mining equipment in embodiments of the present application.
Other effects of the above alternative will be described below in connection with specific embodiments.
Drawings
The drawings are for better understanding of the present solution and do not constitute a limitation of the present application. Wherein:
fig. 1 is a flow diagram of a method of protecting mining equipment according to one embodiment of the present application.
FIG. 2 is a diagram of the operational state of the walk cutter according to one embodiment of the present application.
Fig. 3 is a state diagram of the operation of the walk cutter according to another embodiment of the present application.
Fig. 4 is a flow chart of a method of protecting mining equipment according to another embodiment of the present application.
Fig. 5 is a flow chart of a method of protecting mining equipment according to another embodiment of the present application.
Fig. 6 is a flow chart of a method of protecting mining equipment according to another embodiment of the present application.
Fig. 7 is a schematic structural view of a protection device of mining equipment according to an embodiment of the present application.
Fig. 8 is a schematic structural view of a protection device of mining equipment according to another embodiment of the present application.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application.
The following describes a protection method and a protection device for mining equipment according to embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a flow diagram of a method of protecting mining equipment according to one embodiment of the present application. It should be noted that, the execution body of the protection method of the mining equipment provided in this embodiment is a protection device of the mining equipment, where the protection device of the mining equipment may be implemented in a software and/or hardware manner, and the protection device of the mining equipment may be configured in the mining equipment, or may be configured in an electronic device that communicates with the mining equipment, where the electronic device may include, but is not limited to, a terminal device, and the embodiment is not specifically limited to the electronic device. In this embodiment, the description is made taking an example in which the protection device of the mining equipment is disposed in the mining equipment.
Wherein, it is understood that the mining equipment includes left cutting portion mechanism and right cutting portion mechanism and cutting reduction gear, wherein, left cutting portion mechanism includes left cutting motor, left torque limiter and left moment axle, right cutting portion mechanism includes right cutting motor, right torque limiter and right moment axle, specifically, left cutting portion mechanism and right cutting portion mechanism all are connected with cutting reduction gear, in the left cutting portion mechanism, left cutting motor and left moment axle are connected, left torque axle is connected with left torque limiter, left torque limiter is connected with cutting reduction gear. In the right cutting part mechanism, a right cutting motor is connected with a right torque shaft, the right torque shaft is connected with a right torque limiter, and the right torque limiter is connected with a cutting speed reducer.
As shown in fig. 1, the method of protecting the mining equipment may include:
In some embodiments, the left and right cutting motors may be mounted on both sides of the mining equipment, but are not limited thereto.
In some embodiments, the left cutting motor may be controlled to be started first and the right cutting motor may be started after a preset time, for example, the preset time may be 3 seconds, specifically, the right cutting motor may be started after the left cutting motor is started for 3 seconds, but not limited thereto.
In some embodiments, to accurately determine the working state of the mining apparatus, motor currents corresponding to the first, second, and third time periods of the left and right cutting motors after the start may be obtained.
The duration corresponding to the first period, the second period, and the third period may be preset in the device according to the actual service requirement, for example, the duration of the first period may be 5s, the duration of the second period may be 10s, and the duration of the third period may be 10s, but is not limited thereto.
And 102, determining the working states of the left moment limiter and the right moment limiter according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a first time period after the left cutting motor and the right cutting motor are started.
In some embodiments, in order to prevent the mining device from being overloaded and causing a shutdown loss, the working states of the left moment limiter and the right moment limiter may be determined according to a comparison result of a motor current corresponding to a first time period after the left cutting motor is started and a motor current corresponding to a first time period after the right cutting motor is started, so that the working states of the left moment limiter and the right moment limiter may be pre-determined in advance.
Wherein the historical motor current may be obtained from a database, but is not limited thereto.
The working state can be a fault state and a normal working state.
And step 103, determining the working state of the cutting speed reducer according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in the second time period after the starting.
In some embodiments, in order to prevent the cutting machine from being damaged, the motor current corresponding to the left cutting motor may be compared with the corresponding historical motor current, and the motor current corresponding to the right cutting motor may be compared with the corresponding historical motor current, so that the working state of the cutting speed reducer may be determined according to the comparison result, and the working state of the cutting speed reducer may be pre-determined in advance to protect the cutting machine.
And 104, determining the working states of the left torque shaft and the right torque shaft according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a third time period after the left cutting motor and the right cutting motor are started.
In some embodiments, the working states of the left torque shaft and the right torque shaft may be determined according to the comparison result of the motor currents corresponding to the third time period after the start of the left cutting motor and the right cutting motor and the motor current average value of the motor currents corresponding to the third time period after the start of the left cutting motor and the right cutting motor, so that the working states of the left torque shaft and the right torque shaft may be pre-determined in advance.
In other embodiments, it is understood that the left torque shaft is connected to the left cutting motor, the right torque shaft is connected to the right cutting motor, and when the cutting decelerator corresponding to the left cutting motor and the right cutting motor, the left torque limiter and the right torque limiter fail, the current directly damages the left torque shaft and the right torque shaft to protect the left cutting motor and the right cutting motor, the left torque limiter and the right torque limiter from damage.
The invention discloses a protection method of a mining device, which comprises the steps of acquiring motor currents respectively corresponding to a first time period, a second time period and a third time period after a left cutting motor and a right cutting motor are started to control working states of a left moment limiter, a right moment limiter, a cutting speed reducer, a left torque shaft and a right torque shaft, so that the working states of each part in a left cutting mechanism and each part in a right cutting mechanism and each cutting speed reducer in the left cutting mechanism are accurately determined based on the acquired motor currents respectively corresponding to the left cutting motor and the right cutting motor in different time periods after the left cutting motor and the right cutting motor are started in the running process of the cutting part of the mining device, the working states of the left moment limiter, the right moment limiter, the cutting speed reducer, the left torque shaft and the right torque shaft are conveniently controlled based on the acquired working states, and the mining device is protected.
In some embodiments, one implementation of determining the working states of the left cutting motor and the right cutting motor may be to average the motor current of the left cutting motor and the motor current of the right cutting motor to obtain real-time motor current average values, then adjust the quantitative parameters of the motors of the left cutting motor and the right cutting motor according to the real-time motor current average values, and control the working states of the motors of the left cutting motor and the right cutting motor according to the adjusted quantitative parameters, so that the left cutting unit mechanism and the right cutting unit mechanism of the mining equipment work in an optimal state.
Based on the above embodiment, the above mining apparatus further includes an oil pump and a control handle, where the control handle is respectively linked with the left cutting motor and the right cutting motor, and may control the left cutting motor and the right cutting motor to operate by starting the oil pump and by the control handle, and control the working states of the left cutting motor and the right cutting motor according to the quantitative parameters when the left cutting motor and the right cutting motor travel, for example, if the current of the left cutting motor and the right cutting motor is in the interval of 0-70A at this time, the given rotation speeds N of the left cutting motor and the right cutting motor may be controlled by the cutting traction coefficient K and the handle output value X, so as to ensure that the working states of the left cutting motor and the right cutting motor are in an optimal state. Fig. 2 is a diagram of an operating state of the walking cutting machine according to an embodiment of the present application, as shown in fig. 2, wherein the ordinate of fig. 2 is a given rotation speed N, and the abscissa is a handle value output value X.
Specifically, the given rotational speeds N of the left cutting motor and the right cutting motor can be controlled by the cutting traction coefficient K and the handle output value X.
In some embodiments, the formula for calculating N based on the cutting traction coefficient K and the handle output value X may be:
N＝[(K+1)/18]*[(X/255)*2300]
wherein, the value of K is 1-12, and the value of X is 0-255.
Specifically, when the cutting traction coefficient is 1 and the position in the handle is at the maximum, the rotation speed of the motor is set to be 0-255 rpm.
When the cutting traction coefficient is 2 and the middle position of the handle is the maximum, the rotation speed of the motor is set to be 0-383 revolutions per minute.
And when the cutting traction coefficient is 3 and the middle position of the handle is at the maximum, the rotation speed of the motor is set to be 0-511 rpm.
And when the cutting traction coefficient is 4 and the middle position of the handle is at the maximum, the rotation speed of the motor is set to be 0-638 rpm.
When the cutting traction coefficient is 5 and the middle position of the handle is the maximum, the rotation speed of the motor is set to be 0-766 rpm.
If the current of the left cutting motor and the right cutting motor is in the range of 70-270A, the given rotating speeds N of the left cutting motor and the right cutting motor can be controlled by the cutting traction coefficient K and the cutting current I so as to ensure that the working states of the left cutting motor and the right cutting motor are in the optimal states. Fig. 3 is a diagram of an operating state of the walking cutting machine according to another embodiment of the present application, as shown in fig. 3, wherein the ordinate of fig. 3 is a given rotation speed N, and the abscissa is a cutting current I.
Specifically, the given rotational speeds N of the left cutting motor and the right cutting motor can be controlled by the cutting traction coefficient K and the cutting current I.
In some embodiments, the formula for calculating N based on the cutting traction coefficient K and the handle output value X may be:
N＝[(K+1)/12]*(1890-7*I)
wherein, the K takes the value of 1 to 12 and the I takes the value of 70 to 270.
Specifically, when the cutting current is 70A and the cutting traction coefficient is 1-12, the motor is correspondingly given to rotate at 233-1495 rpm.
When the cutting current is 80A and the cutting traction coefficient is 1-12, the motor is correspondingly given to rotate at 221-1440 rpm.
When the cutting current is 90A and the cutting traction coefficient is 1-12, the given rotating speed of the motor is 210-1365 rpm.
In other embodiments, the operating states of the left cutting motor and the right cutting motor may be determined based on the real-time temperatures of the left cutting motor and the right cutting motor, for example, if the real-time temperatures of the left cutting motor and the right cutting motor reach 120 ℃, the left cutting motor and the right cutting motor are controlled to stop, and if the real-time temperatures of the left cutting motor and the right cutting motor are lower than 80 ℃, the left cutting motor and the right cutting motor are controlled to start up again, not limited to this.
Fig. 4 is a flow chart of a protection method of a mining apparatus according to another embodiment of the present application, where it should be noted that the present embodiment further extends or refines the above embodiment.
As shown in fig. 4, may include:
It should be noted that, for the explanation of the step 401, reference may be made to the related description of the above embodiment, which is not repeated here.
In some embodiments, if the first comparison result is that the motor current corresponding to the left cutting motor is significantly greater than the motor current corresponding to the right cutting motor, then it is determined that both the left torque limiter and the right torque limiter are in a normal operating state.
And if the first comparison result shows that the current difference between the motor current corresponding to the left cutting motor and the motor current corresponding to the right cutting motor is within the preset first current threshold value, determining that the left moment limiter and the right moment limiter are both in a fault state.
In other embodiments, the second comparison result may be obtained by obtaining the first historical motor currents corresponding to the left cutting motor and the right cutting motor in the first time period, comparing the motor currents corresponding to the left cutting motor with the first historical motor currents, comparing the motor currents corresponding to the right cutting motor with the first historical motor currents, and determining the working states of the left moment limiter and the right moment limiter according to the second comparison result.
Specifically, if the second comparison result is that the motor current corresponding to the left cutting motor is smaller than the corresponding first historical motor current, and the current difference between the two is larger than a preset second current threshold; and if the motor current corresponding to the right cutting motor is smaller than the corresponding first historical motor current and the current difference between the motor current and the current difference is larger than a preset second current threshold value, determining that the left moment limiter and the right moment limiter are both in a fault state.
And if the second comparison result is that the motor current corresponding to the left cutting motor is greater than or equal to the corresponding first historical motor current, and the motor current corresponding to the right cutting motor is greater than or equal to the corresponding first historical motor current, determining that both the left moment limiter and the right moment limiter are in a fault state.
And step 404, determining the working state of the cutting speed reducer according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in the second time period after the starting.
And step 405, determining the working states of the left torque shaft and the right torque shaft according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a third time period after the left cutting motor and the right cutting motor are started.
The invention discloses a protection method of mining equipment, which comprises the steps of obtaining motor currents respectively corresponding to a first time period, a second time period and a third time period after a left cutting motor and a right cutting motor are started to control working states of a left moment limiter, a right moment limiter, a cutting speed reducer, a left torque shaft and a right torque shaft, determining the working states of the cutting speed reducer, the left torque shaft and the right torque shaft based on the motor currents respectively corresponding to the second time period and the third time period in the operation process of a cutting part of the mining equipment, and accurately determining the working states of the left moment limiter and the right moment limiter based on the motor currents of the left cutting machine and the motor currents of the right cutting machine according to the first time period so as to control the mining equipment, thereby protecting the left moment limiter and the right moment limiter from being damaged.
Fig. 5 is a schematic flow chart of a method for protecting mining equipment according to another embodiment of the present application, where it is to be noted that the method of this embodiment is further described, and as shown in fig. 5, the method may include:
It should be noted that, for the explanation of the above steps 501 to 502, reference may be made to the related descriptions of the above embodiments, which are not repeated here.
In step 503, second historical motor currents corresponding to the left cutting motor and the right cutting motor in the second time period are obtained.
In some embodiments, if the third comparison result is that the motor current corresponding to the left cutting motor and the corresponding third historical motor current have large and irregular differences, and the motor current corresponding to the right cutting motor and the corresponding third historical motor current have large and irregular differences, the cutting speed reducer is determined to be in a fault state.
And if the third comparison result shows that the motor current corresponding to the left cutting motor and the corresponding third historical motor current have smaller and regular differences, and the motor current corresponding to the right cutting motor and the corresponding third historical motor current have smaller and regular differences, determining that the cutting speed reducer is in a normal working state.
And step 506, determining the working states of the left torque shaft and the right torque shaft according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a third time period after the left cutting motor and the right cutting motor are started.
The invention discloses a protection method of mining equipment, which comprises the steps of obtaining motor currents respectively corresponding to a first time period, a second time period and a third time period after a left cutting motor and a right cutting motor are started to control working states of a left moment limiter, a right moment limiter, a cutting speed reducer, a left torque shaft and a right torque shaft, determining the working states of the left moment limiter, the right moment limiter, the left torque shaft and the right torque shaft based on the motor currents respectively corresponding to the first time period and the third time period in the operation process of a cutting part of the mining equipment, and accurately determining the working states of the cutting speed reducer based on the motor currents of the left cutting motor, the motor currents of the right cutting motor and historical motor currents according to the second time period so as to control the mining equipment and prevent the cutting speed reducer from being damaged.
Fig. 6 is a schematic flow chart of a method for protecting mining equipment according to another embodiment of the present application, where it is to be noted that the method of this embodiment is further described, and as shown in fig. 6, the method may include:
and 601, acquiring motor currents respectively corresponding to a first time period, a second time period and a third time period after the left cutting motor and the right cutting motor are started, wherein the duration of the second time period is longer than that of the first time period, and the duration of the third time period is longer than that of the third time period.
And step 603, determining the working state of the cutting speed reducer according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in the second time period after the starting.
It should be noted that, for the explanation of the above steps 601 to 603, reference may be made to the related descriptions of the above embodiments, which are not repeated here.
In some embodiments, if the fourth comparison result is: and if the motor current corresponding to the left cutting motor is larger than the average value of the motor currents with preset multiples, determining that the left torque shaft is in a fault state.
And if the fourth comparison result is that the motor current corresponding to the left cutting motor is smaller than or equal to the average value of the motor currents of the preset times, determining that the left torque shaft is in a normal working state.
In step 607, the motor current corresponding to the third time period after the right cutting motor is started is compared with the average motor current value, so as to obtain a fifth comparison result.
In some embodiments, if the fifth comparison result is: and if the motor current corresponding to the right cutting motor is larger than the average value of the motor currents with preset multiples, determining that the right torque shaft is in a fault state.
And if the fifth comparison result is that the motor current corresponding to the right cutting motor is smaller than or equal to the average value of the motor currents of the preset times, determining that the right torque shaft is in a normal working state.
The invention discloses a protection method of mining equipment, which comprises the steps of obtaining motor currents respectively corresponding to a first time period, a second time period and a third time period after a left cutting motor and a right cutting motor are started to control working states of a left torque limiter, a right torque limiter, a cutting speed reducer, a left torque shaft and a right torque shaft, determining the working states of the left torque limiter, the right torque limiter and the cutting speed reducer based on the motor currents respectively corresponding to the first time period and the second time period in the operation process of a cutting part of the mining equipment, and accurately determining the working states of the left torque shaft and the right torque shaft based on the comparison result of the motor currents corresponding to the third time period after the left cutting motor is started and the average value of the motor currents corresponding to the third time period after the right cutting motor is started, so as to protect the left torque shaft and the right torque shaft from being damaged.
Fig. 7 is a schematic structural view of a protection device of mining equipment according to an embodiment of the present application.
As shown in fig. 7, the protection device 700 of the mining equipment comprises an acquisition module 701, a first determination module 702, a second determination module 703 and a third determination module 704, wherein:
The obtaining module 701 is configured to obtain motor currents corresponding to a first time period, a second time period, and a third time period after the left cutting motor and the right cutting motor are started, where a duration of the second time period is greater than a duration of the first time period, and a duration of the third time period is greater than a duration of the third time period.
The first determining module 702 is configured to determine an operating state of the left moment limiter and the right moment limiter according to motor currents corresponding to the left cutting motor and the right cutting motor respectively in a first period after the left cutting motor and the right cutting motor are started.
The second determining module 703 is configured to determine an operating state of the cutting reducer according to motor currents corresponding to the left cutting motor and the right cutting motor during a second period of time after the start.
And a third determining module 704, configured to determine the working states of the left torque shaft and the right torque shaft according to the motor currents corresponding to the left cutting motor and the right cutting motor in the third time period after the start.
In one embodiment of the present application, as shown in fig. 8, the first determining module 702 includes:
the first comparing unit 7021 is configured to compare a motor current corresponding to a first period of time after the left cutting motor is started with a motor current corresponding to a first period of time after the right cutting motor is started, so as to obtain a first comparison result.
The first determining unit 7022 is configured to determine an operating state of the left moment limiter and the right moment limiter according to the first comparison result.
In one embodiment of the present application, the first determining unit 7022 is specifically configured to:
if the first comparison result is: and the motor current corresponding to the left cutting motor is obviously larger than the motor current corresponding to the right cutting motor, so that the left moment limiter and the right moment limiter are determined to be in a normal working state.
If the first comparison result is: and if the current difference between the motor current corresponding to the left cutting motor and the motor current corresponding to the right cutting motor is within a preset first current threshold value, determining that the left moment limiter and the right moment limiter are both in a fault state.
In one embodiment of the present application, the first determining module 702 is specifically configured to:
and acquiring first historical motor currents respectively corresponding to the left cutting motor and the right cutting motor in a first time period.
And comparing the motor current corresponding to the left cutting motor with the first historical motor current, and comparing the motor current corresponding to the right cutting motor with the first historical motor current to obtain a second comparison result.
If the second comparison result is: the motor current corresponding to the left cutting motor is smaller than the corresponding first historical motor current, and the current difference between the left cutting motor and the first historical motor current is larger than a preset second current threshold; and if the motor current corresponding to the right cutting motor is smaller than the corresponding first historical motor current and the current difference between the motor current and the current difference is larger than a preset second current threshold value, determining that the left moment limiter and the right moment limiter are both in a fault state.
If the second comparison result is: the motor current corresponding to the left cutting motor is greater than or equal to the corresponding first historical motor current; and if the motor current corresponding to the right cutting motor is greater than or equal to the corresponding first historical motor current, determining that both the left moment limiter and the right moment limiter are in a fault state.
In one embodiment of the present application, as shown in fig. 8, the second determining module 703 includes:
the acquiring unit 7031 is configured to acquire second historical motor currents corresponding to each of the left cutting motor and the right cutting motor in a second period of time.
The second comparing unit 7032 is configured to compare the motor current corresponding to the left cutting motor with the second historical motor current, and compare the motor current corresponding to the right cutting motor with the second historical motor current, so as to obtain a third comparison result.
A second determining unit 7033, configured to determine an operating state of the cutting speed reducer according to the third comparison result.
In one embodiment of the present application, the second determining unit 7033 is specifically configured to:
if the third comparison result is: the motor current corresponding to the left cutting motor and the corresponding third historical motor current have larger and irregular differences, and the motor current corresponding to the right cutting motor and the corresponding third historical motor current have larger and irregular differences, so that the cutting speed reducer is determined to be in a fault state.
If the third comparison result is: the motor current corresponding to the left cutting motor and the corresponding third historical motor current have smaller and regular differences, and the motor current corresponding to the right cutting motor and the corresponding third historical motor current have smaller and regular differences, so that the cutting speed reducer is determined to be in a normal working state.
In one embodiment of the present application, as shown in fig. 8, the third determining module 704 includes:
a calculating unit 7041, configured to calculate a motor current average value according to motor currents corresponding to the left cutting motor and the right cutting motor in a third period after starting.
The third comparing unit 7042 is configured to compare a motor current corresponding to a third period of time after the left cutting motor is started with a motor current average value, so as to obtain a fourth comparison result.
Third determining unit 7043 is configured to determine an operating state of the left torque shaft according to the fourth comparison result.
The fourth comparing unit 7044 is configured to compare the motor current corresponding to the third period of time after the right cutting motor is started with the average motor current value, so as to obtain a fifth comparison result.
Fourth determining unit 7045 is configured to determine an operating state of the left torque shaft and the right torque shaft according to the fifth comparison result.
In one embodiment of the present application, the third determining unit 7043 is specifically configured to:
if the fourth comparison result is: and if the motor current corresponding to the left cutting motor is larger than the average value of the motor currents with preset multiples, determining that the left torque shaft is in a fault state.
If the fourth comparison result is: and if the motor current corresponding to the left cutting motor is smaller than or equal to the average value of the motor currents of the preset times, determining that the left torque shaft is in a normal working state.
The fourth determining unit 7045 specifically is configured to:
if the fifth comparison result is: and if the motor current corresponding to the right cutting motor is larger than the average value of the motor currents with preset multiples, determining that the right torque shaft is in a fault state.
If the fifth comparison result is: and if the motor current corresponding to the right cutting motor is smaller than or equal to the average value of the motor currents of the preset times, determining that the right torque shaft is in a normal working state.
In one embodiment of the present application, as shown in fig. 8, the apparatus further includes:
the generating module 705 is configured to average the motor current of the left cutting motor and the motor current of the right cutting motor to obtain a real-time motor current average value.
And the adjusting module 706 is configured to adjust the quantitative parameters of the motor of the left cutting motor and the motor of the right cutting motor according to the real-time average value of the motor current.
And the control module 707 is used for controlling the working states of the motor of the left cutting motor and the right cutting motor according to the quantitative parameters.
The invention discloses a protection device of a mining device, which is characterized in that the working states of a left moment limiter, a right moment limiter, a cutting speed reducer, a left torque shaft and a right torque shaft are controlled by acquiring motor currents respectively corresponding to a first time period, a second time period and a third time period after a left cutting motor and a right cutting motor are started.
According to an embodiment of the present application, there is also provided a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the method of protecting mining equipment disclosed in the embodiments of the present application.
The present application also proposes a computer program product, which when executed by an instruction processor in the computer program product implements a method of protecting mining equipment of an embodiment of the present application.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (10)
1. A method of protecting mining equipment, wherein the mining equipment includes a left cutting unit mechanism and a right cutting unit mechanism and a cutting speed reducer, wherein the left cutting unit mechanism includes a left cutting motor, a left torque limiter, and a left torque shaft, the right cutting unit mechanism includes a right cutting motor, a right torque limiter, and a right torque shaft, comprising:
acquiring motor currents respectively corresponding to a first time period, a second time period and a third time period after the left cutting motor and the right cutting motor are started, wherein the duration of the second time period is longer than that of the first time period, and the duration of the third time period is longer than that of the third time period;
determining the working states of the left moment limiter and the right moment limiter according to motor currents respectively corresponding to the left cutting motor and the right cutting motor in a first time period after the left cutting motor and the right cutting motor are started;
Determining the working state of the cutting speed reducer according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a second time period after the left cutting motor and the right cutting motor are started;
and determining the working states of the left torque shaft and the right torque shaft according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a third time period after the left cutting motor and the right cutting motor are started.
2. The method of claim 1, wherein determining the operating states of the left moment limiter and the right moment limiter according to the motor currents of the left cutting motor and the right cutting motor respectively corresponding to the first time period after starting, comprises:
comparing the motor current corresponding to the first time period after the left cutting motor is started with the motor current corresponding to the first time period after the right cutting motor is started to obtain a first comparison result;
and determining the working states of the left moment limiter and the right moment limiter according to a first comparison result.
3. The method of claim 2, wherein determining the operating states of the left moment limiter and the right moment limiter based on the first comparison result comprises:
If the first comparison result is: the motor current corresponding to the left cutting motor is obviously larger than the motor current corresponding to the right cutting motor, and the left moment limiter and the right moment limiter are determined to be in a normal working state;
if the first comparison result is: and if the current difference between the motor current corresponding to the left cutting motor and the motor current corresponding to the right cutting motor is within a preset first current threshold value, determining that the left moment limiter and the right moment limiter are both in a fault state.
4. The method of claim 1, wherein determining the operating states of the left moment limiter and the right moment limiter according to the motor currents of the left cutting motor and the right cutting motor respectively corresponding to the first time period after starting, comprises:
acquiring first historical motor currents corresponding to the left cutting motor and the right cutting motor respectively in the first time period;
comparing the motor current corresponding to the left cutting motor with the first historical motor current, and comparing the motor current corresponding to the right cutting motor with the first historical motor current to obtain a second comparison result;
If the second comparison result is: the motor current corresponding to the left cutting motor is smaller than the corresponding first historical motor current, and the current difference between the left cutting motor and the first historical motor current is larger than a preset second current threshold; the motor current corresponding to the right cutting motor is smaller than the corresponding first historical motor current, and the current difference between the motor current and the current difference is larger than a preset second current threshold value, and the left moment limiter and the right moment limiter are determined to be in a fault state;
if the second comparison result is: the motor current corresponding to the left cutting motor is greater than or equal to the corresponding first historical motor current; and if the motor current corresponding to the right cutting motor is greater than or equal to the corresponding first historical motor current, determining that the left moment limiter and the right moment limiter are both in a fault state.
5. The method of claim 1, wherein determining the operating state of the cutting decelerator based on the motor currents of the left and right cutting motors corresponding to each other during a second period of time after the start-up, comprises:
acquiring second historical motor currents corresponding to the left cutting motor and the right cutting motor respectively in the second time period;
Comparing the motor current corresponding to the left cutting motor with a second historical motor current, and comparing the motor current corresponding to the right cutting motor with the second historical motor current to obtain a third comparison result;
and determining the working state of the cutting speed reducer according to the third comparison result.
6. The method of claim 5, wherein determining the operational state of the cutting reducer based on the third comparison result comprises:
if the third comparison result is: the motor current corresponding to the left cutting motor and the corresponding third historical motor current have larger and irregular differences, and the motor current corresponding to the right cutting motor and the corresponding third historical motor current have larger and irregular differences, so that the cutting speed reducer is determined to be in a fault state;
if the third comparison result is: and the motor current corresponding to the left cutting motor and the corresponding third historical motor current have smaller and regular differences, and the motor current corresponding to the right cutting motor and the corresponding third historical motor current have smaller and regular differences, so that the cutting speed reducer is determined to be in a normal working state.
7. The method of claim 1, wherein determining the operating states of the left torque shaft and the right torque shaft according to the motor currents of the left cutting motor and the right cutting motor respectively corresponding to a third time period after starting, comprises:
calculating a motor current average value according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a third time period after the left cutting motor and the right cutting motor are started;
comparing the motor current corresponding to the third time period after the left cutting motor is started with the motor current average value to obtain a fourth comparison result;
determining the working state of the left torque shaft according to the fourth comparison result;
comparing the motor current corresponding to the third time period after the right cutting motor is started with the motor current average value to obtain a fifth comparison result;
and determining the working states of the left torque shaft and the right torque shaft according to a fifth comparison result.
8. The method of claim 7, wherein determining the operating state of the left torque shaft based on the fourth comparison result comprises:
if the fourth comparison result is: the motor current corresponding to the left cutting motor is larger than the average value of the motor currents with preset multiples, and the left torque shaft is determined to be in a fault state;
If the fourth comparison result is: the motor current corresponding to the left cutting motor is smaller than or equal to the average value of the motor currents with preset multiples, and the left torque shaft is determined to be in a normal working state;
and determining the working states of the right torque shaft and the right torque shaft according to a fifth comparison result, wherein the working states comprise:
if the fifth comparison result is: the motor current corresponding to the right cutting motor is larger than the average value of the motor currents with preset times, and the right torque shaft is determined to be in a fault state;
if the fifth comparison result is: and if the motor current corresponding to the right cutting motor is smaller than or equal to the average value of the motor currents with preset multiples, determining that the right torque shaft is in a normal working state.
9. The method according to claim 1, wherein the method further comprises:
averaging the motor current of the left cutting motor and the motor current of the right cutting motor to obtain a real-time motor current average value;
according to the real-time motor current average value, adjusting quantitative parameters of the motor of the left cutting motor and the motor of the right cutting motor;
and controlling the working states of the motor of the left cutting motor and the motor of the right cutting motor according to the quantitative parameters.
10. A protection device for a mining apparatus, wherein the mining apparatus includes a left cutting unit mechanism and a right cutting unit mechanism and a cutting speed reducer, wherein the left cutting unit mechanism includes a left cutting motor, a left torque limiter, and a left torque shaft, the right cutting unit mechanism includes a right cutting motor, a right torque limiter, and a right torque shaft, comprising:
the device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring motor currents respectively corresponding to a first time period, a second time period and a third time period after the left cutting motor and the right cutting motor are started, the duration of the second time period is longer than that of the first time period, and the duration of the third time period is longer than that of the third time period;
the first determining module is used for determining the working states of the left moment limiter and the right moment limiter according to motor currents respectively corresponding to the left cutting motor and the right cutting motor in a first time period after the left cutting motor and the right cutting motor are started;
the second determining module is used for determining the working state of the cutting speed reducer according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a second time period after the left cutting motor and the right cutting motor are started;
and the third determining module is used for determining the working states of the left torque shaft and the right torque shaft according to the motor currents respectively corresponding to the left cutting motor and the right cutting motor in a third time period after the left cutting motor and the right cutting motor are started.
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