CN204400060U - Belt feeder transfer system - Google Patents
Belt feeder transfer system Download PDFInfo
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- CN204400060U CN204400060U CN201520026597.7U CN201520026597U CN204400060U CN 204400060 U CN204400060 U CN 204400060U CN 201520026597 U CN201520026597 U CN 201520026597U CN 204400060 U CN204400060 U CN 204400060U
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Abstract
The utility model provides a kind of belt feeder transfer system, comprises feeder, PLC technology case PLC, speed regulation device and feed belt machine; Feeder is connected with PLC, and PLC is connected with feed belt machine by speed regulation device; Feeder, for sending coal amount signal to PLC, coal amount signal is for identifying feeder coal-supplying amount hourly; PLC, for receiving coal amount signal, and determines to send speed-regulating instruction to speed regulation device with the coal amount threshold value preset according to the feeder coal-supplying amount hourly that coal amount signal identifies; Speed-regulating instruction is used to indicate speed regulation device and the transfer rate of feed belt machine is adjusted to target transfer rate; Speed regulation device, for being adjusted to target transfer rate according to speed-regulating instruction by the transfer rate of feed belt machine.The belt feeder transfer system that the utility model provides, can avoid feed belt machine to occur the unloaded situation transmitting the unnecessary mechanical wear produced because speed is too high, extend service life, reduce cost, save the power consumption of feed belt machine.
Description
Technical field
The utility model relates to colliery technology, particularly relates to a kind of belt feeder transfer system.
Background technology
In the process of coal mining, in bank, the coal of institute's extraction transports bank by feed belt machine, and in prior art, the coal of institute's extraction is transported bank by feed belt machine many employings constant speed that colliery uses or the mode of multistage speed control.
But in the coal production of reality, coal seam, most exploiting field skewness, every day, the coal mining output of each order of classes or grades at school was also unbalanced, thus caused the coal amount that feed belt machine is carried also to change thereupon.Adopt the feed belt machine of prior art, often cause the mechanical wear that feed belt machine is unnecessary, and a large amount of electric energy can be consumed.
Utility model content
The utility model provides a kind of belt feeder transfer system, the transfer rate of feed belt machine cannot be regulated according to the coal-supplying amount of feeder in order to solve feed belt machine of the prior art, when the coal-supplying amount of feeder is less than the operational throughput of feed belt machine, cause feed belt chance to occur unloaded situation about transmitting, make feed belt machine produce unnecessary mechanical wear, consume the technical matters of a large amount of electric energy.
The utility model provides a kind of belt feeder transfer system, comprising: feeder, PLC technology case PLC, speed regulation device and feed belt machine; Described feeder is connected with described PLC, and described PLC is connected with described feed belt machine by described speed regulation device;
Described feeder, for sending coal amount signal to described PLC, described coal amount signal is for identifying described feeder coal-supplying amount hourly;
Described PLC, for receiving described coal amount signal, and determines to send speed-regulating instruction to described speed regulation device with the coal amount threshold value preset according to the described feeder coal-supplying amount hourly that described coal amount signal identifies; Described speed-regulating instruction is used to indicate described speed regulation device and transfer rate current for described feed belt machine is adjusted to target transfer rate;
Described speed regulation device, for being adjusted to described target transfer rate according to described speed-regulating instruction by transfer rate current for described feed belt machine.
Further, described belt feeder transfer system also comprises: coal site sensor; Described coal site sensor is arranged on the top of described feed belt machine;
Described coal site sensor, for monitoring the height of the coal that described feed belt machine transmits, and sends to described PLC by the height of described coal;
Then described PLC, also for obtaining the current transfer rate of described feed belt machine, and according to the width of belt and the density of coal on the current transfer rate of the height of described coal, described feed belt machine, described feed belt machine, determine conveying coal amount hourly on described feed belt machine, and according to the size of conveying coal amount hourly on described feeder coal-supplying amount hourly and described feed belt machine, determine to send described speed-regulating instruction to described speed regulation device.
Further, described feed belt machine comprises motor;
Described PLC, also for monitoring the running current of described motor, and when determining that the running current of described motor exceedes default current threshold, sending to described speed regulation device and turning off instruction;
Described speed regulation device is also halted state for controlling described feed belt machine according to described shutoff instruction.
Further, described speed regulation device is frequency converter; Described speed-regulating instruction carries the target frequency of described frequency converter; The target frequency of described frequency converter is corresponding with the target transfer rate of described feed belt machine;
Described frequency converter, for the ongoing frequency of described frequency converter being adjusted to described target frequency according to described speed-regulating instruction, to be adjusted to described target transfer rate by transfer rate current for described feed belt machine.
Further, described PLC, also for obtaining the current transfer rate of described feed belt machine, is specially: described PLC, specifically for obtaining the ongoing frequency of described frequency converter, determine according to the ongoing frequency of described frequency converter the transfer rate that described feed belt machine is current.
The belt feeder transfer system that the utility model provides, coal-supplying amount hourly for feeder and the coal amount threshold value preset can compare by PLC, and transfer rate current to feed belt machine according to this adjusts timely, transfer rate after feed belt machine is adjusted is the transfer rate with feeder coal-supplying amount adaptation, that is, feed belt machine equals according to the transfer rate conveying hourly coal amount after adjustment or is tending towards feeder coal-supplying amount hourly, thus when avoiding feed belt machine conveying hourly coal amount to be greater than feeder coal-supplying amount hourly, because failing to adjust in time the transfer rate of feed belt machine, feed belt machine is made to occur the unloaded situation transmitting the unnecessary mechanical wear produced because transfer rate is too high, thus extend the service life of feed belt machine, reduce cost, save the power consumption of feed belt machine, further, relative to the feed belt machine of multistage speed of the prior art, need manual regulation transfer rate to make feed belt machine conveying hourly coal amount and feeder coal-supplying amount adaptation hourly, the belt feeder transfer system that the utility model embodiment provides can according to feeder coal-supplying amount hourly, determined by PLC and adjust the transfer rate of feed belt machine, do not need manual adjustment, make belt feeder transfer system conveying hourly coal amount and feeder coal-supplying amount hourly fit high, and the adjustment of transfer rate is more convenient and flexible, also reduce cost of labor simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model belt feeder transfer system embodiment one;
Fig. 2 is the structural representation of the utility model belt feeder transfer system embodiment two;
Fig. 3 is the structural representation of the utility model belt feeder transfer system embodiment three;
Fig. 4 is the structural representation of the utility model belt feeder transfer system embodiment four.
Description of reference numerals:
11: feeder; 12:PLC; 13: speed regulation device;
14: feed belt machine; 15: coal site sensor; 16: motor;
131: frequency converter.
Detailed description of the invention
Fig. 1 is the structural representation of the utility model belt feeder transfer system embodiment one.PLC) 12, speed regulation device 13 and feed belt machine 14 as shown in Figure 1, this belt feeder transfer system comprises: (Programmable LogicController, is called for short: for feeder 11, PLC technology case; Feeder 11 is connected with PLC12, and PLC12 is connected with feed belt machine 14 by speed regulation device 13.
Wherein, feeder 11, for sending coal amount signal to PLC12, coal amount signal is for identifying feeder 11 coal-supplying amount hourly; PLC12, for receiving coal amount signal, and determines to send speed-regulating instruction to speed regulation device 13 with the coal amount threshold value preset according to feeder 11 coal-supplying amount hourly that coal amount signal identifies; Speed-regulating instruction is used to indicate speed regulation device 13 and transfer rate current for feed belt machine 14 is adjusted to target transfer rate; Speed regulation device 13, for being adjusted to target transfer rate according to speed-regulating instruction by transfer rate current for feed belt machine 14.Wherein, above-mentioned PLC12 can realize determining speed-regulating instruction and send the PLC of arbitrary type of speed-regulating instruction, such as: mine explosion-suppression and intrinsic safety type PLC etc.Above-mentioned speed regulation device 13 is arbitrary speed regulation device that can realize adjusting the transfer rate of feed belt machine 14, such as: frequency converter, permanent-magnet speed governor, fluid coupling etc.
Concrete, the connection terminal of feeder 11 is connected with the input end of PLC12 by cable, the real-time or periodic transmission coal amount signal to PLC12, this coal amount signal identification feeder 11 coal-supplying amount hourly.Wherein, this coal amount signal can be analog signals, such as: size mark feeder 11 coal-supplying amount hourly adopting voltage or electric current.Take analog quantity as voltage be example, assuming that 1V analog quantity mark feeder 11 coal-supplying amount hourly preset is 10 tons, then when the coal amount signal that PLC12 receives feeder 11 transmission is 10V, feeder 11 coal-supplying amount hourly that PLC12 identifies according to the 1V analog quantity preset, feeder 11 coal-supplying amount hourly that the 10V calculating feeder 11 transmission that it receives identifies, in this citing, it is 100 tons that the coal amount signal 10V that PLC12 receives identifies feeder coal-supplying amount hourly.
After PLC12 receives the coal amount signal of feeder 11 transmission, by feeder 11 coal-supplying amount hourly that this coal amount signal identifies, compare with the coal amount threshold value preset; Wherein, the maximum delivery coal amount that the coal amount threshold value preset can be this belt feeder transfer system under specified most high transmission speed, can also be the threshold value preset according to use scenes, the utility model embodiment limit the set-up mode of the coal amount threshold value that this is preset and number range.
For the maximum delivery coal amount that the coal amount threshold value preset is this belt feeder transfer system under specified most high transmission speed, PLC12 determines to send speed-regulating instruction to speed regulation device 13 according to feeder 11 coal-supplying amount hourly and the coal amount threshold value preset, and specifically can be divided into following two kinds of situations:
The first: is if the coal-supplying amount hourly of coal amount signal determination feeder 11 that PLC12 sends according to feeder 11 is less than default coal amount threshold value, then PLC12 determines to send to speed regulation device 13 speed-regulating instruction transfer rate current for feed belt machine 14 being adjusted to target transfer rate, wherein, this speed-regulating instruction can be analog quantity (such as: voltage, electric current etc.) instruction, it is the example of analog quantity that specific implementation can send coal amount signal with reference to above-mentioned feeder 11 to PLC12, repeats no longer one by one herein.Above-mentioned target transfer rate V
targetcan according to the coal-supplying amount Q hourly of feeder 11
givewith the coal amount threshold value Q preset
presetratio, be multiplied by the specified most high transmission speed V of default feed belt machine 14
maxcalculate gained, wherein, this target transfer rate V
targetfor the coal-supplying amount Q hourly with feeder 11
giveadaptive transfer rate, concrete formula is as follows:
The second: if the coal-supplying amount hourly of coal amount signal determination feeder 11 that PLC12 sends according to feeder 11 is more than or equal to default coal amount threshold value, namely the coal-supplying amount hourly of feeder 11 is more than or equal to the maximum delivery coal amount of belt feeder transfer system under specified most high transmission speed, then PLC12 determines to send to speed regulation device 13 speed-regulating instruction transfer rate current for feed belt machine 14 being adjusted to target transfer rate, wherein, this target transfer rate equals the specified most high transmission speed of this belt feeder transfer system, namely when the coal-supplying amount hourly of feeder 11 is more than or equal to default coal amount threshold value, feed belt machine 14 transmits with specified most high transmission speed, this specified most high transmission speed is the transfer rate with current feeder 11 coal-supplying amount adaptation hourly.
After speed regulation device 13 receives the speed-regulating instruction of above-mentioned PLC12 transmission, the target transfer rate of adjustment is needed according to the feed belt machine 14 carried in this speed-regulating instruction, transfer rate current for feed belt machine 14 is adjusted to target transfer rate, to make this belt feeder transfer system transmit coal according to the transfer rate of the coal-supplying amount adaptation with feeder, and then conveying coal amount hourly on feed belt machine 14 is made to equal or be tending towards feeder coal-supplying amount hourly.
Optionally, in another kind of implementation, PLC12 can after determining that feed belt machine 14 needs the target transfer rate of adjustment by the way, the current transfer rate of feed belt machine 14 is obtained by speed regulation device 13, and this target transfer rate and the current transfer rate of feed belt machine 14 are compared, if when the PLC12 transfer rate current according to feed belt machine 14 determines that this target transfer rate transfer rate current with feed belt machine 14 is consistent, then PLC12 determines to send empty speed-regulating instruction to speed regulation device 13 or represent the speed-regulating instruction not adjusting transfer rate, certainly, PLC12 also can not send speed-regulating instruction to speed regulation device 13.
The belt feeder transfer system that the utility model provides, coal-supplying amount hourly for feeder and the coal amount threshold value preset can compare by PLC, and transfer rate current to feed belt machine according to this adjusts timely, transfer rate after feed belt machine is adjusted is the transfer rate with feeder coal-supplying amount adaptation, that is, feed belt machine equals according to the transfer rate conveying hourly coal amount after adjustment or is tending towards feeder coal-supplying amount hourly, thus avoid when feed belt machine conveying hourly coal amount is greater than feeder coal-supplying amount hourly, because failing to adjust in time the transfer rate of feed belt machine, feed belt machine is made to occur the unloaded situation transmitting the unnecessary mechanical wear produced because transfer rate is too high, thus extend the service life of feed belt machine, reduce cost, save the power consumption of feed belt machine.Further, relative to the feed belt machine of multistage speed of the prior art, need manual regulation transfer rate to make feed belt machine conveying hourly coal amount and feeder coal-supplying amount adaptation hourly, the belt feeder transfer system that the utility model embodiment provides can according to feeder coal-supplying amount hourly, determined by PLC and adjust the transfer rate of feed belt machine, do not need manual adjustment, make belt feeder transfer system conveying hourly coal amount and feeder coal-supplying amount hourly fit high, and the adjustment of transfer rate is more convenient and flexible, also reduce cost of labor simultaneously.
Further, on above-mentioned basis embodiment illustrated in fig. 1, the structural representation of the belt feeder transfer system embodiment two that the utility model embodiment shown in Figure 2 provides.As shown in Figure 2, above-mentioned belt feeder transfer system can also comprise: coal site sensor 15; Coal site sensor 15 is arranged on the top of feed belt machine 14; Coal site sensor 15, for monitoring the height of the coal that feed belt machine 14 transmits, and sends to PLC12 by the height of coal; Then PLC12, also for obtaining the current transfer rate of feed belt machine 14, and according to the width of belt and the density of coal on the current transfer rate of the height of coal, feed belt machine 14, feed belt machine 14, determine conveying coal amount hourly on feed belt machine 14, and according to the size of conveying coal amount hourly on feeder 11 coal-supplying amount hourly and feed belt machine 14, determine to send speed-regulating instruction to speed regulation device 13.
Concrete, coal site sensor 15 is can realize monitoring arbitrary sensor that the height of delivering coal uploaded by feed belt machine 14, such as: laser coal site sensor, ultrasonic coal level sensor, weight dropper charge level indicator etc.Wherein, coal site sensor 15 is arranged on the top of feed belt machine 14, the utility model embodiment is arranged on the top of feed belt machine 14 specific implementation to coal site sensor 15 is not specifically limited, for above-mentioned belt feeder conveyor system applications in bank, this coal site sensor 15 hangs any position higher than the highest coal position that feed belt machine 14 is estimated, as this coal site sensor 15 can to hang on above feed belt machine 14 corresponding, higher than any position of the U-shaped canopy of the highest coal position that feed belt machine 14 transmits; Also can be arranged in parallel along feed belt machine 14 direction of transfer or along feed belt machine 14 belt width direction, higher than arbitrary height feed belt machine 14 transmitting the highest coal position a crossbeam above feed belt machine 14, coal site sensor hung on any position on this crossbeam.
Above-mentioned coal site sensor 15 can be real-time or periodically the height of the coal that feed belt machine 14 transmits is monitored, and the current feed belt machine 14 of being monitored sends to PLC12 with the height of the coal in the vertical corresponding cross section of coal site sensor 15.Wherein, the height of coal can be sent to PLC12 with the representation of analog quantity (such as: voltage, electric current etc.) by coal site sensor 15, it is the example of analog quantity that specific implementation can send coal amount signal with reference to above-mentioned feeder 11 to PLC12, repeats no longer one by one herein.
PLC12 can after the height receiving the coal that above-mentioned coal site sensor 15 sends, obtain the transfer rate that feed belt machine 14 is current, optionally, the present speed of feed belt machine can be obtained by obtaining the corresponding correlation parameter of transfer rate current with feed belt machine 14 in speed regulation device; Take speed regulation device as frequency converter be example, then the parameter that current to feed belt machine 14 in above-mentioned speed regulation device transfer rate is relevant can be the ongoing frequency of frequency converter; The correlation parameter wherein obtained can adopt the representation of analog quantity to represent the size of correlation parameter, and it is the example of analog quantity that specific implementation can send coal amount signal with reference to above-mentioned feeder 11 to PLC12, repeats no longer one by one herein.PLC12 by the corresponding relation of the current transfer rate of this correlation parameter and feed belt machine 14, the transfer rate that acquisition feed belt machine 14 is current.
PLC12, after the transfer rate that the height and feed belt machine 14 that get coal are current, in conjunction with the width of belt on feed belt machine 14 and the density of coal, determines conveying coal amount Q hourly on feed belt machine 14
conveying; Wherein, on feed belt machine 14, the width of belt and the density of coal can be preset in PLC12.
Exemplary, assuming that the unit of the height H of coal is rice, the unit of the transfer rate V that feed belt machine 14 is current is rice/per hour, on feed belt machine 14, the unit of the width W of belt is rice, the unit of the density p of coal is kilogram/every cubic meter, on the feed belt machine 14 that then PLC12 determines, conveying coal amount hourly can be long-pending for the density of the width of belt on the current transfer rate of the height of coal, feed belt machine 14, feed belt machine 14, coal, and concrete formula is as follows:
Q
conveying=H*W* ρ * V (2)
PLC12, according to the size of conveying coal amount hourly on feeder 11 coal-supplying amount hourly and the feed belt machine 14 determined by the way, determines to send speed-regulating instruction to speed regulation device 13, specifically can be divided into following three kinds of situations:
The first: is if PLC12 determines that feeder 11 coal-supplying amount hourly is less than conveying coal amount hourly on feed belt machine 14, then PLC12 determines to send to speed regulation device 13 speed-regulating instruction transfer rate of feed belt machine 14 being adjusted to target transfer rate, this target transfer rate can according to the ratio of conveying coal amount hourly on the coal-supplying amount hourly of feeder 11 and feed belt machine 14, be multiplied by the current transfer rate of feed belt machine 14 and calculate gained, concrete formula can the account form of reference formula 1, repeats no longer one by one herein.Wherein, this target transfer rate is the transfer rate with the coal-supplying amount adaptation hourly of feeder 11.
The second: if PLC12 determines that feeder 11 coal-supplying amount hourly is greater than conveying coal amount hourly on feed belt machine 14, then coal-supplying amount hourly for feeder 11 and the coal amount threshold value preset can first compare by PLC12, wherein, herein preset coal amount threshold value can with reference to the above-mentioned relevant explanation to coal amount threshold value, maximum delivery coal amount so that the coal amount threshold value preset is this belt feeder transfer system under specified most high transmission speed: (namely the coal-supplying amount hourly of feeder 11 is not only greater than the current conveying coal amount hourly of feed belt machine 14 if PLC12 determines to be more than or equal to default coal amount threshold value by feeder 11 coal-supplying amount hourly, also the maximum delivery coal amount of belt feeder transfer system under specified most high transmission speed is more than or equal to), then PLC12 determines to send to speed regulation device 13 speed-regulating instruction transfer rate current for feed belt machine 14 being adjusted to target transfer rate, wherein, this target transfer rate equals the specified most high transmission speed of this belt feeder transfer system, namely when the coal-supplying amount hourly of feeder 11 is more than or equal to default coal amount threshold value, feed belt machine 14 transmits with specified most high transmission speed, this specified most high transmission speed is the transfer rate with current feeder 11 coal-supplying amount adaptation hourly, if PLC12 determines to be less than default coal amount threshold value by feeder 11 coal-supplying amount hourly, (namely the coal-supplying amount hourly of feeder 11 is greater than the current conveying coal amount hourly of feed belt machine 14, and be less than the maximum delivery coal amount of belt feeder transfer system under specified most high transmission speed), then PLC12 determines to send to speed regulation device 13 speed-regulating instruction transfer rate of feed belt machine 14 being adjusted to target transfer rate, this target transfer rate can according to the ratio of conveying coal amount hourly on the coal-supplying amount hourly of feeder 11 and feed belt machine 14, be multiplied by the current transfer rate of feed belt machine 14 and calculate gained, concrete formula can the account form of reference formula 1, repeat no longer one by one herein, wherein, this target transfer rate is the transfer rate with the coal-supplying amount adaptation hourly of feeder 11.
Optionally, in another kind of implementation, when PLC12 determines that feeder 11 coal-supplying amount hourly is greater than conveying coal amount hourly on feed belt machine 14, then PLC12 determines to send to speed regulation device 13 speed-regulating instruction transfer rate current for feed belt machine 14 being adjusted to target transfer rate, simultaneously the specified most high transmission speed according to the target transfer rate adopting above-mentioned account form to determine and this belt feeder transfer system compares by PLC12, if when this target transfer rate determined is greater than default specified most high transmission speed, then PLC12 to determine to send in the speed-regulating instruction of speed regulation device 13 entrained target transfer rate to be specified most high transmission speed.
The third: is if PLC12 determines that feeder 11 coal-supplying amount hourly equals conveying coal amount hourly on feed belt machine 14, then PLC12 determines to send empty speed-regulating instruction to speed regulation device 13 or represent the speed-regulating instruction not adjusting transfer rate, certainly, PLC12 also can not send speed-regulating instruction to speed regulation device 13.Wherein, the transfer rate that this feed belt machine 14 is current is the transfer rate with the coal-supplying amount adaptation hourly of feeder 11.
After above-mentioned speed regulation device 13 receives the speed-regulating instruction of above-mentioned PLC12 transmission, the target transfer rate of adjustment is needed according to the feed belt machine 14 carried in this speed-regulating instruction, transfer rate current for feed belt machine 14 is adjusted to target transfer rate, to make this belt feeder transfer system transmit coal amount according to the transfer rate of the coal-supplying amount adaptation with feeder, and then conveying coal amount hourly on feed belt machine 14 is made to equal or be tending towards feeder coal-supplying amount hourly.
The belt feeder transfer system that the utility model provides, the hourly carry coal amount of coal-supplying amount hourly for feeder with the feed belt machine determined can compare by PLC, therefore PLC can the transfer rate current to feed belt machine carry out more accurately and timely adjusting, transfer rate after feed belt machine is adjusted is the transfer rate with the coal-supplying amount adaptation of feeder, that is feed belt machine equals according to the transfer rate conveying hourly coal amount after adjustment or is tending towards feeder coal-supplying amount hourly, thus when avoiding conveying coal amount hourly on feed belt machine to be greater than feeder coal-supplying amount hourly, because failing to adjust in time the transfer rate of feed belt machine, feed belt machine is made to occur the unloaded situation transmitting the unnecessary mechanical wear produced because transfer rate is too high, thus extend the service life of feed belt machine, reduce cost, save the power consumption of feed belt machine.Further, relative to the feed belt machine of multistage speed of the prior art, need manual regulation transfer rate to make feed belt machine conveying hourly coal amount and feeder coal-supplying amount adaptation hourly, the belt feeder transfer system that the utility model embodiment provides can according to feeder coal-supplying amount hourly, determined by PLC and adjust the transfer rate of feed belt machine, do not need manual adjustment, make belt feeder transfer system conveying hourly coal amount and feeder coal-supplying amount hourly fit high, and the adjustment of transfer rate is more convenient and flexible, also reduce cost of labor simultaneously.
Further, on above-mentioned basis embodiment illustrated in fig. 2, the structural representation of the belt feeder transfer system embodiment three that the utility model embodiment shown in Figure 3 provides.As shown in Figure 3, above-mentioned feed belt machine 14 comprises motor 16; PLC12, also for monitoring the running current of motor 16, and when determining that the running current of motor 16 exceedes default current threshold, sending to speed regulation device 13 and turning off instruction; Speed regulation device 13 is also halted state for controlling feed belt machine 14 according to shutoff instruction.
Concrete, above-mentioned motor 16 can being with the built-in motor of feed belt machine 14 one, can also being the motor of individualism, for starting or stoping feed belt machine.Shown in Fig. 3 is the schematic diagram that motor and the split of feed belt machine are arranged.The input end of PLC12 can by the outlet terminal sub-connection of cable and speed regulation device 13 control loop, the running current of the motor 16 of monitoring speed regulation device 13 Real-time Obtaining, and the running current of monitored motor 16 and the current threshold preset are compared, wherein, the running current of the motor 16 of above-mentioned monitoring can adopt the representation of analog quantity to represent the size of running current; Simultaneously, above-mentioned default current threshold can be that this belt feeder transfer system allows the maximum amount of normal work to determine electric current, can also be the current threshold preset according to actual working environment, the utility model embodiment limit the set-up mode of the current threshold that this is preset and number range.
If when PLC12 determines that the running current of motor 16 exceedes default current threshold, then PLC12 sends to speed regulation device 13 and turns off instruction, and wherein, this shutoff instruction can be on-off model (such as: 1 expression switches on power, and 0 represents power cutoff).Speed regulation device 13 is after the shutoff instruction receiving PLC12 transmission, according to the power remove of this shutoff instruction by the motor 16 of feed belt machine 14, make the motor 16 of feed belt machine 14 be in out-of-work state, and then make feed belt machine 14 be in out-of-work state.
Optionally, in another kind of implementation, when PLC12 determines that the running current of motor 16 exceedes default current threshold, PLC12 can also by turning off the power supply of speed regulation device 13, quit work to make speed regulation device 13, thus the motor 16 of feed belt machine 14 is also quit work, and then feed belt machine 14 is made to be in out-of-work state.
The belt feeder transfer system that the utility model provides, by the running current of PLC Real-Time Monitoring motor, to make when the running current of motor exceedes default current threshold, PLC can send timely and turn off instruction to close the power supply of the motor of feed belt machine, and then make feed belt machine be in out-of-work state, avoid occurring the too high situation causing the burn-down of electric motor of feed belt machine of running current, ensure that the safety of feed belt machine, and then ensured the service life of feed belt machine, reduce cost.
The structural representation of the belt feeder transfer system embodiment four that Fig. 4 provides for the utility model embodiment, the present embodiment by being provided a kind of preferred embodiment on above-mentioned basis embodiment illustrated in fig. 3, as shown in Figure 4, in the preferred embodiment, the speed regulation device 13 in above-mentioned belt feeder transfer system is specially frequency converter 131.Above-mentioned speed-regulating instruction carries the target frequency of frequency converter 131, and the target frequency of frequency converter 131 is corresponding with the target transfer rate of feed belt machine 14; Then above-mentioned PLC12, specifically for obtaining the ongoing frequency of frequency converter 131, the transfer rate current according to the ongoing frequency determination feed belt machine 14 of frequency converter 131; Frequency converter 131, for the ongoing frequency of frequency converter 131 being adjusted to target frequency according to speed-regulating instruction, to be adjusted to target transfer rate by transfer rate current for feed belt machine 14.
Concrete, PLC12 can by the cable of the outlet terminal sub-connection with frequency converter 131 control loop, obtain the ongoing frequency of frequency converter 131, the ongoing frequency of the frequency converter 131 wherein obtained can adopt the representation of analog quantity to represent the size of the ongoing frequency of frequency converter 131, it is the example of analog quantity that specific implementation can send coal amount signal with reference to above-mentioned feeder 11 to PLC12, repeats no longer one by one herein.After above-mentioned PLC12 gets the ongoing frequency of frequency converter 131, according to following formula, the current transfer rate V of feed belt machine 14 can be determined, specific as follows:
Wherein, P is the magnetic pole logarithm of motor 16, r is the radius of feed belt machine 14 cylinder.
After PLC12 determines the current transfer rate of feed belt machine 14 by above-mentioned formula 3, the method described in above-described embodiment two can be adopted, determine conveying coal amount hourly on feed belt machine 14, according to the size of conveying coal amount hourly on feeder 11 coal-supplying amount hourly and the feed belt machine 14 determined, the target transfer rate of feed belt machine 14 can be determined to make PLC12.
Afterwards, PLC12 is according to target transfer rate V
target, the magnetic pole logarithm P of motor 16, the radius roller r of feed belt machine 14 determine the target frequency F of frequency converter 131
targetwherein, the target frequency of frequency converter 131 is corresponding with the target transfer rate of feed belt machine 14, when the target transfer rate of feed belt machine 14 increases, the target frequency also corresponding increase of frequency converter 131, an i.e. corresponding target frequency of target transfer rate, and this target frequency is the frequency with the coal-supplying amount adaptation hourly of feeder 11.Specific formula for calculation is as follows:
After PLC12 determines the target frequency of frequency converter 131 according to above-mentioned formula 3, PLC12 transmission carries the speed-regulating instruction of the target frequency of frequency converter 131 to frequency converter 131.Frequency converter 131 is after the speed-regulating instruction receiving PLC12 transmission, according to this speed-regulating instruction, its current electric voltage frequency powering to the motor 16 of feed belt machine 14 is adjusted to target frequency, its rotating speed is adjusted according to the target frequency that frequency converter 131 provides to make the motor 16 of feed belt machine 14, and then make the current transfer rate of feed belt machine 14 be adjusted to target transfer rate, with the coal-supplying amount of adaptive feeder 11.
The belt feeder transfer system that the utility model provides, PLC can be current according to the ongoing frequency determination feed belt machine of frequency converter transfer rate, the size between the carry coal amount hourly of feed belt machine and the coal-supplying amount hourly of feeder is determined with this, therefore PLC can the transfer rate current to feed belt machine carry out more accurately and timely adjusting, transfer rate after feed belt machine is adjusted is the transfer rate with the coal-supplying amount adaptation of feeder, that is, feed belt machine equals according to the transfer rate conveying hourly coal amount after adjustment or is tending towards feeder coal-supplying amount hourly, thus when avoiding conveying coal amount hourly on feed belt machine to be greater than feeder coal-supplying amount hourly, because failing to adjust in time the transfer rate of feed belt machine, make the transfer rate of feed belt machine too high and occur the unloaded situation transmitting the unnecessary mechanical wear produced, thus extend the service life of feed belt machine, reduce cost, save the power consumption of feed belt machine.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (5)
1. a belt feeder transfer system, is characterized in that, comprising: feeder, PLC technology case PLC, speed regulation device and feed belt machine; Described feeder is connected with described PLC, and described PLC is connected with described feed belt machine by described speed regulation device;
Described feeder, for sending coal amount signal to described PLC, described coal amount signal is for identifying described feeder coal-supplying amount hourly;
Described PLC, for receiving described coal amount signal, and determines to send speed-regulating instruction to described speed regulation device with the coal amount threshold value preset according to the described feeder coal-supplying amount hourly that described coal amount signal identifies; Described speed-regulating instruction is used to indicate described speed regulation device and transfer rate current for described feed belt machine is adjusted to target transfer rate;
Described speed regulation device, for being adjusted to described target transfer rate according to described speed-regulating instruction by transfer rate current for described feed belt machine.
2. belt feeder transfer system according to claim 1, is characterized in that, described belt feeder transfer system also comprises: coal site sensor; Described coal site sensor is arranged on the top of described feed belt machine;
Described coal site sensor, for monitoring the height of the coal that described feed belt machine transmits, and sends to described PLC by the height of described coal;
Then described PLC, also for obtaining the current transfer rate of described feed belt machine, and according to the width of belt and the density of coal on the current transfer rate of the height of described coal, described feed belt machine, described feed belt machine, determine conveying coal amount hourly on described feed belt machine, and according to the size of conveying coal amount hourly on described feeder coal-supplying amount hourly and described feed belt machine, determine to send described speed-regulating instruction to described speed regulation device.
3. belt feeder transfer system according to claim 2, is characterized in that, described feed belt machine comprises motor;
Described PLC, also for monitoring the running current of described motor, and when determining that the running current of described motor exceedes default current threshold, sending to described speed regulation device and turning off instruction;
Described speed regulation device is also halted state for controlling described feed belt machine according to described shutoff instruction.
4. the belt feeder transfer system according to Claims 2 or 3, is characterized in that, described speed regulation device is frequency converter; Described speed-regulating instruction carries the target frequency of described frequency converter; The target frequency of described frequency converter is corresponding with the target transfer rate of described feed belt machine;
Described frequency converter, for the ongoing frequency of described frequency converter being adjusted to described target frequency according to described speed-regulating instruction, to be adjusted to described target transfer rate by transfer rate current for described feed belt machine.
5. belt feeder transfer system according to claim 4, is characterized in that, described PLC, also for obtaining the current transfer rate of described feed belt machine, is specially:
Described PLC, specifically for obtaining the ongoing frequency of described frequency converter, determines according to the ongoing frequency of described frequency converter the transfer rate that described feed belt machine is current.
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| CN201520026597.7U CN204400060U (en) | 2015-01-14 | 2015-01-14 | Belt feeder transfer system |
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| CN105217271A (en) * | 2015-08-31 | 2016-01-06 | 西安华光信息技术有限责任公司 | Based on the self-adaptation control method of the belt transportation system of video identification |
| CN105858132A (en) * | 2016-05-12 | 2016-08-17 | 天地（常州）自动化股份有限公司 | Coal flow conveying system with conveyor load distribution detection function and energy-saving control method of coal flow conveying system |
| CN106743339A (en) * | 2016-12-08 | 2017-05-31 | 中国神华能源股份有限公司 | A kind of method and apparatus for automatically adjusting adhesive tape conveyor speed |
| CN108680921A (en) * | 2018-03-09 | 2018-10-19 | 江苏师范大学 | Belt feeder carrys out coal signal generating apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217271A (en) * | 2015-08-31 | 2016-01-06 | 西安华光信息技术有限责任公司 | Based on the self-adaptation control method of the belt transportation system of video identification |
| CN105217271B (en) * | 2015-08-31 | 2017-09-01 | 西安华光信息技术有限责任公司 | The self-adaptation control method of belt transportation system based on video identification |
| CN105858132A (en) * | 2016-05-12 | 2016-08-17 | 天地（常州）自动化股份有限公司 | Coal flow conveying system with conveyor load distribution detection function and energy-saving control method of coal flow conveying system |
| CN106743339A (en) * | 2016-12-08 | 2017-05-31 | 中国神华能源股份有限公司 | A kind of method and apparatus for automatically adjusting adhesive tape conveyor speed |
| CN108680921A (en) * | 2018-03-09 | 2018-10-19 | 江苏师范大学 | Belt feeder carrys out coal signal generating apparatus |
| CN110040472A (en) * | 2019-04-25 | 2019-07-23 | 连云港天明装备有限公司 | A kind of fully-mechanized mining working frequency conversion scratch board conveyor automatic speed governing device and its method |
| CN112691784A (en) * | 2020-12-29 | 2021-04-23 | 锡林郭勒热电有限责任公司 | Coal mill rotating speed control method and device and electronic equipment |
| CN115281365A (en) * | 2022-08-02 | 2022-11-04 | 厦门烟草工业有限责任公司 | Sundry detection system and sundry detection method |
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