CN107814219B - Automatic feeding system and feeding method for dumper operation - Google Patents
Automatic feeding system and feeding method for dumper operation Download PDFInfo
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- CN107814219B CN107814219B CN201711032519.8A CN201711032519A CN107814219B CN 107814219 B CN107814219 B CN 107814219B CN 201711032519 A CN201711032519 A CN 201711032519A CN 107814219 B CN107814219 B CN 107814219B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G67/00—Loading or unloading vehicles
- B65G67/02—Loading or unloading land vehicles
- B65G67/24—Unloading land vehicles
- B65G67/32—Unloading land vehicles using fixed tipping installations
- B65G67/48—Vehicle tipplers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
A system for automatically feeding in operation of a car dumper and a control method thereof belong to the technical field of car dumpers and are used for automatizing hopper coal output control in the automatic operation process of the car dumper. The technical proposal is as follows: the system adopts a novel installation mode of the material level detection probe to ensure the accuracy of data measurement and plan the measurement data according to the system requirement. And considering that the feeding characteristics of different coals are different, the system establishes a feeding model for the different coals, and resets the feeding parameters for each train coal flow. Meanwhile, the original belt scale system is utilized to respectively adjust the total feeding amount and the single hopper feeding amount, so that the positions of the coal materials of each hopper are in the normal positions under the premise of ensuring the total feeding amount to be unchanged. Finally, through establishing an interface program and a man-machine interaction interface of an automatic feeding and automatic turning operation system, the combination of the two systems is completed, and the two systems are mutually controlled and restricted, so that the stability and the safety of automatic operation are improved.
Description
Technical Field
The invention relates to a system and a method for automatic feeding in operation of a car dumper, and belongs to the technical field of car dumper equipment.
Background
Most links of the operation of the existing company dumper are higher in automation, but the situation that the departments intervene manually exists, and the full-automatic operation of the whole process is still further improved. In automatic operation, an entrance driver is required to observe the hopper material level to inform a main operator, and the main operator adjusts the frequency of the feeder to control feeding. Meanwhile, as the material level conditions of the hoppers are judged by people, the characteristics of the dumped coal are different, so that a master operator cannot accurately adjust the frequency of the feeders according to experience, and the hopper level is too low or too high or even an empty hopper is caused in the feeding process frequently, so that the automatic operation stops feeding actions or stops dumping actions and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an automatic feeding system which can be used for avoiding the participation of personnel in the process of the rollover operation
The technical scheme for solving the technical problems is as follows:
a system for automatic feeding in car dumper operation is composed of hopper level detector, PLC network module, PLC control module, belt balance measuring system and man-machine interface.
The funnel material level detection device consists of a material level platform bracket and a detection unit; the platform support is utilized to enable the detection opening of the detection unit to be perpendicular to the center of the grate opening of the tilting side hopper of the car dumper, and the installation position of the detection unit avoids the impact position of coal in the process of dumping, so that accurate measurement is ensured, and the interference of the hopper grate of the car dumper on the detection result is avoided.
The PLC network module comprises a remote I/O transmission module, and the remote I/O transmission module transmits data measured by the funnel material level detection device and the belt scale system to the PLC control module in the form of analog signals or digital signals.
The PLC control module is pre-stored with a coal feeding model, and can calibrate the whole feeding amount and the individual hopper material level, so that automatic feeding and automatic dumping operation are realized, and automatic feeding control in the automatic dumping operation process is realized.
The belt scale system is a national standard scale measuring system.
The man-machine interaction interface is provided with a display device and a man-machine dialogue window, an input device capable of manually inputting the total flow of automatic feeding and a switch for starting the automatic feeding system.
The dumper hopper is made of a metal material, the side wall of the hopper is provided with two vertical holes extending in the height direction, the two vertical holes are opposite, and the vertical holes are blocked by a rubber material; the outer sides of the vertical holes are respectively provided with a ray emitting device and a ray detecting device, and the ray emitting device is provided with a ray source, a fan-shaped collimator and a rotary barrel with a plurality of alignment holes; the rays pass through the ray source, the fan-shaped collimator, the collimating aperture on the rotary barrel, the first vertical aperture, the materials and the second vertical aperture in sequence; the ray passes through the ray source, the fan-shaped collimator and the collimation holes on the rotary barrel to form scanning ray beams to detect the ray in the hopper, and the ray passes through the ray source, the fan-shaped collimator, the collimation holes on the rotary barrel, the first vertical holes, the materials, the second vertical holes and the ray detection device to detect the ray of the material level in the hopper, and the hopper material level detection device and the ray detection device are used for jointly detecting the material level of the hopper.
A method for automatic feeding for a dumper operation using the above system, comprising the steps of:
the detection unit is arranged on the material level platform bracket; connecting the automatic rollover operation system with a man-machine interaction interface of an automatic feeding system to control and restrict the man-machine interaction interface so as to improve the stability and safety of the automatic operation;
according to different feeding characteristics of different coal types, establishing independent feeding models for the different coal types in an automatic feeding system, and setting independent feeding parameters for each coal type;
the overall feeding amount and the single hopper feeding amount are respectively regulated by utilizing the belt scale system, so that the position of each hopper coal is in a normal position under the premise of ensuring the overall feeding amount to be unchanged.
The material level platform support adopts an inverted L-shaped design and triangle fixed form for the overall structure, and comprises a platform support and a detection unit fixing seat, wherein the platform support is provided with a slide way, the platform support and the detection unit fixing seat are respectively assembled and connected in the form of the slide way, and a pull rod is arranged to enable maintenance personnel to control the detection unit fixing seat to walk in the slide way through traction of the detection unit fixing seat.
The funnel material level detection step establishes 5 measuring points; ultra-high level of material level: the material level of the hopper has affected the position of the dumper for overturning; level up-conversion bit: the storage of the hopper is too many positions in which the feeding capacity of the hopper needs to be improved; material level frequency-reducing position: the position of the funnel with too little stock and the need of reducing the feeding capacity of the funnel; ultra-low level of material level: the stock of the hopper has affected the position where the overall feeding needs to stop the feeding action of the hopper; empty fill level of material level: the position where the stock of the hopper is already zero;
the feeding model is established as follows: measuring feeding data of common coal in each funnel, and measuring the stock quantity of each funnel, the feeding quantity of each variable frequency feeding motor in each funnel and the feeding lifting quantity corresponding to each lifting of each variable frequency feeding motor in each funnel by 1HZ after one operation cycle; calculating the total feeding amount based on the feeding frequency of the variable frequency feeding motor of each hopper, and timing the feeding amount of each hopper; when a new model is built, each funnel is firstly set to feed at a fixed frequency, and the measured data of the belt scale is compared with the data of the known model to obtain the proportion of the feeding amount of the variable frequency feeding motor in each funnel of the coal variety to the feeding amount of the variable frequency feeding motor in each funnel of the known model; when a new coal type works, the feeding lifting quantity corresponding to each hopper variable frequency feeding motor per lifting 1HZ corresponding to the coal type is calculated according to the ratio of the feeding quantity of each hopper variable frequency feeding motor in the coal type to the feeding quantity of each hopper variable frequency feeding motor in a known model, and the feeding frequency of each hopper variable frequency feeding motor of the new coal type is calculated according to the calculation result.
The overall feed amount is adjusted as follows: acquiring the feeding frequency of each funnel variable frequency feeding motor of the current automatic feeding, calculating the current total feeding amount according to a model, wherein the total feeding amount is the sum of the feeding amounts of the variable frequency feeding motors in each funnel, comparing the total feeding amount with the preset feeding amount, and adjusting the feeding system to adjust the frequency of all the working feeding motors when the difference value is larger than the feeding lifting amount corresponding to the feeding frequency lifting 1HZ of all the funnel variable frequency feeding motors; the overall feeding amount is ensured to be equal to the preset feeding amount in the automatic feeding process.
The single bucket feeding amount is adjusted as follows: obtaining a feeding lifting amount corresponding to lifting of 1HZ of each funnel variable frequency feeding motor of a corresponding coal type according to the model, and detecting the position of each funnel stock measured by a current material level detection device; the feeding frequency of each funnel and other funnels is adjusted according to the material level stock condition and the total feeding quantity condition of each funnel; the method comprises the following steps: firstly, calculating an adjustment value of the overall feeding quantity after adjustment corresponding to all funnels except a certain specific funnel, namely the frequency-increasing 1HZ or the frequency-decreasing 1HZ, and then calculating the feeding frequency which needs to be adjusted in order to offset the adjustment value of the fixed specific funnel; when the coal stock of the hopper is at the material level frequency-raising position for 1-5 minutes, the feeding frequency of the hopper is adjusted once, the adjustment value is the feeding frequency value which the hopper should be adjusted, and simultaneously, each hopper is subjected to frequency-lowering adjustment once, and the adjustment value is 1; when the coal stock of the hopper is at the frequency-reducing position for 1-5 minutes, the feeding frequency of the hopper is subjected to frequency-reducing adjustment once, the adjustment value of the frequency-reducing adjustment is the feeding frequency value which the hopper needs to be adjusted, and each hopper is subjected to frequency-increasing adjustment once, and the adjustment value is 1.
The automatic feeding is connected with an automatic rollover operation system; after confirming the set value of the rated feeding amount, the automatic feeding system side allows starting only after obtaining the starting signal of the corresponding belt conveyor; after the automatic feeding system is started, controlling a hopper gate of the car dumper to conduct opening action, wherein the hopper can participate in the automatic feeding system after the hopper gate is opened; when the storage of the funnel coal is in the 'super-high position', the dumper is forbidden to continue dumping the coal, and when the storage of the funnel coal is not in the 'super-high position', the dumper can continue dumping the coal; when the coal stock of the funnel is in the ultra-low position, the feeding motor of the funnel is forbidden to continue to act, and when the coal stock of the funnel is not in the ultra-low position, the feeding motor can continue to feed; when the measured value of the belt scale system is higher than the set value and lasts for 1-5 minutes, the automatic feeding system is stopped, and the man-machine interaction interface is controlled to report errors.
The beneficial effects of the invention are as follows:
the automatic feeding system for the dumper operation can directly remove the functions of observing the hopper material level of an inlet dumper driver and adjusting the feeding frequency of a main console dumper driver, can reasonably optimize the post fitter structure and reduces the labor cost; avoid the occurrence of accidents such as collision of the car dumper due to overhigh material level of the hopper, large coal head due to the empty hopper, and the like. The electric energy cost is saved, and the operation efficiency and the automation degree of the port are improved.
Drawings
FIG. 1 is a schematic diagram of a material level detecting device bracket;
FIG. 2 is a diagram illustrating an exemplary portion of a logic program 1 funnel level detection data plan;
FIG. 3 is a diagram illustrating a portion of a different coal feed model for logic program 2;
FIG. 4 is a diagram illustrating an example of a bulk feed calibration portion of logic program 3;
FIG. 5 logic program 4 is an exemplary diagram of an individual funnel level calibration portion;
FIG. 6 is a diagram of an exemplary portion of the logic program 5 auto-feed and auto-rollover OS interface program.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 6 of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.
Example 1
A system for automatic feeding in car dumper operation is composed of hopper level detector, PLC network module, PLC control module, belt balance measuring system and man-machine interface.
The funnel material level detection device consists of a material level platform bracket and a detection unit; the platform support is utilized to enable the detection opening of the detection unit to be perpendicular to the center of the grate opening of the tilting side hopper of the car dumper, and the installation position of the detection unit avoids the impact position of coal in the process of dumping, so that accurate measurement is ensured, and the interference of the hopper grate of the car dumper on the detection result is avoided.
The PLC network module comprises a remote I/O transmission module, and the remote I/O transmission module transmits data measured by the funnel material level detection device and the belt scale system to the PLC control module in the form of analog signals or digital signals.
The PLC control module is pre-stored with a coal feeding model, and can calibrate the whole feeding amount and the individual hopper material level, so that automatic feeding and automatic dumping operation are realized, and automatic feeding control in the automatic dumping operation process is realized.
The belt scale system is a national standard scale measuring system.
The man-machine interaction interface is provided with a display device and a man-machine dialogue window, an input device capable of manually inputting the total flow of automatic feeding and a switch for starting the automatic feeding system.
The dumper hopper is made of a metal material, the side wall of the hopper is provided with two vertical holes extending in the height direction, the two vertical holes are opposite, and the vertical holes are blocked by a rubber material; the outer sides of the vertical holes are respectively provided with a ray emitting device and a ray detecting device, and the ray emitting device is provided with a ray source, a fan-shaped collimator and a rotary barrel with a plurality of alignment holes; the ray passes through the ray source, the fan-shaped collimator and the collimation holes on the rotary barrel to form scanning ray beams to detect the ray in the hopper, and the ray passes through the ray source, the fan-shaped collimator, the collimation holes on the rotary barrel, the first vertical holes, the materials, the second vertical holes and the ray detection device to detect the ray of the material level in the hopper, and the hopper material level detection device and the ray detection device are used for jointly detecting the material level of the hopper.
A method for automatic feeding for a dumper operation using the above system, comprising the steps of:
the detection unit is arranged on the material level platform bracket; connecting the automatic rollover operation system with a man-machine interaction interface of an automatic feeding system to control and restrict the man-machine interaction interface so as to improve the stability and safety of the automatic operation;
according to different feeding characteristics of different coal types, establishing independent feeding models for the different coal types in an automatic feeding system, and setting independent feeding parameters for each coal type;
the overall feeding amount and the single hopper feeding amount are respectively regulated by utilizing the belt scale system, so that the position of each hopper coal is in a normal position under the premise of ensuring the overall feeding amount to be unchanged.
The material level platform support adopts an inverted L-shaped design and triangle fixed form for the overall structure, and comprises a platform support and a detection unit fixing seat, wherein the platform support is provided with a slide way, the platform support and the detection unit fixing seat are respectively assembled and connected in the form of the slide way, and a pull rod is arranged to enable maintenance personnel to control the detection unit fixing seat to walk in the slide way through traction of the detection unit fixing seat.
The funnel material level detection step establishes 5 measuring points; ultra-high level of material level: the material level of the hopper has affected the position of the dumper for overturning; level up-conversion bit: the storage of the hopper is too many positions in which the feeding capacity of the hopper needs to be improved; material level frequency-reducing position: the position of the funnel with too little stock and the need of reducing the feeding capacity of the funnel; ultra-low level of material level: the stock of the hopper has affected the position where the overall feeding needs to stop the feeding action of the hopper; empty fill level of material level: the position where the stock of the hopper is already zero;
the feeding model is established as follows: measuring feeding data of common coal in each funnel, and measuring the stock quantity of each funnel, the feeding quantity of each variable frequency feeding motor in each funnel and the feeding lifting quantity corresponding to each lifting of each variable frequency feeding motor in each funnel by 1HZ after one operation cycle; calculating the total feeding amount based on the feeding frequency of the variable frequency feeding motor of each hopper, and timing the feeding amount of each hopper; when a new model is built, each funnel is firstly set to feed at a fixed frequency, and the measured data of the belt scale is compared with the data of the known model to obtain the proportion of the feeding amount of the variable frequency feeding motor in each funnel of the coal variety to the feeding amount of the variable frequency feeding motor in each funnel of the known model; when a new coal type works, the feeding lifting quantity corresponding to each hopper variable frequency feeding motor per lifting 1HZ corresponding to the coal type is calculated according to the ratio of the feeding quantity of each hopper variable frequency feeding motor in the coal type to the feeding quantity of each hopper variable frequency feeding motor in a known model, and the feeding frequency of each hopper variable frequency feeding motor of the new coal type is calculated according to the calculation result.
The overall feed amount is adjusted as follows: acquiring the feeding frequency of each funnel variable frequency feeding motor of the current automatic feeding, calculating the current total feeding amount according to a model, wherein the total feeding amount is the sum of the feeding amounts of the variable frequency feeding motors in each funnel, comparing the total feeding amount with the preset feeding amount, and adjusting the feeding system to adjust the frequency of all the working feeding motors when the difference value is larger than the feeding lifting amount corresponding to the feeding frequency lifting 1HZ of all the funnel variable frequency feeding motors; the overall feeding amount is ensured to be equal to the preset feeding amount in the automatic feeding process.
The single bucket feeding amount is adjusted as follows: obtaining a feeding lifting amount corresponding to lifting of 1HZ of each funnel variable frequency feeding motor of a corresponding coal type according to the model, and detecting the position of each funnel stock measured by a current material level detection device; the feeding frequency of each funnel and other funnels is adjusted according to the material level stock condition and the total feeding quantity condition of each funnel; the method comprises the following steps: firstly, calculating an adjustment value of the overall feeding quantity after adjustment corresponding to all funnels except a certain specific funnel, namely the frequency-increasing 1HZ or the frequency-decreasing 1HZ, and then calculating the feeding frequency which needs to be adjusted in order to offset the adjustment value of the fixed specific funnel; when the coal stock of the hopper is at the material level frequency-raising position for 1-5 minutes, the feeding frequency of the hopper is adjusted once, the adjustment value is the feeding frequency value which the hopper should be adjusted, and simultaneously, each hopper is subjected to frequency-lowering adjustment once, and the adjustment value is 1; when the coal stock of the hopper is at the frequency-reducing position for 1-5 minutes, the feeding frequency of the hopper is subjected to frequency-reducing adjustment once, the adjustment value of the frequency-reducing adjustment is the feeding frequency value which the hopper needs to be adjusted, and each hopper is subjected to frequency-increasing adjustment once, and the adjustment value is 1.
The automatic feeding is connected with an automatic rollover operation system; after confirming the set value of the rated feeding amount, the automatic feeding system side allows starting only after obtaining the starting signal of the corresponding belt conveyor; after the automatic feeding system is started, controlling a hopper gate of the car dumper to conduct opening action, wherein the hopper can participate in the automatic feeding system after the hopper gate is opened; when the storage of the funnel coal is in the 'super-high position', the dumper is forbidden to continue dumping the coal, and when the storage of the funnel coal is not in the 'super-high position', the dumper can continue dumping the coal; when the coal stock of the funnel is in the ultra-low position, the feeding motor of the funnel is forbidden to continue to act, and when the coal stock of the funnel is not in the ultra-low position, the feeding motor can continue to feed; when the measured value of the belt scale system is higher than the set value and lasts for 1-5 minutes, the automatic feeding system is stopped, and the man-machine interaction interface is controlled to report errors.
Example 2
The invention is composed of four parts of a hopper material level detection device, material level data acquisition, logic program editing and man-machine conversation window establishment.
Firstly, the installation position of the funnel material level detection device is selected, so that the dumped coal material can not impact the detection device in the process of automatically dumped wagon of the dumper, and meanwhile, the specific condition of the funnel material level can be accurately measured. And designing a mounting bracket of the material level detection unit, and manufacturing and mounting the mounting bracket.
After the bracket of the funnel material level measuring device is installed, a probe is installed on a platform on the bracket according to the requirement of a material level detecting unit, and measurement data is transmitted to a PLC system in a form that a communication line is connected with a remote I/O module.
After the data acquisition of the material level detection device is completed, planning and designing the data of the material level detection device, and applying each point to the integral automatic feeding control and the automatic operation system control. And the original belt balance data in the system are combined to realize the real-time monitoring of the hopper material level and the whole feeding amount in the automatic operation process of the car dumper.
Different coal feeding models: in the process of carrying out the car dumper operation according to the rated capacity, the feeding frequencies required to be provided by the hopper feeding motor are different according to different coal types during the operation, and in order to enable automatic feeding to be suitable for different coal types, all relevant parameters in the following automatic feeding process need to be adjusted through calculation of a feeding model in the early stage of automatic feeding.
The whole feeding quantity calibration program is edited, and the feeding frequency of all hoppers in operation is adjusted according to the comparison difference value of belt scale data and a set value in an automatic feeding system, so that the feeding quantity of hoppers of the tippler in the automatic feeding operation process meets the operation requirement at all times.
The independent funnel material level calibration program is edited, in order to ensure that the coal material stock in each funnel is always in a normal position (not in a high position or a low position for a long time) in the automatic feeding process, and the automatic feeding system can respectively adjust the funnels according to the position and the time of the stock of each funnel. In order to avoid the phenomenon that the overturning is influenced by the too high material level of the hopper or the coal feeding head is generated due to the too low material level of the hopper in the automatic feeding process.
The interface program of the automatic feeding and automatic turning operation system is edited, and the frequency of actions of the turning machine and the like can influence the automatic feeding system because of the working state of the variable-frequency feeding motor in the production operation process. In order to ensure that the automatic feeding system can not be interfered by external factors of the system in the running process of the automatic feeding system, the automatic feeding system and the automatic rollover operation system are connected, so that the two systems are mutually restricted and do not collide.
Is a man-machine conversation window in the system. Through the operation of the operator, the rated total feeding amount of the automatic feeding system can be input in a setting frame of the feeding amount value, the automatic feeding system is started by clicking an automatic feeding button after the automatic feeding condition is met, the emptying operation is performed by clicking an emptying button when the automatic operation is about to be finished, and the automatic feeding system is automatically stopped afterwards.
A system for automatically feeding materials for the operation of a car dumper is composed of a hopper material level detection device, a PLC network, a PLC logic program, a belt scale measuring system and an operation interface.
A system for automatic feeding of tipper operation, the said material level checkout gear is by a material level platform support and a kind of detection unit which measures the accurate signal stability. In order to ensure accurate measurement and avoid interference of a hopper grate of the dumper on a detection result, the platform support needs to ensure that a detection port of the detection unit is perpendicular to the center of a port of a hopper grate on the dumper tipping side, and meanwhile, the position needs to avoid being impacted by coal in the dumper tipping process.
The above examples are merely illustrative of embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Various modifications and improvements of the technical solution of the present invention, which do not depart from the design concept of the invention, should be made by those skilled in the art, the scope of the present invention is defined by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference numerals in the claims shall not be regarded as limiting the claims concerned.
Claims (6)
1. A method for automatic feeding of a dumper operation, a system for automatic feeding of a dumper operation is utilized, characterized in that:
the automatic feeding system for the dumper operation consists of a funnel material level detection device, a PLC network module, a PLC control module, a belt scale measurement system and a human-computer interaction interface, wherein the funnel material level detection device consists of a material level platform bracket and a detection unit; the platform bracket is utilized to enable the detection port of the detection unit to be perpendicular to the center of the grate port of the tilting side hopper of the dumper, and the installation position of the detection unit avoids the impact position of coal in the process of dumping, so that accurate measurement is ensured, and the interference of the hopper grate of the dumper on the detection result is avoided;
the method for automatic feeding of the dumper operation comprises the following steps:
the detection unit is arranged on the material level platform bracket; connecting the automatic rollover operation system with a man-machine interaction interface of an automatic feeding system to control and restrict the man-machine interaction interface so as to improve the stability and safety of the automatic operation;
according to different feeding characteristics of different coal types, establishing independent feeding models for the different coal types in an automatic feeding system, and setting independent feeding parameters for each coal type;
the overall feeding amount and the single hopper feeding amount are respectively regulated by utilizing a belt scale system, so that the position of each hopper coal is at a normal position under the premise of ensuring the overall feeding amount to be unchanged;
the material level platform support adopts an inverted L-shaped design and triangle fixing mode with an integral structure, and comprises a platform support and a detection unit fixing seat, wherein the platform support is provided with a slideway, the platform support and the detection unit fixing seat are respectively assembled and connected in the slideway, and a pull rod is arranged to enable maintenance personnel to control the detection unit fixing seat to walk in the slideway by pulling the detection unit fixing seat;
the funnel material level detection step establishes 5 measuring points; ultra-high level of material level: the material level of the hopper has affected the position of the dumper for overturning; level up-conversion bit: the storage of the hopper is too many positions in which the feeding capacity of the hopper needs to be improved; material level frequency-reducing position: the position of the funnel with too little stock and the need of reducing the feeding capacity of the funnel; ultra-low level of material level: the stock of the hopper has affected the position where the overall feeding needs to stop the feeding action of the hopper; empty fill level of material level: the position where the stock of the hopper is already zero;
the feeding model is established as follows: measuring feeding data of common coal in each funnel, and measuring the stock quantity of each funnel, the feeding quantity of each variable frequency feeding motor in each funnel and the feeding lifting quantity corresponding to each lifting of each variable frequency feeding motor in each funnel by 1HZ after one operation cycle; calculating the total feeding amount based on the feeding frequency of the variable frequency feeding motor of each hopper, and timing the feeding amount of each hopper; when a new model is built, each funnel is firstly set to feed at a fixed frequency, and the measured data of the belt scale is compared with the data of the known model to obtain the proportion of the feeding amount of the variable frequency feeding motor in each funnel of the coal variety to the feeding amount of the variable frequency feeding motor in each funnel of the known model; when a new coal type works, calculating the feeding lifting quantity corresponding to each hopper variable frequency feeding motor per lifting 1HZ corresponding to the coal type according to the ratio of the feeding quantity of each hopper variable frequency feeding motor in the coal type to the feeding quantity of each hopper variable frequency feeding motor in a known model, and calculating the feeding frequency of each hopper variable frequency feeding motor of the new coal type according to a calculation result; the overall feed amount is adjusted as follows: acquiring the feeding frequency of each funnel variable frequency feeding motor of the current automatic feeding, calculating the current total feeding amount according to a model, wherein the total feeding amount is the sum of the feeding amounts of the variable frequency feeding motors in each funnel, comparing the total feeding amount with the preset feeding amount, and adjusting the feeding system to adjust the frequency of all the working feeding motors when the difference value is larger than the feeding lifting amount corresponding to the feeding frequency lifting 1HZ of all the funnel variable frequency feeding motors; ensuring that the total feeding amount is equal to the preset feeding amount in the automatic feeding process; the single bucket feeding amount is adjusted as follows: obtaining a feeding lifting amount corresponding to lifting of 1HZ of each funnel variable frequency feeding motor of a corresponding coal type according to the model, and detecting the position of each funnel stock measured by a current material level detection device; the feeding frequency of each funnel and other funnels is adjusted according to the material level stock condition and the total feeding quantity condition of each funnel; the method comprises the following steps: firstly, calculating an adjustment value of the overall feeding quantity after adjustment corresponding to all funnels except a certain specific funnel, namely the frequency-increasing 1HZ or the frequency-decreasing 1HZ, and then calculating the feeding frequency which needs to be adjusted in order to offset the adjustment value of the fixed specific funnel; when the coal stock of the hopper is at the material level frequency-raising position for 1-5 minutes, the feeding frequency of the hopper is adjusted once, the adjustment value is the feeding frequency value which the hopper should be adjusted, and simultaneously, each hopper is subjected to frequency-lowering adjustment once, and the adjustment value is 1; when the coal stock of the hopper is at the frequency-reducing position for 1-5 minutes, the feeding frequency of the hopper is subjected to frequency-reducing adjustment once, the adjustment value of the frequency-reducing adjustment is the feeding frequency value which the hopper needs to adjust, and each hopper is subjected to frequency-increasing adjustment once, and the adjustment value is 1; the automatic feeding is connected with an automatic rollover operation system; after confirming the set value of the rated feeding amount, the automatic feeding system side allows starting only after obtaining the starting signal of the corresponding belt conveyor; after the automatic feeding system is started, controlling a hopper gate of the car dumper to conduct opening action, wherein the hopper can participate in the automatic feeding system after the hopper gate is opened; when the storage of the funnel coal is in the 'super-high position', the dumper is forbidden to continue dumping the coal, and when the storage of the funnel coal is not in the 'super-high position', the dumper can continue dumping the coal; when the coal stock of the funnel is in the ultra-low position, the feeding motor of the funnel is forbidden to continue to act, and when the coal stock of the funnel is not in the ultra-low position, the feeding motor can continue to feed; when the measured value of the belt scale system is higher than the set value and lasts for 1-5 minutes, the automatic feeding system is stopped, and the man-machine interaction interface is controlled to report errors.
2. A method for automatic feeding of a tipper operation as recited in claim 1, wherein: the PLC network module comprises a remote I/O transmission module, and the remote I/O transmission module transmits data measured by the funnel material level detection device and the belt scale system to the PLC control module in the form of analog signals or digital signals.
3. A method for automatic feeding of a tipper operation as recited in claim 2, wherein: the PLC control module is internally pre-stored with a coal feeding model, can calibrate the whole feeding amount and the individual hopper material level, realizes automatic feeding and automatic dumping operation, and realizes automatic feeding control in the automatic dumping operation process.
4. A method for automatic feeding of a tipper operation as recited in claim 2, wherein: the belt scale system is a national standard scale measuring system.
5. A method for automated feeding of a truck-dumper operation according to claim 4, wherein: the man-machine interaction interface is provided with a display device and a man-machine dialogue window, an input device capable of manually inputting the total flow of automatic feeding and a switch for starting the automatic feeding system.
6. A method for automatic feeding of a tipper operation as recited in claim 1, wherein: the car dumper hopper is made of a metal material, the side wall of the hopper is provided with two vertical holes extending in the height direction, the two vertical holes are opposite, and the vertical holes are blocked by a rubber material; the outer sides of the vertical holes are respectively provided with a ray emitting device and a ray detecting device, and the ray emitting device is provided with a ray source, a fan-shaped collimator and a rotary barrel with a plurality of alignment holes; the rays pass through the ray source, the fan-shaped collimator, the collimating aperture on the rotary barrel, the first vertical aperture, the materials and the second vertical aperture in sequence; the ray forms scanning ray beam through ray source, fan-shaped collimator, the collimation hole on the rotatory bucket and carries out the ray detection in the funnel, the ray passes through ray source, fan-shaped collimator, the collimation hole on the rotatory bucket, first vertical hole, material, second vertical hole, ray detection device in succession and realizes the ray detection of the material level in the funnel, uses funnel material level detection device and ray detection device to realize the detection of funnel material level jointly.
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| CN114634007B (en) * | 2022-02-11 | 2024-03-22 | 国能黄骅港务有限责任公司 | Feeding system of dumper and low material level detection method and device thereof |
| CN114701870B (en) * | 2022-02-11 | 2024-03-29 | 国能黄骅港务有限责任公司 | Feeding system of dumper and high material level detection method and device thereof |
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| JP2002234611A (en) * | 2001-02-09 | 2002-08-23 | Mitsui Miike Mach Co Ltd | Mixed coal delivery control system by reclaimer |
| JP4270218B2 (en) * | 2006-03-31 | 2009-05-27 | 株式会社日立製作所 | Control device for control object having combustion device, and control device for plant having boiler |
| CN204078561U (en) * | 2014-09-19 | 2015-01-07 | 中交一航局安装工程有限公司 | A kind of material-level detecting device of tipper funnel |
| CN105523368B (en) * | 2015-12-31 | 2018-05-08 | 中国神华能源股份有限公司 | A kind of full-automatic feeding method of tippler and system |
| CN207645409U (en) * | 2017-10-30 | 2018-07-24 | 国投中煤同煤京唐港口有限公司 | A kind of system for car dumper operation autofeed |
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