CN113110338B - Ore loading control method and system for mine hoisting system - Google Patents
Ore loading control method and system for mine hoisting system Download PDFInfo
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- CN113110338B CN113110338B CN202110427359.7A CN202110427359A CN113110338B CN 113110338 B CN113110338 B CN 113110338B CN 202110427359 A CN202110427359 A CN 202110427359A CN 113110338 B CN113110338 B CN 113110338B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/41875—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by quality surveillance of production
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32368—Quality control
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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]
Abstract
The invention provides an ore loading control method and system for a mine hoisting system, wherein the method comprises the following steps: verifying whether equipment of a loading station normally operates, and if so, receiving an automatic loading signal to enter automatic operation; receiving a starting signal, closing a safety loop, generating an automatic loading primary starting signal, starting a belt conveyor, and starting an ore feeder after normal starting; the ore feeder puts the ore in the vibrating hopper on a belt and loads the ore into the measuring hopper, and when the ore loading weight of the measuring hopper reaches a set value, the control unit sends a signal for stopping the ore feeder and the belt; waiting for the hoisting skip to move to a lower stopping point ore loading position, and when the hoisting skip reaches the lower stopping point, putting the ore into the hoisting skip; the control unit sends a start signal to the hoisting system, the hoisting system starts to run upwards, and the ore is lifted to the ground through the hoisting skip. The application greatly improves the operating efficiency and the safe reliability of the loading station.
Description
Technical Field
The invention belongs to the field of mining, and particularly relates to an ore loading control method and system for a mine hoisting system.
Background
The lifting system is the throat of the mine, and the ores mined underground are lifted to the ground through the lifting system for processing, so that the safe and efficient ore loading and lifting system is particularly important for the mine. The ore loading and lifting system is usually operated manually, the start and stop buttons of equipment such as a belt, a vibration hopper, an oil pump, a sector door, a winch start signal and the like are required to be pressed in sequence when one bucket of ore is loaded, and the weight of the loaded ore of the measuring hopper, whether a winch skip is in place and the like are required to be paid attention to all the time during ore loading. The long-time mechanical repeated operation, the operator can form the physical and mental double fatigue, easily causes the phenomena of misoperation and low efficiency, and influences the equipment safety and the ore lifting amount.
Disclosure of Invention
The embodiment of the application provides an ore loading control method and system for a mine hoisting system, and the operation efficiency and the safety and reliability of a loading station are greatly improved.
In a first aspect, an embodiment of the present application provides a mine hoisting system ore loading control method, including:
verifying whether equipment of a loading station normally operates, and if so, receiving an automatic loading signal to enter automatic operation;
receiving a starting signal, closing a safety loop, generating an automatic loading initial starting signal, starting the belt conveyor by the starting signal, and feeding back an auxiliary contact to the control unit after a belt conveyor contactor is closed; after the control unit detects the feedback signal of the auxiliary contact, the ore feeder is started, and the feedback signal of normal starting is sent to the control unit by the ore feeder;
the ore feeder puts the ore in the vibrating hopper on a belt and loads the ore into a measuring hopper, the measuring hopper is provided with an electronic scale for measuring the ore quantity loaded into the measuring hopper, and when the ore loading weight of the measuring hopper reaches a set value, a control unit sends a signal for stopping the ore feeder and the belt conveyor;
waiting for the hoisting skip to move to a lower stopping point ore loading position, and when the hoisting skip reaches the lower stopping point, putting the ore into the hoisting skip;
the control unit sends a start signal to the hoisting system, the hoisting system starts to run upwards, and the ore is lifted to the ground through the hoisting skip; the control unit sends an automatic loading cycle starting signal while sending a driving signal to the hoisting system, starts the belt conveyor, starts automatic loading and enters the next cycle.
Wherein, wait for hoist skip to move down the parking point and adorn the ore deposit position, when the hoist skip arrived down the parking point, put into the hoist skip with the ore, include:
after the belt conveyor and the ore feeder stop, the system waits for the winding skip to run to a lower stopping point ore loading position;
when the hoisting skip reaches a lower stop point, a skip lower signal lamp is on, a hydraulic oil pump motor is started to prepare for supplying oil to a sector door oil cylinder of the metering hopper, a control unit sends a sector door opening instruction after the oil pump motor is normally started for two seconds, an electromagnetic valve for opening the sector door is opened, hydraulic oil enters the oil cylinder to jack the sector door of the metering hopper, and ore is placed in the hoisting skip;
when the weight of ore in the measuring hopper is lower than 5 tons, the system sends a signal that the sector door is normally opened, and when the sector door touches a proximity switch in which the sector door is in place, the electromagnetic valve is powered off and stops opening the sector door continuously;
after the fan-shaped door stopping signal is sent for two seconds, the control unit sends a fan-shaped door closing signal to control the electromagnetic valve for closing the fan-shaped door to act, and hydraulic oil reversely pushes the fan-shaped door oil cylinder to close the fan-shaped door until the fan-shaped door is closed in place to act.
Wherein, wait for the hoist skip to move down the parking point and adorn the ore deposit position, when the hoist skip arrives down the parking point, put into the hoist skip with the ore, still include:
when the weight of the ore in the measuring hopper is lower than 0.8 ton, the system judges that the ore in the measuring hopper is completely poured into the skip bucket and sends out a signal for stopping the electromagnetic valve.
Wherein, whether the equipment of verifying the loading station normally operates includes:
and loading ores once in a manual mode and putting the ores into a skip bucket, and verifying whether all equipment of the loading station normally operates.
Wherein the safety loop includes the following conditions and various fault detection protections: the method comprises the following steps of measuring hopper weight data jumping, measuring hopper weight data backspacing, belt conveyor faults, ore feeder faults, fan-shaped valve stopping, belt conveyor stopping, ore feeder 1#2# selection, belt conveyor or ore feeder, loading station oil pump contactor faults, measuring hopper full proximity switch faults, bad or no ore of a measuring system, belt conveyor starting failure, loading overtime, ore feeder starting failure, fan-shaped door opening failure, fan-shaped door closing failure, automatic control fan-shaped door failure, winch parking maintenance, automatic ore bin full withdrawal and belt pressing.
Wherein, still include:
monitoring the equipment state when the loading system automatically operates: whether a feedback signal of equipment operation is normal or not; whether the device completes the specified action within the specified time; if no equipment starts normal feedback signals after the equipment starting signals are sent out or the preset actions are not completed within the set time, the fault is reported, the automatic operation is quitted, and a sound alarm is sent out.
Wherein, still include:
and when too much ore is accumulated on the belt, the belt support sinks to enable the proximity switch to act, the control unit sends out an ore feeder stop signal, and the belt conveyor continuously runs for a preset time and retreats to automatically run.
Wherein, include:
when the current parking switch acts, the parking depth is correct, and the correction depth of the depth correction point is correct, the lower signal lamp of the skip bucket is turned on.
Wherein, still include:
installing a material level meter on the weighing hopper, and controlling the loading capacity by the material level meter when the electronic scale is in failure; and the control unit detects whether the electronic scale is normal or not through an algorithm.
In a second aspect, the present application provides a mine hoist system ore loading control system configured to:
verifying whether equipment of a loading station normally operates, and if so, receiving an automatic loading signal to enter automatic operation;
receiving a starting signal, closing a safety loop, generating an automatic loading initial starting signal, starting the belt conveyor by the starting signal, and feeding back an auxiliary contact to the control unit after a belt conveyor contactor is closed; after the control unit detects the feedback signal of the auxiliary contact, the ore feeder is started, and the feedback signal of normal starting is sent to the control unit by the ore feeder;
the ore feeder puts the ore in the vibrating hopper on a belt and loads the ore into a measuring hopper, the measuring hopper is provided with an electronic scale for measuring the ore quantity loaded into the measuring hopper, and when the ore loading weight of the measuring hopper reaches a set value, a control unit sends a signal for stopping the ore feeder and the belt conveyor;
waiting for the hoisting skip to move to a lower stopping point ore loading position, and when the hoisting skip reaches the lower stopping point, putting the ore into the hoisting skip;
the control unit sends a start signal to the hoisting system, the hoisting system starts to run upwards, and the ore is lifted to the ground through the hoisting skip; the control unit sends an automatic loading cycle starting signal while sending a driving signal to the hoisting system, starts the belt conveyor, starts automatic loading and enters the next cycle.
The ore loading control method and the ore loading control system for the mine hoisting system have the following beneficial effects: the invention frees the operator from repeated mechanical operation, realizes the automatic operation of the underground loading station of the ore lifting system, greatly improves the operation efficiency and the safety and reliability of the loading station, and avoids a series of potential safety hazards such as misoperation caused by artificial fatigue.
Drawings
Fig. 1 is a schematic flow chart of an ore loading control method for a mine hoisting system according to an embodiment of the present application;
FIG. 2 is another schematic flow chart of a method for controlling ore loading in a mine hoisting system according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an ore loading control system of the mine hoisting system according to the embodiment of the application.
Detailed Description
The present application is further described with reference to the following figures and examples.
In the following description, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The following description provides embodiments of the invention, which may be combined or substituted for various embodiments, and this application is therefore intended to cover all possible combinations of the same and/or different embodiments described. Thus, if one embodiment includes feature A, B, C and another embodiment includes feature B, D, then this application should also be considered to include an embodiment that includes one or more of all other possible combinations of A, B, C, D, even though this embodiment may not be explicitly recited in text below.
The following description provides examples, and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements described without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than the order described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined into other examples.
The invention adopts a Programmable Logic Controller (PLC) to control the equipment of the loading system, and can realize the automation of the loading system. The specific scheme is as follows: the control circuit of the loading equipment of the underground loading station is accessed into the PLC of the winch electric control system, the PLC is programmed according to the control process of the operation of the equipment of the loading station, the automatic control of the loading station is realized, and the automatic linkage with the winch lifting system is realized, so that the full-automatic operation of ore loading and winch lifting is realized. Firstly, necessary control buttons, output points, fault points and data of electronic scales of a loading metering system are accessed into the PLC. It is secondary to programming the PLC system. The key point of the invention is to program the software of the PLC, realize the safe and reliable control of the equipment through the perfect program, and realize the automatic, safe and efficient operation of the loading system. The PLC system is Siemens S7-300, and the control program is written by an S7 ladder diagram.
As shown in fig. 1-2, the ore loading control method of the mine hoisting system of the present application includes: s101, verifying whether equipment of a loading station normally operates, and if so, receiving an automatic loading signal to enter automatic operation; s103, receiving a starting signal, closing a safety loop, generating an automatic loading primary starting signal, starting the belt conveyor by the starting signal, and feeding back an auxiliary contact to a control unit after a belt conveyor contactor is closed; after the control unit detects the feedback signal of the auxiliary contact, the ore feeder is started, and the feedback signal of normal starting is sent to the control unit by the ore feeder; s105, placing the ore in the vibrating hopper on a belt by the ore feeder and loading the ore into a measuring hopper, wherein the measuring hopper is provided with an electronic scale for measuring the ore quantity loaded into the measuring hopper, and when the ore loading weight of the measuring hopper reaches a set value, the control unit sends a signal for stopping the ore feeder and the belt conveyor; s107, waiting for the hoisting skip to move to a lower stopping point ore loading position, and when the hoisting skip reaches the lower stopping point, putting the ore into the hoisting skip; s109, the control unit sends a driving signal to the hoisting system, the hoisting system drives upwards, and the ore is lifted to the ground through the hoisting skip; the control unit sends an automatic loading cycle starting signal while sending a driving signal to the hoisting system, starts the belt conveyor, starts automatic loading and enters the next cycle. As described in detail below.
The automatic operation execution circuit of the loading system generates automatic start and stop signals of various devices when the loading system automatically operates, and the program controls the various devices of the loading system to automatically start and stop according to the technological process of the loading system. The program simultaneously generates monitoring signals of various control devices, after the starting signal of each step is sent, a certain time is delayed to detect whether the step is started successfully, and only after the corresponding device is started and operated normally, the program automatically sends the starting signal of the next step, so that the meaningless idling of a loading system is avoided.
S101, verifying whether equipment of a loading station normally operates, and if so, receiving an automatic loading signal to enter automatic operation.
Before the loading is automatically carried out, ores are loaded once in a manual mode and are placed into a skip bucket, all equipment of a loading station is verified to be capable of normally operating, and a change-over switch can be turned to automatic loading to enter automatic operation.
S103, receiving a starting signal, closing a safety loop, generating an automatic loading primary starting signal, starting the belt conveyor by the starting signal, and feeding back an auxiliary contact to a control unit after a belt conveyor contactor is closed; and after the control unit detects the feedback signal of the auxiliary contact, the ore feeder is started, and the feedback signal of normal starting is sent to the control unit by the ore feeder.
After the change-over switch is automatically operated, an automatic loading starting button is pressed to start, an automatic loading safety loop is closed and self-protected, an automatic loading initial starting signal is immediately generated, the belt conveyor is immediately started by the starting signal, an auxiliary contact is fed back to the PLC after the belt conveyor contactor is closed, if a program detects the signal feedback signal after two seconds, the belt conveyor is started normally, the ore feeder is immediately started, and the feeding of the ore feeder is also fed back to the PLC by a feedback signal to prompt the normal starting of the feeding of the ore feeder.
And S105, the ore feeder puts the ore in the vibrating hopper on a belt and loads the ore into a measuring hopper, the measuring hopper is provided with an electronic scale for measuring the ore quantity loaded into the measuring hopper, and when the ore loading weight of the measuring hopper reaches a set value, the control unit sends a signal for stopping the ore feeder and the belt conveyor.
When the ore machine is in feeding operation, ores in the vibrating hopper are placed on a belt and are loaded into the measuring hopper, the measuring hopper is provided with an electronic scale for measuring the ore quantity loaded into the measuring hopper, and when the ore loading weight of the measuring hopper reaches a set value of 7.5 tons, a program automatically sends out a signal for stopping the ore machine and the belt conveyor.
S107, waiting for the winding skip to move to a lower stopping point ore loading position, and when the winding skip reaches the lower stopping point, putting the ore into the winding skip.
After the belt conveyor and the ore feeder stop, the system waits for the hoisted skip to move to a lower stopping point ore loading position. When the hoist skip arrived down the parking point, the lower signal lamp of skip was bright, hydraulic pressure oil pump motor is automatic start immediately, prepare to the fan-shaped door hydro-cylinder oil supply of measuring hopper, oil pump motor normally starts two seconds after, the program sends out and opens the fan-shaped door instruction, open the solenoid valve of fan-shaped door and open immediately, hydraulic oil gets into the hydro-cylinder and backs down the fan-shaped door of measuring hopper, the ore just is put into the hoist skip, when ore weight is less than 5 tons in the measuring hopper, the system sends the fan-shaped door and opens normal signal, when the fan-shaped door was opened to the certain degree, touch the proximity switch that the fan-shaped door opened in place, the solenoid valve cuts off the power supply immediately and stops to continue to open the fan-shaped door. When the weight of ore in the measuring hopper is lower than 0.8 ton, the system judges that the ore in the measuring hopper is about to completely reach the skip, and sends out a signal for stopping the electromagnetic valve so as to prevent the sector door from being stopped when the switch is close to the arrival position. After the fan-shaped door stopping signal is sent out for two seconds, the program sends out a fan-shaped door closing signal to control the electromagnetic valve for closing the fan-shaped door to act, the hydraulic oil reversely pushes the fan-shaped door oil cylinder to close the fan-shaped door until the fan-shaped door is closed in place and is opened.
S109, the control unit sends a start signal to the hoisting system, the hoisting system starts to run upwards, and the ore is lifted to the ground through the hoisting skip; the control unit sends an automatic loading cycle starting signal while sending a driving signal to the hoisting system, starts the belt conveyor, starts automatic loading and enters the next cycle
After the fan-shaped door is closed in place and the proximity switch acts, a program automatically sends out a loading station, namely a winch automatic start signal, and after the start signal is sent out, the winch immediately and automatically starts to run upwards to lift ores to the ground. When the start signal is sent, the program also sends an automatic loading cycle starting signal to automatically start the belt conveyor, start automatic loading and enter the next cycle.
The fault point of each equipment, various protections and necessary operating conditions of the loading system are made into a safety loop, and the loop comprises the following conditions and various fault detection protections: the method comprises the following steps of jumping weight data of a measuring hopper, retreating weight data of the measuring hopper, faults of a belt conveyor, faults of an ore feeder, stopping of a sector valve, stopping of the belt conveyor, stopping of the ore feeder, selection of 1#2# of the ore feeder, faults of the belt conveyor or the ore feeder, faults of an oil pump contactor of a loading station, faults of a full proximity switch of the measuring hopper, bad or no ore of a measuring system, starting failure of the belt conveyor, loading overtime, starting failure of the ore feeder, opening failure of a sector door, closing failure of the sector door, failure of an automatic control sector door, winch stopping and maintenance, automatic full withdrawal of the ore bin and pressing of a belt. After the loading station enters automatic operation, the loading station equipment presses a stop button, the safety circuit is disconnected when the system program detects a fault, the automatic operation is quitted, and an audible and visual alarm is sent to inform an operator of processing.
The ore loading control method for the mine hoisting system further comprises the following steps: monitoring the equipment state when the loading system automatically operates: whether a feedback signal of equipment operation is normal or not; whether the device completes the specified action within the specified time; if the equipment does not start normal feedback signals after the equipment starting signals are sent out or the preset actions are not completed within the set time, the fault is reported, the automatic operation is quitted, and a sound alarm is sent out.
The program monitors the equipment state when the loading system automatically runs: whether a feedback signal of equipment operation is normal or not; whether the device completed the specified action within the specified time. If no equipment starts normal feedback signals after the equipment starting signals are sent out or the preset actions are not completed within the set time, the fault is reported, the automatic operation is quitted, and a sound alarm is sent out. This avoids the loading system being stuck all the time in a step and not being able to proceed to the next step. Meanwhile, the program can judge which step is failed to start, the running and fault information is displayed on a loading station page of a monitoring computer WINCC interface of the winch operation room, meanwhile, a computer display image is converted into a video signal and transmitted to a video monitor of an underground loading station operation room, and an ore loading operator can check the running state and the fault information of the loading system and the prompt information of the current fault processing method in real time. Each control process is provided with at least two different monitoring programs to ensure the reliability of the system, and the equipment can give an alarm and quit the automatic operation once the equipment is abnormal in the automatic control process. Meanwhile, the monitoring program also refers to some operation experiences and operation habits of ore drawing operators, and simulates some efficient, intelligent and safe operation modes during manual operation, so that the equipment is operated more efficiently and safely. The two faults of the jump of the weight data of the weighing hopper and the rollback of the weight data of the weighing hopper are that an operator is simulated to observe the data of the weighing scale during loading, and if the operator finds that the data suddenly jumps from very small to very large or that one large datum suddenly changes from very small to small during manual operation, the weighing scale is judged to be definitely bad. When the automatic loading is carried out, the program always records and analyzes the weight data change of the ore loading of the measuring hopper, and when the data has large jump and backspace, the automatic loading machine immediately reports the fault and quits the automatic operation. The method comprises the following steps that belt conveyor starting failure, ore feeder starting failure, sector door opening failure, sector door closing failure and automatic control sector door failure are set from the perspective of an operator, the feedback conditions of starting and stopping of equipment are observed within a certain time after each step of operation, and equipment control failure is determined without corresponding feedback signals. The two faults of bad or no ore in the metering system and overtime loading are also important signs for monitoring whether the metering system and the loading system are normal or not, automatic loading operation is started to set time, and the set weight is not loaded yet, or the vibrating hopper is blocked without ore, or the metering is weighed to be broken.
Risk control during automated operation of loading system
There are mainly 3 risks in the automatic operation of the loading system:
the first risk is that the vibrating hopper draws ore too quickly causing the ore to overflow the belt. The proximity switch is installed below the belt support, the ore is accumulated on the belt too much, the belt support is caused to sink, the proximity switch is enabled to act, at the moment, the ore feeding motor is immediately stopped by the program, and the belt continuously runs for 1 minute and retreats to automatically run.
The second risk is that the skip is not located at the lower position and the correct loading position, the lower lamp is on (usually caused by the wrong depth number of the position of the hoisting skip and the faults of a stop switch and a depth correction switch), and the lower lighting system of the skip automatically opens the sector door to draw the ore, so that the ore is mistakenly placed at the bottom of the well. In order to prevent the situation, the lower condition of the skip bucket needs to be modified, the skip bucket is lightened under the action of a lower parking switch originally, two conditions of correct parking depth and correct correction depth of a depth correction point are added, and the phenomenon that the ore is mistakenly drawn to the bottom of the well can be basically avoided.
The third risk is that the ore-loading weighing hopper is damaged by electronic weighing. The hardware aspect is that a charge level indicator is arranged on the weighing hopper, once the electronic scale is broken, the charge level indicator can play a role in controlling the loading capacity, and the software aspect is that a program detects whether the electronic scale is normal through a plurality of algorithms: mainly comprises loading overtime, data jump and data rollback. Meanwhile, the control program can judge whether the charge level indicator is normal or not according to the state of the electronic scale, and the function of monitoring the charge level indicator and the electronic scale mutually to determine whether the charge level indicator is normal or not can be realized. Through these protections, it is ensured that the system can detect whether the electronic scale is out of order, so as to ensure that the weighing hopper and the skip are not overloaded.
The ore loading control method for the mine hoisting system further comprises the following steps: the proximity switch is installed below the belt support and connected with the control unit, when too much ore is accumulated on the belt, the belt support sinks to enable the proximity switch to act, the control unit sends out an ore feeder stop signal, and the belt conveyor continuously runs for a preset time and retreats to automatically run.
The ore loading control method for the mine hoisting system comprises the following steps: when the lower parking switch acts, the parking depth is correct, and the correction depth of the depth correction point is correct, the lower signal lamp of the skip is on.
The ore loading control method for the mine hoisting system further comprises the following steps: a material level meter is arranged on the weighing hopper, and when the electronic scale breaks down, the material level meter controls the loading amount of the electronic scale; the control unit detects whether the electronic scale is normal or not through an algorithm.
The invention changes the manual operation of the underground loading station into the automatic control of a PLC system. The automatic loading station has the advantages that operators are liberated from repeated mechanical operation, the automatic operation of the underground loading station of the ore lifting system is realized, the operation efficiency and the safety and reliability of the loading station are greatly improved, and a series of potential safety hazards such as misoperation caused by artificial fatigue are avoided. After the ore lifting system realizes the full-automatic operation of the hoisting and loading stations, the lifting amount is improved by more than 10 percent compared with the prior art.
The invention accesses the control equipment of the loading station into the PLC system, programs the software of the PLC system, realizes the safe and reliable control of the equipment through a perfect program, and realizes the automatic, safe and efficient operation of the loading station.
As shown in fig. 3, the present application provides a mine hoist system ore loading control system configured to:
verifying whether equipment of a loading station normally operates, and if so, receiving an automatic loading signal to enter automatic operation;
receiving a starting signal, closing a safety loop, generating an automatic loading initial starting signal, starting the belt conveyor by the starting signal, and feeding back an auxiliary contact to the control unit after a belt conveyor contactor is closed; after the control unit detects the feedback signal of the auxiliary contact, the ore feeder is started, and the feedback signal of normal starting is sent to the control unit by the ore feeder;
the ore feeder puts the ore in the vibrating hopper on a belt and loads the ore into a measuring hopper, the measuring hopper is provided with an electronic scale for measuring the ore quantity loaded into the measuring hopper, and when the ore loading weight of the measuring hopper reaches a set value, the control unit sends a signal for stopping the ore feeder and the belt conveyor;
waiting for the hoisting skip to move to a lower stopping point ore loading position, and when the hoisting skip reaches the lower stopping point, putting the ore into the hoisting skip;
the control unit sends a start signal to the hoisting system, the hoisting system starts to run upwards, and the ore is lifted to the ground through the hoisting skip; the control unit sends an automatic loading cycle starting signal while sending a driving signal to the hoisting system, starts the belt conveyor, starts automatic loading and enters the next cycle.
In the present application, the embodiment of the ore loading control system of the mine hoisting system is basically similar to the embodiment of the ore loading control method of the mine hoisting system, and reference is made to the description of the embodiment of the ore loading control method of the mine hoisting system for relevant points.
It is clear to a person skilled in the art that the solution according to the embodiments of the present invention can be implemented by means of software and/or hardware. The "unit" and "module" in this specification refer to software and/or hardware that can perform a specific function independently or in cooperation with other components, where the hardware may be, for example, an FPGA (Field-Programmable Gate Array), an IC (Integrated Circuit), or the like.
Each processing unit and/or module according to the embodiments of the present invention may be implemented by an analog circuit that implements the functions described in the embodiments of the present invention, or may be implemented by software that executes the functions described in the embodiments of the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
All functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A mine hoisting system ore loading control method is characterized by comprising the following steps:
verifying whether equipment of a loading station normally operates, and if so, receiving an automatic loading signal to enter automatic operation;
receiving a starting signal, closing a safety loop, generating an automatic loading primary starting signal, starting a belt conveyor by the starting signal, and feeding back an auxiliary contact to a control unit after a belt conveyor contactor is closed; after the control unit detects the feedback signal of the auxiliary contact, the ore feeder is started, and the feedback signal of normal starting is sent to the control unit by the ore feeder;
the ore feeder puts the ore in the vibrating hopper on a belt and loads the ore into a measuring hopper, the measuring hopper is provided with an electronic scale for measuring the ore quantity loaded into the measuring hopper, and when the ore loading weight of the measuring hopper reaches a set value, a control unit sends a signal for stopping the ore feeder and the belt conveyor;
waiting for the hoisting skip to move to a lower stopping point ore loading position, and when the hoisting skip reaches the lower stopping point, putting the ore into the hoisting skip;
the control unit sends a start signal to the hoisting system, the hoisting system starts to run upwards, and the ore is lifted to the ground through the hoisting skip; the control unit sends an automatic loading cycle starting signal while sending a driving signal to the hoisting system, starts the belt conveyor, starts automatic loading and enters the next cycle;
when the lower parking switch acts, the parking depth is correct, and the correction depth of the depth correction point is correct, the lower signal lamp of the skip is turned on, and the system automatically opens the sector door for ore drawing.
2. The mine hoist system ore loading control method of claim 1, wherein waiting for the hoisting skip to travel to a lower stopping point ore loading position and placing ore into the hoisting skip when the hoisting skip reaches the lower stopping point comprises:
after the belt conveyor and the ore feeder are stopped, the system waits for the winding skip to run to a lower stopping point ore loading position;
when the hoisting skip reaches a lower stop point, a skip lower signal lamp is on, a hydraulic oil pump motor is started to prepare for supplying oil to a sector door oil cylinder of the metering hopper, a control unit sends a sector door opening instruction after the oil pump motor is normally started for two seconds, an electromagnetic valve for opening the sector door is opened, hydraulic oil enters the oil cylinder to jack the sector door of the metering hopper, and ore is placed in the hoisting skip;
when the weight of ore in the measuring hopper is lower than 5 tons, the system sends a signal that the sector door is normally opened, and when the sector door touches a proximity switch with the sector door in place, the electromagnetic valve is powered off and stops continuously opening the sector door;
after the fan-shaped door stopping signal is sent for two seconds, the control unit sends a fan-shaped door closing signal to control the electromagnetic valve for closing the fan-shaped door to act, the hydraulic oil pushes the fan-shaped door oil cylinder reversely, the fan-shaped door is closed until the fan-shaped door is closed in place, and the switch acts.
3. The mine hoist system ore loading control method of claim 2, wherein waiting for the hoisting skip to travel to a lower stopping point loading position and placing ore into the hoisting skip when the hoisting skip reaches the lower stopping point further comprises:
when the weight of the ore in the measuring hopper is lower than 0.8 ton, the system judges that the ore in the measuring hopper is completely poured into the skip bucket and sends out a signal for stopping the electromagnetic valve.
4. A mine hoist system ore loading control method as claimed in any one of claims 1 to 3, wherein verifying that the equipment at the loading station is operating properly comprises:
and loading ores once in a manual mode and putting the ores into a skip bucket, and verifying whether all equipment of the loading station normally operates.
5. A mine hoist system ore loading control method as claimed in any one of claims 1 to 3, wherein the safety loop includes the following conditions and various fault detection protections: the method comprises the following steps of jumping weight data of a measuring hopper, retreating weight data of the measuring hopper, faults of a belt conveyor, faults of an ore feeder, stopping of a sector valve, stopping of the belt conveyor, stopping of the ore feeder, selection of 1#2# of the ore feeder, faults of the belt conveyor or the ore feeder, faults of an oil pump contactor of a loading station, faults of a full proximity switch of the measuring hopper, bad or no ore of a measuring system, starting failure of the belt conveyor, loading overtime, starting failure of the ore feeder, opening failure of a sector door, closing failure of the sector door, failure of an automatic control sector door, winch stopping and maintenance, automatic full withdrawal of the ore bin and pressing of a belt.
6. The mine hoist system ore loading control method of any one of claims 1-3, further comprising:
monitoring the equipment state when the loading system automatically operates: whether a feedback signal of equipment operation is normal or not; whether the device completes the specified action within the specified time; if the equipment does not start normal feedback signals after the equipment starting signals are sent out or the preset actions are not completed within the set time, the fault is reported, the automatic operation is quitted, and a sound alarm is sent out.
7. The mine hoist system ore loading control method of any one of claims 1-3, further comprising:
the proximity switch is installed below the belt support and connected with the control unit, when too much ore is accumulated on the belt, the belt support sinks to enable the proximity switch to act, the control unit sends out an ore feeder stop signal, and the belt conveyor continuously runs for a preset time and retreats to automatically run.
8. The mine hoist system ore loading control method of any one of claims 1-3, further comprising:
installing a material level meter on the weighing hopper, and controlling the loading capacity by the material level meter when the electronic scale is in failure; and the control unit detects whether the electronic scale is normal or not through an algorithm.
9. A mine hoist system ore loading control system, the control system configured to:
verifying whether equipment of a loading station normally operates, and if so, receiving an automatic loading signal to enter automatic operation;
receiving a starting signal, closing a safety loop, generating an automatic loading initial starting signal, starting the belt conveyor by the starting signal, and feeding back an auxiliary contact to the control unit after a belt conveyor contactor is closed; after the control unit detects the feedback signal of the auxiliary contact, the ore feeder is started, and the feedback signal of normal starting is sent to the control unit by the ore feeder;
the ore feeder puts the ore in the vibrating hopper on a belt and loads the ore into a measuring hopper, the measuring hopper is provided with an electronic scale for measuring the ore quantity loaded into the measuring hopper, and when the ore loading weight of the measuring hopper reaches a set value, the control unit sends a signal for stopping the ore feeder and the belt conveyor;
waiting for the hoisting skip to move to a lower stopping point ore loading position, and when the hoisting skip reaches the lower stopping point, putting the ore into the hoisting skip;
the control unit sends a start signal to the hoisting system, the hoisting system starts to run upwards, and the ore is lifted to the ground through the hoisting skip; the control unit sends an automatic loading cycle starting signal while sending a driving signal to the hoisting system, starts the belt conveyor, starts automatic loading and enters the next cycle;
when the lower parking switch acts, the parking depth is correct, and the correction depth of the depth correction point is correct, the lower signal lamp of the skip is turned on, and the system automatically opens the sector door for ore drawing.
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| CN102009887B (en) * | 2010-10-30 | 2013-07-24 | 枣庄矿业（集团）有限责任公司蒋庄煤矿 | Overload lowering prevention monitoring system of main shaft friction type hoister |
| CN102393717A (en) * | 2011-11-09 | 2012-03-28 | 烟台金建冶金科技有限公司 | Independent and intelligent loading station control system |
| CN102910459B (en) * | 2012-10-24 | 2016-01-06 | 徐州五洋科技股份有限公司 | A kind of improved type skip bucket definite weight equipment |
| CN106081834A (en) * | 2016-08-30 | 2016-11-09 | 山西科达富升智能控制技术有限公司 | A kind of mine vertical shaft elevator unmanned control system and control method thereof |
| CN206590745U (en) * | 2017-03-14 | 2017-10-27 | 平煤神马建工集团有限公司 | The super automatic Load System of Deep vertical shaft tipping skip |
| CN109436724A (en) * | 2018-12-11 | 2019-03-08 | 山东钢铁股份有限公司 | A kind of belt feeder material-blockage preventing device and its application method |
| CN111208769B (en) * | 2020-03-02 | 2021-05-28 | 浙江繁荣电气股份有限公司 | Wisdom mine centralized control cabinet |
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