A coordinated control system for multiple unloading conveyor belts in a concentrate stockpile.

Abstract

This utility model relates to a coordinated control system for multiple unloading conveyor belts in a concentrate stockpile. A first motor protection switch is connected in series with the main contacts of a first contactor and then connected to the first motor; a second motor protection switch is connected in series with the main contacts of a second contactor and then connected to the second motor; a third motor protection switch is connected in series with the main contacts of a third contactor and then connected to the third motor; a fourth motor protection switch is connected in series with the main contacts of a fourth contactor and then connected to the fourth motor; one end of a control circuit breaker is connected to the power supply, and the other end of the control circuit breaker is connected to a switching power supply, which is connected to a programmable logic controller (PLC); the main circuit is coupled to the PLC, and the detection equipment on conveyor belts G1#, X1#, X2#, X3#, X1#, X2#, and X3#, as well as silos X1#, X2#, and X3#, is all connected to the PLC; thereby improving production efficiency, reducing labor costs, and enabling more timely and efficient coordinated control.

Description

Technical Field

[0001] This utility model relates to the field of intelligent mining technology, and in particular to a collaborative control system for multiple unloading conveyor belts in a concentrate stockpile. Background Technology

[0002] Currently, the unloading process in traditional ore processing plants suffers from a high degree of reliance on manual labor. This not only requires highly skilled operators to mitigate the risk of misoperation but also results in high labor costs. Furthermore, manual operation suffers from response delays. In cases of equipment failure or silo overload, failure to address the issue promptly can easily lead to production accidents such as material accumulation and spillage, severely impacting production continuity.

[0003] Traditional ore unloading processes in mineral processing plants suffer from significant efficiency constraints and safety risks. As a crucial link connecting core processes such as crushing, grinding, beneficiation, and tailings treatment, the systematic coordination of ore unloading operations directly impacts overall production efficiency. However, current control methods still primarily rely on manual inspection of equipment status, issuing manual commands, and coordinating operations via on-site walkie-talkies. This approach is not only slow to respond but also significantly reduces the effective operating time of equipment, thereby lowering production efficiency.

[0004] When critical equipment malfunctions suddenly, operators struggle to obtain accurate fault information in a timely manner, and are even less able to quickly coordinate the operation of related equipment. For example, if a conveyor belt misalignment causes a shutdown, failure to switch the belt in time can lead to a chain reaction of accidents, including concentrate accumulation, belt tearing, and even motor burnout. More alarmingly, frequent manual intervention not only increases the risk of operational errors, but its inherent response delay also results in significant energy waste and abnormal equipment wear. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a collaborative control system for multiple unloading conveyor belts in a concentrate stockpile. Its advantages are that it can reduce manpower, reduce production accidents, and improve production efficiency.

[0006] The above-mentioned utility model objective is achieved through the following technical solution: a coordinated control system for multiple unloading conveyor belts in a concentrate stockpile, used for coordinated regulation of conveyor belt failure and full-bin transfer, and for conveying materials to the silo via conveyor belts, including a main circuit and a control circuit; the main circuit includes a first branch, a second branch, a third branch, and a fourth branch connected in parallel; the first branch includes a first motor protection switch and a first contactor, the first motor protection switch and the main contacts of the first contactor being connected in series to the first motor on the G1# conveyor belt; the second branch includes a second motor protection switch and a second contactor, the second motor protection switch and the main contacts of the second contactor being connected in series to the second motor on the X1# conveyor belt; the third branch includes a third motor protection switch and a third contactor, the third... The motor protection switch is connected in series with the main contacts of the third contactor to the third motor on the X2# belt conveyor; the fourth branch includes a fourth motor protection switch and a fourth contactor, and the fourth motor protection switch is connected in series with the main contacts of the fourth contactor to the fourth motor on the X3# belt conveyor; the control circuit includes a programmable logic controller, a switching power supply, and a control circuit breaker, one end of which is connected to the power supply, and the other end of which is connected to the switching power supply, which is connected to the programmable logic controller; the main circuit is coupled to the programmable logic controller, and the detection equipment on the G1# belt conveyor, the X1# belt conveyor, the X2# belt conveyor, the X3# belt conveyor, the X1# silo, the X2# silo, and the X3# silo are all connected to the programmable logic controller.

[0007] Preferably, in the coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided by this utility model, the first motor protection switch, the second motor protection switch, the third motor protection switch, and the fourth motor protection switch are all circuit breakers using thermal relays.

[0008] Preferably, the coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided by this utility model further includes an output module. The output module is connected to the digital output terminal of the programmable logic controller. The main circuit and the No. 1 and No. 2 unloaders on the G1# conveyor belt are both connected to the output module.

[0009] Preferably, the coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided by this utility model includes an output module comprising a first relay, a second relay, a third relay, a fourth relay, a fifth relay, a sixth relay, a seventh relay, and an eighth relay. The digital output terminals Q0.0 to Q0.7 of the programmable logic controller are respectively connected to the coil terminals A1 of the first relay to the eighth relay, and the coil terminal A2 of each relay is connected to the negative terminal of the control power supply.

[0010] Preferably, in the coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided by this utility model, one end of the normally open contact terminal NO of the first relay to the fourth relay is connected to the coil terminal A1 of the first contactor to the fourth contactor, the other end of the normally open contact terminal NO of the first relay to the fourth relay is connected to the live wire L1, and the coil terminal A2 of the first contactor to the fourth contactor is connected to the neutral wire N.

[0011] Preferably, in the coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided by this utility model, one end of the normally open contact terminal NO of the fifth to the eighth relays is connected to the rising solenoid valve of the 1# unloader, the falling solenoid valve of the 1# unloader, the rising solenoid valve of the 2# unloader, and the falling solenoid valve of the 2# unloader, respectively. The other end of the normally open contact terminal NO of the fifth to the eighth relays is connected to the positive terminal of the control power supply. The rising solenoid valve of the 1# unloader, the falling solenoid valve of the 1# unloader, the rising solenoid valve of the 2# unloader, and the falling solenoid valve of the 2# unloader are all connected to the negative terminal of the control power supply.

[0012] Preferably, in the coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided by this utility model, the digital input terminals I0.0 to I0.7 of the programmable logic controller are respectively connected to the first changeover switch on the G1# conveyor belt, the auxiliary normally open contact of the first contactor, the fault signal contact of the first motor protection switch, the first pull rope switch on the G1# conveyor belt, the first belt misalignment switch on the G1# conveyor belt, the second changeover switch on the X1# conveyor belt, the auxiliary normally open contact of the second contactor, and the fault signal contact of the second motor protection switch.

[0013] Preferably, in the coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided by this utility model, the digital input terminals I1.0 to I1.7 of the programmable logic controller are respectively connected to the second pull rope switch on the X1# conveyor belt, the second misalignment switch on the X1# conveyor belt, the third changeover switch on the X2# conveyor belt, the auxiliary normally open contact of the third contactor, the fault signal contact of the third motor protection switch, the third pull rope switch on the X2# conveyor belt, the third misalignment switch on the X2# conveyor belt, and the fourth changeover switch on the X3# conveyor belt.

[0014] Preferably, in the coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided by this utility model, the digital input terminals I2.0 to I2.3 of the programmable logic controller are respectively connected to the auxiliary normally open contact of the fourth contactor, the fault signal contact of the fourth motor protection switch, the fourth pull rope switch on the X3# conveyor belt, and the fourth misalignment switch on the X3# conveyor belt; the digital input terminals I2.4 and I2.5 of the programmable logic controller are respectively connected to the first electromagnetic switch and the second electromagnetic switch of the 1# unloader on the G1# conveyor belt; and the digital input terminals I2.6 and I2.7 of the programmable logic controller are respectively connected to the third electromagnetic switch and the fourth electromagnetic switch of the 2# unloader on the G1# conveyor belt.

[0015] Preferably, in the coordinated control system for multiple unloading conveyor belts in the concentrate stockpile provided by this utility model, the analog input modules AI01 to AI03 of the programmable logic controller are respectively connected to the first radar level gauge configured on the X1# silo, the second radar level gauge configured on the X2# silo, and the third radar level gauge configured on the X3# silo.

[0016] In summary, the beneficial technical effects of this utility model are as follows: The coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided in this application connects the first motor protection switch in series with the main contacts of the first contactor to the first motor; the second motor protection switch in series with the main contacts of the second contactor to the second motor; the third motor protection switch in series with the main contacts of the third contactor to the third motor; and the fourth motor protection switch in series with the main contacts of the fourth contactor to the fourth motor. One end of the control circuit breaker is connected to the power supply, and the other end of the control circuit breaker is connected to the switching power supply, which is connected to the programmable logic controller (PLC). The main circuit is coupled to the PLC, and the detection equipment on the G1# conveyor belt, X1# conveyor belt, X2# conveyor belt, X3# conveyor belt, X1# silo, X2# silo, and X3# silo are all connected to the PLC. This improves production efficiency, reduces labor costs, and enables more timely and efficient coordinated control. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the coordinated control system for multiple unloading conveyor belts in a concentrate yard provided in this embodiment of the utility model.

[0018] Figure 2 This is a circuit diagram of the main circuit in the coordinated control system of multiple unloading conveyor belts in a concentrate stockpile provided in this embodiment of the utility model.

[0019] Figure 3 This is the circuit of the output module in the coordinated control system of multiple unloading conveyor belts in the concentrate stockpile provided in this embodiment of the utility model.

[0020] Figure 4 This is the control circuit of the coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided in this embodiment of the utility model. Figure 1 .

[0021] Figure 5 This is the control circuit of the coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided in this embodiment of the utility model. Figure 2 .

[0022] Figure 6 This is the control circuit of the coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided in this embodiment of the utility model. Figure 3 .

[0023] In the diagram, 1 is the main circuit; 10 is the first branch; 20 is the second branch; 30 is the third branch; and 40 is the fourth branch. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Reference Figures 1 to 6 This utility model discloses a collaborative control system for multiple unloading conveyor belts in a concentrate stockpile, which is used for intelligent collaborative control of conveyor belt failure and full-load transfer, and transports materials to the silo via conveyor belts.

[0026] Among them, reference Figure 1 The on-site equipment includes G1# belt conveyor, X1# belt conveyor, X2# belt conveyor, X3# belt conveyor, X1# silo, X2# silo, and X3# silo.

[0027] Specifically, belt conveyors X1#, X2#, and X3# are all located on the same side of belt conveyor G1#. The extension directions of belt conveyors X1#, X2#, and X3# are all perpendicular to the extension direction of belt conveyor G1#. Belt conveyors X1#, X2#, and X3# are spaced apart along the extension direction of belt conveyor G1#. On the side of belt conveyor G1# facing belt conveyor X1#, unloaders 1# and 2# are installed. Unloader 1# corresponds to belt conveyor X1#, and unloader 2# corresponds to belt conveyor X2#. Belt conveyor G1# is equipped with a first motor M11, belt conveyor X1# with a second motor M12, belt conveyor X2# with a third motor M13, and belt conveyor X3# with a fourth motor M14.

[0028] During material conveying, when the #1 unloader is lowered, the material is conveyed to the #1 silo via the #1 belt conveyor; when the #1 unloader is raised and the #2 unloader is lowered, the material is conveyed to the #2 silo via the #2 belt conveyor; when the #1 unloader and the #2 unloader are raised simultaneously, the material is conveyed to the #3 silo via the third belt conveyor.

[0029] In this embodiment, the X1# hopper is located at the lower part of the end of the X1# belt conveyor that is away from the G1# belt conveyor, and a first radar level gauge is installed on the upper part of the X1# hopper; the X2# hopper is located at the lower part of the end of the X2# belt conveyor that is away from the G1# belt conveyor, and a second radar level gauge is installed on the upper part of the X2# hopper; the X3# hopper is located at the lower part of the end of the X3# belt conveyor that is away from the G1# belt conveyor, and a third radar level gauge is installed on the upper part of the X3# hopper.

[0030] The belt conveyors operate in a "one-in-operation, two-in-standby" mode, meaning only one belt conveyor is running at a time, while the other two are in standby mode. Each hopper is equipped with a radar level gauge to monitor the material level in real time.

[0031] In this embodiment, the field equipment also includes a first pull rope switch, a second pull rope switch, a third pull rope switch, a fourth pull rope switch, a first deviation switch, a second deviation switch, a third deviation switch, a fourth deviation switch, a first changeover switch, a second changeover switch, a third changeover switch, and a fourth changeover switch.

[0032] The first pull rope switch is installed at the head of the G1# belt conveyor, the second pull rope switch is installed at the head of the X1# belt conveyor, the third pull rope switch is installed at the head of the X2# belt conveyor, and the fourth pull rope switch is installed at the head of the X3# belt conveyor. The first belt misalignment switch is installed on the side of the G1# belt conveyor, the second belt misalignment switch is installed on the side of the X1# belt conveyor, the third belt misalignment switch is installed on the side of the X2# belt conveyor, and the fourth belt misalignment switch is installed on the side of the X3# belt conveyor.

[0033] Specifically, the first, second, third, and fourth transfer switches are respectively installed on the local control boxes of the G1#, X1#, X2#, and X3# belt conveyors.

[0034] Continue to refer to Figures 2 to 6The coordinated control system for multiple unloading conveyor belts in a concentrate stockpile provided in this embodiment includes a main circuit 1 and a control circuit. The main circuit 1 includes a first branch 10, a second branch 20, a third branch 30, and a fourth branch 40 connected in parallel. The first branch 10 includes a first motor protection switch QF01 and a first contactor KM01. The main contacts of the first motor protection switch QF01 and the first contactor KM01 are connected in series to the first motor M11 on the G1# conveyor belt. The second branch 20 includes a second motor protection switch QF02 and a second contactor KM02. The main contacts of QF02 and the second contactor KM02 are connected in series to the second motor M12 on the X1# belt conveyor; the third branch 30 includes the third motor protection switch QF03 and the third contactor KM03, and the main contacts of the third motor protection switch QF03 and the third contactor KM03 are connected in series to the third motor M13 on the X2# belt conveyor; the fourth branch 40 includes the fourth motor protection switch QF04 and the fourth contactor KM04, and the main contacts of the fourth motor protection switch QF04 and the fourth contactor KM04 are connected in series to the fourth motor M14 on the X3# belt conveyor.

[0035] Specifically, one end of the first motor protection switch QF01 is connected to the power supply terminal, and the other end of the first motor protection switch QF01 is connected in series with the main contacts of the first contactor KM01 and then connected to the first motor M11; that is, the power supply current flows into the first motor M11 through the first motor protection switch QF01 and the first contactor KM01. One end of the second motor protection switch QF02 is connected to the power supply terminal, and the other end of the second motor protection switch QF02 is connected in series with the main contacts of the second contactor KM02 and then connected to the second motor M12; that is, the power supply current flows into the second motor M12 through the second motor protection switch QF02 and the second contactor KM02. One end of the third motor protection switch QF03 is connected to the power supply terminal, and the other end of the third motor protection switch QF03 is connected in series with the main contacts of the third contactor KM03 and then connected to the third motor M13; that is, the power supply current flows into the third motor M13 through the third motor protection switch QF03 and the third contactor KM03. One end of the fourth motor protection switch QF04 is connected to the power supply terminal, and the other end of the fourth motor protection switch QF04 is connected in series with the main contacts of the fourth contactor KM04 and then connected to the fourth motor M14; that is, the power supply current flows into the fourth motor M14 through the fourth motor protection switch QF04 and the fourth contactor KM04.

[0036] In this embodiment, the first motor protection switch QF01 to the fourth motor protection switch QF04 are all circuit breakers with thermal relays for overload and short circuit protection.

[0037] The control circuit includes a programmable logic controller (PLC), a switching power supply (G01, 24V), and a control circuit breaker (QF05). One end of the control circuit breaker (QF05) is connected to the power supply, and the other end is connected to the switching power supply (G01). The switching power supply (G01) is connected to the PLC. The main circuit 1 is coupled to the PLC. The detection equipment on the G1# belt conveyor, X1# belt conveyor, X2# belt conveyor, X3# belt conveyor, X1# silo, X2# silo, and X3# silo are all connected to the PLC. This setup can improve the level of intelligent production, reduce manpower, and achieve intelligent collaborative control, thereby reducing production accidents and improving production efficiency.

[0038] It should be noted that the detection devices on the G1# belt conveyor are: a first changeover switch, a first pull rope switch, a first deviation switch, a first electromagnetic switch, a second electromagnetic switch, a third electromagnetic switch, and a fourth electromagnetic switch; the detection devices on the X1# belt conveyor are: a second changeover switch, a second pull rope switch, and a second deviation switch; the detection devices on the X2# belt conveyor are: a third changeover switch, a third pull rope switch, and a third deviation switch; the detection devices on the X3# belt conveyor are: a fourth changeover switch, a fourth pull rope switch, and a fourth deviation switch; the detection devices on the X1# silo are: a first radar level gauge; the detection devices on the X2# silo are: a second radar level gauge; and the detection devices on the X3# silo are: a third radar level gauge.

[0039] Specifically, the switching power supply G01 is connected to the power supply terminal through the control circuit breaker QF05, converting 220V AC power to 24V DC power to provide 24V voltage for the programmable logic controller (PLC) and relay coils.

[0040] The programmable logic controller (PLC) and related electrical components are installed in an electrical cabinet, which is then installed on-site.

[0041] Furthermore, in this embodiment, the control circuit also includes an industrial computer. The programmable logic controller (PLC) is connected to the industrial computer via an Ethernet communication interface. The industrial computer runs WINCC V7.5SP2 monitoring software, providing an operation interface and displaying equipment status.

[0042] Specifically, the instruction signals of the industrial control computer's human-machine interface are communicated via Ethernet to exchange data with the programmable logic controller (PLC).

[0043] The programmable logic controller (PLC) is used to collect field data and control various field devices. In this embodiment, a Siemens S7 15000 PLC is used. The PLC's CPU (central processing unit) is connected to the communication port on the industrial computer via Ethernet for data exchange.

[0044] The industrial control computer is equipped with Siemens WINCC V7.5 SP2 monitoring software and TIA Portal V17 programming software. WINCC V7.5 SP2 is used to create a human-machine interface, facilitating operators' control of field equipment and ensuring smooth production. TIA Portal V17 software is used for hardware configuration and software programming of the programmable logic controller (PLC).

[0045] Reference Figure 3 In this embodiment, the control circuit also includes an output module, which is connected to the digital output terminal of the programmable logic controller. The No. 1 unloader and the No. 2 unloader on the main circuit 1 and the G1# belt conveyor are both connected to the output module.

[0046] In this embodiment, the output module includes a first relay J1KA1, a second relay J1KA2, a third relay J1KA3, a fourth relay J1KA4, a fifth relay J1KA5, a sixth relay J1KA6, a seventh relay J1KA7, and an eighth relay J1KA8. The digital output terminals Q0.0 to Q0.7 of the programmable logic controller (PLC) are respectively connected to the coil terminals A1 of the first relay J1KA1 to the eighth relay J1KA8. The coil terminal A2 of each relay is connected to the negative terminal of the control power supply.

[0047] Among them, one end of the normally open contact terminal NO of the first relay J1KA1 to the fourth relay J1KA4 is connected to the coil terminal A1 of the first contactor KM01 to the fourth contactor KM04 respectively, and the other end of the normally open contact terminal NO of the first relay J1KA1 to the fourth relay J1KA4 is connected to the live wire L1 (220V AC), and the coil terminal A2 of the first contactor KM01 to the fourth contactor KM04 is connected to the neutral wire N.

[0048] Specifically, the programmable logic controller (PLC) controls the first contactor KM01 via the first relay J1KA1, driving the first motor M11; it controls the second contactor KM02 via the second relay J1KA2, driving the second motor M12; it controls the third contactor KM03 via the third relay J1KA3, driving the third motor M13; and it controls the fourth contactor KM04 via the fourth relay J1KA4, driving the fourth motor M14. In other words, the digital output terminals of the PLC control the corresponding contactor coils via relays J1KA1 to J1KA4, thereby controlling the start and stop of the motors in each belt conveyor.

[0049] Among them, one end of the normally open contact terminals NO of the fifth relay J1KA5 to the eighth relay J1KA8 are respectively connected to the up solenoid valve of the 1# unloader, the down solenoid valve of the 1# unloader, the up solenoid valve of the 2# unloader, and the down solenoid valve of the 2# unloader. The other ends of the normally open contact terminals NO of the fifth relay J1KA5 to the eighth relay J1KA8 are all connected to the positive pole of the control power supply. The up solenoid valve of the 1# unloader, the down solenoid valve of the 1# unloader, the up solenoid valve of the 2# unloader, and the down solenoid valve of the 2# unloader are all connected to the negative pole of the control power supply.

[0050] Specifically, the programmable logic controller PLC controls the up solenoid valve of the 1# unloader through the fifth relay J1KA5 to drive the 1# unloader to rise; controls the down solenoid valve of the 1# unloader through the sixth relay J1KA6 to drive the 1# unloader to descend; controls the up solenoid valve of the 2# unloader through the seventh relay J1KA7 to drive the 2# unloader to rise; controls the down solenoid valve of the 2# unloader through the eighth relay J1KA8 to drive the 2# unloader to descend. That is to say, the digital output terminals of the PLC respectively control the solenoid valves of the corresponding unloaders through the fifth relay J1KA5 to the eighth relay J1KA8 to achieve interlocking control.

[0051] Continue to refer to Figure 4 and Figure 5 In this embodiment, I0.0 to I0.7 of the digital input terminals of the programmable logic controller PLC are respectively connected to the first change-over switch on the G1# belt conveyor, the auxiliary normally open contact of the first contactor KM01, the fault signal contact of the first motor protection switch QF01, the first pull cord switch on the G1# belt conveyor, the first deviation switch on the G1# belt conveyor, the second change-over switch on the X1# belt conveyor, the auxiliary normally open contact of the second contactor KM02, and the fault signal contact of the second motor protection switch QF02.

[0052] Specifically, I0.0 of the digital input terminals of the programmable logic controller PLC is connected to the first change-over switch on the G1# belt conveyor to collect the remote or local status information of the G1# belt conveyor; I0.1 of the digital input terminals of the programmable logic controller PLC is connected to the auxiliary normally open contact of the first contactor KM01 to collect the operation information of the G1# belt conveyor; I_{0.2} of the digital input terminals of the programmable logic controller PLC is connected to the fault signal contact of the first motor protection switch QF01 to collect the fault information of the G1# belt conveyor; I0.3 of the digital input terminals of the programmable logic controller PLC is connected to the first pull cord switch on the G1# belt conveyor to monitor the pull cord condition of the G1# belt conveyor; I0.4 of the digital input terminals of the programmable logic controller PLC is connected to the first deviation switch on the G^{#} belt conveyor to monitor the deviation condition of the G1# belt conveyor.

[0053] Specifically, the digital input terminals I0.5 to I0.7 of the programmable logic controller (PLC) are connected to the second changeover switch, the auxiliary normally open contact of the second contactor KM02, and the fault signal contact of the second motor protection switch QF02 on the X1# belt conveyor, respectively; the digital input terminals I1.0 to I1.7 of the PLC are connected to the second pull rope switch, the second belt misalignment switch, the third changeover switch, the auxiliary normally open contact of the third contactor KM03, the fault signal contact of the third motor protection switch QF03, the third pull rope switch, the third belt misalignment switch, and the fourth changeover switch on the X3# belt conveyor, respectively; and the digital input terminals I2.0 to I2.3 of the PLC are connected to the auxiliary normally open contact of the fourth contactor KM04, the fault signal contact of the fourth motor protection switch QF04, the fourth pull rope switch, and the fourth belt misalignment switch on the X3# belt conveyor, respectively.

[0054] It should be noted that the functions of connecting the second changeover switch, the auxiliary normally open contact of the second contactor KM02, the fault signal contact of the second motor protection switch QF02, the second pull rope switch, and the second deviation switch to the digital input terminal of the programmable logic controller (PLC) are the same as those of connecting the first changeover switch, the auxiliary normally open contact of the first contactor KM01, the fault signal contact of the first motor protection switch QF01, the first pull rope switch, and the first deviation switch to the digital input terminal of the PLC, and will not be elaborated upon here.

[0055] Furthermore, the functions of connecting the third changeover switch, the auxiliary normally open contact of the third contactor KM03, the fault signal contact of the third motor protection switch QF03, the third pull rope switch, and the third deviation switch to the digital input terminal of the programmable logic controller (PLC) are the same as those of connecting the first changeover switch, the auxiliary normally open contact of the first contactor KM01, the fault signal contact of the first motor protection switch QF01, the first pull rope switch, and the first deviation switch to the digital input terminal of the PLC, and will not be elaborated upon here.

[0056] In this embodiment, the digital input terminals I2.4 and I2.5 of the programmable logic controller are connected to the first and second electromagnetic switches of the No. 1 unloader, respectively, and the digital input terminals I2.6 and I2.7 of the programmable logic controller are connected to the third and fourth electromagnetic switches of the No. 2 unloader, respectively.

[0057] Specifically, the digital input terminals I2.4 and I2.5 of the programmable logic controller (PLC) are connected to the first electromagnetic switch and the second electromagnetic switch, respectively, to collect the information of unloader #1 rising to the correct position and unloader #1 falling to the correct position; the digital input terminals I2.6 and I2.7 of the PLC are connected to the third electromagnetic switch and the fourth electromagnetic switch, respectively, to collect the information of unloader #2 rising to the correct position and unloader #2 falling to the correct position.

[0058] Continue to refer to Figure 6 In this embodiment, the analog input modules AI01 to AI03 of the programmable logic controller (PLC) are respectively connected to the first radar level gauge configured on the X1# silo, the second radar level gauge configured on the X2# silo, and the third radar level gauge configured on the X3# silo.

[0059] The coordinated control system for multiple unloading conveyor belts in the concentrate stockpile provided in this embodiment includes two scenarios: intelligent transfer in case of failure and intelligent transfer when the hopper is full. Specifically, intelligent transfer in case of failure involves the following: when an abnormal signal (including mechanical failure, belt misalignment, or emergency pull rope) is received from any of the operating unloading conveyor belts (i.e., any one of X1#, X2#, and X3#), the control system immediately stops that unloading conveyor belt. It then determines whether the other two unloading conveyor belts meet the starting conditions (including no mechanical failure, no belt misalignment, and no emergency pull rope). If only one unloading conveyor belt meets the starting conditions, and the hopper below that unloading conveyor belt is not full, then that unloading conveyor belt is started; if both unloading conveyor belts meet the starting conditions, the material level in the hopper below the unloading conveyor belts is compared, and the unloading conveyor belt with the lower material level is started first; otherwise, the feeding and unloading conveyor belts of G1# are stopped.

[0060] The full-warehouse intelligent transfer system works as follows: when the hopper below the currently operating unloading conveyor is full, it checks whether the other two unloading conveyors meet the starting conditions (including no mechanical failures, no belt misalignment, and no emergency pull ropes). If only one unloading conveyor meets the starting conditions, and the hopper below it is not full, then that unloading conveyor is started. If both unloading conveyors meet the starting conditions, the material level in the hopper below each unloading conveyor is compared, and the unloading conveyor with the lower material level is started first. Otherwise, the feeding and unloading conveyors of G1# are stopped.

[0061] Specifically, the intelligent fault transfer method control process is as follows: (taking X1# belt conveyor as an example, the logic for X2# and X3# belt conveyors is the same):

[0062] S11: Upon receiving a fault signal, misalignment signal, or pull rope signal from X1# conveyor belt, immediately stop X1# conveyor belt.

[0063] Specifically, the triggering conditions are: when the following signals appear on the running unloading conveyor belt (i.e., X1# conveyor belt): equipment fault signal, belt misalignment signal, or emergency stop pull rope signal, the faulty conveyor belt (i.e., X1# conveyor belt) shall be stopped immediately.

[0064] S12: Determine whether X2# and X3# belt conveyors meet the starting conditions, including: no faults, no deviation, and no pull ropes. If X2# belt conveyor meets the starting conditions and X2# hopper is not full, but X3# belt conveyor does not meet the starting conditions, execute steps S111-S114; if X3# belt conveyor meets the starting conditions and X3# hopper is not full, but X2# belt conveyor does not meet the starting conditions, execute steps S121-S123; if both X2# and X3# belt conveyors meet the starting conditions, execute step S131; otherwise, stop the feeding and unloading belt conveyor G1#.

[0065] Specifically, scanning the status of the backup conveyor belts (i.e., X2# and X3# conveyor belts) includes no fault alarms, no belt misalignment signals, and no emergency stop triggers.

[0066] The selection strategies are as follows: 1. Select single available: Start the conveyor belt when the corresponding hopper is not full; stop the feeding conveyor belt when the hopper is full. 2. Select dual available: Prioritize starting the unloading conveyor belt with the lower material level.

[0067] 1) When X2# belt conveyor meets the start-up conditions and X2# hopper is not full, but X3# belt conveyor does not meet the start-up conditions:

[0068] S111: Start X2# belt conveyor;

[0069] S112: Receives the X2# belt conveyor running signal, delays for 5 seconds, and drops the 2# unloader.

[0070] S113: Receive the signal that the No. 2 unloader has descended to the designated position and raise the No. 1 unloader.

[0071] S114: Received the signal that the No. 1 unloader has risen to the correct position, and the switching is complete.

[0072] 2) When X3# conveyor belt is ready to start and X3# hopper is not full, but X2# conveyor belt is not ready to start:

[0073] S121: Start X3# belt conveyor;

[0074] S122: Receive the X3# belt conveyor running signal, delay for 5 seconds, and lift the 1# unloader.

[0075] S123: Received the signal that the No. 1 unloader has risen to the correct position, and the switching is complete.

[0076] 3) When both X2# and X3# belt conveyors meet the start-up requirements:

[0077] S131: Compare the material levels in silos X2# and X3#. When the material level in silo X2# is low, execute steps S111-S114; when the material level in silo X3# is low, execute steps S121-S123.

[0078] 2. Full-warehouse intelligent transfer method (taking X1# belt conveyor as an example; the logic for X2# and X3# belt conveyors is the same):

[0079] S21: The material level in hopper X1# is higher than the set full hopper height for 5 seconds.

[0080] Specifically, the trigger condition is that the X1# hopper corresponding to the running unloading conveyor belt (i.e., X1# conveyor belt) is full.

[0081] S22: Determine whether X2# and X3# belt conveyors meet the starting conditions, including: no faults, no deviation, and no pull ropes. If X2# belt conveyor meets the starting conditions and X2# hopper is not full, but X3# belt conveyor does not meet the starting conditions, execute steps S211-S214; if X3# belt conveyor meets the starting conditions and X3# hopper is not full, but X2# belt conveyor does not meet the starting conditions, execute steps S221-S223; if both X2# and X3# belt conveyors meet the starting conditions, execute step S231; otherwise, stop the feeding and unloading belt conveyor G1#.

[0082] Specifically, scanning the status of the backup conveyor belts (X2# and X3#) includes no fault alarms, no belt misalignment signals, and no emergency stop triggers.

[0083] The selection strategies are as follows: 1. Select single available: Start the conveyor belt when the corresponding hopper is not full; stop the feed conveyor belt when the hopper is full. 2. Select dual available: Prioritize starting the conveyor belt with the lower material level.

[0084] Among them, the full-load conveyor belts will be shut down.

[0085] 1) When X2# belt conveyor meets the start-up conditions and X2# hopper is not full, but X3# belt conveyor does not meet the start-up conditions:

[0086] S211: Start X2# belt conveyor;

[0087] S212: Receives the X2# belt conveyor running signal, delays for 5 seconds, and drops the 2# unloader.

[0088] S213: Receive the signal that the #2 unloader has descended to the designated position and raise the #1 unloader.

[0089] S214: Receive the signal that the #1 unloader has risen to the position, delay for 10 seconds, stop the X1# belt conveyor, and the switching is complete.

[0090] 2) When the X3# belt conveyor has the start condition and the X3# bin is not full, and the X2# belt conveyor does not have the start condition:

[0091] S221: Start the X3# belt conveyor;

[0092] S222: Receive the running signal of the X3# belt conveyor, delay for 5 seconds, and lift the No. 1 discharger.

[0093] S223: Receive the signal that the No. 1 discharger has risen in place, delay for 10 seconds, stop the X1# belt conveyor, and the switching is completed.

[0094] 3) When both the X2# belt conveyor and the X3# belt conveyor have the start condition:

[0095] S231: Compare the material level heights of the X2# bin and the X3# bin. When the material level of the X2# bin is low, execute the steps of S211 - S214; when the material level of the X3# bin is low, execute the steps of S221 - S223.

[0096] Among them, the collaborative control system for multiple ore - unloading belt conveyors in the concentrate yard provided in this embodiment is based on the industrial Ethernet architecture and the automation control system. Through high - precision radar level gauges, it can collect the material height data of each bin in real time. When detecting the full - bin state of the bin, the system automatically executes the optimal switching strategy; a fast fault response mechanism is constructed to perform millisecond - level diagnosis and linkage control on the abnormal operation of the belt conveyor (including mechanical failures, belt deviation, and emergency pull ropes, etc.). This invention significantly improves the reliability and continuity of the material transfer system through multi - dimensional data fusion and intelligent decision - making.

[0097] For the collaborative control system for multiple ore - unloading belt conveyors in the concentrate yard provided in this application, the main contact of the first motor protection switch and the first contactor are connected in series to the first motor; the main contact of the second motor protection switch and the second contactor are connected in series to the second motor; the main contact of the third motor protection switch and the third contactor are connected in series to the third motor; the main contact of the fourth motor protection switch and the fourth contactor are connected in series to the fourth motor; one end of the control circuit breaker is connected to the power supply end, the other end of the control circuit breaker is connected to the switching power supply, the switching power supply is connected to the programmable logic controller; the main circuit 1 is coupled to the programmable logic controller; the detection devices on the G1# belt conveyor, X1# belt conveyor, X2# belt conveyor, X3# belt conveyor, X1# bin, X2# bin, and X3# bin are all connected to the programmable logic controller; thereby, the production efficiency is improved, the labor cost is reduced, and at the same time, the collaborative regulation is carried out more timely and efficiently.

[0098] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0099] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A coordinated control system for multiple unloading conveyor belts in a concentrate stockpile, used for coordinated control of conveyor belt failure and full-load transfer, and for conveying materials to the silo via conveyor belts, characterized in that; Includes the main circuit and the control circuit; The main circuit includes a first branch, a second branch, a third branch, and a fourth branch connected in parallel. The first branch includes a first motor protection switch and a first contactor. The main contacts of the first motor protection switch and the first contactor are connected in series to the first motor on the G1# belt conveyor. The second branch includes a second motor protection switch and a second contactor. The main contacts of the second motor protection switch and the second contactor are connected in series to the second motor on the X1# belt conveyor. The third branch includes a third motor protection switch and a third contactor. The main contacts of the third motor protection switch and the third contactor are connected in series to the third motor on the X2# belt conveyor. The fourth branch includes a fourth motor protection switch and a fourth contactor. The main contacts of the fourth motor protection switch and the fourth contactor are connected in series to the fourth motor on the X3# belt conveyor. The control circuit includes a programmable logic controller, a switching power supply, and a control circuit breaker. One end of the control circuit breaker is connected to the power supply, and the other end of the control circuit breaker is connected to the switching power supply. The switching power supply is connected to the programmable logic controller. The main circuit is coupled to the programmable logic controller (PLC), and the detection equipment on the G1# belt conveyor, the X1# belt conveyor, the X2# belt conveyor, the X3# belt conveyor, the X1# silo, the X2# silo, and the X3# silo is also connected to the PLC.

2. The coordinated control system for multiple unloading conveyor belts in a concentrate stockpile according to claim 1, characterized in that: The first motor protection switch, the second motor protection switch, the third motor protection switch, and the fourth motor protection switch are all circuit breakers using thermal relays.

3. The coordinated control system for multiple unloading conveyor belts in a concentrate stockpile according to claim 1, characterized in that: The control circuit also includes an output module, which is connected to the digital output terminal of the programmable logic controller. The main circuit and the No. 1 and No. 2 unloaders on the G1# belt conveyor are all connected to the output module.

4. The coordinated control system for multiple unloading conveyor belts in a concentrate stockpile according to claim 3, characterized in that: The output module includes a first relay, a second relay, a third relay, a fourth relay, a fifth relay, a sixth relay, a seventh relay, and an eighth relay. The digital output terminals Q0.0 to Q0.7 of the programmable logic controller are respectively connected to the coil terminals A1 of the first relay to the eighth relay, and the coil terminal A2 of each relay is connected to the negative terminal of the control power supply.

5. The coordinated control system for multiple unloading conveyor belts in a concentrate stockpile according to claim 4, characterized in that: One end of the normally open contact terminal NO of the first relay to the fourth relay is connected to the coil terminal A1 of the first contactor to the fourth contactor, and the other end of the normally open contact terminal NO of the first relay to the fourth relay is connected to the live wire L1. The coil terminal A2 of the first contactor to the fourth contactor is connected to the neutral wire N.

6. The coordinated control system for multiple unloading conveyor belts in a concentrate stockpile according to claim 5, characterized in that: One end of the normally open contact terminal NO of the fifth to the eighth relays is connected to the rising solenoid valve of the 1# unloader, the falling solenoid valve of the 1# unloader, the rising solenoid valve of the 2# unloader, and the falling solenoid valve of the 2# unloader, respectively. The other end of the normally open contact terminal NO of the fifth to the eighth relays is connected to the positive terminal of the control power supply. The rising solenoid valve of the 1# unloader, the falling solenoid valve of the 1# unloader, the rising solenoid valve of the 2# unloader, and the falling solenoid valve of the 2# unloader are all connected to the negative terminal of the control power supply.

7. The coordinated control system for multiple unloading conveyor belts in a concentrate stockpile according to claim 1, characterized in that: The digital input terminals I0.0 to I0.7 of the programmable logic controller are respectively connected to the first changeover switch on the G1# belt conveyor, the auxiliary normally open contact of the first contactor, the fault signal contact of the first motor protection switch, the first pull rope switch on the G1# belt conveyor, the first belt misalignment switch on the G1# belt conveyor, the second changeover switch on the X1# belt conveyor, the auxiliary normally open contact of the second contactor, and the fault signal contact of the second motor protection switch.

8. The coordinated control system for multiple unloading conveyor belts in a concentrate stockpile according to claim 1, characterized in that: The digital input terminals I1.0 to I1.7 of the programmable logic controller are respectively connected to the second pull rope switch on the X1# belt conveyor, the second misalignment switch on the X1# belt conveyor, the third changeover switch on the X2# belt conveyor, the auxiliary normally open contact of the third contactor, the fault signal contact of the third motor protection switch, the third pull rope switch on the X2# belt conveyor, the third misalignment switch on the X2# belt conveyor, and the fourth changeover switch on the X3# belt conveyor.

9. The coordinated control system for multiple unloading conveyor belts in a concentrate stockpile according to claim 1, characterized in that: The digital input terminals I2.0 to I2.3 of the programmable logic controller are respectively connected to the auxiliary normally open contact of the fourth contactor, the fault signal contact of the fourth motor protection switch, the fourth pull rope switch on the X3# belt conveyor, and the fourth belt misalignment switch on the X3# belt conveyor. The digital input terminals I2.4 and I2.5 of the programmable logic controller are respectively connected to the first electromagnetic switch and the second electromagnetic switch of the 1# unloader on the G1# belt conveyor. The digital input terminals I2.6 and I2.7 of the programmable logic controller are respectively connected to the third electromagnetic switch and the fourth electromagnetic switch of the 2# unloader on the G1# belt conveyor.

10. The coordinated control system for multiple unloading conveyor belts in a concentrate stockpile according to claim 1, characterized in that: The analog input modules AI01 to AI03 of the programmable logic controller are respectively connected to the first radar level gauge configured on the X1# silo, the second radar level gauge configured on the X2# silo, and the third radar level gauge configured on the X3# silo.

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