Multi-stage movable belt conveyor control system

Abstract

The utility model discloses a multi-stage movable belt conveyor control system which comprises a multi-stage belt conveyor, an automatic control cabinet, a power supply feeder cabinet, a PLC (Programmable Logic Controller) central processing unit and a touch screen, and the PLC central processing unit is connected with the automatic control cabinet, the power supply feeder cabinet and the touch screen as a control module to control the work of the whole system. According to the utility model, mainstream PLC and touch screen automation equipment elements are introduced, remote control is carried out through system programming, and an Ethernet communication mode is adopted for connection, so that one-key automatic control of a plurality of belt conveyors can be completed by using a 3 * 1.5 square control cable as a control line of the multistage belt conveyor, and the operation is simple and convenient. The automatic control system is not influenced no matter the number of the conveyors is increased or decreased or the position of the conveyors is changed, and the multi-stage conveyors can be controlled by only one operator in the control mode, so that the labor cost and the potential safety hazard of operation are greatly reduced; in addition, a control loop adopts a 3 * 1.5 square control cable to complete a series of functions of starting, stopping, fault tripping, starting early warning and starting overtime of a plurality of belt conveyors, so that the use cost of the cable and the difficulty of later fault maintenance are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of conveyors, in particular to a multi-stage movable belt conveyor control system. Background Art

[0002] Belt conveyors are frequently used equipment in mining production. Currently, the conveying length of traditional purchased belt conveyors is severely limited, and can only be 25 meters, which cannot meet the transportation operation needs of mining areas. Therefore, multiple belt conveyors need to be combined and used in the actual production process. Since the control method of the belt conveyor body can only be controlled by on-site operation of the buttons on the control box of the belt conveyor body to control the start and stop, the control method can only be started at the side of the machine. Since the belt conveyor is composed of multiple (commonly 13) belts of different lengths and is more than 300 meters long, it takes one person 15 minutes to complete a start in sequence. This control method brings great manpower expenditure to the operating personnel.

[0003] Furthermore, when one belt malfunctioned and stopped while the others continued to operate, material piles often occurred, significantly increasing the burden on operators. The original design of the belt conveyor only allowed for individual start and stop operations. Frequent starts and stops created significant labor intensity for operators, requiring 24-hour operation. This increased power consumption and mechanical wear. Furthermore, the independent electronic control system posed significant safety risks. With the moving belts exceeding 300 meters in length, the inability to stop all running belts in time in the event of a sudden personal injury or equipment failure created significant safety hazards.

[0004] If wiring is done according to conventional PLC control principles, each belt conveyor PLC-IO point requires at least 9 points (see attached Figure 4As shown), each belt requires 9 wires to complete the signal feedback and drive of a belt. If 13 belts are controlled together, 117 cables are required to complete the automatic control of the belt conveyor. Under this control mode, it is difficult to implement for mobile equipment. Since each belt conveyor is not in a fixed position, it is almost difficult to perform PLC sampling. For example, if the No. 3 belt conveyor and the No. 8 belt conveyor are swapped, or N belt conveyors are removed, the belt conveyor cannot be started because the PIC sampling will be wrong. It can only be restarted after changing the PLC program. It is too difficult to implement in actual work; if 117 control wires are used, it will be even more difficult to disconnect and connect them, because the belt has to be changed every two days. If one of the wire cores fails, the belt conveyor will stop running. Especially when there are many wire cores, it will bring many difficulties to wiring, greatly extending the workers' working hours, and troubleshooting is also a big problem. Due to the high probability of failure caused by the large number of wire cores, it will bring instability to production and extend the time for fault detection and repair. Moreover, since the cable requires many wire cores, it will also increase the procurement cost and increase the investment in production funds. Utility Model Content

[0005] The utility model discloses a multi-stage movable belt conveyor control system, aiming to solve the technical problems raised in the background technology.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A multi-stage movable belt conveyor control system includes a multi-stage belt conveyor, an automation control cabinet, a power feeder cabinet, a PLC central processor and a touch screen;

[0008] The PLC central processor is connected to the automation control cabinet, power feeder cabinet and touch screen as a control module to control the operation of the entire system;

[0009] The multi-stage belt conveyor can be set up in multiple groups according to the conveying length and operation requirements, and can be increased or decreased and moved at any time;

[0010] The automation control cabinet is equipped with a PLC, an intermediate relay and wiring terminals for completing the automation of the conveyor equipment and the process automation control;

[0011] The power feeder cabinet is connected to the automation control cabinet, the touch screen and the PLC central processor, and is used to distribute and provide power to the conveyor equipment.

[0012] Furthermore, the PLC central processor adopts a small PLC of Siemens, model S7-200SMART.

[0013] Furthermore, the touch screen adopts AK display and control touch screen.

[0014] Furthermore, the PLC central processor and the touch screen are connected using Ethernet communication.

[0015] Furthermore, the main power circuit breaker in the power feeder cabinet uses an ABB630A intelligent circuit breaker, which can be remotely controlled to trip.

[0016] Furthermore, each belt conveyor device is equipped with an Omron H3CR time relay to individually control the start time of each unit.

[0017] Furthermore, the belt conveyor control circuit adopts 3*1.5 square control cables.

[0018] The utility model has the following beneficial effects:

[0019] This utility model introduces mainstream PLC and touch screen automation equipment components, performs remote control through the system, and adopts Ethernet communication connection, so that the multi-stage belt conveyor control circuit only uses 3*1.5 square control cables to complete one-button automatic control of multiple belt conveyors. Whether adding, reducing or relocating the conveyor position, it will not affect the automatic control system.

[0020] In terms of control methods, only one operator is needed to complete the control of multi-stage conveyors, which greatly saves labor costs and operational safety hazards. In addition, the control loop uses 3*1.5 square control cables to complete the start, stop, fault tripping, start warning, and start timeout functions of multiple belt conveyors, effectively reducing the cost of cable use and the difficulty of subsequent fault inspection and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of the control system of the utility model.

[0022] Figure 2 This is the control circuit principle diagram of the control system of this utility model.

[0023] Figure 3 This is the wiring diagram of the I / O points of the PLC controller of this utility model.

[0024] Figure 4 This is the current conventional PLC control principle wiring diagram mentioned in the background technology of this utility model. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall within the scope of protection of the present application.

[0026] Example:

[0027] Reference Figure 1 , a multi-stage movable belt conveyor control system, comprising a multi-stage belt conveyor 1, an automation control cabinet 2, a power feeder cabinet 3, a PLC central processor 4 and a touch screen 5;

[0028] The PLC central processor 4 is connected to the automation control cabinet 2, the power feeder cabinet 3 and the touch screen 5 as a control module to control the operation of the entire system;

[0029] The multi-stage belt conveyor 1 can be set up in multiple groups according to the conveying length and operation requirements, and can be increased or decreased and moved at any time;

[0030] The automation control cabinet 2 is provided with a PLC, an intermediate relay and connection terminals for completing the automation control of the conveyor equipment and the process;

[0031] The power feeder cabinet 3 is connected to the automation control cabinet 2, the touch screen 5 and the PLC central processor 4, and is used to distribute and provide power to the conveyor equipment.

[0032] In this embodiment, the PLC central processor 4 is a small PLC of Siemens, model S7-200SMART.

[0033] In this embodiment, the touch screen 5 adopts an AK display and control touch screen.

[0034] In this embodiment, the PLC central processor 4 and the touch screen 5 are connected using Ethernet communication.

[0035] In this embodiment, the main power circuit breaker in the power feeder cabinet 3 uses an ABB630A intelligent circuit breaker, which can be remotely controlled to trip.

[0036] In this embodiment, each belt conveyor 1 is equipped with an Omron H3CR time relay to individually control the start time of each unit.

[0037] In this embodiment, the control circuit of the belt conveyor 1 adopts 3*1.5 square control cables.

[0038] Reference Figure 2 and Figure 3 , the control principle of the control system of this utility model is as follows:

[0039] 1. Control node KA001 is a one-button start node. This node is used regardless of the number of belts. It not only completes unified startup, but also controls the power supply in a separate circuit, which is not connected to the control circuit of the belt conveyor body. This avoids the risk of phase short circuit caused by each control cabinet taking power separately, and greatly reduces the number of cores in the control cable.

[0040] 2. KA51-62 is the PLC sampling node, and the role of this node in each stage is analyzed through PLC programming.

[0041] (1) Startup phase:

[0042] During the startup process of the belt conveyor, the status of this node will give a signal to the PLC, and the PLC will start calculating the startup time. The startup time is adjusted according to the number of belts. If the startup signal is not fed back within the startup time, the PLC will determine that the startup has failed, shut down and issue an alarm.

[0043] (2) Operation phase:

[0044] Through PLC programming, it is determined that the node is considered to be operating normally after the start-up time. If any belt fails during operation, this point will send a signal to the belt conveyor. After the belt conveyor recognizes the signal, it will issue an alarm and start delayed parking. The parking time is (10S). The purpose of delayed parking is to allow the operating personnel to check the position of the faulty belt and to prevent the material from being pressed onto the belt conveyor at the discharge port.

[0045] (3) Emergency stop:

[0046] There are two ways to perform an emergency stop. One is to directly send a signal to the PLC on the touch screen to stop the intelligent circuit breaker, so that all circuits can be powered off. The second is to use the emergency stop button on the control panel to stop all power.

[0047] This utility model introduces mainstream PLC and touch screen automation equipment components, performs remote control through the system, and adopts Ethernet communication connection, so that the multi-stage belt conveyor control circuit only uses 3*1.5 square control cables to complete one-button automatic control of multiple belt conveyors. Whether adding, reducing or relocating the conveyor position, it will not affect the automatic control system.

[0048] In terms of power consumption, it used to run continuously for a long time, but with the introduction of automation in this system, it has now been changed to intermittent operation, which has greatly saved power consumption costs.

[0049] In terms of control methods, only one operator is required to complete the control of multiple-stage conveyors, greatly saving labor costs and operational safety hazards. In addition, the control circuit uses 3*1.5 square control cables to complete the start, stop, fault tripping, start warning, start timeout and other functions of multiple belt conveyors, effectively reducing cable usage costs and the difficulty of subsequent fault repair. The entire system is operated using a touch screen host computer with a simple and clear screen and clear button functions. With just one button, all belt conveyors can be automatically started in sequence and monitored on the display, which is very convenient.

[0050] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacements described may be partial structures, devices, or method steps, or they may be complete technical solutions. Any equivalent replacements or modifications based on the technical solution and the concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A multi-stage movable belt conveyor control system, characterized in that: It includes multi-stage belt conveyor, automation control cabinet, power feeder cabinet, PLC central processor and touch screen; The PLC central processor is connected to the automation control cabinet, power feeder cabinet and touch screen as a control module to control the operation of the entire system; The multi-stage belt conveyor can be set up in multiple groups according to the conveying length and operation requirements, and can be increased or decreased and moved at any time; The automation control cabinet is equipped with a PLC, an intermediate relay and wiring terminals for completing the automation of the conveyor equipment and the process automation control; The power feeder cabinet is connected to the automation control cabinet, the touch screen and the PLC central processor, and is used to distribute and provide power to the conveyor equipment.

2. A multi-stage movable belt conveyor control system according to claim 1, characterized in that: The PLC central processor adopts a small PLC of Siemens, model S7-200SMART.

3. A multi-stage movable belt conveyor control system according to claim 1, characterized in that: The touch screen adopts AK display and control touch screen.

4. A multi-stage movable belt conveyor control system according to claim 1, characterized in that: The PLC central processing unit and the touch screen are connected by Ethernet communication.

5. A multi-stage movable belt conveyor control system according to claim 1, characterized in that: The main power circuit breaker in the power feeder cabinet uses an ABB630A intelligent circuit breaker, which can be remotely controlled to trip.

6. A multi-stage movable belt conveyor control system according to claim 1, characterized in that: Each belt conveyor device is equipped with an Omron H3CR time relay to individually control the start time of each unit.

7. A multi-stage movable belt conveyor control system according to claim 1, characterized in that: The belt conveyor control circuit adopts 3*1.5 square control cables.

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