Positioning system of belt conveyor protection equipment

Abstract

The utility model discloses a positioning system for belt conveyor protection equipment, which comprises a plurality of protection equipment, a plurality of encoders, a communication bus and a communication gateway, and is characterized in that each encoder is connected with one corresponding protection equipment or paired protection equipment; the communication bus is in jumper connection with the plurality of protection devices and the plurality of encoders, and the plurality of encoders are connected with the communication bus in parallel; the communication bus is connected with the communication gateway, the communication gateway is connected with external control equipment, and the communication bus transmits positioning signals with the communication gateway based on an adopted communication protocol, so that communication interaction between the plurality of protection equipment and the external control equipment is realized. According to the system, a bus control framework is adopted, so that belt protection fault points can be accurately and quickly positioned on the basis of reducing laid cables and simplifying a circuit structure.

Description

Technical Field

[0001] The utility model relates to the technical field of coal equipment control, in particular to a positioning system for belt conveyor protection equipment. Background Art

[0002] The belt conveyor in the raw coal workshop of the washing plant is the longest belt conveyor in the production system of the washing plant. Various protection devices are installed on it. When the belt conveyor has some kind of fault, the corresponding protection device will perform protection actions to protect the belt conveyor.

[0003] In the related art, various protective devices of the belt conveyor are connected in series, such as Figure 1 As shown, the same type of protection devices are connected in series and share a feedback signal. This structure can save PLC points and reduce the cable laying task.

[0004] However, in actual application, the structure of the belt conveyor protection system in the above-mentioned related technology will lead to the following problems: First, since the same type of protection devices are connected to the module points in series, when a certain device takes a protection action, it is impossible to accurately locate which protection action has taken place. Second, if a certain protection device on site has an abnormality such as grounding or short circuit, it will directly affect the power failure of the entire control circuit. If any protection has a problem, all protection devices need to be checked one by one, making fault troubleshooting extremely difficult. Utility Model Content

[0005] The purpose of the present invention is to solve at least one of the above-mentioned technical problems to a certain extent.

[0006] Therefore, the purpose of the utility model is to propose a positioning system for belt conveyor protection equipment. The system adopts a bus control architecture, which can accurately and quickly locate the belt protection fault point on the basis of reducing the laying of cables and simplifying the line structure, thus solving the problems caused by the structure of the current belt conveyor protection system.

[0007] To achieve the above-mentioned purpose, the first aspect of the utility model provides a positioning system for belt conveyor protection equipment, the system comprising: a plurality of protection devices, a plurality of encoders, a communication bus and a communication gateway, wherein:

[0008] Each of the encoders is connected to a corresponding protection device or a pair of protection devices, and the encoder is used to allocate an independent communication address to the corresponding protection device and determine a position code;

[0009] The communication bus jumps the multiple protection devices and the multiple encoders, and the multiple encoders are connected to the communication bus in parallel;

[0010] The communication bus is connected to the communication gateway, and the communication gateway is connected to an external control device. The communication bus transmits a positioning signal based on the adopted communication protocol and the communication gateway to achieve communication interaction between the multiple protection devices and the external control device.

[0011] In addition, the positioning system of the belt conveyor protection device of the utility model embodiment also has the following additional technical features:

[0012] Optionally, in some embodiments, the system further includes: a PLC device, wherein an Ethernet module is internally configured in the PLC device, and a communication connection is established between the communication gateway and the Ethernet module; the PLC device communicates and interacts with the multiple protection devices to control the corresponding protection devices.

[0013] Optionally, in some embodiments, the PLC device further includes: a program writing interface, the PLC device carries a PLC program written based on the program writing interface, wherein the PLC program includes a protection action control program and a data acquisition program for each of the protection devices, and the PLC device is also used to collect operating parameters of the multiple protection devices in real time.

[0014] Optionally, in some embodiments, the system further includes: a host computer, the host computer is connected to the PLC device, the host computer is equipped with a monitoring interface, and the monitoring interface displays the location information of the target protection device that triggers the protection action in real time.

[0015] Optionally, in some embodiments, the host computer further includes: an alarm module, which establishes a wireless communication connection with a mobile terminal of the staff, and the alarm module is used to send protection action alarm information and the location information to the mobile terminal.

[0016] Optionally, in some embodiments, multiple protection devices include: a pull rope protection device, a coal blockage protection device and a deviation protection device, wherein the pull rope protection device and the deviation protection device are arranged individually or in pairs, and the two protection devices in the same pair are respectively arranged on both sides of the belt conveyor.

[0017] Optionally, in some embodiments, the two protection devices in the same pair are respectively connected to the first end of the corresponding encoder, and the second end of the corresponding encoder is connected to the communication bus.

[0018] Optionally, in some embodiments, the encoder further includes: a positioning module, wherein the positioning module is used to collect location information of the corresponding protection device and send the collected location information to the encoder where the encoder is located.

[0019] Optionally, in some embodiments, the communication bus is a Modbus bus, and the cable used by the communication bus is a shielded cable.

[0020] Optionally, in some embodiments, the cable used by the communication bus is a two-core cable.

[0021] The technical solution provided by the embodiment of the utility model brings at least the following beneficial effects: the utility model adopts the control architecture of the bus, introduces an encoder on the original protection device of the belt conveyor, and directly uses the modbus protocol to communicate with the PLC. It can realize the precise positioning of the protection device for protection action without expanding the capacity of the PLC, changing the interlocking relationship, and greatly reducing the positioning and transformation lines, which is conducive to the staff to quickly find the location of the triggering protection. Therefore, the utility model adopts the bus method to realize the communication of belt protection data, which can save a lot of cables, reduce the laying of cables and simplify the line structure, reduce the application cost, and reduce the installation workload; it also realizes the precise positioning of the belt protection, which is conducive to shortening the time for on-site fault handling and improving the safety and reliability of belt conveyor operation.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0024] Figure 1 It is a structural schematic diagram of a belt conveyor protection system in a related embodiment;

[0025] Figure 2 is a structural schematic diagram of another belt conveyor protection system in a related embodiment;

[0026] Figure 3 A structural schematic diagram of a positioning system for a belt conveyor protection device proposed in an embodiment of the utility model;

[0027] Figure 4 The present invention is a schematic structural diagram of a positioning system for a specific belt conveyor protection device proposed in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] It should be noted that in the related technology, the belt conveyor protection equipment in the raw coal workshop of the washing plant generally adopts the following Figure 1 In the connection method of the series connection shown in FIG. 1 , if any protection device has a problem, all protection devices of the same type need to be checked one by one, and the number of times the protection problem causes an impact during the production process is relatively large. In some other embodiments, there are also Figure 2 The parallel connection method shown in the figure, however, requires laying a large number of cables in this type of protection system, and the PLC module also needs to be expanded to feed back each protection signal to the PLC separately. The operating cost of this system architecture is high and the workload is large.

[0030] To this end, the utility model transforms the protection system of the belt conveyor with the goal of quickly determining the belt protection fault point and shortening the impact time, and can achieve precise positioning of the protection system.

[0031] The positioning system of the belt conveyor protection device according to the embodiment of the utility model will be described below with reference to the accompanying drawings.

[0032] Figure 3 A structural schematic diagram of a positioning system for a belt conveyor protection device proposed in an embodiment of the utility model is shown as follows: Figure 3 As shown, the system includes: a plurality of protection devices 10 , a plurality of encoders 20 , a communication bus 30 and a communication gateway 40 .

[0033] Each encoder 20 is connected to a corresponding protection device 10 or a pair of protection devices 10 , and the encoder 20 is used to allocate an independent communication address to the corresponding protection device 10 and determine the position code.

[0034] The communication bus 30 jumps multiple protection devices 10 and multiple encoders 20, and the multiple encoders 20 are connected to the communication bus 30 in parallel.

[0035] The communication bus 30 is connected to the communication gateway 40, and the communication gateway 40 is connected to the external control device. The communication bus 30 transmits the positioning signal based on the adopted communication protocol and the communication gateway 40 to realize the communication interaction between multiple protection devices 10 and the external control device.

[0036] Specifically, the utility model first transforms the protection system of the belt conveyor so as to introduce the encoder 20 into the original protection device of the belt conveyor, for example, the belt protection device model is updated so that it can support the encoding device. Then, a corresponding encoder 20 is installed for each protection device, wherein the encoder 20 can assign an independent communication address to the protection device 10 connected to itself and determine the position code of the protection device.

[0037] As an example, the protection devices targeted by the utility model may include various types of belt conveyor protection devices such as rope pull protection devices, coal blockage protection devices and deviation protection devices. Each type of protection device can be multiple, and the specific number is determined according to actual needs. For example, there are 9 rope pull protection devices, 3 coal blockage protection devices, and 7 pairs of deviation protection devices. The utility model installs a corresponding encoder 20 for each or each pair of protection devices 10, so that each protection device 10 has an independent address, so as to communicate with the PLC device and perform protection control later.

[0038] It should be noted that some protection devices may realize related protection functions in pairs, that is, a pair of protection devices includes two protection devices arranged at different positions. For protection devices operating in pairs, the utility model can set an encoder for a pair of protection devices. Among them, the arrangement of the pull rope protection device and the deviation protection device can be set individually or in pairs.

[0039] In one embodiment of the present invention, when an encoder 20 is provided for a pair of protection devices 10, the structure of the positioning system of the present invention is as follows: Figure 4 The two protection devices in the same pair (in Figure 4 The two protection devices 10 in the same pair are respectively connected to the first end of the corresponding encoder 20, and the second end of the corresponding encoder 20 is connected to the communication bus 30.

[0040] Furthermore, the present invention can also determine the position of each protection device 10 by means of the introduced encoder 20, that is, determine the position code of the corresponding protection device. Specifically, the encoder 20 can implement the position code determination function in a variety of ways. In one embodiment of the present invention, the encoder 20 also includes: a positioning module 21, which is used to collect the position information of the corresponding protection device 10 and send the collected position information to the encoder 20 where it is located.

[0041] Specifically, in this embodiment, the encoder 20 may have a built-in positioning module 21, which may be a GPS device or a UWB positioning device or other types of devices that implement positioning functions. After the encoder is installed, the internal positioning module 21 performs position positioning and sends the positioning information to the encoder 20 where it is located. As another implementation method, the existing technical data for installing the belt conveyor protection device, such as equipment installation layout drawings, etc., can be called to determine the location information of each protection device by analyzing the data. Then, the corresponding position code is determined according to the location information of each protection device. The position code can be a number assigned to each protection device in the belt conveyor system, which is used to distinguish different positions relative to the belt conveyor.

[0042] Therefore, the utility model can realize independent communication of each protection device 10 and determine the position information by installing a corresponding encoder 20 for each protection device 10 and allowing the encoder to perform communication encoding and other processing.

[0043] Continue to refer to Figure 3 The positioning system of the utility model adopts a bus control architecture to jumper all protection devices and corresponding encoders, that is, the bus wiring method is used to realize parallel connection of all encoders 20, complete the wiring of all encoders 20, and then connect each protection device 10 to the corresponding protection encoder 20. This simple and efficient wiring method simplifies the device connection relationship.

[0044] In one embodiment of the utility model, jumper cables can be used for jumpering, and each protection device 10 and the corresponding encoder 20 can be connected to a preset communication bus, that is, each protection device 10 is connected to the corresponding encoder 20, and all the encoders 20 are connected to the communication bus 30 in parallel; and then the communication connection between the communication bus 30 and external control devices such as PLC devices is realized through the communication gateway 40.

[0045] In one embodiment of the present invention, the communication bus 30 is a Modbus bus, the cable used by the communication bus 30 is a shielded cable, and the cable used by the communication bus 30 is a two-core cable.

[0046] Specifically, all encoders 20 can be connected in parallel using a two-core cable to complete the wiring of all encoders 20. The communication bus 30 can support the Modbus communication protocol. Then, each protection device 10 is connected to the corresponding protection encoder 20. The head end of the communication bus 30 is then connected to the communication gateway 40, which can communicate with the PLC device to achieve communication connection between the communication bus 30 and the external control device, which is convenient for subsequent data interaction.

[0047] In one embodiment of the present invention, Figure 4 As shown, the system also includes: a PLC device 50, an Ethernet module is configured inside the PLC device, and a communication connection is established between the communication gateway 40 and the Ethernet module; the PLC device 50 communicates and interacts with multiple protection devices 10 to control the corresponding protection devices.

[0048] Specifically, the external control device may include a PLC device 50. The utility model adopts the Modbus communication protocol to realize the communication between the protection device 10 and the PLC device 50. The protocol adopts a digital serial communication method. The data signal sent by any protection device 10 can be transmitted to the PLC device 50 through the assigned communication address, through the communication bus 30 and the communication gateway 40.

[0049] As a possible implementation method, the Modbus communication protocol is used to realize the communication between each protection device 10 and the corresponding encoder 20 and the PLC device 50, including: realizing data interaction between the communication bus 30 and the Ethernet module of the PLC device 50 through the Modbus communication protocol. Specifically, based on the Modbus communication protocol, a communication connection is established through wireless communication between the Ethernet module inside the PLC device 50 and the above-mentioned communication gateway 40, so that the communication between the protection device 10 and the PLC device 50 can be completed. As mentioned above, in this embodiment, the cable of the bus is a shielded cable with strong anti-interference ability, which can avoid mutual interference between different protection devices and perform parallel communication.

[0050] Furthermore, in this embodiment, the PLC device 50 also includes: a program writing interface, and the PLC device 50 carries a written PLC program based on the program writing interface, wherein the PLC program includes a protection action control program and a data acquisition program for each protection device, and the PLC device 50 is also used to collect the operating parameters of multiple protection devices 10 in real time. Specifically, the utility model can also write a PLC program according to the working requirements of the belt conveyor protection system, and the PLC program is input into the PLC device 50 for storage and operation, so as to control each protection device 10 and realize data acquisition through the PLC program.

[0051] The programmed PLC program includes: a protection action control program and a data acquisition program for each protection device 10. Specifically, in this embodiment, after running the relevant PLC program, the PLC device 50 can control the operation of each protection device, and monitor each protection device 10 by receiving data sent by each protection device and analyzing the data parameter value, determine the status of each protection device 10, and judge whether it has performed a protection action.

[0052] Therefore, the utility model adopts the control architecture of the bus, introduces the encoder, and directly uses the modbus protocol to communicate with the PLC. It can accurately determine the device for protection action without expanding the capacity of the PLC, changing the interlocking relationship, and greatly reducing the lines.

[0053] In one embodiment of the present invention, the external control device may further include a host computer 60. Figure 4 As shown, the host computer 60 is connected to the PLC device 50, and the host computer is equipped with a monitoring interface, which displays the position information of the target protection device that triggers the protection action in real time.

[0054] Specifically, in this embodiment, the host computer screen is compiled, and the location information of each device is directly identified on the host computer screen using the location code of each protection device. Once a protection action is taken, it is displayed on the host computer monitoring screen so that the dispatching personnel can discover it at the first time, which is conducive to shortening the impact time of the accident.

[0055] In an embodiment of the utility model, the host computer 60 of the remote monitoring center is connected to the PLC device 50, the data sent by the PLC device 50 is obtained, and the host computer screen is improved. The protection device that performs the protection action and the device position determined according to the position code of the protection device are displayed in the host computer monitoring screen, so as to realize accurate display of protection faults.

[0056] In specific implementation, each protection device can be displayed at the corresponding position of the belt conveyor model in the upper computer monitoring screen according to the position coding and device control method; according to the protection action monitoring results received by the PLC device in real time, the target protection device currently performing the protection action will be highlighted.

[0057] Furthermore, in one embodiment of the present invention, the host computer 60 also includes: an alarm module 61, which establishes a wireless communication connection with the mobile terminal of the staff, and the alarm module 61 is used to send protection action alarm information and location information to the mobile terminal.

[0058] Specifically, in this embodiment, an alarm module 61 is set for the upper computer 60. When it is determined that a protection action has occurred in a certain protection device 10, the upper computer 60 will also send alarm information including alarm prompt information, the specific location of the protection device 10 and related operation and maintenance suggestions to the mobile terminal of relevant staff who have passed the legality verification in advance, so that the staff can be reminded at any time in various venues.

[0059] In summary, the positioning system of the belt conveyor protection device of the embodiment of the utility model adopts the control architecture of the bus, introduces an encoder on the original protection device of the belt conveyor, and directly uses the modbus protocol to communicate with the PLC. It can realize the precise positioning of the protection device for protection action without expanding the capacity of the PLC, changing the interlocking relationship, and greatly reducing the positioning transformation line, which is conducive to the staff to quickly find the location of the triggering protection. Therefore, the utility model adopts the bus method to realize the communication of belt protection data, which can save a lot of cables, reduce the laying of cables and simplify the line structure, reduce the application cost, and reduce the installation workload; it also realizes the precise positioning of the belt protection, which is conducive to shortening the time for on-site fault handling and improving the safety and reliability of belt conveyor operation.

[0060] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0061] Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A positioning system for a belt conveyor protection device, characterized in that: include: A plurality of protection devices, a plurality of encoders, a communication bus and a communication gateway, wherein: Each of the encoders is connected to a corresponding protection device or a pair of protection devices, and the encoder is used to allocate an independent communication address to the corresponding protection device and determine a position code; The communication bus jumps the multiple protection devices and the multiple encoders, and the multiple encoders are connected to the communication bus in parallel; The communication bus is connected to the communication gateway, and the communication gateway is connected to an external control device. The communication bus transmits a positioning signal based on the adopted communication protocol and the communication gateway to achieve communication interaction between the multiple protection devices and the external control device.

2. The positioning system of the belt conveyor protection device according to claim 1, characterized in that: Also includes: A PLC device, wherein an Ethernet module is configured inside the PLC device, and a communication connection is established between the communication gateway and the Ethernet module; The PLC device communicates and interacts with the multiple protection devices to control corresponding protection devices.

3. The positioning system of the belt conveyor protection device according to claim 2, characterized in that: The PLC device also includes: A program writing interface, the PLC device carries a PLC program written based on the program writing interface, wherein the PLC program includes a protection action control program and a data acquisition program for each of the protection devices, and the PLC device is also used to collect the operating parameters of the multiple protection devices in real time.

4. The positioning system of the belt conveyor protection device according to claim 2, characterized in that: Also includes: A host computer is connected to the PLC device, and the host computer is equipped with a monitoring interface, which displays the position information of the target protection device that triggers the protection action in real time.

5. The positioning system of the belt conveyor protection device according to claim 4, characterized in that: The host computer also includes: An alarm module establishes a wireless communication connection with a mobile terminal of a staff member, and the alarm module is used to send protection action alarm information and the location information to the mobile terminal.

6. The positioning system of the belt conveyor protection device according to claim 1, characterized in that: The multiple protection devices include: rope protection device, coal blocking protection device and deviation protection device, wherein: The pull rope protection device and the deviation protection device are arranged individually or in pairs, and the two protection devices in the same pair are respectively arranged on both sides of the belt conveyor.

7. The positioning system of the belt conveyor protection device according to claim 6, characterized in that: The two protection devices in the same pair are respectively connected to the first ends of the corresponding encoders, and the second ends of the corresponding encoders are connected to the communication bus.

8. The positioning system of the belt conveyor protection device according to claim 1, characterized in that: The encoder further comprises: A positioning module, wherein the positioning module is used to collect the position information of the corresponding protection device and send the collected position information to the encoder where the positioning module is located.

9. The positioning system of the belt conveyor protection device according to claim 1, characterized in that: The communication bus is a Modbus bus, and the cable used by the communication bus is a shielded cable.

10. The positioning system of the belt conveyor protection device according to claim 9, characterized in that: The cable used by the communication bus is a two-core cable.

Images