Electrical automation system for discharging trolley of coke screening building

Abstract

The invention relates to the technical field of metallurgical coking, and discloses an electrical automation system for a coke screening building unloading trolley, which comprises a vehicle-mounted electric control panel cabinet, a plurality of elements are arranged in an element cavity and a wiring cavity, and the elements comprise a frequency converter and a panel cabinet PLC (Programmable Logic Controller); a first touch screen, a disc surface scram button, a main power supply circuit breaker, a rail clamping device release button and a remote control receiver power supply circuit breaker are arranged outside the vehicle-mounted electric control disc cabinet, and a transparent opening and closing door is also arranged outside the vehicle-mounted electric control disc cabinet; the ground signal transfer box is provided with a second touch screen, is connected with the centralized control equipment in a first preset connection mode and is connected with the coke screening building unloading trolley in a second preset connection mode; the centralized control equipment comprises a first host and a second host, and the centralized control equipment is connected with the ground signal transfer box and the coke screening building unloading trolley. Therefore, the electrical automation system for the unloading trolley of the coke screening building is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of metallurgical coking, and particularly to an electrical automation system for a coke screening building discharging trolley. Background Art

[0002] The coke screening building discharging trolley undertakes an important transportation task in the coke production process, and its operating environment is extremely harsh. Since the trolley needs to travel on the belt conveyor, it is impossible to set a closed dust-proof cover on the upper part of the conveyor for negative pressure dust collection, and only local dust collection can be carried out at the discharging place, resulting in extremely high dust concentration of coke powder (with strong conductivity) in the coke screening building. In addition, the high temperature generated by the heat dissipation of coke is superimposed with the high temperature in summer, and factors such as the unreasonable installation position of the electrical control cabinet, resulting in too high temperature inside the electrical control cabinet. Coupled with the imperfect interlock protection measures, it is easy to cause damage to the cable reel, and finally lead to frequent electrical failures of the coke screening building discharging trolley, seriously affecting production efficiency and safety.

[0003] In the existing electrical system of the coke screening building discharging trolley, especially in the electrical system of the coke screening building discharging trolley where all electrical components are placed in a vehicle-mounted electrical control panel cabinet, there are often the following technical problems: First, the existing coke screening building discharging trolley lacks a perfect electrical automation system, mainly relying on manual close-range operation, resulting in low operating efficiency, insufficient safety, and inability to perform remote monitoring and intelligent control. At the same time, the integration degree of the electrical system is low, the signal interaction between devices is complex, the maintenance cost is high, and it is difficult to meet the requirements of modern intelligent control; Second, in the prior art, for the vehicle-mounted electrical control panel cabinet of the electrical system of the coke screening building discharging trolley, the layout of electrical components is not reasonable enough, resulting in inconvenient maintenance, low safety, and non-user-friendly operation. At the same time, the cable connection method is not flexible enough, affecting the convenience of replacement and maintenance; the control method is not perfect enough, lacking interlock protection, there are potential safety hazards; the human-machine interaction interface is not friendly enough, and the operation is not intuitive enough. In addition, the protection measures of the vehicle-mounted electrical control panel cabinet are insufficient, vulnerable to dust intrusion, affecting the service life of electrical components, and further reducing the reliability of the system; Third, the traditional limit switch relies on physical contact triggering, which is easily affected by the harsh environment of the coke screening building, resulting in pollutants accumulating on the mechanical contacts of the limit switch or the striker, thus causing poor contact or failure; the triggering mechanism of the limit switch is too single, once the limit switch fails, it may cause equipment damage or personal injury; the maintenance of the traditional limit switch depends on regular inspection, unable to sense abnormal states in real time, there are potential safety hazards. Summary of the Invention

[0004] This Summary of the Invention section is used to introduce concepts in a brief form, which will be described in detail in the following Detailed Description section. This Summary of the Invention section is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] The present invention proposes an electrical automation system for the coke screening building unloading trolley to solve one or more of the technical problems mentioned in the above Background section.

[0006] The present invention provides an electrical automation system for the coke screening building unloading trolley, including: An on-vehicle electric control cabinet, which has a component chamber and a wiring chamber inside. There is a terminal block inside the wiring chamber, and the terminal block uses quick direct-insert spring self-locking terminals. There are multiple components in the component chamber, and the multiple components at least include an inverter and a cabinet PLC (Programmable Logic Controller); on the surface of the on-vehicle electric control cabinet, there are a first touch screen, a panel emergency stop button, a main power circuit breaker, a rail clamp release button, and a remote control receiver power circuit breaker. There is a transparent opening and closing door outside the first touch screen; the on-vehicle electric control cabinet is embedded in a common cabinet, and the common cabinet is installed on the coke screening building unloading trolley; A ground signal transfer box, which includes a second touch screen. The ground signal transfer box is connected to the centralized control device through a first preset connection method and is connected to the coke screening building unloading trolley through a second preset connection method; A centralized control device, which includes a first host and a second host. The first host is deployed with a video monitoring system, and the second host is deployed with a centralized control system; the centralized control device is connected to the ground signal transfer box through a first preset connection method and is connected to the coke screening building unloading trolley through a second preset connection method.

[0007] Optionally, an electrical automation system for the coke screening building unloading trolley of the present invention further includes: Multiple on-vehicle components, which are carried on the coke screening building unloading trolley. The multiple on-vehicle components include a position code box signal receiver, a remote control receiver, a radar level gauge, a rotary encoder, a blockage switch, a limit switch, a rail clamp release limit switch, an oil pressure switch, an oil pump, a traveling sound and light alarm, a comprehensive fault alarm buzzer, and an on-vehicle emergency stop button; Peripheral devices, which include multiple position code boxes, and the multiple position code boxes send position correction information to the position code box signal receiver.

[0008] Optionally, a PLC is deployed in the panel cabinet, and multiple interlock control strategies are deployed in the PLC control system. The multiple interlock control strategies include at least one of the following: walking action interlock strategy, clamping device action control interlock strategy, emergency stop control strategy, walking speed control strategy, comprehensive fault determination and its interlock strategy; Among them, the walking action interlock strategy is: if the PLC control system receives a walking instruction issued by any device in the first input device group, it determines whether all preset frequency conversion conditions are met. If all preset frequency conversion conditions are met, it sends a start instruction to the frequency converter; The clamping device action control interlock strategy is: if the PLC control system receives a relaxation instruction from the clamping device relaxation button, the PLC control system sends an oil pump start instruction to the oil pump; when the left or right clamping device relaxation limit switch detects that the clamping device has been completely released, or the oil pressure of the oil pump reaches the preset oil pressure threshold, the PLC control system sends a stop instruction to the oil pump; The emergency stop control strategy is: if the PLC control system receives an emergency stop instruction issued by any device in the second input device group, the PLC control system sends a trip instruction to the main power circuit breaker; The walking speed control strategy is: if the PLC control system receives a walking speed instruction issued by any device in the third input device instruction group, it sends a speed adjustment instruction to at least one response component in the first response component group; The comprehensive fault determination interlock strategy is: if the PLC control system receives a fault instruction issued by any device in the fourth input device group, it sends a display instruction to each display device in the first display device group according to the fault instruction, sends a start instruction to the comprehensive fault alarm buzzer, and sends a control instruction to at least one response component in the second response component group.

[0009] Optionally, the installation scheme corresponding to the frequency converter is the first frequency converter installation scheme or the second frequency converter installation scheme; the first frequency converter installation scheme is: installing the frequency converter in the component cavity and embedding and installing a radiator on the back of the installation position of the frequency converter; the second frequency converter installation scheme is: installing the frequency converter in a preset external frequency converter cabinet.

[0010] Optionally, an electrical automation system for the coke screening building unloading trolley of the present invention further includes: A power transfer box, which is used to supply power to the coke screening building unloading trolley; the installation position corresponding to the power transfer box is determined from a preset power supply scheme, where the preset power supply scheme includes the driving distance of the coke screening building unloading trolley and the installation position corresponding to the driving distance.

[0011] Optionally, the ordinary cabinet cancels the heat dissipation holes and knock-out holes, and replaces the knock-out holes with explosion-proof bushings and explosion-proof glands. The corresponding joint treatment measures for the ordinary cabinet are determined from the preset joint treatment measure table; the top of the ordinary cabinet is provided with a sloping eaves with a higher front and a lower rear; the cabinet door of the ordinary cabinet is provided with a transparent viewing window.

[0012] Optionally, the preset power supply scheme is the first preset power supply scheme or the second preset power supply scheme.

[0013] Optionally, the ground signal transfer box further includes an optical fiber transceiver and a wireless communication transceiver; the first preset connection method is optical fiber connection or cable connection; the second preset connection method is wireless network connection.

[0014] Optionally, the multiple components further include a thermal relay, a signal isolator, a first network switch, and a second network switch; the peripheral devices further include a field remote controller and multiple network cameras.

[0015] Optionally, the multiple vehicle-mounted components further include a traveling drive component, a winch motor, an oil pump motor, and a ground dust removal station; the traveling drive component includes a traveling motor, a traveling motor fan, and a traveling motor brake.

[0016] The present invention has the following beneficial effects: 1. Effectively improves the electrical automation level of the coke screening building unloading trolley, improves the operation efficiency and running safety. Specifically, the vehicle-mounted electrical control cabinet integrates key electrical components such as inverters and cabinet PLCs, and adopts quick plug-in spring self-locking terminals of the terminal block, improving the wiring stability and maintenance convenience; the ground signal transfer box is provided with a second touch screen and is connected to the centralized control device and the coke screening building unloading trolley through the preset connection method, realizing remote monitoring and data interaction; the centralized control device includes a first host and a second host, which are respectively used for remotely monitoring and remotely controlling the coke screening building unloading trolley, making the running state of the coke screening building unloading trolley visible, improving the control accuracy and safety. Through these optimizations, the electrical control system of the coke screening building unloading trolley is upgraded from a single manual operation mode to an automated and remote control mode, reducing manual intervention and improving the intelligent level and running reliability of the system; 2. Improve the heat dissipation effect and safety of the on-vehicle electrical control panel cabinet in the electrical control system of the coke screening building unloading trolley. Specifically, in the first inverter installation scheme, the inverter is installed in the component cavity, and the radiator is embedded on the back, enhancing the heat dissipation effect; in the second inverter installation scheme, the inverter is installed in the external inverter cabinet, which is flexible and convenient for installation and maintenance. In addition, for the cabinet body of the on-vehicle electrical control panel cabinet, the heat dissipation holes and knockout holes are cancelled, and explosion-proof bushings and explosion-proof glands are adopted to improve safety; and through reasonable joint treatment and transparent window design, the protection and visualization of electrical components are enhanced. Through these design optimizations, the heat dissipation capacity, safety and maintenance convenience of the on-vehicle electrical control panel cabinet are improved, ensuring that the electrical automation system of the coke screening building unloading trolley has better environmental adaptability and longer service life while operating efficiently and stably; 3. Improve the reliability of the limit detection of the coke screening building unloading trolley, and avoid equipment damage or safety accidents caused by the failure of a single triggering mechanism. Specifically, use RFID tags to update the preset limit information table, providing a basis for abnormal detection and maintenance; combine the contact verification of the limit switch and the non-contact verification of the infrared emitter and infrared receiver to further improve the accuracy of limit detection, ensuring that the coke screening building unloading trolley can stop in time when it exceeds the maximum travel; at the same time, the cabinet PLC also regularly counts the number of limit trigger times, automatically identifies abnormalities and reminds the staff to maintain. This not only enhances the stability of limit detection, but also can monitor the status of the bumper and the coke screening building unloading trolley in real time, optimize the maintenance strategy and reduce the safety risk. Brief Description of the Drawings

[0017] Combined with the drawings and referring to the following specific embodiments, the above and other features, advantages and aspects of the embodiments of the present invention will become more obvious. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic, and the elements and elements are not necessarily drawn to scale.

[0018] Figure 1 is an exemplary structural schematic diagram of an electrical automation system for a coke screening building unloading trolley of the present invention; Figure 2 is a front view of the on-vehicle electrical control panel cabinet of an electrical automation system for a coke screening building unloading trolley of the present invention; Figure 3 is a right view of the on-vehicle electrical control panel cabinet of an electrical automation system for a coke screening building unloading trolley of the present invention; Figure 4 is a front view of a general cabinet of an electrical automation system for a coke screening building unloading trolley of the present invention; Figure 5 is a right view of a general cabinet of an electrical automation system for a coke screening building unloading trolley of the present invention; Figure 6 It is a schematic diagram of the system connection of an electrical automation system for the coke screening building discharging trolley of the present invention. Specific embodiments

[0019] The present invention will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not used to limit the protection scope of the present invention.

[0020] In addition, it should be noted that for the sake of convenience of description, only the parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0021] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence relationship of the functions performed by these devices, modules or units.

[0022] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0023] The names of the messages or information exchanged between multiple devices of the present invention are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0024] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0025] As Figure 1 shown, it is an exemplary structural schematic diagram of an electrical automation system for the coke screening building discharging trolley of the present invention, which specifically includes the following modules: On-vehicle electric control panel cabinet 101, the on-vehicle electric control panel cabinet 101 is provided with a component chamber and a wiring chamber. A terminal block is arranged inside the wiring chamber, and the terminal block adopts a quick direct plug-in spring self-locking terminal. A plurality of components are arranged inside the component chamber, and the plurality of components at least include an inverter and a panel cabinet PLC; a first touch screen, a panel emergency stop button, a main power circuit breaker, a rail clamp release button and a remote control receiver power circuit breaker are arranged on the surface of the on-vehicle electric control panel cabinet 101. A transparent opening and closing door is arranged outside the first touch screen; the on-vehicle electric control panel cabinet 101 is embedded in a common cabinet body, and the common cabinet body is installed on the coke screening building discharging trolley.

[0026] In some embodiments, as Figure 2As shown, the vehicle-mounted electric control panel cabinet 101 is respectively provided with a component cavity and a wiring cavity. The component cavity is used for installing a plurality of components, and the wiring cavity is used for summarizing and managing all the external wirings of the vehicle-mounted electric control panel cabinet 101. A terminal block is also provided inside the wiring cavity, and the terminal block is changed from a screw-type wiring terminal to a quick direct-insert spring self-locking terminal. The plurality of components installed in the component cavity at least include an inverter and a panel cabinet PLC. The surface of the vehicle-mounted electric control panel cabinet 101 is provided with a first touch screen, an emergency stop button on the panel, a main power circuit breaker, a rail clamp release button, and a remote control receiver power circuit breaker, and a transparent opening and closing door is also provided outside the first touch screen. The vehicle-mounted electric control panel cabinet 101 is embedded in a common cabinet body, and the common cabinet body is installed on the coke screening building unloading trolley.

[0027] In practice, the first touch screen can be a touch panel. The terminal block can be an ST series quick-insert spring self-locking terminal. The vehicle-mounted electric control cabinet 101 and the ordinary cabinet can adopt an explosion-proof design. For example, the vehicle-mounted electric control cabinet 101 and the ordinary cabinet can select explosion-proof cabinets. Among them, the vehicle-mounted electric control cabinet 101 is an electric control cabinet installed on the coke screening building discharging trolley, mainly used for centralized management and control of the trolley's electrical system, including power, signal processing, and control functions. The vehicle-mounted electric control cabinet 101 is usually divided into a component chamber and a wiring chamber, which are used to install electronic components and manage external wiring respectively. The terminal block is a component used to connect and aggregate electrical circuits and is usually installed in the wiring chamber of the vehicle-mounted electric control cabinet 101. The quick-insert spring self-locking terminal is a wiring terminal that does not require screws for fixation. It adopts a spring self-locking structure, which can automatically clamp the wire to ensure reliable contact. The screw-type wiring terminal relies on screws to tighten and fix the wire and is widely used in traditional electrical equipment. During long-term operation, the wiring may become loose due to factors such as vibration. The frequency converter is an electronic device used to adjust the motor speed. It controls the running speed of the motor by changing the frequency of the power supply, thereby achieving energy conservation and precise control. The cabinet PLC is an industrial control computer installed in the vehicle-mounted electric control cabinet 101, used to receive various sensor signals and control the operation of the coke screening building discharging trolley. The PLC can execute preset programs, automatically control operations such as motor start-stop, speed change, and braking, and communicate with the remote centralized control system to achieve intelligent control. The panel emergency stop button is an emergency stop switch installed at an easily operable position outside the vehicle-mounted electric control cabinet 101. In an emergency, the operator can press the panel emergency stop button to quickly cut off the power supply or control signal of the equipment, so that the coke screening building discharging trolley stops running, ensuring the safety of personnel and equipment. The main power circuit breaker is used to control the power on and off of the entire electric control cabinet and is the main switch of the system. The rail clamp release button is used to release the rail clamp, enabling the coke screening building discharging trolley to resume its traveling ability and is usually used before starting the vehicle of the coke screening building discharging trolley. The rail clamp is a mechanical device used to fix the coke screening building discharging trolley, which can clamp the track when parking to prevent the trolley from sliding. The remote control receiver is used to receive remote control signals to control the operation of the coke screening building discharging trolley. The remote control receiver power circuit breaker is a protection device that can cut off the power supply of the remote control receiver in case of power abnormality or when power-off maintenance is required, ensuring safe and reliable operation. The coke screening building discharging trolley is a rail-mounted equipment for coke transportation, usually installed in the coke screening building, used to unload coke from the storage bin into the conveying system, can move along the track, and is equipped with a corresponding electric control system to achieve automatic operation and remote control.

[0028] The ground signal transfer box 102, the ground signal transfer box 102 includes a second touch screen, the ground signal transfer box is connected to the centralized control device 103 through a first preset connection method, and is connected to the coke screening building discharging trolley through a second preset connection method.

[0029] In some embodiments, as Figure 6 shown, the ground signal transfer box 102 is provided with a second touch screen, and is connected to the centralized control device 103 through a first preset connection method, and is connected to the coke screening building unloading trolley through a second preset connection method.

[0030] In practice, the second touch screen can be a touch screen. The second preset connection method can be a wireless network connection. The second touch screen of the ground signal transfer box 102 and the first touch screen of the vehicle-mounted electric control cabinet 101 are backup to each other, and can assist in fault judgment when any touch screen fails. In addition to the conventional control and monitoring functions, the first touch screen and the second touch screen are also provided with a customized data display page, which is convenient for maintenance personnel to judge faults. The screen content includes: the status of all used input or output points in the cabinet PLC, which is convenient to confirm whether the signal is transmitted normally; the variable status or data transmitted by the second host of the centralized control system deployed in the centralized control device 103 to the cabinet PLC, which is used to monitor the data interaction related to remote control; and manipulation soft keys, which support remote control of the coke screening building unloading trolley. Through these touch screen data display operations, maintenance personnel can initially locate the cause of the fault without opening the ordinary cabinet of the vehicle-mounted electric control cabinet 101, improve the maintenance efficiency and ensure the operation safety.

[0031] Among them, the ground signal transfer box is an electrical device installed at the ground position, which is used to connect and transfer signals and data between the coke screening building unloading trolley and the centralized control system. The touch screen is an interactive device with display and touch functions, which can be used to monitor the operation status of the device, input operation instructions and set parameters. The variable status refers to the real-time status of the variable data stored in the cabinet PLC or the centralized control system. These variables can be control parameters calculated inside the cabinet PLC, values read by sensors or remote data transmitted by the centralized control system to the cabinet PLC. The status of the input or output points refers to the real-time status of the digital input and digital output ports in the cabinet PLC or the centralized control system. The input point status is usually used to monitor sensor or switch signals, for example, whether the emergency stop button is triggered.

[0032] The centralized control device 103, the centralized control device 103 includes a first host and a second host. The first host is deployed with a video monitoring system, and the second host is deployed with a centralized control system; the centralized control device 103 is connected to the ground signal transfer box 102 through a first preset connection method, and is connected to the coke screening building unloading trolley through a second preset connection method.

[0033] In some embodiments, as Figure 6As shown in the figure, the centralized control device 103 includes a first host and a second host. Among them, the first host is deployed with a video monitoring system for displaying the monitoring screen of the coke screening building unloading trolley; the second host is deployed with a centralized control system for remotely controlling the coke screening building unloading trolley. The centralized control device 103 is connected to the ground signal transfer box 102 through a first preset connection method and is connected to the coke screening building unloading trolley through a second preset connection method. In practice, the first host or the second host can be a host deployed with ubuntu. A fiber optic transceiver can be provided in the centralized control device 103. Specifically, the fiber optic transceiver in the centralized control device 103 is connected to the fiber optic transceiver in the ground signal transfer box 102 through a first preset connection method. Among them, ubuntu is a Linux distribution widely used in desktop, server, and cloud computing environments.

[0034] In these embodiments, the electrical automation level of the coke screening building unloading trolley is effectively improved, and the operation efficiency and operation safety are improved. Specifically, the on-vehicle electrical control cabinet integrates key electrical components such as inverters and cabinet PLCs, and uses quick plug-in spring self-locking terminals for terminal blocks, improving the wiring stability and maintenance convenience; the ground signal transfer box is provided with a second touch screen and is connected to the centralized control device and the coke screening building unloading trolley through a preset connection method, realizing remote monitoring and data interaction; the centralized control device includes a first host and a second host, which are respectively used for remotely monitoring and remotely controlling the coke screening building unloading trolley, making the operation state of the coke screening building unloading trolley visible, and improving the control accuracy and safety. Through these optimizations, the electrical control system of the coke screening building unloading trolley is upgraded from a single manual operation mode to an automated and remote control mode, reducing manual intervention and improving the intelligent level and operation reliability of the system.

[0035] In some embodiments, in order to further solve Technical Problem 2 described in the background art part, that is, "in the prior art, for the on-vehicle electrical control cabinet of the electrical system of the coke screening building unloading trolley, the layout of electrical components is not reasonable enough, resulting in inconvenient maintenance, low safety, and non-user-friendly operation. At the same time, the cable connection method is not flexible enough, affecting the convenience of replacement and maintenance; the control method is not perfect enough, lacking interlock protection, there are potential safety hazards; the human-machine interaction interface is not friendly enough, and the operation is not intuitive enough. In addition, the protection measures of the on-vehicle electrical control cabinet are insufficient, vulnerable to dust intrusion, affecting the service life of electrical components, and further reducing the reliability of the system", in some embodiments of the present invention, an electrical automation system for a coke screening building unloading trolley further includes: Multiple vehicle-mounted components 104 are mounted on the coke screening building unloading trolley. The multiple vehicle-mounted components 104 include a position code box signal receiver, a remote control receiver, a radar level gauge, a rotary encoder, a blockage switch, a limit switch, a rail clamp release limit switch, an oil pressure switch, an oil pump, a traveling sound and light alarm, a comprehensive fault alarm buzzer, and a vehicle-mounted emergency stop button; Peripheral equipment 105 includes multiple position code boxes, and the multiple position code boxes send position correction information to the position code box signal receiver.

[0036] In some embodiments, as Figure 6 shown, the multiple vehicle-mounted components 104 include a position code box signal receiver, a remote control receiver, a radar level gauge, a rotary encoder, a blockage switch, a forward or backward limit switch, a left or right rail clamp release limit switch, an oil pressure switch, an oil pump, a traveling sound and light alarm, a comprehensive fault alarm buzzer, and a vehicle-mounted emergency stop button.

[0037] Among them, the position code box signal receiver is used to receive the position information sent by the position code box for position correction of the coke screening building discharge trolley. The remote control receiver is used to receive the remote control signal from the on-site remote controller, enabling the coke screening building discharge trolley to operate in a remote control manner. The radar level gauge is used to detect the coke level in the coke storage bin and remind the operator to adjust the position of the coke screening building discharge trolley in a timely manner to avoid coke overflow in the bin. The rotary encoder is used to detect the angular displacement of the traveling motor or other components of the coke screening building discharge trolley to accurately control the traveling speed and position. The blockage switch is used to detect whether the coke conveying channel is blocked and send an alarm signal when a blockage occurs. The forward or backward limit switch is used to detect whether the coke screening building discharge trolley reaches the end of the travel to prevent over-travel. The limit switch is an electrical component used to detect the movement range of mechanical equipment and can trigger a signal when the equipment reaches the set position to achieve operations such as stopping, reversing, or other control operations. In practice, it can include a first limit switch and a second limit switch. The first limit switch can be the forward limit switch, and the second limit switch can be the backward limit switch. The clamp release limit switch is used to detect whether the clamp is in a released state to ensure that the coke screening building discharge trolley can start and travel normally. In practice, it can include the left or right clamp release limit switch. The oil pressure switch is used to detect the oil pressure state of the hydraulic system and provide an alarm or control signal when the oil pressure is abnormal. The oil pump is used to provide hydraulic power to drive the clamp or other hydraulic actuators. The traveling audible and visual alarm is used to emit audible and visual warnings when the coke screening building discharge trolley is traveling to remind the surrounding personnel to pay attention to safety. The comprehensive fault alarm buzzer is used to emit a buzzer alarm when the system detects a fault to remind the operator to check and handle abnormal situations. The vehicle-mounted emergency stop button is used to manually trigger an emergency stop in an emergency to cut off the power supply or control signal and make the coke screening building discharge trolley stop running immediately. Angular displacement refers to the change in the position of an object relative to a reference position when the object rotates around a fixed axis. The clamp is a mechanical device used to fix the coke screening building discharge trolley and is usually driven by a hydraulic or electric system.

[0038] As Figure 6 shown, the peripheral device 105 includes a plurality of position code boxes. The position code box is used to store preset position information and send a position correction signal to the position code box signal receiver when the coke screening building discharge trolley passes by. In practice, if the preset moving distance of the coke screening building discharge trolley is 6m, a position code box can be set every 1m for position correction. Among them, the position code box is a device used to store preset position information and is usually installed at specific positions on the track.

[0039] Among them, the panel cabinet PLC is deployed with a PLC control system, and multiple interlock control strategies are deployed in the PLC control system. The multiple interlock control strategies include at least one of the following: walking action interlock strategy, rail clamp action control interlock strategy, emergency stop control strategy, walking speed control strategy, comprehensive fault determination and its interlock strategy; Among them, the walking action interlock strategy is: if the PLC control system receives a walking instruction issued by any device in the first input device group, it judges whether all the preset frequency conversion conditions are met. If all the preset frequency conversion conditions are met, it sends a start instruction to the frequency converter; The rail clamp action control interlock strategy is: if the PLC control system receives a relaxation instruction of the rail clamp relaxation button, the PLC control system sends an oil pump start instruction to the oil pump; when the left or right rail clamp relaxation limit switch detects that the rail clamp has been completely relaxed, or the oil pressure of the oil pump reaches the preset oil pressure threshold, the PLC control system sends a stop instruction to the oil pump; The emergency stop control strategy is: if the PLC control system receives an emergency stop instruction issued by any device in the second input device group, the PLC control system sends a trip instruction to the main power circuit breaker; The walking speed control strategy is: if the PLC control system receives a walking speed instruction issued by any device in the third input device instruction group, it sends a speed adjustment instruction to at least one response component in the first response component group; The comprehensive fault determination interlock strategy is: if the PLC control system receives a fault instruction issued by any device in the fourth input device group, it sends a display instruction to each display device in the first display device group according to the fault instruction, sends a start instruction to the comprehensive fault alarm buzzer, and sends a control instruction to at least one response component in the second response component group.

[0040] In some embodiments, the panel cabinet PLC is deployed with a PLC control system. In the PLC control system, multiple interlock control strategies are deployed. The multiple interlock control strategies include at least one of the following: walking action interlock strategy, rail clamp action control interlock strategy, emergency stop control strategy, walking speed control strategy, comprehensive fault determination and its interlock strategy.

[0041] Among them, the walking action interlock strategy means that when the panel cabinet PLC receives a walking start instruction issued by any device in the first input device group, the panel cabinet PLC checks the status of the walking-related components, judges whether the preset frequency conversion conditions are met, and only allows the execution of the walking instruction after ensuring that all conditions meet the safety requirements. In practice, the first input device group includes the first touch screen, the second touch screen, the second host, the unloader forward button, and the on-site remote controller. The preset frequency conversion conditions include whether the drum cable is tightened, whether the rail clamp is completely relaxed, whether the walking motor fan has started and is running, and whether the walking motor brake has started and is running.

[0042] The clamping device action control interlock strategy means that before the discharging trolley of the screening and coke quenching building moves, it is necessary to ensure that the clamping device has been completely released. Otherwise, the PLC in the panel cabinet will prohibit the execution of the moving instruction to prevent the discharging trolley of the screening and coke quenching building from malfunctioning under the condition of clamping the track, resulting in equipment damage. After receiving the relaxation instruction, the PLC in the panel cabinet sends a starting instruction to the oil pump and detects the status of the clamping device and the oil pressure of the oil pump. If the clamping device has been completely released or the oil pressure of the oil pump reaches the preset threshold value, the PLC in the panel cabinet sends a stop instruction to the oil pump. In practice, the preset threshold value of the oil pressure can be 5 MPa.

[0043] The emergency stop control strategy means that when the discharging trolley of the screening and coke quenching building is running, if the PLC in the panel cabinet receives an emergency stop instruction sent by any device in the second input device group, the PLC in the panel cabinet will send a tripping instruction to the main power circuit breaker. In practice, the second input device group includes the on-vehicle emergency stop button, the second main unit, and the panel emergency stop button. Specifically, when receiving the emergency stop instruction, the PLC in the panel cabinet will send a tripping instruction to the main power circuit breaker to trip and cut off the power. Among them, the tripping instruction refers to the disconnection instruction sent by the control system to the circuit breaker or switching device to cut off the circuit and stop the operation of the electrical equipment.

[0044] The traveling speed control strategy means that when the PLC in the panel cabinet receives a traveling speed instruction sent by any device in the third input device group, it will send a speed adjustment instruction to at least one response component in the first response component group. In practice, the third input device group includes the first touch screen and the second touch screen. The first response component group includes the traveling motor, the traveling motor fan, the frequency converter, the reel motor, the traveling sound and light alarm, and the clamping device. Specifically, the staff can send a traveling speed instruction through the first touch screen or the second touch screen to adjust the traveling speed of the discharging trolley of the screening and coke quenching building. After receiving the traveling speed instruction, the PLC in the panel cabinet will send a speed adjustment instruction to at least one response component in the first response component group.

[0045] The comprehensive fault judgment interlock strategy means that when the cabinet PLC receives a fault instruction sent by any device in the fourth input device group, the cabinet PLC will send a display instruction to each display device in the first display device group according to the fault instruction, send a start instruction to the comprehensive fault alarm buzzer, and send a control command to at least one response component in the second response component group. In practice, the fourth input device group includes a frequency converter, a traveling motor, a traveling motor fan, a traveling motor brake, a reel motor, a rail clamp, and an oil pump motor. The first display device group includes a first touch screen and a second touch screen. The second response component group includes a frequency converter and a main power circuit breaker. Specifically, during the operation of the coke screening building unloading trolley, when any device in the fourth input device group fails and the cabinet PLC receives the corresponding fault instruction, it will send a display instruction to the first touch screen and the second touch screen so that the staff can notice the fault information, start the comprehensive fault alarm buzzer to alert the staff around the coke screening building unloading trolley, and at the same time send a control instruction to the frequency converter or the main power circuit breaker to stop the operation of the trolley in time.

[0046] Among them, the installation scheme corresponding to the frequency converter is the first frequency converter installation scheme or the second frequency converter installation scheme; the first frequency converter installation scheme is: install the frequency converter in the component cavity and embed and install a radiator on the back of the installation position of the frequency converter; the second frequency converter installation scheme is: install the frequency converter in a preset external frequency converter cabinet.

[0047] In some embodiments, the installation scheme of the frequency converter includes the first frequency converter installation scheme or the second frequency converter installation scheme. The first frequency converter installation scheme is: install the frequency converter in the component cavity and embed and install a radiator on the back of the installation position in the component cavity at the same time to reduce the heat dissipated by the frequency converter. The second frequency converter installation scheme is: install the frequency converter in a preset external frequency converter cabinet.

[0048] In practice, the radiator installed on the back of the component chamber in the first frequency converter installation scheme can be an aluminum alloy radiator. In the second frequency converter installation scheme, a frequency converter cabinet can be set up in a place with a better air environment in the screening coke building to install the frequency converter, further reducing the temperature of the vehicle-mounted electric control panel 101. The output power cable of the frequency converter can be a double-wire flat flexible cable, and the control cable can be a composite double-wire flat flexible cable. Among them, the double-wire flat flexible cable is a cable specially used for mobile devices, with two steel wire strengthening cores integrated inside to improve the tensile strength and durability of the cable. The flat structure makes it more suitable for scenarios with frequent bending and dragging. The composite double-wire flat flexible cable is based on the double-wire flat flexible cable, with additional functional materials or shielding layers added to make it have stronger anti-interference ability, higher temperature resistance or a wider applicable environment. The aluminum alloy radiator is a heat dissipation device made of aluminum alloy material, which uses the high thermal conductivity and light weight characteristics of aluminum alloy to quickly conduct and dissipate the heat generated during equipment operation into the air.

[0049] Among them, an electrical automation system for the discharging trolley in the screening coke building further includes: A power transfer box 106, which is used to supply power to the discharging trolley in the screening coke building; the corresponding installation position of the power transfer box 106 is determined from a preset power supply scheme, where the preset power supply scheme includes the driving distance of the discharging trolley in the screening coke building and the installation position corresponding to the driving distance.

[0050] In some embodiments, the power transfer box 106 is used to supply power to the discharging trolley in the screening coke building. According to the different actual driving distances of the discharging trolley in the screening coke building, the power transfer box 106 has different corresponding installation positions. In practice, the installation scheme can be determined by comparing the preset distance with the actual driving distance of the discharging trolley in the screening coke building. The preset distance can be 100m. The power transfer box 106 can transfer three-phase 380V alternating current to supply power to the discharging trolley in the screening coke building. If the driving distance of the discharging trolley in the screening coke building is less than or equal to 100m, the power transfer box can be installed at the head, middle or tail position of the travel. If the driving distance of the discharging trolley in the screening coke building is greater than 100m, the power transfer box can be installed at the middle position of the travel. Among them, three-phase refers to three-phase alternating current, which is commonly used for the power supply of high-power equipment. The power transfer box is a device for power distribution and switching, and its main function is to transmit the power to the target equipment according to the preset power supply scheme.

[0051] Among them, the ordinary cabinet cancels the heat dissipation holes and knockout holes, and uses explosion-proof bushings and explosion-proof glands to replace the knockout holes. The corresponding joint treatment measures for the ordinary cabinet are determined from the preset joint treatment measure table; the top of the ordinary cabinet is provided with a slope eaves with a higher front and a lower back; the cabinet door of the ordinary cabinet is provided with a transparent window.

[0052] In some embodiments, such asFigure 4 As shown, the ordinary cabinet body cancels the heat dissipation holes and knockout holes, and uses explosion-proof bushings and explosion-proof glands to seal the connections such as cables, replacing the knockout holes. For the joints of the ordinary cabinet body, different joint treatment measures are corresponding according to different joint types. The preset joint treatment measure table includes joint types and joint treatment measures. The joint types include fixed joints or movable joints. If the joint type of the ordinary cabinet body is a fixed joint, caulking can be adopted at the joint to seal the joint; if the joint type of the ordinary cabinet body is a movable joint, a sealing strip can be used at the joint to seal the joint. The top of the ordinary cabinet body is designed into an inclined structure with the front higher than the rear, similar to an eave, which can effectively prevent the dust accumulated on the top of the cabinet from falling into the cabinet when the cabinet door is opened. A transparent window is also provided on the cabinet door of the ordinary cabinet body, which is convenient for the staff to read the display information of the first touch screen in the on-vehicle electric control cabinet 101 without opening the cabinet door.

[0053] Among them, the heat dissipation hole refers to a hole provided on the electrical cabinet body or equipment shell for dissipating the heat generated when the internal components work, so as to prevent the temperature from being too high and affecting the performance and service life of the equipment. The knockout hole refers to a hole pre-punched or molded on the electrical cabinet body or equipment shell, usually covered with a thin metal sheet or plastic cover plate. During installation, the corresponding cover plate is knocked off as needed for introducing or leading out cables, wires, etc. The explosion-proof bushing is a special joint used for the connection of explosion-proof electrical equipment or circuits, and its design can prevent the internal generated sparks or arcs from igniting the surrounding explosive gases or dust. The explosion-proof gland is a device for fixing and sealing cables, usually used when the cable passes through the equipment shell or is connected to electrical equipment. The explosion-proof gland can not only fix the cable to prevent it from loosening or being pulled off, but also provide sealing to prevent water, dust, oil, etc. from entering the equipment interior.

[0054] Among them, the preset power supply scheme is the first preset power supply scheme or the second preset power supply scheme.

[0055] In some embodiments, the preset power supply scheme includes the first preset power supply scheme or the second preset power supply scheme. The first preset power supply scheme is to supply power by winding and unwinding the cable through a reel; the second preset power supply scheme is to supply power by hanging a trailing cable. Specifically, in the first preset power supply scheme, the reel motor drives the reel to wind and unwind the cable, so that the cable can automatically extend or contract during the driving process of the coke screening building discharge trolley, which is applicable to a longer stroke, can effectively reduce the dragging and wear of the cable, and improve the stability of the power supply system. In the second preset power supply scheme, the cable is suspended above or on the side of the traveling track of the coke screening building discharge trolley through a hanging cable rack, and the cable is synchronously pulled as the coke screening building discharge trolley moves, so as to achieve power supply, which is applicable to a shorter stroke.

[0056] In practice, the power supply scheme can be selected according to a preset distance, and the preset distance can be 100m. When the total travel distance of the discharging trolley of the coke screening building is less than or equal to 100m, the second preset power supply scheme can be adopted; when the total travel distance of the discharging trolley of the coke screening building is greater than 100m, the first preset power supply scheme can be adopted.

[0057] Among them, the ground signal transfer box also includes an optical fiber transceiver and a wireless communication transceiver; the first preset connection method is optical fiber connection or cable connection; the second preset connection method is wireless network connection.

[0058] In some embodiments, the ground signal transfer box 102 also includes an optical fiber transceiver and a wireless communication transceiver; the first preset connection method is optical fiber connection or cable connection, and the second preset connection method can be wireless network connection. The first host establishes a data connection with the optical fiber transceiver in the ground signal transfer box 102 through the optical fiber transceiver and a single-mode optical fiber, and performs remote signal transmission through the wireless communication transceiver. The connection method between the second host and the ground signal transfer box 102 can be optical fiber connection or cable connection. If the connection method is optical fiber connection, the second host establishes a data connection with the optical fiber transceiver in the ground signal transfer box 102 through the optical fiber transceiver and a single-mode optical fiber, and performs remote signal transmission through the wireless communication transceiver; if the connection method is cable connection, the second host is connected to the transfer box PLC in the ground signal transfer box 102 through a computer cable, the transfer box PLC is first connected to the transfer box network switch, and then remote signal transmission is performed through the wireless communication transceiver.

[0059] In practice, the first host can establish a communication connection with multiple network cameras around the discharging trolley of the coke screening building through the ground signal transfer box 102 to monitor the working status of the discharging trolley of the coke screening building; the second host can establish a communication connection with the panel cabinet PLC through the ground signal transfer box 102 to realize remote control of the discharging trolley of the coke screening building. Among them, the optical fiber transceiver is used to realize the conversion between optical signals and electrical signals, enabling fiber optic network devices to be interconnected with electrical signal network devices. A single-mode optical fiber is a type of optical fiber used for long-distance optical communication, with a single transmission mode. It usually uses optical signals with wavelengths of 1310nm or 1550nm, and the transmission distance can reach dozens to hundreds of kilometers. Compared with multi-mode optical fiber, its signal attenuation is lower and the bandwidth is higher. The wireless communication transceiver is a device for wireless data transmission, capable of sending and receiving wireless signals to achieve communication between remote devices. Hard wiring refers to directly connecting devices using physical cables (such as wires, cables, or optical fibers) to transmit signals or power. Compared with wireless connections, the hard wiring method usually has higher stability and anti-interference ability and is commonly used in industrial control systems.

[0060] Among them, the multiple components further include a thermal relay, a signal isolator, a first network switch, and a second network switch; the peripheral devices further include a field remote controller and multiple network cameras.

[0061] In some embodiments, the thermal relay is used to detect and protect the motor or circuit, preventing equipment damage caused by overload or overheating. When an overload situation in the circuit is detected, it will automatically cut off the circuit to protect the equipment. The signal isolator is used to electrically isolate the input and output signals, preventing interference and improving the anti-interference ability of the system and the stability of signal transmission. The network switch is used to realize data exchange between multiple devices, ensuring fast and stable transmission of signals and improving the communication efficiency of the system. The field remote controller is used to remotely control the operation of the coke screening building discharging trolley at the operation site, and the operator can control the coke screening building discharging trolley from a safe distance. The multiple network cameras are used to monitor the running state of the coke screening building discharging trolley and the situation of the operation area in real time, and transmit the video signals to the video monitoring system for the management personnel to remotely view the working state of the coke screening building discharging trolley.

[0062] In practice, the multiple network cameras can be three cameras, which are respectively installed at the front, middle, and rear positions of the coke screening building discharging trolley to comprehensively monitor the coke screening building trolley. The thermal relay can protect multiple electrical devices. For example, thermal relays are respectively set at the walking motor, walking motor fan, walking motor brake, drum motor, and oil pump motor to prevent electrical equipment from being damaged due to overload or overheating. The first network switch can be used to maintain data transmission between the multiple cameras and the video monitoring system. The second network switch can be used to maintain data transmission between the centralized control system, the panel cabinet PLC, and the first touch screen.

[0063] Among them, electrical isolation means using physical or electronic means to isolate electrical signals between circuits or devices to prevent direct current transmission, while allowing signals or energy to be transmitted through specific means. The drum motor refers to the motor used to drive the drum to rotate, which is usually used to control the winding and unwinding of cables or wire ropes to ensure that the cable extends or retracts as needed and avoid entanglement or damage. The oil pump motor refers to the motor used to drive the hydraulic pump or other types of pumps to operate, and is used in practice to provide hydraulic power to control the clamping and loosening of the rail clamp, ensuring that the coke screening building discharging trolley is stably fixed when parked and smoothly released before starting. The walking motor refers to the motor that drives a vehicle (such as the coke screening building discharging trolley) to travel along the track, usually used in conjunction with a frequency converter to achieve speed control, smooth start and stop, and energy-saving operation. The walking motor fan refers to the heat dissipation device used to cool the walking motor, which reduces the motor temperature through forced ventilation to prevent overheating caused by long-term operation, and improves the service life and operation stability of the motor. The walking motor brake refers to the device used to perform the braking function on the walking motor, which usually automatically clamps when the coke screening building discharging trolley stops running, keeps the trolley in a stationary state, prevents inertial sliding, and improves operation safety.

[0064] Among them, the multiple vehicle-mounted components further include a traveling drive component, a winch motor, an oil pump motor, and a ground dust removal station; the traveling drive component includes a traveling motor, a traveling motor fan, and a traveling motor brake.

[0065] In some embodiments, the multiple vehicle-mounted components 104 further include a traveling drive component, a winch motor, an oil pump motor, and a ground dust removal station. The traveling drive component includes a traveling motor, a traveling motor fan, and a traveling motor brake.

[0066] Among them, the winch motor is used to drive the wire rope winch to realize the winding and unwinding of the cable of the coke screening building discharge trolley, ensuring that the cable will not be entangled or damaged during the operation of the trolley. The ground dust removal station is used to collect and process the dust generated during the discharge process of the coke screening building, reducing environmental pollution and improving the air quality of the operation area. The traveling motor is used to drive the coke screening building discharge trolley to move along the track, providing the power for forward or backward movement. The traveling motor fan is used to dissipate heat from the traveling motor, preventing the motor from overheating, thereby extending the service life of the motor and ensuring the operation stability. The traveling motor brake is used to brake when the trolley stops or in case of emergency, ensuring that the trolley can stop stably and preventing accidental sliding.

[0067] In these embodiments, the heat dissipation effect and safety of the vehicle-mounted electrical control cabinet in the electrical control system of the coke screening building discharge trolley are improved. Specifically, in the first inverter installation scheme, the inverter is installed in the component cavity and the radiator is embedded on the back, enhancing the heat dissipation effect; in the second inverter installation scheme, the inverter is installed in an external inverter cabinet, which is flexible and convenient for installation and maintenance. In addition, for the cabinet body of the vehicle-mounted electrical control cabinet, the heat dissipation holes and knock-out holes are cancelled, and explosion-proof bushings and explosion-proof glands are adopted, improving the safety; and through reasonable joint treatment and transparent window design, the protection and visualization of electrical components are enhanced. Through these design optimizations, the heat dissipation capacity, safety and maintenance convenience of the vehicle-mounted electrical control cabinet are improved, ensuring that the electrical automation system of the coke screening building discharge trolley has better environmental adaptability and a longer service life while operating efficiently and stably.

[0068] In some embodiments, in order to further solve the third technical problem described in the background art, that is, "traditional limit switches rely on physical contact to trigger, are easily affected by the harsh environment of the coke screening building, resulting in pollutants accumulating on the mechanical contacts of the limit switches or the bumpers, thus causing poor contact or failure; the triggering mechanism of the limit switches is too single, and once the limit switches fail, it may cause equipment damage or personal injury; the maintenance of traditional limit switches depends on regular inspections, and abnormal states cannot be sensed in real time, posing potential safety hazards", in some embodiments of the present invention, the multiple vehicle-mounted components further include a first RFID (Radio Frequency Identification) reader, a second RFID reader, a first infrared receiver, and a second infrared receiver; the peripheral devices further include a first RFID tag, a second RFID tag, a first infrared emitter, a second infrared emitter, a first bumper, and a second bumper; the multiple interlock control strategies further include a limit switch trigger verification interlock strategy. Among them, the first bumper is used to trigger the first limit switch, the second bumper is used to trigger the second limit switch, the first infrared receiver is used to receive the infrared signal of the first infrared emitter, the second infrared receiver is used to receive the infrared signal of the second infrared emitter, the first RFID reader is used to read the first RFID tag, and the second RFID reader is used to read the second RFID tag. The limit switch trigger verification interlock strategy includes a limit joint verification strategy and a limit comprehensive maintenance warning strategy.

[0069] In some embodiments, the multiple vehicle-mounted components further include a first RFID reader, a second RFID reader, a first infrared receiver, and a second infrared receiver. The peripheral devices further include a first RFID tag, a second RFID tag, a first infrared emitter, a second infrared emitter, a first bumper, and a second bumper. Among them, the first bumper is used to trigger the first limit switch, and the second bumper is used to trigger the second limit switch. The first RFID reader is used to read the tag information of the first RFID tag. The second RFID reader is used to read the tag information of the second RFID tag. The first infrared receiver is used to receive the infrared signal of the first infrared emitter. The second infrared receiver is used to receive the infrared signal of the second infrared emitter. Among them, the first infrared receiver and the first RFID reader are installed at the front end of the coke screening building unloading trolley. The second infrared receiver and the second RFID reader are installed at the rear end of the coke screening building unloading trolley. The first infrared emitter, the first bumper, the first RFID tag, the second infrared emitter, the second bumper, and the second RFID tag are installed at both ends of the track of the coke screening building unloading trolley. Specifically, the first infrared emitter, the first bumper, and the first RFID tag can be installed at a position separated from the coke screening building unloading trolley by a preset distance in the forward direction of the coke screening building unloading trolley, and the second infrared emitter, the second bumper, and the second RFID tag can be installed at a position separated from the coke screening building unloading trolley by a preset distance in the reverse direction of the coke screening building unloading trolley. When the coke screening building unloading trolley moves forward, it will sequentially pass by the first RFID tag, the first bumper, and the first infrared emitter. When the coke screening building unloading trolley moves backward, it will sequentially pass by the second RFID tag, the second bumper, and the second infrared emitter. In practice, the preset distance can be 100m. The tag information stored in the first RFID tag and the second RFID tag is the bumper identification code. The bumper identification code can be jointly composed of the coke screening building area number, the track number, and the bumper number. For example, the bumper identification code stored in the first RFID tag can be T1-P1-01, and the bumper identification code stored in the second RFID tag can be T1-P1-02, where T1 can be the coke screening building area number, P1 can be the track number, 01 can be the bumper number of the first bumper, and 02 can be the bumper number of the second bumper.

[0070] The multiple interlock control strategies further include a limit switch trigger verification interlock strategy, and the limit switch trigger verification interlock strategy includes limit joint verification and limit comprehensive early warning.

[0071] Among them, the limit joint verification strategy is as follows: If the cabinet PLC receives the tag information of the first RFID tag, it further determines whether the first limit switch is triggered by the first iron striker and whether it receives the infrared signal of the first infrared receiver. If the first iron striker is triggered and the cabinet PLC receives the infrared signal of the first infrared receiver, the cabinet PLC updates the preset limit information table. Specifically, the cabinet PLC writes the trigger time and the iron striker identification code in the tag information of the first RFID tag into the preset limit information table. Among them, the preset limit information table includes the iron striker identification code, trigger time, total trigger times, abnormal time, and last maintenance time. Subsequently, the cabinet PLC sends a display instruction to each display device in the first display device group, sends a start instruction to the comprehensive fault alarm buzzer, and sends a control command to at least one response component in the second response component group. In practice, the first display device group includes a first touch screen and a second touch screen. The second response component group includes a frequency converter and a main power circuit breaker. The display instruction may include the iron striker identification code and the trigger time. The display instruction is used to display the iron striker identification code and the trigger time on the first touch screen and the second touch screen so that the staff can determine the position of the triggered iron striker. The control instruction may be a stop instruction for stopping the frequency converter or the main power circuit breaker to avoid equipment damage. Thus, through the limit joint verification strategy, the accurate identification of the trigger state of the limit switch is achieved.

[0072] The limit comprehensive warning strategy is as follows: If the cabinet PLC detects the tag information of the first RFID tag, but does not detect that the first limit switch is triggered by the first iron striker and at the same time receives the infrared signal of the first infrared receiver, it sends a first warning instruction to each display device in the first display device group, sends a start instruction to the comprehensive fault alarm buzzer, and sends a control command to at least one response component in the second response component group. Subsequently, the cabinet PLC updates the preset limit information table. Specifically, the cabinet PLC writes the iron striker identification code, trigger time, and abnormal time in the tag information of the first RFID tag into the preset limit information table. In practice, the first warning instruction includes the iron striker identification code and the abnormal time. The first warning instruction is used to display the iron striker identification code and the abnormal time on the first touch screen and the second touch screen so that the staff can determine the position of the abnormal iron striker. The control instruction may be a stop instruction for stopping the frequency converter or the main power circuit breaker. Thus, the missed judgment caused by the damage or poor contact of the iron striker is avoided.

[0073] The cabinet PLC will also retrieve the preset limit information table according to the preset detection period. Specifically, for each bumper identification code, the cabinet PLC first obtains the real-time date and the last maintenance time in the preset limit information table, performs a difference operation on the real-time date and the last maintenance time, and compares it with the preset maintenance interval. If it is greater than or equal to the preset maintenance interval, a maintenance instruction will be sent to each display device in the first display device group. In practice, the maintenance instruction includes the bumper identification code and the last maintenance time. The maintenance instruction is used to display the bumper identification code and the last maintenance time on the first touch screen and the second touch screen, so that the staff can determine the bumper position that needs to be maintained. The preset detection period can be 1 day, and the preset maintenance interval can be 5 days. Thus, the automatic reminder of bumper maintenance is realized, and the bumper maintenance efficiency is improved.

[0074] Subsequently, the cabinet PLC will count the occurrence times of the trigger time in the preset limit information table according to the preset sampling period to obtain the periodic bumper trigger times. If the periodic bumper trigger times are greater than or equal to the preset trigger times threshold, a second warning instruction will be sent to each display device in the first display device group. In practice, the second warning instruction includes the trolley number corresponding to the coke screening building unloading trolley, the bumper identification code, and the bumper trigger times. The second warning instruction is used to display the trolley number corresponding to the coke screening building unloading trolley, the bumper identification code, and the bumper trigger times on the first touch screen and the second touch screen, so that the staff can determine the bumper position where the bumper trigger is abnormal and the coke screening building unloading trolley corresponding to the bumper. The preset sampling period can be 3 hours, and the preset trigger times threshold can be 5 times. Thus, the warning when the bumper is triggered abnormally is realized, helping the staff to identify potential faults of the coke screening building unloading trolley in time.

[0075] Among them, the limit switch trigger verification interlock strategy is applicable to the forward or backward direction of the track of the coke screening building unloading trolley. Since the determination logic of the limit switch trigger verification interlock strategy in the direction where the first bumper is located has been described, the determination logic of the limit switch trigger verification interlock strategy in the direction where the second bumper is located will not be elaborated.

[0076] Among them, the bumper is a mechanical limit device, usually installed on the track transportation system (such as the track of the coke screening building unloading trolley), used to physically trigger the limit switch to detect whether the trolley reaches a specific position. RFID is a radio frequency identification technology that transmits data between the RFID tag and the RFID reader through radio waves to achieve automatic identification and data storage.

[0077] In these embodiments, the reliability of the limit detection of the coke screening building unloading trolley is improved, avoiding equipment damage or safety accidents caused by the failure of a single triggering mechanism. Specifically, RFID tags are used to update the preset limit information table, providing a basis for anomaly detection and maintenance; by combining the contact verification of the limit switch and the non-contact verification of the infrared emitter and infrared receiver, the accuracy of the limit detection is further improved to ensure that the coke screening building unloading trolley can stop in time when it exceeds the maximum travel; at the same time, the cabinet PLC also regularly counts the number of limit trigger times, automatically identifies anomalies and reminds the staff to perform maintenance. This not only enhances the stability of the limit detection, but also can monitor the status of the bumper and the coke screening building unloading trolley in real time, optimize the maintenance strategy, and reduce the safety risk.

[0078] The above description is only some preferred embodiments of the present invention and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present invention.

Claims

1. An electrical automation system for the discharging trolley of a coke screening building, characterized in that, Including: An on-vehicle electric control cabinet, in which there is a component chamber and a wiring chamber. Inside the wiring chamber, there is a terminal block, and the terminal block adopts quick plug-in spring self-locking terminals. Inside the component chamber, there are multiple components, and the multiple components include an inverter and a cabinet PLC; the on-vehicle electric control cabinet is provided with a first touch screen, an emergency stop button on the panel, a main power circuit breaker, a rail clamp release button, and a remote control receiver power circuit breaker. There is a transparent opening and closing door outside the first touch screen; the on-vehicle electric control cabinet is embedded in a common cabinet, and the common cabinet is installed on the coke screening building unloading trolley; A ground signal transfer box, the ground signal transfer box includes a second touch screen, and the ground signal transfer box is connected to the centralized control device through a first preset connection method and is connected to the coke screening building unloading trolley through a second preset connection method; A centralized control device, the centralized control device includes a first host and a second host. The first host is deployed with a video monitoring system, and the second host is deployed with a centralized control system; the centralized control device is connected to the ground signal transfer box through the first preset connection method and is connected to the coke screening building unloading trolley through the second preset connection method.

2. The electrical automation system for the discharging trolley of a coke screening building according to claim 1, characterized in that, It also includes: Multiple on-vehicle components, the multiple on-vehicle components are carried on the coke screening building unloading trolley, and the multiple on-vehicle components include a position code box signal receiver, a remote control receiver, a radar level gauge, a rotary encoder, a blockage switch, a limit switch, a rail clamp release limit switch, an oil pressure switch, an oil pump, a traveling sound and light alarm, a comprehensive fault alarm buzzer, and an on-vehicle emergency stop button; Peripheral equipment, the peripheral equipment includes multiple position code boxes, and the multiple position code boxes send position correction information to the position code box signal receiver.

3. The electrical automation system for the discharging trolley of a coke screening building according to claim 2, characterized in that, The cabinet PLC is deployed with a PLC control system, and multiple interlock control strategies are deployed in the PLC control system. The multiple interlock control strategies include at least one of the following: a traveling action interlock strategy, a rail clamp action control interlock strategy, an emergency stop control strategy, a traveling speed control strategy, a comprehensive fault determination and its interlock strategy; Among them, the traveling action interlock strategy is: if the PLC control system receives a traveling instruction issued by any device in the first input device group, then judge whether all the preset frequency conversion conditions are met. If all the preset frequency conversion conditions are met, then send a start instruction to the inverter; The rail clamp action control interlock strategy is: if the PLC control system receives a release instruction of the rail clamp release button, then the PLC control system sends an oil pump start instruction to the oil pump; when the rail clamp release limit switch detects that the rail clamp has been completely released, or the oil pressure of the oil pump reaches the preset oil pressure threshold, then the PLC control system sends a stop instruction to the oil pump; The emergency stop control strategy is: if the PLC control system receives an emergency stop instruction issued by any device in the second input device group, then the PLC control system sends a trip instruction to the main power circuit breaker; The walking speed control strategy is as follows: If the PLC control system receives a walking speed instruction sent by any device in the third input device group, it sends a speed adjustment instruction to at least one response component in the first response component group. The comprehensive fault determination and interlock strategy is as follows: If the PLC control system receives a fault instruction sent by any device in the fourth input device group, it sends a display instruction to each display device in the first display device group according to the fault instruction, sends a start instruction to the comprehensive fault alarm buzzer, and sends a control instruction to at least one response component in the second response component group.

4. The electrical automation system for the discharging trolley of a coke screening building according to claim 1, characterized in that, The corresponding installation plan for the frequency converter is the first frequency converter installation plan or the second frequency converter installation plan; the first frequency converter installation plan is to install the frequency converter in the component cavity and embed a radiator on the back of the installation position of the frequency converter; the second frequency converter installation plan is to install the frequency converter in an external frequency converter cabinet.

5. The electrical automation system for the discharging trolley of a coke screening building according to claim 1, characterized in that, It further includes: A power transfer box, which is used to supply power to the coke screening building unloading trolley. The corresponding installation position of the power transfer box is determined from a preset power supply plan, where the preset power supply plan includes the driving distance of the coke screening building unloading trolley and the installation position corresponding to the driving distance.

6. The electrical automation system for the discharging trolley of a coke screening building according to claim 2, characterized in that, The ordinary cabinet cancels the heat dissipation holes and knock-out holes, and replaces the knock-out holes with explosion-proof bushings and explosion-proof glands. The corresponding joint treatment measures for the ordinary cabinet are determined from a preset joint treatment measure table; the top of the ordinary cabinet is provided with a sloping eaves with a higher front and a lower rear; the cabinet door of the ordinary cabinet is provided with a transparent window.

7. The electrical automation system for the discharging trolley of a coke screening building according to claim 5, characterized in that, The preset power supply plan is the first preset power supply plan or the second preset power supply plan.

8. The electrical automation system for the discharging trolley of a coke screening building according to claim 1, characterized in that, The ground signal transfer box further includes an optical fiber transceiver and a wireless communication transceiver; the first preset connection method is optical fiber connection or cable connection; the second preset connection method is wireless network connection.

9. The electrical automation system for the discharging trolley of a coke screening building according to claim 2, characterized in that, The multiple components further include a thermal relay, a signal isolator, a first network switch and a second network switch; the peripheral devices further include a field remote controller and multiple network cameras.

10. The electrical automation system for the discharging trolley of a coke screening building according to claim 6, characterized in that, The multiple vehicle-mounted components further include a walking drive component, a winch motor, an oil pump motor and a ground dust removal station; the walking drive component includes a walking motor, a walking motor fan and a walking motor brake.

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