A rammer device for operating at a remote location

Abstract

The application discloses a kind of tamping machine remote operation device, belong to tamping machine control technical field.The device includes the HMI panel being arranged on the coal loading car platform, the switch installed in the tamping machine operating box, the wireless transmitting module being connected with the switch, and the antenna being installed outside the operating room;The HMI panel is wirelessly connected with the wireless transmitting module by wireless local area network, and the data exchange with tamping machine PLC system is realized.Patrol personnel can directly operate tamping machine on the coal loading car platform through HMI panel, while observing coal cake height and coal amount of feeder, completely solve the problem that gesture communication is difficult due to loud noise, prone to misoperation and coal collapse accident.The device has simple structure, convenient modification, stable signal, accurate control, and significantly reduces the labor intensity of workers.

Description

Technical Field

[0001] This invention belongs to the field of coking equipment control technology, specifically relating to a remote operation device for a coke oven tamping machine. Background Technology

[0002] In the coking process, the tamping machine is responsible for compacting pulverized coal into coal cakes with a certain density and strength. The quality of the coal cakes directly affects the subsequent coal charging and coking results. Currently, the imported tamping machines purchased by coking plants are highly automated and can achieve automatic tamping. The conventional operation method is as follows: one tamping operator is located in a dedicated control room on the top of the furnace, controlling the operation of the tamping machine through an operating terminal; another inspector stands on a moving coal charging car platform, responsible for real-time inspection of the coal cake forming height and the amount of coal fed by the feeder, and feeding back the information to the tamping operator in the control room using hand gestures.

[0003] However, the tamping machine generates significant noise during operation, and communication between the tamping operator in the control room and the inspector on the coal loading platform relies solely on hand gestures. This method of communication is extremely difficult, prone to misunderstandings and communication delays, preventing the tamping operator from accurately adjusting the coal feed rate based on the real-time condition of the coal cake. As a result, the tamped coal cake exhibits uneven density, increasing the risk of coal collapse during loading. Coal collapse not only impacts production but also forces workers to spend considerable time cleaning up spilled coal after their shift, significantly increasing their workload.

[0004] To address the aforementioned issues, a wireless monitoring system for tamping machines has been proposed in the prior art. This system includes a wireless communication module installed in the tamping machine's PLC control cabinet, an antenna installed outside the operator's room, and a handheld wireless terminal for the inspector. The inspector can view the tamping machine's operating status and coal cake height on the coal loading platform using the handheld terminal. However, this solution only transmits monitoring data to the mobile device. After discovering a problem, the inspector still needs to notify the operator in the control room via gestures or a walkie-talkie for adjustments. Bottlenecks in information transmission and the risk of distortion remain, and the problems of misoperation and coal collapse caused by poor communication have not been fundamentally resolved. Summary of the Invention

[0005] The technical problem this invention aims to solve is: how to fundamentally eliminate the problems caused by poor communication between operators and inspectors due to noise, which leads to inaccurate control of coal feeding, easy coal cake collapse, and high labor intensity for workers cleaning coal.

[0006] The technical solution adopted in this invention is as follows:

[0007] A device for remote operation of a tamping machine, comprising:

[0008] The HMI panel is installed on the coal loading car platform, allowing inspection personnel to operate and observe directly from their inspection positions.

[0009] The switch is installed inside the tamping machine control box and communicates with the tamping machine's PLC system.

[0010] The wireless transmitter module, connected to the switch, is used to convert wired network signals of the PLC system into wireless signals;

[0011] The antenna is installed outside the tamping machine operator's cab and connected to the wireless transmission module.

[0012] The HMI panel has a built-in wireless communication module, which connects wirelessly to the wireless transmitter module via a wireless local area network to exchange data with the tamping machine's PLC system, enabling operation of the tamping machine on the coal loading car platform.

[0013] Furthermore, the HMI panel is an industrial-grade wireless touchscreen, and its installation position is within 20 meters of the horizontal straight-line distance of the antenna.

[0014] Furthermore, it also includes an operation control switch, which is electrically connected to the PLC system of the tamping machine and is used to switch control permissions between the HMI panel and the operation terminal set in the control room.

[0015] Furthermore, the operation control switch is a key-type selector switch, installed next to the HMI panel on the coal loading vehicle platform.

[0016] Furthermore, the wireless transmission module is an industrial wireless access point, and the antenna is an omnidirectional antenna; the two are connected via a feeder line.

[0017] Furthermore, the switch is connected to the PLC system of the tamping machine via an industrial Ethernet cable.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention breaks through the technical prejudice that "mobile platforms are not suitable as control points" and creatively transfers the operating authority from the fixed control room to the mobile coal loading car platform, so that the inspector is transformed from a passive "information transmitter" to an active "control decision-maker", realizing the unity of "observation" and "operation" and fundamentally eliminating the hand gesture communication link.

[0020] 2. When the inspector of this invention observes abnormal coal cake height or deviation in the amount of coal fed by the feeder, they can immediately adjust the parameters of the tamping machine directly through the HMI panel next to them, without any information transmission links, thus achieving precise closed-loop control. The adjustment effect can be immediately visually confirmed, completely eliminating misoperation caused by communication misunderstandings;

[0021] 3. Due to the significantly improved control precision, the coal cake produced by this invention has a uniform density, which significantly reduces or even eliminates coal collapse accidents during coal loading, and greatly reduces the extra labor intensity of workers cleaning up residual coal after get off work.

[0022] 4. This invention achieves hardware interlocking between wireless remote operation and wired local operation by adding an operation right switching switch, ensuring that only one control terminal has operation authority at any time, which fully complies with the highest safety standards in industrial sites.

[0023] 5. This invention utilizes the existing PLC network of the tamping machine for retrofitting and modification, without the need for rewiring or large-scale equipment alteration. The modification cycle is short and the investment cost is low, making it highly practical and worth promoting. Attached Figure Description

[0024] Figure 1 This is a schematic block diagram of the system structure of the present invention;

[0025] In the diagram: 1. HMI panel; 2. Switch; 3. Wireless transmission module; 4. Antenna; 5. PLC system for tamping machine; 6. Operating terminal in the control room; 7. Operating authority switching switch. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0027] like Figure 1 As shown, a remote operation device for a tamping machine mainly consists of an HMI panel 1, a switch 2, a wireless transmission module 3, an antenna 4, and an operation right switching switch 7.

[0028] The original control system of the tamping machine was based on a PLC system 5, with its operating terminal 6 located in the control room on the top of the furnace. This invention modifies and adds to the existing operating terminal 6.

[0029] An industrial-grade wireless touchscreen is installed as HMI panel 1 on the pillars or guardrails of the coal loading vehicle platform. This HMI panel 1 supports Wi-Fi communication protocol, is dustproof and waterproof, and suitable for harsh on-site environments. An industrial Ethernet switch 2 is installed inside the tamping machine's on-site control box. Switch 2 is connected to the local area network of the tamping machine's PLC system 5 via a network cable. The wireless transmission module 3 uses an industrial wireless access point (AP) and is connected to switch 2 via a network cable. Antenna 4 is installed in an open area outside the control room roof and connected to the wireless AP via a feeder cable.

[0030] During operation, the coal loading car stops at the tamping station. At this time, the straight-line distance between HMI panel 1 and antenna 4 is approximately 15 meters, which is within the effective range of 20 meters. After HMI panel 1 is powered on, it automatically connects to the dedicated wireless LAN of the wireless AP broadcast. Through this network, it establishes communication with PLC system 5, reads and displays the operating status and fault information of the tamping machine in real time, and can download control commands.

[0031] To prevent conflicts between operations at different locations, a key-operated control switch 7 is installed near HMI panel 1, with its contact signals connected to PLC system 5. When the inspector inserts the key and turns it to the "remote operation" position, the PLC program executes interlocking logic, blocking instructions from the operator terminal 6 in the control room, but retaining the status monitoring function. When the switch is turned to the "control room operation" position and the key is removed, HMI panel 1 retains only the monitoring function, and the operation authority is restored to operator terminal 6. This process is completed entirely through hardware switching and PLC logic coordination, ensuring safety and reliability.

[0032] The specific operation process of this invention is as follows:

[0033] When the inspector observes that the coal cake height is too low or the coal feeder's output is abnormal on the coal loading platform, they can gain control via the operation control switch 7. They can then directly click the corresponding control button on the HMI panel 1, such as "Increase Coal Feed" or "Stop Tamping Hammer." Upon receiving the command, the PLC system 5 immediately drives the actuators. The inspector can simultaneously visually confirm the adjustment effect, achieving precise "what you see is what you get" operation. After the adjustment is complete, control is returned to the control room.

[0034] This invention establishes a remote operation device based on a wireless local area network, transforming inspection workers from passive information transmitters into active control participants, fundamentally eliminating communication barriers caused by noise-induced gestures. Its advantages include: real-time and precise control, effectively preventing coal collapse accidents caused by inaccurate coal feeding, and significantly reducing the labor intensity of workers cleaning up excess coal; a simple installation structure, fully utilizing existing PLC networks, resulting in a short modification cycle and low cost; and the added operation control switching mechanism ensures operational safety, making it highly practical and worthy of widespread application.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A device for remote operation of a tamping machine, characterized in that, include: HMI panel (1) is set on the coal loading car platform for inspection personnel to operate and observe directly at the inspection position; The switch (2) is installed in the tamping machine control box and is connected to the tamping machine's PLC system (5) for communication. The wireless transmission module (3) is connected to the switch (2) and is used to convert the wired network signal of the PLC system (5) into a wireless signal; Antenna (4) is installed outside the tamping machine operating room and connected to the wireless transmission module (3); The HMI panel (1) has a built-in wireless communication module, which is wirelessly connected to the wireless transmitter module (3) via a wireless local area network to realize data exchange with the tamping machine PLC system (5) so as to operate the tamping machine on the coal loading car platform.

2. The apparatus according to claim 1, characterized in that, The HMI panel (1) is an industrial-grade wireless touch screen, and its installation position is within 20 meters of the horizontal straight-line distance of the antenna (4).

3. The apparatus according to claim 1, characterized in that, It also includes an operation control switch (7), which is electrically connected to the PLC system (5) of the tamping machine and is used to switch control permissions between the HMI panel (1) and the operation terminal (6) set in the control room.

4. The apparatus according to claim 3, characterized in that, The operation control switch (7) is a key-type selector switch, which is installed on the side of the HMI panel (1) on the coal loading vehicle platform.

5. The apparatus according to claim 1, characterized in that, The wireless transmission module (3) is an industrial wireless access point, and the antenna (4) is an omnidirectional antenna. The two are connected by a feeder.

6. The apparatus according to claim 1, characterized in that, The switch (2) is connected to the PLC system (5) of the tamping machine via an industrial Ethernet cable.

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