A detection device for the closure of the coal receiving shear gate in a coal loading car and its operating method

Abstract

This invention discloses a detection device and operating method for detecting the closure of the coal receiving shear gate on a coal loading car, belonging to the field of coal chemical technology. The detection device includes a coal loading car platform, a coal receiving gate frame within the platform, and several coal receiving gates arranged on the frame. Each coal receiving gate has a distance sensing component on one side, and a driving device for pushing the coal receiving gate is located in the middle of the frame. The driving device contains a position sensor. This invention solves the problem of the lack of effective detection elements in the prior art to determine whether the coal receiving gate is fully closed. This invention can reliably and effectively detect the closure status of the coal receiving gate, preventing mechanical failure of the coal receiving gate or obstruction of foreign objects at the coal outlet, which could cause the coal receiving gate cylinder to retract to its position, resulting in a false signal from the coal loading car, damage to the coke oven locomotive equipment, and a large amount of coal spillage from the tower.

Description

Technical Field

[0001] This invention relates to the field of coal chemical technology, specifically to a detection device and operating method for detecting the closure of the coal receiving shear gate on a coal loading car. Background Technology

[0002] Significant progress has been made in the automation technology of coke oven locomotives. To further improve the working environment for coke oven operators, the coal and coking company has made unmanned coke oven locomotive operation a key objective and is steadily advancing this process. Compared to manned coke oven locomotives, unmanned locomotives require significantly higher stability and safety standards, necessitating continuous innovation to address safety constraints in the coke oven locomotive production process. Currently, after the coal loading car takes coal, the position of each gate cannot be confirmed after it closes. If a mechanical failure occurs in one gate, or if a foreign object gets stuck, the coal loading car may be allowed to move even after the receiving gate cylinder is fully closed, potentially causing damage to the receiving gate and the coke oven locomotive equipment, resulting in a large amount of coal spilling from the coal tower. When the coke oven locomotive operates unmanned, this interlocking method is insufficiently safe. It is necessary to monitor the closing status of each gate and comprehensively determine the status of the receiving gate based on the position status of the receiving gate cylinder.

[0003] Chinese Patent CN116515507A discloses an interlocking system and method for a coal loading car and a coal tower. The coal tower's material switch is installed on the tower body. The coal loading car's control components include a level gauge and a traveling control unit. The positioning components include a first positioning element on the coal tower and a second positioning element on the coal loading car. The control module is communicatively connected to the material switch, level gauge, traveling control unit, and second positioning element. When the coal loading car moves to a fixed loading position, the second positioning element sends fixed loading position information to both the traveling control unit and the control module. The traveling control unit then stops the coal loading car, and the control module starts the material switch to begin loading. Loading continues until the level gauge detects that the material level in the coal loading car has reached a threshold. The control module then sends a closing command to the material switch, and the coal loading car completes loading and leaves the fixed position. This invention uses the aforementioned system and method to achieve an interlocking setup between the coal loading car and the coal tower, ensuring production safety.

[0004] However, the coal receiving gate in this patent does not have any related detection elements to detect whether it is closed properly. Therefore, if any of the coal receiving gates malfunctions or falls off, the closure of the coal receiving gate cannot be detected, allowing the coal car to drive away directly, causing a large amount of coal to spill out of the coal tower and affecting the safety of the coal car operation. Summary of the Invention

[0005] The purpose of this invention is to provide a detection device and operating method for detecting the closure of the coal receiving gate of a coal loading car. By setting up dual detection elements, the closure status of the coal receiving gate after coal loading is confirmed. The device has high accuracy and can effectively prevent a large amount of coal from spilling out when the coal receiving car is running with the coal receiving gate not closed. This solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A coal receiving gate closure detection device for a coal loading car includes a coal loading car platform. Two coal receiving gate slide rails are symmetrically arranged on both sides of the coal loading car platform. A coal receiving gate frame is provided in the coal loading car platform. A plurality of coal receiving gates are arranged on the coal receiving gate frame. Coal receiving gate guide wheels are provided on both sides of the coal receiving gates. The coal receiving gate guide wheels cooperate with the coal receiving gate slide rails. A distance sensing component is provided on one side of each coal receiving gate. A drive device for pushing the coal receiving gate is provided in the middle of the coal receiving gate frame. A position sensor is provided in the drive device.

[0008] Preferably, the driving device includes a coal receiving gate cylinder, a cylinder base, a cylinder positioning block, and a gate positioning groove. The gate receiving gate is connected to the middle of the side facing the closing direction, and a coal receiving gate cylinder is provided on one side of the gate positioning groove. The coal receiving gate cylinder has a built-in hydraulic cylinder position sensor.

[0009] Preferably, the cylinder end of the coal receiving gate cylinder is connected to the coal receiving gate frame via a cylinder base, and the piston end of the coal receiving gate cylinder is connected to the cylinder positioning block, with the cylinder positioning block and the gate positioning groove cooperating.

[0010] Preferably, the distance sensing component includes a switch sensing element and a proximity switch. Each coal receiving gate has a switch sensing element welded to its side facing the closing direction. The proximity switch is disposed on the coal receiving gate frame and is located in the closing direction of the coal receiving gate. The proximity switch cooperates with the switch sensing element.

[0011] Preferably, one end of the coal receiving gate facing the closing direction is connected to a steel wire rope, and the other end of the steel wire rope is connected to the gate counterweight through a fixed pulley.

[0012] A method for operating a coal loading car receiving gate closure detection device includes the following steps:

[0013] Step 1: After the coal loading car arrives at the coal tower access position, the hydraulic cylinder positioning block enters the gate positioning groove, the coal receiving gate cylinder extends, and pushes the coal receiving gate to the left. During the leftward push, the gate counterweight is lifted by the steel wire rope and fixed pulley, and the coal tower access is connected to the coal hopper of the coal loading car. The coal in the coal tower enters the coal hopper of the coal loading car under the action of gravity.

[0014] Step 2: When the weight of coal in the coal hopper of the coal loading car reaches the set weight, the coal receiving gate cylinder retracts, and the coal receiving gate slowly closes under the action of the gate counterweight. When the coal receiving gate cylinder retracts to its position, the coal receiving gate is closed in place.

[0015] Step 3: After the coal receiving gate is closed, the switch induction plates and proximity switches on the four coal receiving gates detect that the coal receiving gate is closed. At the same time, after the coal receiving gate cylinder retracts, its internal position sensor detects that it has retracted to the correct position and sends a signal to the locomotive PLC control system, allowing the coal loading car to move.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention, by installing proximity switches and switch sensing plates on each coal receiving gate and a position sensor inside the coal receiving gate cylinder, can reliably and effectively detect the closing status of the coal receiving gate, thus preventing mechanical failure of the coal receiving gate or foreign objects stuck in the coal outlet from causing the coal receiving gate cylinder to retract into place, resulting in a false signal from the coal loading car, damage to the coke oven locomotive equipment, and a large amount of coal spillage from the tower.

[0018] 2. This invention significantly improves the safety of the coke oven locomotive production process by implementing dual interlocking protection for the coal taking process of the coke oven locomotive, and provides a guarantee for the reliability and safety of the unmanned equipment of the coke oven locomotive. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a flowchart of the signal transmission process of the control system of the present invention;

[0021] Figure 3 This is a logic flowchart of the control system of the present invention.

[0022] In the diagram: 1. Coal loading car platform; 2. Coal receiving gate slide rail; 3. Coal receiving gate guide wheel; 4. Coal receiving gate frame; 5. Coal receiving gate; 6. Coal receiving gate cylinder; 7. Cylinder base; 8. Cylinder positioning block; 9. Gate positioning groove; 10. Switch induction plate; 11. Proximity switch; 12. Wire rope; 13. Fixed pulley; 14. Gate counterweight. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] To address the lack of effective detection elements in existing technologies for determining whether the coal receiving gate is fully closed, this embodiment provides the following technical solution:

[0025] like Figure 1 As shown, a coal receiving gate closure detection device for a coal loading car includes a coal loading car platform 1. Two coal receiving gate slide rails 2 are symmetrically arranged on both sides of the coal loading car platform 1. A coal receiving gate frame 4 is provided in the coal loading car platform 1, and several coal receiving gates 5 are arranged on the coal receiving gate frame 4. Coal receiving gate guide wheels 3 are provided on both sides of the coal receiving gate 5. The coal receiving gate guide wheels 3 cooperate with the coal receiving gate slide rails 2. When the coal receiving gate 5 opens and closes, it slides on the coal receiving gate slide rails 2 through the coal receiving gate guide wheels 3. Each coal receiving gate 5 has a distance sensing component on one side, which is used to detect whether the coal receiving gate 5 is closed in place. A drive device for pushing the coal receiving gate 5 is provided in the middle of the coal receiving gate frame 4. The drive device opens each coal receiving gate 5. A position sensor is provided in the drive device, which is used to detect whether the coal receiving gate cylinder 6 is closed in place when the coal receiving gate 5 is closed. Both the position sensor and the distance sensing component are signal-connected to a PLC system.

[0026] The driving device includes a coal receiving gate cylinder 6, a cylinder base 7, a cylinder positioning block 8, and a gate positioning groove 9. The coal receiving gate 5 is connected to the middle of the side facing the closing direction with the gate positioning groove 9. The coal receiving gate cylinder 6 is provided on one side of the gate positioning groove 9. The coal receiving gate cylinder 6 has a built-in hydraulic cylinder position sensor. The cylinder end of the coal receiving gate cylinder 6 is connected to the coal receiving gate frame 4 through the cylinder base 7. The piston end of the coal receiving gate cylinder 6 is connected to the cylinder positioning block 8. The cylinder positioning block 8 and the gate positioning groove 9 cooperate with each other.

[0027] The distance sensing component includes a switch sensing element 10 and a proximity switch 11. Each coal receiving gate 5 has a switch sensing element 10 welded to one side facing the closing direction. The proximity switch 11 is disposed on the coal receiving gate frame 4 and is located in the closing direction of the coal receiving gate 5. The proximity switch 11 cooperates with the switch sensing element 10.

[0028] A steel wire rope 12 is connected to one end of the coal receiving gate 5 facing the closing direction, and the other end of the steel wire rope 12 is connected to the gate counterweight 14 through a fixed pulley 13.

[0029] A method for operating a coal loading car receiving gate closure detection device includes the following steps:

[0030] Step 1: After the coal loading car arrives at the coal tower access position, the hydraulic cylinder positioning block 8 enters the gate positioning groove 9, the coal receiving gate cylinder 6 extends, and pushes the coal receiving gate 5 to the left. During the leftward push, the gate counterweight 14 is lifted by the steel wire rope 12 and the fixed pulley 13, and the coal tower access is connected to the coal hopper of the coal loading car. The coal in the coal tower enters the coal hopper of the coal loading car under the action of gravity.

[0031] Step 2: When the weight of coal in the coal hopper of the coal loading car reaches the set weight, the coal receiving gate cylinder 6 retracts, and the coal receiving gate 5 slowly closes under the action of the gate counterweight 14. After the coal receiving gate cylinder 6 retracts to its position, the coal receiving gate 5 closes completely.

[0032] Step 3: After the coal receiving gate 5 is closed, the switch induction plates 10 and proximity switches 11 on the four coal receiving gates 5 detect that the coal receiving gate 5 is closed. At the same time, after the coal receiving gate cylinder 6 retracts, its internal position sensor detects that it has retracted to the correct position and sends a signal to the locomotive PLC control system, allowing the coal loading car to move.

[0033] like Figure 2 As shown, the coal receiving gate 5 has four closing signals: one, two, three, and four. These signals are sent to the coal loading car PLC remote station, which then sends the signals to the coal loading car PLC system. A position sensor detects the position travel signal of the coal receiving gate cylinder 6 and sends it to the coal loading car PLC remote station, which in turn sends the signal to the coal loading car PLC system. The coal loading car PLC system receives the closing signals from the four coal receiving gates 5 and the position travel signal from the coal receiving gate cylinder 6. It compares the signals received from the remote station. When the proximity signals from the switch sensor 10 and the proximity switch 11 match the retraction signal from the coal receiving gate cylinder 6, and the coal hopper of the coal loading car is full, a control command is sent to the remote station to control the movement of the coal loading car, ensuring the safety and reliability of the coke oven locomotive system.

[0034] like Figure 3 As shown, the detection path for the coal receiving gate 5 closing signal of the coal charging car is divided into the position signal detected and judged by the position sensor of the coal receiving gate cylinder 6; and the closing status signal of the coal receiving gate 5 judged by the proximity switches 11 of the four coal receiving gates 5. After comprehensively comparing the two signals, the coal charging car is allowed to travel to the furnace area. The specific judgment logic is as follows:

[0035] When the coal truck arrives at the coal tower's coal collection point, it checks if it is in the correct position and stops moving.

[0036] Is the coal level in the coal hopper of the coal loading car low? Yes, the level is low.

[0037] If the coal hopper level in the coal loading car is low, check if the receiving gate cylinder 6 is permissible; the receiving gate 5 is functioning correctly.

[0038] Is the coal receiving gate open to position 5? Yes, the coal receiving gate is open to position 5.

[0039] Is the coal hopper level in the coal loading car high? (The coal hopper level in the coal loading car is high.)

[0040] Close the coal receiving gate 5;

[0041] Is the coal receiving gate cylinder 6 closed in place? The coal receiving gate cylinder 6 is closed in place.

[0042] Whether the coal receiving gate 5 is closed in place: Coal receiving gate 1 5 is closed in place; Coal receiving gate 2 5 is closed in place; Coal receiving gate 3 5 is closed in place; Coal receiving gate 4 5 is closed in place.

[0043] Coal loading cars are permitted to travel into the furnace area.

[0044] Working principle: After the coal car arrives at the coal tower access position, the hydraulic cylinder positioning block 8 enters the gate positioning groove 9, the coal receiving gate cylinder 6 extends, and pushes the coal receiving gate 5 to the left, connecting the coal tower access with the coal hopper of the coal car. The coal in the coal tower enters the coal hopper of the coal car under the action of gravity. When the weight of coal in the coal hopper of the coal car reaches the set weight, the coal receiving gate cylinder 6 retracts, and the coal receiving gate 5 slowly closes under the action of the gate counterweight 14. The switch induction plates 10 and proximity switches 11 on the four coal receiving gates 5 detect that the coal receiving gates 5 are all closed. At the same time, after the coal receiving gate cylinder 6 retracts, its internal position sensor detects that it has retracted to the correct position and sends a signal to the locomotive PLC control system, allowing the coal car to move.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detection device for the closure of a coal loading car's receiving gate, comprising a coal loading car platform (1), characterized in that: The coal loading platform (1) is symmetrically provided with two coal receiving gate slide rails (2) on both sides. The coal loading platform (1) is provided with a coal receiving gate frame (4). Several coal receiving gates (5) are arranged on the coal receiving gate frame (4). Coal receiving gate guide wheels (3) are provided on both sides of the coal receiving gate (5). The coal receiving gate guide wheels (3) cooperate with the coal receiving gate slide rails (2). A distance sensing component is provided on one side of each coal receiving gate (5). A drive device for pushing the coal receiving gate (5) is provided in the middle of the coal receiving gate frame (4). A position sensor is provided in the drive device. The driving device includes a coal receiving gate cylinder (6), a cylinder base (7), a cylinder positioning block (8), and a gate positioning groove (9). The coal receiving gate (5) is connected to the middle of the side facing the closing direction by the gate positioning groove (9). The coal receiving gate cylinder (6) is provided on one side of the gate positioning groove (9). The coal receiving gate cylinder (6) has a built-in hydraulic cylinder position sensor. The cylinder end of the coal receiving gate cylinder (6) is connected to the coal receiving gate frame (4) through the cylinder base (7). The piston end is connected to the cylinder positioning block (8), and the cylinder positioning block (8) and the gate positioning groove (9) cooperate with each other; the distance sensing component includes a switch sensing piece (10) and a proximity switch (11). Each coal receiving gate (5) has a switch sensing piece (10) welded on the side facing the closing direction. The proximity switch (11) is set on the coal receiving gate frame (4). The proximity switch (11) is located in the closing direction of the coal receiving gate (5). The proximity switch (11) cooperates with the switch sensing piece (10).

2. The coal loading car receiving gate closure detection device according to claim 1, characterized in that: The coal receiving gate (5) is connected to a steel wire rope (12) at one end facing the closing direction, and the other end of the steel wire rope (12) is connected to the gate counterweight (14) through a fixed pulley (13).

3. A method for operating a coal loading car receiving gate closure detection device, implemented based on the coal loading car receiving gate closure detection device as described in claim 2, characterized in that: Includes the following steps: Step 1: After the coal loading car arrives at the coal tower access position, the cylinder positioning block (8) enters the gate positioning groove (9), the receiving gate cylinder (6) extends, and pushes the receiving gate (5) to the left. During the left push, the gate counterweight (14) is lifted by the wire rope (12) and the fixed pulley (13), and the coal tower access is connected to the coal hopper of the coal loading car. The coal in the coal tower enters the coal hopper of the coal loading car under the action of gravity. Step 2: When the weight of coal in the coal hopper of the coal loading car reaches the set weight, the coal receiving gate cylinder (6) retracts, and the coal receiving gate (5) slowly closes under the action of the gate counterweight (14). When the coal receiving gate cylinder (6) retracts to its position, the coal receiving gate (5) closes in place. Step 3: After the coal receiving gate (5) is closed, the switch induction plate (10) and proximity switch (11) on the four coal receiving gates (5) detect that the coal receiving gate (5) is closed. At the same time, after the coal receiving gate cylinder (6) retracts, its internal position sensor detects that it has retracted to the correct position and sends a signal to the locomotive PLC control system, allowing the coal loading car to move.

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