A distributed conveyor pressure data acquisition and early warning device and method

Abstract

The application discloses a kind of distributed conveyor pressure data acquisition early warning device and method, which continuously collects the pressure data of material extrusion pressure scraping plate by multiple pressure sensors distributed on the scraping chain, judges whether the scraping plate machine is overloaded and carries out early warning device, to prevent the scraping plate chain from being broken due to long time of scraping plate machine overload conveying.It is characterized by being composed of main component and pressure data acquisition component, the main component is composed of scraping plate chute, transmission chain and conveyor scraping plate, the conveyor scraping plate is placed between the two transmission chains, the two ends of the conveyor scraping plate are connected with the two transmission chains, the conveyor scraping plate has multiple, multiple conveyor scraping plates are equidistantly distributed along the length direction of the transmission chain, the conveyor scraping plate and the transmission chain form a scraping chain, and the scraping chain is movably placed in the scraping plate chute.

Description

Technical Field

[0001] This invention relates to a distributed conveyor pressure data acquisition and early warning device and method, which collects pressure data of the scraper blades of a scraper conveyor and provides early warning. It belongs to the field of conveyor technology, and specifically relates to a device and method that is distributed on the scraper chain to continuously collect pressure data of material squeezing the scraper blades, thereby determining whether the scraper conveyor is overloaded and providing early warning, so as to prevent the scraper chain from breaking due to excessive overload conveying time.

[0002] A scraper conveyor is a conveyor that uses a scraper chain to transport bulk materials within a trough. It consists of three parts: the head section, the middle section, and the tail section. The scraper conveyor uses an open chute as the load-bearing component for coal, gangue, or other materials. Scrapers are fixed to a drive chain to form the scraper chain, which serves as the traction component. When the head drive unit starts, it drives the sprocket on the head shaft to rotate, causing the scraper chain to circulate and move the material along the chute until it is unloaded at the head. The scraper chain then loops around the sprocket in a continuously closed loop, completing the material transport. However, to increase transport speed or change the type of material being transported while maintaining the same flow rate (using a lighter flow rate to transport a heavier material), the scraper conveyor may be overloaded. Because existing scraper conveyors lack overload detection equipment, overloaded scraper conveyors are often not detected in time, resulting in the scraper chain being under constant tension for extended periods, increasing the chain's stress and making it prone to breakage.

[0003] Publication No. CN213293710U discloses a type of underground scraper conveyor that can be connected to a mining machine. It includes at least two scraper conveyors arranged one after the other along the material conveying direction of the fully mechanized mining face. Each scraper conveyor has a toothed rail and a slide rail on both sides for the coal mining machine to travel. The head trough of the front scraper conveyor and the tail trough of the rear scraper conveyor are detachably connected. When the scraper conveyor is not equipped with an overload detection device, the staff often cannot detect the overload in time, which causes the scraper chain to be in a tense transport state for a long time. The tension of the scraper chain increases, which can easily lead to the breakage of the scraper chain.

[0004] Publication No. CN213801694U discloses a buried scraper conveyor with automatic cleaning function, including: a scraper conveyor bracket, a scraper conveyor body installed inside the scraper conveyor bracket, a sealing cover plate provided on the scraper conveyor bracket outside the scraper conveyor body, and a feeding port provided on the upper side of the lower end of the scraper conveyor body. When the scraper conveyor is not equipped with overload detection equipment, when the scraper conveyor is overloaded, the staff often cannot detect it in time, which causes the scraper chain to be in a tense transportation state for a long time, the tension of the scraper chain increases, and it is easy to cause the scraper chain to break. Summary of the Invention

[0005] To improve the above situation, the present invention provides a distributed conveyor pressure data acquisition and early warning device and method. This device and method continuously collects pressure data of material squeezing the pressure scraper by multiple pressure sensors distributed on the scraper chain, and determines whether the scraper conveyor is overloaded and issues an early warning accordingly, thereby preventing the scraper chain from breaking due to excessive overload conveying time.

[0006] The distributed conveyor pressure data acquisition and early warning device of the present invention is implemented as follows: The distributed conveyor pressure data acquisition and early warning device of the present invention consists of a main body component and a pressure data acquisition component. The main component consists of a scraper conveyor chute, a drive chain, and conveyor scrapers. The conveyor scraper is positioned between two drive chains, with its two ends correspondingly connected to the two drive chains. Preferably, the conveyor scrapers are multiple, and the multiple conveyor scrapers are equidistantly distributed along the length of the transmission chain. The conveyor scraper and drive chain together form a scraper chain, which is movably positioned within the scraper conveyor chute. The pressure data acquisition component consists of a data acquisition scraper, a pressure-bearing scraper, a limiting ball, a rectangular limiting slider, a gathering scraper, a fixing groove, a cross-shaped extrusion block, a pressure sensor, a rectangular limiting slide groove, a cross-shaped mounting groove, and a flexible protective net. The data acquisition scraper is positioned between two drive chains, with its two ends connected to the two drive chains respectively. Preferably, there are multiple data acquisition scrapers, which are equidistantly distributed along the length of the transmission chain, with each data acquisition scraper located between two adjacent conveyor scrapers. Preferably, the data acquisition scraper and the transmission chain are welded or bolted together. The data acquisition scraper has a cross-shaped mounting groove. Preferably, the width of the cross-shaped mounting groove gradually decreases from the center to the edge, and the cross-shaped mounting groove is located in the center of the side of the data acquisition scraper. The pressure sensor is placed inside the cross-shaped mounting slot, and the flexible protective mesh cover is placed on top of the cross-shaped mounting slot. The data acquisition scraper has two rectangular limiting grooves on its side. Preferably, the rectangular limiting groove is a through groove structure, and the two rectangular limiting grooves are respectively located near both ends of the data acquisition scraper. The pressure scraper is equipped with two rectangular limit sliders. Preferably, the two rectangular limiting sliders and the two rectangular limiting grooves correspond one-to-one. One end of the rectangular limiting slider is connected to the pressure-bearing scraper, and the other end of the rectangular limiting slider extends from one side of the data acquisition scraper through the corresponding rectangular limiting groove to the other side. The other end of the rectangular limiting slider has a fixing groove. Preferably, the cross-section of the fixing groove is a one-third circular structure. The limiting ball is placed in the fixed groove. The cross-shaped extrusion block is placed on the pressure scraper. Preferably, the cross-shaped compression block and the cross-shaped mounting groove correspond to each other, and the sum of the length of the cross-shaped compression block and the thickness of the pressure sensor is greater than the depth of the cross-shaped mounting groove. The cross-shaped compression block extends into the cross-shaped mounting groove and contacts the pressure sensor. The pressure-bearing scraper is equipped with converging scrapers at both ends. Preferably, the converging scraper extends from one end at an obtuse angle to the pressure scraper in a direction away from the pressure scraper to three-quarters of its length, and then continues to extend at an obtuse angle to the other end. Preferably, the other end of the gathering scraper does not contact the drive chain; This invention also relates to a method for collecting and issuing early warning data on pressure in a distributed conveyor, comprising the following steps: 1) During the operation of the scraper conveyor, the pressure scraper is squeezed by the material and moves toward the data acquisition scraper, which in turn drives the cross extrusion block to insert into the cross mounting groove, generating pressure on the pressure sensor; Preferably, the extrusion pressure of the material on the pressure scraper increases with the increase of the load during conveyor transport. When the load of the conveyor increases, the tension of the scraper chain also increases. Therefore, the pressure data can reflect the tension of the scraper chain. 2) Pressure data is continuously collected by pressure sensors distributed on multiple data acquisition scrapers on the scraper chain in the distributed conveyor pressure data acquisition and early warning device, and the pressure data is sent to the monitoring backend; Preferably, initially, the pressure sensor and the monitoring backend exchange signals. Preferably, multiple data acquisition scrapers are numbered, such as 1, 2, 3… 3) After receiving the pressure data, the monitoring backend converts the pressure data into specific pressure parameter values ​​through the signal conversion module; 4) The monitoring backend compares and analyzes multiple pressure parameter values ​​and set thresholds through its own data processing module. When a certain pressure parameter value continuously exceeds the set threshold within a set time, it indicates that the scraper conveyor is continuously in an overload conveying state. At this time, the monitoring backend issues an alarm signal and prompts the data acquisition scraper number where the pressure sensor that continuously exceeds the threshold is located. 5) After receiving the alarm signal, the staff should reduce the conveyor flow rate to prevent the conveyor from being continuously overloaded. Beneficial effects

[0007] 1. It can continuously collect pressure data of the material extrusion and pressure bearing scraper, and judge whether the scraper conveyor is overloaded and issue an early warning to prevent the scraper conveyor from being overloaded for too long and causing the scraper chain to break.

[0008] Second, the components are distributed along the scraper chain, enabling timely and accurate collection of pressure data and prompt early warning. Attached Figure Description

[0009] Figure 1 A three-dimensional structural diagram of a distributed conveyor pressure data acquisition and early warning device according to the present invention; Figure 2 This invention provides a schematic diagram of a distributed conveyor pressure data acquisition and early warning device, which only shows the structure of the pressure-bearing scraper. Figure 3 The schematic diagram of the distributed conveyor pressure data acquisition and early warning device of the present invention only shows the structure of the cross mounting groove. Figure 4 The schematic diagram of the distributed conveyor pressure data acquisition and early warning device of the present invention only shows the structure of the flexible protective net.

[0010] Attached Figure

[0011] Among them are: scraper conveyor chute (1), data acquisition scraper (2), pressure bearing scraper (3), limit ball (4), rectangular limit slider (5), transmission chain (6), gathering scraper (7), fixing groove (8), conveyor scraper (9), cross extrusion block (10), pressure sensor (11), rectangular limit chute (12), cross mounting groove (13), and flexible protective net (14). Detailed Implementation

[0012] This invention discloses a distributed conveyor pressure data acquisition and early warning device, which consists of a main body component and a pressure data acquisition component. The main component consists of a scraper conveyor chute (1), a transmission chain (6), and a conveyor scraper (9). The conveyor scraper (9) is positioned between two drive chains (6), and both ends of the conveyor scraper (9) are correspondingly connected to the two drive chains (6). Preferably, there are multiple conveyor scrapers (9), and the multiple conveyor scrapers (9) are equidistantly distributed along the length direction of the transmission chain (6). The conveyor scraper (9) and the drive chain (6) form a scraper chain, which is movably placed inside the scraper conveyor chute (1). The pressure data acquisition component consists of a data acquisition scraper (2), a pressure-bearing scraper (3), a limiting ball (4), a rectangular limiting slider (5), a gathering scraper (7), a fixing groove (8), a cross-shaped extrusion block (10), a pressure sensor (11), a rectangular limiting slide groove (12), a cross-shaped mounting groove (13), and a flexible protective net (14). The data acquisition scraper (2) is placed between two transmission chains (6), and both ends of the data acquisition scraper (2) are connected to the two transmission chains (6) respectively. Preferably, there are multiple data acquisition scrapers (2), which are equidistantly distributed along the length of the transmission chain (6), and each data acquisition scraper (2) is located between two adjacent conveyor scrapers (9). Preferably, the data acquisition scraper (2) and the transmission chain (6) are welded or bolted together. The data acquisition scraper (2) has a cross-shaped mounting groove (13). Preferably, the width of the cross-shaped mounting groove (13) gradually decreases from the center to the edge, and the cross-shaped mounting groove (13) is located in the middle of the side of the data acquisition scraper (2). The pressure sensor (11) is placed in the cross-shaped mounting groove (13), and the flexible protective net (14) is placed on the cross-shaped mounting groove (13). The data acquisition scraper (2) has two rectangular limiting grooves (12) on its side. Preferably, the rectangular limiting groove (12) is a through groove structure, and the two rectangular limiting grooves (12) are respectively close to both ends of the data acquisition scraper (2). Two rectangular limiting sliders (5) are placed on the pressure scraper (3). Preferably, the two rectangular limiting sliders (5) and the two rectangular limiting grooves (12) correspond one-to-one. One end of the rectangular limiting slider (5) is connected to the pressure scraper (3), and the other end of the rectangular limiting slider (5) extends from one side of the data acquisition scraper (2) through the corresponding rectangular limiting groove (12) to the other side. The rectangular limiting slider (5) has a fixing groove (8) at the other end. Preferably, the fixing groove (8) has a cross-section that is one-third of a circle. The limiting ball (4) is placed in the fixing groove (8). The cross-shaped extrusion block (10) is placed on the pressure scraper (3). Preferably, the cross-shaped compression block (10) and the cross-shaped mounting groove (13) correspond to each other, and the sum of the length of the cross-shaped compression block (10) and the thickness of the pressure sensor (11) is greater than the depth of the cross-shaped mounting groove (13). The cross-shaped compression block (10) extends into the cross-shaped mounting groove (13) and contacts the pressure sensor (11). The pressure-bearing scraper (3) has a gathering scraper (7) at both ends. Preferably, the gathering scraper (7) bends at an obtuse angle from one end to the pressure scraper (3) towards three-quarters of its length, and then continues to bend at an obtuse angle to the other end. Preferably, the other end of the gathering scraper (7) does not contact the transmission chain (6); Preferably, the flexible protective net (14) is woven from cotton thread or nylon rope; This invention also relates to a method for collecting and issuing early warning data on pressure in a distributed conveyor, comprising the following steps: 1) During the operation of the scraper conveyor, the pressure scraper (3) is squeezed by the material and moves toward the data acquisition scraper (2), thereby driving the cross extrusion block (10) to insert into the cross mounting groove (13) and generate pressure on the pressure sensor (11); Preferably, the extrusion pressure of the material on the pressure scraper (3) will increase as the load of the conveyor increases during transport. When the load of the conveyor increases, the tension of the scraper chain will also increase. Therefore, the pressure data can reflect the tension of the scraper chain. Preferably, during this process, the gathering scraper (7) can concentrate the material towards the center of the pressure-bearing scraper (3), thereby improving the accuracy of pressure data acquisition by the pressure sensor (11). 2) Pressure data is continuously collected by pressure sensors (11) on multiple data acquisition scrapers (2) distributed on the scraper chain in the distributed conveyor pressure data acquisition and early warning device, and the pressure data is sent to the monitoring background. Preferably, initially, the pressure sensor (11) and the monitoring backend exchange signals. Preferably, the multiple data acquisition scrapers (2) are numbered, such as 1, 2, 3… 3) After receiving the pressure data, the monitoring backend converts the pressure data into specific pressure parameter values ​​through its own signal conversion module; Preferably, the signal conversion module in the monitoring backend sends the converted specific pressure parameter values ​​to the data processing module in the monitoring backend. 4) The monitoring backend compares and analyzes multiple pressure parameter values ​​and set thresholds through its own data processing module. When a certain pressure parameter value continuously exceeds the set threshold within a set time, it indicates that the scraper conveyor is continuously in an overload conveying state. At this time, the monitoring backend issues an alarm signal and prompts the data acquisition scraper (2) number where the pressure sensor (11) is located. Preferably, when the monitoring backend cannot receive the pressure signal from the pressure sensor (11) on the data acquisition scraper (2) of a certain number, it indicates that the pressure sensor (11) at that location is faulty and needs to be repaired or replaced. Preferably, the monitoring backend is also equipped with an audible and visual alarm, which activates simultaneously with the alarm signal to issue a warning. 5) After receiving the alarm signal, the staff should reduce the conveyor flow rate to prevent the conveyor from being continuously overloaded; There are multiple data acquisition scrapers (2), and the multiple data acquisition scrapers (2) are equidistantly distributed along the length of the transmission chain (6). The design of a single data acquisition scraper (2) located between two adjacent conveyor scrapers (9) enables distributed and continuous pressure data acquisition of the scraper chain, thereby providing more timely and accurate early warning. The design of welding or bolting between the data acquisition scraper (2) and the transmission chain (6) facilitates the quick assembly and disassembly of the data acquisition scraper (2) according to the actual situation. The design of the cross mounting groove (13) with its width gradually decreasing from the middle to the edge can better limit the cross extrusion plate, making the pressure generated by the pressure sensor (11) more stable and ensuring the accuracy of pressure data acquisition. The design of the fixed groove (8) with a cross-section of one-third circle ensures that the diameter of the limiting ball (4) is greater than the width of the fixed groove (8), thereby limiting the rectangular limiting slider (5) and preventing it from slipping out of the rectangular limiting groove (12), which would cause the device to malfunction. The design that the sum of the length of the cross extrusion block (10) and the length of the pressure sensor (11) is greater than the depth of the cross mounting groove (13) ensures that the cross extrusion block (10) and the pressure sensor (11) are in contact, thereby generating pressure on them for data acquisition. The gathering scraper (7) is designed to bend and extend from one end to three-quarters of the way away from the pressure scraper (3) at an obtuse angle, and then continue to bend and extend to the other end at an obtuse angle. This design can gather the material towards the middle of the pressure scraper (3), so that the pressure is concentrated and the pressure dispersion is prevented from affecting the accuracy of pressure data acquisition. The design that the other end of the gathering scraper (7) does not contact the transmission chain (6) can avoid friction between the gathering scraper (7) and the transmission chain (6), which would affect the pressure-bearing scraper (3) and thus affect the pressure data acquisition. The rectangular limiting groove (12) in conjunction with the rectangular limiting slider (5) enables the pressure-bearing scraper (3) to move smoothly toward the data acquisition scraper (2) when it is under pressure, thereby ensuring the accuracy of the collected pressure data. The cross extrusion block (10) in conjunction with the pressure sensor (11) can continuously collect the pressure data of the material extrusion bearing scraper (3) to determine whether the scraper machine is overloaded and to issue an early warning. The goal is to continuously collect pressure data of the material extrusion bearing scraper (3) by multiple pressure sensors (11) distributed on the scraper chain, thereby determining whether the scraper machine is overloaded and issuing an early warning to prevent the scraper chain from breaking due to excessive overload conveying time.

[0013] It should be noted that, unless otherwise explicitly specified and limited, the terms "placed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections such as folded edges, rivets, pins, adhesives, and welds; detachable connections such as threaded connections, snap-fit ​​connections, and hinges; integral connections; electrical connections; direct connections; or indirect connections via an intermediate medium; or internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0014] The above embodiments are preferred embodiments of the present invention. To save space, the applicant has not added other embodiments, but this is not intended to limit the scope of the present invention. Any person skilled in the art can make some modifications without departing from the scope of the present invention; that is, all equivalent modifications made in accordance with the present invention should be covered by the scope of the present invention.

Claims

1. A method for collecting and issuing early warning data on pressure in a distributed conveyor, characterized in that: Includes the following steps: 1) During the operation of the scraper conveyor, the pressure scraper is squeezed by the material and moves toward the data acquisition scraper, which in turn drives the cross extrusion block to insert into the cross mounting groove, generating pressure on the pressure sensor; 2) Pressure data is continuously collected by pressure sensors distributed on multiple data acquisition scrapers on the scraper chain in the distributed conveyor pressure data acquisition and early warning device, and the pressure data is sent to the monitoring backend. Initially, the pressure sensors and the monitoring backend interact with each other to number the multiple data acquisition scrapers. 3) After receiving the pressure data, the monitoring backend converts the pressure data into specific pressure parameter values ​​through its own signal conversion module; 4) The monitoring backend compares and analyzes multiple pressure parameter values ​​and set thresholds through its own data processing module. When a certain pressure parameter value continuously exceeds the set threshold within a set time, it indicates that the scraper conveyor is continuously in an overload conveying state. At this time, the monitoring backend issues an alarm signal and prompts the data acquisition scraper number where the pressure sensor that continuously exceeds the threshold is located. 5) After receiving the alarm signal, the staff should reduce the conveyor flow rate to prevent the conveyor from being continuously overloaded; The distributed conveyor pressure data acquisition and early warning method employs a distributed conveyor pressure data acquisition and early warning device for pressure data acquisition. This device comprises a main component and a pressure data acquisition component. The main component consists of a scraper conveyor chute, a transmission chain, and conveyor scrapers. The scrapers are positioned between two transmission chains, with each end of the scraper correspondingly connected to one of the two chains. Multiple scrapers are equidistantly distributed along the length of the transmission chain, forming a scraper chain that is movably positioned within the scraper chute. The pressure data acquisition component comprises a data acquisition scraper, a pressure-bearing scraper, a limit ball, a rectangular limit slider, a converging scraper, a fixing groove, a cross-shaped extrusion block, a pressure sensor, a rectangular limit chute, a cross-shaped mounting groove, and a flexible protective net. The data acquisition scraper is positioned between two transmission chains. The scraper blade is connected to two transmission chains at both ends. A cross-shaped mounting groove is formed on the data acquisition scraper blade, and a pressure sensor is placed inside the groove. A flexible protective net cover is placed on the groove. Two rectangular limiting grooves are formed on the side of the scraper blade. These grooves are through-slot structures, and are located near both ends of the scraper blade. Two rectangular limiting sliders are placed on the pressure-bearing scraper blade, corresponding one-to-one with the two grooves. One end of each slider is connected to the pressure-bearing scraper blade, and the other end extends from one side of the scraper blade through the corresponding groove to the other side. A fixing groove is formed at the other end of the slider, and a limiting ball is placed inside. A cross-shaped extrusion block is placed on the pressure-bearing scraper blade, extending into the groove and contacting the pressure sensor. Converging scrapers are placed at both ends of the pressure-bearing scraper blade.

2. The method for collecting and issuing early warning data on pressure of a distributed conveyor according to claim 1, characterized in that... The cross-shaped extrusion block, in conjunction with a pressure sensor, can continuously collect pressure data of the material extruding the pressure-bearing scraper, thereby determining whether the scraper conveyor is operating under overload and issuing an early warning.

3. The method for collecting and issuing early warning data on pressure of a distributed conveyor according to claim 1, characterized in that... There are multiple data acquisition scrapers, which are equidistantly distributed along the length of the transmission chain. Each data acquisition scraper is located between two adjacent conveyor scrapers, enabling distributed and continuous pressure data acquisition of the scraper chain.

4. A distributed conveyor pressure data acquisition and early warning method according to claim 1 or 3, characterized in that... The data acquisition scraper and the transmission chain are welded or bolted together.

5. The method for collecting and issuing early warning data on pressure of a distributed conveyor according to claim 1, characterized in that... The width of the cross mounting groove gradually decreases from the middle to the edge. The cross mounting groove is located in the middle of the side of the data acquisition scraper, which can better limit the cross extrusion plate and make the pressure generated by the pressure sensor more stable.

6. The method for collecting and issuing early warning data on pressure of a distributed conveyor according to claim 1, characterized in that... The fixed groove has a one-third circular cross-section, which ensures that the diameter of the limiting ball is greater than the width of the fixed groove, thereby limiting the rectangular limiting slider and preventing it from slipping out of the rectangular limiting groove.

7. The method for collecting and issuing early warning data on pressure of a distributed conveyor according to claim 1, characterized in that... The cross-shaped extrusion block and the cross-shaped mounting groove correspond to each other. The sum of the length of the cross-shaped extrusion block and the thickness of the pressure sensor is greater than the depth of the cross-shaped mounting groove, which can ensure that the cross-shaped extrusion block and the pressure sensor are in contact, thereby generating pressure to collect data.

8. The method for pressure data acquisition and early warning of a distributed conveyor according to claim 1, characterized in that... The gathering scraper bends at an obtuse angle from one end to the pressure scraper, extending away from the pressure scraper to three-quarters of its length, and then continues to bend at an obtuse angle to the other end. This gathers the material towards the center of the pressure scraper, concentrating the pressure and preventing pressure dispersion.

9. A method for collecting and issuing early warning data on pressure of a distributed conveyor according to claim 1 or 8, characterized in that... The other end of the gathering scraper is not in contact with the transmission chain, which can avoid friction between the gathering scraper and the transmission chain, thus preventing the pressure-bearing scraper from moving under pressure.

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