Scraper chain breakage protection device

Abstract

The utility model relates to the technical field of scraper chain protection, and discloses a scraper chain breakage protection device which comprises an arch-shaped frame, a controller is fixedly connected to the middle end of the top of the arch-shaped frame, an alarm is fixedly connected to the top of the rear end of the arch-shaped frame, and a two-way threaded rod is rotationally connected to the interior of the arch-shaped frame. Outer rings of the front end and the rear end of the bidirectional threaded rod are in threaded connection with nut pairs, and the left side of the nut pair at the front end is fixedly connected with a connecting plate. The two-way threaded rod drives the nut pair to move so that the connecting plate and the movable plate can move to adjust the tension of the chain, and in the moving process of the chain, the electronic scale can detect the pressure generated by the chain on the electronic scale and transmit data to the controller, workers are reminded of handling, and the working efficiency is improved. Further expansion of faults of the scraper machine due to the fact that the chain breakage condition is not found in time is avoided, normal operation of the scraper machine is guaranteed, and the problems of equipment damage, production interruption and the like possibly caused by chain breakage are reduced.

Description

Technical Field

[0001] This utility model relates to the field of scraper conveyor chain protection technology, specifically a scraper conveyor chain breakage protection device. Background Technology

[0002] Scraper conveyors are transport machinery used in coal mine working faces. They are mainly used for transporting materials in coal mining faces and mining area roadways, and can also be used in coal roadways and semi-coal-rock roadway excavation faces. They can transport materials upwards or downwards, with upward transport generally not exceeding 35 degrees and downward transport generally not exceeding 25 degrees, ideally not exceeding 20 degrees in practice.

[0003] As production scale continues to expand in these industries, the requirements for conveying efficiency and reliability of scraper conveyors are also increasing. As a key component of scraper conveyors, the chain's operating condition directly affects the normal operation of the equipment. During long-term, high-load conveying operations, the chain may break due to fatigue, wear, overload, and other factors.

[0004] If the chain is too tight, it will increase the friction between the chain and the sprocket, accelerating the wear of the chain and sprocket. Once the wear reaches a certain level, the chain may suddenly break during operation. If the chain break is not detected in time, the drive unit of the scraper conveyor may continue to operate, causing the scraper of the broken chain to lose its restraint and collide and accumulate inside the scraper conveyor, resulting in damage to the internal structure of the scraper conveyor, such as chutes and baffles, and further expanding the scope of the failure.

[0005] To address the aforementioned issues, a chain breakage protection device for scraper conveyors is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a chain breakage protection device for scraper conveyors, which solves the problem in the background technology that if the chain is too tight, it will increase the friction between the chain and the sprocket, accelerate the wear of the chain and the sprocket, and once the wear reaches a certain level, the chain may suddenly break during operation. If the chain breakage is not detected in time, the scope of the fault will further expand.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a chain breakage protection device for a scraper conveyor, comprising an arched frame, a controller fixedly connected to the top middle of the arched frame, an alarm fixedly connected to the top of the rear end of the arched frame, a bidirectional threaded rod rotatably connected inside the arched frame, and nut pairs threadedly connected to the outer rings of both ends of the bidirectional threaded rod, a connecting plate fixedly connected to the left side of the front end of the nut pair, a moving plate fixedly connected to the left side of the rear end of the nut pair, a connecting disc fixedly connected to the left side of the moving plate, a first motor fixedly connected to the left side of the connecting disc, a sprocket at the output end of the first motor, a rotating rod fixedly connected inside the front end of the sprocket, and the rotating rod rotatably connected to the connecting disc, a fixed plate rotatably connected to the left side of the rotating rod, a limiting disc fixedly connected to the outer ring of the front end of the bidirectional threaded rod, the limiting disc being threadedly connected to the arched frame by bolts, an electronic scale fixedly connected to the inner wall of the connecting plate, and the electronic scale being electrically connected to the controller, and a cleaning component being provided inside the fixed plate.

[0008] By adopting the above technical solution, if the chain tension between the two sprockets is insufficient, the tension is reflected to the electronic scale, which displays the data. The electronic scale then transmits the data to the controller, which processes the data and determines whether to issue an alarm or adjust the chain tension accordingly.

[0009] As a further description of the above technical solution: the cleaning component includes a support column, which is fixedly connected to the four corners of the right side of the fixing plate. A grooved plate is fixedly connected to the right side of the support column, and a second motor is fixedly connected to the middle section of the left side of the grooved plate.

[0010] By adopting the above technical solution, the grooved plate is supported and fixed by the support column.

[0011] As a further description of the above technical solution: a spring is fixedly connected to the left side of the electronic scale, and the spring is fixedly connected to the moving plate.

[0012] By adopting the above technical solution, the spring is pulled, and the electronic scale displays the data.

[0013] As a further description of the above technical solution: a rotating plate is fixedly connected to the output end of the second motor, and diagonal rods are rotatably connected to both ends of the rotating plate.

[0014] By adopting the above technical solution, the diagonal rod is pulled by rotating the plate.

[0015] As a further description of the above technical solution: a movable disk is rotatably connected to one end of the inclined rod, and a uniformly distributed guide block is fixedly connected to the outer wall of the left side of the groove plate.

[0016] By adopting the above technical solution, the moving disk is pulled by a diagonal bar.

[0017] As a further description of the above technical solution: the outer ring of the guide block is slidably connected to a moving block, and the moving block is fixedly connected to the moving disk.

[0018] By adopting the above technical solution, the guide block guides the moving block, thereby driving the moving disk to move.

[0019] As a further description of the above technical solution: a first cleaning plate is fixedly connected to the right side of the mobile disk at the top.

[0020] By adopting the above technical solution, the outer chain is cleaned by the first cleaning plate.

[0021] As a further description of the above technical solution: a rotating cleaning plate is rotatably connected to one end of the first cleaning plate, and a second cleaning plate is fixedly connected to the right side of the bottom movable disk.

[0022] By adopting the above technical solution, when cleaning the inner wall, if there is no cargo on it, the rotating cleaning plate is flipped over, the first cleaning plate and the rotating cleaning plate clean one side, and the second cleaning plate cleans the other side.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] 1. This utility model provides a chain breakage protection device for scraper conveyors. First, the chain tension is adjusted by moving the connecting plate and the moving plate by moving the nut pair driven by the bidirectional threaded rod. During the chain movement, the electronic scale can detect the pressure exerted by the chain and transmit the data to the controller. If the pressure is lower than the preset threshold, the controller can promptly activate the alarm to remind the staff to handle the situation. This prevents the scraper conveyor malfunction from escalating due to the failure to detect the chain breakage in time, ensuring the normal operation of the scraper conveyor and reducing equipment damage and production interruptions that may be caused by the chain breakage.

[0025] 2. The scraper conveyor chain breakage protection device provided by this utility model, by starting the second motor, the output end of which drives the rotating plate to rotate, causing the inclined rod to move, and then driving the moving disk to move along the guide block. The first cleaning plate fixed to the right side of the top moving disk, the second cleaning plate fixed to the right side of the bottom moving disk, and the rotating cleaning plate rotatably connected to one end of the first cleaning plate can clean the scraper conveyor chain as the moving disk moves, remove impurities from the chain, and prevent impurities from entering the chain connection parts, which may cause accelerated wear or chain jamming, thereby extending the service life of the chain and ensuring the normal and stable operation of the chain. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the nut assembly of this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the second motor of this utility model.

[0029] In the diagram: 1. Arched frame; 2. Controller; 3. Alarm; 4. Bidirectional threaded rod; 5. Limiting plate; 6. Bolt; 7. Sprocket; 8. Connecting plate; 9. First motor; 10. Rotating rod; 11. Nut pair; 12. Moving plate; 13. Electronic scale; 14. Connecting plate; 15. Fixing plate; 16. Support column; 17. Rotating plate; 18. Second motor; 19. Diagonal rod; 20. Moving plate; 21. Guide block; 22. Moving block; 23. First cleaning plate; 24. Rotating cleaning plate; 25. Second cleaning plate; 26. Spring; 27. Groove plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0032] Reference Figure 1 This utility model discloses a chain breakage protection device for a scraper conveyor, comprising an arched frame 1, a connecting plate 8 fixedly connected to the left side of a movable plate 12, a first motor 9 fixedly connected to the left side of the connecting plate 8, a sprocket 7 at the output end of the first motor 9, a rotating rod 10 fixedly connected inside the front sprocket 7, and the rotating rod 10 rotatably connected to the connecting plate 8. When the first motor 9 is working, it can drive the sprocket 7 to rotate, thereby driving the chain to engage and driving the other end of the sprocket 7 to rotate. A fixed plate 15 is rotatably connected to the left side of the rotating rod 10.

[0033] Reference Figure 2A controller 2 is fixedly connected to the top center of the arched frame 1. The controller 2 is the control core of the entire device, responsible for receiving the detection signal from the electronic scale 13 and controlling the operation of components such as the alarm 3 according to the preset logic. An alarm 3 is fixedly connected to the top rear end of the arched frame 1. A bidirectional threaded rod 4 is rotatably connected inside the arched frame 1. Nut pairs 11 are threadedly connected to the outer rings of both ends of the bidirectional threaded rod 4. The nut pairs 11 are guided and limited by a limit rod. A connecting plate 14 is fixedly connected to the left side of the front nut pair 11. A limit plate 5 is fixedly connected to the outer ring of the front end of the bidirectional threaded rod 4. The limit plate 5 is connected to the arched frame 1 by bolts 6. The connection method can limit the bidirectional threaded rod 4 to prevent it from rotating excessively or moving axially. An electronic scale 13 is fixedly connected to the inner wall of the connecting plate 14, and the electronic scale 13 is electrically connected to the controller 2. A spring 26 is fixedly connected to the left side of the electronic scale 13, and the spring 26 is fixedly connected to the moving plate 12. The electronic scale 13 is connected to the moving plate 12 through the spring 26. When the chain is running normally or an abnormal situation occurs, the force generated by the chain on the moving plate 12 will be transmitted to the electronic scale 13 through the spring 26. The electronic scale 13 detects the pressure change and transmits the signal to the controller 2. The controller 2 judges the chain status based on the signal.

[0034] Reference Figure 3 The fixed plate 15 contains a cleaning assembly, which includes support columns 16. The support columns 16 are fixedly connected to the four right corners of the fixed plate 15. A grooved plate 27 is fixedly connected to the right side of the support columns 16. A second motor 18 is fixedly connected to the middle left section of the grooved plate 27. A rotating plate 17 is fixedly connected to the output end of the second motor 18. Diagonal rods 19 are rotatably connected to both ends of the rotating plate 17. A movable disk 20 is rotatably connected to one end of each diagonal rod 19. Evenly distributed guide blocks 21 are fixedly connected to the outer left wall of the grooved plate 27. A movable block 22 is slidably connected to the outer ring of the guide block 21, and the movable block 22 is fixedly connected to the movable disk 20. When the second motor 18 is working, the rotating plate 17 rotates, driving the inclined rod 19 to move. The inclined rod 19 pushes the moving plate 20 to move along the guide block 21 through the moving block 22, so that the first cleaning plate 23, the rotating cleaning plate 24 and the second cleaning plate 25 clean the scraper conveyor chain and remove impurities from the chain. The first cleaning plate 23 is fixedly connected to the right side of the top moving plate 20, and the rotating cleaning plate 24 is rotatably connected to one end of the first cleaning plate 23. The second cleaning plate 25 is fixedly connected to the right side of the bottom moving plate 20. When there is no goods on the chain, the rotating cleaning plate 24 is rotated to clean the chain at the other end.

[0035] Working Principle: The scraper conveyor chain breakage protection device is installed at a suitable position on the scraper conveyor chain, ensuring that the chain can contact the device during normal operation. During operation, the scraper conveyor chain drives the sprocket 7 to rotate. Since the sprocket 7 is fixed on the rotating rod 10, the rotating rod 10 is rotatably connected to the connecting plate 8. The connecting plate 8 is fixed on the moving plate 12. The bidirectional threaded rod 4 drives the nut pair 11 to move, causing the connecting plate 14 and the moving plate 12 to move, adjusting the chain tension. The electronic scale 13 is fixed to the inner wall of the connecting plate 14 and is electrically connected to the controller 2. When the chain moves, it exerts a force on the electronic scale 13. The electronic scale 13 transmits the detected pressure data to the controller 2. If the chain breaks, the pressure on the electronic scale 13 will change. The controller 2 judges the chain status according to a preset pressure threshold. When the pressure is below the threshold, it is determined to be a chain breakage. The controller 2 controls the alarm 3 to sound an alarm, reminding staff to handle the situation promptly. The second motor 18 is started, and its output drives the rotating plate 17 to rotate. The inclined rods 19 connected to both ends of the rotating plate 17 move with the rotation of the rotating plate 17. Driven by the inclined rods 19, the moving disk 20 moves back and forth along the guide block 21. The first cleaning plate 23 fixed to the right side of the top moving disk 20, the second cleaning plate 25 fixed to the right side of the bottom moving disk 20, and the rotating cleaning plate 24 rotatably connected to one end of the first cleaning plate 23 will clean the scraper conveyor chain with the movement of the moving disk 20, removing impurities from the chain and ensuring the normal operation of the chain. When cleaning, the rotating cleaning plate 24 needs to be flipped over for cleaning.

[0036] 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.

[0037] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chain breakage protection device for a flight bar chain, comprising an arched frame (1), characterised in that: The arch frame (1) top middle end is fixedly connected with a controller (2), the arch frame (1) rear end top is fixedly connected with an alarm (3), the arch frame (1) inside is rotatably connected with a two-way threaded rod (4), the two-way threaded rod (4) front and rear two ends outer circle are all threadedly connected with nut pairs (11), the nut pair (11) left side is fixedly connected with a connecting plate (14) at the front end, the nut pair (11) left side is fixedly connected with a moving plate (12) at the rear end, the moving plate (12) left side is fixedly connected with a connecting disc (8), the connecting disc (8) left side is fixedly connected with a first motor (9), the first motor (9) output end sprocket (7), the sprocket (7) inside is fixedly connected with a rotating rod (10), and rotating rod (10) is rotatably connected with connecting disc (8), the rotating rod (10) left side is rotatably connected with a fixed plate (15), the two-way threaded rod (4) front end outer circle is fixedly connected with a limit disc (5), the limit disc (5) and the arch frame (1) are connected by bolt (6) screw thread, the connecting plate (14) inner wall is fixedly connected with an electronic scale (13), and the electronic scale (13) is electrically connected with the controller (2), the fixed plate (15) inside is provided with a cleaning assembly.

2. A chain breakage protection device for an apron chain as claimed in claim 1, characterised in that: The cleaning assembly includes a support column (16), the support column (16) is fixedly connected to the right side of the four corners of the fixed plate (15), the support column (16) is fixedly connected with a groove plate (27), and the groove plate (27) is fixedly connected with a second motor (18) on the left side of the middle segment.

3. A chain breakage protection device for an apron chain as claimed in claim 1, characterized in that: The electronic scale (13) left side is fixedly connected with a spring (26), and the spring (26) is fixedly connected with the moving plate (12).

4. A chain breakage protection device for an apron chain as claimed in claim 2, characterised in that: The second motor (18) output end is fixedly connected with a rotating plate (17), and the rotating plate (17) both ends are rotatably connected with an inclined rod (19).

5. A chain breakage protection device for an apron chain as claimed in claim 4, characterised in that: One end of the inclined rod (19) is rotatably connected with a moving disc (20), and the groove plate (27) left side outer wall is fixedly connected with a plurality of guide blocks (21) distributed uniformly.

6. A chain breakage protection device for an apron chain as claimed in claim 5, characterised in that: The guide block (21) outer circle is slidably connected with a moving block (22), and the moving block (22) is fixedly connected with the moving disc (20).

7. A chain breakage protection device for an apron chain as claimed in claim 5, characterised in that: The moving disc (20) right side is fixedly connected with a first cleaning plate (23) at the top.

8. A chain breakage protection device for an apron chain as claimed in claim 7, characterised in that: One end of the first cleaning plate (23) is rotatably connected with a rotating cleaning plate (24), and the moving disc (20) right side is fixedly connected with a second cleaning plate (25) at the bottom.

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