A safety coal conveying machine for coal mine transportation

Abstract

This utility model relates to the field of coal conveyors and discloses a safe coal conveyor for coal mine transportation. The coal conveyor includes a base, a rotating roller, a conveyor belt, and a protective plate. The rotating roller has a limiting mechanism at both ends, including symmetrically arranged limiting rings and a linkage mechanism for driving synchronous adjustment of the spacing. A protective pad is fixed inside the protective plate. The protective plate is detachably locked to a fixed component via a limiting assembly, which includes a retractable third sliding rod and an actuating mechanism linked to a sliding block with an internal inclined groove. This utility model prevents conveyor belt deviation at its source by actively limiting the rotating roller and provides buffer protection through the protective pad. Simultaneously, the limiting assembly enables quick, tool-free disassembly and assembly of the protective plate, solving the problems of easy rotation of the rotating roller, easy wear of the conveyor belt, and inconvenient disassembly and assembly of the protective structure. It has the effects of stable and safe operation, effective protection of vulnerable parts, and convenient and efficient maintenance.

Description

Technical Field

[0001] This utility model relates to the field of coal conveyors, and in particular to a safe coal conveyor for coal mine transportation. Background Technology

[0002] Belt conveyors are indispensable key transportation equipment in coal mine production systems, responsible for continuously transporting mined coal from the working face to the surface or designated locations. In traditional belt conveyors, the rotating rollers driving the conveyor belt are prone to slight axial movement or deviation under high load and long-term continuous operation due to uneven force or vibration. This axial instability of the rotating rollers is one of the direct causes of the conveyor belt deviating from its preset running trajectory, i.e., the phenomenon of "belt misalignment." Once the conveyor belt deviates, its edges will come into contact with the rigid protective baffles on both sides of the conveyor frame, generating severe friction. This not only severely wears down or even tears the conveyor belt, significantly shortening its service life, but the heat generated by friction also poses a serious safety hazard in a coal dust-rich environment.

[0003] Furthermore, when it is necessary to replace worn conveyor belts or perform routine maintenance on the equipment, maintenance personnel must first remove the protective guards on both sides. Existing protective guards are usually installed by bolt fastening. The disassembly and assembly process not only requires carrying special tools and is cumbersome, but also has low work efficiency and safety risks in the confined space and poor lighting environment of underground coal mines, thus prolonging the equipment's downtime for maintenance. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a safe coal conveyor for coal mine transportation, aiming to improve the problems of the rotating rollers being prone to axial displacement, leading to belt misalignment and wear, as well as the cumbersome disassembly and assembly of the protective structure, low maintenance efficiency, and poor safety of the coal conveyor used for coal mine transportation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safe coal conveyor for coal mine transportation, comprising: a base, a motor, a rotating roller, a conveyor belt, a protective plate, and a fixing component; as well as a limiting mechanism, a protective pad, and a limiting component.

[0006] The limiting mechanism includes symmetrically arranged limiting rings and a linkage mechanism for driving the limiting rings to synchronously adjust the spacing; the protective pad is a buffer structure disposed on the inner side of the protective plate; the limiting component includes a retractable third sliding rod and an actuation mechanism linked to the third sliding rod.

[0007] Furthermore, the limiting mechanism is located at both ends of the rotating roller; the protective pad is fixed on the inner side of the protective plate facing the conveyor belt; the fixing component is located on the base, and the protective plate is detachably locked to the fixing component by the limiting component. The third sliding rod of the limiting component is telescopically inserted through the fixing component and cooperates with another part of the fixing component.

[0008] Preferably, the limiting mechanism further includes a cylinder, a first connecting block, a first slide rail, and a second connecting block, and the linkage mechanism includes a first rotating block, a second rotating block, and a third rotating block; the cylinder drives the first connecting block, and through the linkage of the first rotating block, the second rotating block, and the third rotating block, the second connecting block sliding along the first slide rail moves synchronously with the third rotating block, so as to drive the limiting rings on both sides to move.

[0009] Preferably, the actuation mechanism includes a sliding block, a first sliding rod, and a second sliding rod; the first sliding rod is used to drive the second sliding rod to move, the second sliding rod cooperates with the sliding block to cause the sliding block to be displaced, and the sliding block is connected to the third sliding rod.

[0010] Preferably, the sliding block is provided with a sloped groove, and the end of the second sliding rod slides in the sloped groove to convert the movement of the second sliding rod into the lateral displacement of the sliding block.

[0011] Preferably, the actuation mechanism further includes a second slide rail, along which the sliding block slides.

[0012] Preferably, the actuation mechanism further includes a third fixing block, through which the first sliding rod passes and the second sliding rod is accommodated within the third fixing block.

[0013] Preferably, the fixing component includes a first fixing block and a second fixing block; the limiting component further includes a spring and a fixing plate; the third sliding rod passes through the second fixing block and is connected to the fixing plate, and its end is retractably inserted into the limiting hole of the first fixing block; the spring is sleeved on the third sliding rod and abuts against the second fixing block and the fixing plate.

[0014] Preferably, the bottom of the protective plate is provided with a positioning rod, which is slidably inserted into the base.

[0015] This utility model has the following beneficial effects: In this invention, a limiting mechanism is installed to precisely and reliably limit the axial movement of the core rotating roller of the conveyor, effectively preventing the roller from shifting during operation and fundamentally solving the problem of conveyor belt misalignment caused by roller deviation. This structure avoids abnormal frictional heat generation caused by conveyor belt misalignment, reduces the risk of igniting coal dust in coal mine dust environments, and greatly enhances the overall operational safety of the machine.

[0016] In this invention, a protective pad is added to the inside of the protective plate to provide flexible cushioning protection for the conveyor belt. When the conveyor belt deviates slightly, the protective pad can effectively absorb the impact and reduce wear, avoiding rapid damage or tearing caused by direct contact between the edge of the conveyor belt and the hard machine body, thereby extending the service life of the conveyor belt and reducing maintenance costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a safety coal conveyor for coal mine transportation proposed in this utility model; Figure 2 This is a schematic diagram of the rotating roller section of a safety coal conveyor for coal mine transportation proposed in this utility model. Figure 3 This is a schematic diagram of the protective pad structure of a safety coal conveyor for coal mine transportation proposed in this utility model; Figure 4 This is a schematic diagram of the spring section of a safety coal conveyor for coal mine transportation proposed in this utility model.

[0018] Legend: 1. Base; 2. Motor; 3. Conveyor belt; 4. Limiting mechanism; 401. Cylinder; 402. First connecting block; 403. Limiting ring; 404. First slide rail; 405. Second connecting block; 406. First rotating block; 407. Second rotating block; 408. Third rotating block; 5. Protective plate; 6. First fixing block; 7. Second fixing block; 8. Rotating roller; 9. Limiting assembly; 901. First sliding rod; 902. Third fixing block; 903. Second sliding rod; 904. Second slide rail; 905. Sliding block; 906. Third sliding rod; 907. Spring; 908. Fixing plate; 10. Protective pad. Detailed Implementation

[0019] 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.

[0020] Please refer to Figures 1 to 4 This utility model provides a safe coal conveyor for coal mine transportation, which aims to solve the technical problems in the prior art, such as the easy axial displacement of the conveyor rollers leading to belt misalignment and wear, and the inconvenience and low safety of the protective structure.

[0021] like Figure 1 As shown, the safety coal conveyor for coal mine transportation includes a base 1, a motor 2, a rotating roller 8, a conveyor belt 3, a protective plate 5, and a fixing assembly. The motor 2 is fixedly connected to the base 1. The rotating roller 8 is rotatably connected to the support structure of the base 1 through bearings. The output end of the motor 2 is connected to the rotating roller 8 to drive the rotating roller 8 to rotate. The conveyor belt 3 is wound around the rotating roller 8 and other rollers. The protective plate 5 is set on both sides of the conveyor belt 3. The fixing assembly is fixedly set on the base 1 for installing the protective plate 5. The fixing assembly includes a first fixing block 6 and a second fixing block 7 arranged at intervals.

[0022] In a preferred embodiment, the limiting mechanism 4 is specifically constructed as follows: a cylinder 401 is fixedly mounted on the base 1, the output end of the cylinder 401 is fixedly connected to the first connecting block 402, the first connecting block 402 is rotatably connected to one end of the first rotating block 406 and the second rotating block 407 respectively, the other end of the first rotating block 406 is rotatably connected to the second connecting block 405, the second connecting block 405 is slidably connected to the first slide rail 404 fixed on the base 1, the other end of the second rotating block 407 is rotatably connected to the third rotating block 408, a limiting ring 403 on one side is fixed on the second connecting block 405, and a limiting ring 403 on the other side is fixed on the third rotating block 408.

[0023] Reference Figure 1 and Figure 2 The limiting mechanism 4 is symmetrically arranged at both ends of the rotating roller 8. The limiting mechanism 4 includes a limiting ring 403 and a linkage mechanism that drives the limiting ring 403 to synchronously adjust the spacing. The inner wall of the limiting ring 403 is in contact with the outer peripheral surface of the end of the rotating roller 8 to axially limit the rotating roller 8. Specifically, the limiting mechanism 4 also includes a cylinder 401, a first connecting block 402, a first slide rail 404, and a second connecting block 405. The linkage mechanism includes a first rotating block 406, a second rotating block 407, and a third rotating block 408. 8; The output end of cylinder 401 is fixedly connected to the first connecting block 402. The first connecting block 402 is rotatably connected to the first rotating block 406 and the second rotating block 407. The second connecting block 405 is slidably connected to the first slide rail 404. The second connecting block 405 is rotatably connected to the first rotating block 406. The third rotating block 408 is rotatably connected to the second rotating block 407. A limiting ring 403 on one side is fixedly connected to the second connecting block 405, and a limiting ring 403 on the other side is fixedly connected to the third rotating block 408.

[0024] Reference Figure 1 and Figure 3 The protective pad 10 is fixedly attached to the inner surface of the protective plate 5 facing the conveyor belt 3 by adhesive or fasteners, and is used to provide cushioning protection when the conveyor belt 3 deviates.

[0025] Reference Figure 1 , Figure 3 and Figure 4 The protective plate 5 is detachably locked between the first fixed block 6 and the second fixed block 7 by the limiting component 9; the limiting component 9 includes a third sliding rod 906 and an actuation mechanism linked to the third sliding rod 906; the actuation mechanism includes a sliding block 905, a first sliding rod 901, a second sliding rod 903, a third fixed block 902, and a second slide rail 904; the first sliding rod 901 passes through the third fixed block 902, the second sliding rod 903 is accommodated in the third fixed block 902 and fixedly connected to the first sliding rod 901, the sliding block 905 has a sloped groove, and the end of the second sliding rod 903 is slidably disposed on... Within the inclined groove, the sliding block 905 is slidably connected to the second fixed block 7 via the second slide rail 904, and the sliding block 905 is fixedly connected to the third sliding rod 906; the limiting assembly 9 also includes a spring 907 and a fixing plate 908, the third sliding rod 906 passes through the second fixed block 7 and is fixedly connected to the fixing plate 908, and its end can be telescopically inserted into the preset limiting hole in the first fixed block 6, the spring 907 is sleeved on the third sliding rod 906, and the two ends of the spring 907 respectively abut against the second fixed block 7 and the fixing plate 908; a positioning rod is fixedly connected to the bottom of the protective plate 5, and the positioning rod is slidably inserted into the base 1.

[0026] The specific structure of the limiting component 9 is as follows: the second slide rail 904 is fixed to the side of the second fixed block 7, the sliding block 905 is slidably fitted on the second slide rail 904, the sliding block 905 is provided with an inclined groove, one end of the third sliding rod 906 is fixedly connected to the sliding block 905, the third sliding rod 906 can slide through the second fixed block 7, the fixing plate 908 is fixed to one end of the third sliding rod 906 after it passes through the second fixed block 7, the spring 907 is sleeved on the third sliding rod 906 and its two ends respectively abut against the second fixed block 7 and the fixing plate 908, and the other end of the third sliding rod 906 extends toward the first fixed block 6 and can be inserted into the limiting hole of the first fixed block 6.

[0027] The actuation mechanism is a first sliding rod 901 that can be slidably mounted on the protective plate 5 or its attached bracket. A third fixing block 902 is fixed to the lower end of the first sliding rod 901. A second sliding rod 903 is housed in the third fixing block 902 and fixedly connected to the first sliding rod 901. The lower end of the second sliding rod 903 extends into and slides into the inclined groove of the sliding block 905.

[0028] Working Principle: When the new type of safe coal conveyor for coal mine transportation is in operation, motor 2 is started when coal needs to be transported. Motor 2 drives the rotating roller 8 to rotate. The friction between the rotating roller 8 and the conveyor belt 3 drives the conveyor belt 3 to circulate, thus transporting the coal. To prevent axial displacement of the rotating roller 8 during transport, cylinder 401 is started. The output end of cylinder 401 pushes or pulls the first connecting block 402. The first connecting block 402 drives the first rotating block 406 and the second rotating block 407, which are rotatably connected to it, to move. Through the linkage mechanism formed by the first rotating block 406, the second rotating block 407, and the third rotating block 408, the second connecting block 405 sliding on the first slide rail 404 and the third rotating block 408 move synchronously towards or away from each other, thereby causing the limiting rings 403 on both sides to tighten or loosen. When tightened, the inner wall of the limiting ring 403 tightly fits the end of the rotating roller 8, thus achieving stable axial limiting of the rotating roller 8. When the conveyor belt 3 is running... When a slight lateral deviation occurs, the edge of the conveyor belt 3 will contact the protective pad 10 on the inner side of the protective plate 5. The protective pad 10 provides cushioning protection for the conveyor belt 3, preventing it from being damaged by direct contact with the hard machine body. When it is necessary to disassemble or replace the protective plate 5, press down on the first sliding rod 901. The first sliding rod 901 drives the second sliding rod 903 in the third fixed block 902 to move downward. The end of the second sliding rod 903 slides in the inclined groove of the sliding block 905, converting the downward linear motion into the lateral sliding of the sliding block 905 along the second slide rail 904. The sliding block 905 drives the third sliding rod 906, which is fixedly connected to it, to slide laterally. While the third sliding rod 906 moves the fixed plate 908, it squeezes the spring 907 and causes its end to disengage from the limiting hole of the first fixed block 6, thus releasing the lock. At this time, slide the protective plate 5 upward so that the positioning rod at its bottom slides out of the base 1, thus completing the quick disassembly and replacement of the protective plate 5.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safe coal mine coal conveyor for coal mine transportation, comprising a base (1), a motor (2) arranged on the base (1), a rotating roller (8) driven by the motor (2), a conveying belt (3) wound on the rotating roller (8), a protective plate (5) arranged on both sides of the conveying belt (3), and a fixing assembly arranged on the base (1) for mounting the protective plate (5), characterized in that, Also includes: The limiting mechanism (4) is located at both ends of the rotating roller (8). The limiting mechanism (4) includes symmetrically arranged limiting rings (403) and a linkage mechanism for driving the limiting rings (403) to synchronously adjust the spacing. Protective pad (10), the protective pad (10) being fixed to the inner side of the protective plate (5) facing the conveyor belt (3); and The limiting component (9) is used to detachably lock the protective plate (5) onto the fixing component. The limiting component (9) includes a third sliding rod (906) that is telescopically inserted into the fixing component and cooperates with another part of the fixing component, and an actuation mechanism that is linked to the third sliding rod (906).

2. A safety coal conveyor for coal mine transportation according to claim 1, characterized in that: The limiting mechanism (4) further includes a cylinder (401), a first connecting block (402), a first slide rail (404), and a second connecting block (405); the linkage mechanism includes a first rotating block (406), a second rotating block (407), and a third rotating block (408); the cylinder (401) drives the first connecting block (402), and through the linkage of the first rotating block (406), the second rotating block (407), and the third rotating block (408), the second connecting block (405) sliding along the first slide rail (404) moves synchronously with the third rotating block (408) to drive the limiting rings (403) on both sides to move.

3. A safety coal conveyor for coal mine transportation according to claim 1, characterized in that: The actuation mechanism includes a sliding block (905), a first sliding rod (901), and a second sliding rod (903); the first sliding rod (901) is used to drive the second sliding rod (903) to move, the second sliding rod (903) cooperates with the sliding block (905) to cause the sliding block (905) to be displaced, and the sliding block (905) is connected to the third sliding rod (906).

4. A safety coal conveyor for coal mine transportation according to claim 3, characterized in that: The sliding block (905) is provided with a sloped groove, and the end of the second sliding rod (903) slides in the sloped groove to convert the movement of the second sliding rod (903) into the lateral displacement of the sliding block (905).

5. A safety coal conveyor for coal mine transportation according to claim 4, characterized in that: The actuation mechanism further includes a second slide rail (904), along which the sliding block (905) slides.

6. A safety coal conveyor for coal mine transportation according to claim 3, characterized in that: The actuation mechanism further includes a third fixed block (902), through which the first sliding rod (901) passes and the second sliding rod (903) is accommodated within the third fixed block (902).

7. A safety coal conveyor for coal mine transportation according to claim 1, characterized in that: The fixing component includes a first fixing block (6) and a second fixing block (7); the limiting component (9) also includes a spring (907) and a fixing plate (908); the third sliding rod (906) passes through the second fixing block (7) and is connected to the fixing plate (908), and its end is retractably inserted into the limiting hole of the first fixing block (6); the spring (907) is sleeved on the third sliding rod (906) and abuts against the second fixing block (7) and the fixing plate (908).

8. A safety coal conveyor for coal mine transportation according to claim 1, characterized in that: The bottom of the protective plate (5) is provided with a positioning rod, which is slidably inserted into the base (1).

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