Belt conveyor for coal mine

Abstract

A belt conveyor for a coal mine belongs to the technical field of belt conveyors and comprises a rack and a belt arranged on the rack, a tensioning mechanism, a guide mechanism and a driving mechanism are arranged in the middle area of the rack, and the tensioning mechanism, the guide mechanism and the driving mechanism are sequentially arranged in the length direction of the belt conveyor. The belt of the return section sequentially bypasses the driving mechanism, the tensioning mechanism and the guiding mechanism, the driving mechanism is of a double-roller structure, standby application of driving rollers is achieved, driving power is increased, the conveying capacity and the conveying reliability are improved, the driving mechanism, the guiding mechanism and the tensioning mechanism are all arranged in the middle area of the conveyor, and the conveying efficiency is improved. Installation of a driving device, a tensioning device and a belt storage device at the machine head and the machine tail is omitted, the requirement for the installation space is low, the device is more suitable for short-distance conveying, the length of the machine tail is obviously reduced, and lap joint transshipment of the on-site belt conveyor is better facilitated.

Description

Technical Field

[0001] This invention relates to the field of belt conveyor technology, and in particular to a belt conveyor for coal mines. Background Technology

[0002] A belt conveyor is a continuous mechanical conveying device that uses a conveyor belt as the traction and load-bearing component. It is widely used in mining, metallurgy, coal and other fields to transport loose materials or packaged goods, and can meet the requirements of long-distance horizontal transportation and continuous transportation at large angles.

[0003] Existing belt conveyors are head-driven (such as publication number CN221955151U). A drive roller and a tensioning mechanism are installed at the head of the conveyor. The roller drives the belt, and the tensioning mechanism adjusts the belt tension to prevent the belt from slipping or deviating.

[0004] The aforementioned head-driven belt conveyor is suitable for long-distance transportation. However, when the belt conveyor is used for short distances, due to limitations in transportation distance and space, it is impossible to install a belt storage device and a tensioning device at the head. The only option is to use a head-driven, tail-tensioning method. This method of installation does not allow the use of a triangular drive unit, which restricts the installation of the drive roller. Only one drive roller can be installed, and it must be replaced immediately when damaged, affecting work efficiency. Furthermore, the increased tail length affects the overlapping and transfer of belt conveyors on site. Summary of the Invention

[0005] To address the technical problems of existing belt conveyors mentioned above, which, when transporting short distances, can only be installed using a head-driven, tail-tensioned method, and cannot utilize multiple drive rollers, resulting in poor emergency response capabilities and hindering on-site overlapping and transfer, this invention provides a belt conveyor for coal mines.

[0006] The technical solution of this invention is as follows: This invention provides a belt conveyor for coal mines, including a frame and a belt mounted on the frame. A tensioning mechanism, a guiding mechanism, and a driving mechanism are located in the middle area of ​​the frame. These mechanisms are sequentially arranged along the length of the belt conveyor. The belt on the return section passes around the driving mechanism, tensioning mechanism, and guiding mechanism in sequence. The driving mechanism is a double-roller structure, which allows for backup of the driving rollers, increases driving power, and improves transport capacity and reliability. Since the driving mechanism, guiding mechanism, and tensioning mechanism are all located in the middle area of ​​the conveyor, the installation of driving devices, tensioning devices, and belt storage devices at the head and tail of the conveyor is eliminated. This reduces installation space requirements, making it more suitable for short-distance transport. Furthermore, the significantly reduced tail length facilitates on-site overlapping and transfer of belt conveyors.

[0007] Preferably, the drive mechanism includes a drive frame, which is a triangular support. Two independently driven drive rollers are rotatably mounted on the drive frame. The belt passes around the two drive rollers in sequence, which realizes the backup of the drive rollers, reduces downtime caused by the failure of a single drive roller, and ensures work efficiency. At the same time, the sequential passing of the belt can increase the contact area with the rollers and reduce the risk of slippage.

[0008] Preferably, the tensioning mechanism includes a tensioning base frame, which is fixedly mounted on the machine frame. A tensioning slide is slidably mounted on the tensioning base frame, and the position of the tensioning slide on the tensioning base frame is adjustable. A tensioning roller is rotatably mounted on the tensioning slide, and the belt passes over the tensioning roller. By adjusting the position of the tensioning slide on the tensioning base frame, the position of the tensioning roller can be flexibly adjusted, thereby adjusting the tension of the belt, effectively preventing belt slippage and skew, and ensuring the stability of belt operation.

[0009] Preferably, a tensioning wheel is rotatably provided on the side of the tensioning base away from the guide mechanism. The tensioning wheel is connected to a drive unit. The tensioning slide is connected to the tensioning wheel via a steel wire rope. The drive unit drives the tensioning wheel to rotate, and the tensioning slide is pulled by the steel wire rope, realizing convenient adjustment of the position of the tensioning slide. The operation is labor-saving and efficient, and can quickly respond to the tensioning needs of the belt.

[0010] Preferably, the tensioning wheels are arranged vertically, and there are two tensioning wheels. The two tensioning wheels are arranged opposite each other along the length of the tensioning base. The two opposite tensioning wheels can make the tension of the wire rope more balanced, prevent the tensioning slide from shifting when it moves, and ensure the stability of tension adjustment.

[0011] Preferably, limiting protrusions are fixedly provided on the inner walls of both sides of the tensioning base, and sliding grooves that cooperate with the limiting protrusions are provided on both sides of the tensioning slide. The cooperation between the limiting protrusions and the sliding grooves can guide and limit the movement of the tensioning slide, prevent the tensioning slide from shaking or deviating during the sliding process, and ensure the stability and accuracy of the adjustment process.

[0012] Preferably, the two ends of the frame are equipped with rotatable guide rollers. The belt passes around the guide rollers, which can guide the belt to change its running direction, so that the belt forms a closed loop path, ensuring that the belt can smoothly complete the process of carrying materials and returning, and improving the smoothness of the conveyor operation.

[0013] Preferably, the guiding mechanism includes a fixed frame, which is fixedly installed on the machine frame. A guide roller is rotatably mounted on the fixed frame. The guide roller is used to guide the belt and works in conjunction with the tensioning mechanism to realize belt tension adjustment and improve the convenience of adjustment.

[0014] Preferably, at least one guide roller is provided to ensure the effectiveness of belt guidance.

[0015] Preferably, the drive roller is any one of a steel smooth roller, a rubber-coated roller, or a ceramic roller. The appropriate roller type can be selected according to the characteristics of different transported materials and the requirements of the working environment, thereby improving the applicability and service life of the equipment.

[0016] As can be seen from the above technical solutions, the advantages of the present invention are: 1. The drive mechanism is a double-drum structure, which realizes the backup of the drive drum and increases the drive power, improving the transportation capacity and transportation reliability. The drive mechanism, guide mechanism and tensioning mechanism are all located in the middle area of ​​the conveyor, eliminating the installation of drive devices, tensioning devices and belt storage devices at the head and tail of the machine. The installation space requirements are low, making it more suitable for short-distance conveying. The tail length is also significantly reduced, which is more conducive to the overlapping and transfer of belt conveyors on site.

[0017] 2. A tensioning wheel is rotatably installed on the side of the tensioning base away from the guide mechanism. The tensioning slide is connected to the tensioning wheel via a steel wire rope. By pulling the tensioning slide with the steel wire rope, the position of the tensioning slide can be easily adjusted. The operation is labor-saving and efficient, and it can quickly respond to the tensioning requirements of the belt. The two tensioning wheels set opposite each other can make the tension of the steel wire rope more balanced, prevent the tensioning slide from shifting when moving, and ensure the stability of tension adjustment. Attached Figure Description

[0018] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a belt conveyor for coal mines according to one or more embodiments of the present invention; Figure 2 This is a partially enlarged structural schematic diagram of a belt conveyor for coal mines according to one or more embodiments of the present invention; Figure 3 This is a top view of the tensioning base frame according to one or more embodiments of the present invention; Figure 4 This is a partial structural schematic diagram of the tensioning carriage according to one or more embodiments of the present invention; The components represented by the various reference numerals in the diagram are: 1. Frame; 2. Belt; 3. Tensioning mechanism; 4. Guiding mechanism; 5. Drive mechanism; 6. Tensioning base frame; 7. Tensioning slide; 8. Tensioning roller; 9. Tensioning wheel; 10. Fixing frame; 11. Guide roller; 12. Drive frame; 13. Drive roller; 14. Steering roller; 15. Limiting protrusion; 16. Slide groove; 17. Drive unit. Detailed Implementation

[0020] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0021] Example 1 In a typical embodiment of the present invention, such as Figures 1-4 As shown, a belt conveyor for coal mines is proposed, including: a frame 1, a belt 2, a tensioning mechanism 3, a guiding mechanism 4, and a drive mechanism 5. The belt 2 is mounted on the frame 1, and a steering roller 14 is rotatably mounted at both ends of the frame 1 (i.e., the head and tail of the conveyor). The belt 2 passes around the steering roller 14 to achieve the steering of the belt 2 on the frame 1. The tensioning mechanism 3, the guiding mechanism 4, and the drive mechanism 5 are all installed in the middle area of ​​the frame 1, and the tensioning mechanism 3, the guiding mechanism 4, and the drive mechanism 5 are arranged sequentially along the length of the belt conveyor. The belt 2 of the return section passes around the drive mechanism 5, the tensioning mechanism 3, and the guiding mechanism 4 in sequence.

[0022] In this embodiment, the drive mechanism 5 is a double-roller structure, which realizes the backup of the drive roller 13 and increases the drive power, thereby improving the transportation capacity and transportation reliability. The drive mechanism 5, the guide mechanism 4 and the tensioning mechanism 3 are all located in the middle area of ​​the conveyor, eliminating the installation of drive devices, tensioning devices and belt storage devices at the head and tail of the machine. The installation space requirements are low, making it more suitable for short-distance transportation. The tail length is also significantly reduced, which is more conducive to the overlapping and transfer of belt conveyors on site.

[0023] Specifically, such as Figure 2 As shown, the drive mechanism 5 includes a drive frame 12 and a drive roller 13. The drive frame 12 is a triangular support. There are two drive rollers 13, both of which are rotatably mounted on the drive frame 12. The two drive rollers 13 are arranged sequentially along the length of the belt conveyor. The return section belt 2 passes around the two drive rollers 13 in sequence. The belt 2 is driven by the two drive rollers 13. It has strong emergency response capability. When one drive roller 13 is damaged or fails, the other drive roller 13 can continue to drive the belt 2, which has high reliability.

[0024] The drive roller 13 can be any one of a steel smooth roller, a rubber-coated roller, and a ceramic roller. The two drive rollers 13 are driven independently. In this embodiment, each drive roller 13 is connected to a drive motor. In other embodiments, a permanent magnet roller with a built-in motor can also be used. The specific choice can be made according to actual needs, as long as the independent control of the two drive rollers 13 can be achieved. No further restrictions are imposed here.

[0025] The guide mechanism 4 is located between the drive mechanism 5 and the tensioning mechanism 3. The guide mechanism 4 includes a fixed frame 10 and a guide roller 11. The fixed frame 10 is fixedly installed on the frame 1, and the guide roller 11 is rotatably mounted on the fixed frame 10. The guide roller 11 is used to guide the belt 2 and works in conjunction with the tensioning mechanism 3 to realize the tension adjustment of the belt 2.

[0026] It is understandable that the number of guide rollers 11 can be set to one or more, and the specific selection can be made according to the actual design requirements. No further restrictions are imposed here.

[0027] The tensioning mechanism 3 is located on the side of the guide mechanism 4 away from the drive mechanism 5. The tensioning mechanism 3 includes a tensioning base frame 6, a tensioning slide 7, a tensioning roller 8, and a tensioning wheel 9. Figure 3 and Figure 4 As shown, the tensioning base frame 6 is welded from several steel pieces. The tensioning base frame 6 is fixedly installed on the frame 1 by bolts. Two tensioning wheels 9 are rotatably mounted on the tensioning base frame 6. Both tensioning wheels 9 are vertically arranged and are arranged opposite each other along the length of the tensioning base frame 9. Each tensioning wheel 9 is connected to a corresponding drive unit 17. The tensioning wheel 9 is used for winding the steel wire.

[0028] The tensioning slide 7 is slidably mounted on the tensioning base 6. Limiting protrusions 15 are fixedly provided on the inner walls of both sides of the tensioning base 6. The limiting protrusions 15 are arranged along the length direction of the tensioning base 6. The tensioning slide 7 is provided with sliding grooves 16 on both sides. The sliding grooves 16 extend along the length direction of the tensioning slide 7. The limiting protrusions 15 are inserted into the sliding grooves 16 to play a sliding guide role. The tensioning slide 7 is connected to the tensioning wheel 9 through a wire rope. The tensioning roller 8 is rotatably mounted on the tensioning slide 7.

[0029] The tension wheel 9 is located on the side of the tensioning slide 7 away from the guide mechanism 4. The tension wheel 9 can pull the tensioning slide 7 toward the side away from the guide mechanism 4 by the wire rope, thereby increasing the tension on the belt 2 and realizing the tension adjustment of the belt 2.

[0030] In this embodiment, the drive unit 17 is a worm gear drive structure. The motor drives the tension wheel 9 to rotate around the axis through the worm gear. In other embodiments, the motor can also be connected to the tension wheel 9 through a coupling, reducer, etc. The specific choice can be made according to the actual design requirements, as long as the drive of the tension wheel 9 can be achieved. No further restrictions are imposed here.

[0031] The return section of belt 2 passes through tensioning mechanism 3 and guide mechanism 4 in sequence before returning to frame 1. Since the position of guide mechanism 4 is fixed, the tension of belt 2 can be adjusted simply by retracting / releasing the wire rope so that tensioning slide 7 moves away from / closes to guide mechanism 4. The adjustment method is simple and easy to operate. In addition, the overall structure of tensioning mechanism 3 is simple, with a low failure rate and easy maintenance.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A belt conveyor for coal mines, comprising: The frame (1) and the belt (2) set on the frame (1) are characterized in that the middle area of ​​the frame (1) is provided with a tensioning mechanism (3), a guiding mechanism (4) and a driving mechanism (5), the tensioning mechanism (3), the guiding mechanism (4) and the driving mechanism (5) are arranged in sequence along the length direction of the belt conveyor, and the belt (2) of the return section passes around the driving mechanism (5), the tensioning mechanism (3) and the guiding mechanism (4) in sequence, and the driving mechanism (5) is a double roller structure.

2. The belt conveyor for coal mines according to claim 1, characterized in that, The drive mechanism (5) includes a drive frame (12), which is a triangular support. Two independently driven drive rollers (13) are rotatably mounted on the drive frame (12), and the belt (2) passes around the two drive rollers (13) in sequence.

3. The belt conveyor for coal mines according to claim 1, characterized in that, The tensioning mechanism (3) includes a tensioning base frame (6), which is fixedly installed on the frame (1). A tensioning slide (7) is slidably provided on the tensioning base frame (6). The tensioning slide (7) can be adjusted to its position on the tensioning base frame (6). A tensioning roller (8) is rotatably provided on the tensioning slide (7), and the belt (2) passes over the tensioning roller (8).

4. The belt conveyor for coal mines according to claim 3, characterized in that, The tensioning base (6) is provided with a tensioning wheel (9) on the side away from the guide mechanism (4). The tensioning wheel (9) is connected to the drive unit (17). The tensioning slide (7) is connected to the tensioning wheel (9) by a steel wire rope.

5. The belt conveyor for coal mines according to claim 4, characterized in that, The tensioning wheel (9) is set vertically. There are two tensioning wheels (9), which are set opposite each other along the length of the tensioning base frame (6).

6. The belt conveyor for coal mines according to claim 3, characterized in that, Limiting protrusions (15) are fixed on the inner walls of both sides of the tensioning base (6), and sliding grooves (16) that cooperate with the limiting protrusions (15) are provided on both sides of the tensioning slide (7).

7. The belt conveyor for coal mines according to claim 1, characterized in that, The frame (1) has rotating guide rollers (14) at both ends, and the belt (2) passes over the guide rollers (14).

8. The belt conveyor for coal mines according to claim 1, characterized in that, The guiding mechanism (4) includes a fixed frame (10), which is fixedly installed on the frame (1), and a guide roller (11) is rotatably mounted on the fixed frame (10).

9. The belt conveyor for coal mines according to claim 8, characterized in that, There is at least one guide roller (11).

10. The belt conveyor for coal mines according to claim 2, characterized in that, The drive roller (13) can be any one of a steel smooth roller, a rubber-coated roller, or a ceramic roller.

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