A belt conveyor for coal mines

Abstract

The present application relates to the technical fields of mining equipment, especially to a coal mine belt conveyor, comprising an inclined support, a conveyor belt body and a drum body, both sides of the drum body are welded with a rotating shaft, the rotating shaft is rotationally connected with the surface of the inclined support, further comprising: a plurality of movable grooves opened on the surface of the drum body, the inner wall of the movable groove is slidably connected with a movable protrusion; the drum body rotates to drive the movable protrusion, the movable column and the roller to do circular motion, combined with the effects of the compression spring and the connecting block, when the roller contacts with the surface of the center cylinder, the movable protrusion extends to the outside of the movable groove, at the same time, when the movable protrusion approaches the cleaning component, the roller contacts with the recess, so that the movable protrusion shrinks into the inside of the movable groove, forming a smooth area on the surface of the drum body, which not only can ensure the friction between the conveyor belt body, but also is beneficial to the cleaning of the cleaning component, avoiding cleaning dead angle and residue.

Description

Technical Field

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

[0002] Belt conveyors for coal mines are crucial material transport equipment in coal mine production. Their working principle relies on the friction between the drive drum and the conveyor belt. The drive drum rotates under the power of a motor, and this friction drives the conveyor belt, transporting the material placed on it. It mainly consists of drums and a conveyor belt. The drums include drive drums and idler drums. The drive drum provides power, while the idler drums change the direction of the conveyor belt, which carries and transports the material. Its significant function is to enable continuous and efficient transport of materials such as coal from one location to another underground or on the surface, greatly improving transport efficiency and reducing labor intensity and transportation costs.

[0003] During operation, belt conveyors have anti-slip grooves or ridges on the surface of their rollers to increase friction. However, some coal slag, due to mechanical vibration and other factors, falls into the lower part of the conveyor belt and is drawn into the rollers. It adheres to the surface of the rollers, especially the drive rollers, where coal slag is most likely to adhere. The coal slag fills the gaps between the anti-slip ridges and is compacted by the conveyor belt, making the roller surface smooth and reducing the coefficient of friction. This can easily lead to slippage and even high temperatures caused by prolonged slippage and friction, posing a fire risk. Although some belt conveyors are equipped with cleaning components such as brushes to clean the rollers, the raised parts of the anti-slip ridges prevent the brushes from adhering to the surface, creating cleaning dead zones. In particular, the coal slag in the gaps between the anti-slip ridges is compacted by the conveyor belt, making it even more difficult to clean and leaving residue after cleaning. Summary of the Invention

[0004] The purpose of this invention is to provide a belt conveyor for coal mines, wherein the movable protrusion that plays an anti-slip role has a telescopic function, which not only ensures the friction between the conveyor belt, but also forms a nearly smooth area when it is close to the cleaning parts, so as to carry out cleaning and avoid the formation of cleaning dead corners.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a belt conveyor for coal mines, comprising an inclined support, a conveyor belt body, and a drum body, wherein rotating shafts are welded to both sides of the drum body, and the rotating shafts are rotatably connected to the surface of the inclined support, and further comprising:

[0006] Several movable grooves are formed on the surface of the roller body. Movable protrusions are slidably connected to the inner wall of the movable grooves. A sliding groove is also formed on the inner side of the roller body, and the sliding groove is connected to the movable grooves. A movable column is bolted to one side of the movable protrusion, and the movable column is slidably connected to the inner wall of the sliding groove.

[0007] Connecting blocks are welded to both sides of the movable column. Connecting plates are bolted to both sides of the inner wall of the slide groove. A compression spring is fixed to the surface of the connecting block, and the other end of the compression spring is fixed to the surface of the connecting plate. A roller is bolted to the other end of the movable column away from the movable protrusion.

[0008] A central cylinder is disposed inside the roller body, and a recess is provided on the surface of the central cylinder. Fixing frames are also bolted to both sides of the inclined support. A connecting rod is bolted to one side of the fixing frame, and the other end of the connecting rod passes through the rotating shaft and is bolted to the central cylinder. An auxiliary cleaning component is also provided on the surface of the inclined support.

[0009] Preferably, the auxiliary cleaning component includes a housing, a through hole, and cleaning brushes. The housing is bolted to the inclined support. The number of cleaning brushes is several groups, which are staggered and fixed to the surface of the housing. The through hole is opened on the surface of the housing and located around the cleaning brushes. The interior of the housing is hollow, and the through hole communicates with the interior of the housing. The auxiliary cleaning component also includes a connecting pipe, which communicates with the housing. The other end of the connecting pipe is connected to a long pipe, and the surface of the long pipe is connected to a connecting pipe.

[0010] Preferably, the surface of the box body near the roller body is arc-shaped and corresponds to the recess.

[0011] Preferably, a fixing rod is bolted to one side of the inclined support, and a fixing sleeve is welded to one end of the fixing rod, and the fixing sleeve is fitted onto the surface of the long pipe.

[0012] Preferably, there is a gap between the central cylinder and the inner wall of the roller body.

[0013] Preferably, a support frame is also bolted to one side of the inclined bracket, and a drive motor is bolted to the top of the support frame. The output shaft of the drive motor is connected to one of the sets of rotating shafts via gear transmission.

[0014] Preferably, the depth of the inner wall of the chute is greater than the depth of the inner wall of the movable groove, and the inner wall of the chute is designed in a cross shape.

[0015] Preferably, the rotating shaft is hollow, and the connecting rod and the inner wall of the rotating shaft are fixed to each other by bearings.

[0016] Preferably, the surface of the movable protrusion on the side away from the movable column is designed in an arc shape.

[0017] Preferably, the distance between the outer surface of the recess and the center is less than the distance between the other surfaces of the central cylinder and the center.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. This invention uses the rotation of the roller body to drive the movable protrusion, movable column, and roller to perform circumferential motion. Combined with the action of the compression spring and connecting block, when the roller contacts the surface of the central cylinder, the movable protrusion extends to the outside of the movable groove. At the same time, when the movable protrusion approaches the cleaning component, the roller contacts the recessed part, causing the movable protrusion to retract into the interior of the movable groove, forming a nearly smooth area on the surface of the roller body. This not only ensures the friction between the roller and the conveyor belt body, but also facilitates cleaning by the cleaning component, avoiding cleaning dead corners and residues.

[0020] 2. The present invention uses the rotation of the roller body itself to drive the movable protrusion, movable column and roller to make circumferential motion together. Combined with the cooperation of the central cylinder and the recessed part, the extension and retraction of the movable protrusion is automatically controlled without additional power, and there is no need for some electrical components to control the timing of the extension or retraction of the movable protrusion. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure in this invention;

[0022] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A;

[0023] Figure 3 This is a schematic diagram of the structure from another perspective in this invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point B;

[0025] Figure 5 This is a partial structural diagram of the auxiliary cleaning component in this invention;

[0026] Figure 6 This is a schematic diagram of the structure of the roller body and its surface in this invention;

[0027] Figure 7 This is a schematic diagram of the structure of the central cylinder in this invention;

[0028] Figure 8 This is a side cross-sectional view of the roller body in this invention;

[0029] Figure 9 This is a cross-sectional view of the roller body in this invention;

[0030] Figure 10 For the present invention Figure 9 Enlarged structural diagram at point C;

[0031] Figure 11 This is a schematic diagram showing the distribution of movable grooves on the surface of the roller body in this invention;

[0032] Figure 12 This is a schematic diagram of the structure of the movable protrusion and its surrounding area in this invention;

[0033] Figure 13 This is a schematic diagram of the structure of the box and its surface in this invention;

[0034] Figure 14 For the present invention Figure 13 Enlarged structural diagram at point D;

[0035] Figure 15 This is a cross-sectional view of the box body in this invention.

[0036] In the diagram: 1. Inclined support; 2. Conveyor belt body; 3. Roller body; 4. Movable protrusion; 5. Movable groove; 6. Slide groove; 7. Movable column; 8. Roller; 9. Connecting block; 10. Compression spring; 11. Connecting plate; 12. Central cylinder; 13. Recess; 14. Connecting rod; 15. Rotating shaft; 16. Fixing frame; 17. Drive motor; 18. Support frame; 19. Auxiliary cleaning components; 191. Box; 192. Through hole; 193. Cleaning brush; 194. Connecting pipe; 195. Long pipe; 196. Connecting pipe; 20. Fixing rod; 21. Fixing sleeve. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-15A belt conveyor for coal mines includes an inclined support 1, a conveyor belt body 2, and a roller body 3. Rotary shafts 15 are welded to both sides of the roller body 3, and the shafts 15 are hollow. The shafts 15 are rotatably connected to the surface of the inclined support 1, allowing the roller body 3 to rotate. There are two roller bodies 3, one as the driving roller and the other as the driven roller. Several movable grooves 5 are formed on the surface of the roller body 3, arranged in a circular array. Movable protrusions 4 are slidably connected to the inner walls of the movable grooves 5. The interior of the roller body 3 is hollow, and a sliding groove 6 is formed on the inner side of the roller body 3, communicating with the movable grooves 5. The depth of the inner wall of the sliding groove 6 is greater than the depth of the inner wall of the movable groove 5 to prevent the movable protrusions 4 from entering the interior of the sliding groove 6. The inner wall of the sliding groove 6 is cross-shaped. A movable column 7 is bolted to one side of the movable protrusion 4, and the movable column 7 is slidably connected to the inner wall of the sliding groove 6. Connecting blocks are welded to both sides of the movable column 7. 9. Connecting plates 11 are bolted to both sides of the inner wall of the slide 6. A compression spring 10 is fixed to the surface of the connecting block 9, and the other end of the compression spring 10 is fixed to the surface of the connecting plate 11. A roller 8 is bolted to the other end of the movable column 7 away from the movable protrusion 4. A central cylinder 12 is provided on the inner side of the roller body 3. A recess 13 is provided on the surface of the central cylinder 12. The distance between the outer surface of the recess 13 and the center is less than the distance between the other surfaces of the central cylinder 12 and the center. Fixing brackets 16 are also bolted to both sides of the inclined support 1. A connecting rod 14 is bolted to one side of the surface of the fixing bracket 16. The other end of the connecting rod 14 passes through the rotating shaft 15 and is bolted to the central cylinder 12. The central cylinder 12 is made of stainless steel and has a hollow design inside to reduce the overall weight. Under the action of the connecting rod 14 and the fixing bracket 16, the central cylinder 12 is suspended inside the roller body 3. There is a gap between the central cylinder 12 and the inner wall of the roller body 3. An auxiliary cleaning component 19 is also provided on the surface of the inclined support 1.

[0039] The auxiliary cleaning component 19 includes a housing 191, a through hole 192, and cleaning brushes 193. The housing 191 is bolted to the inclined support 1. The surface of the housing 191 near the roller body 3 is arc-shaped and corresponds to the recess 13. The cleaning brushes 193 are arranged in several groups and are fixed to the surface of the housing 191 in an alternating manner. The through hole 192 is opened on the surface of the housing 191 and is located around the cleaning brushes 193. The interior of the housing 191 is hollow, and the through hole 192 communicates with the interior of the housing 191. The auxiliary cleaning component 19 also includes a connecting pipe 194, which communicates with the housing 191. The other end of the connecting pipe 194 is connected to a... A long pipe 195 is provided, and a connecting pipe 196 is provided on the surface of the long pipe 195. The external connection of the connecting pipe 196 is a DMC type bag dust collector (not shown in the figure, this dust collector is existing technology). The DMC type bag dust collector uses a fan to draw in dust-laden gas, which is filtered by the filter bag. The dust is trapped and the purified gas is discharged by the fan. The fan provides the gas flow power to ensure continuous filtration and dust removal of the dust collector. A fixing rod 20 is also bolted to one side of the inclined support 1. A fixing sleeve 21 is welded to one end of the fixing rod 20 and is fitted onto the surface of the long pipe 195 to support the long pipe 195 and increase the stability of the long pipe 195.

[0040] A support frame 18 is also bolted to one side of the inclined bracket 1, and a drive motor 17 is bolted to the top of the support frame 18. The output shaft of the drive motor 17 is connected to one of the sets of rotating shafts 15 through gear transmission.

[0041] Since the central cylinder 12 is suspended inside the drum body 3, the connecting rod 14 and the inner wall of the rotating shaft 15 are fixed to each other by bearings, which increases the fulcrum of the connecting rod 14, making the connecting rod 14 less prone to bending, and ensuring that the rotating shaft 15 will not be obstructed by the connecting rod 14 during rotation.

[0042] The compression spring 10 applies a force to the connecting block 9 and the movable column 7 towards the central cylinder 12, causing the rollers 8 to adhere to the surface of the central cylinder 12. At this time, the movable protrusions 4 corresponding to these rollers 8 extend to the outside of the movable groove 5, forming protrusions on the surface of the roller body 3 to increase the friction with the surface of the conveyor belt body 2. Some rollers 8 contact the recess 13, at which point the movable protrusions 4 corresponding to these rollers 8 retract into the interior of the movable groove 5 (e.g., Figure 6 As shown, a nearly smooth area is formed on the surface of the roller body 3.

[0043] During the operation of the conveyor, the drive motor 17 is turned on, which drives the rotating shaft 15 and one set of roller bodies 3 to rotate through gears. The roller body 3 on this side acts as the drive roller, thereby driving the conveyor belt body 2 to run. The roller body 3 on the other side follows the rotation. The conveyor belt body 2 transports coal. During the transportation process, some coal slag falls on the top of the lower part of the conveyor belt body 2 and is rolled in and attached to the surface of the roller body 3. At this time, during the rotation of the roller body 3 (whether clockwise or counterclockwise), it can drive the movable groove 5 and the sliding groove 6 on the surface to move together, thereby driving the movable protrusion 4, the movable column 7 and the roller 8 to perform circumferential motion. The roller 8 can move along the surface of the central cylinder 12 and the recess 13. The recess 13 on the surface of the central cylinder 12 is located in the area close to the housing 191, and the housing 191 is bolted to the surface of the inclined support 1, away from the area where the conveyor belt body 2 wraps around the surface of the roller body 3. At this time, in the part of the conveyor belt body 2 wrapping around the surface of the roller body 3, the movable protrusion 4 is located outside the movable groove 5, which increases the interaction with the conveyor belt body. 2. The surface friction prevents slippage. The roller body 3 drives the movable protrusion 4 to continue its operation. When it approaches the housing 191, the roller 8 also enters the recess 13. At this time, the corresponding movable protrusion 4 enters the interior of the movable groove 5. The surface of the movable protrusion 4 away from the movable column 7 is arc-shaped. The movable protrusion 4 and the surface of the roller body 3 together form a nearly smooth area. Moreover, as the roller body 3 continues to rotate, this smooth area is dynamic. The movable protrusion 4 near the housing 191 retracts, while the movable protrusion 4 away from the housing 191... When the brush 193 extends again, it can effectively clean the smooth area, avoid residue, and at the same time ensure the friction between the brush and the conveyor belt body 2 to prevent slippage. When the external DMC bag dust collector is opened through the connecting pipe 196, the coal slag cleaned by the brush 193 is sucked into the through hole 192. After passing through the through hole 192, the connecting pipe 194, the long pipe 195 and the connecting pipe 196, it enters the interior of the DMC bag dust collector for cleaning. The coal slag in the smooth area can also fall off by itself and be sucked away.

[0044] In the above process, the rotation of the roller body 3 drives the movable protrusion 4, the movable column 7, and the roller 8 to perform a circular motion. The central cylinder 12, which is supported by the connecting rod 14 and the fixed frame 16, cannot rotate. In this way, as the roller 8 moves around the surface of the central cylinder 12 and the recess 13, it can automatically control the extension and retraction of the movable protrusion 4 without the need for additional power to control the movable protrusion 4. At the same time, it does not require electrical components (such as PLC or intelligent controller) to control the timing of the extension or retraction of the movable protrusion 4. Therefore, it can not only adapt to the conveyor belt running together and ensure friction, but also become smooth when it is close to the auxiliary cleaning component 19 to avoid cleaning residue.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

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

Claims

1. A belt conveyor for coal mines, comprising an inclined support (1), a conveyor belt body (2), and a roller body (3), wherein rotating shafts (15) are welded to both sides of the roller body (3), and the rotating shafts (15) are rotatably connected to the surface of the inclined support (1), characterized in that, Also includes: Several movable grooves (5) are opened on the surface of the roller body (3). The inner wall of the movable groove (5) is slidably connected with a movable protrusion (4). The inner side of the roller body (3) is also provided with a sliding groove (6), and the sliding groove (6) is connected to the movable groove (5). A movable column (7) is bolted to one side of the movable protrusion (4), and the movable column (7) is slidably connected to the inner wall of the sliding groove (6). Connecting blocks (9) are welded to both sides of the movable column (7). Connecting plates (11) are bolted to both sides of the inner wall of the slide (6). A compression spring (10) is fixed to the surface of the connecting block (9), and the other end of the compression spring (10) is fixed to the surface of the connecting plate (11). A roller (8) is bolted to the other end of the movable column (7) away from the movable protrusion (4). The central cylinder (12) is located inside the roller body (3). The surface of the central cylinder (12) is provided with a recess (13). Both sides of the inclined support (1) are also bolted with a fixing frame (16). A connecting rod (14) is bolted to one side of the fixing frame (16). The other end of the connecting rod (14) passes through the rotating shaft (15) and is bolted to the central cylinder (12). The surface of the inclined support (1) is also provided with an auxiliary cleaning component (19).

2. The belt conveyor for coal mines according to claim 1, characterized in that: The auxiliary cleaning component (19) includes a housing (191), a through hole (192), and a cleaning brush (193). The housing (191) is bolted to the inclined bracket (1). The number of cleaning brushes (193) is several groups, which are staggered and fixed on the surface of the housing (191). The through hole (192) is opened on the surface of the housing (191) and located around the cleaning brush (193). The interior of the housing (191) is hollow, and the through hole (192) is connected to the interior of the housing (191). The auxiliary cleaning component (19) also includes a connecting pipe (194). The connecting pipe (194) is connected to the housing (191). The other end of the connecting pipe (194) is connected to a long pipe (195). The surface of the long pipe (195) is connected to a connecting pipe (196).

3. A belt conveyor for coal mines according to claim 2, characterized in that: The surface of the box (191) near the roller body (3) is arc-shaped and corresponds to the recess (13).

4. A belt conveyor for coal mines according to claim 2, characterized in that: A fixing rod (20) is also bolted to one side of the inclined support (1). A fixing sleeve (21) is welded to one end of the fixing rod (20), and the fixing sleeve (21) is fitted onto the surface of the long pipe (195).

5. A belt conveyor for coal mines according to claim 1, characterized in that: There is a gap between the central cylinder (12) and the inner wall of the drum body (3).

6. A belt conveyor for coal mines according to claim 1, characterized in that: A support frame (18) is also bolted to one side of the inclined bracket (1), and a drive motor (17) is bolted to the top of the support frame (18). The output shaft of the drive motor (17) is connected to one of the sets of rotating shafts (15) through gear transmission.

7. A belt conveyor for coal mines according to claim 1, characterized in that: The depth of the inner wall of the chute (6) is greater than the depth of the inner wall of the movable groove (5), and the inner wall of the chute (6) is designed in a cross shape.

8. A belt conveyor for coal mines according to claim 1, characterized in that: The shaft (15) is hollow, and the connecting rod (14) and the inner wall of the shaft (15) are fixed to each other by bearings.

9. A belt conveyor for coal mines according to claim 1, characterized in that: The surface of the active protrusion (4) on the side away from the active column (7) is designed in an arc shape.

10. A belt conveyor for coal mines according to claim 1, characterized in that: The distance between the outer surface of the recess (13) and the center is less than the distance between the other surfaces of the central cylinder (12) and the center.

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