A coal mine underground transportation system

Abstract

The present invention provides an underground coal mine transportation system, which relates to the technical field of underground coal mine transportation; the system comprises a first conveying device; the first conveying device comprises a first conveying roller, a second conveying roller and a first conveyor belt, the first conveyor belt being sleeved on the first conveying roller and the second conveying roller to form a first upper belt body and a first lower belt body with opposite transport directions; wherein, along the transport direction of the first lower belt body, the first conveying device comprises a first conveying part and a second conveying part, and the horizontal height of the first conveying part is greater than the horizontal height of the second conveying part. The present invention can transport coal in a first direction through the first upper belt body and transport gangue in an opposite second direction through the first lower belt body, and can connect or transfer materials between the first conveying part and the second conveying part. The synchronous transportation of coal and gangue can be achieved through a set of transportation devices, without the need to configure two sets of transportation systems, thereby reducing the occupation of underground space and the cost required for transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of underground coal mine transportation, and in particular to an underground coal mine transportation system. Background Art

[0002] At present, in the process of coal mining, belt conveyors are mainly used to transport underground coal from the coal mining face. During the mining process, gangue needs to be filled in. During the gangue filling operation, the gangue needs to be transported to the goaf behind the working face.

[0003] The existing method of transporting coal and gangue is generally to set up two conveying systems underground, and then transport coal and gangue separately. This not only takes up underground space and affects underground operation efficiency, but also greatly increases production costs. Summary of the Invention

[0004] The purpose of the present invention is to provide an underground coal mine transportation system to solve the problems of large space occupation, low operating efficiency and high production cost caused by the existing separate transportation of coal and gangue.

[0005] To solve the above problems, the present invention provides a coal mine underground transportation system, including a first conveying device; the first conveying device includes a first conveying roller, a second conveying roller and a first conveyor belt, the first conveyor belt is mounted on the first conveying roller and the second conveying roller, and forms a first upper belt body and a first lower belt body with opposite conveying directions; wherein, along the conveying direction of the first lower belt body, the first lower belt body includes a first conveying part and a second conveying part, and the horizontal height of the first conveying part is greater than the horizontal height of the second conveying part.

[0006] Furthermore, the first conveying device includes a first tensioning mechanism, which tensions the first lower belt body so that the first lower belt body forms the first conveying portion and the second conveying portion.

[0007] Furthermore, the first tensioning mechanism includes a first tensioning roller and a second tensioning roller, the first tensioning roller is located above the second tensioning roller, the first tensioning roller is tensioned on the lower surface of the first lower belt body, and the second tensioning roller is tensioned on the upper surface of the first lower belt body.

[0008] Furthermore, the length of the first conveying portion is greater than the length of the second conveying portion.

[0009] Furthermore, it also includes a transfer device and a second conveying device; the transfer device is configured to receive the incoming materials from the first conveying part and convey the received incoming materials outward; the second conveying device is used to receive and convey the incoming materials from the transfer device.

[0010] Furthermore, the transfer device includes a material receiving mechanism, a transfer mechanism and a discharging mechanism connected in sequence; the material receiving mechanism is located between the first conveying part and the second conveying part, and is used to receive materials from the first conveying part; the transfer mechanism is used to receive incoming materials from the material receiving mechanism and transport the materials to the discharging mechanism; the discharging mechanism is used to transport materials to the second conveying device.

[0011] Further, when a first tensioning roller and a second tensioning roller are included, the first tensioning roller is at least partially located above the material receiving mechanism, and the second tensioning roller has a preset interval with the material receiving mechanism.

[0012] Furthermore, the material receiving mechanism includes a first bottom wall and a first side wall connected to the first bottom wall, the angle between the first bottom wall and the horizontal plane is greater than the natural angle of repose of the material therein, and the first side wall is provided with a first discharge port for the material to flow out; and / or, the discharging mechanism includes a second bottom wall and a second side wall connected to the second bottom wall, the angle between the second bottom wall and the horizontal plane is greater than the natural angle of repose of the material therein, and the second side wall is provided with a second discharge port for the material to flow out.

[0013] Furthermore, the second conveying device includes a third conveying roller, a fourth conveying roller and a second conveyor belt, and the second conveyor belt is mounted on the third conveying roller and the fourth conveying roller to form a second upper belt body and a second lower belt body with opposite transport directions; wherein, along the conveying direction of the second lower belt body, the second lower belt body includes a third conveying part and a fourth conveying part, and the horizontal height of the third conveying part is greater than the horizontal height of the fourth conveying part.

[0014] Furthermore, the second conveying device includes a second tensioning mechanism, which tensions the second lower belt body and forms the third conveying portion and the fourth conveying portion with a height difference between the second lower belt body.

[0015] According to the coal mine underground transportation system provided by the present invention, the coal mined from the working face can be transported out in a first direction through the first upper belt body, and the gangue can be transported in an opposite second direction to the goaf behind the working face through the first lower belt body. In addition, material connection or material transfer can be carried out between the first conveying part and the second conveying part. The synchronous transportation of coal and gangue can be achieved through a set of transportation equipment, without the need to configure two sets of transportation systems, thereby reducing the occupation of underground space and the cost required for transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of a coal mine underground transportation system provided by an embodiment of the present invention;

[0018] Figure 2 A schematic structural diagram of a first receiving chute of an underground coal mine transportation system according to an embodiment of the present invention;

[0019] Figure 3 A schematic structural diagram of a second material receiving chute of a coal mine underground transportation system provided in an embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 100 - first conveying device; 110 - first conveying roller; 120 - second conveying roller; 130 - first conveyor belt; 131 - first upper belt body; 132 - first lower belt body; 1321 - first conveying section; 1322 - second conveying section; 140 - first tensioning mechanism; 141 - first tensioning roller; 142 - second tensioning roller;

[0022] 200-transfer device; 210-material receiving mechanism; 211-first bottom wall; 212-first side wall; 213-first discharge port; 220-transfer mechanism; 230-discharge mechanism; 231-second bottom wall; 232-second side wall; 233-second discharge port;

[0023] 300-second conveying device; 310-third conveying roller; 320-fourth conveying roller; 330-second conveyor belt; 331-second upper belt body; 332-second lower belt body; 3321-third conveying part; 3322-fourth conveying part; 340-second tensioning mechanism; 341-third tensioning roller; 342-fourth tensioning roller. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Since the coal mined from the existing working face and the gangue used to fill the working face are transported separately, two sets of transportation systems need to be configured accordingly. This not only takes up space in the underground tunnels and affects the efficiency of underground operations, but the two transportation systems undoubtedly increase production costs.

[0026] In view of this, the present embodiment provides a coal mine underground transportation system, which aims to improve the belt transmission structure by utilizing the characteristic that the upper and lower sides of the belt transmission structure have opposite transmission directions to solve the above technical problems.

[0027] Combined with attachment Figure 1 As shown, the coal mine underground transportation system provided in this embodiment first makes improvements to the structure of the first conveying device 100. The first conveying device 100 of this embodiment is a belt conveying structure, and the first conveying device 100 includes a first conveying roller 110, a second conveying roller 120 and a first conveyor belt 130.

[0028] Among them, there is a certain gap between the first conveyor roller 110 and the second conveyor roller 120 of this embodiment. The first conveyor belt 130 of this embodiment is a closed belt structure. The first transmission belt is respectively mounted on the first conveyor roller 110 and the second conveyor roller 120, and is tensioned by the first conveyor roller 110 and the second conveyor roller 120, so that the first conveyor belt 130 of this embodiment has a first upper belt body 131 transported along the first direction and a second lower belt body 332 transported along the second direction. The first direction is opposite to the second direction. Specifically, the first direction of this embodiment can be understood as the direction from the first conveyor roller 110 to the second conveyor roller 120, and the second direction can be understood as the direction from the second conveyor roller 120 to the first conveyor roller 110.

[0029] Based on the characteristic that the transport directions of the first upper belt body 131 and the first lower belt body 132 are opposite, which just matches the characteristic that the transport directions of coal and gangue are opposite, this embodiment makes an improvement to the structure of the first lower belt body 132 based on this. In the transport direction or the second direction along the first lower belt body 132, this embodiment configures the first lower belt body 132 to include a first conveying part 1321 and a second conveying part 1322. The horizontal height of the first conveying part 1321 is greater than the horizontal height of the second conveying part 1322, thereby forming a certain height difference between the first conveying part 1321 and the second conveying part 1322. Therefore, a material receiving or transferring structure can be configured between the first conveying part 1321 and the second conveying part 1322.

[0030] When the above-mentioned first conveying device 100 is used in specific applications, it can transport the coal mined from the working face in the first direction through the first upper belt body 131, and transport the gangue in the opposite second direction to the goaf behind the working face through the first lower belt body 132, and can receive materials or transfer materials between the first conveying part 1321 and the second conveying part 1322. The synchronous transportation of coal and gangue can be achieved through a set of conveying devices, without the need to configure two sets of transportation systems, thereby reducing the occupation of underground space and the cost required for transportation.

[0031] The first lower belt body 132 of this embodiment can be formed into the first conveying portion 1321 and the second conveying portion 1322 in various ways, such as by using the first tensioning mechanism 140. The first lower belt body 132 is tensioned by the first tensioning mechanism 140 to form the first conveying portion 1321 and the second conveying portion 1322. For another example, a similar structure such as a stepped fixed platform (not shown) can be provided below the first lower belt body 132, with the first lower belt body 132 in close contact with the stepped fixed platform, thereby also forming the first conveying portion 1321 and the second conveying portion 1322 of this embodiment.

[0032] The first tensioning mechanism 140 of this embodiment also has various structural forms. For example, the first tensioning mechanism 140 includes one or more tensioning rollers. In order to make the conveying direction of the first conveying part 1321 of this embodiment roughly parallel to the conveying direction of the first upper belt 131, and to reduce the number of tensioning rollers as much as possible, this embodiment preferably uses two tensioning rollers to implement it.

[0033] Specifically, combined with the attached Figure 1 As shown, the first tensioning mechanism 140 of this embodiment includes a first tensioning roller 141 and a second tensioning roller 142, the first tensioning roller 141 is located above the second tensioning roller 142, the first tensioning roller 141 is tensioned on the lower surface of the first lower belt body 132, and the second tensioning roller 142 is tensioned on the upper surface of the first lower belt body 132, and in order to enable the material conveyed by the first conveying part 1321 to fully enter the following material receiving mechanism 210, this embodiment designs the first tensioning roller 141 and the second tensioning roller 142 to be staggered in the vertical direction, that is, the distance between the first tensioning roller 141 and the first conveying roller 110 of this embodiment is smaller than the distance between the second tensioning roller 142 and the first conveying roller 110, so that after the first lower belt body 132 is tensioned by the first tensioning roller 141 and the second tensioning roller 142, an accommodating space can be formed, which is convenient for placing the material receiving mechanism 210 and preventing the material conveyed by the first conveying part 1321 from overflowing.

[0034] In addition, since the second conveying portion 1322 of this embodiment is formed only to facilitate the unloading of the first conveying portion 1321, the length of the first conveying portion 1321 is designed to be much larger than the length of the second conveying portion 1322 in this embodiment, that is, the distance between the first tensioning mechanism 140 and the first conveying roller 110 of this embodiment is much smaller than the distance between the first tensioning mechanism 140 and the second conveying roller 120.

[0035] Combined with Figure 1As shown, based on the above-mentioned first conveying device 100, since the conveying length of the first conveying device 100 is limited and cannot meet the conveying distance requirements, the transportation system of this embodiment also includes a transfer device 200 and a second conveying device 300. The transfer device 200 of this embodiment is configured to receive the incoming materials from the first conveying part 1321 and transport the received incoming materials outward. The second conveying device 300 of this embodiment is used to receive and transport the incoming materials from the transfer device 200, thereby extending the conveying distance of the conveying system. It should be noted that the number of transfer devices 200 and the second conveying devices 300 of this embodiment can be multiple groups, and the specific number is determined according to the conveying length.

[0036] The transfer device 200 of this embodiment includes a material receiving mechanism 210, a transfer mechanism 220 and a discharge mechanism 230 connected in sequence; the material receiving mechanism 210 of this embodiment is located between the first conveying part 1321 and the second conveying part 1322, and is used to receive materials from the first conveying part 1321; the transfer mechanism 220 of this embodiment is used to receive incoming materials from the material receiving mechanism 210 of this embodiment and transport the materials to the discharge mechanism 230; the discharge mechanism 230 of this embodiment is used to transport materials to the second conveying device 300.

[0037] The transfer mechanism 220 of this embodiment may be a small belt conveyor, a scraper conveyor, or other existing conveying structures.

[0038] Combined with attachment Figure 2 As shown, the material receiving mechanism 210 of this embodiment may include a first material receiving trough, the first material receiving trough including a first bottom wall 211 and a first side wall 212 connected to the four sides of the first bottom wall 211, the angle between the first bottom wall 211 and the horizontal plane is greater than the natural angle of repose of the material therein, and the first side wall 212 is provided with a first discharge port 213 for material outflow, so that the incoming material of the first conveying part 1321 can flow out from the first discharge port 213 of this embodiment under its own gravity after entering the first material receiving trough.

[0039] Similarly, combined with Figure 3 As shown, the discharge mechanism 230 of this embodiment includes a second material receiving trough, the second material receiving trough includes a second bottom wall 231 and a second side wall 232 connected to the second bottom wall 231. The angle between the second bottom wall 231 and the horizontal plane is greater than the natural repose angle of the material therein, and the second side wall 232 is provided with a second discharge port 233 for material flow out, so that the incoming material of the transfer mechanism 220 can flow out from the first discharge port 213 of this embodiment under its own gravity after entering the first material receiving trough.

[0040] Due to the influence of the first conveying roller 110 and the second conveying part 1322, the first discharge port 213 of this embodiment is a gap set on one of the wall surfaces of the first side wall 212 of this embodiment, that is, the first side wall 212 of this embodiment has four wall surfaces, one of which is provided with a gap located outside the range of the second conveying part 1322, and the setting of the second discharge port 233 of this embodiment is not affected by this. Therefore, the second side wall 232 of this embodiment can be designed to have only three wall surfaces, and the missing wall surface is used for unloading.

[0041] In addition, the opening directions of the first discharge port 213 and the second discharge port 233 of this embodiment can also be adjusted, thereby changing the conveying direction of the transfer mechanism 220 and the second conveying device 300 to better match the space in the tunnel.

[0042] Combined with the Figure 1 As shown, when the two conveying devices cannot meet the conveying requirements, the structure of the second conveying device 300 of this embodiment can be the same as the first conveying device 100, that is, the second conveying device 300 in the figure can continue to connect with other second conveying devices 300 through the transfer device 200, thereby extending the conveying length.

[0043] Therefore, the second conveying device 300 of this embodiment includes a third conveying roller 310, a fourth conveying roller 320 and a second conveyor belt 330. The second conveyor belt 330 is mounted on the third conveying roller 310 and the fourth conveying roller 320 to form a second upper belt body 331 and a second lower belt body 332 with opposite transport directions; wherein, along the conveying direction of the second lower belt body 332, the second lower belt body 332 of this embodiment includes a third conveying part 3321 and a fourth conveying part 3322, and the horizontal height of the third conveying part 3321 is greater than the horizontal height of the fourth conveying part 3322.

[0044] Similarly, the formation of the third conveying portion 3321 and the fourth conveying portion 3322 of this embodiment can also be achieved through the second tensioning mechanism 340. The second tensioning mechanism 340 tensions the second lower belt body 332 and forms the third conveying portion 3321 and the fourth conveying portion 3322 with a height difference between the second lower belt body 332.

[0045] Specifically, the second tensioning mechanism 340 of this embodiment includes a third tensioning roller 341 and a fourth tensioning roller 342. The third tensioning roller 341 is located above the fourth tensioning roller 342, and the distance between the third tensioning roller 341 and the third conveying roller 310 is smaller than the distance between the fourth tensioning roller 342 and the fourth conveying roller 320, thereby forming an interlacing between the two to form a space for accommodating the material receiving trough.

[0046] In the description of this embodiment, it should be noted that those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment method can be implemented by instructing the control device through a computer, and the program can be stored in a computer-readable storage medium. When the program is executed, it may include the processes of the above-mentioned method embodiments, wherein the storage medium may be a memory, a disk, an optical disk, etc.

[0047] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

[0048] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0049] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0050] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one 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 present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A coal mine underground transportation system, comprising a first conveying device (100), characterized in that: The first conveying device (100) comprises a first conveying roller (110), a second conveying roller (120) and a first conveyor belt (130); the first conveyor belt (130) is sleeved on the first conveying roller (110) and the second conveying roller (120) to form a first upper belt body (131) and a first lower belt body (132) with opposite conveying directions; Wherein, along the conveying direction of the first lower belt body (132), the first lower belt body (132) includes a first conveying portion (1321) and a second conveying portion (1322), and the horizontal height of the first conveying portion (1321) is greater than the horizontal height of the second conveying portion (1322); It also includes a transfer device (200) and a second conveying device (300); the transfer device (200) is configured to receive the incoming materials from the first conveying portion (1321) and convey the received incoming materials outward; the second conveying device (300) is used to receive and convey the incoming materials from the transfer device (200); The transfer device (200) includes a material receiving mechanism (210), a transfer mechanism (220) and a discharging mechanism (230) connected in sequence; the material receiving mechanism (210) is located between the first conveying part (1321) and the second conveying part (1322), and is used to receive materials from the first conveying part (1321); the transfer mechanism (220) is used to receive incoming materials from the material receiving mechanism (210) and transport the materials to the discharging mechanism (230); the discharging mechanism (230) is used to transport materials to the second conveying device (300).

2. The coal mine underground transportation system according to claim 1, characterized in that: The first conveying device (100) includes a first tensioning mechanism (140), which tensions the first lower belt body (132) so that the first lower belt body (132) forms the first conveying portion (1321) and the second conveying portion (1322).

3. The coal mine underground transportation system according to claim 2, characterized in that: The first tensioning mechanism (140) includes a first tensioning roller (141) and a second tensioning roller (142); The first tensioning roller (141) is located above the second tensioning roller (142), the first tensioning roller (141) is tensioned on the lower surface of the first lower belt body (132), and the second tensioning roller (142) is tensioned on the upper surface of the first lower belt body (132).

4. The coal mine underground transportation system according to claim 1, characterized in that: The length of the first conveying portion (1321) is greater than the length of the second conveying portion (1322).

5. The coal mine underground transportation system according to any one of claims 1 to 4, characterized in that: When a first tensioning roller (141) and a second tensioning roller (142) are included, the first tensioning roller (141) is at least partially located above the material receiving mechanism (210), and the second tensioning roller (142) has a preset interval with the material receiving mechanism (210).

6. The coal mine underground transportation system according to claim 5, characterized in that: The material receiving mechanism (210) comprises a first bottom wall (211) and a first side wall (212) connected to the first bottom wall (211) on all sides, wherein the angle between the first bottom wall (211) and a horizontal plane is greater than the natural angle of repose of the material therein, and the first side wall (212) is provided with a first discharge port (213) for the material to flow out; And / or, the discharge mechanism (230) includes a second bottom wall (231) and a second side wall (232) connected to the second bottom wall (231) on four sides, the angle between the second bottom wall (231) and the horizontal plane is greater than the natural repose angle of the material therein, and the second side wall (232) is provided with a second discharge port for the material to flow out.

7. The coal mine underground transportation system according to any one of claims 1 to 4, characterized in that: The second conveying device (300) includes a third conveying roller (310), a fourth conveying roller (320) and a second conveyor belt (330), and the second conveyor belt (330) is mounted on the third conveying roller (310) and the fourth conveying roller (320), and forms a second upper belt body (331) and a second lower belt body (332) with opposite transport directions; wherein, along the transport direction of the second lower belt body (332), the second lower belt body (332) includes a third conveying part (3321) and a fourth conveying part (3322), and the horizontal height of the third conveying part (3321) is greater than the horizontal height of the fourth conveying part (3322).

8. The coal mine underground transportation system according to claim 7, characterized in that: The second conveying device (300) includes a second tensioning mechanism (340), which tensions the second lower belt body (332) and enables the second lower belt body (332) to form the third conveying part (3321) and the fourth conveying part (3322) with a height difference.

Images