Detachable transfer conveyor in middle trough of working face

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By designing a detachable transfer conveyor in the middle trough of the final mining face, and utilizing telescopic trough sections and lifting devices, the problem of resource waste in the final mining face was solved, enabling flexible disassembly of equipment and smooth material handling, thereby improving the resource recovery rate.

CN114572621BActive Publication Date: 2026-07-21SHANXI COAL MINE MASCH MFG CO LTD +1

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: SHANXI COAL MINE MASCH MFG CO LTD
Filing Date: 2022-03-10
Publication Date: 2026-07-21

AI Technical Summary

Technical Problem

In fully mechanized coal mining, huge coal pillars are left at the end of the mining face that cannot be mined, resulting in resource waste. Existing equipment layout occupies a lot of space and affects resource recovery rate.

Method used

Design a detachable transfer conveyor in the middle trough of the final mining face, including a head, tail, body and a detachable middle trough section. The telescopic trough section and telescopic cylinder realize the extension and retraction of the equipment. Combined with a lifting device and a chain blocking device, the equipment can be disassembled and moved, shortening the length of the equipment.

Benefits of technology

It effectively reduces resource waste and improves resource recycling rate. The detachable design of the equipment ensures smooth material handling and reduces the space occupied by the equipment.

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Abstract

The application discloses a detachable middle trough of a conveyer in a tailing working face, which comprises a head, a body and a tail, the head, the body and the tail are provided with scraper chain assemblies, the head and the tail are respectively provided with first and second sprocket devices, the body comprises sequentially connected connecting trough sections, middle trough sections, telescopic trough sections and unloading sections, the connecting trough sections are connected to the head, the unloading sections are connected to the tail, the middle trough sections are composed of a plurality of unit troughs which are detachably connected, and the scraper chain assemblies are composed of a plurality of scraper chain units which are detachably connected. The application removes the unit troughs and the scraper chain units continuously, and drives the unloading sections and the tail to move to the middle trough sections through the telescopic trough sections, so that the scraper conveyer and the unloading sections are effectively overlapped, the material is smoothly conveyed, resource waste is reduced, and the resource recovery rate is effectively improved.

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Description

Technical Field

[0001] This invention belongs to the technical field of coal mine transportation equipment, and more specifically relates to a detachable transfer conveyor in the middle of the final mining face. Background Technology

[0002] In the fully mechanized coal mining process, the raw coal mined by the coal mining machine first falls onto a scraper conveyor, then is transferred to a transshipment conveyor, and finally transported to the main conveyor via a roadway belt conveyor connected to the transshipment conveyor. The coal then reaches the surface via the main conveyor. Traditionally, both the transshipment conveyor and the roadway belt conveyor need to be installed simultaneously, each with its own head and tail section, requiring overlap. This arrangement occupies a significant amount of usable space. Since mining ceases when the final face reaches the stop line, a large, unminable coal pillar remains, and its length far exceeds the safety requirements for coal mine pillars, resulting in substantial resource waste and losses for the company. Summary of the Invention

[0003] To address the aforementioned problems in the existing technology, this invention provides a detachable transfer conveyor for the middle trough of the final mining face, comprising a head, a body, and a tail. Scraper chain assemblies are installed on the head, body, and tail. A first sprocket device and a second sprocket device are respectively installed on the head and tail. The scraper chain assembly is sleeved on the first and second sprocket devices. The body includes a connecting trough section, a middle trough section, a telescopic trough section, and an unloading section. One end of the connecting trough section is connected to the head, one end of the middle trough section is connected to the other end, one end of the telescopic trough section is connected to the other end, one end of the unloading section is connected to the other end, and the other end of the unloading section is connected to the tail. The middle trough section is composed of multiple detachably connected unit troughs, and the scraper chain assembly is composed of multiple detachable scraper chain units connected by connecting links.

[0004] Furthermore, in the aforementioned detachable transfer conveyor in the middle section of the unmined working face, a telescopic hydraulic cylinder is installed on the telescopic trough section, and the telescopic trough section is extended or shortened by the telescopic hydraulic cylinder.

[0005] Furthermore, in the aforementioned detachable transfer conveyor in the middle trough of the unmined working face, a lifting device is provided near the middle trough section in the telescopic trough section for lifting and dismantling the unit troughs that need to be dismantled in the middle trough section.

[0006] Furthermore, in the aforementioned detachable transfer conveyor in the middle trough of the unmined working face, a first chain-stopping device mounting hole is provided near the middle trough section in the telescopic trough section for installing the first chain-stopping device, and each unit trough in the middle trough section is provided with a second chain-stopping device mounting hole for installing the second chain-stopping device.

[0007] The detachable transfer conveyor in the middle trough of the final mining face of the present invention shortens the overall length of the machine by continuously removing the unit troughs of the middle trough section and the corresponding length of the scraper chain unit in the scraper chain assembly. At the same time, the repeated extension and retraction of the telescopic trough section drives the unloading section and the tail of the machine to move towards the middle trough section, ensuring that the head and unloading section of the scraper conveyor are effectively connected, so that the material can be transported smoothly, reducing resource waste and effectively improving the resource recovery rate. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0009] Figure 1 This is a schematic diagram of the overall structure of the detachable transfer conveyor in the middle trough of the final mining face of the present invention.

[0010] Figure 2 This is a schematic diagram of the structure of the central trough section and the telescopic trough section of the detachable transfer conveyor in the central trough of the final mining face of the present invention, wherein the central trough section and the telescopic trough section are connected.

[0011] Figure 3 This is a schematic diagram of the structure of the central trough section and the telescopic trough section of the detachable transfer conveyor in the central trough of the final mining face of the present invention, wherein the central trough section and the telescopic trough section are in a disconnected state.

[0012] Figure 4 This is an assembly diagram of the telescopic trough section and lifting device of the detachable transfer conveyor in the middle of the final mining face of the present invention.

[0013] Explanation of reference numerals in the attached figures:

[0014] 10-Head section, 20-Connecting groove section, 30-Middle groove section, 301-Second chain blocking device mounting hole, 40-Extension groove section, 401-First chain blocking device mounting hole, 50-Unloading section, 60-Tail section, 70-Connecting device, 80-Scraper chain assembly, 90-Lifting device. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0016] like Figures 1 to 4 As shown, the detachable transfer conveyor in the middle trough of the final mining face of the present invention includes a head 10, a tail 60, and a body connected to the head 10 and the tail 60. Scraper chain assemblies 80 are installed on the head 10, tail 60, and body. A first sprocket device is installed on the head 10, and a second sprocket device is installed on the tail 60. The scraper chain assembly 80 is sleeved on the first and second sprocket devices. The body includes a connecting trough section 20, a middle trough section 30, a telescopic trough section 40, and an unloading section 50. One end of the connecting trough section 20 is connected to the head 10, one end of the middle trough section 30 is connected to the other end of the connecting trough section 20, one end of the telescopic trough section 40 is connected to the other end of the middle trough section 30, one end of the unloading section 50 is connected to the other end of the telescopic trough section 40, and the other end of the unloading section 50 is connected to the tail 60. The middle trough section 30 is composed of multiple unit troughs that are detachably connected. The connecting trough section 20, the middle trough section 30, the telescopic trough section 40 and the unloading section 50 are provided with upper and lower chain tracks. The scraper chain assembly 80 forms a closed loop around the head 10 and the tail 60 through the upper and lower chain tracks, the first sprocket device and the second sprocket device, and circulates.

[0017] Preferably, in the detachable transfer conveyor of the middle trough of the final mining face of the present invention, a telescopic cylinder is installed on the telescopic trough section 40. By extending or shortening the telescopic cylinder, the telescopic trough section 40 is extended or shortened, ensuring the reliability of the connection between the middle trough section 30, the telescopic trough section 40 and the unloading section 50. At the same time, it provides effective disassembly space for the middle trough section 30 when the unit trough of the middle trough section 30 is disassembled.

[0018] Preferably, in the detachable transfer conveyor of the middle trough of the final mining face of the present invention, a lifting device 90 is installed at a position near the middle trough section 30 of the telescopic trough section 40 for lifting and dismantling the unit trough of the middle trough section 30.

[0019] Preferably, in the detachable transfer conveyor in the middle trough of the final mining face of the present invention, connecting devices 70 are provided between the head 10 and the connecting trough section 20, between the connecting trough section 20 and the middle trough section 30, between each unit trough in the middle trough section 30, between the middle trough section 30 and the telescopic trough section 40, between the telescopic trough section 40 and the unloading section 50, and between the unloading section 50 and the tail 60, to ensure that the connection between the head 10, the connecting trough section 20, the middle trough section 30, the telescopic trough section 40, the unloading section 50 and the tail 60 is secure.

[0020] Preferably, in the detachable transfer conveyor in the middle trough of the final mining face of the present invention, the scraper chain assembly 80 is composed of multiple detachable scraper chain units connected by chain links, and each scraper chain unit includes a scraper and a chain.

[0021] Preferably, in the detachable transfer conveyor of the middle trough of the final mining face of the present invention, a first chain blocking device mounting hole 401 is provided at the position of the telescopic trough section 40 near the middle trough section 30, and each unit trough in the middle trough section 30 is provided with a second chain blocking device mounting hole 301. When disassembling the middle trough section 30, the first chain blocking device and the second chain blocking device are installed through the first chain blocking device mounting hole 401 and the second chain blocking device mounting hole 301 respectively, which facilitates the disassembly, dragging, connection and tightening of the scraper chain assembly 80.

[0022] When the detachable transfer conveyor in the middle trough of the final mining face of the present invention is installed for operation, the head 10 is fixedly overlapped with the main belt at a 90° angle to the main belt, and the unloading section 50 is overlapped with the scraper conveyor head at a 90° angle to the scraper conveyor head. The overlap position between the scraper conveyor head and the unloading section 50 is located at the end of the unloading section 50 near the tail 60. During coal mining operations, the telescopic trough section 40 is in an extended state, the scraper chain assembly 80 is tensioned, and the connection between the connecting trough section 20, the middle trough section 30, the telescopic trough section 40, and the unloading section 50 is closed. At this time, it is not necessary to install the first chain blocking device and the second chain blocking device.

[0023] As coal mining operations proceed, the scraper conveyor moves forward with the coal face. The overlap position between the scraper conveyor head and the unloading section 50 changes from the initial position near the tail 60 of the unloading section 50 to the position near the telescopic trough section 40. At this point, coal mining operations cease. As needed, the lifting device 90 is used to dismantle the unit troughs of the middle trough section 30, and a portion of the scraper chain units in the scraper chain assembly 80 is removed. The length of the removed scraper chain unit is equal to twice the total length of the dismantled unit troughs. Then, the telescopic trough section 40 retracts via a telescopic cylinder, causing the telescopic trough section 40 to move the unloading section 50 and the tail 60 towards the middle trough section 30. The overall length of the detachable transfer conveyor in the middle trough of the final working face is shortened, and the overlap position between the scraper conveyor head and the unloading section 50 remains at the end of the unloading section 50 near the tail 60, thus completing one dismantling cycle.

[0024] The following example, using the disassembly of a single unit of the central trough section 30, illustrates the process of disassembling the central trough section of the unmined working face using the detachable transfer conveyor of the present invention:

[0025] The connecting device between the unit slot to be disassembled and the unit slot that does not need to be disassembled, which is connected to the telescopic slot in the middle slot 30 and the telescopic slot 40, is removed. The telescopic slot 40 is retracted by the telescopic cylinder. After the retraction is completed, the first chain blocking device is installed in the telescopic slot 40 through the first chain blocking device mounting hole 401 on the telescopic slot 40. The second chain blocking device is installed in the middle slot 30 through the second chain blocking device mounting hole 301 on any unit slot that does not need to be disassembled. The scraper chain assembly 80 is fixed to the telescopic slot 40 and the middle slot 30 respectively by the first chain blocking device and the second chain blocking device.

[0026] The telescopic groove section 40 is partially extended by the telescopic cylinder, which loosens the scraper chain assembly 80 between the first and second chain blocking devices, opens the connecting ring, disconnects the scraper chain assembly 80, and removes the connecting device 70 between the unit groove to be disassembled in the middle groove section 30 and the telescopic groove section 40.

[0027] The telescopic trough section 40 is retracted again by the telescopic cylinder, which separates it from the unit trough to be disassembled in the middle trough section 30. The unit trough to be disassembled is lifted and removed by the lifting device 90. Then, the scraper chain unit in the scraper chain assembly 80 with a length equal to twice the length of the disassembled unit trough is removed.

[0028] After the unit slot to be disassembled is removed, the first and second chain-blocking devices fix the two ends of the scraper chain assembly 80 to the telescopic slot section 40 and the middle slot section 30, respectively. At this time, the scraper chain assembly 80 and the second sprocket device of the tail section 60 form a pulley system. When the telescopic slot section 40 is extended by the telescopic cylinder, it drives the scraper chain assembly 80 to move towards the middle slot section 30. The scraper chain assembly 80 then drives the telescopic slot section 40 and the connected unloading section 50 and tail section 60 to move towards the middle slot section 30 through the pulley system until the telescopic slot section 40, unloading section 50 and tail section 60 have moved a distance of one unit slot length. After the movement is completed, the scraper chain assembly 80 is connected with the connecting link, and the telescopic slot section 40 is connected to the remaining unit slots that do not need to be disassembled through the connecting device 70. The first and second chain-blocking devices are removed, thereby completing the disassembly of one unit slot in the middle slot section 30 and causing the telescopic slot 40, unloading section 50 and tail section 60 to move forward.

[0029] In the detachable transfer conveyor in the middle trough of the final mining face of the present invention, if it is necessary to disassemble multiple unit troughs in the middle trough section 30 according to the actual coal mining operation, the other unit troughs in the middle trough section 30 can be disassembled one by one according to the above method. Each time the unit trough is disassembled, it is the unit trough in the middle trough section 30 that is connected to the telescopic trough section 40.

[0030] As the coal mining work progresses, the scraper conveyor continuously moves towards the telescopic trough section 40, and the dismantling of the unit troughs in the middle trough section 30 and the scraper chain units in the scraper chain assembly is carried out in a continuous cycle. The length of the detachable transfer conveyor in the middle trough of the final mining face is continuously shortened until all unit troughs in the middle trough section 30 are dismantled or the safety standard for stopping mining is reached, and the coal mining production of the final mining face is completed.

[0031] The detachable transfer conveyor in the middle trough of the final mining face of the present invention shortens the overall length of the machine by continuously removing the unit troughs of the middle trough section and the corresponding length of the scraper chain unit in the scraper chain assembly. At the same time, the repeated extension and retraction of the telescopic trough section drives the unloading section and the tail of the machine to move towards the middle trough section, ensuring that the head and unloading section of the scraper conveyor are effectively connected, so that the material can be transported smoothly, reducing resource waste and effectively improving the resource recovery rate.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Additionally, the terms "connection," etc., used herein should be interpreted broadly, referring to fixed connections or detachable connections, direct connections or indirect connections via intermediate components. Moreover, terms such as "front," "rear," "left," "right," "upper," "lower," "inner," and "outer" in this document refer to the placement shown in the accompanying drawings.

[0033] It should also be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present invention.

Claims

1. A detachable transfer conveyor in the middle of a final mining face, comprising a head, a body, and a tail, wherein scraper chain assemblies are installed in the head, body, and tail, characterized in that... The machine head and tail are respectively equipped with a first sprocket device and a second sprocket device. The scraper chain assembly is sleeved on the first sprocket device and the second sprocket device. The machine body includes a connecting groove section, a middle groove section, a telescopic groove section and an unloading section. One end of the connecting groove section is connected to the machine head, one end of the middle groove section is connected to the other end of the connecting groove section, one end of the telescopic groove section is connected to the other end of the middle groove section, one end of the unloading section is connected to the other end of the telescopic groove section, and the other end of the unloading section is connected to the machine tail. The middle groove section is composed of multiple unit grooves that are detachably connected. The scraper chain assembly is composed of multiple detachable scraper chain units connected by connecting links. The telescopic groove section is equipped with a telescopic hydraulic cylinder, which extends or shortens the telescopic groove section. A lifting device is provided near the middle section of the expansion joint, for lifting and disassembling the unit slots that need to be disassembled in the middle section; The scraper chain assembly consists of multiple detachable scraper chain units connected by chain links. Each scraper chain unit includes a scraper and a chain. A first chain-stop device mounting hole is provided near the middle section of the expansion groove section for installing the first chain-stop device. Each unit groove in the middle section is provided with a second chain-stop device mounting hole for installing the second chain-stop device. During installation, the machine head is fixedly overlapped with the main belt at a 90° angle, and the unloading section is overlapped with the scraper conveyor head at a 90° angle. The overlap position between the scraper conveyor head and the unloading section is located at the end of the unloading section near the tail. During coal mining operations, the telescopic trough section is in an extended state, the scraper chain assembly is tensioned, and the connecting trough section, the middle trough section, the telescopic trough section, and the unloading section are connected and closed. The first chain blocking device and the second chain blocking device are not installed. When disassembling the unit slots in the middle section, the total length of the scraper chain units to be disassembled is equal to twice the total length of the unit slots actually disassembled. When disassembling the unit slots of the middle section, each unit slot to be disassembled is the unit slot in the middle section that is connected to the expansion and contraction section. During the disassembly of the unit trough of the middle section, the scraper chain assembly and the second sprocket device at the tail form a pulley system. When the telescopic trough section extends, the pulley system drives the telescopic trough section, the unloading section and the tail to move toward the middle section.