Working method and system of coal face conveying system

Abstract

The invention provides a working method and system of a coal face conveying system, and the working method based on the coal face conveying system comprises the steps that an advance support module moves in the advancing direction of a coal face, so that the advance support module reaches the advancing position; and a plurality of working face hydraulic supports in the operation module walk to the propelling positions in the propelling direction of the working face according to preset actions, at least part of the rails are propelled forwards along with walking of the working face hydraulic supports, and after all the working face hydraulic supports reach the propelling positions, the rails are propelled. According to the working method of the coal face conveying system, a working mode of step-by-step propelling of the advance support module, the track and the operation module is adopted, so that many problems caused by directly moving the track are avoided, and the conveying device can directly reach a working face area; the technical problems that materials and workers cannot directly reach a working face area and conveying is difficult in coal mining operation in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine machinery, and in particular to a working method and system of a coal mining face conveying system. Background Art

[0002] In the prior art, it is common practice to fix rails on the top of the tunnel for conveying conveying devices such as monorail cranes, etc. These conveying devices are mainly used to transport materials and personnel to the coal mining work area to realize operations such as conveying materials or repairing coal mining machines.

[0003] However, in actual operation, especially at the working face, there are significant transportation problems. Hydraulic supports are usually used for support in the working face area, so it is impossible to install fixed tracks in the working face area. Moreover, as the coal mining operation progresses, the working face continues to move forward, resulting in the fixed track system being unable to follow the progress, and the monorail crane locomotive cannot directly reach the working face area. Therefore, materials and labor must be transported manually from the end of the track to the working face area, which increases labor intensity and time costs, resulting in low material transportation efficiency. Relying on manual handling not only increases safety risks, but also greatly affects the speed and efficiency of material transportation, bringing inconvenience to production.

[0004] Therefore, the prior art needs to be further developed. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and provide a working method and system for a coal mining face conveying system to solve the technical problem in the related technology that materials and labor cannot directly reach the working face area during coal mining operations and transportation is difficult.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: a working method of a coal mining face conveying system is provided, the coal mining face conveying system includes an operation module, an advance support module and a conveying module, the conveying module includes a conveying device and a track arranged in the advance support module and the operation module for realizing the conveying of the conveying device, and the working method implemented based on the coal mining face conveying system includes: The advance support module moves along the advancing direction of the working face, so that the advance support module reaches the advancing position; Several working surface hydraulic supports in the operation module move to the advancement position along the advancement direction of the working surface according to preset actions. At least part of the track is advanced forward with the movement of several working surface hydraulic supports. When all working surface hydraulic supports reach the advancement position, the track completes advancement.

[0007] Further, the track includes a first track located in the operation module, and several working surface hydraulic supports in the operation module respectively move to the advancement position along the advancement direction of the working surface according to the preset action, and at least part of the track moves forward with the movement of the several working surface hydraulic supports. When all the working surface hydraulic supports reach the advancement position, the track completes the advancement, specifically: When the coal cutter cuts coal, the coal cutter moves along the extension direction of the working face and cuts the coal wall of the working face; The hydraulic supports of the working face move to the advancing position in sequence along the advancing direction of the working face to support the coal wall of the working face that has been cut; The hydraulic supports of the working surface moving in sequence carry at least part of the first track and move forward, so that the track gradually approaches the advancing position; When all the hydraulic supports on the working surface reach the advancing position, the track is advanced at the same time.

[0008] Further, the track includes a second track located at the advance support module, and the advance support module moves along the advancement direction of the working surface so that the advance support module reaches the advancement position, including: Before the coal cutter cuts coal, several advance support hydraulic supports in the advance support module move along the advancement direction of the working surface, and the second mounting structure located on the top plate of the advance support module slides relative to the second track, so that the advance support module reaches the advancement position before the second track.

[0009] Furthermore, the track includes a third track located between the first track and the second track, and the hydraulic supports of the working surface moving in sequence carry at least part of the first track and advance forward, so that the track gradually approaches the advancing position, including: When the working surface hydraulic support carries at least part of the first track and moves forward, the second track and the second mounting structure are pushed by the third track to slide relative to each other, so that the track gradually approaches the advancing position.

[0010] Furthermore, it also includes: Before the coal cutter cuts coal, the guard plates on the hydraulic supports of several working faces are controlled to fold to avoid the coal cutter, and at the same time, the tensioning degree of the first tensioning component and the second tensioning component used to install the first rail is changed to keep the first rail in a relaxed state.

[0011] Furthermore, after the plurality of working surface hydraulic supports in the operation module respectively move to the propulsion position along the propulsion direction of the working surface according to the preset actions, it also includes: The guard plate is unfolded to support the coal wall of the working face that has completed cutting, and at the same time, the tensioning degree of the first tensioning component and the second tensioning component is changed to keep the first track in a tensioned state.

[0012] Furthermore, simultaneously changing the tensioning degree of the first tensioning member and the second tensioning member comprises: The guard plate is unfolded, and the guard plate pulls the second tensioning component in a direction away from the first tensioning component, so that the first tensioning component and the second tensioning component jointly tighten the track. Furthermore, before the advance support module moves along the advancing direction of the working face, it also includes: The conveying device is moved along the track into the advance support module to temporarily store the conveying device.

[0013] Furthermore, it also includes: When all the hydraulic supports on the working surface reach the advancing position and the track has completed advancing, the conveying device is controlled to move along the track to perform the conveying task.

[0014] A coal mining face conveying system applies the above working method.

[0015] Beneficial effects: 1. In the working method of this embodiment, the track is a movable track. During the advancement process, the advance support module is advanced to the advancement position before the track and the operating module. Then, as the operating module is gradually advanced, the track is gradually moved forward, so that the track reaches the advancement position. By adopting a working method in which the advance support module, the track and the operating module are advanced step by step, many problems caused by directly moving the track are avoided, and the advancement of the advance support module and the operating module is avoided from being restricted by the track, ensuring that the track can reach the advancement position together with the operating module and the advance support module, so that in subsequent transportation tasks, the transportation device can directly reach the working face area, solving the technical problem in the related technology that materials and labor cannot directly reach the working face area in coal mining operations and transportation is difficult.

[0016] 2. In the working method of this embodiment, the guard plate is controlled to fold to avoid the coal cutter and ensure the coal cutting work of the coal cutter. At the same time, the folding of the guard plate can make the second tensioning component no longer be tightened by the guard plate. At this time, the track is only tightened by the first tensioning component, and the track is in a suspended state. The track remains loose as a whole and can swing freely. When the track is bent and deformed, it can avoid the situation where the track is easily broken when it is bent and deformed, so as to facilitate the forward advancement of the operation module.

[0017] 3. In the working method of this embodiment, the guard plate is controlled to be unfolded, which can not only support the coal wall, but also the first tensioning component and the second tensioning component are pulled in opposite directions respectively, so that the track can be tightened and the track can be kept in a tensioned state. The tightened track is conducive to the conveying device passing through the track, thereby improving the conveying efficiency of the conveying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a coal mining face conveying system adopted in an embodiment of the present invention; Figure 2 It is a structural schematic diagram of an advance support module of a coal mining face conveying system adopted in an embodiment of the present invention; Figure 3 is a structural schematic diagram of a second installation structure of a coal mining face conveying system used in an embodiment of the present invention; Figure 4 yes Figure 3 A magnified view of point B in FIG. Figure 5 It is a structural schematic diagram of a side guard plate of a coal mining face conveying system used in an embodiment of the present invention; Figure 6 It is a structural schematic diagram of a first installation structure of a coal mining face conveying system in a conveying state adopted in an embodiment of the present invention; Figure 7 It is a structural schematic diagram of the track of the coal mining face conveying system used in the embodiment of the present invention when it is in a conveying state; Figure 8 It is a structural schematic diagram of a first installation structure of a coal mining face conveying system used in an embodiment of the present invention in a first position in a pre-conveying state; Fig. 9 It is a structural schematic diagram of the first position of the track of the coal mining face conveying system used in the embodiment of the present invention when it is in a pre-conveying state; Fig.10 It is a structural schematic diagram of a first installation structure of a coal mining face conveying system used in an embodiment of the present invention in a second position in a pre-conveying state; Fig.11 It is a structural schematic diagram of the second position when the track of the coal mining face conveying system used in the embodiment of the present invention is in the pre-conveying state; Fig.12 It is a flow chart of the working method of the coal mining face conveying system adopted in the embodiment of the present invention.

[0019] The above drawings include the following reference numerals: 10. Coal cutter; 20. Conveying device; 1. Operation module; 11. Working face hydraulic support; 2. Advance support module; 21. Advance support hydraulic support; 3. Track; 31. First track; 311. Track unit; 312. Connecting plate; 313. Long hole; 32. Second track; 33. Third track; 4. First mounting structure; 41. First tensioning member; 42. Second tensioning member; 5. Second mounting structure; 51. Connecting piece; 52. Slide; 53. Roller; 54. Fixing piece; 6. Guard plate; 61. First guard plate; 62. Second guard plate; 63. Mounting hole; 71. First conveying space; 72. Second conveying space. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] It should be noted that the installation of rails and conveying devices on the working face in the prior art has the following difficulties: when cutting coal, conveying devices such as rail cranes and locomotives cannot be directly stored in the working face, otherwise it will interfere with the coal cutting operation of the coal cutter. Therefore, the conveying device can only be transported to the working face from the external tunnel. As the coal cutting operation progresses, the working face gradually advances forward, and the conveying device in the fixed tunnel cannot be connected with the rail in the gradually advancing working face; if an advance support module is used to store the conveying device during excavation, the advance support module and the working face are advanced synchronously. In this case, the rail is fixedly laid on the top plate of the advance support module and the operating module. Due to the connection of the rail, the advancement of the advance support module and the operating module is restricted, which affects the advancement speed and coal mining speed of the working face. In addition, the rail is directly fixed on the top plate of several hydraulic supports on the working face. During the excavation process, several hydraulic supports in the working face are advanced forward one by one in sequence as the coal cutting operation progresses. Some of the hydraulic supports move first and the remaining hydraulic supports remain in place. The rail is twisted into a curved shape, and there is a problem that the rail is easily broken.

[0022] It should be noted that in the coal mining operation, the coal mining operation process is as follows: when the coal cutter 10 has completed one work along the working face tunnel (the length of the working face tunnel is, for example, 1000 meters), the coal cutter 10 stops working; then the hydraulic support in the advance support area moves forward a corresponding distance according to the progress of coal cutting, and then the coal cutter 10 starts the coal cutting operation of the next working face. At this time, the guard plate 6 of the hydraulic support 11 of the working face is retracted to prevent interference with the coal cutter 10. The coal cutter 10 gradually moves along the working face tunnel, and the hydraulic support 11 of the working face is moved forward one by one as the coal cutter 10 cuts. The hydraulic support 11 of the working face in the cutting area is pushed forward one by one, and the guard plate 6 is unfolded so that the guard plate 6 is close to the coal wall of the working face. As the coal cutting of this layer of the working face is completed, all the hydraulic supports of the working face are pushed forward, and the guard plate 6 is unfolded to be close to the coal wall. The conveying system and the working method thereof in the present invention are inventions and creations completed based on the coal mining system and support method in the prior art.

[0023] According to an embodiment of the present invention, a working method of a coal mining face conveying system is provided. Figures 1 to 12The coal mining face conveying system includes an operation module 1, an advance support module 2 and a conveying module. The conveying module includes a conveying device 20 and a track 3 arranged in the advance support module 2 and the operation module 1 for realizing the conveying of the conveying device 20. The working method implemented based on the coal mining face conveying system includes: The advance support module 2 moves along the advancing direction of the working face, so that the advance support module 2 reaches the advancing position; Several working surface hydraulic supports 11 in the operation module 1 move to the advancement position along the advancement direction of the working surface according to preset actions, and at least part of the track 3 moves forward with the movement of several working surface hydraulic supports 11. When all working surface hydraulic supports 11 reach the advancement position, the track 3 completes the advancement.

[0024] Specifically, in the operation module 1, the operation module 1 includes a plurality of working surface hydraulic supports 11 spaced apart along the extension direction of the working surface, and the operation module 1 is movably arranged along the advancement direction of the working surface; the advance support module 2, the advance support module 2 includes a plurality of advance support hydraulic supports 21 spaced apart along the advancement direction of the working surface, and the advance support module 2 is movably arranged along the advancement direction of the working surface; the conveying module, the conveying module includes a conveying device 20 and a track 3 for carrying the conveying device 20, the track 3 is continuously laid in the operation module 1 and the advance support module 2, and the track 3 and the advance support module 2 are relatively movably arranged.

[0025] When the advance support module 2 moves forward, since the track 3 and the advance support module 2 are relatively movably arranged, the track 3 will not move synchronously with the advance support module 2, so that the advance support module 2 completes the forward advancement before the track 3 and the operating module 1. At this time, the conveying device does not have the conditions for transportation. As the operating module 1 moves forward during the excavation process, the hydraulic supports 11 of each working face can gradually push the track 3 forward. As the working face completes the harvesting and all the hydraulic supports of the working face are pushed forward, the track 3 can also be pushed forward. At this time, the track 3, the advance support module 2 and the operating module 1 have completed the same advancement distance and are in the same advancement position. The conveying system has the conditions for transportation, so that materials can be transported or the working face can be inspected.

[0026] In the working method of this embodiment, the track 3 is a movable track. During the advancement process, the advance support module 2 is advanced to the advancement position before the track 3 and the operation module 1. Then, as the operation module 1 is gradually advanced, the track 3 is gradually advanced forward, so that the track 3 reaches the advancement position. By adopting the working mode of advancing the advance support module 2, the track 3 and the operation module 1 step by step, many problems caused by directly moving the track 3 are avoided, and the advancement of the advance support module 2 and the operation module 1 is avoided from being restricted by the track 3, which ensures that the track 3 can reach the advancement position together with the operation module 1 and the advance support module 2. Therefore, in the subsequent transportation task, the transportation device 20 can directly reach the working face area, which solves the technical problem that materials and labor cannot directly reach the working face area and transportation is difficult in the related technology during coal mining operations.

[0027] In the working method of the coal mining face conveying system of this embodiment, the track 3 includes a first track 31 located in the operation module 1, and the plurality of working face hydraulic supports 11 in the operation module 1 respectively move to the advancement position along the advancement direction of the working face according to the preset action, and at least part of the track 3 moves forward with the movement of the plurality of working face hydraulic supports 11. When all the working face hydraulic supports 11 reach the advancement position, the track 3 completes the advancement, specifically: When the coal cutter 10 cuts coal, the coal cutter 10 moves along the extension direction of the working face and cuts the coal wall of the working face; The hydraulic support 11 of the working face moves to the advancing position in sequence along the advancing direction of the working face to support the coal wall of the working face that has been cut; The hydraulic supports 11 of the working surface moving in sequence carry at least part of the first rail 31 forward, so that the rail 3 gradually approaches the advancing position; When all the hydraulic supports 11 on the working surface reach the advancing position, the track 3 completes the advancement at the same time.

[0028] Specifically, the first rail 31 is fixedly connected to the first mounting structure 4 , and the first mounting structure 4 is mounted on the top support plate of the working surface hydraulic support 11 . When the working surface hydraulic support 11 moves forward, it can carry the first rail 31 forward.

[0029] In the above working method, when the working surface hydraulic support 11 in the working module is pushed forward, the working surface hydraulic support 11 carries at least part of the first rail 31 forward, causing the first rail 31 to deform while the rail 3 moves forward as a whole.

[0030] In the working method of the coal mining face conveying system of this embodiment, the track 3 includes a second track 32 located at the advance support module 2, and the advance support module 2 moves along the advancement direction of the working face so that the advance support module 2 reaches the advancement position, including: Before the coal cutter 10 cuts coal, several advance support hydraulic supports 21 in the advance support module 2 move along the advancement direction of the working surface, and the second mounting structure 5 located on the top plate of the advance support module 2 slides relative to the second rail 32, so that the advance support module 2 reaches the advancement position before the second rail 32.

[0031] Specifically, the advance support module 2 includes a second mounting structure 5 located on the top plate of the advance support module 2, the second mounting structure 5 is used to install the second rail 32, the second mounting structure 5 is slidably connected to the second rail 32, and the second rail 32 located in the advance support module 2 can move relative to the advance support module 2, thereby reducing the relative friction between the rail 3 and the second mounting structure 5, so that the advance support module 2 reaches the advancement position before the second rail 32.

[0032] In the working method of the coal mining face conveying system of this embodiment, the track 3 includes a third track 33 located between the first track 31 and the second track 32, and the working face hydraulic support 11 that moves in sequence carries at least part of the first track 31 forward, so that the track 3 gradually approaches the advancing position, including: When the working surface hydraulic support 11 carries at least part of the first rail 31 and moves forward, the third rail 33 pushes the second rail 32 and the second mounting structure 5 to slide relative to each other, so that the rail 3 gradually approaches the advancing position.

[0033] Specifically, when the working surface hydraulic support 11 in the operation module is pushed forward, the first rail 31 is pushed to deform by the working surface hydraulic support 11, and then the second rail 32 is pushed forward by the third rail 33, so that the rail 3 moves forward as a whole and gradually approaches the advancement position.

[0034] The working method of the coal mining face conveying system of this embodiment also includes: Before the coal cutter 10 cuts coal, the guard plates 6 on the hydraulic supports 11 of the working faces are controlled to fold to avoid the coal cutter 10, and at the same time, the tensioning degree of the first tensioning component 41 and the second tensioning component 42 used to install the first rail 31 is changed to keep the first rail 31 in a relaxed state.

[0035] Specifically, the first mounting structure 4 includes: a first tensioning component 41, the first tensioning component 41 is located on the side of the track 3 away from the guard plate 6, one end of the first tensioning component 41 is hinged to the top plate of the operation module 1, and the other end of the first tensioning component 41 is hinged to the end of the track 3 located in the operation module 1; a second tensioning component 42, the second tensioning component 42 is located on the side of the track 3 close to the guard plate 6, one end of the second tensioning component 42 is hinged to the guard plate 6, and the other end of the second tensioning component 42 is hinged to the end of the track 3 located in the operation module 1, and the second tensioning component 42 is flexible; wherein the guard plate 6 is foldable. Through the above arrangement, as the guard plate 6 is unfolded or folded, the tensioning state of the second tensioning component 42 can be changed, thereby changing the tensioning state of the first tensioning component 41 and the second tensioning component 42 on the track 3, thereby changing the tensioning degree of the track 3, and avoiding the situation that the track 3 is easily broken when it is bent and deformed.

[0036] See also Figure 8 When the guard plate 6 is folded, the guard plate 6 flips to the side of the roof. At this time, the guard plate 6 is no longer used to support the coal wall, so as to avoid the coal cutter in the excavation state. In addition, the second tensioning component 42 is no longer tightened by the guard plate 6, and the second tensioning component 42 is in a relaxed state. At this time, only the first tensioning component 41 is pulled, and the track 3 is tightened by the first tensioning component 41. Therefore, in the pre-transportation state, the track 3 can remain in a relaxed state, allowing the track 3 to undergo a larger deformation, which facilitates the forward advancement of the operation module 1. When the track 3 is bent and deformed, it is avoided that the track 3 is easily broken when it is bent and deformed.

[0037] In the working method of this embodiment, the guard plate 6 is controlled to fold to avoid the coal cutter 10 and ensure the coal cutting work of the coal cutter. At the same time, the folding of the guard plate 6 can make the second tensioning component 42 no longer tightened by the guard plate 6. At this time, the track 3 is only tightened by the first tensioning component 41, and the track 3 is in a suspended state. The track 3 remains loose as a whole and can swing freely. When the track 3 is bent and deformed, the situation that the track 3 is easily broken when bending and deforming is avoided, so that the operation module 1 is convenient to move forward.

[0038] In the working method of the coal mining face conveying system of this embodiment, after the plurality of working face hydraulic supports 11 in the operation module 1 respectively move to the advancing position along the advancing direction of the working face according to the preset actions, the method further includes: The guard plate 6 is unfolded to support the coal wall of the working face after the cutting, and at the same time, the tensioning degree of the first tensioning component 41 and the second tensioning component 42 is changed to keep the first track 31 in a tensioned state.

[0039] In the working method of the coal mining face conveying system of the present embodiment, the guard plate 6 is controlled to be unfolded, which can not only support the coal wall, but also the first tensioning component 41 and the second tensioning component 42 are pulled in opposite directions respectively, so that the track 3 can be tightened, and the track 3 can be kept in a tensioned state. The tensioning of the track 3 is conducive to the conveying device passing through the track 3, thereby improving the conveying efficiency of the conveying device.

[0040] In the working method of the coal mining face conveying system of this embodiment, the tensioning degree of the first tensioning member 41 and the second tensioning member 42 is changed simultaneously, including: The side guard plate 6 is unfolded, and the side guard plate 6 tightens the second tensioning member 42 in a direction away from the first tensioning member 41 , so that the first tensioning member 41 and the second tensioning member 42 tighten the track 3 together. Specifically, see Figure 6 When the guard plate 6 is unfolded, the side of the guard plate 6 away from the hydraulic support is close to the coal wall. The guard plate 6 can not only be used to support the coal wall, but also the second tensioning component 42 is tightened by the guard plate 6, and the first tensioning component 41 and the second tensioning component 42 form a triangular connection structure. The first tensioning component 41 and the second tensioning component 42 are pulled in opposite directions respectively. At this time, the track 3 is tightened by the first tensioning component 41 and the second tensioning component 42. Therefore, in the conveying state, the track 3 can maintain a tensioned state. The tensioning of the track 3 is conducive to the conveying device passing through the track 3, thereby improving the conveying efficiency of the conveying device.

[0041] In the working method of the coal mining face conveying system of this embodiment, before the advance support module 2 moves along the advancing direction of the working face, it also includes: The conveying device 20 is moved along the track 3 into the advanced support module 2 to temporarily store the conveying device 20 .

[0042] In this way, when the coal cutter is excavating, the conveying device 20 can be temporarily stored in the advance support module 2 through the track 3 to avoid interfering with the coal cutting operation of the coal cutter.

[0043] The working method of the coal mining face conveying system of this embodiment also includes: When all the hydraulic supports 11 on the working surface reach the advancing position and the track 3 completes the advancing, the conveying device 20 is controlled to move along the track 3 to perform the conveying task.

[0044] Specifically, when all the hydraulic supports 11 on the working surface reach the advancing position and the track 3 completes the advancing, and all the hydraulic supports 11 on the working surface and the track 3 are in the same advancing position, ensure that all the guard plates 6 are unfolded to support the coal wall of the working surface. At this time, the conveying system is ready for transportation, and the conveying device 20 can be controlled to enter the working surface to perform transportation or maintenance tasks.

[0045] In some embodiments, see Figure 6-Figure 11 The specific process of the working method of the coal mining face conveying system is as follows: 1. See Figure 6 and Figure 7 , Figure 6 It is a schematic diagram of the conveying system in the conveying state. Figure 7 In the process, there is no relative movement between the track 3 and the slide 52, and the coal cutter 10 is not working. The side guard plate 6 of the hydraulic support is close to the coal wall of the roadway, the first tensioning component 41 and the second tensioning component 42 are in a tensioned state, and the two chains are hung in a triangle. The track 3 remains in a tensioned state, which can improve the stability of the track 3. The conveying system has the conditions for transportation. If the hydraulic support and other equipment need to be repaired, the conveying device 20 can run under the hydraulic support to realize the functions of transporting materials or repairing equipment, or transporting workers, so that materials and workers can reach the working surface directly.

[0046] 2. See Figure 8 , Figure 8 Schematic diagram of the conveying system in the pre-conveying state. When the coal cutter 10 is working, the conveying device 20 is not needed. The conveying device 20 can be moved to the advance support module 2 or even in front of the advance support module, away from the advance support and the working surface area, to prevent the coal production work from being affected. At this time, the guard plate 6 needs to be folded. If it is not folded, the rotating cutting knife of the coal cutter 10 will interfere with the guard plate 6. When the hydraulic guard plate 6 is folded, the monorail crane track appears as follows. Figure 8 In the state, the first tensioning member 41 is in a vertical state, the second tensioning member 42 is in a loose state, and the first track 31 is close to the side of the working surface hydraulic support 11, which will not affect the normal operation of the coal cutter 10. At this time, the conveying system does not have the conveying conditions.

[0047] 3. See Figure 9-11 , Fig.10 Schematic diagram of the conveying system in the second position of the pre-conveying state, see Fig. 9 When the coal cutter 10 has completed one operation along the working face tunnel (the tunnel length is, for example, 1000 meters), the coal cutter 10 stops working, the advance support module 2 moves forward, the conveying system switches to the pre-conveying state, the moving distance of the advance support module 2 is the single coal cutting thickness of the coal cutter (for example, 800-1000mm), the track 3 and the operation module 1 do not move synchronously with the advance support module 2, and the track 3 remains relatively motionless; then, see Fig.10 and Fig.11As the coal cutter 10 gradually moves along the working face tunnel, the working face hydraulic supports 11 move forward 800-1000 mm one by one and in sequence. The first track 31 in some areas is pushed by the working face hydraulic supports 11 to bend and deform. However, since the second tensioning component 42 is in a loose state, the first track 31 is allowed to have a larger deformation. As more working face hydraulic supports 11 move forward, the track 3 also gradually moves forward. When all the working face hydraulic supports 11 have completed the movement, the first track 31 returns to a straight state. At this time, the track 3, the advance support module 2 and the operation module 1 are in the same advancement position.

[0048] 4. See Figure 6 and Figure 7 When the above is completed, the conveying system enters the conveying state again. At this time, the guard plate 6 can be lowered again to make it close to the coal wall. The first tensioning component 41 and the second tensioning component 42 are in the tensioned state again, and the two chains are hung in a triangle. The conveying device 20 can run under the hydraulic support and can be used for maintenance or conveying materials. When the conveying device 20 is used, the coal cutter performs coal cutting operations again, and the guard plate 6 is folded again, and this cycle is repeated.

[0049] A coal mining face conveying system applies the above working method.

[0050] In the coal mining face conveying system of this embodiment, see Figure 1 , including: an operation module 1, the operation module 1 includes a plurality of working surface hydraulic supports 11 spaced apart along the extension direction of the working surface, and the operation module 1 is movably arranged along the advancement direction of the working surface; an advance support module 2, the advance support module 2 includes a plurality of advance support hydraulic supports 21 spaced apart along the advancement direction of the working surface, and the advance support module 2 is movably arranged along the advancement direction of the working surface; a conveying module, the conveying module includes a conveying device 20 and a track 3 for carrying the conveying device 20, the track 3 is continuously laid in the operation module 1 and the advance support module 2, the track 3 and the advance support module 2 are movably arranged relative to each other, the track 3 has a pre-conveying state and a conveying state connected to the operation module 1 and the advance support module 2, and as the advance support module 2 or the operation module 1 moves, the track 3 is switched between the pre-conveying state and the conveying state.

[0051] In some embodiments, the conveying device 20 includes but is not limited to equipment such as a monorail crane locomotive, and a first conveying space 71 for the conveying device 20 to pass through is provided inside the operation module 1 .

[0052] Specifically, the operation module 1 also accommodates a coal cutter 10 , and a plurality of working face hydraulic supports 11 are arranged corresponding to the coal cutter 10 .

[0053] It is understandable that when the coal cutter is excavating, the conveying device 20 can be temporarily stored in the advance support module 2 through the track 3.

[0054] Specifically, when the advance support module 2 advances forward, since the track 3 and the advance support module 2 are relatively movably arranged, the track 3 will not move synchronously with the advance support module 2, so that the advance support module 2 completes the forward advancement before the track 3 and the operating module 1. At this time, the conveying system switches to the pre-conveyance state, and the conveying device does not have the conditions for transportation. As the operating module 1 advances forward during the excavation process, the hydraulic supports 11 of each working face can gradually push the track 3 forward. As the working face completes the harvesting and all the hydraulic supports of the working face are pushed forward, the track 3 can also be pushed forward. At this time, the track 3 and the advance support module 2 and the operating module 1 are in the same advancement position, so that the track 3 returns to its position. At this time, the conveying system can have the conditions for transportation. At this time, the conveying system switches the conveying state, so that materials can be transported or the working face can be inspected.

[0055] Through the above arrangement, the track 3 and the advance support module 2 are relatively movably arranged, and the track 3 is a movable track. With the movement of the operating module 1 or the advance support module 2, the track 3 can flexibly adjust its position and change its shape as the working face advances. During the advancement process, the advance support module 2 completes the forward advancement before the track 3 and the operating module 1, and then with the gradual advancement of the operating module 1, the track 3 gradually completes the forward movement, avoiding many problems caused by directly moving the track 3, and switching the track 3 between the pre-transportation state and the transportation state, so that materials and workers can directly reach the working face, solving the technical problem in the related technology that materials and labor cannot directly reach the working face area in coal mining operations and transportation is difficult. In the coal mining face conveying system of this embodiment, see Figure 1 , the operation module 1 includes a first mounting structure 4 located on the top plate of the operation module 1, and the first mounting structure 4 is fixedly connected to the track 3 located in the operation module 1; the advance support module 2 includes a second mounting structure 5 located on the top plate of the advance support module 2, and the second mounting structure 5 is slidably connected to the track 3 located in the advance support module 2. Through the above arrangement, the first mounting structure 4 is used to install the track 3, and the second mounting structure 5 is used to install the track 3. The track 3 can move relative to the advance support module 2, thereby reducing the relative friction between the track 3 and the second mounting structure 5. As the hydraulic supports 11 of each working face move, the track 3 can be gradually pushed forward to match the excavation progress of the coal cutter.

[0056] It should be noted that the top plate of the operating module 1 or the top plate of the advance support module 2 is spliced ​​by the top support plates of several hydraulic supports, which are used to support the top surface of the tunnel and can move synchronously with several hydraulic supports.

[0057] In the coal mining face conveying system of this embodiment, see Figure 1 The track 3 includes: a first track 31, which is fixedly connected to the first mounting structure 4; a second track 32, which is slidably connected to the second mounting structure 5; and a third track 33, whose two ends are respectively connected to the first track 31 and the second track 32, wherein the third track 33 is arc-shaped. Through the above arrangement, when the working surface hydraulic support 11 in the operation module is pushed forward, the working surface hydraulic support 11 pushes the first track 31 to deform, and then the third track 33 pushes the second track 32 to move forward, so that the track 3 moves forward as a whole.

[0058] In the coal mining face conveying system of this embodiment, see Figure 2-3 The second mounting structure 5 includes: a connector 51, one end of which is provided with a roller 53, and the other end of which is fixedly connected to the track 3 in the advance support module 2, wherein the connector 51 includes a plurality of connectors 51, and the plurality of connectors 51 are arranged at intervals along the extension direction of the advance support module 2; a slide 52, the slide 52 is arranged on the top plate of the advance support module 2 along the extension direction of the advance support module 2, and the slide 52 contains a roller 53, and the roller 53 is slidably connected to the slide 52. The connector 51 is provided to hoist the track 3, and at the same time, the track 3 and the slide 52 can be slidably connected, so that the track 3 and the advance support module 2 can produce relative movement, and the relative friction between the track 3 and the second mounting structure 5 is reduced.

[0059] In the coal mining face conveying system of this embodiment, see Figure 2-3 The second mounting structure 5 includes a fixing member 54, one end of which is hinged to the end of the slide slot 52, and the other end of which is hinged to the top plate of the advanced support module 2, wherein the number of the fixing members 54 includes a plurality, and the plurality of fixing members 54 are spaced apart along the extension direction of the slide slot 52. Through the above arrangement, the slide slot 52 is fixed to the top plate.

[0060] In some embodiments, the fixing member 54 is a chain.

[0061] In some embodiments, fixed slide grooves are provided on both sides of the top of the track 3, and the second mounting structure 5 includes a fixed chain with a fixed pulley mounted at the end thereof, and the fixed pulley is slidably connected to the fixed slide groove.

[0062] In the coal mining face conveying system of this embodiment, see Figure 5 , Figure 6 , Figure 8The first mounting structure 4 includes: a first tensioning component 41, which is located on the side of the track 3 away from the guard plate 6, one end of the first tensioning component 41 is hinged to the top plate of the operation module 1, and the other end of the first tensioning component 41 is hinged to the end of the track 3 located in the operation module 1; a second tensioning component 42, which is located on the side of the track 3 close to the guard plate 6, one end of the second tensioning component 42 is hinged to the guard plate 6, and the other end of the second tensioning component 42 is hinged to the end of the track 3 located in the operation module 1, and the second tensioning component 42 is flexible; wherein the guard plate 6 is foldably arranged to change the tensioning state of the track 3 located in the operation module 1 in the pre-transport state or the transport state. Through the above arrangement, as the guard plate 6 is unfolded or folded, the tensioning state of the second tensioning component 42 can be changed, thereby changing the tensioning state of the track 3 by the first tensioning component 41 and the second tensioning component 42, thereby changing the tensioning degree of the track 3, and avoiding the situation that the track 3 is easily broken when it is bent and deformed. Specifically, see Figure 6 When the guard plate 6 is unfolded, the side of the guard plate 6 away from the hydraulic support is close to the coal wall. The guard plate 6 can not only be used to support the coal wall, but also the second tensioning component 42 is tightened by the guard plate 6, and the first tensioning component 41 and the second tensioning component 42 form a triangular connection structure. The first tensioning component 41 and the second tensioning component 42 are pulled in opposite directions respectively. At this time, the track 3 is tightened by the first tensioning component 41 and the second tensioning component 42. Therefore, in the conveying state, the track 3 can maintain a tensioned state. The tensioning of the track 3 is conducive to the conveying device passing through the track 3, thereby improving the conveying efficiency of the conveying device.

[0063] See also Figure 8 When the guard plate 6 is folded, the guard plate 6 flips to the side of the roof. At this time, the guard plate 6 is no longer used to support the coal wall, so as to avoid the coal cutter in the excavation state. In addition, the second tensioning component 42 is no longer tightened by the guard plate 6, and the second tensioning component 42 is in a relaxed state. At this time, only the first tensioning component 41 is pulled, and the track 3 is tightened by the first tensioning component 41. Therefore, in the pre-transportation state, the track 3 can remain in a relaxed state, allowing the track 3 to undergo a larger deformation, which facilitates the forward advancement of the operation module 1. When the track 3 is bent and deformed, it is avoided that the track 3 is easily broken when it is bent and deformed. To sum up, while supporting the coal seam, the guard plate 6 can also be used to tighten the second tensioning component 42, so that the track 3 remains in a tensioned state, thereby facilitating the passage of the conveying device; when the guard plate 6 is retracted to avoid the coal cutter 10, the second tensioning component 42 can remain in a loose state, thereby protecting the track 3. The conveying system in this embodiment is cleverly combined with the guard plate 6 in the traditional hydraulic support, so that the tensioning state of the track 3 matches the working state of the coal cutter 10, and there is no need to design and use an additional track tensioning structure, which simplifies the structure of the conveying system and achieves multiple goals at one stroke.

[0064] It can be understood that the first tensioning member 41 and the second tensioning member 42 are both chains, and the track 3 can swing back and forth along the advancing direction of the working surface.

[0065] In the coal mining face conveying system of this embodiment, see Figure 5 The guard plate 6 includes: a first guard plate 61, which is rotatably connected to the top plate of the operation module 1; and a second guard plate 62, which is rotatably connected to the first guard plate 61. The second guard plate 6 is provided with a mounting hole 63, and the second tensioning member 42 is hinged in the mounting hole 63. The mounting hole 63 is provided to hinge the second tensioning member 42.

[0066] It is understandable that multiple levels of side guard plates can be used according to actual needs, and the position of the mounting hole 63 can also be designed on other side guard plates according to actual needs.

[0067] In the coal mining face conveying system of this embodiment, see Figure 5 The first tensioning member 41 includes a plurality of first tensioning members 41 which are spaced apart along the extension direction of the operating module 1 ; and / or the second tensioning member 42 includes a plurality of second tensioning members 42 which are spaced apart along the extension direction of the operating module 1 .

[0068] Preferably, the second tensioning members 42 and the first tensioning members 41 are arranged in one-to-one correspondence, a rivet hole is arranged at the top end of the first rail 31, and the same group of second tensioning members 42 and first tensioning members 41 are connected to the same rivet hole.

[0069] In the coal mining face conveying system of this embodiment, see Figure 4The first track 31 or the second track 32 is composed of a plurality of track units 311. Both sides of the track unit 311 are provided with connecting plates 312 protruding from the track unit 311. The connecting plates 312 are provided with long holes 313. Two adjacent track units 311 are connected through the long holes 313 and the pins passing through the long holes 313. Through the above arrangement, the flexibility of the track 3 in movement and deformation can be increased. By adopting the form of mutual sleeve connection of single ear plates, the connection point of the track unit 311 does not have more reverse restrictions, so that the track 3 is easier and more flexible to deform, and the possibility of the track 3 being broken is prevented.

[0070] In the coal mining face conveying system of this embodiment, see Figure 2 A plurality of advance support hydraulic supports 21 are distributed in the advance support module 2 along the extension direction of the working surface to form an advance support hydraulic support row; wherein the advance support hydraulic support row includes two, and a second conveying space 72 for the conveying device 20 to pass through is formed between the two advance support hydraulic support rows. Through the above arrangement, the structural strength of the advance support module 2 is increased.

[0071] It can be understood that the first conveying space 71 and the second conveying space 72 are interconnected, so as to facilitate the reciprocating passage of the conveying device.

[0072] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0073] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0074] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0075] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0076] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A working method of a coal mining face conveying system, characterized in that: The coal mining face conveying system comprises an operation module (1), an advance support module (2) and a conveying module, wherein the conveying module comprises a conveying device (20) and a track (3) arranged in the advance support module (2) and the operation module (1) for realizing the conveying of the conveying device (20). The working method realized based on the coal mining face conveying system comprises: The advance support module (2) moves along the advancing direction of the working surface, so that the advance support module (2) reaches the advancing position; The plurality of working surface hydraulic supports (11) in the operation module (1) respectively move to the advancement position along the advancement direction of the working surface according to a preset action, and at least part of the track (3) moves forward along with the movement of the plurality of working surface hydraulic supports (11). When all the working surface hydraulic supports (11) reach the advancement position, the track (3) completes the advancement.

2. The working method of the coal mining face conveying system according to claim 1, characterized in that: The track (3) comprises a first track (31) located in the operation module (1), and a plurality of working surface hydraulic supports (11) in the operation module (1) respectively move to a propulsion position along a propulsion direction of the working surface according to a preset action, and at least part of the track (3) moves forward along with the movement of the plurality of working surface hydraulic supports (11), and when all the working surface hydraulic supports (11) reach the propulsion position, the track (3) completes the propulsion, specifically: When the coal cutter (10) cuts coal, the coal cutter (10) moves along the extension direction of the working face and cuts the coal wall of the working face; The working face hydraulic supports (11) move in sequence along the advancing direction of the working face to the advancing position to support the coal wall of the working face that has been cut; The working surface hydraulic supports (11) moving in sequence carry at least part of the first track (31) and advance forward, so that the track (3) gradually approaches the advancing position; When all the working surface hydraulic supports (11) reach the advancing position, the track (3) completes the advancement at the same time.

3. The working method of the coal mining face conveying system according to claim 2, characterized in that: The track (3) comprises a second track (32) located at the advance support module (2), and the advance support module (2) moves along the advancement direction of the working surface so that the advance support module (2) reaches the advancement position, comprising: Before the coal cutter (10) cuts coal, a plurality of advance support hydraulic supports (21) in the advance support module (2) move along the advancing direction of the working surface, and a second mounting structure (5) located on the top plate of the advance support module (2) slides relative to the second track (32), so that the advance support module (2) reaches the advancing position before the second track (32).

4. The working method of the coal mining face conveying system according to claim 3, characterized in that: The track (3) comprises a third track (33) located between the first track (31) and the second track (32), and the working surface hydraulic supports (11) moving in sequence carry at least part of the first track (31) and advance forward, so that the track (3) gradually approaches the advancing position, comprising: When the working surface hydraulic support (11) carries at least part of the first track (31) and moves forward, the second track (32) and the second mounting structure (5) are pushed by the third track (33) to slide relative to each other, so that the track (3) gradually approaches the advancing position.

5. The working method of the coal mining face conveying system according to claim 2, characterized in that: Also includes: Before the coal cutter (10) cuts coal, the guard plates (6) on the plurality of working surface hydraulic supports (11) are controlled to fold to avoid the coal cutter (10), and at the same time, the tensioning degrees of the first tensioning component (41) and the second tensioning component (42) used to install the first rail (31) are changed to keep the first rail (31) in a relaxed state.

6. The working method of the coal mining face conveying system according to claim 5, characterized in that: After the plurality of working surface hydraulic supports (11) in the operation module (1) respectively move to the advancing position along the advancing direction of the working surface according to preset actions, the method further comprises: The guard plate (6) is unfolded to support the coal wall of the working face that has been mined, and at the same time, the tensioning degree of the first tensioning component (41) and the second tensioning component (42) is changed to keep the first track (31) in a tensioned state.

7. The working method of the coal mining face conveying system according to claim 6, characterized in that: Simultaneously changing the tensioning degrees of the first tensioning component (41) and the second tensioning component (42), comprising: The side guard plate (6) is unfolded, and the side guard plate (6) tightens the second tensioning member (42) in a direction away from the first tensioning member (41), so that the first tensioning member (41) and the second tensioning member (42) jointly tighten the track (3).

8. The working method of the coal mining face conveying system according to claim 1, characterized in that: Before the advanced support module (2) moves along the advancing direction of the working face, it also includes: The conveying device (20) is moved along the track (3) into the advanced support module (2) to temporarily store the conveying device (20).

9. The working method of the coal mining face conveying system according to claim 8, characterized in that: Also includes: When all the working surface hydraulic supports (11) reach the advancing position and the track (3) completes the advancement, the conveying device (20) is controlled to move along the track (3) to perform the conveying task.

10. A coal mining face conveying system, characterized in that: The coal mining face conveying system applies the working method described in any one of claims 1 to 9.

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