Fully-mechanized coal mining face end mining net feeding process

Abstract

The invention relates to the field of mining mechanical equipment, and particularly discloses a fully mechanized coal mining face end mining net surfing technology which comprises the following steps: a scraper conveyor of a fully mechanized coal mining face is pulled to be empty, and a hydraulic support is used for supporting a coal mining face; the flexible net roll is conveyed to the machine head of the coal mining machine through a scraper conveyor; the flexible net roll is unwound, straightened and unfolded; the first edge in the width direction of the flexible net is lifted upwards through a net lifting assembly; the flexible net is fixed to a top plate of the coal mining face through anchor rods; the net lifting assembly lifts up the second side in the width direction of the flexible net, and coal cutting is started through the coal cutter; the net lifting assembly lowers the flexible net, the forward moving hydraulic support, the lifting hydraulic support and the net lifting are circulated in sequence; coal briquettes cut from the coal mining face are conveyed to the mine ground. According to the method, the safety and efficiency of end mining online construction are improved.

Description

Technical Field

[0001] The present application relates to the field of mining machinery and equipment, and in particular to a process for putting on the net at the end of a fully mechanized mining face. Background Art

[0002] At present, with the continuous improvement of mechanization, fully mechanized mining has become one of the main forms of modern coal mining production. However, when fully mechanized mining is nearing the end, that is, entering the so-called "final mining period", in order to ensure the stability of the surrounding rock of the tunnel and the smooth retreat of subsequent equipment, reliable temporary support measures must be taken to replace the original hydraulic support system.

[0003] In the related art, anchor rods are manually driven into one side close to the coal wall, steel wire ropes are hung, and metal mesh or plastic woven mesh is laid to form a covering layer, thereby reinforcing the top rock structure to prevent debris from falling and causing harm.

[0004] The above-mentioned related technologies have the following defects: there are great safety risks in the process of online construction, and safe construction is not guaranteed. In order to reduce construction risks, each time a section of online construction is carried out, a large amount of support work is required for that section of the mine, which makes the online construction time-consuming. Summary of the invention

[0005] In order to reduce construction risks and improve the construction efficiency of the last mining surface, the present application provides a last mining surface process for a comprehensive mining working face.

[0006] The present application provides a fully mechanized mining face end-of-mining online process that adopts the following technical solutions: A fully mechanized mining face end-of-mining net-laying process comprises the following steps: S1, emptying the scraper conveyor, emptying the scraper conveyor of the fully mechanized mining working face, and supporting the coal mining face of the fully mechanized mining working face by using the online system; S2, conveying the flexible mesh roll, using the scraper conveyor to convey the flexible mesh roll to the head of the coal mining machine; S3, straightening the flexible mesh roll, unwinding, straightening and unfolding the flexible mesh roll; S4, lifting the flexible net upward, the upper net system is away from the coal mining face, and the first side of the flexible net in the width direction is lifted upward; S5, fixing the flexible net by using anchor rods to fix the flexible net on the coal mining surface; S6, cutting coal, the upper net system lifts up the second side of the flexible net in the width direction, and uses the coal mining machine to cut coal at the coal mining face; S7, networking, constructing the next section of the flexible net in the mine, and connecting the two sections of the flexible net together; S8, cleaning coal blocks, and transporting the coal blocks cut from the coal mining surface to the surface of the mine.

[0007] By adopting the above technical solution, the flexible net is first laid on the coal mining surface. When the subsequent workers further construct the flexible net, the flexible net can play a protective role, greatly reducing the safety risks when the flexible net is subsequently lifted up and fixed. When the flexible net needs to be hung, the flexible net is lifted up by the online system, and then the flexible net is fixed on the coal mining surface by anchor rods. The flexible net can be hung on the coal mining surface quickly and accurately, which greatly improves the efficiency of online construction compared with the traditional method of first driving anchors and then hanging the net.

[0008] Preferably, the net-reaching system includes a hydraulic support, a net-lifting assembly and a net-lifting assembly, the hydraulic support is used to support the coal mining face; the net-lifting assembly and the net-lifting assembly are both installed on the hydraulic support; the net-lifting assembly is used to lift upward the first side of the flexible net in the width direction; the net-lifting assembly is used to lift upward the second side of the flexible net in the width direction.

[0009] By adopting the above technical solution, the hydraulic support not only provides stable support for the coal mining face in the mine, but also integrates the net lifting assembly and the net lifting assembly, so that the upper and lower sides of the flexible net can be accurately controlled, avoiding the risks and errors that may be caused by manual operation in traditional methods.

[0010] Preferably, the hydraulic support includes a base, a column, a top beam, a top guard plate and a guard plate, the top beam is arranged above the base; the top guard plate is installed on the top beam; one end of the column is hinged to the first end of the top beam, and the other end is hinged to the base; the first end of the guard plate is hinged to the second end of the top beam; the middle part of the top beam is connected to the base with a first hydraulic rod, and the top beam and the base are both hinged to the first hydraulic rod; the second end of the guard plate is connected to the top beam with a second hydraulic rod, and the guard plate and the top beam are both hinged to the second hydraulic rod.

[0011] By adopting the above technical solution, the first hydraulic rod is extended to make the top guard plate against the top support in the mine, and the second hydraulic rod is extended to make the guard plate against the coal mining surface, so that before the flexible net is lifted upward, the hydraulic support can support the mine. When it is necessary to lift the flexible net upward, the second hydraulic rod is shortened to retract the guard plate to prevent the guard plate from interfering with the upward lifting of the flexible net. Then the net lifting assembly lifts the flexible net upward so that the first side of the flexible net in the width direction enters between the guard plate and the coal mining surface. After the flexible net rises to the required height, the net lifting assembly stops running.

[0012] Preferably, the net lifting assembly comprises a first net hook, and the first net hook is installed on the top guard plate in a liftable manner.

[0013] By adopting the above technical solution, after the first hook hooks the first edge in the width direction of the flexible net, the first hook rises to lift the flexible net to a required height, so as to achieve height adjustment of the flexible net.

[0014] Preferably, the net lifting assembly further comprises a first rope and a first take-up wheel, wherein the first take-up wheel is rotatably connected to the top guard plate; one end of the first rope is connected to the first take-up wheel, and the other end is connected to the first net hook.

[0015] By adopting the above technical solution, the height adjustment of the first net hook is achieved by the first take-up wheel winding and unwinding the first rope.

[0016] Preferably, the second end of the top guard plate is provided with a receiving groove arranged toward the coal mining face, and a first pulley connected to the top guard plate is provided in the receiving groove, and the first rope is wound around the first pulley; the first net hook is located in the receiving groove; the first wire-taking wheel is installed on the lower end surface of the top guard plate; the net lifting assembly also includes a rope guide tube located between the first wire-taking wheel and the first pulley, one end of the rope guide tube is located in the receiving groove, and the other end is installed on the lower end surface of the top guard plate; the first rope passes through the rope guide tube.

[0017] By adopting the above technical solution, the design of the first pulley and the rope guide tube can effectively reduce the wear of the first rope and improve the stability and reliability of the system. The arrangement of the receiving groove allows the first net hook to be stored when not in operation, thus avoiding damage or interference caused by external factors and improving the safety of operation.

[0018] Preferably, the net lifting assembly includes a second net hook, a second pulley, a second rope and a second take-up wheel, the second pulley is installed in the middle of the lower end surface of the top guard plate; the second take-up wheel is rotatably connected to the base; one end of the second rope is connected to the second take-up wheel, and the other end is connected to the second net hook after passing around the second pulley.

[0019] By adopting the above technical solution, when the final mining is carried out, the second net hook hooks the lowermost edge of the flexible net, and the second take-up wheel rotates to reel up the lower end of the flexible net, so that the coal mining machine can mine coal on the coal mining surface. After the coal mining is completed, the second net hook puts down the flexible net, so that the flexible net is reset to continue to play a protective role.

[0020] Preferably, the anchor rod includes an inner washer, an outer washer and a screw rod, the inner washer is located between the flexible net and the coal mining face; the outer washer is located on the side of the flexible net away from the coal mining face; the screw rod is inserted into the coal mining face and is threadedly connected to the inner washer and the outer washer.

[0021] By adopting the above technical solution, the inner washer and the outer washer can effectively disperse the pressure of the anchor rod on the flexible net, avoiding damage to the flexible net due to excessive local pressure; at the same time, the firm connection between the screw and the coal mining face ensures that the flexible net will not loosen or fall off when under stress, thereby improving the safety and stability of the construction.

[0022] Preferably, a locking nut threadedly connected to the screw rod is provided on the side of the outer washer away from the coal mining face.

[0023] By adopting the above technical solution, the locking nut can effectively prevent the outer gasket from loosening, ensure that the flexible net is fixed more firmly and reliably, and improve the safety and stability of the comprehensive mining working face.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. In this application, the flexible net is first laid on the coal mining face. When subsequent workers further construct the flexible net, the flexible net can play a protective role, greatly reducing the safety risks when subsequently lifting the flexible net and fixing the flexible net.

[0025] 2. In this application, when the flexible net needs to be hung, the flexible net is lifted up by the hanging system and then fixed on the coal mining surface by anchor rods. The flexible net can be hung on the coal mining surface quickly and accurately, which greatly improves the efficiency of hanging the net construction compared with the traditional method of first driving anchors and then hanging the net.

[0026] 3. The application utilizes hydraulic supports and a specially designed net-laying system to quickly and accurately complete the laying and fixing of the flexible net, significantly improving construction efficiency and reducing a large amount of manual support work in traditional methods, thereby reducing construction time and cost.

[0027] 4. The net lifting component and net lifting component of the online system in this application can effectively control the position of the flexible net, ensure its stability in different operation stages, avoid safety hazards caused by human factors, and improve the safety and reliability of the overall construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the process of an embodiment of the present application; Figure 2This is a schematic diagram of the structure of the Internet access system in the mine; Figure 3 It is a schematic diagram of the structure of the Internet access system; Figure 4 is a schematic diagram of a front view of an Internet access system; Figure 5 yes Figure 4 Enlarged schematic diagram of part A.

[0030] Reference numerals: 1. Mine; 11. Coal mining face; 10. Online access system; 2. Hydraulic support; 21. Base; 22. Column; 23. Top beam; 24. Top guard plate; 2401. Receiving groove; 25. First hydraulic rod; 26. Guard plate; 27. Second hydraulic rod; 3. Net lifting assembly; 31. First net hook; 32. First pulley; 33. First rope; 34. First take-up wheel; 35. First servo motor; 36. Rope guide tube; 4. Net lifting assembly; 41. Second net hook; 42. Second pulley; 43. Second rope; 44. Second take-up wheel; 45. Second servo motor; 5. Flexible net; 6. Anchor rod; 61. Inner washer; 62. Outer washer; 63. Screw; 64. Locking nut. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1 —5 further describes this application in detail.

[0032] The embodiment of the present application discloses a process for putting on the net after the fully mechanized mining face is finished. Figure 1 , Figure 2 and Figure 3 , a fully mechanized mining face end-of-mining net-laying process, comprising the following steps: S1. Pull the scraper conveyor empty, pull the scraper conveyor of the fully mechanized mining face empty, and use the online system 10 to support the coal mining face 11 of the fully mechanized mining face. In this application, the online system 10 includes a hydraulic support 2, and the hydraulic support 2 is used to support the coal mining face 11. In the embodiment of this application, an online system 10 is set between 1.7m and 2m in the mine 1, and in order to prevent the occurrence of safety accidents, the coal mining machine and the hydraulic support 2 are both powered off and locked, and a special person is arranged to be responsible for guarding the locking device used for power off and locking to prevent accidental touch and cause safety accidents. The locking device here is the existing technology; S2, conveying 5 rolls of flexible net, and conveying 5 rolls of flexible net to the head of the coal mining machine by using a scraper conveyor. In the embodiment of the present application, the size of the 5 rolls of flexible net is 312m×13m; S3, straighten the flexible net 5 rolls, unwind the flexible net 5 rolls close to the coal mining surface 11 in the length direction of the mine 1, straighten them, and unfold them for use; S4, lift the flexible net 5 upward, retract the hydraulic support 2 of the online system 10 away from the coal mining face 11, and lift the first side of the flexible net 5 in the width direction upward, so that the flexible net 5 is raised to between the contact end of the hydraulic support 2 with the coal mining face 11 and the coal mining face 11. In order to realize the upward lifting of the flexible net 5, the online system 10 also includes a net lifting component 3, which is used to lift the first side of the flexible net 5 in the width direction upward. In the embodiment of the present application, the construction is carried out from the middle of the coal mining face 11 (taking the above-mentioned 312m flexible net 5, corresponding to about 170 online systems 10 as an example, the position is approximately near the No. 85 online system 10) to the head and tail of the coal mining machine. During the on-site construction, every 2-3 online systems 10 perform the net lifting operation from the middle of the coal mining face 11 to the head and tail of the coal mining machine, and the progress of the net lifting operation is determined according to the coal seam structure of the coal mining face 11. In case of a more dangerous complex structure section, 1-2 hydraulic supports 2 are retracted each time, and the progress of the net lifting is appropriately reduced. If a safer structural section is encountered, 5-6 or 7-8 hydraulic supports 2 can be retracted each time, and the net lifting progress can be accelerated at this time. In addition, before the coal mining machine body section is lifted, the flexible net 5 of the rear section of the body is first lifted, and then the coal mining machine is retreated more than one body distance before the operation is carried out; S5. Fix the flexible net 5, and use the anchor rods 6 to fix the flexible net 5 on the coal mining face 11. In the embodiment of the present application, after completing the net lifting operation of two adjacent hydraulic supports 2 and the coal mining there, the staff can be arranged to lower the adjacent hydraulic supports 2 and pull them out of the mine 1. During the pulling process, the flexible net 5 must be separated from the hydraulic supports 2 to avoid crowding. After the corresponding adjacent hydraulic supports 2 are pulled out, the top must be tightly connected to compact the flexible net 5, and then a special person is arranged to disconnect the connection between the net lifting assembly 3 and the flexible net 5, and so on, to complete the hanging operation of the flexible net 5. After completing the hanging operation of the flexible net 5 of more than 20 hydraulic supports 2, the anchor rods 6 can be constructed in accordance with the requirements of the safety technical measures for the end of mining, and so on, all the anchor rods 6 are constructed. In the prior art, the anchor rods 6 are the suspension fulcrums of the flexible net 5, and the required number is relatively large. In the present process, the anchor rods 6 are used to further strengthen the support and can be determined according to the coal seam structure. The required number of anchor rods 6 is reduced, which greatly reduces the cost and construction time of the anchor rods 6. S6, coal cutting, the online system 10 lifts up the second side of the flexible net 5 in the width direction, and uses the coal mining machine to cut coal at the coal mining face 11. The online system 10 also includes a net lifting component 4, which is used to lift up the second side of the flexible net 5 in the width direction. In the embodiment of the present application, when the net is hung on more than 20 hydraulic supports 2, if there are sufficient personnel, the net lifting component 4 can be arranged to lift up the flexible net 5. The height of the lifted flexible net 5 must be sufficient for the normal passage of the coal mining machine, and the flexible net 5 is lifted up in the coal mining operation area, and after the operation is completed, the flexible net 5 is put down; S7, networking, constructing the next section of flexible net 5 in the mine 1, and connecting the two sections of flexible net 5 together; S8, clean the coal blocks and transport the coal blocks cut from the coal mining face 11 to the ground of the mine 1.

[0033] Reference Figure 1 , Figure 2 and Figure 3 In the implementation mode of the present application, the flexible net 5 is first laid on the coal mining face 11. When the subsequent staff further constructs the flexible net 5, the flexible net 5 can play a protective role, which greatly reduces the safety risks of subsequently lifting the flexible net 5 and fixing the flexible net 5. When the flexible net 5 needs to be hung, the flexible net 5 is lifted up by the online system 10, and then the flexible net 5 is fixed on the coal mining face 11 by the anchor rod 6. The flexible net 5 can be hung on the coal mining face 11 quickly and accurately. Compared with the traditional method of first driving anchor nails and then hanging the net, the efficiency of online construction is greatly improved. Taking the above-mentioned flexible net 5 of about 312m in length as an example, the traditional construction process takes 7-9 days. The online construction process of this scheme can be reduced to within 24 hours, which greatly improves the efficiency of online construction.

[0034] Reference Figure 3 , Figure 4 and Figure 5 The net-raising system 10 includes a hydraulic support 2, a net-lifting assembly 3 and a net-lifting assembly 4. The hydraulic support 2 is used to support the coal mining face 11; the net-lifting assembly 3 and the net-lifting assembly 4 are both installed on the hydraulic support 2; the net-lifting assembly 3 is used to lift the first side of the flexible net 5 in the width direction upward; the net-lifting assembly 4 is used to lift the second side of the flexible net 5 in the width direction upward. In the embodiment of the present application, the hydraulic support 2 not only stably supports the coal mining face 11 of the mine 1, but also integrates the net-lifting assembly 3 and the net-lifting assembly 4, so that the upper and lower sides of the flexible net 5 can be accurately controlled, avoiding the risks and errors that may be caused by manual operation in traditional methods.

[0035] Reference Figure 3 , Figure 4 and Figure 5The hydraulic support 2 includes a base 21, a column 22, a top beam 23, a top guard plate 24 and a guard plate 26. The top beam 23 is arranged above the base 21; the top guard plate 24 is installed on the top beam 23; one end of the column 22 is hinged to the first end of the top beam 23, and the other end is hinged to the base 21; the first end of the guard plate 26 is hinged to the second end of the top beam 23; the middle part of the top beam 23 is connected to the base 21 with a first hydraulic rod 25, and the top beam 23 and the base 21 are both hinged to the first hydraulic rod 25; the second end of the guard plate 26 is connected to the top beam 23 with a second hydraulic rod 27, and the guard plate 26 and the top beam 23 are both hinged to the second hydraulic rod 27. In the embodiment of the present application, by extending the first hydraulic rod 25, the top guard plate 24 can be raised to resist the top support in the mine 1. The top support here is a conventional support structure set in the mine 1 during comprehensive mining, and the top support is not shown in the drawings of the present application specification. By extending the second hydraulic rod 27, the guard plate 26 can be moved toward the coal mining face 11 until the guard plate 26 is against the coal mining face 11, and then before the flexible net 5 is lifted upward, the hydraulic support 2 can support the mine 1. When it is necessary to lift the flexible net 5 upward, the second hydraulic rod 27 is shortened to retract the guard plate 26 to prevent the guard plate 26 from interfering with the upward lifting of the flexible net 5. Then the net lifting assembly 3 lifts the flexible net 5 upward so that the first side of the flexible net 5 in the width direction enters between the guard plate 26 and the coal mining face 11. After the flexible net 5 rises to the required height, the net lifting assembly 3 stops running. When it is necessary to remove the hydraulic support 2, the first hydraulic rod 25 and the second hydraulic rod 27 are shortened to lower the hydraulic support 2 as a whole and retract the guard plate 26 to facilitate the removal of the hydraulic support 2.

[0036] Reference Figure 3 , Figure 4 and Figure 5 The net lifting assembly 3 includes a first net hook 31, which is installed on the top guard plate 24 in a liftable manner. In the embodiment of the present application, after the first net hook 31 hooks the first edge of the flexible net 5 in the width direction, the first net hook 31 rises to lift the flexible net 5 to a desired height, so as to achieve height adjustment of the flexible net 5.

[0037] Reference Figure 3 , Figure 4 and Figure 5 The net lifting assembly 3 further includes a first rope 33 and a first take-up wheel 34, wherein the first take-up wheel 34 is rotatably connected to the top guard plate 24; one end of the first rope 33 is connected to the first take-up wheel 34, and the other end is connected to the first net hook 31. In the embodiment of the present application, the height of the first net hook 31 is adjusted by the first take-up wheel 34 winding and unwinding the first rope 33.

[0038] Reference Figure 3 , Figure 4 and Figure 5The second end of the top guard plate 24 is provided with a receiving groove 2401 arranged toward the coal mining face 11, and a first pulley 32 connected to the top guard plate 24 is arranged in the receiving groove 2401, and a first rope 33 is wound around the first pulley 32; the first net hook 31 is located in the receiving groove 2401; the first wire reel 34 is installed on the lower end surface of the top guard plate 24; the net lifting assembly 3 also includes a rope guide tube 36 located between the first wire reel 34 and the first pulley 32, one end of the rope guide tube 36 is located in the receiving groove 2401, and the other end is installed on the lower end surface of the top guard plate 24; the first rope 33 passes through the rope guide tube 36. In the embodiment of the present application, the design of the first pulley 32 and the rope guide tube 36 can effectively reduce the wear of the first rope 33 and improve the stability and reliability of the system. The setting of the receiving groove 2401 allows the first net hook 31 to be stored in a non-working state, avoiding damage or interference caused by external factors, and improving the safety of operation.

[0039] Reference Figure 3 , Figure 4 and Figure 5 The net lifting assembly 4 includes a second net hook 41, a second pulley 42, a second rope 43 and a second take-up wheel 44. The second pulley 42 is installed in the middle of the lower end surface of the top guard plate 24; the second take-up wheel 44 is rotatably connected to the base 21; one end of the second rope 43 is connected to the second take-up wheel 44, and the other end is connected to the second net hook 41 after passing the second pulley 42. In the embodiment of the present application, when the end of mining is being carried out, the second net hook 41 hooks the lowermost edge of the flexible net 5, and the second take-up wheel 44 is wound and rotated, so that the lower end of the flexible net 5 is lifted up, thereby facilitating the coal mining machine to mine coal on the coal mining face 11. After the coal mining is completed, the second net hook 41 puts down the flexible net 5, so that the flexible net 5 is reset and continues to play a protective role.

[0040] Reference Figure 3 , Figure 4 and Figure 5 The anchor rod 6 includes an inner washer 61, an outer washer 62 and a screw 63. The inner washer 61 is located between the flexible net 5 and the coal mining face 11; the outer washer 62 is located on the side of the flexible net 5 away from the coal mining face 11; the screw 63 is inserted into the coal mining face 11 and is screwed with the inner washer 61 and the outer washer 62. In the embodiment of the present application, the inner washer 61 and the outer washer 62 can effectively disperse the pressure of the anchor rod 6 on the flexible net 5, avoiding damage to the flexible net 5 due to excessive local pressure; at the same time, the stable connection between the screw 63 and the coal mining face 11 ensures that the flexible net 5 will not loosen or fall off when subjected to force, thereby improving the safety and stability of the construction.

[0041] Reference Figure 3 , Figure 4 and Figure 5A locking nut 64 is provided on the side of the outer washer 62 away from the coal mining face 11 and is screwed to the screw rod 63. In the embodiment of the present application, the locking nut 64 can effectively prevent the outer washer 62 from loosening, ensure that the flexible net 5 is fixed more firmly and reliably, and improve the safety and stability of the fully mechanized mining face.

[0042] The implementation principle of the unmined net-laying process of a fully-mechanized mining face in the embodiment of the present application is as follows: the scraper conveyor of the fully-mechanized mining face is emptied, and the hydraulic support 2 is used to support the fully-mechanized mining face. The flexible net 5 is rolled up and transported to the head of the coal mining machine by the scraper conveyor. The flexible net 5 is unrolled, straightened, and unfolded. The net-lifting assembly 3 lifts the first side of the flexible net 5 in the width direction upward. The flexible net 5 is fixed to the coal mining face 11 by the anchor rod 6. The net-lifting assembly 4 lifts the second side of the flexible net 5 in the width direction upward, and the coal is cut at the coal mining face 11 by the coal mining machine. The net-lifting assembly 4 puts the flexible net 5, moves the hydraulic support 2 to the next section of the net-laying construction area of ​​the mine 1, and tightens the hydraulic support 2. The next section of the flexible net 5 is constructed in the mine 1, and the two sections of the flexible net 5 are connected together. The coal blocks cut from the coal mining face 11 are transported to the ground outside the mine 1.

[0043] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] The above are all optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fully mechanized mining face net-laying process, characterized in that: The steps include: S1, emptying the scraper conveyor, emptying the scraper conveyor of the fully mechanized mining working face, and using an online system (10) to support the coal mining face (11) of the fully mechanized mining working face; S2, conveying the flexible net (5) roll, using the scraper conveyor to convey the flexible net (5) roll to the head of the coal mining machine; S3, straightening the flexible net (5) by rolling it, unrolling the flexible net (5), straightening it, and unfolding it; S4, lifting the flexible net (5) upwards, the net-reaching system (10) is away from the coal mining face (11), and a first side of the flexible net (5) in a width direction is lifted upwards; S5, fixing the flexible net (5), using anchor rods (6) to fix the flexible net (5) on the coal mining surface (11); S6, cutting coal, the upper net system (10) lifts up the second side of the flexible net (5) in the width direction, and uses the coal mining machine to cut coal on the coal mining face (11); S7, networking, constructing the next section of the flexible net (5) in the mine (1), and connecting the two sections of the flexible net (5) together; S8. Clean the coal blocks and transport the coal blocks cut from the coal mining surface (11) to the surface of the mine (1).

2. A fully mechanized mining face net-laying process according to claim 1, characterized in that: The net-reaching system (10) comprises a hydraulic support (2), a net-lifting assembly (3) and a net-lifting assembly (4); the hydraulic support (2) is used to support the coal mining face (11); the net-lifting assembly (3) and the net-lifting assembly (4) are both mounted on the hydraulic support (2); The net lifting assembly (3) is used to lift the first edge of the flexible net (5) in the width direction upwards; The net lifting component (4) is used to lift the second edge of the flexible net (5) in the width direction upwards.

3. A fully mechanized mining face net-laying process according to claim 2, characterized in that: The hydraulic support (2) comprises a base (21), a column (22), a top beam (23), a top guard plate (24) and a side guard plate (26); the top beam (23) is arranged above the base (21); the top guard plate (24) is mounted on the top beam (23); one end of the column (22) is hinged to a first end of the top beam (23), and the other end is hinged to the base (21); the first end of the side guard plate (26) is hinged to a second end of the top beam (23); A first hydraulic rod (25) is connected to the middle portion of the top beam (23) and the base (21); the top beam (23) and the base (21) are both hingedly connected to the first hydraulic rod (25); The second end of the side guard plate (26) and the top beam (23) are connected to a second hydraulic rod (27), and both the side guard plate (26) and the top beam (23) are hinged to the second hydraulic rod (27).

4. A fully mechanized mining face net-laying process according to claim 3, characterized in that: The net lifting assembly (3) comprises a first net hook (31), and the first net hook (31) is mounted on the top guard plate (24) in a liftable manner.

5. A fully mechanized mining face net-laying process according to claim 4, characterized in that: The net lifting assembly (3) further comprises a first rope (33) and a first take-up wheel (34), wherein the first take-up wheel (34) is rotatably connected to the top guard plate (24); one end of the first rope (33) is connected to the first take-up wheel (34), and the other end is connected to the first net hook (31).

6. A process for putting on the net at the end of fully mechanized mining face according to claim 5, characterized in that: The second end of the top guard plate (24) is provided with a receiving groove (2401) arranged toward the coal mining face (11); a first pulley (32) connected to the top guard plate (24) is provided in the receiving groove (2401); the first rope (33) is wound around the first pulley (32); the first net hook (31) is located in the receiving groove (2401); The first wire-taking wheel (34) is mounted on the lower end surface of the top guard plate (24); the net lifting assembly (3) further comprises a rope guide tube (36) located between the first wire-taking wheel (34) and the first pulley (32); one end of the rope guide tube (36) is located in the accommodating groove (2401), and the other end is mounted on the lower end surface of the top guard plate (24); the first rope (33) passes through the rope guide tube (36).

7. A fully mechanized mining face net-laying process according to claim 6, characterized in that: The net lifting assembly (4) comprises a second net hook (41), a second pulley (42), a second rope (43) and a second take-up wheel (44); the second pulley (42) is mounted on the middle part of the lower end surface of the top guard plate (24); the second take-up wheel (44) is rotatably connected to the base (21); one end of the second rope (43) is connected to the second take-up wheel (44), and the other end is connected to the second net hook (41) after passing through the second pulley (42).

8. The process for putting on the net at the end of fully mechanized mining face according to claim 1 is characterized by: The anchor rod (6) comprises an inner washer (61), an outer washer (62) and a screw rod (63); the inner washer (61) is located between the flexible net (5) and the coal mining face (11); the outer washer (62) is located on a side of the flexible net (5) away from the coal mining face (11); the screw rod (63) is inserted into the coal mining face (11) and is screwed to the inner washer (61) and the outer washer (62).

9. A fully mechanized mining face net-laying process according to claim 8, characterized in that: A locking nut (64) threadedly connected to the screw rod (63) is provided on a side of the outer washer (62) away from the coal mining face (11).

Images