Mine field underground roadway gangue filling device

Abstract

The invention relates to the technical field of gangue filling, in particular to a mine field underground roadway gangue filling device which comprises a supporting bottom plate, a dual-purpose mechanism, a jacking mechanism, an intermittent meshing mechanism and a locking mechanism, the outer wall of the bottom of the supporting bottom plate is fixedly connected with a traveling track assembly, and the outer wall of the top of the supporting bottom plate is fixedly connected with a supporting vertical plate. A second hydraulic cylinder is fixedly connected to the outer wall of the supporting vertical plate, and a tamping main plate is fixedly connected to the outer wall of the second hydraulic cylinder. Through the intermittent meshing mechanism, when the jacking mechanism stretches out for the first time, the intermittent meshing mechanism is not driven, the uppermost layer of the goaf is completely filled with the gangue in the filling frame, the transverse force better promotes reduction of gaps between the gangue, meanwhile, the intermittent meshing mechanism is in linkage with the locking mechanism to lock the height and the position of the filling frame, and therefore the filling frame is locked. And the gangue filling stability is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of gangue filling, and in particular to a gangue filling device for an underground tunnel in a mine. Background Art

[0002] With the large-scale development and utilization of coal resources, while bringing huge economic benefits to society, it is also accompanied by a series of negative impacts on the ecological environment of the mining area. Underground mining causes the coal seam roof to collapse, resulting in the ground falling and forming subsidence. As a geological disaster, subsidence is the most important way to destroy the ecological environment during coal production and mining. In addition, the gangue produced by coal mining accumulates on the ground, which not only occupies the surface area, but also brings great harm to the human living environment. At present, the filling mining technology mainly includes solid filling and paste filling technology. Solid filling is mainly transported to the filling conveyor by conveying equipment. The unloading hole fills the filling material into the goaf, and then the filling material is compacted by the tamping device to achieve the effect of controlling the movement of rock formations and ground collapse.

[0003] The patent with publication number CN118836043A discloses a coal mine raw gangue filling and tamping device and tamping method, including: a base, a support vertical plate fixedly provided on the top of the base, an adjustment plate provided on one side of the support vertical plate, a movable plate provided at one end of the adjustment plate, a movable groove provided inside the movable plate, a first tamping plate fixedly provided at one end of the movable plate, the bottom end of the first tamping plate is a curved surface, and two first hydraulic cylinders are fixedly provided at the other end of the movable plate.

[0004] However, the above-mentioned coal mine primary gangue filling and tamping device and tamping method still have some shortcomings in actual use: 1. The height adjustment mechanism drives the first tamping plate to move up and down, drives the gangue that collapses downward to the top, and then compacts it. When the tamping plate moves up, there is no object blocking the gangue below, and the gangue will continue to slide down. Since the bottom surface of the tamping plate is arc-shaped, it is very easy to squeeze the gangue that has just slid down after the tamping plate moves down;

[0005] 2. In the prior art, since the discharge hole itself is located at the top of the goaf, when the discharge hole is moved away, the prior art pushes the gangue to the top of the goaf through the tilted hydraulic cylinder that continuously reciprocates and contracts. The amount of gangue pushed up each time is limited, and the inclined compaction sometimes makes the gangue not squeezed tightly enough, so filling the top layer of the goaf is the most difficult, so it is proposed to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the background technology and to propose a gangue filling device for underground mine tunnels.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A gangue filling device for underground mine tunnels, comprising a supporting bottom plate, a traveling crawler assembly fixedly connected to the bottom outer wall of the supporting bottom plate, a supporting vertical plate fixedly connected to the top outer wall of the supporting bottom plate, a second hydraulic cylinder fixedly connected to the outer wall of the supporting vertical plate, a compacting main plate fixedly connected to the outer wall of the second hydraulic cylinder, a mounting plate fixedly connected to the outer wall of the supporting vertical plate, a filling frame arranged above the mounting plate, and further comprising:

[0009] A dual-purpose mechanism, used for adding gangue, and also for filling and compacting the topmost layer of the goaf, the dual-purpose mechanism being mounted on the supporting vertical plate;

[0010] A lifting mechanism, used to deliver the gangue in the filling frame to the uppermost layer of the goaf at one time in coordination with the retraction of the lifting mechanism, wherein the lifting mechanism is installed on the supporting vertical plate;

[0011] An intermittent meshing mechanism, which is used for not driving the jacking mechanism when the dual-purpose mechanism is initially extended, but pushing the gangue in the filling frame into the uppermost layer of the goaf, and the intermittent meshing mechanism is installed on the supporting vertical plate;

[0012] The locking mechanism is used to lock the height and position of the filling frame when the dual-purpose mechanism does not drive the lifting mechanism, so as to ensure the stability of gangue filling, and the locking mechanism is installed on the lifting mechanism.

[0013] Preferably, the dual-purpose mechanism includes a first hydraulic cylinder, a discharge pipe, an electromagnet, a connecting port and a discharge port, the discharge pipe is slidably connected to the support vertical plate, the first hydraulic cylinder is fixedly connected to the support vertical plate, the first hydraulic cylinder is fixedly connected to the electromagnet, the electromagnet is fixedly connected to the discharge pipe, and the discharge port is fixedly connected to the discharge pipe.

[0014] Preferably, the inner wall of the filling frame is slidably connected to an electromagnetic plate, the inner wall of the tamping main board is rotatably connected to a first shaft rod, the outer wall of the first shaft rod is fixedly connected to a tamping support plate, the outer walls on both sides of the tamping support plate are fixedly connected to first springs, and the ends of the two first springs away from the tamping support plate are fixedly connected to the mounting plate.

[0015] Preferably, the lifting mechanism includes a lower rack, an upper rack, a first gear, a second shaft rod and two mounting brackets, the outer wall of the discharge pipe is fixedly connected with a plurality of slide rails 2, the upper rack is slidably connected to the outer wall of the discharge pipe through the plurality of slide rails 2, the two mounting brackets are fixedly connected to the support vertical plate, the second shaft rod is rotatably connected to the two mounting brackets, the first gear is fixedly connected to the second shaft rod, the upper rack is meshed with the outer wall of the first gear, the first gear is meshed with the outer wall of the lower rack, and the lower rack is slidably connected to the outer wall of the support vertical plate.

[0016] Preferably, the lifting mechanism also includes slide bar 2, slide bar 1 and slide rail 1, slide bar 2 is fixedly connected to the filling frame, slide bar 2 is slidably connected to the end of the lower rack, slide bar 1 is fixedly connected to slide bar 2, slide bar 1 is slidably connected to slide rail 1, and the two ends of slide rail 1 are respectively fixedly connected to the mounting plate and the supporting vertical plate.

[0017] Preferably, the intermittent meshing mechanism includes a limiting slide rail, a connecting rod three and a slider, the limiting slide rail is fixedly connected to the supporting vertical plate, the slider is slidably connected to the limiting slide rail, the connecting rod three is fixedly connected to the slider, the other end of the connecting rod three is fixedly connected to the upper rack, the outer wall of the limiting slide rail is fixedly connected to the limiting plate, and the outer wall of the limiting slide rail is rotatably connected to a one-way plate.

[0018] Preferably, the inner wall of the support vertical plate is fixedly connected with a mounting rod 2, a second push plate is arranged above the limiting slide rail, a plurality of pressure springs 1 are fixedly connected between the mounting rod 2 and the second push plate, a plurality of positioning rods 1 are fixedly connected to the outer wall of the second push plate, the plurality of positioning rods 1 are all slidably connected to the mounting rod 2, a connecting rod 1 is fixedly connected to the outer wall of the support vertical plate, a positioning rod 2 is slidably connected to the outer wall of the connecting rod 1, the first push plate is fixedly connected to the end of the positioning rod 2, and a pressure spring 2 is fixedly connected between the first push plate and the connecting rod 1.

[0019] Preferably, the locking mechanism comprises a locking block, a second slide groove and a third slide rod, the locking block is slidably connected to the two mounting frames, the third slide rod is fixedly connected to the locking block, and the locking block is slidably connected to the upper rack via the second slide groove.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention enables the jacking mechanism to deliver the gangue to the uppermost layer of the goaf at one time by retracting the first hydraulic cylinder. The intermittent meshing mechanism will not be driven when the jacking mechanism is extended for the first time, but the gangue in the filling frame will be completely filled to the uppermost layer of the goaf. The lateral force better promotes the reduction of the gaps between the gangue. At the same time, the intermittent meshing mechanism is linked with the locking mechanism to lock the height and position of the filling frame, thereby ensuring the stability of the gangue filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 3 The present invention Figure 2A schematic diagram of the partially enlarged structure at center A;

[0025] Figure 4 It is a schematic diagram of the structure of the present invention after removing part of the filling frame;

[0026] Figure 5 It is a partial structural schematic diagram of the intermittent meshing mechanism of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the intermittent meshing mechanism and the locking mechanism of the present invention;

[0028] Figure 7 It is a schematic structural diagram of the positional relationship between the connecting rod 3, the first push plate and the second push plate of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the limiting slide rail of the present invention;

[0030] Fig. 9 The present invention Figure 8 Schematic diagram of the local enlarged structure at point B in the middle.

[0031] In the figure: 1, traveling crawler assembly; 2, supporting bottom plate; 3, supporting vertical plate; 4, lower rack; 5, first hydraulic cylinder; 6, electromagnetic plate; 7, filling frame; 8, feeding tube; 9, tamping support plate; 10, tamping main board; 11, second hydraulic cylinder; 12, electromagnet; 13, connecting port; 14, mounting frame; 15, mounting plate; 16, slide bar 1; 17, slide rail 1; 18, first gear; 19, first spring; 20, upper rack; 21, slide rail 2; 22, first shaft rod; 23, slide bar 2; 24, Connecting rod one; 25, feeding port; 26, locking block; 27, slide groove two; 28, slide rod three; 29, second shaft rod; 30, first push plate; 31, limit slide rail; 32, positioning rod one; 33, mounting rod two; 34, pressure spring one; 35, second push plate; 36, connecting rod three; 37, positioning rod two; 38, pressure spring two; 39, slider; 40, limit plate; 41, one-way plate; 101, lifting mechanism; 202, intermittent meshing mechanism; 303, dual-purpose mechanism; 404, locking mechanism. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Reference Figure 1-Figure 9 A gangue filling device for underground mine tunnels includes a supporting bottom plate 2, a traveling crawler assembly 1 is fixedly connected to the bottom outer wall of the supporting bottom plate 2, a supporting vertical plate 3 is fixedly connected to the top outer wall of the supporting bottom plate 2, a second hydraulic cylinder 11 is fixedly connected to the outer wall of the supporting vertical plate 3, a compacting main plate 10 is fixedly connected to the outer wall of the second hydraulic cylinder 11, a mounting plate 15 is fixedly connected to the outer wall of the supporting vertical plate 3, a filling frame 7 is arranged above the mounting plate 15, and also includes:

[0035] The dual-purpose mechanism 303 is used to add gangue and can also be used to fill and compact the top layer of the goaf. The dual-purpose mechanism 303 is installed on the supporting vertical plate 3;

[0036] The jacking mechanism 101 is used to deliver the gangue in the filling frame 7 to the uppermost layer of the goaf at one time in coordination with the retraction of the jacking mechanism 101. The jacking mechanism 101 is installed on the supporting vertical plate 3.

[0037] The intermittent meshing mechanism 202 is used to not drive the lifting mechanism 101 when the dual-purpose mechanism 303 is initially extended, but to push the gangue in the filling frame 7 into the uppermost layer of the goaf. The intermittent meshing mechanism 202 is installed on the supporting vertical plate 3;

[0038] The locking mechanism 404 is used to lock the height and position of the filling frame 7 when the dual-purpose mechanism 303 does not drive the lifting mechanism 101 to ensure the stability of the gangue filling. The locking mechanism 404 is installed on the lifting mechanism 101.

[0039] Among them, the dual-purpose mechanism 303 includes a first hydraulic cylinder 5, a discharge pipe 8, an electromagnet 12, a connecting port 13 and a discharge port 25. The discharge pipe 8 is slidingly connected to the support vertical plate 3, the first hydraulic cylinder 5 is fixedly connected to the support vertical plate 3, the first hydraulic cylinder 5 is fixedly connected to the electromagnet 12, the electromagnet 12 is fixedly connected to the discharge pipe 8, and the discharge port 25 is fixedly connected to the discharge pipe 8.

[0040] In this embodiment, the connecting port 13 is connected to the gangue conveying pipe so that the gangue enters the discharge pipe 8 and then falls through the discharge port 25. The gangue falls between the compaction main board 10 and the goaf. The range of each section of filled gangue is set to be smaller than the distance between the electromagnetic plate 6 and the compaction main board 10. The initial filling of gangue needs to fill two lengths. After the height of the first section of gangue is the same as the compaction support plate 9, the traveling crawler assembly 1 drives the device to move and start filling the second section of gangue. After the height of the second section of gangue is the same as the compaction main board 10, the two sections of gangue are approximately stepped or inclined at this time, and the compaction main board 10 continuously expands and contracts to make the gap between the gangue smaller and smaller.

[0041] Among them, the inner wall of the filling frame 7 is slidably connected to the electromagnetic plate 6, the inner wall of the tamping main board 10 is rotatably connected to the first shaft rod 22, the outer wall of the first shaft rod 22 is fixedly connected to the tamping support plate 9, and the outer walls on both sides of the tamping support plate 9 are fixedly connected to the first springs 19, and the ends of the two first springs 19 away from the tamping support plate 9 are fixedly connected to the mounting plate 15.

[0042] Among them, the jacking mechanism 101 includes a lower rack 4, an upper rack 20, a first gear 18, a second shaft rod 29 and two mounting frames 14. The outer wall of the discharge pipe 8 is fixedly connected with a plurality of slide rails 21. The upper rack 20 is slidably connected to the outer wall of the discharge pipe 8 through the plurality of slide rails 21. The two mounting frames 14 are fixedly connected to the support vertical plate 3. The second shaft rod 29 is rotatably connected to the two mounting frames 14. The first gear 18 is fixedly connected to the second shaft rod 29. The upper rack 20 is meshed with the outer wall of the first gear 18. The first gear 18 is meshed with the outer wall of the lower rack 4. The lower rack 4 is slidably connected to the outer wall of the support vertical plate 3.

[0043] Among them, the lifting mechanism 101 also includes a slide bar 23, a slide bar 16 and a slide rail 17. The slide bar 23 is fixedly connected to the filling frame 7, the slide bar 23 is slidably connected to the end of the lower rack 4, the slide bar 16 is fixedly connected to the slide bar 23, the slide bar 16 is slidably connected to the slide rail 17, and the two ends of the slide rail 17 are respectively fixedly connected to the mounting plate 15 and the supporting vertical plate 3.

[0044] 1 and 16 are moved along the upper rack 20 and the lower gear 18. When the lower rack 4 is engaged, the lower gear 18 is moved along the lower gear 18. When the lower rack 4 is engaged, the lower gear 18 is moved along the lower gear 18. When the lower rack 4 is engaged, the lower gear 18 is moved along the lower gear 18. When the lower rack 4 is engaged, the lower gear 18 is moved along the lower gear 18. When the lower rack 4 is engaged, the lower gear 18 is moved along the lower gear 18. When the lower rack 4 is engaged, the lower gear 18 is moved along the lower gear 18. Figure 8 The AA segment in the moving.

[0045] Among them, the intermittent meshing mechanism 202 includes a limiting slide rail 31, a connecting rod three 36 and a slider 39. The limiting slide rail 31 is fixedly connected to the supporting vertical plate 3, the slider 39 is slidably connected to the limiting slide rail 31, the connecting rod three 36 is fixedly connected to the slider 39, the other end of the connecting rod three 36 is fixedly connected to the upper rack 20, the outer wall of the limiting slide rail 31 is fixedly connected to the limiting plate 40, and the outer wall of the limiting slide rail 31 is rotatably connected to the one-way plate 41.

[0046] In this embodiment, since the second push plate 35 is always subjected to the elastic force of the pressure spring 1 34, the second push plate 35 always pushes the connecting rod 36 in the direction of the upper rack 20. Therefore, after the first hydraulic cylinder 5 is extended again, the slider 39 slides along the track adjacent to the AA section of the limiting slide rail 31, that is, in the track in the middle of the limiting slide rail 31. At this time, the first gear 18 is not engaged with the upper rack 20. At the same time, the upper rack 20 drives the locking block 26 to slide through the slide rod 3 28, so that the locking block 26 clamps the first gear 18 to prevent the first gear 18 from rotating, thereby ensuring the position of the filling frame 7.

[0047] Among them, the inner wall of the supporting vertical plate 3 is fixedly connected with a mounting rod 2 33, a second push plate 35 is arranged above the limiting slide rail 31, a plurality of pressure springs 1 34 are fixedly connected between the mounting rod 2 33 and the second push plate 35, the outer wall of the second push plate 35 is fixedly connected with a plurality of positioning rods 1 32, and the plurality of positioning rods 1 32 are all slidably connected to the mounting rod 2 33, the outer wall of the supporting vertical plate 3 is fixedly connected with a connecting rod 1 24, the outer wall of the connecting rod 1 24 is slidably connected with a positioning rod 2 37, the end of the positioning rod 2 37 is fixedly connected with the first push plate 30, and a pressure spring 2 38 is fixedly connected between the first push plate 30 and the connecting rod 1 24.

[0048] Among them, the locking mechanism 404 includes a locking block 26, a second slide groove 27 and a third slide rod 28. The locking block 26 is slidably connected to the two mounting frames 14, the third slide rod 28 is fixedly connected to the locking block 26, and the locking block 26 is slidably connected to the upper rack 20 through the second slide groove 27.

[0049] In this embodiment, the end of the feeding pipe 8 then pushes the electromagnetic plate 6. At this time, the electromagnet 12 is turned on to drive the electromagnetic plate 6 to fill all the gangue in the filling frame 7 to the uppermost layer of the goaf, and the lateral force better promotes the reduction of the gaps between the gangue. At this time, the first hydraulic cylinder 5 can reciprocate and extend multiple times to achieve the purpose of compressing the space. Then the first hydraulic cylinder 5 is completely retracted. This time the distance of the first hydraulic cylinder 5 is longer than the reciprocating distance just now, so that the slider 39 slides along the limit slide rail 31 farthest from AA and moves to the limit slide When the rail 31 ends, the connecting rod 36 disengages from the limit of the second push plate 35 and is limited by the first push plate 30. The first push plate 30 is pushed by the pressure spring 2 38, so that the slider 39 returns to the AA section in the limit slide rail 31, so that the lower rack 4 is reset with the filling frame 7, and the filling of the top layer of the first section of gangue is completed. Then the tamping support plate 9 is reset by the pulling force of the first spring 19, and the feeding pipe 8 continues to fill the second section so that the gangue that was originally at the same height as the tamping main board 10 is now at the same height as the tamping support plate 9, and the above steps are repeated.

[0050] The specific working principle and method of use of the present invention are explained in detail below: when in use, the connecting port 13 is connected to the gangue conveying pipe, so that the gangue enters the discharge pipe 8 and then falls through the discharge port 25, and the gangue falls between the compaction main board 10 and the goaf. The range of each section of filled gangue is set to be smaller than the distance between the electromagnetic plate 6 and the compaction main board 10. The initial filling of gangue needs to fill two lengths. After the height of the first section of gangue is the same as the compaction support plate 9, the traveling crawler assembly 1 drives the device to move and start filling the second section of gangue. After the height of the second section of gangue is the same as the compaction main board 10, the two sections of gangue are approximately stepped or inclined at this time, and the compaction main board 10 continuously expands and contracts to make the gap between the gangue smaller and smaller.

[0051] Then, the filling of the gangue in the uppermost layer of the goaf, that is, the height space where the discharge pipe 8 was originally located, is started. First, the main board 10 is tamped and fully retracted and stops. The first hydraulic cylinder 5 begins to retract. At this time, the discharge pipe 8 does not discharge materials, so that the first hydraulic cylinder 5 drives the discharge pipe 8 to retract through the electromagnet 12, and the discharge pipe 8 extends the lower rack 4 through the upper rack 20 and the first gear 18, that is, the lower rack 4 drives the slide bar 23 and the slide bar 16 to extend. When the lower feeding port 25 is located above the filling frame 7, the discharge pipe 8 starts to discharge materials so that the filling frame 7 is filled with gangue. Then, the first hydraulic cylinder 5 continues to retract so that the lower rack 4 is fully extended and then stops. At this time, due to the action of the slide rail 17, the slide bar 16 slides along the slide rail 17, so that the filling frame 7 is at the same height as the discharge pipe 8. The upper rack 20 and the first gear 18 are engaged in this process because the slider 39 is along the Figure 8 The AA segment in the moving.

[0052] Since the second push plate 35 is always subjected to the elastic force of the pressure spring 1 34, the second push plate 35 always pushes the connecting rod 36 in the direction of the upper rack 20. Therefore, after the first hydraulic cylinder 5 is extended again, the slider 39 slides along the track adjacent to the AA section of the limiting slide rail 31, that is, in the track in the middle of the limiting slide rail 31. At this time, the first gear 18 is not engaged with the upper rack 20. At the same time, the upper rack 20 drives the locking block 26 to slide through the sliding rod 3 28, so that the locking block 26 clamps the first gear 18 to prevent the first gear 18 from rotating, thereby ensuring the position of the filling frame 7.

[0053] Then the end of the feeding pipe 8 pushes the electromagnetic plate 6. At this time, the electromagnet 12 is turned on to drive the electromagnetic plate 6 to fill all the gangue in the filling frame 7 to the top layer of the goaf, and the lateral force better promotes the reduction of the gap between the gangue. At this time, the first hydraulic cylinder 5 can reciprocate and extend multiple times to achieve the purpose of compressing the space. Then the first hydraulic cylinder 5 is completely retracted. This time the distance of the first hydraulic cylinder 5 is longer than the reciprocating distance just now, so that the slider 39 slides along the limit slide rail 31 farthest from AA and moves to the end of the limit slide rail 31 When the second push plate 35 is moved, the connecting rod 36 is disengaged from the limit of the second push plate 35 and is limited by the first push plate 30. The first push plate 30 is pushed by the pressure spring 2 38, so that the slider 39 returns to the AA section in the limit slide rail 31, so that the lower rack 4 is reset with the filling frame 7, and the filling of the top layer of the first section of gangue is completed. Then the tamping support plate 9 is reset by the pulling force of the first spring 19, and the feeding pipe 8 continues to fill the second section so that the gangue that was originally at the same height as the tamping main board 10 is now at the same height as the tamping support plate 9, and the above steps can be repeated.

[0054] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gangue filling device for underground mine tunnels, comprising a supporting base plate (2), the bottom outer wall of the supporting base plate (2) is fixedly connected to a traveling crawler assembly (1), the top outer wall of the supporting base plate (2) is fixedly connected to a supporting vertical plate (3), the outer wall of the supporting vertical plate (3) is fixedly connected to a second hydraulic cylinder (11), the outer wall of the second hydraulic cylinder (11) is fixedly connected to a compacting main plate (10), the outer wall of the supporting vertical plate (3) is fixedly connected to a mounting plate (15), a filling frame (7) is arranged above the mounting plate (15), characterized in that: Also includes: A dual-purpose mechanism (303) is used to add gangue and can also be used to fill and compact the top layer of the goaf with gangue, and the dual-purpose mechanism (303) is installed on the supporting vertical plate (3); A lifting mechanism (101) is used to transport the gangue in the filling frame (7) to the uppermost layer of the goaf at one time in coordination with the retraction of the lifting mechanism (101), wherein the lifting mechanism (101) is installed on the supporting vertical plate (3); An intermittent meshing mechanism (202) is used for not driving the lifting mechanism (101) when the dual-purpose mechanism (303) is extended for the first time, but pushing the gangue in the filling frame (7) into the uppermost layer of the goaf, and the intermittent meshing mechanism (202) is installed on the supporting vertical plate (3); The locking mechanism (404) is used to lock the height and position of the filling frame (7) when the dual-purpose mechanism (303) does not drive the lifting mechanism (101), thereby ensuring the stability of gangue filling. The locking mechanism (404) is installed on the lifting mechanism (101).

2. The underground mine tunnel gangue filling device according to claim 1, characterized in that: The dual-purpose mechanism (303) comprises a first hydraulic cylinder (5), a feeding pipe (8), an electromagnet (12), a connecting port (13) and a feeding port (25); the feeding pipe (8) is slidably connected to the supporting vertical plate (3); the first hydraulic cylinder (5) is fixedly connected to the supporting vertical plate (3); the first hydraulic cylinder (5) is fixedly connected to the electromagnet (12); the electromagnet (12) is fixedly connected to the feeding pipe (8); and the feeding port (25) is fixedly connected to the feeding pipe (8).

3. The gangue filling device for underground mine tunnels according to claim 2 is characterized in that: The inner wall of the filling frame (7) is slidably connected to an electromagnetic plate (6), the inner wall of the tamping main board (10) is rotatably connected to a first shaft rod (22), the outer wall of the first shaft rod (22) is fixedly connected to a tamping support plate (9), the outer walls on both sides of the tamping support plate (9) are fixedly connected to first springs (19), and the ends of the two first springs (19) away from the tamping support plate (9) are fixedly connected to the mounting plate (15).

4. The gangue filling device for underground mine tunnels according to claim 3 is characterized by: The lifting mechanism (101) comprises a lower rack (4), an upper rack (20), a first gear (18), a second shaft (29) and two mounting frames (14); the outer wall of the feed tube (8) is fixedly connected with a plurality of slide rails (21); the upper rack (20) is slidably connected to the outer wall of the feed tube (8) via the plurality of slide rails (21); the two mounting frames (14) are both fixedly connected to the support vertical plate (3); the second shaft (29) is rotatably connected to the two mounting frames (14); the first gear (18) is fixedly connected to the second shaft (29); the upper rack (20) is meshed with the outer wall of the first gear (18); the first gear (18) is meshed with the outer wall of the lower rack (4); and the lower rack (4) is slidably connected to the outer wall of the support vertical plate (3).

5. The underground mine tunnel gangue filling device according to claim 4, characterized in that: The lifting mechanism (101) further comprises a second slide bar (23), a first slide bar (16) and a first slide rail (17); the second slide bar (23) is fixedly connected to the filling frame (7); the second slide bar (23) is slidably connected to the end of the lower rack (4); the first slide bar (16) is fixedly connected to the second slide bar (23); the first slide bar (16) is slidably connected to the first slide rail (17); and the two ends of the first slide rail (17) are respectively fixedly connected to the mounting plate (15) and the supporting vertical plate (3).

6. The gangue filling device for underground mine tunnels according to claim 5, characterized in that: The intermittent meshing mechanism (202) comprises a limiting slide rail (31), a connecting rod three (36) and a slider (39); the limiting slide rail (31) is fixedly connected to the supporting vertical plate (3); the slider (39) is slidably connected to the limiting slide rail (31); the connecting rod three (36) is fixedly connected to the slider (39); the other end of the connecting rod three (36) is fixedly connected to the upper rack (20); the outer wall of the limiting slide rail (31) is fixedly connected to the limiting plate (40); and the outer wall of the limiting slide rail (31) is rotatably connected to a one-way plate (41).

7. The underground mine tunnel gangue filling device according to claim 6, characterized in that: The inner wall of the support vertical plate (3) is fixedly connected with a second mounting rod (33), a second push plate (35) is arranged above the limiting slide rail (31), a plurality of pressure springs (34) are fixedly connected between the second mounting rod (33) and the second push plate (35), a plurality of positioning rods (32) are fixedly connected to the outer wall of the second push plate (35), and the plurality of positioning rods (32) are all slidably connected to the second mounting rod (33), the outer wall of the support vertical plate (3) is fixedly connected with a connecting rod (24), the outer wall of the connecting rod (24) is slidably connected with a second positioning rod (37), the end of the second positioning rod (37) is fixedly connected with the first push plate (30), and a pressure spring (38) is fixedly connected between the first push plate (30) and the connecting rod (24).

8. The gangue filling device for underground mine tunnels according to claim 7, characterized in that: The locking mechanism (404) comprises a locking block (26), a second slide groove (27) and a third slide rod (28); the locking block (26) is slidably connected to the two mounting frames (14); the third slide rod (28) is fixedly connected to the locking block (26); and the locking block (26) is slidably connected to the upper rack (20) via the second slide groove (27).

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