Coal mine goaf filling prefabricating device

Abstract

The application belongs to the technical field of material crushing devices, and particularly relates to a coal mine goaf filling material prefabricating device, which comprises a main frame, a lower roller group arranged horizontally in front of and behind the main frame and rotatably installed on the main frame, a vertical sliding port arranged above the lower roller group, an upper roller group slidably installed in the vertical sliding port, and the upper roller group and the lower roller group being vertically opposite to each other. Through the arrangement of the roller groups, the upper and lower roller groups are arranged, the stamping plates are installed on the circumferential side walls, the roller groups are driven to rotate oppositely, the upper roller group is vertically slid up and down through the design of the shape, the raw materials are crushed and the powders are obtained through the rotation of the stamping plates, the up-and-down movement of the upper roller group is matched with the rotation of the stamping plates, the powders between the stamping plates are further impacted and crushed, and the crushing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of material crushing devices, and in particular to a coal mine goaf filling prefabrication device. Background Art

[0002] Coal mine goaf refers to the large number of mine culverts produced during coal mining that need to be backfilled after excavation to prevent collapse. The backfilling is mostly done by grouting. A backfilling site is set up near the mining area to produce backfill slurry, and the backfill slurry is transported to the goaf through pipelines for solidification and backfill reinforcement.

[0003] Patent application document with publication number CN112657634A discloses a coal mine goaf filling prefabrication device, which can automatically crush coal gangue quickly through the linkage of a hammer and a blade;

[0004] However, when the above structure is used for raw material production, although the hammer and blade can smash the stone into pieces, the raw materials used in slurry production require a high degree of fine crushing, and the blade can only rotate and crush the stone in the crushing chamber, but cannot solve the problem of reduced crushing efficiency caused by the accumulation of fine powder. Therefore, we propose a coal mine goaf filling prefabrication device to solve the above problem. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to propose a coal mine goaf filling prefabrication device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A coal mine goaf filling prefabrication device comprises a main frame, the main frame being rotatably connected to a lower roller group extending horizontally forward and backward, the main frame being located directly above the lower roller group and provided with a vertical sliding opening, an upper roller group being installed in the vertical sliding opening for sliding up and down, the upper roller group and the lower roller group being directly opposite each other;

[0008] The upper roller group comprises a first rotating shaft and a flywheel driving the first rotating shaft to rotate counterclockwise, a counterweight is provided at one end of the first rotating shaft away from the flywheel, a first inner frame of a ring array is provided on the circumferential side wall of the first rotating shaft, the first inner frame is connected to a first stamping plate at one end away from the first rotating shaft through a first screw, the center line of the first stamping plate passes perpendicularly through the axis of the first rotating shaft, a first relay frame is installed between two adjacent first stamping plates, and the end surface of the first relay frame located between the first stamping plates protrudes away from the first rotating shaft to form an arc convex portion;

[0009] The lower roller group has a second rotating shaft that rotates clockwise, and a second inner frame of an annular array is set on the circumferential side wall of the second rotating shaft. The second inner frame is connected to the second stamping plate through a second screw at one end away from the second rotating shaft. The second stamping plate is opposite to the end face of the first stamping plate one by one. A second relay frame is installed between two adjacent second stamping plates, and the end face of the second relay frame located between the two second stamping plates is set to be flat;

[0010] The scraper is located below the lower roller group. The right side of the scraper extends upward over the contact position between the upper roller group and the lower roller group. The bottom of the scraper is inclined and a discharge port is set at a low position.

[0011] Preferably, the main frame is located above the upper roller group and a conveyor belt for horizontally conveying raw materials is provided, and the feed plate extends obliquely downward from the conveyor belt toward the upper roller group.

[0012] Preferably, a slide is installed at the bottom of the feed plate away from the conveyor belt, and a lower scraper is slidably installed between the slide and the feed plate and is in sliding contact with the surface of the upper roller group.

[0013] Preferably, a slide rod is provided on one side of the slide close to the upper roller group, and a counterweight frame slidably connected to the slide rod is provided at the bottom of the lower scraper.

[0014] Preferably, an upper scraping member is provided on the top of the scraper, and the upper scraping member is designed to be a wedge-shaped portion on the side close to the surface of the first stamping plate.

[0015] Preferably, the scraper is provided with a rotating shaft at the bent position, the rotating shaft is rotatably connected to the main frame via a bearing, and the wedge-shaped portion is always in press contact with the first stamping plate.

[0016] Preferably, the lower roller group is located in the middle cavity of the scraper, a rotation gap is left between the inner wall of the scraper bottom and the bottom of the lower roller group, and a collecting bucket with an upward opening is provided at the top of the scraper at the lower scraping member.

[0017] Preferably, the main frame is located between the upper roller group and the feed plate and a swing plate is installed, and the swing plate extends downward and gradually approaches the feed plate to form a gradually narrowing feed channel.

[0018] Preferably, a connecting shaft is installed in the middle of the swing plate, the connecting shaft is rotatably connected to the main frame, and the swing plate is bent upward on the side close to the conveyor belt to form an upward turning portion.

[0019] Preferably, a lining plate is installed at the position of the swing plate facing the feed plate, and a wear-resistant plate is installed on the top of the swing plate close to the upper roller group.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] 1. Through the setting of the roller group, the upper and lower arranged roller groups, the circumferential side wall is installed with the stamping plate, the roller group is driven to rotate oppositely, and the upper roller group can be vertically slid up and down through the design of the shape, the raw materials are broken and the powder is obtained through the rotation of the stamping plate, and the up and down movement of the upper roller group is matched with the rotation of the stamping plate, so that the powder between the stamping plates is further impacted and broken, and the crushing efficiency is improved;

[0022] 2. Through the setting of the scraper, the rotation of the roller group, the powder is continuously conveyed, the powder cannot be accumulated at the impact position to ensure smooth discharge, the scraping parts are laterally installed on the upper and lower roller groups, the scraping parts of the lower roller group scrape the powder on the stamping plate while carrying and guiding the raw materials on the right part of the feeding plate to avoid material scattering, and the scraping parts of the lower roller group are arranged at the top of the scraper, so that the powder can slide out of the scraper smoothly through the shaking of the scraper around the rotation shaft driven by the roller group;

[0023] 3. Through the setting of the swing plate, the raw materials are fed on the feeding plate, the swing plate is overlapped above the raw materials, the raw materials are guided to be gradually thinned, too much raw materials are prevented from entering between the stamping plates at the same time to cause jamming, the crushing work is ensured to be smooth, with the rotation of the upper roller group, the arc convex part of the first relay frame can press the movable end of the swing plate downward, so that the large block raw materials below can be pre-broken, the volume of the raw materials is further ensured to be appropriate and uniform, and the workload of subsequent crushing is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a three-dimensional schematic view of the present application Figure 1 ;

[0025] Figure 2 is a three-dimensional schematic view of the present application Figure 2 ;

[0026] Figure 3 is a three-dimensional schematic view of the present application

[0027] Figure 4 is a three-dimensional schematic view of the present application

[0028] Figure 5 is a three-dimensional schematic view of the present application

[0029] Figure 6 is a three-dimensional schematic view of the present application

[0030] Figure 7 is a three-dimensional schematic view of the present application

[0031] Figure 8 is a three-dimensional schematic view of the present application

[0032] In the figure: 1, main frame; 11, conveying belt; 12, vertical sliding port; 2, swing plate; 21, connecting shaft; 22, upward turning part; 23, wear plate; 24, lining plate; 3, upper roller set; 31, counterweight block; 32, first relay frame; 33, first stamping plate; 331, first screw rod; 34, first inner frame; 35, first rotating shaft; 351, flywheel; 4, lower roller set; 41, second rotating shaft; 42, second relay frame; 43, second stamping plate; 431, second screw rod; 44, second inner frame; 5, scraper; 51, rotating shaft; 52, upper scraping part; 6, feeding plate; 61, lower scraping part; 611, counterweight frame; 62, sliding frame; 621, sliding rod. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings of the embodiments of the present application. Figure 1-8 The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings of the embodiments of the present application.

[0034] Embodiment 1

[0035] Reference Figures 1 to 8 In this embodiment, a coal mine goaf filler prefabrication device is provided, which comprises a fixed main frame 1, a rotating lower roller set 4 and a rotating and up-down sliding upper roller set 3.

[0036] Regarding the main frame 1, the main frame 1 is rotationally connected with a lower roller set 4 extending horizontally forward and backward, wherein the main frame 1 is provided with a vertical sliding port 12 directly above the lower roller set 4, and an upper roller set 3 is slidingly installed in the vertical sliding port 12, specifically, the upper roller set 3 and the lower roller set 4 are vertically opposite to each other, and at the contact position, a processing space for impacting and crushing raw materials is formed, wherein the main frame 1 is provided with a conveying belt 11 for horizontally conveying raw materials above the upper roller set 3, and a feeding plate 6 extends downward from the conveying belt 11 to the direction of the upper roller set 3, raw materials entering from the left side will be crushed at the contact position of the upper roller set 3 and the lower roller set 4, it should be noted that the main frame 1 is provided with a swing plate 2 between the upper roller set 3 and the feeding plate 6, the swing plate 2 extends downward and gradually approaches the feeding plate 6 to form a gradually narrowing feeding channel, which can gradually thin the raw materials and avoid too much raw materials entering the working space at the same time.

[0037] The upper roller set 3 and the lower roller set 4 are working structures of related components, and the related components in the upper roller set 3 and the lower roller set 4 will be further described below in combination with the drawings:

[0038] Regarding the upper roller group 3, the upper roller group 3 has a first rotating shaft 35 and a flywheel 351 driving the first rotating shaft 35 to rotate counterclockwise, a counterweight 31 is arranged at the end of the first rotating shaft 35 away from the flywheel 351, an annular array of first inner frames 34 is arranged on the circumferential side wall of the first rotating shaft 35, a first stamping plate 33 is connected to the end of the first inner frame 34 away from the first rotating shaft 35 through a first screw rod 331, specifically, the first stamping plate 33 has a center line perpendicular to the axis of the first rotating shaft 35, and a first relay frame 32 is arranged between adjacent two first stamping plates 33, the end face of the first relay frame 32 between the first stamping plates 33 protrudes to form an arc convex part away from the first rotating shaft 35, that is, in this embodiment, the distance from the distal end of the first relay frame 32 to the axis of the first rotating shaft 35 is greater than the distance from the midpoint of the first stamping plate 33 to the axis of the first rotating shaft 35, as the upper roller group 3 rotates, the height of the lower roller group 4 remains unchanged, so the height of the upper roller group 3 will change due to the contact between the first relay frame 32 or the first stamping plate 33 and the lower roller group 4, specifically, the contact between the first relay frame 32 and the lower roller group 4 will make the upper roller group 3 move up, and the contact between the first stamping plate 33 and the lower roller group 4 will make the upper roller group 3 move down and reset;

[0039] The lower roller group 4 has a second rotating shaft 41 rotating clockwise, an annular array of second inner frames 44 is arranged on the circumferential side wall of the second rotating shaft 41, a second stamping plate 43 is connected to the end of the second inner frame 44 away from the second rotating shaft 41 through a second screw rod 431, the second stamping plate 43 is opposite to the end face of the first stamping plate 33, a second relay frame 42 is arranged between adjacent two second stamping plates 43, the end face of the second relay frame 42 between the two second stamping plates 43 is arranged as a plane, the distance from the distal end of the second relay frame 42 to the axis of the second rotating shaft 41 is greater than the distance from the midpoint of the second stamping plate 43 to the axis of the second rotating shaft 41, which can further improve the degree of height increase of the upper roller group 3 when the second relay frame 42 is in contact with the first relay frame 32.

[0040] The core of the present application includes providing a new crushing method to prevent clogging, so in it, the upper roller set 3 and the lower roller set 4 rotate towards each other, the first relay frame 32 and the second relay frame 42 rotate to the abutting position to lift the upper roller set 3 upward to accumulate gravitational potential energy, the first stamping plate 33 and the second stamping plate 43 rotate to the opposite position to exert extrusion force on the raw material by using the weight of the upper roller set 3 and the counterweight 31 and the downward impact force, because the raw material is crushed by gravity, the size of the upper roller set 3 is designed to be larger than that of the lower roller set 4, which can provide more weight, and in order to avoid the difference in circumference between the upper roller set 3 and the lower roller set 4 causing the first stamping plate 33 and the second stamping plate 43 to be misaligned, first, the arc convex part of the first relay frame 32 cooperates with the flat surface of the second relay frame 42, that is, the arc length of the arc convex part is equal to the length of the flat surface of the second relay frame 42, second, the rotational speed difference of the upper roller set 3 and the lower roller set 4 is controlled, that is, the rotational speed of the upper roller set 3 is less than that of the lower roller set 4, so that the first stamping plate 33 and the second stamping plate 43 can be opposite each other, and finally, the rotation of the upper roller set 3 and the lower roller set 4 can drive the powder to move to the right and separate from the first stamping plate 33 and the second stamping plate 43, so that the crushed powder can be timely separated from the processing space, preventing the powder from accumulating at the crushing position and ensuring smooth discharge, which can also avoid the powder hindering the crushing part from efficient crushing.

[0041] For the scraper 5, the scraper 5 is located below the lower roller set 4, the right side of the scraper 5 extends upward beyond the contact position of the upper roller set 3 and the lower roller set 4, the bottom of the scraper 5 is inclined and provided with a discharge port at the low place, and the powder falling from above will be collected and guided by the scraper 5 with the opening upward, and will be discharged from the discharge port under the guidance of the inclined bottom surface.

[0042] The processing method of impact crushing will produce new problems, that is, the impact force may cause the powder to adhere to the surface of the first stamping plate 33 and the second stamping plate 43, and if not handled in time, a compact support protrusion will be formed between the first stamping plate 33 and the second stamping plate 43, affecting the smooth progress of subsequent crushing impact, therefore, the following supplementary structure is provided:

[0043] Regarding the lower roller set 4, the following specific configuration is provided:

[0044] The feeding plate 6 is installed with a sliding frame 62 at the bottom of the side away from the conveyor belt 11, a lower scraping part 61 that slides and abuts with the surface of the upper roller set 3 is installed between the sliding frame 62 and the feeding plate 6, a sliding rod 621 is provided on the side of the sliding frame 62 close to the upper roller set 3, and a counterweight frame 611 that slides with the sliding rod 621 is provided at the bottom of the lower scraping part 61, the gravity of the counterweight frame 611 will provide potential energy for the lower scraping part 61 to slide downward, the lower roller set 4 is located at the cavity position in the middle of the scraper 5, and a rotating gap is left between the bottom of the lower roller set 4 and the inner wall of the bottom of the scraper 5, and an open upward collecting hopper is provided at the top of the scraper 5 at the position of the lower scraping part 61.

[0045] According to the specific configuration of the lower roller group 4 described above, the following effects can be achieved:

[0046] 1. The lower scraping member 61 slidingly abuts the surface of the lower roller group 4, which can guide the raw materials at the position of the feeding plate 6, adapt to the change in the distance between the circumferential side wall of the lower roller group 4 and the right side of the feeding plate 6, and ensure that the raw materials can be stably conveyed to the processing space between the upper roller group 3 and the lower roller group 4.

[0047] 2. The right lower end of the lower scraping member 61 slidingly abuts the surface of the lower roller group 4, and the right angle position of the right lower end of the lower scraping member 61 can scrape the powder on the surface of the second stamping plate 43, so that the powder falls and prevents adhesion to the surface of the second stamping plate 43, affecting subsequent crushing processing.

[0048] 3. The powder scraped upwards will be collected by the second collection hopper of the scraper 5 at the top opening, and will be discharged together with the collected powder, avoiding waste of the powder.

[0049] 4. The bottom inner wall of the scraper 5 and the bottom of the lower roller group 4 have a rotating gap, and when the lower roller group 4 rotates clockwise, the upper second stamping plate 43 participates in crushing, and the lower second stamping plate 43 can push the powder at the bottom of the scraper 5 to the discharge port direction, further accelerating the discharge of the powder from the scraper 5.

[0050] Regarding the upper roller group 3, the following specific configuration is provided:

[0051] The scraper 5 is provided with an upper scraping member 52, the wedge-shaped part of the upper scraping member 52 is designed close to the surface of the first stamping plate 33, the scraper 5 is provided with a rotating shaft 51 at the bending position, the rotating shaft 51 is rotatably connected to the main frame 1 through a bearing, and the wedge-shaped part is always in contact with the first stamping plate 33.

[0052] According to the specific configuration of the upper roller group 3 described above, the following effects can be achieved:

[0053] 1. The scraper 5 is provided with an upper scraping member 52, the left side of the upper scraping member 52 overlaps the surface of the first stamping plate 33, which can scrape the raw materials adhered to the surface of the first stamping plate 33;

[0054] 2. The center of gravity of the scraper 5 is located to the left of the rotating shaft 51, and the weight of the powder provides potential energy for the left swing of the upper scraping member 52, so that when the upper roller group 3 rotates, the first intermediate frame 32 contacts the upper scraping member 52, the upper scraping member 52 is squeezed and rotates clockwise around the rotating shaft 51, the first stamping plate 33 contacts the upper scraping member 52, and the upper scraping member 52 swings counterclockwise under the action of the weight of the scraper 5 and the weight of the powder, and resets, which adapts to the size change of the first stamping plate 33 and the first intermediate frame 32.

[0055] 3. The rotation of the upper roller group 3 can drive the scraper 5 to swing around the rotating shaft 51, so that the lower half of the scraper 5 can be shaken up and down with the rotating shaft 51 as the center. With the inclination angle of the lower half of the scraper 5 being lower on the left and higher on the right, the bottom plate of the scraper 5 can provide a pushing force to the left for the raw materials, thereby accelerating the discharge of the raw materials to the left.

[0056] Example 2

[0057] refer to Figure 1-3 and Figure 5-6 In this embodiment, a coal mine goaf filling prefabrication device is proposed, which includes a fixed main frame 1, a rotating lower roller group 4 and a swing plate 2.

[0058] Among them, the connecting shaft 21 is installed in the middle of the swing plate 2, and the connecting shaft 21 is rotatably connected to the main frame 1. The side of the swing plate 2 close to the conveyor belt 11 is bent upward to form an upturned portion 22. As to why the swing plate 2 is rotatably matched with the main frame 1, it is mainly considered from two perspectives:

[0059] 1. Considering the different volumes of raw materials, to prevent oversized raw materials from getting stuck in the feed channel, when the upper roller group 3 rotates counterclockwise, the swing plate 2 is pushed downward by the arc convex part of the first relay frame 32 of the upper roller group 3, and the swing plate 2 will approach the feed plate 6 to crush large pieces of raw materials;

[0060] 2. The raw materials pushed to the right by the conveyor belt 11 are unevenly distributed, which will cause different thicknesses of the raw materials when they contact the upper roller group 3, resulting in uneven front and back of the upper roller group 3. By pressing down on the swing plate 2, the raw materials in the same horizontal area can be squeezed and pushed and dispersed into the same thickness, making the force on the upper roller group 3 stable.

[0061] Except for the different installation method of the swing plate 2 to the main frame 1 in this embodiment and embodiment 1, the other working mechanisms are completely the same.

[0062] In Example 1 and Example 2, a lining plate 24 is installed on the swing plate 2 facing the feed plate 6 , and a wear-resistant plate 23 is installed on the top of the swing plate 2 near the upper roller group 3 .

[0063] The provided lining plate 24 and the wear-resistant plate 23 can protect the easily worn positions of the swing plate 2, and avoid the swing plate 2 from being worn quickly and resulting in frequent replacement and maintenance.

[0064] The processes and materials involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to the internal structure and methods.

[0065] The above merely describes preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes within the technical scope disclosed by the present application and according to the technical solutions and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A coal mine goaf filling prefabrication device, characterized in that: A main frame (1) is rotatably connected to a lower roller group (4) extending horizontally forward and backward. The main frame (1) is located directly above the lower roller group (4) and a vertical sliding opening (12) is provided. An upper roller group (3) is installed in the vertical sliding opening (12) for sliding up and down. The upper roller group (3) and the lower roller group (4) are directly opposite to each other in vertical direction. The upper roller group (3) comprises a first rotating shaft (35) and a flywheel (351) for driving the first rotating shaft (35) to rotate counterclockwise. A counterweight (31) is provided at one end of the first rotating shaft (35) away from the flywheel (351). A first inner frame (34) in an annular array is provided on the circumferential side wall of the first rotating shaft (35). The first inner frame (34) is connected to a first punching plate (33) at one end away from the first rotating shaft (35) through a first screw (331). The center line of the first punching plate (33) passes perpendicularly through the axis of the first rotating shaft (35). A first relay frame (32) is installed between two adjacent first punching plates (33). The end surface of the first relay frame (32) located between the first punching plates (33) protrudes away from the first rotating shaft (35) to form an arc convex portion. The lower roller group (4) has a second rotating shaft (41) that rotates in a clockwise direction, and a second inner frame (44) is provided on the circumferential side wall of the second rotating shaft (41) in an annular array. The second inner frame (44) is connected to a second stamping plate (43) at one end away from the second rotating shaft (41) through a second screw (431). The end faces of the second stamping plate (43) and the first stamping plate (33) are opposite to each other. A second relay frame (42) is installed between two adjacent second stamping plates (43). The end face of the second relay frame (42) located between the two second stamping plates (43) is set to be a plane. A scraper (5) is located below the lower roller group (4), and the right side of the scraper (5) extends upward and crosses the contact position between the upper roller group (3) and the lower roller group (4). The bottom of the scraper (5) is inclined and a discharge port is provided at a low position. The upper roller group (3) and the lower roller group (4) rotate in opposite directions, the first relay frame (32) and the second relay frame (42) rotate to abutment positions to lift the upper roller group (3) upward to accumulate gravity potential energy, the first punching plate (33) and the second punching plate (43) rotate to facing positions to apply extrusion force to the raw material by using the deadweight and downward impact force of the upper roller group (3), and the upper roller group (3) and the lower roller group (4) rotate to drive the powder to move right and separate from the first punching plate (33) and the second punching plate (43); An upper scraping piece (52) is provided on the top of the scraper (5), and the upper scraping piece (52) is designed to be a wedge-shaped portion on the side close to the surface of the first punching plate (33); The scraper (5) is provided with a rotating shaft (51) at a bent position, and the rotating shaft (51) is rotatably connected to the main frame (1) via a bearing; The center of gravity of the scraper (5) is located on the left side of the rotating shaft (51). The weight of the powder provides the upper scraper (52) with potential energy to swing leftward, so that when the upper roller group (3) rotates, when the first relay frame (32) contacts the upper scraper (52), the upper scraper (52) is squeezed and swings clockwise around the rotating shaft (51). When the first punching plate (33) contacts the upper scraper (52), the upper scraper (52) swings counterclockwise and resets under the action of the weight of the scraper (5) and the weight of the powder, thereby adapting to the size changes of the first punching plate (33) and the first relay frame (32).

2. A coal mine goaf filling prefabrication device according to claim 1, characterized in that: The main frame (1) is located above the upper roller group (3) and is provided with a conveyor belt (11) for horizontally conveying raw materials. The feed plate (6) extends obliquely downward from the conveyor belt (11) toward the upper roller group (3).

3. A coal mine goaf filling prefabrication device according to claim 2, characterized in that: A slide (62) is installed at the bottom of the feed plate (6) away from the conveyor belt (11), and a lower scraper (61) is installed between the slide (62) and the feed plate (6) and is in sliding contact with the surface of the lower roller group (4).

4. A coal mine goaf filling prefabrication device according to claim 3, characterized in that: A sliding rod (621) is provided on one side of the slide (62) close to the upper roller group (3), and a counterweight frame (611) is provided at the bottom of the lower scraper (61) and is in sliding connection with the sliding rod (621).

5. The coal mine goaf filling prefabrication device according to claim 1, characterized in that: The lower roller group (4) is located in the middle cavity of the scraper (5), and a rotation gap is left between the inner wall of the bottom of the scraper (5) and the bottom of the lower roller group (4). The top of the scraper (5) is located at the lower scraping member (61) and is provided with a collection bucket with an upward opening.

6. The coal mine goaf filling prefabrication device according to claim 1, characterized in that: The main frame (1) is located between the upper roller group (3) and the feed plate (6), and a swing plate (2) is installed. The swing plate (2) extends downward and gradually approaches the feed plate (6) to form a gradually narrowing feed channel.

7. A coal mine goaf filling prefabrication device according to claim 6, characterized in that: A connecting shaft (21) is installed in the middle of the swing plate (2), and the connecting shaft (21) is rotatably connected to the main frame (1). The swing plate (2) is bent upward on one side close to the conveyor belt (11) to form an upward turning portion (22).

Images