Coal gangue filling pulverizing and conveying device

Abstract

The present application relates to the technical field of mining equipment, and discloses a crushing and conveying device for coal gangue filling, which comprises a moving table, first conveying frames and second conveying frames are movably installed on the top of the moving table respectively, and first driving rollers are installed in the first conveying frames and the second conveying frames. The first hydraulic rods in the moving assembly push the moving shell and the second conveying belt to horizontally stretch and retract, so that the conveying end can be accurately stretched into the inside of the hollow part on the top of the formed gangue pile. The second hydraulic rods in the adjusting assembly drive the rotating frame, and drive the whole auxiliary conveying unit to adjust the angle in the vertical plane, so that the second conveying belt can reach the filling blind area and keep the ideal conveying posture of being horizontal or slightly inclined, thereby continuously and uniformly filling the gangue to the hollow part, and completely avoiding the problem of incomplete filling caused by the hollow part on the top, and greatly improving the compactness and engineering quality of the filling body.

Description

Technical Field

[0001] This invention belongs to the technical field of mining equipment, and in particular relates to a crushing and conveying device for coal gangue backfilling. Background Technology

[0002] Coal gangue backfilling is an important green mining technology. Its core is to use coal gangue, a solid waste generated during coal mining, as the primary material for backfilling underground goaf areas. This technology is mainly divided into two categories: one is underground backfilling, where gangue is processed directly within the mine and filled into the goaf; the other is surface-crushed gangue, which is then transported underground as slurry through boreholes or pipelines for backfilling. Coal gangue backfilling can effectively support overlying strata, significantly reduce surface subsidence (subsidence control rate can reach up to 95%), prevent geological disasters, and free up valuable coal resources buried under buildings, water bodies, and railways.

[0003] Currently, most coal gangue backfilling methods involve transporting gangue using conveyors. After the conveyor is lifted by hydraulic equipment, the transported gangue falls vertically. The falling gangue continuously accumulates on the side of the conveyor, affecting its normal operation. When the conveyor is moved backward, it is impossible to continue transporting stones to the top of the gangue pile, resulting in a void at the top of the gangue pile, which cannot be filled and affects the filling effect.

[0004] To address this issue, we provide a crushing and conveying device for coal gangue backfilling, which solves the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a crushing and conveying device for coal gangue filling. Through the structural cooperation of the auxiliary conveying component, the moving component and the adjusting component, the invention solves the problem in the prior art that the coal gangue filling and conveying device cannot continue to convey stone to the top of the gangue pile, resulting in the top of the gangue pile being hollowed out and affecting the filling effect.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0007] This invention relates to a crushing and conveying device for coal gangue backfilling, comprising a movable platform. A first conveying frame and a second conveying frame are movably mounted on the top of the movable platform. Both the first and second conveying frames have a first drive roller installed inside, and a first conveyor belt is fitted onto the surface of the first drive roller. An auxiliary conveying assembly is provided on one side of the second conveying frame. The auxiliary conveying assembly includes a movable shell located at the bottom of the second conveying frame, a second drive roller movably connected inside the movable shell, and a second conveyor belt fitted onto the surface of the second drive roller. The auxiliary conveying assembly increases the conveying distance of the gangue. A movable assembly is also provided on one side of the second conveying frame. The movable assembly includes a support shaft movably connected inside the second conveying frame, a slider mounted on the surface of the support shaft, a guide groove opened inside the movable shell, and a first hydraulic rod mounted on one side of the slider. The movable assembly adjusts the conveying distance of the second conveyor belt. An adjusting assembly is provided on the top of the second conveying frame. The adjusting assembly includes a rotating frame mounted on the top of the support shaft, a fixed shaft mounted on one side of the rotating frame, a rotating sleeve movably connected to the surface of the fixed shaft, and a second hydraulic rod mounted on one side of the rotating sleeve. The adjusting assembly adjusts the conveying angle of the second conveyor belt.

[0008] The present invention is further configured such that a crushing assembly is provided on the top of the mobile platform. The crushing assembly includes a guide shell disposed on the top of the first conveying frame, two sets of rotating rollers movably connected inside the guide shell, crushing teeth installed on the surface of the rotating rollers, a guide block installed inside the guide shell, and crushing grooves opened on both sides of the guide block. The large particles of gangue conveyed are crushed by the crushing assembly.

[0009] The invention is further configured such that the crushing assembly includes two sets of drive motors installed on the rear side of the moving platform, the output end of the drive motors is equipped with a reducer, and the output end of the reducer is fixedly connected to the rotating roller.

[0010] The present invention is further configured such that a discharge hole is provided at the bottom of the guide shell, and the size of the crushing groove is adapted to the crushing teeth.

[0011] The present invention is further configured such that a movable plate is fixedly connected to the output end of the first hydraulic rod, and the other end of the movable plate is fixedly connected to the movable shell.

[0012] The present invention is further configured such that the slider is slidably connected to the inner wall of the guide rail groove, and the surface of the fixed shaft is movably connected to the inner wall of the second conveyor frame through a bearing.

[0013] The invention is further configured such that a movable pin is installed at the other end of the second hydraulic rod, and the other end of the movable pin is movably connected to the second conveyor frame.

[0014] The present invention is further configured such that a third hydraulic rod is movably connected to the bottom of the first conveyor frame, and the other end of the third hydraulic rod is movably connected to the moving platform.

[0015] The present invention is further configured such that a fourth hydraulic rod is movably connected to the bottom of the second conveyor frame, and the other end of the fourth hydraulic rod is movably connected to the moving platform.

[0016] The present invention is further configured such that an idler roller is provided inside the first conveyor belt, and the two ends of the idler roller are respectively movably connected to the inner walls of the first conveyor frame and the second conveyor frame.

[0017] The present invention has the following beneficial effects.

[0018] 1. This invention uses a first hydraulic rod in the moving component to push the moving shell and the second conveyor belt to extend horizontally, which can accurately extend the conveying end into the cavity at the top of the formed gangue pile. The second hydraulic rod in the adjusting component drives the rotating frame, which in turn drives the entire auxiliary conveying unit to adjust its angle in the vertical plane. This allows the second conveyor belt to reach the filling blind area while maintaining an ideal conveying posture that is horizontal or slightly inclined. As a result, the gangue is continuously and evenly filled into the cavity, completely avoiding the problem of incomplete filling caused by the top hollowing out, and greatly improving the density of the filling body and the quality of the project.

[0019] 2. This invention uses a drive motor and a reducer to drive two sets of rotating rollers embedded with crushing teeth to rotate in opposite directions. Large pieces of gangue are forcibly fed into the guide shell and meet the rotating crushing teeth. Under the synergistic squeezing and shearing action of the rotating rollers and the crushing grooves on the guide block, they are rapidly crushed. The crushed gangue has a smaller particle size and increased uniformity. This not only effectively prevents rolling and slipping on the conveyor belt and reduces the risk of material blockage, but also forms a denser accumulation structure when used as filling material, further enhancing the support strength of the goaf. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the first conveyor frame of the present invention; Figure 3 This is a schematic diagram showing the connection between the second conveyor frame and the auxiliary conveyor assembly of the present invention; Figure 4 This is a schematic diagram of the internal structure of the second conveyor frame of the present invention; Figure 5 This is a schematic diagram showing the connection between the slider and the guide rail groove of the present invention; Figure 6This is a schematic diagram of the internal structure of the movable shell of the present invention; Figure 7 This is a cross-sectional view of the guide shell of the present invention; Figure 8 This is a schematic diagram illustrating the adjustment of the movable shell of the present invention.

[0022] In the attached diagram: 1. Moving platform; 2. First conveyor frame; 3. Second conveyor frame; 4. First drive roller; 5. First conveyor belt; 6. Auxiliary conveying assembly; 601. Moving shell; 602. Second drive roller; 603. Second conveyor belt; 7. Moving assembly; 701. Support shaft; 702. Slider; 703. Guide rail groove; 704. First hydraulic rod; 8. Adjusting assembly; 801. Rotating frame; 802. Fixed shaft; 803. Rotating sleeve; 804. Second hydraulic rod; 9. Crushing assembly; 901. Guide shell; 902. Rotating roller; 903. Crushing teeth; 904. Guide block; 905. Crushing trough; 906. Drive motor; 907. Reducer; 10. Discharge hole; 11. Moving plate; 12. Third hydraulic rod; 13. Fourth hydraulic rod; 14. Idler roller. Detailed Implementation

[0023] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] Example 1 Please see Figures 1-8This invention relates to a crushing and conveying device for coal gangue backfilling, comprising a movable platform 1, with a first conveying frame 2 and a second conveying frame 3 movably mounted on the top of the movable platform 1. Both the first and second conveying frames 2 and 3 have a first drive roller 4 installed inside, and a first conveyor belt 5 is fitted onto the surface of the first drive roller 4. An auxiliary conveying assembly 6 is provided on one side of the second conveying frame 3. The auxiliary conveying assembly 6 includes a movable shell 601 located at the bottom of the second conveying frame 3, a second drive roller 602 movably connected inside the movable shell 601, and a second conveyor belt 603 fitted onto the surface of the second drive roller 602. The auxiliary conveying assembly 6 increases the conveying distance of the gangue. A movable assembly 7 is provided on one side of the second conveying frame 3. The second conveyor belt 603 is adjusted by a moving assembly 7, which includes a support shaft 701 movably connected inside the second conveyor frame 3, a slider 702 mounted on the surface of the support shaft 701, a guide rail groove 703 opened inside the movable housing 601, and a first hydraulic rod 704 mounted on one side of the slider 702. The conveying distance of the second conveyor belt 603 is adjusted by the moving assembly 7. The second conveyor frame 3 is provided with an adjustment assembly 8, which includes a rotating frame 801 mounted on the top of the support shaft 701, a fixed shaft 802 mounted on one side of the rotating frame 801, a rotating sleeve 803 movably connected to the surface of the fixed shaft 802, and a second hydraulic rod 804 mounted on one side of the rotating sleeve 803. The conveying angle of the second conveyor belt 603 is adjusted by the adjustment assembly 8.

[0025] Specifically: First drive rollers 4 are installed inside both the first conveyor frame 2 and the second conveyor frame 3 to provide stable power output. The first conveyor belt 5 works with the first drive rollers 4 to realize the initial conveying function of gangue. The second drive roller 602 provides auxiliary conveying power. The second drive roller 602 works with the second conveyor belt 603 to realize the secondary conveying of gangue. The auxiliary conveying component 6 increases the conveying distance of gangue, effectively preventing material from accumulating on the side of the conveyor. The guide rail groove 703 is used to guide the movement trajectory of the slider 702. The first hydraulic rod 704 provides reliable telescopic power. The conveying distance of the second conveyor belt 603 can be flexibly adjusted through the moving component 7 to adapt to different filling depths. The rotating frame 801 is a bearing structure for angle adjustment. The fixed shaft 802 is the rotation center. The second hydraulic rod 804 provides the power for angle adjustment. The conveying angle of the second conveyor belt 603 can be precisely adjusted through the adjusting component 8 to ensure that the material can be accurately filled into the empty space at the top of the gangue pile.

[0026] Example 2 Please see Figures 1-8Based on Embodiment 1, a crushing assembly 9 is provided on the top of the mobile platform 1. The crushing assembly 9 includes a guide shell 901 located on the top of the first conveyor frame 2, two sets of rotating rollers 902 movably connected inside the guide shell 901, crushing teeth 903 installed on the surface of the rotating rollers 902, a guide block 904 installed inside the guide shell 901, and crushing grooves 905 opened on both sides of the guide block 904. The crushing assembly 9 crushes the conveyed large-particle gangue. The crushing assembly 9 also includes two sets of drive motors 906 installed on the rear side of the mobile platform 1. A reducer 907 is installed at the output end of the drive motor 906. The output end of the reducer 907 is fixedly connected to the rotating rollers 902. A discharge hole 10 is opened at the bottom of the guide shell 901. The size of the crushing groove 905 is adapted to the crushing teeth 903. A moving plate 11 is fixedly connected to the output end of the first hydraulic rod 704. The other end of the moving plate 11 is fixedly connected to the moving shell 601.

[0027] Specifically: the guide shell 901 guides the material into the crushing zone; two sets of rotating rollers 902 are used to squeeze and crush the material; crushing teeth 903 enhance the crushing effect; guide block 904 guides the material flow direction; the crushing troughs 905 on both sides of the guide block 904 cooperate with the crushing teeth 903 to complete the crushing operation; the crushing component 9 effectively crushes the conveyed large-particle gangue, improving the uniformity and density of the filling material; the drive motor 906 provides crushing power; the reducer 907 adjusts the output speed to adapt to the crushing requirements; the output end of the reducer 907 is fixedly connected to the rotating rollers 902 to ensure effective power transmission; the discharge hole 10 facilitates the smooth discharge of crushed material; the size of the crushing trough 905 is adapted to the crushing teeth 903 to ensure the crushing effect while avoiding material jamming; the other end of the moving plate 11 is fixedly connected to the moving shell 601 to achieve effective power transmission.

[0028] Example 3 Please see Figures 1-8 Based on Embodiments 1 and 2, the slider 702 is slidably connected to the inner wall of the guide rail groove 703, the surface of the fixed shaft 802 is movably connected to the inner wall of the second conveyor frame 3 through a bearing, the other end of the second hydraulic rod 804 is equipped with a movable pin, the other end of the movable pin is movably connected to the second conveyor frame 3, the bottom of the first conveyor frame 2 is movably connected to a third hydraulic rod 12, the other end of the third hydraulic rod 12 is movably connected to the moving platform 1, the bottom of the second conveyor frame 3 is movably connected to a fourth hydraulic rod 13, the other end of the fourth hydraulic rod 13 is movably connected to the moving platform 1, and the first conveyor belt 5 is provided with a roller 14, the two ends of the roller 14 are movably connected to the inner walls of the first conveyor frame 2 and the second conveyor frame 3 respectively.

[0029] Specifically: the slider 702 is slidably connected to the inner wall of the guide rail groove 703 to ensure the smoothness of the movement process; the other end of the second hydraulic rod 804 is equipped with a movable pin, and the other end of the movable pin is movably connected to the second conveyor frame 3 to realize the flexibility and reliability of angle adjustment; the other end of the third hydraulic rod 12 is movably connected to the moving table 1 to adjust the tilt angle of the first conveyor frame 2 to adapt to different conveying height requirements; the other end of the fourth hydraulic rod 13 is movably connected to the moving table 1 to adjust the tilt angle of the second conveyor frame 3 to further optimize the conveying path; the two ends of the idler roller 14 are movably connected to the inner walls of the first conveyor frame 2 and the second conveyor frame 3 respectively to support the conveyor belt and reduce running resistance, thereby improving conveying efficiency and equipment life.

[0030] The working principle of this invention is as follows: The operator activates the third hydraulic rod 12 and the fourth hydraulic rod 13 respectively through an external controller. The third hydraulic rod 12 pushes the first conveyor frame 2 to tilt, and the fourth hydraulic rod 13 pushes the second conveyor frame 3 to tilt, thereby adjusting the conveying angle of the first conveyor belt 5. Then, the gangue to be filled is conveyed into the guide shell 901. At the same time, the drive motor 906 is started. The drive motor 906, together with the reducer 907, drives the rotating roller 902 to rotate. The rotating roller 902 drives the crushing teeth 903 to rotate. Together with the crushing grooves 905 opened on both sides of the guide block 904, the large-particle gangue is crushed. The crushed gangue falls onto the first conveyor belt 5. Then, the first drive roller 4 is started. The first drive roller 4 drives the first conveyor belt 5 to convey the gangue and backfill it into the mine.

[0031] As the gangue gradually piles up, when the top of the gangue pile fails to fill and creates voids, the first hydraulic rod 704 is activated. The first hydraulic rod 704, in conjunction with the moving plate 11, drives the moving shell 601 to move. The moving shell 601 drives the guide rail groove 703 to slide on the surface of the slider 702. At the same time as the moving shell 601 moves, it drives the second drive roller 602 and the second conveyor belt 603 to insert into the voids at the top of the gangue.

[0032] Then, the second hydraulic rod 804 is activated, which pushes the rotating frame 801 to tilt. The rotating frame 801, in conjunction with the fixed shaft 802, drives the slider 702 to rotate. The slider 702 then drives the movable housing 601 to rotate, thereby adjusting the angle of the second conveyor belt 603. Figure 8 As shown, the gangue is kept horizontal during transport. While the first conveyor belt 5 continues to transport gangue, it can fall onto the second conveyor belt 603 for further transport, filling the voids at the top of the gangue pile and improving the backfilling effect.

[0033] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A crushing and conveying device for coal gangue backfilling, comprising a moving platform (1), characterized in that: The top of the mobile platform (1) is movably equipped with a first conveyor frame (2) and a second conveyor frame (3). The first conveyor frame (2) and the second conveyor frame (3) are arranged in sequence, and a first drive roller (4) is installed inside each of them. A first conveyor belt (5) is sleeved on the surface of the first drive roller (4). The top of the mobile platform (1) is provided with a crushing component (9). The crushing component (9) includes a guide shell (901) disposed on the top of the first conveyor frame (2), two sets of rotating rollers (902) movably connected inside the guide shell (901), crushing teeth (903) installed on the surface of the rotating rollers (902), a guide block (904) installed inside the guide shell (901), and crushing grooves (905) opened on both sides of the guide block (904). An auxiliary conveying assembly (6) is provided at one end of the second conveyor frame (3) away from the first conveyor frame (2). The auxiliary conveying assembly (6) includes a movable shell (601) disposed at the bottom of the second conveyor frame (3), a second drive roller (602) movably connected inside the movable shell (601), and a second conveyor belt (603) sleeved on the surface of the second drive roller (602). A moving component (7) is provided on the side of the second conveyor frame (3) away from the first conveyor frame (2). The moving component (7) includes a support shaft (701) movably connected inside the second conveyor frame (3), a slider (702) mounted on the surface of the support shaft (701), a guide rail groove (703) opened inside the moving shell (601), and a first hydraulic rod (704) mounted on the side of the slider (702) facing the moving shell (601). The slider (702) is slidably connected to the inner wall of the guide rail groove (703). A moving plate (11) is fixedly connected to the output end of the first hydraulic rod (704). The other end of the moving plate (11) is fixedly connected to the moving shell (601). The first hydraulic rod (704) drives the moving shell (601) to move horizontally and telescopically relative to the slider (702). The second conveyor frame (3) is provided with an adjustment component (8) on its top. The adjustment component (8) includes a rotating frame (801) installed on the top of the support shaft (701), a fixed shaft (802) installed on the outside of the rotating frame (801), a rotating sleeve (803) movably connected to the surface of the fixed shaft (802), and a second hydraulic rod (804) installed on the outside of the rotating sleeve (803). The surface of the fixed shaft (802) is movably connected to the inner wall of the second conveyor frame (3) through a bearing. The other end of the second hydraulic rod (804) is movably connected to the second conveyor frame (3) through a movable pin. The rotating frame (801) is driven to rotate by the second hydraulic rod (804) so ​​as to drive the support shaft (701) and the auxiliary conveyor component (6) to adjust their angles in the vertical plane.

2. The crushing and conveying device for coal gangue backfilling according to claim 1, characterized in that: The crushing assembly (9) also includes two sets of drive motors (906) installed on the rear side of the moving platform (1). The output end of the drive motor (906) is equipped with a reducer (907), and the output end of the reducer (907) is fixedly connected to the rotating roller (902).

3. A crushing and conveying device for coal gangue backfilling according to claim 1 or 2, characterized in that: The bottom of the guide shell (901) is provided with a discharge hole (10), and the size of the crushing groove (905) is adapted to the crushing tooth (903).

4. The crushing and conveying device for coal gangue backfilling according to claim 1, characterized in that: The bottom of the first conveyor frame (2) is movably connected to a third hydraulic rod (12), and the other end of the third hydraulic rod (12) is movably connected to the moving platform (1).

5. A crushing and conveying device for coal gangue backfilling according to claim 1, characterized in that: The bottom of the second conveyor frame (3) is movably connected to a fourth hydraulic rod (13), and the other end of the fourth hydraulic rod (13) is movably connected to the moving platform (1).

6. A crushing and conveying device for coal gangue backfilling according to claim 1, characterized in that: The first conveyor belt (5) is provided with idler rollers (14), and the two ends of the idler rollers (14) are movably connected to the inner walls of the first conveyor frame (2) and the second conveyor frame (3), respectively.

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