Buffer device for discharge chute of coal chute of underground coal bunker

Abstract

The buffering device comprises a belt conveyor, an outer cover box is installed above the end portion of the belt conveyor, a first opening is formed in the top end of the outer cover box, an input port is installed at the front end of the first opening, a first inclined plate is installed inside the input port, and a second inclined plate is installed inside the first inclined plate. A second opening is formed in the bottom of the front end of the outer cover box, a second inclined plate is arranged in the second opening, a buffer bed is arranged below a blanking point of the belt conveyor, and a crushing mechanism is arranged in the outer cover box. Compared with the prior art, damage of falling materials to the belt surface of the belt conveyor is effectively reduced, repair and maintenance of the belt conveyor 1 in daily maintenance work are reduced, efficiency is improved, cost is reduced, large materials can be crushed under the action of the crushing mechanism, and smoothness of the whole production process can be maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to underground coal bunker technical field especially relates to a kind of underground coal bunker coal chute unloading chute buffer device. BACKGROUND

[0002] Underground coal bunker refers to the place for temporarily storing coal in underground coal mine. Its main function is to store coal, to ensure that the coal of coal mining face can be continuously and evenly supplied, so as to ensure the smooth progress of mining work.

[0003] For example, Chinese invention patent (CN114715634A) discloses a kind of coal mine blanking for preventing jamming device, relate to coal mine production technical field, including crushing part and anti-blocking mechanism, two elastic connecting components bottom end are fixed to the inner wall of crushing box, two connecting plates top end are fixed with elastic connecting component top end, and two connecting plates are downwardly inclined, support horizontal plate both ends are fixed with two connecting plate bottom end respectively, vibration motor is installed on the lower surface of support horizontal plate;Anti-blocking component includes motor, stirring rod and spiral blade, motor is installed on the upper surface of support horizontal plate, stirring rod top end is fixed with motor output shaft end, stirring rod bottom end is movably penetrated through support horizontal plate and extends to the inside of discharge pipe, spiral blade is fixed to the outside of stirring rod. By setting motor, stirring rod and spiral blade, the spiral blade is rotated during discharging of discharge pipe, which can effectively prevent coal from being jammed in the discharge pipe during discharging, speed up the discharging speed, and improve production efficiency.

[0004] However, the inventor found the following defects when implementing the device: when the underground coal chute unloading chute is discharged, it directly impacts on the lapping belt, causing great damage to the lapping belt, greatly reducing the service life of the belt conveyor belt, and large materials also cause serious damage to the lapping belt. UTILITY MODEL CONTENTS

[0005] Therefore, it is necessary to solve the above technical problems, when the underground coal chute unloading chute is discharged, it directly impacts on the lapping belt, causing great damage to the lapping belt, greatly reducing the service life of the belt conveyor belt, and large materials also cause serious damage to the lapping belt.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A buffer device for a coal chute unloading chute in an underground coal bunker is characterized in that it includes a belt conveyor, an outer cover box installed above the end of the belt conveyor, a first opening at the top of the outer cover box, an inlet installed at the front end of the first opening, a first inclined plate installed inside the inlet, a second opening at the bottom of the front end of the outer cover box, a second inclined plate installed inside the second opening, a buffer bed installed below the material drop point of the belt conveyor, and a crushing mechanism installed inside the outer cover box at the rear of the inner cavity of the outer cover box, the crushing mechanism being used for crushing materials.

[0008] As a preferred embodiment of the buffer device for the unloading chute of the underground coal bunker provided by this utility model, the crushing mechanism includes a parallel plate, which is fixedly installed in the middle of the outer cover box. A material dropping frame is slidably installed on the surface of the parallel plate, and a material leakage groove is opened on the surface of the material dropping frame. An extension plate is fixedly installed behind the material dropping frame, and the extension plate movably passes through the outer cover box. A pressing block is movably arranged directly above the parallel plate.

[0009] In a preferred embodiment of the underground coal bunker chute buffer device provided by this utility model, an inner frame is provided inside the outer cover box, the inner frame is installed below the parallel plate, a driving cylinder is provided inside the inner frame, a crossbar is provided at the rear of the outer cover box, the output end of the driving cylinder moves through the outer cover box and is fixedly connected to the crossbar, a first connecting frame is fixedly installed at the middle of the rear of the extension plate, the bottom of the first connecting frame is fixedly connected to the middle of the crossbar, a second connecting frame is symmetrically installed on the top of the pressing block, the second connecting frame is L-shaped, a second fixing frame is fixedly provided at the bottom of the second connecting frame, the second fixing frame is slidably disposed on the surface behind the outer cover box, a first fixing frame is fixedly installed at both ends of the crossbar, and a connecting rod is connected between the first fixing frame and the second fixing frame through a rotating shaft.

[0010] In a preferred embodiment of the underground coal bunker chute unloading chute buffer device provided by this utility model, the surface of the pressing block is slidably mounted on the inner wall of the outer casing box by a slider.

[0011] As a preferred embodiment of the underground coal bunker chute unloading buffer device provided by this utility model, the surface of the chute is inclined, the horizontal height of the front end of the chute is higher than the horizontal height of its rear end, and the bottom surface of the pressing block cooperates with the chute.

[0012] In a preferred embodiment of the underground coal bunker chute unloading chute buffer device provided by this utility model, the inner frame is located in the middle of the outer cover box, and an inclined plate is provided on the top of the inner frame.

[0013] In a preferred embodiment of the buffer device for the unloading chute of the underground coal bunker provided by this utility model, the top of the first inclined plate is connected to the inner wall of the inlet by a hinge, a protrusion is provided at the bottom of the first inclined plate, an auxiliary cylinder is provided at the front end of the outer cover box, the output end of the auxiliary cylinder is fixedly connected to a light rod, and the other end of the light rod is connected to the protrusion by a rotating shaft. The bottom of the first inclined plate corresponds to the parallel plate.

[0014] In a preferred embodiment of the buffer device for the coal chute unloading channel in the underground coal bunker provided by this utility model, the bottom of the second inclined plate corresponds to the buffer bed.

[0015] As a preferred embodiment of the buffer device for the unloading chute of the underground coal bunker provided by this utility model, the outer cover box is made of steel plate with a thickness of 10mm or more.

[0016] In a preferred embodiment of the buffer device for the unloading chute of the underground coal bunker provided by this utility model, all connections of the device are made of bolts.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The triple buffer design of the first inclined plate, the second inclined plate and the buffer bed effectively reduces the damage to the belt surface of the conveyor belt caused by falling materials, reduces the need for repair and maintenance of the belt surface during daily maintenance, improves efficiency and reduces costs. At the same time, it effectively extends the service life of the conveyor belt, reduces the frequency of belt replacement, reduces the labor and time costs required for replacement, and brings direct economic benefits to enterprises.

[0019] Under the action of the crushing mechanism, larger materials can be crushed, the fluidity is enhanced, and they can pass through the conveying equipment smoothly, reducing the probability of blockage, ensuring the continuity of the conveying process, avoiding production interruption and efficiency loss caused by blockage, and solving the problems of slippage and deviation of belt conveyors when dealing with excessively large or heavy materials, thereby improving production efficiency and further extending the service life of belt conveyors.

[0020] The entire structure is made of thick steel plates, which can effectively block the impact and splashes that may be generated during the crushing of materials, protecting operators and surrounding equipment from accidental injury and reducing safety risks. Attached Figure Description

[0021] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure;

[0023] Figure 2 This is a structural diagram of the outer casing box;

[0024] Figure 3 This is a structural diagram of the outer casing from another perspective;

[0025] Figure 4 This is a diagram of the internal structure of the outer casing.

[0026] Figure 5 This is a diagram of the internal structure of the outer casing from another perspective.

[0027] The markings in the diagram are explained as follows:

[0028] 1. Belt conveyor; 2. Outer casing; 3. Inlet; 4. First inclined plate; 5. Parallel plate; 6. Extension plate; 7. Drop frame; 8. Discharge chute; 9. Crossbar; 10. First connecting frame; 11. First fixing frame; 12. Connecting rod; 13. Second fixing frame; 14. Second connecting frame; 15. Pressing block; 16. Inner frame; 17. Drive cylinder; 18. Second inclined plate; 19. Buffer bed. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0030] As described in the background section, when materials are discharged from the underground coal chute, they directly impact the overlapping conveyor belt, causing significant damage to the belt surface and greatly reducing the service life of the conveyor belt. Larger materials can also cause severe damage to the overlapping conveyor belt surface.

[0031] To solve this technical problem, this utility model provides a buffer device for the unloading chute of an underground coal bunker. The device includes a belt conveyor 1, an outer cover 2 installed above the end of the belt conveyor 1, a first opening at the top of the outer cover 2, an inlet 3 installed at the front end of the first opening, a first inclined plate 4 installed inside the inlet 3, a second opening at the bottom of the front end of the outer cover 2, a second inclined plate 18 installed inside the second opening, a buffer bed 19 installed below the material discharge point of the belt conveyor 1, and a crushing mechanism installed inside the outer cover 2 at the rear of the inner cavity of the outer cover 2. The crushing mechanism is used for crushing materials.

[0032] The triple buffer design of the first inclined plate 4, the second inclined plate 18 and the buffer bed 19 effectively reduces the damage to the belt surface of the conveyor belt 1 caused by falling materials, reduces the repair and maintenance of the conveyor belt 1 in daily maintenance work, improves efficiency and reduces costs. Furthermore, under the action of the crushing mechanism, larger materials can be crushed, which helps to maintain the smoothness of the entire production process, reduces downtime caused by material blockage, and improves production efficiency.

[0033] Example 1

[0034] Please refer to Figure 4 , 5 A buffer device for a coal chute unloading chute in an underground coal bunker, the crushing mechanism includes a parallel plate 5, the parallel plate 5 is fixedly installed in the middle of the outer cover box 2, a material dropping frame 7 is slidably installed on the surface of the parallel plate 5, a material leakage chute 8 is opened on the surface of the material dropping frame 7, an extension plate 6 is fixedly installed behind the material dropping frame 7, the extension plate 6 movably passes through the outer cover box 2, and a pressing block 15 is movably arranged directly above the parallel plate 5.

[0035] The pressing block 15 is located directly above the parallel plate 5 and is movable. When the material drop frame 7 moves the material to directly above the parallel plate 5, the pressing block 15 applies pressure vertically downward to the material on the surface of the material drop frame 7 to crush the material. The parallel plate 5 is fixedly installed in the middle of the outer cover box 2, the material drop frame 7 slides on the surface of the parallel plate 5, and the pressing block 15 is movable directly above the parallel plate 5. This layout makes full use of the space inside the outer cover box 2, so that the crushing operation can be carried out in an orderly manner in a limited space, avoiding mutual interference between components, and improving the overall compactness and space utilization efficiency of the equipment.

[0036] The outer casing 2 has an inner frame 16 installed below the parallel plate 5. The inner frame 16 has a drive cylinder 17 installed inside the inner frame 16. The outer casing 2 has a crossbar 9 at the rear. The output end of the drive cylinder 17 moves through the outer casing 2 and is fixedly connected to the crossbar 9. The middle of the rear of the extension plate 6 is fixedly installed with a first connecting frame 10. The bottom of the first connecting frame 10 is fixedly connected to the middle of the crossbar 9. The top of the pressing block 15 is symmetrically installed with a second connecting frame 14. The second connecting frame 14 is L-shaped. The bottom of the second connecting frame 14 is fixedly installed with a second fixing frame 13. The second fixing frame 13 is slidably installed on the surface of the rear of the outer casing 2. The two ends of the crossbar 9 are fixedly installed with a first fixing frame 11. The first fixing frame 11 and the second fixing frame 13 are connected by a connecting rod 12 through a pivot.

[0037] The drive cylinder 17, as a power source, provides a stable and precisely controllable linear driving force. Installing the drive cylinder 17 within the inner frame 16 also ensures its safety. Simultaneously, the output end of the drive cylinder 17 is connected to the crossbar 9. This layout effectively utilizes space while ensuring stable transmission of driving force. The extension plate 6 is connected to the crossbar 9 via the first connecting bracket 10. When the drive cylinder 17 pushes the crossbar 9 to move rearwards towards the outer casing 2, it simultaneously drives the material drop frame 7 to slide along the parallel plate 5. With the cooperation of the first fixed frame 11, the second fixed frame 13 and the connecting rod 12, the second connecting frame 14 can be pulled down. The pressing block 15 will move synchronously with the second connecting frame 14. This mechanism provides precise guidance for the up and down movement of the pressing block 15, ensuring that the pressing block 15 moves smoothly up and down in the vertical direction, avoiding deviation or shaking, ensuring the uniform application of pressing force during the pressing process, improving the crushing quality, and when the pressing block 15 descends to the lowest point, the bottom of the pressing block 15 is 5 cm away from the end of the dropping frame 7.

[0038] Example 2

[0039] Further optimizations to Example 1, specifically, such as... Figure 4 , 5 As shown, the surface of the pressing block 15 is slidably mounted on the inner wall of the outer casing 2 via a slider;

[0040] This further increases the stability of the pressing block 15 during its up-and-down movement, thereby further improving the quality of material crushing.

[0041] The surface of the material discharge trough 8 is set to be inclined, the horizontal height of the front end of the material discharge trough 8 is higher than the horizontal height of its rear end, and the bottom surface of the pressing block 15 is matched with the material discharge trough 8.

[0042] The surface of the material discharge trough 8 is inclined, with the front end being higher than the rear end. Utilizing gravity, the material can automatically slide towards the rear end of the discharge frame 7, reducing the possibility of material clogging the material discharge trough 8 and ensuring the crushing mechanism can operate continuously and stably. The tight fit between the pressing block 15 and the material discharge trough 8 ensures uniform pressure distribution, improves crushing efficiency, helps maintain the smoothness of the entire production process, reduces downtime caused by material blockage, and improves production efficiency.

[0043] The inner frame 16 is located in the middle of the outer casing 2, and an inclined plate is provided on the top of the inner frame 16;

[0044] Ensure that materials can fall smoothly and avoid accumulating on the top of the inner frame 16.

[0045] The top of the first inclined plate 4 is connected to the inner wall of the input port 3 via a hinge. A protrusion is provided at the bottom of the first inclined plate 4. An auxiliary cylinder is provided at the front end of the outer cover box 2. The output end of the auxiliary cylinder is fixedly connected to the light rod. The other end of the light rod is connected to the protrusion via a rotating shaft. The bottom of the first inclined plate 4 corresponds to the parallel plate 5. An extended inclined plate is provided at the rear of the inner wall of the input port 3.

[0046] The first inclined plate 4 can be angled under the drive of the auxiliary cylinder. When the auxiliary cylinder drives the guide rod to move to the rear of the device, the first inclined plate 4 can block the opening at the bottom of the inlet 3 to prevent material from falling. When the auxiliary cylinder drives the guide rod to move in the opposite direction, the guide rod can drive the bottom of the first inclined plate 4 to rotate around the hinge, and the opening at the bottom of the inlet 3 can be opened. Thus, when the material enters from the inlet 3, the inclined first inclined plate 4 can guide the material to slide down to the drop box 7 above the parallel plate 5 in a reasonable trajectory. The device has strong compatibility and avoids the material from directly impacting the drop box 7 and causing blockage. This makes the material conveying smoother and more efficient, improves the stability and continuity of feeding, and the design of the extended inclined plate can prevent the material from falling directly from the inlet 3 onto the top of the parallel plate 5.

[0047] The bottom of the second inclined plate 18 corresponds to the buffer bed 19;

[0048] The second inclined plate 18 can guide the material to slide down onto the surface of the belt conveyor 1 on top of the buffer bed 19.

[0049] Example 3

[0050] Further optimizations to Example 2, such as Figures 1-5 As shown, the outer casing 2 is made of steel plate with a thickness of 10mm or more;

[0051] Thicker steel plates can effectively block the impact and splashes that may be generated during the crushing of materials, protecting operators and surrounding equipment from accidental injury and reducing safety risks.

[0052] All connections of the device are made using bolts;

[0053] It facilitates transport and assembly in the well.

[0054] The usage process of the buffer device for the coal chute unloading channel in the underground coal bunker provided by this utility model is as follows:

[0055] First, when the auxiliary cylinder drives the guide rod to move backward, the first inclined plate 4 can block the opening at the bottom of the inlet 3, and the material will be stored in the inner cavity of the inlet 3. Then, the drive cylinder 17, as the power source, retracts, driving the crossbar 9 to move towards the surface of the outer cover box 2. At the same time, the dropping frame 7 will slide forward along the parallel plate 5. When the dropping frame 7 moves directly below the inlet 3, the auxiliary cylinder drives the guide rod to move forward, which can simultaneously drive the bottom of the first inclined plate 4 to rotate around the hinge, opening the opening at the bottom of the inlet 3. Thus, when the material enters from the inlet 3, the inclined first inclined plate 4 can guide the material to slide down into the dropping frame 7 above the parallel plate 5 along a reasonable trajectory. When a larger material falls into the dropping frame 7, the auxiliary cylinder... The cylinder drives the first inclined plate 4 to seal the opening at the bottom of the inlet 3, and then drives the cylinder 17 to push the crossbar 9 to move to the rear of the outer cover box 2. This can simultaneously drive the dropping frame 7 to slide along the parallel plate 5. At the same time, with the cooperation of the first fixed frame 11, the second fixed frame 13 and the connecting rod 12, the second connecting frame 14 can be pulled down. The pressing block 15 will move synchronously with the second connecting frame 14. The dropping frame 7 moves to the top of the parallel plate 5. The pressing block 15 will crush the material inside the dropping frame 7. Then the cylinder 17 will retract again, and the dropping frame 7 will slide forward along the parallel plate 5. The crushed material will fall from the discharge trough 8. After the material falls to the surface of the second inclined plate 18, the second inclined plate 18 can guide the material to slide down to the surface of the belt conveyor 1 at the top of the buffer bed 19.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A buffer device for a coal chute unloading channel in an underground coal bunker, characterized in that, It includes a belt conveyor (1), an outer cover box (2) installed above the end of the belt conveyor (1), a first opening is provided at the top of the outer cover box (2), an input port (3) is installed at the front end of the first opening, a first inclined plate (4) is installed inside the input port (3), a second opening is provided at the bottom of the front end of the outer cover box (2), a second inclined plate (18) is provided inside the second opening, a buffer bed (19) is provided below the material drop point of the belt conveyor (1), and a crushing mechanism is provided inside the outer cover box (2). The crushing mechanism is installed at the rear of the inner cavity of the outer cover box (2) and is used for crushing materials.

2. The buffer device for the unloading chute of the underground coal bunker according to claim 1, characterized in that, The crushing mechanism includes a parallel plate (5), which is fixedly installed in the middle of the outer cover box (2). A material drop frame (7) is slidably installed on the surface of the parallel plate (5). A material discharge groove (8) is opened on the surface of the material drop frame (7). An extension plate (6) is fixedly installed behind the material drop frame (7). The extension plate (6) movably passes through the outer cover box (2). A pressing block (15) is movably arranged directly above the parallel plate (5).

3. The buffer device for the unloading chute of the underground coal bunker according to claim 2, characterized in that, The outer casing (2) has an inner frame (16) inside, which is installed below the parallel plate (5). A drive cylinder (17) is installed inside the inner frame (16). A crossbar (9) is installed at the rear of the outer casing (2). The output end of the drive cylinder (17) moves through the outer casing (2) and is fixedly connected to the crossbar (9). A first connecting frame (10) is fixedly installed at the middle of the rear of the extension plate (6). The bottom of the first connecting frame (10) is fixedly connected to the crossbar (9). In the middle of the rod (9), a second connecting frame (14) is symmetrically installed on the top of the pressing block (15). The second connecting frame (14) is L-shaped. A second fixing frame (13) is fixedly installed at the bottom of the second connecting frame (14). The second fixing frame (13) is slidably installed on the surface behind the outer cover box (2). A first fixing frame (11) is fixedly installed at both ends of the crossbar (9). A connecting rod (12) is connected between the first fixing frame (11) and the second fixing frame (13) through a rotating shaft.

4. The buffer device for the unloading chute of an underground coal bunker according to claim 2, characterized in that, The surface of the pressing block (15) is slidably mounted on the inner wall of the outer casing (2) by a slider.

5. The buffer device for the unloading chute of an underground coal bunker according to claim 2, characterized in that, The surface of the material leakage trough (8) is inclined, the horizontal height of the front end of the material leakage trough (8) is higher than the horizontal height of its rear end, and the bottom surface of the pressing block (15) is matched with the material leakage trough (8).

6. The buffer device for the unloading chute of an underground coal bunker according to claim 3, characterized in that, The inner frame (16) is located in the middle of the outer cover box (2), and an inclined plate is provided on the top of the inner frame (16).

7. The buffer device for the unloading chute of an underground coal bunker according to claim 2, characterized in that, The top of the first inclined plate (4) is connected to the inner wall of the input port (3) by a hinge. A protrusion is provided at the bottom of the first inclined plate (4). An auxiliary cylinder is provided at the front end of the outer cover box (2). The output end of the auxiliary cylinder is fixedly connected to the light rod. The other end of the light rod is connected to the protrusion through a rotating shaft. The bottom of the first inclined plate (4) corresponds to the parallel plate (5).

8. The buffer device for the unloading chute of an underground coal bunker according to claim 7, characterized in that, The bottom of the second inclined plate (18) corresponds to the buffer bed (19).

9. The buffer device for the unloading chute of an underground coal bunker according to claim 1, characterized in that, The outer casing (2) is made of steel plate with a thickness of 10mm or more.

10. The buffer device for the unloading chute of an underground coal bunker according to claim 1, characterized in that, All connections of the device are made using bolts.

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