Crushing device for coal mining

Abstract

The invention relates to the technical field of coal mining, and discloses a crushing device for coal mining, which comprises a base, a blanking box, a crushing box and a crushing part arranged in the crushing box, a driving part for driving the crushing part to operate is arranged on the surface of the base, and a feeding box is slidably arranged at the top of the crushing box; the bottom of the feeding box is provided with a material passing hole for materials to pass through, the two sides of the inner wall of the feeding box are each provided with a feeding inclined block for guiding the materials, the adjusting assembly is arranged in the feeding box and comprises a check block sliding in the feeding inclined blocks, the two sides of the check block are each fixedly connected with a sliding block, and the sliding blocks are arranged in the sliding blocks. Sliding grooves matched with the sliding blocks are formed in the inner wall of the crushing box, the sliding grooves are obliquely formed, and the crushing box is connected with the feeding box through a hydraulic rod. Blockage in the crushing box and damage to the crushing assembly can be effectively reduced, and the crushing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of coal mining technology, specifically to a crushing device for coal mining. Background Technology

[0002] Coal gangue, as the main solid material generated during coal mining, has its resource utilization as the core path to solving its stockpiling problem. Crushing is a crucial preliminary step in the resource utilization of coal gangue. Through crushing, large pieces of coal gangue can be processed into products of different particle sizes, which can be used for roadbed filling, non-fired brick preparation, and manufactured sand production, thereby improving economic efficiency.

[0003] Existing coal gangue crushing typically requires belt conveyor feeding. Due to problems such as uneven feeding, belt misalignment, and high moisture content causing coal gangue to stick together, the coal gangue is prone to intermittent and uneven distribution during belt conveying. This can lead to situations where material accumulates too thickly in some areas of the belt, causing the single feeding amount to far exceed the design processing load of the crushing device inlet. This can result in blockages between the crushing parts and the feed inlet, jamming of the crushing blades or hammers, motor overload tripping, and even deformation and damage to vulnerable parts such as the hammers, thus reducing overall production efficiency to some extent. Summary of the Invention

[0004] The purpose of this invention is to provide a crushing device for coal mining to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a crushing device for coal mining, comprising a base, a feeding box, a crushing box, and crushing components disposed within the crushing box. The surface of the base is provided with a driving component for driving the crushing components to operate. A feeding box is slidably disposed on the top of the crushing box. A material passage hole is provided at the bottom of the feeding box for material to pass through. Feeding inclined blocks for guiding material are provided on both sides of the inner wall of the feeding box.

[0006] An adjustment component is disposed inside the feed box. The adjustment component includes a stop block that slides within the feed inclined block. A slider is fixedly connected to both sides of the stop block. A groove adapted to the slider is opened on the inner wall of the crushing box, and the groove is inclined. The crushing box is connected to the feed box via a hydraulic rod. When the hydraulic rod outputs and pushes the feed box upward, the distance between the crushed part and the feed hole increases, and the slider slides within the groove, causing the two opposing stops to move closer to each other.

[0007] Preferably, it also includes a guiding component disposed on the surface and inside the crushing box. The guiding component includes two guiding plates that slide inside the crushing box. Movable plates are fixedly connected to both sides of the guiding plates. A pressure block adapted to the movable plates is fixedly connected to the bottom of the feeding box.

[0008] Preferably, the movable plate is connected to the crushing box via a tension spring.

[0009] Preferably, the surface of the crushing box is provided with an auxiliary box adapted to the guide plate, and the bottom of the auxiliary box is provided with a discharge port for material to pass through.

[0010] Preferably, the inner wall of the discharge port is provided with several hooks.

[0011] Preferably, the driving component includes a drive motor disposed on the surface of the base, a drive wheel fixedly connected to the output end of the drive motor, and a driven wheel rotatably connected to the crushing component on one side of the crushing box, the drive wheel being connected to the driven wheel via a belt.

[0012] Preferably, a screening plate is fixedly connected to the inner wall of the crushing box, and the screening plate is located below the crushing parts.

[0013] Preferably, the crushing component includes, but is not limited to, a crushing hammer, a crushing blade, or a crushing roller.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When excessive feeding in a single batch causes blockage between the crushed parts and the feed hole in the feed box, this invention uses a hydraulic rod to lift the entire feed box, thereby increasing the relative distance between the crushed parts and the feed hole, increasing the capacity, and preventing the crushed parts from jamming and the motor from being damaged by a large amount of feeding in a short period of time. At the same time, the relative clamping of two blocks reduces the diameter of the feed hole, further reducing the amount of material passing through at this time, making it easier for the crushed parts in the crush box to digest the remaining coal gangue material in the crush box in a timely manner, effectively reducing the problems of blockage in the crush box and damage to the crushing components, and improving crushing efficiency.

[0016] This invention features movable guide plates. When there is blockage between the crushed part and the feed hole, the two guide plates move closer to each other and fit together, temporarily sealing the channel above the crushed part. Meanwhile, a large amount of material entering can be guided out through the inclined surface formed by the fit of the guide plates, avoiding continuous blockage and allowing sufficient time for the crushed part to process the remaining material, thus ensuring the stable operation of the crushing system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a cross-sectional view used to illustrate the driving component of the present invention;

[0019] Figure 3 This is a cross-sectional view used by the present invention to illustrate the internal structure of the crushing box and the feeding box;

[0020] Figure 4This is a schematic diagram illustrating the state of the feed box after it has been moved upwards as a whole, according to the present invention.

[0021] Figure 5 This is a schematic diagram illustrating the guide plate and its surrounding structure according to the present invention.

[0022] In the diagram: 1. Base; 11. Feed box; 12. Crushing box; 2. Drive motor; 21. Drive wheel; 211. Belt; 212. Driven wheel; 22. Crushed parts; 221. Screening plate; 3. Feed box; 31. Hydraulic rod; 32. Feeding inclined block; 321. Stop block; 322. Sliding block; 323. Slide groove; 4. Auxiliary box; 41. Discharge port; 411. Hook; 42. Guide plate; 421. Movable plate; 422. Pressing block; 423. Tension spring. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0024] This invention discloses a crushing device for coal mining, such as... Figure 1-5 As shown, the device includes a base 1, a feeding box 11, a crushing box 12, and crushing components 22 disposed within the crushing box 12. The surface of the base 1 is provided with a drive component for driving the crushing components 22. The crushing box 12 is installed on top of the feeding box 11 to facilitate the entry of crushed coal gangue into the feeding box 11. A conveyor belt or collection vehicle can be installed at the bottom of the feeding box 11 to collect and transport the crushed material. The crushing and feeding of the material are existing technologies and will not be described in detail here. A feeding box 3 slides on the top of the crushing box 12 and is entirely fitted on top of the crushing box 12 to facilitate its vertical sliding. The bottom of the feeding box 3 has a passage hole for material to pass through. Both sides of the inner wall of the feeding box 3 are provided with feeding inclined blocks 32 for guiding the material. The surface of the feeding inclined blocks 32 is a smooth inclined surface to facilitate the passage of coal gangue into the crushing box 12 at the bottom, where it is crushed by the crushing components 22.

[0025] In this embodiment, an adjustment component is also included, which is disposed inside the feed box 3. The adjustment component includes a stop block 321 that slides within the feed inclined block 32. Under normal conditions, the stop block 321 does not protrude from the feed inclined block 32, ensuring smooth feeding through the feed hole. Slider blocks 322 are fixedly connected to both sides of the stop block 321. The slider blocks 322 slide within the feed inclined block 32. The inner wall of the crushing box 12 is provided with a groove 323 that matches the slider block 322. The groove 323 is inclined, and one side of the slider block 322 is limited to slide within the groove 323. The crushing box 12 is connected to the feed box 3 via a hydraulic rod 31. The fixed end of the hydraulic rod 31 is disposed on the surface of the crushing box 12, while its output end is fixedly connected to the surface of the feed box 3. When the hydraulic rod 31 outputs and pushes the feed box 3 upward, the distance between the crushed part 22 and the feed hole increases, and the slider block 322 slides within the groove 323, causing the two opposing stop blocks 321 to move closer to each other.

[0026] Specifically, when excessive feeding in a single batch causes blockage between the crushed part 22 and the feed hole, the hydraulic rod 31 pushes the feed box 3 upward, raising the entire feed box 3. This increases the relative distance between the crushed part 22 and the feed hole, and increases the capacity, allowing the blocked material to continue moving. This facilitates continuous crushing of the crushed part 22 and prevents the crushed part 22 from jamming due to excessive feeding in a short period, as well as damage to the motor. Simultaneously, the upward movement of the feed box 3 during this process will also move the internal baffles. 321 moves upward synchronously, and the sliders 322 on both sides of the stop block 321 move upward relative to each other in the slide groove 323. With the help of the inclined limit of the slide groove 323, the stop block 321 moves towards the material passage hole. The two opposing stop blocks 321 will move closer to each other and reduce the diameter of the material passage hole, further reducing the material throughput at this time. At the same time, it can clamp the material passing through, making it stop or pass slowly, so that the crushing parts 22 in the crushing box 12 can digest the remaining coal gangue material in the crushing box 12 in time, improve crushing efficiency, and reduce damage rate.

[0027] In this embodiment, a guiding component is also included, disposed on the surface and inside the crushing chamber 12. The guiding component includes two guide plates 42 that slide inside the crushing chamber 12. The guide plates 42 are inclined upwards, and in a normal state, such as Figure 3As shown, it is positioned at the edge of the feed hole and will not affect the normal feeding of the feed hole. Movable plates 421 are fixedly connected to both sides of the guide plate 42. The movable plates 421 are triangular in shape. A pressure block 422 adapted to the movable plate 421 is fixedly connected to the bottom of the feed box 3. The pressure block 422 abuts against the inclined surface of the movable plate 421. The movable plate 421 is connected to the crushing box 12 through a tension spring 423. The two ends of the tension spring 423 are fixedly connected to the movable plate 421 and the crushing box 12 respectively. When the guide plate 42 is in the normal state, the pressure block 422 abuts against the inclined surface of the movable plate 421 near the bottom, so that one end of the guide plate 42 moves out of the crushing box 12 and stretches the tension spring 423.

[0028] Specifically, when excessive feeding in the feed box 3 causes blockage between the crusher 22 and the feed hole, the upward movement of the feed box 3 will cause the pressure block 422 at its bottom to move upward synchronously. In conjunction with the inclined surfaces of the pressure block 422 and the movable plate 421, under the rebound force of the tension spring 423, the guide plate 42 moves towards the interior of the crushing box 12. Consequently, the two opposing guide plates 42 approach each other, eventually reducing the distance between them to a point where the coal gangue material cannot pass through, or they are directly in contact. In this state, the coal gangue material... The material cannot pass through and fall into the crushing box 12, so the crushing components 22 in the crushing box 12 can prioritize the crushing of the remaining coal gangue material, reducing its short-term pressure. At the same time, the coal gangue material that continues to fall downward will roll to both sides through the inclined surface of the guide plate 42 until it is removed from both sides of the crushing box 12, avoiding excessive coal gangue from continuously blocking the box in a short period of time. Since the belt conveyor 211 continues to transport coal gangue material to the feed box 3 when there is a blockage, this measure can discharge the excess coal gangue material and improve the flowability.

[0029] The surface of the crushing box 12 is provided with an auxiliary box 4 adapted to the guide plate 42. The auxiliary box 4 surrounds the outside of the guide plate 42, protects the guide plate 42, and limits the coal gangue material guided by the guide plate 42 to prevent it from scattering. The bottom of the auxiliary box 4 is provided with a discharge port 41 for material to pass through. The discharge port 41 is used to discharge excess coal gangue material. The inner wall of the discharge port 41 is provided with several hooks 411 for hanging storage bags. The storage bags are used to collect the dropped coal gangue material. Subsequently, when there is less material in the crushing box 12, the coal gangue material in the storage bags can be put into the feed box 3 for crushing.

[0030] The driving component includes a drive motor 2 mounted on the surface of the base 1. The output end of the drive motor 2 is fixedly connected to a drive wheel 21. A driven wheel 212 connected to the crushing component 22 is rotatably connected to one side of the crushing box 12. The drive wheel 21 is connected to the driven wheel 212 via a belt 211. The output of the drive motor 2 drives the drive wheel 21 at its output end to rotate, and synchronously drives the driven wheel 212 to rotate via the transmission belt 211. The rotation of the driven wheel 212 synchronously drives the crushing component 22 to rotate, thereby crushing the coal gangue.

[0031] A screening plate 221 is fixedly connected to the inner wall of the crushing box 12. The screening plate 221 is located below the crushing component 22. The screening plate 221 is used to screen the crushed coal gangue particles. After reaching the target particle size, the particles will pass through the screening plate 221. Those that have not yet reached the target particle size will be blocked by the screening plate 221 and continue to be crushed by the crushing component 22.

[0032] The crushing component 22 includes, but is not limited to, a crushing hammer, a crushing blade, or a crushing roller. Different crushing components 22 are selected according to the different materials, hardness, and particle size of the coal gangue to improve the crushing applicability.

[0033] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention 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 embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A crushing device for coal mining, comprising a base (1), a feeding box (11), a crushing box (12), and crushing components (22) disposed within the crushing box (12), wherein the surface of the base (1) is provided with a driving component for driving the crushing components (22) to operate, characterized in that, The crushing box (12) has a sliding feed box (3) on top. The feed box (3) has a material passage hole at the bottom for material to pass through. The feed box (3) has feed inclined blocks (32) on both sides of the inner wall for guiding the material. An adjustment component is set inside the feed box (3). The adjustment component includes a stop block (321) that slides in the feed inclined block (32). A slider (322) is fixedly connected to both sides of the stop block (321). A groove (323) adapted to the slider (322) is opened on the inner wall of the crushing box (12). The groove (323) is inclined. The crushing box (12) is connected to the feed box (3) through a hydraulic rod (31). When the hydraulic rod (31) outputs and pushes the feed box (3) upward, the distance between the crushed part (22) and the feed hole increases, and the slider (322) slides in the groove (323), so that the two opposing stops (321) move closer to each other.

2. A coal mine crushing device according to claim 1, characterized in that: It also includes a guide assembly, which is disposed on the surface and inside the crushing box (12). The guide assembly includes two guide plates (42) that slide inside the crushing box (12). Movable plates (421) are fixedly connected to both sides of the guide plates (42). A pressure block (422) adapted to the movable plates (421) is fixedly connected to the bottom of the feed box (3).

3. A coal mine crushing device according to claim 2, characterized in that: The movable plate (421) is connected to the crushing box (12) by a tension spring (423).

4. A coal mine crushing device according to claim 2, characterized in that: The surface of the crushing box (12) is provided with an auxiliary box (4) adapted to the guide plate (42), and the bottom of the auxiliary box (4) is provided with a discharge port (41) for material to pass through.

5. A coal mine crushing device according to claim 3, characterized in that: The inner wall of the discharge port (41) is provided with several hooks (411).

6. The coal gangue crushing device for underground mining according to claim 1, characterized in that: The driving component includes a drive motor (2) disposed on the surface of the base (1). The output end of the drive motor (2) is fixedly connected to a drive wheel (21). A driven wheel (212) connected to the crushing component (22) is rotatably connected to one side of the crushing box (12). The drive wheel (21) is connected to the driven wheel (212) via a belt (211).

7. The coal gangue crushing device for underground mining according to claim 1, characterized in that: A screening plate (221) is fixedly connected to the inner wall of the crushing box (12), and the screening plate (221) is located below the crushing piece (22).

8. The coal gangue crushing device for underground mining according to claim 1, characterized in that: The crushing component (22) includes, but is not limited to, a crushing hammer, a crushing blade, or a crushing roller.

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