Coal bunker hanging hammer type self-rapping wall sticking prevention device

Abstract

The present application relates to the technical field of conveying equipment, and discloses a coal bunker hanging weight type self-hammering wall-hanging prevention device, which comprises a coal bunker, a coal inlet is arranged at the top of the coal bunker; a coal receiving plate and a hanging weight are arranged in the coal bunker, the coal receiving plate is located below the coal inlet and on the coal flow movement path, a transmission structure is arranged between the coal receiving plate and the hanging weight, the coal flow impacts the coal receiving plate to drive the transmission structure to move, the transmission structure drives the hanging weight to swing, and the hanging weight swings to knock the coal bunker, so that the vibration is transmitted to the bunker wall to prevent wall-hanging, the coal flow continuously impacts the coal receiving plate during falling to drive the transmission structure to link the hanging weight to swing, and then the hanging weight knocks the coal bunker periodically and transmits the vibration to the bunker wall, so that the self-excited knocking vibration effect without external power input is realized by using the kinetic energy of the coal flow as a driving source, and the wall-attached coal is loosened and peeled off under the excited vibration.

Description

Technical Field

[0001] This invention relates to the field of conveying equipment technology, and in particular discloses a coal bunker hanging hammer type self-impact anti-wall-hanging device. Background Technology

[0002] During actual operation, coal bunkers are prone to adhesion, hanging, and local arching phenomena on the inner surface of the bunker wall due to factors such as the impact of coal flowing freely falling at the coal inlet and changes in coal moisture content. Especially in the case of wet coal or uneven particle size, coal material is prone to gradually accumulate in the bunker and form a stable adhesion layer, which in turn affects the normal smooth flow of coal.

[0003] Existing technologies typically employ external vibrators, air cannons, or manual tapping to clear blockages. However, these methods suffer from issues such as indirect energy transfer paths, uncertain application locations, and significant impact on the overall structure of the coal bunker. Some methods also exhibit shortcomings such as unstable effects on the wet coal adhesion layer, high maintenance costs, and difficulty in achieving sustained action, leading to recurring problems of wall adhesion and arching.

[0004] Therefore, there is an urgent need for a structure that can utilize the impact energy of the coal flow itself to achieve self-excited drive and form a continuous periodic disturbance inside the coal bunker to improve coal delivery stability and reduce the frequency of human intervention. Summary of the Invention

[0005] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a coal bunker hanging hammer type self-impact anti-wall-hanging device.

[0006] To achieve the above objectives, the present invention provides a coal bunker hanging hammer type self-impacting anti-wall-hanging device, comprising a coal bunker with a coal inlet at the top; a coal receiving plate and a hanging hammer are provided inside the coal bunker, the coal receiving plate being located below the coal inlet and on the coal flow path, and a transmission structure being provided between the coal receiving plate and the hanging hammer. The coal flow impacts the coal receiving plate, causing the transmission structure to move, and the transmission structure causes the hanging hammer to swing. After the hanging hammer swings, it impacts the coal bunker, so that the vibration is transmitted to the bunker wall to achieve anti-wall-hanging.

[0007] Preferably, a fixed beam is provided inside the coal bunker. The fixed beam is located in the upper area of ​​the coal bunker to support the hanging hammer. The coal receiving plate is movably connected to the fixed beam or the coal bunker to receive the impact force of the coal flow. This structure is equivalent to building a stable force conversion benchmark inside the coal bunker, so that the coal receiving plate will not become unstable or shift when subjected to the impact of the coal flow. This ensures that the impact force can be stably transmitted to the subsequent transmission structure, avoiding force transmission distortion or loss of control of the hanging hammer due to excessive shaking of the coal receiving plate, and providing a reliable energy input basis for the entire self-excited striking process.

[0008] Preferably, the hammer includes a hammer body and a connecting part. The connecting part is located at the upper end of the hammer body and is connected to the fixed beam. The hammer body is made of metal or a metal material with an outer buffer layer. By designing the hammer as a hammer body structure with a connecting upper end and a mass concentration at the lower end, and using a metal or outer buffer layer material system, it has sufficient impact inertia during swinging without causing rigid damage to the silo wall. This achieves a balance between effective impact strength and structural durability, and maintains stable impact response characteristics during long-term operation.

[0009] Preferably, the coal bunker is equipped with a striking plate that works in conjunction with the hanging hammer. The striking plate is fixedly installed on the bunker wall and is located within the swing trajectory of the hanging hammer. When the hanging hammer swings back, it contacts and engages with the striking plate to transmit the impact vibration to the bunker wall. The striking plate acts as a local impact reinforcement zone, converting the point contact impact of the hanging hammer into a surface or local area load diffusion, so that the impact energy is more concentrated on the area of ​​the bunker wall that is prone to material accumulation. At the same time, it avoids the hanging hammer directly and repeatedly hitting the bunker wall, which would cause local wear and tear. This improves the vibration transmission efficiency and extends the service life of the bunker structure.

[0010] Preferably, the transmission structure includes a connecting member, which is a connecting rod. One end of the connecting member is fixedly connected to the coal receiving plate, and the other end of the connecting member is connected to the hanging hammer. The connecting member is located between the coal receiving plate and the hanging hammer and is used to transmit the movement of the coal receiving plate to the hanging hammer. The rigid connecting rod is used to transmit the movement of the coal receiving plate, so that the displacement generated by the coal flow impact can be transmitted to the hanging hammer through a deterministic mechanical path, thereby forming a direct mechanical linkage response. This method has strong action synchronization and is not easily affected by coal flow fluctuations, ensuring that the swing rhythm of the hanging hammer has a stable correspondence with the coal flow impact frequency.

[0011] Preferably, the transmission structure includes a connector, which is a pull rope. One end of the connector is fixedly connected to the coal receiving plate, and the other end is connected to the hammer. The connector is located between the coal receiving plate and the hammer and is used to transmit the movement of the coal receiving plate to the hammer. The movement of the coal receiving plate is transmitted through the flexible pull rope, so that the system has certain buffering and delay characteristics. When the coal flow impact is strong or the direction change is complex, it can avoid rigid impact causing the mechanism to jam. At the same time, it allows the hammer to generate a larger swing amplitude, thereby enhancing the adaptability to unstable coal flow conditions.

[0012] Preferably, the coal bunker is equipped with a limiting structure located on the swing path of the hammer and used in conjunction with the hammer to limit the swing range of the hammer. This structure physically constrains the movement trajectory of the hammer, ensuring that its swing does not exceed the effective striking range. On the one hand, it prevents the hammer from entering the ineffective swing zone and wasting energy, and on the other hand, it prevents the structure from colliding and going out of control due to overshoot, thereby ensuring that the striking action always acts on the effective area of ​​the bunker wall.

[0013] Preferably, the limiting structure is any one of the following: limiting rope, limiting block, or arc-shaped baffle. The limiting structure is connected to the fixed beam or the warehouse wall. Different limiting forms are adapted to different working conditions: the limiting rope provides flexible buffer to avoid excessive impact rigidity, the limiting block provides a clear mechanical termination position to prevent over-swinging, and the arc-shaped baffle is used to guide the swing trajectory of the hammer, making its movement more controllable and improving the consistency of repeated striking.

[0014] Preferably, an elastic element is provided between the coal receiving plate and the fixed beam. The two working ends of the elastic element are fixedly connected to the coal receiving plate and the fixed beam, respectively, and are used to drive the coal receiving plate to return to its initial position. The elastic element enables the coal receiving plate to quickly return to its initial position after being impacted by the coal flow, thereby ensuring that subsequent coal flow impacts can continue to trigger the transmission structure to move, avoiding permanent deformation or jamming of the coal receiving plate, and enabling the entire system to have continuous self-resetting capability.

[0015] Preferably, the coal receiving plate, connectors, hammer, and striking plate are all installed in the coal bunker using a detachable connection method. The components work together to form an anti-snagging structure that uses the flow energy of coal to drive the hammer to automatically strike the bunker wall. This design allows all key stress-bearing and wear-prone components to be replaced modularly, enabling maintenance of the device inside the coal bunker without disassembling the entire bunker structure. This also reduces the risk of machine downtime due to local wear and improves on-site maintenance efficiency and system availability.

[0016] The beneficial effects of this invention are: This technical solution involves installing a coal receiving plate located below the coal inlet and along the coal flow path within the coal bunker. A transmission structure is then installed between the receiving plate and the hanging hammer. As the coal flow falls, it continuously impacts the receiving plate, driving the transmission structure to cause the hanging hammer to swing. The hanging hammer then periodically strikes the coal bunker, transmitting the vibration to the bunker walls. This utilizes the kinetic energy of the coal flow itself as a driving source to achieve a self-excited impact vibration effect without external power input. This causes the coal adhering to the bunker walls to loosen and peel off under the excited vibration, preventing the gradual accumulation of wall adhesion and arching to form a stable blockage structure. Simultaneously, the coal flow continuously inputs energy into the system during its descent, creating intermittent impact disturbances. This achieves dynamic disruption and reconstruction of the internal flow boundary of the coal bunker, thereby improving the continuity of coal feeding and the stability of material flow while reducing the frequency of manual unblocking. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Fig. 1 This is a schematic diagram of the anti-wall-hanging device of the present invention; Fig. 2 This is a schematic diagram of the anti-wall-hanging device of the present invention.

[0018] The reference numerals in the figures include: 1. Fixed beam; 2. Coal inlet; 3. Coal flow; 4. Coal receiving plate; 5. Connecting parts; 6. Hammer; 7. Striking plate; 8. Bin wall; 9. Coal bin. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0020] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this invention is for describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0021] refer to Figs. 1-2 This invention discloses a coal bunker hanging hammer type self-impact anti-wall-hanging device, comprising a coal bunker 9, with a coal inlet 2 at the top of the coal bunker 9; a coal receiving plate 4 and a hanging hammer 6 are provided inside the coal bunker 9, the coal receiving plate 4 is located below the coal inlet 2 and on the movement path of the coal flow 3, and a transmission structure is provided between the coal receiving plate 4 and the hanging hammer 6. The coal flow 3 impacts the coal receiving plate 4, which drives the transmission structure to move, and the transmission structure drives the hanging hammer 6 to swing. After the hanging hammer 6 swings, it impacts the coal bunker 9, so that the vibration is transmitted to the bunker wall 8 of the coal bunker 9 to achieve anti-wall-hanging.

[0022] This technical solution involves installing a coal receiving plate 4 inside the coal bunker 9, located below the coal inlet 2 and along the path of the coal flow 3. A transmission structure is installed between the coal receiving plate 4 and the hanging hammer 6. As the coal flow 3 falls, it continuously impacts the coal receiving plate 4, driving the transmission structure to swing the hanging hammer 6. The hanging hammer 6 then periodically strikes the coal bunker 9 and transmits the vibration to the bunker wall 8. This utilizes the kinetic energy of the coal flow 3 itself as a driving source to achieve a self-excited impact vibration effect without external power input. This causes the coal material attached to the bunker wall 8 to loosen and peel off under the excited vibration, preventing the gradual accumulation of wall adhesion and arching to form a stable blockage structure. At the same time, the coal flow 3 continuously inputs energy into the system during its fall, creating intermittent impact disturbances. This achieves dynamic destruction and reconstruction of the internal flow boundary of the coal bunker 9, thereby improving the continuity of coal feeding and the stability of material flow, and reducing the frequency of manual unblocking.

[0023] Specifically, a fixed beam 1 is provided inside the coal bunker 9. The fixed beam 1 is located in the upper area of ​​the coal bunker 9 to support the hanging hammer 6. The coal receiving plate 4 is movably connected to the fixed beam 1 or the coal bunker 9 to receive the impact force of the coal flow 3. This structure is equivalent to building a stable force conversion benchmark inside the coal bunker 9, so that the coal receiving plate 4 will not become unstable or shift when subjected to the impact of the coal flow 3. This ensures that the impact force can be stably transmitted to the subsequent transmission structure, avoiding force transmission distortion or loss of control of the hanging hammer 6 due to excessive shaking of the coal receiving plate 4. This provides a reliable energy input basis for the entire self-excited striking process.

[0024] Specifically, the hammer 6 includes a hammer body and a connecting part. The connecting part is located at the upper end of the hammer body and is connected to the fixed beam 1. The hammer body is made of metal or metal with an outer buffer layer. By designing the hammer 6 as a hammer body structure with a connecting upper end and a mass concentration at the lower end, and using a metal or outer buffer layer material system, it has sufficient impact inertia during swinging without causing rigid damage to the bin wall 8. This achieves a balance between effective impact strength and structural durability, and maintains stable impact response characteristics during long-term operation.

[0025] Specifically, the coal bunker 9 is equipped with a striking plate 7 that works in conjunction with the hanging hammer 6. The striking plate 7 is fixedly installed on the bunker wall 8 and is located within the swing trajectory range of the hanging hammer 6. When the hanging hammer 6 swings back, it contacts and engages with the striking plate 7 to transmit the impact vibration to the bunker wall 8. The striking plate 7 serves as a local impact reinforcement zone, converting the point contact impact of the hanging hammer 6 into a surface or local area load diffusion, so that the impact energy is more concentrated on the area of ​​the bunker wall 8 that is prone to material accumulation. At the same time, it avoids the hanging hammer 6 from directly and repeatedly hitting the bunker wall 8, which could cause local wear and tear, thereby improving the vibration transmission efficiency and extending the service life of the bunker structure.

[0026] Specifically, the transmission structure includes a connecting member 5, which is a connecting rod. One end of the connecting member 5 is fixedly connected to the coal receiving plate 4, and the other end of the connecting member 5 is connected to the hanging hammer 6. The connecting member 5 is located between the coal receiving plate 4 and the hanging hammer 6, and is used to transmit the movement of the coal receiving plate 4 to the hanging hammer 6. The movement of the coal receiving plate 4 is transmitted by a rigid connecting rod, so that the displacement generated by the impact of the coal flow 3 can be transmitted to the hanging hammer 6 through a deterministic mechanical path, thereby forming a direct mechanical linkage response. This method has strong action synchronization and is not easily affected by coal flow fluctuations, ensuring that the swing rhythm of the hanging hammer 6 has a stable correspondence with the impact frequency of the coal flow.

[0027] Specifically, the transmission structure includes a connector 5, which is a pull rope. One end of the connector 5 is fixedly connected to the coal receiving plate 4, and the other end of the connector 5 is connected to the hammer 6. The connector 5 is located between the coal receiving plate 4 and the hammer 6 and is used to transmit the movement of the coal receiving plate 4 to the hammer 6. The movement of the coal receiving plate 4 is transmitted through the flexible pull rope, so that the system has certain buffering and delay characteristics. When the coal flow 3 has a strong impact or a complex change in direction, it can avoid rigid impact causing the mechanism to jam. At the same time, it allows the hammer 6 to produce a larger swing amplitude, thereby enhancing the adaptability to unstable coal flow conditions.

[0028] Specifically, a limiting structure is provided inside the coal bunker 9. The limiting structure is located on the swing path of the hammer 6 and works in conjunction with the hammer 6 to limit the swing range of the hammer 6. This structure physically constrains the movement trajectory of the hammer 6 so that its swing will not exceed the effective striking range. On the one hand, it prevents the hammer 6 from entering the ineffective swing zone and causing energy waste. On the other hand, it prevents the structure from colliding and losing control due to overshoot, thereby ensuring that the striking action always acts on the effective area of ​​the bunker wall 8.

[0029] Specifically, the limiting structure can be any one of the following: a limiting rope, a limiting block, or an arc-shaped baffle. The limiting structure is connected to the fixed beam 1 or the bin wall 8. Different limiting forms are adapted to different working conditions: the limiting rope provides flexible buffering to avoid excessive impact rigidity, the limiting block provides a clear mechanical termination position to prevent over-swinging, and the arc-shaped baffle is used to guide the swing trajectory of the hammer 6, making its movement more controllable and improving the consistency of repeated striking.

[0030] Specifically, an elastic element is provided between the coal receiving plate 4 and the fixed beam 1. The two working ends of the elastic element are fixedly connected to the coal receiving plate 4 and the fixed beam 1 respectively, and are used to drive the coal receiving plate 4 to return to its initial position. The elastic element enables the coal receiving plate 4 to quickly return to its initial position after being impacted by the coal flow 3, thereby ensuring that the subsequent coal flow impact can continue to trigger the action of the transmission structure, avoiding permanent deformation or jamming of the coal receiving plate 4, and enabling the entire system to have continuous self-resetting capability.

[0031] Specifically, the coal receiving plate 4, connecting piece 5, hanging hammer 6, and striking plate 7 are all installed in the coal bunker 9 using a detachable connection method. The components work together to form an anti-snagging structure that uses the kinetic energy of the coal flow 3 to drive the hanging hammer 6 to automatically strike the bunker wall 8. This design allows all key stress-bearing and wear-prone components to be replaced modularly, so that maintenance can be carried out inside the coal bunker 9 without disassembling the entire bunker structure. At the same time, it reduces the risk of the whole machine being shut down due to local wear and improves on-site maintenance efficiency and system availability.

[0032] In a further embodiment of the present invention, the impact intensity of the coal flow 3 on the coal receiving plate 4 is positively correlated with the swing response of the hammer 6. That is, when the flow rate or impact intensity of the coal flow 3 increases, the displacement amplitude of the coal receiving plate 4 increases accordingly, thereby enabling the hammer 6 to obtain greater swing energy through the transmission structure, and thus improving the hammer 6's striking intensity on the bin wall 8. When the coal flow 3 weakens or stops, the force on the coal receiving plate 4 decreases, and the hammer 6 gradually reduces its swing amplitude and tends to a stationary state under the action of its own weight and the action of the limiting structure. Thus, the device basically stops the striking action under no coal flow or low coal flow conditions, realizing an adaptive response to the input state of the coal flow 3.

[0033] Furthermore, the striking action in this invention is mainly concentrated in areas inside the coal bunker 9 that are prone to wall adhesion, arching, or sticking, such as the conical section, the narrowing section, or local corner areas. A striking plate 7 is provided on the corresponding bunker wall 8 so that the striking action of the hammer 6 is directed to the above-mentioned areas prone to blockage, thereby enhancing the input of local vibration energy, improving the efficiency of destroying the coal material adhesion layer in the initial wall adhesion stage, and preventing the wall adhesion structure from developing into an overall stable arching.

[0034] Furthermore, the present invention utilizes the continuous impact of coal flow 3 as an energy input source, so that the system is in a continuous working state when coal flow 3 is present, and gradually enters a low-frequency or shutdown state when coal flow 3 weakens or disappears, thereby achieving adaptive operation characteristics without external control conditions, reducing energy consumption and the number of ineffective knocks.

[0035] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A coal bunker hanging hammer type self-impact anti-wall-hanging device, comprising a coal bunker (9), wherein the top of the coal bunker (9) is provided with a coal inlet (2); characterized in that: The coal bunker (9) is equipped with a coal receiving plate (4) and a hanging hammer (6). The coal receiving plate (4) is located below the coal inlet (2) and on the path of the coal flow (3). A transmission structure is provided between the coal receiving plate (4) and the hanging hammer (6). The coal flow (3) impacts the coal receiving plate (4), which drives the transmission structure to move. The transmission structure drives the hanging hammer (6) to swing. After the hanging hammer (6) swings, it strikes the coal bunker (9) so that the vibration is transmitted to the wall (8) of the coal bunker (9) to prevent wall hanging.

2. The coal bunker hanging hammer type self-impact anti-wall-hanging device according to claim 1, characterized in that: The coal bunker (9) is equipped with a fixed beam (1) inside. The fixed beam (1) is located in the upper part of the coal bunker (9) to support the hanging hammer (6). The coal receiving plate (4) is movably connected to the fixed beam (1) or the coal bunker (9) to receive the impact force of the coal flow (3).

3. The coal bunker hanging hammer type self-impact anti-wall-hanging device according to claim 2, characterized in that: The hammer (6) includes a hammer body and a connecting part. The connecting part is located at the upper end of the hammer body and is connected to the fixed beam (1). The hammer body is made of metal or has a metal material covered with a buffer layer.

4. The coal bunker hanging hammer type self-impact anti-wall-hanging device according to any one of claims 1-3, characterized in that: The coal bunker (9) is equipped with a striking plate (7) that works with the hammer (6). The striking plate (7) is fixedly installed on the bunker wall (8). The striking plate (7) is located within the swing trajectory range of the hammer (6). When the hammer (6) swings back, it contacts and works with the striking plate (7) to transmit the impact vibration to the bunker wall (8).

5. The coal bunker hanging hammer type self-impact anti-wall-hanging device according to claim 4, characterized in that: The transmission structure includes a connecting member (5), which is a connecting rod. One end of the connecting member (5) is fixedly connected to the coal receiving plate (4), and the other end of the connecting member (5) is connected to the hammer (6). The connecting member (5) is located between the coal receiving plate (4) and the hammer (6) and is used to transmit the movement of the coal receiving plate (4) to the hammer (6).

6. The coal bunker hanging hammer type self-impact anti-wall-hanging device according to claim 1, characterized in that: The transmission structure includes a connector (5), which is a pull rope. One end of the connector (5) is fixedly connected to the coal receiving plate (4), and the other end of the connector (5) is connected to the hammer (6). The connector (5) is located between the coal receiving plate (4) and the hammer (6) and is used to transmit the movement of the coal receiving plate (4) to the hammer (6).

7. The coal bunker hanging hammer type self-impact anti-wall-hanging device according to claim 1, characterized in that: The coal bunker (9) is equipped with a limiting structure, which is located on the swing path of the hammer (6) and is used in conjunction with the hammer (6) to limit the swing range of the hammer (6).

8. The coal bunker hanging hammer type self-impact anti-wall-hanging device according to claim 7, characterized in that: The limiting structure is any one of the limiting rope, limiting block or arc baffle, and the limiting structure is connected to the fixed beam (1) or the warehouse wall (8).

9. The coal bunker hanging hammer type self-impact anti-wall-hanging device according to claim 2, characterized in that: An elastic element is provided between the coal receiving plate (4) and the fixed beam (1). The two working ends of the elastic element are fixedly connected to the coal receiving plate (4) and the fixed beam (1) respectively, and are used to drive the coal receiving plate (4) to return to its initial position.

10. The coal bunker hanging hammer type self-impact anti-wall-hanging device according to claim 5, characterized in that: The coal receiving plate (4), connector (5), hammer (6) and striking plate (7) are all installed in the coal bunker (9) in a detachable connection manner. The components work together to form an anti-wall-hanging structure that uses the kinetic energy of the coal flow (3) to drive the hammer (6) to automatically strike the bunker wall (8).

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