Coal mine anti-blocking coal bunker

Abstract

An anti-blocking coal bunker for a coal mine comprises a bunker body, a coal inlet formed in the top of the bunker body and a coal outlet bunker arranged at the bottom of the bunker body, a cylinder is vertically erected in an inner cavity of the bunker body, a plurality of sets of connecting arm frames which are of a cross-shaped arrangement structure are evenly arranged on the circumference of the cylinder from top to bottom, and the cylinder is fixed to the inner cavity of the bunker body through the connecting arm frames. Anti-blocking coal cleaning mechanisms used for stirring coal accumulated in the bin body are further evenly arranged on the cylinder from top to bottom. On the basis of the single structure of an existing coal bunker, the coal bunker structure is optimized and designed again, the cylinder, the connecting arm frame, the anti-blocking coal cleaning mechanism and other structures are introduced into the coal bunker, automatic and mechanical coal cleaning and dredging of the coal bunker are achieved, and the safety problem caused by coal bunker blocking is fundamentally solved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine equipment, in particular to an anti-blocking coal bunker in a coal mine. Background Art

[0002] In recent years, coal mine bunker safety accidents have occurred frequently. The main reason is that the existing coal bunker structure is single. The coal and water stored in the coal bunker will gather and congest after accumulating for a certain period of time, resulting in the coal in the coal bunker being unable to be discharged smoothly after the coal outlet at the bottom of the coal bunker is opened. In the face of this situation, there are currently two main operating methods. One is to manually enter the coal bunker from the top entrance of the coal bunker and use cleaning tools to poke and dredge the coal that is clumping. The process is not only very time-consuming and laborious, but also poses a great threat to the life safety of the cleaning personnel. It is very easy for people to fall into the coal pile and be buried in the coal, causing major safety accidents; the other method is to fill a small amount of explosives into the internal opening at the coal bunker outlet, and rely on the explosive force generated by detonating the explosives to dredge the coal out, but the effect is limited, and it is often necessary to cooperate with personnel standing at the lower side of the coal outlet to assist in dredging with dredging tools. The safety of the operator still has great hidden dangers. It is very easy for coal to be suddenly discharged and fall on personnel, causing major safety accidents, and this method is also very easy to cause damage to the coal bunker structure. At present, the above two ways to solve coal seam blockage are the main causes of coal bunker safety accidents. To this end, the State Administration of Mine Safety issued the "Notice on Further Strengthening the Safety Management of Coal Mine Bunkers" Mine Safety

[2024] No. 10 on March 14, 2024, which made special guidance opinions on the safety issues of coal mine bunkers, and made special guidance and requirements from the aspects of strengthening the safety management of coal seams in coal mines, accelerating the design optimization and mechanized transformation of coal bunkers, and strengthening the daily management and maintenance of coal bunkers, aiming to solve a series of safety problems caused by blockage in coal mine bunkers.

[0003] Based on this, the applicant, in accordance with the spirit of the above-mentioned "Notice", has carried out targeted optimization design of the structure of the coal bunker to address the above-mentioned safety accidents caused by coal bunker blockage, aiming to solve the above-mentioned long-standing coal bunker safety problems. Summary of the invention

[0004] In order to solve the safety problem of coal bunker caused by coal bunker blockage, the purpose of the present invention is to propose a coal bunker that prevents blockage in coal mines. The coal bunker structure is re-optimized and designed based on the single structure of the existing coal bunker. Structures such as cylindrical columns, connecting arms and anti-blockage coal cleaning mechanisms are introduced into the coal bunker, thereby realizing automatic mechanized coal cleaning and dredging of the coal bunker, fundamentally solving the safety problem caused by coal bunker blockage.

[0005] Specifically, the technical solution proposed by the present invention is as follows:

[0006] A coal bunker for preventing blockage in a coal mine comprises a bunker body, a coal inlet arranged on the top of the bunker body and a coal outlet bunker at the bottom; a cylinder is vertically arranged in the inner cavity of the bunker body, a plurality of groups of connecting arms in a "cross" arrangement structure are evenly arranged on the circumference of the cylinder from top to bottom, and the cylinder is fixed to the inner cavity of the bunker body by the plurality of connecting arms, wherein anti-blockage coal cleaning mechanisms for moving coal accumulated in the bunker body are also evenly arranged on the cylinder from top to bottom.

[0007] As a preferred solution of the above technical solution, the coal discharge bin is a single-cone cylinder structure with a single coal discharge port or a multi-cone cylinder structure with multiple coal discharge ports.

[0008] As a preferred solution of the above technical solution, a sealing valve plate that can be opened and closed is provided at the coal outlet at the bottom of the coal outlet bin.

[0009] As a preferred solution of the above technical solution, ladders are evenly arranged on the column, and the column and the coal inlet are staggered.

[0010] As another preferred embodiment of the above technical solution, the anti-blocking coal cleaning mechanism includes a sleeve, a rotating drum, a swing chain and a driving motor. The sleeve is sleeved on the column, the rotating drum is rotatably sleeved on the outer circumference of the sleeve through a bearing, the swing chain is connected to the circumferential wall of the rotating drum, the inner circumference of the rotating drum is provided with an internal rack, the driving motor is hidden in the inner cavity of the column, and is meshed with the internal rack through a gear arranged on the top thereof.

[0011] As a preferred scheme of the above technical scheme, avoidance holes are opened at the positions of the inner rack on the circumferential wall of the sleeve, and matching openings are also opened at the positions of the column corresponding to the avoidance holes. A cross plate for fixing the drive motor is provided on the bottom wall of the avoidance hole, and one end of the cross plate is horizontally fixed to the bottom wall of the avoidance hole, and the other end extends through the opening into the inner cavity of the column to be connected with the drive motor.

[0012] As a preferred solution of the above technical solution, a driven gear is arranged on the top of the transverse plate, and the driven gear is located between the inner rack and the gear and is respectively meshed with the two.

[0013] As a preferred solution of the above technical solution, a coal-moving block is provided at the tail end of the swing chain.

[0014] As another preferred solution of the above technical solution, a hinge ear is provided on the top of the sleeve, and a lifting cylinder corresponding to the hinge ear is provided on the upper side of each sleeve on the column, and the telescopic rod at the bottom of the lifting cylinder is connected to the hinge ear to drive the anti-blocking coal cleaning mechanism to achieve lifting and lowering displacement.

[0015] As a preferred solution of the above technical solution, the top of the silo body is provided with protective guardrails around the coal inlet, and a walking frame is provided on the top of the silo body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] First, based on the existing coal bunker structure, the present invention adds a column structure in the inner cavity of the coal bunker by erecting a connecting arm. The role of the column is mainly reflected in two aspects. First, various lines and pipelines can be filled in the inner cavity of the column, which provides a physical structural basis for the mechanization, automation and intelligence of the coal bunker; second, the existence of the column and the connecting arm can naturally form an artificial passage or artificial platform in the inner cavity of the coal bunker. Construction operators can use the ladder on the column to conveniently enter and exit the coal bunker, and the connecting arm provides a platform for operators to stand and operate, which greatly facilitates the maintenance and management of subsequent mechanization and automation equipment in the coal bunker.

[0018] Secondly, the present invention further sets up an anti-blocking coal-cleaning mechanism on the basis of the cylinder. The core structure of the mechanism lies in the sleeve and the rotating drum. The combination of the two is powered by a driving motor and cooperates with a swing chain to rotate and swing at various suitable speeds in the coal bunker. The swing chain is used to move and guide the coal gathered in the coal bunker, thereby achieving the effect of preventing the coal bunker from being blocked. Moreover, each anti-blocking coal-cleaning mechanism works independently of each other. In practice, an automatic control program is embedded, so that the automatic and mechanized clearing and unblocking of the coal bunker can be achieved through remote control.

[0019] Third, on the basis of the above core structure, by further adding a camera probe to the cylinder, unmanned exploration operations inside the coal bunker can be completed. In addition, high-pressure air outlet nozzles and high-pressure jet nozzles can be added to the cylinder column, and water and air supply can be achieved through high-pressure air ducts and high-pressure water pipes filled in the inner cavity of the cylinder column. It can cooperate with the anti-blocking coal cleaning mechanism to complete efficient coal bunker cleaning operations.

[0020] Fourthly, the anti-blocking coal bunker of the present invention realizes mechanization, automation and robotization transformation, and on this basis realizes unmanned operation, which effectively solves the current coal bunker safety problem caused by coal bunker blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the cylinder column, connecting arm and anti-blocking coal cleaning mechanism of the present invention;

[0023] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at the middle mark;

[0024] Figure 4 It is a schematic diagram of the assembly structure of the anti-blocking coal cleaning mechanism;

[0025] Figure 5 It is a schematic diagram of the structure of the anti-blocking coal cleaning mechanism;

[0026] Figure 6 This is a cross-sectional rendering of the anti-blocking coal cleaning mechanism;

[0027] Figure 7 It is a structural schematic diagram of Example 2;

[0028] Figure 8 Schematic diagram of the internal assembly structure of Example 2.

[0029] Markings in the figure: 1. Bin body, 2. Coal inlet, 3. Coal outlet, 31. Sealing valve plate, 4. Column, 41. Ladder, 42. Opening, 5. Connecting arm, 6. Sleeve, 61. Avoidance hole, 62. Hinged ear, 7. Rotating drum, 71. Bearing, 72. Internal rack, 8. Throwing chain, 81. Coal block, 9. Driving motor, 91. Gear, 10. Cross plate, 11. Driven gear, 12. Lifting cylinder, 13. Traveling frame, 14. Camera probe, 15. High-pressure air outlet nozzle, 16. High-pressure jet nozzle, 17. High-pressure air duct, 18. High-pressure water pipe, 19. Circuit pipe, 20. Oil pipe, 21. Solenoid valve. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further explained below in conjunction with specific implementation methods.

[0031] Example 1

[0032] As shown in the figure, the present embodiment discloses a coal mine anti-blocking coal bunker, comprising a bunker body 1, a coal inlet 2 arranged at the top of the bunker body 1 and a coal outlet bunker 3 at the bottom. The top of the bunker body 1 is provided with a protective guardrail around the coal inlet 2, and a walking frame 13 is provided on the top of the bunker body 1. The coal outlet bunker 3 is a single-cone cylinder structure with a single coal outlet or a multi-cone cylinder structure with multiple coal outlets. Under normal circumstances, the bunker opening with a single cone cylinder structure is the most common. In this embodiment, in order to distinguish the illustration, the coal outlet bunker 3 is illustrated as a double-cone cylinder structure; an openable and closable sealing valve plate 31 is provided at the coal outlet at the bottom of the coal outlet bunker 3, and the sealing valve plate 31 is consistent with the existing coal bunker outlet valve plate structure; a cylinder column 4 is vertically arranged in the inner cavity of the bunker body 1, and the cylinder column 4 is staggered with the coal inlet 2, and climbing Ladder 41, the circumference of the cylinder 4 is evenly provided with multiple groups of connecting arms 5 in a "cross" arrangement structure from top to bottom, the cylinder 4 is fixed to the inner cavity of the bin body 1 by the multiple groups of connecting arms 5, and the cylinder 4 is also evenly provided with anti-blocking coal cleaning mechanisms for moving the coal accumulated in the bin body 1 from top to bottom; wherein, the anti-blocking coal cleaning mechanism includes a sleeve 6, a rotating drum 7, a swing chain 8 and a driving motor 9, the sleeve 6 is sleeved on the cylinder 4, the rotating drum 7 is rotatably sleeved on the outer periphery of the sleeve 6 through a bearing 71, the swing chain 8 is connected to the circumferential wall of the rotating drum 7, the inner circumference of the rotating drum 7 is provided with an inner rack 72, the driving motor 9 is hidden in the inner cavity of the cylinder 4, and is driven and meshed with the inner rack 72 through a gear 91 arranged on the top thereof.

[0033] Furthermore, in this embodiment, each set of connecting arms 5 is composed of four I-beams, and connecting plates are welded at both ends of each I-beam, which are respectively connected to the inner wall of the warehouse body 1 and the outer wall of the cylinder 4 by bolts. Since the position of the cylinder 4 is not at the center of the inner cavity of the warehouse body 1, the lengths of the four I-beams are also different. Figure 1 and Figure 2 It can be seen in.

[0034] The column 4 and the connecting arm 5 form the main anti-blocking structural components of the inner cavity of the silo 1. As mentioned above, the two play different roles respectively. Not only can various lines and pipelines be filled in the inner cavity of the column 4, but also a physical structural basis is provided for the mechanization, automation and intelligence of the coal bunker. In addition, the existence of the column 4 and the connecting arm 5 can naturally form an artificial passage or artificial platform in the inner cavity of the coal bunker. Construction operators can use the ladder 41 on the column 4 to conveniently enter and exit the coal bunker, and the connecting arm 5 provides a platform for operators to stand and operate, which greatly facilitates the maintenance and management of the subsequent mechanization and automation equipment of the coal bunker.

[0035] In addition to the column 4 and the connecting arm 5, another core anti-blocking structural component of this embodiment is the anti-blocking coal cleaning mechanism.

[0036] Figure 3-6 The assembly and connection structure of the anti-blocking coal cleaning mechanism is given. Combined with the above-mentioned drawings, it plays two core roles in the anti-blocking coal cleaning mechanism. One is to drive the rotating drum 7 to rotate by driving the motor 9, and the rotating drum 7 further drives the swing chain 8 to swing. While the swinging chain 8 is swinging, it can move and guide the coal stored near it to achieve the anti-blocking effect; the second is the lifting and displacement. This structure is actually designed to cooperate with the swinging of the swing chain 8, mainly to make the rotation and swinging height of the swing chain 8 match the height of the coal stored near it, in order to achieve the best moving and guiding effect.

[0037] In addition, each group of anti-blocking coal cleaning mechanisms works independently of each other, that is, each drive motor 9 works independently and is not related to each other. In practice, it is also necessary to connect circuit pipelines and embed automatic control programs to achieve the purpose of remotely controlling the operation of the drive motor 9, so that the coal bunker can be completely unmanned, automated and mechanized. The automatic control program modules are all implemented using existing technologies, which are not innovative in themselves and do not involve the structural invention of the present invention. Therefore, the embodiments of the present invention and the accompanying drawings are not repeated or illustrated.

[0038] More specifically, regarding the rotating structure of the drum 7:

[0039] like Figure 4-5 As shown, the circumferential wall of the sleeve 6 is provided with a avoidance hole 61 at the position corresponding to the inner rack 72, and the column 4 is also provided with a matching opening 42 at the position corresponding to the avoidance hole 61. The avoidance hole 61 and the opening 42 are consistent in position and size, wherein a horizontal plate 10 for fixing the drive motor 9 is provided on the bottom wall of the avoidance hole 61. The avoidance hole 61 is for the convenience of installing the horizontal plate 10, and the opening 42 mainly serves to leave space for the overall up and down lifting of the anti-blocking coal cleaning mechanism, that is, the upper and lower opening sizes of the opening 42 are the up and down lifting position stroke of the anti-blocking coal cleaning mechanism. One end of the horizontal plate 10 is horizontally fixed at the bottom wall of the avoidance hole 61, and the other end passes through the opening 42 and extends into the inner cavity of the column 4 to connect with the drive motor 9.

[0040] In addition, a driven gear 11 is provided on the top of the horizontal plate 10, and the driven gear 11 is located between the inner rack 72 and the gear 91, and is respectively in transmission engagement with the two. A rotating shaft is provided on the top of the horizontal plate 10, which is directly connected to the driven gear 11, and the rotating shaft on the top of the driving motor 9 is penetrated on the horizontal plate 10, and the top of the rotating shaft is connected to the gear 91 after passing through, the driving motor 9 drives the gear 91 to rotate, the gear 91 drives the driven gear 11 to rotate, and the driven gear 11 further drives the inner rack 72 to rotate, and then drives the rotating drum 7 to rotate.

[0041] like Figure 5 As shown, the inner diameter of the rotating drum 7 is larger than the outer diameter of the sleeve 6 to facilitate the installation of a ball bearing between the two. The top circumference of the rotating drum 7 is integrally connected to a top cover with a center hole, and the inner diameter of the center hole of the top cover just matches the inner diameter of the sleeve 6 to achieve the effect of sealing connection between the top of the rotating drum 7 and the sleeve 6. At the same time, in order to fix the relative position between the sleeve 6 and the rotating drum 7, a circle of grooves is provided on the inner circumferential wall of the top cover, and a circle of snap rings matching the grooves is provided at the corresponding position of the outer circumferential wall of the sleeve 6. The grooves and the snap rings are interlocked to form a limitation on the relative position between the sleeve 6 and the rotating drum 7. During the lifting process, the sleeve 6, the rotating drum 7 and the driving motor 9 are also lifted and lowered as a whole, and their relative positions remain unchanged.

[0042] About the lifting structure of the anti-blocking coal cleaning mechanism:

[0043] like Figure 4 As shown, a plurality of convex ridges that are in close contact with the column 4 and are convenient for sliding and lifting are evenly and vertically arranged on the inner circumferential wall of the sleeve 6, a hinge ear 62 is provided on the top of the sleeve 6, and a lifting cylinder 12 corresponding to the hinge ear 62 is provided on the upper side of each sleeve 6 on the column 4, and the telescopic rod at the bottom of the lifting cylinder 12 is connected to the hinge ear 62 to drive the anti-blocking coal cleaning mechanism to achieve lifting and lowering displacement.

[0044] In this embodiment, in order to optimize the moving and guiding effect of the swing chain 8, a coal-moving block 81 is provided at the tail end of the swing chain 8. The structure of the coal-moving block 81 can be various, such as a plate structure, a block structure, a spherical structure, etc. It itself needs to have a certain weight, so it is preferably made of metal material such as steel.

[0045] Example 2

[0046] The technical solution of this embodiment is basically the same as that of the above embodiment, the only difference is that: Figure 7 , 8 As shown, the column 4 is provided with a high-pressure air outlet nozzle 15, a high-pressure jet nozzle 16 and a camera probe 14 located on the upper side of each group of anti-blocking and coal-cleaning mechanisms along the circumference of the column 4; at the same time, the inner cavity of the column 4 is also filled with a high-pressure air duct 17 connected to the high-pressure air outlet nozzle 15 and a high-pressure water pipe 18 connected to the high-pressure jet nozzle 16 in addition to the circuit tube 19 and the oil tube 20.

[0047] The high-pressure air outlet nozzle 15 and the high-pressure jet nozzle 16 respectively spray high-pressure wind and high-pressure water at the circumference of the column 4, which can not only cooperate with the swing chain 8 to loosen the stored coal at the corresponding height, but also clean the inner wall of the coal bunker after unloading the coal to avoid a large amount of coal adhering to the inner wall of the coal bunker and being unable to be discharged.

[0048] Structurally, the high-pressure air outlet nozzle 15 and the high-pressure air duct 17, as well as the high-pressure jet nozzle 16 and the high-pressure water pipe 18 are connected through branch pipes, and the branch pipes are provided with solenoid valves 21 for controlling the opening and closing of the branch pipes and the flow rate. In addition, a plurality of camera probes 14 are evenly distributed around the circumference of the cylinder 4, and a protective cover is provided on the exposed portion of the camera probe 14 to protect the camera probe 14, so that the situation inside the coal bunker can be monitored at any time from the outside. In practical use, the camera probe 14 and the solenoid valve 21 need to be connected to the automatic control system and controlled centrally and uniformly by the automatic control terminal. The relevant automatic control technologies are all completed using existing technologies, which will not be described in detail here.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been described as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to the above-mentioned technical contents without departing from the scope of the technical solution of the present invention, which are equivalent embodiments of equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A coal mine anti-blocking coal bunker, characterized by: The invention comprises a bin body (1), a coal inlet (2) arranged at the top of the bin body (1), and a coal outlet bin (3) at the bottom. A cylinder (4) is vertically mounted in the inner cavity of the bin body (1). A plurality of groups of connecting arms (5) arranged in a "cross" structure are evenly arranged on the circumference of the cylinder (4) from top to bottom. The cylinder (4) is fixed to the inner cavity of the bin body (1) through the plurality of connecting arms (5). Anti-blocking and coal-cleaning mechanisms for moving coal accumulated in the bin body (1) are also evenly arranged on the cylinder (4) from top to bottom.

2. The anti-blocking coal bunker of a coal mine according to claim 1, characterized in that: The coal outlet bin (3) is a single-cone cylinder structure with a single coal outlet or a multi-cone cylinder structure with multiple coal outlets.

3. The anti-blocking coal bunker of a coal mine according to claim 1, characterized in that: A sealing valve plate (31) that can be opened and closed is provided at the coal outlet at the bottom of the coal outlet bin (3).

4. The anti-blocking coal bunker of a coal mine according to claim 1, characterized in that: Ladders (41) are evenly arranged on the cylinder (4), and the cylinder (4) and the coal inlet (2) are staggered.

5. The anti-blocking coal bunker of a coal mine according to claim 1, characterized in that: The anti-blocking coal cleaning mechanism comprises a sleeve (6), a rotating drum (7), a chain (8) and a driving motor (9); the sleeve (6) is sleeved on the cylinder (4); the rotating drum (7) is rotatably sleeved on the outer circumference of the sleeve (6) through a bearing (71); the chain (8) is connected to the circumferential wall of the rotating drum (7); an inner rack (72) is provided on the inner circumference of the rotating drum (7); the driving motor (9) is hidden in the inner cavity of the cylinder (4) and is in transmission meshing engagement with the inner rack (72) through a gear (91) provided on the top thereof.

6. A coal mine anti-blocking coal bunker as claimed in claim 5, characterized in that: The sleeve (6) is provided with avoidance holes (61) at positions corresponding to the inner rack (72) on the circumferential wall, and the column (4) is also provided with matching openings (42) at positions corresponding to the avoidance holes (61). A transverse plate (10) for fixing the drive motor (9) is provided on the bottom wall of the avoidance hole (61), and one end of the transverse plate (10) is horizontally fixed to the bottom wall of the avoidance hole (61), and the other end passes through the opening (42) and extends into the inner cavity of the column (4) to be connected to the drive motor (9).

7. A coal mine anti-blocking coal bunker as claimed in claim 6, characterized in that: A driven gear (11) is provided on the top of the transverse plate (10); the driven gear (11) is located between the inner rack (72) and the gear (91), and is respectively in transmission meshing engagement with the two.

8. The anti-blocking coal bunker of a coal mine as claimed in claim 5, characterized in that: A coal-moving block (81) is arranged at the tail end of the swing chain (8).

9. The anti-blocking coal bunker of a coal mine according to claim 5, characterized in that: The top of each sleeve (6) is provided with a hinge ear (62), and a lifting cylinder (12) corresponding to the hinge ear (62) is provided on the upper side of each sleeve (6) on the column (4), and a telescopic rod at the bottom of the lifting cylinder (12) is connected to the hinge ear (62) to drive the anti-blocking coal cleaning mechanism to achieve lifting displacement.

10. The anti-blocking coal bunker of a coal mine according to claim 1, characterized in that: The top of the silo (1) is located at the coal inlet (2) and is surrounded by protective guardrails, and a walking frame (13) is provided on the top of the silo (1).

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