Underground coal bunker unblocking device

Abstract

The utility model discloses an underground coal bunker unblocking device, and relates to the technical field of coal bunker unblocking. The device comprises a supporting assembly, a drill rod assembly and a cleaning assembly. The supporting assembly comprises an electric hoist, a large-torque servo speed reduction all-in-one machine, a rotary suspension box, an annular sliding rail and a telescopic rod. The drill rod assembly comprises a drill rod, a winch and an air pump. The cleaning assembly comprises a rotating arm, a telescopic supporting rod, a high-pressure nozzle and a high-pressure pump station. According to the utility model, the drill rod assembly and the cleaning assembly are combined to clean the coal bunker, so that large impact on the bunker body is avoided, coal dust explosion hazard is avoided, and the coal bunker cleaning device has the advantages of safety, reliability, large energy, low energy consumption, simplicity in operation and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of coal bunker plugging removal, in particular to an underground coal bunker plugging removal device. Background Technique

[0002] As a chamber for temporarily storing coal underground in a coal mine, the underground coal bunker is one of the important components in coal mine construction. The storage and throughput of the underground coal bunker are important links in the coal mine production process, an indispensable key part in the coal mine production and transportation, and play a decisive role in the production capacity of the coal mine. Especially with the continuous improvement of the fully mechanized coal mining degree and the continuous realization of centralized production in the mining area, the capacity of the coal bunker gradually increases and the use efficiency is also getting higher and higher. However, during the production and use process of the mining area coal bunker, there are plugging problems such as jamming, arching, wall sticking, and structural blockage to varying degrees. Once a failure occurs, the coal bunker often cannot carry out raw coal transportation for at least several hours or at most several days. This not only fails to give full play to the due role of the coal bunker, but also seriously affects the production efficiency, and even causes production stoppage, causing huge economic losses to the enterprise.

[0003] At present, coal mines generally use methods such as air cannons for vibration and high-pressure water flushing to clean underground coal bunkers. However, due to equipment and space limitations, these methods result in very poor plugging removal effects, and the plugging problems cannot be completely solved. Therefore, during the production process, it is necessary to carry out auxiliary manual cleaning into the bunker or explosive blasting cleaning. These bunker cleaning methods have low efficiency, long construction periods, high risks, large investments, and complex process layouts, and cannot fundamentally solve the bunker plugging problem.

[0004] Therefore, in view of the above problems, it is necessary to design a safer and more effective coal bunker plugging removal device to achieve efficient and safe cleaning of underground coal bunkers. Content of the Utility Model

[0005] In view of the above problems, the utility model discloses an underground coal bunker plugging removal device, which can clean the coal bunker without personnel entering the bunker for operation, reducing the labor intensity of workers. At the same time, it will not cause a large impact on the bunker body and there is no risk of coal dust explosion, and has the advantages of safety, reliability, large energy, low energy consumption, and simple operation.

[0006] An underground coal bunker plugging removal device proposed according to the purpose of the utility model includes a support assembly, a drill rod assembly, and a cleaning assembly;

[0007] The support assembly includes an electric hoist, a high-torque servo reduction integrated machine, a rotating suspension box, a circular ring slide rail, and a telescopic rod; the electric hoist is arranged at the top of the coal bunker, the high-torque servo reduction integrated machine is suspended in the coal bunker by the electric hoist, its output end is connected to the rotating suspension box, the circular ring slide rail is arranged outside the rotating suspension box, at least two sliders matching the circular ring slide rail are symmetrically arranged on the rotating suspension box, and the rotating suspension box makes a semi-circular reciprocating rotation in the circular ring slide rail under the drive of the high-torque servo reduction integrated machine; the telescopic rods are at least two symmetrically arranged on the outer periphery of the circular ring slide rail;

[0008] The drill rod assembly includes a drill rod, a winch, and an air pump; one end of the drill rod is arranged in the rotating suspension box, the other end extends out of the rotating suspension box, and a drill bit is arranged at the end, and a claw-shaped structure is arranged on the drill bit; the winch is fixedly installed on the support platform fixedly arranged in the rotating suspension box, and a steel wire rope is arranged at its output end to connect the drill rod; the air pump is also installed on the support platform and is connected to the drill rod through a high-pressure explosion-proof air pipe;

[0009] The cleaning assembly includes a rotating arm, a telescopic support rod, a high-pressure nozzle, and a high-pressure pump station; one end of the rotating arm is hinged to the outer wall of the rotating suspension box, and the other end is connected to the high-pressure nozzle; the telescopic support rod is arranged below the rotating arm, one end is hinged to the outer wall of the rotating suspension box, and the other end is hinged to the rotating arm to drive the rotating arm to swing up and down for cleaning; the high-pressure pump station is connected to the high-pressure nozzle through a high-pressure wear-resistant hose, and the water flow in the high-pressure pump station is conveyed to the high-pressure nozzle through the high-pressure wear-resistant hose and sprayed out.

[0010] Preferably, the telescopic rod is a multi-stage hydraulic telescopic rod, and the multi-stage hydraulic telescopic rod is powered by a first hydraulic pump installed on the circular ring slide rail; the multi-stage hydraulic telescopic rods are multiple circumferentially uniformly distributed along the outer circular ring slide rail, and an anti-slip pad is fixedly connected to one end of each multi-stage hydraulic telescopic rod away from the circular ring slide rail.

[0011] Preferably, the sliders are multiple circumferentially uniformly distributed along the rotating suspension box.

[0012] Preferably, an image collector is fixed at the lower end of the circular ring slide rail, the image collectors are multiple circumferentially uniformly distributed along the circular ring slide rail, and a protective cover is sleeved outside the image collector.

[0013] Preferably, a limiter is further arranged inside the rotating suspension box, the limiter is circular and fixed at the bottom of the rotating suspension box, and the drill rod passes through the limiter and extends out of the rotating suspension box.

[0014] Preferably, the claw-shaped structure is hinged to the drill bit, is inclined upward, and a return spring is connected between the claw-shaped structure and the drill bit, and the claw-shaped structures are multiple circumferentially uniformly distributed along the drill rod.

[0015] Preferably, a plurality of the rotating arms and the corresponding telescopic support rods are circumferentially and uniformly distributed along the rotating suspension box; the telescopic support rods are hydraulic telescopic support rods, and are powered by a second hydraulic pump installed in the rotating suspension box; the high-pressure wear-resistant hose includes a main hose and branch hoses, the number of the branch hoses corresponds to the number of the high-pressure nozzles, the main hose is communicated with each branch hose, the main hose is connected to the high-pressure pumping station, and the branch hoses are respectively connected to the high-pressure nozzles through the rotating arms.

[0016] Compared with the prior art, the advantages of an underground coal bunker clogging clearing device disclosed by the present utility model are as follows:

[0017] (1) All operations of the present utility model are carried out at the top of the coal bunker, which is safe, efficient, practical, and has a high degree of automation; personnel can clean the coal bunker without entering the bunker for operation, reducing the labor intensity of workers and saving costs.

[0018] (2) The present utility model combines the drill pipe assembly and the cleaning assembly to realize the clogging clearing of the coal bunker, which will neither cause a large impact on the bunker body nor pose a hazard of coal dust explosion, and has the advantages of safety, reliability, large energy, low energy consumption, and simple operation.

[0019] (3) The present utility model is provided with an image collector, which can view the internal situation of the coal bunker in real time and transmit the information to the central processing unit. The central processing unit controls the working state of the device, and can realize the full-automatic cleaning of the coal bunker, which can avoid potential accident risks of personnel and improve the cleaning efficiency at the same time. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0021] Figure 1 It is the overall schematic diagram of the present utility model.

[0022] Figure 2 It is the internal structure schematic diagram of the rotating suspension box.

[0023] Figure 3 It is the top view of the present utility model.

[0024] In the figure: 1 - electric hoist; 2 - large torque servo reduction integrated machine; 3 - telescopic rod; 4 - anti-slip pad; 5 - image collector; 6 - rotating suspension box; 7 - first hydraulic pump; 8 - circular ring slide rail; 9 - rotating arm; 10 - high-pressure nozzle; 11 - telescopic support rod; 12 - drill pipe; 13 - claw-shaped structure; 14 - drill bit; 15 - high-pressure pump station; 16 - air pump; 17 - support platform; 18 - winch; 19 - high-pressure explosion-proof air pipe; 20 - steel wire rope; 21 - limiter; 22 - second hydraulic pump; 23 - slider. Specific embodiments

[0025] The following briefly describes the specific embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0026] Figures 1 - 3 The preferred embodiments of the present invention are shown and analyzed in detail.

[0027] As Figure 1 、 3 shown, an underground coal bunker plugging removal device includes a support assembly, a drill pipe assembly, and a cleaning assembly.

[0028] Among them, the support assembly includes an electric hoist 1, a large torque servo reduction integrated machine 2, a rotating suspension box 6, a circular ring slide rail 8, and multiple hydraulic telescopic rods.

[0029] The electric hoist 1 is arranged at the top of the coal bunker. Specifically, a working frame is arranged at the top of the coal bunker, and the electric hoist 1 is suspended at the top position of the coal bunker through the working frame. The electric hoist 1 uses an explosion-proof electric hoist 1. The large torque servo reduction integrated machine 2 is suspended in the coal bunker by the electric hoist 1, and its output end is connected to the rotating suspension box 6. The circular ring slide rail 8 is arranged outside the rotating suspension box 6. Four sliders 23 matching the circular ring slide rail 8 are evenly distributed in the circumferential direction of the rotating suspension box 6 to support the rotating suspension box 6 to move inside the circular ring slide rail 8. The rotating suspension box 6 is connected to the large torque servo reduction integrated machine 2 and makes a semi-circular reciprocating rotation inside the circular ring slide rail 8 under the drive of the large torque servo reduction integrated machine 2. The large torque servo reduction integrated machine 2 and the electric hoist 1 are connected by a high-strength steel wire rope 20 to drive the rotating suspension box 6 to move up and down in the coal bunker.

[0030] The multi-section hydraulic telescopic rods are uniformly distributed along the circumference of the outer circular slide rail 8. One end of each multi-section hydraulic telescopic rod is fixedly connected to the outer side of the circular slide rail 8, and the other end is fixedly connected to the anti-skid pad 4 for contacting and fixing with the inner wall of the coal bunker. The multi-section hydraulic telescopic rods are powered by the first hydraulic pump 7 installed on the circular slide rail 8. Driven by the first hydraulic pump 7, the multi-section hydraulic telescopic rods extend simultaneously and make the anti-skid pad 4 contact with the inner wall of the coal bunker. The rotating suspension box 6 is stabilized under the support of the multi-section hydraulic telescopic rods, thereby improving the stability during the cleaning process. The number of the first hydraulic pumps 7 is consistent with the number of the multi-section hydraulic telescopic rods.

[0031] An image collector 5 is fixed at the lower end of the circular slide rail 8. There are two image collectors 5 evenly distributed along the circumference of the circular slide rail 8, and both use ultra-high-definition infrared cameras to view the internal situation of the coal bunker in real time and transmit the information to the central processor, which controls the working status of the device. The image collector 5 is covered with a protective cover.

[0032] like Figure 2 As shown, the drill rod assembly includes a drill rod 12, a winch 18 and an air pump 16. One end of the drill rod 12 is arranged in the rotating suspension box 6, and the other end extends out of the rotating suspension box 6, and a drill bit 14 is arranged at the end. The winch 18 is fixedly installed on a support platform 17 fixedly arranged in the rotating suspension box 6, and a steel wire rope 20 is arranged at its output end to connect the drill rod 12; the air pump 16 is also installed on the support platform 17, and is connected to the drill rod 12 through a high-pressure explosion-proof air pipe 19. The air pump 16 and the winch 18 are arranged on the upper and lower sides of the support platform 17. The drill bit 14 is provided with a claw-shaped structure 13 hinged to the drill bit 14. The claw-shaped structure 13 is arranged to tilt upward, and a reset spring is connected to the drill bit 14. There are four claw-shaped structures 13 evenly distributed along the circumference of the drill rod 12, and they can be retracted and opened. When encountering resistance, the spring stretches and the claw structure 13 opens. The greater the resistance, the greater the expansion angle. As it is pulled upward, the claw structure 13 opens to the maximum state. After the drill bit 14 leaves the coal accumulation, the claw structure 13 is reset and retracted under the action of the spring. A stopper 21 is also provided inside the rotary suspension box 6 for lateral positioning of the drill rod 12 and preventing the drill rod 12 from shaking. The stopper 21 is annular and fixed to the bottom of the rotary suspension box 6. Its inner diameter is consistent with the outer diameter of the drill rod 12. The drill rod 12 passes through the stopper 21 and extends out of the rotary suspension box 6.

[0033] The cleaning component includes a rotating arm 9, a hydraulic telescopic support rod, a high-pressure nozzle 10, and a high-pressure pump station 15. One end of the rotating arm 9 is hinged to the outer wall of the rotating suspension box 6, and the other end is connected to the high-pressure nozzle 10. The hydraulic telescopic support rod is arranged below the rotating arm 9, with one end hinged to the outer wall of the rotating suspension box 6 and the other end hinged to the rotating arm 9, driving the rotating arm 9 to swing up and down for cleaning. At the same time, the rotating arm 9 makes a semi-circular reciprocating rotation along with the rotating suspension box 6, so that the high-pressure nozzle 10 can clean any inner wall of the coal bunker within the specified range to achieve efficient and accurate cleaning. The high-pressure pump station 15 is arranged outside the coal bunker, connected to the high-pressure nozzle 10 through a high-pressure wear-resistant hose, and the water flow in the high-pressure pump station 15 is conveyed to the high-pressure nozzle 10 through the high-pressure wear-resistant hose and sprayed out to clean the inner wall of the coal bunker. The rotating arm 9 and the corresponding hydraulic telescopic support rods are four groups evenly distributed along the circumferential direction of the rotating suspension box 6. The hydraulic telescopic support rod is powered by a second hydraulic pump 22 installed in the rotating suspension box 6. The high-pressure wear-resistant hose includes a main hose with a diameter of 20 mm and branch hoses with a diameter of 16 mm. The number of branch hoses corresponds to the number of high-pressure nozzles 10. The main hose is connected to each branch hose, the main hose is connected to the high-pressure pump station 15, and the branch hoses are respectively connected to the high-pressure nozzles 10 through the rotating arm 9.

[0034] Working principle: (1) When there is no blockage in the bunker, the clearing device is mainly used to clean the inner wall of the coal bunker. The electric hoist 1 sends the clearing device into the area to be cleaned in the coal bunker through the high-strength steel wire rope 20. The multi-section hydraulic telescopic rod is extended under the action of the first hydraulic pump 7, so that the anti-slip pad 4 fits tightly with the inner wall of the coal bunker. Then, the hydraulic telescopic support rod drives the rotating arm 9 to move to the position to be cleaned under the drive of the second hydraulic pump 22, and the high-pressure pump station 15 is started. The high-pressure pump pressure is adjusted to MPa to start the high-pressure pump, and the high-torque servo reduction integrated machine 2 is started, so that the rotating suspension box 6 makes a slow semi-circular reciprocating rotation on the inner side of the circular slide rail 8, and the inner wall of the coal bunker is cleaned through the high-pressure nozzle 10. The cleaning status of the inner wall of the coal bunker is checked through the image collector 5. After cleaning is completed, the high-torque servo reduction integrated machine 2 is turned off, the multi-section hydraulic telescopic rod is retracted, and the cleaning device is lowered to the next cleaning area through the electric hoist 1 device. Repeat the above steps to clean the next section until the cleaning is completed. (2) When a blockage such as "coal bulging, arching, coal blocking, or coal breaking" occurs, the electric hoist 1 sends the clearing device to the top of the coal pile in the blocked section of the coal bunker through the high-strength steel wire rope 20, starts the winch 18 to drop the drill rod 12 into the coal pile, closes the winch 18, and starts the air pump 16 to set the pressure through the pressure regulating valve, compresses the air, and makes the air pressure reach the set pressure value, and sends the compressed air to the top of the drill rod 12 through the high-pressure explosion-proof pipe. The power of the compressed air is used to push the drill rod 12 downward to impact and move until the arch structure is opened, and then the air pump 16 is closed. The winch 18 is started again, and the drill rod 12 is pulled up through the steel wire rope 20. At this time, the claw structure 13 at the drill bit 14 is opened by the resistance of the coal pile, so that the blocked coal arch is broken, and the clearing process is completed. At this time, the steps in (1) are repeated to clean the residual coal in the coal bunker until the cleaning is completed. The entire cleaning and unblocking process is operated through an external control system. Personnel can clean the coal bunker without entering the bunker, which reduces the labor intensity of workers.

[0035] The above description of the disclosed embodiments enables professionals in the field to implement and use the utility model. Various modifications to these embodiments will be apparent to professionals in the field, and the general principles defined herein may be implemented in other embodiments without departing from the spirit and scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. An underground coal bunker plugging removal device, characterized in that, It includes a support component, a drill pipe component and a cleaning component; The support component includes an electric hoist (1), a high-torque servo reduction integrated machine (2), a rotating suspension box (6), a circular ring slide rail (8) and a telescopic rod (3); the electric hoist (1) is arranged at the top of the coal bunker, the high-torque servo reduction integrated machine (2) is suspended in the coal bunker by the electric hoist (1), its output end is connected to the rotating suspension box (6), the circular ring slide rail (8) is arranged outside the rotating suspension box (6), at least two sliders (23) matching the circular ring slide rail (8) are symmetrically arranged on the rotating suspension box (6), and the rotating suspension box (6) makes a semi-circular reciprocating rotation in the circular ring slide rail (8) under the drive of the high-torque servo reduction integrated machine (2); the telescopic rods (3) are at least two symmetrically arranged on the outer periphery of the circular ring slide rail (8); The drill pipe component includes a drill pipe (12), a winch (18) and an air pump (16); one end of the drill pipe (12) is arranged in the rotating suspension box (6), the other end extends out of the rotating suspension box (6), and a drill bit (14) is arranged at the end, and a claw-shaped structure (13) is arranged on the drill bit (14); the winch (18) is fixedly installed on a support platform (17) fixedly arranged in the rotating suspension box (6), and a steel wire rope (20) is arranged at its output end to connect the drill pipe (12); the air pump (16) is also installed on the support platform (17) and is connected to the drill pipe (12) through a high-pressure explosion-proof air pipe (19); The cleaning component includes a rotating arm (9), a telescopic support rod (11), a high-pressure nozzle (10) and a high-pressure pump station (15); one end of the rotating arm (9) is hinged to the outer wall of the rotating suspension box (6), and the other end is connected to the high-pressure nozzle (10); the telescopic support rod (11) is arranged below the rotating arm (9), one end is hinged to the outer wall of the rotating suspension box (6), and the other end is hinged to the rotating arm (9) to drive the rotating arm (9) to swing up and down for cleaning; the high-pressure pump station (15) is connected to the high-pressure nozzle (10) through a high-pressure wear-resistant hose, and the water flow in the high-pressure pump station (15) is conveyed to the high-pressure nozzle (10) through the high-pressure wear-resistant hose and sprayed out.

2. The underground coal bunker plugging removal device according to claim 1, characterized in that, The telescopic rod (3) is a multi-stage hydraulic telescopic rod, and the multi-stage hydraulic telescopic rod is powered by a first hydraulic pump (7) installed on the circular ring slide rail (8); the multi-stage hydraulic telescopic rods are multiple and are evenly distributed along the circumferential direction of the outer circular ring slide rail (8), and an anti-slip pad (4) is fixedly connected to one end of each multi-stage hydraulic telescopic rod away from the circular ring slide rail (8).

3. The underground coal bunker plugging removal device according to claim 1, characterized in that, The sliders (23) are multiple and are evenly distributed along the circumferential direction of the rotating suspension box (6).

4. The underground coal bunker plugging removal device according to claim 1, characterized in that, An image collector (5) is fixed at the lower end of the circular ring slide rail (8), the image collectors (5) are multiple and are evenly distributed along the circumferential direction of the circular ring slide rail (8), and a protective cover is sleeved outside the image collector (5).

5. The underground coal bunker plug cleaning device according to claim 1, characterized in that, A limiter (21) is also arranged inside the rotating suspension box (6), the limiter (21) is circular and is fixed at the bottom of the rotating suspension box (6), and the drill pipe (12) passes through the limiter (21) and extends out of the rotating suspension box (6).

6. The underground coal bunker plugging removal device according to claim 1, characterized in that, The claw-shaped structure (13) is hinged to the drill bit (14), is arranged obliquely upward, and a return spring is connected between the claw-shaped structure (13) and the drill bit (14). A plurality of the claw-shaped structures (13) are circumferentially and uniformly distributed along the drill pipe (12).

7. The underground coal bunker plugging removal device according to claim 1, characterized in that, A plurality of the rotating arms (9) and the corresponding telescopic support rods (11) corresponding thereto are circumferentially and uniformly distributed along the rotating suspension box (6); the telescopic support rods (11) are hydraulic telescopic support rods, and power is provided by a second hydraulic pump (22) installed in the rotating suspension box (6); the high-pressure wear-resistant hose includes a main hose and branch hoses. The number of the branch hoses corresponds to the number of the high-pressure nozzles (10). The main hose is communicated with each branch hose. The main hose is connected to the high-pressure pump station (15), and the branch hoses are respectively connected to the high-pressure nozzles (10) through the rotating arms (9).

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