Coal bunker dredging device and dredging method

Abstract

The invention provides a coal bunker dredging device and method. The coal bunker dredging device comprises a bottom frame, a conveying mechanism connected to the bottom frame and an air bag arranged at the movable end of the conveying mechanism. A blasting object is fixed above the air bag, and the conveying mechanism is used for driving the air bag to move in the height direction, the width direction and the extending direction of the roadway so that the air bag can be conveyed to the position below the bin door. The conveying mechanism comprises a first lifting mechanism arranged below the air bag, the first lifting mechanism conveys the air bag into the coal bunker, an air bag inlet is provided with an air inflation pipe connected with an external air pump, and after the air bag is inflated, blasting objects are lifted to the blocking position in the coal bunker. According to the coal bunker dredging device, a worker can detonate a blasting object in a safe position, the effect of dredging a coal bunker is achieved, and the operation safety of the worker is guaranteed. The first lifting mechanism is arranged outside the bin door, detonation dredging can be conveniently conducted after the bin door is closed, and the coal piling phenomenon of a roadway caused by large-area coal discharging due to the fact that the bin door is opened after dredging can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine equipment, and in particular to a coal bunker dredging device. The present invention also relates to a dredging method for the coal bunker dredging device. Background Art

[0002] Coal production requires buffer storage in coal bunkers. When the coal outlet of the coal bunker is blocked, "hanging on the wall" and "blowing the bunker" phenomena will appear in the coal bunker, seriously affecting the utilization efficiency of the raw coal silo and even causing shutdowns.

[0003] The main reason for coal bunker blockage is that the coal is damp, coal dust accumulates in the bunker, foreign matter in the coal transport, etc., which causes the coal discharge in the bunker to become stuck or completely stagnant. Especially when the moisture in the bunker reaches a certain level, the fluidity of the raw coal in the bunker decreases. When using traditional manual nearby operations to clean the blockage or wall bunker, the coal chute gate is difficult to control, which can easily cause bunker collapse accidents and endanger the lives of personnel.

[0004] In the prior art, mechanical vibration or air cannon technology is used to clear the blockage, but this method requires the layout of mechanical equipment or pipelines in the early stage of coal mine construction. For the built coal bunker, due to its large size, about 10 meters in diameter and 40-50 meters in height, emptying the coal bunker will cause the funnel mouth and gate to be damaged by impact during coal unloading, affecting the safety of the workers, and causing air leakage and coal dust flying. Therefore, it is impossible to add the above equipment and can only rely on manual cleaning.

[0005] Secondly, there is also a method in the prior art of using a mechanical arm to penetrate the blocked part from the top of the coal bunker and then impact to eliminate the blockage. However, this method is not suitable for underground coal bunkers. Since the space between the underground coal bunker and the tunnel is not enough to set up a mechanical arm, it cannot meet the movement of the mechanical arm. Therefore, this method is only suitable for use in external open-air coal bunkers.

[0006] Therefore, in the prior art, for a coal bunker that has been built in an underground tunnel, once the coal bunker is blocked, it can only be operated manually, and the insecurity caused by bunker collapse during manual operation cannot be resolved. Summary of the invention

[0007] In view of this, the present invention aims to propose a coal bunker dredging device, which can automatically dredge the blocked parts of the coal bunker, improve the safety of workers, and avoid safety accidents caused by manual operations.

[0008] To achieve the above object, the technical solution of the present invention is achieved as follows: A coal bunker dredging device comprises a base frame, a transmission mechanism connected to the base frame, and an air bag arranged at a movable end of the transmission mechanism; An explosive is fixed above the airbag, and the transmission mechanism is used to drive the airbag to move along the height direction, width direction and extension direction of the tunnel, so that the airbag is transmitted to the bottom of the warehouse door; The transmission mechanism includes a first lifting mechanism arranged below the airbag, the first lifting mechanism transports the airbag to the inside of the coal bin, the airbag inlet is provided with an inflation pipe connected to an external air pump, and the airbag lifts the explosive to the blocking place in the coal bin after inflation.

[0009] Further, the transmission mechanism includes a second lifting mechanism disposed on the base frame, a swing component disposed at a movable end of the second lifting mechanism, and a telescopic component connected to the swing mechanism; The first lifting mechanism is arranged at the movable end of the telescopic assembly.

[0010] Further, the first lifting mechanism includes a first driving part and a first scissor-type connecting rod assembly, the first driving part drives the movable end of the first scissor-type connecting rod assembly to reciprocate along the height direction of the lane, and the airbag is connected to the movable end of the first scissor-type connecting rod assembly; The second lifting mechanism includes a second driving part and a second scissor-type connecting rod assembly, wherein the second driving part drives the movable end of the second scissor-type connecting rod assembly to reciprocate along the height direction of the laneway, and the swing assembly is connected to the movable end of the first scissor-type connecting rod assembly; A first top plate is provided at the movable end of the first lifting mechanism, and the first top plate is used to install the fixed end of the airbag. The airbag is arranged on the first top plate in a compressed state, and a vent is provided on the first top plate. A second top plate is provided at the movable end of the second lifting mechanism.

[0011] Further, the swing assembly includes a third driving part connected to the second top plate, and a swing arm connected to the third driving part; A rotating part is provided between the swing arm and the telescopic assembly, and the rotating part is used to drive the telescopic assembly to rotate along a horizontal plane and a vertical plane parallel to the tunnel.

[0012] Further, the rotating part includes a first rotating driving part connected to the swing arm, a connecting piece connected to the power output end of the first rotating driving part, and a second rotating driving part provided on the connecting piece; The rotation plane of the first rotary drive unit is parallel to the vertical plane of the lane, and the rotation plane of the second rotary drive unit is parallel to the horizontal plane of the lane; The power output end of the second rotation driving unit is connected to the telescopic assembly.

[0013] Further, the telescopic assembly includes a fourth driving part, and a telescopic arm connected to the power output end of the fourth driving part, and a mounting plate for mounting the first lifting mechanism is provided on the movable end of the telescopic arm; The fixed end of the first lifting mechanism is connected to the mounting plate, and the first driving part is connected to the telescopic arm.

[0014] Furthermore, the chassis is provided with a walking system, a power system, and an intelligent control system; The fixed end of the second lifting mechanism is mounted on the base frame, and the power system is used to provide energy and power; The intelligent control system is connected to a plurality of information collecting components by electrical signals, and the intelligent control system controls the movement of the transmission mechanism and the first lifting mechanism according to the collected signals, so that the airbag is sent into the coal bin.

[0015] Furthermore, a fifth driving unit and a column connected to the power output end of the fifth driving unit are provided on one side of the base frame, and the two columns are driven to move along the height direction of the tunnel so that the columns abut against the ground and top surface of the tunnel.

[0016] Furthermore, the information collection component includes two searchlights respectively arranged at the two ends of the telescopic arm, a camera arranged at the lower part of the airbag, and a laser gas telemeter arranged at the movable end of the telescopic arm; The camera is used to observe the blockage situation in the coal bunker and transmit the collected data to the intelligent control system; The laser gas telemeter is used to measure the gas content in the coal bunker.

[0017] Compared with the prior art, the present invention has the following advantages: The coal bunker dredging device described in the present invention transports the airbag arranged at its own active end to the bottom of the coal bunker by providing a transmission mechanism, and is driven by the transmission device to fine-tune the position of the airbag relative to the coal bunker blockage. When the airbag is inflated, the airbag pushes the explosive to the blockage. At this time, the bunker door is closed, and the staff can detonate the explosive in a safe position, thereby achieving the purpose of dredging the coal bunker and ensuring the safety of the staff's operation.

[0018] In addition, by setting up a first lifting mechanism, the airbag can be pushed into the coal bunker. The first lifting mechanism is set outside the bunker door, which is convenient for detonation and evacuation after the bunker door is closed, and can avoid coal accumulation in the tunnel caused by large-scale coal leakage due to the opening of the bunker door after evacuation.

[0019] In addition, by setting up a second lifting mechanism, the telescopic component can drive the airbag to adjust along the height direction of the tunnel. By setting up a swing component, the displacement of the airbag in the width direction of the tunnel can be adjusted. By setting up a telescopic component, the airbag can pass through the narrow distance between the coal conveyor belt and the coal bin door and transport the airbag to the bottom of the bin door. The transmission mechanism set up in this way is more flexible to adjust.

[0020] A rotating part is also provided to allow the telescopic assembly to rotate along the horizontal and vertical planes of the tunnel, thereby adapting to the adjustment of different angles between the warehouse door and the tunnel floor, further ensuring the flexibility and accuracy of the airbag transportation, and being suitable for use in tunnels of various specifications.

[0021] Another object of the present invention is to provide a coal bunker dredging method, which adopts the coal bunker dredging device as described above, and the specific steps are as follows: Step 1: When the coal bunker is blocked, the coal bunker dredging device is transported to the track closest to the bunker door by a flatbed mine car; Step 2, starting the power system, adjusting the position of the coal bunker dredging device relative to the bunker door, so that the coal bunker dredging device is close to the bunker door; Step 3, starting the second driving unit to drive the telescopic assembly to rise to a suitable height through the second lifting mechanism; Step 4, driving the telescopic arm to rotate by the rotating part so that the telescopic arm forms a preset angle with the top of the tunnel; Step 5, opening the bunker door and starting the first lifting mechanism, so that the first lifting mechanism pushes the airbag and the explosive into the coal bunker; Step 6, adjusting the position of the airbag to be close to the bottom of the plugging position of the coal bunker, inflating the airbag, and the airbag lifting the explosive to the plugging position of the coal bunker; Step seven, close the bunker door, and the staff retreat to a safe distance to pack the explosives and complete the coal bunker dredging.

[0022] The coal bunker dredging method of the present invention adopts the coal bunker dredging device as described above to adapt to the location of the coal bunker in different tunnels, quickly transports the airbag to the bottom of the coal bunker door, and places the explosive material on the top of the coal bunker blockage by inflating the airbag, so as to perform blasting when the bunker door is closed. This method not only avoids the safety accidents caused by manual dredging in the prior art, but also improves the dredging efficiency, and is more suitable for coal bunker blocking applications in tunnels. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of the coal bunker dredging device according to an embodiment of the present invention from a first viewing angle; Figure 2 It is a schematic diagram of the three-dimensional structure of the coal bunker dredging device according to an embodiment of the present invention from a second viewing angle; Figure 3 It is a schematic diagram of the three-dimensional structure of the coal bunker dredging device according to an embodiment of the present invention from a third viewing angle; Figure 4 for Figure 3 A partial enlarged view of point I in the middle; Figure 5 It is a front view schematic diagram of the coal bunker dredging device according to an embodiment of the present invention; Figure 6 It is a top view schematic diagram of the coal bunker dredging device according to an embodiment of the present invention; Figure 7 It is a left side schematic diagram of the coal bunker dredging device according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the application of the coal bunker dredging device described in an embodiment of the present invention deployed in a tunnel.

[0024] Description of reference numerals: 1. Chassis; 2. Transmission mechanism; 3. Airbag; 4. Travel system; 5. Power system; 6. Intelligent control system; 7. Column; 8. Searchlight; 9. Camera; 10. Laser gas telemeter; 201, first lifting mechanism; 202, second lifting mechanism; 203, swing assembly; 204, telescopic assembly; 205, rotating part; 2011, first driving part; 2012, first scissor-type connecting rod assembly; 2013, first top plate; 2014, vent; 2021. second driving unit; 2022. second scissor-type connecting rod assembly; 2023. second top plate; 2031, a third driving unit; 2032, a swing arm; 2041, telescopic arm; 2042, mounting plate; 2051, first rotation driving unit; 2052, connecting piece; 2053, second rotation driving unit. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0026] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connected", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0029] The present embodiment relates to a coal bunker dredging device, which includes a base frame 1, a transmission mechanism 2 connected to the base frame 1, and an airbag 3 provided at the movable end of the transmission mechanism 2. Explosives are fixed above the airbag 3, and the transmission mechanism 2 is used to drive the airbag 3 to move along the height direction, width direction and extension direction of the tunnel so that the airbag 3 is transmitted to the bottom of the bunker door. The transmission mechanism 2 includes a first lifting mechanism 201 provided below the airbag 3, and the first lifting mechanism 201 transports the airbag 3 to the inside of the coal bunker. An inflation pipe connected to an external air pump is provided at the inlet of the airbag 3, and the airbag 3 lifts the explosives to the blockage in the coal bunker after inflation.

[0030] The coal bunker dredging device of this embodiment transports the airbag 3 provided at its own active end to the bottom of the coal bunker by setting up a transmission mechanism 2, and drives the transmission device to fine-tune the position of the airbag 3 relative to the coal bunker blockage. When the airbag 3 is inflated, the airbag 3 pushes the explosive to the blockage. At this time, the bunker door is closed, and the staff can detonate the explosive in a safe position, thereby achieving the purpose of dredging the coal bunker and ensuring the safety of the staff's operation.

[0031] In addition, by setting up the first lifting mechanism 201, the airbag 3 can be pushed into the coal bunker. The first lifting mechanism 201 is set outside the bunker door, which is convenient for detonation and dredging after the bunker door is closed, and can avoid the phenomenon of coal piling in the tunnel caused by large-scale coal leakage caused by the bunker door being opened after dredging.

[0032] Based on the above overall introduction, an exemplary structure of the coal bunker dredging device of this embodiment is as follows: Figures 1 to 3As shown, the base frame 1 is a rectangular planar plate structure, and the transmission mechanism 2 is arranged above the base frame 1.

[0033] Preferably, still as Figures 1 to 3 As shown, the transmission mechanism 2 includes a second lifting mechanism 202 disposed on the base frame 1, a swing assembly 203 disposed at the movable end of the second lifting mechanism 202, and a telescopic assembly 204 connected to the swing mechanism. The first lifting mechanism 201 is disposed at the movable end of the telescopic assembly 204.

[0034] In this embodiment, combined with Figures 1 to 8 As shown, by setting the second lifting mechanism 202, the telescopic component 204 can drive the airbag 3 to adjust along the height direction of the tunnel. By setting the swing component 203, the displacement of the airbag 3 in the width direction of the tunnel can be adjusted. By setting the telescopic component 204, the airbag 3 can be transported to the bottom of the coal bin door through the narrow distance between the coal conveyor belt and the coal bin door. The transmission mechanism 2 set in this way can be adjusted more flexibly.

[0035] Specifically, Figures 1 to 3 As shown, the second lifting mechanism 202 includes a second driving part 2021 and a second scissor-type connecting rod assembly 2022. The second driving part 2021 drives the movable end of the second scissor-type connecting rod assembly 2022 to reciprocate along the height direction of the roadway, and the swing assembly 203 is connected to the movable end of the first scissor-type connecting rod assembly 2012. The second driving part 2021 adopts a telescopic oil cylinder, and the second scissor-type connecting rod mechanism is composed of a plurality of connecting rods connected in a cross-pivot connection, wherein one of the connecting rods at the bottom end is connected to the base frame 1 through a hinge seat, and another connecting rod crossing the connecting rod is connected to the power output end of the second driving part 2021.

[0036] And, if Figures 1 to 3 As shown, a second top plate 2023 is provided at the movable end of the second lifting mechanism 202, that is, a second top plate 2023 is provided at the top of multiple connecting rods. When the second driving part 2021 drives another connecting rod to move, the second top plate 2023 drives the telescopic assembly 204 to move upward.

[0037] In addition, if Figures 1 to 7 As shown, the first lifting mechanism 201 includes a first driving part 2011 and a first scissor-type connecting rod assembly 2012. The first driving part 2011 drives the movable end of the first scissor-type connecting rod assembly 2012 to reciprocate along the height direction of the roadway, and the airbag 3 is connected to the movable end of the first scissor-type connecting rod assembly 2012. A first top plate 2013 is provided at the movable end of the first lifting mechanism 201, and the first top plate 2013 is used to install the fixed end of the airbag 3. The airbag 3 is arranged on the first top plate 2013 in a compressed state, and a vent 2014 is provided on the first top plate 2013.

[0038] The first driving part 2011 of this embodiment adopts a telescopic oil cylinder, and the structures of the first scissor-type connecting rod assembly 2012 and the second scissor-type connecting rod assembly 2022 are the same, which will not be repeated here. The first top plate 2013 is arranged at the top of the first scissor-type connecting rod assembly 2012, and the airbag 3 is fixed to the first top plate 2013 by binding and bolts. The vent 2014 is located at the center of the first top plate 2013, and the air inlet of the airbag 3 is connected to the vent 2014. The vent 2014 is for the above-mentioned inflation tube to pass through, so as to facilitate the inflation of the airbag 3.

[0039] In addition, if Figures 1 to 7 As shown, the swing assembly 203 includes a third driving part 2031 connected to the second top plate 2023, and a swing arm 2032 connected to the third driving part 2031. A rotating part 205 is provided between the swing arm 2032 and the telescopic assembly 204, and the rotating part 205 is used to drive the telescopic assembly 204 to rotate along the horizontal plane and the vertical plane parallel to the lane. The third driving part 2031 adopts a rotating oil cylinder, and the swing arm 2032 is connected to the piston rod of the rotating oil cylinder. The displacement of the airbag 3 in the width direction of the lane is adjusted by the third driving part 2031.

[0040] Furthermore, if Figures 1 to 7 As shown, the rotating part 205 includes a first rotating driving part 2051 connected to the swing arm 2032 , a connecting piece 2052 connected to the power output end of the first rotating driving part 2051 , and a second rotating driving part 2053 provided on the connecting piece 2052 .

[0041] Among them, Figures 1 to 3 As shown, the rotation plane of the first rotary drive unit 2051 is parallel to the vertical plane of the lane, and the rotation plane of the second rotary drive unit 2053 is parallel to the horizontal plane of the lane. The power output end of the second rotary drive unit 2053 is connected to the telescopic component 204. In this embodiment, the first rotary drive unit 2051 and the second rotary drive unit 2053 both use rotary cylinders. The vertical plane described in this embodiment is parallel to the layout plane of the second lifting mechanism 202, that is, parallel to the plane of the side of the lane. Such a setting can facilitate the adjustment of the angle between the telescopic component 204 and the lane ground, thereby adapting to the adjustment of different angles between the warehouse door and the lane ground, further ensuring the flexibility and accuracy of the airbag 3 transportation, and being suitable for use in lanes of multiple specifications.

[0042] As a preferred implementation mode, Figures 1 to 7 As shown, the telescopic assembly 204 includes a fourth driving part, and a telescopic arm 2041 connected to the power output end of the fourth driving part, and a mounting plate 2042 for mounting the first lifting mechanism 201 is provided on the movable end of the telescopic arm 2041. The fixed end of the first lifting mechanism 201 is connected to the mounting plate 2042, and the first driving part 2011 is connected to the telescopic arm 2041.

[0043] The fourth driving unit adopts a telescopic oil cylinder, which is arranged in the inner cavity of the multi-section telescopic arm 2041 (not shown in the figure). The telescopic arm 2041 is formed by inserting multiple sections of rectangular square tubes. The power output end of the fourth driving unit is connected to the square tube with the smallest area. When the fourth driving unit is extended, the telescopic arm 2041 extends to the longest state.

[0044] In addition, in order to achieve better practical effects, such as Figures 1 to 7 As shown, the chassis 1 is provided with a walking system 4, a power system 5, and an intelligent control system 6. The fixed end of the second lifting mechanism 202 is mounted on the chassis 1, and the power system 5 is used to provide energy and power. The intelligent control system 6 is connected to multiple information collection components by electrical signals, and the intelligent control system 6 controls the movement of the transmission mechanism 2 and the first lifting mechanism 201 according to the collected signals, so that the airbag 3 is sent into the coal bunker.

[0045] like Figures 1 to 7 As shown, the walking system 4 of this embodiment is the same as the crawler vehicle chassis system in the prior art, and will not be described in detail here. The power system 5 includes a hydraulic pump that provides power to the above-mentioned driving cylinders, a hydraulic valve for controlling and adjusting the pressure, flow and direction of the liquid, and an oil tank arranged on the chassis 1.

[0046] The intelligent control system 6 also includes a control system such as a PLC controller, which is used to receive signals from the information acquisition component and control the movement of the hydraulic valve and each driving cylinder.

[0047] In order to increase the operating stability of the coal bunker dredging device, Figures 1 to 7 As shown, a fifth driving unit and a column 7 connected to the power output end of the fifth driving unit are provided on one side of the chassis 1, and the two columns 7 are driven to move along the height direction of the tunnel so that the columns 7 abut against the ground and the top surface of the tunnel. The fifth driving unit adopts a telescopic cylinder, which is provided in the inner cavity of the column 7 and is not shown in the figure.

[0048] Furthermore, the information collection component includes two searchlights 8 respectively arranged at the two ends of the telescopic arm 2041, a camera 9 arranged at the lower part of the airbag 3, and a laser gas telemeter 10 arranged at the movable end of the telescopic arm 2041. The camera 9 is used to observe the blockage situation in the coal bunker and transmit the collected data to the intelligent control system 6. The laser gas telemeter 10 is used to measure the gas content in the coal bunker.

[0049] The coal bunker dredging device described in this embodiment has a simple structure, occupies a small area, and is flexible and reliable in movement. The coal bunker blockage is dredged by detonating explosives in a safe position, which not only ensures the work safety of the workers, but also avoids the disadvantage of large-scale leakage of coal.

[0050] This embodiment also relates to a coal bunker dredging method, which uses the coal bunker dredging device as described above, and the specific steps are as follows: Step 1: When the coal bunker is blocked, use a flatbed mine car to transport the coal bunker dredging device to the track closest to the bunker door; Step 2: start the power system 5 and adjust the position of the coal bunker dredging device relative to the bunker door so that the coal bunker dredging device is close to the bunker door; Next, the fifth driving part is started to raise the column 7 to support the top surface and the ground of the tunnel, so that the coal bunker dredging device is more stably arranged in the tunnel; Step 3: Bundle and fix the explosives above the airbag 3, start the second driving unit 2021, and drive the telescopic assembly 204 to rise to a suitable height through the second lifting mechanism 202; Step 4: The rotating part 205 drives the telescopic arm 2041 to rotate so that the telescopic arm 2041 forms a preset angle with the top of the tunnel; Step 5: Open the bunker door and start the first lifting mechanism 201, which pushes the airbag 3 and the explosive into the coal bunker; The searchlight 8 is turned on, and the blocking situation in the coal bunker is observed through the camera 9, and the blocking data is transmitted to the intelligent control system 6. The gas content in the coal bunker is measured through the laser gas telemeter 10. When the gas content exceeds the standard, the vent 214 on the first roof 2013 will blow air into the coal bunker to dilute the gas content until the gas content drops to normal; Step six, adjust the position of the airbag 3 so that it is close to and just below the plugging point of the coal bunker, inflate the airbag 3, and the airbag 3 lifts the explosive to the plugging point of the coal bunker.

[0051] Step 7: Close the bunker door, and the staff retreat to a safe distance to pack the explosives and complete the coal bunker dredging. The explosives are explosives such as electronic detonators, and the staff can detonate the detonators by electronic control.

[0052] The coal bunker dredging method of this embodiment adopts the coal bunker dredging device as described above to adapt to the location of the coal bunker in different lanes, quickly transport the airbag 3 to the bottom of the coal bunker door, and place the explosive material on the top of the coal bunker blockage by inflating the airbag 3, so as to perform blasting when the bunker door is closed. This method not only avoids the safety accidents caused by manual dredging in the prior art, but also improves the dredging efficiency, and is more suitable for coal bunker blocking applications in lanes.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal bunker dredging device, characterized in that: It comprises a base frame (1), a transmission mechanism (2) connected to the base frame (1), and an air bag (3) arranged at a movable end of the transmission mechanism (2); An explosive is fixed above the airbag (3), and the transmission mechanism (2) is used to drive the airbag (3) to move along the height direction, width direction and extension direction of the tunnel, so that the airbag (3) is transmitted to the bottom of the warehouse door; The transmission mechanism (2) comprises a first lifting mechanism (201) disposed below the airbag (3), the first lifting mechanism (201) transporting the airbag (3) to the interior of the coal bunker, an inlet of the airbag (3) being provided with an inflation pipe connected to an external air pump, and the airbag (3) lifting the explosive to a blocking location in the coal bunker after being inflated.

2. The coal bunker dredging device according to claim 1 is characterized in that: The transmission mechanism (2) comprises a second lifting mechanism (202) arranged on the base frame (1), a swing component (203) arranged at the movable end of the second lifting mechanism (202), and a telescopic component (204) connected to the swing mechanism; The first lifting mechanism (201) is arranged at the movable end of the telescopic component (204).

3. The coal bunker dredging device according to claim 2 is characterized in that: The first lifting mechanism (201) comprises a first driving unit (2011) and a first scissor-type connecting rod assembly (2012), wherein the first driving unit (2011) drives the movable end of the first scissor-type connecting rod assembly (2012) to reciprocate along the height direction of the tunnel, and the airbag (3) is connected to the movable end of the first scissor-type connecting rod assembly (2012); The second lifting mechanism (202) comprises a second driving part (2021) and a second scissor-type connecting rod assembly (2022), wherein the second driving part (2021) drives the movable end of the second scissor-type connecting rod assembly (2022) to reciprocate along the height direction of the tunnel, and the swing assembly (203) is connected to the movable end of the first scissor-type connecting rod assembly (2012); The movable end of the first lifting mechanism (201) is provided with a first top plate (2013), the first top plate (2013) is used to mount the fixed end of the airbag (3), the airbag (3) is arranged on the first top plate (2013) in a compressed state, the first top plate (2013) is provided with a vent (2014), and the movable end of the second lifting mechanism (202) is provided with a second top plate (2023).

4. The coal bunker dredging device according to claim 3 is characterized in that: The swing assembly (203) comprises a third driving part (2031) connected to the second top plate (2023), and a swing arm (2032) connected to the third driving part (2031); A rotating part (205) is provided between the swing arm (2032) and the telescopic assembly (204), and the rotating part (205) is used to drive the telescopic assembly (204) to rotate along a horizontal plane and a vertical plane parallel to the tunnel.

5. The coal bunker dredging device according to claim 4 is characterized in that: The rotating part (205) comprises a first rotating driving part (2051) connected to the swing arm (2032), a connecting piece (2052) connected to a power output end of the first rotating driving part (2051), and a second rotating driving part (2053) provided on the connecting piece (2052); The rotation plane of the first rotation driving unit (2051) is parallel to the vertical plane of the lane, and the rotation plane of the second rotation driving unit (2053) is parallel to the horizontal plane of the lane; The power output end of the second rotation driving unit (2053) is connected to the telescopic assembly (204).

6. The coal bunker dredging device according to claim 5, characterized in that: The telescopic assembly (204) comprises a fourth driving part, and a telescopic arm (2041) connected to a power output end of the fourth driving part, and a mounting plate (2042) for mounting the first lifting mechanism (201) is provided on a movable end of the telescopic arm (2041); The fixed end of the first lifting mechanism (201) is connected to the mounting plate (2042), and the first driving part (2011) is connected to the telescopic arm (2041).

7. The coal bunker dredging device according to claim 6, characterized in that: The chassis (1) is provided with a walking system (4), a power system (5), and an intelligent control system (6); The fixed end of the second lifting mechanism (202) is mounted on the base frame (1), and the power system (5) is used to provide energy and power; The intelligent control system (6) is connected to a plurality of information collection components by electrical signals, and the intelligent control system (6) controls the movement of the transmission mechanism (2) and the first lifting mechanism (201) according to the collected signals, so as to deliver the airbag (3) into the coal bin.

8. The coal bunker dredging device according to claim 7, characterized in that: A fifth driving unit and a column (7) connected to a power output end of the fifth driving unit are provided on one side of the base frame (1), and the two columns (7) are driven to move along the height direction of the tunnel so that the columns (7) abut against the ground and the top surface of the tunnel.

9. The coal bunker dredging device according to claim 8, characterized in that: The information collection component comprises two searchlights (8) respectively arranged at the two ends of the telescopic arm (2041), a camera (9) arranged at the lower part of the airbag (3), and a laser gas telemeter (10) arranged at the movable end of the telescopic arm (2041); The camera (9) is used to observe the blockage situation in the coal bunker and transmit the collected data to the intelligent control system (6); The laser gas telemeter (10) is used to measure the gas content in the coal bunker.

10. A method for dredging a coal bunker, characterized in that: The coal bunker dredging device according to any one of claims 2 to 9 is used, and the specific steps are as follows: Step 1: When the coal bunker is blocked, the coal bunker dredging device is transported to the track closest to the bunker door by a flatbed mine car; Step 2: starting the power system (5) and adjusting the position of the coal bunker dredging device relative to the bunker door so that the coal bunker dredging device is close to the bunker door; Step three, starting the second driving unit (2021) to drive the telescopic assembly (204) to rise to a suitable height via the second lifting mechanism (202); Step 4: driving the telescopic arm (2041) to rotate by means of the rotating part (205), so that the telescopic arm (2041) forms a preset angle with the top of the tunnel; Step 5, opening the bunker door and starting the first lifting mechanism (201), wherein the first lifting mechanism (201) pushes the airbag (3) and the explosive into the coal bunker; Step six, adjusting the position of the airbag (3) so that it is close to the bottom of the plugging position of the coal bunker, inflating the airbag (3), and the airbag (3) lifts the explosive to the plugging position of the coal bunker; Step seven, close the bunker door, and the staff retreat to a safe distance to pack the explosives and complete the coal bunker dredging.

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