Coal mine air way floor heave cleaning device and cleaning method

Abstract

The invention provides a coal mine air way floor heave cleaning device and method. The coal mine air way floor heave cleaning device comprises a crawler-type excavator assembly, a conveying mechanism and a supporting mechanism. The crawler-type digging machine assembly is arranged beside a working face of an air way roadway and used for crushing and collecting floor heaves of the air way and transferring collected gangue coal cinder materials to the conveying mechanism; the conveying mechanism is connected to the rear end of the crawler-type digging machine assembly and used for conveying gangue coal cinder materials to a goaf. The supporting mechanisms are arranged on the periphery of the crawler-type excavator assembly and the periphery of the conveying mechanism correspondingly and used for supporting the air way roadway. When the coal mine air way floor heave cleaning device is used for cleaning a floor heave, crushing, slag cleaning, loading and transporting, transshipping and continuous conveying and discharging can be carried out at the same time, and the propelling efficiency of a fully mechanized coal mining face of a coal mine is improved.

Description

Technical Field

[0001] The invention relates to the field of coal mine cleaning equipment, and in particular to a coal mine airway bottom drum cleaning device and a cleaning method. Background Art

[0002] The tunnel is a passage for transportation, ventilation, drainage, etc. during underground mining. The fully mechanized coal mining face generally adopts the backward mining method. A conveying tunnel for coal transportation and a wind tunnel for return air are arranged at both ends of the working face. The wind tunnel corresponds to the tail of the fully mechanized coal mining face. With the increase of coal mining depth, the surrounding rocks on both sides of some coal mine tunnels will gather back under the influence of geological stress, and the roof and floor of the tunnel will sink and drum. The drum is mainly composed of rock layer, gangue or part of coal block, which has a certain hardness. The arch of the drum can reach 1 to 2 meters, resulting in the reduction of the original tunnel section by half, which will not only affect the normal advancement of the working face, but also affect the support and ventilation section of the advanced area of ​​the wind tunnel, which will bring great inconvenience and safety hazards to the workers' passage and operation. At present, the cleaning of the drum of the wind tunnel of most fully mechanized coal mining faces is mainly done by a large number of people using pneumatic picks to break the bottom, and using conveyor vehicles to transport gangue and coal slag, which has high labor intensity and low cleaning efficiency.

[0003] The utility model patent with the authorization announcement number CN215234855U discloses a coal mine bottom drum removal device, including a removal and crushing device, a limiting side rail and a bottom slide rail. The left and right sides of the removal and crushing device are connected to the side wall of the mine through the limiting side rail, and the left and right sides of the bottom of the removal and crushing device are connected to the bottom of the mine through the bottom slide rail. The removal and crushing device includes a bracket, a lower movable mounting plate, a spring, a drilling device and a handle. A handle is installed on the top of the bracket, and the bottom is slidably connected to the bottom slide rail. The two ends of the lower movable mounting plate are slidably mounted on the bracket. The top of the lower movable mounting plate is connected to the crossbeam of the bracket through a spring, and there is a drilling device on the lower movable mounting plate. The coal mine bottom drum removal device can effectively remove the raised bottom drum of the coal mine, liberate labor and improve work efficiency, but the device has a relatively single function and does not have the functions of crushing, slag removal, shipping, reloading and continuous conveying and discharging. Summary of the invention

[0004] In order to simultaneously perform crushing, slag removal, loading, reloading and continuous conveying and discharging when removing the bottom drum, and improve the propulsion efficiency of the fully mechanized mining working face of the coal mine, the technical scheme adopted by the present invention is: a coal mine airway bottom drum cleaning device, including a crawler type cleaning machine assembly, a conveying mechanism and a supporting mechanism; The crawler-type cleaning machine assembly is arranged beside the working surface of the wind tunnel, and is used to crush and collect the wind tunnel bottom drum and transfer the collected gangue and coal slag materials to the conveying mechanism; The conveying mechanism is connected to the rear end of the crawler-type cleaning machine assembly and is used to convey the gangue and coal slag materials to the goaf; The supporting mechanisms are respectively arranged around the crawler-type cleaning machine assembly and the conveying mechanism, and are used for supporting the wind tunnel.

[0005] Based on the above, the crawler type excavator assembly mainly includes crawlers, a frame, a power unit, a mechanical arm, a tunneling machine blade, a breaker hammer and a bucket; The breaker hammer and the bucket are respectively arranged on the mechanical arm, and the mechanical arm and the tunnel boring machine shovel are respectively arranged at the front end of the frame.

[0006] Based on the above, the conveying mechanism includes a first conveyor, a crawler transfer machine and a second conveyor arranged in sequence along the wind tunnel. The first conveyor is connected to the rear end of the crawler excavator assembly and is used to receive the gangue and coal slag materials transported from the tunneling machine shovel. The crawler transfer machine is connected to the rear end of the first conveyor, and the second conveyor is connected to the rear end of the crawler transfer machine.

[0007] Based on the above, a supporting wheel is provided at the rear of the second conveyor.

[0008] Based on the above, the conveying mechanism also includes a scraper located at one end of the air lane.

[0009] Based on the above, the support mechanism includes an inner advance support group, a first anchor support group, an outer advance support group, a push jack, a rear advance support group and an end hydraulic support; The end hydraulic support is arranged at one end of the wind lane, and the scraper is arranged on one side of the end hydraulic support; The first anchor bracket group, the outer leading bracket group, and the rear leading bracket group are sequentially arranged along the air lane, and the outer leading bracket group and the first anchor bracket group, as well as the outer leading bracket group and the rear leading bracket group are respectively connected by push jacks; The inner leading bracket group is connected to both sides of the first conveyor and moves with the first conveyor.

[0010] Based on the above, the crawler-type dredging machine assembly is located between the first anchoring support groups, the first conveyor is located between the outer advance support groups, and the crawler-type transfer machine is located between the rear advance support groups.

[0011] Based on the above, the crawler-type dredge cleaning machine assembly and the conveying mechanism are arranged along the center line of the supporting mechanism.

[0012] The present invention also provides a method for cleaning the bottom drum of a coal mine air lane, comprising the following steps: Provided is a coal mine wind tunnel bottom drum cleaning device; The support mechanism is used to support the ventilation lane, the periphery of the crawler-type cleaning machine assembly, and the periphery of the conveying mechanism; The crawler-type cleaning machine assembly is used to crush and collect the bottom drum of the airway and to transfer the collected gangue and coal slag materials to the conveying mechanism; The conveying mechanism is used to convey the gangue and coal slag materials to the goaf.

[0013] Compared with the prior art, the present invention has outstanding substantial features and significant progress. Specifically, the coal mine wind tunnel bottom drum cleaning device and cleaning method provided by the present invention can crush, collect, transport and discharge the wind tunnel bottom drum, realize the simultaneous operation of crushing and cleaning, reduce the labor intensity of workers, improve the cleaning efficiency, and ensure the smooth mining of the working face. At the same time, it is integrated with the advance support design to realize the bottom cleaning function without reducing the support strength of the wind tunnel advance area, realize the integrated arrangement of equipment in a small space, and improve the propulsion efficiency by using crawler walking. At the same time, the two conveyors overlap and transport to realize the continuous transportation of materials, and can discharge waste materials to the goaf over a long distance. The whole set of equipment has the advantages of compact structure, small space occupation, flexible movement, high efficiency, convenient operation for workers, strong adaptability, etc., which is conducive to the rapid, safe and efficient production of coal mine working faces. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the side structure of the device in the coal mine air lane bottom drum cleaning device and cleaning method provided by the present invention.

[0015] Figure 2 It is a schematic diagram of the top structure of the device in the coal mine air lane bottom drum cleaning device and cleaning method provided by the present invention.

[0016] In the figure: 1. Wind tunnel; 2. Wind tunnel bottom drum; 3. Bucket; 4. Breaker; 5. Mechanical arm; 6. First anchor support group; 7. TBM shovel; 8. Crawler excavator assembly; 9. Outer advance support group; 10. Goaf; 11. Push jack; 12. Rear advance support group; 13. Crawler transfer machine; 14. Scraper; 15. End hydraulic support; 16. Inner advance support group; 17. Second conveyor; 18. First conveyor. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0018] Example 1 This embodiment provides a coal mine wind tunnel bottom drum cleaning device, such as Figure 1 , Figure 2As shown, it includes a crawler-type excavator assembly 8, a conveying mechanism and a supporting mechanism.

[0019] The crawler-type cleaning machine assembly is arranged beside the working surface of the wind tunnel 1, and is used to crush and collect the wind tunnel bottom drum 2 and transfer the collected gangue and coal slag materials to the conveying mechanism. The conveying mechanism is connected to the rear end of the crawler-type cleaning machine assembly, and is used to transport the gangue and coal slag materials to the goaf 10.

[0020] The supporting mechanisms are respectively arranged around the crawler-type cleaning machine assembly and the conveying mechanism, and are used for supporting the wind tunnel.

[0021] Specifically, the crawler type excavator assembly mainly includes crawlers, a frame, a power device, a mechanical arm 5, a tunneling machine shovel 7, a breaker 4 and a bucket 3. The breaker 4 and the bucket 3 are respectively arranged on the mechanical arm 5, and the mechanical arm 5 and the tunneling machine shovel 7 are respectively arranged at the front end of the frame.

[0022] The conveying mechanism includes a first conveyor 18, a crawler conveyor 13 and a second conveyor 17 arranged in sequence along the wind tunnel 1. The first conveyor 18 is connected to the rear end of the crawler excavator assembly 8 to receive the gangue and coal slag materials conveyed from the tunneling machine blade 7. The crawler conveyor 13 is connected to the rear end of the first conveyor 18, and the second conveyor 17 is connected to the rear end of the crawler conveyor 13.

[0023] The support mechanism includes an inner advance bracket group 16, a first anchor bracket group 6, an outer advance bracket group 9, a push jack 11, a rear advance bracket group 12 and an end hydraulic bracket 15. The end hydraulic bracket 15 is arranged at one end of the wind lane 1. The first anchor bracket group 16, the outer advance bracket group 9 and the rear advance bracket group 12 are arranged in sequence along the wind lane 1. The outer advance bracket group 9 and the first anchor bracket group 6, and the outer advance bracket group 9 and the rear advance bracket group 12 are connected respectively by push jacks 11; The inner leading support group 16 is connected to both sides of the first conveyor 18 and moves with the first conveyor 18. The crawler-type excavator assembly 8 is located between the first anchoring support groups 6, the first conveyor 18 is located between the outer leading support groups 9, and the crawler-type loader 13 is located between the rear leading support groups 12.

[0024] Example 2 This embodiment provides a coal mine wind tunnel bottom drum cleaning device, which is mainly different from the embodiment 1 in that, in this embodiment, a support wheel is arranged at the rear of the second conveyor 17. The conveying mechanism also includes a scraper 14 located at one end of the wind tunnel 1, and the scraper 14 is arranged on one side of the end hydraulic support 15.

[0025] Example 3 This embodiment provides a coal mine airway bottom drum cleaning device, and the main difference from Embodiment 1 is that in this embodiment, the crawler cleaning machine assembly and the conveying mechanism are arranged along the center line of the supporting mechanism.

[0026] Example 4 The present embodiment provides a method for cleaning the bottom drum of a coal mine airway using the device described in Example 1, Example 2 or Example 3, comprising the following steps: using the support mechanism to alternately support the airway tunnel, the periphery of the crawler-type cleaning machine assembly and the periphery of the conveying mechanism; using the crawler-type cleaning machine assembly to crush and collect the bottom drum of the airway and transfer the collected gangue and coal slag material to the conveying mechanism; using the conveying mechanism to transport the gangue and coal slag material to the goaf.

[0027] Specifically, in the coal mine wind tunnel bottom drum cleaning device, the crawler-type cleaning machine assembly is located at the front end in the advancing direction of the working face, and the crawler-type cleaning machine assembly is connected to the first conveyor and the inner advance support group.

[0028] The mechanical arm is installed at the front end of the crawler excavator frame. A high-power breaker and bucket are installed on the mechanical arm. The breaker can impact and crush the bottom drum, and the bucket can cage the crushed gangue, coal slag, etc. into the excavator shovel, and transport them to the rear crawler transfer machine through the first conveyor connected to the excavator shovel.

[0029] The inner advance support group is connected to the first conveyor. Before the crawler excavator moves on the crawler tracks, the columns of the inner advance support group are lowered and separated from the top plate. The crawler tracks drive the inner advance support group forward. During the forward movement, the excavator shovel can load the gangue and coal slag after the front end is crushed and transfer them to the first conveyor. After walking a step, the columns of the inner advance support group rise to support the top, completing the stabilization of the vehicle and the support of the top plate. At this time, the bottom drum breaking operation can continue.

[0030] The crawler type loader is arranged at the rear of the wind tunnel, and is mainly composed of crawler tracks, a frame, a power unit, and a hopper. The gangue, coal slag and other waste materials transported by the first conveyor at the front enter the hopper of the crawler type loader, and the gangue waste materials are discharged into the goaf through the second conveyor.

[0031] The crawler loader is used in conjunction with the crawler excavator to always keep the hopper receiving the waste materials transmitted from the front and discharge them into the goaf. The rear of the second conveyor is equipped with support wheels, which can drive the second conveyor to move forward smoothly when the crawler loader moves forward.

[0032] The supporting mechanism is arranged on both outer sides of the air tunnel advance area section to support the tunnel, including the first anchor support group, the outer advance support group, the rear advance support group, and the push jack.

[0033] Specifically, during support, as the working surface moves forward and the crawler excavator moves forward, the first anchor support column shrinks, the support drops and detaches from the top plate, and the first anchor support group is pushed forward by the push jack. After a step, the first anchor support group column rises to support the top plate to complete the support, and then the outer advance support group and the rear advance support group lower the columns and pull and move in turn to achieve the forward pulling and backward pushing of the support. An anti-fall device is connected between the outer advance support group and the rear advance support group to prevent the frame from falling during movement.

[0034] During the specific installation, the entire coal mine wind tunnel bottom drum cleaning device is placed in the wind tunnel, integrated with the advance support design, the inner advance support is fixed on the first conveyor, and moves forward synchronously with the crawler cleaning machine, and completes the support of the advance area together with the outer advance support group. When the inner lowering column moves, the outer advance support group is in the top support state, ensuring that there is always an advance support for top support when the machine is moved, which improves safety.

[0035] On the other hand, the space is staggered, with the inner and outer advance support groups on the crawler transfer machine forming an inside-outside arrangement, and the rear of the second conveyor on the crawler transfer machine is arranged inside the end support, and waste materials such as gangue are discharged into the goaf, thereby rationally utilizing the air lane space and reserving pedestrian space on both sides. The entire system has a reasonable spatial layout and a compact structure.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A coal mine wind tunnel floor drum cleaning device, characterized in that: It includes crawler type excavator assembly, conveying mechanism and supporting mechanism; The crawler-type cleaning machine assembly is arranged beside the working surface of the wind tunnel, and is used to crush and collect the wind tunnel bottom drum and transfer the collected gangue and coal slag materials to the conveying mechanism; The conveying mechanism is connected to the rear end of the crawler-type cleaning machine assembly and is used to convey the gangue and coal slag materials to the goaf; The supporting mechanisms are respectively arranged around the crawler-type cleaning machine assembly and the conveying mechanism, and are used for supporting the wind tunnel.

2. The coal mine airway floor drum cleaning device according to claim 1 is characterized in that: The crawler type excavator assembly mainly includes crawlers, a frame, a power unit, a mechanical arm, a tunneling machine blade, a breaker hammer and a bucket; The breaker hammer and the bucket are respectively arranged on the mechanical arm, and the mechanical arm and the tunnel boring machine shovel are respectively arranged at the front end of the frame.

3. The coal mine airway floor drum cleaning device according to claim 2 is characterized in that: The conveying mechanism includes a first conveyor, a crawler transfer machine and a second conveyor arranged in sequence along the wind tunnel. The first conveyor is connected to the rear end of the crawler excavator assembly and is used to receive gangue and coal slag materials transported from the tunneling machine shovel. The crawler transfer machine is connected to the rear end of the first conveyor, and the second conveyor is connected to the rear end of the crawler transfer machine.

4. The coal mine airway floor drum cleaning device according to claim 3 is characterized in that: The rear portion of the second conveyor is provided with supporting wheels.

5. The coal mine airway floor drum cleaning device according to claim 4 is characterized in that: The conveying mechanism also includes a scraper located at one end of the air lane.

6. The coal mine airway floor drum cleaning device according to claim 5, characterized in that: The support mechanism includes an inner advance support group, a first anchor support group, an outer advance support group, a push jack, a rear advance support group and an end hydraulic support; The end hydraulic support is arranged at one end of the wind lane, and the scraper is arranged on one side of the end hydraulic support; The first anchor bracket group, the outer leading bracket group, and the rear leading bracket group are sequentially arranged along the air lane, and the outer leading bracket group and the first anchor bracket group, as well as the outer leading bracket group and the rear leading bracket group are respectively connected by push jacks; The inner leading bracket group is connected to both sides of the first conveyor and moves with the first conveyor.

7. The coal mine airway floor drum cleaning device according to claim 6 is characterized in that: The crawler-type excavator assembly is located between the first anchor bracket groups, the first conveyor is located between the outer advance bracket groups, and the crawler-type transfer machine is located between the rear advance bracket groups.

8. The coal mine airway floor drum cleaning device according to any one of claims 1 to 7, characterized in that: The crawler-type dredge cleaning machine assembly and the conveying mechanism are arranged along the center line of the supporting mechanism.

9. A method for cleaning the bottom drum of a coal mine wind tunnel, comprising the following steps: Provided is a coal mine airway floor drum cleaning device according to any one of claims 1 to 8; The support mechanism is used to support the ventilation lane, the periphery of the crawler-type cleaning machine assembly, and the periphery of the conveying mechanism; The crawler-type cleaning machine assembly is used to crush and collect the bottom drum of the airway and to transfer the collected gangue and coal slag materials to the conveying mechanism; The conveying mechanism is used to convey the gangue and coal slag materials to the goaf.

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