One-machine double-roadway driving face efficient construction technology

Abstract

The invention relates to the technical field of tunneling construction, in particular to a one-machine double-roadway tunneling working face efficient construction technology which comprises the following steps that firstly, coal cutting is conducted on a roadway on one side through a continuous coal mining machine, a working face is ventilated through a ventilation device, the working face is withdrawn after advancing by a certain distance, and the ventilation device is separated; an auxiliary ventilation system is left to stay on the working face for continuous ventilation, and roof safety inspection and temporary supporting are conducted in the ventilation process; secondly, the roadway is supported from outside to inside, and the continuous miner drives a main ventilation system of the ventilation device to be synchronously adjusted to the roadway on the other side for tunneling; and thirdly, the main ventilation system and the auxiliary ventilation system in the roadway on the other side are assembled to form the complete ventilation device. According to the device, through the arrangement of the auxiliary ventilation system and the main ventilation system, flying dust in the roadway can be reduced, and a good working environment is provided for workers and equipment in the roadway.

Description

Technical Field

[0001] The present invention relates to the field of tunneling construction, and particularly to an efficient construction process for a tunneling face with one machine and two roadways. Background Art

[0002] The rapid tunneling construction process of one machine and two roadways in a tunneling face is an efficient coal mine roadway tunneling technology. It significantly improves the tunneling efficiency and optimizes resource allocation by using one roadheader-anchoring machine to simultaneously excavate two parallel roadways (such as the main roadway and the auxiliary roadway). This construction method can not only reduce the input of equipment and personnel, but also better meet the tunneling requirements under complex geological conditions.

[0003] During the tunneling construction of one machine and two roadways, since a large amount of dust is generated during the construction process, it is necessary to continuously ventilate during the construction process to handle the dust. During the construction of two roadways, since the amount of dust generated during the tunneling process is different from that during the support process, and there are continuous workers at this time, it is necessary to continuously carry out ventilation and dust removal. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to propose an efficient construction process for a tunneling face with one machine and two roadways.

[0005] In the first aspect, the present invention provides an efficient construction process for a tunneling face with one machine and two roadways, including the following steps:

[0006] Step 1: Cut coal in one side roadway with a continuous miner, ventilate the working face through a ventilation device, withdraw from the working face after advancing a certain distance and separate the ventilation device, leaving the auxiliary ventilation system staying in the working face for continuous ventilation, and conduct roof safety inspection and temporary support during ventilation;

[0007] Step 2: Support the roadway from the outside to the inside, and the main ventilation system of the ventilation device driven by the continuous miner is synchronously adjusted to the other side roadway for tunneling;

[0008] Step 3: Assemble the main ventilation system with the auxiliary ventilation system inside the other side roadway to form a complete ventilation device, and the continuous miner cuts coal while ventilating the working face through the ventilation device;

[0009] Step 4: When the continuous miner completes one cycle of tunneling, adjust the machine, retreat the continuous miner to the back roadway, and use a loader to clean up the floating coal from tunneling.

[0010] Preferably, the ventilation device includes:

[0011] The auxiliary ventilation system matches with the main ventilation system to form the complete ventilation device;

[0012] A sealing assembly is installed between the main ventilation system and the auxiliary ventilation system for sealing connection between the two.

[0013] The auxiliary ventilation system includes:

[0014] A first ventilation box, which includes an air inlet end and a first exhaust end.

[0015] A filtering assembly is installed inside the first ventilation box for filtering the air flow passing through the inside of the first ventilation box to clean the dust.

[0016] A first fan is fixed inside the first ventilation box through a first partition board for driving the air flow through the filtering assembly.

[0017] The main ventilation system includes:

[0018] A second ventilation box, which includes a second exhaust end.

[0019] A pressurizing assembly is installed inside the second ventilation box for pressurizing and ventilating the inside of the first ventilation box after the connection between the main ventilation system and the auxiliary ventilation system, and cleaning the filtering assembly during the pressurization process.

[0020] A conveying assembly is installed inside the second ventilation box for conveying the dust after cleaning by the filtering assembly.

[0021] The second ventilation box is fixedly installed on a continuous miner, and the first ventilation box is placed inside the roadway. When the continuous miner is working inside the roadway, the second ventilation box is aligned with the first ventilation box. When the first ventilation box and the second ventilation box are aligned, they are assembled and sealed by the sealing assembly, so that the inside of the first ventilation box and the second ventilation box are communicated. At this time, the first fan and the pressurizing assembly are started simultaneously. After the first fan is started, it drives the air flow to circulate along the trajectory of the air inlet end, the filter core and the first exhaust end, so that the air flow drives the dust into the inside of the first ventilation box, and the filtering assembly inside the first ventilation box filters the dust. The pressurizing assembly can be started simultaneously to increase the air flow velocity flowing through the first ventilation box, thereby enhancing the filtering effect on the air flow, which is beneficial to avoiding excessive dust in the air from causing adverse effects on the staff and equipment.

[0022] When the continuous miner is transferred to the interior of another roadway, the tunneling inside this roadway stops. At this time, the amount of dust in the roadway decreases. At this time, the first ventilation box is separated from the second ventilation box. The main ventilation system is transferred to the interior of another roadway along with the continuous miner, while the auxiliary ventilation system is always arranged inside this roadway. At this time, the air flow driving effect is maintained inside the auxiliary ventilation system through the first fan, so that the auxiliary ventilation system always maintains the filtering effect. At the same time, the filtering component stores the filtered dust, so that the stored dust is discharged when assembled with the second ventilation box. Thus, there is no need to transfer the ventilation device inside the roadway. When the continuous miner is working, the ventilation effect can be increased, and when the continuous miner is transferred, the ventilation can be maintained through the remaining auxiliary ventilation system, which is conducive to reducing the dust in the roadway and providing a good working environment for the staff and equipment inside the roadway.

[0023] Preferably, the sealing component includes:

[0024] A sealing strip fixed to the edges of the opposite sides of the first ventilation box and the second ventilation box;

[0025] Two clamping cavities symmetrically opened on the side wall of the first ventilation box;

[0026] Two first screws respectively fixed inside the two clamping cavities;

[0027] Two second screws symmetrically fixed on the side wall of the second ventilation box, and the two second screws are respectively aligned with the two first screws;

[0028] Two first gears respectively thread sleeved on the outer circles of the two first screws, and the first gears are thread-mated with the second screws;

[0029] Two second gears respectively rotatably installed inside the two clamping cavities, and the two second gears are respectively meshed with the two first gears;

[0030] Two first motors respectively installed inside the two second ventilation boxes, and the two first motors respectively drive the two second gears to rotate;

[0031] When the first ventilation box is aligned with the second ventilation box, start the first motor. After the first motor is started, it drives the second gear connected thereto to rotate through the output shaft. After the second gear rotates, it drives the first gear meshed therewith to rotate. After the first gear rotates, it moves through the thread action with the first screw, so that the first gear moves along the first screw and the second screw. When the first gear moves along the second screw, the first ventilation box is pulled to fit with the second ventilation box through the movement of the first gear, so that the first ventilation box and the second ventilation box are tightly fitted through the sealing strip to improve the sealing effect, thus realizing the assembly of the first ventilation box and the second ventilation box.

[0032] Preferably, the sealing assembly further includes:

[0033] A plurality of first magnets, with four of the first magnets as a group and two of the first magnets as a subgroup. The two subgroups of the first magnets in the same large group are respectively fixed on the opposite sides of the first ventilation box and the second ventilation box, and the opposite magnetic poles of the two subgroups of the first magnets in the same large group face each other, and the magnetic poles of the two first magnets in the same subgroup are opposite to each other;

[0034] Two pressure sensors, respectively fixed to the ends of the two first screws;

[0035] When the two subgroups of the first magnets in the same large group are aligned, when the first ventilation box and the second ventilation box are aligned, the first magnets attract each other with opposite magnetic poles. When there is a deviation between the first ventilation box and the second ventilation box, the first magnets are not aligned, resulting in the misalignment of the magnetic poles of the first magnets, so that the first magnets generate a repulsive force with the adjacent first magnets with the same magnetic poles, thereby pushing the first ventilation box and the second ventilation box through the magnetic force to assist the alignment of the first ventilation box and the second ventilation box, thus facilitating the alignment of the first ventilation box and the second ventilation box. When the first ventilation box and the second ventilation box are aligned, the first screw is aligned with the second screw, causing the pressure sensor to be pressed, so that the alignment of the first ventilation box and the second ventilation box can be detected. After detecting the alignment of the first ventilation box and the second ventilation box, the pressurizing assembly is started, which is beneficial to immediately start the pressurizing assembly after the first ventilation box and the second ventilation box are hermetically aligned to enhance the ventilation inside the roadway, thereby facilitating the improvement of construction efficiency.

[0036] Preferably, the filtering assembly includes:

[0037] A filter element, fixedly installed inside the first ventilation box;

[0038] A partition plate, fixed inside the first ventilation box, dividing the interior of the first ventilation box into a first filtering space and a second filtering space, and the air flows through the filter element in both the first filtering space and the second filtering space;

[0039] One end of both the first filtering space and the second filtering space facing the second ventilation box penetrates through the side wall of the first ventilation box to form an opening;

[0040] Two second pushing frames, respectively slidably inserted into the first filtering space and the second filtering space, and the ends of the two second pushing frames are hermetically inserted into the opening;

[0041] A switching assembly, installed inside the first ventilation box, for switching the ventilation states of the first filtering space and the second filtering space;

[0042] When the airflow drives the dust to pass through the inside of the first ventilation box, through the setting of the switching component, the ventilation states of the first filtering space and the second filtering space can be switched. When the first filtering space or the second filtering space is in the ventilation state, the airflow passes through the inside of the first filtering space or the second filtering space. After the airflow passes through the inside of the first filtering space and the second filtering space, the dust is filtered by the filter core and remains inside the first filtering space or the second filtering space, while the airflow is discharged after passing through the filter core, thereby realizing the function of filtering the dust in the air;

[0043] Through the setting of the first filtering space and the second filtering space, the space inside the first ventilation box is divided, so that when one of the first filtering space or the second filtering space is being cleaned, the other can be used for continuous ventilation and filtering, which is beneficial to continuously maintaining the ventilation and filtering effect of the device.

[0044] Preferably, the pressurizing component includes:

[0045] A second fan, fixed inside the second ventilation box through a second partition board;

[0046] A filter box, fixed on the side wall of the second partition board and covering the second fan;

[0047] Two first lead screws, respectively threadedly connected to the two second pushing frames and rotatably connected to the inner wall of the first ventilation box;

[0048] Two second lead screws, both rotatably installed inside the second ventilation box and in plug-in fit with the first lead screws, and the second lead screws are in threaded fit with the second pushing frames;

[0049] Two second motors, both fixed on the side wall of the second ventilation box, respectively driving the two second lead screws to rotate through the output shafts;

[0050] After the first ventilation box is aligned with the second ventilation box, the second fan is started, and at the same time, one of the second motors is started. After the second motor is started, it drives the second lead screw connected thereto to rotate. After the second lead screw rotates, it drives the first lead screw inserted and connected thereto to rotate. After the first lead screw and the second lead screw rotate, they drive the second push frame threadedly connected thereto to move. On the one hand, when the second push frame moves, it pushes the dust collected inside the first filtration space or the second filtration space towards the inside of the second ventilation box, so that the dust falls on the conveying assembly, thereby realizing the cleaning of the dust collected inside the first filtration space and the second filtration space. On the other hand, after the second push frame moves out of the inside of the first filtration space or the second filtration space, the end of the second push frame loses the blockage of the first filtration space or the second filtration space. When the second fan is started to extract the air inside the second ventilation box, a negative pressure is formed inside the second ventilation box. When the first filtration space or the second filtration space is communicated, a negative pressure is formed inside the first filtration space or the second filtration space, so that the first filtration space or the second filtration space performs auxiliary suction on the space inside where the first fan is located, which is beneficial to enhancing the air flow velocity inside the first ventilation box and beneficial to enhancing the ventilation and filtration effect of the air. Therefore, it is beneficial to realize the cleaning inside the first ventilation box and the enhancement of the air flow inside the first ventilation box after the first ventilation box and the second ventilation box are combined, and beneficial to improving the ventilation and filtration effect of the air.

[0051] Preferably, the filter assembly further includes:

[0052] Two moving frames, respectively fixed to the inner walls of the two second push frames;

[0053] Two groups of cleaning brushes, with multiple cleaning brushes in one group. The cleaning brushes in the same group are respectively rotatably installed in the two moving frames in a linear array, and the cleaning brushes are used to clean the filter element;

[0054] Multiple third gears, respectively coaxially fixed to the tops of the respective cleaning brushes and respectively rotatably installed in the two moving frames;

[0055] Two fourth gears, respectively rotatably installed in the two second push frames, and the two fourth gears are respectively meshed with the adjacent third gears;

[0056] Two racks, respectively fixed to the first filtration space and the second filtration space, and the two racks are respectively meshed with the two fourth gears;

[0057] The second driving frame drives the moving frame and the fourth gear to move synchronously. When the fourth gear moves, it drives the fourth gear to rotate through the meshing action with the rack. After the fourth gear rotates, it drives the third gear meshing with it to rotate. The third gear drives the remaining third gears to rotate, and the third gear drives the cleaning brush to rotate. Thus, when the second driving frame pushes and cleans inside the first filtering space or the second filtering space, it can synchronously brush and clean the filter element, which is beneficial to restoring a certain filtering effect of the filter element, delaying the decline of the filtering efficiency caused during the working process of the filter element, and prolonging the service life of the filter element.

[0058] Preferably, the filtering assembly further includes:

[0059] A mounting frame, fixed inside the first ventilation box and located between the filter element and the first fan;

[0060] A wind wheel, rotatably mounted on the side wall of the mounting frame;

[0061] A first bevel gear, coaxially fixed to the rotating shaft of the wind wheel;

[0062] A vibration roller, rotatably mounted on the mounting frame;

[0063] A second bevel gear, coaxially fixed to the rotating shaft of the vibration roller, and the second bevel gear meshes with the first bevel gear;

[0064] During the airflow movement, it drives the wind wheel to rotate. After the wind wheel rotates, it drives the first bevel gear to rotate. After the first bevel gear rotates, it drives the second bevel gear meshing with it to rotate. After the second bevel gear rotates, it drives the vibration roller to rotate. When the vibration roller rotates, it produces a knocking effect on the filter element, so that the filter element vibrates when there is airflow. Thus, while filtering the dust, the vibration of the filter element causes the dust attached to the filter element to fall downward, which is beneficial to slowing down the blockage of the filter element and improving the filtering effect on the airflow.

[0065] Preferably, the switching assembly includes:

[0066] Two first grid plates, respectively fixed to one ends of the first filtering space and the second filtering space facing away from the filter element;

[0067] A mounting box, installed inside the first ventilation box;

[0068] Two cylinders, symmetrically fixed inside the mounting box;

[0069] Two first driving frames, slidably installed inside the first ventilation box, and the two cylinders respectively drive the two first driving frames to move;

[0070] Two second grid plates are respectively fixed to the ends of the two first pushing frames. When the first pushing frames extrude the first grid plates, a seal is formed.

[0071] After the air cylinder is started, it drives the first pushing frame to move. The first pushing frame drives the second grid plate to move. When the second grid plate moves to extrude the first grid plate, the first grid plate and the second grid plate block each other to form a seal, thereby sealing the first filtering space or the second filtering space. When the air cylinder drives the second grid plate to disengage from the first grid plate, the air flow can circulate normally, thereby realizing the switching of the ventilation state of the first filtering space and the second filtering space.

[0072] Preferably, the conveying assembly includes:

[0073] A conveyor belt installed inside the second ventilation box;

[0074] An inclined plane fixed to the inner wall of the second ventilation box and located above the conveyor belt to form a guide;

[0075] A hinged cover is hingedly installed at the end of the discharge opening of the second ventilation box, and a second magnet is fixed to the top of the hinged cover;

[0076] An electromagnet is fixedly installed on the side wall of the second ventilation box through a mounting frame;

[0077] The conveyor belt drives the dust falling on it to move. After the electromagnet is energized, it generates magnetism, so that the electromagnet generates a magnetic attraction force on the second magnet, driving the second magnet and the hinged cover to flip. After the hinged cover is opened, the conveyor belt drives the dust to be conveyed outwards, and the dust can be conveyed to the conveyor belt for gangue, so as to convey and transport it out;

[0078] When the electromagnet is powered off, a negative pressure is generated inside the second ventilation box within the second fan. The negative pressure acts to adsorb the hinged cover, so that the hinged cover fits the discharge opening of the second ventilation box to form a seal through the negative pressure effect, which is beneficial to avoid the situation that the air leakage at the discharge opening affects the pressurization effect.

[0079] Compared with the prior art, the present invention has the following beneficial effects:

[0080] 1. Through the setting of the auxiliary ventilation system and the main ventilation system, the present invention enables the inside of the roadway not to require the transfer of ventilation devices. When the continuous miner is working, the ventilation effect can be increased, and when the continuous miner is transferred, the ventilation can be maintained through the remaining auxiliary ventilation system, which is beneficial to reducing the dust in the roadway and providing a good working environment for the staff and equipment inside the roadway.

[0081] 2. Through the arrangement of the pressurizing component, the present invention is conducive to realizing the cleaning of the inside of the first ventilation box and the enhancement of the air flow inside the first ventilation box after the combination of the first ventilation box and the second ventilation box, which is beneficial to improving the effect of ventilating and filtering the air.

[0082] 3. Through the arrangement of the cleaning brush, the filter element can be synchronously brushed and cleaned, which is beneficial to restoring a certain filtering effect of the filter element, thus delaying the decline of the filtering efficiency caused by the filter element during operation and prolonging the service life of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Figure 1 is a schematic process flow diagram of the present invention.

[0084] Figure 2 is a schematic structural diagram of the ventilation device of the present invention.

[0085] Figure 3 is a schematic structural diagram of the ventilation device of the present invention after sectioning Figure 1 .

[0086] Figure 4 is a schematic sectional view of the first ventilation box of the present invention.

[0087] Figure 5 is of the present invention Figure 4 an enlarged structural diagram of part A in

[0088] Figure 6 is of the present invention Figure 4 an enlarged structural diagram of part B in

[0089] Figure 7 is a schematic sectional view of the auxiliary ventilation system of the present invention.

[0090] Figure 8 is of the present invention Figure 7 an enlarged structural diagram of part C in

[0091] Figure 9 is a schematic sectional view of the ventilation device of the present invention Figure 2 .

[0092] Figure 10 is of the present invention Figure 9 an enlarged structural diagram of part D in

[0093] In the figure: 1. First ventilation box; 101. Intake end; 102. First exhaust end; 2. Second ventilation box; 201. Second exhaust end; 3. Filter element; 301. First filtration space; 302. Second filtration space; 4. First fan; 401. First partition board; 501. First grid board; 502. Second grid board; 503. First pushing frame; 504. Installation box; 505. Cylinder; 6. First magnet; 701. First screw rod; 702. Second screw rod; 703. Clamping cavity; 704. First gear; 705. Pressure sensor; 706. Second gear; 707. First motor; 8. Conveyor belt; 801. Inclined plane; 9. Second pushing frame; 901. First lead screw; 902. Second lead screw; 903. Second motor; 10. Second fan; 1001. Second partition board; 1002. Filter frame; 11. Hinged cover; 1101. Electromagnet; 1102. Second magnet; 1103. Installation frame; 12. Moving frame; 1201. Cleaning brush; 1202. Third gear; 1203. Fourth gear; 1204. Rack; 13. Wind wheel; 1301. First bevel gear; 1302. Installation rack; 1303. Vibration roller; 1304. Second bevel gear. Detailed implementation mode

[0094] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0095] As Figures 1 to 10 shown, a high-efficiency construction process for a heading face with one machine and two roadways includes the following steps:

[0096] Step 1: Cut coal in one roadway through a continuous miner, ventilate the working face through a ventilation device, withdraw from the working face after advancing a certain distance and separate the ventilation device, leaving the auxiliary ventilation system in the working face for continuous ventilation, and conduct roof safety inspections and temporary support during ventilation.

[0097] Step 2: Support the roadway from the outside to the inside, and the main ventilation system of the ventilation device driven by the continuous miner is synchronously adjusted to the other roadway for tunneling.

[0098] Step 3: Assemble the main ventilation system with the auxiliary ventilation system inside the other roadway to form a complete ventilation device, and the continuous miner cuts coal while ventilating the working face through the ventilation device.

[0099] Step 4: When the continuous miner completes one cycle of tunneling, adjust the machine, retreat the continuous miner to the back roadway, and use a loader to clean up the floating coal in the tunneling.

[0100] As an optional embodiment, the ventilation device includes:

[0101] The auxiliary ventilation system matches with the main ventilation system to form a complete ventilation device;

[0102] A sealing component, installed between the main ventilation system and the auxiliary ventilation system, is used for sealing and connecting the two;

[0103] The auxiliary ventilation system includes:

[0104] The first ventilation box 1, the first ventilation box 1 includes an air inlet end 101 and a first exhaust end 102;

[0105] A filtering component, installed inside the first ventilation box 1, is used for filtering the air flow passing through the inside of the first ventilation box 1 to clean the dust;

[0106] The first fan 4, fixed inside the first ventilation box 1 through a first partition board 401, is used for driving the air flow through the filtering component;

[0107] The main ventilation system includes:

[0108] The second ventilation box 2, the second ventilation box 2 includes a second exhaust end 201;

[0109] A pressurizing component, installed inside the second ventilation box 2, is used for pressurizing and ventilating the inside of the first ventilation box 1 after the main ventilation system is connected to the auxiliary ventilation system, and cleaning the filtering component during the pressurizing process;

[0110] A conveying component, installed inside the second ventilation box 2, is used for conveying the dust after the filtering component is cleaned;

[0111] During the tunneling construction of one machine in two headings, since a large amount of dust will be generated during the construction process, it is necessary to continuously ventilate during the construction process to handle the dust. During the double-heading construction process, since the amount of dust generated during the tunneling process is different from that during the support process, and there are continuous workers at this time, it is necessary to continuously carry out ventilation and dust removal;

[0112] This embodiment of the present invention can solve the above problems. The specific implementation is as follows. The second ventilation box 2 is fixedly installed on the continuous miner, and the first ventilation box 1 is placed inside the roadway. When the continuous miner is working inside the roadway, the second ventilation box 2 is aligned with the first ventilation box 1. When the first ventilation box 1 is aligned with the second ventilation box 2, the two are assembled and sealed through the sealing component, so that the interiors of the first ventilation box 1 and the second ventilation box 2 are communicated. At this time, the first fan 4 and the pressurizing component are started simultaneously. After the first fan 4 is started, it drives the air flow to circulate along the trajectory of the air inlet end 101, the filter element 3, and the first exhaust end 102, so that the air flow drives the dust to enter the interior of the first ventilation box 1, and the filter component inside the first ventilation box 1 filters the dust. The pressurizing component can be started simultaneously to increase the air flow velocity flowing through the first ventilation box 1, thereby enhancing the filtering effect on the air flow, which is beneficial to avoiding excessive dust in the air from causing adverse effects on the staff and equipment;

[0113] When the continuous miner is transferred to another roadway, the tunneling inside this roadway stops. At this time, the amount of dust in the roadway decreases. At this time, the first ventilation box 1 and the second ventilation box 2 are separated. The main ventilation system is transferred to another roadway along with the continuous miner, while the auxiliary ventilation system is always set inside this roadway. At this time, the air flow driving effect is maintained inside the auxiliary ventilation system through the first fan 4, so that the auxiliary ventilation system always maintains the filtering effect. At the same time, the filter component stores the filtered dust, so that the stored dust is discharged when assembled with the second ventilation box 2. Therefore, there is no need to transfer the ventilation device inside the roadway. When the continuous miner is working, the ventilation effect can be increased, and when the continuous miner is transferred, the ventilation can be maintained through the remaining auxiliary ventilation system, which is beneficial to reducing the dust in the roadway and providing a good working environment for the staff and equipment inside the roadway.

[0114] As an alternative embodiment, the sealing component includes:

[0115] The sealing strip is fixed to the edge of the opposite sides of the first ventilation box 1 and the second ventilation box 2;

[0116] Two clamping cavities 703 are symmetrically opened on the side wall of the first ventilation box 1;

[0117] Two first screws 701 are respectively fixed inside the two clamping cavities 703;

[0118] Two second screws 702 are symmetrically fixed on the side wall of the second ventilation box 2, and the two second screws 702 are respectively aligned with the two first screws 701;

[0119] Two first gears 704 are respectively thread sleeved on the outer circles of the two first screws 701, and the first gear 704 is threadedly adapted to the second screw 702;

[0120] Two second gears 706 are respectively rotatably installed inside two clamping cavities 703, and the two second gears 706 are respectively meshed with the two first gears 704;

[0121] Two first motors 707 are respectively installed inside the two second ventilation boxes 2, and the two first motors 707 respectively drive the two second gears 706 to rotate;

[0122] When the first ventilation box 1 is aligned with the second ventilation box 2, start the first motor 707. After the first motor 707 is started, it drives the second gear 706 connected thereto to rotate through the output shaft. After the second gear 706 rotates, it drives the first gear 704 meshed therewith to rotate. After the first gear 704 rotates, it moves due to the threaded action with the first screw 701, so that the first gear 704 moves along the first screw 701 and the second screw 702. When the first gear 704 moves along the second screw 702, the movement of the first gear 704 pulls the first ventilation box 1 and the second ventilation box 2 to fit together, so that the first ventilation box 1 and the second ventilation box 2 are tightly fitted through the sealing strip to improve the sealing effect, thereby realizing the assembly of the first ventilation box 1 and the second ventilation box 2.

[0123] As an alternative embodiment, the sealing assembly further includes:

[0124] A plurality of first magnets 6, with four first magnets 6 as a group and two first magnets 6 as a subgroup. The two subgroups of the first magnets 6 in the same large group are respectively fixed on the opposite sides of the first ventilation box 1 and the second ventilation box 2, and the opposite magnetic poles face each other between the two subgroups of the first magnets 6 in the same large group, and the magnetic poles of the two first magnets 6 in the same subgroup are opposite to each other;

[0125] Two pressure sensors 705 are respectively fixed at the ends of the two first screws 701;

[0126] When the first magnets 6 of two subgroups in the same large group are aligned, when the first ventilation box 1 is aligned with the second ventilation box 2, the opposite magnetic poles of the first magnets 6 attract each other. When there is a deviation between the first ventilation box 1 and the second ventilation box 2, the first magnets 6 are not aligned with each other, resulting in the non-alignment of the magnetic poles of the first magnets 6, so that the same magnetic poles of the first magnets 6 aligned with adjacent first magnets 6 repel each other, thereby pushing the first ventilation box 1 and the second ventilation box 2 through the magnetic force to assist in the alignment of the first ventilation box 1 and the second ventilation box 2, thus facilitating the alignment of the first ventilation box 1 and the second ventilation box 2. When the first ventilation box 1 is aligned with the second ventilation box 2, the first screw rod 701 is aligned with the second screw rod 702, so that the pressure sensor 705 is pressed, thereby enabling the alignment of the first ventilation box 1 and the second ventilation box 2 to be detected. After detecting the alignment of the first ventilation box 1 and the second ventilation box 2, the pressurization assembly is started, which is beneficial to starting the pressurization assembly immediately after the first ventilation box 1 and the second ventilation box 2 are hermetically aligned to enhance the ventilation inside the roadway, thus facilitating the improvement of the construction efficiency.

[0127] As an alternative embodiment, the filtering assembly includes:

[0128] A filter element 3, fixedly installed inside the first ventilation box 1;

[0129] A partition plate, fixed inside the first ventilation box 1, dividing the interior of the first ventilation box 1 into a first filtering space 301 and a second filtering space 302, and the air flows passing through the first filtering space 301 and the second filtering space 302 both pass through the filter element 3;

[0130] One end of the first filtering space 301 and the second filtering space 302 facing the second ventilation box 2 both penetrate through the side wall of the first ventilation box 1 to form openings;

[0131] Two second pushing frames 9 are respectively slidably inserted into the interiors of the first filtering space 301 and the second filtering space 302, and the ends of the two second pushing frames 9 are hermetically inserted into the openings;

[0132] A switching assembly, installed inside the first ventilation box 1, for switching the ventilation states of the first filtering space 301 and the second filtering space 302;

[0133] When the airflow drives the dust to pass through the inside of the first ventilation box 1, through the setting of the switching component, the ventilation states of the first filtering space 301 and the second filtering space 302 can be switched. When the first filtering space 301 or the second filtering space 302 is in the ventilation state, the airflow passes through the inside of the first filtering space 301 or the second filtering space 302. After the airflow passes through the inside of the first filtering space 301 and the second filtering space 302, the dust is filtered by the filter element 3 and remains inside the first filtering space 301 or the second filtering space 302, while the airflow is discharged after passing through the filter element 3, thereby realizing the function of filtering the dust in the air;

[0134] Through the settings of the first filtering space 301 and the second filtering space 302, the space inside the first ventilation box 1 is divided, so that when one of the first filtering space 301 or the second filtering space 302 is being cleaned, continuous ventilation filtration can be carried out through the other, which is beneficial to continuously maintaining the ventilation filtration effect of the device.

[0135] As an optional embodiment, the pressurization component includes:

[0136] The second fan 10 is fixed inside the second ventilation box 2 through the second partition plate 1001;

[0137] The filter box 1002 is fixed on the side wall of the second partition plate 1001 and covers the second fan 10;

[0138] Two first lead screws 901 are respectively threadedly connected to the two second push frames 9 and are rotatably connected to the inner wall of the first ventilation box 1;

[0139] Two second lead screws 902 are both rotatably installed inside the second ventilation box 2 and are inserted and adapted to the first lead screws 901, and the second lead screws 902 are threadedly adapted to the second push frames 9;

[0140] Two second motors 903 are both fixed on the side wall of the second ventilation box 2 and respectively drive the two second lead screws 902 to rotate through the output shafts;

[0141] After the first ventilation box 1 is aligned with the second ventilation box 2, the second fan 10 is started, and at the same time, one of the second motors 903 is started. After the second motor 903 is started, it drives the connected second lead screw 902 to rotate. After the second lead screw 902 rotates, it drives the first lead screw 901 inserted and connected thereto to rotate. After the first lead screw 901 and the second lead screw 902 rotate, they drive the second pushing frame 9 threadedly connected thereto to move. On the one hand, when the second pushing frame 9 moves, it pushes the dust collected inside the first filtering space 301 or the second filtering space 302 to move towards the inside of the second ventilation box 2, so that the dust falls on the conveying assembly, thereby realizing the cleaning of the dust collected inside the first filtering space 301 and the second filtering space 302. On the other hand, after the second pushing frame 9 moves out of the inside of the first filtering space 301 or the second filtering space 302, the end of the second pushing frame 9 loses the blockage of the first filtering space 301 or the second filtering space 302, so that after the second fan 10 starts to extract the air inside the second ventilation box 2, a negative pressure is formed inside the second ventilation box 2. When the first filtering space 301 or the second filtering space 302 is connected, a negative pressure is formed inside the first filtering space 301 or the second filtering space 302, so that the first filtering space 301 or the second filtering space 302 assists in sucking the air inside the space where the first fan 4 is located, which is beneficial to enhancing the air flow velocity inside the first ventilation box 1, beneficial to enhancing the ventilation and filtering effect of the air, and thus beneficial to realizing the cleaning inside the first ventilation box 1 and the enhancement of the air flow inside the first ventilation box 1 after the first ventilation box 1 and the second ventilation box 2 are combined, and beneficial to improving the ventilation and filtering effect of the air.

[0142] As an optional embodiment, the filtering assembly further includes:

[0143] Two moving frames 12, which are respectively fixed on the inner walls of the two second pushing frames 9;

[0144] Two groups of cleaning brushes 1201, with multiple cleaning brushes 1201 as a group. The cleaning brushes 1201 in the same group are respectively rotatably installed in the two moving frames 12 in a linear array, and the cleaning brushes 1201 are used for cleaning the filter core 3;

[0145] Multiple third gears 1202, which are respectively coaxially fixed on the tops of the respective cleaning brushes 1201 and are respectively rotatably installed in the two moving frames 12;

[0146] Two fourth gears 1203, which are respectively rotatably installed in the two second pushing frames 9, and the two fourth gears 1203 are respectively meshed with the adjacent third gears 1202;

[0147] Two racks 1204, which are respectively fixed on the first filtering space 301 and the second filtering space 302, and the two racks 1204 are respectively meshed with the two fourth gears 1203;

[0148] The second driving frame 9 drives the moving frame 12 and the fourth gear 1203 to move synchronously. When the fourth gear 1203 moves, it drives the fourth gear 1203 to rotate through the meshing action with the rack 1204. After the fourth gear 1203 rotates, it drives the third gear 1202 meshing with it to rotate. The third gear 1202 drives the remaining third gears 1202 to rotate, and the third gear 1202 drives the cleaning brush 1201 to rotate. Thus, when the second driving frame 9 pushes inside the first filtering space 301 or the second filtering space 302 for cleaning, it can synchronously brush and clean the filter element 3, which is beneficial to restoring a certain filtering effect of the filter element 3, delaying the decline of the filtering efficiency caused during the working process of the filter element 3, and prolonging the service life of the filter element 3.

[0149] As an alternative embodiment, the filtering assembly further includes:

[0150] A mounting frame 1302, fixed inside the first ventilation box 1 and located between the filter element 3 and the first fan 4;

[0151] A wind wheel 13, rotatably mounted on the side wall of the mounting frame 1302;

[0152] A first bevel gear 1301, coaxially fixed on the rotating shaft of the wind wheel 13;

[0153] A vibration roller 1303, rotatably mounted on the mounting frame 1302;

[0154] A second bevel gear 1304, coaxially fixed on the rotating shaft of the vibration roller 1303, and the second bevel gear 1304 meshes with the first bevel gear 1301;

[0155] During the airflow process, the wind wheel 13 is driven to rotate. After the wind wheel 13 rotates, it drives the first bevel gear 1301 to rotate. After the first bevel gear 1301 rotates, it drives the second bevel gear 1304 meshing with it to rotate. After the second bevel gear 1304 rotates, it drives the vibration roller 1303 to rotate. When the vibration roller 1303 rotates, it produces a knocking effect on the filter element 3, so that the filter element 3 vibrates when there is airflow. Thus, while filtering the dust, the vibration makes the dust attached to the filter element 3 fall downward, which is beneficial to reducing the blockage of the filter element 3 and improving the filtering effect on the airflow.

[0156] As an alternative embodiment, the switching assembly includes:

[0157] Two first grid plates 501, respectively fixed at one end of the first filtering space 301 and the second filtering space 302 facing away from the filter element 3;

[0158] A mounting box 504, mounted inside the first ventilation box 1;

[0159] Two cylinders 505 are symmetrically fixed inside the mounting box 504;

[0160] Two first push frames 503 are slidably mounted inside the first ventilation box 1, and the two cylinders 505 drive the two first push frames 503 to move respectively;

[0161] Two second grid plates 502 are respectively fixed to the ends of the two first push frames 503, and a seal is formed when the first push frame 503 presses the first grid plate 501;

[0162] After the cylinder 505 is started, it drives the first push frame 503 to move. The first push frame 503 drives the second grid plate 502 to move. When the second grid plate 502 moves to press the first grid plate 501, the first grid plate 501 and the second grid plate 502 block each other to form a seal, thereby sealing the first filtering space 301 or the second filtering space 302. When the cylinder 505 drives the second grid plate 502 to disengage from the first grid plate 501, the air flow can circulate normally, thereby realizing the ventilation state switching of the first filtering space 301 and the second filtering space 302.

[0163] As an alternative embodiment, the conveying assembly includes:

[0164] A conveyor belt 8 is installed inside the second ventilation box 2;

[0165] An inclined surface 801 is fixed to the inner wall of the second ventilation box 2 and forms a guide above the conveyor belt 8;

[0166] A hinged cover 11 is hingedly installed at the end of the discharge opening of the second ventilation box 2, and a second magnet 1102 is fixed to the top of the hinged cover 11;

[0167] An electromagnet 1101 is fixedly installed on the side wall of the second ventilation box 2 through a mounting frame 1103;

[0168] The conveyor belt 8 drives the dust falling on it to move. After the electromagnet 1101 is energized, it generates magnetism, so that the electromagnet 1101 generates a magnetic attraction force on the second magnet 1102, driving the second magnet 1102 and the hinged cover 11 to flip. After the hinged cover 11 is opened, the conveyor belt 8 drives the dust to be conveyed outwards, and the dust can be conveyed to the conveyor belt for gangue, so as to convey and transport it out;

[0169] When the electromagnet 1101 is powered off, a negative pressure is generated inside the second ventilation box 2 inside the second fan 10. The negative pressure acts to adsorb the hinged cover 11, so that the hinged cover 11 fits the discharge opening of the second ventilation box 2 to form a seal through the negative pressure action, which is beneficial to avoid the situation that the air leakage at the discharge opening affects the pressurization effect.

[0170] Working principle of the present invention: The second ventilation box 2 is fixedly installed on the continuous miner, and the first ventilation box 1 is placed inside the roadway. When the continuous miner is working inside the roadway, the second ventilation box 2 is aligned with the first ventilation box 1. When the first ventilation box 1 is aligned with the second ventilation box 2, the two are assembled and sealed through the sealing component, so that the interiors of the first ventilation box 1 and the second ventilation box 2 are communicated. At this time, the first fan 4 and the pressurizing component are started simultaneously. After the first fan 4 is started, it drives the air flow to circulate along the trajectory of the air inlet end 101, the filter element 3 and the first exhaust end 102, so that the air flow drives the dust to enter the interior of the first ventilation box 1, and the filter component inside the first ventilation box 1 filters the dust. The pressurizing component can be started simultaneously to increase the air flow velocity flowing through the first ventilation box 1, thereby enhancing the filtering effect on the air flow, which is beneficial to avoiding excessive dust in the air from having an adverse impact on the staff and equipment;

[0171] When the continuous miner is transferred to another roadway, the tunneling inside this roadway stops. At this time, the amount of dust in the roadway decreases. At this time, the first ventilation box 1 and the second ventilation box 2 are separated. The main ventilation system is transferred to another roadway along with the continuous miner, while the auxiliary ventilation system is always arranged inside this roadway. At this time, the air flow driving effect is maintained inside the auxiliary ventilation system through the first fan 4, so that the auxiliary ventilation system always maintains the filtering effect. At the same time, the filter component stores the filtered dust, so that the stored dust is discharged when assembled with the second ventilation box 2. Thus, there is no need to transfer the ventilation device inside the roadway. When the continuous miner is working, the ventilation effect can be increased, and when the continuous miner is transferred, the ventilation can be maintained through the remaining auxiliary ventilation system, which is beneficial to reducing the dust in the roadway and providing a good working environment for the staff and equipment inside the roadway.

[0172] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An efficient construction process for a one-machine, two-lane excavation working face, characterized in that: The following steps are involved: Step 1: Cut coal in one side of the tunnel with a continuous coal miner, ventilate the working face with a ventilation device, move forward a certain distance and then exit the working face and separate the ventilation device, leaving the auxiliary ventilation system at the working face for continuous ventilation. During the ventilation process, perform roof safety inspection and temporary support; Step 2: Support the tunnel from outside to inside, and the continuous coal mining machine drives the main ventilation system of the ventilation device to synchronously adjust to the tunnel on the other side for excavation; Step 3: Assemble the main ventilation system and the auxiliary ventilation system inside the tunnel on the other side to form a complete ventilation device, and the continuous mining machine cuts coal and ventilates the working face through the ventilation device at the same time; Step 4: When the continuous coal mining machine completes a cycle of excavation, adjust the machine, retreat the continuous coal mining machine to the back lane, and use a loader to clean up the excavated floating coal.

2. The high-efficiency construction process for a one-machine, two-lane excavation working face according to claim 1 is characterized in that: The ventilation device comprises: The secondary ventilation system is matched with the primary ventilation system to form a complete ventilation device; A sealing assembly is installed between the main ventilation system and the auxiliary ventilation system to seal the two. The secondary ventilation system comprises: A first ventilation box (1), the first ventilation box (1) comprising an air intake end (101) and a first exhaust end (102); A filter assembly installed inside the first ventilation box (1) and used for filtering the airflow passing through the first ventilation box (1) to clean up dust; a first fan (4), fixed to the interior of the first ventilation box (1) via a first isolation plate (401), and used for driving airflow through the filter assembly; The main ventilation system comprises: A second ventilation box (2), the second ventilation box (2) comprising a second exhaust end (201); a pressurizing component installed inside the second ventilation box (2) and used for pressurizing and ventilating the inside of the first ventilation box (1) after the main ventilation system is connected to the auxiliary ventilation system, and for cleaning the filter component during the pressurizing process; A conveying component is installed inside the second ventilation box (2) and is used to convey the dust cleaned by the filter component.

3. The high-efficiency construction process for a one-machine, two-lane excavation working face according to claim 2 is characterized in that: The sealing assembly comprises: A sealing strip fixed to the edges of the first ventilation box (1) and the second ventilation box (2) on opposite sides; Two clamping cavities (703) are symmetrically arranged on the side wall of the first ventilation box (1); Two first screw rods (701) are respectively fixed inside the two clamping cavities (703); Two second screw rods (702) are symmetrically fixed on the side wall of the second ventilation box (2), and the two second screw rods (702) are respectively aligned with the two first screw rods (701); Two first gears (704) are respectively threadedly sleeved on the outer rings of the two first screw rods (701), and the first gears (704) are threadably matched with the second screw rods (702); Two second gears (706) are rotatably mounted inside the two clamping cavities (703), and the two second gears (706) are respectively meshed with the two first gears (704); The two first motors (707) are respectively installed inside the two second ventilation boxes (2), and the two first motors (707) respectively drive the two second gears (706) to rotate.

4. The high-efficiency construction process for a one-machine, two-lane excavation working face according to claim 3 is characterized in that: The sealing assembly further comprises: A plurality of first magnets (6), four of the first magnets (6) form a group, two of the first magnets (6) form a small group, two small groups of the first magnets (6) in the same large group are respectively fixed on opposite sides of the first ventilation box (1) and the second ventilation box (2), and the first magnets (6) in the two small groups in the same large group have opposite magnetic poles, and the first magnets (6) in the same small group have opposite magnetic poles; Two pressure sensors (705) are respectively fixed to the ends of the two first screw rods (701).

5. The high-efficiency construction process for a one-machine, two-lane excavation working face according to claim 2 is characterized in that: The filter assembly comprises: A filter element (3) fixedly installed inside the first ventilation box (1); a partition plate fixed inside the first ventilation box (1) to divide the inside of the first ventilation box (1) into a first filter space (301) and a second filter space (302), wherein airflow passing through the first filter space (301) and the second filter space (302) both passes through the filter core (3); One end of the first filter space (301) and the second filter space (302) facing the second ventilation box (2) both penetrates the side wall of the first ventilation box (1) to form an opening; Two second pushing frames (9) are respectively slidably inserted into the first filtering space (301) and the second filtering space (302), and the ends of the two second pushing frames (9) are sealed and plugged into the openings; A switching component is installed inside the first ventilation box (1) and is used to switch the ventilation status of the first filter space (301) and the second filter space (302).

6. The high-efficiency construction process for a one-machine, two-lane excavation working face according to claim 5 is characterized in that: The booster assembly comprises: A second fan (10) is fixed inside the second ventilation box (2) via a second isolation plate (1001); A filter frame (1002) is fixed on the side wall of the second isolation plate (1001) and covers the second fan (10); Two first screw rods (901) are respectively threadedly connected to the two second pushing frames (9) and are rotatably connected to the inner wall of the first ventilation box (1); Two second screw rods (902) are both rotatably mounted inside the second ventilation box (2) and plug-fitted with the first screw rod (901); the second screw rod (902) is threadably fitted with the second pushing frame (9); The two second motors (903) are both fixed on the side walls of the second ventilation box (2), and drive the two second screw rods (902) to rotate via output shafts respectively.

7. The high-efficiency construction process for a one-machine, two-lane excavation working face according to claim 6 is characterized in that: The filter assembly also includes: Two moving frames (12) are respectively fixed on the inner walls of the two second pushing frames (9); Two groups of cleaning brushes (1201), a plurality of the cleaning brushes (1201) forming one group, the cleaning brushes (1201) in the same group being rotatably mounted in a linear array inside the two movable frames (12), the cleaning brushes (1201) being used to clean the filter element (3); A plurality of third gears (1202) are coaxially fixed to the top of each of the cleaning brushes (1201) and are rotatably mounted inside the two moving frames (12); Two fourth gears (1203) are rotatably mounted inside the two second pushing frames (9), and the two fourth gears (1203) are respectively meshed with the adjacent third gears (1202); The two racks (1204) are respectively fixed to the first filtering space (301) and the second filtering space (302), and the two racks (1204) are respectively meshed with the two fourth gears (1203).

8. The high-efficiency construction process for a one-machine, two-lane excavation working face according to claim 7 is characterized in that: The filter assembly also includes: A mounting frame (1302) is fixed inside the first ventilation box (1) and is located between the filter element (3) and the first fan (4); A wind wheel (13) rotatably mounted on a side wall of the mounting frame (1302); A first bevel gear (1301) is coaxially fixed on the rotating shaft of the wind wheel (13); A vibration roller (1303) is rotatably mounted on the mounting frame (1302); The second bevel gear (1304) is coaxially fixed on the rotating shaft of the vibration roller (1303), and the second bevel gear (1304) is meshed with the first bevel gear (1301).

9. The high-efficiency construction process for a one-machine, two-lane excavation working face according to claim 5 is characterized in that: The switching component comprises: Two first grid plates (501) are respectively fixed to one end of the first filter space (301) and the second filter space (302) facing away from the filter core (3); An installation box (504) installed inside the first ventilation box (1); Two cylinders (505) are symmetrically fixed inside the installation box (504); Two first pushing frames (503) are slidably mounted inside the first ventilation box (1), and the two cylinders (505) respectively drive the two first pushing frames (503) to move; The two second grid plates (502) are respectively fixed to the ends of the two first pushing frames (503), and the first pushing frames (503) form a seal when squeezing the first grid plates (501).

10. The high-efficiency construction process for a one-machine, two-lane excavation working face according to claim 2 is characterized in that: The conveying assembly comprises: A conveyor belt (8) installed inside the second ventilation box (2); An inclined surface (801) is fixed on the inner wall of the second ventilation box (2) and is located above the conveyor belt (8) to form a guide; A hinged cover (11) is hingedly mounted on the end of the feed opening of the second ventilation box (2), and a second magnet (1102) is fixed on the top of the hinged cover (11); The electromagnet (1101) is fixedly mounted on the side wall of the second ventilation box (2) via a mounting frame (1103).

Images