Tunneling device and control method for tunneling device

Abstract

The invention provides a tunneling device and a control method for the tunneling device. The tunneling device comprises a body; the dust removal system comprises a dust concentration monitoring assembly and a dust collection assembly, the dust concentration monitoring assembly comprises a first concentration sensor and a second concentration sensor, the first concentration sensor is arranged at the position, close to the first cutting cylinder, of the first rocker arm, and the second concentration sensor is arranged at the position, close to the second cutting cylinder, of the second rocker arm; the dust concentration monitoring assembly can detect the dust concentration in the environment; the dust collection assembly comprises a first dust collection part and a second dust collection part, the first dust collection part is arranged on the first rocker arm and is close to the first cutting cylinder, the second dust collection part is arranged on the second rocker arm and is close to the second cutting cylinder, and the dust collection assembly sucks dust in the environment according to data detected by the dust concentration monitoring assembly. By means of the technical scheme, the problem that in the prior art, the effect of blocking diffusion of dust-containing airflow through a water mist dust falling method is poor can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine dust reduction, and in particular to a tunneling device and a control method for the tunneling device. Background Art

[0002] With the development of automation of coal mining equipment, large-scale fully mechanized mining faces have been put into actual production in large quantities, which has greatly improved the integration and intelligence of the mining process, and the dust pollution has become increasingly serious. The fully mechanized mining face is the place where the dust hazard in coal mines is the most serious, and its dust production accounts for about 60% of the total dust production in the mine. The dust in the mining space will not only cause coal dust explosions, but also have serious health effects on workers who work underground for a long time, such as easily causing workers to suffer from silicosis, pneumoconiosis and other diseases. The dust in the fully mechanized mining face mainly comes from the coal mining machine cutting coal, hydraulic support movement and other operations, especially the large amount of dust generated by the drum of the coal mining machine after cutting the coal body, and its content is even as high as 70% to 80% of the total dust production of the fully mechanized mining face.

[0003] In response to this phenomenon, the existing control methods mainly use spray dust reduction methods, such as setting dust reduction sprays facing the coal wall at the coal cutting drum and the body of the coal mining machine. The spray can accelerate the settling of dust and achieve a certain dust reduction effect, but the blocking effect on dust-laden airflow is poor, and dust will still spread to pedestrian areas. The large amount of sprayed water mist will also cause the working environment of the fully mechanized mining face to deteriorate, which is not conducive to the observation and operation of operators. Summary of the invention

[0004] The present invention provides a tunneling device and a control method for the tunneling device, so as to solve the problem that the water mist dust reduction method in the prior art has a poor effect in blocking the diffusion of dust-laden airflow.

[0005] According to one aspect of the present invention, there is provided a tunneling device, which comprises: a main body, comprising a first cutting barrel, a fuselage and a second cutting barrel arranged in sequence along a working direction, the first cutting barrel being movably connected to the fuselage via a first rocker arm, and the second cutting barrel being movably connected to the fuselage via a second rocker arm; a dust removal system, comprising a dust concentration monitoring component and a dust suction component, the dust concentration monitoring component comprising a first concentration sensor and a second concentration sensor, the first concentration sensor being arranged at a position of the first rocker arm close to the first cutting barrel, and the second concentration sensor being arranged at a position of the second rocker arm close to the second cutting barrel, and the dust concentration monitoring component being capable of detecting dust concentration in the environment; the dust suction component comprising a first dust suction piece and a second dust suction piece, the first dust suction piece being arranged on the first rocker arm and close to the first cutting barrel, the second dust suction piece being arranged on the second rocker arm and close to the second cutting barrel, and the dust suction component sucks dust in the environment according to data detected by the dust concentration monitoring component.

[0006] Furthermore, the dust removal system also includes a dust reduction component, which is arranged on the fuselage. The dust reduction component includes multiple nozzles, and the multiple nozzles are arranged on the fuselage at intervals along the working direction. The dust reduction component can spray water mist into the environment to absorb dust in the environment.

[0007] Furthermore, the dust removal system also includes a controller, which is signal-connected to the dust concentration monitoring component, the dust collection component and the dust reduction component respectively. The controller can obtain data detected by the dust concentration monitoring component and control the operation of the dust collection component and the dust reduction component according to the data detected by the dust concentration monitoring component.

[0008] Furthermore, the dust concentration monitoring component also includes a third concentration sensor and a fourth concentration sensor, both of which are arranged at intervals downstream of the body along the airflow direction, and both of which are electrically connected to the controller.

[0009] According to another aspect of the present invention, a dust removal method for a tunneling device is provided. The dust removal method is applied to the above-mentioned tunneling device, and the dust removal method includes the following steps: obtaining the air flow direction in the tunnel and the working direction of the tunneling device; obtaining the dust concentration at the first cutting barrel on the tunneling device and the dust concentration at the second cutting barrel on the tunneling device through the dust concentration monitoring component of the tunneling device; adjusting the working power of the first dust suction member of the tunneling device and the second dust suction member of the tunneling device according to the air flow direction, the working direction and the dust concentration of the cutting barrel.

[0010] Furthermore, according to the air flow direction, the working direction and the dust concentration in the cutting barrel, the working power of the first dust suction component and the second dust suction component of the tunneling device is adjusted, specifically including: judging whether the air flow direction is the same as the working direction; if the air flow direction is the same as the working direction, the tunneling device is in a downwind coal cutting state; if the air flow direction is opposite to the working direction, the tunneling device is in a headwind coal cutting state; according to whether the tunneling device is in a downwind coal cutting state or a headwind coal cutting state and the dust concentration in the cutting barrel, the working power of the first dust suction component and the second dust suction component is adjusted.

[0011] Furthermore, when the tunneling device is in the state of cutting coal with the wind, along the working direction of the tunneling device, the second cutting barrel is located in front of the first cutting barrel, thereby increasing the working power of the second dust collecting component; when the tunneling device is in the state of cutting coal against the wind, along the working direction of the tunneling device, the first cutting barrel is located in front of the second cutting barrel, thereby increasing the working power of the first dust collecting component.

[0012] Furthermore, the working power of the first dust suction component and the second dust suction component of the tunneling device are adjusted according to whether the tunneling device is in a downwind coal cutting state or an upwind coal cutting state and the dust concentration in the cutting barrel. It also includes: adjusting the number of open nozzles of the dust reduction component of the tunneling device according to the air flow direction and working direction and the dust concentration in the cutting barrel.

[0013] Furthermore, the number of nozzles opened in the dust reduction component of the tunneling device is adjusted according to the air flow direction, the working direction and the dust concentration in the cutting barrel, and also includes: obtaining the sensor dust concentration downstream of the main body of the tunneling device along the air flow direction through the third concentration sensor and the fourth concentration sensor of the dust concentration monitoring component; and adjusting the number of nozzles opened according to the air flow direction, the working direction, the dust concentration in the cutting barrel and the dust concentration of the sensors.

[0014] Furthermore, the number of nozzles opened is adjusted according to the air flow direction, working direction, dust concentration in the cutting barrel and dust concentration in the sensor, specifically including: when the tunneling device is in a downwind coal cutting state, if the dust concentration in the sensor remains unchanged, some nozzles are opened; if the dust concentration in the sensor increases, the number of nozzles opened is increased; when the tunneling device is in an upwind coal cutting state, if the dust concentration in the sensor remains unchanged, the nozzle is not opened; if the dust concentration in the sensor increases, some nozzles are opened.

[0015] By applying the technical solution of the present invention, a first concentration sensor and a first dust collecting member are arranged near the first cutting barrel, a second concentration sensor and a second dust collecting member are arranged near the second cutting barrel, the first dust collecting member is arranged on the first rocker arm, and the second dust collecting member is arranged on the second rocker arm, so that the dust collecting member can move with the rocker arm, thereby ensuring that the dust collecting member and the concentration sensor can always monitor the concentration of dust near the cutting barrel and perform dust collection operations. The dust collecting component can suck the dust around the cutting barrel according to the data detected by the dust concentration monitoring component, and the dust collecting component can generate a suction airflow, thereby being able to suck the dust in the nearby range. Compared with water mist which can only adsorb the dust to make it settle, the present application uses the above-mentioned arrangement, so that most of the dust will be sucked into the dust collecting member, which can effectively prevent most of the dust generated near the cutting barrel from spreading laterally to the pedestrian area, and the dust removal effect is good. At the same time, the water content in the working environment will not be greatly increased, thereby ensuring the comfort of the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application 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 drawings:

[0017] Figure 1 A schematic diagram of the structure of a tunneling device provided in an embodiment of the present invention is shown;

[0018] Figure 2 A partial top view of a tunneling device provided according to an embodiment of the present invention is shown;

[0019] Figure 3 It shows a schematic structural diagram of a first air duct provided according to an embodiment of the present invention;

[0020] Figure 4 An exploded view of a first air cylinder provided according to an embodiment of the present invention is shown;

[0021] Figure 5 A schematic diagram showing the operation of the tunneling device provided by an embodiment of the present invention when cutting coal in the downwind direction is shown;

[0022] Figure 6 A schematic diagram showing the operation of the tunneling device provided in accordance with an embodiment of the present invention when cutting coal against the wind is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Ontology;

[0025] 11. First cutting barrel;

[0026] 12. Fuselage;

[0027] 121, first rocker arm; 122, second rocker arm;

[0028] 13. Second cutting barrel;

[0029] 21. A first concentration sensor; 22. A second concentration sensor;

[0030] 23. A third concentration sensor; 24. A fourth concentration sensor;

[0031] 31. A first dust collecting member;

[0032] 311. a first air duct; 312. a first fan;

[0033] 313. First air inlet plate; 3131. First through hole;

[0034] 314, first exhaust hood;

[0035] 315, a first filter screen; 316, a first dehydration filter element;

[0036] 317, first mounting arm;

[0037] 32. A second dust collecting member;

[0038] 321, second mounting arm;

[0039] 40. Dust reduction components;

[0040] 41. nozzle; 42. support frame;

[0041] 01. Coal wall; 02. Pedestrian area. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figures 1 to 4 As shown, an embodiment of the present invention provides a tunneling device, which includes: a main body 10, including a first cutting barrel 11, a body 12, and a second cutting barrel 13 arranged in sequence along a working direction, the first cutting barrel 11 is movably connected to the body 12 through a first rocker arm 121, and the second cutting barrel 13 is movably connected to the body 12 through a second rocker arm 122; a dust removal system, including a dust concentration monitoring component and a dust suction component, the dust concentration monitoring component includes a first concentration sensor 21 and a second concentration sensor 22, the first concentration sensor 21 is arranged at the first rocker arm 121, and the dust collection component includes a dust concentration sensor 21 and a second concentration sensor 22. The arm 121 is located near the first cutting barrel 11, and the second concentration sensor 22 is arranged at the position of the second rocker arm 122 near the second cutting barrel 13. The dust concentration monitoring component can detect the dust concentration in the environment; the dust suction component includes a first dust suction member 31 and a second dust suction member 32. The first dust suction member 31 is arranged on the first rocker arm 121 and is arranged near the first cutting barrel 11, and the second dust suction member 32 is arranged on the second rocker arm 122 and is arranged near the second cutting barrel 13. The dust suction component sucks the dust in the environment according to the data detected by the dust concentration monitoring component. By real-time monitoring of the dust concentration near the cutting barrel, the working state of the dust suction member can be accurately controlled, the diffusion of coal dust can be effectively prevented, and the working environment of the excavation working face can be improved. It is particularly suitable for excavation operations in underground projects such as coal mines and mines. After implementing this design, the dust concentration of the coal mine excavation working face is greatly reduced, which significantly improves the working environment of miners, improves the safety level of mining operations and the health protection of miners.

[0044] By applying the technical solution of the present invention, a first concentration sensor 21 and a first dust collecting member 31 are arranged near the first cutting barrel 11, and a second concentration sensor 22 and a second dust collecting member 32 are arranged near the second cutting barrel. The first dust collecting member 31 is arranged on the first rocker arm 121, and the second dust collecting member 32 is arranged on the second rocker arm 122. In this way, the dust collecting member can move with the rocker arm, thereby ensuring that the dust collecting assembly and the concentration sensor can always monitor the concentration of dust near the cutting barrel and perform dust collection operations. The dust collecting assembly can suck the dust near the cutting barrel according to the data detected by the dust concentration monitoring assembly. The dust collecting assembly can generate a suction airflow, thereby sucking the dust in the nearby range. Compared with water mist which can only adsorb the dust to make it settle, the present application uses the above-mentioned arrangement, and most of the dust will be sucked into the dust collecting assembly, which can effectively prevent most of the dust generated near the cutting barrel from spreading laterally to the pedestrian area 02, and the dust removal effect is good. At the same time, the water content in the working environment will not be greatly increased, ensuring the comfort of the working environment.

[0045] The dust removal system further includes a dust reduction component 40, which is arranged on the fuselage 12. The dust reduction component 40 includes a plurality of nozzles 41, which are arranged on the fuselage 12 at intervals along the working direction. The dust reduction component 40 can spray water mist into the environment to absorb dust in the environment. The setting of the dust reduction component 40 can not only directly suck dust through the dust suction component, but also use water mist to absorb dust to prevent dust from being suspended in the air for a long time. The use of the dust reduction component 40 in conjunction with the dust suction component can further reduce the impact of dust on the working environment, improve the dust removal effect of the dust removal system, and at the same time will not cause excessive impact on the humidity in the working environment.

[0046] like Figure 2 As shown, a support frame 42 is also provided on the fuselage 12 , and the nozzle 41 is installed on the support frame 42 .

[0047] Furthermore, the dust reduction component also includes a water tank and a water pump, one end of the water pump is connected to the water tank, and the other end of the water pump is connected to the nozzle. The water pump can pump water in the water tank to the nozzle, and the water tank and the water pump are both arranged inside the fuselage 12.

[0048] Specifically, the dust removal system also includes a controller, which is respectively connected to the dust concentration monitoring component, the dust collection component and the dust reduction component 40 by signal, and the controller can obtain the data detected by the dust concentration monitoring component and control the dust collection component and the dust reduction component 40 to work according to the data detected by the dust concentration monitoring component. Through the above settings, the controller can realize the automation of dust collection and dust reduction of the dust removal system, greatly reducing the need for manual monitoring and adjustment of the dust collection component and the dust reduction component 40, and improving the control accuracy and work efficiency of the dust removal system.

[0049] like Figure 3 and Figure 4 As shown, the first dust collecting member 31 includes a first air cylinder 311 and a first fan 312. The extension direction of the first air cylinder 311 is perpendicular to the coal wall 01. The first air inlet and the first air outlet are respectively provided at both ends of the first air cylinder 311. The first air inlet is provided close to the coal wall 01. The first fan 312 is located in the first air cylinder 311 and is provided close to the first air inlet. The second dust collecting member 32 includes a second air cylinder and a second fan. The extension direction of the second air cylinder is perpendicular to the coal wall 01. The second air inlet is provided close to the coal wall 01. The second fan is located in the second air cylinder and is provided close to the second air inlet. Through the above arrangement, the extension direction of the air cylinder is perpendicular to the coal wall 01, which can effectively capture dust near the coal wall 01 and near the cutting barrel, thereby improving the dust collection efficiency of the dust collecting assembly.

[0050] The first air cylinder 311 is connected to the first rocker arm 121 via the first mounting arm 317 , and the second air cylinder is connected to the second rocker arm 122 via the second mounting arm 321 .

[0051] like Figure 3 and Figure 4 As shown, the first dust collecting member 31 also includes a first air inlet plate 313 and a first air exhaust hood 314 which are arranged in sequence, the first air inlet plate 313 covers a first air inlet, a plurality of first through holes 3131 are arranged at annular intervals on the end surface of the first air inlet plate 313 away from the coal wall 01, the first air exhaust plate covers a first air outlet, there is a gap between the first air exhaust plate and the first air cylinder 311, the first air exhaust hood 314 has a first opening, the first opening is arranged toward the coal wall 01, and the opening is connected to the first air outlet. The second dust collecting member 32 also includes a second air inlet plate and a second air exhaust hood which are arranged in sequence, the second air inlet plate covers a second air inlet, a plurality of second through holes are arranged at annular intervals on the end surface of the second air inlet plate away from the coal wall 01, the second air exhaust plate covers a second air outlet, there is a gap between the second air exhaust plate and the second air cylinder, the second air exhaust hood has a second opening, the opening is arranged toward the coal wall 01, and the second opening is connected to the second air outlet. By setting the exhaust hood, the air outlet direction of the dust collection component can be effectively controlled, reducing the airflow blowing toward the pedestrian area 02, thereby preventing the dust in the environment from being driven by the airflow at the air outlet to flow to the pedestrian area 02 again.

[0052] The first dust collecting part 31 further includes a first filter 315 and a first dehydration filter 316 which are arranged in sequence, the first filter 315 is arranged close to the first fan 312, and the first dehydration filter 316 is arranged close to the first exhaust hood 314. The second dust collecting part 32 further includes a second filter and a second dehydration filter which are arranged in sequence, the second filter is arranged close to the second fan, and the second dehydration filter is arranged close to the second exhaust hood. Through the double filtration of the filter and the dehydration filter, the dust and moisture in the fluid can be effectively removed, and the cleanliness of the fluid discharged from the air outlet can be ensured. At the same time, the dust collecting component can be prevented from being blocked and corroded, and the service life of the dust collecting system can be improved.

[0053] like Figure 1 As shown, the dust concentration monitoring component also includes a third concentration sensor 23 and a fourth concentration sensor 24, which are both arranged at intervals downstream of the body 10 along the airflow direction, and the third concentration sensor 23 and the fourth concentration sensor 24 are both electrically connected to the controller. Through the arrangement of the third concentration sensor 23 and the fourth concentration sensor 24, the controller can grasp the distribution of the dust concentration downstream of the body 10 along the airflow direction in real time. If the dust concentration detected by the third concentration sensor 23 or the fourth concentration sensor 24 increases, it indicates that the operation effect of the dust removal system is unstable or substandard. In this way, the dust removal effect of the dust removal system can be detected at multiple distances according to the detection data of the third concentration sensor 23 and the fourth concentration sensor 24 to ensure the dust removal effect of the dust removal system.

[0054] Specifically, the third concentration sensor 23 is arranged at 10m-15m downstream of the main body 10 at intervals along the airflow direction, and the fourth concentration sensor 24 is arranged at 15m-20m downstream of the main body 10 at intervals along the airflow direction. If the third concentration sensor 23 and the fourth concentration sensor 24 are too close to the main body 10, the detected dust concentration is relatively close to the detection data of the first concentration sensor 21 and the second concentration sensor 22; the diffusion distance of dust is limited. If the third concentration sensor 23 and the fourth concentration sensor 24 are too far away from the main body 10, the third concentration sensor 23 and the fourth concentration sensor 24 cannot detect the dust concentration. In this embodiment, the third concentration sensor 23 is arranged at 15m downstream of the main body 10 at intervals along the airflow direction, and the fourth concentration sensor 24 is arranged at 20m downstream of the main body 10 at intervals along the airflow direction. With this arrangement, the dust concentration monitoring component can not only detect the concentration distribution of dust after it diffuses a certain distance with the wind, but also avoid invalid detection data.

[0055] Furthermore, the first concentration sensor 21, the second concentration sensor 22, the third concentration sensor 23 and the fourth concentration sensor 24 are all respirable dust concentration sensors. The arrangement height of the third concentration sensor 23 and the fourth concentration sensor 24 is the breathing zone height, which can be set to 1m to 2m away from the tunnel floor. In the present application, it is 1.5m away from the tunnel floor, which can better detect the dust concentration at the breathing height of most operators.

[0056] However, when the coal mining machine adopts a two-way coal cutting working mode, different working directions result in obvious differences in the dust content and dust distribution patterns generated by the coal mining machine and the drum. When cutting coal with the wind, since the front drum is on the leeward side, the dust generated by the rear drum drifts to the front drum with the working airflow. Combined with the dust generated by the front drum itself, a large amount of dust gathers at the front drum. When cutting coal against the wind, the front drum is facing the working airflow. Under the combined action of the working airflow and the rotating airflow generated by the front drum's own rotation, the dust quickly gathers at the front drum. Driven by the working airflow, the dust at the rear drum also gathers. In fact, whether dust gathers on the front or rear drum, the dust-laden airflow will not be able to flow along the coal wall, but will instead spread horizontally to the pedestrian area, causing dust pollution.

[0057] like Figure 5 and Figure 6 As shown, according to another embodiment of the present invention, a dust removal method for a tunneling device is provided. The dust removal method is applied to the tunneling device provided in the above embodiment, and the dust removal method includes the following steps: obtaining the air flow direction in the tunnel and the working direction of the tunneling device; obtaining the dust concentration at the first cutting barrel 11 on the tunneling device and the dust concentration at the second cutting barrel 13 on the tunneling device through the dust concentration monitoring component of the tunneling device; adjusting the working power of the first dust suction member 31 of the tunneling device and the second dust suction member 32 of the tunneling device according to the air flow direction, the working direction and the dust concentration of the cutting barrel. In this way, the working state of the dust suction component can be dynamically adjusted according to the real-time change of the dust concentration of the cutting barrel, ensuring that dust can be effectively controlled under different working conditions, improving the flexibility and efficiency of the dust removal system control in the tunneling device, effectively preventing the spread of dust, ensuring the health of the operators, and thus improving the safety and efficiency of the operation.

[0058] Among them, the direction pointed by a is the air flow direction, and the direction pointed by b is the working direction of the excavation device.

[0059] According to the air flow direction, working direction and dust concentration of the cutting barrel, the working power of the first dust suction member 31 and the second dust suction member 32 of the tunneling device is adjusted. This step specifically includes: judging whether the air flow direction is the same as the working direction; if the air flow direction is the same as the working direction, the tunneling device is in a downwind coal cutting state; if the air flow direction is opposite to the working direction, the tunneling device is in a headwind coal cutting state; according to whether the tunneling device is in a downwind coal cutting state or a headwind coal cutting state and the dust concentration of the cutting barrel, the working power of the first dust suction member 31 and the second dust suction member 32 is adjusted. Because when the tunneling device is cutting coal with the wind or against the wind, different air flow directions drive the dust to flow in different directions, and thus have different effects on the dust concentration at the cutting barrels on both sides of the fuselage 12, the present application can take into account the differences in dust distribution when the tunneling device is in different states through the above method, so as to adjust the working power of the dust suction component accordingly, and thus provide an effective and targeted dust removal solution.

[0060] When the tunneling device is in the state of cutting coal with the wind, along the working direction of the tunneling device, the second cutting drum 13 is located in front of the first cutting drum 11. At this time, the second cutting drum 13 is the front roller, cutting the top of the coal wall 01, and the first cutting drum 11 cuts the bottom of the coal wall 01. The potential energy of the coal blocks at the top of the coal wall 01 is higher than that of the coal blocks at the bottom of the coal wall 01. When falling, the kinetic energy generated by the coal blocks at the top of the coal wall 01 will be higher than the kinetic energy generated by the coal blocks at the bottom of the coal wall 01. Therefore, the crushed dust generated by the coal blocks falling at the second cutting drum 13 will be greater than the crushed dust generated by the coal blocks falling at the first cutting drum 11. There is more broken dust, that is, the dust concentration at the second cutting cylinder 13 will be greater than the dust concentration at the first cutting cylinder 11. At this time, the working power of the second dust collecting member 32 should be increased; when the tunneling device is in the state of cutting coal against the wind, along the working direction of the tunneling device, the first cutting cylinder 11 is located in front of the second cutting cylinder 13. At this time, the first cutting cylinder 11 is the front drum, and the second cutting cylinder 13 is the rear drum. The first cutting cylinder 11 cuts the coal on the top of the coal wall 01. At this time, the dust concentration at the first cutting cylinder 11 is greater than the wind dust concentration at the second cutting cylinder 13. The working power of the first dust collecting member 31 is increased. This method of dynamically adjusting the working power of the dust collecting component can ensure that dust can be effectively controlled in any working state, improving the safety and efficiency of the operation. Moreover, in an environment where the wind direction changes frequently, it can quickly sense and adjust, which greatly prevents dust accumulation at the cutting cylinder, effectively avoids the dust-containing airflow from spreading horizontally to the pedestrian area 02, and effectively protects the health of the staff.

[0061] According to whether the tunneling device is in a downwind coal cutting state or an upwind coal cutting state and the dust concentration of the cutting barrel, the working power of the first dust suction member 31 and the second dust suction member 32 of the tunneling device is adjusted, and the number of nozzles 41 of the dust reduction component 40 of the tunneling device is adjusted according to the air flow direction and the working direction and the dust concentration of the cutting barrel. By dynamically adjusting the number of nozzles 41, the consumption of water resources can be reduced while ensuring the dust removal effect, thereby reducing the operating cost.

[0062] According to the air flow direction, working direction and dust concentration of the cutting barrel, the number of nozzles 41 of the dust reduction component 40 of the tunneling device is adjusted, and it also includes: obtaining the sensor dust concentration downstream of the main body 10 of the tunneling device along the air flow direction through the third concentration sensor 23 and the fourth concentration sensor 24 of the dust concentration monitoring component. According to the air flow direction, working direction, dust concentration of the cutting barrel and sensor dust concentration, the number of nozzles 41 is adjusted. This dust reduction method based on multi-point dust concentration monitoring can control dust reduction more comprehensively and accurately. Through this multi-point monitoring and real-time control dust reduction method, coal mines can more accurately control the dust concentration of the tunneling working face.

[0063] According to the air flow direction, working direction, dust concentration of the cutting barrel and dust concentration of the sensor, the number of nozzles 41 opened is adjusted, specifically including: when the tunneling device is in the state of cutting coal with the wind, if the dust concentration of the sensor remains unchanged, some nozzles 41 are opened to prevent the wind flow from bringing more dust to the second cutting barrel 13 to further increase the dust concentration at the second cutting barrel 13; if the dust concentration of the sensor increases, the number of nozzles 41 opened is increased to further increase the dust reduction strength and range. When the tunneling device is in the state of cutting coal against the wind, if the dust concentration of the sensor remains unchanged, at this time, the dust concentration at the second cutting barrel 13 is lower than the dust concentration at the first cutting barrel 11, the nozzle 41 is not opened, and the dust suction component can maintain the dust concentration at an appropriate concentration; if the dust concentration of the sensor increases, the dust suction component cannot maintain the dust concentration of the cutting barrel and the dust concentration of the sensor in a stable state, some nozzles 41 are opened to cooperate with the dust suction component to remove dust. The above-mentioned method for adjusting the number of nozzles 41 opened can flexibly adjust the working power of the dust reduction component 40 according to the actual dust concentration and wind direction changes, effectively reducing the waste of water resources and improving the dust reduction effect. While reducing dust, the humidity of the environment will not be greatly changed, ensuring the health and working comfort of the operators.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and device known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and device should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0066] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0067] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0068] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tunneling device, characterized in that: The excavation device comprises: The main body (10) comprises a first cutting barrel (11), a body (12) and a second cutting barrel (13) which are arranged in sequence along a working direction, wherein the first cutting barrel (11) is movably connected to the body (12) via a first rocker arm (121), and the second cutting barrel (13) is movably connected to the body (12) via a second rocker arm (122); A dust removal system, comprising a dust concentration monitoring component and a dust collection component, wherein the dust concentration monitoring component comprises a first concentration sensor (21) and a second concentration sensor (22), wherein the first concentration sensor (21) is arranged at a position of the first rocker arm (121) close to the first cutting barrel (11), and the second concentration sensor (22) is arranged at a position of the second rocker arm (122) close to the second cutting barrel (13), and the dust concentration monitoring component is capable of detecting dust concentration in an environment; The dust suction component comprises a first dust suction member (31) and a second dust suction member (32); the first dust suction member (31) is arranged on the first rocker arm (121) and is arranged close to the first cutting barrel (11); the second dust suction member (32) is arranged on the second rocker arm (122) and is arranged close to the second cutting barrel (13); the dust suction component sucks dust in the environment according to data detected by the dust concentration monitoring component.

2. The excavation device according to claim 1, characterized in that: The dust removal system further comprises a dust reduction component (40), wherein the dust reduction component (40) is arranged on the machine body (12), wherein the dust reduction component (40) comprises a plurality of nozzles (41), wherein the plurality of nozzles (41) are arranged on the machine body (12) at intervals along the working direction, and wherein the dust reduction component (40) is capable of spraying water mist into the environment to absorb dust in the environment.

3. The excavation device according to claim 2, characterized in that: The dust removal system also includes a controller, which is respectively connected to the dust concentration monitoring component, the dust collection component and the dust reduction component (40) by signals, and the controller is capable of obtaining data detected by the dust concentration monitoring component and controlling the operation of the dust collection component and the dust reduction component (40) according to the data detected by the dust concentration monitoring component.

4. The excavation device according to claim 3, characterized in that: The dust concentration monitoring component also includes a third concentration sensor (23) and a fourth concentration sensor (24), wherein the third concentration sensor (23) and the fourth concentration sensor (24) are both arranged at intervals downstream of the body (10) along the airflow direction, and the third concentration sensor (23) and the fourth concentration sensor (24) are both electrically connected to the controller.

5. A dust removal method for a tunneling device, characterized in that: The dust removal method is applied to the tunneling device according to any one of claims 1 to 4, and the dust removal method comprises the following steps: Obtaining the air flow direction in the tunnel and the working direction of the tunneling device; Obtaining the dust concentration at a first cutting barrel (11) on the tunneling device and the dust concentration at a second cutting barrel (13) on the tunneling device through a dust concentration monitoring component of the tunneling device; The working power of the first dust suction component (31) of the tunneling device and the second dust suction component (32) of the tunneling device are adjusted according to the air flow direction, the working direction and the dust concentration of the cutting barrel.

6. The dust removal method according to claim 5, characterized in that: According to the air flow direction, the working direction and the dust concentration of the cutting barrel, the working power of the first dust suction member (31) and the second dust suction member (32) of the excavation device is adjusted, specifically comprising: Determining whether the air flow direction is the same as the working direction; If the air flow direction is the same as the working direction, the tunneling device is in a downwind coal cutting state; If the air flow direction is opposite to the working direction, the tunneling device is in a state of cutting coal against the wind; The working power of the first dust suction member (31) and the second dust suction member (32) is adjusted according to whether the tunneling device is in the downwind coal cutting state or the headwind coal cutting state and the dust concentration of the cutting barrel.

7. The dust removal method according to claim 6, characterized in that: When the tunneling device is in the downwind coal cutting state, along the working direction of the tunneling device, the second cutting barrel (13) is located in front of the first cutting barrel (11), thereby increasing the working power of the second dust collecting member (32); When the tunneling device is in the upwind coal cutting state, along the working direction of the tunneling device, the first cutting barrel (11) is located in front of the second cutting barrel (13), thereby increasing the working power of the first dust collecting member (31).

8. The dust removal method according to claim 7, characterized in that: The tunneling device is the tunneling device according to claim 2, and the working power of the first dust suction member (31) and the second dust suction member (32) of the tunneling device are adjusted according to whether the tunneling device is in a downwind coal cutting state or an upwind coal cutting state and the dust concentration of the cutting barrel, and further comprising: The number of nozzles (41) of the dust reduction component (40) of the tunneling device that are opened is adjusted according to the air flow direction, the working direction and the dust concentration of the cutting barrel.

9. The dust removal method according to claim 8, characterized in that: The excavation device is the excavation device according to claim 4, and the number of nozzles (41) of the dust reduction component (40) of the excavation device that are opened is adjusted according to the air flow direction, the working direction and the dust concentration of the cutting barrel, and further comprises: Acquiring the sensor dust concentration downstream of the main body (10) of the tunneling device along the air flow direction through a third concentration sensor (23) and a fourth concentration sensor (24) of the dust concentration monitoring component; The number of nozzles (41) opened is adjusted according to the air flow direction, the working direction, the dust concentration of the cutting barrel and the dust concentration of the sensor.

10. The dust removal method according to claim 9, characterized in that: According to the air flow direction, the working direction, the dust concentration of the cutting barrel and the dust concentration of the sensor, the opening number of the nozzle (41) is adjusted, specifically including: When the tunneling device is in a downwind coal cutting state, if the dust concentration of the sensor remains unchanged, a part of the nozzles (41) are opened; if the dust concentration of the sensor increases, the number of opened nozzles (41) is increased; When the tunneling device is in a coal cutting state against the wind, if the dust concentration of the sensor remains unchanged, the nozzle (41) is not turned on; if the dust concentration of the sensor increases, part of the nozzle (41) is turned on.

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