Rail mobile type pressure wind guiding intelligent regulation and control device and method for fully-mechanized coal mining face

Abstract

The application provides a track mobile type air pressure guide intelligent regulation and control device and method for a fully-mechanized coal mining face, both ends of a steel wire rope are fixed to the top of a roadway through hangers, an air duct is slidably hung on the steel wire rope, the front end of the air duct is provided with an air duct walking control box for driving the air duct to move along the steel wire rope, the top of a C-shaped frame of the regulation and control device body is vertically sleeved on the steel wire rope and is in sliding fit with the steel wire rope, a walking mechanism for driving the C-shaped frame to move along the steel wire rope is arranged on the C-shaped frame, a wind shielding baffle is arranged in front of an air outlet of the air duct, one side end of the wind shielding baffle is hinged to a vertical section of the C-shaped frame, a baffle driving mechanism for driving the wind shielding baffle to overturn is arranged on the C-shaped frame, a plurality of dust sensors are further arranged on the C-shaped frame, the signal output ends of the dust sensors are connected with the signal receiving ends of a controller, and the controller is electrically connected with the air duct walking control box, the walking mechanism and the baffle driving mechanism. The application can effectively guarantee the safety of the construction of a coal mine roadway.

Description

Technical Field

[0001] This invention relates to the field of coal mine ventilation and dust suppression, and in particular to a track-moving intelligent control device and method for compressed air diversion in fully mechanized tunneling faces. Background Technology

[0002] The function of coal mine ventilation ducts is to ensure unobstructed ventilation within the mine. During coal mining, a large amount of fresh air is needed to maintain miners' breathing and safety. Simultaneously, the ventilation system effectively removes harmful gases generated in the mine, such as methane, carbon dioxide, and hydrogen sulfide, ensuring miners' safety. Through the operation of coal mine ventilation ducts, air circulation is maintained within the mine, reducing mine temperature, humidity, and dust concentration, providing a relatively stable working environment. In short, coal mine ventilation ducts play a crucial role in the coal mine ventilation system, significantly impacting ventilation, air pressure regulation, temperature reduction, and oxygen supply. Dust is generated during the cutting process at the face of the coal mine tunneling face. Although dust removal equipment is installed at the face of the face, if the ventilation duct outlet blows directly onto the face of the face for an extended period, dust fog can easily form, affecting tunneling operations. Moreover, as construction progresses, the dust removal effect of the equipment becomes limited, leading to an accumulation of dust at the face of the face. If the dust concentration exceeds the limit, it will seriously affect the health of the workers. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention aims to provide a track-moving intelligent control device and method for compressed air flow in tunneling face, so as to solve the problems of dust and fog formation caused by prolonged direct airflow at the front of the working face and the excessively high dust concentration at the front of the working face as construction progresses.

[0004] To achieve the above objectives, this invention proposes a track-moving intelligent control device for compressed air diversion in a fully mechanized tunneling face. The device includes a folded ventilation duct, a control unit body, and a steel wire rope arranged along the tunnel excavation direction. The front end of the steel wire rope is close to the tunnel face, and both ends are fixed to the tunnel ceiling via hangers, with a gap between the steel wire rope and the tunnel ceiling. The ventilation duct is slidably suspended on the steel wire rope along the tunnel excavation direction via several lifting rings, with the rear end of the ventilation duct fixed to the steel wire rope. A ventilation duct travel control box is located at the front end of the ventilation duct for driving its movement along the steel wire rope. The control unit body includes a C-frame and a control... The device includes a C-shaped frame and a windshield. Both the C-shaped frame and the windshield are vertically arranged. The top of the C-shaped frame is vertically fitted onto a steel wire rope and is in sliding engagement with the steel wire rope. The C-shaped frame is equipped with a traveling mechanism for driving it to move along the steel wire rope. The windshield is located in front of the air outlet of the air duct and inside the C-shaped frame. One end of the windshield is hinged to the vertical section of the C-shaped frame. The C-shaped frame is equipped with a baffle driving mechanism for driving the windshield to flip. The C-shaped frame is also equipped with several dust sensors. The signal output terminal of the dust sensor is connected to the signal receiving terminal of the controller. The controller is electrically connected to the air duct traveling control box, the traveling mechanism, and the baffle driving mechanism.

[0005] In the above scheme: the baffle driving mechanism includes a first motor, a vertical gear shaft and multiple horizontal levers. The horizontal levers are V-shaped and are spaced apart vertically. One end of each horizontal lever is hinged to the front end face of the windshield baffle, and the other end of each horizontal lever is fixedly sleeved on the vertical gear shaft through a gear disc. The lower end of the vertical gear shaft is coaxially fixedly sleeved with a first gear. A second gear meshes with the first gear, and the second gear meshes with the motor gear of the first motor.

[0006] In the above scheme: the C-shaped frame is composed of hollow square tubes. The first motor is fixed on the bottom horizontal section of the C-shaped frame. The motor gear of the first motor extends into the interior of the C-shaped frame. The first gear, the second gear, the vertical gear shaft and each gear disk are all located inside the C-shaped frame. The vertical gear shaft is rotatably engaged with the C-shaped frame. An arc-shaped hole is opened on the C-shaped frame corresponding to the gear disk for the horizontal lever to rotate.

[0007] In the above scheme: both the ventilation duct travel control box and the travel mechanism include a box body. The box body is provided with a through hole for the steel wire rope to pass through. The box body is provided with a second motor, a drive shaft, a roller, and a U-shaped sliding seat. The drive shaft moves through the U-shaped sliding seat from the side. The roller is coaxially fixed on the drive shaft and is limited to the left and right sides in the U-shaped sliding seat. The steel wire rope is passed between the U-shaped sliding seat and the roller, so that the roller and the steel wire rope are in frictional contact. The other end of the drive shaft is coaxially fixed with a driven gear. The motor gear of the second motor meshes with the driven gear.

[0008] In the above scheme: the motor gear on the walking mechanism meshes perpendicularly with the driven gear, and the housing volume of the walking mechanism is relatively small. This setting is beneficial for adjusting the installation position of the second motor on the walking mechanism and avoiding interference between the second motor and the wire rope.

[0009] In the above solution: the controller is embedded in the port of the horizontal section at the bottom of the C-shaped frame, which is easy to install, and some of the wiring harnesses connected to the controller can be set inside the C-shaped frame, which is convenient and safe for wiring.

[0010] In the above scheme: the dust sensors are distributed on the top horizontal section of the C-shaped frame, and the dust sensors are laser dust sensors.

[0011] This invention also proposes an intelligent control method for track-moving compressed air flow in a fully mechanized tunneling face, based on the aforementioned intelligent control device for track-moving compressed air flow in a fully mechanized tunneling face, comprising the following steps:

[0012] S1. During construction, the dust concentration at the tunnel face is monitored by a dust sensor and the monitoring data is fed back to the controller. When the dust concentration does not exceed the set value, the controller commands the baffle drive mechanism to drive the windshield to rotate horizontally to be perpendicular to the wire rope, so as to block the air inlet of the ventilation duct. At this time, the airflow ejected from the ventilation duct is blocked by the windshield and the airflow spreads to the surroundings along the plane of the windshield.

[0013] When the dust concentration exceeds the set value, the controller commands the baffle drive mechanism to drive the windshield to flip forward horizontally and open, so that the airflow is supplied to the front end of the roadway along the windshield, and the dust generated by the cutting at the front end of the tunneling face is blown to the surroundings, thereby reducing the dust concentration at the front end of the tunneling face; and during this process, the C-frame can be driven forward by the traveling mechanism, and the ventilation duct can be driven forward by the ventilation duct traveling control box, thereby adjusting the position of the C-frame and the ventilation duct on the wire rope, and thus adjusting the airflow intensity.

[0014] When the dust concentration drops below the set value, the controller commands the baffle drive mechanism to drive the windshield back to its original position; this cycle repeats until one tunneling operation is completed.

[0015] S2. After one tunneling operation is completed, a new section of wire rope is installed at the top of the newly tunneled roadway. The control device body is removed from the previous section of wire rope and installed on the next section of wire rope. The front end of the ventilation duct is removed from the previous section of wire rope. Then, the rear end of the ventilation duct is extended forward from its folded state, so that the front end of the ventilation duct, which is in the folded state, is installed on the next section of wire rope, so that the front end of the ventilation duct is close to the control device body. Finally, the two sections of wire rope are installed and fixed in place, and the next tunneling operation begins.

[0016] S3. Repeat this process until the entire tunnel excavation is completed.

[0017] In the above scheme: the length of one tunneling operation is 10-20m, the length of a section of wire rope is 10-15m, and the distance between the control device body and the front end of the ventilation duct is 1-1.5m.

[0018] The beneficial effects of this invention are as follows: When the dust concentration does not exceed the set value, the windshield can be flipped to be perpendicular to the wire rope, thus blocking the airflow in front of the ventilation duct's air outlet. At this time, the airflow emitted from the ventilation duct is blocked by the windshield, and the airflow diffuses in all directions along the plane of the windshield, preventing the formation of dust fog that could affect workers' construction. When the dust concentration exceeds the set value, the windshield can be flipped open, allowing airflow to be supplied to the front end of the roadway along the windshield, dispersing the dust generated by the cutting at the front end of the tunneling face, thereby reducing the dust concentration at the front end of the tunneling face and preventing excessive concentration from affecting workers' health. Furthermore, during this process, the C-frame can be driven forward by the traveling mechanism, and the ventilation duct can be driven forward by the ventilation duct traveling control box, thereby adjusting the position of the C-frame and ventilation duct on the wire rope, and further fine-tuning the airflow force to ensure the effective dispersion of accumulated dust. In summary, the structure of this invention is convenient to operate and effectively ensures the safety of coal mine roadway construction. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the control device body in this invention.

[0020] Figure 2 yes Figure 1 A schematic diagram of the windshield after it has been flipped forward.

[0021] Figure 3 This is a schematic diagram of the control device from another angle.

[0022] Figure 4 This is a schematic diagram of the baffle driving mechanism in this invention.

[0023] Figure 5 This is an assembly diagram of the horizontal lever and vertical gear shaft in the baffle drive mechanism.

[0024] Figure 6 This is a schematic diagram of the internal structure of the walking mechanism in this invention.

[0025] Figure 7 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 8 This is a schematic diagram of the internal structure of the ventilation duct travel control box in this invention. Detailed Implementation

[0027] like Figure 1 As shown in Figure 8, a track-moving intelligent control device for compressed air flow in a fully mechanized tunneling face mainly consists of an air duct 1, a control device body A, and a steel wire rope 2 set along the tunneling direction.

[0028] Ventilation duct 1 is a folded ventilation duct. The front end of the wire rope 2 is close to the tunnel face. The front and rear ends of the wire rope 2 are fixed to the top of the tunnel by hangers, and a gap is left between the wire rope 2 and the top of the tunnel. Ventilation duct 1 is slidably suspended on the wire rope 2 along the tunnel excavation direction by several lifting rings, and the rear end of ventilation duct 1 is fixed to the wire rope 2. The front end of ventilation duct 1 is equipped with a ventilation duct travel control box 3 for driving its movement along the wire rope 2.

[0029] The control device body A includes a C-shaped frame 4, a controller 5, and a windshield 6. Both the C-shaped frame 4 and the windshield 6 are vertically arranged. The top of the C-shaped frame 4 is vertically fitted onto the wire rope 2 and is in sliding engagement with the wire rope 2. A traveling mechanism 7 is provided on the C-shaped frame 4 to drive its movement along the wire rope 2. The windshield 6 is located in front of the air outlet of the air duct 1 and inside the C-shaped frame 4. One end of the windshield 6 is hinged to the vertical section of the C-shaped frame 4, and a baffle driving mechanism 8 is provided on the C-shaped frame 4 to drive the windshield 6 to rotate.

[0030] The C-frame 4 is also equipped with several dust sensors 9. The signal output terminal of the dust sensor 9 is connected to the signal receiving terminal of the controller 5. The controller 5 is electrically connected to the ventilation duct travel control box 3, the travel mechanism 7 and the baffle drive mechanism 8 respectively.

[0031] Preferably, the baffle drive mechanism 8 includes a first motor 81, a vertical gear shaft 82, and multiple horizontal levers 83. The horizontal levers 83 are V-shaped, and are spaced vertically apart. One end of each horizontal lever 83 is hinged to the front end face of the windshield baffle 6, and the other end is fixedly mounted on the vertical gear shaft 82 via a gear disc 84. A first gear 85 is coaxially mounted on the lower end of the vertical gear shaft 82, and a second gear 86 meshes with the first gear 85. The second gear 86 meshes with the motor gear of the first motor 81.

[0032] Ideally, the C-frame 4 is composed of a hollow square tube. The first motor 81 is fixed on the bottom horizontal section of the C-frame 4. The motor gear of the first motor 81 extends into the interior of the C-frame 4. The first gear 85, the second gear 86, the vertical gear shaft 82, and each gear disk 84 are all located inside the C-frame 4. The vertical gear shaft 82 is rotatably engaged with the C-frame 4. The second gear 86 is also rotatably mounted on the C-frame 4. An arc-shaped hole is provided on the C-frame 4 corresponding to the gear disk 84 for the horizontal lever 83 to rotate.

[0033] Ideally, both the ventilation duct travel control box 3 and the travel mechanism 7 include a housing with a through hole for the steel wire rope to pass through. The housing contains a second motor a, a drive shaft b, a roller c, and a U-shaped sliding seat d. The drive shaft b passes movably through the U-shaped sliding seat d from the side. The roller c is coaxially fixed to the drive shaft b and is limited to its left and right sides within the U-shaped sliding seat d. The steel wire rope 2 passes between the U-shaped sliding seat d and the roller c, creating a frictional contact between the roller c and the steel wire rope 2. A driven gear e is coaxially fixed to the other end of the drive shaft b, and the motor gear of the second motor a meshes with the driven gear e.

[0034] Ideally, the motor gear on the traveling mechanism 7 meshes perpendicularly with the driven gear e, and the housing volume of the traveling mechanism 7 is relatively small. This arrangement facilitates the adjustment of the installation position of the second motor a on the traveling mechanism 7 and avoids interference between the second motor a and the wire rope 2.

[0035] Ideally, the controller 5 is embedded in the port of the bottom horizontal section of the C-frame 4, which is convenient for installation, and some of the wiring harnesses connected to the controller 5 can be placed inside the C-frame 4, making wiring convenient and safe.

[0036] Ideally, the dust sensors 9 are distributed on the top transverse section of the C-frame 4, and the dust sensors 9 are laser dust sensors.

[0037] A method for intelligent control of track-moving compressed air flow in a fully mechanized tunneling face, based on the aforementioned intelligent control device for track-moving compressed air flow in a fully mechanized tunneling face, comprises the following steps:

[0038] S1. During construction, the dust concentration at the tunnel face is monitored by the dust sensor 9, and the monitoring data is fed back to the controller 5. When the dust concentration does not exceed the set value, the controller 5 commands the baffle drive mechanism 8 to drive the windshield 6 to rotate horizontally to be perpendicular to the wire rope 2, thereby blocking the air in front of the ventilation duct 1. At this time, the airflow ejected from the ventilation duct 1 is blocked by the windshield 6, and the airflow spreads to the surroundings along the plane of the windshield 6.

[0039] When the dust concentration exceeds the set value, the controller 5 commands the baffle drive mechanism 8 to drive the windshield 6 to flip forward horizontally and open, so that the airflow is supplied to the front end of the roadway along the windshield 6, and the dust generated by the cutting at the front end of the tunneling face is blown to the surroundings, thereby reducing the dust concentration at the front end of the tunneling face; and during this process, the C-shaped frame 4 can be driven forward by the walking mechanism 7, and the ventilation duct 1 can be driven forward by the ventilation duct walking control box 3, thereby adjusting the position of the C-shaped frame 4 and the ventilation duct 1 on the wire rope 2, and thus adjusting the airflow intensity.

[0040] When the dust concentration drops below the set value, the controller 5 commands the baffle drive mechanism 8 to drive the windproof baffle 6 back to its original position; this cycle repeats until one tunneling operation is completed.

[0041] S2. After one tunneling operation is completed, the next section of wire rope 2 is installed at the top of the newly tunneled roadway. The control device body A is removed from the previous section of wire rope 2 and installed on the next section of wire rope 2. The front end of the ventilation duct 1 is removed from the previous section of wire rope 2. Then, the rear end of the ventilation duct 1 is extended forward from the folded state, so that the front end of the folded ventilation duct 1 is installed on the next section of wire rope 2, so that the front end of the ventilation duct 1 is close to the control device body A. Finally, the two sections of wire rope 2 are installed and fixed in place, and the next tunneling operation begins.

[0042] S3. Repeat this process until the entire tunnel excavation is completed.

[0043] Ideally, the length of a single tunneling operation should be 10-20m, the length of a section of wire rope 2 should be 10-15m, and the distance between the control device body A and the front end of the ventilation duct 1 should be 1-1.5m.

Claims

1. A track-moving intelligent control device for compressed air flow in a fully mechanized tunneling face, comprising an air duct (1), wherein the air duct (1) is a folding air duct, characterized in that: It also includes a control device body (A) and a steel wire rope (2) set along the tunnel excavation direction. The front end of the steel wire rope (2) is close to the tunnel face. The front and rear ends of the steel wire rope (2) are respectively fixed to the top of the tunnel by a hanger, and there is a gap between the steel wire rope (2) and the top of the tunnel. The ventilation duct (1) is slidably suspended on the steel wire rope (2) along the tunnel excavation direction by several lifting rings, and the rear end of the ventilation duct (1) is fixed to the steel wire rope (2). The front end of the ventilation duct (1) is provided with a ventilation duct travel control box (3) for driving it to move along the steel wire rope (2). The control device body (A) includes a C-shaped frame (4), a controller (5) and a windproof baffle (6). The C-shaped frame (4) and the windproof baffle (6) are both set vertically. The top of the C-shaped frame (4) is vertical. Sleeved on the wire rope (2) and slidingly fitted with the wire rope (2), the C-shaped frame (4) is provided with a walking mechanism (7) for driving it to move along the wire rope (2), the windproof baffle (6) is located in front of the air outlet of the air duct (1) and inside the C-shaped frame (4), one side end of the windproof baffle (6) is hinged to the vertical section of the C-shaped frame (4), and the C-shaped frame (4) is provided with a baffle driving mechanism (8) for driving the windproof baffle (6) to flip, and the C-shaped frame (4) is also provided with several dust sensors (9), the signal output end of the dust sensor (9) is connected to the signal receiving end of the controller (5), and the controller (5) is electrically connected to the air duct walking control box (3), the walking mechanism (7) and the baffle driving mechanism (8) respectively; The baffle drive mechanism (8) includes a first motor (81), a vertical gear shaft (82), and multiple horizontal levers (83). The horizontal levers (83) are V-shaped and spaced vertically. One end of each horizontal lever (83) is hinged to the front end face of the windshield baffle (6), and the other end of each horizontal lever (83) is fixedly mounted on the vertical gear shaft (82) via a gear disc (84). The lower end of the vertical gear shaft (82) is coaxially fixedly mounted with a first gear. (85), the first gear (85) is meshed with the second gear (86), the second gear (86) meshes with the motor gear of the first motor (81); the C-shaped frame (4) is composed of hollow square tubes, the first motor (81) is fixed on the bottom horizontal section of the C-shaped frame (4), the motor gear of the first motor (81) extends into the interior of the C-shaped frame (4), and the first gear (85), the second gear (86), the vertical gear shaft (82) and each gear disc ( 84) are all located inside the C-shaped frame (4). The vertical gear shaft (82) is rotatably engaged with the C-shaped frame (4). The C-shaped frame (4) has an arc-shaped hole for the horizontal lever (83) to rotate at the position corresponding to the gear disk (84). The wind tunnel walking control box (3) and the walking mechanism (7) both include a box body. The box body is provided with a through hole for the steel wire rope to pass through. The box body is provided with a second motor (a), a transmission shaft (b), a roller (c), and a U-shaped sliding seat (d). The drive shaft (b) moves through the U-shaped sliding seat (d) from the side. The roller (c) is coaxially fixed on the drive shaft (b) and limited to the left and right sides in the U-shaped sliding seat (d). The wire rope (2) passes between the U-shaped sliding seat (d) and the roller (c), so that the roller (c) and the wire rope (2) are in frictional contact. The other end of the drive shaft (b) is coaxially fixed with a driven gear (e). The motor gear of the second motor (a) meshes with the driven gear (e).

2. The intelligent control device for track-moving compressed air flow guidance in a fully mechanized tunneling face according to claim 1, characterized in that: The motor gear on the walking mechanism (7) meshes perpendicularly with the driven gear (e).

3. The intelligent control device for track-moving compressed air flow guidance in a fully mechanized tunneling face according to claim 1, characterized in that: The controller (5) is embedded in the port of the bottom horizontal section of the C-frame (4).

4. The intelligent control device for track-moving compressed air flow guidance in a fully mechanized tunneling face according to claim 1, characterized in that: The dust sensor (9) is distributed on the top horizontal section of the C-frame (4), and the dust sensor (9) is a laser dust sensor.

5. A method for intelligent control of track-moving compressed air flow in a fully mechanized tunneling face, characterized in that, The intelligent control device for track-moving compressed air flow guidance in a fully mechanized tunneling face according to any one of claims 1-4 includes the following steps: S1. During construction, the dust concentration at the tunnel face is monitored by the dust sensor (9), and the monitoring data is fed back to the controller (5). When the dust concentration does not exceed the set value, the controller (5) commands the baffle drive mechanism (8) to drive the windproof baffle (6) to rotate horizontally to be perpendicular to the wire rope (2), so as to block the air outlet of the air duct (1). At this time, the airflow ejected from the air duct (1) is blocked by the windproof baffle (6), and the airflow spreads to the surroundings along the plane of the windproof baffle (6). When the dust concentration exceeds the set value, the controller (5) commands the baffle drive mechanism (8) to drive the windproof baffle (6) to flip forward horizontally and open, so that the airflow is supplied to the front end of the roadway along the windproof baffle (6), and the dust generated by the cutting at the front end of the tunneling working face is blown to the surroundings, thereby reducing the dust concentration at the front end of the working face; and in this process, the C-frame (4) can be driven forward by the walking mechanism (7), and the ventilation duct (1) can be driven forward by the ventilation duct walking control box (3), thereby adjusting the position of the C-frame (4) and the ventilation duct (1) on the wire rope (2), and thus adjusting the airflow force; When the dust concentration drops below the set value, the controller (5) commands the baffle drive mechanism (8) to drive the windproof baffle (6) back to its original position; the cycle repeats until one tunneling operation is completed. S2. After one tunneling operation is completed, a new section of wire rope (2) is installed at the top of the newly tunneled roadway. The control device body (A) is removed from the previous section of wire rope (2) and installed on the next section of wire rope (2). The front end of the ventilation duct (1) is removed from the previous section of wire rope (2). Then, the rear end of the ventilation duct (1) is extended forward from the folded state and the front end of the folded ventilation duct (1) is installed on the next section of wire rope (2) so that the front end of the ventilation duct (1) is close to the control device body (A). Finally, the two sections of wire rope (2) are installed and fixed in place before the next tunneling operation begins. S3. Repeat this process until the entire tunnel excavation is completed.

6. The intelligent control method for track-moving compressed air flow guidance in a fully mechanized tunneling face according to claim 5, characterized in that: The length of a single tunneling operation is 10-20m, the length of a section of wire rope (2) is 10-15m, and the distance between the control device body (A) and the front end of the ventilation duct (1) is 1-1.5m.

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