A tunneling machine with a water-saving dust falling device

Abstract

The application relates to a tunneling machine with a water-saving dust falling device, and belongs to the field of coal mining dust falling devices.The tunneling machine body comprises a lifting arm, the lifting arm is provided with a gun head; a mounting cylinder slides along the length direction of the lifting arm; a driving mechanism one drives the mounting cylinder to move; a mounting rod is hinged to the mounting cylinder, the mounting rod is inserted with a high-pressure spray head; a driving mechanism two drives the mounting rod to rotate around the hinge point; a mounting bucket is arranged at one end of the mounting cylinder; a blowing piece is hinged to the mounting bucket, the blowing piece is provided with an air outlet; a driving mechanism three drives the blowing piece to rotate around the hinge point; a dust cover is arranged outside the mounting cylinder, the dust cover is provided with a dust concentration detection device; a controller makes a judgment according to the data obtained by the dust concentration detection device, and controls the driving mechanism one, the driving mechanism two and the driving mechanism three respectively. The application has the advantages that the water mist spray head and the wind direction angle can be automatically adjusted according to different operation scenes, so that the dust falling effect is improved.

Description

Technical Field

[0001] This application relates to the field of dust suppression devices for coal mining, and in particular to a tunneling machine with a water-saving dust suppression device. Background Technology

[0002] When using tunneling machines for coal mining, a large amount of dust is generated at the blasting head, and this dust spreads with the airflow in the tunnel, posing a health hazard to workers. To reduce the dust concentration in the tunnel, water mist nozzles are usually installed on the tunneling machine body, cutting arm, etc., spraying water directly onto the working face. However, the droplets in this method are relatively large and cannot effectively capture inhaled dust, resulting in limited dust suppression. In addition, traditional dust suppression methods consume a lot of water, and the water mist sprayed directly onto the working face forms water droplets upon impact, which accumulate in the mining area over time, further worsening the working environment in the tunnel.

[0003] To address the aforementioned issues, a vortex atomizing dust suppression device suitable for tunneling machines has been developed. This device generates a vortex-shaped water mist that fully envelops the tunneling machine's blast head, reducing dust dispersion, improving the capture effect of inhalable dust, enhancing dust suppression efficiency, and significantly reducing water consumption, thereby improving the working environment in the mining area.

[0004] Regarding the aforementioned technologies, the inventors believe that although these technologies improve dust suppression to some extent, the fixed water mist nozzles and wind direction angles result in a fixed shape and size of the formed vortex-like water mist. This makes it impossible to adjust the water mist nozzles and wind direction angles according to different operating scenarios, thus reducing the dust suppression effect. Summary of the Invention

[0005] In order to improve dust suppression by automatically adjusting the water mist nozzles and wind direction angle according to different operating scenarios, this application provides a tunneling machine with a water-saving dust suppression device.

[0006] The tunneling machine with a water-saving dust suppression device provided in this application adopts the following technical solution:

[0007] A tunneling machine equipped with a water-saving dust suppression device includes:

[0008] The tunneling machine body includes a lifting arm, and a blasting head is provided at the end of the lifting arm;

[0009] The mounting sleeve is slidably connected to the lifting arm near the gun head and slides along the length of the lifting arm;

[0010] Drive mechanism one is located on the side of the lifting arm and is used to drive the movement of the mounting cylinder;

[0011] The mounting rod is hinged to the side wall of the mounting cylinder near the nozzle. A high-pressure nozzle is inserted into one end of the mounting rod near the nozzle. The high-pressure nozzle is used to spray water outward. The mounting rod is distributed circumferentially along the mounting cylinder.

[0012] Drive mechanism two is located on the side of the mounting cylinder and is used to drive the mounting rod to rotate around the hinge point;

[0013] The mounting bucket is located at one end of the mounting cylinder near the gun head and is detachably connected to the mounting cylinder.

[0014] The blower is hinged to the side wall of the mounting bucket. The blower has an air outlet at one end near the cannon head. When in use, the airflow blows out from the air outlet, causing the water jet from the high-pressure nozzle to form a vortex that wraps around the cannon head.

[0015] Drive mechanism three is located on the outer wall of the mounting bucket and is used to drive the blower to rotate around the hinge point;

[0016] A dust cover is installed outside the mounting cylinder, and a dust concentration detection device is installed at the end of the dust cover.

[0017] The controller is used to make judgments based on the data obtained from the dust concentration detection device, and to send control signals to drive mechanism one, drive mechanism two and drive mechanism three based on the judgments.

[0018] By adopting the above technical solution, when the blasting head contacts the working face of the coal mine, the high-pressure blower and high-pressure water pump are started. The high-pressure gas generated is sent out through the air outlet on the blower, forming a vortex. High-pressure water is sprayed out from the high-pressure nozzle, forming a vortex-shaped water mist. The vortex-shaped water mist fully covers the blasting head of the tunneling machine, improving the capture effect of inhalable dust and reducing dust dispersion. On the one hand, it can effectively improve the dust suppression effect, and on the other hand, it can significantly reduce water consumption.

[0019] In addition, during the mining process, the dust concentration detection device monitors the dust concentration near the blast head in real time and transmits the data to the controller. The controller analyzes and judges the data and sends control signals to drive mechanism one, drive mechanism two, and drive mechanism three respectively. Drive mechanism one adjusts the distance between the mounting cylinder and the blast head; drive mechanism two drives the mounting rod to rotate around the hinge point to adjust the angle of the high-pressure nozzle; drive mechanism three drives the blower to rotate around the hinge point to adjust the angle of the blower.

[0020] In summary, the dust concentration detection device provides real-time feedback on dust handling to the controller, and can automatically adjust the distance between the mounting cylinder and the nozzle, the angle of the high-pressure nozzle, and the angle of the blowing component based on the dust handling situation. This allows for automatic adjustment of the high-pressure nozzle angle and the blowing component angle according to different operating scenarios, forming vortex-shaped water mist of different sizes to better encapsulate and absorb dust, thereby improving the dust suppression effect.

[0021] Optionally, the drive mechanism includes a push hydraulic cylinder, which is fixed to the side wall of the lifting arm and its piston rod extends along the length of the lifting arm. The end of the piston rod of the push hydraulic cylinder is connected to the end of the mounting cylinder away from the gun head.

[0022] By adopting the above technical solution, the hydraulic cylinder is pushed to extend or retract a certain distance according to the action signal sent by the controller. Extending the piston rod of the hydraulic cylinder causes the mounting cylinder to move closer to the gun head, thereby reducing the distance between the blower and the high-pressure nozzle and the gun head; retracting the piston rod causes the mounting cylinder to move away from the gun head, thereby increasing the distance between the blower and the gun head, thus facilitating the control of the distance between the mounting cylinder and the gun head.

[0023] Optionally, the inner wall of the mounting cylinder is provided with a sliding plate, which extends along the axial direction of the mounting cylinder;

[0024] The lifting arm is provided with a sliding groove along the sliding trajectory of the mounting cylinder, and the length of the sliding groove extends along the length of the lifting arm.

[0025] The sliding plate slides along the length of the sliding groove.

[0026] By adopting the above technical solution, the sliding groove guides the movement of the mounting cylinder. As the mounting cylinder slides along the length of the lifting arm, the sliding plate slides along the length of the sliding groove, thereby making the movement of the mounting cylinder more stable and keeping the mounting cylinder always aligned with the central axis of the lifting arm, so that the water mist formed can better wrap around the gun head.

[0027] Optionally, the sliding plate slides radially along the mounting cylinder, so that the end of the sliding plate is inserted into or disengaged from the sliding groove on the lifting arm at the corresponding sliding groove position.

[0028] The end of the sliding plate away from the sliding groove is threadedly connected to a bolt, and the end of the bolt engages with the threaded side wall of the mounting cylinder.

[0029] The piston rod end of the hydraulic cylinder and the mounting cylinder end are detachably connected.

[0030] By adopting the above technical solution, it is easy to connect and disconnect the sliding plate and the mounting cylinder. Since the high-pressure nozzle is prone to clogging, it needs to be inspected and replaced after a period of use.

[0031] When maintenance is required on the mounting cylinder, first detach the dust cover from the mounting cylinder and the mounting bucket from the mounting cylinder; then, remove the nozzle from the end of the lifting arm and slide the mounting bucket along the lifting arm until it is detached from the lifting arm; after that, loosen bolt one and slide the sliding plate radially away from the mounting cylinder until it is detached from the mounting cylinder, so that the mounting cylinder is freed from the restriction of the sliding plate, making it easy to detach from the lifting arm, thereby allowing maintenance work to be carried out on the high-pressure nozzle.

[0032] Optionally, the second driving mechanism includes:

[0033] A butterfly bevel gear is fitted onto the outer wall of the mounting cylinder, and a flat thread is provided on the side.

[0034] The driving component has one end hinged to the mounting rod and the other end meshing with the side of the butterfly bevel gear that is provided with a planar thread. The driving component moves radially along the butterfly bevel gear.

[0035] The drive bevel gear meshes with the butterfly bevel gear, and a drive servo is connected to the end of the drive bevel gear. The drive servo is used to drive the drive bevel gear to rotate.

[0036] By adopting the above technical solution, the output shaft of the drive servo rotates, which in turn drives the bevel gear to rotate, causing the disc bevel gear to rotate around the center. This causes the drive component to move outward along the radial direction of the disc bevel gear, which in turn causes the end of the high-pressure nozzle away from the drive component to move around the hinge point towards the central axis of the mounting cylinder. The drive component moves inward along the radial direction of the disc bevel gear, which in turn causes the end of the high-pressure nozzle away from the drive component to move around the hinge point towards the central axis of the mounting cylinder, thereby facilitating the adjustment of the high-pressure nozzle's spray angle.

[0037] Optionally, the drive mechanism three includes:

[0038] The push rod extends along the generatrix of the outer wall of the mounting bucket in the length direction, and the mounting rod moves along its own length direction, with its end hinged to the blower.

[0039] The slider is fixedly connected to the push rod, and the slider slides along the outer wall of the mounting bucket.

[0040] The screw is axially parallel to the generatrix of the outer wall of the mounting bucket and is threadedly engaged with the slider.

[0041] Rotating assembly, used to drive the screw to rotate.

[0042] By adopting the above technical solution, the rotating component drives the screw to rotate, and the rotation of the screw drives the slider to slide along the generatrix direction of the outer wall of the mounting bucket, thereby driving the push rod to slide along the generatrix direction of the outer wall of the mounting bucket, and driving the blower to rotate around the hinge point, which facilitates the adjustment of the blowing angle.

[0043] Optionally, the rotating assembly includes:

[0044] The intermediate bevel gear is rotatably connected to the end of the mounting bucket and is coaxially arranged with the mounting bucket.

[0045] The driven bevel gear meshes with the intermediate bevel gear, and the driven bevel gear is fixed to the end of the screw.

[0046] By adopting the above technical solution, the rotation of the intermediate bevel gear drives the rotation of the driven bevel gear, thereby driving all screws to rotate synchronously in the same direction, enabling the blower components installed on the mounting bucket to rotate simultaneously. Furthermore, compared to the traditional drive method where drive motors are installed at the ends of all screws to drive their rotation, the above drive method achieves synchronous rotation of all screws in the same direction through a mechanical structure, and also saves on drive components and has a simpler structure.

[0047] Optionally, the rotating assembly includes:

[0048] The drive bevel gear meshes with the side wall of the middle bevel gear, and a drive motor is connected in the middle. The drive motor is used to drive the drive bevel gear to rotate.

[0049] By adopting the above technical solution, the output shaft of the drive motor rotates, which in turn drives the drive bevel gear to rotate, thereby providing power for the rotation of the intermediate bevel gear. Since a connecting hole needs to be opened in the middle of the intermediate bevel gear to allow the lifting arm to pass through, it is impossible to directly place a drive motor at its center to drive the intermediate gear to rotate. The above driving method can effectively solve this problem and provide power to the intermediate bevel gear. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0051] Figure 2 This is a schematic diagram shown in the embodiment to highlight the mounting cylinder.

[0052] Figure 3 This is a schematic diagram shown in the embodiment to highlight the sliding groove.

[0053] Figure 4 This is an exploded view of the embodiment to highlight the planar thread.

[0054] Figure 5 This is a schematic diagram shown in the embodiment to highlight the installation bucket.

[0055] Figure 6 This is a schematic diagram shown in the embodiment to highlight the dust cover.

[0056] Explanation of reference numerals in the attached drawings: 1. Tunneling machine body; 11. Lifting arm; 111. Sliding groove; 12. Head; 2. Mounting cylinder; 21. High-pressure nozzle; 22. Sliding plate; 221. Overlapping end; 222. Bolt one; 23. Push hydraulic cylinder; 231. Bolt two; 3. Hinge seat one; 31. Mounting rod; 32. Drive component; 321. Connecting part; 322. Gear; 33. Butterfly bevel gear; 331. Flat thread; 34. Limit cover; 341. Clearance groove; 35. Drive servo motor; 36. Drive bevel gear; 4. Mounting bucket; 41. Overlap edge; 42. Connecting port; 43. Hinge seat two; 44. Blower; 441. Air outlet; 45. Push rod; 46. Slider; 47. Screw; 5. Rotating assembly; 51. Intermediate bevel gear; 511. Connecting hole; 52. Driven bevel gear; 53. Drive bevel gear; 54. Drive motor; 6. Dust cover; 61. Head; 611. Clearance hole; 612. Dust concentration detection device; 62. Tail; 63. Connecting protrusion. Detailed Implementation

[0057] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0058] This application discloses a tunneling machine equipped with a water-saving dust suppression device. (Refer to...) Figure 1 A tunneling machine with a water-saving dust suppression device includes a tunneling machine body 1, a lifting arm 11 is provided on the tunneling machine body 1, and a blasting head 12 is provided at the end of the lifting arm 11. The structure on the tunneling machine body 1 is an existing structure, which will not be described in detail here.

[0059] Reference Figure 2 A mounting cylinder 2 is provided near the gun head 12 on the lifting arm 11, and a high-pressure nozzle 21 is provided on the mounting cylinder 2. The mounting cylinder 2 is sleeved on the outside of the lifting arm 11, and the central axis of the mounting cylinder 2 coincides with the central axis of the lifting arm 11. The mounting cylinder 2 can slide along the length of the lifting arm 11.

[0060] Reference Figure 3 The outer wall of the lifting arm 11 has a sliding groove 111 along the sliding trajectory of the mounting cylinder 2, and the sliding groove 111 extends axially along the mounting cylinder 2. The mounting cylinder 2 is provided with several sliding plates 22; the figure describes two sliding plates 22 as an example. The ends of the sliding plates 22 are inserted into the sliding groove 111 and can slide along the length of the sliding groove 111. When the mounting cylinder 2 slides along the length of the lifting arm 11, the sliding plates 22 slide along the length of the sliding groove 111, making the movement of the mounting cylinder 2 more stable.

[0061] Reference Figure 3 The sliding plate 22 slides radially along the mounting cylinder 2 to be inserted into the side wall of the mounting cylinder 2 or to be disengaged from the mounting cylinder 2. When the sliding plate 22 is inserted into the mounting cylinder 2, the end of the sliding plate 22 is inserted into the sliding groove 111. The sliding plate 22 includes an overlapping end 221. When the sliding plate 22 is inserted into the mounting cylinder 2, the overlapping end 221 abuts against the outer wall of the mounting cylinder 2. A bolt 222 is threaded onto the overlapping end 221. The end of the bolt 222 passes through the overlapping end 221 and is threadedly connected to the outer wall of the mounting cylinder 2, thereby fixing the sliding plate 22.

[0062] Reference Figure 3 Two hydraulic cylinders 23 are fixedly mounted on the side wall of the lifting arm 11. The piston rods of the hydraulic cylinders 23 extend axially towards the mounting cylinder 2 along the lifting arm 11 and are inserted into the end of the mounting cylinder 2 away from the gun head 12. Bolts 231 are threaded onto the side wall of the mounting cylinder 2 at positions corresponding to the piston rods of the hydraulic cylinders 23. The ends of the bolts 231 pass through the mounting cylinder 2 and abut against the side wall of the hydraulic cylinder piston rod to fix the hydraulic cylinders 23 to the mounting cylinder 2. When it is necessary to adjust the distance between the mounting cylinder 2 and the gun head 12, the piston rods of the hydraulic cylinders 23 are extended or retracted, causing the mounting cylinder 2 to slide along the length of the lifting arm 11.

[0063] Reference Figure 2 A high-pressure nozzle 21 is located at one end of the mounting cylinder 2 near the nozzle head 12, and several high-pressure nozzles 21 are evenly distributed along the circumference of the mounting cylinder 2. The high-pressure nozzles 21 are connected to a high-pressure water pump via water pipes, and high-pressure water is sprayed out from the high-pressure nozzles 21 through the water pipes. A hinge seat 3 is fixedly provided on the outer wall of the mounting cylinder 2 corresponding to the high-pressure nozzle 21, and the hinge seat 3 corresponds to the high-pressure nozzle 21 one by one. A mounting rod 31 is hinged to the hinge seat 3, and the high-pressure nozzle 21 is inserted into the end of the mounting rod 31 and is pressed against the mounting rod 31 by bolts. A drive member 32 is hinged to the other end of the mounting rod 31.

[0064] Reference Figure 4 The driving component 32 includes a connecting part 321 and a toothed part 322. The connecting part 321 is rod-shaped, with one end hinged to the end of the mounting rod 31 away from the high-pressure nozzle 21, and the other end fixed at the middle position of the toothed part 322. A butterfly bevel gear 33 is fitted on the mounting cylinder 2 near the driving component 32. The butterfly bevel gear 33 coincides with the central axis of the mounting cylinder 2. A planar thread 331 is provided on the side of the butterfly bevel gear 33 near the driving component 32. The toothed part 322 meshes with the planar thread 331 side of the butterfly bevel gear 33. When the butterfly bevel gear 33 rotates, it drives the driving component 32 to move radially along the butterfly bevel gear 33.

[0065] Reference Figure 2A limiting cover 34 is provided on one side of the butterfly bevel gear 33 with a planar thread 331. The limiting cover 34 is fixedly connected to the butterfly bevel gear and is used to make the driving member 32 tightly mesh with the butterfly bevel gear 33 to prevent the driving member 32 from disengaging from the butterfly bevel gear 33. A relief groove 341 is provided on the limiting cover 34 corresponding to the movement direction of the driving member 32, and the driving member 32 slides along the length direction of the relief groove 341.

[0066] Reference Figure 2 A drive servo motor 35 is fixed on the mounting cylinder 2 near the butterfly bevel gear 33. The output shaft of the drive servo motor 35 extends radially along the mounting cylinder 2, and a drive bevel gear 36 is fixed to the end of the output shaft. The drive bevel gear 36 meshes with the side wall of the butterfly bevel gear 33.

[0067] When the angle of the high-pressure nozzle 21 needs to be adjusted, the output shaft of the drive servo motor 35 rotates, which drives the drive bevel gear 36 to rotate, which in turn drives the butterfly bevel gear 33 to rotate around the center. This causes the drive component 32 to move outward along the radial direction of the butterfly bevel gear 33, which in turn causes the end of the high-pressure nozzle 21 away from the drive component 32 to move around the hinge point towards the central axis of the mounting cylinder 2. The drive component 32 moves inward along the radial direction of the butterfly bevel gear 33, which in turn causes the end of the high-pressure nozzle 21 away from the drive component 32 to move around the hinge point towards the central axis of the mounting cylinder 2. This facilitates the adjustment of the spray angle of the high-pressure nozzle 21.

[0068] Reference Figure 2 , 5 An installation bucket 4 is provided at one end of the installation cylinder 2 near the gun head 12. An overlapping edge 41 is fixed to the end of the installation bucket 4. The inner diameter of the overlapping edge 41 is the same as the inner diameter of the installation cylinder 2, and the outer diameter of the overlapping edge 41 is the same as the outer diameter of the installation cylinder 2. Several bolts are threaded onto the overlapping edge 41. When the installation bucket 4 is inserted into the end of the installation cylinder 2, the overlapping edge 41 overlaps with the end of the installation cylinder 2. Tightening the bolts causes the ends of the bolts to connect threadedly with the end of the installation cylinder 2, thereby fixing the installation bucket 4 and the installation cylinder 2 relatively.

[0069] Reference Figure 2 , 5A connecting port 42 is provided along the generatrix of the mounting bucket 4, and the connecting ports 42 are evenly distributed around the central axis of the mounting bucket 4. A hinge seat 2 43 is fixedly provided on the inner wall of the connecting port 42, and a blower 44 is hinged to the hinge seat 2 43. An air outlet 441 is provided on the blower 44, and a push rod 45 is hinged to the end of the blower 44 away from the air outlet 441. The length direction of the push rod 45 is parallel to the generatrix of the mounting bucket 4 and extends along the generatrix of the mounting bucket 4. A slider 46 is slidably connected along the generatrix of the mounting bucket 4. The slider 46 is fixedly connected to the push rod 45, and a screw 47 is threaded onto the slider 46, extending along the generatrix of the mounting bucket 4. The mounting bucket 4 is equipped with a rotating assembly 5 that drives the screw 47 to rotate. The rotating assembly 5 drives the screw 47 to rotate, and the rotation of the screw 47 drives the slider 46 to slide along the generatrix direction of the outer wall of the mounting bucket 4, thereby driving the push rod 45 to slide along the generatrix direction of the outer wall of the mounting bucket 4, and driving the blower 44 to rotate around the hinge point, so as to facilitate the adjustment of the blowing angle.

[0070] Reference Figure 5 The rotating assembly 5 includes an intermediate bevel gear 51, a driven bevel gear 52, and a driving bevel gear 53. The intermediate bevel gear 51 is rotatably connected to the end of the mounting bucket 4, and has a connecting hole 511 in the middle. When the mounting bucket 4 is fitted onto the lifting arm 11, the lifting arm 11 passes through the connecting hole 511. The side wall of the driven bevel gear 52 meshes with the side wall of the intermediate bevel gear 51, and the driven bevel gear 52 is fixed to the end of the screw 47. The driving bevel gear 53 meshes with the side wall of the intermediate bevel gear 51, and a drive motor 54 is fixedly connected to its middle portion. The drive motor 54 is used to drive the driving bevel gear 53 to rotate.

[0071] The output shaft of the drive motor 54 rotates, driving the drive bevel gear 53 to rotate, thereby providing power for the rotation of the intermediate bevel gear 51. Since a connecting hole 511 needs to be opened in the middle of the intermediate bevel gear 51 to allow the lifting arm 11 to pass through, it is impossible to directly place the drive motor 54 at its center to drive the intermediate gear. The above-described driving method effectively solves this problem and provides power to the intermediate bevel gear 51. The rotation of the intermediate bevel gear 51 drives the driven bevel gear 52 to rotate, thereby driving all the screws 47 to rotate synchronously in the same direction, enabling the blower 44 mounted on the mounting bucket 4 to rotate simultaneously and synchronously. Furthermore, compared to the traditional driving method of placing the drive motor 54 at the ends of all the screws 47 to drive their rotation, the above-described driving method achieves synchronous rotation of all the screws 47 through a mechanical structure, and also saves on drive power and has a simpler structure.

[0072] Reference Figure 6The mounting cylinder 2 is also covered by a dust cover 6, which includes a head 61 and a tail 62. Several connecting protrusions 63 are fixed at the connection point between the side wall of the head 61 and the side wall of the tail 62, and the connecting protrusions 63 on the head 61 correspond one-to-one with those on the tail 62, and are connected by bolts. A clearance hole 611 is provided on the head 61 at the position corresponding to the high-pressure nozzle 21, and the clearance hole 611 corresponds one-to-one with the high-pressure nozzle 21. Several dust concentration detection devices 612 are fixed on the side of the dust cover 6 near the nozzle 12, and the dust concentration detection devices 612 are evenly distributed in a ring around the head 61.

[0073] Because the high-pressure nozzle 21 is prone to clogging, it needs to be inspected and replaced after a period of use. When it is necessary to inspect the mounting cylinder 2, first remove the nozzle 12 from the end of the lifting arm 11, so that the head 61 and the tail 62 are separated from each other. Then, slide the head 61 along the length of the lifting arm 11 until it is separated from the lifting arm 11, and slide the tail 62 in the opposite direction of the lifting arm 11. It does not need to be separated from the lifting arm 11, but only from the mounting cylinder 2. Then, separate the mounting bucket 4 from the mounting cylinder 2, and slide the mounting head along the lifting arm 11 until it is separated from the lifting arm 11. After that, loosen the bolt 222, so that the sliding plate 22 slides radially away from the mounting cylinder 2 until it is separated from the mounting cylinder 2, so that the mounting cylinder 2 is freed from the restriction of the sliding plate 22, making it easy to detach from the lifting arm 11, thereby allowing the high-pressure nozzle 21 on it to be inspected.

[0074] A tunneling machine with a water-saving dust suppression device also includes a controller. The controller is electrically connected to a dust concentration detection device 612. During mining, the dust concentration detection device 612 continuously detects the dust concentration in the air and transmits the detected data to the controller. The controller stores the dust concentration data and compares it with the dust concentration data from the previous moment to obtain the difference. A negative value indicates an increase in dust concentration, proving that the dust removal efficiency in the previous stage was too low to handle the increase in dust during mining. It is necessary to correct the generated vortex water flow. The controller drives the hydraulic cylinder 23, the drive servo motor 35, and the drive motor 54 to output drive signals. By changing the distance between the mounting cylinder 2 and the blast head 12, the angle of the high-pressure nozzle 21, and the angle of the blowing component 44, the controller can automatically adjust the angle of the high-pressure nozzle 21 and the angle of the blowing component 44 according to different operating scenarios, forming vortex-shaped water mist of different sizes to better envelop and absorb dust, thereby improving the dust suppression effect. A positive value indicates a decrease in dust concentration, proving that the dust removal efficiency in the previous stage is sufficient to handle the increase in dust during the mining process. This means that the next stage of mining can maintain the angle and distance used in the previous stage without any changes.

[0075] The implementation principle of a tunneling machine with a water-saving dust suppression device in this application embodiment is as follows:

[0076] When the tunnel boring machine 12 reaches the working face to mine coal, the high-pressure blower and high-pressure water pump are started. The high-pressure gas generated is sent out through the air outlet 441 on the blower 44, forming a vortex. High-pressure water is sprayed out from the high-pressure nozzle 21, forming a vortex-shaped water mist. The vortex-shaped water mist fully covers the tunnel boring machine 12, improving the capture effect of inhalable dust and reducing dust dispersion. On the one hand, it can effectively improve the dust suppression effect, and on the other hand, it can significantly reduce water consumption.

[0077] During mining, the dust concentration detection device 612 continuously monitors the dust concentration in the air and transmits the data to the controller. The controller stores the dust concentration data and compares it with the dust concentration data from the previous moment to obtain the difference. A negative value indicates an increase in dust concentration, proving that the dust removal efficiency in the previous stage was too low to handle the increase in dust during mining. The generated vortex water flow needs to be corrected. The controller then drives the hydraulic cylinder 23, the drive servo motor 35, and the drive motor 54 to output drive signals. By changing the distance between the mounting cylinder 2 and the blast head 12, the angle of the high-pressure nozzle 21, and the angle of the blowing component 44, adjustments are made. This allows for automatic adjustment of the angles of the high-pressure nozzle 21 and the blowing component 44 according to different operating scenarios, forming vortex-shaped water mists of different sizes to better encapsulate and absorb dust, improving dust suppression. A positive value indicates a decrease in dust concentration, proving that the dust removal efficiency in the previous stage is sufficient to handle the increase in dust during mining. This means that the next stage of mining can maintain the angles and distances used in the previous stage without any changes.

[0078] When it is necessary to adjust the distance between the mounting cylinder 2 and the gun head 12, the piston rod of the hydraulic cylinder 23 is extended or retracted, causing the mounting cylinder 2 to slide along the length of the lifting arm 11.

[0079] When the angle of the blower 44 needs to be adjusted, the output shaft of the drive motor 54 rotates, driving the drive bevel gear 53 to rotate, thereby providing power for the rotation of the intermediate bevel gear 51. The rotation of the intermediate bevel gear 51 drives the driven bevel gear 52 to rotate, thereby causing the screw 47 to rotate. The rotation of the screw 47 causes the slider 46 to slide along the generatrix of the outer wall of the mounting bucket 4, thereby causing the push rod 45 to slide along the generatrix of the outer wall of the mounting bucket 4, causing the blower 44 to rotate around the hinge point, which facilitates the adjustment of the blowing angle.

[0080] When the angle of the high-pressure nozzle 21 needs to be adjusted, the output shaft of the drive servo motor 35 rotates, which drives the drive bevel gear 36 to rotate, which in turn drives the butterfly bevel gear 33 to rotate around the center. This causes the drive component 32 to move outward along the radial direction of the butterfly bevel gear 33, which in turn causes the end of the high-pressure nozzle 21 away from the drive component 32 to move around the hinge point towards the central axis of the mounting cylinder 2. The drive component 32 moves inward along the radial direction of the butterfly bevel gear 33, which in turn causes the end of the high-pressure nozzle 21 away from the drive component 32 to move around the hinge point towards the central axis of the mounting cylinder 2. This facilitates the adjustment of the spray angle of the high-pressure nozzle 21.

[0081] In summary, the dust concentration detection device 612 provides real-time feedback on the dust handling status to the controller. Based on the dust handling status, it can automatically adjust the distance between the mounting cylinder 2 and the nozzle 12, the angle of the high-pressure nozzle 21, and the angle of the blowing component 44. This allows for automatic adjustment of the angles of the high-pressure nozzle 21 and the blowing component 44 according to different operating scenarios, forming vortex-shaped water mists of different sizes to better encapsulate and absorb the dust, thereby improving the dust suppression effect.

[0082] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tunneling machine equipped with a water-saving dust suppression device, characterized in that: include: The tunneling machine body (1) includes a lifting arm (11), and a gun head (12) is provided at the end of the lifting arm (11); The mounting cylinder (2) is slidably connected to the lifting arm (11) near the gun head (12) and slides along the length of the lifting arm (11); Drive mechanism 1 is located on the side of the lifting arm (11) and is used to drive the installation cylinder (2) to move; The mounting rod (31) is hinged to the side wall of the mounting cylinder (2) near the gun head (12). A high-pressure nozzle (21) is inserted into one end of the mounting rod (31) near the gun head (12). The high-pressure nozzle (21) is used to spray water outward. The mounting rod (31) is distributed along the circumference of the mounting cylinder (2). Drive mechanism two is set on the side of the mounting cylinder (2) and is used to drive the mounting rod (31) to rotate around the hinge point; the drive mechanism two includes: a butterfly bevel gear (33), which is sleeved on the outer wall of the mounting cylinder (2) and has a flat thread (331) on its side; a drive member (32), one end of which is hinged to the mounting rod (31) and the other end of which meshes with the side of the butterfly bevel gear (33) with the flat thread (331), the drive member (32) moves radially along the butterfly bevel gear (33); a drive bevel gear (36), which meshes with the butterfly bevel gear (33), and the end of the drive bevel gear (36) is connected to a drive servo motor (35), the drive servo motor (35) is used to drive the drive bevel gear (36) to rotate; The mounting bucket (4) is located at one end of the mounting cylinder (2) near the gun head (12) and is detachably connected to the mounting cylinder (2); The blower (44) is hinged to the side wall of the mounting bucket (4). The blower (44) has an air outlet (441) at one end near the gun head (12). When in use, the airflow blows out from the air outlet, causing the water jet from the high-pressure nozzle (21) to form a vortex that wraps around the gun head (12). Drive mechanism three is set on the outer wall of the mounting bucket (4) and is used to drive the blower (44) to rotate around the hinge point. Drive mechanism three includes: push rod (45), which extends along the generatrix of the outer wall of the mounting bucket (4) in the length direction. The mounting rod (31) moves along its own length direction and is hinged to the blower (44) at its end; slider (46), which is fixedly connected to push rod (45) and slides along the outer wall of the mounting bucket (4); screw (47), which is axially parallel to the generatrix of the outer wall of the mounting bucket (4) and is threadedly engaged with slider (46); rotating assembly (5), which is used to drive screw (47) to rotate. Rotating assembly (5) includes: intermediate bevel gear (51), which is rotatably connected to the end of the mounting bucket (4) and is coaxially arranged with the mounting bucket (4); driven bevel gear (52), which meshes with intermediate bevel gear (51) and is fixedly set at the end of screw (47). A dust cover (6) is installed outside the mounting cylinder (2), and a dust concentration detection device (612) is installed at the end of the dust cover (6); The controller is used to make a judgment based on the data obtained from the dust concentration detection device (612) and to send control signals to drive mechanism one, drive mechanism two and drive mechanism three based on the judgment.

2. A tunneling machine with a water-saving dust suppression device according to claim 1, characterized in that: The drive mechanism includes a push hydraulic cylinder (23), which is fixed to the side wall of the lifting arm (11) and its piston rod extends along the length of the lifting arm (11). The end of the piston rod of the push hydraulic cylinder (23) is connected to the end of the mounting cylinder (2) away from the gun head (12).

3. A tunneling machine with a water-saving dust suppression device according to claim 2, characterized in that: The inner wall of the mounting cylinder (2) is provided with a sliding plate (22), which extends along the axial direction of the mounting cylinder (2); The lifting arm (11) is fixed with a sliding groove (111) corresponding to the sliding trajectory of the mounting cylinder (2), and the length direction of the sliding groove (111) extends along the length direction of the lifting arm (11). The sliding plate (22) slides along the length of the sliding groove (111).

4. A tunneling machine with a water-saving dust suppression device according to claim 3, characterized in that: The sliding plate (22) slides radially along the mounting cylinder (2) so that the end of the sliding plate (22) is inserted into or disengaged from the sliding groove (111) on the lifting arm (11); The sliding plate (22) is threaded with a bolt (222) at one end away from the sliding groove (111), and the end of the bolt (222) is threaded with the side wall of the mounting cylinder (2). The piston rod end of the hydraulic cylinder (23) is detachably connected to the end of the mounting cylinder (2).

5. A tunneling machine with a water-saving dust suppression device according to claim 1, characterized in that: The rotating assembly (5) includes: The drive bevel gear (53) meshes with the side wall of the intermediate bevel gear (51), and a drive motor (54) is connected in the middle. The drive motor (54) is used to drive the drive bevel gear (53) to rotate.

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