Spraying and dust-settling device of coal mining machine

Abstract

The invention provides a coal mining machine spraying and dust falling device. The coal mining machine spraying and dust falling device comprises a U-shaped rack and a spraying pipe body arranged in an opening of the U-shaped rack. A sliding block is arranged on the spraying pipe body, and a sliding groove in sliding fit with the sliding block is formed in the U-shaped rack. A first positioning hole is formed in the side face of the sliding block, a second positioning hole corresponding to the first positioning hole is formed in the U-shaped rack, and an inner groove communicated with the second positioning hole is formed in the U-shaped rack. A locking mechanism is arranged in the inner groove and comprises a screw rod, a transmission block in threaded fit with the screw rod and a locking column driven by the transmission block, and the screw rod is rotationally arranged in the inner groove. The locking column has a first pose and a second pose; in the first posture, the locking column is arranged in the second positioning hole and the first positioning hole in a penetrating mode at the same time. And in the second posture, the locking column retracts into the second positioning hole and is separated from the first positioning hole. The locking column is driven by the transmission block to be switched between the first pose and the second pose. According to the invention, the spray pipe body can be quickly dismounted and reliably locked.

Description

Technical Field

[0001] This application relates to the field of coal mining machinery technology, and in particular to a coal mining machine spray dust suppression device. Background Technology

[0002] In underground coal mining operations, dust control is a core aspect of ensuring safe production and protecting the occupational health of workers. Coal mining machines, as the primary dust source, generate high concentrations of inhalable coal dust during their cutting operations. This not only significantly reduces visibility and affects equipment monitoring, but long-term inhalation can also lead to pneumoconiosis and, under certain conditions, pose an explosion risk. Therefore, effectively suppressing dust dispersion during coal mining machine operations is crucial for comprehensive dust control in mines.

[0003] Currently, common dust suppression spray devices for coal mining machines typically include a U-shaped frame and a spray pipe installed within its opening. The spray pipe is initially installed by sliding it against a slider fixed to it and engaging with a groove on the U-shaped frame. Final fixation is generally achieved using bolt connections; that is, the spray pipe is secured to the U-shaped frame by tightening bolts that pass through the U-shaped frame and are screwed into the threaded holes of the spray pipe or slider.

[0004] However, the existing method of using bolts for fastening has obvious drawbacks: in the confined space and under limited lighting of underground coal mines, operators need to use special tools to tighten or loosen multiple bolts one by one. The operation is cumbersome and time-consuming. Moreover, the space required for tool operation often conflicts with the harsh underground environment, making the replacement, maintenance or cleaning of the entire spray pipe extremely inconvenient and inefficient, and failing to meet the actual needs of underground coal mines for quick equipment maintenance. Summary of the Invention

[0005] This application provides a coal mining machine spray dust suppression device to solve the technical problems of existing spray dust suppression devices being cumbersome, time-consuming, labor-intensive, and inefficient in narrow underground spaces due to the use of bolt fastening.

[0006] To achieve the above objectives, this application provides a coal mining machine spray dust suppression device, comprising:

[0007] U-shaped frame;

[0008] The opening of the U-shaped frame is equipped with a spray pipe;

[0009] The spray pipe body is equipped with a slider; the U-shaped frame is equipped with a sliding groove that slides with the slider; a first positioning hole is provided on the side of the slider; a second positioning hole corresponding to the first positioning hole is provided on the U-shaped frame; and an inner groove communicating with the second positioning hole is also provided inside the U-shaped frame.

[0010] A locking mechanism is provided in the inner groove;

[0011] The locking mechanism includes a screw, a transmission block that is threadedly engaged with the screw, and a locking pin driven by the transmission block; the screw is rotatably disposed in the inner groove, and the locking pin is coaxially disposed with the second positioning hole and the first positioning hole;

[0012] The locking post has a first position and a second position;

[0013] In the first position, the locking pin is simultaneously inserted into the second positioning hole and the first positioning hole;

[0014] In the second position, the locking pin retracts into the second positioning hole and disengages from the first positioning hole;

[0015] The locking pin switches between the first and second positions under the drive of the transmission block.

[0016] Preferably, the locking mechanism further includes a limiting groove formed on the side wall of the inner groove and a limiting block that is fixedly connected to the transmission block and slides in cooperation with the limiting groove.

[0017] Preferably, an operating wheel is fixedly provided at one end of the screw that extends out of the inner groove.

[0018] Preferably, it also includes a positioning component;

[0019] The positioning components include:

[0020] Magnetic suction device fixedly mounted on the U-shaped frame;

[0021] An iron ring is fitted onto the screw, and the iron ring and the magnetic attracting component are arranged opposite each other, and the iron ring and the magnetic attracting component can be magnetically attracted separately;

[0022] Connecting rod; one end of the connecting rod is connected to an iron ring; the other end of the connecting rod is connected to a fixing ring, and the fixing ring is fitted onto the operating wheel;

[0023] A pull rod is connected to the side of the fixed ring away from the connecting rod; the end of the pull rod away from the fixed ring passes through the operating wheel, and a lifting block is connected to the part of the pull rod that passes through the operating wheel;

[0024] A spring is fitted onto the pull rod, with its two ends abutting against the operating wheel and the retaining ring, respectively.

[0025] Preferably, the slider is provided with a guide pulley, and the U-shaped frame is provided with a guide groove that communicates with the slide groove, and the guide pulley and the guide groove are in rolling cooperation.

[0026] Preferably, a spray nozzle is provided on the side of the spray pipe facing the opening of the U-shaped frame, and multiple spray nozzles are provided.

[0027] Preferably, the spray pipe is also provided with a pipe interface, which is connected to an external water source.

[0028] Preferably, the U-shaped frame has a mounting surface, which is positioned opposite to the opening of the U-shaped frame; the mounting surface is fixedly provided with two connecting bolts for mounting the U-shaped frame to the coal mining machine.

[0029] Preferably, the outer peripheral wall of the operating wheel is provided with anti-slip texture.

[0030] Preferably, the lifting block is provided with a groove for easy operation.

[0031] As can be seen from the above technical solution, this application provides a coal mining machine spray dust suppression device, the device comprising: a U-shaped frame; a spray pipe body disposed within the opening of the U-shaped frame; a slider disposed on the spray pipe body and a sliding groove disposed on the U-shaped frame and slidingly engaging with the slider; a first positioning hole disposed on the side of the slider and a second positioning hole disposed on the U-shaped frame and corresponding to the first positioning hole; an inner groove disposed within the U-shaped frame and communicating with the second positioning hole; and a locking mechanism disposed within the inner groove. The locking mechanism comprises a screw, a transmission block threadedly engaging with the screw, and a locking pin driven by the transmission block. The screw is rotatably disposed in the inner groove, and the locking pin is coaxially disposed with the second positioning hole and the first positioning hole. The locking pin has a first position and a second position: in the first position, the locking pin simultaneously passes through the second positioning hole and the first positioning hole; in the second position, the locking pin retracts into the second positioning hole and disengages from the first positioning hole. The locking pin switches between the first position and the second position under the drive of the transmission block. Attached Figure Description

[0032] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the coal mining machine spray dust suppression device provided in the embodiments of this application;

[0034] Figure 2 This is a schematic diagram of the main structure of the coal mining machine spray dust suppression device provided in the embodiments of this application;

[0035] Figure 3 This is a schematic diagram of the spray pipe body and multiple spray nozzles of the coal mining machine spray dust suppression device provided in the embodiments of this application;

[0036] Figure 4 Examples of this application Figure 2 A magnified detailed schematic diagram of part A (locking mechanism and positioning component);

[0037] Figure 5A partial cross-sectional view of the locking column of the coal mining machine spray dust suppression device provided in the embodiment of this application in the first position (locked state);

[0038] Figure 6 A partial cross-sectional view of the locking column of the coal mining machine spray dust suppression device provided in the embodiment of this application in the second pose (unlocked state);

[0039] Figure 7 This is a schematic diagram of the assembly and cooperation structure of the slider and guide pulley of the coal mining machine spray dust suppression device provided in the embodiments of this application.

[0040] Illustration:

[0041] The components include: 1. U-shaped frame; 11. Slide groove; 12. Second positioning hole; 13. Guide groove; 14. Connecting bolt; 2. Spray pipe body; 21. Slider; 211. First positioning hole; 212. Guide pulley; 22. Spray nozzle; 23. Pipe interface; 3. Locking mechanism; 31. Screw; 32. Transmission block; 33. Locking post; 34. Limit groove; 35. Limit block; 36. Operating wheel; 4. Positioning assembly; 41. Magnetic suction component; 42. Iron ring; 43. Connecting rod; 44. Fixing ring; 45. Pull rod; 46. Lifting block; 47. Spring. Detailed Implementation

[0042] The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application.

[0043] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0044] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0045] In the field of dust suppression spray technology for coal mining machines, existing devices for fixing spray pipes often use bolt connections, which are cumbersome to install and remove and are inefficient. These devices typically use a sliding guide on a U-shaped frame and a slider on the spray pipe for sliding guidance, and then use multiple bolts to secure the slider to the frame. In the narrow, dimly lit spaces of underground coal mines, operators must use tools to tighten or loosen the bolts one by one, a complicated and time-consuming process. The limited space also restricts tool operation, making the maintenance, replacement, or cleaning of the spray pipes extremely inconvenient and failing to meet the demands of efficient underground operations.

[0046] To address the aforementioned problems, this application provides a coal mining machine spray dust suppression device, see [link to relevant documentation]. Figures 1-6 The device includes a U-shaped frame 1, a spray pipe body 2, a slider 21, a slide groove 11, a first positioning hole 211, a second positioning hole 12, an inner groove, a locking mechanism 3, a screw 31, a transmission block 32, and a locking pin 33.

[0047] The U-shaped frame 1 is the main body for installing and supporting the device. The cross-sectional shape of the U-shaped frame 1 is U-shaped, forming a three-sided enclosed and one-sided open space. The spray pipe 2 is arranged within the U-shaped space of the U-shaped frame 1. The spray pipe 2 is a hollow pipe used to transport water. A slider 21 is fixedly connected to the outer wall of the spray pipe 2. The slider 21 is a metal block, and the connection between the slider 21 and the spray pipe 2 is fixed.

[0048] The U-shaped frame 1 is provided with a sliding groove 11. The sliding groove 11 is a straight-extending groove formed on the inner wall of the side plate of the U-shaped frame 1. The slider 21 is slidably engaged with the sliding groove 11. When the spray tube 2 is placed into the U-shaped frame 1, the slider 21 is embedded in the sliding groove 11 and can slide along the extension direction of the sliding groove 11. By sliding the slider 21 in the sliding groove 11, the spray tube 2 can be loaded or unloaded relative to the U-shaped frame 1.

[0049] The slider 21 has a first positioning hole 211 on its side, which is a circular hole. The U-shaped frame 1 has a second positioning hole 12, which is also a circular hole. The position of the second positioning hole 12 corresponds to the position of the first positioning hole 211. When the operator pushes the spray pipe 2 along the slide 11 to the predetermined installation position, the slider 21 stops sliding, and at this time, the central axis of the first positioning hole 211 on the slider 21 coincides with the central axis of the second positioning hole 12 on the U-shaped frame 1.

[0050] The U-shaped frame 1 is also provided with an inner groove, which is a cavity located inside the U-shaped frame 1. The inner groove is connected to the second positioning hole 12.

[0051] The inner groove is equipped with a locking mechanism 3. The locking mechanism 3 includes a screw 31, a transmission block 32, and a locking pin 33. The screw 31 is a metal rod with external threads. The screw 31 is rotatably mounted in the inner groove, and its two ends are supported on the side walls of the inner groove by bearings or bushings, allowing the screw 31 to rotate around its own axis. The transmission block 32 is a metal block with internal threads machined inside. The transmission block 32 achieves a threaded connection with the screw 31 by engaging its internal threads with the external threads of the screw 31. The locking pin 33 is a metal rod driven by the transmission block 32. One end of the locking pin 33 is fixedly connected to the transmission block 32. The central axis of the locking pin 33 is parallel to the central axis of the screw 31. The locking pin 33 is coaxially arranged with the second positioning hole 12 and the first positioning hole 211.

[0052] It should be noted that when the device is in operation, the operator first installs the spray pipe 2. The operator holds the spray pipe 2 and aligns the slider 21 fixed to the spray pipe 2 with the inlet of the groove 11 on the U-shaped frame 1. The spray pipe 2 is then pushed into the U-shaped frame 1 along the direction of the groove 11. The slider 21 slides within the groove 11, guiding the spray pipe 2. When the spray pipe 2 is pushed into place, the slider 21 stops moving, and the first positioning hole 211 on the slider 21 aligns with the second positioning hole 12 on the U-shaped frame 1.

[0053] Subsequently, the operator rotates the screw 31. The screw 31 rotates within the inner groove. Since the transmission block 32 and the screw 31 are threadedly engaged, the rotation of the screw 31 drives the transmission block 32 to move linearly along the axis of the screw 31. The direction of movement of the transmission block 32 is towards the slider 21. The transmission block 32 drives the locking pin 33 to move linearly as well. The locking pin 33 extends from the inner groove toward the second positioning hole 12. The locking pin 33 first passes through the second positioning hole 12 on the U-shaped frame 1. Since the second positioning hole 12 is now aligned with the first positioning hole 211, the locking pin 33 continues to move forward linearly, inserting into the first positioning hole 211 on the slider 21. When the locking pin 33 is inserted into the first positioning hole 211 to a certain depth, the locking pin 33 is simultaneously positioned within both the second positioning hole 12 and the first positioning hole 211. This state is the first position of the locking pin 33. In this position, the locking post 33 blocks the sliding path of the slider 21 along the slide groove 11, thereby locking the spray tube body 2 inside the U-shaped frame 1.

[0054] When the spray pipe body 2 needs to be disassembled for maintenance, the operator rotates the screw 31 in the opposite direction. The reverse rotation of the screw 31 drives the transmission block 32 to move linearly away from the slider 21. The transmission block 32 pulls the locking pin 33 back into the inner groove of the U-shaped frame 1. The retraction of the locking pin 33 causes it to exit from the first positioning hole 211 of the slider 21. When the front end of the locking pin 33 is completely disengaged from the first positioning hole 211 of the slider 21, the locking pin 33 is separated from the first positioning hole 211. At this time, the locking pin 33 no longer obstructs the slider 21, and the slider 21 and the spray pipe body 2 are in a state of free sliding. The second position of the locking pin 33 is when it is disengaged from the first positioning hole 211 and the front end of the locking pin 33 is located in the second positioning hole 12 or has been retracted into the inner groove. After the lock is released, the operator can pull the spray pipe body 2 out of the U-shaped frame 1 along the slide groove 11. During the pulling process, the slider 21 slides freely in the groove 11 until the spray pipe body 2 is completely separated from the U-shaped frame 1.

[0055] As can be seen from the above technical solution, the coal mining machine spray dust suppression device provided in this embodiment achieves the guidance and initial positioning of the spray pipe body 2 through the cooperation of the slider 21 and the slide groove 11. By rotating the screw 31 to drive the transmission block 32, and then the transmission block 32 drives the locking pin 33 to move linearly, so as to realize the insertion or withdrawal of the locking pin 33 into the first positioning hole 211 and the second positioning hole 12, thereby completing the mechanical locking and release of the spray pipe body 2. This device transforms the multiple, discrete screwing operations required for traditional multiple bolt connections into a continuous action of pushing in the slider and rotating the screw. The operation process is simplified and easy to implement in the narrow space underground. The efficiency of assembling and disassembling the spray pipe body 2 is improved.

[0056] In some embodiments, see Figure 4 The locking mechanism 3 also includes a limit groove 34 and a limit block 35.

[0057] Specifically, a limiting groove 34 is formed on the side wall of the inner groove. The limiting groove 34 is a straight extending groove, and the extending direction of the limiting groove 34 is parallel to the axis of the screw 31. The limiting block 35 is a metal block. The limiting block 35 is fixedly connected to the transmission block 32. The limiting block 35 is disposed inside the limiting groove 34, and the limiting block 35 slides in conjunction with the limiting groove 34. The limiting block 35 can slide within the limiting groove 34 along the extending direction of the limiting groove 34.

[0058] It is worth noting that during actual operation, when the screw 31 rotates and drives the transmission block 32 to move, the transmission block 32 will also drive the limiting block 35, which is fixedly connected to it, to move together. Since the limiting block 35 is confined within the internal space of the limiting groove 34, it can only slide linearly within the groove. The groove wall of the limiting groove 34 prevents the limiting block 35 from rotating circumferentially. Because the limiting block 35 and the transmission block 32 are fixedly connected, the inability of the limiting block 35 to rotate means that the transmission block 32 also cannot rotate. The transmission block 32 retains only one degree of freedom: linear movement along the axis of the screw 31. This structure ensures that the rotational motion of the screw 31 can be converted into linear motion of the transmission block 32 and the locking pin 33, preventing accidental deflection or jamming of the transmission block 32 due to force or vibration.

[0059] This embodiment adds an anti-rotation structure consisting of a limiting groove 34 and a limiting block 35 to the locking mechanism 3, thereby constraining the movement of the transmission block 32 along the transmission path. This structure limits the movement trajectory of the transmission block 32, thus improving the consistency of the position of the locking pin 33 during the extension locking and retraction unlocking processes. This enhances the reliability and durability of the entire locking mechanism 3 under complex downhole conditions.

[0060] In some embodiments, see Figure 4 An operating wheel 36 is fixedly installed at one end of the screw 31 that extends out of the inner groove.

[0061] The operating wheel 36 is a disc-shaped or spoke-shaped component. The center of the operating wheel 36 is fixedly connected to the end of the screw 31 by means of key connection, interference fit, or welding. When the operating wheel 36 is rotated, it drives the screw 31 to rotate synchronously.

[0062] In some embodiments, see Figure 4 The dust suppression spray device for the coal mining machine also includes a positioning component 4. The positioning component 4 includes a magnetic suction element 41, an iron ring 42, a connecting rod 43, a fixing ring 44, a pull rod 45, a lifting block 46, and a spring 47.

[0063] The magnetic chuck 41 is fixedly mounted on the U-shaped frame 1. The magnetic chuck 41 is typically a permanent magnet. An iron ring 42 is fitted onto the screw 31. The iron ring 42 is made of a magnetically conductive material. The iron ring 42 and the magnetic chuck 41 are axially opposite each other. A magnetic force is generated between the iron ring 42 and the magnetic chuck 41, allowing them to magnetically engage in a separable manner. One end of a connecting rod 43 is connected to the iron ring 42. There are typically two connecting rods 43, symmetrically arranged on both sides of the iron ring 42. The other end of the connecting rod 43 is connected to a fixing ring 44. The fixing ring 44 is a circular ring-shaped part. The fixing ring 44 is fitted onto the operating wheel 36. The inner diameter of the fixing ring 44 is larger than the diameter of the screw 31 at the center of the operating wheel 36, allowing the fixing ring 44 to slide axially relative to the screw 31 and the operating wheel 36, but it will rotate with the screw 31. A pull rod 45 is connected to the fixed ring 44 on the side away from the connecting rod 43. The pull rod 45 is a straight rod, and its axis is parallel to or coincides with the axis of the screw 31. The end of the pull rod 45 away from the fixed ring 44 passes through the operating wheel 36. The operating wheel 36 has a through hole for the pull rod 45 to pass through. A lifting block 46 is connected to the part of the pull rod 45 that passes through the operating wheel 36. The lifting block 46 is fixed to the end of the pull rod 45. A spring 47 is sleeved on the pull rod 45. The spring 47 is located between the operating wheel 36 and the fixed ring 44. One end of the spring 47 abuts against the operating wheel 36, and the other end of the spring 47 abuts against the fixed ring 44.

[0064] Specifically, during actual operation, when the operator rotates the operating wheel 36 and locks the spray pipe body 2, the positioning component 4 plays an anti-loosening role.

[0065] After the locking process is completed, the iron ring 42, which is sleeved on the screw 31, is in an axial position directly opposite the magnetic suction member 41. At this time, under the elastic force of the spring 47, the spring 47 pushes the fixing ring 44, which in turn pushes the iron ring 42 through the connecting rod 43, so that the iron ring 42 is tightly attracted to the magnetic suction member 41 fixed on the U-shaped frame 1. Since the fixing ring 44 is sleeved on the operating wheel 36, and the operating wheel 36 is fixed on the screw 31, the fixing ring 44 and the iron ring 42, which are fixedly connected by the connecting rod 43, will move synchronously in the circumferential direction with the screw 31 and the operating wheel 36. Based on this synchronous movement relationship, when the iron ring 42 is attracted and fixed by the magnetic suction member 41, the operating wheel 36 and the screw 31 are constrained in the direction of rotation, making it difficult for them to rotate in the opposite direction. This state effectively prevents the screw 31 from loosening due to the vibration of the coal mining machine, thereby maintaining the first position of the locking pin 33, which is simultaneously inserted into the second positioning hole 12 and the first positioning hole 211.

[0066] When the operator needs to disassemble the spray pipe body 2, the anti-loosening lock of the positioning component 4 must be released first. The operator pulls the lifting block 46 by hand. The lifting block 46 drives the pull rod 45 to move axially. The pull rod 45 pulls the fixing ring 44 towards the operating wheel 36. The movement of the fixing ring 44 compresses the spring 47 located between it and the operating wheel 36. At the same time, the fixing ring 44 pulls the iron ring 42 through the connecting rod 43, so that the iron ring 42 overcomes the magnetic force of the magnetic suction member 41 and completely separates from the magnetic suction member 41. After the iron ring 42 is completely separated from the magnetic suction member 41, the operating wheel 36 and the screw 31 are no longer constrained by the magnetic suction member 41 in the direction of rotation. At this time, the operator can rotate the operating wheel 36 in the opposite direction, driving the locking pin 33 of the locking mechanism 3 to retract into the second positioning hole 12 and disengage from the first positioning hole 211, thus releasing the mechanical lock on the spray pipe body 2.

[0067] This embodiment adds a positioning assembly 4, consisting of a magnetic suction element 41, an iron ring 42, a connecting rod 43, a fixing ring 44, a pull rod 45, a lifting block 46, and a spring 47, to provide a vibration-resistant anti-loosening function for the locking mechanism 3. After locking, this assembly automatically locks the operating wheel 36 using magnetic attraction and spring force, preventing it from reversing due to vibration. When operation is required, this lock can be released with a simple pulling action. This enhances the reliability of the device in continuous vibration environments downhole and reduces maintenance requirements.

[0068] In some embodiments, see Figure 6 and Figure 7 The slider 21 is equipped with a guide pulley 212. The U-shaped frame 1 is provided with a guide groove 13.

[0069] The guide pulley 212 is a wheel that can rotate freely around its own axis. The guide pulley 212 is mounted on the slider 21 via a bracket or axle.

[0070] A guide groove 13 is formed on the U-shaped frame 1. The guide groove 13 is connected to the slide groove 11. The guide groove 13 is a long and narrow groove, and its extension direction is the same as that of the slide groove 11. The rim of the guide pulley 212 is embedded in the guide groove 13. It should be noted that during actual operation, when the spray pipe 2 is installed or removed, the slider 21 slides in the slide groove 11, while the guide pulley 212 mounted on the slider 21 rolls in the guide groove 13. The contact between the guide pulley 212 and the groove wall of the guide groove 13 is a rolling contact. This design transforms the sliding friction that may occur between the slider 21 and the U-shaped frame 1 into the rolling friction of the guide pulley 212 in the guide groove 13.

[0071] This embodiment significantly reduces the moving resistance experienced by the spray pipe 2 during pushing in and pulling out by setting a rolling guide assembly consisting of a guide pulley 212 and a guide groove 13 between the slider 21 and the U-shaped frame 1. This makes the operation more effortless and smoother, especially in dusty and corrosive environments downhole, effectively reducing jamming caused by increased friction and improving the smoothness and feel of the disassembly and assembly operations.

[0072] In some embodiments, see Figure 3 A spray nozzle 22 is provided on the side of the spray pipe body 2 facing the opening of the U-shaped frame 1. Multiple spray nozzles 22 are provided.

[0073] Specifically, the spray nozzle 22 is the component that generates water mist. Multiple spray nozzles 22 are arranged at intervals along the length of the spray pipe body 2. The spray nozzles 22 are fixed to the pipe wall of the spray pipe body 2 by means of threaded connection or welding.

[0074] It should be noted that during actual operation, water from an external water source flows through the spray pipe body 2 and is simultaneously sprayed from multiple spray nozzles 22. Because the spray nozzles 22 are oriented towards the openings of the U-shaped frame 1, the sprayed water mist directly covers the dust-generating area in front of the coal mining machine's cutting mechanism. The arrangement of multiple spray nozzles 22 expands the coverage width and density of the water mist.

[0075] This embodiment ensures the effective execution of the dust suppression function by clearly defining the setting of the spray nozzles 22. The orientation of the opening ensures that the spray direction is consistent with the area requiring dust suppression. Setting multiple spray nozzles 22 provides sufficient spray coverage and water mist concentration from a structural perspective, which is a direct technical means to achieve the goal of efficient dust suppression.

[0076] In some embodiments, see Figure 2 The spray pipe body 2 is also equipped with a pipe interface 23.

[0077] Pipe interface 23 is a standard water pipe connector that is connected to one end of the spray pipe body 2. Pipe interface 23 is used to connect to an external water source pipeline.

[0078] Specifically, in actual operation, the outlet of the underground water supply pipeline is connected to the pipe interface 23 on the spray pipe body 2. External water source enters the internal cavity of the spray pipe body 2 through the pipe interface 23, providing a continuous water flow to the spray nozzle 22.

[0079] This embodiment clarifies the connection point between the device and the underground water supply system by setting a pipe interface 23 on the spray pipe body 2. This is the external energy input interface necessary to realize the spray dust suppression function, forming part of the complete working loop.

[0080] In some embodiments, see Figure 2The U-shaped frame 1 has a mounting surface. The mounting surface is positioned opposite to the opening of the U-shaped frame 1.

[0081] Specifically, the mounting surface is a flat surface on the U-shaped frame 1 designed to fit against the body of the coal mining machine. Two connecting bolts 14 are fixedly mounted on the mounting surface. The threaded portion of the connecting bolts 14 extends perpendicularly to the mounting surface.

[0082] During the actual installation process, the operator aligns the mounting surface of the U-shaped frame 1 with the preset installation position on the coal mining machine body. The two connecting bolts 14 are then aligned with the threaded holes on the coal mining machine body. A tool is then used to screw the connecting bolts 14 into the threaded holes until the U-shaped frame 1 is securely fastened to the coal mining machine.

[0083] This embodiment clarifies the installation and fixing method between the entire spray dust suppression device and the main body of the coal mining machine by defining the mounting surface of the U-shaped frame 1 and the connecting bolts 14. This is the basis for the stable operation of the device and ensures the positional stability of the device during the operation of the coal mining machine.

[0084] In some embodiments, the outer peripheral wall of the operating wheel 36 is provided with anti-slip texture. The anti-slip texture is a series of grooves, protrusions or knurled patterns machined on the outer circumferential surface of the operating wheel 36.

[0085] It should be noted that during actual operation, when the operator holds the operating wheel 36 and applies rotational force, their fingers come into contact with the anti-slip texture on the outer peripheral wall of the operating wheel 36. The anti-slip texture increases the friction between the hand and the surface of the operating wheel 36, helping to prevent slippage when forcefully turning it.

[0086] This embodiment improves the force exertion during manual operation by setting anti-slip textures on the operating wheel 36, ensuring that rotational force can be effectively transmitted to the operating wheel 36, thereby enhancing the reliability and efficiency of operation.

[0087] In some embodiments, see Figure 4 The lifting block 46 has a groove.

[0088] Specifically, the groove is an inwardly recessed area machined on the surface of the lifting block 46, the shape of which is adapted to accommodate the fingertip or fingertip.

[0089] It should be noted that during actual operation, when it is necessary to pull the lifting block 46 to operate the positioning component 4, the operator inserts their finger into the groove of the lifting block 46. The groove provides a clear position and space for the finger to apply force, making the pulling action easier to apply force and less likely to slip.

[0090] This embodiment further optimizes the operating components of the positioning assembly 4 by providing a groove on the lifting block 46. This design makes the pulling action in the unlocked and anti-loosening state more effortless, improving the user-friendliness and convenience of operation.

[0091] Similar parts between the embodiments provided in this application can be referred to mutually. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods extended from the solution of this application without creative effort shall fall within the scope of protection of this application.

Claims

1. A dust suppression spray device for a coal mining machine, characterized in that, include: U-shaped frame (1); The opening of the U-shaped frame (1) is provided with a spray pipe (2); The spray pipe body (2) is provided with a slider (21); the U-shaped frame (1) is provided with a sliding groove (11) that slides with the slider (21); a first positioning hole (211) is provided on the side of the slider (21); a second positioning hole (12) corresponding to the first positioning hole (211) is provided on the U-shaped frame (1); the U-shaped frame (1) is also provided with an inner groove that communicates with the second positioning hole (12); A locking mechanism (3) is provided in the inner groove; The locking mechanism (3) includes a screw (31), a transmission block (32) threadedly engaged with the screw (31), and a locking pin (33) driven by the transmission block (32); the screw (31) is rotatably disposed in the inner groove, and the locking pin (33) is coaxially disposed with the second positioning hole (12) and the first positioning hole (211); The locking post (33) has a first position and a second position; In the first position, the locking pin (33) is simultaneously inserted into the second positioning hole (12) and the first positioning hole (211); In the second position, the locking pin (33) retracts into the second positioning hole (12) and disengages from the first positioning hole (211); The locking pin (33) switches between the first position and the second position under the drive of the transmission block (32).

2. The coal mining machine spray dust suppression device according to claim 1, characterized in that, The locking mechanism (3) further includes a limiting groove (34) formed on the side wall of the inner groove and a limiting block (35) fixedly connected to the transmission block (32) and slidingly engaged with the limiting groove (34).

3. The coal mining machine spray dust suppression device according to claim 1, characterized in that, An operating wheel (36) is fixedly installed at one end of the screw (31) that extends out of the inner groove.

4. The coal mining machine spray dust suppression device according to claim 3, characterized in that, It also includes a positioning component (4); the positioning component (4) includes: A magnetic suction element (41) is fixedly installed on the U-shaped frame (1); An iron ring (42) is sleeved on the screw (31), the iron ring (42) is arranged opposite to the magnetic attracting member (41), and the iron ring (42) and the magnetic attracting member (41) are magnetically attracted in a separable manner; Connecting rod (43); one end of the connecting rod (43) is connected to the iron ring (42); the other end of the connecting rod (43) is connected to a fixing ring (44), and the fixing ring (44) is sleeved on the operating wheel (36); A pull rod (45) is connected to the side of the fixed ring (44) away from the connecting rod (43); the end of the pull rod (45) away from the fixed ring (44) passes through the operating wheel (36), and the part of the pull rod (45) passing through the operating wheel (36) is connected to a lifting block (46); A spring (47) is sleeved on the pull rod (45), and the two ends of the spring (47) abut against the operating wheel (36) and the fixing ring (44) respectively.

5. The coal mining machine spray dust suppression device according to claim 1, characterized in that, The slider (21) is provided with a guide pulley (212), and the U-shaped frame (1) is provided with a guide groove (13) that communicates with the slide groove (11). The guide pulley (212) and the guide groove (13) are in rolling cooperation.

6. The coal mining machine spray dust suppression device according to claim 1, characterized in that, The spray pipe body (2) is provided with a spray nozzle (22) on the side facing the opening of the U-shaped frame (1), and there are multiple spray nozzles (22).

7. The coal mining machine spray dust suppression device according to claim 1, characterized in that, The spray pipe body (2) is also provided with a pipe interface (23), which is connected to an external water source.

8. The coal mining machine spray dust suppression device according to claim 1, characterized in that, The U-shaped frame (1) is provided with a mounting surface, which is opposite to the opening of the U-shaped frame (1); the mounting surface is fixedly provided with two connecting bolts (14) for installing the U-shaped frame (1) to the coal mining machine.

9. The coal mining machine spray dust suppression device according to claim 3, characterized in that, The outer peripheral wall of the operating wheel (36) is provided with anti-slip texture.

10. The coal mining machine spray dust suppression device according to claim 4, characterized in that, The lifting block (46) is provided with a groove for easy operation.

Images