Rotatable fog gun for coal mine heading machine

Abstract

The utility model relates to the field of coal mining mechanical equipment, in particular to a rotatable fog gun for a coal mine heading machine, which is provided with an adjusting assembly and a fog gun assembly, the fog gun assembly is provided with a spraying assembly, and the adjusting assembly comprises a first adjusting mechanism and a second adjusting mechanism. The first adjusting mechanism is hinged to the fog gun assembly so as to adjust the opening orientation of the spraying assembly, when a user rotates the second adjusting mechanism, the second adjusting mechanism drives the first adjusting mechanism to circumferentially rotate in the horizontal direction so that the spraying assembly can rotate in the horizontal direction, and through cooperation of the first adjusting mechanism and the second adjusting mechanism, the spraying assembly can rotate in the horizontal direction. Therefore, the spraying assembly can cover a wider area, the dust removal efficiency and the operation effect can be improved, and the problems that when an existing fog gun device is fixed and used through a fixing device, when the dust concentration of a certain area is increased, the orientation of the fog gun device needs to be adjusted again through the fixing device to reduce the dust concentration of the area, and the dust concentration is reduced are effectively solved. And the use is inconvenient.

Description

Technical Field

[0001] The utility model relates to the field of coal mining machinery and equipment, and specifically relates to a rotatable fog cannon for a coal mine roadheader. Background Art

[0002] In coal mining operations, as a key piece of machinery and equipment, a large amount of dust is inevitably generated during the tunneling process of a roadheader. These dusts not only reduce the visibility of the underground working environment, increase the operation difficulty and safety hazards, but also cause long-term damage to the respiratory systems of the operating personnel, thereby threatening their health. Therefore, it is particularly important to effectively reduce the dust generated during the tunneling process, which not only concerns the improvement of the working environment, but also shows responsibility for the physical health of the operating personnel.

[0003] In current underground coal mine operations, a fog cannon device is often used to settle dust. The fog cannon device can increase the humidity in the air to adsorb and settle dust, thereby improving the working environment. However, existing fog cannon devices are often fixed for use through fixing devices. When the dust concentration in a certain area increases, it is necessary to readjust the orientation of the fog cannon device through the fixing device to reduce the dust concentration in that area, which is inconvenient to use.

[0004] The present utility model is studied and proposed in view of the deficiencies of the prior art. Content of the Utility Model

[0005] Aiming at the problem that the existing fog cannon device mentioned above is often fixed for use through a fixing device, and when the dust concentration in a certain area increases, it is necessary to readjust the orientation of the fog cannon device through the fixing device to reduce the dust concentration in that area, and it is inconvenient to use. The technical solution adopted by the present utility model to solve its technical problems is:

[0006] A rotatable fog cannon for a coal mine roadheader, comprising a fog cannon assembly and an adjusting assembly movably connected to the fog cannon assembly. A spraying assembly is provided at the end of the fog cannon assembly. The adjusting assembly includes a first adjusting mechanism hinged to the fog cannon assembly and a second adjusting mechanism rotatably connected to the first adjusting mechanism. When the second adjusting mechanism is rotated, the first adjusting mechanism can rotate relatively to drive the spraying assembly to rotate horizontally.

[0007] Further, the first adjusting mechanism includes a bracket mechanism hinged to the outer side wall of the fog cannon assembly and a height adjusting mechanism. One end of the height adjusting mechanism is connected to the spraying assembly, and the other end is connected to the bracket mechanism.

[0008] Further, the height adjustment mechanism includes a first threaded rod connected to the spray assembly, a second threaded rod connected to the bracket mechanism, and a connection sleeve for connecting the first threaded rod and the second threaded rod. The threads on the first threaded rod and the second threaded rod have opposite helix directions.

[0009] Further, the bracket mechanism includes a movable chassis located on one side close to the second adjustment mechanism. The second adjustment mechanism includes a driving mechanism connected to the movable chassis and a base connected to the driving mechanism. An activity space for the driving mechanism to rotate is provided between the driving mechanism and the base.

[0010] Further, a first mounting hole is provided on the movable chassis, and a second mounting hole corresponding to the first mounting hole is provided on the base. The driving mechanism includes a first driving part connected to the first mounting hole and a second driving part connected to the second mounting hole. The diameter of the first mounting hole is the same as that of the second mounting hole. The diameter of the first driving part is larger than the diameter of the first mounting hole, and the diameter of the second driving part is smaller than the diameter of the first mounting hole.

[0011] Further, the second adjustment mechanism further includes an auxiliary roller assembly located between the movable chassis and the base and connected to the movable chassis.

[0012] Further, the auxiliary roller assembly includes a first universal roller and a second universal roller disposed opposite to the first universal roller.

[0013] Further, an air amplification assembly and an air inlet part for providing external air are provided on the side wall of the fog cannon assembly, and the air inlet part is located on the side far from the spray assembly. The air amplification assembly includes an air inlet hole for connecting an external air compressor and the fog cannon assembly, and a diversion mechanism communicating with the inner cavity of the fog cannon assembly and communicating with the air inlet hole.

[0014] Further, the diversion mechanism includes a diversion cavity wound around the inner wall of the fog cannon assembly along the circumferential direction of the fog cannon assembly, and an annular slit located on the inner wall of the fog cannon assembly and communicating with the diversion cavity. The annular slit is connected to the air inlet hole through the diversion cavity.

[0015] Further, the spray assembly includes a water inlet hole for providing water source and a plurality of high-pressure atomizing nozzles arranged along the circumferential direction of the fog cannon assembly.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. The utility model is provided with an adjusting component movably connected to the fog cannon component. One end of the fog cannon component is provided with a spraying component. The adjusting component includes a first adjusting mechanism and a second adjusting mechanism rotatably connected to the first adjusting mechanism. The first adjusting mechanism is hinged to the fog cannon component, so that the fog cannon component can swing in the vertical direction, thereby adjusting the opening direction of the spraying component. When the user rotates the second adjusting mechanism, the second adjusting mechanism drives the first adjusting mechanism to rotate circumferentially in the horizontal direction, so that the spraying component can rotate in the horizontal direction. Through the cooperation of the first adjusting mechanism and the second adjusting mechanism, the spraying component can cover a wider area, which is beneficial to improving the dust removal efficiency and operation effect, and effectively solves the problem that the existing fog cannon device is often fixed by a fixing device. When the dust concentration in a certain area increases, it is necessary to readjust the orientation of the fog cannon device through the fixing device to reduce the dust concentration in this area, which is inconvenient to use;

[0018] 2. By providing an air amplification component to replace the traditional electric fan, in the special working environment of the coal mine underground, there may be gas. The gas is prone to cause explosion accidents when encountering electric sparks. The air amplification component can avoid the generation of electric sparks and thus effectively prevent the occurrence of explosion accidents, which is beneficial to improving the safety of the operation environment.

[0019] The following will further illustrate the present utility model in conjunction with the drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is one of the structural schematic diagrams of a rotatable fog cannon for a coal mine roadheader of the present utility model;

[0021] Figure 2 is another structural schematic diagram of a rotatable fog cannon for a coal mine roadheader of the present utility model;

[0022] Figure 3 is the third structural schematic diagram of a rotatable fog cannon for a coal mine roadheader of the present utility model;

[0023] Figure 4 is Figure 3 the sectional view along line A-A;

[0024] Figure 5 is the exploded view of a rotatable fog cannon for a coal mine roadheader of the present utility model;

[0025] Figure 6 is the fourth structural schematic diagram of a rotatable fog cannon for a coal mine roadheader of the present utility model;

[0026] Figure 7 is Figure 6 the sectional view along line B-B. Specific embodiments

[0027] The following will make a detailed description of the embodiments of the present utility model in conjunction with the accompanying drawings.

[0028] As Figures 1 to 7 shown, a rotatable fog cannon for a coal mine roadheader includes a fog cannon assembly 1 and an adjustment assembly movably connected to the fog cannon assembly 1. A spraying assembly 3 is provided at the end of the fog cannon assembly 1. The adjustment assembly includes a first adjustment mechanism 4 hinged to the fog cannon assembly 1 and a second adjustment mechanism 5 rotatably connected to the first adjustment mechanism 4. When the second adjustment mechanism 5 is rotated, the first adjustment mechanism 4 can rotate relatively to drive the spraying assembly 3 to rotate horizontally.

[0029] In the present utility model, by providing an adjustment assembly movably connected to the fog cannon assembly, a spraying assembly is provided at one end of the fog cannon assembly. The adjustment assembly includes a first adjustment mechanism and a second adjustment mechanism rotatably connected to the first adjustment mechanism. The first adjustment mechanism is hinged to the fog cannon assembly, so that the fog cannon assembly can swing in the vertical direction, thereby adjusting the opening direction of the spraying assembly. When the user rotates the second adjustment mechanism, the second adjustment mechanism drives the first adjustment mechanism to rotate circumferentially in the horizontal direction, so that the spraying assembly can rotate horizontally. Through the cooperation of the first adjustment mechanism and the second adjustment mechanism, the spraying assembly can cover a wider area, which is beneficial to improving the dust removal efficiency and operation effect, and effectively solves the problem that the existing fog cannon device is often fixed and used through a fixing device. When the dust concentration in a certain area increases, it is necessary to readjust the orientation of the fog cannon device through the fixing device to reduce the dust concentration in this area, which is inconvenient to use.

[0030] As Figures 1 to 7 shown, the first adjustment mechanism 4 includes a bracket mechanism 41 hinged to the outer side wall of the fog cannon assembly 1 and a height adjustment mechanism 42. One end of the height adjustment mechanism 42 is connected to the spraying assembly 3, and the other end is connected to the bracket mechanism 41.

[0031] Furthermore, by providing the bracket mechanism 41 hinged to the outer side wall of the fog cannon assembly 3, a firm support can be provided to ensure the stability and reliability of the spraying assembly 3 during swinging, avoiding shaking or unstable situations, and thus ensuring the stability and accuracy of the dust removal operation.

[0032] Furthermore, by providing the height adjustment mechanism 42 connected to the spraying assembly 3 and the bracket mechanism 41 respectively, the relative height of the spraying assembly 3 can be adjusted, thereby changing the opening direction of the spraying assembly 3, which is beneficial to ensuring the adaptability and accuracy of the spraying angle and range.

[0033] Optionally, in some embodiments, the height adjustment mechanism 42 is a telescopic rod. The telescopic rod is connected to the spray assembly 3 in the vertical direction. When the telescopic rod adjusts its height in the vertical direction, the relative height of the spray assembly 3 changes, so that the opening direction of the spray assembly 3 also changes. The telescopic rod can adopt a telescoping structure, with several connecting components of fixed length connected end to end in sequence. There is a fixing structure between adjacent connecting components, and the fixing structure can be a screw or a clamping part. The user can adjust the height of the telescopic rod in the vertical direction and then fix the height of the telescopic rod with the fixing structure accordingly.

[0034] Preferably, as a preferred embodiment of the present invention rather than a limitation, the height adjustment mechanism 42 includes a first threaded rod 421, a second threaded rod 422, and a connecting sleeve 423 for connecting the first threaded rod 421 and the second threaded rod 422. The inner wall of the connecting sleeve 423 near the first threaded rod 421 is provided with threads having the same helix direction as the first threaded rod 421, and the inner wall of the connecting sleeve 423 near the second threaded rod 422 is provided with threads having the same helix direction as the second threaded rod 422. The threads on the first threaded rod 421 and the second threaded rod 422 have opposite helix directions, so that the first threaded rod 421 and the second threaded rod 422 can move relatively closer or relatively farther away, thereby changing the length of the height adjustment mechanism 42 in the vertical direction, and the relative height of the spray assembly 3 changes, so that the opening direction of the spray assembly 3 also changes.

[0035] As Figures 1 to 7 The height adjustment mechanism 42 shown includes a first threaded rod 421 connected to the spray assembly 3, a second threaded rod 422 connected to the bracket mechanism 41, and a connecting sleeve 423 for connecting the first threaded rod 421 and the second threaded rod 422. The threads on the first threaded rod 421 and the second threaded rod 422 have opposite helix directions;

[0036] Furthermore, by setting the threads on the first threaded rod 421 and the second threaded rod 422 to have opposite helix directions, when the user rotates the connecting sleeve 423, the first threaded rod 421 and the second threaded rod 422 will move in opposite directions, that is, the first threaded rod 421 and the second threaded rod 422 move relatively closer or the first threaded rod 421 and the second threaded rod 422 move relatively farther away, thereby changing the length of the height adjustment mechanism 42 in the vertical direction, and the relative height of the spray assembly 3 changes, so that the opening direction of the spray assembly 3 also changes.

[0037] Furthermore, the threaded connection of the connecting sleeve 423 with the first threaded rod 421 and the second threaded rod 422 respectively can provide a more firm and stable connection, avoiding loosening or unstable height during the operation, which is beneficial to ensuring the reliability and safety of the spray assembly 3 during adjustment.

[0038] Furthermore, the connecting sleeve 423 is threadedly connected to the first threaded rod 421 and the second threaded rod 422 respectively, that is, the height adjustment mechanism 42 is detachably provided. When a certain component in the height adjustment mechanism 42 is damaged, the user can conveniently disassemble and replace the corresponding component, which is beneficial to reducing the maintenance difficulty and cost.

[0039] As Figures 1 to 7 shown, the bracket mechanism 41 includes a movable chassis 411 located near the second adjustment mechanism 5. The second adjustment mechanism 5 includes a driving mechanism 51 connected to the movable chassis 411 and a base 52 connected to the driving mechanism 51. An activity space for the driving mechanism 51 to rotate is provided between the driving mechanism 51 and the base 52;

[0040] Furthermore, by setting the connection between the movable chassis 411 and the driving mechanism 51, the entire bracket mechanism 41 can rotate circumferentially following the driving mechanism 51, thereby driving the spray assembly 3 to rotate circumferentially in the horizontal direction. When the user needs to adjust the angle of the spray assembly 3 in the horizontal direction, just twist the driving mechanism 51 or hold the bracket mechanism 41 to rotate, and the spray assembly 3 rotates accordingly, which is beneficial to improving the practicability and flexibility of the device.

[0041] Furthermore, the activity space is the gap between the driving mechanism 51 and the base 52. The setting of the activity space is beneficial to ensuring that the driving mechanism 51 can rotate, thereby realizing the angle adjustment of the spray assembly 3 in the horizontal direction.

[0042] Furthermore, by setting the base 52, the base 52 can provide stable support for the whole device, preventing the whole device from shaking or tilting due to external force, which is beneficial to ensuring the stable operation of the whole device and the firmness of the structure.

[0043] As Figures 1 to 7 shown, the movable chassis 411 is provided with a first mounting hole 4111, and the base 52 is provided with a second mounting hole 521 corresponding to the first mounting hole 4111. The driving mechanism 51 includes a first driving part 511 connected to the first mounting hole 4111 and a second driving part 512 connected to the second mounting hole 521. The diameter of the first mounting hole 4111 is the same as that of the second mounting hole 521. The diameter of the first driving part 511 is larger than the diameter of the first mounting hole 4111, and the diameter of the second driving part 512 is smaller than the diameter of the first mounting hole 4111;

[0044] Furthermore, the first mounting hole 4111 and the first driving part 511 are in interference fit, so that the first driving part 511 can be fixed more tightly within the first mounting hole 4111, which is beneficial to increasing the firmness and stability of the connection. Secondly, the interference fit can not only improve the firmness of the connection, but also help to enhance the transmission efficiency. When the first driving part 511 rotates under an external force, the interference fit setting can effectively transmit the force, which is beneficial to reducing energy loss, thereby improving the rotation and adjustment effects of the fog cannon assembly 3. Finally, the interference fit can provide a large clamping force, thereby increasing the bearing capacity of the connection part, which helps to ensure the stable operation of the equipment in a harsh environment.

[0045] Optionally, in some embodiments, the driving mechanism 51 is made of stainless steel. Stainless steel is a kind of alloy steel with excellent corrosion resistance, having good strength and toughness, and can withstand large forces and torques.

[0046] Optionally, in some embodiments, the driving mechanism 51 is made of aluminum alloy. Aluminum alloy has the characteristics of light weight and high strength. Secondly, aluminum alloy also has good thermal conductivity and corrosion resistance, which can effectively extend the service life of the device.

[0047] Furthermore, the diameter of the first driving part 511 is larger than that of the first mounting hole 4111, so that the first driving part 511 and the first mounting hole 4111 can be firmly connected. When the first driving part 511 is twisted, the movable chassis 411 rotates accordingly; or when the movable chassis 411 is rotated, the first driving part 511 also rotates accordingly.

[0048] Furthermore, the diameter of the second driving part 512 is smaller than that of the first mounting hole 4111, and the diameters of the first mounting hole 4111 and the second mounting hole 521 are the same, so that there is a gap between the second driving part 512 and the second mounting hole 521, which is beneficial to ensuring that the second driving part 512 can rotate smoothly. Secondly, the second driving part 512 extends into the second mounting hole 521, which can limit the rotation range of the second driving part 512, which is beneficial to ensuring that the second driving part 512 does not exceed the predetermined movement range, which is beneficial to improving the stability of the device.

[0049] As Figures 1 to 7 shown, the second adjusting mechanism 5 further includes an auxiliary roller assembly 53 located between the movable chassis 411 and the base 52 and connected to the movable chassis 411;

[0050] Furthermore, the auxiliary roller assembly 53 provides additional support for the movement of the movable chassis 411 on the base 52, which helps to increase the stability of the entire adjusting mechanism. During the rotation process, the auxiliary roller assembly 53 can effectively prevent the movable chassis 411 from shaking or deviating.

[0051] Furthermore, the provision of the auxiliary roller assembly 53 can effectively reduce the frictional resistance between the movable chassis 411 and the base 52, contributing to the extension of the service life of components and the reduction of energy consumption.

[0052] Furthermore, the auxiliary roller assembly 53 can make the movement between the base 52 and the movable chassis 411 more precise and stable. During the rotation process, with the assistance of the auxiliary roller assembly 53, the angle and direction adjustment of the spray assembly 3 can be more precisely controlled, which is beneficial to improving the accuracy and efficiency of rotation.

[0053] Specifically, the auxiliary roller assembly 53 is a universal roller. The universal roller includes a roller, a mounting seat, and a universal module. The roller is connected to the mounting seat through the universal module. Under the action of the universal module, the roller can rotate circumferentially relative to the mounting seat. The mounting seat is fixedly connected to the movable chassis, and the connection method between the mounting seat and the movable chassis 411 can adopt connection methods such as threaded connection, snap connection, and slot connection.

[0054] As Figures 1 to 7 shown, the auxiliary roller assembly 53 includes a first universal roller 531 and a second universal roller 532 disposed opposite to the first universal roller 531;

[0055] Furthermore, as a preferred embodiment rather than a limitation of the present invention, the number of the auxiliary roller assemblies 53 is two, namely the first universal roller 531 and the second universal roller 532 disposed opposite to the first universal roller 531. By disposing the first universal roller 531 and the second universal roller 532 opposite to each other, a stable support structure can be formed, effectively preventing the movable chassis 411 from shaking or shifting during the rotation process; secondly, when the movable chassis 411 rotates relative to the base 52, the first universal roller 531 and the second universal roller 532 can jointly bear the load, dispersing the pressure borne by a single roller, which is beneficial to improving the service life of the roller and effectively reducing the risk of failure caused by overload.

[0056] Furthermore, the first universal roller 531 and the second universal roller 532 are located on the same straight line, and this straight line coincides with the diameter direction of the driving mechanism 51. Since the first universal roller 531 and the second universal roller 532 are on the same straight line and coincide with the diameter direction of the driving mechanism, the overall structure of the device is more symmetrical and balanced, which can effectively reduce the vibration and instability caused by asymmetry, and is beneficial to improving the operation stability and safety of the equipment.

[0057] As Figures 1 to 7On the side wall of the fog cannon assembly 1 shown, there is an air amplification assembly 6 and an air intake part 7 located on the side away from the spray assembly 3 and used to provide external air. The air amplification assembly 6 includes an air intake hole 61 for connecting an external air compressor and the fog cannon assembly 1, and a diversion mechanism 62 that communicates with the inner cavity of the fog cannon assembly 1 and is connected to the air intake hole 61;

[0058] Furthermore, the air intake part 7 can provide sufficient external air for the inside of the fog cannon assembly 1, and the air amplification assembly 6 can provide strong and stable compressed air for the inside of the fog cannon assembly 1. The external air combines with the compressed air to form a high-speed air flow. Under the action of the high-speed air flow, it helps to enhance the diffusion range and speed of the water mist generated by the spray assembly 3, thereby significantly improving the spray efficiency.

[0059] Furthermore, by setting the air amplification assembly 6 to replace the traditional electric fan, in the special working environment of coal mines, there may be gas. Gas is prone to cause explosion accidents when encountering electric sparks. The air amplification assembly 6 can avoid the generation of electric sparks and thus effectively prevent the occurrence of explosion accidents, which is beneficial to improving the safety of the working environment.

[0060] As Figures 1 to 7 The diversion mechanism 62 shown includes a diversion cavity 621 wound around the inner wall of the fog cannon assembly 1 along the circumferential direction of the fog cannon assembly 1, and an annular slit 622 that communicates with the diversion cavity 621 and is located on the inner wall of the fog cannon assembly 1. The annular slit 622 is connected to the air intake hole 61 through the diversion cavity 621;

[0061] Specifically, one end of the air intake hole 61 is connected to the air compressor, and the other end of the air intake hole 61 communicates with the diversion cavity 621, so that compressed air can be conveyed to the diversion cavity 621. The compressed air enters the inside of the fog cannon assembly 1 through the diversion cavity 621 and moves along the inner wall of the fog cannon assembly 1, forming a negative pressure area inside the fog cannon assembly 1, thereby accelerating the entry of external air into the inside of the fog cannon assembly 1. The external air cooperates with the air in the negative pressure area to form a high-speed air flow, and the high-speed air flow is used to cooperate with the spray assembly 3 to effectively improve the spraying effect of the spray assembly.

[0062] Furthermore, the diversion cavity 621 is wound around the circumferential direction of the fog cannon assembly 1, which is beneficial to avoiding local accumulation or poor flow of compressed air and effectively ensuring the uniformity of the flow of compressed air.

[0063] As Figures 1 to 7 The spray assembly 3 shown includes a water inlet hole 31 for providing water source and a number of high-pressure atomizing nozzles 32 arranged along the circumferential direction of the fog cannon assembly 1;

[0064] Furthermore, the high-pressure atomizing nozzles 32 are arranged circumferentially along the fog cannon assembly 1, which is conducive to ensuring the uniform distribution of the water mist in the circumferential direction, effectively avoiding the occurrence of local concentration or sparseness of the spray, making the spray coverage area more uniform, and being conducive to improving the spray effect.

[0065] Furthermore, the high-pressure atomizing nozzles 32 generate spray through high-pressure injection. As the spray pressure increases, the spray effect becomes more delicate, not only improving the spray coverage range and uniformity, but also enhancing the penetration power of the spray, so that the water mist can better penetrate into the area to be covered.

[0066] The implementation mode of this embodiment is as follows:

[0067] A rotatable fog cannon for a coal mine roadheader, comprising a fog cannon assembly 1 and an adjustment assembly movably connected to the fog cannon assembly 1. A spray assembly 3 is provided at the end of the fog cannon assembly 1. The adjustment assembly includes a first adjustment mechanism 4 and a second adjustment mechanism 5 rotatably connected to the first adjustment mechanism 4. The first adjustment mechanism 4 includes a bracket mechanism 41 hinged to the outer wall of the fog cannon assembly 1 and a height adjustment mechanism 42. The height adjustment mechanism 42 includes a first threaded rod 421 connected to the spray assembly 3, a second threaded rod 422 connected to the bracket mechanism 41, and a connection sleeve 423 for connecting the first threaded rod 421 and the second threaded rod 422. The inner wall of the connection sleeve 423 near the first threaded rod 421 is provided with threads having the same helix direction as the first threaded rod 421, and the inner wall of the connection sleeve 423 near the second threaded rod 422 is provided with threads having the same helix direction as the second threaded rod 422. The threads on the first threaded rod 421 and the second threaded rod 422 have opposite helix directions. The height adjustment mechanism 42 is arranged in the vertical direction. When the user rotates the connection sleeve 423, the first threaded rod 421 and the second threaded rod 422 can move relatively closer or relatively farther away, so as to change the height of the height adjustment mechanism 42 in the vertical direction, and the relative height of the spray assembly 3 changes, so that the opening direction of the spray assembly 3 also changes. The bracket mechanism 41 includes a movable chassis 411, and a first mounting hole 4111 is provided on the movable chassis 411. The second adjustment mechanism 5 includes a driving mechanism 51 and a base 52 connected to the movable chassis 411 through the driving mechanism 51. A second mounting hole 521 having the same diameter as the first mounting hole 4111 is provided on the base 52. The driving mechanism 51 includes a first driving part 511 in interference fit with the first mounting hole 4111 and a second driving part 512 connected to the second mounting hole 521. There is a gap between the second driving part 512 and the second mounting hole 521, so that the second driving part 512 can rotate in the second mounting hole 521. When the user rotates the first driving part 511, the movable chassis 411 rotates circumferentially in the horizontal direction relative to the base 52, so as to drive the spray assembly 3 to rotate circumferentially in the horizontal direction. Through the cooperation of the first adjustment mechanism 4 and the second adjustment mechanism 5, the spray assembly 3 can cover a wider area, which is beneficial to improving the dust removal efficiency and operation effect, and effectively solves the problem that the existing fog cannon device is often fixed and used through a fixing device. When the dust concentration in a certain area increases, it is necessary to readjust the orientation of the fog cannon device through the fixing device to reduce the dust concentration in this area, which is inconvenient to use.An air amplification component 6 is also provided on the side wall of the fog cannon component 1, and an air intake part 7 is located on the side far away from the spray component 3 and is used to provide external air. The air amplification component 6 communicates with the inner cavity of the fog cannon component 1 and can provide strong and stable compressed air. The compressed air forms a negative pressure area in the inner cavity of the fog cannon component 1, accelerating the external air to enter the inner cavity of the fog cannon component 1 through the air intake part 7. The external air combines with the air in the negative pressure area to form a high-speed air flow, providing stable and strong power for the spray component 1. In addition, by setting the air amplification component 6 to replace the traditional electric fan, it is beneficial to reduce the overall weight of the device, effectively reduce noise, and the air amplification component 6 does not require electricity, which is beneficial to preventing the occurrence of explosion accidents caused by gas encountering electric sparks.

[0068] The above only further illustrates the technical content of the present invention with examples to make it easier for readers to understand, but it does not mean that the implementation mode of the present invention is limited to this. Any technical extension or re-creation based on the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. A rotatable fog cannon for a coal mine roadheader, comprising a fog cannon assembly (1) and an adjustment assembly movably connected to the fog cannon assembly (1), characterized in that: The end of the fog cannon assembly (1) is provided with a spray assembly (3). The adjustment assembly includes a first adjustment mechanism (4) hinged to the fog cannon assembly (1) and a second adjustment mechanism (5) rotatably connected to the first adjustment mechanism (4). When the second adjustment mechanism (5) is rotated, the first adjustment mechanism (4) can rotate relatively to drive the spray assembly (3) to rotate horizontally. The first adjustment mechanism (4) includes a bracket mechanism (41) hinged to the outer side wall of the fog cannon assembly (1) and a height adjustment mechanism (42). One end of the height adjustment mechanism (42) is connected to the spray assembly (3), and the other end is connected to the bracket mechanism (41). The height adjustment mechanism (42) includes a first threaded rod (421) connected to the spray assembly (3), a second threaded rod (422) connected to the bracket mechanism (41), and a connecting sleeve (423) for connecting the first threaded rod (421) and the second threaded rod (422). The threads on the first threaded rod (421) and the second threaded rod (422) have opposite helix directions. The bracket mechanism (41) includes a movable chassis (411) on the side close to the second adjustment mechanism (5). The second adjustment mechanism (5) includes a driving mechanism (51) connected to the movable chassis (411) and a base (52) connected to the driving mechanism (51). An activity space for the driving mechanism (51) to rotate is provided between the driving mechanism (51) and the base (52).

2. The rotatable fog cannon for a coal mine roadheader according to claim 1, characterized in that: The movable chassis (411) is provided with a first mounting hole (4111), and the base (52) is provided with a second mounting hole (521) corresponding to the first mounting hole (4111). The driving mechanism (51) includes a first driving part (511) connected to the first mounting hole (4111) and a second driving part (512) connected to the second mounting hole (521). The diameter of the first mounting hole (4111) is the same as that of the second mounting hole (521). The diameter of the first driving part (511) is larger than the diameter of the first mounting hole (4111), and the diameter of the second driving part (512) is smaller than the diameter of the first mounting hole (4111).

3. The rotatable fog cannon for a coal mine roadheader according to claim 1, characterized in that: The second adjustment mechanism (5) further includes an auxiliary roller assembly (53) located between the movable chassis (411) and the base (52) and connected to the movable chassis (411).

4. The rotatable fog cannon for a coal mine roadheader according to claim 3, wherein: The auxiliary roller assembly (53) includes a first universal roller (531) and a second universal roller (532) disposed opposite to the first universal roller (531).

5. The rotatable fog cannon for a coal mine roadheader according to claim 1, characterized in that: An air amplification assembly (6) is provided on the side wall of the fog cannon assembly (1), and an air inlet part (7) for providing external air is located on the side far from the spray assembly (3). The air amplification assembly (6) includes an air inlet hole (61) for connecting an external air compressor and the fog cannon assembly (1), and a diversion mechanism (62) communicated with the inner cavity of the fog cannon assembly (1) and the air inlet hole (61).

6. The rotatable fog cannon for a coal mine roadheader according to claim 5, characterized in that: The diversion mechanism (62) includes a diversion cavity (621) disposed along the circumferential direction of the fog cannon assembly (1) and wound around the inner wall of the fog cannon assembly (1), and an annular slit (622) that communicates with the diversion cavity (621) and is located on the inner wall of the fog cannon assembly (1). The annular slit (622) is connected to the air inlet hole (61) through the diversion cavity (621).

7. A rotatable fog cannon for a coal mine roadheader according to claim 1, characterized in that: The spraying assembly (3) includes a water inlet hole (31) for providing water source, and a plurality of high-pressure atomizing nozzles (32) arranged along the circumferential direction of the fog cannon assembly (1).

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