Dust generating device for dust test

Abstract

The invention provides a dust generating device for a dust test, and the dust generating device comprises a heading machine which is used for simulating the dust test, the heading machine comprises a base and a rack, the rack is movably arranged above the base, and the size of the rack in the width direction is adjustable; the dust generating part is arranged at one end of the rack, the dust generating part is movably connected with the rack, and the dust generating part is used for spraying dust into the environment; and the vertical adjusting piece is arranged between the rack and the base, and the vertical adjusting piece can adjust the relative position of the rack and the base in the vertical direction. Through the technical scheme provided by the invention, the problem that the designed dust removal equipment is poor in dust removal effect due to the fact that the dust production condition of the fully mechanized coal mining face cannot be simulated in the prior art can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mines, and in particular to a dust generating device for dust testing. Background Art

[0002] A tunnel boring machine is a type of mining equipment. At present, a large amount of dust and noise will be generated during the excavation process. If the dust in the tunnel is not removed in time during construction, it will cause harm to the respiratory system of the operator, and excessive dust concentration will easily cause explosions and other operational risks.

[0003] At present, there are relatively few laboratories in my country that are used for key technologies and process simulations for dust control in coal mining working surfaces. Most of them design dust removal equipment based on the air supply volume provided by the user. As the working environment is relatively complex and the dust production of coal mining equipment of different specifications is different, it is impossible to provide relevant data on the dust concentration in the working surface, which results in poor dust removal effect of the designed dust removal equipment. Summary of the invention

[0004] The present invention provides a dust generating device for dust testing, so as to solve the problem that the prior art cannot simulate the dust generation situation of a fully mechanized mining working face, resulting in poor dust removal effect of the designed dust removal equipment.

[0005] The present invention provides a dust generating device for a dust test, which comprises: a tunnel boring machine, which is used to simulate the dust test, the tunnel boring machine comprises a base and a frame, the frame is movably arranged above the base, and the size of the frame in the width direction is adjustable; a dust generating part, which is arranged at one end of the frame, the dust generating part is movably connected to the frame, and the dust generating part is used to spray dust into the environment; a vertical adjusting member, which is arranged between the frame and the base, and the vertical adjusting member can adjust the relative position of the frame and the base in the vertical direction.

[0006] Furthermore, the frame includes: a main body, a first shell and a second shell, the first shell and the second shell are respectively movably arranged on both sides of the main body, and the first shell and the second shell cooperate to adjust the width size of the frame; a width adjustment member, which is drivingly connected to the first shell and the second shell, and the width adjustment member is used to drive the first shell and the second shell to move in the width direction.

[0007] Furthermore, the width adjustment member includes: a first horizontal telescopic member, having a first sleeve and a first movable rod, the first sleeve is arranged at one end of the frame close to the second shell, the first sleeve extends along the width direction, one end of the first movable rod is movably arranged inside the first sleeve, and the other end of the first movable rod is connected to the first shell; a second horizontal telescopic member, which is spaced apart from the first horizontal telescopic member along the length direction of the dust generating device, the second horizontal telescopic member has a second sleeve and a second movable rod, the second sleeve is arranged at one end of the frame close to the first shell, the extension direction of the second sleeve is the same as that of the first sleeve, one end of the second movable rod is movably arranged inside the second sleeve, and the other end of the second movable rod is connected to the second shell.

[0008] Furthermore, the dust generating device also includes a first guide rod and a second guide rod, and the first guide rod and the second guide rod are spaced apart along the length direction of the frame, the first guide rod has a first fixed end and a first movable end, the first movable end can move relative to the first fixed end along the width direction, the first fixed end is connected to an end of the frame close to the first shell, the first movable end is connected to the first shell, and the first fixed end and the first movable end cooperate with each other to guide the moving direction of the first shell; the second guide rod has a second fixed end and a second movable end, the second movable end can move relative to the second fixed end along the width direction, the second fixed end is connected to an end of the frame close to the first shell, the second movable end is connected to the second shell, and the second fixed end and the second movable end cooperate with each other to guide the moving direction of the second shell.

[0009] Furthermore, the dust generating device also includes a first swinging member and a second swinging member, which are arranged between the dust generating part and the frame, the first swinging member can adjust the dust generating part to swing in the vertical direction, and the second swinging member can adjust the dust generating part to swing in the horizontal direction.

[0010] Furthermore, the dust generating part includes: a support arm, one end of which is movably connected to the frame, and the support arm extends along the length direction of the frame; a nozzle, which is movably connected to the support arm, and the nozzle can rotate relative to the support arm, and the nozzle has a dust outlet hole and a cavity, the cavity is connected to one end of the dust outlet hole, and the other end of the dust outlet hole passes through the nozzle, and the rotation axis of the nozzle does not coincide with the axis of the dust outlet hole; a dust supply pipeline is passed through the support arm and the nozzle, one end of the dust supply pipeline is connected to the dust supply source, and the other end of the dust supply pipeline is connected to the cavity; a driving part is arranged between the nozzle and the support arm, and the driving part can drive the nozzle to rotate relative to the support arm.

[0011] Furthermore, the driving part includes: a fan blade structure, which is annularly arranged on the inner wall of the cavity along the rotation axis; an air supply pipeline, which is passed through the support arm and the nozzle, one end of the air supply pipeline is connected to the cavity, and the other end of the air supply pipeline is connected to the air supply source, and one end of the air supply pipeline located in the cavity is bent toward the fan blade structure, and an air outlet is provided on the air supply pipeline, which can blow air toward the fan blade structure to make the nozzle rotate relative to the support arm.

[0012] Furthermore, the vertical adjustment member includes: a first vertical telescopic member, having a first cylinder and a first telescopic rod, the first cylinder is arranged on the base, the first cylinder extends in the vertical direction, one end of the first telescopic rod is movably arranged in the first cylinder, and the other end of the first telescopic rod is connected to the frame; a second vertical telescopic member, which is spaced apart from the first vertical telescopic member along the length direction of the dust generating device, the second vertical telescopic member has a second cylinder and a second telescopic rod, the second cylinder is arranged on the base, the second cylinder extends in the vertical direction, one end of the second telescopic rod is movably arranged in the second cylinder, and the other end of the second telescopic rod is connected to the frame.

[0013] Furthermore, the second swinging member includes: a first motor, which is arranged on the frame, and the first motor has a first driving end, and the first driving end extends in a vertical direction; a rotating plate, which is rotatably arranged on the frame through a rotating shaft, and the rotating plate extends in a length direction, one end of the rotating plate is movably connected to the dust generating part, and the other end of the rotating plate is drivingly connected to the first driving end; a first gear assembly, including a first gear and a second gear, the rotation axes of the first gear and the second gear are arranged in parallel and both extend in the vertical direction, the first gear is sleeved on the outer periphery of the rotating shaft, the rotating shaft rotates synchronously with the first gear, the second gear is drivingly connected to the first driving end, the first gear and the second gear are meshed, and the first motor drives the rotating plate to rotate in a horizontal direction relative to the frame through the first gear assembly.

[0014] Furthermore, the first swinging member includes: a second motor, which is arranged on the frame, and the second motor has a second driving end, and the second driving end extends along the width direction; a second gear assembly, including a third gear and a fourth gear that are meshed with each other, and the rotation axes of the third gear and the fourth gear are parallel and both extend along the width direction, the third gear is connected to the support arm, the support arm rotates synchronously with the third gear, the fourth gear is drivingly connected to the second driving end, and the second motor drives the dust generating part to rotate in the vertical direction along with the frame through the second gear assembly.

[0015] By applying the technical solution of the present invention, the width of the frame is adjustable, and the dust generating device also includes a vertical adjusting member, which is used to adjust the relative position of the frame and the base in the vertical direction. During excavation, excavation equipment of different sizes will affect the area of ​​the flow cross section of the tunnel, which will in turn affect the flow rate and distribution of dust. Through the above settings, the tunneling machine can change its width and height, so that the size of the tunneling machine can be adjusted according to different test requirements, so as to simulate the dust environment of the working face when excavating equipment of different sizes in the tunnel, and can also simulate the generation of dust through the dust generating part, so that the simulation results are more in line with the actual working environment, thereby improving the accuracy and reliability of the test, and providing more comprehensive data support for the design of dust removal equipment and the evaluation of dust removal performance, ensuring the good operation of dust removal equipment in the actual working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 The structure schematic diagram of the dust generating device provided by the present invention is shown;

[0018] Figure 2 A top view of the dust generating device provided by the present invention is shown;

[0019] Figure 3 A partial cross-sectional view of the dust generating device provided by the present invention along the AA direction is shown;

[0020] Figure 4 A partial cross-sectional view of the dust generating device provided by the present invention along the BB direction is shown;

[0021] Figure 5 It shows a schematic structural diagram of the unfolded first shell and the second shell provided by the present invention;

[0022] Figure 6 A partial cross-sectional view of the nozzle provided by the present invention along the CC direction is shown;

[0023] Figure 7 The schematic diagram of the structure of the dust generating part provided by the present invention is shown.

[0024] The above drawings include the following reference numerals:

[0025] 10. Roadheader;

[0026] 11. Base; 12. Frame;

[0027] 121. body; 122. first shell; 123. second shell;

[0028] 1221, a first shielding plate; 1231, a second shielding plate;

[0029] 13. Front shovel plate; 14. Discharge chute;

[0030] 20. Dust generating part;

[0031] 21. Support arm; 22. Sprinkler head;

[0032] 221, dust outlet hole; 222, cavity;

[0033] 223. Bearings;

[0034] 224, connecting shaft;

[0035] 23. Dust supply pipeline;

[0036] 24. Fan blade structure; 25. Air supply pipeline;

[0037] 30. Vertical adjustment member;

[0038] 31. first vertical telescopic member; 32. second vertical telescopic member;

[0039] 40. Width adjustment member;

[0040] 41. A first horizontal telescopic member;

[0041] 411, first sleeve; 412, first movable rod;

[0042] 42. a second horizontal telescopic member;

[0043] 421, second sleeve; 422, second movable rod;

[0044] 51. A first guide rod;

[0045] 511, first fixed end; 512, first mobile end;

[0046] 52. A second guide rod;

[0047] 521, second fixed end; 522, second mobile end;

[0048] 61. A first swinging member;

[0049] 611, second motor; 612, third gear;

[0050] 613, fourth gear;

[0051] 62. second swing member;

[0052] 621, a first motor; 622, a rotating plate;

[0053] 623, first gear; 624, second gear;

[0054] 625, shaft;

[0055] 70. Operating table. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] like Figures 1 to 7 As shown, an embodiment of the present invention provides a dust generating device for dust testing, which includes: a tunnel boring machine 10, a dust generating unit 20 and a vertical adjustment member 30. The tunnel boring machine 10 is used to simulate dust testing, and the tunnel boring machine 10 includes a base 11 and a frame 12. The frame 12 is movably arranged above the base 11, and the frame 12 is adjustable in width. The dust generating unit 20 is arranged at one end of the frame 12, and the dust generating unit 20 is movably connected to the frame 12. The dust generating unit 20 is used to spray dust into the environment. The vertical adjustment member 30 is arranged between the frame 12 and the base 11, and the vertical adjustment member 30 can adjust the relative position of the frame 12 and the base 11 in the vertical direction. A plurality of rollers are also arranged at the bottom of the base 11, and the tunnel boring machine 10 is driven to move in the horizontal direction by the rollers.

[0058] By applying the technical solution of the present invention, the width of the frame 12 is adjustable, and the dust generating device also includes a vertical adjusting member 30, which is used to adjust the relative position of the frame 12 and the base 11 in the vertical direction. During excavation, excavation equipment of different sizes will block the dust, and will also affect the area of ​​the flow cross section of the tunnel, thereby affecting the flow rate and distribution of the dust. Through the above-mentioned settings, the tunnel boring machine 10 can change its width and height, so that the size of the tunnel boring machine 10 can be adjusted according to different test requirements, so as to simulate the dust environment of the working face when excavating equipment of different sizes in the tunnel, and can also simulate the generation of dust through the dust generating part, so that the simulation results are more in line with the actual working environment, thereby improving the accuracy and reliability of the test, and providing more comprehensive data support for the design of dust removal equipment and the evaluation of dust removal performance, ensuring the good operation of the dust removal equipment in the actual working environment.

[0059] Furthermore, the tunnel boring machine 10 also includes a front shovel disc 13 and a discharge chute 14. The front shovel disc 13 is arranged at one end of the base 11 close to the dust generating part 20, and the discharge chute 14 is arranged at one end of the base 11 away from the dust generating part 20. Through the above arrangement, the shape and structure of the tunnel boring equipment can be simulated more realistically, thereby improving the realism of the simulation of the tunnel boring machine 10 and thereby improving the accuracy of the dust model data.

[0060] Specifically, the frame 12 includes: a body 121, a first shell 122 and a second shell 123, the first shell 122 and the second shell 123 are respectively movably arranged on both sides of the body 121, and the first shell 122 and the second shell 123 cooperate to adjust the width size of the frame 12. Through the above arrangement, the frame 12 can adjust the width of both sides of the body 121 through the first shell 122 and the second shell 123, respectively, which improves the flexibility of the width adjustment of the frame 12, so that the tunneling machine 10 can simulate tunneling equipment that is asymmetric in the width direction, and improves the adaptability and usability of the dust generating device.

[0061] The structure of the first shell 122 and the second shell 123 can simulate the box structure on the tunneling equipment, making the simulation effect more realistic, and can further improve the impact and interference of the tunneling machine 10 on dust. The first shell 122 and the second shell 123 are respectively provided with a first shielding plate 1221 and a second shielding plate 1231 on the top, which can be closed together to shield part of the frame 12 and the internal components to prevent dust or other objects from blocking or damaging the components.

[0062] In the present application, the frame 12 further includes a width adjustment member 40, which is drivingly connected to the first shell 122 and the second shell 123, and is used to drive the first shell 122 and the second shell 123 to move in the width direction. By setting the width adjustment member 40, the adjustment accuracy of the frame 12 and the convenience of the adjustment operation can be improved, and the operability of the frame 12 can be improved.

[0063] Specifically, the width adjustment member 40 includes: a first horizontal telescopic member 41 and a second horizontal telescopic member 42. The first horizontal telescopic member 41 has a first sleeve 411 and a first movable rod 412, the first sleeve 411 is arranged at one end of the frame 12 close to the second shell 123, the first sleeve 411 extends along the width direction, one end of the first movable rod 412 is movably arranged inside the first sleeve 411, and the other end of the first movable rod 412 is connected to the first shell 122; the second horizontal telescopic member 42 is arranged at intervals with the first horizontal telescopic member 41 along the length direction of the dust generating device, the second horizontal telescopic member 42 has a second sleeve 421 and a second movable rod 422, the second sleeve 421 is arranged at one end of the frame 12 close to the first shell 122, the extension direction of the second sleeve 421 is the same as that of the first sleeve 411, one end of the second movable rod 422 is movably arranged inside the second sleeve 421, and the other end of the second movable rod 422 is connected to the second shell 123. Through the cooperation of the first horizontal telescopic member 41 and the second horizontal telescopic member 42, not only the accurate adjustment of the width of the rack 12 is achieved, but also the structural stability and convenience of operation of the rack 12 are ensured. In addition, the above-mentioned arrangement enables the first horizontal telescopic member 41 and the second horizontal telescopic member 42 to operate independently or synchronously, so that the workers can flexibly adjust the width of the dust generating device to meet the needs of different test scenarios. In addition, the design of the telescopic member reduces the structural deformation that may occur in the rack 12 during the width adjustment process, and ensures the overall stability of the dust generating device when adjusting the width.

[0064] In this embodiment, two groups of width adjustment members 40 are provided, one group is provided on the side of the frame 12 close to the dust generating part 20, and the other group is provided on the side of the frame 12 away from the dust generating part 20, so as to further increase the reliability of the width adjustment of the tunnel boring machine 10.

[0065] Furthermore, the dust generating device also includes a first guide rod 51 and a second guide rod 52, and the first guide rod 51 and the second guide rod 52 are spaced apart along the length direction of the frame 12, the first guide rod 51 has a first fixed end 511 and a first movable end 512, the first movable end 512 can move relative to the first fixed end 511 along the width direction, the first fixed end 511 is connected to one end of the frame 12 close to the first shell 122, the first movable end 512 is connected to the first shell 122, the first fixed end 511 and the first movable end 512 cooperate with each other to guide the moving direction of the first shell 122; the second guide rod 52 has a second fixed end 521 and a second movable end 522, the second movable end 522 can move relative to the second fixed end 521 along the width direction, the second fixed end 521 is connected to one end of the frame 12 close to the first shell 122, the second movable end 522 is connected to the second shell 123, the second fixed end 521 and the second movable end 522 cooperate with each other to guide the moving direction of the second shell 123. The arrangement of the first guide rod 51 and the second guide rod 52 enables the dust generating device to maintain the linear movement of the first shell 122 and the second shell 123 during the width adjustment process, thereby avoiding tilting or shaking due to the change in the width of the frame 12, and improving the stability and accuracy of the frame 12 during the width adjustment process.

[0066] The dust generating device further includes a first swinging member 61 and a second swinging member 62, which are arranged between the dust generating part 20 and the frame 12. The first swinging member 61 can adjust the dust generating part 20 to swing in the vertical direction, and the second swinging member 62 can adjust the dust generating part 20 to swing in the horizontal direction. The arrangement of the first swinging member 61 and the second swinging member 62 enables the dust generating part 20 to simulate the motion trajectory of the excavation equipment during excavation, so that the dust generating device can obtain a more realistic distribution of dust, thereby increasing the authenticity of the dust test.

[0067] Furthermore, the dust generating part 20 includes: a support arm 21, a nozzle 22, a dust supply pipeline 23 and a driving part. Among them, one end of the support arm 21 is movably connected to the frame 12, and the support arm 21 extends along the length direction of the frame 12. The nozzle 22 is movably connected to the support arm 21, and the nozzle 22 can rotate relative to the support arm 21. The nozzle 22 has a dust outlet hole 221 and a cavity 222. The cavity 222 is connected to one end of the dust outlet hole 221, and the other end of the dust outlet hole 221 passes through the nozzle 22, and the rotation axis of the nozzle 22 does not coincide with the axis of the dust outlet hole 221. The dust supply pipeline 23 is arranged in the support arm 21 and the nozzle 22, and one end of the dust supply pipeline 23 is connected to the dust supply source, and the dust supply source can provide dust of different concentrations. The other end of the dust supply pipeline 23 is connected to the cavity 222. The driving unit is arranged between the nozzle 22 and the support arm 21, and the driving unit can drive the nozzle 22 to rotate relative to the support arm 21. Through the above arrangement, the nozzle 22 can simulate the natural diffusion of dust in the tunnel, further improve the simulation accuracy of the dust environment, and improve the simulation accuracy and efficiency of the test.

[0068] There are multiple dust outlet holes 221 and multiple dust supply pipelines 23 , and the multiple dust outlet holes 221 are arranged in a ring shape on the nozzle 22 .

[0069] Specifically, the driving part includes: a fan blade structure 24 and an air supply pipeline 25. Among them, the fan blade structure 24 is arranged in a ring on the inner wall of the cavity 222 along the rotation axis. The air supply pipeline 25 is arranged in the support arm 21 and the nozzle 22, one end of the air supply pipeline 25 is connected with the cavity 222, and the other end of the air supply pipeline 25 is connected with the air supply source. One end of the air supply pipeline 25 located in the cavity 222 is bent toward the fan blade structure 24, and an air outlet is provided on the air supply pipeline 25. The air outlet can blow air toward the fan blade structure 24 to rotate the nozzle 22 relative to the support arm 21. Through the cooperation of the fan blade structure 24 and the air supply pipeline 25, the thrust of the gas can be used to drive the fan blade structure 24 to rotate, and then drive the nozzle 22 to rotate, so that the dust hole 221 can discharge dust while rotating, so that the dust generation situation is closer to the actual working environment. At the same time, this contactless driving method reduces the wear between the components and prolongs the service life of the dust generating device.

[0070] Specifically, the support arm 21 is connected to the nozzle 22 via a connecting shaft 224, two bearings 223 are arranged at intervals on the outer side of the connecting shaft 224, the inner ring of the bearing 223 is connected to the connecting shaft, the outer ring of the bearing 223 is connected to the nozzle 22, and the connecting shaft 224 is rotatably connected to the nozzle 22 via the bearing. The fan blade structure 24 can be a plurality of annular structures arranged in the side wall of the cavity 222, and the fan blade structure 24 can also be a toothed structure, as long as the fan blade structure 24 can be driven to rotate by airflow.

[0071] The vertical adjustment member 30 includes: a first vertical telescopic member 31 and a second vertical telescopic member 32. The first vertical telescopic member 31 has a first cylinder and a first telescopic rod, the first cylinder is arranged on the base 11, the first cylinder extends in the vertical direction, one end of the first telescopic rod is movably arranged in the first cylinder, and the other end of the first telescopic rod is connected to the frame 12. The second vertical telescopic member 32 is arranged spaced apart from the first vertical telescopic member 31 along the length direction of the dust generating device, the second vertical telescopic member 32 has a second cylinder and a second telescopic rod, the second cylinder is arranged on the base 11, the second cylinder extends in the vertical direction, one end of the second telescopic rod is movably arranged in the second cylinder, and the other end of the second telescopic rod is connected to the frame 12. The arrangement of the first vertical telescopic member 31 and the second vertical telescopic member 32 enables the dust generating device to simulate the dust environment when the excavation equipment at different heights is working, and the design of the telescopic member reduces the structural deformation that may occur in the frame 12 during the height adjustment process, and maintains the overall stability of the dust generating device when adjusting the height.

[0072] Specifically, the second swinging member 62 includes: a first motor 621, a rotating plate 622 and a first gear assembly. The first motor 621 is arranged on the frame 12, and the first motor 621 has a first driving end, and the first driving end extends in the vertical direction. The rotating plate 622 is rotatably arranged on the frame 12 through a rotating shaft 625, and the rotating plate 622 extends in the length direction. One end of the rotating plate 622 is movably connected to the dust generating part 20, and the other end of the rotating plate 622 is drivingly connected to the first driving end. The first gear assembly includes a first gear 623 and a second gear 624, and the rotating axes of the first gear 623 and the second gear 624 are arranged in parallel and extend in the vertical direction. The first gear 623 is sleeved on the outer periphery of the rotating shaft 625, and the rotating shaft 625 rotates synchronously with the first gear 623, and the second gear 624 is drivingly connected to the first driving end, and the first gear 623 and the second gear 624 are meshed. The first motor 621 drives the rotating plate 622 to rotate in the horizontal direction relative to the frame 12 through the first gear 623 assembly. This gear-driven swinging member design ensures the smoothness and accuracy of the horizontal swinging of the dust-generating part 20. Through the transmission of the first gear assembly, the second swinging member 62 can accurately control the horizontal swinging amplitude of the dust-generating part 20, avoiding a single swing amplitude that is too large and reduces the realism of the simulation, and more realistically simulates the diffusion and aggregation of dust in the horizontal direction.

[0073] Specifically, the rotating shaft 625 is rotatably connected to the frame 12 through a bearing assembly, and a sleeve is provided between the rotating shaft 625 and the rotating plate 622. The rotating shaft 625 and the bearing assembly are provided at one end of the sleeve, and the first gear 623 is sleeved at the other end of the sleeve. In addition, a protective sleeve is provided on the frame 12, and the protective sleeve is sleeved on the outer periphery of the sleeve to protect the sleeve and increase the stability of the rotation of the rotating plate 622.

[0074] The first swinging member 61 includes: a second motor 611 and a second gear assembly. The second motor 611 is arranged on the frame 12, and the second motor 611 has a second driving end, and the second driving end extends in the width direction. The second gear assembly includes a third gear 612 and a fourth gear 613 that mesh with each other, and the rotation axes of the third gear 612 and the fourth gear 613 are parallel and extend in the width direction. The third gear 612 is connected to the support arm 21, and the support arm 21 rotates synchronously with the third gear 612. The fourth gear 613 is connected to the second driving end, and the second motor 611 drives the dust generating part 20 to rotate in the vertical direction with the frame 12 through the second gear 624 assembly. Through the cooperation of the second motor 611 and the second gear assembly, the dust generating part 20 can be accurately swung in the vertical direction, avoiding the single swing amplitude being too large to reduce the authenticity of the simulation, more realistically simulating the diffusion and aggregation of dust in the vertical direction, and improving the stability and accuracy of the swing of the dust generating part 20 in the vertical direction.

[0075] Among them, the dust generating device also includes an operating table 70, which is arranged on the first shell 122 or the second shell 123. The operating table 70 has a controller, which is respectively driven and connected to the dust generating part 20, the vertical adjustment member 30 and the width adjustment member 40. In this way, the operating table 70 can facilitate the staff to control and adjust the various components on the tunnel boring machine 10, thereby improving the convenience of operating the dust generating device.

[0076] The steps for conducting a dust generation test using the dust generation device provided in this application are as follows:

[0077] Step 1: According to the test requirements, the height and width of the first shell 122 and the second shell 123 are respectively controlled by the vertical adjustment member 30 and the width adjustment member 40 to simulate the height and width of the real excavation equipment, and the device is moved into the simulated tunnel;

[0078] The second step is to start the air supply device in the simulated tunnel to supply air to the tunnel, start the dust collector, adjust the air volume and record it;

[0079] The third step is to start the dust supply source to feed dust into the dust supply pipeline 23 to simulate the dust generation when the tunnel boring machine 10 is working and cutting coal;

[0080] The fourth step is to control the first motor 621 and the second motor 611 to drive the nozzle 22 to swing up and down and left and right, so as to simulate the distribution of dust during the excavation work of the excavation equipment.

[0081] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0082] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0083] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0084] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0085] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust generating device for dust testing, characterized in that: The dust generating device comprises: A tunnel boring machine (10) is used for a simulated dust test, the tunnel boring machine (10) comprising a base (11) and a frame (12), the frame (12) being movably arranged above the base (11), and the frame (12) being adjustable in width direction; A dust generating part (20) is arranged at one end of the frame (12), the dust generating part (20) is movably connected to the frame (12), and the dust generating part (20) is used to spray dust into the environment; A vertical adjustment member (30), wherein the vertical adjustment member (30) is arranged between the frame (12) and the base (11), and the vertical adjustment member (30) is capable of adjusting the relative position of the frame (12) and the base (11) in the vertical direction.

2. The dust generating device according to claim 1, characterized in that: The frame (12) comprises: A body (121), a first shell (122) and a second shell (123), wherein the first shell (122) and the second shell (123) are respectively movably arranged on both sides of the body (121), and the first shell (122) and the second shell (123) cooperate to adjust the width of the frame (12); A width adjustment member (40) is drivingly connected to the first shell (122) and the second shell (123), and the width adjustment member (40) is used to drive the first shell (122) and the second shell (123) to move in the width direction.

3. The dust generating device according to claim 2, characterized in that: The width adjusting member (40) comprises: A first horizontal telescopic member (41) comprises a first sleeve (411) and a first movable rod (412), wherein the first sleeve (411) is arranged at one end of the frame (12) close to the second shell (123), the first sleeve (411) extends along the width direction, one end of the first movable rod (412) is movably arranged inside the first sleeve (411), and the other end of the first movable rod (412) is connected to the first shell (122); A second horizontal telescopic member (42) is arranged at a distance from the first horizontal telescopic member (41) along the length direction of the dust generating device. The second horizontal telescopic member (42) comprises a second sleeve (421) and a second movable rod (422). The second sleeve (421) is arranged at one end of the frame (12) close to the first shell (122). The extension direction of the second sleeve (421) is the same as that of the first sleeve (411). One end of the second movable rod (422) is movably arranged inside the second sleeve (421), and the other end of the second movable rod (422) is connected to the second shell (123).

4. The dust generating device according to claim 3, characterized in that: The dust generating device further comprises a first guide rod (51) and a second guide rod (52), wherein the first guide rod (51) and the second guide rod (52) are spaced apart along the length direction of the frame (12), the first guide rod (51) comprises a first fixed end (511) and a first movable end (512), the first movable end (512) can move relative to the first fixed end (511) along the width direction, the first fixed end (511) is connected to an end of the frame (12) close to the first shell (122), the first movable end (512) is connected to the first shell (122), and the first fixed end (511) and the first movable end (512) cooperate with each other to guide the moving direction of the first shell (122); The second guide rod (52) has a second fixed end (521) and a second movable end (522); the second movable end (522) is movable relative to the second fixed end (521) along the width direction; the second fixed end (521) is connected to an end of the frame (12) close to the first shell (122); the second movable end (522) is connected to the second shell (123); the second fixed end (521) and the second movable end (522) cooperate with each other to guide the moving direction of the second shell (123).

5. The dust generating device according to claim 1, characterized in that: The dust generating device further comprises a first swinging member (61) and a second swinging member (62); the first swinging member (61) and the second swinging member (62) are arranged between the dust generating portion (20) and the frame (12); the first swinging member (61) can adjust the dust generating portion (20) to swing in a vertical direction; and the second swinging member (62) can adjust the dust generating portion (20) to swing in a horizontal direction.

6. The dust generating device according to claim 5, characterized in that: The dust generating part (20) comprises: A support arm (21), one end of the support arm (21) being movably connected to the frame (12), and the support arm (21) extending along the length direction of the frame (12); A nozzle (22) is movably connected to the support arm (21); the nozzle (22) can rotate relative to the support arm (21); the nozzle (22) has a dust outlet hole (221) and a cavity (222); the cavity (222) is connected to one end of the dust outlet hole (221); the other end of the dust outlet hole (221) passes through the nozzle (22); and the rotation axis of the nozzle (22) does not coincide with the axis of the dust outlet hole (221); A dust supply pipeline (23) is provided through the support arm (21) and the nozzle (22), one end of the dust supply pipeline (23) is connected to a dust supply source, and the other end of the dust supply pipeline (23) is communicated with the cavity (222); The driving unit is arranged between the nozzle (22) and the support arm (21), and the driving unit can drive the nozzle (22) to rotate relative to the support arm (21).

7. The dust generating device according to claim 6, characterized in that: The driving unit comprises: a fan blade structure (24) arranged in an annular manner on the inner wall of the cavity (222) along the rotation axis; An air supply pipeline (25) is arranged inside the support arm (21) and the nozzle (22); one end of the air supply pipeline (25) is connected to the cavity (222); the other end of the air supply pipeline (25) is connected to an air supply source; one end of the air supply pipeline (25) located in the cavity (222) is bent toward the fan blade structure (24); an air outlet is provided on the air supply pipeline (25); the air outlet can blow air toward the fan blade structure (24) to make the nozzle (22) rotate relative to the support arm (21).

8. The dust generating device according to claim 1, characterized in that: The vertical adjustment member (30) comprises: A first vertical telescopic member (31) comprises a first cylinder and a first telescopic rod, wherein the first cylinder is arranged on the base (11), the first cylinder extends in a vertical direction, one end of the first telescopic rod is movably arranged in the first cylinder, and the other end of the first telescopic rod is connected to the frame (12); A second vertical telescopic member (32) is arranged at a distance from the first vertical telescopic member (31) along the length direction of the dust generating device, the second vertical telescopic member (32) comprises a second cylinder and a second telescopic rod, the second cylinder is arranged on the base (11), the second cylinder extends in the vertical direction, one end of the second telescopic rod is movably arranged in the second cylinder, and the other end of the second telescopic rod is connected to the frame (12).

9. The dust generating device according to claim 6, characterized in that: The second swinging member (62) comprises: A first motor (621) is arranged on the frame (12), wherein the first motor (621) has a first driving end, and the first driving end extends in a vertical direction; A rotating plate (622) is rotatably arranged on the frame (12) via a rotating shaft (625), the rotating plate (622) extending along the length direction, one end of the rotating plate (622) being movably connected to the dust generating portion (20), and the other end of the rotating plate (622) being drivingly connected to the first driving end; The first gear assembly comprises a first gear (623) and a second gear (624); the rotation axes of the first gear (623) and the second gear (624) are arranged in parallel and extend in the vertical direction; the first gear (623) is sleeved on the outer periphery of the rotating shaft (625); the rotating shaft (625) rotates synchronously with the first gear (623); the second gear (624) is drivingly connected to the first driving end; the first gear (623) and the second gear (624) are meshed; the first motor (621) drives the rotating plate (622) to rotate in the horizontal direction relative to the frame (12) through the first gear (623) assembly.

10. The dust generating device according to claim 9, characterized in that: The first swinging member (61) comprises: A second motor (611) is arranged on the frame (12), the second motor (611) having a second driving end, and the second driving end extends along the width direction; The second gear assembly comprises a third gear (612) and a fourth gear (613) meshing with each other, wherein the rotation axes of the third gear (612) and the fourth gear (613) are parallel and extend along the width direction, the third gear (612) is connected to the support arm (21), the support arm (21) rotates synchronously with the third gear (612), the fourth gear (613) is drivingly connected to the second driving end, and the second motor (611) drives the dust generating part (20) to rotate along with the frame (12) in the vertical direction through the second gear (624) assembly.

Images