CN211975040U - Dust removal fan moves system of establishing - Google Patents
Dust removal fan moves system of establishing Download PDFInfo
- Publication number
- CN211975040U CN211975040U CN202020388650.9U CN202020388650U CN211975040U CN 211975040 U CN211975040 U CN 211975040U CN 202020388650 U CN202020388650 U CN 202020388650U CN 211975040 U CN211975040 U CN 211975040U
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- fan
- slide rail
- dust removal
- air duct
- dust
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- 239000000428 dust Substances 0.000 title claims abstract description 90
- 230000000712 assembly Effects 0.000 claims description 18
- 238000000429 assembly Methods 0.000 claims description 18
- 238000010410 dusting Methods 0.000 claims 3
- 238000009434 installation Methods 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 abstract 1
- 239000010720 hydraulic oil Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000028571 Occupational disease Diseases 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006806 disease prevention Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a dust removal fan moving system, which comprises a dust removal fan, a slide rail suspended below a tunnel roof, at least two fan sliding pieces connected above the dust removal fan and erected on the slide rail, and a fan driving device arranged on the slide rail and used for driving the fan sliding pieces to move along the slide rail; the slide rail includes two at least slide rail set spares, and slide rail set spare is arranged along the length direction in tunnel, and detachably suspends in midair in the below of tunnel roof, can dismantle the connection between the adjacent slide rail set spare, and after dust exhausting fan slided a slide rail set spare, demolishd this slide rail set spare to with this slide rail set spare and the butt joint of a slide rail set spare of dust exhausting fan direction of advance's farthest end. Dust exhausting fan can follow the working face and move head to head in this application, and the slide rail comprises many slide rail set spares, pull down the installation with rear slide rail set spare and dock with the slide rail set spare of the most distal end of dust exhausting fan direction of advance, can prolong the effective use length of slide rail, need not lay the slide rail in whole tunnel.
Description
Technical Field
The utility model relates to a mining equipment technical field especially relates to a dust exhausting fan moves and establishes system.
Background
When the underground operation of the mine is carried out, a wet dust removal fan is required to be arranged on the fully mechanized excavation working surface of the mine according to the related requirements of mine occupational disease prevention and ventilation technology. The technical requirements of some types of dust removal fans are that the distance between an air suction opening and a head-on is not more than 5-10m when the dust removal fan works. The dust removal fan is required to be arranged at the head of the working face, but no residual space is left on the machine body of the working face head-on comprehensive digging machine for placing the dust removal fan. If the negative pressure air duct is arranged on the frame of the second conveyor of the roadheader, the negative pressure air duct is additionally arranged at the air suction opening to the head of the second conveyor for dust removal. However, the air suction volume of the head of the dust removal fan is smaller than the designed air suction volume after the negative pressure air duct is additionally arranged, the dust removal fan is not beneficial to dust collection, the dust removal efficiency is very low, and the frame of the second conveyor of the fully-mechanized excavating machine is high in rigidity and cannot be safely erected on the frame of the second conveyor.
Therefore, in order to safely and quickly install and move the dust removal fan and improve the working efficiency of operators, the dust removal fan moving system convenient for moving the dust removal fan is needed to be provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a conveniently move dust exhausting fan who establishes dust exhausting fan and move and establish the system.
The technical scheme of the utility model provides a dust exhausting fan moving system, including dust exhausting fan, hang in the slide rail of tunnel roof below in midair, connect in the top of the said dust exhausting fan and erect at least two fan sliding pieces on the said slide rail, and, install on the said slide rail and be used for driving the said fan sliding piece along the fan drive unit of the said slide rail movement;
the slide rail comprises at least two slide rail assemblies, the slide rail assemblies are arranged along the length direction of the roadway and are detachably suspended below a top plate of the roadway, and the adjacent slide rail assemblies are detachably connected;
and after the dust removal fan slides through one slide rail assembly, removing the slide rail assembly, and butting the slide rail assembly with a slide rail assembly at the farthest end in the advancing direction of the dust removal fan.
Further, every slide rail set spare includes two tracks that set up side by side, every fan sliding component includes two fan gyro wheels, two the fan gyro wheel erects respectively on two the track, fan drive arrangement drive the fan gyro wheel is followed the track rolls and drives dust exhausting fan slides.
Further, the slide rail assembly still includes the support riser, the upper end of supporting the riser is connected with the tunnel roof through the cable chain, the lower extreme of supporting the riser extends two towards both sides the track, two the track perpendicular to support the riser.
Furthermore, the outer side edge of the track extends upwards to form a flange, and the fan roller is located between the flange and the supporting vertical plate.
Furthermore, every fan sliding piece includes the fan connecting plate, the lower extreme of fan connecting plate is connected dust exhausting fan, and two gyro wheel mounting panels extend from the upper end, every the inboard of gyro wheel mounting panel is connected with one through the round pin axle fan gyro wheel.
Furthermore, a connecting lug plate extends out of the lower end of the fan connecting plate, a fan lug plate is arranged above the dust removal fan, and the fan lug plate is connected with the connecting lug plate through a bolt.
Furthermore, the fan driving device is a hydraulic oil cylinder, the telescopic end of the hydraulic oil cylinder is connected with the fan sliding piece, and the fixed end of the hydraulic oil cylinder is detachably connected with the slide rail component which is the nearest end of the dust removal fan in the advancing direction.
Furthermore, an air outlet of the dust removal fan is also connected with an air duct, at least two air duct sliding pieces are connected above the air duct, and the air duct sliding pieces are erected on the slide rails;
the air duct sliding piece is further connected with an air duct driving device and used for driving the air duct sliding piece to slide along the sliding rail.
Furthermore, the air duct driving device comprises a twisted rope, a guide wheel and a winch, one end of the twisted rope is connected with the air duct sliding piece, and the other end of the twisted rope is connected to the winch after bypassing the guide wheel.
Further, the slide rail comprises two rails arranged side by side;
every dryer sliding part includes rings and two dryer gyro wheels, the lower extreme of rings is connected the dryer, and the upper end is provided with the opening, two the dryer gyro wheel is rotationally installed respectively the open-ended both sides, and two the dryer gyro wheel erects respectively two on the track.
After adopting above-mentioned technical scheme, have following beneficial effect:
the sliding rail is suspended below the roadway top plate, and the dust removal fan is driven by the fan driving device to slide along the sliding rail, so that the dust removal fan can move head to head along with the working face, and the dust removal effect is guaranteed;
the slide rail comprises two at least slide rail set spares to detachably suspends in midair in the below of tunnel roof, along with dust exhausting fan's removal, pull down the slide rail set spare at rear and dock with the slide rail set spare of the most distal end of dust exhausting fan direction of advance, can prolong the effective use length of slide rail, need not lay the slide rail in whole tunnel.
Drawings
The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:
fig. 1 is a schematic view of a dust removal fan transfer system according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of the blower slider mounted on the slide rail according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of an embodiment of the present invention, wherein the air duct sliding member is mounted on the slide rail.
Reference symbol comparison table:
the system comprises a roadway roof 100, an anchor rope 101 and a cable chain 102;
a dust removal fan 01;
slide rail 02: the sliding rail component 21, the rail 22, the flange 221 and the supporting vertical plate 23;
fan glide 03: the fan roller 31, the fan connecting plate 32, the roller mounting plate 33, the pin shaft 34, the connecting lug plate 35 and the mounting hole 351;
a fan driving device 04 and an air duct 05;
air duct sliding piece 06: a lifting ring 61 and an air duct roller 62;
a strand 71, a guide wheel 72, a winch 73.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
It is easily understood that, according to the technical solution of the present invention, a plurality of structural modes and implementation modes that can be mutually replaced by those of ordinary skill in the art can be achieved without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are only exemplary illustrations of the technical solutions of the present invention, and should not be construed as limiting or restricting the technical solutions of the present invention in its entirety or as a limitation of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
The dust removal fan moving system in this embodiment, as shown in fig. 1, includes a dust removal fan 01, a slide rail 02 suspended below a roadway roof 100, two fan sliding members 03 connected above the dust removal fan 01 and erected on the slide rail 02, and a fan driving device 04 installed on the slide rail 02 and used for driving the fan sliding members 03 to move along the slide rail;
the slide rail 02 comprises four slide rail assemblies 21, the slide rail assemblies 21 are arranged along the length direction of the roadway and are detachably suspended below the top plate 100 of the roadway, and the adjacent slide rail assemblies 21 are detachably connected;
after the dust removing fan 01 slides over one of the slide rail assemblies 21, the slide rail assembly 21 is removed, and the slide rail assembly 21 is butted with the slide rail assembly 21 at the farthest end in the advancing direction of the dust removing fan 01.
This application dust exhausting fan 01 installs in the tunnel, and dust exhausting fan 01 slides a 03 through two fans and installs in slide rail 02, slides on slide rail 02 by fan drive arrangement 04 drive fan slide 03 to promote dust exhausting fan 01 motion, make dust exhausting fan 01 can follow the working face and move head-on, guarantee dust exhausting fan 01's dust removal effect.
In addition, slide rail 02 comprises four slide rail assemblies 21 in this application, and slide rail assembly 21 detachably hangs below tunnel roof 100 to also can dismantle the connection between the adjacent slide rail assembly 21, slide rail assembly 21 can dismantle at will. Referring to fig. 1, the movement direction of the dust and wind removing machine 01 is from left to right, the right side in the figure is the forward direction of the dust and wind removing machine 01, and when the dust and wind removing machine 01 moves to the right side to the second left slide rail assembly 21b, the leftmost slide rail assembly 21a can be detached and connected to the rightmost side of the slide rail 02, that is, the right side of the rightmost slide rail assembly 21 d. Along with dust exhausting fan 01 removes along the tunnel, be connected to the right side with left slide rail set spare 21 in proper order, both guaranteed the effective use length of slide rail 02, reduced slide rail set spare 21's use amount again and set up the work load of slide rail, avoided setting up the slide rail in whole tunnel.
It should be noted that more than two fan sliding pieces 03 can be arranged, specifically according to the weight of the dust removal fan 01; the number of the sliding rail assemblies 21 includes, but is not limited to, four, and two or more sliding rail assemblies 21 may be provided according to the length of the sliding rail assemblies 21.
Further, as shown in fig. 2, each of the slide rail assemblies 21 includes two rails 22 disposed side by side, each of the fan sliding members 03 includes two fan rollers 31, the two fan rollers 31 are respectively erected on the two rails 22, and the fan driving device 04 drives the fan rollers 31 to roll along the rails 22 and drive the dust removing fan 01 to slide.
Specifically, fig. 2 shows a cross-sectional view of the slide rail assembly 21, two rails 22 arranged side by side are arranged along the length direction of the slide rail assembly 21, and the four slide rail assemblies 21 are connected in sequence, so that the rails 22 of two adjacent slide rail assemblies 21 are in smooth transition to form two continuous rails 22 on the slide rail 02. The two rails 22 are horizontally arranged and located on the same horizontal plane, and the two fan rollers 31 of the fan sliding piece 03 are correspondingly erected on the two rails 22. Through setting up two 22 bearing of track and direction, strengthened dust exhausting fan 01's installation intensity, prevent that dust exhausting fan 01 from dropping.
Alternatively, three or more rails 22 may be provided.
Further, the slide rail assembly 21 further comprises a supporting vertical plate 23, the upper end of the supporting vertical plate 23 is connected with the roadway roof 100 through a cable chain 102, two rails 22 extend from the lower end of the supporting vertical plate 23 towards two sides, and the two rails 22 are perpendicular to the supporting vertical plate 23.
Specifically, support the vertical setting of riser 23, track 22 is located the lower extreme of supporting riser 23 to track 22 is mutually perpendicular with supporting riser 23, and fan gyro wheel 31 erects the left and right sides at supporting riser 23. The upper end of supporting riser 23 is connected with cable chain 102, and the inherent anchor rope 101 of anchor in tunnel roof 100, anchor rope 101 part stretch out under tunnel roof 100, and anchor rope 101 is connected to cable chain 102 one end, and the upper end of supporting riser 23 is connected to one end, suspends track 22 in midair below tunnel roof 100, and every slide rail set 21 connects two cable chains 102 in this embodiment.
Furthermore, the outer edge of the rail 22 extends upwards to form a flange 221, and the fan roller 31 is positioned between the support vertical plate 23 and the flange 221 to prevent the fan roller 31 from separating from the rail 22.
In the present embodiment, the cross section of the slide rail 02 is an i-shaped section, and the slide rail assembly 21 may be an i-shaped steel, for example, HW150 x 150 i-shaped steel, and multiple sections of i-shaped steel are connected in sequence to form the slide rail 02 in the present embodiment.
Further, as shown in fig. 2, each fan sliding member 03 includes a fan connecting plate 32, the lower end of the fan connecting plate 32 is connected to the dust removing fan 01, the upper end of the fan connecting plate extends out of two roller mounting plates 33, and the inner side of each roller mounting plate 33 is connected to a fan roller 31 through a pin 34.
Specifically, fan connecting plate 32 level sets up, and two gyro wheel mounting panels 33 perpendicular to fan connecting plate 32 upwards extend, fan gyro wheel 31 and fan connecting plate 32 parallel arrangement, and the two is through round pin axle 34 rotatable coupling, and fan gyro wheel 31 of every gyro wheel mounting panel 33 installation, two fan gyro wheels 31 erect when on slide rail 02, and two fan gyro wheels 31 are in the both sides of supporting riser 23, and supporting riser 23 is pressed from both sides in the centre of two fan gyro wheels 31.
Optionally, the fan connecting plate 32 and the roller mounting plate 33 may be integrally formed, or may be split, and may be fixedly connected by bolts or the like.
Further, a connection lug plate 35 extends from the lower end of the fan connection plate 32, a fan lug plate (not shown) is arranged above the dust removing fan 01, and the fan lug plate is connected with the connection lug plate 35 through a bolt (not shown).
As shown in fig. 2, three connecting ear plates 35 extend from the lower end of the fan connecting plate 32, mounting holes 351 are formed in the connecting ear plates 35, fan mounting holes are correspondingly formed in the fan ear plates, and bolts penetrate through the mounting holes 351 and the fan mounting holes to connect the fan connecting plate 32 and the dust removal fan 01.
Specifically, one of the connection lug plates 35 and the fan lug plate is a double lug plate, and the other is a single lug plate, and the single lug plate is inserted into the double lug plate.
Further, the fan driving device 04 is a hydraulic cylinder, a telescopic end of the hydraulic cylinder is connected to the fan sliding member 03, and a fixed end of the hydraulic cylinder is detachably connected to the slide rail assembly 21 at the nearest end of the dust removing fan 01 in the advancing direction, that is, the slide rail assembly 21a at the leftmost side in fig. 1.
Specifically, the flexible end of hydraulic cylinder and two fan sliding parts 03 fixed connection, stiff end and slide rail set spare 21a detachably are connected. As shown in fig. 1, when the telescopic end of the hydraulic cylinder extends out, the fan sliding piece 03 is pushed to move from the sliding rail assembly 21a to the sliding rail assembly 21b, so that the dust removing fan 01 moves rightwards; then the connection between the fixed end and the sliding rail component 21a is disassembled, the telescopic end of the hydraulic oil cylinder is controlled to retract, and the hydraulic oil cylinder integrally moves to the right side under the action of driving force as the telescopic end is fixed on the fan sliding piece 03; and then, connecting the fixed end of the hydraulic oil cylinder with the slide rail assembly 21a (if the fixed end of the hydraulic oil cylinder moves to the slide rail assembly 21b, the fixed end of the hydraulic oil cylinder is connected with the slide rail assembly 21 b), and repeating the steps to continuously push the dust removal fan 02 to move towards the right side.
Further, as shown in fig. 1, an air outlet of the dust removal fan 01 is further connected with an air duct 05, at least two air duct sliding pieces 06 are connected above the air duct 05, and the air duct sliding pieces 06 are erected on the slide rail 02;
the air duct sliding piece 06 is also connected with an air duct driving device for driving the air duct sliding piece 06 to slide along the slide rail 02.
In this embodiment, install dryer 05 additional at dust exhausting fan 01's air outlet to guarantee the air feed volume that the working face was first, dryer 05 erects on slide rail 02 through dryer glide 06, and it follows dust exhausting dryer 01 and follows the working face through dryer drive arrangement drive. The air duct 05 is generally a telescopic air duct.
Further, the air duct driving device comprises a twisted rope 71, a guide wheel 72 and a winch 73, wherein one end of the twisted rope 71 is connected with the air duct sliding piece 06, and the other end of the twisted rope bypasses the guide wheel 72 and is connected to the winch 73.
Specifically, the air duct driving device pulls the air duct 05 to move through the twisted rope 71, one end of the twisted rope 71 is connected with each air duct sliding piece 06, the air duct sliding pieces 06 are arranged at intervals according to a set distance, the other end of the twisted rope 71 is connected to the winch 73 after being guided by the guide wheel 72, the winch 73 is rotated to wind the twisted rope 71, and therefore the air duct sliding pieces 06 are pulled to slide along the sliding rail 02. The winch 73 may be mounted on a roadheader or other equipment on the working surface, and the winch 73 is rotated by a human power, or is connected to a driving motor for driving.
Further, the slide rail 02 includes two rails 22 arranged side by side; as shown in fig. 3, each air duct sliding member 06 includes a hanging ring 61 and two air duct rollers 62, the lower end of the hanging ring 61 is connected to the air duct 05, the upper end is provided with an opening, the two air duct rollers 62 are respectively rotatably mounted on two sides of the opening, and the two air duct rollers 62 are respectively erected on the two rails 22.
In this embodiment, the hanging ring 61 is in an inverted triangle shape, the opening is arranged at the upper end, and the two air duct rollers 62 are clamped on two sides of the supporting vertical plate 23 of the slide rail 02 and roll along the rail 22 when being driven.
Optionally, the air duct sliding piece 06 may also adopt the same structure as the fan sliding piece 03.
The dust exhausting fan moves and establishes the system, installs under the tunnel roof, adopts the slide rail to realize moving and establishes, through the heavier dust exhausting fan of hydraulic cylinder drive quality, the dryer that capstan winch drive quality is lighter to the slide rail adopts the mode that can dismantle the connection, does not need whole tunnel to lay the slide rail, has reduced work load, has realized that dust exhausting fan follows the working face and moves head-on, has solved dust exhausting fan's installation difficult problem.
What has been described above is merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.
Claims (10)
1. A dust removal fan moving system is characterized by comprising a dust removal fan, a slide rail, at least two fan sliding pieces and a fan driving device, wherein the slide rail is suspended below a roadway roof, the at least two fan sliding pieces are connected above the dust removal fan and erected on the slide rail, and the fan driving device is installed on the slide rail and used for driving the fan sliding pieces to move along the slide rail;
the slide rail comprises at least two slide rail assemblies, the slide rail assemblies are arranged along the length direction of the roadway and are detachably suspended below a top plate of the roadway, and the adjacent slide rail assemblies are detachably connected;
and after the dust removal fan slides through one slide rail assembly, removing the slide rail assembly, and butting the slide rail assembly with a slide rail assembly at the farthest end in the advancing direction of the dust removal fan.
2. The dust exhausting fan moving system of claim 1, wherein each of the rail assemblies includes two rails disposed side by side, each of the fan sliding members includes two fan rollers, the two fan rollers are respectively erected on the two rails, and the fan driving device drives the fan rollers to roll along the rails and drive the dust exhausting fan to slide.
3. The dust exhausting fan moving system of claim 2, wherein the sliding rail assembly further comprises a supporting vertical plate, the upper end of the supporting vertical plate is connected with a roadway roof through a cable chain, two rails extend from the lower end of the supporting vertical plate towards two sides, and the two rails are perpendicular to the supporting vertical plate.
4. The dust exhausting fan transfer system of claim 3, wherein the outer edge of the rail extends upwardly with a flange, and the fan roller is located between the flange and the support riser.
5. The dust exhausting fan moving system of claim 3, wherein each fan sliding member comprises a fan connecting plate, the lower end of the fan connecting plate is connected with the dust exhausting fan, the upper end of the fan connecting plate extends out of two roller mounting plates, and the inner side of each roller mounting plate is connected with one fan roller through a pin shaft.
6. The mobile dust removal fan system of claim 5, wherein a connection lug plate extends from the lower end of the fan connection plate, a fan lug plate is arranged above the dust removal fan, and the fan lug plate is connected with the connection lug plate through a bolt.
7. The de-dusting fan transfer system of claim 1 wherein the fan drive is a hydraulic cylinder having a telescoping end connected to the fan slide and a fixed end detachably connected to the rail assembly at the proximal end of the de-dusting fan in the forward direction.
8. The dust removal fan moving system as claimed in any one of claims 1 to 7, wherein an air outlet of the dust removal fan is further connected with an air duct, at least two air duct sliding members are connected above the air duct, and the air duct sliding members are erected on the slide rails;
the air duct sliding piece is further connected with an air duct driving device and used for driving the air duct sliding piece to slide along the sliding rail.
9. The dust exhaust fan moving system as claimed in claim 8, wherein the air duct driving device comprises a twisted rope, a guide wheel and a winch, one end of the twisted rope is connected with the air duct sliding member, and the other end of the twisted rope is connected to the winch after passing around the guide wheel.
10. The de-dusting fan removal system of claim 8, wherein the slide rail comprises two rails arranged side-by-side;
every dryer sliding part includes rings and two dryer gyro wheels, the lower extreme of rings is connected the dryer, and the upper end is provided with the opening, two the dryer gyro wheel is rotationally installed respectively the open-ended both sides, and two the dryer gyro wheel erects respectively two on the track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020388650.9U CN211975040U (en) | 2020-03-24 | 2020-03-24 | Dust removal fan moves system of establishing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020388650.9U CN211975040U (en) | 2020-03-24 | 2020-03-24 | Dust removal fan moves system of establishing |
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| Publication Number | Publication Date |
|---|---|
| CN211975040U true CN211975040U (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020388650.9U Active CN211975040U (en) | 2020-03-24 | 2020-03-24 | Dust removal fan moves system of establishing |
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| CN (1) | CN211975040U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459828A (en) * | 2020-12-14 | 2021-03-09 | 三一重型装备有限公司 | Dust removal system of development machine |
| CN113914918A (en) * | 2021-11-09 | 2022-01-11 | 昆明理工大学 | Movable local ventilation system for ventilation operation of mine tunnel face |
-
2020
- 2020-03-24 CN CN202020388650.9U patent/CN211975040U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459828A (en) * | 2020-12-14 | 2021-03-09 | 三一重型装备有限公司 | Dust removal system of development machine |
| CN113914918A (en) * | 2021-11-09 | 2022-01-11 | 昆明理工大学 | Movable local ventilation system for ventilation operation of mine tunnel face |
| CN113914918B (en) * | 2021-11-09 | 2024-01-30 | 昆明理工大学 | Movable local ventilation system for ventilation operation of mine face |
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