WO2021197069A1

WO2021197069A1 - Dust suppression spraying apparatus for use on fully-mechanized coal-mining face and working method for apparatus

Info

Publication number: WO2021197069A1
Application number: PCT/CN2021/081299
Authority: WO
Inventors: 齐继阳; 徐永铭; 汪跃庭; 苏世杰; 罗生华; 刘亮; 李铁柱
Original assignee: 江苏科技大学
Priority date: 2020-03-30
Filing date: 2021-03-17
Publication date: 2021-10-07
Also published as: CN111255451A; CN111255451B

Abstract

A dust suppression spraying apparatus for use on a fully-mechanized coal-mining face, comprising a moving part (1) having two degrees of freedom, a ball head (2), and a nozzle (3). The dust suppression spraying apparatus for use on a fully-mechanized coal-mining face uses one nozzle to implement dust suppression spraying of dust at any position within the entire range of the fully-mechanized coal-mining face, and avoids the shortcomings of a staggered clutter of connecting pipes and increased costs due to the employment of multiple nozzles. With pressurized air and pressurized water coming into full contact, a mist of extremely small granularity is easily formed, thus increasing a dust suppression effect, the magnitude of the granularity of the mist no longer relies on the size of the nozzle, thus avoiding the flaw of an insufficiently large nozzle opening resulting in the nozzle opening being prone to clogging.

Description

Spray dust reduction device for fully mechanized mining face and working method thereof

Technical field

The invention relates to a spray dust reduction device, in particular to a spray dust reduction device on a large-scale operation site.

Background technique

Coal is currently one of the most important energy sources in my country. However, due to the complex working conditions and poor operating environment of coal mines, safety accidents often occur, causing significant losses to society and families.

With the increase in coal mining intensity, mining depth and mechanization, more and more dust is generated during coal mining. The existence of dust seriously threatens the health of underground personnel and the safety of mines. In order to meet the safety of mines and mines The demand for green mine construction requires effective prevention and control of dust in underground coal mines. Fully-mechanized mining face is the main source of dust generation and must be the focus of dust prevention and control.

The main equipment of the fully mechanized mining face includes coal shearers, scraper conveyors, and hydraulic supports. At present, most fully mechanized mining faces use spraying to reduce dust. Due to the large span of the fully mechanized mining face, in order to ensure that the dust in any space is For spray dust reduction, one nozzle is installed on each hydraulic support. The installation of many nozzles causes the pipeline system to be extremely complicated, increase the cost, and increase the pipeline joints. It is easy to cause leakage and affect the effect of spray dust reduction. The nozzles are not equipped with water mist cavity, and the water mist is formed solely by the slender nozzle mouth. The particle size of the water mist is larger. In order to reduce the particle size of the water mist, a smaller nozzle mouth is generally used, and the smaller nozzle mouth is in use. It is easy to form a blockage.

Summary of the invention

The invention provides a spray dust reduction device for a fully mechanized mining face, which has a simple structure, is not easy to be blocked, and can realize omnidirectional spray dust reduction of a fully mechanized mining face.

In order to achieve the above objectives, the technical solutions adopted by the present invention are:

A spray dust suppression device for a fully mechanized coal mining face includes a two-degree-of-freedom moving part, a pan/tilt and a nozzle; the two-degree-of-freedom moving part includes a left upright column, a steel wire rope, a horizontal moving component, a right upright column, a platform, and a vertical moving component. The left upright post and the right upright post are arranged in parallel, the steel wire rope is arranged between the left upright post and the right upright post, the horizontal moving assembly is arranged on the steel wire rope and can move along the steel wire rope, and the vertical The moving component is installed on the horizontal moving component and can move in a direction perpendicular to the steel wire rope, the platform is installed on the vertical moving component; the pan/tilt head includes a pitching component and a horizontal rotating component, the pitching component Installed on the horizontal rotation assembly can be pitched relative to the horizontal rotation assembly, the horizontal rotation assembly is installed on the platform and can rotate relative to the platform; the spray head is installed on the pitch of the pan/tilt On the assembly, the spray head is provided with a high-pressure water nozzle connected with high-pressure water and a high-pressure air nozzle connected with high-pressure air.

Further, the two-degree-of-freedom moving component further includes a tensioning wheel assembly, the upper and lower sides of the left upright column and the right upright column are symmetrically installed with the tensioning wheel assembly, and the two steel wire ropes are respectively tensioned Between the tensioning components on the upper and lower parts of the left upright and the right upright.

Further, the horizontal movement assembly includes a support plate, a drive mechanism and a guide mechanism. The drive mechanism is installed on the upper part of the support plate, and the guide mechanism is installed on the upper and lower parts of the support plate. The support plate includes a front panel and a rear panel arranged in parallel. The driving mechanism includes a horizontal traction belt, a first pulley, a second pulley, a horizontal motor, a traveling roller shaft and a traveling roller, the traveling roller shaft is rotatably mounted on the support plate, and the traveling roller shaft The first pulley and the traveling roller are installed, the traveling roller is located between the front panel and the rear panel, the horizontal motor is installed on the support plate, and the output shaft of the horizontal motor The second pulley is installed, the first pulley and the second pulley are connected by the horizontal traction belt, the guide mechanism includes a walking guide wheel shaft and a walking guide wheel, the walking guide shaft is fixedly installed at the station On the supporting plate, the walking guide wheel is rotatably mounted on the walking guide wheel shaft and is located between the front panel and the rear panel, and the walking roller and the walking guide wheel are erected on the Said on the wire rope.

Further, the vertical movement assembly includes a roller assembly, a vertical traction belt, a vertical guide rod, a linear bearing and a vertical motor, the roller assembly includes a roller, a roller shaft and a roller assembly bracket, and the roller is rotatable by the roller shaft The two vertical guide rods are mounted on the horizontal moving assembly in parallel, and the two roller assemblies are respectively installed on the horizontal moving assembly and are located on the two vertical guides. In the middle position of the two ends of the rod, the roller shaft of one of the roller assemblies is in transmission connection with the vertical motor, the vertical traction belt is installed between the rollers of the two roller assemblies, and the two The linear bearings are installed on the vertical guide rods, and the platform is installed on the linear bearings and fixedly connected with the vertical traction belt.

Further, the horizontal rotation assembly includes a horizontal rotation motor, a worm, a slewing bearing, and a support frame. The worm is mounted on the support frame and is in transmission connection with the horizontal rotation motor. The inner ring of the slewing bearing is fixedly mounted on the support frame. On the bottom surface of the support frame, the outer ring of the slewing bearing is machined with a worm wheel, the worm wheel on the outer ring of the slewing bearing meshes with the worm, the support frame is fixedly mounted on the platform, and the The pitch assembly is installed on the outer ring of the slewing bearing.

Further, the pitch assembly includes a mounting plate, a nozzle mounting plate, a pitch shaft, a first gear, a second gear, a steering gear, and a nozzle fixing clip, the pitch shaft is mounted on the mounting plate, and one end of the pitch shaft The first gear is installed, the first gear is meshed with the second gear, the second gear is in transmission connection with the steering gear, and the nozzle mounting plate is fixed at the middle position of the pitch axis, so The spray head fixing clip is installed on the spray head installation plate, the installation plate is installed on the rotating assembly, and the spray head is fixed in the spray head fixing clip.

Further, the spray head includes a nozzle head, a sealing ring and a nozzle seat, the nozzle head, the sealing ring and the nozzle seat are connected together by screws, and the sealing ring is located between the nozzle head and the nozzle seat. In between, the front end of the nozzle head has several nozzle openings, the rear end of the nozzle head is a water mist cavity, and the nozzle seat is provided with the high-pressure water nozzle and the high-pressure air nozzle.

Further, the tensioning wheel assembly includes a tension spring, a tensioning wheel mounting frame, a tensioning wheel shaft and a tensioning wheel, the tensioning wheel bracket is provided with a long hole slot, and both ends of the tensioning wheel shaft can be It is slidably arranged in the elongated hole, the tension wheel is installed on the tension wheel shaft, and the tension spring is provided between the tension wheel shaft and the tension wheel mounting frame.

The present invention also provides a working method of the above-mentioned spray dust suppression device for a fully mechanized mining face. The steps are as follows:

First, the nozzle sprays water mist under the action of high-pressure water and high-pressure air. By controlling the amount of high-pressure water intake and the intake of high-pressure air, the size of the water mist particles and the intensity of the water mist can be adjusted;

Second, when the horizontal movement component moves along the steel wire rope, the horizontal movement component drives the vertical movement component and the platform and the pan/tilt to move, thereby driving the spray head to move along the steel wire rope to achieve Spray dust at any position in the horizontal direction on the fully mechanized mining face;

Third, when the vertical moving assembly moves in a direction perpendicular to the steel wire rope, it can drive the platform and the pan/tilt to move, thereby driving the sprinkler head to move perpendicularly to the steel wire rope to achieve a fully mechanized mining face Spray dust at any position in the vertical direction;

Fourth, the rotating action of the horizontal rotating component can drive the pitch component to rotate, thereby driving the nozzle to rotate, changing the spray direction of the nozzle, and realizing multi-directional spraying and dust reduction at any position in the fully mechanized mining face;

Fifth, the pitching action of the pitching assembly can drive the spray head to do the same pitching action, changing the spraying angle of the spraying head, and realizing omnidirectional spraying and dust reduction at any position in the fully mechanized mining face.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. The use of one nozzle realizes the spraying of dust at any position in the entire range of the fully mechanized mining face, avoiding the staggered mess of connecting pipelines and high cost caused by the use of multiple nozzles.

2. The use of one nozzle avoids the increase of pipeline joints, greatly reduces leakage, saves water and air consumption, and greatly improves the effect of spraying and reducing dust.

3. In the present invention, the nozzle is installed on the pan-tilt, the pitch angle and the horizontal rotation angle of the nozzle can be adjusted during the spraying process, which expands the spray dust reduction range of the nozzle.

4. The water mist cavity inside the nozzle makes the high-pressure air and high-pressure water fully contact, and it is easy to form a very small particle size water mist, which improves the dust reduction effect. The size of the water mist does not depend on the size of the nozzle orifice, avoid The small nozzle opening easily leads to the disadvantage of easy clogging of the nozzle opening.

Description of the drawings

Figure 1 is a schematic diagram of an embodiment of the present invention;

Figure 2 is an enlarged view of A in Figure 1;

Fig. 3 is a schematic structural diagram of a two-degree-of-freedom moving component in an embodiment of the present invention;

Figure 4 is an enlarged view of B in Figure 3

FIG. 5 is a schematic diagram of the structure of a horizontal moving component in an embodiment of the present invention;

Figure 6 is a front view of a horizontal moving component in an embodiment of the present invention;

Figure 7 is a cross-sectional view taken along line A-A of Figure 6;

Figure 8 is a rear view of a horizontally moving component in an embodiment of the present invention;

9 is a schematic diagram of the structure of the support plate in the embodiment of the present invention;

FIG. 10 is a schematic diagram of the structure of a vertical moving component in an embodiment of the present invention;

11 is a schematic diagram of the structure of the tension wheel assembly in the embodiment of the present invention;

Figure 12 is a schematic diagram of the structure of the tension wheel mounting frame in the embodiment of the present invention;

13 is a schematic diagram of the structure of the roller assembly in the embodiment of the present invention;

Figure 14 is a schematic diagram of the structure of a pan-tilt in an embodiment of the present invention;

15 is a schematic diagram of the structure of the pitch assembly in the embodiment of the present invention;

16 is a schematic diagram of the structure of the horizontal rotation assembly in the embodiment of the present invention;

Figure 17 is a top view of a horizontal rotating component in an embodiment of the present invention;

Figure 18 is a view A-A of Figure 17;

Figure 19 is a view B-B of Figure 18;

20 is a schematic diagram of the structure of the spray head in the embodiment of the present invention;

Figure 21 is a front view of a full cross-section of the nozzle structure in the embodiment of the present invention;

Figure 22 is a left view of the spray head in the embodiment of the present invention;

Among them, 1. Two-degree-of-freedom moving parts; 2. PTZ; 3. Nozzle;

101. Left upright column; 102. Tensioner assembly; 103. Steel wire rope; 104. Horizontal movement assembly; 105. Right upright column; 106. Platform; 107. Vertical movement assembly;

1071, T-type light bar mounting seat; 1072, roller assembly; 1073, vertical traction belt; 1074, vertical guide rod; 1075, linear bearing; 1076, vertical motor;

1021, Tension spring; 1022, Tension wheel mounting frame; 1023, Spring hook; 1024, Tension wheel shaft; 1025, Tension wheel; 1022.1, Long hole slot;

1072.1, roller; 1072.2, roller shaft 1072.3, roller assembly bracket;

1041, support plate; 1042, horizontal traction belt; 1043.1, first pulley; 1043.2, second pulley; 1044, walking guide wheel shaft; 1045, walking guide wheel; 1046, horizontal motor; 1047, walking roller shaft; 1048, walking roller 1041.1, front panel; 1041.2, rear panel; 1041.3, middle groove; 1041.4, rectangular hole; 1041.5, walking roller shaft mounting hole; 1041.6, walking guide wheel shaft mounting hole;

21. Pitch assembly; 23. Horizontal rotation assembly;

211. Mounting plate; 212, bearing with seat; 213, nozzle mounting plate; 214, pitch axis; 215.1, first gear; 215.2, second gear; 216, steering gear; 217, steering gear mounting frame; 218, nozzle fixing folder;

231. Horizontal rotating motor; 232, left bearing seat, 233, right bearing seat, 234, worm; 235, slewing bearing; 236, support frame; 238, flat key; 239, cylindrical roller bearing;

31. Nozzle head; 32, sealing ring, 33, nozzle seat; 311, water mist cavity, 312, nozzle opening; 331, high pressure water nozzle, 332, high pressure air nozzle.

Detailed ways

The technical solution of the present invention will be further described below in conjunction with the drawings and specific embodiments.

As shown in Figures 1 and 2, it is a spray dust reduction device for fully mechanized mining face of the present invention, which includes a two-degree-of-freedom moving part 1, a pan-tilt 2 and a nozzle 3, and the pan-tilt 2 can drive the nozzle 3 Performing horizontal rotation and pitching movement, the pan/tilt head 2 is installed on the platform 106 of the two-degree-of-freedom moving part 1, and the two-degree-of-freedom moving part 1 can drive the pan/tilt head 2 in the horizontal and vertical directions Exercise to achieve spray dust reduction at different locations on the fully mechanized mining face.

As shown in FIG. 3, the two-degree-of-freedom moving component 1 includes a left column 101, a steel wire 103, a horizontal moving component 104, a right column 105, a platform 106, and a vertical moving component 107. The left column 101 and the right column 105 Arranged in parallel, the wire rope 103 is arranged between the left upright column 101 and the right upright column 105, and the left upright column 101, the right upright column 105 and the steel wire rope 103 constitute the two-degree-of-freedom moving part 1 Supporting the frame, the horizontal moving component 104 is arranged on the steel wire rope 103 and can move along the steel wire 103, and the vertical moving component 107 is installed on the horizontal moving component 104 and can move along the direction perpendicular to the steel wire 103 To move, the platform 106 is installed on the vertical moving assembly 107.

As shown in FIG. 14, the pan/tilt head 2 includes a pitch assembly 21 and a horizontal rotation assembly 23. The pitch assembly 21 is mounted on the horizontal rotation assembly 23 and can be tilted relative to the horizontal rotation assembly 23. The rotating assembly 23 is installed on the platform 106 and can rotate relative to the platform 106.

As shown in Figure 20, the spray head 3 is installed on the tilt assembly 21 of the pan/tilt head 2. The spray head 3 is provided with a high-pressure water nozzle 331 connected to high-pressure water and a high-pressure air nozzle connected to high-pressure air 332.

As shown in Figures 3 and 4, the two-degree-of-freedom moving component 1 further includes a tensioning wheel assembly 102. The upper and lower sides of the left upright 101 and the right upright 105 are symmetrically installed with the tensioner. The wheel assembly 102, the two steel ropes 103 are tensioned between the tension assembly 102 on the upper and lower parts of the left upright 101 and the right upright 105, respectively.

As shown in Figures 5 to 9, the horizontal movement assembly 104 includes a support plate 1041, a drive mechanism and a guide mechanism. The drive mechanism is installed on the upper part of the support plate 1041, and the guide mechanism is installed on the upper and lower parts of the support plate 1041. The support plate 1041 includes a front panel 1041.1 and a rear panel 1041.2 arranged in parallel. The driving mechanism includes a horizontal traction belt 1042, a first pulley 1043.1, a second pulley 1043.2, a horizontal motor 1046, a traveling roller shaft 1047, and a traveling roller 1048. The traveling roller shaft 1047 passes through the traveling roller shaft mounting holes 1041.5 of the front panel 1041.1 and the rear panel 1041.2 on the upper part of the support plate 1041, and is rotatably installed on the support plate 1041. The traveling roller shaft 1047 is connected to the traveling roller shaft. There is a clearance fit between the mounting holes 1041.5, the first pulley 1043.1 and the traveling roller 1048 are installed on the traveling roller shaft 1047, and the traveling roller 1048 and the traveling roller shaft 1047 are fixed circumferentially by a key, and Located in the middle slot 1041.3 between the front panel 1041.1 and the rear panel 1041.2, the horizontal motor 1046 passes through the rectangular hole 1041.4 on the front panel 1041.1, and is fixedly installed on the rear panel 1041.2 of the support plate 1041 Above, the second pulley 1043.2 is installed on the output shaft of the horizontal motor 1046 through a key, and the first pulley 1043.1 and the second pulley 1043.2 are drivingly connected by the horizontal traction belt 1042, and the guide mechanism includes The walking guide wheel shaft 1044 and the walking guide wheel 1045, the walking guide shaft 1044 is fixedly mounted on the support plate 1041, and the walking guide shaft 1044 passes through the upper and lower front panel 1041.1 and the rear panel 1041.2 of the support plate 1041, respectively The walking guide wheel shaft mounting hole 1041.6 is an interference fit between the walking guide wheel shaft 1044 and the walking guide wheel shaft mounting hole 1041.6. The walking guide wheel 1045 is rotatably mounted on the walking guide wheel shaft 1044 and is located In the intermediate groove 1041.3 between the front panel 1041.1 and the rear panel 1041.2, the traveling roller 1048 and the traveling guide wheel 1045 are erected on the steel wire 103.

When the horizontal motor 1046 rotates, it drives the first pulley 1043.1 installed on the output shaft of the horizontal motor 1046 to rotate, and then drives the first pulley 1043.1 installed on the walking roller shaft 1047 through the horizontal traction belt 1042. The second pulley 1043.2 rotates, the rotation of the second pulley 1043.2 drives the traveling roller shaft 1047 to rotate, and the rotation of the traveling roller shaft 1047 drives the rotation of the traveling roller 1048. The rotation of the walking roller 1048 and the guidance of the walking guide wheel 1045 realize that the horizontal moving assembly 104 can move on the steel wire 103 in a horizontal direction.

As shown in Figures 10 and 13, the vertical moving assembly 107 includes a roller assembly 1072, a vertical traction belt 1073, a vertical guide rod 1074, a linear bearing 1075 and a vertical motor 1076, and the roller assembly 1072 includes a roller 1072.1, a roller shaft 1072.2 and the roller assembly bracket 1072.3, the roller 1072.1 is rotatably mounted on the roller assembly bracket 1072.3 through the roller shaft 1072.2, and the two vertical guide rods 1074 are installed in parallel through the T-shaped light bar mounting seat 1071 On the support plate 1041 of the horizontal movement assembly 104, two roller assemblies 1072 are respectively installed on the upper and lower ends of the support plate 1041 of the horizontal movement assembly 104, and are located on the two vertical guide rods. In the middle positions of the two ends of 1074, the roller shaft 1072.2 of one of the roller assemblies 1072 is in transmission connection with the vertical motor 1076, and the vertical traction belt is installed between the rollers 1072.1 of the two roller assemblies 1072 1073, the linear bearings 1075 are installed on the two vertical guide rods 1074, the platform 106 is installed on the linear bearings 1075 and is fixedly connected with the vertical traction belt 1073, the vertical motor 1076 passes through the motor The mounting bracket is installed at the lower end of the support plate 1041, and the output shaft of the vertical motor 1076 is connected to the roller shaft 1072.2 of the roller assembly 1072 installed at the lower end of the support plate 1041 through a coupling. When the vertical motor 1076 rotates, it drives the roller shaft 1072.2 of the roller assembly 1072 installed at the lower end of the support plate 1041 to rotate, and the rotation of the roller shaft 1072.2 drives the roller 1072.1 installed on it to rotate , Thereby driving the vertical traction belt 1073 to rotate, and the rotation of the vertical traction belt 1073 drives the platform 106 fixed thereto to move up and down along the vertical guide rod 1074.

As shown in Figures 16 to 19, the horizontal rotation assembly 23 includes a horizontal rotation motor 231, a worm 234, a slewing bearing 235 and a support frame 236. The worm 234 is fixedly mounted on a left bearing seat 232 and a right bearing seat 233. The support frame 236 is in transmission connection with the horizontal rotating motor 231, and there is a cylindrical roller bearing 239 between the worm 234 and the left bearing seat 232 and the right bearing seat 233. The inner ring of the slewing bearing 235 is fixed Installed on the bottom surface of the support frame 236, the outer ring of the slewing bearing 235 is machined with a worm wheel, the worm wheel on the outer ring of the slewing bearing 235 meshes with the worm 234, and the support frame 236 is fixedly mounted on On the platform 106, the pitch assembly 21 is mounted on the outer ring of the slewing bearing 235, the horizontal rotating motor 231 is fixedly mounted on the left bearing 232, and the output shaft of the horizontal rotating motor 231 is connected to the The worm 234 is fixedly connected in a circumferential direction by a flat key 238.

When the horizontal rotating motor 231 rotates, it drives the worm 234 to rotate. The worm 234 rotates to drive the outer ring of the slewing bearing 235 to rotate horizontally. The pitch assembly 21 rotates horizontally together.

As shown in Figure 15, the pitch assembly 21 includes a mounting plate 211, a nozzle mounting plate 213, a pitch shaft 214, a first gear 215.1, a second gear 215.2, a steering gear 216, and a nozzle fixing clamp 218. The pitch shaft 214 passes A seated bearing 212 is mounted on the mounting plate 211, one end of the pitch shaft 214 is mounted with the first gear 215.1, the first gear 215.1 meshes with the second gear 215.2, and the second gear 215.2 It is in transmission connection with the steering gear 216, the steering gear 216 is mounted on the mounting plate 211 through the steering gear mounting frame 217, the second gear 215.2 is mounted on the output shaft of the steering gear 216, and the second gear 215.2 is mounted on the output shaft of the steering gear 216. The transmission ratio between a gear 215.1 and the second gear 215.2 is 1:1, the nozzle mounting plate 213 is fixed at the middle position of the pitch axis 214, and the nozzle fixing frame 218 is mounted on the nozzle mounting plate 213, the mounting plate 211 is mounted on the rotating assembly 23, and the spray head 3 is fixed in the spray head fixing clamp 218.

When the steering gear 216 swings, the pitch axis 214 and the nozzle mounting plate 213 fixedly mounted on the pitch axis 214 are driven by a gear mechanism to pitch, and the nozzle mounting plate 213 is mounted on it by the pitch drive The nozzle 3 is pitched.

As shown in Figures 20 to 22, the spray head 3 includes a nozzle head 31, a sealing ring 32 and a nozzle seat 33. The nozzle head 31, the sealing ring 32 and the nozzle seat 33 are connected together by screws. The sealing ring 32 is located between the nozzle head 31 and the nozzle seat 33, the front end of the nozzle head 31 has a number of nozzle openings 312, the rear end of the nozzle head 31 is a water mist cavity 311, and the nozzle seat 33 is The high-pressure water nozzle 331 and the high-pressure air nozzle 332 are provided.

As shown in Figures 11 and 12, the tension wheel assembly 102 includes a tension spring 1021, a tension wheel mounting frame 1022, a tension wheel shaft 1024, and a tension wheel 1025. The tension wheel bracket 1022 is provided with a long The two ends of the tension wheel shaft 1024 are slidably arranged in the elongated hole groove 1022.1, the tension wheel 1025 is mounted on the tension wheel shaft 1024, and the tension wheel shaft 1024 The tension spring 1021 is provided between the tension wheel mounting frame 1022 and the tension wheel mounting frame 1022.

Both the tension wheel shaft 1024 and the tension wheel mounting frame 1022 are fixedly connected to the spring hook 1023, and the tension spring 1021 is connected between the corresponding spring hooks 1023. Under the action of the tension spring 1021, the tension wheel shaft 1024 can move in the elongated hole 1022.1, so that the steel wire 103 installed between the tension wheels 1025 maintains a constant tension.

The working method of a spray dust suppression device for a fully mechanized mining face of the present invention, the specific steps are:

First, the nozzle 3 sprays water mist under the action of high-pressure water and high-pressure air. By controlling the amount of high-pressure water inflow and the amount of high-pressure air inflow, the size of the water mist particles and the intensity of the water mist can be adjusted. ；

Second, when the horizontal moving component 104 moves along the wire rope 103, the horizontal moving component 104 drives the vertical moving component 107, the platform 106 and the platform 2 to move, thereby driving the spray head 3 along The wire rope 103 moves to realize spray dust reduction at any position in the horizontal direction on the fully mechanized mining face;

Third, when the vertical moving assembly 107 moves in a direction perpendicular to the steel wire rope 103, it can drive the platform 106 and the pan/tilt head 2 to move, thereby driving the spray head 3 to move perpendicular to the steel wire rope 103. Realize spray dust reduction at any position in the vertical direction of fully mechanized mining face;

Fourth, the rotating action of the horizontal rotating assembly 23 can drive the pitch assembly 21 to rotate, thereby driving the nozzle 3 to rotate, changing the spray direction of the nozzle 3, and realizing multi-direction at any position in the fully mechanized mining face Spray dust

Fifth, the pitching action of the pitching assembly 21 can drive the spray head 3 to do the same pitching action to change the spray angle of the spray head 3 to achieve omnidirectional spray dust reduction at any position in the fully mechanized mining face.

When the dust concentration of the fully mechanized mining face is greater than the threshold value, the spray will be driven immediately;

When the dust concentration of the fully mechanized mining face is less than the threshold value, stop spraying and move the nozzle to another position;

The above are only the preferred specific embodiments of the present invention. Of course, the present invention can also have various other embodiments. Without departing from the spirit and essence of the present invention, any person skilled in the art can make various corresponding changes and modifications according to the present invention. All technical solutions formed by equivalent replacements or equivalent transformations shall fall within the protection scope of the appended claims of the present invention.

Claims

A spray dust suppression device for a fully mechanized mining face, which is characterized by comprising a two-degree-of-freedom moving part (1), a cloud platform (2) and a nozzle (3);

The two-degree-of-freedom moving component (1) includes a left upright (101), a steel wire (103), a horizontal moving component (104), a right upright (105), a platform (106) and a vertical moving component (107), the left The upright column (101) and the right upright column (105) are arranged in parallel, the steel wire rope (103) is arranged between the left upright column (101) and the right upright column (105), and the horizontal moving assembly (104) is arranged On the steel wire rope (103) and movable along the steel wire rope (103), the vertical movement assembly (107) is installed on the horizontal movement assembly (104) and can be along a direction perpendicular to the steel wire rope (103) Moving, the platform (106) is installed on the vertical moving assembly (107);

The pan/tilt head (2) includes a pitch component (21) and a horizontal rotation component (23). The pitch component (21) is mounted on the horizontal rotation component (23) and can be relative to the horizontal rotation component (23). ) Pitching, the horizontal rotation assembly (23) is installed on the platform (106) to be rotatable relative to the platform (106);

The nozzle (3) is installed on the pitch assembly (21) of the pan/tilt (2), and the nozzle (3) is provided with a high-pressure water nozzle (331) for connecting high-pressure water and a high-pressure air nozzle (331). High pressure air connector (332).
The spray dust suppression device for a fully mechanized mining face according to claim 1, wherein the two-degree-of-freedom moving part (1) further comprises a tensioner assembly (102), the left upright (101) and The tension wheel assembly (102) is symmetrically installed on the upper and lower sides of the right upright column (105), and the two steel wire ropes (103) are respectively tensioned on the left upright column (101) and the right Between the tension components (102) at the upper and lower parts of the upright column (105).
The spray dust suppression device for a fully mechanized mining face according to claim 1, wherein the horizontal moving assembly (104) comprises a support plate (1041), a driving mechanism and a guide mechanism, and the driving mechanism is installed on the support plate (1041). 1041), the guide mechanism is installed on the upper and lower parts of the support plate (1041), the support plate (1041) includes a front panel (1041.1) and a rear panel (1041.2) arranged in parallel, the drive mechanism includes a horizontal traction belt (1042), the first pulley (1043.1), the second pulley (1043.2), the horizontal motor (1046), the traveling roller shaft (1047) and the traveling roller (1048), the traveling roller shaft (1047) is rotatably installed on On the support plate (1041), the first pulley (1043.1) and the traveling roller (1048) are installed on the traveling roller shaft (1047), and the traveling roller (1048) is located on the front panel ( 1041.1) and the rear panel (1041.2), the horizontal motor (1046) is installed on the support plate (1041), and the second pulley (1046) is installed on the output shaft of the horizontal motor (1046) 1043.2), the first pulley (1043.1) and the second pulley (1043.2) are drivingly connected by the horizontal traction belt (1042), and the guide mechanism includes a walking guide wheel shaft (1044) and a walking guide wheel (1045) , The walking guide shaft (1044) is fixedly installed on the support plate (1041), and the walking guide wheel (1045) is rotatably installed on the walking guide wheel shaft (1044), and is located at the front Between the panel (1041.1) and the rear panel (1041.2), the walking roller (1048) and the walking guide wheel (1045) are erected on the steel wire rope (103).
The spray dust suppression device for a fully mechanized mining face according to claim 1, wherein the vertical moving assembly (107) includes a roller assembly (1072), a vertical traction belt (1073), and a vertical guide rod (1074). ), a linear bearing (1075) and a vertical motor (1076), the roller assembly (1072) includes a roller (1072.1), a roller shaft (1072.2) and a roller assembly bracket (1072.3), the roller (1072.1) passes through the roller The shaft (1072.2) is rotatably installed on the roller assembly bracket (1072.3), and the two vertical guide rods (1074) are installed in parallel on the horizontal moving assembly (104); located on the two vertical guides In the middle position of the two ends of the rod (1074), one of the roller shafts (1072.2) of the roller assembly (1072) is drivingly connected to the vertical motor (1076), and the two roller assemblies (1072) are The vertical traction belt (1073) is installed between the rollers (1072.1), the linear bearing (1075) is installed on the two vertical guide rods (1074), and the platform (106) is installed on the linear The bearing (1075) is fixedly connected with the vertical traction belt (1073).
The spray dust suppression device for a fully mechanized mining face according to claim 1, wherein the horizontal rotating assembly (23) includes a horizontal rotating motor (231), a worm (234), a slewing bearing (235) and The support frame (236), the worm (234) is mounted on the support frame (236) and is in transmission connection with the horizontal rotating motor (231), and the inner ring of the slewing bearing (235) is fixedly mounted on the support On the bottom surface of the frame (236), the outer ring of the slewing bearing (235) is machined with a worm gear, the worm wheel on the outer ring of the slewing bearing (235) is meshed with the worm (234), and the support frame ( 236) is fixedly installed on the platform (106), and the pitch assembly (21) is installed on the outer ring of the slewing bearing (235).
The spray dust suppression device for a fully mechanized mining face according to claim 1, wherein the pitch assembly (21) includes a mounting plate (211), a nozzle mounting plate (213), a pitch axis (214), and a A gear (215.1), a second gear (215.2), a steering gear (216) and a nozzle fixing clip (218), the pitch axis (214) is mounted on the mounting plate (211), and the pitch axis (214) ) Is installed with the first gear (215.1) at one end, the first gear (215.1) meshes with the second gear (215.2), and the second gear (215.2) drives with the steering gear (216) Connected, the nozzle mounting plate (213) is fixed at the middle position of the pitch axis (214), the nozzle fixing clip (218) is mounted on the nozzle mounting plate (213), the mounting plate (211) It is installed on the rotating assembly (23), and the spray head (3) is fixed in the spray head fixing clamp (218).
The spray dust suppression device for a fully mechanized mining face according to claim 1, wherein the nozzle (3) comprises a nozzle head (31), a sealing ring (32) and a nozzle seat (33), and the nozzle head (31). The sealing ring (32) and the nozzle seat (33) are connected together by screws, and the sealing ring (32) is located between the nozzle head (31) and the nozzle seat (33) There are several nozzle openings (312) at the front end of the nozzle head (31), the rear end of the nozzle head (31) is a water mist cavity (311), and the nozzle seat (33) is provided with the high-pressure water connection Nozzle (331) and the high-pressure air nozzle (332).
The spray dust suppression device for a fully mechanized mining face according to claim 2, wherein the tension wheel assembly (102) includes a tension spring (1021), a tension wheel mounting frame (1022), and a tensioner Axle (1024) and a tensioning wheel (1025), the tensioning wheel bracket (1022) is provided with an elongated hole (1022.1), and both ends of the tensioning wheel shaft (1024) are slidably arranged on the In the elongated hole (1022.1), the tension wheel (1025) is installed on the tension wheel shaft (1024), between the tension wheel shaft (1024) and the tension wheel mounting frame (1022) The tension spring (1021) is provided.
The working method of a spray dust suppression device for a fully mechanized mining face according to any one of claims 1 to 8, characterized in that it comprises the following steps:

First, the nozzle (3) sprays water mist under the action of high-pressure water and high-pressure air. By controlling the amount of high-pressure water inflow and the amount of high-pressure air inflow, the size of the water mist particles and the strength of the water mist can be controlled. adjust;

Second, when the horizontal moving component (104) moves along the wire rope (103), the horizontal moving component (104) drives the vertical moving component (107), the platform (106) and the pan/tilt (2) Move, so as to drive the nozzle (3) to move along the wire rope (103) to achieve spray dust reduction at any position in the horizontal direction on the fully mechanized mining face;

Third, when the vertical moving assembly (107) moves in a direction perpendicular to the steel wire rope (103), it can drive the platform (106) and the pan/tilt (2) to move, thereby driving the spray head (3). ) Move along the direction perpendicular to the steel wire rope (103) to achieve spray dust reduction at any position in the vertical direction of the fully mechanized mining face;

Fourth, the rotation action of the horizontal rotation component (23) can drive the pitch component (21) to rotate, thereby driving the nozzle (3) to rotate, changing the spray direction of the nozzle (3), and realizing the work in fully mechanized mining Multi-directional spraying at any position in the plane to reduce dust;

Fifth, the pitching action of the pitching assembly (21) can drive the spray head (3) to do the same pitching action, changing the spraying angle of the spraying head (3), and realizing omni-directional spraying and dust reduction at any position in the fully mechanized mining face .