Full-section spraying dust removal device for underground roadway

Abstract

The invention relates to the technical field of coal mine dust removal facilities, in particular to an underground roadway full-section spraying dust removal device which is characterized in that a spraying pipe fitting comprises an outer sleeve, an inner sleeve, a spraying head mounted at the bottom of the outer sleeve and a pipe joint arranged on the rear wall of the outer end of the inner sleeve; the water supply connecting piece comprises a connecting shell, pipe sleeves arranged at the two ends of the front wall of the connecting shell and rotationally connected with the pipe joints in a sleeving mode, and a fixing frame connected with the top face of the shell. A plurality of first combination holes are formed in the inner side wall of the telescopic side frame in the vertical direction, and a first rotating shaft is arranged on the lower side of the middle of the front wall of the telescopic side frame. The outer end of a swing box of a telescopic groove structure is hinged to the bottom of the inner side wall of the telescopic side frame, the outer end of the front wall of the swing box is provided with a drain pipe head and a second rotating shaft, and the bottom face of an inner cavity of the swing box is provided with a second combination hole and a third combination hole. Two ends of the swinging cylinder are rotationally connected to the rotating shafts I and II respectively; the full-section spray dust removal of the underground coal mine roadway can be realized, the dust removal effect is improved, and spray water is collected so as to prevent a bottom plate of the roadway from being wet and slippery.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine dust removal facilities, in particular to a full-section spray dust removal device for an underground tunnel. Background Art

[0002] Coal dust is one of the five major natural disasters in coal mines and has always been the focus of prevention and control work in the coal industry. Dust causes great harm to coal mine workers and safe production: on the one hand, the dust-polluted working environment seriously harms the health of workers and can cause lung lesions and pneumoconiosis. On the other hand, excessive dust concentration poses a risk of explosion, and suspended coal dust is also one of the main causes of coal dust explosions in coal mines. In addition, high dust concentrations will accelerate the wear of mechanical equipment and shorten the service life of precision instruments. Therefore, strengthening the control of coal mine dust is particularly important to ensure the life and health of employees and prevent accidents.

[0003] For underground coal mines, the return air tunnel of the coal mining face and the tunnel in excavation are the main places where coal dust is generated. Generally, two spray dust removal devices need to be set up within a certain distance from the working face. In order to ensure that the tunnel has a certain passability, the current spray dust removal device in the underground tunnel is generally connected to a straight pipe or an arc pipe at the top of the tunnel through a fixed frame support. Multiple nozzles are installed on the straight pipe / arc pipe. One end of the straight pipe / arc pipe is connected to the water supply pipeline through a water pipe. When the water supply valve is opened, the water mist sprayed from the nozzle forms a water curtain to achieve the purpose of dust reduction. However, this way of setting the nozzle makes it difficult for the water curtain to cover the entire tunnel section, and the dust removal effect is not good; in addition, the spray water falls on the bottom plate of the tunnel, which easily causes the bottom plate to be slippery. Summary of the invention

[0004] The purpose of the present invention is to provide a full-section spray dust removal device for an underground tunnel, which is used to solve the problem in the prior art that the spray dust removal device in the underground tunnel of a coal mine is difficult to cover the full section of the tunnel, the dust removal effect is poor and it is easy to cause the tunnel floor to be slippery.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a full-section spray dust removal device for underground tunnels, the spray pipe comprising an outer sleeve, an inner sleeve slidably sleeved on both ends of the inner cavity of the outer sleeve, a spray head installed at the bottom of the outer sleeve, and a pipe joint fixedly sleeved on the rear wall of the outer end of the inner sleeve, the nozzle of the spray head is a strip-shaped seam structure; the water supply connector comprises a connecting shell, a pipe sleeve fixedly sleeved on both ends of the front wall of the connecting shell and rotatably sleeved with the pipe joint, and a fixing frame fixed to the top surface of the connecting shell; the inner side wall of the retractable side frame is vertically provided with a plurality of A combination hole 1 for installing a fixed frame is vertically sleeved on the lower middle side of the front wall of the retractable side frame with a rotating shaft 1; the swing box body is a retractable trough structure, the outer end of the swing box body is hinged to the inner wall of the retractable side frame near the bottom end, the bottom of the outer end of the front wall of the swing box body is sleeved with a drain pipe head, the front wall of the swing box body is vertically connected to a rotating shaft 2 at a position inside the drain pipe head, and the bottom surface of the inner cavity of the swing box body is provided with a combination hole 2 and a combination hole 3 for installing a fixed frame; the top end of the piston cylinder of the swing cylinder is rotatably sleeved on the rotating shaft 1 and the bottom end of the piston rod is rotatably sleeved on the rotating shaft 2.

[0006] Preferably, an ear seat is fixed to the inner side wall of the retractable side frame near the bottom end, and the swing box body includes an inner trough body slidably clamped in the inner cavity of the outer trough body, an ear plate fixed to the outer end of the outer trough body and rotatably connected to the ear seat, and a telescopic cylinder for pushing and pulling the inner trough body to slide relative to the outer trough body.

[0007] Preferably, an end plate 1 is fixed to the outer end of the inner cavity of the outer trough body, an end plate 2 is fixed to the inner end of the inner cavity of the inner trough body, an inner protective tube extending along the axial direction of the outer trough body is vertically fixed to the middle of one side wall of the end plate, an outer protective tube extending along the axial direction of the inner trough body and slidably mounted on the outside of the inner protective tube is vertically fixed to the middle of the side wall of the second end plate, the piston cylinder of the telescopic cylinder is fixedly mounted in the inner protective tube, the end of the piston rod of the telescopic cylinder is fixedly connected to the end plate 2, the combination hole 2 is provided on the bottom surface of the inner cavity of the outer trough body, the combination hole 3 is provided on the bottom surface of the inner cavity of the inner trough body, the drain pipe head and the second rotating shaft are respectively provided on the front wall of the outer trough body near the outer end.

[0008] Preferably, connecting sleeves are fixedly mounted on the bottom of the outer sleeve near both ends, and the top of the spray head can be detachably mounted in the connecting sleeves.

[0009] Preferably, a vertical plate is vertically fixed in the middle of the top surface of the connecting shell, and a support plate is vertically fixed to the top of the vertical plate. The support plate is provided with a through hole one near the four corners, and the four through holes one correspond to the combination hole one, combination hole two and combination hole three respectively.

[0010] Preferably, support frames are fixed to the bottom surface of the outer tank body near both ends.

[0011] Preferably, the retractable side frame includes a vertical shell and a vertical slat slidably mounted in the inner cavity of the vertical shell, a plurality of screw holes are vertically arranged on the inner wall of the vertical slat near the front and rear sides, and a positioning bolt matching the threaded mounting of the screw holes is sleeved on the inner wall of the vertical shell. The combination hole is vertically arranged at the center position of the vertical shell and the inner wall of the vertical slat, the rotating shaft is sleeved on the middle part of the front wall of the vertical shell, and the ear seat is fixed to the inner wall of the vertical shell near the bottom end.

[0012] Preferably, wing plates are respectively provided on the outer sides of the front and rear walls of the vertical shell, and a plurality of through holes are vertically provided on the upper sides of the wing plates.

[0013] Preferably, the top ends of the front and rear walls of the outer tank body and the inner tank body are respectively provided with outward-turned strips.

[0014] Preferably, a water sealing structure is provided between the pipe joint and the pipe sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention relates to a full-section spray dust removal device for an underground tunnel, in which a main part of the spray dust reduction is composed of a retractable spray pipe and a water supply connector that are rotatably connected, and the full-section spray setting can be realized in tunnels of different cross-section forms and in tunnels of different sizes.

[0017] 2. The present invention relates to a full-section spray dust removal device for an underground tunnel, in which the swing box can be flexibly folded to a retractable side frame and laid on the tunnel floor, which can not only collect and drain the spray water to avoid making the tunnel floor slippery, but also meet the passage needs of mine cars or personnel.

[0018] 3. The present invention relates to a full-section spray dust removal device for an underground tunnel, which facilitates installation of spray pipes on the tunnel roof, side and bottom plates, thereby achieving full-section coverage of the tunnel, thereby greatly improving the dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention as a whole;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the spray pipe of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the water supply connector of the present invention;

[0022] Figure 4It is a schematic diagram of the three-dimensional structure of the retractable side frame of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the swing box body of the present invention;

[0024] Figure 6 For the present invention Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0025] In the figure: 1-spray pipe fitting; 1.1-outer sleeve; 1.2-inner sleeve; 1.3-connecting sleeve; 1.4-spray head; 1.5-pipe joint;

[0026] 2-water supply connector; 2.1-connecting shell; 2.2-pipe sleeve; 2.3-vertical plate; 2.4-support plate; 2.4.1-perforation 1;

[0027] 3-retractable side frame; 3.1-vertical shell; 3.1.1-wing plate; 3.1.2-through hole 2; 3.2-vertical strip; 3.2.1-screw hole; 3.3-positioning bolt; 3.4-combination hole 1; 3.5-ear seat; 3.6-rotating shaft 1;

[0028] 4-swing box body; 4.1-outer tank body; 4.1.1-end plate 1; 4.1.2-combination hole 2; 4.2-inner tank body; 4.2.1-end plate 2; 4.2.2-combination hole 3; 4.3-ear plate; 4.4-rotating shaft 2; 4.5-drainage pipe head; 4.6-inner protective pipe; 4.7-outer protective pipe; 4.8-telescopic cylinder; 4.9-support frame;

[0029] 5- Swing cylinder. DETAILED DESCRIPTION

[0030] 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, not all of the embodiments. 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.

[0031] See also Figure 1-6 The present invention provides a technical solution, a full-section spray dust removal device for an underground tunnel, wherein a spray pipe 1 comprises an outer sleeve 1.1, an inner sleeve 1.2 slidably sleeved on both ends of the inner cavity of the outer sleeve 1.1, a spray head 1.4 installed at the bottom of the outer sleeve 1.1, and a pipe joint 1.5 fixedly sleeved on the rear wall of the outer end of the inner sleeve 1.2, wherein the nozzle of the spray head 1.4 is a strip seam structure; wherein a water sealing structure is provided between the pipe joint 1.5 and the pipe sleeve 2.2.

[0032] The water supply connector 2 includes a connecting shell 2.1, a pipe sleeve 2.2 fixedly mounted on both ends of the front wall of the connecting shell 2.1 and rotatably sleeved with the pipe joint 1.5, and a fixing frame fixed to the top surface of the connecting shell 2.1; wherein a vertical plate 2.3 is vertically fixed to the middle of the top surface of the connecting shell 2.1, and a support plate 2.4 is vertically fixedly connected to the top of the vertical plate 2.3, and a perforation 2.4.1 is respectively provided near the four corners of the support plate 2.4, that is, when the spray equipment is installed on the top plate of the tunnel, the water supply connector 2 is fixedly rooted on the supporting metal mesh, anchor rod head, anchor cable head or shed beam of the top plate of the tunnel by passing iron wire through the perforation 2.4.1. A K-type joint for mining is set between the pipe joint 1.5 and the pipe sleeve 2.2, and a U-type card connection is adopted to facilitate the rapid disassembly and assembly of the spray facility.

[0033] The inner wall of the retractable side frame 3 is vertically provided with a plurality of combination holes 3.4 for installing the fixed frame, and a rotating shaft 3.6 is vertically sleeved on the lower middle part of the front wall of the retractable side frame 3; wherein, the retractable side frame 3 comprises a vertical shell 3.1 and a vertical board 3.2 slidably sleeved in the inner cavity of the vertical shell 3.1, and a plurality of screw holes 3.2.1 are vertically provided near the front and rear sides of the inner wall of the vertical board 3.2, and a positioning bolt 3.3 matching the threaded sleeve of the screw hole 3.2.1 is sleeved on the inner wall of the vertical shell 3.1, and the combination hole 3.4 is vertically arranged at the center position of the inner wall of the vertical shell 3.1 and the vertical board 3.2, the rotating shaft 3.6 is sleeved in the middle part of the front wall of the vertical shell 3.1, and the ear seat 3.5 is fixed to the inner wall of the vertical shell 3.1 near the bottom end. The outer sides of the front and rear walls of the vertical housing 3.1 are provided with wing plates 3.1.1 respectively, and a plurality of through holes 3.1.2 are vertically provided on the upper edge of the wing plates 3.1.1. That is, the wing plates 3.1.1 are conveniently fixed to the side of the tunnel by passing the anchor rods through the through holes 3.1.2, so as to assemble the retractable side frame 3. The vertical strips 3.2 are adjusted to be retractable relative to the vertical housing 3.1 according to the height of the tunnel, and the positioning bolts 3.3 are screwed and sleeved into the corresponding screw holes 3.2.1, so as to fix the vertical strips 3.2 and the vertical housing 3.1 relatively. The water supply connector 2 can be fixed on the inner wall of the retractable side frame 3 by passing the fixing bolt through the through hole 2.4.1 and then screwing it into the combination hole 3.4. The water supply connector 2 at the top plate of the tunnel and the water supply connector 2 on the inner wall of the retractable side frame 3 are connected in series using the spray pipe fitting 1. The pipe sleeve 2.2 at the bottom end of the water supply connector 2 located at the lowest position on the retractable side frame 3 is connected with a high-pressure hose, and the input end of the high-pressure hose is connected to the clean water pipe in the tunnel through a stop valve.

[0034] The swing box body 4 is a retractable trough structure, the outer end of the swing box body 4 is hinged to the inner side wall of the retractable side frame 3 near the bottom end, the bottom of the outer end of the front wall of the swing box body 4 is provided with a drain pipe head 4.5, the front wall of the swing box body 4 is located inside the drain pipe head 4.5 and is vertically connected to a second rotating shaft 4.4, the bottom surface of the inner cavity of the swing box body 4 is provided with a second combination hole 4.1.2 and a third combination hole 4.2.2 for installing a fixing frame; wherein, the swing box body 4 includes an outer trough body 4.1 which is slidably clamped in the inner cavity of the outer trough body 4.1, an inner trough body 4.2, a ear plate 4.3 fixed to the outer end of the outer trough body 4.1 and rotatably connected to the ear seat 3.5, and a telescopic cylinder 4.8 for pushing and pulling the inner trough body 4.2 to slide relative to the outer trough body 4.1. The combination hole 2 4.1.2 is arranged on the inner cavity bottom surface of the outer tank body 4.1, the combination hole 3 4.2.2 is arranged on the inner cavity bottom surface of the inner tank body 4.2, and the drainage pipe head 4.5 and the second rotating shaft 4.4 are respectively arranged on the front wall of the outer tank body 4.1 near the outer end. The piston rod telescopic amount of the telescopic cylinder 4.8 is adjusted according to the width of the lane, so that when the swing box bodies 4 on both sides are opened and supported on the bottom plate of the lane at the same time, the ends can be butted. The water supply connector 2 can be fixedly installed by bolts at the combination hole 2 4.1.2 and the combination hole 3 4.2.2. The multiple water supply connectors 2 in the swing box body 4 are connected in series using the spray pipe fitting 1, and the pipe sleeve 2.2 on the inner side of the water supply connector 2 at the inner end is blocked with a plug, and the pipe sleeve 2.2 on the outer side of the water supply connector 2 at the outer end is connected with a high-pressure hose, and the high-pressure hose here is connected in parallel with the high-pressure hose connected to the water supply connector 2 at the bottom of the telescopic side frame 3 by a tee and connected to the output end of the stop valve at the clean water pipe. That is, by opening the stop valve, the clean water in the clean water pipe can be input into the water passage formed by the water supply connector 2 and the spray pipe through the high-pressure hose, and finally sprayed out from the nozzle of the spray head 1.4. It should be noted that all the spray heads 1.4 are in the same plane, so as to form a water curtain covering the entire cross-section of the lane, and also to facilitate the collection and drainage of the spray water by the outer tank body 4.1 and the inner tank body 4.2. In order to improve the collection rate of the spray water by the outer tank body 4.1 and the inner tank body 4.2, the top of the front and rear walls of the outer tank body 4.1 and the inner tank body 4.2 are respectively provided with outward-turned slats, and the outward-turned slats form a water collection cover structure, so that more spray water is collected in the outer tank body 4.1 and the inner tank body 4.2, and the collected spray water is discharged by the drainage pipe head 4.5, wherein the drainage pipe head 4.5 can drain the collected spray water to the drainage ditch in the lane through an external hose.

[0035] The top end of the piston cylinder of the swing cylinder 5 is rotatably sleeved on the rotating shaft 1 3.6 and the bottom end of the piston rod is rotatably sleeved on the rotating shaft 2 4.4. That is, when carrying out maintenance, preparation and other work, the coal mining face or the excavation face does not carry out activities that generate dust, and there is no need to open the full-section spray facility. At this time, in order to meet the passage of personnel or mine cars, the swing box body 4 can be pulled to swing around the hinge axis at the ear plate 4.3 and the ear seat 3.5 by contracting the piston rod of the swing cylinder 5, and the trough body 1 4.1 and the trough body 2 4.2 are just engaged at the retractable side frame 3 to complete the storage of the swing box body 4. When the coal mining face or the excavation face is carrying out dust-generating work, the swing cylinder 5 extends the piston rod, opens the swing box body 4 and supports it on the bottom plate of the roadway, and the full-section spray facility can be set.

[0036] In order to protect the telescopic cylinder 4.8 from being sprayed or immersed in water, an end plate 1 4.1.1 is fixed to the outer end of the inner cavity of the outer trough body 4.1, an end plate 2 4.2.1 is fixed to the inner end of the inner cavity of the inner trough body 4.2, an inner protective tube 4.6 extending along the axial direction of the outer trough body 4.1 is vertically fixed to the middle of the side wall of the end plate 1 4.1.1, an outer protective tube 4.7 extending along the axial direction of the inner trough body 4.2 and slidably mounted on the outside of the inner protective tube 4.6 is vertically fixed to the middle of the side wall of the end plate 2 4.2.1, the piston cylinder of the telescopic cylinder 4.8 is fixedly mounted in the inner protective tube 4.6, and the end of the piston rod of the telescopic cylinder 4.8 is fixedly connected to the end plate 2 4.2.1.

[0037] The swing cylinder 5 and the telescopic cylinder 4.8 are both connected to the compressed air pipeline in the lane by high-pressure hoses.

[0038] In order to facilitate the disassembly and assembly of the spray head 1.4 and to enable flexible replacement when the spray head 1.4 is damaged, the bottom of the outer sleeve 1.1 is fixedly sleeved with connecting sleeves 1.3 near both ends, and the top of the spray head 1.4 is detachably sleeved in the connecting sleeves 1.3.

[0039] The combination hole 1 3.4, the combination hole 2 4.1.2 and the combination hole 3 4.2.2 are respectively in correspondence with the four through holes 1 2.4.1 on a support plate 2.4, so that the water supply connector 2 can be fixed to the corresponding combination holes by screws.

[0040] Support frames 4.9 are fixed to the bottom surface of the outer tank 4.1 near both ends. The height of the support frame 4.9 is not lower than the height of the track surface of the track set in the lane. When the swing box 4 swings open, it can maintain a horizontal state through the support of the support frame 4.9, so as to facilitate the drainage of the collected spray water.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A full-section spray dust removal device for underground tunnels, characterized in that: include: A spray pipe (1), the spray pipe (1) comprising an outer sleeve (1.1), an inner sleeve (1.2) slidably sleeved on both ends of the inner cavity of the outer sleeve (1.1), a spray head (1.4) installed at the bottom of the outer sleeve (1.1), and a pipe joint (1.5) fixedly sleeved on the rear wall of the outer end of the inner sleeve (1.2), the spray head (1.4) having a strip-shaped slit structure; A water supply connector (2), the water supply connector (2) comprising a connecting shell (2.1), a pipe sleeve (2.2) fixedly sleeved on both ends of the front wall of the connecting shell (2.1) and rotatably sleeved to match the pipe joint (1.5), and a fixing frame fixed to the top surface of the connecting shell (2.1); A retractable side frame (3), wherein the inner side wall of the retractable side frame (3) is vertically provided with a plurality of combination holes (3.4) for installing a fixed frame, and a rotating shaft (3.6) is vertically sleeved on the lower middle side of the front wall of the retractable side frame (3); A swing box body (4), the swing box body (4) is a retractable trough structure, the outer end of the swing box body (4) is hinged to the inner side wall of the retractable side frame (3) near the bottom end, the bottom of the outer end of the front wall of the swing box body (4) is sleeved with a drainage pipe head (4.5), the front wall of the swing box body (4) is vertically connected to a second rotating shaft (4.4) at a position located inside the drainage pipe head (4.5), and the bottom surface of the inner cavity of the swing box body (4) is provided with a second combination hole (4.1.2) and a third combination hole (4.2.2) for installing a fixing frame; A swiveling cylinder (5), wherein the top end of the piston cylinder of the swiveling cylinder (5) is rotatably sleeved on the first rotating shaft (3.6) and the bottom end of the piston rod is rotatably sleeved on the second rotating shaft (4.4).

2. The full-section spray dust removal device for underground tunnels according to claim 1 is characterized in that: An ear seat (3.5) is fixed to the inner side wall of the telescopic side frame (3) near the bottom end, and the swing box body (4) comprises an inner trough body (4.2) slidably mounted in the inner cavity of the outer trough body (4.1), an ear plate (4.3) fixed to the outer end of the outer trough body (4.1) and rotatably connected to the ear seat (3.5), and a telescopic cylinder (4.8) used for pushing and pulling the inner trough body (4.2) to slide relative to the outer trough body (4.1).

3. The full-section spray dust removal device for underground tunnels according to claim 2 is characterized in that: An end plate 1 (4.1.1) is fixed to the outer end of the inner cavity of the outer trough body (4.1), and an end plate 2 (4.2.1) is fixed to the inner end of the inner cavity of the inner trough body (4.2). An inner protective tube (4.6) extending along the axial direction of the outer trough body (4.1) is vertically fixed to the middle of the side wall of the end plate 1 (4.1.1), and an outer protective tube (4.7) extending along the axial direction of the inner trough body (4.2) and slidably mounted on the outside of the inner protective tube (4.6) is vertically fixed to the middle of the side wall of the end plate 2 (4.2.1). The piston cylinder of the retractable cylinder (4.8) is fixedly sleeved in the inner protective tube (4.6), the end of the piston rod of the telescopic cylinder (4.8) is fixedly connected to the second end plate (4.2.1), the second combination hole (4.1.2) is arranged on the bottom surface of the inner cavity of the outer tank body (4.1), the third combination hole (4.2.2) is arranged on the bottom surface of the inner cavity of the inner tank body (4.2), and the drainage pipe head (4.5) and the second rotating shaft (4.4) are respectively arranged on the front wall of the outer tank body (4.1) near the outer end.

4. The full-section spray dust removal device for underground tunnels according to claim 1 is characterized in that: The bottom of the outer sleeve (1.1) is respectively fixedly sleeved with a connecting sleeve (1.3) near both ends, and the top end of the spray head (1.4) is detachably sleeved in the connecting sleeve (1.3).

5. The underground tunnel full-section spray dust removal device according to claim 1 is characterized by: A vertical plate (2.3) is vertically fixed in the middle of the top surface of the connection shell (2.1), a support plate (2.4) is vertically fixed to the top of the vertical plate (2.3), and a through hole (2.4.1) is respectively provided near the four corners of the support plate (2.4), and the four through holes (2.4.1) are respectively in a corresponding relationship with the combination hole (3.4), the combination hole (4.1.2) and the combination hole (4.2.2).

6. The underground tunnel full-section spray dust removal device according to claim 3 is characterized by: Support frames (4.9) are respectively fixed near the two ends of the bottom surface of the outer tank body (4.1).

7. The full-section spray dust removal device for underground tunnels according to claim 2 is characterized in that: The telescopic side frame (3) comprises a vertical shell (3.1) and a vertical strip (3.2) slidably mounted in the inner cavity of the vertical shell (3.1); a plurality of screw holes (3.2.1) are respectively arranged vertically near the front and rear sides of the inner wall of the vertical strip (3.2); a positioning bolt (3.3) threadedly mounted and matched with the screw hole (3.2.1) is sleeved on the inner wall of the vertical shell (3.1); the combination hole 1 (3.4) is vertically arranged at the center of the inner wall of the vertical shell (3.1) and the vertical strip (3.2); the rotating shaft 1 (3.6) is sleeved in the middle of the front wall of the vertical shell (3.1); and the ear seat (3.5) is fixed to the inner wall of the vertical shell (3.1) near the bottom end.

8. The underground tunnel full-section spray dust removal device according to claim 7, characterized in that: The outer sides of the front and rear walls of the vertical shell (3.1) are respectively provided with wing plates (3.1.1), and a plurality of through holes (3.1.2) are vertically provided on the wing plates (3.1.1).

9. The underground tunnel full-section spray dust removal device according to claim 2, characterized in that: The top ends of the front and rear walls of the outer tank body (4.1) and the inner tank body (4.2) are respectively provided with outward-turned strips.

10. The underground tunnel full-section spray dust removal device according to claim 9, characterized in that: A water sealing structure is provided between the pipe joint (1.5) and the pipe sleeve (2.2).

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