Automatic laying device for underground multi-layer fireproof isolation belt of coal mine

Abstract

The invention belongs to the technical field of coal mine tunnel fire prevention, and particularly provides a coal mine underground multi-layer fireproof isolation belt automatic laying device which comprises a track, a walking device, a transportation mechanism, a patrol robot and a fire fighting system. A fire extinguishing agent in a fire-fighting pipeline is injected into the fireproof bag, and the fireproof bag is filled and expanded to block the position of a coal mine which is about to be isolated and fireproof, so that the purpose of isolating a mine tunnel is achieved, and the problems that when an existing underground coal mine fireproof isolation belt is laid, the danger is large, the number of construction steps is large, and the construction time is long are effectively solved. And in addition, the track robot in the existing mature technology can accurately navigate and automatically distribute a fireproof isolation belt to adapt to a complex environment, and meanwhile, an automatic supply system and a remote monitoring function are arranged, so that the safety and efficiency of underground fireproof work are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fire prevention in coal mine tunnels, and in particular provides an automatic arrangement device for multi-layer fireproof isolation belts in underground coal mines. Background Art

[0002] Fire is a common and serious safety hazard during underground operations in coal mines. Due to the closed space and poor ventilation conditions in coal mines, once a fire occurs, flames and smoke will spread rapidly, easily leading to large-scale casualties and equipment damage. Therefore, in order to ensure safety, fire isolation belts are usually laid underground to limit the spread of fire. However, the traditional method of laying fire isolation belts mainly relies on manual operation or semi-automatic machinery, which has problems such as low laying accuracy, low efficiency, and difficulty in adapting to complex environments. Especially in harsh environments such as high temperature and thick smoke where fires occur, manually laying fire isolation belts faces great dangers and cannot achieve real-time monitoring and flexible response.

[0003] Existing coal mine underground fire isolation belt technology mainly relies on fixed isolation devices or emergency spraying systems. However, the deployment of these devices is relatively fixed and difficult to flexibly adjust to changes in different fire areas. For deep wells and long underground passages, the laying and maintenance of traditional isolation belts are time-consuming and labor-intensive, and once the equipment is deployed, it is difficult to readjust its position in a short time, and it is unable to meet the actual needs of sudden fires. At the same time, although fire sprinkler systems have been introduced into some coal mine underground fire protection systems, under windless or low wind speed conditions, the sprayed fire extinguishing agent is often difficult to cover the entire fire source area, resulting in unsatisfactory fire extinguishing effects.

[0004] When laying out the existing fire isolation belt in underground coal mines, it is necessary to use a fixed-size flexible fire wall unit shell to set the position, and then grouting is performed inside the shell to finally form a fire wall. This process requires the sprinkler system close to the fire to continuously act to reduce the speed of fire spread. Subsequently, emergency construction is performed manually at a relatively safe position at a longer distance and where the loss can be minimized to complete the laying of the fire isolation belt. The whole process is very dangerous, with many construction steps and a long construction time, and it is impossible to balance the loss-stopping effect and safety. In view of the above problems, an automatic laying device for multi-level fire isolation belts in underground coal mines is proposed. Summary of the invention

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows: An automatic layout device for a multi-level fire isolation belt in a coal mine underground, including a track fixed in a mine roadway and a hoisting mechanism cooperating with the track. The hoisting mechanism fixes the track to the inner wall of the mine through connectors at both ends. A number of sets of traveling devices are meshed and assembled outside the track. A transportation mechanism is assembled at the bottom of any at least two sets of the traveling devices, and a patrol robot is assembled at the bottom of any one set of the traveling devices. A fire protection system is assembled outside the track;

[0006] The traveling device includes a traveling frame. A load-bearing guide wheel is rotationally assembled at the top of the traveling frame, and an auxiliary guide wheel is assembled inside the traveling frame;

[0007] The transportation mechanism includes a fixing frame. A coupling is assembled at the top of the fixing frame. A hoisting belt is bundled and fixed outside the fixing frame. A folding package is tied and fixed inside the hoisting belt. A releaser is assembled at the top position where the hoisting belt is connected to the fixing frame;

[0008] The fire protection system includes a main pipeline parallel to the track direction. A docking valve is assembled on the outer side in the horizontal direction of the main pipeline. A docking device is assembled outside the traveling device. A rotatable docking head is assembled outside the docking device, and the docking head can be inserted and communicated with the docking valve.

[0009] Further, the track includes a T-shaped rail. A horizontal bearing platform is welded at the bottom of the T-shaped rail, and a vertical guiding platform is welded on the outer wall of the bearing platform.

[0010] Further, a rail-changing structure is rotationally assembled at the end of the T-shaped rail.

[0011] Further, a power supply wire is fixed on the lower surface of the top end of the T-shaped rail.

[0012] Further, the hoisting mechanism includes a top hoisting member and a bottom hoisting member. A connector is sleeved outside the top hoisting member and the bottom hoisting member. An X-shaped groove is opened on the outside of the connector, and a horizontal groove is opened transversely in the middle of the top hoisting member and the bottom hoisting member.

[0013] Further, a connecting plate is fixed at the bottom end of the traveling frame, and a universal connecting groove is opened on the upper surface of the connecting plate.

[0014] Further, the coupling includes a housing with an outer ring shape. An I-shaped shaft is rotationally assembled inside the housing. The housing and the connecting plate are assembled and fixed through bolts and nuts, and the bottom end of the I-shaped shaft and the fixing frame are assembled and fixed through bolts and nuts.

[0015] Further, the folding bag is of a hollow fiber bag structure, approximately cube-shaped in a fully expanded state, and folds and shrinks into a folding bag during transportation. The upper surface of the folding bag is connected to the fixing frame by a cable. An injection tube is sewn at the top of the middle of the folding bag, and the injection tube communicates with the docking head.

[0016] Further, the inside of the docking device has a motor and a rotating joint. The fixed end of the rotating joint is connected to the injection tube. A rotating tube is fixed to the rotating end of the rotating joint. A connecting tube is fixedly installed outside the rotating tube. The docking head is fixedly connected to the end of the connecting tube. The motor can drive the rotating tube to reciprocally flip between 0° - 90° through a transmission mechanism.

[0017] Further, a power device is assembled at the axis of any group of load-bearing guide wheels of the traveling device. The power device includes a motor and a transmission mechanism driven by gears. The motor can drive the corresponding load-bearing guide wheel to move through the transmission mechanism of the gear drive mechanism. The power device is powered by contacting the power supply wire through a sliding power connection method.

[0018] The beneficial effects of using the present invention are as follows:

[0019] The present invention provides a robot for automatically laying a fire isolation belt. After the system identifies the fire location, the robot is released to transport and carry a fireproof bag to a predetermined position. Then, the fire extinguishing agent in the fire pipeline is injected into the inside of the fireproof bag, and the fireproof bag is filled and expanded to block the position of the coal mine shaft where fire isolation is desired, achieving the purpose of isolating the mine roadway. This effectively solves the problems of high danger, many construction steps, and long construction time when laying the fire isolation belt in the existing coal mine underground. In addition, the existing mature technology track robot can accurately navigate and automatically lay the fire isolation belt, adapt to complex environments, and is equipped with an automatic supply system and remote monitoring function, greatly improving the safety and efficiency of underground fire prevention work, and taking into account both the loss prevention effect and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is Figure 1 an enlarged schematic diagram of the structure at a in

[0022] Figure 3 is Figure 1 an enlarged schematic diagram of the structure at b in

[0023] Figure 4 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 5 is an exploded view of the present invention;

[0025] Figure 6 For Figure 5 Enlarged schematic view of the structure at position c in

[0026] Figure 7 For Figure 5 Enlarged schematic view of the structure at position d in

[0027] Figure 8 Schematic view of the walking device structure of the present invention;

[0028] Figure 9 Right view of the fire protection system of the present invention;

[0029] Figure 10 For Figure 7 Schematic sectional view at A - A in

[0030] Figure 11 For Figure 8 Enlarged schematic view of the structure at position e in

[0031] Figure 12 Schematic view of the coupling structure of the present invention;

[0032] Figure 13 Exploded view of the coupling of the present invention;

[0033] Figure 14 Top view of the coupling of the present invention;

[0034] Figure 15 For Figure 12 Schematic sectional view at B - B in

[0035] Figure 16 Top view of the plugging state of the present invention;

[0036] Figure 17 Schematic view of the fully plugged state of the present invention.

[0037] Reference numerals include:

[0038] 1. Rail; 11. T - shaped rail; 12. Loading platform; 13. Guide platform; 14. Rail - changing structure; 15. Power supply wire;

[0039] 2. Lifting mechanism; 21. Top lifting member; 22. Bottom lifting member; 23. Connecting member; 24. Horizontal groove; 25. X - groove; 26. Pipeline fixing bracket;

[0040] 3. Walking device; 31. Walking frame; 32. Load - bearing guide wheel; 33. Auxiliary guide wheel; 34. Connecting plate;

[0041] 4. Transportation mechanism; 41. Coupling; 411. Housing; 412. I-beam shaft; 413. Rolling plate; 414. Ball structure; 42. Fixed frame; 43. Lifting belt; 44. Folding package; 45. Injection pipe;

[0042] 5. Fire protection system; 51. Main pipeline; 52. Docking valve; 53. Docking device; 54. Rotating pipe; 55. Connecting pipe; 56. Docking head; 6. Patrol robot; 7. Schematic mine tunnel; 8. Release device. Detailed implementation manners

[0043] The present invention will be described in detail below with reference to the accompanying drawings.

[0044] Referring to Figures 1 - 17 , an automatic layout device for multi-level fire isolation belts in underground coal mines includes a track 1 fixed in a mine tunnel and a hoisting mechanism 2 cooperating with the track 1. The hoisting mechanism 2 fixes the track 1 to the inner wall of the mine cave through connectors at both ends. A plurality of sets of traveling devices 3 are meshed and assembled outside the track 1. A transportation mechanism 4 is assembled at the bottom of any at least two sets of traveling devices 3. A patrol robot 6 is assembled at the bottom of any one set of traveling devices 3. A fire protection system 5 is assembled outside the track 1;

[0045] The traveling device 3 includes a traveling frame 31. A load-bearing guide wheel 32 is rotatably assembled at the top of the traveling frame 31. An auxiliary guide wheel 33 is assembled inside the traveling frame 31;

[0046] The transportation mechanism 4 includes a fixed frame 42. A coupling 41 is assembled at the top of the fixed frame 42. A hoisting belt 43 is bundled and fixed outside the fixed frame 42. A folding package 44 is bundled and fixed inside the hoisting belt 43. A release device 8 is assembled at the top position where the hoisting belt 43 is connected to the fixed frame 42;

[0047] The fire protection system 5 includes a main pipeline 51 parallel to the direction of the track 1. A docking valve 52 is assembled on the outer side in the horizontal direction of the main pipeline. A docking device 53 is assembled outside the traveling device 3. A rotatable docking head 56 is assembled outside the docking device 53. The docking head 56 can be inserted and communicated with the docking valve 52.

[0048] Specifically, referring to Figure 1 , Figure 4 , Figure 5 and Figure 7 , the track 1 includes a T-shaped rail 11. A horizontal bearing platform 12 is welded to the bottom of the T-shaped rail 11. A vertical guiding platform 13 is welded to the outer wall of the bearing platform 12.

[0049] Specifically, a track-changing structure 14 is rotatably assembled at the end of the T-shaped rail 11.

[0050] Specifically, a power supply wire 15 is fixed to the lower surface of the top end of the T-shaped rail 11.

[0051] Referring to Figure 5 and Figure 6 , the track 1 and the bottom suspension member 22 can be assembled and fixed by means of bolts, welding or clamping. The bottom of the bottom suspension member 22 is in a U-shape, and the top of the T-shaped rail 11 corresponds to the groove of the U-shape. Fixing holes are evenly formed in the top connecting plate of the top suspension member 21, and the top suspension member 21 is fixedly assembled with the inner wall of the mine tunnel through connecting members such as expansion bolts.

[0052] Referring to Figure 1 , Figure 4 and Figure 5 , the axis of the rail-changing structure 14 is installed by means of hinge installation with the position to be rail-changed, and a hydraulic cylinder or other telescopic mechanism is assembled on the top of the T-shaped rail 11 to drive the left and right deflection of the rail-changing structure 14 by telescoping, and then cooperate with different-shaped rail structures such as parallel rails and turning rails to realize the function of rail change. The specific usage pattern of the rails needs to be determined according to the actual trend of the mine tunnel, and no redundant introduction is made in this application. The illustrated example in this application shows a turning-type rail structure. Taking this rail as an example, the working process of the specific automatic fire isolation belt laying device in this application is as follows:

[0053] 1. In the daily state, at least one set of traveling devices 3 or multiple sets of traveling devices 3 are assembled on the single rail to patrol the whole process or in sections to analyze and patrol the situation in the mine tunnel, so as to assist in discovering dangers or potential hazards;

[0054] 2. In the emergency state, when a fire occurs, after the patrol robot 6 discovers the situation or the fire is discovered through other early warning systems, the background system will identify the location of the early warning fire and the real-time development situation, and block the important mine tunnels according to the preset plan;

[0055] 3. The background system activates the corresponding number of transportation mechanisms 4 according to the pre-plan, starts the traveling devices 3 connected to the transportation mechanisms 4, and moves them to the preset positions. In addition, more than one set of transportation mechanisms will be added behind the front-row transportation mechanisms 4;

[0056] 4. When the transportation mechanism 4 is about to reach the predetermined position, the motor inside the docking device 53 starts, and the rotating tube 54 is driven by gears to turn up and stand upright. When the transportation mechanism 4 reaches the final destination, the docking head 56 is inserted into the inside of the docking valve 52, so as to enter the laying position;

[0057] 5. Use the releaser 8 to release the sling 43. The folded package 44 in the bundled state is lifted from the top of the mine tunnel due to the fixing effect between the top cable and the fixing frame 42, and the bottom loosens and falls. After the docking head 56 is connected to the docking valve 52, the fire extinguishing auxiliary agent inside the main pipe 51 passes through the docking head 56, the connecting pipe 55, then through the rotating pipe 54 and the rotary joint, and is connected to the injection pipe 45 to inject into the inside of the folded package 44;

[0058] 6. Finally, the folded package 44 filled with the injected fire extinguishing auxiliary agent is fully opened to block the mine tunnel to be isolated, avoiding the spread of the fire in the mine tunnel.

[0059] Specifically, referring to Figure 6 , the hoisting mechanism 2 includes a top hoisting member 21 and a bottom hoisting member 22. The outside of the top hoisting member 21 and the bottom hoisting member 22 is sleeved with a connecting member 23. An X groove 25 is opened on the outside of the connecting member 23, and a horizontal groove 24 is opened horizontally in the middle of the top hoisting member 21 and the bottom hoisting member 22;

[0060] Since long strip-shaped horizontal grooves 24 are opened on the inner sides of the top hoisting member 21 and the bottom hoisting member 22, during installation, after being sleeved with the connecting member 23 with the X groove opened, there will be multiple overlapping positions between the horizontal groove 24 and the X groove, and bolts can be inserted to assist in clamping and fixing, or welding can be used to assist in fixing and strengthening the entire hoisting mechanism. Since the connecting member 23 is hollow and can be sleeved on both ends of the inner sides of the top hoisting member 21 and the bottom hoisting member 22, when installing the track 1, the length can be adjusted according to the uneven top wall of the mine tunnel. Thus, after the length is adjusted adaptively, the track 1 can meet the installation effect, that is, a smooth and stable effect.

[0061] Specifically, referring to Figure 4 、 Figure 7 and Figure 8 , a connecting plate 34 is fixed at the bottom end of the walking frame 31. A universal connecting groove is opened on the upper surface of the connecting plate 34. The shape of the connecting groove is an annular long hole shape, which is convenient for the installation and fixation of the bottom equipment. When in use, the load-bearing guide wheel 32 directly rolls on the upper surface of the bearing platform 12 to achieve the walking action. The auxiliary guide wheel 33 is closely attached to the guiding platform 13 to balance the forces on both sides and ensure the stability of the entire walking device 3 during the walking process. When in use, the load-bearing guide wheel 32 not connected to the power equipment is installed and docked with the shaft rod using a bearing and rotates passively. The load-bearing guide wheel 32 connected to the power is a fixed structure with the shaft rod to ensure stable power output, and shear wheels for climbing and braking are also equipped. Since this structure is very common in the technology of the suspended rail robot, the specific implementation methods of the braking, climbing, etc. actions of the walking device 3 are not elaborated in this application too much.

[0062] Specifically, referring to Figure 1 、Figure 4 , Figure 5 , Figures 12 - 15 , the coupling 41 includes an outer ring-shaped housing 411. An I-shaped shaft 412 is rotatably assembled inside the housing. The housing 411 and the connecting plate 34 are assembled and fixed by bolts and nuts. The bottom end of the I-shaped shaft 412 and the fixing frame 42 are assembled and fixed by bolts and nuts. A ball structure 414 is provided between the inner bottom surface of the housing 411 of the coupling 41 and the top lower surface of the I-shaped shaft 412, which is convenient for use in the case of a single rail. When the single set of traveling device 3 turns, it will not be affected by the bottom hoisting equipment, improving the smoothness of walking.

[0063] The I-shaped shaft 412 is composed of a T-shaped shaft at the bottom end and a rolling plate 413 at the top end. Annular grooves are provided on the lower surface of the rolling plate 413 and the upper surface of the inner wall of the housing, which are used to limit the rolling route of the balls and improve the smoothness.

[0064] Specifically, referring to Figures 12 - 17 , the folding bag 44 is a hollow fiber bag structure, which is approximately a cube in the fully expanded state. When transported, it is folded and reduced to become the folding bag 44. The upper surface of the folding bag 44 is connected to the fixing frame 42 by a cable. An injection pipe 45 is sewn at the top end of the middle part of the folding bag 44. The injection pipe 45 is communicated with the docking head 56. The folding bag 44 is preferably sewn into a strip-shaped structure of an approximate cube with a side length greater than 0.5 m of the required mine roadway. After being completely filled with the fire-fighting agent, its overall side lengths are similar, and there will be no problems of rolling and exposing seams.

[0065] Specifically, referring to Figure 6 , Figure 9 , Figure 10 and Figure 11 , the inside of the docking device 53 has a motor and a rotary joint. The fixed end of the rotary joint is connected to the injection pipe 45. A rotating pipe 54 is fixed to the rotating end of the rotary joint. A connecting pipe 55 is fixedly installed outside the rotating pipe 54. The docking head 56 is connected and fixed to the end of the connecting pipe 55. The motor can drive the rotating pipe 54 to reciprocally flip between 0° and 90° through a transmission mechanism.

[0066] The docking valve 52 and the docking head 56 are a commonly used one-way valve docking structure in the prior art. During the process of the docking head 56 being driven forward by the traveling device 3, when the docking head 56 is in a horizontal state downward, the movement of the whole device will not be blocked. When approaching the preset position, the docking device 53 is activated to insert the docking head 56 into the interior of the docking valve 52 to connect the pipeline. By ensuring a certain moving speed of the traveling device 3, the docking head 56 with the same speed is directly inserted into the interior of the flared docking valve 52 in a way of impact. And at the connection position between the docking head 56 and the docking valve 52, a radial round hole is provided on the inner wall of the docking valve 52 or the outer wall of the docking head 56. Inside the round hole, there is a spring and a ball (as Figure 10 and Figure 11 shown). When the speed is ensured and the driving force of the ball and the spring is satisfied, the docking head 56 can smoothly enter the interior of the docking valve 52;

[0067] The interior of the docking valve 52 is a valve core structure pressed by a spring. After the docking head 56 enters the interior of the docking valve 52, it will push open the valve core structure, thereby connecting the main pipeline 51 with the content cavity of the folding bag 44.

[0068] And between the docking valve 52 and the main pipeline 51, an electromagnetic valve can also be set. After the effective connection is realized between the docking head 56 and the docking valve 52 which are docked and clamped, the electromagnetic valve is opened to release the fire extinguishing agent. At intervals, the main pipeline 51 will reserve a free end connected by a long hose. During plugging, in order to ensure the tightness effect, when the vicinity of the plugging position is lifted upward, the main pipeline 51 and the track 1 near the plugging position will be squeezed and deformed to fit against the top of the mine roadway to achieve complete sealing. During this process, the reserved hose will be stretched passively, providing a redundant structure to avoid the connection of the pipeline after deformation, and meeting the use condition that the track 1 is completely blocked and cannot be used but the pipeline of the front fire protection system 5 will not be disconnected.

[0069] Specifically, a power device is assembled at the axis of any set of load-bearing guide wheels 32 of the traveling device 3. The power device includes a motor and a transmission mechanism driven by gears. The motor can drive the corresponding load-bearing guide wheel 32 to travel through the transmission mechanism of the gear drive mechanism. The power device is powered by contacting the power supply wire 15 in a sliding power connection manner.

[0070] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, many changes can be made in the specific implementation manner and application scope. As long as these changes do not depart from the concept of the present invention, they all belong to the protection scope of the present invention.

Claims

1. An automatic layout device for a multi-level fire prevention isolation belt in a coal mine underground, comprising a track fixed in a mine roadway and a hoisting mechanism cooperating with the track, characterized in that: The hoisting mechanism fixes the track to the inner wall of the mine tunnel through connectors at both ends. A number of sets of traveling devices are meshed and assembled on the outside of the track. A transportation mechanism is assembled at the bottom of any at least two sets of the traveling devices, and a patrol robot is assembled at the bottom of any one set of the traveling devices. A fire protection system is assembled on the outside of the track; The traveling device includes a traveling frame. A load-bearing guide wheel is rotatably assembled at the top of the traveling frame, and an auxiliary guide wheel is assembled inside the traveling frame; The transportation mechanism includes a fixing frame. A coupling is assembled at the top of the fixing frame. A hoisting belt is bundled and fixed outside the fixing frame. A folding bag is bundled and fixed inside the hoisting belt. A releaser is assembled at the top position where the hoisting belt is connected to the fixing frame; The fire protection system includes a main pipeline parallel to the track direction. A docking valve is assembled on the outer side in the horizontal direction of the main pipeline. A docking device is assembled on the outside of the traveling device. A rotatable docking head is assembled on the outside of the docking device, and the docking head can be inserted and communicated with the docking valve.

2. The automatic layout device for multi-level fire prevention isolation belts in underground coal mines according to claim 1, characterized in that: The track includes a T-shaped rail. A horizontal bearing platform is welded at the bottom of the T-shaped rail, and a vertical guiding platform is welded on the outer wall of the bearing platform.

3. An automatic layout device for a multi-level fire prevention isolation belt in a coal mine according to claim 2, characterized in that: A track-changing structure is rotatably assembled at the end of the T-shaped rail.

4. An automatic layout device for multi-level fire isolation belts in underground coal mines according to claim 1, characterized in that: A power supply wire is fixed on the lower surface of the top end of the T-shaped rail.

5. The automatic layout device for multi-level fire isolation belts in underground coal mines according to claim 1, characterized in that: The hoisting mechanism includes a top hoisting part and a bottom hoisting part. A connector is sleeved outside the top hoisting part and the bottom hoisting part. An X-shaped groove is opened on the outside of the connector, and a horizontal groove is opened transversely in the middle of the top hoisting part and the bottom hoisting part.

6. The automatic layout device for multi-level fire isolation belts in coal mines according to claim 1, wherein: A connecting plate is fixed at the bottom end of the traveling frame, and a universal connecting groove is opened on the upper surface of the connecting plate.

7. An automatic layout device for a multi-level fire prevention isolation belt in a coal mine according to claim 4, characterized in that: The coupling includes an outer-ring-shaped housing. An I-shaped shaft is rotatably assembled inside the housing. The housing and the connecting plate are assembled and fixed by bolts and nuts, and the bottom end of the I-shaped shaft and the fixing frame are assembled and fixed by bolts and nuts.

8. An automatic layout device for a multi-level fire prevention isolation belt in a coal mine according to claim 7, characterized in that: The folding bag is a hollow fiber bag structure, approximately cubic in the fully unfolded state, and folds and shrinks into a folding bag during transportation. The upper surface of the folding bag is connected to the fixing frame by a cable. An injection pipe is sewn at the top middle of the folding bag, and the injection pipe is communicated with the docking head.

9. The automatic layout device for multi-level fire prevention isolation belts in underground coal mines according to claim 1, characterized in that: The inside of the docking device has a motor and a rotating joint. The fixed end of the rotating joint is connected to the injection pipe. The rotating end of the rotating joint is fixed with a rotating pipe. A connecting pipe is fixedly installed on the outside of the rotating pipe. The docking head is connected and fixed to the end of the connecting pipe. The motor can drive the rotating pipe to reciprocate and flip between 0° and 90° through a transmission mechanism.

10. The automatic layout device for multi-level fire isolation belts in coal mines according to claim 1, characterized in that: A power device is assembled at the axis of any group of load-bearing guide wheels of the traveling device. The power device includes a motor and a transmission mechanism driven by gears. The motor can drive the corresponding load-bearing guide wheel to travel through the transmission mechanism of the gear drive mechanism. The power device is powered by contacting the power supply wire in a sliding power connection manner.

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