Tunnel fire fighting device

Abstract

This utility model discloses a tunnel fire-fighting device, relating to the field of tunnel fire-fighting technology. The device includes a fire pump, a foam liquid pump, a corresponding industrial water supply pipeline control valve group, a fire alarm control system, a tunnel body, and foam nozzles. Two sets of symmetrically distributed slide rails are fixedly installed on the upper inner wall of the tunnel body. A movable frame is provided on one side of each slide rail. Four evenly distributed drive wheels are rotatably installed on the inner side of each movable frame. A rotating shaft is fixedly installed in the middle of each of the two sets of drive wheels, and a drive assembly is provided at the top of each rotating shaft. This application uses a servo motor to drive the movable frame to move along the slide rails, which can quickly transport the foam nozzles to the fire area. Simultaneously, the movable frame can drive the delivery pipeline to move synchronously, ensuring a continuous and stable supply of foam liquid. This effectively solves the problem of blind spots in fire extinguishing by fixed nozzles and reduces the number of fixed nozzles required, significantly reducing the amount of engineering work and equipment installation costs.

Description

Technical Field

[0001] This utility model relates to the field of tunnel fire protection technology, specifically a tunnel fire protection device. Background Technology

[0002] With the continuous advancement of transportation infrastructure construction, tunnels have become a key project for connecting two places in complex terrain conditions such as mountains and rivers. However, due to the constraints of topography, the length of tunnels varies significantly, and their internal space is relatively closed, with poor ventilation and difficulty in evacuating people. Once a fire occurs, high temperature and thick smoke spread rapidly, making it difficult for rescuers to reach the scene in time to put out the fire. Therefore, it is necessary to establish complete fire-fighting facilities to ensure the safety of tunnels.

[0003] Traditional tunnel fire fighting systems mostly employ fixed foam nozzles and piping systems. Fire extinguishing is achieved by suspending fire pipes on the tunnel walls and installing foam nozzles at intervals. When the fire alarm system is triggered, the foam nozzles spray foam liquid from the pipes to extinguish the fire. However, this fire extinguishing solution requires laying pipes and installing nozzles according to the terrain characteristics when dealing with tunnels of different lengths and structures. This results in a large workload for installation and commissioning, a long construction period, and a large number of assembled equipment, leading to high manpower and material costs and many blind spots. On the other hand, the complexity and number of equipment make troubleshooting and component replacement difficult and costly.

[0004] To address the aforementioned problems, the inventors have proposed a tunnel fire-fighting device. Utility Model Content

[0005] To address the problems of high workload, long construction period, and high maintenance cost associated with existing fire extinguishing methods that involve laying pipelines and installing fixed foam nozzles, the purpose of this utility model is to provide a tunnel fire-fighting device.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a tunnel fire-fighting device, including a fire pump, a foam liquid pump, a corresponding water supply industrial pipeline control valve group, a fire alarm control system, a tunnel body, and foam nozzles. Two sets of symmetrically distributed slide rails are fixedly installed on the upper inner wall of the tunnel body. A movable frame is provided on one side of each of the two sets of slide rails. Four evenly distributed drive wheels are rotatably installed on the inner side of each of the two movable frames. A rotating shaft is fixedly installed in the middle of the two sets of drive wheels, and a drive assembly is provided at the top of each of the two rotating shafts. Four evenly distributed limit wheels are rotatably installed on one side of each of the two movable frames. A winding roller is rotatably installed in the middle of one side of each of the two movable frames. A conveying pipe is wound around the outer surface of each of the two winding rollers. Output pipes are fixedly installed on both sides of the tunnel body. The output pipes are interconnected with external foam conveying pipes. Threaded connectors are fixedly installed on one side of each of the two output pipes. Both conveying pipes are threadedly connected to the threaded connectors, and sealing gaskets are provided at the connection points of the threaded connectors.

[0007] Preferably, a reciprocating screw is rotatably mounted on the middle of one side of each of the two moving frames. A sliding block is mounted on the upper part of each of the two reciprocating screws to cooperate with it. Two symmetrically distributed fixed rods are fixedly mounted on the top of each of the two sliding blocks. The conveying pipe is slidably locked in the middle of the two fixed rods. A pressure sensor is mounted on the sliding block to detect the force on the conveying pipe. When the pressure exceeds a preset threshold, it is fed back to the control system to adjust the moving speed of the moving frame, thereby adjusting the running state of the winding roller and the reciprocating screw.

[0008] Preferably, the drive assembly includes a servo motor, which is fixedly installed on one side of the top of the moving frame. The top of the rotating shaft is fixedly installed on the drive end of the servo motor. One of the limiting wheels is connected to one side of the winding roller via a transmission belt. The winding roller is connected to the reciprocating lead screw via a transmission belt. Limiting rods are fixedly installed on one side of the lower part of both moving frames. The lower parts of the two sliding blocks are slidably engaged on the outer surface of the limiting rods. Track grooves are opened in the middle of one side of both sets of slide rails. Multiple limiting wheels are slidably engaged inside the track grooves.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This application uses a servo motor to drive a moving frame along a slide rail, which can quickly transport foam nozzles to the fire area. At the same time, the moving frame can drive the delivery pipeline to move synchronously, ensuring a continuous and stable supply of foam liquid. This effectively solves the problem of blind spots in fire extinguishing by fixed nozzles and can reduce the number of fixed nozzles required, significantly reducing the amount of engineering construction and equipment installation costs.

[0011] 2. This application achieves smooth release of the conveying pipeline when fire-fighting operations are initiated by the cooperation of the winding roller and the reciprocating screw, avoiding local bending caused by instantaneous stretching, which would prevent the foam liquid from being conveyed normally; after the fire-fighting operation is completed, the winding roller rotates in the opposite direction to rewind, and the reciprocating screw drives the sliding block to make the conveying pipeline tightly and evenly wrapped around the surface of the winding roller. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle.

[0015] Figure 3 This is a schematic diagram of the mobile frame structure of this utility model.

[0016] Figure 4 This is a schematic cross-sectional view of the movable frame structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the drive wheel structure of this utility model.

[0018] In the diagram: 1. Tunnel body; 11. Output pipe; 12. Threaded connector; 13. Conveying pipe; 2. Moving frame; 21. Servo motor; 22. Rotating shaft; 23. Drive wheel; 24. Limit wheel; 25. Winding roller; 26. Reciprocating screw; 27. Limit rod; 28. Sliding block; 281. Fixed rod; 3. Foam nozzle; 4. Slide rail; 41. Track groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example: Figure 1-5As shown, this utility model provides a tunnel fire-fighting device, including a fire pump, a foam liquid pump, a corresponding water supply industrial pipeline control valve group, a fire alarm control system, a tunnel body 1, and foam nozzles 3. Two sets of symmetrically distributed slide rails 4 are fixedly installed on the upper inner wall of the tunnel body 1. The slide rails 4 are made of high-strength alloy steel, and their surfaces are treated with wear-resistant materials to adapt to the complex environment of the tunnel, which is humid and dusty. A movable frame 2 is provided on one side of each set of slide rails 4. The movable frame 2 is a frame structure made of lightweight aluminum alloy material, which reduces the overall weight while ensuring structural strength. Four evenly distributed drive wheels 23 are rotatably installed on the inner side of each of the two movable frames 2. The surface of the drive wheels 23 is covered with an anti-slip rubber layer to prevent slippage during movement. The middle of the two sets of drive wheels 23 is fixed... A rotating shaft 22 is fixedly installed. The rotating shaft 22 is made of high-strength stainless steel and has been quenched to ensure that it is not easily deformed under long-term high-load operation. The top of the two rotating shafts 22 is equipped with a drive assembly. Four evenly distributed limit wheels 24 are rotatably installed on one side of each of the two moving frames 2. The limit wheels 24 are made of nylon and have good wear resistance and self-lubrication. A winding roller 25 is rotatably installed in the middle of one side of each of the two moving frames 2. The surface of the winding roller 25 is provided with anti-slip texture, which can effectively prevent the conveying pipe 13 from slipping during the winding process. The outer surface of the two winding rollers 25 is wound with the conveying pipe 13. The conveying pipe 13 is made of high-pressure resistant and corrosion-resistant rubber. Output pipes 11 are fixedly installed on both sides of the tunnel body 1. The output pipes 11 are interconnected with the external conveying foam pipe.

[0021] A reciprocating screw 26 is rotatably mounted on the middle of one side of each of the two moving frames 2. A sliding block 28 is mounted on the upper part of each of the two reciprocating screws 26 for mutual cooperation. Two symmetrically distributed fixing rods 281 are fixedly mounted on the top of each of the two sliding blocks 28. The fixing rods 281 are connected to the sliding blocks 28 with high-strength bolts to ensure a firm connection. The conveying pipe 13 is slidably locked in the middle of the two fixing rods 281. A pressure sensor is installed on the sliding block 28 to detect the force on the conveying pipe 13. When the pressure exceeds a preset threshold, it is fed back to the control system to adjust the moving speed of the moving frame 2, thereby adjusting the operating state of the winding roller 25 and the reciprocating screw 26 to prevent the conveying pipe 13 from being damaged due to excessive force.

[0022] The drive assembly includes a servo motor 21, which is fixedly installed on one side of the top of the movable frame 2. The top of the rotating shaft 22 is fixedly installed on the drive end of the servo motor 21. The servo motor 21 is a high-precision, high-response servo motor. Its rotating shaft 22 is connected to the servo motor 21 by a high-precision coupling to ensure stable power transmission. Under the drive of the servo motor 21, the rotating shaft 22 can be rotated, that is, the drive wheel 23 can be rotated.

[0023] One of the limiting wheels 24 is connected to one side of the winding roller 25 via a transmission belt. The synchronous belt is made of polyurethane and has a toothed design to ensure that there is no slippage during transmission. The transmission belt allows the winding roller 25 to rotate synchronously with the limiting wheel 24.

[0024] The winding roller 25 is connected to the reciprocating lead screw 26 via a transmission belt, so that the winding roller 25 rotates synchronously under the transmission belt.

[0025] Limiting rods 27 are fixedly installed on one side of the lower part of both movable frames 2. The lower parts of the two sliding blocks 28 are slidably locked on the outer surface of the limiting rods 27. By setting the limiting rods 27, the sliding blocks 28 can be limited, ensuring that the sliding blocks 28 can slide back and forth under the rotation of the reciprocating screw 26, instead of rotating together.

[0026] Both sets of slide rails 4 have a track groove 41 in the middle of one side, and multiple limiting wheels 24 are slidably locked inside the track groove 41. By setting the track groove 41, the limiting wheels 24 are locked inside the track groove 41 to limit the movement of the moving frame 2 and ensure that the moving frame 2 can move stably along the slide rail 4.

[0027] Threaded connectors 12 are fixedly installed on one side of each of the two output pipes 11. Both conveying pipes 13 are threadedly connected to the threaded connectors 12. A sealing gasket is provided at the connection of the threaded connectors 12. By setting the threaded connectors 12, the conveying pipes 13 and the output pipes 11 can be quickly connected.

[0028] Working principle: When a fire occurs in the tunnel, the rainforest alarm valve and the foam liquid control solenoid valve open rapidly after receiving the start electrical signal from the alarm controller of the fire control center, starting the fire pump and the foam liquid pump. Water enters the inlet of the proportioning mixer after passing through the rainforest alarm valve. The foam liquid flows into the foam inlet of the proportioning mixer after passing through the foam liquid solenoid valve and the balance valve. The proportioning mixer mixes the water and the water-film foam liquid and sends it to the pipeline network. It is output through the output pipe 11, so that the foam liquid enters the interior of the delivery pipe 13. Under the delivery of the delivery pipe 13, the liquid is sprayed out from the foam nozzle 3.

[0029] At the same time, the servo motor 21 starts under the control of the alarm controller in the fire control center, driving the drive wheel 23 to rotate. Through the transmission of the rotating shaft 22, another drive wheel 23 rotates synchronously with it, thereby driving the moving frame 2 to slide along the slide rail 4, thereby moving its foam nozzle 3 to the fire area to achieve the fire extinguishing effects of suffocation, emulsification, isolation and cooling.

[0030] As the moving frame 2 moves, the limiting wheel 24 contacts the track groove 41 in the middle of the slide rail 4, causing the limiting wheel 24 to move along with the moving frame 2. Through the transmission of the synchronous wheel, the winding roller 25 is driven to rotate, so that the winding conveying pipe 13 is released, thus avoiding the conveying pipe 13 being too short and the movement being obstructed when the moving frame 2 moves.

[0031] After the fire is extinguished, the moving frame 2 is reset by the reverse drive of the servo motor 21. At the same time, the winding roller 25 rotates synchronously to wind the conveying pipe 13. Under the drive of another synchronous wheel, the reciprocating screw 26 rotates, which drives the sliding block 28 that works with it to move back and forth. Since the conveying pipe 13 is located in the middle of the two fixed rods 281 on the upper part of the sliding block 28, the conveying pipe 13 can be evenly wound on the outer surface of the winding roller 25, thereby completing the retraction of the conveying pipe 13.

[0032] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A tunnel fire-fighting device comprising a fire-fighting water pump, a foam pump, a corresponding set of water supply industry pipe control valves, a fire alarm control system, a tunnel main body (1) and a foam nozzle (3), characterized in that: Two sets of symmetrically distributed slide rails (4) are fixedly installed on the upper part of the inner wall of the tunnel body (1). A movable frame (2) is provided on one side of each of the two sets of slide rails (4). Four evenly distributed drive wheels (23) are rotatably installed on the inner side of each of the two movable frames (2). A rotating shaft (22) is fixedly installed in the middle of each of the two sets of drive wheels (23). A drive assembly is provided at the top of each of the two rotating shafts (22). Four evenly distributed limit wheels (24) are rotatably installed on one side of each of the two movable frames (2). A winding roller (25) is rotatably installed in the middle of one side of each of the two movable frames (2). A conveying pipe (13) is wound around the outer surface of each of the two winding rollers (25). An output pipe (11) is fixedly installed on both sides of the tunnel body (1). The output pipe (11) is connected to the external conveying foam pipe.

2. A tunnel fire apparatus as defined in claim 1, wherein, A reciprocating screw (26) is rotatably mounted on the middle of one side of each of the two moving frames (2). A sliding block (28) is mounted on the upper part of each of the two reciprocating screws (26) for mutual cooperation. Two symmetrically distributed fixed rods (281) are fixedly mounted on the top of each of the two sliding blocks (28). The conveying pipe (13) is slidably locked in the middle of the two fixed rods (281). A pressure sensor is mounted on the sliding block (28) to detect the force on the conveying pipe (13). When the pressure exceeds the preset threshold, it is fed back to the control system to adjust the moving speed of the moving frame (2), thereby adjusting the running state of the winding roller (25) and the reciprocating screw (26).

3. A tunnel fire apparatus as defined in claim 1, wherein, The drive assembly includes a servo motor (21), which is fixedly mounted on one side of the top of the movable frame (2), and the top of the rotating shaft (22) is fixedly mounted on the drive end of the servo motor (21).

4. A tunnel fire-fighting device as described in claim 1, characterized in that, One of the limiting wheels (24) is connected to one side of the winding roller (25) via a drive belt.

5. A tunnel fire-fighting device as described in claim 2, characterized in that, The winding roller (25) and the reciprocating lead screw (26) are connected by a transmission belt.

6. A tunnel fire apparatus as defined in claim 2, wherein, Limiting rods (27) are fixedly installed on one side of the lower part of both movable frames (2), and the lower parts of the two sliding blocks (28) are slidably locked on the outer surface of the limiting rods (27).

7. A tunnel fire apparatus as defined in claim 1, wherein, Both sets of slide rails (4) have a track groove (41) in the middle of one side, and multiple limit wheels (24) are slidably locked inside the track groove (41).

8. A tunnel fire apparatus as defined in claim 1, wherein, Threaded connectors (12) are fixedly installed on one side of each of the two output pipes (11), and both conveying pipes (13) are threadedly connected to the threaded connectors (12). A sealing gasket is provided at the connection of the threaded connectors (12).

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