Tunnel fire-fighting device and special fire-fighting track

Abstract

The utility model relates to the technical field of tunnel safety, in particular to a tunnel fire-fighting device which comprises a rail car, a fire extinguishing device and a movable groove body, and the rail car is installed on a special fire-fighting rail through a sliding block I and driven by a driving wheel assembly; the fire extinguishing device is arranged in a containing groove in the top of the movable groove body, and a sliding block II matched with the track is arranged on the back face of the movable groove body. The rail car further comprises a vertical connecting piece, and the front end and the rear end of the movable groove body are clamped through two connecting arms arranged at the top end of a vertical support. The fire extinguishing device is arranged in the movable groove body, the movable groove body is installed on the guide rail arranged on the rail through the sliding block II, and therefore the rail bears the weight of the whole fire extinguishing device finally, and when the rail car moves, the connecting arm pushes the movable groove body to move synchronously along with the rail car. In the process, only the friction force between the sliding block II and the rail needs to be overcome, so that the problem that the fire extinguishing device is inconvenient to carry due to overweight is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel safety, in particular to a tunnel fire-fighting device and a special fire-fighting track. Background Technique

[0002] Tunnel fires caused by reasons such as vehicle spontaneous combustion in the tunnel are likely to trigger chain accidents and cause irreparable thermal damage to the tunnel concrete structure. In addition, with the development of new energy electric vehicles, toxic gases generated by the combustion of automobile batteries can instantly cause suffocation and death. Therefore, tunnel fire-fighting is a necessary emergency fire-fighting measure. Since the fire location is uncertain, mobile fire-fighting is required, that is, a mobile device is needed to carry the fire-fighting device to move to any section in the tunnel and start the fire extinguisher to extinguish the fire in the range where the burning vehicle is located.

[0003] For a mobile fire-fighting device used in a tunnel, the basic conditions it needs to possess include a mobile carrier, a fire-fighting device (fire extinguisher bottle), and a power source. First of all, the fire-fighting device is heavy. If it is installed on the mobile carrier, it will make the structure of the mobile carrier complex and cause the entire mobile carrier to be too heavy. In addition, similarly, if a mobile power source is set, in order to meet its long-term operation, the carried power source needs to have a large capacity. Based on the current battery technology, a large capacity means a large weight of the battery, which will also increase the load of the mobile device. Summary of the Invention

[0004] One of the purposes of the utility model is to provide a movable tunnel fire-fighting device that can meet the tunnel fire-fighting requirements. By setting an independent mobile tank to reasonably place the fire-extinguishing device, the tunnel fire-fighting device will not have the problems raised in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A tunnel fire-fighting device includes a rail vehicle, a fire-extinguishing device, and a mobile tank. The lower part of the rail vehicle has a horizontally arranged rectangular bottom plate. Above the four corners of the bottom plate, slider I is symmetrically arranged. The entire rail vehicle is installed on the track through slider I. Above the middle of the bottom plate, a driving wheel assembly for driving the rail vehicle to move is arranged, and an electric control center for controlling the entire fire-fighting device is arranged on the back of the bottom plate; the fire-extinguishing device is arranged in the accommodating groove at the top of the mobile tank, and slider II that cooperates with the track is arranged on the back of the mobile tank; the rail vehicle also includes a vertical connecting piece, and the vertical connecting piece includes a vertical bracket extending upward from one side of the bottom plate. At the top of the vertical bracket, two connecting arms are symmetrically arranged, and the front ends of the two connecting arms extend to fit the front and rear ends of the mobile tank, so that when the rail vehicle moves, the connecting arms push the mobile tank to move synchronously.

[0006] In the above technical solution, the fire extinguishing device is arranged in the movable tank body, and the movable tank body is installed on the guide rail arranged on the track through the slider II. Therefore, finally, the entire weight of the fire extinguishing device is borne by the track. When the rail vehicle moves, the connecting arm pushes the movable tank body to move synchronously with the rail vehicle. In this process, only the friction between the slider II and the track needs to be overcome, thus solving the problem that it is inconvenient for the fire fighting device to carry due to the excessive weight of the fire extinguishing device.

[0007] As a preferred solution, the fire extinguishing device is filled with liquid fire extinguishing agent and has a liquid outlet and an air inlet. A nozzle assembly pointing to the lane is arranged on the side of the rail vehicle, and the liquid outlet is connected to the nozzle assembly through a spray pipe; the fire fighting device further includes a high-pressure gas cylinder. An electromagnetic valve is installed at the bottle mouth of the high-pressure gas cylinder and is connected to the air inlet of the fire extinguishing device through a ventilation pipe. The arranged high-pressure gas cylinder increases the pressure inside the fire extinguishing device by releasing high-pressure gas, so that the internal fire extinguishing agent is sprayed out in a fine mist. Using a high-pressure gas cylinder instead of an air pump can not only effectively reduce the weight of the entire tunnel fire fighting device, but also spray the fire extinguishing agent by quickly increasing the pressure inside the fire extinguishing device.

[0008] As a preferred solution, the nozzle assembly includes a nozzle head connected to the spray pipe and a mounting seat connected to the rail vehicle. The nozzle head is installed on the mounting seat through the mounting shaft I and enables the nozzle of the nozzle head to deflect up and down around the mounting shaft I; the nozzle assembly further includes a meshing gear disk coaxially and fixedly arranged with the mounting shaft I, and a worm driven by a deflection motor, and the worm meshes with the meshing gear disk. The spraying direction of the nozzle head is adjusted through the cooperation of the worm and the meshing gear disk, so that the sprayed fire extinguishing agent can be directly aimed at the disaster area, making the limited fire extinguishing agent all used for fire fighting. Therefore, the nozzle assembly with adjustable spraying direction can effectively improve the fire extinguishing efficiency.

[0009] As a preferred solution, this tunnel fire fighting device does not carry a mobile power source, and the entire device contacts through a conductive band preset on the power connection pole arranged on the rail vehicle; the power connection pole is movably installed on the rail vehicle through the mounting shaft II. The lower end of the power connection pole is connected to the electric control center through a connecting wire, and a traction spring for pulling the power connection pole is arranged on the rail vehicle. Under the action of this traction spring, the power connection pole keeps in contact with the conductive band. By presetting the conductive band along the moving path of the tunnel fire fighting device, the entire tunnel fire fighting device is connected to the conductive band through the arranged power connection pole, thus ensuring that the fire fighting device has stable and continuous electric energy, and since no mobile power source is used, the weight of the entire device can be effectively reduced.

[0010] As a preferred solution, the tunnel fire-fighting device further includes an inspection component for monitoring the tunnel environment. When the inspection component detects smoke or a high-temperature area in the tunnel, it sends an instruction to the electronic control center, and the electronic control center controls the fire-fighting device to implement fire-fighting and rescue. The provided fire-fighting device will move back and forth in the tunnel. The provided inspection component can automatically identify a tunnel fire and transmit a signal to the electronic control center, and then the electronic control center controls the rail vehicle to move to the location of the fire and controls the spraying of fire extinguishing agent, so as to realize the automatic fire-fighting of the fire-fighting device and facilitate timely rescue of the fire in the tunnel.

[0011] Another object of the present invention is to provide a fire-fighting special track, which serves as the special walking track of the above-mentioned tunnel fire-fighting device and provides basic conditions for the normal operation of the tunnel fire-fighting device.

[0012] To achieve the above object, the present invention provides the following technical solution: The fire-fighting special track of the tunnel fire-fighting device includes a guiding part and an installation part. The lower part of the guiding part has a horizontally arranged lower transverse arm, and the upper part has two symmetrically arranged and upwardly extending upper extension arms, and a sliding cavity with an open top is formed between the two upper extension arms; Two upper tracks extending along the length direction of the track are symmetrically arranged at the bottom of the sliding cavity, and lower tracks extending along the length direction of the track are symmetrically arranged on the front sides of the two ends of the lower transverse arm.

[0013] This fire-fighting special track has upper and lower layers of tracks, which can respectively install the rail vehicle and the moving tank body of the fire-fighting device. Specifically, the provided rail vehicle is installed on the lower track through slider I, and the provided sliding cavity is used to accommodate the moving tank body in the fire-fighting device, and slider II arranged at the lower part of the moving tank body is installed on the upper track. Therefore, this track can independently support the moving tank body and the fire extinguishing device.

[0014] As a preferred solution, the installation part is a hollow structure, and the surface that fits the wall is a fitting plane. A series of installation holes are arranged along the length direction of the track on this fitting plane; The installation holes penetrate the installation part transversely, and one end of each installation hole is an access hole with a diameter larger than the nut diameter of the installation bolt, and extends along the length direction of the track from one side of the access and exit to form a long strip-shaped limiting hole. The production length of the track is affected by various factors. Therefore, multiple tracks need to be horizontally butt-jointed and assembled to meet the requirement of the rail vehicle moving in the full-length tunnel. By inserting the nut of the installation bolt into the interior of the installation part from the access hole and then horizontally pushing the track to make the installation bolt enter the limiting hole, the purpose of quickly installing all tracks can be achieved. And because the installation holes are arranged transversely, the position of the track can be finely adjusted by translation, so as to avoid the situation that the track cannot be correctly installed due to the spacing error of the installation bolts.

[0015] As a preferred solution, two contact ridges extending along the length direction of the track are symmetrically arranged on the front surface of the lower cross arm, and several grooves extending along the length direction of the track are formed on the front surface of the contact ridges. The arranged contact ridges serve as a dedicated structure for the driving wheel assembly. The running wheels of the driving wheel assembly contact the top surface of the contact ridges. Since the top of the contact ridges has grooves, dust will fall into the grooves, which can prevent dust from affecting the normal driving of the driving wheel assembly.

[0016] As a preferred solution, the installation part is located above the lower cross arm, and a conductive strip extending along the length direction of the track is arranged on the back surface of the installation part. The power connection rod contacts the conductive strip to continuously supply the electric energy required for the entire tunnel fire-fighting device. Installing the conductive strip along with the track can, firstly, use the track to accurately determine the installation position of the conductive strip and ensure good contact between the power connection rod of the track vehicle and it. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0018] Figure 1 is a schematic cross-sectional structure diagram of the fire-fighting dedicated track provided by the embodiment of the present utility model;

[0019] Figure 2 is Figure 1 a schematic three-dimensional structure diagram of the fire-fighting dedicated track shown;

[0020] Figure 3 is a schematic plan structure diagram of the tunnel fire-fighting device in the installation state provided by the embodiment of the present utility model;

[0021] Figure 4 is Figure 3 a schematic overall structure diagram of the tunnel fire-fighting device shown;

[0022] Figure 5 is Figure 4 a schematic three-dimensional structure diagram of the track vehicle in the tunnel fire-fighting device shown;

[0023] Figure 6 is a schematic structure diagram of the nozzle assembly used in the tunnel fire-fighting device;

[0024] Figure 7 is a schematic structure diagram of the moving tank body in the tunnel fire-fighting device;

[0025] Figure 8 is a schematic installation structure diagram of the power connection rod 9 in the tunnel fire-fighting device.

[0026] In the figure, there are rail vehicle 1, drive wheel assembly 2, suspension plate 3, gas cylinder fixing sleeve 4, high-pressure gas cylinder 5, connecting arm 6, moving trough 7, fire extinguishing agent bottle 8, power supply pole 9, nozzle assembly 10, inspection component 11, electronic control center 12, solenoid valve 13, smoke sensor 14, temperature sensor 15, bundle pipe rack 16, ventilation pipe 17, injection pipe 18, vertical support 19, hinge joint 20, connecting rod 21, reverse support leg 22, slider I 23, mounting assembly 24, slider II 25, nozzle 26, mounting seat 27, mounting shaft I 28, meshing gear disc 29, deflection motor 30, worm 31, mounting shaft II 32, connecting wire 33, traction spring 34, air inlet pipe 81, liquid outlet pipe 82, track 100, guiding part 101, mounting part 102, upper extension arm 103, lower transverse arm 104, sliding cavity 105, upper track 106, lower track 107, contact rib 108, sealing strip 109, conductive strip 110, mounting hole 111. Specific embodiments

[0027] The following will be combined with the drawings and embodiments to detail the implementation manner of the present application, so as to fully understand how the present application uses technical means to solve technical problems and achieve the implementation process of technical effects and implement accordingly.

[0028] The present utility model provides a tunnel fire-fighting device and a fire-fighting special track for installing the tunnel fire-fighting device, wherein Figure 1 and Figure 2 show the structural schematic diagram of the fire-fighting special track. As shown in the cross-sectional view of Figure 1 the horizontal section shown, it can be seen from this figure that the fire-fighting special track includes a guiding part 101 on the left and a mounting part 102 installed against the wall on the right. The lower part of the guiding part 101 has a horizontally arranged lower transverse arm 104, and the upper part has two symmetrically arranged and upwardly extending upper extension arms 103, and a sliding cavity 105 with an open top and a flat bottom is formed between the two upper extension arms 103; the fire-fighting special track has two layers of tracks. Among them, two upper tracks 106 extending along the track length direction are symmetrically arranged at the bottom of the sliding cavity 105, and lower tracks 107 extending along the track length direction are symmetrically arranged at the front ends of both ends of the lower transverse arm 104; in addition, the mounting part 102 is a hollow structure, and the surface in contact with the wall is a fitting plane. A series of mounting holes 111 are arranged along the track length direction on this fitting plane, and a conductive strip 110 is arranged along the length direction on the back of the mounting part 102.

[0029] The fire-fighting special track provided in this embodiment can achieve quick installation, as shown in Figure 2As shown in the figure, the mounting hole 111 runs horizontally through the mounting part 102, and one end of it is an access hole with a diameter larger than the nut diameter of the mounting bolt, and it extends along the length direction of the track from one side of the access port to form a long strip-shaped limiting hole. Before installing the track, it is necessary to set preset mounting bolts on the inner wall of the tunnel. By inserting the nut of the mounting bolt into the interior of the mounting part 102 from the access hole, and then horizontally pushing the track to make the mounting bolt enter the limiting hole, the purpose of quickly installing all tracks can be achieved. And because the mounting hole 111 is horizontally arranged, the position of the track can be finely adjusted by translation, thus avoiding the situation that the track cannot be correctly installed due to the spacing error of the mounting bolts. To ensure the installation stability, two sealing strips 109 that fit the wall are arranged one above the other on the fitting plane. After the installation of the track is completed, the sealing strips 109 provide a pre-tightening force to the track through deformation.

[0030] In addition, the fire-fighting special track is provided with two contact ridges 108 dedicated for the driving wheels of the tunnel fire-fighting device. The two contact ridges 108 are symmetrically arranged on the front surface of the lower transverse arm 104 and are located inside the lower track 107. The front surface of the contact ridge 108 has several grooves extending along the length direction of the track, and dust will fall into the grooves, and the driving wheels of the driving wheel assembly 2 press on the top surface of the contact ridge 108, which can prevent dust from affecting the normal driving of the driving wheel assembly 2.

[0031] As Figure 3 shown, the tunnel fire-fighting device provided in this embodiment includes a rail vehicle 1, a fire extinguishing agent bottle 8, and a moving tank body 7. Among them, the lower part of the rail vehicle 1 has a horizontally arranged rectangular bottom plate, and an electronic control center 12 for controlling the electrical components of the entire fire-fighting device is arranged on the back surface of the bottom plate. As shown in the figure, four right-angled reverse feet 22 are symmetrically arranged above the four corners of the bottom plate, and sliders I23 are arranged on the back surfaces of the reverse feet 22, and the entire rail vehicle 1 is installed on the track 100 through the sliders I23. A driving wheel assembly 2 is arranged between two sliders I23 on the same side, and the driving wheels of the driving wheel assembly 2 press on the top of the contact ridge 108, and the entire tunnel fire-fighting device is driven to move back and forth by the two driving wheel assemblies 2.

[0032] Combined with Figure 4 and Figure 7It can be seen that the fire extinguishing agent bottle 8 is arranged in the accommodating groove at the top of the movable tank body 7, and a slider II 25 cooperating with the upper track 106 is arranged on the back of the movable tank body 7. That is, the entire fire extinguishing agent bottle 8 and the movable tank body 7 are pressed on the track 100, and the weight of both is supported by the track 100. A vertical bracket 19 extending upward is arranged on the left side of the rectangular bottom plate. The top end of the vertical bracket 19 is hinged with two "L"-shaped connecting arms 6 through a hinge joint 20, and the front ends of the two connecting arms 6 extend to fit the front and rear ends of the movable tank body 7, so that the connecting arms 6 push the movable tank body 7 to move synchronously when the rail vehicle 1 moves. The used hinge joint 20 has a torsion spring, which can keep the connecting arms 6 in a state of clamping the movable tank body 7. In addition, a connecting rod 21 is arranged between the two connecting arms 6, and the connecting rod 21 presses on the surface of the fire extinguishing agent bottle 8 to increase the fixation of the fire extinguishing agent bottle 8.

[0033] In this embodiment, the fire extinguishing agent bottle 8 is filled with a liquid fire extinguishing agent, such as water. The fire extinguishing agent bottle 8 has a liquid outlet pipe 82 and a gas inlet pipe 81. A nozzle assembly 10 pointing to the lane is arranged on the back of the suspension plate 3 extending horizontally on the side of the rail vehicle 1. The nozzle assembly 10 is connected to the liquid outlet pipe 82 through a spray pipe 18. In addition, the fire fighting device further includes a high-pressure gas cylinder 5. The high-pressure gas cylinder 5 is arranged above the suspension plate 3 and is fixed to one side of the vertical bracket 19 through a gas cylinder fixing sleeve 4. An electromagnetic valve 13 is installed at the bottle mouth of the high-pressure gas cylinder 5 and is connected to the gas inlet pipe 81 of the fire fighting device through a ventilation pipe 17. To prevent the ventilation pipe 17 and the spray pipe 18 from swinging during movement, a tube bundle holder 16 for clamping both is arranged on the vertical bracket 19. In this embodiment, the electromagnetic valve 13 is controlled by the electric control center 12 to be opened. The high-pressure gas cylinder releases high-pressure gas to increase the pressure inside the fire fighting device, so that the internal fire extinguishing agent is sprayed out in a fine mist. Using a high-pressure gas cylinder instead of an air pump can not only effectively reduce the weight of the entire fire fighting device on the road, but also spray the fire extinguishing agent by quickly increasing the pressure inside the fire fighting device. For example, nitrogen with a compression ratio of about 700 can be filled in the high-pressure gas cylinder. After sufficient heat exchange, gasification and turbulent mixing, a dense and stable foam is formed. Therefore, liquid nitrogen foam will be mixed in the fine mist sprayed by the nozzle assembly 10 during spraying. The liquid nitrogen foam will quickly absorb a large amount of heat and gasify to quickly reduce the temperature of the combustible, and at the same time can quickly expand and reduce the oxygen volume fraction, thereby restricting the spread of the flame. When the oxygen content in the space around the fire source is reduced to 16% - 18%, the flame will be extinguished.

[0034] Since the location of a fire in a tunnel is uncertain, in this embodiment, the nozzle assembly 10 is configured to be angle-adjustable so as to spray the fire extinguishing agent. Specifically, the nozzle assembly 10 includes a nozzle head 26 connected to a spray pipe 18 and a mounting seat 27 connected to a suspension plate 3. The nozzle head 26 is mounted on the mounting seat 27 through a mounting shaft I28 such that the nozzle opening of the nozzle head 26 can deflect up and down around the mounting shaft I28. The nozzle assembly 10 further includes a meshing gear disk 29 fixedly arranged coaxially with the mounting shaft I28, and a worm 31 driven by a deflection motor 30, and the worm 31 meshes with the meshing gear disk 29. By controlling the start of the deflection motor 30 through an electric control center 12, the spraying direction of the nozzle head 26 can be adjusted, so that the ejected fire extinguishing agent can be directed exactly at the disaster area, enabling all the limited fire extinguishing agent to be used for fire extinguishing. Therefore, the nozzle assembly with an adjustable spraying direction can effectively improve the fire extinguishing efficiency.

[0035] The tunnel fire-fighting device provided in this embodiment is not equipped with a mobile power source. The entire device contacts a conductive strip 110 provided on a guide rail 100 through a power connection pole 9 provided on the right side of a rail vehicle 1, thereby providing continuous and stable electrical energy for the entire fire-fighting device. As Figure 6 shown, the power connection pole 9 is movably mounted on the rail vehicle 1 through a mounting shaft II32. The lower end of the power connection pole 9 is connected to the electric control center 12 through a connection line 33, and a traction spring 34 for pulling the lower end of the power connection pole 9 is provided on the rail vehicle 1. Under the action of the traction spring 34, the upper end of the power connection pole 9 tilts upward and maintains good contact with the conductive strip 110. In addition, the tunnel fire-fighting device further includes an inspection component 11 for monitoring the tunnel environment. The entire inspection component 11 is hoisted at the bottom of the rail vehicle 1 through a mounting component 24, and specifically includes a smoke sensor 14 and a temperature sensor 15. When the fire-fighting device reciprocates in the tunnel, the provided inspection component 11 can automatically identify a tunnel fire and transmit a signal to the electric control center, and then the electric control center controls the rail vehicle 1 to move to the location of the fire and controls the spraying of the fire extinguishing agent, thereby realizing the automatic fire-fighting of the fire-fighting device so as to provide timely rescue for the fire in the tunnel.

[0036] The tunnel fire-fighting device provided in this embodiment, as a on-site fire-fighting device, is mainly applicable to relatively enclosed areas such as long tunnels with a length of more than 1000 meters and extra-long tunnels. By adopting other inspection components, such as a camera device, a thermal imager, etc., it can be controlled by personnel in a monitoring room to monitor the situation in the tunnel, and at the same time, it can be remotely controlled to perform fire-fighting and rescue operations in real time. Of course, it can also be connected to an alarm device. For example, the alarm device is arranged at the entrance of the tunnel. When a fire occurs in the tunnel, the tunnel fire-fighting device sends a signal to the alarm device, thereby warning the vehicles that have not entered the tunnel to slow down and stop through the alarm device to prevent a chain accident caused by the fire.

[0037] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but rather use the difference in functions of components as the criterion for distinction. As used throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "comprising but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problems within a certain error range and basically achieve the technical effects.

[0038] The above description shows and describes two embodiments of the present invention, and should not be regarded as excluding other embodiments. It can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in related fields. As long as the changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, they should be within the protection scope of the appended claims of the present invention.

Claims

1. Tunnel fire-fighting device, characterized in that, It includes a rail vehicle, a fire extinguishing device and a movable tank. The lower part of the rail vehicle has a horizontally arranged rectangular bottom plate. Above the four corners of the bottom plate, slider I is symmetrically arranged. The whole rail vehicle is installed on the rail through slider I. Above the middle of the bottom plate, a driving wheel assembly for driving the rail vehicle to move is arranged, and an electric control center for controlling the whole fire fighting device is arranged on the back of the bottom plate. The fire extinguishing device is arranged in the accommodating groove at the top of the movable tank, and slider II matched with the rail is arranged on the back of the movable tank. The rail vehicle also includes a vertical connecting piece, which includes a vertical bracket extending upward from one side of the bottom plate. At the top of the vertical bracket, two connecting arms are symmetrically arranged, and the front ends of the two connecting arms extend to fit the front and rear ends of the movable tank, so that when the rail vehicle moves, the connecting arms push the movable tank to move synchronously.

2. The tunnel fire protection device according to claim 1, wherein: The fire extinguishing device contains liquid fire extinguishing agent, and has a liquid outlet and an air inlet. A nozzle assembly pointing to the lane is arranged on the side of the rail vehicle, and the liquid outlet is connected to the nozzle assembly through a spray pipe. The fire fighting device also includes a high-pressure gas cylinder. An electromagnetic valve is installed at the bottle mouth of the high-pressure gas cylinder, and the high-pressure gas cylinder is connected to the air inlet of the fire extinguishing device through a ventilation pipe.

3. The tunnel fire protection device according to claim 1, characterized in that: This tunnel fire fighting device is not equipped with a mobile power source. The whole device contacts an independently arranged conductive belt through a power connection rod arranged on the rail vehicle. The power connection rod is movably installed on the rail vehicle through mounting shaft II. The lower end of the power connection rod is connected to the electric control center through a connecting wire, and a traction spring for pulling the power connection rod is arranged on the rail vehicle. Under the action of this traction spring, the power connection rod keeps in contact state.

4. The tunnel fire protection device according to claim 1, wherein: This tunnel fire fighting device also includes an inspection component for monitoring the tunnel environment. When the inspection component detects smoke or a high-temperature area in the tunnel, it sends an instruction to the electric control center, and the electric control center controls the fire fighting device to implement fire rescue.

5. A fire - special track for the tunnel fire - fighting device described in claim 3, characterized in that: It includes a guiding part and a mounting part. The lower part of the guiding part has a horizontally arranged lower transverse arm, and the upper part has two symmetrically arranged and upwardly extending upper extension arms, and a sliding cavity with an open top is formed between the two upper extension arms. Two upper rails extending along the length direction of the rail are symmetrically arranged at the bottom of the sliding cavity, and two lower rails extending along the length direction of the rail are symmetrically arranged on the front sides of the two ends of the lower transverse arm.

6. The fire-fighting special track according to claim 5, wherein: The mounting part is a hollow structure. The side fitting the wall is a fitting plane, and a series of mounting holes are arranged on the fitting plane along the length direction of the rail. The mounting holes penetrate the mounting part transversely, and one end of each mounting hole is an access hole with a diameter larger than the nut diameter of the mounting bolt, and extends along the length direction of the rail from one side of the access port to form a strip-shaped limiting hole.

7. The fire-fighting special track according to claim 5, wherein: Two contact ridges extending along the length direction of the rail are symmetrically arranged on the front side of the lower transverse arm, and several grooves extending along the length direction of the rail are arranged on the front surface of the contact ridges.

8. The fire-fighting special track according to claim 5, characterized in that: The mounting part is located above the lower transverse arm, and a conductive belt extending along the length direction of the track is arranged on the back of the mounting part, and the power connection rod contacts the conductive belt.

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