A tunnel portal protection door

Abstract

The utility model relates to tunnel engineering safety protection equipment technical field provides a kind of tunnel chamber protective door, including door body, and door body includes: protective layer, functional layer and fireproof layer;Wherein, protective layer is set at the outside of door body, functional layer is set at the inside of door body, fireproof layer is set between protective layer and functional layer, and protective layer, fireproof layer and functional layer are detachably connected.The utility model is by adopting multilayer structure design, effectively promotes the overall security of protective door, can realize the block transport of door body, on-site assembly, can adapt to tunnel narrow space, reduce construction difficulty, improve installation efficiency;Functional layer is set at the inside of door body, can be integrated electromagnetic shielding material according to need, effectively blocks the influence of external electromagnetic interference to chamber equipment, guarantees the normal operation of communication equipment and data security;Connecting place fills sealant to ensure the sealing property of door body, help to maintain the stability of chamber environment, prolong equipment service life.

Description

Technical Field

[0001] This utility model relates to the technical field of safety protection equipment for tunnel engineering, and in particular to a protective door for tunnel chambers. Background Technology

[0002] According to relevant standards such as the "Code for Fire Protection Design of Railway Engineering", when the length of a tunnel exceeds a certain range, cross passages and protective doors for equipment chambers must be installed inside the tunnel. Tunnel protective doors are important for protecting equipment in the chambers, ensuring smooth communication, facilitating emergency rescue and evacuation, and creating escape conditions for people inside the tunnel in case of disasters.

[0003] When high-voltage power equipment and precision communication equipment are stored in tunnel chambers, the safety, sealing and electromagnetic shielding performance of the protective doors are subject to strict requirements. However, traditional protective doors have problems such as simple structure, low installation efficiency and insufficient fire resistance. Utility Model Content

[0004] This utility model provides a tunnel chamber protection door to solve the defects of existing tunnel protection doors, such as simple structure and low installation efficiency.

[0005] This utility model provides a tunnel chamber protection door, comprising:

[0006] The door body includes:

[0007] A protective layer is provided on the outside of the door.

[0008] The functional layer is located on the inner side of the door body;

[0009] A fireproof layer is disposed between the protective layer and the functional layer, and the protective layer, the fireproof layer and the functional layer are detachably connected.

[0010] The tunnel chamber protection door provided by this utility model also includes:

[0011] Door frame embedded parts, which are embedded in the tunnel wall;

[0012] A door frame, which is connected to the door frame embedded parts.

[0013] According to the tunnel chamber protection door provided by this utility model, multiple locking devices are provided on both sides of the door body, and the locking devices include:

[0014] A keyhole is located on the door frame;

[0015] A locking pin is axially movable in the door body and can be inserted into or disengaged from the lock hole;

[0016] A hydraulic mechanism acts on the locking pin to drive the locking pin to move axially.

[0017] According to the tunnel chamber protection door provided by this utility model, the functional layer is a reinforced frame.

[0018] According to the tunnel chamber protection door provided by this utility model, a drainage groove is provided at the bottom of the door frame.

[0019] According to the tunnel chamber protection door provided by this utility model, the protective layer has a thickness of 1000mm, the fireproof layer has a thickness of 500mm, and the reinforcing frame has a thickness of 350mm.

[0020] According to the tunnel chamber protection door provided by this utility model, the door body is a double-door structure, capable of opening into the tunnel chamber, including:

[0021] First protective door;

[0022] The second protective door is positioned opposite the first protective door.

[0023] According to the tunnel chamber protection door provided by this utility model, the door body is a single-opening door structure that can be opened into the chamber, and the functional layer is an electromagnetic shielding layer.

[0024] According to the tunnel chamber protective door provided by this utility model, the protective layer has a thickness of 700mm, the fireproof layer has a thickness of 500mm, and the electromagnetic shielding layer has a thickness of 350mm.

[0025] According to the tunnel chamber protection door provided by this utility model, heat dissipation grooves are reserved on both sides of the door frame.

[0026] This utility model provides a tunnel chamber protective door, comprising a door body, which includes a protective layer, a functional layer, and a fireproof layer. The protective layer is located on the outer side of the door body, the functional layer on the inner side, and the fireproof layer between the protective and functional layers. The protective, fireproof, and functional layers are detachably connected. This utility model, through its multi-layered structural design, effectively enhances the overall safety of the protective door. Because the protective, fireproof, and functional layers are detachably connected, the door body can be transported in sections and assembled on-site, adapting to the narrow spaces of tunnels, reducing construction difficulty, and improving installation efficiency. By placing the protective layer on the outermost side, directly facing the external environment, it provides physical protection against external impacts and damage. The fireproof layer, placed between the protective and functional layers, isolates flames and heat in the event of a fire, providing additional protection time for internal equipment and reducing losses. The functional layer, located on the inner side of the door body, can integrate electromagnetic shielding materials as needed, effectively blocking external electromagnetic interference from affecting equipment inside the tunnel, ensuring the normal operation of communication equipment and data security, and meeting the high standards required for protective doors in tunnel power chambers storing high-voltage power equipment and precision communication equipment. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a side view of a tunnel chamber protective door provided in an embodiment of this utility model.

[0029] Figure 2 This is a front view of a tunnel chamber protective door provided in an embodiment of this utility model.

[0030] Figure 3 This is a front view of a tunnel chamber protective door provided in another embodiment of this utility model.

[0031] Figure label:

[0032] 1. Door body; 11. First protective door; 12. Second protective door; 2. Door frame; 3. Door frame embedded parts; 4. Chain. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] The following is combined with Figures 1-3 This utility model describes a tunnel chamber protective door.

[0035] This utility model provides a tunnel chamber protection door, including a door body 1, which includes a protective layer, a functional layer, and a fireproof layer. The protective layer is disposed on the outside of the door body 1, the functional layer is disposed on the inside of the door body 1, and the fireproof layer is disposed between the protective layer and the functional layer. The protective layer, the fireproof layer, and the functional layer are detachably connected.

[0036] As can be seen from the above scheme, this utility model, through the adoption of a multi-layer structure design, can effectively improve the overall safety of the protective door. Since the protective layer, fireproof layer, and functional layer adopt a detachable connection method, the door body 1 can be transported in sections and assembled on-site, which can adapt to the narrow space of the tunnel, reduce the construction difficulty, and improve the installation efficiency. By placing the protective layer on the outermost side, directly facing the external environment, it can provide physical protection against external impacts and damage. The fireproof layer is placed between the protective layer and the functional layer, which can isolate flames and heat in the event of a fire, providing additional protection time for internal equipment and reducing losses. The functional layer is set on the inner side of the door body 1, and electromagnetic shielding materials can be integrated as needed to effectively block the influence of external electromagnetic interference on the equipment inside the tunnel, ensuring the normal operation of communication equipment and data security, and meeting the high standard requirements for protective doors when storing high-voltage power equipment and precision communication equipment in the tunnel power cavern.

[0037] Optionally, after the protective layer, functional layer and fireproof layer are transported to the site, they can be assembled by bolt connection, and the joints are filled with sealant, such as fire-resistant sealant, which improves the fire resistance and sealing of the door body 1, ensures the sealing of the door body 1, helps maintain the stability of the environment inside the cave, and extends the service life of the equipment.

[0038] In this embodiment, it also includes: a door frame embedded part 3 and a door frame 2. The door frame embedded part 3 is embedded in the tunnel wall, and the door frame 2 is connected to the door frame embedded part 3. In this way, it is ensured that the door frame 2 can be firmly set in the concrete wall of the tunnel. The door frame 2 and the door frame embedded part 3 can be fixed together by bolts. In addition, the door frame 2 and the door frame embedded part 3 can also be fixed by welding, or fixed by both bolts and welding.

[0039] Preferably, the door frame embedded part 3 includes an anchor plate and an anchoring steel bar. The anchor plate is L-shaped and is connected to both sides of the door frame 2 to ensure the connection strength between the anchor plate and the door frame 2. The anchoring steel bar is embedded in the concrete wall at an angle to suit situations where the wall thickness is less than the length of the anchoring steel bar.

[0040] In this embodiment, the door body 1 is provided with a locking device for locking the tunnel protection door and controlling the opening or closing of the protection door. The locking device includes a lock hole, a locking pin and a hydraulic mechanism. The lock hole is provided in the door frame 2. The locking pin is movably provided in the door body 1 along the axial direction and can be inserted into or disengaged from the lock hole. The hydraulic mechanism acts on the locking pin to drive the locking pin to move along the axial direction.

[0041] Preferably, the system also includes an electrically controlled valve, such as a solenoid valve, which controls the flow of hydraulic oil via an electrical signal, thereby driving the locking pin to move axially. An electric hydraulic pump replaces the manual pump, and the pump is started or stopped by a remote control signal. When an open or closed command is sent remotely, the control center sends an electrical signal to trigger the electro-hydraulic control valve to switch the direction of the hydraulic oil circuit, causing the hydraulic oil to push the piston and move the locking pin into or out of the lock hole. To achieve remote operation, a controller, such as a PLC or an industrial-grade microcontroller, can be installed near the door body 1 to receive remote commands and control the hydraulic mechanism. A wireless communication module, such as 4G / 5G or Wi-Fi, can be added to the controller to receive remote control signals and send remote commands via a mobile app, computer software, or a dedicated control terminal.

[0042] Preferably, a pressure sensor is also provided to detect the operating status of the hydraulic system and ensure the normal operation of the door 1.

[0043] Optionally, the locking device of the door 1 adopts a five-point locking device, including a main locking point (center locking point) located near the door handle, and secondary locking points (four auxiliary locking points) distributed at the upper and lower ends and sides of the door 1. The main locking point and the four secondary locking points can be connected by a linkage transmission. When the door handle is turned manually, the linkage drives all locking points to move synchronously. Alternatively, it can be combined with an electric actuator such as a motor or hydraulic mechanism to achieve automated operation through remote control. It should be noted that the five-point locking device is existing technology, and its structure and principle are not the focus of this article and will not be elaborated here.

[0044] In one embodiment, the tunnel chamber is a power equipment chamber. The door 1 includes a protective layer, a reinforcing frame, and a fireproof layer. A drainage groove is provided at the bottom of the door frame 2 to prevent water seepage and improve sealing. The protective layer is a protective panel, and the functional layer is a reinforcing frame. The reinforcing frame is made of high-strength alloy steel and fire-resistant composite materials, with a compressive strength ≥160MPa and a fire resistance limit ≥90 minutes. This solves the problems of traditional protective doors, such as bulky structure, complex installation, and insufficient impact resistance.

[0045] In some specific embodiments, the protective layer is 1000 mm thick, the fireproof layer is 500 mm thick, and the reinforcing frame is 350 mm thick.

[0046] like Figure 2 As shown, in this embodiment, the door 1 is a double door structure with a total width of 3000mm and a height of 7000mm. The door frame 2 is 2000mm thick, which meets the requirements for the entry and exit of large power equipment. The door 1 includes a first protective door 11 and a second protective door 12. The second protective door 12 is the same size as the first protective door 11 and is arranged opposite to it, and can be opened into the cave.

[0047] Furthermore, one side of the door body 1 is movably connected to the door frame 2 via a hinge device, and a chain 4 is installed between the tunnel wall and the door body 1 near the movable connection point as an auxiliary or emergency fixing method for the locking device. That is, the chain 4 connects the door body 1 to the tunnel wall. For example, the two ends of the chain 4 are respectively anchored to the door body 1 reinforcement frame and the wall pre-embedded base. In extreme cases, the chain 4 can absorb some of the impact energy and prevent the door body 1 from detaching from the tunnel wall.

[0048] like Figure 2 As shown, the outer sides of the first protective door 11 and the second protective door 12 are movably connected to the door frame 2 through a hinge device, and both the first protective door 11 and the second protective door 12 are connected to the tunnel walls on both sides through chains 4.

[0049] The protective door for power equipment chambers provided in this embodiment has the following advantages:

[0050] 1. The gate body 1 is divided into left and right parts. The gate body 1 adopts a multi-layer detachable connection method to realize modular assembly, adapt to different tunnel sizes, facilitate transportation and on-site installation, improve construction efficiency, and facilitate later maintenance.

[0051] 2. Key components such as hinges and sealing strips can be scaled down proportionally to ensure strength while reducing overall weight.

[0052] 3. A drainage groove is installed at the bottom of door frame 2 to prevent water seepage and improve sealing.

[0053] 4. Excellent fire and explosion protection performance, capable of withstanding high temperatures of 1000℃ and impact loads of level 6.

[0054] In another embodiment, the tunnel chamber is a communication chamber. Door 1 includes a protective layer, an electromagnetic shielding layer, and a fireproof layer. The bottom of the door frame 2 is equipped with a drainage groove to prevent water seepage and improve sealing. The protective layer is made of high-strength alloy steel plate, the middle layer is a fireproof and heat-insulating layer, and the inner layer integrates an electromagnetic shielding layer. During on-site assembly, the outer alloy steel plate and the inner electromagnetic shielding layer can be laser-welded together. The middle layer is filled with refractory ceramic fiber. The overall compressive strength is ≥160MPa, the fire resistance limit is ≥90 minutes, and the electromagnetic shielding effectiveness is ≥60dB. It features high strength, fire and explosion resistance, lightweight design, and modular construction, effectively ensuring the safe operation and long-term stability of tunnel communication equipment.

[0055] Preferably, heat dissipation grooves are reserved on both sides of the door frame 2, which, combined with the internal ventilation structure, ensures the heat dissipation needs of the communication equipment.

[0056] Optionally, a 60mm deep drainage groove is provided at the bottom of the door frame 2, and a 100mm wide heat dissipation groove is reserved on both sides of the door frame 2.

[0057] like Figure 3 As shown, door 1 is a single-leaf door structure that can be opened into the interior of the cave.

[0058] In some specific embodiments, the protective layer is 700 mm thick, the fireproof layer is 500 mm thick, and the electromagnetic shielding layer is 350 mm thick.

[0059] like Figure 3 As shown, one side of the door body 1 is movably connected to the door frame 2 via a hinge device, and a chain 4 is installed between the tunnel wall and the door body 1 near the movable connection point as an auxiliary or emergency fixing method for the locking device. That is, the chain 4 connects the door body 1 to the tunnel wall. For example, the two ends of the chain 4 are respectively anchored to the door body 1 reinforcement frame and the wall pre-embedded base. In extreme cases, the chain 4 can absorb some of the impact energy and prevent the door body 1 from detaching from the tunnel wall.

[0060] The protective door for communication tunnels provided in this embodiment has the following advantages:

[0061] 1. The gate body 1 adopts a multi-layer detachable connection method to achieve modular assembly, adapt to different tunnel sizes, facilitate transportation and on-site installation, improve construction efficiency, and facilitate later maintenance.

[0062] 2. Key components such as hinges and sealing strips can be scaled down proportionally to ensure strength while reducing overall weight.

[0063] 3. Drainage grooves are provided at the bottom of door frame 2 to prevent water seepage and improve sealing. Heat dissipation grooves are reserved on both sides of door frame 2, which, together with the internal ventilation structure, ensure the heat dissipation needs of communication equipment.

[0064] 4. The integrated design of fireproof, waterproof and electromagnetic shielding ensures the safety of communication equipment.

[0065] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tunnel chamber protective door, characterized in that, include: Door body (1), the door body (1) includes: A protective layer is provided on the outside of the door body (1); The functional layer is located on the inner side of the door body (1); A fireproof layer is disposed between the protective layer and the functional layer, and the protective layer, the fireproof layer and the functional layer are detachably connected.

2. The tunnel chamber protective door according to claim 1, characterized in that, Also includes: Door frame embedded part (3), the door frame embedded part (3) is embedded in the tunnel wall; Door frame (2), the door frame (2) is connected to the door frame embedded part (3).

3. The tunnel chamber protective door according to claim 2, characterized in that, The door (1) is provided with multiple locking devices on both sides, the locking devices including: A keyhole is provided in the door frame (2); A locking pin is axially movable in the door body (1) and can be inserted into or disengaged from the lock hole; A hydraulic mechanism acts on the locking pin to drive the locking pin to move axially.

4. The tunnel chamber protective door according to claim 2 or 3, characterized in that, The functional layer is a reinforced frame.

5. The tunnel chamber protective door according to claim 4, characterized in that, The bottom of the door frame (2) is provided with a drainage groove.

6. The tunnel chamber protective door according to claim 4, characterized in that, The protective layer is 1000mm thick, the fireproof layer is 500mm thick, and the reinforcing frame is 350mm thick.

7. The tunnel chamber protective door according to claim 4, characterized in that, The door (1) is a double door structure that can be opened into the interior of the opening, including: First protective door (11); The second protective door (12) is arranged opposite to the first protective door (11).

8. The tunnel chamber protective door according to claim 2 or 3, characterized in that, The door (1) is a single-door structure that can be opened into the cave, and the functional layer is an electromagnetic shielding layer.

9. The tunnel chamber protective door according to claim 8, characterized in that, The protective layer is 700mm thick, the fireproof layer is 500mm thick, and the electromagnetic shielding layer is 350mm thick.

10. The tunnel chamber protective door according to claim 8, characterized in that, The door frame (2) has heat dissipation grooves reserved on both sides.

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