Door machine structure of fireproof shielding door

Abstract

The utility model belongs to the technical field of railway station building construction and fire protection, and particularly relates to a fireproof type shielding door machine structure which comprises a shielding door and a concrete side plate serving as an upper supporting structure, and a steel structure frame and a fireproof door machine top box are fixed on the concrete side plate. Assembly gaps among the concrete side plates, the shielding door and the steel structure frame are blocked through fireproof structures, and each fireproof structure comprises a fireproof combined component and a fireproof cloth felt. The platform screen door system can be suitable for various current railway stations, effectively solves the fireproof safety problem of passengers in the current railway stations on the platform screen door system, and ensures the safety of fire rescue. Especially for an underground atrium type railway station, adverse effects on life safety of passengers and station operation evacuation when a train fire occurs are reduced to the maximum extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway passenger station building structure and fire protection, and specifically relates to a fireproof shielding door mechanism structure. Background Art

[0002] The function of the fireproof shielding door is to hinder and delay the spread of fire and smoke to the platform area when a fire occurs, giving the station personnel, passengers and firefighters time to evacuate and put out the fire. According to Article 4.3.4 of the "Fire Safety Technical Standard for Station-City Integration Project" DB11 / 1889-2021, it is clearly stipulated that the fire resistance integrity of the smoke-proof shielding door of the underground atrium rail station should not be less than 1.00h. At present, traditional shielding doors are mostly found in underground rail transit. Due to the low fire protection level of urban underground rail transit, they cannot meet the relevant fire protection requirements of underground railway hubs. For underground atrium railway passenger stations, the fire department requires that after a fire occurs, the shielding door alarm system will issue an alarm message, and then the train will enter the station and stop. After the train stops steadily, the shielding door will open to evacuate the passengers in the car to a safe area, and all personnel will be evacuated within 6 minutes. The shielding door can be opened and closed within 10 minutes. After the shielding door is closed, the station staff or firefighters can manually control the door opening and closing. According to the above fire protection design requirements, the traditional shielding door mechanism structure cannot meet the relevant technical actions.

[0003] At present, China is vigorously developing underground space, and many underground railway passenger stations have emerged. How to solve the relevant fire protection technical problems is an urgent problem to be solved in the design of shielding covers for atrium stations of underground railways.

[0004] In order to solve the deficiencies of the prior art, the purpose of the utility model is to provide a fireproof shielding door body and door mechanism structure to ensure that the door body and door mechanism structure maintain a safe and stable working state at a specific time, reduce fire losses, and improve escape efficiency. Utility Model Content

[0005] In order to solve the problem that the current specifications stipulate that ordinary platform shielding doors do not consider fire protection performance, the utility model designs a fireproof shielding door mechanism structure and fire protection method that can effectively solve the fire protection characteristics of related buildings that ordinary platform shielding doors cannot achieve.

[0006] The technical solution adopted by the utility model to solve this problem is:

[0007] A fireproof shielding door mechanism structure comprises a shielding door and concrete side panels as an upper supporting structure, a steel structure frame and a fireproof door mechanism top box are fixed to the concrete side panels, and assembly gaps between the concrete side panels, the shielding door and the steel structure frame are sealed by a fireproof structure, and the fireproof structure comprises a fireproof composite component and a fire-resistant cloth felt.

[0008] In one embodiment, the concrete side plate is a reinforced concrete plate with a thickness of 150 mm, and the steel structure frame is used to fix the fire door top box and is fixed to the concrete side plate by bolts.

[0009] In one embodiment, the upper top plate of the fire door top box is fixed to the concrete side plates of the supporting structure by bolts to achieve the sealing of the top box space and prevent smoke from spreading.

[0010] In one embodiment, the shielding door includes a shielding door fixed door and a shielding door sliding door. A driving motor and a door control unit are provided in the upper part of the top box of the fire door machine. The driving motor drives the pulley drag group through the transmission mechanism and then drives the shielding door sliding door to move. The internal components of the top box are fixed to the door machine beam by bolts.

[0011] In one embodiment, the glass on the door body of the fixed door of the shielding door is 6+12+6 thick high borosilicate fireproof hollow glass, and the glass on the door body of the sliding door of the shielding door is 8 thick high borosilicate fireproof glass.

[0012] In one embodiment, the fireproof composite component is used to seal the assembly gap between the concrete side plate and the shield door sliding door, and the fireproof composite component is fixed to the concrete side plate by bolts.

[0013] In one embodiment, the fireproof composite component is a combination of a rock wool board and a fireproof Porter board.

[0014] In one embodiment, the assembly gap between the fireproof composite component and the shielding door sliding door is sealed by a fire-resistant felt cloth, and the assembly gap between the steel structure frame and the shielding door sliding door is sealed by a fire-resistant felt cloth.

[0015] In one embodiment, the refractory cloth felt is a combination of inorganic cloth and aluminum silicate felt.

[0016] One end of the fire-resistant felt is fixed to the fire-resistant composite component / steel structure frame through a supporting plate and screws, and the other end of the fire-resistant felt is closely attached to the shielding door sliding door.

[0017] In one embodiment, the end of the fire-resistant felt close to the shield door sliding door is higher than the end close to the fire-resistant composite component / steel structure frame.

[0018] The second invention object of the utility model is to provide a fire prevention method for the fireproof shielding door mechanism structure described above, comprising the following steps:

[0019] S1: When a fire occurs and people need to escape from the train through the platform, the platform screen door alarm system will send out an alarm message, and then the train will enter the station and stop. After the train stops, the fire-proof platform screen door mechanism will open in conjunction with the fire protection mechanism.

[0020] S2: The drive motor and door control unit in the door mechanism drive the pulley and plate group through the transmission mechanism to drive the shield door sliding door to move. The alarm system sends out an alarm message, and then the door mechanism enters the emergency state;

[0021] S3: Within 10 minutes after the evacuation of personnel, the shielding door is closed, and the assembly gap between the fireproof composite component and the shielding door sliding door is blocked by fire-resistant cloth felt. The assembly gap between the steel structure frame and the shielding door sliding door is blocked by fire-resistant cloth felt to block the smoke and heat in the gap above the shielding door sliding door when a fire occurs. The door structure (including concrete side panels, steel structure frame, fire door top box, shielding door sliding door, shielding door fixed door and glass) should be able to remain intact and not collapse within 1 hour to buy time for controlling the spread of fire and rescue;

[0022] S4: After the evacuation is completed, firefighters can break the glass of the shielding door according to the specific situation of the fire and the instructions on the door body to put out the fire.

[0023] The advantages and positive effects of the utility model are:

[0024] 1. The utility model can be applied to various types of current railway passenger stations, effectively solving the fire safety problem of the current railway passenger station passengers in the platform screen door system, while ensuring the safety of fire rescue. Especially for underground atrium railway passenger stations, it can minimize the adverse effects on passenger life safety and station operation evacuation when a train fire occurs.

[0025] 2. The implementation of the utility model has the advantages of simple and fast construction, high degree of integration, high degree of assembly, and a more efficient, flexible and convenient construction process, which plays a very important role in promoting the development of platform screen door technology.

[0026] 3. Traditional shielding doors do not have the corresponding fireproof performance. After a fire occurs, the traditional door machine top box system cannot withstand the adverse effects of the fire temperature on the door machine. However, when a fire occurs, the door machine structure of the utility model can withstand the adverse effects of the fire temperature on the door machine, and the sliding door is controlled by the driving motor and the door control unit to open for personnel evacuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The technical solution of the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for the purpose of explanation and are not intended to limit the scope of the utility model. In addition, unless otherwise specified, these drawings are only intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0028] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0030] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0031] Figure 4 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the utility model in which the shielding door sliding door and the fireproof structure are assembled Figure 1 ;

[0033] Figure 6 This is a schematic diagram of the structure of the utility model in which the shielding door sliding door and the fireproof structure are assembled Figure 2 ;

[0034] Figure 7 It is a structural schematic diagram of the lower part of the sliding door of the shielding door of the utility model.

[0035] In the figure:

[0036] 1 Concrete side slab 2 Steel structure frame

[0037] 3 Fireproof composite components 301 Self-tapping screws

[0038] 302 Fireproof Porter Board 4 Fireproof Felt

[0039] 5 Fire door set top box 6 Shield door

[0040] 601 Stainless steel or galvanized steel profile 602 Fireproof and thermal insulation materials

[0041] 603 Fireproof Sealing Strip 604 Fireproof Pad

[0042] 605 M4 countersunk screw 606 shielding door sliding door

[0043] 7 Drive motor and door control unit 8 Transmission mechanism

[0044] 9 Pulley and drag plate set 10 Top box cover DETAILED DESCRIPTION

[0045] First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, can still be combined or deleted between these technical features (or their equivalents) to obtain more other embodiments of the present invention that may not be directly mentioned in this document. In addition, in order to simplify the drawings, the same or similar technical features may be marked only in one place in the same drawing.

[0046] In the present utility model, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection", "fixation", "screwing" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. The present utility model is described in detail below in conjunction with the accompanying drawings. Example

[0047] A fireproof shielding door mechanism structure comprises a shielding door 6 and a concrete side plate 1 as an upper supporting structure, a steel structure frame 2 and a fireproof door mechanism top box 5 are fixed to the concrete side plate 1, and the assembly gaps among the concrete side plate 1, the shielding door 6 and the steel structure frame 2 are blocked by a fireproof structure, and the fireproof structure comprises a fireproof composite component 3 and a fire-resistant cloth felt 4.

[0048] In this embodiment, the system includes five parts, namely, upper support structure concrete side plate 1, steel structure frame 2, fireproof composite component 3, fireproof felt 4, and fireproof door top box. Among them: the line side of the fireproof door top box 5 is a concrete side plate 1, and the platform side is covered with galvanized steel plate. The fireproof door top box 5 is provided with a shield door drive device (drive motor and door control unit). The drive device is arranged higher than the traditional shield door machine, and is as far away from the fire source as possible. All internal cables are flame-retardant, low-smoke, halogen-free cables with a fire resistance grade not lower than Class B, which meet the escape time requirements and reduce the adverse effects of smoke entering the door top box on the control unit, transmission mechanism and other components when a fire occurs.

[0049] The construction process of this embodiment is as follows:

[0050] The first step is to complete the pouring of the main concrete structure to form the upper support structure concrete side plate 1, using conventional reinforced concrete structure construction methods for construction;

[0051] In the second step, the prefabricated steel structure frame 2 is produced in the factory and fixed on the upper supporting structure concrete side plate 1;

[0052] The third step is to use the fireproof composite component 3 prefabricated in the factory to seal the gap between the door body and the upper supporting structure concrete side plate 1;

[0053] The fourth step is to fix the fire-resistant felt 4 to the side of the shield door sliding door structure through a support plate and screws to block the gap above the shield door sliding door;

[0054] The fifth step is to fix the fire door top box 5 to the upper supporting structure concrete side plate 1 by bolts.

[0055] The utility model can be applicable to various current railway passenger stations, and effectively solves the relevant safety problem that the platform screen doors of various current stations are not fire-proof, especially for railway passenger stations with underground atriums, which improves the safety of fire-fighting organization and rescue, and ensures the safety of life and property of passengers waiting in the station when a fire occurs in a train.

[0056] The utility model has the advantages of simple and fast construction and high degree of integration in implementation. The assembly degree is very high, and the construction process is more efficient, flexible and convenient, which plays a very great role in promoting the development of platform screen door technology.

[0057] Furthermore, in the present embodiment, it can also be considered that the concrete side plate 1 can be made of reinforced concrete material to isolate heat conduction when a fire occurs. Preferably, the concrete side plate 1 is a reinforced concrete plate with a thickness of 150 mm, using C40 grade concrete, and the main steel bars are HRB400 grade earthquake-resistant steel bars.

[0058] Furthermore, in this embodiment, it can also be considered that the steel structure frame 2 can be made of finished steel sections and fixed to the concrete side panels 1 to fix the fire door machine top box 5. Specifically: the steel structure frame 2 is fixed to the concrete side panels 1 as the upper supporting structure by bolts, and the upper top plate of the fire door machine top box 5 is fixed to the concrete side panels 1 as the upper supporting structure and the steel structure frame 2 by bolts to ensure the stability of the overall structure, achieve the stability and closure of the top box space, prevent smoke from spreading, and the steel structure frame 2 is coated with fire retardant paint.

[0059] Preferably, the steel structure frame 2 is used to fix the fire door top box 5 and is fixed to the concrete side plate 1 by bolts, and the gap below is sealed with a fireproof structure.

[0060] Furthermore, in this embodiment, it can also be considered that the upper top plate of the fire door box 5 is fixed to the concrete side plate 1 of the supporting structure by bolts to achieve the closure of the top box space and prevent smoke from diffusing. The side of the fire door box 5 is provided with a top box cover 10 that can be opened or closed for inspecting the internal components of the fire door box 5.

[0061] Furthermore, in the present embodiment, it can be considered that the shielding door 6 includes a shielding door fixed door and a shielding door sliding door 606, the material of the fire door set top box 5 is selected from finished galvanized steel plate, and the drive motor and door control unit (DCU) can be used to form a fire door structure. The drive motor and door control unit (DCU) 7 of the fire door set top box 5 are both located in the upper part of the top box, and the drive motor drives the pulley drag plate group 9 through the transmission mechanism 8, thereby driving the shielding door sliding door 606 to move. The internal components of the top box are fixed to the door machine beam by bolts, and the top cover plate of the top box is fixed to the concrete side plate 1 of the supporting structure by bolts, so as to realize the closure of the top box space and prevent smoke from spreading.

[0062] Furthermore, in this embodiment, it can also be considered that the door control unit is used to control the opening and closing of the shielding door and the sliding door and is centrally controlled by the fire control room system for personnel evacuation, and the door leaf can be opened manually after the personnel escape, and the process is simple and efficient.

[0063] Furthermore, in this embodiment, it can also be considered that the fireproof shield door body includes a shield door sliding door and a shield door fixed door. The shield door fixed door is fixed to the steel structure frame 2 by bolts or guide shoes, and there is no gap between the shield door fixed door and the concrete side plate, and it is closed with a galvanized steel plate; the shield door sliding door 606 is fixed to the top box support beam by a hanging piece. The installation of the shield door fixed door frame adopts a mechanical fixing method, and the shield door fixed door leaf glass adopts 6+12AR+6 thick high borosilicate fireproof hollow glass to improve the fire resistance limit; the shield door sliding door frame adopts a mechanical fixing method, and the glass on the door body of the shield door sliding door adopts 8 thick high borosilicate fireproof glass to improve the fire resistance limit.

[0064] The shielding door 6 is divided into two types according to the opening mode, one is a shielding door fixed door (fixed leaf door body), and the other is a shielding door sliding door (opening leaf door body), both of which include a shielding door frame and door leaf glass. Both door bodies are equipped with fireproof glass, and the glass type is high borosilicate fireproof glass. The shielding door frame is connected to the door leaf glass through a fireproof window-like structural system, and the system includes glass connectors, fireproof insulation materials, fireproof sealing strips, fireproof pads, etc. Figure 6-7As shown, the upper glass connector of the door leaf is made of 1.5mm thick stainless steel or galvanized steel profile 601, the interior of the 1.5mm thick stainless steel or galvanized steel profile 601 is filled with fireproof insulation material 602, the gap is filled with fireproof sealing strip 603, the lower part is filled with fireproof pad 604, and the door leaf glass connector is fixed with M4 countersunk screw 605. The main body of the shielding door frame is a steel structure and is painted with fireproof paint. Among them, the fixed leaf door body glass is 6+12+6 thick high borosilicate fireproof hollow glass, the sliding leaf door body glass is 8 thick high borosilicate fireproof glass, the fixed leaf glass density is 2.5, and the movable leaf single-layer glass is 2.7, which can meet the fire protection and noise requirements at the same time.

[0065] Furthermore, in this embodiment, it can also be considered that fire-proof expansion rubber is used to fill the gaps of the door frame during construction and installation. In the event of a fire, the preheated expansion of the rubber strips can seal these gaps.

[0066] Furthermore, in this embodiment, it can also be considered that the installation method of the door frame abandons the traditional shielding door gluing connection method and adopts an embedded installation method, which has a stable structure and plays a good sound insulation role.

[0067] Furthermore, in the present embodiment, it can also be considered that the motor and the circuit system in the door mechanism structure use high temperature resistant motors, and the cables use high temperature resistant cables.

[0068] Furthermore, in this embodiment, it can also be considered that the material of the fireproof composite component 3 can be selected from finished materials and prefabricated in the factory, and the fireproof composite component 3 is fixed to the concrete side plate 1 by bolts, and the remaining door body gaps are sealed by fire-resistant felt 4.

[0069] Furthermore, it can also be considered in this embodiment that the fireproof composite component 3 is used to block the assembly gap between the concrete side plate 1 and the shield door sliding door 606, and the fireproof composite component 3 is fixed to the concrete side plate 1 by bolts. The fireproof composite component 3 is fixed to the concrete side plate 1 by self-tapping screws 301 in a bidirectional staggered manner. The fireproof composite component 3 is a combination of a rock wool board and a fireproof porter board 302. The rock wool board adopts 50mm thick rock wool (50X50X0.6 light steel keel structure) and the fireproof porter board adopts 9mm thickness. The fireproof porter board and the light steel keel of the rock wool board are fixed by screws.

[0070] Furthermore, in this embodiment, it can also be considered that the fireproof treatment component 3 can be fixed by combining a rock wool board and a fireproof porter board to block the gap between the door machine and the main structure, thereby isolating the heat conducted by smoke when a fire occurs.

[0071] Furthermore, in this embodiment, it can also be considered that the assembly gap between the fireproof combination component 3 and the shielding door sliding door 606 is sealed by a fire-resistant cloth felt 4, and the assembly gap between the steel structure frame 2 and the shielding door sliding door 606 is sealed by a fire-resistant cloth felt 4.

[0072] Furthermore, in this embodiment, it can be considered that the material of the fire-resistant cloth felt 3 can be selected from finished inorganic cloth-wrapped aluminum silicate felt materials, which are prefabricated and processed in the factory, and fixed by a support plate and screws. Specifically: the sliding gap between the shielding door sliding door 606 and the fireproof composite component 3 is made of inorganic cloth-wrapped aluminum silicate felt, and the inorganic cloth has a 2cm edge, which can limit the adverse effects of smoke and heat on the upper door structure when a fire occurs to the greatest extent.

[0073] Furthermore, in the present embodiment, it can also be considered that the fire-resistant cloth felt 4 is a combination of inorganic cloth and aluminum silicate felt. Preferably, the fire-resistant cloth felt 4 can be fixed by wrapping and sewing inorganic cloth and aluminum silicate felt to block smoke and heat in the gap above the sliding door of the shielding door when a fire occurs.

[0074] Furthermore, in this embodiment, it can also be considered that one end of the fire-resistant felt 4 is fixed to the fire-resistant composite component 3 or the steel structure frame 2 by means of a support plate and screws, and the other end of the fire-resistant felt 4 is close to the shielding door sliding door 606.

[0075] Furthermore, in the present embodiment, it can also be considered that the end of the fire-resistant felt 4 close to the shielding door sliding door 606 is higher than the end close to the fireproof combination component 3 or the steel structure frame 2. Under the premise of not affecting the sliding of the shielding door sliding door, it can prevent the smoke and heat from entering the fire door top box through the gap above the shielding door sliding door when a fire occurs.

[0076] This embodiment solves the fire performance requirements that are not considered in ordinary platform shielding door top boxes and upper supporting structures. It is suitable for all types of current railway passenger stations. It has a simple and generous appearance; it is safe, stable, airtight, heat-insulating, fire-proof, smoke-proof, and highly technological in terms of performance; it effectively solves the special requirements of the current railway passenger station platform shielding door top box in terms of building fire protection; it has the advantages of simple and fast construction and high degree of integration in terms of implementation; it has the characteristics of convenient installation and high degree of modular production in terms of implementation, and it plays a very important role in promoting the development of platform shielding door technology. It guarantees the life and property safety of passengers and staff in the station to the greatest extent, and has very good innovation and use value. Example

[0077] A method for using a fireproof shielding door mechanism structure, the steps of which are:

[0078] Fireproof shield door opening stage:

[0079] S1: When a fire occurs, the fire linkage system of the shielding door and the door machine is turned on, the alarm system sends out an alarm message, and then the shielding door body and door machine structure enter the emergency state;

[0080] Specifically: when a fire occurs and people need to escape through the platform in the train, the screen door alarm system will send out an alarm message, and then the train will enter the station and stop. After the train stops, the screen door will open and evacuate the passengers in the car to a safe area. All personnel will be evacuated within 6 minutes, and the screen door can be opened and closed within 10 minutes. After the screen door is closed, the station staff or firefighters can manually control the door opening and closing. Within 10 minutes from the fire, the fireproof screen door body and door mechanism can work normally to ensure the safety of personnel evacuation.

[0081] (II) Fireproof shielding door closing stage:

[0082] S2: Within 10 minutes after the evacuation of personnel, the shielding door is closed and the door structure (including load-bearing structure, sliding door, fixed door, glass) should remain intact and not collapse within 1 hour to buy time for controlling the spread of fire and rescue.

[0083] After the evacuation is completed, firefighters can break the glass of the shielding door according to the specific situation of the fire and the instructions on the door body to put out the fire.

[0084] The above embodiments describe the present invention in detail, but the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of application of the present invention shall still fall within the scope of the patent coverage of the present invention.

Claims

1. A fireproof shield door mechanism structure, characterized by: The invention comprises a screen door (6) and a concrete side plate (1) as an upper supporting structure, a steel structure frame (2) and a fire door top box (5) being fixed to the concrete side plate (1), and an assembly gap between the concrete side plate (1), the screen door (6) and the steel structure frame (2) being sealed by a fireproof structure, and the fireproof structure comprising a fireproof composite component (3) and a fireproof felt (4).

2. The fireproof shield door mechanism structure according to claim 1, characterized in that: The concrete side plate (1) is a reinforced concrete plate with a thickness of 150 mm. The steel structure frame (2) is used to fix the fire door top box (5) and is fixed to the concrete side plate (1) by bolts.

3. The fireproof shield door mechanism structure according to claim 1 is characterized in that: The shielding door (6) comprises a shielding door fixed door and a shielding door sliding door (606). A driving motor and a door control unit (7) are provided in the upper part of the fire door top box (5). The driving motor drives a pulley drag plate group (9) through a transmission mechanism (8) to drive the shielding door sliding door (606) to move.

4. The fireproof shield door mechanism structure according to claim 3 is characterized in that: The glass on the door body of the fixed door of the shielding door is made of 6+12+6 thick high borosilicate fireproof hollow glass, and the glass on the door body of the sliding door (606) of the shielding door is made of 8 thick high borosilicate fireproof glass.

5. The fireproof shield door mechanism structure according to claim 3 is characterized in that: The fireproof composite component (3) is used to seal the assembly gap between the concrete side plate (1) and the shielding door sliding door (606); the fireproof composite component (3) is fixed to the concrete side plate (1) by means of bolts.

6. The fireproof shield door mechanism structure according to claim 5, characterized in that: The fireproof composite component (3) is a combination of a rock wool board and a fireproof Porter board.

7. The fireproof shield door mechanism structure according to claim 5, characterized in that: The assembly gap between the fireproof composite component (3) and the shielding door sliding door (606) is sealed by a fire-resistant cloth felt (4), and the assembly gap between the steel structure frame (2) and the shielding door sliding door (606) is sealed by a fire-resistant cloth felt (4).

8. The fireproof shielding door mechanism structure according to claim 7, characterized in that: One end of the fire-resistant felt (4) is fixed to the fire-resistant composite component (3) / steel structure frame (2) via a support plate and screws, and the other end of the fire-resistant felt (4) is in close contact with the shielding door sliding door (606).

9. The fireproof shield door mechanism structure according to claim 8, characterized in that: The end of the fire-resistant felt (4) close to the shielding door sliding door (606) is higher than the end close to the fire-resistant composite component (3) / steel structure frame (2).

10. The fireproof shield door mechanism structure according to claim 7, characterized in that: The refractory cloth felt (4) is a combination of inorganic cloth and aluminum silicate felt.

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