A building outer facade fire simulation system and method under an inclined angle of an outer facade

Abstract

The application belongs to the technical field of fire safety, and discloses a building outer surface fire simulation system and method with an inclined angle, which comprises a base, a house model arranged on the base, and an experimental mechanism for simulating a wall arranged in the house model; the experimental mechanism comprises a vertical wall assembly and an inclined wall assembly, the vertical wall assembly is fixedly connected to the top end of the house model, the inclined wall assembly is fixedly connected to the house model and is fixedly connected with the vertical wall assembly, and a capping assembly is arranged between the top ends of the vertical wall assembly and the inclined wall assembly; the inclined wall assembly comprises extension plates, and a tilt plate is rotatably connected between the bottom ends of the two extension plates through a driving assembly, and the top end of the tilt plate is rotatably connected with the capping assembly. The application has a simple structure and is convenient to use, can realize fire simulation on the wall surface with different inclined angles, provides data support for the fire research in the building with the inclined wall surface, is convenient for fire protection and rescue in the building, and improves the personal safety of the personnel in the building.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fire safety, and particularly relates to a building outer wall fire simulation system and method under an inclined angle of an outer wall. BACKGROUND

[0002] Urban building outer wall fire is a phenomenon that when indoor fire, flames flow out of the window along with smoke and burn outside. The overflow flames have very high temperature and are easy to cause secondary fire, which spreads the fire to adjacent rooms and surrounding buildings. At the fire scene, fire fighting and emergency dispatch management personnel currently lack effective tools to predict and estimate the intensity and development trend of such large-scale building outer wall fire events, which forms a technical bottleneck for scientific decision-making and emergency management.

[0003] However, current fire safety research and achievements still mainly focus on indoor fire, and research on urban large building outer wall fire spread is still relatively rare, especially the research on the spread characteristics of building outer wall fire with gradually increasing inclined setting is insufficient, which cannot provide help for the fire rescue of outer wall with inclined angle.

[0004] Therefore, the application designs a building outer wall fire simulation system and method under an inclined angle of an outer wall to solve the above technical problems. SUMMARY

[0005] To solve the above technical problems, the application provides a building outer wall fire simulation system and method under an inclined angle of an outer wall, which is mainly used for researching the fire condition in a building with an inclined wall and providing data support for fire safety.

[0006] To achieve the above purpose, the application provides a building outer wall fire simulation system under an inclined angle of an outer wall, which comprises a base convenient for moving and fixing, a house model simulating a house structure is arranged on the base, and an experimental mechanism simulating a wall is arranged in the house model.

[0007] The experimental mechanism comprises a fixed vertical wall assembly and an angle-adjustable inclined wall assembly, the vertical wall assembly is fixedly connected to the top end of the house model, the inclined wall assembly is fixedly connected to the house model and is fixedly connected to the opening side of the vertical wall assembly, and a capping assembly is arranged between the top ends of the vertical wall assembly and the inclined wall assembly.

[0008] The inclined wall assembly comprises two extension plates arranged on both sides of the end portion of the vertical wall assembly, a tilt plate is rotatably connected between the bottom ends of the two extension plates through a driving assembly, and the top end of the tilt plate is rotatably connected with the capping assembly.

[0009] Preferably, the driving assembly comprises a driving cavity opened on any of the extension plates, a driving motor is installed in the driving cavity; the driving cavity is communicated with a transmission cavity, the driving motor is in transmission connection with a driving shaft rotatably connected in the transmission cavity; the driving shaft extends out of the transmission cavity and is fixedly connected with the side wall of the inclined plate.

[0010] Preferably, a driving gear and a driven gear in mesh transmission are arranged in the transmission cavity, the driving gear is in transmission connection with the output shaft of the driving motor, and one end of the driving shaft extending into the transmission cavity is in transmission connection with the driven gear.

[0011] Preferably, a limiting groove is opened in the side wall of the extension plate, a limiting block is slidably connected in the limiting groove, the limiting block extends out of the limiting groove and is fixedly connected with the side wall of the inclined plate.

[0012] Preferably, a guide groove adapted to the track of the free end of the inclined plate is opened in the inner wall of the extension plate, a movable wheel is movably connected in the guide groove, a guide shaft is arranged in the inner ring of the movable wheel, the guide shaft extends out of the movable wheel and is fixedly connected with the free end of the inclined plate.

[0013] Preferably, the capping assembly comprises a top plate arranged corresponding to the top end of the vertical wall assembly, the bottom end of the top plate is fixedly connected with a connecting cylinder longitudinally slidingly connected with the top end of the vertical wall assembly; the side wall of the top plate is provided with a telescopic part arranged in a telescopic mode, and the telescopic part is hingedly connected with the top end of the inclined plate.

[0014] Preferably, the telescopic part comprises a telescopic groove opened in the side wall of the top plate, a telescopic plate is slidably connected in the telescopic groove, the telescopic plate extends out of the telescopic groove and is slidably connected between the two extension plates, and the free end of the inclined plate is hingedly connected with the end bottom of the telescopic plate.

[0015] Preferably, one end of the telescopic plate located in the telescopic groove is provided with a make-way groove, a telescopic spring is arranged in the make-way groove, the telescopic spring extends out of the make-way groove and is fixedly connected with the bottom end of the telescopic groove.

[0016] Preferably, the top end of the vertical wall assembly is provided with a connecting groove slidably connected with the connecting cylinder, and a follow-up spring is fixedly connected with the bottom end of the connecting cylinder.

[0017] The application further discloses a simulation method of the external wall fire simulation system based on the inclination angle of the building outer surface.

[0018] The device is moved to the experimental site through the base, and then fixed;

[0019] The test mechanism is started, the generation of indoor fire is simulated, and the data of the fire is recorded;

[0020] The driving assembly is started to drive the deflection of the deflection plate of the inclined wall assembly, so that the deflection plate is deflected between the two extension plates, the wall structure of different angles is simulated, and the development state of the fire is observed;

[0021] The deflection angle of the deflection plate and the fire data are recorded;

[0022] The relationship map of the deflection angle of the deflection plate and the fire data is established, and the spreading characteristics under different wall angles are studied.

[0023] Compared with the prior art, the building outer inclined angle under the outer wall fire simulation system has the following advantages and technical effects: the base can drive the whole device to move and fix, facilitating storage and transfer; the house model is reduced in proportion to simulate the house structure, facilitating the simulation of the occurrence of fire; the vertical wall assembly and the inclined wall assembly at the top of the simulated house are respectively used for simulating the vertical wall surface and the inclined wall surface of the house, and the capping assembly is used for simulating the roof; the deflection plate of the inclined wall assembly is angle-adjusted between the two extension plates, different inclination of the inclined wall surface can be simulated, the houses with different inclined angles are simulated, and the fire on the wall surface with different inclined angles is studied; the free end of the deflection plate is hinged with the capping assembly, and the capping assembly is movably arranged with the vertical wall assembly, so that when the angle of the deflection plate is adjusted, the capping assembly can be adjusted synchronously, the close connection among the vertical wall assembly, the inclined wall assembly and the capping assembly is maintained, the structure is prevented from being stuck due to the deflection of the angle of the deflection plate, and the heat loss of the simulated fire caused by the angle adjustment is prevented, and the data authenticity is improved.

[0024] The building outer inclined angle under the outer wall fire simulation system has the advantages of simple structure, convenient use, and can simulate the fire on the wall surface with different inclined angles, provide data support for the fire research in the building with inclined wall surface, facilitate the fire protection and rescue in the building, and improve the personal safety of the personnel in the building. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings are presented to explain the present application and should not be considered as imposing unnecessary limitations on the present application. In the drawings:

[0026] Figure 1 It is an axial view of the building outer inclined angle under the outer wall fire simulation system of the present application;

[0027] Figure 2 It is a main view of the top plate assembly structure of the present application;

[0028] Figure 3 It is a structure diagram of the simulated house of the present application;

[0029] Figure 4 It is a structure diagram of the simulated house of the present application;Figure 3 A magnified view of part A in the image;

[0030] Figure 5 This is a front view of the extension plate of the present invention;

[0031] Figure 6 For the present invention Figure 5 A magnified view of part B in the image;

[0032] Figure 7 This is a schematic diagram of the guide groove of the present invention;

[0033] Figure 8 This is a schematic diagram of the drive component structure of the present invention;

[0034] Figure 9 This is a schematic diagram of the support foot structure of the present invention;

[0035] In the diagram: 1. Base; 2. House model; 3. Vertical wall assembly; 4. Inclined wall assembly; 5. Roofing assembly; 6. Extension plate; 7. Inclined plate; 8. Drive cavity; 9. Drive motor; 10. Transmission cavity; 11. Drive shaft; 12. Drive gear; 13. Driven gear; 14. Limiting groove; 15. Limiting block; 16. Guide groove; 17. Movable wheel; 18. Guide shaft; 19. Top plate; 20. Connecting cylinder; 21. Telescopic groove 22. Telescopic plate; 23. Connecting plate; 24. Clearance groove; 25. Telescopic spring; 26. Connecting groove; 27. Follower spring; 28. Burner; 29. ​​Thermocouple array; 30. Heat flow meter; 31. Camera; 32. Support leg; 33. Wheel; 34. Telescopic rod; 35. Fixing groove; 36. Fixing plate; 37. Sealing plate; 38. Stabilizing groove; 39. Stabilizing block; 40. Support bearing; 41. Thermocouple tree. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Reference Figures 1-9 As shown, this embodiment provides a fire simulation system for exterior walls under the tilt angle of a building, including a base 1 that is easy to move and fix, a house model 2 simulating the house structure is set on the base 1, and an experimental mechanism simulating the wall is set inside the house model 2.

[0039] The experimental mechanism comprises a fixed vertical wall assembly 3 and an angle-adjustable inclined wall assembly 4, the vertical wall assembly 3 is fixedly connected to the top end of the house model 2, the inclined wall assembly 4 is fixedly connected to the house model 2 and is fixedly connected to the opening side of the vertical wall assembly 3, and a capping assembly 5 is arranged between the top ends of the vertical wall assembly 3 and the inclined wall assembly 4.

[0040] The inclined wall assembly 4 comprises two extension plates 6 arranged at the two sides of the end of the vertical wall assembly 3, and an inclined plate 7 is rotatably connected between the bottom ends of the two extension plates 6 through a driving assembly, and the top end of the inclined plate 7 is rotatably connected with the capping assembly 5.

[0041] The application discloses a building outer surface inclined angle fire simulation system, the base 1 can drive the whole device to move and fix, which is convenient for storage and transfer; the house model 2 is reduced in proportion to simulate the house structure, which is convenient for simulating the occurrence of fire; the vertical wall assembly 3 and the inclined wall assembly 4 at the top end of the simulation house are respectively used for simulating the vertical wall surface and the inclined wall surface of the house, and the capping assembly 5 is used for simulating the roof; the angle of the inclined plate 7 of the inclined wall assembly 4 is adjusted between the two extension plates 6, the inclined wall surface with different inclinations can be simulated, the simulation in the simulation house with different inclined angles is further carried out, and the fire situation on the wall surface with different inclined angles is researched; the free end of the inclined plate 7 is hinged with the capping assembly 5, and the capping assembly 5 is movably arranged with the vertical wall assembly 3, so that when the angle of the inclined plate 7 is adjusted, the capping assembly 5 can be adjusted synchronously, the close connection among the vertical wall assembly 3, the inclined wall assembly 4 and the capping assembly 5 is maintained, the structure is prevented from being stuck due to the angle deflection of the inclined plate 7, the heat loss of the simulated fire caused by the angle adjustment is prevented, and the data authenticity is improved. The application has the advantages of simple structure, convenient use, simulation of the fire on the wall surface with different inclined angles, data support for the fire research in the building with the inclined wall surface, convenience for the fire protection and rescue in the building, and improvement of the personal safety of the personnel in the building.

[0042] In an embodiment of the application, the bottom end of the base 1 is provided with a plurality of supporting feet 32, and a walking wheel 33 is telescopically arranged in each supporting foot 32 through a telescopic rod 34, so as to conveniently move and fix the device by the bottom plate.

[0043] In an embodiment of the application, a plurality of shooting cameras 31 are arranged in the simulation house of the embodiment, which are used for shooting the shape of the flame.

[0044] In an embodiment of the application, a thermocouple array 29 for measuring temperature and a heat flow meter 30 for measuring heat flow distribution are arranged in the inclined plate 7.

[0045] Further optimization scheme, drive assembly includes drive cavity 8 opened in any extension plate 6, drive cavity 8 is installed with drive motor 9; Drive cavity 8 is communicated with transmission cavity 10, drive motor 9 is in transmission connection with drive shaft 11 rotatingly connected in transmission cavity 10; Drive shaft 11 extends out of transmission cavity 10 and is fixedly connected with the side wall of inclined plate 7; Transmission cavity 10 is provided with drivingly engaged driving gear 12 and driven gear 13, driving gear 12 is in transmission connection with the output shaft of drive motor 9, and one end of drive shaft 11 extending into transmission cavity 10 is in transmission connection with driven gear 13. Drive motor 9 in drive cavity 8 drives drive shaft 11 to rotate through drivingly engaged driving gear 12 and driven gear 13, and then drives inclined plate 7 to deflect, and the angle of inclined plate 7 is adjusted to simulate different inclined angle houses, and then the fire condition of building outer wall with different inclined wall surface is simulated.

[0046] In an embodiment of the present application, the diameter of the driving gear 12 of the embodiment is smaller than the driven gear 13, and the two have a fixed transmission ratio (the specific transmission ratio is a conventional technique in the art), so that the driving gear 12 rotates several turns to drive the driven gear 13 to rotate one turn, which is more convenient to control the deflection angle of the inclined plate 7.

[0047] In an embodiment of the present application, a support bearing 40 is provided on the drive shaft 11 to support and fix the drive shaft 11.

[0048] Further optimization scheme, the side wall of the extension plate 6 is provided with a limiting groove 14, and a limiting block 15 is slidably connected in the limiting groove 14, and the limiting block 15 extends out of the limiting groove 14 and is fixedly connected with the side wall of the inclined plate 7. The limiting groove 14 and the limiting block 15 are arranged to stabilize and limit the bottom end of the inclined plate 7, which improves the stability of the inclined plate 7 and also limits the inclined plate 7 to prevent damage caused by excessive deflection.

[0049] Further optimization scheme, the inner wall of the extension plate 6 is provided with a guide groove 16 matched with the trajectory of the free end of the inclined plate 7, and a movable wheel 17 is movably connected in the guide groove 16, and a guide shaft 18 is arranged in the inner ring of the movable wheel 17, and the guide shaft 18 extends out of the movable wheel 17 and is fixedly connected with the free end of the inclined plate 7. The free end of the inclined plate 7 moves along the arc trajectory under the drive of the drive motor 9, the guide shaft 18 extends into the movable wheel 17, and the movable wheel 17 is driven to move in the guide groove 16, which not only stabilizes the deflection of the inclined plate 7 but also reduces the friction of the deflection, making the adjustment more smooth.

[0050] Further optimization scheme, the capping assembly 5 includes the top plate 19 arranged at the top end of the vertical wall assembly 3, and the bottom end of the top plate 19 is fixedly connected with the connecting barrel 20 longitudinally slidingly connected at the top end of the vertical wall assembly 3; the side wall of the top plate 19 is provided with a telescopic part arranged in an extendable manner, and the telescopic part is hingedly connected with the top end of the inclined plate 7. The top plate 19 of the capping assembly 5 is applied to a simulated roof structure, and a thermocouple tree 41 for measuring the temperature of the flame is mounted thereon to measure the temperature distribution above the flame; the connecting barrel 20 is arranged to enable the top plate 19 to be lifted and lowered, so that the angle of the inclined plate 7 can be adjusted while ensuring that the top plate 19 is tightly connected to the top plate 19 through the telescopic part.

[0051] Further optimization scheme, the telescopic part includes a telescopic groove 21 opened in the side wall of the top plate 19, and a telescopic plate 22 is slidingly connected in the telescopic groove 21; the telescopic plate 22 extends out of the telescopic groove 21 and is slidingly connected between the two extension plates 6, and the free end of the inclined plate 7 is hingedly connected to the end bottom of the telescopic plate 22; one end of the telescopic plate 22 located in the telescopic groove 21 is provided with a clearance groove 24, and a telescopic spring 25 is arranged in the clearance groove 24; the telescopic spring 25 extends out of the clearance groove 24 and is fixedly connected with the bottom end of the telescopic groove 21. The telescopic plate 22 slides in the telescopic groove 21, and the combined action of the telescopic spring 25 in the clearance groove 24 and the free end of the inclined plate 7 enables the telescopic plate 22 to be deflected in extension under the driving of the connecting plate 23 when the inclined plate 7 is deflected, thereby preventing the inclined plate 7 from being stuck when deflected.

[0052] In an embodiment of the present application, the two ends of the telescopic plate 22 slide with the inner walls of the extension plates 6, thereby ensuring that the telescopic plate 22 is still in a sealed state with the extension plates 6 when it is extended or retracted, preventing leakage of the device.

[0053] In an embodiment of the present application, a stabilizing block 39 is arranged on the telescopic plate 22 and slidingly connected in a stabilizing groove 38 in the telescopic groove 21, thereby improving the stability of the telescopic plate 22.

[0054] Further optimization scheme, the top end of the vertical wall assembly 3 is provided with a connecting groove 26 slidingly connected with the connecting barrel 20, and a follow-up spring 27 is fixedly connected between the bottom end of the connecting groove 26 and the bottom end of the connecting barrel 20. The connecting barrel 20 is slidingly connected in the connecting groove 26, and the follow-up spring 27 ensures the smoothness of the position adjustment of the connecting barrel 20.

[0055] In an embodiment of the present application, a burner 28 for simulating a fire is arranged in the house model 2, and a monitoring assembly for monitoring the fire is arranged on the inclined plate 7; the burner 28 is used to simulate the generation and change of the fire, and a mass flow meter or a balance is used to control or measure the power of the burner 28.

[0056] In one embodiment of this application, a fixing plate 36 is provided at the bottom of the house model 2. The fixing plate 36 is inserted into the fixing groove 35 opened on the base 1 and locked and fixed by bolts.

[0057] In one embodiment of this application, a sealing plate 37 is provided between the fixing plate 36 and the fixing groove 35, thereby realizing the fixing between the house model 2 and the base 1.

[0058] This invention also discloses a simulation method for an exterior wall fire simulation system based on the building's external tilt angle, comprising the following steps:

[0059] Move the device to the experimental location using the base 1 and then fix it in place; activate the telescopic rod 34 to extend it, so that the walking wheel 33 extends out of the bottom end of the support foot 32, so that the bottom end of the support foot 32 is lifted off the ground, and then push the device using the walking wheel 33 to move the base 1 and the simulation mechanism on the base 1 to a convenient position for conducting the experiment.

[0060] The test mechanism is activated to simulate the occurrence of an indoor fire and record the fire data; the burner 28 in the house model 2 is activated to simulate the occurrence of an indoor fire, and then the occurrence and spread data of the fire are collected by the camera 31 set in the house model 2.

[0061] The drive assembly is activated, causing the tilting plate 7 of the tilting wall assembly 4 to deflect between the two extension plates 6, simulating wall structures at different angles and observing the development of the fire. The drive motor 9 in the drive chamber 8 is activated, which drives the tilting plate 7 to deflect at a certain angle around the drive shaft 11, causing the limiting block 15 at the top of the tilting plate 7 to slide in the limiting groove 14, simulating an outward tilting wall. Then the burner 28 is activated again to simulate a fire under the condition of a tilted wall and observe the occurrence and spread of the fire in the house model 2.

[0062] Record the deflection angle of the inclined plate 7 and fire data; collect fire occurrence and spread data through the camera 31, and record the tilt angle of the inclined plate 7 simulating the inclined wall and fire spread data.

[0063] Establish a graph showing the relationship between the deflection angle of the inclined plate 7 and fire data, and study the spread characteristics under different wall angles; establish a data relationship between changes in wall angle and changes in fire spread data, such as line graphs, curve graphs, or graphs showing the relationship between their characteristics, to provide data support for studying fire spread in buildings with outwardly inclined walls, and to provide data support for fire rescue.

[0064] In one embodiment of this application, this embodiment can be implemented in conjunction with artificial intelligence, which can greatly improve the accuracy, safety and data analysis efficiency of fire simulation experiments.

[0065] To realize intelligent application, the following changes can be made:

[0066] Sensor integration: In the experimental device for simulating the external wall fire of a building, various high-precision sensors such as temperature sensors, smoke sensors, and flame detectors are integrated; these sensors can monitor key parameters in the fire process in real time and transmit data to the artificial intelligence system for analysis.

[0067] Video monitoring and image recognition: High-definition cameras are installed to monitor the experimental process comprehensively; image recognition technology of artificial intelligence is used to automatically detect and analyze fire characteristics such as flame and smoke, improving the accuracy and speed of fire identification.

[0068] The specific application of artificial intelligence can be reflected in:

[0069] Data analysis and prediction: Machine learning algorithms are used to analyze the data collected by sensors in depth, revealing the laws and trends of fire development; based on historical data, a prediction model is trained to predict the possible development and impact range of the fire in advance, providing decision support for experimenters.

[0070] Intelligent control: According to the needs of fire simulation experiments, an intelligent control system is designed to automatically adjust experimental conditions such as wind speed and oxygen concentration; through artificial intelligence algorithms, the experimental process is optimized to ensure the accuracy and repeatability of experimental results.

[0071] Safety warning and response: The artificial intelligence system can monitor potential safety hazards in the experimental process in real time, such as excessive flame spread speed and smoke concentration; once potential dangers are detected, the system can trigger an early warning mechanism immediately to notify experimenters to take emergency measures to ensure experimental safety.

[0072] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0073] The above-described embodiments are only preferred modes of the present application and do not limit the scope of the present application; without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A fire simulation system for exterior walls under a building's external tilt angle, characterized in that: It includes a base (1) that is easy to move and fix, on which a house model (2) simulating a house structure is set, and an experimental mechanism simulating a wall is set inside the house model (2); The experimental mechanism includes a fixed vertical wall assembly (3) and an angle-adjustable inclined wall assembly (4). The vertical wall assembly (3) is fixed to the top of the house model (2), and the inclined wall assembly (4) is fixed to the house model (2) and fixed to the opening side of the vertical wall assembly (3). A capping assembly (5) is provided between the tops of the vertical wall assembly (3) and the inclined wall assembly (4). The inclined wall assembly (4) includes extension plates (6) disposed on both sides of the end of the vertical wall assembly (3), and an inclined plate (7) is rotatably connected between the bottom ends of the two extension plates (6) through a drive assembly. The top end of the inclined plate (7) is rotatably connected to the capping assembly (5). The capping assembly (5) includes a top plate (19) corresponding to the top of the vertical wall assembly (3), and a connecting cylinder (20) that slides longitudinally on the top of the vertical wall assembly (3) is fixed to the bottom end of the top plate (19); the side wall of the top plate (19) is provided with a telescopic member that is telescopically connected to the top of the inclined plate (7). The telescopic component includes a telescopic groove (21) formed on the side wall of the top plate (19), a telescopic plate (22) is slidably connected in the telescopic groove (21), the telescopic plate (22) extends out of the telescopic groove (21) and is slidably connected between the two extension plates (6), and the free end of the inclined plate (7) is hinged to the bottom end of the telescopic plate (22). The telescopic plate (22) has a relief groove (24) at one end located in the telescopic groove (21). A telescopic spring (25) is provided in the relief groove (24). The telescopic spring (25) extends out of the relief groove (24) and is fixedly connected to the bottom end of the telescopic groove (21).

2. The building exterior tilt angle fire simulation system according to claim 1, characterized in that: The drive assembly includes a drive cavity (8) formed on any of the extension plates (6), and a drive motor (9) is installed in the drive cavity (8); the drive cavity (8) communicates with a transmission cavity (10), and the drive motor (9) is connected to a drive shaft (11) rotatably connected in the transmission cavity (10); the drive shaft (11) extends out of the transmission cavity (10) and is fixed to the side wall of the inclined plate (7).

3. The building exterior tilt angle fire simulation system according to claim 2, characterized in that: The transmission cavity (10) is provided with a driving gear (12) and a driven gear (13) for meshing transmission. The driving gear (12) is connected to the output shaft of the drive motor (9) for transmission. One end of the drive shaft (11) that extends into the transmission cavity (10) is connected to the driven gear (13) for transmission.

4. The building exterior tilt angle fire simulation system according to claim 1, characterized in that: The side wall of the extension plate (6) has a limiting groove (14), and a limiting block (15) is slidably connected in the limiting groove (14). The limiting block (15) extends out of the limiting groove (14) and is fixedly connected to the side wall of the inclined plate (7).

5. The building exterior tilt angle fire simulation system according to claim 1, characterized in that: The inner wall of the extension plate (6) is provided with a guide groove (16) that matches the trajectory of the free end of the inclined plate (7). A movable wheel (17) is movably connected in the guide groove (16). A guide shaft (18) is provided in the inner ring of the movable wheel (17). The guide shaft (18) extends out of the movable wheel (17) and is fixedly connected to the free end of the inclined plate (7).

6. The building exterior tilt angle fire simulation system according to claim 1, characterized in that: The top of the vertical wall assembly (3) is provided with a connecting groove (26) that is slidably connected to the connecting cylinder (20), and a follower spring (27) is fixed between the bottom end of the connecting groove (26) and the bottom end of the connecting cylinder (20).

7. A method for simulating fire on an exterior wall at an angle of inclination of a building, based on the fire simulation system for an exterior wall at an angle of inclination of a building as described in any one of claims 1-6, characterized in that... Includes the following steps: The device is moved to the experimental site using the base (1) and then fixed in place; The testing facility was activated to simulate an indoor fire and the fire data was recorded. Start the drive assembly to drive the tilt plate (7) of the tilt wall assembly (4) to deflect, so that the tilt plate (7) deflects between the two extension plates (6) to simulate the wall structure at different angles and observe the development of the fire. Record the deflection angle of the inclined plate (7) and the fire data; Establish a graph showing the relationship between the deflection angle of the inclined plate (7) and fire data, and study the spread characteristics under different wall angles.

Images