Exterior wall fire simulation system and method under external inclination angle of building

Abstract

The invention belongs to the technical field of fire safety, and discloses an outer wall fire simulation system and method under the external inclination angle of a building, the system comprises a base, a house model is arranged on the base, and an experiment mechanism for simulating a wall is arranged in the house model; the experiment 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 fixedly connected with the vertical wall assembly, and a top sealing assembly is arranged between the top end of the vertical wall assembly and the top end of the inclined wall assembly; the inclined wall assembly comprises extension plates, an inclined plate is rotationally connected between the bottom ends of the two extension plates through a driving assembly, and the top end of the inclined plate is rotationally connected with the top sealing assembly. The device is simple in structure and convenient to use, fire simulation on walls with different inclination angles can be achieved, data support is provided for fire research in a building with an inclined wall, fire protection and rescue in the building are facilitated, and the personal safety of people in the building is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of fire safety, and particularly relates to an exterior wall fire simulation system and method for a building with an inclined angle on the outside of the building. Background Technique

[0002] An exterior wall fire of an urban building is a phenomenon where, during an indoor fire, the flame flows out of the window along with the smoke and burns outside. The overflowing flame has a very high temperature outside and is extremely likely to cause a secondary fire, spreading 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 exterior wall fire events of buildings, which forms a technical bottleneck for scientific decision-making and emergency management.

[0003] However, current fire safety research and achievements still mainly focus on the indoor environment. There is relatively little research on the spread of exterior wall fires of large urban buildings, especially insufficient understanding of the fire spread characteristics of the increasingly inclined exterior walls, and it is unable to provide assistance for the fire rescue of exterior walls with inclined angles.

[0004] Therefore, this application designs an exterior wall fire simulation system and method for a building with an inclined angle on the outside of the building to solve the above technical problems. Summary of the Invention

[0005] To solve the above technical problems, the present invention proposes an exterior wall fire simulation system and method for a building with an inclined angle on the outside of the building, which is mainly used to study the fire situation in a building with an inclined wall surface and provide data support for fire safety.

[0006] To achieve the above object, the present invention provides an exterior wall fire simulation system for a building with an inclined angle on the outside of the building, including a base that is convenient to move and fix. A house model simulating the house structure is arranged on the base, and an experimental mechanism simulating the wall is arranged inside the house model;

[0007] The experimental mechanism includes a fixed vertical wall assembly and an inclined wall assembly with an adjustable angle. The vertical wall assembly is fixedly connected to the top 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 tops of the vertical wall assembly and the inclined wall assembly;

[0008] The inclined wall assembly includes extension plates arranged on both sides of the end of the vertical wall assembly. An inclined plate is rotatably connected between the bottoms of the two extension plates through a driving component, and the top of the inclined plate is rotatably connected to the capping assembly.

[0009] Preferably, the driving assembly includes a driving cavity formed in any one of the extension plates, and a driving motor is installed in the driving cavity; the driving cavity communicates with a transmission cavity, and 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 to the side wall of the inclined plate.

[0010] Preferably, a driving gear and a driven gear that are meshed and transmitted 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 formed in the side wall of the extension plate, a limiting block is slidably connected in the limiting groove, and the limiting block extends out of the limiting groove and is fixedly connected to the side wall of the inclined plate.

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

[0013] Preferably, the capping assembly includes a top plate corresponding to the top end of the vertical wall assembly, a connecting cylinder fixedly connected to the bottom end of the top plate and longitudinally slidably connected to the top end of the vertical wall assembly; a telescopic member is arranged on the side wall of the top plate, and the telescopic member is hinged to the top end of the inclined plate.

[0014] Preferably, the telescopic member includes a telescopic groove formed 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 hinged to the bottom end of the end of the telescopic plate.

[0015] Preferably, a relief groove is formed at one end of the telescopic plate located in the telescopic groove, a telescopic spring is arranged in the relief groove, and the telescopic spring extends out of the relief groove and is fixedly connected to the bottom end of the telescopic groove.

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

[0017] The present invention also discloses a simulation method of an external wall fire simulation system based on the inclination angle of a building exterior, including the following steps:

[0018] Move the device to the experimental site through the base and then fix it;

[0019] Start the test mechanism to simulate the generation of an indoor fire and record the fire data;

[0020] Start the drive assembly to drive the tilting plate of the tilting wall assembly to deflect, so that the tilting plate deflects between the two extension plates, simulating wall structures at different angles, and observing the development state of the fire;

[0021] Record the deflection angle of the tilting plate and the fire data;

[0022] Establish a relationship graph between the deflection angle of the tilting plate and the fire data, and study the spread characteristics at different wall angles.

[0023] Compared with the prior art, the present invention has the following advantages and technical effects: The present invention discloses an external wall fire simulation system for the inclination angle of a building. The base can drive the whole device to move and fix, which is convenient for storage and transfer; the house model is scaled down proportionally to simulate the house structure, which is convenient for simulating the occurrence of a fire; the vertical wall assembly and the tilting wall assembly at the top of the simulated house are respectively used to simulate the vertical wall surface and the tilting wall surface of the house, and the capping assembly is used to simulate the roof. The tilting plate of the tilting wall assembly adjusts the angle between the two extension plates, and can simulate tilting wall surfaces with different inclinations, simulate houses with different inclination angles, and then study the fire conditions on walls with different inclination angles; the free end of the tilting plate is hinged to the capping assembly, and at the same time, the capping assembly is movably arranged with the vertical wall assembly, so that when the angle of the tilting plate is adjusted, the capping assembly can perform follow-up adjustment to maintain the tight connection between the vertical wall assembly, the tilting wall assembly and the capping assembly, avoid structural jamming caused by affecting the angle deflection of the tilting plate, and prevent heat loss of the simulated fire during angle adjustment, improving the data authenticity.

[0024] The structure of the present invention is simple and easy to use. It can realize the simulation of fires on walls with different inclination angles, provide data support for the fire research in buildings with inclined wall surfaces, facilitate the fire protection and rescue in buildings, and improve the personal safety of the people in the buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0026] Figure 1 is the axonometric view of the external wall fire simulation system for the inclination angle of the building of the present invention;

[0027] Figure 2 is the front view structural diagram of the top plate assembly of the present invention;

[0028] Figure 3 is the structural schematic diagram of the simulated house of the present invention;

[0029] Figure 4 is the present inventionFigure 3 Partial enlarged view of A;

[0030] Figure 5 Front view of the extension plate of the present invention;

[0031] Figure 6 Of the present invention Figure 5 Partial enlarged view of B;

[0032] Figure 7 Schematic structural diagram of the guide groove of the present invention;

[0033] Figure 8 Schematic structural diagram of the drive assembly of the present invention;

[0034] Figure 9 Schematic structural diagram of the support feet of the present invention;

[0035] In the figure: 1, base; 2, house model; 3, vertical wall assembly; 4, inclined wall assembly; 5, capping assembly; 6, extension plate; 7, inclined plate; 8, drive cavity; 9, drive motor; 10, transmission cavity; 11, drive shaft; 12, driving gear; 13, driven gear; 14, limit groove; 15, limit 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, relief groove; 25, telescopic spring; 26, connecting groove; 27, follow-up spring; 28, burner; 29, thermocouple array; 30, heat flow meter; 31, camera; 32, support feet; 33, walking 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 manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0038] Referring to Figures 1-9 As shown, this embodiment provides an external wall fire simulation system for the inclined angle of a building, including a base 1 that is convenient for movement and fixation. A house model 2 simulating the building structure is arranged on the base 1, and an experimental mechanism simulating the wall is arranged inside the house model 2;

[0039] The experimental mechanism includes a fixed vertical wall assembly 3 and an inclined wall assembly 4 with adjustable angle. The vertical wall assembly 3 is fixedly connected to the top of the house model 2, and the inclined wall assembly 4 is fixedly connected to the house model 2 and is fixedly connected to the open side of the vertical wall assembly 3. A capping assembly 5 is arranged between the tops of the vertical wall assembly 3 and the inclined wall assembly 4;

[0040] The inclined wall assembly 4 includes extension plates 6 arranged on both sides of the end of the vertical wall assembly 3. A tilt plate 7 is rotatably connected between the bottoms of the two extension plates 6 through a drive assembly. The top of the tilt plate 7 is rotatably connected to the capping assembly 5.

[0041] The present invention discloses an external wall fire simulation system for the inclined angle of a building. The base 1 can drive the whole device to move and be fixed, which is convenient for storage and transfer; the house model 2 is scaled down proportionally to simulate the house structure, which is convenient for simulating the occurrence of a fire; the vertical wall assembly 3 and the inclined wall assembly 4 at the top of the simulated house are respectively used to simulate the vertical wall surface and the inclined wall surface of the house, and the capping assembly 5 is used to simulate the roof. The tilt plate 7 of the inclined wall assembly 4 adjusts the angle between the two extension plates 6, and can simulate inclined wall surfaces with different inclination degrees, and simulate the inside of the simulated house with different inclination angles, and then study the fire conditions on the wall surfaces with different inclination angles; the free end of the tilt plate 7 is hinged to the capping assembly 5, and at the same time, the capping assembly 5 is movably arranged with the vertical wall assembly 3, so that when the angle of the tilt plate 7 is adjusted, the capping assembly 5 can perform follow-up adjustment to keep the tight connection between the vertical wall assembly 3, the inclined wall assembly 4 and the capping assembly 5, avoid the structure jamming caused by affecting the angle deflection of the tilt plate 7, and at the same time prevent the heat dissipation of the simulated fire during angle adjustment, and improve the data authenticity. The structure of the present invention is simple and easy to use, can realize the fire simulation on the wall surfaces with different inclination angles, provides data support for the fire research in the building with inclined wall surfaces, is convenient for the fire protection and rescue in the building, and improves the personal safety of the people in the building.

[0042] In an embodiment of the present application, a plurality of support feet 32 are arranged at the bottom end of the base 1, and traveling wheels 33 are telescopically installed in the support feet 32 through telescopic rods 34, which is convenient for the bottom plate to drive the device to move and be fixed.

[0043] In an embodiment of the present application, a plurality of cameras 31 are arranged in the simulated house of this embodiment for photographing the shape of the flame.

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

[0045] For a further optimized solution, the driving component includes a driving cavity 8 formed in any one of the extension plates 6, and a driving motor 9 is installed in the driving cavity 8; the driving cavity 8 communicates with a transmission cavity 10, and the driving motor 9 is in transmission connection with a driving shaft 11 rotatably connected in the transmission cavity 10; the driving shaft 11 extends out of the transmission cavity 10 and is fixedly connected to the side wall of the inclined plate 7; a driving gear 12 and a driven gear 13 that are meshed and transmitted are arranged in the transmission cavity 10, the driving gear 12 is in transmission connection with the output shaft of the driving motor 9, and one end of the driving shaft 11 extending into the transmission cavity 10 is in transmission connection with the driven gear 13. The driving motor 9 in the driving cavity 8 drives the driving shaft 11 to rotate through the meshed driving gear 12 and driven gear 13, and then drives the inclined plate 7 to deflect. By adjusting the angle of the inclined plate 7, houses with different inclination angles are simulated, and thus the fire conditions of building exterior walls with different inclined walls are simulated.

[0046] In an embodiment of the present application, the diameter of the driving gear 12 in this embodiment is smaller than that of the driven gear 13, and the two have a fixed transmission ratio (the design of the specific transmission ratio is a conventional technology in the art), so that the driving gear 12 rotates several circles to drive the driven gear 13 to rotate one circle, 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 arranged on the driving shaft 11 for supporting and fixing the driving shaft 11.

[0048] For a further optimized solution, a limiting groove 14 is formed in the side wall of the extension plate 6, 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 to the side wall of the inclined plate 7. The arrangement of the limiting groove 14 and the limiting block 15 stabilizes and limits the bottom end of the inclined plate 7. While improving the stability of the inclined plate 7, it can also limit the inclined plate 7 to prevent equipment damage caused by excessive deflection.

[0049] For a further optimized solution, a guiding groove 16 adapted to the trajectory of the free end of the inclined plate 7 is formed in the inner wall of the extension plate 6, a movable wheel 17 is movably connected in the guiding groove 16, a guiding shaft 18 is arranged inside the inner ring of the movable wheel 17, and the guiding shaft 18 extends out of the movable wheel 17 and is fixedly connected to the free end of the inclined plate 7. The free end of the inclined plate 7 moves along an arc trajectory under the drive of the driving motor 9. The guiding shaft 18 extends into the movable wheel 17 and drives the movable wheel 17 to move in the guiding groove 16, which can keep the deflection of the inclined plate 7 stable while reducing the friction of the deflection, making the adjustment smoother.

[0050] Further optimized solution, the capping component 5 includes a top plate 19 corresponding to the top end of the vertical wall component 3. A connecting cylinder 20 is fixedly connected to the bottom end of the top plate 19 and longitudinally slidably connected to the top end of the vertical wall component 3. A telescopic member is provided on the side wall of the top plate 19, and the telescopic member is hinged to the top end of the inclined plate 7. The top plate 19 of the capping component 5 is used to simulate the roof structure, and a thermocouple tree 41 for measuring the flame temperature is installed thereon to measure the temperature distribution above the flame. The setting of the connecting cylinder 20 enables the top plate 19 to be lifted and lowered, so that when the angle of the inclined plate 7 is adjusted, it can also ensure that the top plate 19 is tightly connected to the top plate 19 through the telescopic member.

[0051] Further optimized solution, the telescopic member includes a telescopic groove 21 opened 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. The free end of the inclined plate 7 is hinged to the bottom end of the end of the telescopic plate 22. A relief groove 24 is provided at one end of the telescopic plate 22 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. The telescopic plate 22 slides in the telescopic groove 21. Combining the common action of the telescopic spring 25 in the relief groove 24 and the free end of the inclined plate 7, when the inclined plate 7 deflects, the telescopic plate 22 undergoes telescopic deflection driven by the connecting plate 23, ensuring that when the inclined plate 7 deflects, it will not get stuck.

[0052] In an embodiment of the present application, both ends of the telescopic plate 22 slide with the inner wall of the extension plate 6, thereby ensuring that the telescopic plate 22 remains in a sealed state with the extension plate 6 during telescoping to prevent leakage of the device.

[0053] In an embodiment of the present application, a stabilizing block 39 is provided on the telescopic plate 22. The stabilizing block 39 is slidably connected in a stabilizing groove 38 in the telescopic groove 21 to improve the stability of the telescopic plate 22.

[0054] Further optimized solution, a connection groove 26 slidably connected to the connecting cylinder 20 is opened at the top end of the vertical wall component 3. A follow-up spring 27 is fixedly connected between the bottom end of the connection groove 26 and the bottom end of the connecting cylinder 20. The connecting cylinder 20 is slidably connected in the connection groove 26, and the follow-up spring 27 ensures the smoothness of the position adjustment of the connecting cylinder 20.

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

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

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

[0058] The present invention also discloses a simulation method of an exterior wall fire simulation system based on the inclination angle of a building exterior, including the following steps:

[0059] Move the device to the experimental site through the base 1 and then fix it; start the telescopic rod 34 to extend, so that the traveling wheels 33 extend out of the bottom end of the support feet 32, make the bottom end of the support feet 32 leave the ground, and then push the device through the traveling wheels 33 to move the base 1 and the simulation mechanism on the base 1 to a position convenient for experiments;

[0060] Start the test mechanism to simulate the occurrence of an indoor fire and record the fire data; start the burner 28 in the house model 2 to simulate the occurrence of an indoor fire, and then collect the data of the occurrence and spread of the fire through the camera 31 arranged in the house model 2;

[0061] Start the driving component to drive the inclined plate 7 of the inclined wall component 4 to deflect, so that the inclined plate 7 deflects between the two extension plates 6 to simulate wall structures at different angles, and observe the development state of the fire; start the driving motor 9 in the driving cavity 8, drive the inclined plate 7 to deflect a certain angle with the driving shaft 11 as the rotation axis through the driving shaft 11, so that the limiting block 15 at the top end of the inclined plate 7 slides in the limiting groove 14 to simulate an outwardly inclined wall; then start the burner 28 again to simulate a fire under the condition of a wall inclination, 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 the fire data; collect the data of the occurrence and spread of the fire through the camera 31, and record the inclination angle of the inclined plate 7 simulating the inclined wall and the fire spread data;

[0063] Establish a relationship graph between the deflection angle of the inclined plate 7 and the fire data to study the spread characteristics at different wall angles; establish a data relationship between the change of the wall angle and the change of the fire spread data, such as a line graph, a curve graph or a relationship graph of its characteristics, to provide data support for studying the fire spread in a building with an outwardly inclined wall and provide data support for fire treatment.

[0064] In an embodiment of the present application, this embodiment can be combined with artificial intelligence implementation, which can greatly improve the accuracy, safety and data analysis efficiency of fire simulation experiments.

[0065] To achieve intelligent applications, the following changes can be made:

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

[0067] Video monitoring and image recognition: Install high-definition cameras to monitor the entire experimental process in all directions; use artificial intelligence image recognition technology to automatically detect and analyze fire characteristics such as flames and smoke, improving the accuracy and speed of fire recognition.

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

[0069] Data analysis and prediction: Use machine learning algorithms to deeply analyze the data collected by sensors, revealing the laws and trends of fire development; based on historical data, train prediction models to predict the possible development and impact scope of fires in advance, providing decision-making support for experimental personnel.

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

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

[0072] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0073] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A fire simulation system for an exterior wall at an inclined angle outside a building, characterized in that: The invention comprises a base (1) which is easy to move and fix, a house model (2) simulating a house structure is arranged on the base (1), and an experimental mechanism simulating a wall is arranged inside the house model (2); The experimental mechanism comprises a fixed vertical wall component (3) and an angle-adjustable inclined wall component (4), wherein the vertical wall component (3) is fixedly connected to the top of the house model (2), the inclined wall component (4) is fixedly connected to the house model (2) and to the opening side of the vertical wall component (3), and a capping component (5) is arranged between the tops of the vertical wall component (3) and the inclined wall component (4); The inclined wall assembly (4) comprises extension plates (6) arranged on both sides of the end of the vertical wall assembly (3); an inclined plate (7) is rotatably connected between the bottom ends of the two extension plates (6) via a driving assembly; and the top end of the inclined plate (7) is rotatably connected to the capping assembly (5).

2. The exterior wall fire simulation system at an inclined angle on the outside of a building according to claim 1 is characterized by: The driving assembly comprises a driving cavity (8) provided on any one of the extension plates (6), wherein a driving motor (9) is installed in the driving cavity (8); the driving cavity (8) is connected to a transmission cavity (10), and the driving motor (9) is in driving connection with a driving shaft (11) rotatably connected in the transmission cavity (10); the driving shaft (11) extends out of the transmission cavity (10) and is fixedly connected to a side wall of the inclined plate (7).

3. The exterior wall fire simulation system at an inclined angle on the outside of a building according to claim 2 is characterized by: A driving gear (12) and a driven gear (13) are arranged in the transmission cavity (10) for meshing transmission. The driving gear (12) is transmission-connected to the output shaft of the driving motor (9), and one end of the driving shaft (11) extending into the transmission cavity (10) is transmission-connected to the driven gear (13).

4. The exterior wall fire simulation system at an inclined angle on the outside of a building according to claim 1 is characterized by: The side wall of the extension plate (6) is provided with a limiting groove (14), 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 to the side wall of the inclined plate (7).

5. The exterior wall fire simulation system at an inclined angle on the outside of a building according to claim 1 is characterized by: The inner wall of the extension plate (6) is provided with a guide groove (16) adapted to 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 exterior wall fire simulation system at an inclined angle on the outside of a building according to claim 1 is characterized by: The capping assembly (5) comprises a top plate (19) arranged corresponding to the top end of the vertical wall assembly (3); the bottom end of the top plate (19) is fixedly connected to a connecting tube (20) longitudinally slidably connected to the top end of the vertical wall assembly (3); the side wall of the top plate (19) is provided with a telescopic member which is telescopically arranged, and the telescopic member is hinged to the top end of the inclined plate (7).

7. The exterior wall fire simulation system at an inclined angle on the outside of a building according to claim 6, characterized in that: The telescopic member comprises a telescopic groove (21) provided on the side wall of the top plate (19), a telescopic plate (22) being slidably connected in the telescopic groove (21), the telescopic plate (22) extending out of the telescopic groove (21) and being slidably connected between the two extension plates (6), and a free end of the inclined plate (7) being hinged to the bottom end of the telescopic plate (22).

8. The exterior wall fire simulation system at an inclined angle on the outside of a building according to claim 7, characterized in that: A clearance groove (24) is provided at one end of the telescopic plate (22) located in the telescopic groove (21), 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 to the bottom end of the telescopic groove (21).

9. The exterior wall fire simulation system at an inclined angle on the outside of a building according to claim 6, characterized in that: A connecting groove (26) slidably connected to the connecting tube (20) is provided at the top of the vertical wall assembly (3), and a follower spring (27) is fixedly connected between the bottom end of the connecting groove (26) and the bottom end of the connecting tube (20).

10. A method for simulating an exterior wall fire at an inclined angle on the outside of a building, based on the exterior wall fire simulation system at an inclined angle on the outside of a building according to any one of claims 1 to 9, characterized in that The following steps are involved: The device is moved to the experimental site via the base (1) and then fixed; Start the test facility, simulate the occurrence of indoor fire, and record the fire data; The driving assembly is started to drive the inclined plate (7) of the inclined wall assembly (4) to deflect, so that the inclined plate (7) deflects between the two extension plates (6), simulating wall structures at different angles, and observing the development of the fire; Recording the deflection angle of the tilting plate (7) and fire data; A relationship map between the deflection angle of the inclined plate (7) and fire data is established to study the spread characteristics under different wall angles.

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