A multi-functional simulated ground system for training

Abstract

This application belongs to the field of fire training equipment technology, and provides a multi-functional simulated ground system for training, including a basic frame, connecting components, simulated road components, and water simulation components. The simulated road components include several modular road surface units, collapse simulation units, and modular base units. The modular road surface units and collapse simulation units are interchangeably assembled on the modular base units. The water simulation components include a waterproof lining laid on the inner wall of the basic frame, as well as water injection and drainage units. The modular road surface units include at least interchangeable asphalt simulation modules, concrete simulation modules, ice and snow simulation modules, mud simulation modules, and oil pollution simulation modules. The multi-functional simulated ground system of this application has multi-dimensional scene reconstruction capabilities, providing a flexible, efficient, and realistic training environment for accident rescue training, effectively solving the problems of single function and fixed scenes in traditional training facilities.

Description

Technical Field

[0001] This application belongs to the field of fire protection teaching equipment technology, specifically, it relates to a multi-functional simulated ground system for training. Background Technology

[0002] In modern road traffic systems, the complex and diverse terrains and scenarios significantly increase the difficulty and complexity of accident rescue. For example, dense traffic and narrow spaces on urban roads can easily lead to multi-vehicle collisions, while vehicle accidents involving vehicles falling into rivers require simultaneous water rescue and demolition operations. Mountain roads, due to slippery surfaces, rockfalls, and landslides, often cause vehicles to fall off slopes or become trapped in mudslides, requiring rescuers to secure vehicles with ropes and transfer injured persons in steep terrain. Accidents in different scenarios are often accompanied by unique environmental constraints.

[0003] However, the current fire and rescue training system has significant shortcomings in scenario recreation and adaptability to real-world situations. Current rescue training for simulated traffic accidents mostly involves setting up obstacles and accident vehicles directly on conventional ground, lacking dedicated training facilities to recreate different ground scenarios. Traditional training facilities, such as fire training towers, are mostly fixed structures, capable of simulating only single vertical breaching or high-altitude rescue scenarios, making it difficult to dynamically recreate different ground environments. This severely limits the realism and practicality of simulated rescue training, hindering trainees from efficiently conducting rescue operations in actual accidents involving different ground environments. Therefore, designing a ground system that can flexibly reconstruct terrain scenarios is of great significance for improving the practical capabilities of rescue teams. Summary of the Invention

[0004] To address the problems of traditional rescue training facilities having fixed structures, limited functions, and a lack of ground-based simulation facilities for accident rescue training, this application provides a multi-functional simulated ground system for training.

[0005] In one embodiment, a multifunctional simulated ground system for training includes a basic frame, connecting components, simulated road components, and simulated water components;

[0006] The basic frame is a recessed structure with accommodating cavities that is sunk from the ground.

[0007] The simulated road component includes several modular pavement units, collapse simulation units, modular base units, support parts with struts, and connecting parts; the modular pavement units and collapse simulation units are interchangeable, with one being selected and assembled on top of the modular base unit; the collapse simulation unit has several arrayed retraction mechanisms; the support parts support the bottom of the modular base unit by abutting against the inner wall of the foundation frame with struts;

[0008] The connecting part is detachably and fixedly connected to the top of the base frame through the connecting components; the vertical projection of the modular base unit completely covers the base frame, and the modular base unit is flush with the ground or erected on the ground.

[0009] The water simulation component includes a waterproof liner laid on the inner wall of the base frame, and water injection and drainage units integrated into the base frame.

[0010] The modular road surface unit includes at least interchangeable asphalt simulation modules, concrete simulation modules, ice and snow simulation modules, mud simulation modules, and oil pollution simulation modules.

[0011] By replacing the modular road surface unit and the collapse simulation unit, conventional road accident environments and collapsed road accident environments can be simulated respectively. After removing the simulated road components, the simulated accident vehicle can be directly hoisted into the foundation frame to simulate vehicle fall rescue, or water can be injected into the foundation frame using the water injection unit and then hoisted into the simulated accident vehicle to recreate the vehicle wading or vehicle falling into water scenario.

[0012] In one design, the connecting part and the connecting assembly are connected using a snap-fit ​​structure;

[0013] The connecting part consists of several positioning pins arranged at the bottom of the module base unit, and the positioning pins have locking grooves on their bodies.

[0014] The connecting component has several fixing holes corresponding to the positioning pins, and the inner wall of the fixing holes is provided with a mechanical locking tongue or a spring locking tongue.

[0015] When the positioning pin is embedded in the fixing hole, the mechanical locking tongue or the elastic locking tongue is locked in the locking groove.

[0016] In one scheme, the collapse simulation unit's contraction mechanism is a hydraulic jacking column arranged in at least a 2×2 array, and each hydraulic jacking column has a contact part made of flexible polyurethane foam at its top.

[0017] The contraction of a single hydraulic jack in a single wheel support area or a group of hydraulic jacks in a local area simulates the state of a wheel slipping due to a pothole in the road surface; the contraction of the hydraulic jacks in the entire front wheel support area or the entire rear wheel support area simulates the state of a vehicle being suspended and trapped due to a local road collapse.

[0018] The stroke of the hydraulic lifting column is 40 to 50 cm.

[0019] In one approach, modular pavement units and collapse simulation units are assembled with modular base units via electromagnetic interlocking.

[0020] In one design, the basic frame includes an outer support frame and an inner movable frame;

[0021] The outer support frame is a rigid fixed structure installed by ground subsidence; the inner movable frame is fixed along the inner wall of the outer support frame, and the inner movable frame is a telescopic composite structure that can be adjusted at least in one section in the vertical direction. Different depths can be adjusted using the inner movable frame to restore different vehicle drop depths or vehicle wading conditions as needed.

[0022] In one design, the modular base unit integrates a slope adjustment mechanism;

[0023] The slope adjustment mechanism uses a built-in lifting device to adjust the angle of the modular road surface unit or collapse simulation unit relative to the ground, thus simulating a sloped road surface.

[0024] In one design, a pop-out air cushion is installed at the bottom of the inner cavity of the basic frame, which can serve as an emergency protection measure in case of a sudden vehicle or person falling during accident simulation rescue.

[0025] In one design, the modular base unit has a partition groove along the edge of the assembly area of ​​the modular road surface unit or the collapse simulation unit for collecting leaks or blocking fire.

[0026] The beneficial effects of this application are:

[0027] The multi-functional simulated ground system provided in this application has multi-dimensional scene reconstruction capabilities. First, it can utilize the sunken internal space of the basic frame to simulate vehicle fall rescue, or inject water into the basic frame through the water simulation component to simulate vehicle wading or vehicle falling into water rescue scenarios. After completing the assembly of the simulated road component and the basic frame, by replacing different modular road surface units, it can simulate conventional asphalt and concrete road surfaces, as well as special snow, ice, mud, and oily road surfaces, accurately reproducing the road surface characteristics under different scenarios. At the same time, by replacing the collapse simulation unit, it can also recreate the scenario of vehicles being trapped due to road surface subsidence or road section collapse, providing a flexible, efficient, and realistic training environment for accident rescue training, effectively solving the problems of single function and fixed scenarios of traditional training facilities. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of a multifunctional simulated ground system for training in one embodiment of this application;

[0030] Figure 2This is a front view of a multifunctional simulated ground system for training according to an embodiment of this application;

[0031] Figure 3 This is a schematic diagram of the construction of a multifunctional simulated ground system for training in one embodiment of this application;

[0032] Figure 4 This is an assembly schematic diagram of a multifunctional simulated ground system for training in one embodiment of this application;

[0033] Labels for each item in the figure:

[0034] 1. Basic frame; 2. Connecting components; 3. Simulated road components; 31. Modular road surface unit; 32. Modular base unit; 321. Dividing groove; 33. Support part; 34. Connecting part; 4. Water simulation component. Detailed Implementation

[0035] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application. Similarly, the following examples are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] In this application, a detachable fixed connection refers to a situation where two components cannot move relative to each other when assembled. This assembly method is reversible, meaning that the two components can be disassembled after assembly without damaging any parts, and the installation and disassembly process is repeatable. For example, corresponding connection positions can be set between the components, and assembly can be achieved using fasteners. Specifically, a detachable fixed connection can be implemented through bolt and nut connections, snap-fit ​​connections, keyway connections, expansion sleeve connections, pin connections, coupling connections, etc.

[0041] To address the problems of traditional rescue training facilities having fixed structures, limited functions, and a lack of dedicated ground scenario simulation facilities for accident rescue training, this application provides a multifunctional simulated ground system for training, with specific embodiments as follows:

[0042] In one embodiment, please refer to Figures 1 to 4 A multi-functional simulated ground system for training includes a basic frame 1, connecting components 2, simulated road components 3, and simulated water components 4.

[0043] In this embodiment, the base frame 1 is a recessed structure with a cavity that sinks from the ground. By directly hoisting the simulated accident vehicle into the cavity of the base frame 1, simulated rescue training for vehicle falls can be carried out.

[0044] In this embodiment, the simulated road component 3 includes several modular pavement units 31, a collapse simulation unit, a modular base unit 32, a support portion 33 with supporting legs, and a connecting portion 34. The modular pavement units 31 and the collapse simulation unit are interchangeable, with one being selectively assembled on top of the modular base unit 32; the collapse simulation unit has several arrayed retraction mechanisms. By replacing the modular pavement units 31 and the collapse simulation unit, conventional road accident environments and collapsed road accident environments can be simulated respectively.

[0045] In this embodiment, the main body of the support 33 is a rigid load-bearing frame fixedly connected to the bottom of the modular base unit 32, used to bear the stress load generated by vehicles, obstacles, and personnel arranged on the modular road surface unit 31 or the collapse simulation unit. The support legs are arranged around the perimeter of the support 33 and extend vertically. After the simulated road component 3 and the base frame 1 are assembled, the support legs are embedded in the inner cavity along the inner wall of the base frame 1. During training, after the modular road surface unit 31 transfers gravity to the support 33, it will cause local deformation of the main body of the support 33, thereby causing each support leg to abut against the inner wall of the base frame 1 to disperse stress and stabilize the support.

[0046] In this embodiment, the connecting part 34 is detachably and fixedly connected to the top of the base frame 1 through the connecting component 2; the projection of the module base unit 32 in the vertical direction completely covers the base frame 1, and the module base unit 32 is flush with the ground or erected on the ground.

[0047] In this embodiment, the water area simulation component 4 includes a waterproof liner laid on the inner wall of the base frame 1, and a water injection unit and a drainage unit integrated on the base frame 1. By injecting water of different depths into the base frame 1 using the water injection unit, a simulated accident vehicle can be lowered in, recreating scenarios of a vehicle wading through water or falling into water, and enabling corresponding rescue training. The waterproof liner can be made of PVC-coated fabric or a high-density polyethylene geomembrane; the water injection unit can be a variable frequency centrifugal pump equipped with an electromagnetic flow valve, which performs water injection operations by connecting to a water supply pipe; the drainage unit can be a submersible sewage pump located at the bottom of the base frame 1.

[0048] In this embodiment, the modular road surface unit 31 includes at least interchangeable asphalt simulation module, concrete simulation module, snow and ice simulation module, mud simulation module, and oil pollution simulation module. The asphalt simulation module can be made of thermoplastic elastomer and steel fiber reinforced concrete, with a graphene anti-slip coating sprayed on the surface to increase friction; the concrete simulation module can be made of C30 steel fiber reinforced concrete; the snow and ice simulation module can be made of high-density polyethylene with a low-temperature circulation pipeline of ethylene glycol solution, with an anti-slip sand particle coating on the surface; the mud simulation module can be made of flexible polyurethane elastomer mixed with 30% by volume quartz sand particles, and the surface viscosity can be adjusted by injecting silicone oil to simulate the drag resistance when a tire gets stuck; the oil pollution simulation module can be made of epoxy resin-based composite material, with a superhydrophobic coating on the surface, allowing for rapid collection and cleaning of oil pollution after training.

[0049] Furthermore, each modular road surface unit 31 and the collapse simulation unit is assembled with the modular base unit 32 via electromagnetic latches. For example, each modular road surface unit 31 and the collapse simulation unit has a base plate structure. The top of the base plate is used to arrange simulated road surfaces for different scenarios, and the bottom of the base plate has uniform mounting seats at least at the four corners. The mounting seats are equipped with neodymium iron boron permanent magnets and are axially magnetized. The top of the modular base unit 32 is provided with positioning grooves corresponding to the layout of each mounting seat, and the positioning grooves integrate solenoid electromagnets.

[0050] In use, each mounting base is inserted into its corresponding positioning slot. Powering on the electromagnet causes it to generate magnetic force, attracting the permanent magnet and locking it in place, thus completing the assembly of the modular road surface unit 31 or the collapse simulation unit with the modular base unit 32. For disassembly, the power is disconnected, the electromagnet coil is de-energized, the magnetic field disappears, and the attraction between the permanent magnet and the electromagnet is released, allowing the modular road surface unit 31 or the collapse simulation unit to be moved out. Notably, a spring-loaded ejection mechanism can be installed at the bottom of the positioning slot, automatically ejecting after the electromagnet is de-energized to assist in disassembly.

[0051] Therefore, the multi-functional simulated ground system provided in this application has multi-dimensional scene reconstruction capabilities. First, it can utilize the sunken inner cavity space of the basic frame 1 to simulate vehicle fall rescue, or inject water into the basic frame 1 through the water simulation component 4 to simulate vehicle wading or vehicle falling into water rescue scenarios. After completing the assembly of the simulated road component 3 and the basic frame 1, by replacing different modular road surface units 31, it can simulate conventional asphalt and concrete road surfaces, as well as special snow, ice, mud, and oily road surfaces, accurately reproducing the road surface characteristics under different scenarios. At the same time, by replacing the collapse simulation unit, it can also restore the scenario of vehicles being trapped due to road surface subsidence or road section collapse, providing a flexible, efficient, and realistic training environment for accident rescue training, effectively solving the problems of single function and fixed scenarios of traditional training facilities.

[0052] In one embodiment, based on the foregoing embodiments, the connecting part 34 and the connecting component 2 are connected by a snap-fit ​​structure.

[0053] Specifically, the connecting part 34 consists of several positioning pins arranged at the bottom of the module base unit 32, and the positioning pins have locking grooves on their bodies; the connecting component 2 has several fixing holes corresponding to the positioning pins, and the inner wall of the fixing holes is provided with mechanical locking tongues or elastic locking tongues.

[0054] When the connecting part 34 is assembled with the connecting assembly 2, each positioning pin is inserted into its corresponding fixing hole. After the positioning pin is in place, the elastic locking tongue is released and springs back into the locking groove to fix the positioning pin, or the mechanical locking tongue can be moved into the locking groove by manual operation to fix it. The mechanical locking tongue can move by rotation or by radial pushing displacement.

[0055] In one embodiment, the collapse simulation unit's retraction mechanism consists of hydraulic jacking columns arranged in at least a 2×2 array. This means that at least one hydraulic jacking column is positioned at each wheel location of the simulated accident vehicle to meet the needs of recreating different wheel-sinking scenarios. The hydraulic jacking columns have a stroke of 40 to 50 cm. The wheel diameter of a typical five-seater car is usually in the range of 60 to 80 cm. When the depth of the pothole exceeds the wheel radius, approximately 30 to 40 cm, a typical five-seater car is prone to becoming trapped. Therefore, using hydraulic jacking columns with a stroke of 40 to 50 cm can meet the requirements for most conventional vehicles experiencing wheel sinking and being trapped.

[0056] In this embodiment, each hydraulic jacking column has a contact portion made of flexible polyurethane foam at its top. Flexible polyurethane foam is a highly elastic porous polymer material. Based on its highly elastic deformation space in its molecular structure, it can maintain a flat shape when not subjected to external force or only under normal load, thus simulating the integrity of a normal road surface. When the supporting force disappears, such as when the hydraulic jacking column contracts, it can naturally sink and wrinkle under external force or gravity, and the deformation process is continuous without rigid fracture, naturally restoring the gradual change in road surface from intact to partially sunken. At the same time, flexible polyurethane foam has excellent tear resistance and resilience; its compressive strength can withstand short-term rolling by light and medium-duty vehicles, obstacles, and personnel during training without irreversible deformation, meeting the requirements for repeated use while also protecting the hydraulic jacking column.

[0057] Furthermore, by contracting a single hydraulic jack or a group of hydraulic jacks in a single wheel support area, the state of a wheel sinking and slipping due to a pothole in the road can be simulated; by contracting the hydraulic jack group in the entire front wheel support area or the entire rear wheel support area, the state of a vehicle being suspended and trapped due to a partial road collapse can be simulated.

[0058] Specifically, in the initial state of the collapse simulation unit, the hydraulic jacking column is in its maximum extension and locked position, with its top rigidly connected or tightly fitted to the bottom of the flexible polyurethane foam. The hydraulic jacking column's supporting force lifts the flexible polyurethane foam to a preset height, facilitating the entry of simulated accident vehicles and scene setup. When a collapse needs to be simulated, the hydraulic control system drives the corresponding hydraulic jacking column to retract according to the required depth. The supporting force at the bottom of the flexible polyurethane foam gradually disappears as the hydraulic jacking column retracts, and under the influence of vehicle load and gravity, it naturally sinks downwards, forming a localized depression area. After the collapse simulation rescue training is completed, the hydraulic jacking column extends again, pushing the flexible polyurethane foam upwards, and its flexible structure returns to a flat shape under the supporting force.

[0059] In one embodiment, based on the foregoing embodiments, the basic frame 1 includes an outer support frame and an inner movable frame.

[0060] In this embodiment, the outer support frame is a rigid, fixed structure installed by ground subsidence; the inner movable frame is fixedly installed along the inner wall of the outer support frame, and the inner movable frame is a telescopic composite structure that can be adjusted vertically in at least one segment. Different depth adjustments using the inner movable frame can recreate different vehicle fall depths or vehicle wading situations as needed. For example, the telescopic composite structure of the inner movable frame can be driven and adjusted using electric slide rails, hydraulic cylinders, screws, etc.

[0061] In one embodiment, the modular base unit 32 integrates a slope adjustment mechanism. The slope adjustment mechanism, through a built-in lifting device, can adjust the angle of the modular road surface unit 31 or the collapse simulation unit relative to the ground by pushing one side of the modular road surface unit 31 or the collapse simulation unit, thereby simulating a sloped road surface.

[0062] In one embodiment, a pop-out air cushion is provided at the bottom of the inner cavity of the base frame 1. The pop-out air cushion can be equipped with both a manual trigger switch and an automatic trigger switch. The manual trigger switch can be located in the outer perimeter area of ​​the multi-functional simulated ground system or in the training command room, facilitating immediate deployment of the air cushion in the event of a sudden safety accident. The automatic trigger switch can be located at the bottom of the module base unit 32 or above the inner wall of the base frame 1, monitoring whether personnel or equipment accidentally fall into the base frame 1 during rescue training using the simulated road component 3. If a vehicle or person falls during a simulated accident rescue, the air cushion will deploy promptly to provide emergency cushioning protection.

[0063] In one embodiment, the modular base unit 32 has a partition groove 321 along the edge of the assembly area of ​​the modular road surface unit 31 or the collapse simulation unit. The partition groove 321 can clearly divide the training area, and at the same time, it can also collect leaks generated during training or block the fire in the training area. For example, the partition groove 321 can be equipped with a C-shaped light steel keel, filled with fireproof rock wool, and covered with calcium silicate board on the inner surface. If the fire gets out of control and spreads during the real fire simulation rescue training, the partition groove 321 can effectively limit the fire to the training area.

[0064] The above are merely optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multifunctional simulated ground system for training, characterized in that, Includes basic framework, connecting components, simulated road components, and simulated water components; The basic frame is a recessed structure with accommodating cavities that is sunk from the ground. The simulated road component includes several modular pavement units, a collapse simulation unit, a modular base unit, a support portion with supporting legs, and a connecting portion; the modular pavement units and the collapse simulation units are interchangeable, with one being selectively assembled on top of the modular base unit; the collapse simulation unit has several arrayed retraction mechanisms; the support portion supports the bottom of the modular base unit by abutting against the inner wall of the foundation frame through the supporting legs; The connecting part is detachably and fixedly connected to the top of the base frame via the connecting assembly; the vertical projection of the module base unit completely covers the base frame. The water area simulation component includes a waterproof lining laid on the inner wall of the base frame, and a water injection unit and a drainage unit integrated on the base frame. The modular road surface unit includes at least interchangeable asphalt simulation modules, concrete simulation modules, ice and snow simulation modules, mud simulation modules, and oil pollution simulation modules.

2. The multifunctional simulated ground system for training according to claim 1, characterized in that, The connecting part and the connecting component are connected by a snap-fit ​​structure; The connecting part consists of several positioning pins arranged at the bottom of the module base unit, and the positioning pins have locking grooves on their bodies. The connecting component is constructed with a plurality of fixing holes corresponding to the positioning pins, and the inner wall of the fixing holes is provided with a mechanical locking tongue or an elastic locking tongue. When the positioning pin is embedded in the fixing hole, the mechanical locking tongue or elastic locking tongue is engaged in the locking groove.

3. The multifunctional simulated ground system for training according to claim 1, characterized in that, The collapse simulation unit has a contraction mechanism consisting of at least a 2×2 array of hydraulic lifting columns, and each hydraulic lifting column has a contact part made of flexible polyurethane foam at its top. The contraction of a single hydraulic jack in a single wheel support area or a group of hydraulic jacks in a local area simulates the state of a wheel slipping due to a pothole in the road surface; the contraction of the hydraulic jacks in the entire front wheel support area or the entire rear wheel support area simulates the state of a vehicle being suspended and trapped due to a local road collapse. The stroke of the hydraulic lifting column is 40 to 50 cm.

4. The multifunctional simulated ground system for training according to claim 1, characterized in that, The modular road surface unit and the collapse simulation unit are assembled with the modular base unit via electromagnetic locking.

5. The multifunctional simulated ground system for training according to claim 1, wherein, The basic frame includes an outer support frame and an inner movable frame; The outer support frame is a rigid fixed structure installed by sinking into the ground; the inner movable frame is fixedly installed along the inner wall of the outer support frame, and the inner movable frame is a telescopic composite structure that can be adjusted at least in one section in the vertical direction.

6. The multifunctional simulated ground system for training of claim 1, wherein, The module base unit integrates a slope adjustment mechanism; The slope adjustment mechanism uses a built-in lifting device to adjust the angle of the modular road surface unit or the collapse simulation unit relative to the ground, thus simulating a sloped road surface.

7. The multifunctional simulated ground system for training of claim 1, wherein, A pop-up air cushion is provided at the bottom of the inner cavity of the basic frame.

8. The multifunctional simulated ground system for training according to any one of claims 1 to 7, characterized in that, The module base unit has a partition groove along the edge of the assembly area of ​​the modular road surface unit or the collapse simulation unit for collecting leaks or blocking fire.

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