A house car frame with double-layer heat preservation structure

Abstract

The utility model relates to frame technical field discloses a house car frame with double -layer heat preservation structure, including main frame, the outer wall bottom fixed connection of main frame has the bottom plate, the outer wall top of bottom plate is provided with heat recovery mechanism, the outer wall of main frame is provided with and stores temperature mechanism, the temperature storage mechanism includes the temperature storage box, the outer wall bottom fixed connection of temperature storage box is in the outer wall top of bottom plate, the outer wall top fixed connection of temperature storage box has the heat preservation lid, the outer wall fixed connection of heat preservation lid has the limit strip, the inner wall of temperature storage box sets up the limit slot. In the utility model, the fan produces the heat flow in the warm air box, the box body separates the high temperature component and transports the warm air in the orientation, part warm air spreads evenly to the living area through the temperature guide hole, the rest heat energy is transported to the temperature storage box and stores temporarily, the temperature storage box fills the heat storage material and lingers the heat, when needing to promote the room temperature, opens the check valve to make the heat flow of temperature storage box to release through the diffusion head.

Description

Technical Field

[0001] This utility model relates to the field of frame technology, and in particular to a motorhome frame with a double-layer insulation structure. Background Technology

[0002] A motorhome, also known as a recreational vehicle or RV, is a mobile vehicle that combines living and travel functions. It is equipped with sleeping, cooking, bathroom, storage, and social facilities. The motorhome frame supports these components and adopts a sandwich design. The outer material is fiberglass or aluminum plate, the middle material is a polyurethane insulation layer, and the inner material is sheet material. Together, they achieve lightweight, good heat insulation and effective sound insulation, and ensure the stability of the vehicle.

[0003] Traditional RV frames often employ a single-layer sandwich structure, consisting of inner and outer decorative layers sandwiching insulation material. This relies on the material properties of the insulation layer to block heat transfer between the inside and outside, maintaining the interior temperature by slowing down heat conduction through the density and thickness of the insulation layer. However, this single-layer structure suffers from heat loss along the metal frame, and the continuity of the insulation layer is often interrupted by openings in the frame's piping, significantly reducing the actual insulation effect. Current RV frame technologies optimize the main structural design, using integral fiberglass shells or aluminum alloy profiles to achieve higher structural strength and airtightness. The insulation layer is mainly achieved by filling polyurethane foam or extruded board to achieve closed heat insulation, which enhances the heat insulation performance in terms of material and process. However, in actual use, the above-mentioned device fails to form a double-layer heat insulation barrier. The frame relies on a single heat insulation layer to weaken temperature fluctuations and lacks the synergistic effect of the inner and outer heat insulation layers. As a result, the heat insulation performance of the car body is still weak in low-temperature environments, making it difficult to completely block the cold bridge effect caused by the metal frame. This ultimately leads to increased energy consumption and unstable temperature control. Therefore, a car frame with a double-layer heat insulation structure is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a motorhome frame with a double-layer insulation structure, which aims to improve the problem of weak insulation effect in low-temperature environments and the difficulty in completely blocking the cold bridge effect caused by the metal frame in the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a motorhome frame with a double-layer insulation structure, comprising a main frame, a base plate fixedly connected to the bottom of the outer wall of the main frame, a heat recovery mechanism provided at the top of the outer wall of the base plate, a heat storage mechanism provided on the outer wall of the main frame, the heat storage mechanism comprising a heat storage box, the bottom of the outer wall of the heat storage box fixedly connected to the top of the outer wall of the base plate, an insulation cover fixedly connected to the top of the outer wall of the heat storage box, a limiting strip fixedly connected to the outer wall of the insulation cover, a limiting groove provided on the inner wall of the heat storage box, a heat guiding plate fixedly connected to the inner wall of the heat storage box, an insulation mechanism provided on the outer wall of the main frame, a surrounding frame fixedly connected to the outer wall of the main frame, and an expansion mechanism provided on the outer wall of the surrounding frame.

[0006] The heat recovery mechanism includes a warm air box, a box cover fixedly connected to the top of the outer wall of the warm air box, a sealing gasket fixedly connected to the bottom of the outer wall of the box cover, a slot opened on the outer wall of the warm air box, a temperature guiding hole opened on the right side of the outer wall of the warm air box, a heat insulation plate slidably connected to the inner wall of the slot, a magnetic strip fixedly connected to the top of the outer wall of the heat insulation plate, a warm air assembly provided at the bottom of the inner wall of the warm air box, a flow guiding assembly provided on the left side of the outer wall of the warm air box, and a diffusion assembly provided at the top of the outer wall of the base plate.

[0007] As a further description of the above technical solution:

[0008] The expansion mechanism includes a rotating shaft, the inner wall of which is rotatably connected to the outer wall of the frame. A telescopic rod is fixedly connected to the outer wall of the rotating shaft. A fixing flap is fixedly connected to the outer wall of the telescopic rod. A fixing recess is fixedly connected to the outer wall of the telescopic rod. A protrusion is fixedly connected to the outer wall of the telescopic rod.

[0009] As a further description of the above technical solution:

[0010] The temperature storage mechanism includes a temperature storage box, the bottom of the outer wall of the temperature storage box is fixedly connected to the top of the outer wall of the base plate, an insulation cover is fixedly connected to the top of the outer wall of the temperature storage box, a limit strip is fixedly connected to the outer wall of the insulation cover, a limit groove is opened on the inner wall of the temperature storage box, and a temperature guiding plate is fixedly connected to the inner wall of the temperature storage box.

[0011] As a further description of the above technical solution:

[0012] The insulation mechanism includes an insulation side panel, the outer wall of which is fixedly connected to the outer wall of the main frame, and an insulation top panel is fixedly connected to the outer wall of the main frame.

[0013] As a further description of the above technical solution:

[0014] The heating element includes a support strip, the bottom of the outer wall of the support strip is fixedly connected to the bottom of the inner wall of the heating box, and a heater is fixedly connected to the top of the outer wall of the support strip.

[0015] As a further description of the above technical solution:

[0016] The flow guiding assembly includes a flow guiding pipe, the right end of the outer wall of the flow guiding pipe is connected to the left side of the outer wall of the heater box, and a one-way valve is fixedly connected to the outer wall of the flow guiding pipe.

[0017] As a further description of the above technical solution:

[0018] The diffusion assembly includes a diffusion tube, the left side of the outer wall of the diffusion tube is connected to the right side of the outer wall of the temperature storage box, a diffusion head is fixedly connected to the outer wall of the diffusion tube, and a pressure relief valve is fixedly connected to the outer wall of the diffusion tube.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the main frame is fixedly connected to a fixed edge, and the outer wall of the fixed edge is fixedly connected to a wheel frame.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the heater generates heat flow inside the heat box. The box body isolates high-temperature components and delivers warm air in a directional manner. Part of the hot air is evenly diffused to the living area through the temperature guide hole, and the remaining heat energy is transported to the heat storage box for temporary storage through the guide pipe. The heat storage box is filled with special heat storage material to retain heat. When it is necessary to raise the room temperature, the one-way valve can be opened to release the heat flow stored in the heat storage box through the diffuser head, reducing energy consumption and effectively alleviating the cold bridge effect.

[0023] 2. In this utility model, the rotating shaft connects the telescopic rod and supports its rotational movement. The fixing petal enables the quick locking of the horizontal telescopic rod, and the interlocking structure of the fixing concave and convex ensures the stable engagement of the vertical telescopic rod. In the non-expanded state, the user can easily complete the multi-directional fixing with simple operation, which greatly improves storage efficiency and structural stability. When expansion is required, the constraint of the telescopic rod is released, and the rotating shaft drives it to rotate to a parallel position, taking into account both expandability and storage stability. Attached Figure Description

[0024] Figure 1 This is a perspective view of a motorhome frame with a double-layer insulation structure proposed in this utility model.

[0025] Figure 2 This is a front view of a motorhome frame with a double-layer insulation structure proposed in this utility model;

[0026] Figure 3This is a cross-sectional view of the heater box of a motorhome frame with a double-layer insulation structure proposed in this utility model.

[0027] Figure 4 This is an exploded view of the heat storage mechanism of a motorhome frame with a double-layer insulation structure proposed in this utility model.

[0028] Figure 5 This is a schematic diagram of the heat recovery mechanism of a motorhome frame with a double-layer insulation structure proposed in this utility model.

[0029] Figure 6 This is a schematic diagram of an expansion mechanism with a double-layer heat insulation structure proposed in this utility model.

[0030] Figure 7 This is a schematic diagram of a fixing recess with a double-layer heat insulation structure proposed in this utility model.

[0031] Legend:

[0032] 1. Main frame; 2. Base plate; 3. Heat recovery mechanism; 301. Warm air box; 302. Box cover; 303. Sealing gasket; 304. Slot; 305. Temperature guide hole; 306. Insulation plate; 307. Magnetic strip; 308. Warm air assembly; 3081. Warm air blower; 3082. Support strip; 309. Flow guide assembly; 3901. One-way valve; 3902. Flow guide pipe; 310. Diffusion assembly; 3101. Diffusion pipe; 31 02. Diffuser head; 3103. Pressure relief valve; 4. Temperature storage mechanism; 401. Temperature storage box; 402. Insulation cover; 403. Limiting strip; 404. Limiting groove; 405. Temperature guide plate; 5. Insulation mechanism; 501. Insulation side plate; 502. Insulation top plate; 6. Enclosure frame; 7. Expansion mechanism; 701. Rotating shaft; 702. Telescopic rod; 703. Fixing petal; 704. Fixing recess; 705. Protrusion; 8. Fixing edge; 9. Wheel frame. Detailed Implementation

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

[0034] Reference Figure 3 , Figure 4 and Figure 5This utility model provides an embodiment of a motorhome frame with a double-layer insulation structure, including a main frame 1, which serves as a basic support structure, bearing the weight of the vehicle body, in-vehicle equipment, and personnel, and providing overall rigidity. A base plate 2 is fixedly connected to the bottom of the outer wall of the main frame 1, directly fixed to the main frame 1, bearing the load of the living area and connecting water and electricity pipelines and other modules, and must also have corrosion resistance and impact resistance. A heat recovery mechanism 3 is provided on the top of the outer wall of the base plate 2, and a heat storage mechanism 4 is provided on the outer wall of the main frame 1. The heat storage mechanism 4 includes a heat storage box 401, the bottom of the outer wall of the heat storage box 401 is fixedly connected to the top of the outer wall of the base plate 2, and an insulation cover 402 is fixedly connected to the top of the outer wall of the heat storage box 401. A limiting strip 403 is connected to the inner wall of the heat storage box 401, a limiting groove 404 is opened in the inner wall of the heat storage box 401, a heat conduction plate 405 is fixedly connected to the inner wall of the heat storage box 401, a heat insulation mechanism 5 is provided on the outer wall of the main frame 1, the heat insulation mechanism 5 includes a heat insulation side plate 501, which constitutes a multi-layer composite structure of the side wall of the car body, ensuring sound insulation and heat insulation of the car interior environment, the outer wall of the heat insulation side plate 501 is fixedly connected to the outer wall of the main frame 1, the outer wall of the main frame 1 is fixedly connected to a heat insulation top plate 502, which is the heat insulation layer of the roof, and adopts a lightweight and high-strength sandwich structure to achieve heat insulation and leak prevention, the outer wall of the main frame 1 is fixedly connected to a frame 6, which is used to install the car door, storage box and other components and ensure the rigidity of the rear of the car body, and the outer wall of the frame 6 is provided with an extension mechanism 7.

[0035] The heat recovery mechanism 3 includes a warm air box 301, which houses the heating equipment in a metal casing, isolates high-temperature components, and guides the directional delivery of hot air. A cover 302 is fixedly connected to the top of the outer wall of the warm air box 301, and a sealing gasket 303 is fixedly connected to the bottom of the outer wall of the cover 302. A slot 304 is provided on the outer wall of the warm air box 301, and a heat conduction hole 305 is provided on the right side of the outer wall of the warm air box 301, which serves as a heat delivery channel to evenly diffuse warm air into the living area. A heat insulation plate 306 is slidably connected to the inner wall of the slot 304, and the slot 304 is embedded in the slidable heat insulation plate. 306. Heat release is controlled by adjusting the opening and closing. A magnetic strip 307 is fixedly connected to the top of the outer wall of the insulation plate 306. A heating component 308 is provided at the bottom of the inner wall of the heating box 301. The heating component 308 includes a support strip 3082 and a load-bearing bracket inside the box to fix the position of the heater 3081 and prevent it from shifting due to vibration. The bottom of the outer wall of the support strip 3082 is fixedly connected to the bottom of the inner wall of the heating box 301. The heater 3081 is fixedly connected to the top of the outer wall of the support strip 3082. A guide component 309 is provided on the left side of the outer wall of the heating box 301. The flow assembly 309 includes a guide pipe 3902, the right end of the outer wall of the guide pipe 3902 is connected to the left side of the outer wall of the warm air box 301, and a one-way valve 3901 is fixedly connected to the outer wall of the guide pipe 3902. A diffuser assembly 310 is provided on the top of the outer wall of the base plate 2. The diffuser assembly 310 includes a diffuser pipe 3101, the left side of the outer wall of the diffuser pipe 3101 is connected to the right side of the outer wall of the heat storage box 401, and a diffuser head 3102 is fixedly connected to the outer wall of the diffuser pipe 3101. A pressure relief valve 3103 is fixedly connected to the outer wall of the diffuser pipe 3101, which has a safety pressure release device. To prevent the heating structure from overheating or becoming blocked, causing excessive internal pressure, while the heating air is being delivered inside the vehicle, the hot air generated in the heating box 301 is transferred to the heat storage box 401 through the guide pipe 3902. The heat storage box 401 is used to prevent the heat absorption material. When it is necessary to increase the indoor temperature, it is only necessary to open the one-way valve 3901 to release the heat flow through the diffuser head 3102 on the diffuser pipe 3101, thereby greatly improving the working efficiency of the heater 3081 and achieving double insulation under the passive insulation of the insulation side plate 501 and the insulation top plate 502.

[0036] Specifically, the heater box 301 houses the heating equipment, its function being to isolate high-temperature components and guide the hot airflow in a specific direction. A cover 302 is fixedly installed at the top of the outer wall of the heater box 301, and a sealing gasket 303 is fitted at the bottom of the outer wall of the cover 302 to improve the sealing effect. A slot 304 is formed on the outer wall of the heater box 301, and a heat-conducting hole 305 is also formed on the right side of its outer wall. This hole serves as a heat transfer path, allowing the warm air to be evenly distributed into the living space. A heat insulation plate 306 is slidably connected to the inner wall of the slot 304. This design allows the heat insulation plate 306 to be inserted and slidably placed within the slot 304. By adjusting the opening and closing position of the heat insulation plate 306, the heat release can be effectively controlled. In addition, a magnetic strip 307 is fixedly installed on the top of the outer wall of the insulation board 306 for magnetic positioning and fixation. The bottom of the inner wall of the warm air box 301 houses the warm air assembly 308, which consists of several parts, including a support strip 3082. The support strip 3082 provides support and fixation, primarily for securing the warm air unit 3081 and preventing it from shifting due to vibration during operation. The bottom of the outer wall of the support strip 3082 is fixedly connected to the bottom of the inner wall of the warm air box 301, while the top of its outer wall supports the warm air unit 3081, which is the main source of heat. A flow guide assembly 309 is connected to the left side of the outer wall of the warm air box 301. The flow guide assembly 309 contains a flow guide pipe 3902. The right end of the outer wall connects to the left side of the outer wall of the warm air box 301. A one-way valve 3901 is fixedly installed on the outer wall of the guide pipe 3902 to control the airflow direction. A diffuser assembly 310 is set on the top of the outer wall of the base plate 2. The core part of the diffuser assembly 310 is the diffuser pipe 3101. The left side of the outer wall of the diffuser pipe 3101 connects to the right side of the outer wall of the heat storage box 401. A diffuser head 3102 is fixedly installed on the outer wall of the diffuser pipe 3101. The hot air is finally released into the space through the diffuser head 3102. At the same time, a pressure relief valve 3103 is also fixedly connected to the outer wall of the diffuser pipe 3101. The pressure relief valve 3103 is a safety protection device. When the internal temperature of the warm air structure rises abnormally or the airflow channel is blocked, causing the structural pressure to increase abnormally, the pressure relief valve 3103 will activate. 03 will automatically open to release pressure and prevent pipeline pressure from exceeding the safe range. When hot air circulates within the structure, a portion of the hot air generated by the heater box 301 is transferred through the guide pipe 3902 into the heat storage box 401 for storage. The heat storage box 401 is filled with a special heat-absorbing material. When it is necessary to raise the indoor ambient temperature, simply open the one-way valve 3901, and the heat accumulated in the heat storage box 401 will flow into the diffuser pipe 3101 and finally be released through the diffuser head 3102. This operation can significantly reduce the daily operating burden of the heater 3081 and improve its actual working efficiency. At the same time, the structure is also equipped with an insulated side plate 501 and an insulated top plate 502, forming a passive insulation structure, which works in conjunction with the heat storage box 401 and the diffuser head 3102.Together, they achieve a dual insulation effect.

[0037] Reference Figure 2 , Figure 6 and Figure 7 The expansion mechanism 7 includes a pivot 701 for connecting a telescopic rod 702. The inner wall of the pivot 701 is rotatably connected to the outer wall of the frame 6. The telescopic rod 702 is fixedly connected to the outer wall of the pivot 701. A fixing flap 703 is fixedly connected to the outer wall of the telescopic rod 702 for fixing the transverse telescopic rod 702. A fixing recess 704 and a protrusion 705 are fixedly connected to the outer wall of the telescopic rod 702. The fixing recess 704 and the protrusion 705 cooperate with each other to engage and fix the longitudinal telescopic rod 702. When expansion is not required, the engagement and fixation can be completed by performing a few simple steps. When expansion is required, the telescopic rod 702 is released, and the pivot 701 is used to make it parallel to facilitate the next step of expansion.

[0038] Specifically, the pivot 701 is used to connect the telescopic rod 702. The inner wall of the pivot 701 is connected to the outer wall of the frame 6 by rotation. The telescopic rod 702 is fixedly installed on the outer wall of the pivot 701. A fixing flap 703 is also fixed on the outer wall of the telescopic rod 702. The fixing flap 703 plays a positioning role and is used to fix the laterally extending telescopic rod 702. A fixing recess 704 and a protrusion 705 are also fixedly installed on the outer wall of the telescopic rod 702. The fixing recess 704 and the protrusion 705 are interlocked and work together to constrain and lock the longitudinally extending telescopic rod 702. When the extension function is not needed, the user only needs to perform a few simple actions on each mechanism component to complete the interlocking to form a solid structure and ensure overall stability. When the extension state needs to be opened, the operation process is to release the fixed constraints on the telescopic rod 702, so that the telescopic rod 702 can move freely. Then, by rotating the pivot 701, the telescopic rod 702 is brought to a parallel state, which provides the basic conditions for performing subsequent space extension operations.

[0039] Reference Figure 1 and Figure 2 The outer wall of the main frame 1 is fixedly connected to a fixed edge 8, and the edge of its wheel rim 9 is connected to the frame to ensure sealing and buffer vibration. The outer wall of the fixed edge 8 is fixedly connected to a wheel rim 9, which has an arc-shaped structure that wraps around the tire, to fix the wheel position and transmit road impact to the suspension structure.

[0040] Specifically, a fixed edge 8 is fixedly installed on the outer wall of the main frame 1. The fixed edge 8 is a connector that connects the edge of the wheel rim 9 to the main body of the frame. It also serves to ensure sealing performance and buffer driving vibrations. The outer wall of the fixed edge 8 is fixedly connected to the wheel rim 9. The wheel rim 9 is arc-shaped and is used to wrap the tire body and fix the wheel position. At the same time, it transmits the impact force generated by the road surface during driving to the vehicle suspension structure.

[0041] Working principle: First, the heater 3081 continuously generates heat flow inside the heat box 301. The heat insulation box effectively isolates the high-temperature components of the equipment and realizes the directional delivery path of the warm air. Some of the hot air is directly diffused evenly to the living area through the heat guide hole 305, and the remaining heat energy is transferred to the heat storage box 401 for temporary storage through the guide pipe 3902. The heat storage box 401 is filled with a special heat storage material to retain and store heat resources. When the user needs to raise the indoor ambient temperature, the operator only needs to open the one-way valve 3901. At this time, the heat flow accumulated in the heat storage box 401 will enter the diffuser pipe 3101 and finally release heat through the diffuser head 3102. This heat recovery mechanism can significantly reduce the frequency of repeated start-up and shutdown of the heater 3081, while improving the heat utilization efficiency of the entire structure and reducing energy consumption costs.

[0042] Furthermore, the pivot 701 connects to and supports the telescopic rod 702 to complete the rotation action, the fixing petal 703 performs quick locking on the horizontal telescopic rod 702, and the fixing recess 704 and the protrusion 705 achieve stable constraint on the vertical telescopic rod 702 through the interlocking structure. In the normal retracted state, the user can complete multi-directional fixation in a few simple steps, which significantly improves storage efficiency and maintains the overall structural strength. When space expansion is required, simply release the locking state of the telescopic rod 702. At this time, the pivot 701 drives it to rotate to a horizontal alignment posture, reserving enough adjustment space for expansion operations. The whole mechanism not only ensures the sturdiness when stored, but also meets the flexible needs when space is extended, greatly optimizing the ease of operation and structural reliability.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A motorhome frame with a double-layer insulation structure, comprising a main frame (1), characterized in that: The bottom of the outer wall of the main frame (1) is fixedly connected to a base plate (2), the top of the outer wall of the base plate (2) is provided with a heat recovery mechanism (3), the outer wall of the main frame (1) is provided with a heat storage mechanism (4), the outer wall of the main frame (1) is provided with a heat insulation mechanism (5), the outer wall of the main frame (1) is fixedly connected to a surrounding frame (6), and the outer wall of the surrounding frame (6) is provided with an expansion mechanism (7). The heat recovery mechanism (3) includes a warm air box (301), a box cover (302) is fixedly connected to the top of the outer wall of the warm air box (301), a sealing gasket (303) is fixedly connected to the bottom of the outer wall of the box cover (302), a slot (304) is opened on the outer wall of the warm air box (301), a temperature guiding hole (305) is opened on the right side of the outer wall of the warm air box (301), a heat insulation plate (306) is slidably connected to the inner wall of the slot (304), a magnetic strip (307) is fixedly connected to the top of the outer wall of the heat insulation plate (306), a warm air assembly (308) is provided at the bottom of the inner wall of the warm air box (301), a flow guiding assembly (309) is provided on the left side of the outer wall of the warm air box (301), and a diffusion assembly (310) is provided on the top of the outer wall of the base plate (2).

2. The RV frame with a double-layer insulation structure according to claim 1, characterized in that: The expansion mechanism (7) includes a rotating shaft (701), the inner wall of which is rotatably connected to the outer wall of the frame (6), a telescopic rod (702) is fixedly connected to the outer wall of the rotating shaft (701), a fixing flap (703) is fixedly connected to the outer wall of the telescopic rod (702), a fixing recess (704) is fixedly connected to the outer wall of the telescopic rod (702), and a protrusion (705) is fixedly connected to the outer wall of the telescopic rod (702).

3. A motorhome frame with a double-layer insulation structure according to claim 1, characterized in that: The temperature storage mechanism (4) includes a temperature storage box (401). The bottom of the outer wall of the temperature storage box (401) is fixedly connected to the top of the outer wall of the base plate (2). A heat insulation cover (402) is fixedly connected to the top of the outer wall of the temperature storage box (401). A limit strip (403) is fixedly connected to the outer wall of the heat insulation cover (402). A limit groove (404) is opened on the inner wall of the temperature storage box (401). A temperature guiding plate (405) is fixedly connected to the inner wall of the temperature storage box (401).

4. A motorhome frame with a double-layer insulation structure according to claim 1, characterized in that: The insulation mechanism (5) includes an insulation side plate (501), the outer wall of which is fixedly connected to the outer wall of the main frame (1), and the outer wall of the main frame (1) is fixedly connected to an insulation top plate (502).

5. A motorhome frame with a double-layer insulation structure according to claim 1, characterized in that: The heating element (308) includes a support strip (3082), the bottom of the outer wall of the support strip (3082) is fixedly connected to the bottom of the inner wall of the heating box (301), and the top of the outer wall of the support strip (3082) is fixedly connected to a heater (3081).

6. A motorhome frame with a double-layer insulation structure according to claim 1, characterized in that: The flow guiding assembly (309) includes a flow guiding pipe (3902), the right end of the outer wall of the flow guiding pipe (3902) is connected to the left side of the outer wall of the warm air box (301), and a one-way valve (3901) is fixedly connected to the outer wall of the flow guiding pipe (3902).

7. A motorhome frame with a double-layer insulation structure according to claim 1, characterized in that: The diffusion assembly (310) includes a diffusion tube (3101), the outer left side of which is connected to the outer right side of the temperature storage box (401), a diffusion head (3102) is fixedly connected to the outer wall of the diffusion tube (3101), and a pressure relief valve (3103) is fixedly connected to the outer wall of the diffusion tube (3101).

8. A motorhome frame with a double-layer insulation structure according to claim 1, characterized in that: The outer wall of the main frame (1) is fixedly connected to a fixed edge (8), and the outer wall of the fixed edge (8) is fixedly connected to a wheel frame (9).

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