Motor home underframe

Abstract

The utility model relates to the technical field of motor homes, in particular to a motor home underframe. The front end area of the chassis is the towing part, and the towing part is an area used for being connected with the traction vehicle; the living part is arranged in the middle area of the bottom frame and provides support for future kitchens, beds and toilets; and the tail end area of the bottom frame is the object placing part. The hanging frame has the advantages that the main beam penetrating through the pulling part, the living part and the storage part is arranged, so that the problem of stress concentration caused by multiple sections of welding joints is solved, the stability and durability of the whole structure are improved, welding procedures are reduced, the manufacturing process is simplified, and the production cost is reduced; stress distribution is more uniform through the design of the channel steel main beam with the gradually-changed section, the bearing capacity of the structure is further enhanced, and unnecessary materials are reduced while the bearing capacity is enhanced by forming the straight notches and the slotted holes in the main beam and conducting closing-up treatment.

Description

Technical Field

[0001] This application relates to the field of RV technology, and in particular to an RV chassis. Background Technology

[0002] With the continuous development of the tourism industry, more and more people are choosing RV travel as a leisure activity. Travel trailers are widely popular due to their flexibility and affordability. However, traditional travel trailer chassis designs have some shortcomings, especially in terms of structural strength, weight optimization, and manufacturing costs. The multi-section welded main beams are prone to stress concentration at the weld joints, which can lead to fatigue cracks after long-term use, affecting the overall structural safety and stability. Furthermore, to ensure sufficient strength, traditional designs often require increased material thickness or the use of more reinforcing components, which not only increases the overall weight of the vehicle but also affects fuel efficiency and driving performance.

[0003] In existing technologies, the chassis of trailer caravans is typically constructed by welding and assembling multiple sections to form the main beam. While this method provides basic support, it is not the most effective solution.

[0004] This application proposes a motorhome chassis to address this issue. Summary of the Invention

[0005] The purpose of this application is to address at least one of the aforementioned technical deficiencies.

[0006] Therefore, one objective of this application is to provide a motorhome chassis to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0007] To achieve the above objectives, one embodiment of this application provides a motorhome chassis, comprising: a chassis; a towing section, the front end of which is a towing section for connecting to a towing vehicle; a living section, the middle section of which provides support for a future kitchen, bed, and bathroom facilities; a storage section, the rear end of which is a storage section for storing luggage, outdoor equipment, and food supplies; and at least one main beam running through the towing section, living section, and storage section to provide primary support for the chassis.

[0008] Preferably, in any of the above schemes, the main beam is a channel steel with two ends designated as a first end and a second end; wherein the first end has a larger cross-sectional dimension and the second end has a smaller cross-sectional dimension, and the cross-sectional dimension gradually decreases from the first end to the second end, forming a gradually narrowing structure.

[0009] Preferably, the main beam is provided with several straight slots and holes, and both the straight slots and holes are tapered inward and protrude, so that the main beam has a stronger load-bearing capacity.

[0010] Preferably, in any of the above embodiments, the trailer is formed by a trailer frame, and the trailer frame is mounted on the main beam.

[0011] Preferably, the living area is provided with a number of cross-fixed auxiliary beams, and some of the auxiliary beams are cross-fixed with the main beam.

[0012] Preferably, in any of the above embodiments, the storage section is composed of a storage frame, and the storage frame is connected to the second end of the main beam.

[0013] Compared with the prior art, the advantages and beneficial effects of this application are as follows:

[0014] 1. By setting a main beam that runs through the towing section, living area, and storage area, the stress concentration problem caused by multiple welded joints is eliminated, the stability and durability of the overall structure are improved, welding procedures are reduced, the manufacturing process is simplified, and production costs are reduced.

[0015] 2. The design of the channel steel main beam with a gradually changing cross section makes the stress distribution more uniform and further enhances the load-bearing capacity of the structure. By opening straight slots and holes on the main beam and performing a closing treatment, the load-bearing capacity is enhanced while reducing unnecessary materials and further reducing weight.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the assembly according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the main beam according to an embodiment of this application;

[0020] Figure 3 This is a schematic cross-sectional view of the main beam according to an embodiment of this application;

[0021] Figure 4 According to the embodiments of this application Figure 3 Enlarged diagram of point A in the middle.

[0022] In the diagram: 1. Base frame, 2. Main beam, 21. First end, 22. Second end, 23. Straight slot, 24. Slot, 3. Trailer, 4. Auxiliary beam, 5. Shelf. Detailed Implementation

[0023] like Figures 1 to 4 As shown, a motorhome chassis includes a chassis 1, a trailer section, a living area section, a storage section, and a main beam 2.

[0024] Furthermore, the main beam 2 is a channel steel, with its two ends configured as a first end 21 and a second end 22. The first end 21 is the front end, which is close to the towing part, and the second end 22 is the end end, which is close to the storage part.

[0025] Wherein, the first end 21 has a larger cross-sectional dimension, and the second end 22 has a smaller cross-sectional dimension, and the cross-sectional dimension gradually decreases from the first end 21 to the second end 22, forming a gradually narrowing structure;

[0026] The main beam 2 is provided with several straight slots 23 and slots 24. The straight slots 23 and slots 24 are all concave and convex, which makes the load-bearing capacity of the main beam 2 stronger.

[0027] The straight slots 23 are distributed in an equidistant array on the main beam 2, and the slots are also distributed in an equidistant array on the main beam 2;

[0028] The straight groove 23 and the slot 24 make the overall weight of the main beam 2 lighter. The straight groove 23 and the slot 24 are designed to be inwardly narrowed and protruding, which allows the load-bearing capacity of the main beam 2 to be distributed in multiple directions, making the overall load-bearing capacity of the main beam 2 stronger and thus increasing the service life of the main beam 2.

[0029] Specifically, the web thickness of the main beam 2 is 5-10mm;

[0030] The flange thickness of the main beam 2 is 6-12mm.

[0031] Furthermore, the front end area of ​​the underframe 1 is configured as a towing section, which is an area for connecting with the towing vehicle. The towing section is composed of a towing frame 3, which is mounted on the main beam 2.

[0032] Furthermore, the central area of ​​the base frame 1 is set up as the living area, providing support for the future kitchen, bed, and bathroom facilities. This area is used to arrange the future RV infrastructure such as the kitchen, bed, and bathroom. The living area is composed of several cross-fixed auxiliary beams 4, and some of the auxiliary beams 4 are cross-fixed with the main beam 2.

[0033] Furthermore, the rear area of ​​the base frame 1 is set as a storage area for placing luggage, equipment, food and other supplies. The storage area is composed of a storage rack 5, which is connected to the second end 22 of the main beam 2.

Claims

1. A motorhome chassis, characterized in that: include: Base frame; The towing section, the front end area of ​​the underframe is the towing section, which is the area for connecting with the towing vehicle; The living area, located in the middle of the base frame, provides support for future kitchen, bed, and bathroom facilities. The storage area at the rear end of the base frame is used to store luggage, outdoor equipment, and food supplies. At least one main beam runs through the trailer section, living area section, and storage section, providing the main support for the underframe.

2. The RV chassis according to claim 1, characterized in that: The main beam is a channel steel, with its two ends designated as a first end and a second end; The first end has a larger cross-sectional dimension, and the second end has a smaller cross-sectional dimension, with the cross-sectional dimension gradually decreasing from the first end to the second end, forming a gradually narrowing structure.

3. A motorhome chassis according to claim 2, characterized in that: The main beam has several straight slots and holes, all of which taper inward and protrude, making the main beam more load-bearing.

4. A motorhome chassis according to claim 1, characterized in that: The trailer is composed of a trailer frame, which is mounted on the main beam.

5. A motorhome chassis according to claim 1, characterized in that: The living quarters are provided with a number of cross-fixed auxiliary beams, some of which are cross-fixed with the main beam.

6. A motorhome chassis according to claim 2, characterized in that: The storage section is composed of a storage frame, which is connected to the second end of the main beam.

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