A motor home chassis and processing equipment thereof
By using 700L low-carbon alloy high-strength steel beams and an optimized RV chassis design, the problems of insufficient structural strength and stability in existing technologies have been solved, achieving lightweighting and improved stability of the RV chassis and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING JIEWAI AUTOMOBILE SERVICE CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-05
AI Technical Summary
Existing RV chassis are made of ordinary steel or aluminum, which is insufficient to meet the structural strength and stability requirements under high-speed driving and bumpy road conditions.
The structure uses 700L low-carbon alloy high-strength steel for the main beam, combined with optimized structural design, thickened stiffeners and reinforced beams to form components such as front reinforced frame, rear reinforced frame, and crossbeams, thereby improving structural rigidity. Processing equipment is also provided to facilitate component fixing and welding.
It achieves structural strength and stability of the RV chassis under high-speed driving and bumpy road conditions, reduces weight by 20% to 30%, extends service life, and maintains good strength performance.
Smart Images

Figure CN224324042U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle frame technology, and in particular to a motorhome chassis and its processing equipment. Background Technology
[0002] A motorhome is a special vehicle that integrates "living" and "transportation" functions. It not only possesses the driving capabilities of a traditional car but also comes equipped with complete home facilities, such as bedrooms, kitchens, bathrooms, and living rooms, meeting the user's living needs during travel. The motorhome chassis is the "skeleton" of the motorhome, playing a crucial role in supporting the vehicle body and connecting the chassis to the superstructure. Its design directly affects the motorhome's safety, stability, and comfort.
[0003] Currently, existing RV chassis are usually made of ordinary steel or aluminum, which makes it difficult for the structure of the RV chassis to meet the structural strength and stability required for RVs to travel at high speeds and on bumpy roads. Utility Model Content
[0004] The purpose of this utility model is to provide a motorhome chassis and its processing equipment, which optimizes the structural design of the motorhome chassis to meet the structural strength and stability required for motorhomes to travel at high speeds and on bumpy roads.
[0005] To achieve the above objectives, in a first aspect, the present invention provides a motorhome chassis, including a front chassis, two crossbeams, a rear chassis, and a reinforcing assembly. One end of each of the two crossbeams is fixedly connected to the side of the front chassis, and the rear chassis is fixedly connected to the end of each of the two crossbeams away from the front chassis. The reinforcing assembly includes a front reinforcing frame, a front thickened stiffener, a first intermediate thickened stiffener, a second intermediate thickened stiffener, a first rear reinforcing frame, and a second rear reinforcing frame.
[0006] The front reinforcing frame is fixedly connected to the front base frame and located on the side of the front base frame; the front thickened stiffener is fixedly connected between the front base frame and the front reinforcing frame; the first intermediate thickened stiffener is fixedly connected between the front base frame and the crossbeam; the second intermediate thickened stiffener is fixedly connected between the rear base frame and the crossbeam; the first rear reinforcing frame is fixedly connected to the crossbeam and to the rear base frame, and located on the side of the rear base frame; the second rear reinforcing frame is fixedly connected to the crossbeam and to the rear base frame, and located on the side of the rear base frame away from the first rear reinforcing frame.
[0007] The reinforcing assembly further includes multiple rear thickening stiffeners; the multiple rear thickening stiffeners are respectively fixedly connected to the rear base frame and are located on the inner side of the rear base frame.
[0008] The reinforcing assembly further includes a first reinforcing beam and a second reinforcing beam; the first reinforcing beam is fixedly connected between the rear base frame and the first rear reinforcing frame; the second reinforcing beam is fixedly connected between the rear base frame and the second rear reinforcing frame.
[0009] Secondly, this utility model also provides a motorhome chassis processing equipment for processing motorhome chassis, including a processing table and multiple fixing components; the multiple fixing components are respectively arranged on the top of the processing table.
[0010] The fixing assembly includes a limiting frame, a docking block, a placement platform, two limiting plates, a cylinder, a clamping plate, a stud, and a nut. The limiting frame is fixedly connected to the processing table and is located on top of the processing table. The docking block is located inside the limiting frame. The placement platform is fixedly connected to the docking block and is located on top of the docking block. The two limiting plates are fixedly connected to the top sides of the placement platform, and one side of each limiting plate has an opening. The cylinder is fixedly connected to the side of the placement platform. The clamping plate is fixedly connected to the output rod of the cylinder and is located on the side of the cylinder. The stud is fixedly connected to the docking block and is located at the bottom of the docking block. The nut is threadedly connected to the stud and is located on the side of the stud.
[0011] This utility model discloses a motorhome chassis and its processing equipment. The chassis components are made of 700L high-strength steel, a low-carbon alloy steel with a yield strength of up to 700MPa, exhibiting excellent load-bearing capacity and fatigue resistance. At stress-concentrated nodes, a front thickened stiffener, a first intermediate thickened stiffener, and a second intermediate thickened stiffener are added. The front and rear chassis, in conjunction with the front reinforcing frame, the front thickened stiffener, the first intermediate thickened stiffener, the second intermediate thickened stiffener, the first rear reinforcing frame, and the second rear reinforcing frame, optimize structural rigidity to ensure the stability of the motorhome chassis under load and dynamic conditions. This utility model achieves overall lightweighting of the motorhome chassis while increasing strength, reducing weight by approximately 20% to 30% compared to traditional steel. The high-strength steel material and optimized structural design significantly extend the chassis's service life, maintaining good strength performance even under long-term alternating loads. Through optimized structural design, the motorhome chassis meets the structural strength and stability requirements for high-speed driving and bumpy road conditions. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0013] Figure 1 This is a structural schematic diagram of the RV chassis of this utility model.
[0014] Figure 2 This is a structural schematic diagram of the RV chassis processing equipment of this utility model.
[0015] Figure 3 This is a structural schematic diagram of the RV chassis processing equipment of this utility model from another perspective.
[0016] Figure 4 This is a structural schematic diagram of the fixing component of this utility model.
[0017] Figure 5 This is a cross-sectional view of the fixing component of this utility model.
[0018] 1-Front base frame, 2-Crossbeam, 3-Rear base frame, 4-Front reinforcing frame, 5-Front thickened stiffening plate, 6-First intermediate thickened stiffening plate, 7-Second intermediate thickened stiffening plate, 8-First rear reinforcing frame, 9-Second rear reinforcing frame, 10-Rear thickened stiffening plate, 11-First reinforcing beam, 12-Second reinforcing beam, 13-Processing table, 14-Fixing component, 15-Limiting frame, 16-Dating block, 17-Placement table, 18-Limiting plate, 19-Cylinder, 20-Clamping plate, 21-Stud, 22-Nut, 23-Opening. Detailed Implementation
[0019] Firstly, please refer to Figure 1 , Figure 1 This is a structural schematic diagram of the RV chassis of this utility model.
[0020] This utility model provides a motorhome chassis, including a front chassis 1, two crossbeams 2, a rear chassis 3, and a reinforcing assembly. The reinforcing assembly includes a front reinforcing frame 4, a front thickened stiffener 5, a first intermediate thickened stiffener 6, a second intermediate thickened stiffener 7, a first rear reinforcing frame 8, a second rear reinforcing frame 9, multiple rear thickened stiffeners 10, a first reinforcing beam 11, and a second reinforcing beam 12. The aforementioned scheme optimizes the structural design of the motorhome chassis, meeting the structural strength and stability required for high-speed driving and bumpy road conditions.
[0021] In this specific embodiment, the rear base frame 3 is fixedly connected to the two crossbeams 2 at the ends away from the front base frame 1; the front reinforcing frame 4 is fixedly connected to the front base frame 1 and located on the side of the front base frame 1; the front thickened stiffener 5 is fixedly connected between the front base frame 1 and the front reinforcing frame 4; the first intermediate thickened stiffener 6 is fixedly connected between the front base frame 1 and the crossbeam 2; the second intermediate thickened stiffener 7 is fixedly connected between the rear base frame 3 and the crossbeam 2; the first rear reinforcing frame 8 is fixedly connected to the crossbeam 2 and to the rear base frame 3, and located on the side of the rear base frame 3; the second rear reinforcing frame 9 is fixedly connected to the crossbeam 2 and to the rear base frame 3, and located on the side of the rear base frame 3 away from the first rear reinforcing frame 8. The various components of the RV chassis are made of 700L steel beams, a low-carbon alloy high-strength steel with a yield strength of up to 700MPa. It has excellent load-bearing capacity and fatigue resistance. At stress-concentrated nodes (such as the wheel area and the connection between the bottom of the box), the front thickened stiffener 5, the first intermediate thickened stiffener 6, and the second intermediate thickened stiffener 7 are added. The front chassis 1 and the rear chassis 3, together with the front reinforcing frame 4, the front thickened stiffener 5, the first intermediate thickened stiffener 6, the second intermediate thickened stiffener 7, the first rear reinforcing frame 8, and the second rear reinforcing frame 9, optimize the structural rigidity to ensure the stability of the RV chassis under load and dynamic conditions. This invention can achieve overall lightweighting of the RV chassis while improving strength, reducing weight by about 20% to 30% compared to traditional steel. The high-strength steel material and optimized structural design significantly extend the service life of the chassis, maintaining good strength performance under long-term alternating loads. By optimizing the structural design of the RV chassis, it meets the structural strength and stability required for RVs to travel at high speeds and on bumpy roads.
[0022] The plurality of rear stiffening plates 10 are fixedly connected to the rear base frame 3 and are located on the inner side of the rear base frame 3. The stability of the rear base frame 3 can be improved by the plurality of rear stiffening plates 10.
[0023] Secondly, the first reinforcing beam 11 is fixedly connected between the rear base frame 3 and the first rear reinforcing frame 8; the second reinforcing beam 12 is fixedly connected between the rear base frame 3 and the second rear reinforcing frame 9. The first reinforcing beam 11 and the second reinforcing beam 12 can improve the overall stability of the RV base frame.
[0024] When using this utility model, each component of the RV chassis is made of 700L beam plate. This material is a low-carbon alloy high-strength steel with a yield strength of up to 700MPa, which has excellent load-bearing capacity and fatigue resistance. At the stress concentration nodes, the front thickened stiffener 5, the first intermediate thickened stiffener 6, and the second intermediate thickened stiffener 7 are added. The front chassis 1 and the rear chassis 3 are combined with the front reinforcing frame 4, the front thickened stiffener 5, the first intermediate thickened stiffener 6, the second intermediate thickened stiffener 7, the first rear reinforcing frame 8, the second rear reinforcing frame 9, the rear thickened stiffener 10, the first reinforcing beam 11, and the second reinforcing beam 12. By optimizing the structural rigidity, the stability of the RV chassis under load and dynamic conditions is ensured. This invention can achieve overall lightweighting of the RV chassis while improving strength, reducing weight by about 20% to 30% compared to traditional steel. The high-strength steel material and optimized structural design significantly extend the service life of the chassis, maintaining good strength performance under long-term alternating loads. By optimizing the structural design of the RV chassis, it meets the structural strength and stability required for RVs to travel at high speeds and on bumpy roads.
[0025] Secondly, please refer to Figures 2-5 ,in, Figure 2 This is a structural schematic diagram of the RV chassis processing equipment of this utility model. Figure 3 This is a structural schematic diagram of the RV chassis processing equipment of this utility model from another perspective. Figure 4 This is a structural schematic diagram of the fixing component of this utility model. Figure 5 This is a cross-sectional view of the fixing component of this utility model.
[0026] This utility model also provides a motorhome chassis processing equipment for processing motorhome chassis. The motorhome chassis processing equipment includes a processing table 13 and multiple fixing components 14. The fixing components 14 include a limiting frame 15, a docking block 16, a placement table 17, two limiting plates 18, a cylinder 19, a clamping plate 20, a stud 21, and a nut 22.
[0027] In this specific embodiment, multiple fixing components 14 are respectively disposed on the top of the processing table 13. The multiple fixing components 14 can fix the front base frame 1, the crossbeam 2, and the rear base frame 3 for welding processing.
[0028] Furthermore, the limiting frame 15 is fixedly connected to the processing table 13 and is located on top of the processing table 13; the docking block 16 is located inside the limiting frame 15; the placement table 17 is fixedly connected to the docking block 16 and is located on top of the docking block 16; two limiting plates 18 are fixedly connected to the top sides of the placement table 17, and one side of the limiting plate 18 is provided with an opening 23; the cylinder 19 is fixedly connected to the side of the placement table 17; the clamping plate 20 is fixedly connected to the output rod of the cylinder 19 and is located on the side of the cylinder 19; the stud 21 is fixedly connected to the docking block 16 and is located at the bottom of the docking block 16; the nut 22 is threadedly connected to the stud 21 and is located on the side of the stud 21. The positions of the multiple fixing components 14 are designed according to the dimensions of the RV chassis. The front chassis 1, the crossbeam 2, and the rear chassis 3 are respectively placed on multiple placement platforms 17. At this time, the connection points of the front chassis 1, the crossbeam 2, and the rear chassis 3 will contact each other. Then, by controlling the cylinder 19, the clamping plate 20 is driven to extend into the opening 23. The clamping plate 20 clamps and fixes the front chassis 1, the crossbeam 2, and the rear chassis 3. Subsequently, the front chassis 1, the crossbeam 2, and the rear chassis 3 can be fixed. The frame 3 is welded to form the RV chassis. The processing table 13 has through holes adapted to the studs 21. When installing the fixing component 14, the mating block 16 is placed in the limiting frame 15, allowing the studs 21 to pass through the processing table 13. Then, the nut 22 is tightened at the bottom of the studs 21, thus installing the fixing component 14 on the processing table 13. This fixing method facilitates the installation and removal of the fixing component 14 for replacement in case of damage. Additionally, the fixing component 14 can be added to the processing table 13 to fix other components of the RV chassis, such as the front reinforcing frame 4 and the front thickened stiffener 5.
[0029] This utility model discloses a motorhome chassis processing equipment. The positions of multiple fixing components 14 are designed according to the dimensions of the motorhome chassis. The front chassis 1, the crossbeam 2, and the rear chassis 3 are respectively placed on multiple placement platforms 17. At this time, the connection positions of the front chassis 1, the crossbeam 2, and the rear chassis 3 will contact each other. Then, by controlling the cylinder 19, the clamping plate 20 is driven to extend into the opening 23. The clamping plate 20 clamps and fixes the front chassis 1, the crossbeam 2, and the rear chassis 3. Subsequently, the front chassis 1, the crossbeam 2, and the rear chassis 3 can be welded to obtain the motorhome chassis.
[0030] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A motorhome chassis, comprising a front chassis, two crossbeams, and a rear chassis, wherein one end of each of the two crossbeams is fixedly connected to the side of the front chassis, and the rear chassis is fixedly connected to the end of each of the two crossbeams away from the front chassis, characterized in that, It also includes reinforcement components; The reinforcing components include a front reinforcing frame, a front thickened stiffener, a first intermediate thickened stiffener, a second intermediate thickened stiffener, a first rear reinforcing frame, and a second rear reinforcing frame; The front reinforcing frame is fixedly connected to the front base frame and located on the side of the front base frame; the front thickened stiffener is fixedly connected between the front base frame and the front reinforcing frame; the first intermediate thickened stiffener is fixedly connected between the front base frame and the crossbeam; the second intermediate thickened stiffener is fixedly connected between the rear base frame and the crossbeam; the first rear reinforcing frame is fixedly connected to the crossbeam and to the rear base frame, and located on the side of the rear base frame; the second rear reinforcing frame is fixedly connected to the crossbeam and to the rear base frame, and located on the side of the rear base frame away from the first rear reinforcing frame.
2. The RV chassis as described in claim 1, characterized in that, The reinforcing assembly also includes multiple rear thickening stiffeners; the multiple rear thickening stiffeners are respectively fixedly connected to the rear base frame and are respectively located on the inner side of the rear base frame.
3. The RV chassis as described in claim 2, characterized in that, The reinforcing assembly further includes a first reinforcing beam and a second reinforcing beam; the first reinforcing beam is fixedly connected between the rear base frame and the first rear reinforcing frame; the second reinforcing beam is fixedly connected between the rear base frame and the second rear reinforcing frame.
4. A motorhome chassis processing equipment, used for processing the motorhome chassis as described in any one of claims 1-3, characterized in that, It includes a processing table and multiple fixing components; the multiple fixing components are respectively disposed on the top of the processing table.
5. The RV chassis processing equipment as described in claim 4, characterized in that, The fixing assembly includes a limiting frame, a docking block, a placement platform, two limiting plates, a cylinder, a clamping plate, a stud, and a nut. The limiting frame is fixedly connected to the processing table and is located on top of the processing table. The docking block is located inside the limiting frame. The placement platform is fixedly connected to the docking block and is located on top of the docking block. The two limiting plates are fixedly connected to the top sides of the placement platform, and one side of each limiting plate has an opening. The cylinder is fixedly connected to the side of the placement platform. The clamping plate is fixedly connected to the output rod of the cylinder and is located on the side of the cylinder. The stud is fixedly connected to the docking block and is located at the bottom of the docking block. The nut is threadedly connected to the stud and is located on the side of the stud.