An all-terrain vehicle aluminum alloy frame structure

Abstract

The utility model provides a kind of dune buggy aluminum alloy frame structure, including the frame body made of aluminum alloy, frame body includes car head connecting frame, car body connecting frame and tail connecting frame;The front end of car body connecting frame is inserted and positioned to car head connecting frame, and is fixedly connected by welding;The connecting place of car body connecting frame and car head connecting frame is provided with first reinforcing part;The rear end of car body connecting frame is inserted and positioned to tail connecting frame, and is fixedly connected by welding;The connecting place of car body connecting frame and tail connecting frame is provided with second reinforcing part.The utility model has the advantages that the structure is made of aluminum alloy frame body, significantly reduces weight, improves vehicle control flexibility and cross-country passability;Through the connecting mode of "inserting and positioning+welding", reduce the stress concentration of connecting part, solve the problem of insufficient connection strength of existing pipe structure and easy deformation and fracture, further improve the overall structural stability.

Description

Technical Field

[0001] This utility model relates to the field of vehicle frame technology, specifically to an aluminum alloy frame structure for beach buggies. Background Technology

[0002] As a special type of vehicle suitable for unpaved roads (such as beaches, mountains, muddy areas, etc.), the frame of the ATV is the core structure that bears the weight of the entire vehicle, transmits power, and resists external impacts, directly determining the vehicle's performance and safety reliability.

[0003] In existing technologies, ATV frames are generally made primarily of steel. While steel possesses a certain level of mechanical strength, its high density results in a significant weight distribution across the frame, thus substantially increasing the overall vehicle mass. This issue manifests in several drawbacks during practical use: Firstly, the excessive weight significantly reduces power output, decreasing acceleration, climbing ability, and fuel economy. Especially on soft sand or muddy terrain, the vehicle is prone to getting stuck due to excessive ground pressure, severely impacting off-road capability. Secondly, the heavy frame increases steering load, leading to sluggish handling response, reduced driving agility, and potential safety hazards when navigating complex terrain.

[0004] In addition, most existing steel frames are made of tubular structures, and the insufficient strength of the tubular connections results in poor impact and deformation resistance of the frame. When the vehicle is traveling on bumpy roads or encounters an impact, the tubular connection points are prone to deformation due to alternating loads or instantaneous impact forces. After long-term use, serious problems such as weld cracking and tubular breakage may occur, which not only shortens the service life of the frame, but may also cause safety accidents such as loss of vehicle control.

[0005] The aforementioned problems make it difficult for existing steel ATV frames to meet the comprehensive requirements of lightweight, high strength and reliability in complex off-road scenarios, and there is an urgent need to improve the material selection and structural design of the frame. Utility Model Content

[0006] This invention addresses the technical problems of existing vehicle frame structures using steel, which leads to reduced vehicle handling agility and excessive frame weight; furthermore, the insufficient strength of the connection structure in existing tubular structures affects the frame's service life and operational safety. To overcome these shortcomings, this invention provides a solution that achieves a comprehensive balance of lightweight, high strength, and reliability through aluminum alloy materials and connection structures.

[0007] To achieve the purpose of this utility model, the following technical solution is adopted:

[0008] A beach buggy aluminum alloy frame structure includes a frame body made of aluminum alloy, comprising a front connecting frame, a body connecting frame, and a rear connecting frame. The front end of the body connecting frame is inserted into and positioned onto the front connecting frame, and the body connecting frame and the front connecting frame are fixedly connected by welding. A first reinforcing part is provided at the connection point between the body connecting frame and the front connecting frame. The rear end of the body connecting frame is inserted into and positioned onto the rear connecting frame, and the body connecting frame and the rear connecting frame are fixedly connected by welding. A second reinforcing part is provided at the connection point between the body connecting frame and the rear connecting frame. The front connecting frame and the rear connecting frame have identical structures and are symmetrically arranged on the front and rear sides of the body connecting frame. The structure uses an aluminum alloy frame, which significantly reduces weight compared to existing steel frames, improving vehicle handling agility and off-road capability. The "plug-in positioning + welding" connection method improves the assembly precision of the front, body, and rear connecting frames, reducing stress concentration at the connection points. The first and second reinforcing sections enhance connection strength, addressing the problem of insufficient connection strength and easy deformation and breakage in existing tubular structures. The symmetrical arrangement of the front and rear connecting frames ensures balanced stress distribution on the frame, further improving overall structural stability.

[0009] Preferably, the vehicle body connecting frame includes a left side bracket, a right side bracket, and several first left and right crossbars inserted between the left side bracket and the right side bracket, and the first left and right crossbars are fixedly connected to the left side bracket and the right side bracket by welding; the left side bracket and the right side bracket have the same structure and are arranged symmetrically from left to right, and each of the left side bracket and the right side bracket includes two front and rear crossbars and several vehicle body vertical bars; the two front and rear crossbars are arranged parallel and aligned vertically, and all the vehicle body vertical bars are arranged at intervals between the two front and rear crossbars, and each front and rear crossbar has a protruding insertion plate at both ends; the front connecting frame and the rear connecting frame are provided with positioning holes that are inserted and cooperate with the insertion plates. The above structure enhances the lateral rigidity of the frame and disperses the impact forces from both sides during off-road driving. The left and right brackets adopt a combination of "two front and rear crossbars + body vertical bars" to form a grid-like stress structure, which improves the longitudinal torsional resistance. The plug plates at both ends of the front and rear crossbars cooperate with the positioning plug holes of the front and rear connecting brackets to further optimize the connection accuracy, reduce welding stress, and solve the problem of insufficient connection strength of existing tubes.

[0010] Preferably, the first left and right crossbars, the front and rear crossbars, and the vertical crossbars are all made of hollow rectangular tubes; the first reinforcing part is a first triangular plate disposed between the front end of the front and rear crossbars and the front connecting frame; the second reinforcing part is a second triangular plate disposed between the rear end of the front and rear crossbars and the front connecting frame. By using hollow rectangular tubes for the first left and right crossbars, the front and rear crossbars, and the vertical crossbars, the amount of material used is reduced while ensuring structural strength, thus achieving lightweighting; the first and second reinforcing parts are set as triangular plates, utilizing the stability characteristics of triangles, significantly enhancing the shear and bending resistance at the connection points between the body connecting frame 2 and the front and rear connecting frames, preventing deformation and breakage of the connection points under bumps or impacts, and improving the durability of the frame.

[0011] Preferably, both the front and rear connecting frames include a first rectangular frame, a second rectangular frame, and several second left and right crossbars inserted between the first and second rectangular frames. The second left and right crossbars are welded and fixedly connected to the first and second rectangular frames. The first and second rectangular frames have identical structures and are symmetrically arranged. The first, second, and second left and right crossbars are all made of hollow rectangular tubes. The positioning holes are located on the vertical bars of the second rectangular frame, and the first triangular plate is located between the vertical bars of the second rectangular frame and the front and rear crossbars of the vehicle body. The front and rear connecting frames form a closed frame structure through the first and second rectangular frames and the second left and right crossbars, creating multi-directional force support and improving local structural rigidity. The use of hollow rectangular tubes for each component continues the lightweight design. The positioning holes, located on the vertical bars of the second rectangular frame, combined with the reinforcing effect of the first triangular plate, make the connection between the front and rear crossbars and the rear connecting frame more stable, dispersing the impact force transmitted by the wheels and solving the problem of poor impact resistance in existing structures.

[0012] Preferably, the bottom of the left-side bracket is located above the bottom of the first rectangular frame, forming a ground clearance to prevent chassis scratches. By forming a ground clearance, the problem of existing vehicle frames easily scratching the chassis during off-road driving is specifically addressed, improving the vehicle's passability in scenarios such as climbing rocks and crossing trenches, reducing the risk of chassis damage, and ensuring the structural integrity of the vehicle frame.

[0013] Preferably, wheel positioning plates are provided at the bottom of the cavities of the first and second rectangular frames; wheel axle holes are provided through the wheel positioning plates; the wheel axle holes include an upper circular hole and a lower rectangular hole, and one of the second left and right crossbars is connected to the rectangular holes on both sides. The design of the wheel positioning plates and wheel axle holes improves the connection accuracy between the wheel and the frame, ensuring stable force transmission from the wheel to the frame; the second left and right crossbars connected to the rectangular holes on both sides enhance the structural strength around the axle holes, effectively withstanding alternating loads generated by wheel rotation and off-road impacts, preventing deformation of the axle hole area, and improving the reliability of wheel installation.

[0014] Preferably, the wall thickness of the tube on the front connecting frame is 3.0-3.5mm; the wall thickness of the tube on the rear connecting frame is 2.0-2.5mm. By using a thicker tube on the front connecting frame than the rear connecting frame, a differentiated wall thickness design is adopted based on the difference in stress: the front needs to withstand greater loads from steering, engine, and frontal impacts, so a thicker wall ensures strength; the rear experiences relatively less stress, so a thinner wall achieves lightweighting. This optimizes the overall weight while meeting the strength requirements of different parts, balancing "high strength" and "lightweight".

[0015] Preferably, the system also includes a pedal bracket made of aluminum alloy; the pedal bracket is mounted on a first left or right crossbar near the front connecting frame. The aluminum alloy pedal bracket is made of the same material as the frame body, avoiding electrochemical corrosion problems caused by the connection of dissimilar materials, and maintaining lightweight characteristics; the pedal bracket is mounted on the first left or right crossbar, utilizing the existing crossbar structure to bear the force of the pedal, without the need for additional structural reinforcement, thus increasing the number of functional components without significantly increasing the weight, improving ease of use and structural economy.

[0016] Preferably, the vehicle also includes a seat bracket made of aluminum alloy. The seat bracket includes two third left and right crossbars and a seat fixing frame. The two third left and right crossbars are parallel and spaced apart between the two upper front and rear crossbars of the vehicle body. The seat fixing frame is mounted on the two third left and right crossbars. The seat fixing frame includes a symmetrically arranged left seat frame and a right seat frame. Both the left and right seat frames include two spaced-apart seat vertical bars and front and rear seat crossbars connected to the tops of the two first seat vertical bars in the front-rear direction. A left and right seat crossbar is also provided between the two aligned left and right seat vertical bars. Mounting seats are provided at both ends of the front and rear seat crossbars. The aluminum alloy seat bracket continues the lightweight design, avoiding increased vehicle weight. The two third left and right crossbars connect to the front and rear crossbars of the vehicle body, forming a stable support structure. The seat fixing frame is mounted on this structure, effectively distributing the load generated by the occupant's weight, preventing localized stress concentration that could lead to frame deformation, and improving passenger safety and structural stability.

[0017] Preferably, the seat frame is made of a hollow rectangular tube; and the wall thickness of the seat frame is 3.0-3.5mm. The use of a hollow rectangular tube for the seat frame achieves lightweight design while ensuring strength through a wall thickness of 3.0-3.5mm. This allows it to withstand the weight of the occupants and the impact loads generated by off-road bumps, preventing the frame from deforming or breaking. This balances "lightweight" and "high strength" while meeting functional requirements.

[0018] In summary, the advantages of this utility model are:

[0019] Balance between lightweight and high performance: The entire frame is made of aluminum alloy and features a hollow rectangular tube structure, which significantly reduces the weight of the frame and solves the problems of insufficient handling, power performance and passability caused by the excessive weight of existing steel frames. At the same time, through differentiated wall thickness design (such as 3.0-3.5mm for the front connecting frame and 2.0-2.5mm for the rear connecting frame), strength is guaranteed in key stress areas, achieving a precise match between lightweight and high strength.

[0020] Improved structural strength and stability: The "plug-in positioning + welding" connection method, combined with triangular plate reinforcement (first and second reinforcement), significantly enhances the shear and bending resistance of the connection parts, solving the problems of insufficient connection strength and easy deformation and breakage of existing tubular structures; the symmetrical frame design (symmetrical connection frame between the front and rear of the vehicle, symmetrical left and right supports) and multi-directional force-bearing frame structure make the overall frame subjected to balanced forces, improving the resistance to torsion and impact.

[0021] Off-road capability optimization: The bottom of the left bracket is higher than the bottom of the first rectangular frame to create ground clearance, reducing the risk of chassis scraping during off-road driving and specifically addressing the problem of insufficient off-road capability of the existing frame.

[0022] Enhanced functional adaptability and reliability: The wheel alignment plate and special axle hole design, as well as the reasonable layout of the seat bracket and pedal bracket, improve the installation accuracy and load-bearing stability of each component while ensuring lightweight design. This effectively withstands alternating loads and impacts in off-road scenarios, extends the service life of the frame, and ensures safe use.

[0023] Synergistic effect of materials and structure: The all-aluminum alloy material avoids the problem of corrosion between different materials, and the structural design of each component (such as hollow tubes and grid frames) strengthens the force transmission while reducing the amount of material used, achieving a unity of function, performance and economy. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the aluminum alloy frame structure of the beach buggy of this utility model.

[0025] Figure 2 is a structural schematic diagram of the vehicle body connecting frame of this utility model.

[0026] Figure 3 shows the present invention.Figure 2 Enlarged schematic diagram of the connector board.

[0027] Figure 4 is a structural schematic diagram of the front connecting frame and the rear connecting frame of this utility model.

[0028] Figure 5 is a structural schematic diagram of the seat bracket of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Front connecting bracket; 10. Positioning insertion hole; 2. Body connecting bracket; 21. Left side bracket; 211. Front and rear crossbars of the body; 212. Body vertical bar; 213. Connecting plate; 22. Right side bracket; 23. First left and right crossbars; 3. Rear connecting bracket; 31. First rectangular frame; 32. Second rectangular frame; 33. Second left and right crossbars; 34. Wheel positioning plate; 35. Wheel axle hole; 351. Circular hole; 352. Rectangular hole; 4. First reinforcing part; 5. Second reinforcing part; 6. Ground clearance; 7. Pedal bracket; 8. Seat bracket; 81. Third left and right crossbars; 82. Seat fixing bracket; 83. Seat vertical bar; 84. Front and rear crossbars of the seat; 85. Left and right crossbars of the seat; 86. Mounting seat. Detailed Implementation

[0031] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0032] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0033] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 5 As shown, an aluminum alloy frame structure for a beach buggy includes a frame body made of aluminum alloy. The frame body includes a front connecting frame 1, a body connecting frame 2, and a rear connecting frame 3. The front end of the body connecting frame 2 is inserted and positioned onto the front connecting frame 1, and the body connecting frame 2 and the front connecting frame 1 are fixedly connected by welding. A first reinforcing part 4 is provided at the connection between the body connecting frame 2 and the front connecting frame 1. The rear end of the body connecting frame 2 is inserted and positioned onto the rear connecting frame 3, and the body connecting frame 2 and the rear connecting frame 3 are fixedly connected by welding. A second reinforcing part 5 is provided at the connection between the body connecting frame 2 and the rear connecting frame 3. The front connecting frame 1 and the rear connecting frame 3 have the same structure and are symmetrically arranged on the front and rear sides of the body connecting frame 2. The chassis structure uses an aluminum alloy frame body, which significantly reduces weight compared to existing steel frames, improving vehicle handling agility and off-road capability. The "plug-in positioning + welding" connection method improves the assembly precision of the front connecting frame 1, body connecting frame 2, and rear connecting frame 3, reducing stress concentration at the connection points. The first reinforcing part 4 and the second reinforcing part 5 enhance connection strength, solving the problem of insufficient connection strength and easy deformation and breakage in existing tubular structures. The symmetrical arrangement of the front connecting frame 1 and rear connecting frame 3 ensures balanced stress on the chassis, further improving overall structural stability.

[0036] like Figure 2 and Figure 3 As shown, the vehicle body connecting frame 2 includes a left side bracket 21, a right side bracket 22, and two first left and right crossbars 23 inserted between the left side bracket 21 and the right side bracket 22. The first left and right crossbars 23 are fixedly connected to the left side bracket 21 and the right side bracket 22 by welding. The left side bracket 21 and the right side bracket 22 have the same structure and are arranged symmetrically. Both the left side bracket 21 and the right side bracket 22 include two front and rear crossbars 211 and several vehicle body vertical bars 212. The two front and rear crossbars 211 are parallel and aligned vertically. All the vehicle body vertical bars 212 are arranged in a front-to-back interval between the two front and rear crossbars 211. Each front and rear crossbar 211 has a protruding insertion plate 213 at both ends. The front connecting frame 1 and the rear connecting frame 3 are provided with positioning holes 10 that are inserted and cooperate with the insertion plates 213. The above structure enhances the lateral rigidity of the frame and disperses the impact force from both sides during off-road driving. The left bracket 21 and the right bracket 22 adopt a combination of "two front and rear crossbars 211 + body vertical bar 212" to form a grid-like stress structure, which improves the longitudinal torsional resistance. The plug plates 213 at both ends of the front and rear crossbars 211 cooperate with the positioning plug holes 10 of the front connecting frame 1 and the rear connecting frame 3 to further optimize the connection accuracy, reduce welding stress, and solve the problem of insufficient connection strength of the existing tubes.

[0037] like Figure 2 As shown, the bottom of the left bracket 21 is located above the bottom of the first rectangular frame 31, forming a ground clearance 6 to prevent chassis scratches. By creating a height difference from the ground, the problem of existing vehicle frames easily scratching the chassis during off-road driving is specifically addressed, improving the vehicle's passability in scenarios such as climbing rocks and crossing trenches, reducing the risk of chassis damage, and ensuring the integrity of the vehicle frame structure.

[0038] like Figure 2 and Figure 3 As shown, the first left and right crossbars 23, the front and rear crossbars 211, and the body vertical bars 212 are all made of hollow rectangular tubes; the first reinforcing part 4 is a first triangular plate set between the front end of the front and rear crossbars 211 and the front connecting frame 1; the second reinforcing part 5 is a second triangular plate set between the rear end of the front and rear crossbars 211 and the front connecting frame 1. By using hollow rectangular tubes for the first left and right crossbars 23, the front and rear crossbars 211, and the body vertical bars 212, the amount of material used is reduced while ensuring structural strength, thus achieving lightweighting; the first reinforcing part 4 and the second reinforcing part 5 are set as triangular plates, utilizing the stability characteristics of triangles to significantly enhance the shear and bending resistance at the connection points between the body connecting frame 2 and the front connecting frame 1 and the rear connecting frame 3, preventing deformation and breakage of the connection points under bumps or impacts, and improving the durability of the frame.

[0039] like Figures 1 to 4 As shown, both the front connecting frame 1 and the rear connecting frame 3 include a first rectangular frame 31, a second rectangular frame 32, and three second left and right crossbars 33 inserted between the first rectangular frame 31 and the second rectangular frame 32. The second left and right crossbars 33 are fixedly connected to the first rectangular frame 31 and the second rectangular frame 32 by welding. The insertion and fixing methods of the second left and right crossbars 33 are the same as those of the front and rear crossbars 211 of the vehicle body, and will not be described again here. Two crossbars are connected between the vertical bars of the two rectangular frames, and one crossbar is connected between the horizontal bars of the bottom rectangular frame. The first rectangular frame 31 and the second rectangular frame 32 have the same structure and are arranged symmetrically from left to right. The first rectangular frame 31, the second rectangular frame 32, and the second left and right crossbars 33 are all made of hollow rectangular tubes. The positioning insertion hole 10 is set on the vertical bar of the second rectangular frame 32, and the first triangular plate is set between the vertical bar of the second rectangular frame 32 and the front and rear crossbars 211 of the vehicle body. The front connecting frame 1 and the rear connecting frame 3 form a closed frame structure through the first rectangular frame 31, the second rectangular frame 32 and the second left and right crossbars 33, forming multi-directional force support and improving the rigidity of the local structure; each component adopts a hollow rectangular tube, continuing the lightweight design; the positioning insertion hole 10 is set on the vertical bar of the second rectangular frame 32, and combined with the strengthening effect of the first triangular plate, makes the connection between the front and rear crossbars 211 of the vehicle body and the rear connecting frame 3 more stable, disperses the impact force transmitted by the wheels, and solves the problem of poor impact resistance of the existing structure.

[0040] like Figure 3 As shown, a wheel positioning plate 34 is provided at the bottom of the cavity of the first rectangular frame 31 and the second rectangular frame 32; a wheel axle hole 35 is provided through the wheel positioning plate 34; the wheel axle hole 35 includes an upper circular hole 351 and a lower rectangular hole 352, and one of the second left and right crossbars 33 is connected to the rectangular holes 352 on both sides. Through the design of the wheel positioning plate 34 and the wheel axle hole 35, the connection accuracy between the wheel and the frame is improved, ensuring that the force of the wheel is stably transmitted to the frame; the second left and right crossbars 33 are connected to the rectangular holes 352 on both sides, enhancing the structural strength around the axle hole, effectively withstanding the alternating load generated by wheel rotation and off-road impact, avoiding deformation of the axle hole, and improving the reliability of wheel installation.

[0041] like Figure 1 and Figure 3 As shown, the wall thickness of the tube on the front connecting frame 1 is 3.0-3.5mm; the wall thickness of the tube on the rear connecting frame 3 is 2.0-2.5mm. The wall thickness of the front connecting frame 1 is greater than that of the rear connecting frame 3, reflecting a differentiated wall thickness design based on the difference in stress: the front of the vehicle needs to withstand greater loads from steering, engine, and frontal impacts, so a thicker wall ensures strength; the rear of the vehicle experiences relatively less stress, so a thinner wall achieves lightweighting. This design optimizes the overall weight while meeting the strength requirements of different parts, balancing "high strength" and "lightweight".

[0042] like Figure 1 and Figure 2 As shown, it also includes a pedal bracket 7 made of aluminum alloy; the pedal bracket 7 is mounted on a first left and right crossbar 23 near the front connecting frame 1. The aluminum alloy pedal bracket 7 is made of the same material as the frame body, avoiding the electrochemical corrosion problem of connecting dissimilar materials and maintaining lightweight characteristics; the pedal bracket 7 is mounted on the first left and right crossbars 23, utilizing the existing crossbar structure to bear the force of the pedal, without the need for additional reinforcement structure, increasing the number of functional components without significantly increasing the weight, improving ease of use and structural economy.

[0043] like Figure 1 , Figure 2 and Figure 5As shown, it also includes a seat bracket 8 made of aluminum alloy; the seat bracket 8 includes two third left and right crossbars 81 and a seat fixing frame 82; the two third left and right crossbars 81 are parallel and spaced apart between the two front and rear crossbars 211 of the vehicle body located above, and the seat fixing frame 82 is set on the two third left and right crossbars 81; the seat fixing frame 82 includes a symmetrically arranged left seat frame and a right seat frame; both the left seat frame and the right seat frame include two spaced seat vertical bars 83 and a front and rear seat crossbar 84 connected to the top of the two first seat vertical bars 83 in the front and rear direction; and a left and right seat crossbar 85 is also provided between the two aligned left and right seat vertical bars 83; the first seat vertical bars 83, the front and rear seat crossbars 84 and the left and right seat crossbars 85 are all connected by first plugging and then welding, and the resulting grid-shaped structure is more robust and stable. The two ends of the front and rear seat crossbars 84 are provided with mounting seats 86, which facilitate the installation and connection with the seat. The aluminum alloy seat bracket 8 continues the lightweight design, avoiding increasing the overall vehicle weight. Two third left and right crossbars 81 connect to the front and rear crossbars 211 of the vehicle body, forming a stable support structure. The seat fixing frame 82 is mounted on it, effectively distributing the load generated by the passenger's weight, preventing localized stress concentration that could lead to frame deformation, and improving passenger safety and structural stability. The seat bracket 8 is made of hollow rectangular tubing; and the wall thickness of the tubing is 3.0-3.5mm. The use of hollow rectangular tubing in the seat bracket 8 ensures strength while maintaining lightweight design. As a high-frequency load-bearing component, the seat can withstand the weight of the passengers and the impact loads generated by off-road bumps, preventing the bracket from deforming or breaking, thus balancing "lightweight" and "high strength" while meeting functional requirements.

[0044] In summary, the advantages of this utility model are: the use of aluminum alloy material and hollow rectangular tube structure significantly reduces the weight of the frame, improving vehicle handling and off-road capability; the connection method of plug-in positioning and welding, combined with triangular reinforcement, enhances the connection strength and solves the problem of easy deformation and breakage in existing structures; the symmetrical design ensures balanced stress, and the differentiated wall thickness balances lightweighting and strength of key parts; the reasonable ground clearance reduces chassis scratches, and the optimized layout of various functional components improves overall reliability and adaptability.

[0045] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0046] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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 a suitable manner in any 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.

[0047] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An aluminum alloy frame structure for a beach buggy, characterized in that, The vehicle includes a frame body made of aluminum alloy, comprising a front connecting frame (1), a body connecting frame (2), and a rear connecting frame (3). The front end of the body connecting frame (2) is inserted and positioned onto the front connecting frame (1), and the body connecting frame (2) and the front connecting frame (1) are fixedly connected by welding. A first reinforcing part (4) is provided at the connection between the body connecting frame (2) and the front connecting frame (1). The rear end of the body connecting frame (2) is inserted and positioned onto the rear connecting frame (3), and the body connecting frame (2) and the rear connecting frame (3) are fixedly connected by welding. A second reinforcing part (5) is provided at the connection between the body connecting frame (2) and the rear connecting frame (3). The front connecting frame (1) and the rear connecting frame (3) have the same structure and are symmetrically arranged on the front and rear sides of the body connecting frame (2).

2. The ATV aluminum alloy frame structure according to claim 1, characterized in that, The vehicle body connecting frame (2) includes a left side bracket (21), a right side bracket (22), and several first left and right crossbars (23) inserted between the left side bracket (21) and the right side bracket (22). The first left and right crossbars (23) are fixedly connected to the left side bracket (21) and the right side bracket (22) by welding. The left side bracket (21) and the right side bracket (22) have the same structure and are arranged symmetrically. The left side bracket (21) and the right side bracket (22) each include two front and rear crossbars (211) and several vehicle body vertical bars (212). The two front and rear crossbars (211) are parallel and aligned vertically. All the vehicle body vertical bars (212) are arranged in a front-to-back interval between the two front and rear crossbars (211). Each front and rear crossbar (211) has a protruding plug-in plate (213) at both ends. The front connecting frame (1) and the rear connecting frame (3) are provided with positioning holes (10) that are plugged into the plug-in plates (213).

3. The ATV aluminum alloy frame structure according to claim 2, characterized in that, The first left and right crossbars (23), the front and rear crossbars (211), and the body vertical bar (212) are all made of hollow rectangular tubes; the first reinforcing part (4) is a first triangular plate set between the front end of the front and rear crossbars (211) and the front connecting frame (1); the second reinforcing part (5) is a second triangular plate set between the rear end of the front and rear crossbars (211) and the front connecting frame (1).

4. The ATV aluminum alloy frame structure according to claim 3, characterized in that, The front connecting frame (1) and the rear connecting frame (3) include a first rectangular frame (31), a second rectangular frame (32) and several second left and right crossbars (33) inserted between the first rectangular frame (31) and the second rectangular frame (32), and the second left and right crossbars (33) are fixedly connected to the first rectangular frame (31) and the second rectangular frame (32) by welding; the first rectangular frame (31) and the second rectangular frame (32) have the same structure and are arranged symmetrically on the left and right, and the first rectangular frame (31), the second rectangular frame (32) and the second left and right crossbars (33) are all made of hollow rectangular tubes; the positioning hole (10) is set on the vertical bar of the second rectangular frame (32), and the first triangular plate is set between the vertical bar of the second rectangular frame (32) and the front and rear crossbars (211) of the vehicle body.

5. The ATV aluminum alloy frame structure according to claim 4, characterized in that, The bottom of the left support (21) is located above the bottom of the first rectangular frame (31) to form a ground clearance (6) to prevent the chassis from being scratched.

6. The ATV aluminum alloy frame structure according to claim 4, characterized in that, The first rectangular frame (31) and the second rectangular frame (32) are provided with wheel positioning plates (34) at the bottom of their cavities; wheel positioning plates (34) are provided with wheel axle holes (35); wheel axle holes (35) include a circular hole (351) at the top and a rectangular hole (352) at the bottom, and one of the second left and right crossbars (33) is connected to the rectangular holes (352) on both sides.

7. The ATV aluminum alloy frame structure according to claim 4, characterized in that, The wall thickness of the tube on the front connecting frame (1) is 3.0-3.5mm; the wall thickness of the tube on the rear connecting frame (3) is 2.0-2.5mm.

8. The ATV aluminum alloy frame structure according to claim 2, characterized in that, It also includes a pedal bracket (7) made of aluminum alloy material; the pedal bracket (7) is set on a first left and right crossbar (23) near the front connecting frame (1).

9. The ATV aluminum alloy frame structure according to claim 2, characterized in that, It also includes a seat bracket (8) made of aluminum alloy; the seat bracket (8) includes two third left and right crossbars (81) and a seat fixing frame (82); the two third left and right crossbars (81) are parallel and spaced apart between the two front and rear crossbars (211) of the vehicle body located above, and the seat fixing frame (82) is set on the two third left and right crossbars (81); the seat fixing frame (82) includes a symmetrically arranged left seat frame and a right seat frame; the left seat frame and the right seat frame each include two spaced seat vertical bars (83) and a front and rear seat crossbar (84) connected to the top of the two first seat vertical bars (83) in the front and rear direction; and a left and right seat crossbar (85) is also provided between the two aligned left and right seat vertical bars (83); the rear ends of the front and rear seat crossbars (84) are provided with mounting seats (86).

10. The ATV aluminum alloy frame structure according to claim 9, characterized in that, The seat support (8) is made of a hollow rectangular tube; and the wall thickness of the seat support (8) is 3.0-3.5mm.

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