Cross-country motorcycle frame

Abstract

The utility model belongs to the technical field of motorcycle frames, and particularly relates to a cross-country motorcycle frame which comprises a vertical pipe, a U-shaped upper beam pipe is fixed on one side of the vertical pipe, the U-shaped upper beam pipe is integrally formed and manufactured, the two ends of the U-shaped upper beam pipe are both fixed to the vertical pipe, and the two ends of the U-shaped upper beam pipe are fixed to the vertical pipe. Two symmetrical lower beam pipes are fixed to the outer wall of the vertical pipe and located above the U-shaped upper beam pipe, a cross beam pipe is fixed to the bottom ends of the lower beam pipes, a first supporting pipe fixed to the cross beam pipe is fixed to the outer wall of the U-shaped upper beam pipe, and a second supporting pipe fixed to the first supporting pipe is fixed to the outer wall of the U-shaped upper beam pipe. A third reinforcing pipe fixed by the U-shaped upper beam pipe is fixed on the outer wall of the lower beam pipe, and a first reinforcing pipe is fixed between the outer walls of the U-shaped upper beam pipe; the strength and the rigidity of the frame can be effectively improved, the structure and the shape of the frame are kept unchanged, and the reliability and the stability of the off-road motorcycle frame are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of motorcycle frames, and in particular relates to an off-road motorcycle frame. Background Art

[0002] The frame, an essential core component of any motorcycle, has a profound impact on various parameters and overall performance. Therefore, frame selection and design are crucial. Off-road motorcycles, with their powerful power output and stylish, avant-garde styling, are highly sought after by young cycling enthusiasts. Given that off-road motorcycles often navigate winding mountain roads at breakneck speeds and carry unconventional loads, these motorcycles undoubtedly place even more stringent standards and requirements on frame design.

[0003] Problems with existing technologies:

[0004] Current motorcycle frames generally adopt a single-beam design. Although this structure is simple and clear, its inherent limitation is that its overall strength is relatively weak. In off-road riding scenarios, faced with rugged and bumpy road conditions, the stress and impact force that the single-beam frame is subjected to increase significantly, far exceeding the load range under normal use conditions. Therefore, this type of frame structure is unable to cope with off-road conditions. Not only is it easily damaged by excessive stress, it also greatly weakens the overall safety and stability of the motorcycle, posing a potential safety hazard to the rider. Utility Model Content

[0005] The purpose of the utility model is to provide an off-road motorcycle frame, which can effectively increase the strength and rigidity of the frame, keep its structure and shape unchanged, and effectively improve the reliability and stability of the off-road motorcycle frame.

[0006] The technical solutions adopted by this utility model are as follows:

[0007] A cross-country motorcycle frame comprises a standpipe, a U-shaped upper beam tube is fixed to one side of the standpipe, the U-shaped upper beam tube is made of one piece, both ends of the U-shaped upper beam tube are fixed to the standpipe, two symmetrical lower beam tubes are fixed to the outer wall of the standpipe and located above the U-shaped upper beam tube, a cross beam tube is fixed to the bottom end of the lower beam tube, a first support tube fixed to the cross beam tube is fixed to the outer wall of the U-shaped upper beam tube, a second support tube fixed to the first support tube is fixed to the outer wall of the U-shaped upper beam tube, a third reinforcement tube fixed to the U-shaped upper beam tube is fixed to the outer wall of the lower beam tube, a first reinforcement tube is fixed between the outer walls of the U-shaped upper beam tube, a fuel tank support tube fixed to the standpipe is fixed to the middle of the outer wall of the first reinforcement tube, and a plurality of engine fixing ears are fixed to an equidistant array on the bottom outer wall of the cross beam tube.

[0008] The distance between the connection point between the second support tube and the first support tube and the bottom end of the first support tube is 50 mm.

[0009] A second reinforcement tube for fixing the riser is fixed in the middle of the outer wall of the first reinforcement tube and below the oil tank support tube.

[0010] Two seat cushion mounting plates are fixed between the outer walls of the U-shaped upper beam tube and on one side of the first reinforcement tube.

[0011] The inner sides of the oil tank support tube, the lower beam tube, the first support tube, the second support tube and the cross beam tube are all provided with reinforcing ribs.

[0012] A fourth reinforcing tube fixed to the U-shaped upper beam tube is fixed to the middle outer wall of the first supporting tube, and the fourth reinforcing tube passes through the outer wall of the second supporting tube.

[0013] The technical effects achieved by this utility model are:

[0014] The U-shaped upper beam tube and the U-shaped upper beam tube are connected to form a stable triangle, thereby improving the stability of the motorcycle rear wheel installation and improving the stability and strength of the frame. The third reinforcing tube is connected to the lower beam tube and the U-shaped upper beam tube to form a stable triangle. The third reinforcing tube is connected to the cross beam tube and the U-shaped upper beam tube to form a stable triangle, so that the various components that make up the frame form a plurality of approximately triangular structures with good structural stability. The arrangement of multiple engine fixing ears 13 can form a protective barrier, fixing the engine between the two rows of engine fixing ears, which can effectively protect the engine and prevent the rider's legs from accidentally touching the engine and being burned during riding. It is more practical, effectively increases the strength and rigidity of the frame, keeps its structure and shape unchanged, and effectively improves the reliability and stability of the off-road motorcycle frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0016] Figure 2 This is a side view schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 3 This is a top-down perspective structural diagram of the present invention;

[0018] Figure 4 It is a schematic diagram of the cutaway structure of the lower beam tube of the present utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0020] 1. Vertical tube; 2. U-shaped upper beam tube; 3. First reinforcement tube; 4. Second reinforcement tube; 5. Fuel tank support tube; 6. Lower beam tube; 7. First support tube; 8. Second support tube; 9. Cross beam tube; 10. Third reinforcement tube; 11. Fourth reinforcement tube; 12. Seat mounting plate; 13. Engine fixing ear. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0022] like Figures 1-4 The U-shaped upper beam tube 2 is fixed to one side of the vertical tube 1, and the U-shaped upper beam tube 2 is integrally formed. The U-shaped upper beam tube 2 is made of 6061 aluminum alloy. The integrally formed U-shaped upper beam tube 2 improves the strength of the frame. Both ends of the U-shaped upper beam tube 2 are fixed to the vertical tube 1, and two symmetrical lower beam tubes 6 are fixed to the outer wall of the vertical tube 1 and located above the U-shaped upper beam tube 2. A cross beam tube 9 is fixed to the bottom end of the lower beam tube 6. A first supporting tube 7 fixed to the cross beam tube 9 is fixed to the outer wall of the U-shaped upper beam tube 2, and a second supporting tube 8 fixed to the outer wall of the U-shaped upper beam tube 2 is fixed to the first supporting tube 7. The arrangement of the first supporting tube 7 and the second supporting tube 8 forms a stable triangle with the U-shaped upper beam tube 2, which improves the stability of the installation of the rear wheel of the motorcycle and can further improve the stability and strength of the frame. A third reinforcing tube 10 fixed to the U-shaped upper beam tube 2 is fixed to the outer wall of the lower beam tube 6. The connection between the three reinforcing tubes 10 and the lower beam tube 6 and the U-shaped upper beam tube 2 forms a stable triangle. The connection between the third reinforcing tube 10 and the cross beam tube 9 and the U-shaped upper beam tube 2 also forms a stable triangle, which increases the connection strength of the lower beam tube 6 and the cross beam tube 9. A first reinforcing tube 3 is fixed between the outer walls of the U-shaped upper beam tube 2. The provided first reinforcing tube 3 improves the strength of the U-shaped upper beam tube 2 and avoids deformation. It is more practical. The middle part of the outer wall of the first reinforcing tube 3 is fixed with a fuel tank support tube 5 fixed to the vertical pipe 1. The arrangement of the fuel tank support tube 5 facilitates the installation and fixation of the fuel tank. A plurality of engine fixing ears 13 are fixed to the bottom outer wall of the cross beam tube 9 in an equidistant array. A fourth reinforcing tube 11 fixed to the U-shaped upper beam tube 2 is fixed to the middle outer wall of the first support tube 7, and the fourth reinforcing tube 11 passes through the outer wall of the second support tube 8. The second reinforcing tube 4 fixed to the vertical pipe 1 is fixed to the middle part of the outer wall of the first reinforcing tube 3 and below the fuel tank support tube 5.

[0023] According to the above structure, the strength and rigidity of the frame are effectively increased, its structure and shape are kept unchanged, and the reliability and stability of the off-road motorcycle frame are effectively improved. The setting of multiple engine fixing ears 13 can form a protective barrier, fixing the engine between two rows of engine fixing ears 13, which can effectively protect the engine and prevent the rider's legs from accidentally touching the engine and being burned during riding, which is more practical; the setting of the fourth reinforcement tube 11 further improves the installation strength and stability of the first support tube 7 and the second support tube 8; the setting of the second reinforcement tube 4 forms a triangle with the fuel tank support tube 5 and the standpipe 1, further improving the stability of the frame and the stability of the fuel tank support.

[0024] like Figure 1-Figure 3 As shown, the distance between the connection point between the second support tube 8 and the first support tube 7 and the bottom end of the first support tube 7 is 50 mm, which avoids affecting the installation of subsequent wheels and is more practical.

[0025] like Figure 1 and Figure 3 As shown, two seat cushion mounting plates 12 are fixed between the outer walls of the U-shaped upper beam tube 2 and on one side of the first reinforcement tube 3, which facilitates the installation of the vehicle seat and makes the equipment more complete.

[0026] like Figures 1-4 As shown, the inner sides of the fuel tank support tube 5, the lower beam tube 6, the first support tube 7, the second support tube 8 and the cross beam tube 9 are all provided with reinforcing ribs;

[0027] According to the above structure, the strength of the fuel tank support tube 5, the lower beam tube 6, the first support tube 7, the second support tube 8 and the cross beam tube 9 is improved, making them less likely to deform, thereby also improving the stability and strength of the frame.

[0028] The working principle of the present invention is as follows: the setting of the first support tube 7 and the second support tube 8 forms a stable triangle with the U-shaped upper beam tube 2, which improves the stability of the motorcycle rear wheel installation and can further improve the stability and strength of the frame. The connection between the third reinforcement tube 10, the lower beam tube 6 and the U-shaped upper beam tube 2 forms a stable triangle. The connection between the third reinforcement tube 10, the cross beam tube 9 and the U-shaped upper beam tube 2 also forms a stable triangle, which increases the connection strength of the lower beam tube 6 and the cross beam tube 9. The setting of the second reinforcement tube 4 forms a triangle with the fuel tank support tube 5 and the standpipe 1, further improving the frame stability and the stability of the fuel tank support. The setting of multiple engine fixing ears 13 can form a protective barrier, fixing the engine between the two rows of engine fixing ears 13, which can effectively protect the engine and prevent the rider's legs from accidentally touching the engine and being burned during riding. It is more practical, effectively increases the strength and rigidity of the frame, keeps its structure and shape unchanged, and effectively improves the reliability and stability of the off-road motorcycle frame.

[0029] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. An off-road motorcycle frame, comprising a seat tube (1), characterized in that: A U-shaped upper beam tube (2) is fixed on one side of the vertical tube (1), and the U-shaped upper beam tube (2) is integrally formed. Both ends of the U-shaped upper beam tube (2) are fixed to the vertical tube (1). Two symmetrical lower beam tubes (6) are fixed to the outer wall of the vertical tube (1) and located above the U-shaped upper beam tube (2). A cross beam tube (9) is fixed to the bottom end of the lower beam tube (6). A first support tube (7) fixed to the cross beam tube (9) is fixed to the outer wall of the U-shaped upper beam tube (2). A second support tube (8) fixed to the first support tube (7) is fixed to the outer wall of the beam tube (2); a third reinforcement tube (10) fixed to the U-shaped upper beam tube (2) is fixed to the outer wall of the lower beam tube (6); a first reinforcement tube (3) is fixed between the outer walls of the U-shaped upper beam tube (2); a fuel tank support tube (5) fixed to the vertical tube (1) is fixed to the middle of the outer wall of the first reinforcement tube (3); and a plurality of engine fixing ears (13) are fixed in an equidistant array on the bottom outer wall of the cross beam tube (9).

2. The off-road motorcycle frame according to claim 1, characterized in that: The distance between the connection point between the second support tube (8) and the first support tube (7) and the bottom end of the first support tube (7) is 50 mm.

3. The off-road motorcycle frame according to claim 1, characterized in that: A second reinforcement tube (4) fixed to the standpipe (1) is fixed in the middle of the outer wall of the first reinforcement tube (3) and below the oil tank support tube (5).

4. The off-road motorcycle frame according to claim 1, characterized in that: Two seat cushion mounting plates (12) are fixed between the outer walls of the U-shaped upper beam tube (2) and on one side of the first reinforcement tube (3).

5. The off-road motorcycle frame according to claim 1, characterized in that: Reinforcement ribs are provided on the inner sides of the oil tank support tube (5), the lower beam tube (6), the first support tube (7), the second support tube (8) and the cross beam tube (9).

6. The off-road motorcycle frame according to claim 1, characterized in that: A fourth reinforcement tube (11) fixed to the U-shaped upper beam tube (2) is fixed to the middle outer wall of the first support tube (7), and the fourth reinforcement tube (11) passes through the outer wall of the second support tube (8).

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