Truss type frame of electric bicycle

Abstract

The invention relates to the field of electric bicycles, and discloses a truss type frame of an electric bicycle, the truss type frame comprises a main frame and a main cross beam, the outer wall of the main frame is fixedly connected with a connecting frame, the outer wall of the main frame is fixedly connected with a side beam, the outer wall of the main cross beam is slidably connected with a cylinder, and the outer wall of the cylinder is fixedly connected with a first welding ring; a connecting column is rotatably connected to the interior of the first welding ring, a second welding ring is fixedly connected to the outer wall of the connecting column, a sliding groove is formed in the inner wall of the second welding ring, a clamping groove is formed in the outer wall of the cylinder, and a first bolt is in threaded connection with the interior of the first welding ring. Due to the fact that the first welding rings, the second welding rings and the first inclined protrusions are welded to the side beams together, wrapping type welding is formed on the side beams, more contact points and connecting media exist between the main cross beam and the side beams, the possibility of gaps and looseness of the connecting portions is effectively reduced, and the stability of the frame structure is improved on the whole.

Description

Technical Field

[0001] The present invention relates to the technical field of electric bicycles, in particular to a truss frame of an electric bicycle. Background Art

[0002] With the acceleration of urbanization, people's demand for short-distance travel in cities is increasing. Electric bicycles, with their convenience, flexibility, and affordability, have become an important choice for short-distance travel. To better meet users' needs in different road conditions and usage scenarios, the frame structure of electric bicycles needs to be continuously optimized, and truss frames have emerged as a result.

[0003] In the prior art, during the installation and welding process of the main crossbeam, only the two ends of the main crossbeam are welded to the outsides of the two side beams. The range of the welding points is small, and the small range of the welding points will make the connection between the main crossbeam and the side beams not tight and stable enough. During the driving process of the vehicle, their ability to work together is limited, and they cannot effectively bear and transmit loads together, resulting in a decline in the overall performance of the frame. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a truss-type frame for an electric bicycle, which solves the problem in the existing technology that the two ends of the main beam are welded to the outside of the two side beams, the welding point range is small, the connection between the main beam and the side beams is not tight and stable enough, and they cannot effectively bear and transmit loads together, resulting in a decrease in the overall performance of the frame.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The outer wall of the cylinder is fixedly connected to a welding ring 1, and the interior of the welding ring 1 is rotatably connected to a connecting column, the outer wall of the connecting column is fixedly connected to a welding ring 2, and the inner wall of the welding ring 2 is provided with a sliding groove, and the outer wall of the cylinder is provided with a clamping groove, the inner wall of the welding ring 1 is connected to a bolt 1, the outer wall of the bolt 1 is threadedly connected to the interior of the cylinder, the outer wall of the bolt 1 is threadedly connected to the interior of the main cross beam, the inner wall of the cylinder is connected to the bolt 2, and the outer wall of the bolt 2 is threadedly connected to the interior of the main cross beam, the outer wall of the welding ring 2 is fixedly connected to an oblique convex, a fixing component is provided inside the welding ring 2, and the outer wall of the main cross beam is provided with a buffer component.

[0006] Preferably, the fixing assembly includes a sliding column, the outer wall of the sliding column is slidably connected to the inside of the welding ring 2, the outer wall of the sliding column is fixedly connected to a limiting plate, the outer wall of the sliding column is fixedly connected to a sloped block, the outer wall of the sloped block is slidably connected to the inner wall of the sliding groove, the outer wall of the sloped block is slidably connected to the outer wall of the cylinder, and the outer wall of the sloped block is slidably connected to the inner wall of the slot.

[0007] Preferably, the fixing assembly further comprises a spring 1, one end of the spring 1 being fixedly connected to the outer wall of the inclined block, and the other end of the spring 1 being fixedly connected to the inner wall of the sliding groove.

[0008] Preferably, the buffer assembly includes a fixed block ring, the inner wall of the fixed block ring is fixedly connected to the outer wall of the main beam, one end of the fixed block ring is fixedly connected to spring 2, the other end of spring 2 is fixedly connected to a sliding cylinder, the outer wall of the sliding cylinder is slidably connected to the inner wall of the main beam, and the outer wall of spring 2 is slidably connected to the outer wall of the main beam.

[0009] Preferably, the buffer assembly also includes a fixed block 1, the outer wall of the fixed block 1 is fixedly connected to the outer wall of the sliding cylinder, the outer wall of the fixed block 1 is rotatably connected to a fixed seat 1, one end of the fixed seat 1 is fixedly connected to an oil cylinder, the other end of the oil cylinder is fixedly connected to a fixed seat 2, the inner wall of the fixed seat 2 is rotatably connected to a fixed block 2, the outer wall of the fixed block 2 is fixedly connected to a round block, and the outer wall of the round block is fixedly connected to the outer wall of the side beam.

[0010] Preferably, the buffer assembly further includes a spring three, one end of the spring three is fixedly connected to the outer wall of the fixing seat one, and the other end of the spring three is fixedly connected to the outer wall of the fixing seat two.

[0011] Preferably, the outer wall of the side beam is fixedly connected to the front support frame, the other end of the front support frame is fixedly connected to the outer wall of the connecting frame, the outer wall of the main frame is fixedly connected to the front mounting tube, and the inner wall of the front mounting tube is fixedly connected to the mounting column.

[0012] Preferably, the outer wall of the side beam is fixedly connected to the rear support frame, the outer wall of the side beam is fixedly connected to the middle support frame, and the outer wall of the middle support frame is fixedly connected to the outer wall of the connecting frame.

[0013] Preferably, the outer wall of the side beam is fixedly connected to a seat cushion support frame, and the outer wall of the seat cushion support frame is fixedly connected to a diagonal brace 1.

[0014] A method for installing a truss frame of an electric bicycle comprises the following steps: S1: During installation, first fix the main frame and then weld the connecting frame to the main frame. After the connecting frame is welded, weld the side beam to the outer wall of the main frame, then weld one end of the front support frame to the outer wall of the side beam, and weld the other end to the outer wall of the connecting frame, then weld the rear support frame to one end of the side beam, and then weld the middle support frame. Finally, weld the seat cushion support frame welded to the diagonal brace to the side beam to complete the installation of the main frame of the frame.

[0015] S2: After completing the installation of the main frame of the frame, the main crossbeam needs to be installed and welded. At this time, the fixed block ring, spring 2 and sliding cylinder are first inserted into the outer wall of the main crossbeam, and then the fixed block ring is welded and fixed. Then the cylinder is slid into the outer wall of the main crossbeam, and then the welding ring 1, cylinder and main crossbeam are fixed by bolt 1. Then the cylinder and main crossbeam are fixed by bolt 2. After the fixation is completed, the welding ring 1 is driven by the main crossbeam to make the welding ring 1 fit with the outer wall of the side beam, and then the welding ring 2 is rotated to make the welding ring 2 drive the connecting column to rotate. Inside the welding ring one, during the movement of the welding ring two, the welding ring two will drive the inclined surface block to move and slide on the outer wall of the cylinder. During the sliding of the inclined surface block on the outer wall of the cylinder, the cylinder will be forced to move outward and cause the sliding column to slide inside the welding ring two while causing the spring one to be forced to contract. When the outer wall of the inclined surface block slides to the inner wall of the slot opened on the outer wall of the cylinder, the preliminary fixation of the welding ring two is completed, and then the pre-fixation of the main beam is completed. After that, the welding ring two, the welding ring one and the inclined protrusion can be welded together with the side beam to complete the installation of the main beam.

[0016] S3: After installing the main crossbeam, fit the round block to the outer wall of the main crossbeam, and then weld the round block to fix the buffer assembly, thereby completing the installation of the entire frame.

[0017] The present invention provides a truss frame for an electric bicycle, which has the following beneficial effects: 1. In the present invention, since welding ring 1, welding ring 2 and oblique protrusion 1 are welded together with the side beam, a wrap-around welding is formed on the side beam, so that there are more contact points and connecting media between the main cross beam and the side beam, effectively reducing the gap and looseness possibility of the connection part, and improving the stability of the frame structure as a whole.

[0018] 2. The present invention can pre-fix the main beam through the fixing assembly, reducing the time and workload for adjusting the position of the main beam during assembly. Workers do not need to spend a lot of time aligning and determining the position of the main beam. They only need to preliminarily fix it through the fixing assembly and then perform subsequent welding operations, which helps to improve production efficiency and reduce labor intensity.

[0019] 3. The buffer assembly of the present invention adopts a modular design. There is no need to install and debug multiple parts one by one. The buffer assembly only needs to be placed in the installation position of the quasi-frame and fixed, which reduces assembly time and workload and improves production efficiency.

[0020] 4. The bicycle frame of the present invention buffers the lateral force of the frame through the mutual cooperation of the oil cylinder and the spring three. The buffering of the oil cylinder and the spring three can timely absorb and disperse the lateral force of the frame, effectively reducing the roll and shaking of the frame, making it easier for the rider to maintain balance. At the same time, it can also reduce structural stress, protect the frame and components, and improve riding comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the local structure of the main beam of the present invention; Figure 3 This is a schematic diagram of the partial structure of the welding ring 2 of the present invention; Figure 4 This is a partial structural diagram of a welding ring according to the present invention; Figure 5 for Figure 4 A in the middle is an enlarged schematic diagram; Figure 6 It is a schematic diagram of the partial structure of the rear support frame of the present invention.

[0022] Among them, 1. Main frame; 2. Side beam; 3. Connecting frame; 4. Main crossbeam; 5. Cylinder; 6. Welding ring 1; 7. Connecting column; 8. Welding ring 2; 9. Sliding groove; 10. Slot; 11. Bolt 1; 12. Bolt 2; 13. Sliding column; 14. Limiting plate; 15. Inclined block; 16. Spring 1; 17. Fixed block ring; 18. Spring 2; 19. Sliding cylinder; 20. Fixed block 1; 21. Fixed seat 1; 22. Cylinder; 23. Spring 3; 24. Fixed seat 2; 25. Fixed block 2; 26. Round block; 27. Oblique convex; 28. Front mounting cylinder; 29. Mounting column; 30. Front support frame; 31. Rear support frame; 32. Seat support frame; 33. Diagonal support 1; 34. Middle support frame. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Please see the attached Figure 1 - Attachment Figure 5An embodiment of the present invention provides a truss frame of an electric bicycle, comprising a main frame 1 and a main crossbeam 4, wherein the outer wall of the main frame 1 is fixedly connected to a connecting frame 3, the outer wall of the main frame 1 is fixedly connected to a side beam 2, the outer wall of the main crossbeam 4 is slidably connected to a cylinder 5, the outer wall of the cylinder 5 is fixedly connected to a welding ring 1 6, the interior of the welding ring 1 6 is rotatably connected to a connecting column 7, the outer wall of the connecting column 7 is fixedly connected to a welding ring 2 8, the inner wall of the welding ring 2 8 is provided with a sliding groove 9, the outer wall of the cylinder 5 is provided with a clamping groove 10, the inner wall of the welding ring 1 6 is threadedly connected to a bolt 11, the outer wall of the bolt 11 is threadedly connected to the interior of the cylinder 5, the outer wall of the bolt 11 is threadedly connected to the interior of the main crossbeam 4, the inner wall of the cylinder 5 is threadedly connected to a bolt 2 12, the outer wall of the bolt 2 12 is threadedly connected to the interior of the main crossbeam 4, the outer wall of the welding ring 2 8 is fixedly connected to an oblique protrusion 27, the interior of the welding ring 2 8 is provided with a fixing component, and the outer wall of the main crossbeam 4 is provided with a buffer component.

[0025] Specifically, the main crossbeam 4 and its connecting components of the vehicle frame adopt a modular design, allowing them to be installed before the vehicle frame is installed. Specifically, the cylinder 5 is slid into the outer wall of the main crossbeam 4, and then the welding ring 1 6, cylinder 5, and main crossbeam 4 are fixed with bolts 11. The cylinder 5 and main crossbeam 4 are then fixed with bolts 2 12. After that, the main crossbeam 4 and its connecting components can be pre-installed using the fixing assembly. After fixing, the assembled main crossbeam 4 can be pre-fixed using the fixing assembly, and finally, the welding ring 2 8, welding ring 1 6, and inclined protrusion 27 are welded to the side beam 2, thereby completing the welding installation of the main crossbeam 4. By welding welding ring 1 6, welding ring 2 8, and oblique projection 27 to side sill 2, a wrap-around weld is formed around side sill 2. This increases the weld length between main crossbeam 4 and side sill 2, creating more contact points and connecting media between them. This allows for a tighter connection between the two, effectively reducing gaps and looseness at the connection points, and overall enhancing the stability of the frame structure. The buffer assembly is used to filter vibrations, improve riding comfort, protect vehicle components, and enhance vehicle handling performance.

[0026] Please see the attached Figure 3 - Attachment Figure 5 The fixed component includes a sliding column 13, the outer wall of the sliding column 13 is slidably connected to the inside of the welding ring 2 8, the outer wall of the sliding column 13 is fixedly connected to the limiting plate 14, the outer wall of the sliding column 13 is fixedly connected with a sloped block 15, the outer wall of the sloped block 15 is slidably connected to the inner wall of the sliding groove 9, the outer wall of the sloped block 15 is slidably connected to the outer wall of the cylinder 5, and the outer wall of the sloped block 15 is slidably connected to the inner wall of the slot 10; the fixed component also includes a spring 16, one end of the spring 16 is fixedly connected to the outer wall of the sloped block 15, and the other end of the spring 16 is fixedly connected to the inner wall of the sliding groove 9.

[0027] Specifically, the assembled main beam 4 can be pre-fixed by the fixing component. Specifically, the main beam 4 drives the welding ring 1 6 to fit the welding ring 1 6 with the outer wall of the side beam 2, and the rotating welding ring 2 8 causes the welding ring 2 8 to drive the connecting column 7 to rotate inside the welding ring 1 6. During the movement of the welding ring 2 8, the welding ring 2 8 will drive the inclined surface block 15 to move and slide on the outer wall of the cylinder 5. During the sliding of the inclined surface block 15 on the outer wall of the cylinder 5, the cylinder 5 will be forced to move outward and cause the sliding column 13 to slide inside the welding ring 2 8 while causing the spring 16 to be forced to contract. When the outer wall of the inclined surface block 15 slides to the inner wall of the slot 10 opened on the outer wall of the cylinder 5, the preliminary fixation of the welding ring 2 8 is completed, and then the pre-fixation of the main beam 4 is completed. Afterwards, welding ring 2 8, welding ring 1 6 and oblique protrusion 27 can be welded together with side beam 2 to complete the installation of main crossbeam 4. The main crossbeam 4 can be pre-fixed by fixing components, which reduces the time and workload for adjusting the position of main crossbeam 4 during assembly. Workers do not need to spend a lot of time to align and determine the position of main crossbeam 4. They only need to preliminarily fix it through fixing components and then perform subsequent welding operations, which helps to improve production efficiency and reduce labor intensity.

[0028] Please see the attached Figure 1 - Attachment Figure 2 The buffer assembly includes a fixed block ring 17, the inner wall of the fixed block ring 17 is fixedly connected to the outer wall of the main beam 4, one end of the fixed block ring 17 is fixedly connected to a spring 2 18, the other end of the spring 2 18 is fixedly connected to a sliding cylinder 19, the outer wall of the sliding cylinder 19 is slidably connected to the inner wall of the main beam 4, and the outer wall of the spring 2 18 is slidably connected to the outer wall of the main beam 4; the buffer assembly also includes a fixed block 20, the outer wall of the fixed block 20 is fixedly connected to the outer wall of the sliding cylinder 19, and the outer wall of the fixed block 20 is rotatably connected It is connected to a fixed seat 1 21, one end of which is fixedly connected to an oil cylinder 22, the other end of which is fixedly connected to a fixed seat 2 24, the inner wall of the fixed seat 24 is rotatably connected to a fixed block 25, the outer wall of the fixed block 25 is fixedly connected to a round block 26, and the outer wall of the round block 26 is fixedly connected to the outer wall of the side beam 2; the buffer assembly also includes a spring 3 23, one end of the spring 3 23 is fixedly connected to the outer wall of the fixed seat 1 21, and the other end of the spring 3 23 is fixedly connected to the outer wall of the fixed seat 2 24.

[0029] Specifically, the buffer assembly adopts a modular design. During installation, the fixing block ring 17, spring 2 18, and sliding cylinder 19 are inserted into the outer wall of the main crossbeam 4, and then the fixing block ring 17 is welded and fixed. After the main crossbeam 4 is installed, the round block 26 is aligned with the outer wall of the main crossbeam 4, and then the round block 26 is welded to complete the installation of the buffer assembly. There is no need to install and debug multiple parts one by one. The buffer assembly only needs to be placed in the installation position of the frame and fixed, which reduces assembly time and workload and improves production efficiency. The bicycle frame buffers the lateral force of the frame through the interaction between the oil cylinder 22 and the spring 3 23. The buffering of the oil cylinder 22 and the spring 3 23 can timely absorb and disperse the lateral force of the frame, effectively reducing the roll and sway of the frame, making it easier for the rider to maintain balance. At the same time, it can also reduce structural stress, protect the frame and components, and improve riding comfort.

[0030] Please see the attached Figure 1 and attached Figure 6 The outer wall of the side beam 2 is fixedly connected to the front support frame 30, the other end of the front support frame 30 is fixedly connected to the outer wall of the connecting frame 3, the outer wall of the main frame 1 is fixedly connected to the front mounting tube 28, and the inner wall of the front mounting tube 28 is fixedly connected to the mounting column 29; the outer wall of the side beam 2 is fixedly connected to the rear support frame 31, the outer wall of the side beam 2 is fixedly connected to the middle support frame 34, and the outer wall of the middle support frame 34 is fixedly connected to the outer wall of the connecting frame 3; the outer wall of the side beam 2 is fixedly connected to the seat cushion support frame 32, and the outer wall of the seat cushion support frame 32 is fixedly connected to the diagonal brace 33.

[0031] Specifically, the outer wall of the side beam 2 is fixedly connected to a front support frame 30, and the other end of the front support frame 30 is fixedly connected to the outer wall of the connecting frame 3, which is used to bear part of the weight of the front part of the electric bicycle, and can play a role in connecting and bearing the front part of the frame. The front mounting tube 28 and the mounting column 29 are used to be connected to the steering mechanism of the handlebar. The middle support frame 34 is used to bear part of the weight of the middle part of the electric bicycle, so that the frame of the electric bicycle forms a complete and stable structure, ensuring that the vehicle will not be excessively twisted or deformed during driving. The seat cushion support frame 32 is used to provide direct support for the seat cushion, so that the seat cushion can be maintained at a suitable height and angle, providing a comfortable sitting posture for the rider.

[0032] A method for installing a truss frame of an electric bicycle comprises the following steps: S1: During installation, first fix the main frame 1 and then weld the connecting frame 3 to the main frame 1. After welding the connecting frame 3, weld the side beam 2 to the outer wall of the main frame 1. Then weld one end of the front support frame 30 to the outer wall of the side beam 2, and weld the other end to the outer wall of the connecting frame 3. Then weld the rear support frame 31 to one end of the side beam 2, and then weld the middle support frame 34. Finally, weld the seat cushion support frame 32 welded to the diagonal brace 33 to the side beam 2 to complete the installation of the main frame of the frame.

[0033] S2: After completing the installation of the main frame of the vehicle frame, the main crossbeam 4 needs to be installed and welded. At this time, the fixing block ring 17, the spring 2 18 and the sliding cylinder 19 are first inserted into the outer wall of the main crossbeam 4, and then the fixing block ring 17 is welded and fixed. Then the cylinder 5 is slid into the outer wall of the main crossbeam 4, and then the welding ring 16, the cylinder 5 and the main crossbeam 4 are fixed by the bolt 11. Then, the cylinder 5 and the main crossbeam 4 are fixed by the bolt 2 12. After the fixation is completed, the welding ring 16 is driven by the main crossbeam 4 to make the welding ring 16 fit with the outer wall of the side beam 2, and then the welding ring 2 8 is rotated to make the welding ring 2 8 drive the connecting column 7 to rotate. Inside the welding ring 1 6, during the movement of the welding ring 2 8, the welding ring 2 8 will drive the inclined surface block 15 to move and slide on the outer wall of the cylinder 5. During the sliding of the inclined surface block 15 on the outer wall of the cylinder 5, the cylinder 5 will be forced to move outward and cause the sliding column 13 to slide inside the welding ring 2 8 while causing the spring 16 to be forced to contract. When the outer wall of the inclined surface block 15 slides to the inner wall of the card groove 10 opened on the outer wall of the cylinder 5, the preliminary fixation of the welding ring 2 8 is completed, and then the pre-fixation of the main crossbeam 4 is completed. After that, the welding ring 2 8, the welding ring 1 6 and the inclined protrusion 27 can be welded together with the side beam 2 to complete the installation of the main crossbeam 4.

[0034] S3: After the main crossbeam 4 is installed, the round block 26 is fitted to the outer wall of the main crossbeam 4, and then the round block 26 is welded to complete the fixation of the buffer assembly, thereby completing the installation of the entire frame.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A truss frame of an electric bicycle, comprising a main frame (1) and a main crossbeam (4), characterized in that: The outer wall of the main frame (1) is fixedly connected to a connecting frame (3), the outer wall of the main frame (1) is fixedly connected to a side beam (2), the outer wall of the main cross beam (4) is slidably connected to a cylinder (5), the outer wall of the cylinder (5) is fixedly connected to a welding ring (6), the inner part of the welding ring (6) is rotatably connected to a connecting column (7), the outer wall of the connecting column (7) is fixedly connected to a welding ring (8), the inner wall of the welding ring (8) is provided with a sliding groove (9), the outer wall of the cylinder (5) is provided with a clamping groove (10), the welding ring (1) is fixedly connected to a connecting column (7), the outer wall of the connecting column (7) is fixedly connected to a welding ring (8), the inner wall of the welding ring (8) is provided with a sliding groove (9), the outer wall of the cylinder (5) is provided with a clamping groove (10), the welding ring (1) is fixedly connected to a connecting column (7), the inner wall of the connecting column (7) is provided with a sliding groove (9), the outer wall of the cylinder (5) is provided with a clamping groove (10), the inner wall of the welding ring (1) is provided with a sliding groove (9), the inner wall of the welding ring (1) is provided with a sliding groove (9), the outer wall of the cylinder (5) is provided with a clamping groove (10 ... The inner thread of (6) is connected with bolt 1 (11), the outer wall of bolt 1 (11) is threadedly connected to the inner part of cylinder (5), the outer wall of bolt 1 (11) is threadedly connected to the inner part of main beam (4), the inner thread of cylinder (5) is connected with bolt 2 (12), the outer wall of bolt 2 (12) is threadedly connected to the inner part of main beam (4), the outer wall of welding ring 2 (8) is fixedly connected with inclined protrusion (27), the inner part of welding ring 2 (8) is provided with a fixing component, and the outer wall of main beam (4) is provided with a buffer component.

2. The truss frame of an electric bicycle according to claim 1, characterized in that: The fixing assembly includes a sliding column (13), the outer wall of the sliding column (13) is slidably connected to the inside of the second welding ring (8), the outer wall of the sliding column (13) is fixedly connected to the limiting plate (14), the outer wall of the sliding column (13) is fixedly connected to the inclined clamping block (15), the outer wall of the inclined clamping block (15) is slidably connected to the inner wall of the sliding groove (9), the outer wall of the inclined clamping block (15) is slidably connected to the outer wall of the cylinder (5), and the outer wall of the inclined clamping block (15) is slidably connected to the inner wall of the clamping groove (10).

3. The truss frame of an electric bicycle according to claim 1, characterized in that: The fixing assembly further comprises a spring 1 (16), one end of which is fixedly connected to the outer wall of the inclined block (15), and the other end of which is fixedly connected to the inner wall of the sliding groove (9).

4. The truss frame of an electric bicycle according to claim 1, characterized in that: The buffer assembly includes a fixed block ring (17), the inner wall of the fixed block ring (17) is fixedly connected to the outer wall of the main beam (4), one end of the fixed block ring (17) is fixedly connected to a spring 2 (18), the other end of the spring 2 (18) is fixedly connected to a sliding cylinder (19), the outer wall of the sliding cylinder (19) is slidably connected to the inner wall of the main beam (4), and the outer wall of the spring 2 (18) is slidably connected to the outer wall of the main beam (4).

5. The truss frame of an electric bicycle according to claim 1, characterized in that: The buffer assembly also includes a fixed block 1 (20), the outer wall of the fixed block 1 (20) is fixedly connected to the outer wall of the sliding cylinder (19), the outer wall of the fixed block 1 (20) is rotatably connected to a fixed seat 1 (21), one end of the fixed seat 1 (21) is fixedly connected to an oil cylinder (22), the other end of the oil cylinder (22) is fixedly connected to a fixed seat 2 (24), the inner wall of the fixed seat 2 (24) is rotatably connected to a fixed block 2 (25), the outer wall of the fixed block 2 (25) is fixedly connected to a round block (26), and the outer wall of the round block (26) is fixedly connected to the outer wall of the side beam (2).

6. The truss frame of an electric bicycle according to claim 1, characterized in that: The buffer assembly further includes a spring three (23), one end of the spring three (23) is fixedly connected to the outer wall of the fixing seat one (21), and the other end of the spring three (23) is fixedly connected to the outer wall of the fixing seat two (24).

7. The truss frame of an electric bicycle according to claim 1, characterized in that: The outer wall of the side beam (2) is fixedly connected to a front support frame (30), the other end of the front support frame (30) is fixedly connected to the outer wall of the connecting frame (3), the outer wall of the main frame (1) is fixedly connected to a vehicle head mounting cylinder (28), and the inner wall of the vehicle head mounting cylinder (28) is fixedly connected to a mounting column (29).

8. The truss frame of an electric bicycle according to claim 1, characterized in that: The outer wall of the side beam (2) is fixedly connected to the rear support frame (31), the outer wall of the side beam (2) is fixedly connected to the middle support frame (34), and the outer wall of the middle support frame (34) is fixedly connected to the outer wall of the connecting frame (3).

9. The truss frame of an electric bicycle according to claim 1, characterized in that: The outer wall of the side beam (2) is fixedly connected to a seat cushion support frame (32), and the outer wall of the seat cushion support frame (32) is fixedly connected to a diagonal brace 1 (33).

10. A method for using a truss frame of an electric bicycle, characterized in that: The truss frame for an electric bicycle according to any one of claims 1 to 9, the method comprising the following steps: S1: During installation, first fix the main frame (1) and then weld the connecting frame (3) to the main frame (1). After the welding operation of the connecting frame (3) is completed, the side beam (2) is welded to the outer wall of the main frame (1). Then, one end of the front support frame (30) is welded to the outer wall of the side beam (2), and the other end is welded to the outer wall of the connecting frame (3). Then, the rear support frame (31) is welded to one end of the side beam (2). Then, the middle support frame (34) is welded. Finally, the seat support frame (32) welded to the diagonal support (33) is welded to the side beam (2) to complete the installation of the main frame of the vehicle frame. S2: After the main frame of the vehicle frame is installed, the main crossbeam (4) needs to be installed and welded. At this time, the fixed block ring (17), the second spring (18) and the sliding cylinder (19) are first inserted into the outer wall of the main crossbeam (4), and then the fixed block ring (17) is welded and fixed. Then the cylinder (5) is slid into the outer wall of the main crossbeam (4), and then the welding ring (6), the cylinder (5) and the main crossbeam (4) are fixed by the bolt (11). Then, the cylinder (5) and the main crossbeam (4) are fixed by the bolt (12). After the fixing is completed, the welding ring (6) is driven by the main crossbeam (4) to make the welding ring (6) fit the outer wall of the side beam (2), and then the welding ring (8) is rotated to make the welding ring (8) drive the connecting column (7) to rotate. Inside the welding ring 1 (6), during the movement of the welding ring 2 (8), the welding ring 2 (8) will drive the inclined surface block (15) to move and slide on the outer wall of the cylinder (5). During the sliding of the inclined surface block (15) on the outer wall of the cylinder (5), the cylinder (5) will be forced to move outward and cause the sliding column (13) to slide inside the welding ring 2 (8) and at the same time cause the spring 1 (16) to be forced to contract. When the outer wall of the inclined surface block (15) slides to the inner wall of the slot (10) provided on the outer wall of the cylinder (5), the preliminary fixation of the welding ring 2 (8) is completed, and then the pre-fixation of the main beam (4) is completed. After that, the welding ring 2 (8), the welding ring 1 (6) and the inclined protrusion (27) can be welded together with the side beam (2) to complete the installation of the main beam (4); S3: After the main crossbeam (4) is installed, the round block (26) is fitted to the outer wall of the main crossbeam (4), and then the round block (26) is welded to complete the fixation of the buffer assembly, thereby completing the installation of the entire frame.

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