Tricycle frame and tricycle

Abstract

The tricycle frame is composed of an upper frame body and a lower frame body which are fixedly connected, the upper frame body comprises an upper front cross beam, an upper left edge beam and an upper right edge beam, and the upper front cross beam, the upper left edge beam and the upper right edge beam are integrally formed; the lower vehicle frame comprises a lower front cross beam, a lower left edge beam and a lower right edge beam which are integrally formed; the upper frame and the lower frame are integrally formed respectively, so that the number of parts, needing to be welded, of the frame can be greatly reduced, machining procedures are reduced, meanwhile, waste is reduced, meanwhile, the strength of the tricycle frame is improved, the probability of stress concentration during use is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of vehicle frames, in particular to a tricycle frame and a tricycle. Background Art

[0002] During the use of tricycles, the frame is the main structure that bears the load. The connection joints formed by welding are very prone to stress concentration when bearing load. The combined effect of stress concentration and residual stress generated during welding will cause changes in the vehicle's performance. At the same time, the current tricycle frames contain more welded connection parts, which leads to complicated processing procedures and a lot of waste.

[0003] Therefore, it is urgent to develop a tricycle frame and a tricycle, which can greatly reduce the parts of the frame that need to be welded, thereby reducing the processing steps and reducing the generation of waste. At the same time, the strength of the tricycle frame is improved, the probability of stress concentration during use is reduced, and the service life is extended. Summary of the invention

[0004] In view of this, the purpose of the utility model is to provide a tricycle frame and a tricycle, which can reduce the parts of the frame that need to be welded, thereby reducing the processing steps, reducing the generation of waste and improving the strength of the tricycle frame.

[0005] The utility model discloses a tricycle frame, which is composed of an upper frame and a lower frame which are fixedly connected, wherein the upper frame comprises an upper front cross beam, an upper left beam and an upper right beam, and the upper front cross beam, the upper left beam and the upper right beam are integrally formed; the lower frame comprises a lower front cross beam, a lower left beam and a lower right beam, and the lower front cross beam, the lower left beam and the lower right beam are integrally formed; the upper frame and the lower frame are respectively integrally formed, which can reduce the parts which need to be welded, thereby reducing the waste generated by welding, and at the same time, the upper frame and the lower frame have high bearing capacity.

[0006] Furthermore, an arc-shaped transition is formed between the upper front cross beam and the upper left beam and the upper right beam, and an arc-shaped transition is formed between the lower front cross beam and the lower left beam and the lower right beam; through the arc-shaped transition, stress concentration can be reduced, thereby improving the bearing capacity of the upper frame and the lower frame.

[0007] Furthermore, the upper frame also includes an upper middle cross beam, two rear vertical beams and a front vertical beam, the two rear vertical beams are located in the middle of the upper frame and extend downward and are respectively connected to the tail of the lower frame, and the two front vertical beams are located at the ends of the upper frame and extend downward and are respectively connected to the middle of the lower frame; arranging overlapping parts in the spatial positions of the upper frame and the lower frame can improve the overall load-bearing capacity of the tricycle frame.

[0008] Furthermore, the lower frame also includes a lower middle cross beam and two lower longitudinal beams, and the two lower longitudinal beams are arranged between the lower middle cross beam and the lower front cross beam; the lower longitudinal beams are arranged to improve the structural stability of the lower frame.

[0009] Furthermore, it also includes a "U-shaped" head pipe, and the two ends of the "U"-shaped head pipe are respectively arranged at the ends of the two lower longitudinal beams; connecting the two ends of the U-shaped head pipe with the lower longitudinal beams can improve the bearing capacity of the U-shaped head pipe.

[0010] Furthermore, it also includes two reinforcing ribs, which are respectively arranged on the lower left beam and the lower right beam, one end of the two reinforcing ribs is respectively connected to the middle part of the front vertical beam, and the other end is respectively connected to the lower left beam and the lower right beam; the reinforcing ribs are arranged to further improve the bearing capacity of the tricycle frame, avoid structural damage at the connection between the upper frame and the lower frame, and extend the service life.

[0011] Furthermore, two lower vertical beams are arranged on the lower middle cross beam, and the two lower vertical beams extend upward and are connected to the upper front cross beam.

[0012] Furthermore, the upper frame and the lower frame are respectively formed by bending a square tube to form a "U"-shaped structure; being formed by bending a square tube reduces the number of welding.

[0013] The utility model also discloses a tricycle, comprising a tricycle frame. By arranging the tricycle frame to be formed in one piece, the parts that need to be welded are effectively reduced, the bearing capacity of the tricycle frame is improved, and the service life of the tricycle is extended.

[0014] The beneficial effects of the utility model: the tricycle frame and tricycle of the utility model, the upper frame and the lower frame are respectively formed in one piece, which can reduce the parts that need to be welded, greatly improve the production efficiency, and at the same time reduce the waste generated by welding, saving materials. At the same time, due to the one-piece forming structure, the generation of welding points is reduced, thereby reducing stress concentration and improving the bearing capacity of the tricycle frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] The above drawings contain the following reference numerals:

[0018] 1. Upper frame; 101. Upper left beam; 102. Upper right beam; 103. Upper front cross beam; 104. Upper middle cross beam; 105. Rear vertical beam; 106. Front vertical beam;

[0019] 2. Lower frame; 201. Lower left beam; 202. Strengthening rib; 203. Lower vertical beam; 204. Lower longitudinal beam; 205. Lower front cross beam; 206. Head pipe; 207. Lower right beam; 208. Lower middle cross beam. DETAILED DESCRIPTION

[0020] Figure 1 The schematic diagram of the structure of the utility model is shown in the figure: a tricycle frame of the present embodiment is composed of an upper frame 1 and a lower frame 2 that are fixedly connected, the upper frame 1 includes an upper front cross beam 103, an upper left beam 101 and an upper right beam 102, and the upper front cross beam 103, the upper left beam 101 and the upper right beam 102 are integrally formed; the lower frame 2 includes a lower front cross beam 205, a lower left beam 201 and a lower right beam 207, and the lower front cross beam 205, the lower left beam 201 and the lower right beam 207 are integrally formed; in this structure, the left and right are only used to distinguish between two side beams, and the upper frame 1 and the lower frame 2 are respectively integrally formed, which can reduce the parts that need to be welded, thereby reducing the waste generated by welding, and at the same time, the upper frame 1 and the lower frame 2 have high bearing capacity,

[0021] In the prior art, the frame is the main structure that bears the load, and the connection joints formed by welding are very likely to have stress concentration when bearing loads. The combined effect of the stress and the residual stress generated during welding will cause changes in the performance of the vehicle. At the same time, the current tricycle frame contains a large number of welded connection parts, which leads to complicated processing procedures and a large amount of waste. The technical solution reduces the parts that need to be welded by forming the upper frame and the lower frame of the tricycle frame into one piece. At the same time, while reducing the waste generated by welding, the frame's load-bearing capacity can be further improved due to the one-piece formation, thereby extending the service life of the frame.

[0022] In this embodiment, an arc-shaped transition is formed between the upper front cross beam 103 and the upper left beam 101 and the upper right beam 102, and an arc-shaped transition is formed between the lower front cross beam 205 and the lower left beam 201 and the lower right beam 207; in this structure, the arc-shaped transition means that the connection between the two ends of the upper front cross beam 103 and the upper left beam 101 and the upper right beam 102 is a transition with a certain arc, and the connection between the two ends of the lower front cross beam 205 and the lower left beam 201 and the lower right beam 207 is a transition with a certain arc, which is different from the traditional right-angle transition, reduces stress concentration at the connection parts, and improves the impact resistance and load-bearing capacity of the frame.

[0023] In this embodiment, the upper frame 1 also includes an upper middle cross beam 104, two rear vertical beams 105 and a front vertical beam 106. The two rear vertical beams 105 are located in the middle of the upper frame 1 and extend downward and are respectively connected to (the connection method can be welding and fixing) the rear part of the lower frame 2. The two front vertical beams 106 are located at the ends of the upper frame 1 and extend downward and are respectively connected to (the connection method can be welding and fixing) the middle part of the lower frame 2. In this structure, the middle part of the upper frame 1 is where the upper middle cross beam 104 is located, and the position of the upper middle cross beam 104 can be determined according to actual production needs. The two rear vertical beams 105 are respectively connected to the two ends of the rear part of the lower frame 2 and form a closed structure. One end of the front vertical beam 106 is arranged on the upper frame 1 near the upper front cross beam 103, and the other end is fixedly connected to the lower frame 2. By locating the lower frame 2 part below the upper frame 1, the overall bearing capacity of the tricycle frame can be improved.

[0024] In this embodiment, the lower frame 2 further includes a lower middle cross beam 208 and two lower longitudinal beams 204 , and the two lower longitudinal beams 204 are arranged between the lower middle cross beam 208 and the lower front cross beam 205 ; two lower longitudinal beams 204 are arranged to further improve the bearing capacity and structural strength of the lower frame 2 .

[0025] In this embodiment, a "U-shaped" head tube 206 is also included, and the two ends of the "U"-shaped head tube 206 are respectively arranged at the ends of the two lower longitudinal beams 204; the "U"-shaped head tube 206 is arranged at a position close to the lower front cross beam 205 and the two ends are respectively arranged on the two lower longitudinal beams 204, which can improve the structural stability of the "U"-shaped head tube 206 and reduce the parts of the lower frame 2 that need to be welded.

[0026] In this embodiment, two reinforcing ribs 202 are further included, and the two reinforcing ribs 202 are respectively arranged on the lower left beam 201 and the lower right beam 207, one end of the two reinforcing ribs 202 is respectively connected to (can be welded and fixed) the middle part of the front vertical beam 106, and the other end is respectively connected to the lower left beam 201 and the lower right beam 207; in this structure, the middle part is a position above the lower frame 2, and the two reinforcing ribs 202 respectively form a triangular structure with the front vertical beam 106, the upper left beam 201 and the lower right beam 207. By providing two reinforcing ribs 202, the connection strength of the connection between the upper frame 1 and the lower frame 2 is improved, thereby improving the bearing capacity of the entire frame.

[0027] In this embodiment, two lower vertical beams 203 are arranged on the lower middle cross beam 208, and the two lower vertical beams 203 extend upward and are connected to the upper front cross beam 103; the two lower vertical beams 203 are respectively connected to the positions of the curved arc transition of the upper front cross beam 103, and form supports to improve the structural strength of the curved arc transition position.

[0028] In this embodiment, the upper frame 1 and the lower frame 2 are respectively formed by bending a square tube to form a "U"-shaped structure; the upper frame 1 and the lower frame 2 are respectively formed by bending a square tube, which reduces the parts that need to be welded and forms a "U"-shaped structure with an arc transition to reduce stress concentration.

[0029] In the present embodiment, a tricycle is also disclosed, including a tricycle frame. By configuring the tricycle frame to be integrally formed, the number of parts requiring welding is effectively reduced, the bearing capacity of the tricycle frame is improved, and the service life of the tricycle is thereby extended.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A tricycle frame, characterized in that: The vehicle body is composed of an upper frame and a lower frame which are fixedly connected, wherein the upper frame comprises an upper front cross beam, an upper left beam and an upper right beam, and the upper front cross beam, the upper left beam and the upper right beam are integrally formed; the lower frame comprises a lower front cross beam, a lower left beam and a lower right beam, and the lower front cross beam, the lower left beam and the lower right beam are integrally formed.

2. The tricycle frame according to claim 1, characterized in that: An arc-shaped transition is formed between the upper front cross beam and the upper left beam and the upper right beam, and an arc-shaped transition is formed between the lower front cross beam and the lower left beam and the lower right beam.

3. The tricycle frame according to claim 1, characterized in that: The upper frame also includes an upper middle cross beam, two rear vertical beams and a front vertical beam. The two rear vertical beams are located in the middle of the upper frame and extend downward and are respectively connected to the tail of the lower frame. The two front vertical beams are located at the ends of the upper frame and extend downward and are respectively connected to the middle of the lower frame.

4. The tricycle frame according to claim 1, characterized in that: The lower frame also includes a lower middle cross beam and two lower longitudinal beams, and the two lower longitudinal beams are arranged between the lower middle cross beam and the lower front cross beam.

5. The tricycle frame according to claim 4, characterized in that: It also includes a "U-shaped" head pipe, and the two ends of the "U"-shaped head pipe are respectively arranged at the ends of the two lower longitudinal beams.

6. The tricycle frame according to claim 3, characterized in that: It also includes two reinforcing ribs, which are respectively arranged on the lower left beam and the lower right beam. One end of the two reinforcing ribs is respectively connected to the middle part of the front vertical beam, and the other end is respectively connected to the lower left beam and the lower right beam.

7. The tricycle frame according to claim 4, characterized in that: Two lower vertical beams are arranged on the lower middle cross beam, and the two lower vertical beams extend upward and are connected with the upper front cross beam.

8. The tricycle frame according to claim 1, characterized in that: The upper frame and the lower frame are respectively formed by bending a square tube to form a "U"-shaped structure.

9. A tricycle, characterized in that: A tricycle frame comprising any one of claims 1-8.

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