Head tube and vehicle

Abstract

The utility model belongs to the technical field of vehicles, and discloses a vehicle head tube and a vehicle. A first mounting part is arranged at one end of the bicycle head pipe, a second mounting part is arranged at the other end of the bicycle head pipe, the bicycle head pipe is provided with a cavity, the first mounting part and the second mounting part communicate with the two ends of the cavity correspondingly, and an avoiding structure is further arranged on the bicycle head pipe; the bicycle head pipe comprises a first head pipe structure and a second head pipe structure which are symmetrically arranged, and the first head pipe structure and the second head pipe structure are fixedly connected. The bicycle head pipe is manufactured through the machining method of split forging and then welding, the wall thickness difference of the bicycle head pipe can be guaranteed, the use performance of the bicycle head pipe can be guaranteed, cost can be reduced, and economical efficiency can be improved. And the avoiding structure can avoid installation difficulty caused by insufficient installation space, and installation convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to two -wheeled vehicle technical field especially vehicle head pipe and vehicle. BACKGROUND

[0002] The vehicle head pipe is an important component of two-wheeled vehicles such as bicycles, is the most important load-bearing component in the frame structure, and is also the key to determining the service life and cost of the frame. In addition to the standard round straight cylinder structure, the vehicle head pipe also has a triangular taper structure, and the lower end of the vehicle head pipe is relatively thick, which can significantly improve the rigidity of the bicycle. Generally, the upper and lower ports of the vehicle head pipe are required to be circular structures, and the vehicle head pipe port is assembled with a wear-resistant steel bowl or a better rotating effect peeling. From the beginning of the ordinary cylindrical vehicle head pipe to the tapered vehicle head pipe and the profiled vehicle head pipe with modeling, the tapered vehicle head pipe uses internal and external turning processes to meet the design appearance and wall thickness requirements during the quasi-addition stage, and the profiled vehicle head pipe uses relatively complex processes such as flaring, hard mold forming and hot plastic forming to realize the design requirements of the vehicle head pipe. With the diversification of modeling design, the vehicle head pipe process is also constantly improving. For vehicle head pipe designs with unequal wall thickness, the conventional process is liquid die forging core pulling, which can cause large differences in wall thickness and make it difficult to process the inner curved surface in one step, resulting in complex processes and high processing costs.

[0003] Therefore, a vehicle head pipe and vehicle are needed to solve the above problems. SUMMARY

[0004] The utility model aims at providing a kind of vehicle head pipe and vehicle, the processing of vehicle head pipe is carried out by the way of split type forging and then welding, both can guarantee the wall thickness difference of vehicle head pipe, ensure its use performance and strength, can also reduce cost, improve economy.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The vehicle head pipe is provided with a first mounting portion at one end, and a second mounting portion at the other end, and has a cavity, the first mounting portion and the second mounting portion are respectively communicated with both ends of the cavity, and the vehicle head pipe is further provided with a avoiding structure.

[0007] The vehicle head pipe includes a first head pipe structure and a second head pipe structure arranged symmetrically, and the first head pipe structure and the second head pipe structure are fixedly connected.

[0008] As an optional technical solution, the vehicle head pipe is in a spindle shape.

[0009] As an optional technical scheme, the first pipe structure comprises a first upper end, a first lower end and a first middle section, the first upper end and the first lower end are connected to two ends of the first middle section respectively; the second pipe structure comprises a second upper end, a second lower end and a second middle section, the second upper end and the second lower end are connected to two ends of the second middle section respectively, the first upper end and the second upper end are symmetrically arranged to form the first mounting portion, the first lower end and the second lower end are symmetrically arranged to form the second mounting portion, the first middle section and the second middle section are symmetrically arranged, and the wall thickness of the first middle section and the wall thickness of the second middle section are uniform and equal.

[0010] As an optional technical scheme, the first middle section is provided with a first recess, the second middle section is provided with a second recess, and the first recess and the second recess are smoothly connected to form the avoiding structure.

[0011] As an optional technical scheme, the first upper end is provided with a first limiting protrusion and a first arc surface, the first limiting protrusion is arranged at one end of the outer end surface of the first arc surface away from the first upper end, the second upper end is provided with a second limiting protrusion and a second arc surface, the second limiting protrusion is arranged at one end of the outer end surface of the second arc surface away from the second upper end, the first limiting protrusion, the second limiting protrusion, the first arc surface and the second arc surface form the first mounting portion; and / or, the first lower end is provided with a third limiting protrusion and a third arc surface, the third limiting protrusion is arranged at one end of the outer end surface of the third arc surface away from the first lower end, the second lower end is provided with a fourth limiting protrusion and a fourth arc surface, the fourth limiting protrusion is arranged at one end of the outer end surface of the fourth arc surface away from the second lower end, the third limiting protrusion, the fourth limiting protrusion, the third arc surface and the fourth arc surface form the second mounting portion.

[0012] As an optional technical scheme, the first middle section is provided with a first opening, and the first opening is arranged at one side of the first recess close to the first upper end, the second middle section is provided with a second opening, the second opening is arranged at one side of the second recess close to the second upper end, and the first opening and the second opening are symmetrically arranged to form a threading hole.

[0013] As an optional technical scheme, the first pipe structure is provided with a first groove, the second pipe structure is provided with a second groove, the first groove and the second groove form a water outlet, and the water outlet is located at one side of the avoiding structure away from the first mounting portion.

[0014] As an optional technical solution, the first pipe structure and the second pipe structure are connected by welding.

[0015] The utility model discloses still uses following technical scheme:

[0016] Vehicle, the vehicle includes fork structure, the fork structure includes fork body and cross, the fork body and the cross are arranged at an angle, the vehicle still includes the vehicle head pipe as described above, the vehicle head pipe with the fork body and the cross are all fixedly connected.

[0017] The utility model discloses the beneficial effect:

[0018] The utility model discloses a vehicle head pipe, one end of the vehicle head pipe is provided with first installation part, the other end of vehicle head pipe is provided with second installation part, and the vehicle head pipe has cavity, and first installation part and second installation part are communicated with the both ends of cavity respectively, and the vehicle head pipe is still provided with avoiding structure, the vehicle head pipe includes the first pipe structure and the second pipe structure of symmetrical setting, and first pipe structure and second pipe structure fixed connection. This vehicle head pipe processes the vehicle head pipe through the mode of split type forging and then welding, can guarantee the wall thickness difference of vehicle head pipe, ensures its use performance, can reduce the cost again, promotes the economy. And avoiding structure can avoid the installation difficulty caused by insufficient installation space, promotes the installation convenience.

[0019] The utility model discloses still disclose a vehicle, the vehicle includes fork structure, the fork structure includes the fork body and cross of angle arrangement, the vehicle still includes above -mentioned vehicle head pipe, and vehicle head pipe with fork body and cross are all fixedly connected. This vehicle is provided with the vehicle head pipe, can ensure the structural strength of vehicle, promotes the service life, can effectively reduce the cost, promotes the economy. ACCURACY OF DRAWINGS

[0020] Figure 1 It is part structure schematic diagram of the vehicle of the utility model embodiment;

[0021] Figure 2 It is first structure schematic diagram of the vehicle head pipe of the utility model embodiment;

[0022] Figure 3 It is second structure schematic diagram of the vehicle head pipe of the utility model embodiment;

[0023] Figure 4 It is structure schematic diagram of the first pipe transition piece and the second pipe transition piece of the utility model embodiment butt joint.

[0024] In the drawing:

[0025] 1, vehicle head pipe;2, fork structure;201, fork body;202, cross;

[0026] 10, first pipe structure; 11, first upper end portion; 12, first lower end portion; 13, first middle section; 131, first recess; 10a, first pipe transition piece;

[0027] 20, second pipe structure; 21, second upper end portion; 22, second lower end portion; 23, second middle section; 231, second recess; 20a, second pipe transition piece;

[0028] 30, first mounting portion; 31, first limiting boss; 32, first mounting hole;

[0029] 40, second mounting portion; 41, second limiting boss; 42, second mounting hole;

[0030] 50, cavity; 60, first bevel; 70, second bevel; 80, threading hole; 90, water outlet. DETAILED DESCRIPTION

[0031] The utility model will be explained in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and are not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0032] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature in the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature in the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature in the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0034] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0035] As shown in Figure 1 The present embodiment provides a vehicle, which comprises a front fork structure 2, the front fork structure 2 comprising a front fork body 201 and a cross fork 202, the front fork body 201 and the cross fork 202 being arranged at an angle, and the vehicle further comprising a head tube 1, the head tube 1 being fixedly connected with the front fork body 201 and the cross fork 202. Specifically, in the present embodiment, the head tube 1 of the vehicle is made by first being forged in a split body manner and then being welded, and is machined before and after welding to ensure the wall thickness difference, which can not only ensure that the head tube 1 has good mechanical strength and thus improve the service life, but also effectively reduce the cost and improve the economy of the vehicle.

[0036] As shown in Figures 2 to 4 The present embodiment also provides a head tube 1, one end of the head tube 1 being provided with a first mounting portion 30, the other end of the head tube 1 being provided with a second mounting portion 40, the head tube 1 having a cavity 50, the first mounting portion 30 and the second mounting portion 40 being respectively communicated with two ends of the cavity 50, and the head tube 1 further being provided with a avoiding structure; wherein the head tube 1 comprises a first head tube structure 10 and a second head tube structure 20 which are symmetrically arranged and fixedly connected. Specifically, in the present embodiment, the first mounting portion 30 and the second mounting portion 40 are respectively used for mounting a steel bowl or a bearing to ensure the use performance of the head tube 1, the first mounting portion 30 and the second mounting portion 40 are respectively communicated with two ends of the cavity 50, which can facilitate threading. The head tube 1 comprises the first head tube structure 10 and the second head tube structure 20 which are symmetrically arranged and fixedly connected, and the head tube 1 is made by being forged in a split body manner and then being welded, which can separately machine the first head tube structure 10 and the second head tube structure 20, can not only ensure the wall thickness difference and meet the strength requirement of use, but also can reduce the processing difficulty and the processing cost, and improve the economy.

[0037] Specifically, in the present embodiment, the head tube 1 is connected with the front fork body 201 and the cross fork 202 of the front fork structure 2 of the vehicle by welding, the head tube 1, the front fork body 201 and the cross fork 202 are arranged in a triangular shape, and the avoiding structure of the head tube 1 can avoid when installing bolts on the front fork body 201 to ensure the installation space of the bolts, and thus improve the installation efficiency.

[0038] Further, the front pipe 1 is spindle-shaped. Specifically, in the embodiment, the outer side surface of the first front pipe structure 10 and the outer side surface of the second front pipe structure 20 are smoothly transitioned, so that the front pipe 1 as a whole is spindle-shaped with a thick middle and thin ends, the structural strength of the front pipe 1 is improved, and the structural strength of the frame is improved, thereby ensuring the service life of the vehicle.

[0039] Further, as shown in Figure 3 the first upper end 11 and the first lower end 12 are respectively connected to two ends of the first middle section 13, the second upper end 21 and the second lower end 22 are respectively connected to two ends of the second middle section 23, the first upper end 11 and the second upper end 21 are symmetrically arranged to form a first mounting portion 30, the first lower end 12 and the second lower end 22 are symmetrically arranged to form a second mounting portion 40, the first middle section 13 and the second middle section 23 are symmetrically arranged, and the wall thickness of the first middle section 13 and the wall thickness of the second middle section 23 are uniform and equal. Specifically, in the embodiment, the wall thickness of the first middle section 13 and the wall thickness of the second middle section 23 are uniform and equal, the first middle section 13 and the second middle section 23 are symmetrically arranged to form a spindle-shaped inner cavity, thereby making the wall thickness of the middle section of the front pipe 1 uniform and ensuring the balanced stress of the front pipe 1. In the embodiment, the wall thickness of the first mounting portion 30 and the second mounting portion 40 is greater than the wall thickness of the middle section of the front pipe 1, which can further improve the structural strength and ensure the use performance of the front pipe 1.

[0040] Further, as shown in Figure 2 the first upper end 11 and the first lower end 12 are respectively connected to two ends of the first middle section 13, the second upper end 21 and the second lower end 22 are respectively connected to two ends of the second middle section 23, the first upper end 11 and the second upper end 21 are symmetrically arranged to form a first mounting portion 30, the first lower end 12 and the second lower end 22 are symmetrically arranged to form a second mounting portion 40, the first middle section 13 and the second middle section 23 are symmetrically arranged, and the wall thickness of the first middle section 13 and the wall thickness of the second middle section 23 are uniform and equal. Specifically, in the embodiment, the wall thickness of the first middle section 13 and the wall thickness of the second middle section 23 are uniform and equal, the first middle section 13 and the second middle section 23 are symmetrically arranged to form a spindle-shaped inner cavity, thereby making the wall thickness of the middle section of the front pipe 1 uniform and ensuring the balanced stress of the front pipe 1. In the embodiment, the wall thickness of the first mounting portion 30 and the second mounting portion 40 is greater than the wall thickness of the middle section of the front pipe 1, which can further improve the structural strength and ensure the use performance of the front pipe 1.

[0041] Further, the first upper end part 11 is provided with a first limiting protrusion and a first arc surface, the first limiting protrusion is arranged at one end of the first arc surface away from the outer end surface of the first upper end part 11, the second upper end part 21 is provided with a second limiting protrusion and a second arc surface, the second limiting protrusion is arranged at one end of the second arc surface away from the outer end surface of the second upper end part 21, the first limiting protrusion, the second limiting protrusion, the first arc surface and the second arc surface form a first mounting part 30; and / or, the first lower end part 12 is provided with a third limiting protrusion and a third arc surface, the third limiting protrusion is arranged at one end of the third arc surface away from the outer end surface of the first lower end part 12, the second lower end part 22 is provided with a fourth limiting protrusion and a fourth arc surface, the fourth limiting protrusion is arranged at one end of the fourth arc surface away from the outer end surface of the second lower end part 22, the third limiting protrusion, the fourth limiting protrusion, the third arc surface and the fourth arc surface form a second mounting part 40.

[0042] Specifically, as shown in Figure 2 and Figure 3 , in the embodiment, the first limiting protrusion and the second limiting protrusion form a first limiting boss 31, the first arc surface and the second arc surface form a first mounting hole 32, the first limiting boss 31 and the first mounting hole 32 form the above-mentioned first mounting part 30, and the third limiting protrusion and the fourth limiting protrusion form a second limiting boss 41, the third arc surface and the fourth arc surface form a second mounting hole 42, the second limiting boss 41 and the second mounting hole 42 form the above-mentioned second mounting part 40, in actual use, the first mounting part 30 and the second mounting part 40 can be used to accommodate the corresponding bearing, thereby ensuring the installation stability and position accuracy of the bearing.

[0043] In another embodiment, the first mounting part 30 and / or the second mounting part 40 can be a corresponding structure for connecting a steel bowl, which is not described here.

[0044] Further, as shown in Figure 2 , in the embodiment, the first middle section 13 is provided with a first opening, and the first opening is arranged on one side of the first recess 131 close to the first upper end part 11, the second middle section 23 is provided with a second opening, and the second opening is arranged on one side of the second recess 231 close to the second upper end part 21, the first opening and the second opening are symmetrically arranged to form a threading hole 80, so as to facilitate the wiring inside the pipe and improve the appearance of the vehicle.

[0045] Further, as shown in Figure 2 , the first pipe structure 10 is provided with a first groove, and the second pipe structure 20 is provided with a second groove, the first groove and the second groove form a water outlet 90, the water outlet 90 is located on one side of the avoidance structure away from the first mounting part 30, which can facilitate the discharge of cleaning water when the vehicle head pipe is immersed in water.

[0046] Further, in the embodiment, the water outlet 90 is in a strip shape, which can improve the water outlet efficiency, avoid the accumulation of cleaning water, and ensure the product performance.

[0047] Further, the first and second first pipe structures 10 and 20 are connected by welding. Specifically, in the embodiment, the machining of the vehicle first pipe 1 is performed by means of split forging and then welding, which can ensure the wall thickness difference of the vehicle first pipe 1, ensure the use performance, reduce the cost, and improve the economy. In addition, the avoiding structure can avoid the installation difficulty caused by insufficient installation space and improve the installation convenience.

[0048] The machining process of the vehicle first pipe in the embodiment will be described in detail.

[0049] First, the first base and the second base are processed by forging, the outer surface of the first base and the outer surface of the second base are the same, and can jointly form the spindle-shaped outer shape structure of the vehicle head pipe 1, this processing method can obtain the outer shape characteristics of the vehicle head pipe 1 meeting the use requirements without additional processing of the outer surface of the first base and the outer surface of the second base, saving processing cost and improving processing efficiency; then, the inner surface of the first base and the inner surface of the second base obtained after forging are machined to eliminate the uneven wall thickness of the first base and the second base, ensure the uniformity of the wall thickness of the vehicle head pipe 1, and further ensure the carrying capacity of the vehicle head pipe 1, improve the structural strength, and ensure the service life; then, the first base and the second base are bevel processed to form the first head pipe transition piece 10a and the second head pipe transition piece 20a, the bevel processing can ensure the welding quality, specifically, in the embodiment, the bevel on the first base and the second base specifically includes a first bevel 60 and a second bevel 70, the first bevel 60 is the bevel located on the outer side after the butt joint of the first base and the second base, the second bevel 70 is the bevel located on the inner side after the butt joint of the first base and the second base, and the second bevel 70 is located on the inner side wall of the first upper end portion 11, the first lower end portion 12, the second upper end portion 21 and the second lower end portion 22; then, the first head pipe transition piece 10a and the second head pipe transition piece 20a are buckled to form the first butt joint and the second butt joint, and the welding gun is used to perform spot welding on the first butt joint and the second butt joint, and attention is paid to spot welding from both ends of the vehicle head pipe 1 to the middle according to the preset interval in sequence, and the first butt joint and the second butt joint are spot welded in sequence, which can avoid welding deformation, improve welding quality, and ensure the performance of the vehicle head pipe 1; then, the mechanical arm automatic welding method is adopted, the two sides of the first head pipe transition piece 10a and the second head pipe transition piece 20a that need to be welded are outward, the automatic welding gun arm is manually adjusted, the distance between the tungsten wire of the welding gun and the arc surface formed by the first head pipe transition piece 10a and the second head pipe transition piece 20a is 2-3mm, the welding current is slowly increased from the minimum value, and the welding current is controlled at 150-200A, which can prevent the problem of welding penetration caused by the easy breakdown of the pipe wall by the instantaneous large current in the case of thin pipe wall; and in the embodiment, in order to prevent the end face weld from cracking, the starting end of the second bevel 70 on the inner side of the end face is taken as the first starting point to start welding, and then the welding is stopped at the end of the second bevel 70 on the inner side of the other end face of the vehicle head pipe 1, a first weld is formed, then the first weld is polished, then the above steps are repeated for the second welding, a second weld is formed and polished, and the second starting point of the second welding is different from the first starting point of the first welding; then, the grinding tool is used to grind the vehicle head pipe transition piece to ensure that the outside of the vehicle head pipe 1 is smooth without burrs and poor welding, etc., so as to ensure the aesthetics of the vehicle head pipe 1.Finally, the two ends of the front tube transition piece are machined to remove excess material, forming the first mounting part 30 and the second mounting part 40 that meet the requirements, thus obtaining the front tube 1.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A front tube, characterized in that, One end of the vehicle head tube is provided with a first mounting part (30), and the other end of the vehicle head tube is provided with a second mounting part (40). The vehicle head tube has a cavity (50). The first mounting part (30) and the second mounting part (40) are respectively connected to the two ends of the cavity (50). The vehicle head tube is also provided with a clearance structure. The vehicle head tube includes a first head tube structure (10) and a second head tube structure (20) arranged symmetrically, and the first head tube structure (10) and the second head tube structure (20) are fixedly connected.

2. The head tube according to claim 1, characterized in that, The front tube of the vehicle has a spindle-shaped structure.

3. The head tube according to claim 2, characterized in that, The first head tube structure (10) includes a first upper end (11), a first lower end (12) and a first middle section (13), the first upper end (11) and the first lower end (12) being connected to the two ends of the first middle section (13); the second head tube structure (20) includes a second upper end (21), a second lower end (22) and a second middle section (23), the second upper end (21) and the second lower end (22) being connected to the two ends of the second middle section (23), the first upper end (11) and the second upper end (21) being symmetrically arranged to form the first mounting part (30), the first lower end (12) and the second lower end (22) being symmetrically arranged to form the second mounting part (40), the first middle section (13) and the second middle section (23) being symmetrically arranged, and the wall thickness of the first middle section (13) and the wall thickness of the second middle section (23) being uniform and equal.

4. The head tube according to claim 3, characterized in that, The first middle section (13) is provided with a first recess (131), and the second middle section (23) is provided with a second recess (231). The first recess (131) and the second recess (231) are smoothly connected to form the avoidance structure.

5. The head tube according to claim 3, characterized in that, The first upper end portion (11) is provided with a first limiting protrusion and a first arc-shaped surface. The first limiting protrusion is located at one end of the first arc-shaped surface away from the outer end face of the first upper end portion (11). The second upper end portion (21) is provided with a second limiting protrusion and a second arc-shaped surface. The second limiting protrusion is located at one end of the second arc-shaped surface away from the outer end face of the second upper end portion (21). The first limiting protrusion, the second limiting protrusion, the first arc-shaped surface and the second arc-shaped surface form the first mounting portion (30). And / or, the first lower end portion (12) is provided with a third limiting protrusion and a third arc-shaped surface, the third limiting protrusion being disposed at one end of the third arc-shaped surface away from the outer end face of the first lower end portion (12), the second lower end portion (22) is provided with a fourth limiting protrusion and a fourth arc-shaped surface, the fourth limiting protrusion being disposed at one end of the fourth arc-shaped surface away from the outer end face of the second lower end portion (22), the third limiting protrusion, the fourth limiting protrusion, the third arc-shaped surface and the fourth arc-shaped surface forming the second mounting portion (40).

6. The head tube according to claim 4, characterized in that, The first middle section (13) is provided with a first opening, and the first opening is located on the side of the first recess (131) near the first upper end (11). The second middle section (23) is provided with a second opening, and the second opening is located on the side of the second recess (231) near the second upper end (21). The first opening and the second opening are symmetrically arranged to form a thread hole (80).

7. The head tube according to any one of claims 1-6, characterized in that, The first head pipe structure (10) is provided with a first groove, and the second head pipe structure (20) is provided with a second groove. The first groove and the second groove form a water outlet (90), and the water outlet (90) is located on the side of the avoidance structure away from the first mounting part (30).

8. The head tube according to claim 7, characterized in that, The outlet (90) is elongated.

9. The head tube according to claim 8, characterized in that, The first head tube structure (10) and the second head tube structure (20) are connected by welding.

10. A vehicle, the vehicle comprising a front fork structure (2), the front fork structure (2) comprising a front fork body (201) and a cross fork (202), the front fork body (201) and the cross fork (202) being arranged at an angle, characterized in that, The vehicle also includes a head tube as described in any one of claims 1-9, wherein the head tube is fixedly connected to both the fork body (201) and the crossbar (202).

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