A structurally reinforced, anti-cracking rim

Abstract

The utility model discloses a structure reinforced formula prevents the spoke of cracking, including the rim body, the rim body one end is equipped with the flange, is equipped with the baffle ring groove another end, the baffle ring groove's groove bottom still is equipped with the circular slot, its characterized in that: the circular slot on is equipped with the reinforcing layer of preventing cracking, the utility model discloses reinforcing layer accurate paving welds in the circular arc groove stress concentration area, directly increases the thickness of this area to resist stress and vibration, significantly reduces the cracking and whole circle drop risk of baffle ring groove and nearby area, promotes the rim use safety.

Description

Technical Field

[0001] This utility model relates to the field of wheel rim manufacturing technology, specifically to a structurally reinforced, crack-resistant wheel rim. Background Technology

[0002] Traditional wheel rims are generally made using steel profile rolling technology. Due to their complex shape, they require multiple processing steps. Furthermore, the poor precision of the steel profiles makes automated production difficult. For example, the slag removal process after spot welding requires manual operation. Because the rim base material has poor precision and the welding allowance is high, the slag removal workload is large, resulting in low processing efficiency and high cost. At the same time, the oxide scale on the surface after rolling is thick, and the surface layer is rough after it falls off, resulting in poor appearance quality.

[0003] The retaining ring groove and weld seam of the formed wheel rim are stress concentration areas. In traditional structures, the thickness of this part is relatively thin, generally around 5mm. This makes it prone to cracking from the retaining ring groove, weld seam, or valve hole under load or vibration conditions, and there is even a risk of the entire rim falling off along the weld seam, which seriously affects the safety of use. Moreover, increasing the thickness would increase the manufacturing cost due to the high price of the steel material, and the overall weight of the wheel rim would also increase. Therefore, a structurally reinforced crack-resistant wheel rim is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a structurally reinforced, crack-resistant wheel rim to solve the above problems.

[0005] To achieve the above objectives, the following technical solution is provided: a structurally reinforced anti-cracking wheel rim, comprising a wheel rim body, wherein one end of the wheel rim body is provided with a rim flange and the other end is provided with a retaining ring groove, wherein the bottom of the retaining ring groove is also provided with an arc groove, characterized in that: an anti-cracking reinforcing layer is provided on the arc groove.

[0006] Preferably, the reinforcing layer is formed on the arc groove by a low-current lay-up welding process, and covers the arc groove and extends to the inner wall of the retaining ring groove to form a smooth transition.

[0007] Preferably, the bottom angle of the retaining ring groove is less than or equal to 90°.

[0008] Preferably, the rim body is an integral structure rim made of sheet metal through a cold rolling forming process.

[0009] The beneficial effects of this utility model are: the reinforcing layer is precisely welded to the stress concentration area of ​​the arc groove, directly increasing the thickness of the area to resist stress and vibration, significantly reducing the risk of cracking and detachment of the entire rim in the retaining ring groove and surrounding area, and improving the safety of the wheel rim in use.

[0010] The reinforcement layer is formed by low-current welding, which effectively reduces the heat input of welding, reduces the thermal impact on the rim body base material, avoids grain coarsening, hardness reduction or microcracks caused by high temperature, and ensures the stability of the mechanical properties of the base material. This process has high weld bonding strength, can effectively reduce defects such as porosity and slag inclusion, and the weld reinforcement height is controllable. The reinforcement layer forms a smooth transition with the inner wall of the arc groove and the retaining ring groove, which significantly improves the fatigue resistance of the stress concentration area. At the same time, it can effectively control the reinforcement height at the connection between the reinforcement layer and the rim body, reducing the amount of subsequent grinding work.

[0011] The rim body is made of sheet metal through a cold rolling forming process to form an integral structure, which is lower in cost than steel material. The sheet metal has high precision, which is easy to automate production. The smooth surface reduces subsequent processing steps and also reduces the overall weight of the rim.

[0012] The combination of cold roll forming and low-current lay-up welding process facilitates automated continuous production and improves processing efficiency. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the wheel rim body of this utility model;

[0014] Figure 2 This is a partial enlarged view of the present invention;

[0015] Figure 3 This is a cross-sectional view of the rim body according to another embodiment of this utility model;

[0016] Figure 4 This is a partial enlarged view of another embodiment of the present invention.

[0017] Legend: 1. Rim body; 11. Wheel flange; 12. Retaining ring groove; 121. Arc groove; 2. Reinforcing layer. Detailed Implementation

[0018] The following description, in conjunction with the accompanying drawings, further illustrates a structurally reinforced, crack-resistant wheel rim according to this utility model.

[0019] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] See appendix Figure 1-4 As shown, this embodiment of a structurally reinforced anti-cracking rim includes a rim body 1. One end of the rim body 1 is provided with a rim flange 11, and the other end is provided with a retaining ring groove 12. The bottom of the retaining ring groove 12 is also provided with an arc groove 121. The feature is that an anti-cracking reinforcing layer 2 is provided on the arc groove 121. One end of the rim body 1 is integrally formed with a rim flange 11 for limiting the axial displacement of the tire. The other end is provided with a retaining ring groove 12. The bottom of the retaining ring groove 12 is machined into an arc groove 121. The radius of the arc groove 121 can be designed according to the specifications of the rim body 1 to disperse stress. A reinforcing layer 2 is uniformly welded at the weakest position.

[0022] The reinforcing layer 2 is precisely welded to the stress concentration area of ​​the arc groove 121, directly increasing the thickness of the area to resist stress and vibration, significantly reducing the risk of cracking and detachment of the entire rim in the retaining ring groove 12 and surrounding areas, and improving the safety of the wheel rim.

[0023] In one embodiment, the reinforcing layer 2 is formed on the arc groove 121 by a low-current welding process, covering the arc groove 121 and extending to the inner wall of the retaining ring groove 12 to form a smooth transition; the rim body 1 is also connected by a low-current welding method after being cold rolled into a cylinder; both the reinforcing layer 2 and the rim body 1 use low-current welding parameters to ensure uniform and controllable heat input during welding, avoiding overheating and deformation of the base material; the welding material matches the material of the rim body 1, so that the reinforcing layer 2 is tightly fused with the surface of the arc groove 121 and the rim body 1 at the connection, and the surface of the reinforcing layer 2 is naturally connected to the inner wall of the retaining ring groove 12 to form a smooth transition, eliminating stress concentration points, controlling the welding excess height, and reducing the amount of subsequent grinding work.

[0024] The reinforcement layer 2 is formed by a low-current welding process, which effectively reduces the welding heat input, reduces the thermal impact on the base material of the rim body 1, avoids grain coarsening, hardness reduction or microcracks caused by high temperature, and ensures the stability of the mechanical properties of the base material. This process has high weld bonding strength, can effectively reduce defects such as porosity and slag inclusion, and the weld reinforcement height is controllable. The reinforcement layer 2 forms a smooth transition with the inner wall of the arc groove 121 and the retaining ring groove 12, which significantly improves the fatigue resistance of the stress concentration area. At the same time, it can effectively control the reinforcement height at the connection between the reinforcement layer 2 and the rim body 1, reducing the amount of subsequent grinding work.

[0025] In one embodiment, the bottom angle of the retaining ring groove 12 is less than or equal to 90° to accommodate the use of different wheels.

[0026] In one embodiment, the rim body 1 is an integral rim structure made of sheet metal through a cold rolling forming process. Sheet metal is cheaper than steel profiles, has smaller precision errors, and stronger plasticity. After cold rolling forming, it has high shape accuracy and can be flexibly made into rims of different thicknesses, saving materials and reducing weight. This process facilitates automated production, and the resulting smooth surface reduces subsequent processing steps. The rim body 1 is made of sheet metal through a cold rolling forming process, which is cheaper than steel profiles. The high precision of the sheet metal facilitates automated production, and the smooth surface reduces subsequent processing steps, while also reducing the overall weight of the rim. The combination of cold rolling forming and low-current welding process facilitates automated continuous production and improves processing efficiency.

[0027] During the production of this utility model, relying on the synergistic process of cold rolling forming and low-current welding, automated continuous production can be achieved. First, the metal sheet is gradually rolled into the basic shape of the rim body 1 with the rim 11, retaining ring groove 12 and arc groove 121 by the cold rolling forming equipment. At this time, the rim body 1 is not connected into a cylindrical shape and needs to be cut and transported to the welding station. The rim body 1 is welded into a whole by the low-current welding method by the automated welding equipment, and the reinforcing layer 2 is precisely welded at the arc groove 121. Finally, the production is completed through processes such as shaping, grinding and inspection. The whole process does not require a lot of manual intervention, the production stability is high, and the cost and environmental protection indicators can be effectively controlled.

[0028] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A structurally reinforced crack-resistant wheel rim, comprising a wheel rim body (1), wherein one end of the wheel rim body (1) is provided with a rim flange (11) and the other end is provided with a retaining ring groove (12), wherein the bottom of the retaining ring groove (12) is further provided with an arc groove (121), characterized in that: The circular arc groove (121) is provided with a crack-resistant reinforcing layer (2).

2. The structurally reinforced crack-resistant wheel rim according to claim 1, characterized in that: The reinforcing layer (2) is formed on the arc groove (121) by a low current welding process, and covers the arc groove (121) and extends to the inner wall of the retaining ring groove (12) to form a smooth transition.

3. The structurally reinforced crack-resistant wheel rim according to claim 1, characterized in that: The bottom angle of the retaining ring groove (12) is less than or equal to 90°.

4. The structurally reinforced crack-resistant wheel rim according to claim 1, characterized in that: The rim body (1) is an integral rim structure made of metal sheet through a cold rolling forming process.

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