Combined steel hub capable of easily guaranteeing high machining precision

Abstract

The utility model discloses a combined type steel hub capable of easily guaranteeing high machining precision, which comprises an axle hub, a rim coaxially arranged on the outer side of the axle hub and a spoke connected between the axle hub and the rim, and the outer side surface of a spoke connecting disc is attached to the inner side surface of an axle hub connecting disc and is locked through a plurality of rivets distributed in the circumferential direction; the circumferential outer wall of the connecting steel ring is attached to the circumferential inner wall face of the spoke and fixedly connected with the circumferential inner wall face of the spoke through a welding technology. According to the combined type steel hub capable of easily guaranteeing the high machining precision, the axle hub, the rim and the spoke are machined into a whole and are totally completed through one-time welding and multi-point riveting, so that the difficulty of a paint baking process is greatly reduced, and the problem that a traditional disc brake disc is too thin is solved; and meanwhile, the problem of machining deformation easily caused by repeated welding of the traditional combined steel hub is thoroughly solved, and the machining precision and the yield are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel parts, in particular to a combined steel wheel hub which is easy to ensure high processing accuracy. Background Art

[0002] The wheel hub is a metal component that supports the tire's inner profile. It is divided into two categories based on the material: steel wheel hub and aluminum alloy wheel hub. Aluminum alloy wheel hubs have the advantages of light weight, high manufacturing precision, high strength, low inertial resistance, strong heat dissipation ability and beautiful appearance, but have disadvantages such as high manufacturing cost and poor durability. Especially when used as a wheel core drive system or a hub drive system, the wheel hub usually adopts a cup-shaped structure, which will bring higher manufacturing costs in order to meet and achieve the requirements of reliability, bending moment resistance and strength. Steel wheel hubs have the advantages of meeting and achieving the requirements of reliability, bending moment resistance and strength at a lower cost, and are not easily deformed by impact loads and have strong durability.

[0003] Therefore, please refer to the Chinese utility model patent application number 2024205961199. The applicant has designed a combined steel wheel hub consisting of an axle hub, a rim and multiple spokes or multiple spoke plates. The spokes are made of steel pipes or steel plates. While ensuring the structural strength, the weight is greatly reduced to meet the lightweight design requirements and have better anti-collision performance.

[0004] However, the applicant found in production that each spoke or spoke plate must be welded in sequence, and the inner and outer ends need to be welded to the hub and rim respectively. Not only does it involve many welding steps and low production efficiency, but it is also extremely difficult to ensure the coaxiality of the hub and rim after welding, resulting in an extremely low yield rate. In addition, the above-mentioned combined steel hub has many and scattered welding points, which leads to the problem of difficult baking paint process.

[0005] Solving the above problems has become a top priority. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a combined steel wheel hub which is easy to ensure high processing accuracy.

[0007] The technical solution is as follows:

[0008] The first aspect of the present application relates to a combined steel wheel hub that is easy to ensure high processing accuracy, comprising an axle hub, a rim coaxially arranged outside the axle hub, and spokes connected between the axle hub and the rim, wherein the axle hub, the rim and the spokes are all made of steel, a circle of axle hub connecting disc is radially protruded on the outer peripheral surface of the axle hub, a spoke connecting disc adapted to the axle hub connecting disc is provided at the center of the spoke, the outer surface of the spoke connecting disc is in contact with the inner surface of the axle hub connecting disc, and is locked by a plurality of rivets distributed circumferentially;

[0009] The outer edge of the wheel spoke has a connecting steel ring matched with the wheel rim, the circumferential outer wall of the connecting steel ring is in contact with the circumferential inner wall of the wheel spoke, and the connection is fixed by welding.

[0010] The above combined steel wheel hub which is easy to ensure high processing accuracy has the following beneficial effects:

[0011] 1. The wheel hub and the spokes are matched with the wheel hub connecting plate of the disc structure and the spoke connecting plate of the disc structure, with high fit, and then locked by multiple rivets. It is not only simple and reliable in process, easy to implement, and high in production efficiency, but also can ensure the coaxiality of the wheel hub and the spokes, with high processing accuracy and high yield rate;

[0012] 2. The rim and the spoke are in contact through an annular surface with high fit, and then fixed by ring welding, which not only ensures the coaxiality of the rim and the spoke, but also has high processing accuracy and high yield rate, and high welding efficiency, further improving production efficiency;

[0013] 3. The hub, rim and spoke are processed as one through one welding and multi-point riveting, which not only greatly reduces the difficulty of the painting process, but also solves the problem of thin disc brake discs in the past. At the same time, it also completely solves the problem of processing deformation that is easy to occur in the combined steel hub due to multiple welding in the past, greatly improving the processing accuracy and yield rate.

[0014] In some embodiments, the rim includes a bead seat in an annular groove structure and a deepened groove bottom recessed at the bottom of the bead seat groove, and the circumferential outer wall of the connecting steel ring is fixedly connected to the bottom wall of the deepened groove bottom by a welding process.

[0015] In some embodiments, the inner edge of the spoke is folded inwardly along the axial direction to form a supporting flange, and the supporting flange is supported on the circumferential outer wall of the wheel axle hub.

[0016] In some embodiments, the spoke connecting plate protrudes outward near the supporting flange to form a connecting step surface that is compatible with the axle hub connecting plate. The outer surface of the connecting step surface is fitted with the inner surface of the axle hub connecting plate and is locked by multiple circumferentially distributed rivets. The supporting flange is formed on the inner edge of the connecting step surface.

[0017] In some embodiments, the outer surface of the wheel axle hub connecting plate has a plurality of bolt connection seats evenly distributed along the circumferential direction, each bolt connection seat is provided with a first bolt through hole, and the connecting step surface is provided with second bolt through holes corresponding to each other and connected to each first bolt through hole.

[0018] In some embodiments, the spoke connecting plate protrudes from one side of the rim, and the connecting steel ring is connected to the spoke connecting plate by a plurality of bent spokes, so that the axle hub, rim and spokes are combined to form a powertrain installation space with a groove-shaped structure.

[0019] In some embodiments, the spokes are all recessed to form reinforcing rib grooves extending along the length direction thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the combined steel wheel hub;

[0021] Figure 2 It is a schematic diagram of the planar structure of the combined steel wheel hub;

[0022] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0023] Figure 4 is a schematic diagram of the structure of the rim;

[0024] Figure 5 It is a schematic diagram of the spoke structure;

[0025] Figure 6 It is a schematic diagram of the structure of the wheel axle hub. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with embodiments and drawings.

[0027] like Figure 1-Figure 6 As shown, a combined steel wheel hub that is easy to ensure high processing accuracy mainly includes a wheel hub 1, a rim 2 and a spoke 3. The wheel hub 1, the rim 2 and the spoke 3 are all made of steel, which has the advantages of low cost, high durability, and low deformation and wear. Among them, the rim 2 is coaxially arranged on the outer side of the wheel hub 1, and the spoke 3 is connected between the wheel hub 1 and the rim 2.

[0028] In this embodiment, a circle of wheel axle hub connecting disk 11 is formed on the outer peripheral surface of the wheel axle hub 1 in a radially protruding manner. The wheel axle hub connecting disk 11 is a disc structure. The center position of the spoke 3 has a spoke connecting disk 31 that is compatible with the wheel axle hub connecting disk 11. The spoke connecting disk 31 is also a disc structure. The outer surface of the spoke connecting disk 31 is in contact with the inner surface of the wheel axle hub connecting disk 11, and the spoke connecting disk 31 is locked with the wheel axle hub connecting disk 11 by multiple rivets 4 distributed circumferentially.

[0029] Therefore, the wheel axle hub 1 and the spoke 3 are matched with the wheel axle hub connecting disk 11 of the disc structure and the spoke connecting disk 31 of the disc structure, with a high degree of fit, and then locked by multiple rivets 4. It is not only simple and reliable in process, easy to implement, and has high production efficiency, but also can ensure the coaxiality of the wheel axle hub 1 and the spoke 3, with high processing accuracy, not prone to deformation problems, and high yield rate.

[0030] Furthermore, the rivets 4 are evenly distributed along the circumferential direction, which further improves the reliability of the connection between the spoke connecting disc 31 and the axle hub connecting disc 11 .

[0031] In this embodiment, the outer edge of the spoke 3 has a connecting steel ring 32 that is compatible with the rim 2. The connecting steel ring 32 is a circular thin plate structure, and the circumferential outer wall of the connecting steel ring 32 is in contact with the circumferential inner wall of the spoke 3. At the same time, the connecting steel ring 32 and the spoke 3 are fixedly connected by a welding process.

[0032] Therefore, the rim 2 and the spoke 3 are in contact through annular surfaces with a high degree of fit, and are then fixed through ring welding, which not only ensures the coaxiality of the rim 2 and the spoke, but also has high processing accuracy, is not prone to deformation problems, has a high yield rate, and has high welding efficiency, further improving production efficiency.

[0033] In this embodiment, the rim 2 is a traditional structure. Specifically, the rim 2 includes a bead seat 21 in an annular groove structure and a deepened groove bottom 22 recessed at the groove bottom of the bead seat 21, so as to ensure reliable installation of the tire. At the same time, the circumferential outer wall of the connecting steel ring 32 is fixedly connected to the bottom wall of the deepened groove bottom 22 by welding, which is easy to weld and fix, stable, reliable and durable.

[0034] Furthermore, the inner edge of the spoke 3 is folded inward along the axial direction to form a supporting flange 33, and the supporting flange 33 is supported on the circumferential outer wall of the axle hub 1, which can not only reliably limit the axle hub 1 and the spoke 3, but also further improve the coaxiality of the axle hub 1 and the spoke 3 to avoid the problem of processing deformation.

[0035] Furthermore, the spoke connection disk 31 protrudes outward near the support flange 33 to form a connection step surface 311 adapted to the axle hub connection disk 11, the outer surface of the connection step surface 311 is in contact with the inner surface of the axle hub connection disk 11, and the connection step surface 311 and the axle hub connection disk 11 are locked by a plurality of rivets 4 distributed in the circumferential direction, and the support flange 33 is formed on the inner edge of the connection step surface 311. Through such a design, not only can the structural strength of the connection step surface 311 be effectively improved, but also the installation positioning function is played, and the processing accuracy is improved.

[0036] Furthermore, the outer edge of the wheel axle hub connecting plate 11 is flush with the outer edge of the connecting step surface 311, which is easy to align during processing, further improving the processing accuracy.

[0037] In this embodiment, the outer surface of the wheel axle hub connecting plate 11 has a plurality of bolt connection seats 12 evenly distributed along the circumferential direction, each bolt connection seat 12 is provided with a first bolt through hole 121, and the connecting step surface 311 is provided with second bolt through holes 312 connected to each first bolt through hole 121, so that it can be matched with the counterpart through bolts, which is simple, reliable and easy to assemble.

[0038] Furthermore, each bolt connection seat 12 is formed on the outer peripheral surface of one end of the wheel axle hub 1 , thereby further improving the structural strength of each bolt connection seat 12 .

[0039] In this embodiment, the spoke connecting plate 31 protrudes from one side of the rim 2, and the connecting steel ring 32 is connected to the spoke connecting plate 31 by a plurality of bent spokes 34, so that the wheel axle hub 1, the rim 2 and the spokes 3 are surrounded by a powertrain installation space 4 with a groove-shaped structure. The powertrain installation space 4 is used to accommodate the powertrain. The powertrain can adopt a hub motor system or a wheel core motor system, which has good versatility and can be applied to ordinary two-wheeled vehicles, three-wheeled vehicles, agricultural machinery, engineering machinery, aerospace and automobiles.

[0040] Furthermore, the spokes 34 are all recessed to form reinforcing rib grooves 341 extending along the length direction thereof, thereby effectively improving the structural strength of the spokes 34 and further improving the structural strength of the spokes 3 .

[0041] In this embodiment, the wheel hub 1, the rim 2 and the spoke 3 are all integrally formed, which not only has high structural strength but also has high processing precision. The wheel hub 1, the rim 2 and the spoke 3 are processed into one piece through one welding and multi-point riveting, which not only greatly reduces the difficulty of the baking paint process, but also solves the problem of the thin disc brake disc in the past, and also completely solves the problem of processing deformation that is easy to occur in the past combined steel wheel hub due to multiple welding, greatly improving the processing precision and yield rate.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes fall within the scope of protection of the present invention.

Claims

1. A combined steel wheel hub that is easy to ensure high processing accuracy, comprising a wheel axle hub (1), a rim (2) coaxially arranged outside the wheel axle hub (1), and a spoke (3) connected between the wheel axle hub (1) and the rim (2), wherein the wheel axle hub (1), the rim (2) and the spoke (3) are all made of steel, and characterized in that: A circle of axle hub connecting disc (11) is formed on the outer peripheral surface of the axle hub (1) in a radially protruding manner, and a spoke connecting disc (31) adapted to the axle hub connecting disc (11) is provided at the center of the spoke (3), the outer surface of the spoke connecting disc (31) is fitted with the inner surface of the axle hub connecting disc (11) and is locked by a plurality of rivets (4) distributed in the circumferential direction; The outer edge of the wheel spoke (3) has a connecting steel ring (32) adapted to the wheel rim (2); the circumferential outer wall of the connecting steel ring (32) fits the circumferential inner wall of the wheel spoke (3) and is fixedly connected by a welding process.

2. The combined steel wheel hub that is easy to ensure high processing accuracy according to claim 1 is characterized in that: The wheel rim (2) comprises a bead seat (21) in an annular groove structure and a deepened groove bottom (22) recessed at the groove bottom position of the bead seat (21); the circumferential outer wall of the connecting steel ring (32) is fixedly connected to the bottom wall of the deepened groove bottom (22) by welding.

3. The combined steel wheel hub that is easy to ensure high processing accuracy according to claim 1 is characterized in that: The inner edge of the wheel spoke (3) is folded inwardly along the axial direction to form a supporting flange (33), and the supporting flange (33) is supported on the circumferential outer wall of the wheel axle hub (1).

4. The combined steel wheel hub that is easy to ensure high processing accuracy according to claim 3 is characterized in that: The spoke connecting disk (31) protrudes outward near the supporting flange (33) to form a connecting step surface (311) adapted to the axle hub connecting disk (11); the outer surface of the connecting step surface (311) fits with the inner surface of the axle hub connecting disk (11) and is locked by a plurality of rivets (4) distributed in the circumferential direction; the supporting flange (33) is formed on the inner edge of the connecting step surface (311).

5. The combined steel wheel hub that is easy to ensure high processing accuracy according to claim 4 is characterized in that: The outer surface of the wheel axle hub connecting plate (11) has a plurality of bolt connection seats (12) evenly distributed along the circumferential direction, each bolt connection seat (12) is provided with a first bolt through hole (121), and the connecting step surface (311) is provided with second bolt through holes (312) connected to each first bolt through hole (121) in a one-to-one correspondence.

6. The combined steel wheel hub that is easy to ensure high processing accuracy according to claim 1 is characterized in that: The spoke connecting disk (31) protrudes from one side of the rim (2), and the connecting steel ring (32) is connected to the spoke connecting disk (31) via a plurality of bent spokes (34), so that the wheel axle hub (1), the rim (2) and the spokes (3) are surrounded to form a powertrain installation space with a groove-shaped structure.

7. The combined steel wheel hub that is easy to ensure high processing accuracy according to claim 6 is characterized in that: The spokes (34) are all recessed to form reinforcing rib grooves (341) extending along their length direction.

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