Hub of off-road vehicle

Abstract

The utility model discloses an off-road vehicle hub which comprises a first half ring, a middle disc and a second half ring which are sequentially connected, a positioning portion is arranged on the middle disc, the first half ring and the second half ring are respectively provided with a matching portion used for being matched with the positioning portion, the first half ring is detachably connected with the middle disc, and the second half ring is detachably connected with the middle disc. A first sealing piece is arranged between the middle disc and the first half ring, and a second sealing piece is arranged between the middle disc and the second half ring. The hub forming device has the advantages that the hub forming efficiency is high, the forming quality is reliable, and the air tightness of a rim can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of off-road wheels, in particular to a wheel hub of an off-road vehicle. Background Art

[0002] The wheel hub of an off-road vehicle is larger than that of an ordinary car, and is often processed by low-pressure casting. Low-pressure manufacturing uses a relatively small pressure to press the liquid alloy into the mold to make the molecules evenly distributed, with fewer sand holes, and the shape can be more complex and refined. However, due to the large size of the off-road wheel hub, it is difficult to form it at the rim, resulting in a low yield rate.

[0003] The authorization announcement number of the Chinese patent application is CN217671955U, and a utility model patent named "A kind of off-road wheel hub" was disclosed on October 28, 2022. The application includes a front rim piece and a rear rim piece, and the middle rim piece is arranged between the front rim piece and the rear rim piece and is welded into one body; the front rim piece has a first connecting ring, and the rear rim piece has a second connecting ring. The rim piece has a top ring welded to the first connecting ring and the second connecting ring, and a spoke surface integrally formed with it is provided inside the top ring. This hub structure divides the entire hub into several parts and then processes them separately and welds them together.

[0004] The shortcomings of the prior art are that the first connecting ring and the second connecting ring are respectively welded to the top ring, and it is very difficult to form a continuous and stable weld on a continuous circumference. When the welding quality is poor or uneven, there is a risk of rim cracking. In addition, during the welding process, the first connecting ring or the second connecting ring is often deformed due to thermal stress, resulting in a low forming rate of the off-road wheel hub. In addition, the high temperature generated by welding makes the temperature near the welding point of the off-road wheel hub high, and it is impossible to preset a sealing ring. The sealing of the connection can only be completed by applying sealant later, which is prone to cracks and affects the air tightness of the rim. Summary of the invention

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a wheel hub for an off-road vehicle, which has high wheel hub molding efficiency, reliable molding quality and can ensure the air tightness of the wheel rim.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A wheel hub for an off-road vehicle comprises a first half circle, a middle disk and a second half circle which are connected in sequence, a positioning portion being provided on the middle disk, and a matching portion for matching the positioning portion being provided on the first half circle and the second half circle. The first half circle and the middle disk are detachably connected, and the second half circle and the middle disk are detachably connected. A first sealing member is provided between the middle disk and the first half circle, and a second sealing member is provided between the middle disk and the second half circle.

[0008] The wheel hub for off-road vehicles disclosed in the present application adopts a split structure, including a first half circle, a middle plate and a second half circle. The outer periphery of the middle plate, the first half circle and the second half circle constitute the wheel rim, which is used to support the tire of the wheel. The three parts are formed separately, and the forming efficiency is high. When the first half circle and the second half circle are assembled on the middle plate, the matching part and the positioning part are first used for positioning, so that the first half circle and the second half circle can be quickly positioned relative to the middle plate, and then the three can be connected. When the three are connected, the first seal and the second seal can be set, which can ensure the air tightness of the rim. The wheel hub is easy to form and assemble, with high installation efficiency, and there will be no various problems of welding, and the forming quality is reliable.

[0009] Preferably, the first half circle includes an integrated first wheel flange and a first wheel rim, an end of the first wheel rim away from the first wheel flange is provided with a boss protruding toward the axis direction of the first wheel rim to form a matching portion, and two sides of the outer circumference of the middle disk are respectively provided with a support as a positioning portion, and the positioning portion overlaps and cooperates with the matching portion to form a positioning between the first half circle and the middle disk. The cooperation of the boss and the support serves as a matching positioning for connecting the first half circle and the middle disk, thereby improving the connection efficiency of the first half circle and the middle disk.

[0010] Preferably, a first round table surface is provided at the end of the boss, and a second round table surface is provided on the support, and the first round table surface abuts against the second round table surface. The first round table surface abuts against the second round table surface to form a match, and when the middle plate is connected to the first half circle, the round table surface forms a supporting force on the end of the boss toward the first half circle, so that the boss of the first half circle has a tendency to expand from the inside to the outside, and has a tendency to press the outer end of the first half circle against the support, so that the seam between the first outer circle and the outer periphery of the middle plate is compressed as much as possible, and a reliable connection between the two is achieved.

[0011] Preferably, the middle plate is connected to the first half circle by bolts, and the middle plate is connected to the second half circle by bolts, which is convenient for connection.

[0012] Preferably, a through first connection hole is provided on the first half circle, a through second connection hole is provided on the middle plate, and a through third connection hole is provided on the second half circle. The first connection hole, the second connection hole and the third connection hole are aligned and tightened by a bolt and nut assembly with threaded fit. The first half circle, the second half circle and the middle plate can be locked and connected together at one time, with high connection reliability and convenient installation.

[0013] Preferably, the mating portion is provided with a plurality of first connection holes distributed in a circumferential array around the axis of the first half circle, the support is provided with a plurality of second connection holes distributed in a circumferential array around the axis of the middle disk, and the first sealing member is located between the boss and the support, so as to play a reliable connection role and improve the tightness and uniformity of the connection at each radial position of the middle disk.

[0014] Preferably, the first half circle and the second half circle have the same shape, and are symmetrically arranged on opposite sides of the center disk. The first half circle and the second half circle have the same shape, can be formed using the same mold or process, and have no distinction in assembly position, which is more conducive to improving the forming efficiency of the wheel hub.

[0015] Preferably, the first half circle and the second half circle are both cold-pressed. In the prior art, the wheel hub cannot be directly cold-pressed because the center disk, the first half circle and the second half circle are integral structures, and can only be manufactured by low-pressure casting, which has low structural strength and is prone to product defects. However, the present application divides the rim into the first half circle, the center disk and the second half circle. The first half circle and the second half circle are both rotating body structures, and the structure is relatively simple, so they can be cold-pressed, have high structural strength, and high production efficiency.

[0016] Preferably, the first annular groove and the second annular groove are respectively provided on both sides of the middle disk, the first sealing member is a first sealing ring pressed tightly in the first annular groove by the first half circle, and the second sealing member is a second sealing ring pressed tightly in the second annular groove by the second half circle. When the first half circle and the second half circle are connected to the middle disk, the first half circle and the middle disk automatically press the first sealing ring into the first annular groove, and the second half circle and the middle disk automatically press the second sealing ring into the second annular groove, and the annular continuous structure of the first sealing ring and the second sealing ring realizes reliable sealing on both sides of the circumference of the middle disk.

[0017] Preferably, a valve hole is provided in the center disk, and the valve hole includes a first hole section parallel to the axial direction of the center disk and a second hole section located in the radial direction of the center disk, the first hole section and the second hole section are intersected and connected, the first hole section extends to the outside of the center disk, and the second hole section extends to the outer periphery of the center disk. The valve hole is integrated in the center disk to ensure the strength of the rim, and the center disk can be formed separately, with high production efficiency.

[0018] The utility model has the advantages that: 1. the hub molding efficiency is high; 2. the hub molding quality is reliable; 3. the air tightness of the rim can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a wheel hub of an off-road vehicle shown in one embodiment of the utility model.

[0020] Figure 2 yes Figure 1 A magnified schematic diagram of center A.

[0021] Figure 3 It is an exploded view of a cross-section of a wheel hub of an off-road vehicle shown in one embodiment of the utility model.

[0022] Figure 4 It is a structural schematic diagram of a center disc of a wheel hub of an off-road vehicle shown in one embodiment of the utility model.

[0023] In the figure: first half circle 1, first wheel flange 11, first wheel rim 12, boss 13, first round table surface 14, first connecting hole 15, first sealing member 16;

[0024] The middle plate 2, the support platform 21, the second round table surface 22, the second connecting hole 23, the valve hole 24, the first hole section 25, the second hole section 26, the first annular groove 27, and the second annular groove 28;

[0025] The second half circle 3, the second wheel flange 31, the second wheel rim 32, the third connecting hole 33, the second sealing member 34;

[0026] Bolt and nut assembly 4. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] As one of the embodiments of the present invention, a wheel hub of an off-road vehicle is provided. Figures 1 to 4 As shown, it includes a first half circle 1, a middle plate 2 and a second half circle 3 connected in sequence, a positioning portion is provided on the middle plate 2, and the first half circle 1 and the second half circle 3 are both provided with a matching portion for matching the positioning portion, the first half circle 1 and the middle plate 2 are detachably connected, the second half circle 3 and the middle plate 2 are detachably connected, a first seal 16 is provided between the middle plate 2 and the first half circle 1, and a second seal 34 is provided between the middle plate 2 and the second half circle 3.

[0029] The wheel hub for off-road vehicles disclosed in the utility model adopts a split structure, including a first half circle 1, a middle plate 2 and a second half circle 3. The outer periphery of the middle plate 2, the first half circle 1 and the second half circle 3 constitute the rim of the wheel, which is used to support the tire of the wheel. The three parts are formed separately, and the forming efficiency is high. Since the wheel hub is divided into three parts, and the spokes are integrated on the middle plate 2, the structure of each part is relatively simple. The integral hub structure in the prior art has a relatively complex structure and can only be formed by casting. The material cost, mold cost, equipment cost, environmental protection cost, etc. are high, and the manufacturing process is cumbersome and complicated. Compared with the traditional integral hub, since the structure of each part is relatively simple, the present application can form each part by different methods such as spinning, turning, cold pressing, etc., which greatly reduces the cost.

[0030] In the utility model, the first half circle 1 and the middle disk 2 are detachably connected, and the second half circle 3 and the middle disk 2 are detachably connected. The detachable connection methods include but are not limited to bolt connection, riveting connection, pin connection, etc. In order to improve the efficiency of detachable connection, the first half circle 1 and the second half circle 3 are respectively provided with matching parts in the present application, and the middle disk 2 is provided with a positioning part. When the first half circle 1 and the second half circle 3 are assembled on the middle disk 2, the matching parts and the positioning parts are first used for positioning, so that the first half circle 1 and the second half circle 3 can be quickly positioned relative to the middle disk 2, and then the three can be connected. The implementation methods of the matching parts and the positioning parts include but are not limited to the matching of the protrusion and the depression, the matching of the protruding ring and the ring groove, the positioning of the pin and the pin hole, etc. When the first half circle 1, the middle disk 2 and the second half circle 3 are connected, the first seal 16 and the second seal 34 can be set at the same time, which can ensure the air tightness of the rim, the hub molding and assembly are convenient, the installation efficiency is high, and there will be no various problems of welding, and the molding quality is reliable.

[0031] In the utility model, the first seal 16 is used to seal the connection gap between the first half circle 1 and the middle plate 2, and the second seal 34 is used to seal the connection gap between the second half circle 3 and the middle plate 2. As a preferred setting method, the first seal 16 is arranged at a position close to the outer periphery of the middle plate 2, and the second seal 34 is also arranged at a position close to the outer periphery of the middle plate 2, so as to ensure reliable sealing of the connection between the three.

[0032] As one of the embodiments of the present invention, a wheel hub of an off-road vehicle is provided. Figure 1 and Figure 2 As shown, it comprises a first half circle 1, a middle plate 2 and a second half circle 3 connected in sequence, a positioning portion is provided on the middle plate 2, and the first half circle 1 and the second half circle 3 are both provided with a matching portion for matching the positioning portion, the first half circle 1 and the middle plate 2 are detachably connected, the second half circle 3 and the middle plate 2 are detachably connected, a first sealing member 16 is provided between the middle plate 2 and the first half circle 1, and a second sealing member 34 is provided between the middle plate 2 and the second half circle 3. The first half circle 1 comprises an integral first wheel flange 11 and a first wheel rim 12, and a boss 13 protruding toward the axis direction of the first wheel rim 12 is provided at one end of the first wheel rim 12 away from the first wheel flange 11 to form a matching portion, and a support 21 is provided on both sides of the outer periphery of the middle plate 2 as a positioning portion, and the positioning portion overlaps and matches with the matching portion to form a positioning between the first half circle 1 and the middle plate 2. The thickness of the support 21 is less than the thickness of the middle plate 2 at the adjacent position to form a bearing groove on both sides of the support 21 that can accommodate the matching portion. Those skilled in the art can understand that the boss 13 and the support 21 as a positioning method can be replaced by a matching method of a bump and a groove, and the positions of the boss 13 and the support 21 can also be interchanged.

[0033] Furthermore, in this embodiment, the second half circle 3 includes an integrated second wheel flange 31 and a second wheel rim 32. The end of the second wheel rim 32 away from the second wheel flange 31 is provided with a boss 13 protruding in the axial direction of the second wheel rim 32 to form a mating portion, and the mating portion is overlapped with the positioning portion to form a positioning between the second half circle 3 and the middle disk 2.

[0034] In order to further improve the positioning function of the positioning part and the matching part, the end of the boss 13 is provided with a first round table surface 14, and the support 21 is provided with a second round table surface 22. The second round table surface 22 is a side groove wall of the bearing groove, and the first round table surface 14 abuts against the second round table surface 22. Figure 2 and Figure 3 As shown, the first conical surface 14, the bolts and the sealing rings that realize the detachable connection between the first half ring 1 and the middle disk 2 are sequentially arranged from the inside to the outside in the radial direction of the middle disk 2. When the first conical surface 14 and the second conical surface 22 cooperate, the bolts connect the boss 13 and the support 21. At this time, the pressure of the bolts makes the support 21 provide a force perpendicular to the first conical surface 14 and toward the first half ring 1 to the boss 13. The force can be decomposed into a first component located in the axial direction of the middle disk 2 and a second component located in the radial direction of the middle disk 2. The action of the first component makes the outer end of the boss 13, that is, the outer end connected to the first rim 12, pressed toward the support 21. The position of the first sealing member 16 is close to the outer end of the boss 13, so the sealing performance at this location is also improved. The cooperation of the first conical surface 14 and the second conical surface 22 also has a centering effect, which facilitates the connection of the first half ring 1 and the middle disk 2.

[0035] Those skilled in the art can understand that the boss 13 of the second half circle 3 is provided with a first circular table surface 14 that matches with the second circular table surface 22 on the other side of the middle plate 2 .

[0036] As one of the embodiments of the present invention, a wheel hub for an off-road vehicle is provided, comprising a first half circle 1, a middle plate 2, and a second half circle 3 connected in sequence, the middle plate 2 is provided with a positioning portion, the first half circle 1 and the second half circle 3 are provided with a matching portion for matching the positioning portion, the first half circle 1 and the middle plate 2 are detachably connected, the second half circle 3 and the middle plate 2 are detachably connected, a first sealing member 16 is provided between the middle plate 2 and the first half circle 1, and a second sealing member 34 is provided between the middle plate 2 and the second half circle 3. Figure 1 and Figure 3 As shown, the first half circle 1 and the second half circle 3 have the same shape, and the first half circle 1 and the second half circle 3 are symmetrically arranged on opposite sides of the middle plate 2. The first half circle 1 and the second half circle 3 of this solution have the same shape and size, and can be integrated into one part for generation. There is no need to consider whether there is a corresponding relationship during assembly, which greatly improves production efficiency and installation efficiency.

[0037] In this embodiment, the first half ring 1 and the second half ring 3 are both formed by cold pressing. The cold pressing process includes but is not limited to stamping. Taking the forming of the first half ring 1 as an example, a ring structure of suitable size is first selected, and after multiple stampings, one end of the ring structure is expanded, and finally a mold base of the first half ring 1 of the required shape is formed. After that, only the mold base needs to be fine-turned to obtain the first half ring 1 of the required size and accuracy. Compared with the existing wheels formed by casting, the cold-pressed first half ring 1 has higher structural strength and reliability.

[0038] As one of the embodiments of the present invention, a wheel hub for an off-road vehicle is provided, comprising a first half circle 1, a middle plate 2, and a second half circle 3 connected in sequence, the middle plate 2 is provided with a positioning portion, the first half circle 1 and the second half circle 3 are provided with a matching portion for matching the positioning portion, the first half circle 1 and the middle plate 2 are detachably connected, the second half circle 3 and the middle plate 2 are detachably connected, a first sealing member 16 is provided between the middle plate 2 and the first half circle 1, and a second sealing member 34 is provided between the middle plate 2 and the second half circle 3. Figure 1 , Figure 2 and Figure 3 As shown, the first annular groove 27 and the second annular groove 28 are respectively provided on both sides of the middle plate 2, the first sealing member 16 is a first sealing ring pressed by the first half ring 1 in the first annular groove 27, and the second sealing member 34 is a second sealing ring pressed by the second half ring 3 in the second annular groove 28. The first annular groove 27 and the second annular groove 28 are arranged on both sides of the middle plate 2 opposite to each other.

[0039] As a simple replacement of the above solution, the first annular groove 27 and the second annular groove 28 are respectively arranged on the first half ring 1 and the second half ring 3. Further, a convex ring is arranged on the middle plate 2 to correspond to the first annular groove 27 and the second annular groove 28 to ensure the compression and sealing effect on the first seal 16 and the second seal 34.

[0040] As one of the embodiments of the present invention, a wheel hub for an off-road vehicle is provided, comprising a first half circle 1, a middle plate 2, and a second half circle 3 connected in sequence, the middle plate 2 is provided with a positioning portion, the first half circle 1 and the second half circle 3 are provided with a matching portion for matching the positioning portion, the first half circle 1 and the middle plate 2 are detachably connected, the second half circle 3 and the middle plate 2 are detachably connected, a first sealing member 16 is provided between the middle plate 2 and the first half circle 1, and a second sealing member 34 is provided between the middle plate 2 and the second half circle 3. Figure 1 and Figure 2As shown, the first half circle 1 is provided with a through first connection hole 15, the middle plate 2 is provided with a through second connection hole 23, and the second half circle 3 is provided with a through third connection hole 33. The first connection hole 15, the second connection hole 23 and the third connection hole 33 are aligned and pressed by the threaded bolt and nut assembly 4. In the detachable connection structure disclosed in this embodiment, the first half circle 1, the middle plate 2 and the second half circle 3 can be fixed together by sequentially locking the bolt and nut assembly 4. The bolt and nut assembly 4 provides a pressing force on both sides of the middle plate 2, and the connection operation is convenient.

[0041] Furthermore, the matching portion of the first half circle 1 is provided with a plurality of first connection holes 15 distributed in a circumferential array around the axis of the first half circle 1, the support platform 21 is provided with a plurality of second connection holes 23 distributed in a circumferential array around the axis of the middle disk 2, and the first sealing member 16 is located between the boss 13 and the support platform 21. The matching portion of the second half circle 3 is provided with a plurality of third connection holes 33 distributed in a circumferential array around the axis of the second half circle 3, and the first connection holes 15, the second connection holes 23 and the third connection holes 33 correspond one to one. The one-to-one matching of the plurality of connection holes and the plurality of bolt and nut assemblies 4 provides a uniform locking effect in the peripheral direction of the middle disk 2.

[0042] In combination with the previous embodiment, when the bolt and nut assembly 4 is tightened after passing through the first connecting hole 15, the second connecting hole 23 and the third connecting hole 33, the first sealing member 16 and the second sealing member 34 can be pressed into place at the same time. Figure 4 In the example shown, thirty evenly distributed groups of bolt and nut assemblies 4 are provided to achieve reliable and uniform locking of the boss 13 and the support 21 , while also achieving synchronous and uniform locking of the first seal 16 and the second seal 34 .

[0043] Those skilled in the art can understand that, as a simple replacement for the above embodiment, the middle plate 2 is connected to the first half circle 1 by bolts, and the middle plate 2 is connected to the second half circle 3 by bolts.

[0044] As one of the embodiments of the present invention, a wheel hub for an off-road vehicle is provided, comprising a first half circle 1, a middle plate 2, and a second half circle 3 connected in sequence, the middle plate 2 is provided with a positioning portion, the first half circle 1 and the second half circle 3 are provided with a matching portion for matching the positioning portion, the first half circle 1 and the middle plate 2 are detachably connected, the second half circle 3 and the middle plate 2 are detachably connected, a first sealing member 16 is provided between the middle plate 2 and the first half circle 1, and a second sealing member 34 is provided between the middle plate 2 and the second half circle 3. Figure 1As shown, a valve hole 24 is provided in the middle plate 2, and the valve hole 24 includes a first hole section 25 parallel to the axial direction of the middle plate 2 and a second hole section 26 located in the radial direction of the middle plate 2. The first hole section 25 and the second hole section 26 are intersected and connected, the first hole section 25 extends to the outside of the middle plate 2, and the second hole section 26 extends to the outer periphery of the middle plate 2. The middle plate 2 integrates the spokes supporting the rim, and the valve hole 24 is also integrated in the middle plate 2. The valve hole 24 can be formed by drilling in two directions, and the arrangement is convenient.

Claims

1. A wheel hub for an off-road vehicle, characterized in that: It includes a first half circle, a middle disk and a second half circle connected in sequence, a positioning portion is provided on the middle disk, and the first half circle and the second half circle are both provided with a matching portion for matching the positioning portion. The first half circle and the middle disk are detachably connected, the second half circle and the middle disk are detachably connected, a first seal is provided between the middle disk and the first half circle, and a second seal is provided between the middle disk and the second half circle.

2. The wheel hub of an off-road vehicle according to claim 1, characterized in that: The first half circle includes an integrated first wheel flange and a first wheel rim. The end of the first wheel rim away from the first wheel flange is provided with a boss protruding toward the axis direction of the first wheel rim to form a matching portion. Both sides of the outer circumference of the middle plate are respectively provided with supporting platforms as positioning portions. The positioning portion and the matching portion overlap to form a positioning between the first half circle and the middle plate.

3. The wheel hub of an off-road vehicle according to claim 2, characterized in that: A first frustum surface is disposed at the end of the boss, a second frustum surface is disposed on the support, and the first frustum surface abuts against the second frustum surface.

4. The wheel hub of an off-road vehicle according to claim 1, characterized in that: The middle disk is connected to the first half circle by bolts, and the middle disk is connected to the second half circle by bolts.

5. The wheel hub of an off-road vehicle according to claim 2, characterized in that: The first half circle is provided with a through first connecting hole, the middle plate is provided with a through second connecting hole, and the second half circle is provided with a through third connecting hole. The first connecting hole, the second connecting hole and the third connecting hole are aligned and tightened by a bolt and nut assembly with threaded matching.

6. The wheel hub of an off-road vehicle according to claim 5, characterized in that: The matching portion is provided with a plurality of first connection holes distributed in a circular array around the first half circle axis, the support platform is provided with a plurality of second connection holes distributed in a circular array around the center disk axis, and the first sealing member is located between the boss and the support platform.

7. The wheel hub of an off-road vehicle according to any one of claims 1 to 6, characterized in that: The first half circle and the second half circle have the same shape, and the first half circle and the second half circle are symmetrically arranged on opposite sides of the middle disk.

8. The wheel hub of an off-road vehicle according to any one of claims 1 to 6, characterized in that: The first half circle and the second half circle are both cold-formed.

9. The wheel hub of an off-road vehicle according to any one of claims 1 to 6, characterized in that: The first annular groove and the second annular groove are respectively provided on both sides of the middle plate, the first sealing member is a first sealing ring pressed tightly in the first annular groove by a first half circle, and the second sealing member is a second sealing ring pressed tightly in the second annular groove by a second half circle.

10. The wheel hub of an off-road vehicle according to any one of claims 1 to 6, characterized in that: A valve hole is provided in the middle disk, and the valve hole includes a first hole section parallel to the axial direction of the middle disk and a second hole section located in the radial direction of the middle disk. The first hole section and the second hole section are intersected and connected. The first hole section extends to the outside of the middle disk, and the second hole section extends to the outer periphery of the middle disk.

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