Hub unit of large heavy-duty car

Abstract

The utility model discloses a large heavy-duty car hub unit which comprises a first connecting flange, a hub unit body and a titanium alloy reinforcing rib, the hub unit body is arranged on the left side of the first connecting flange, a second connecting flange is arranged on the right side of the hub unit body, and a third bolt is installed in an inner cavity of a third installation hole. A transmission cavity is formed in an inner cavity of the hub unit body, springs are arranged on the outer surfaces of the damping rods, and the titanium alloy reinforcing ribs are arranged at an interlayer of the inner cavity of the hub unit body. According to the large and heavy-duty car hub unit, vibration and impact force can be absorbed and dispersed through the damping rods and the springs when the hub unit moves, the impact force on a hub structure is reduced, the hub structure can be protected against overlarge stress and damage, and therefore the service life of the hub unit is prolonged; stress generated during torque transmission can be effectively dispersed in the interlayer of the hub unit body through the titanium alloy reinforcing ribs, stress concentration is avoided, the durability of the hub structure can be improved, and the fatigue life of the hub structure can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile hub units, in particular to a large and heavy automobile hub unit. Background Art

[0002] In the past, most car wheel hub bearings were used in pairs of single row tapered roller or ball bearings. With the development of technology, car wheel hub units have been widely used in cars, and the scope and amount of use of wheel hub bearing units are increasing.

[0003] For example, the patent document with application number 202121002217.8 discloses a heavy-duty automobile hub unit with a high-strength lock, including a flange, a roller rotatably mounted on the inner wall of the flange, a retaining frame and an inner ring respectively arranged on the outer surface of the roller, a residual groove arranged on the outer surface of the inner ring, a mounting groove arranged on the inner side surface of the inner ring, a fixing ring fixedly mounted on the outer surface of the mounting groove, a bearing hole arranged on the inner wall of the inner ring, and an end face arranged on the outer surface of the flange. The utility model fixes the position of the inner ring by setting a fixing ring, prevents the inner ring connection from loosening with the increase of use time, avoids internal grease leakage, and ensures that the inner ring can be used normally. By setting a residual groove, the grease can be stored when adding grease, and the grease on the edge of the roller can be supplemented during the rotation process to prevent the grease from being consumed too quickly and causing friction between the roller and the inner ring.

[0004] Similar to the wheel hub unit, heavy vehicles usually carry heavier loads due to the heavy cargo they transport, which makes the engine have higher power and greater output torque. As a result, the wheel hub unit needs to bear greater rotational torque. Excessive torque will increase the load on the wheel hub unit, increase the wear of the wheel hub unit, and cause the wheel hub unit to generate excessive heat, thus affecting its normal operation and increasing the risk of failure.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a large and heavy-duty automobile hub unit is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a large heavy-duty automobile wheel hub unit. Heavy vehicles usually carry heavier loads due to the heavy weight of the goods they transport, which makes the engine have higher power and greater output torque. As a result, the wheel hub unit needs to bear a greater rotational torque. Excessive torque will increase the load on the wheel hub unit, increase the wear of the wheel hub unit, and cause the wheel hub unit to generate excessive heat, thereby affecting its normal operation and increasing the risk of failure.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large and heavy-duty automobile hub unit, comprising a first connecting flange, a hub unit body and a titanium alloy reinforcing rib, a first mounting hole is provided on the surface of the first connecting flange, eight groups of the first mounting holes are provided, and a second mounting hole is provided on the inner side of the first mounting hole, several groups of the second mounting holes are provided, a second bolt is installed in the inner cavity of the second mounting hole, and a nut is provided on the outer surface of the second bolt, a first bolt is installed in the inner cavity of the first mounting hole, the hub unit body is provided on the left side of the first connecting flange, a second connecting flange is provided on the right side of the hub unit body, a third connecting flange is provided on the left side of the hub unit body, a third connecting flange is provided on the surface of the third connecting flange, a third bolt is installed in the inner cavity of the third mounting hole, a transmission cavity is provided in the inner cavity of the hub unit body, a damping rod is provided on the opposite surface of the second connecting flange and the third connecting flange, four groups of the damping rod are provided, a spring is provided on the outer surface of the damping rod, and the titanium alloy reinforcing rib is provided at the interlayer of the inner cavity of the hub unit body.

[0008] Furthermore, two ends of the hub unit body are respectively welded to the second connecting flange and the third connecting flange, and a plurality of groups of the first mounting holes are arranged in a circumferential manner at equal intervals.

[0009] Furthermore, the second mounting hole and the second bolt have the same diameter, and the second bolt is engaged with the nut by penetrating the second mounting hole.

[0010] Furthermore, two ends of the damping rod are connected to the second connecting flange and the third connecting flange respectively, and the outer surface of the damping rod abuts against the inner surface of the spring.

[0011] Furthermore, the positions of the second mounting hole and the third mounting hole are arranged at equal intervals, and the hole diameters of the third mounting hole and the third bolt are equal.

[0012] Furthermore, two groups of the damping rods are respectively arranged on both sides of the hub unit body, wherein the positions of the two groups of the damping rods correspond to the positions of the other two groups of the damping rods at the same level.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the vibration and impact force can be absorbed and dispersed by the damping rod and the spring when the wheel hub unit moves, thereby reducing the impact force on the wheel hub structure, helping to protect the wheel hub structure from excessive stress and damage, thereby extending its service life, and the titanium alloy reinforcement ribs in the wheel hub unit body interlayer can effectively disperse the stress generated during torque transmission, avoid stress concentration, and help improve the durability and fatigue life of the wheel hub structure. The specific contents are as follows:

[0014] A wheel hub unit body, a second connecting flange, a damping rod, a spring, a third connecting flange and titanium alloy reinforcement ribs are provided. Four groups of damping rods are connected to the second connecting flange and the third flange, so as to support the second connecting flange and the third flange on both sides of the wheel hub unit body. When the wheel hub unit generates vibration and impact force during movement, the damping rod will play a stabilizing and supporting role to prevent excessive vibration generated at the connection between the wheel hub unit and the stator and the wheel from being transmitted to the unit. At the same time, the spring will absorb these vibrations and impact forces through compression and expansion to slow down the transmission of impact force, which is helpful to protect the wheel hub from excessive stress and damage, disperse the torque transmission stress, increase stability and improve torsional resistance. The arrangement of titanium alloy reinforcement ribs can effectively disperse the stress generated during torque transmission in the interlayer of the wheel hub unit body to avoid stress concentration in specific parts, thereby reducing the stress area of ​​the structure, slowing down the decline in fatigue life, and effectively improving the durability and fatigue life of the wheel hub structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view structural diagram of a large and heavy-duty automobile hub unit of the utility model;

[0016] Figure 2 This is a schematic diagram of the side section structure of a large and heavy-duty automobile hub unit of the utility model;

[0017] Figure 3 This is a left-side structural schematic diagram of a large and heavy-duty vehicle hub unit of the utility model;

[0018] Figure 4 The utility model is a right side structural schematic diagram of a large and heavy-duty automobile hub unit.

[0019] In the figure: 1. first connecting flange; 2. first mounting hole; 3. first bolt; 4. wheel hub unit body; 5. second connecting flange; 51. second mounting hole; 52. nut; 6. second bolt; 7. damping rod; 8. spring; 9. third connecting flange; 10. third mounting hole; 11. third bolt; 12. transmission cavity; 13. titanium alloy reinforcement rib. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figures 1 to 4As shown, a large heavy-duty vehicle hub unit includes a first connecting flange 1, a hub unit body 4 and a titanium alloy reinforcing rib 13. The hub unit body 4 is arranged on the left side of the first connecting flange 1. The inner cavity of the hub unit body 4 is provided with a transmission cavity 12. The hub unit body 4 is connected to the wheel hub and the transmission system of the vehicle through the transmission cavity 12 to transmit the driving force and braking force of the vehicle. The surface of the first connecting flange 1 is provided with a first mounting hole 2. The first mounting hole 2 is provided with eight groups. The inner cavity of the first mounting hole 2 is installed with a first bolt 3. The positions of the plurality of groups of first mounting holes 2 are arranged in an equidistant manner. The first mounting holes 2 are annularly arranged around the surface of the first connecting flange 1 to provide a first bolt 3, and a second mounting hole 51 is opened on the inner side of the first mounting hole 2, and the second mounting hole 51 is provided with a plurality of groups, and the second mounting hole 51 provides a mounting position for the second bolt 6, and the second bolt 6 is installed in the inner cavity of the second mounting hole 51, and the positions of the second mounting hole 51 and the third mounting hole 10 are arranged in an equidistant manner, and the apertures of the second mounting hole 51 and the second bolt 6 are equal, and a nut 52 is provided on the outer surface of the second bolt 6, and the second bolt 6 is meshed with the nut 52 by passing through the second mounting hole 51, and the second bolt 6 is meshed with the nut 52 by passing through the second connecting flange 5 and the second mounting hole 51, so as to connect the second connecting flange 5 with the first connecting flange 1;

[0022] A third connecting flange 9 is provided on the left side of the wheel hub unit body 4, and the third connecting flange 9 is used to connect with the stator transmission system of the vehicle. A third mounting hole 10 is provided on the surface of the third connecting flange 9, and the aperture of the third mounting hole 10 is equal to that of the third bolt 11. The inner cavity of the third mounting hole 10 is installed with the third bolt 11, and the third mounting hole 10 provides an installation position for the third bolt 11. A second connecting flange 5 is provided on the right side of the wheel hub unit body 4, and the two ends of the wheel hub unit body 4 are respectively welded to the second connecting flange 5 and the third connecting flange 9, and the second connecting flange 5 is assembled with the first connecting flange 1 and welded to the wheel hub unit body 4;

[0023] Damping rods 7 are arranged on the opposite surfaces of the second connecting flange 5 and the third connecting flange 9, and four groups of damping rods 7 are arranged. The two ends of the damping rods 7 are respectively connected to the second connecting flange 5 and the third connecting flange 9. Two groups of damping rods 7 are respectively arranged on both sides of the hub unit body 4, wherein the positions of the two groups of damping rods 7 correspond to the positions of the other two groups of damping rods 7 at the same level. The damping rods 7 can absorb and reduce vibration and impact from the road surface during the driving of the car by connecting the second connecting flange 5 and the third connecting flange 9, reduce the impact on the hub unit, and improve the driving stability and comfort. The outer surface of the damping rod 7 is provided with a spring 8, and the titanium alloy reinforcement rib 13 is arranged at the interlayer of the inner cavity of the hub unit body 4. The outer surface of the damping rod 7 and the inner surface of the spring 8 are abutted against each other, and the spring 8 abuts against the outer surface of the damping rod 7 and the inner surface thereof, and absorbs and reduces vibration and impact force through the effects of compression and release, further improving the stability and comfort of the car during driving.

[0024] In summary, if Figures 1 to 4 As shown, the wheel hub unit of the large heavy-duty vehicle, the wheel hub unit body 4 is connected to the vehicle's transmission system through the transmission cavity 12 for movement, the wheel hub unit body 4 penetrates the second connecting flange 5 welded on the right side thereof and the second mounting hole 51 in the first connecting flange 1 through the second bolt 6, and is sleeved and meshed with the nut 52, so as to be connected and fixed with the first connecting flange 1, the first connecting flange 1 penetrates the first mounting hole 2 through the first bolt 3 and is connected to the vehicle's wheel, and the wheel hub unit body 4 penetrates the third mounting hole 10 through the third connecting flange 9 and the third bolt 11, so as to be installed in the vehicle stator transmission system When the wheel hub unit is subjected to torque force, the damping rod 7 is driven between the second connecting flange 5 and the third connecting flange 9 to slow down the excessive vibration generated at the connection between the wheel hub unit and the stator and the wheel through the viscous damping effect of the internal damping liquid. The spring 8 will be compressed or stretched to buffer and balance the effect of the torque force, slow down the transmission of impact force, thereby dispersing the torque transmission stress, and effectively bear the stress generated by the wheel hub unit when it is subjected to torque through the titanium alloy reinforcement rib 13 in the interlayer of the wheel hub unit body 4, thereby avoiding stress concentration leading to structural stress and slowing down the decline of fatigue life.

Claims

1. A large and heavy-duty automobile hub unit, comprising a first connecting flange (1), a hub unit body (4) and a titanium alloy reinforcing rib (13), characterized in that: A first mounting hole (2) is provided on the surface of the first connecting flange (1), and the first mounting hole (2) is provided in eight groups. A second mounting hole (51) is provided on the inner side of the first mounting hole (2), and the second mounting hole (51) is provided in a plurality of groups. A second bolt (6) is installed in the inner cavity of the second mounting hole (51), and a nut (52) is provided on the outer surface of the second bolt (6). A first bolt (3) is installed in the inner cavity of the first mounting hole (2). The hub unit body (4) is provided on the left side of the first connecting flange (1), and a second connecting flange (51) is provided on the right side of the hub unit body (4). 5), a third connecting flange (9) is arranged on the left side of the hub unit body (4), a third mounting hole (10) is provided on the surface of the third connecting flange (9), a third bolt (11) is installed in the inner cavity of the third mounting hole (10), a transmission cavity (12) is provided in the inner cavity of the hub unit body (4), a damping rod (7) is arranged on the opposite surface of the second connecting flange (5) and the third connecting flange (9), four groups of the damping rod (7) are arranged, a spring (8) is arranged on the outer surface of the damping rod (7), and the titanium alloy reinforcing rib (13) is arranged in the interlayer of the inner cavity of the hub unit body (4).

2. A large and heavy-duty vehicle hub unit according to claim 1, characterized in that: The two ends of the hub unit body (4) are respectively welded to the second connecting flange (5) and the third connecting flange (9), and the positions of a plurality of groups of the first mounting holes (2) are arranged in a circumferential manner at equal intervals.

3. A large and heavy-duty automobile wheel hub unit according to claim 1, characterized in that: The second mounting hole (51) and the second bolt (6) have the same diameter, and the second bolt (6) penetrates the second mounting hole (51) to mesh with the nut (52).

4. A large and heavy-duty vehicle wheel hub unit according to claim 2, characterized in that: The two ends of the damping rod (7) are respectively connected to the second connecting flange (5) and the third connecting flange (9), and the outer surface of the damping rod (7) and the inner surface of the spring (8) are in contact with each other.

5. A large and heavy-duty vehicle wheel hub unit according to claim 4, characterized in that: The positions of the second mounting holes (51) and the third mounting holes (10) are arranged at equal intervals, and the hole diameters of the third mounting holes (10) and the third bolts (11) are equal.

6. A large and heavy-duty automobile wheel hub unit according to claim 1, characterized in that: Two groups of damping rods (7) are respectively arranged on both sides of the hub unit body (4), wherein the positions of the two groups of damping rods (7) correspond to the positions of the other two groups of damping rods (7) at the same level.

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