CN220809017U - Driving axle hub, hub unit assembly and driving axle - Google Patents
Driving axle hub, hub unit assembly and driving axle Download PDFInfo
- Publication number
- CN220809017U CN220809017U CN202322520673.7U CN202322520673U CN220809017U CN 220809017 U CN220809017 U CN 220809017U CN 202322520673 U CN202322520673 U CN 202322520673U CN 220809017 U CN220809017 U CN 220809017U
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- hub
- drive axle
- flange plate
- bearing hole
- support cylinder
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000013585 weight reducing agent Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 230000000670 limiting effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a drive axle hub, a hub unit assembly and a drive axle, wherein the drive axle hub comprises an inner support cylinder part and a flange plate positioned outside the inner support cylinder part, a plurality of bolt holes which are uniformly distributed in circumference are formed in the flange plate, a first bearing hole in an inner cavity of the inner support cylinder part is close to the inner end of the drive axle hub, a second bearing hole is close to the outer end of the drive axle hub, the inner diameter of the first bearing hole is larger than that of the second bearing hole, a plurality of weight reduction grooves are formed in one side end surface of the flange plate, an annular concave part is formed in the joint of the flange plate and the inner support cylinder part, a plurality of reinforcing connecting ribs which are arranged at intervals are arranged in the annular concave part, and a plurality of cylindrical peaks and inner valleys which are uniformly distributed in circumference are formed in the inner support cylinder part positioned at the outer end of the flange plate; the outer peripheral surface of the flange plate is provided with an annular baffle. The driving axle hub and hub unit assembly has high structural strength and light weight, so that the weight of the driving axle can be reduced, and the light weight of a vehicle is realized.
Description
Technical Field
The utility model relates to the technical field of drive axles, in particular to a drive axle hub, a hub unit assembly and a drive axle.
Background
The axle of the automobile is an important large assembly of the automobile, and bears the load on a full spring of the automobile, the plumb force, the longitudinal force, the transverse force and the moment thereof and the impact load which are given by the ground through wheels, a frame or a bearing type automobile body through a suspension; the drive axle also transmits the maximum torque in the drive train and the axle housing also receives the reaction torque. Wheels are arranged at two ends of the driving axle, hubs are arranged in the wheels, and the hubs are important safety parts for bearing and rotating the wheels.
In recent years, along with the push of weight-based charge and fuel tax policies, in order to save energy and reduce consumption, reduce exhaust emission, improve the dynamic performance of vehicles, and modern trucks are developing to be light-weight. The weight reduction of the hub has important significance. However, the hub is a rotating shell structure which is subjected to random fatigue loads, and the transmission of various loads to the hub during truck driving is quite complex, so that the complexity of the geometric shape and mechanical characteristics of the hub brings great difficulty to research work, and a hub supplier with high research and development strength is required to provide lighter, more efficient, more reliable and safer high-quality castings.
At present, two general methods are adopted, one is to use lighter component materials, the main stream is to replace iron with aluminum, the weight reduction is achieved because the density of aluminum is much lighter than that of iron, but the cost is increased because of the higher price of aluminum materials, and the competitive advantage is reduced. The other method is to apply high-strength materials, and to remove redundant materials to achieve the purpose of weight reduction by optimizing the structure of cast iron parts, and the other method is to integrate the parts, so that the use of connecting pieces can be reduced, the weight can be reduced, the assembly process can be reduced, the cost can be reduced, and meanwhile, the quality stability of the parts can be greatly improved.
In order to control the cost and improve the competitive advantage, the optimization design is preferably carried out on the integration of the structure and the parts of the hub by combining the measures for lightening the hub, and the hub unit have higher strength on the basis of lightening the hub and the hub unit.
Disclosure of utility model
In order to overcome the defects in the prior art, the technical problem to be solved by the utility model is to provide the drive axle hub, the hub unit assembly and the drive axle, which not only can realize the light weight of the drive axle hub and the hub unit, but also have higher strength, thereby reducing the weight of the drive axle and realizing the light weight of a vehicle.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The utility model provides a transaxle wheel hub, includes interior support tube portion and is located the ring flange outside the interior support tube portion, offer a plurality of bolt holes that supply wheel bolt to install on the ring flange, a plurality of the bolt hole is around interior axis circumference equipartition of supporting tube portion is in on the ring flange, interior support tube portion inner chamber includes first bearing hole and second bearing hole, first bearing hole is close to transaxle wheel hub's inner, the second bearing hole is close to transaxle wheel hub's outer end, its characterized in that:
The first bearing bore has an inner diameter greater than an inner diameter of the second bearing bore,
A plurality of weight-reducing grooves are arranged on one side end surface of the flange plate, the weight-reducing grooves avoid the bolt holes,
An annular concave part is arranged at the joint of the flange plate and the inner support cylinder part, a plurality of reinforcing connecting ribs which are arranged at intervals are arranged in the annular concave part,
The inner support cylinder part positioned at the outer end of the flange plate is provided with a plurality of cylindrical convex peaks which are uniformly distributed in the circumferential direction, an inner valley is formed between two adjacent cylindrical convex peaks, and the inner valley is gradually thickened and transited to the cylindrical convex peaks from the valley bottom position;
the outer peripheral surface of the flange plate is provided with an annular baffle.
Preferably: the weight reducing grooves are uniformly distributed around the circumference of the axis of the inner support cylinder part, and the weight reducing grooves and the bolt holes are alternately arranged on the inner end face of the flange plate.
Preferably: the flange plate outer end face is fixedly provided with a plurality of supporting clamping blocks which are arranged at intervals and used for supporting a rim, a plurality of supporting clamping blocks are uniformly distributed around the circumference of the axis of the inner supporting cylinder part, the outer side face of each supporting clamping block is provided with an arc face, and the arc faces of the supporting clamping blocks are co-cylindrical faces.
Preferably: the driving axle hub is cast by adopting aluminum alloy.
A hub unit assembly, characterized in that: the driving axle hub comprises a driving axle hub body, a first tapered roller bearing is arranged in a first bearing hole, a second tapered roller bearing is arranged in a second bearing hole, an inner ring of the first tapered roller bearing is fixedly connected with an inner ring of the second tapered roller bearing, a first oil seal assembly is fixed between the inner ring of the first tapered roller bearing and the inner cavity wall of the inner supporting cylinder part, and a second oil seal assembly is fixed between the inner ring of the second tapered roller bearing and the inner cavity wall of the inner supporting cylinder part.
A drive axle, characterized in that: comprises the hub unit assembly.
Preferably: the drive axle comprises a first rim, a second rim, a brake drum and a speed reducer shell, wheel bolts fix the hub unit, the speed reducer shell, the brake drum, the first rim and the second rim together, and the brake drum is located in the first rim.
After the technical scheme is adopted, the utility model has the beneficial effects that:
The drive axle hub disclosed by the utility model is designed by means of finite element analysis and combines a road test experiment to analyze a high-load part and a low-load part, so that the strength of the high-load part is enhanced, and the materials of the low-load part are reduced as much as possible. Because the load that receives of transaxle wheel hub's outer end is less than the load that receives of inner relatively, and interior support tube portion first bearing hole is close to transaxle wheel hub's inner, and the second bearing hole is close to transaxle wheel hub's outer end, consequently, the bearing capacity that needs to install in first bearing hole is higher, selects the bearing specification that uses in first bearing hole to be greater than the bearing specification that selects in the second bearing hole promptly, and then, the internal diameter of first bearing hole is greater than the internal diameter of second bearing hole.
Because be provided with a plurality of heavy recesses that subtract on the one side terminal surface of ring flange, a plurality of heavy recesses avoid the bolt hole, and ring-shaped depressed part is provided with to ring flange and interior support tube portion junction, is provided with the strengthening connection muscle that a plurality of intervals set up in the ring-shaped depressed part. The weight-reducing groove and the annular concave part are used for reducing the weight of the drive axle hub, the reinforcing connecting ribs are used for improving the connection reliability of the flange plate and the inner support cylinder part, and the strength of the drive axle hub is enhanced.
The annular baffle is arranged on the outer peripheral surface of the flange, so that on one hand, the axial limiting effect can be achieved, namely, the limiting wheel hub axially moves relative to the brake drum, on the other hand, the radial dimension near the inner end of the flange is increased, namely, the strength of the flange near the bolt hole of the flange is enhanced, and the drive axle wheel hub can be prevented from being split from the edge of the flange, so that the strength of the drive axle wheel hub is improved.
When the drive axle hub is installed on a vehicle, the outer end face of the drive axle hub is fixedly connected with the flange of the half shaft through a flange connecting bolt. A plurality of bolt holes for installing flange connecting bolts are formed in the outer end face of the driving axle hub, and road test experiments prove that cracking is easy to occur near the bolt holes, so that cylindrical protruding peaks are arranged, the bolt holes are formed in the cylindrical protruding peaks, and the strength of the hub at the connecting bolt holes is improved. Meanwhile, the inner concave is arranged on two adjacent cylindrical convex peaks, so that the strength of the driving axle hub is ensured, and the weight of the driving axle hub is reduced as much as possible.
In summary, the drive axle hub analyzes the high load part and the low load part by means of finite element analysis and combines a road test experiment, so that the strength of the high load part is enhanced, the materials of the low load part are reduced as much as possible, the manufacturability and the practicability of the hub are not lost, the weight of the optimized hub is lightened, the function and the use requirement of the hub are met, the drive axle hub achieves the structural strength requirement and the weight reduction of the hub, and the purposes of lightening the hub unit and the drive axle, and lightening the weight, saving oil and energy and reducing emission of a vehicle are achieved.
Drawings
FIG. 1 is a cross-sectional view of a drive axle hub of the present utility model;
FIG. 2 is a perspective view of the drive axle hub of the present utility model;
FIG. 3 is a perspective view of another perspective of the drive axle hub of the present utility model;
FIG. 4 is a schematic view of the structure of the hub unit of the present utility model (with parts omitted);
FIG. 5 is a schematic view of the structure of the drive axle of the present utility model (with parts omitted);
In the figure:
1. an inner support cylinder; 101. a first bearing hole; 102. a second bearing hole; 103. an annular recessed portion; 104. reinforcing the connecting ribs; 105. cylindrical peaks; 106. an inner valley; 2. a flange plate; 201. a weight-reducing groove; 202. an annular baffle; 3. wheel bolts; 4. bolt holes; 5. supporting the clamping block; 6. a first tapered roller bearing; 7. a second tapered roller bearing; 8. a first oil seal assembly; 9. a second oil seal assembly; 10. a first rim; 11. a second rim; 12. a brake drum; A. a hub unit;
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples.
In the description of the present utility model, it should be understood that the directions or positional relationships described in "upper", "lower", "left", "right", "front", "rear", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, terms such as "first," "second," and other numerical terms when used in the context do not imply a sequence or order unless clearly indicated by the context.
In the vehicle, the direction of the cabin area between the two wheels is taken as 'inside', and the areas on the two sides of the cabin are 'outside'. In fig. 1, the left side is the outer end of the drive axle hub and the right side is the inner end of the drive axle hub.
The axle hub as shown in fig. 1 to 3 comprises an inner supporting cylinder part 1 and a flange plate 2 positioned outside the inner supporting cylinder part 1, wherein a plurality of bolt holes 4 for installing wheel bolts are formed in the flange plate 2, the plurality of bolt holes 4 are uniformly distributed on the flange plate 2 around the axis circumference of the inner supporting cylinder part 1, an inner cavity of the inner supporting cylinder part 1 comprises a first bearing hole 101 and a second bearing hole 102, the first bearing hole 101 is close to the inner end of the axle hub, the second bearing hole 102 is close to the outer end of the axle hub, the inner diameter of the first bearing hole 101 is larger than the inner diameter of the second bearing hole 102, and therefore, the size of a first tapered roller bearing 6 correspondingly installed is larger than the size of a second tapered roller bearing 7.
Because the end face of one side of the flange plate 2 is provided with the plurality of weight-reducing grooves 201, the plurality of weight-reducing grooves 201 avoid the bolt holes 4, the joint of the flange plate 2 and the inner support cylinder part 1 is provided with the annular concave part 103, and the annular concave part 103 is internally provided with the plurality of reinforcing connecting ribs 104 which are arranged at intervals. The weight-reducing groove 201 and the annular concave part 103 are used for reducing the weight of the drive axle hub, the reinforcing connecting ribs 104 are used for improving the connection reliability of the flange plate 2 and the inner support cylinder part 1, and the strength of the drive axle hub is enhanced.
The inner support cylinder part 1 positioned at the outer end of the flange plate 2 is provided with a plurality of cylindrical convex peaks 105 which are uniformly distributed in the circumferential direction, an inner valley 106 is formed between two adjacent cylindrical convex peaks 105, and the inner valley 106 is gradually thickened and transited to the cylindrical convex peaks 105 from the valley bottom position;
an annular baffle 202 is provided on the outer peripheral surface of the flange 2.
The driving axle hub is cast by aluminum alloy, so that the strength of the driving axle hub can be ensured while the weight is reduced.
The inner support cylinder part of the driving axle hub and the flange part of the hub adopt designs which are more favorable for force transmission, and the high-load part and the low-load part are analyzed according to finite element analysis and road test experiment results, so that the inner diameters of the first bearing hole and the second bearing hole are designed differently, and meanwhile, the flange and the inner support cylinder part are in transitional connection through the annular concave part, so that the weight is reduced. And the structural strength of the driving axle hub is enhanced by utilizing the first reinforcing rib, the cylindrical convex peak and the annular baffle of the flange plate. The strength of the high load part is enhanced, and the material of the low load part is removed, so that the weight of the drive axle hub is reduced on the premise of ensuring the safety of the vehicle.
The bolt holes 4 on the flange plate 2 are used for installing wheel bolts, the wheel bolts are used for connecting a brake drum, a hub, a speed reducer shell and a rim together, when a vehicle walks, the wheel rotates, the wheel bolts 3 can bear torque and shearing force, the flange plate is easy to crack from the bolt holes 4, and radial extension cracks appear, so that the radial cracks need to be prevented. Since the bolt holes 4 are near the outer peripheral surface of the flange, the strength of the flange 2 needs to be enhanced. The annular baffle table 202 is arranged on the outer peripheral surface of the flange plate 2, so that on one hand, the axial limiting effect can be achieved, namely, the limiting wheel hub axially moves relative to the brake drum, on the other hand, the radial dimension near the inner end of the flange plate is increased, namely, the strength of the flange plate near the bolt hole of the flange plate is enhanced, and the drive axle wheel hub can be prevented from being split from the edge of the flange plate, so that the strength of the drive axle wheel hub is improved.
When the hub is arranged on a vehicle, the outer end face of the hub of the drive axle is fixedly connected with the flange of the half axle through the flange connecting bolt. The outer end face of the drive axle hub is provided with a plurality of bolt holes for installing flange connecting bolts. Since the flange connecting bolt receives shearing force when the vehicle runs, the flange connecting bolt can transmit the received force to the bolt hole where the flange connecting bolt is located, and road test experiments prove that cracking is easy to occur near the bolt hole, therefore, the cylindrical protruding peak 105 is arranged and the bolt hole is formed in the cylindrical protruding peak 105, so that the strength of the hub at the connecting bolt hole is increased. To increase the strength of the hub at the bolt hole, a cylindrical boss is provided at the location. On the other hand, in order to reduce the weight, the inner valleys 106 are provided at the adjacent two cylindrical peaks 105. Therefore, the weight of the drive axle hub is reduced as much as possible while the strength of the drive axle hub is ensured.
The weight-reducing grooves 201 are uniformly distributed around the circumference of the axis of the inner support cylinder part 1, and the weight-reducing grooves 201 and the bolt holes 4 are alternately arranged on the inner end surface of the flange plate 2. The weight-reducing groove 201 is located at a position where the strength requirement on the flange is low, and therefore, in order to reduce the weight of the hub of the drive axle, the weight-reducing groove 201 is provided on the flange. Under the condition of not influencing the structural strength of the flange, the material is saved as much as possible, and the weight of the hub is reduced. The plurality of weight-reducing grooves 201 are uniformly distributed around the circumference of the axis of the inner support cylinder part 1, so that the flange plate is uniformly stressed.
The flange plate 2 is fixed with a plurality of support fixture blocks 5 that the interval set up of supporting rim on the outer terminal surface, and a plurality of support fixture blocks 5 are around the axis circumference equipartition of interior support drum portion 1, and the lateral surface of support fixture block 5 sets up to the cambered surface, and the cambered surface of a plurality of support fixture blocks 5 is the cylinder altogether. When the support fixture blocks are arranged on the axles, the outer cambered surfaces of the support fixture blocks 5 are attached to the inner walls of the middle holes of the two rims. The support fixture 5 is used for supporting two rims and a brake drum.
As shown in fig. 4, a hub unit assembly comprises a drive axle hub a, a first tapered roller bearing 6 is installed in a first bearing hole 101, a second tapered roller bearing 7 is installed in a second bearing hole 102, the inner ring of the first tapered roller bearing 6 is fixedly connected with the inner ring of the second tapered roller bearing 7, and the inner diameter of the first bearing hole 101 is larger than that of the second bearing hole 102, so that the first tapered roller bearing 6 is correspondingly installed with a specification larger than that of the second tapered roller bearing 7, the bearing capacity of a place with large bearing capacity of a hub unit is ensured, the bearing capacity of the place with small bearing capacity of the hub unit is properly reduced, the weight of the bearing specification is relatively light, the bearing capacity and strength of the hub unit assembly are ensured, the weight of the hub unit assembly is reduced, and the cost is saved. In addition, the first tapered roller bearing 6 and the second tapered roller bearing 7 are of different specifications, and the two tapered roller bearings are approximately in a stepped shaft structure as a whole, and the structure similar to the stepped shaft design is beneficial to solving the problem of stress concentration at the root of the shaft tube.
A first oil seal component 8 is fixed between the inner ring of the first tapered roller bearing 6 and the inner cavity wall of the inner supporting cylinder part 1, and a second oil seal component 9 is fixed between the inner ring of the second tapered roller bearing 7 and the inner cavity wall of the inner supporting cylinder part 1. Because the hub unit assembly uses the drive axle hub, the whole weight of the hub unit assembly can be reduced, the bearing function is met, the weight of the hub unit is reduced, and the cost is saved.
A drive axle as shown in fig. 5, comprising the above-described hub unit assembly, comprises a first rim 10, a second rim 11, a brake drum 12 and a reducer casing (not shown in the drawings), and wheel bolts 3 fix together the hub unit a, the reducer casing, the brake drum 12, the first rim 10 and the second rim 11, the brake drum being located in the first rim. The overall weight of the drive axle using the hub unit assembly described above is also reduced.
The utility model adopts a topological lightweight design, strengthens the strength of a high-load part by means of finite element analysis, reduces the materials of a low-load part as much as possible, does not lose the manufacturability and practicality of the hub, reduces the weight of the optimized drive axle hub, and simultaneously meets the functions and the use requirements of the drive axle hub.
Other structural forms of the related parts of the hub unit assembly (such as oil seals) may be adopted, and the above description is only a preferred embodiment of the present utility model, so long as other hub unit assemblies and drive axles including the drive axle hub of the present utility model are also within the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The utility model provides a transaxle wheel hub, includes interior support tube portion and is located the ring flange outside the interior support tube portion, offer a plurality of bolt holes that supply wheel bolt to install on the ring flange, a plurality of the bolt hole is around interior axis circumference equipartition of supporting tube portion is in on the ring flange, interior support tube portion inner chamber includes first bearing hole and second bearing hole, first bearing hole is close to transaxle wheel hub's inner, the second bearing hole is close to transaxle wheel hub's outer end, its characterized in that:
The first bearing bore has an inner diameter greater than an inner diameter of the second bearing bore,
A plurality of weight-reducing grooves are arranged on one side end surface of the flange plate, the weight-reducing grooves avoid the bolt holes,
An annular concave part is arranged at the joint of the flange plate and the inner support cylinder part, a plurality of reinforcing connecting ribs which are arranged at intervals are arranged in the annular concave part,
The inner support cylinder part positioned at the outer end of the flange plate is provided with a plurality of cylindrical convex peaks which are uniformly distributed in the circumferential direction, an inner valley is formed between two adjacent cylindrical convex peaks, and the inner valley is gradually thickened and transited to the cylindrical convex peaks from the valley bottom position;
the outer peripheral surface of the flange plate is provided with an annular baffle.
2. The drive axle hub as set forth in claim 1, wherein: the weight reducing grooves are uniformly distributed around the circumference of the axis of the inner support cylinder part, and the weight reducing grooves and the bolt holes are alternately arranged on the inner end face of the flange plate.
3. The drive axle hub as set forth in claim 1, wherein: the flange plate outer end face is fixedly provided with a plurality of supporting clamping blocks which are arranged at intervals and used for supporting a rim, a plurality of supporting clamping blocks are uniformly distributed around the circumference of the axis of the inner supporting cylinder part, the outer side face of each supporting clamping block is provided with an arc face, and the arc faces of the supporting clamping blocks are co-cylindrical faces.
4. A transaxle hub according to claim 3, wherein: the driving axle hub is cast by adopting aluminum alloy.
5. A hub unit assembly, characterized in that: the drive axle hub comprises the drive axle hub according to any one of claims 1-4, wherein a first tapered roller bearing is arranged in the first bearing hole, a second tapered roller bearing is arranged in the second bearing hole, the inner ring of the first tapered roller bearing is fixedly connected with the inner ring of the second tapered roller bearing, a first oil seal assembly is fixed between the inner ring of the first tapered roller bearing and the inner cavity wall of the inner support cylinder, and a second oil seal assembly is fixed between the inner ring of the second tapered roller bearing and the inner cavity wall of the inner support cylinder.
6. A drive axle, characterized in that: comprising the hub unit assembly of claim 5.
7. The drive axle of claim 6 wherein: the drive axle comprises a first rim, a second rim, a brake drum and a speed reducer shell, wheel bolts fix the hub unit, the speed reducer shell, the brake drum, the first rim and the second rim together, and the brake drum is located in the first rim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322520673.7U CN220809017U (en) | 2023-09-16 | 2023-09-16 | Driving axle hub, hub unit assembly and driving axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322520673.7U CN220809017U (en) | 2023-09-16 | 2023-09-16 | Driving axle hub, hub unit assembly and driving axle |
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| Publication Number | Publication Date |
|---|---|
| CN220809017U true CN220809017U (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322520673.7U Active CN220809017U (en) | 2023-09-16 | 2023-09-16 | Driving axle hub, hub unit assembly and driving axle |
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| CN (1) | CN220809017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118346726A (en) * | 2024-06-17 | 2024-07-16 | 山东浩信股份有限公司 | Split type brake disc wheel disc assembly and wheel end assembly thereof |
-
2023
- 2023-09-16 CN CN202322520673.7U patent/CN220809017U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118346726A (en) * | 2024-06-17 | 2024-07-16 | 山东浩信股份有限公司 | Split type brake disc wheel disc assembly and wheel end assembly thereof |
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