CN219467465U - Wheel edge structure of single-stage reduction drive axle - Google Patents
Wheel edge structure of single-stage reduction drive axle Download PDFInfo
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- CN219467465U CN219467465U CN202320453124.XU CN202320453124U CN219467465U CN 219467465 U CN219467465 U CN 219467465U CN 202320453124 U CN202320453124 U CN 202320453124U CN 219467465 U CN219467465 U CN 219467465U
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- brake disc
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- hub bearing
- axle
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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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Abstract
The utility model provides a wheel edge structure of a single-stage reduction drive axle, which belongs to the technical field of disc drive axles and comprises an axle housing assembly, wherein a half axle is arranged in the axle housing assembly, and one end of the half axle penetrates out of the axle housing assembly and is outwards turned to form an outer flange edge; the outside cover of axle housing assembly is equipped with hub bearing, and hub bearing's outside cover is equipped with the brake disc assembly, and the tip of brake disc assembly inwards turns over has interior flange limit, and interior flange limit is located the outside of outer flange limit, and brake disc assembly, semi-axis and hub bearing link together through passing interior flange limit, outer flange limit and hub bearing's fastener one in proper order. The utility model has the advantages that the disassembly process of the whole brake disc assembly can be simplified, and the bearing and braking capacity of the brake disc assembly can be improved.
Description
Technical Field
The utility model belongs to the technical field of disc drive axles, and particularly relates to a wheel rim structure of a single-stage reduction drive axle.
Background
The drive axle assembly is positioned at the tail end of the automobile transmission system and basically has the functions of increasing the torque transmitted by the transmission shaft, distributing the torque to the left and right driving wheels and enabling the left and right driving wheels to have a differential function; meanwhile, because the drive axle assembly also bears the plumb force, the longitudinal force, the transverse force and the moment acted on the road surface and the frame, in the field of heavy-duty commercial vehicles, the main stream configuration of the drive axle assembly is still a disc drive axle in order to ensure that the bearing capacity and the reliability of the drive axle assembly meet the requirements.
At present, most of the existing disc drive axles adopt a structure that a brake disc is arranged on the inner side of a hub bearing and is connected and fixed with the hub, so that when the brake disc needs to be replaced after being greatly worn, the hub and the hub bearing have to be disassembled. However, in the process, because the mounting accuracy requirement of the rear axle hub bearing is very high, after-sale maintenance is difficult to meet the original factory assembly requirement of the hub bearing, so that the service life of the hub bearing is easily reduced when the brake disc is replaced by the drive axle, and the bearing capacity and the reliability of the drive axle are affected.
Therefore, the existing partial disc type drive axle starts to adopt a hub structure with a hub and a brake disc integrally designed, so that the problem that a hub bearing needs to be disassembled when the brake disc is replaced by the drive axle in the prior art is solved. However, in the practical application process, it is found that, because the disc-type drive axle often installs the end portion of the half shaft at the outer side of the end portion of the brake disc, when the brake disc is dismounted, although the hub bearing is not required to be dismounted, the half shaft is required to be dismounted first, and then the brake disc is dismounted; therefore, the existing disc-type drive axle still has the problems of complex brake disc disassembly process, low brake disc disassembly efficiency and the like.
Disclosure of Invention
The utility model aims to solve the problems of complex brake disc disassembly process, low brake disc disassembly efficiency and the like of the existing disc type drive axle, and provides and designs a wheel rim structure of a single-stage reduction drive axle so as to solve the problems and simplify the brake disc disassembly process.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: a wheel edge structure of a single-stage reduction drive axle comprises an axle housing assembly, wherein a half axle is arranged in the axle housing assembly, and one end of the half axle penetrates out of the axle housing assembly and is outwards turned to form an outer flange edge; the outside cover of axle housing assembly is equipped with hub bearing, and hub bearing's outside cover is equipped with the brake disc assembly, and the tip of brake disc assembly inwards turns over has interior flange limit, and interior flange limit is located the outside of outer flange limit, and brake disc assembly, semi-axis and hub bearing link together through passing interior flange limit, outer flange limit and hub bearing's fastener one in proper order. At this time, the brake disc assembly is arranged on the outer side of the half shaft, so that the half shaft does not need to be disassembled firstly when the brake disc assembly is disassembled, and the disassembly process of the whole brake disc assembly can be simplified, and the corresponding disassembly efficiency is improved.
Furthermore, at least two pre-fixing holes are formed in the outer flange edge of the half shaft, and the half shaft can be fixedly mounted on the hub bearing through a second fastener penetrating through the pre-fixing holes, so that when the whole hub structure is assembled, the half shaft can be pre-fixed on the hub bearing through the second fastener, and then the brake disc assembly, the half shaft and the hub bearing are connected together through the first fastener after the brake disc assembly is mounted.
Further, the inner surface of the inner flange edge is an end surface fixing surface I, and the end surface fixing surface I is abutted with the outer surface of the outer flange edge; the end face, close to the inner flange edge, of the hub bearing is an end face fixing face II, and the end face fixing face II is abutted with the inner surface of the outer flange edge; a first circumferential bearing surface is arranged at one end, close to the inner flange edge, of the inner wall of the brake disc assembly, a first circumferential supporting surface is arranged at one end, close to the inner flange edge, of the hub bearing, the first circumferential supporting surface is matched with the first circumferential bearing surface, and the matching between the brake disc assembly and the hub bearing is a main bearing part of the brake disc assembly.
Further, a second circumferential bearing surface is arranged in the middle of the inner wall of the brake disc assembly, and a second circumferential bearing surface is arranged at one end, far away from the inner flange edge, of the hub bearing and is matched with the second circumferential bearing surface. Even if the offset distance between the end face of the driving axle and the center of the tire is larger, the utility model can ensure the reliable bearing capacity of the whole driving axle through the cooperation of the parts.
Further, the distance between the first circumferential bearing surface and the second circumferential bearing surface is 85-100 mm, and the distance between the first circumferential support surface and the second circumferential support surface is 75-90 mm, so that the assembly manufacturability of the wheel rim structure meets the requirements.
Further, interference fit is formed between the second circumferential bearing surface and the second circumferential supporting surface, so that the brake disc assembly and the hub bearing can rotate together.
Further, the interference between the second circumferential bearing surface and the second circumferential supporting surface is equal to 0.1 mm or less than 0.1 mm.
Further, the inner ring of the hub bearing is in clearance fit with the axle head of the axle housing assembly, so that the hub bearing and the axle housing assembly can rotate relatively.
Further, the hub bearing is fixedly arranged on the axle head through a lock nut and a gasket, and the hub bearing is axially positioned through the lock nut and an axle shoulder arranged on the axle housing assembly.
Further, a disc brake assembly is mounted on the outer side of the axle housing assembly, and the disc brake assembly is matched with the brake disc assembly to achieve a braking effect.
From the above technical scheme, the utility model has the following advantages: firstly, compared with the wheel edge structure of the traditional single-stage reduction drive axle, the brake disc assembly is arranged on the outer side of the half axle in a sleeved mode, so that when the brake disc assembly is disassembled, the half axle does not need to be disassembled firstly, the disassembling process of the whole brake disc assembly is simplified, and the corresponding disassembling efficiency is improved; secondly, two groups of matching surfaces are arranged between the brake disc assembly and the hub bearing, so that the bearing braking capacity of the brake disc assembly is improved, and the bearing requirement of a drive axle can be met.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a specific embodiment of the present utility model;
FIG. 2 is a schematic illustration of the construction of a brake disc assembly of the present utility model;
FIG. 3 is a schematic view of a hub bearing according to the present utility model.
In the figure: 1. a brake disc assembly; 101. an end surface fixing surface I; 102. a first circumferential bearing surface; 103. a second circumferential bearing surface; 2. a half shaft; 3. a lock nut; 4. a gasket; 5. an axle housing assembly; 6. a hub bearing; 601. an end surface fixing surface II; 602. a first circumferential support surface; 603. a second circumferential support surface; 7. a first fastener; 8. a disc brake assembly; L-P, the distance between the first circumferential bearing surface and the second circumferential bearing surface; L-ZC, the distance between circumference supporting surface one and circumference supporting surface two.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 3, the utility model provides a wheel rim structure of a single-stage reduction drive axle, which comprises an axle housing assembly 5, wherein a half axle 2 is arranged in the axle housing assembly 5, one end of the half axle 2 penetrates out of the axle housing assembly and then is outwards turned to form an outer flange rim, and three pre-fixing holes and three fixing holes are uniformly formed in the circumferential direction of the outer flange rim.
The outer side of the axle housing assembly 5 is in clearance fit with a hub bearing 6, and at one end of the hub bearing 6, the axle housing assembly 5 is provided with a lock nut 3 and a gasket 4; at the other end of the hub bearing 6, the axle housing assembly 5 is provided with a shoulder, and the hub bearing 6 is axially positioned by the lock nut 3 and the shoulder provided on the axle housing assembly 5.
In addition, the brake disc assembly 1 is sleeved outside the hub bearing 6, one end of the brake disc assembly 1 is matched with the disc brake assembly 8, the other end of the brake disc assembly 1 is inwards turned to form an inner flange edge, and the inner flange edge is positioned outside the outer flange edge of the half shaft 2, so that the brake disc assembly 1, the half shaft 2 and the hub bearing 6 can be connected together through the first fastener 7 sequentially penetrating through the inner flange edge, the outer flange edge and the hub bearing 6, and the half shaft 2 does not need to be disassembled when the brake disc assembly 1 is disassembled because the brake disc assembly 1 is arranged outside the half shaft 2.
Specifically, the inner surface of the inner flange edge is set to be an end surface fixing surface one 101, and the end surface, close to the inner flange edge, of the hub bearing 6 is set to be an end surface fixing surface two 601; the first circumferential bearing surface 102 is arranged at one end, close to the inner flange edge, of the inner wall of the brake disc assembly 1, the second circumferential bearing surface 103 is arranged in the middle of the inner wall of the brake disc assembly 1, the first circumferential bearing surface 602 matched with the first circumferential bearing surface 102 is arranged at one end, close to the inner flange edge, of the hub bearing 6, and the second circumferential bearing surface 603 matched with the second circumferential bearing surface 103 is arranged at one end, far away from the inner flange edge, of the hub bearing 6. Meanwhile, in order to ensure that the assembly manufacturability of the whole wheel rim structure meets the requirements, the distance L-P between the first circumferential bearing surface 102 and the second circumferential bearing surface 103 arranged on the brake disc assembly 1 is 85-100 mm, and the distance L-ZC between the first circumferential support surface 602 and the second circumferential support surface 603 arranged on the hub bearing 6 is 75-90 mm.
When the brake disc assembly 1, the half shaft 2 and the hub bearing 6 are connected together, the first end surface fixing surface 101 is abutted against the outer surface of the outer flange edge, and the second end surface fixing surface 601 is abutted against the inner surface of the outer flange edge; the first circumferential support surface 602 is matched with the first circumferential bearing surface 102, the second circumferential support surface 603 is in interference fit with the second circumferential bearing surface 103, and the interference between the second circumferential bearing surface 103 and the second circumferential support surface 603 is equal to or less than 0.1 mm. At this time, the utility model can form two groups of matching surfaces between the brake disc assembly and the hub bearing, thereby improving the bearing braking capacity of the brake disc assembly 1 and ensuring that the bearing requirement of a drive axle can be met.
Furthermore, the specific assembly sequence of the utility model is:
step one, split charging of a brake disc assembly 1, an axle housing assembly 5 and a disc brake assembly 8 is carried out;
step two, a hub bearing 6 is mounted on the axle housing assembly 5, and is fastened through a lock nut 3 and a gasket 4;
step three, firstly pre-fixing the half shaft 2 on the hub bearing 6 through a fastener II penetrating through the pre-fixing hole, then mounting the brake disc assembly 1 on the hub bearing 6, and fixing the brake disc assembly 1 and the half shaft 2 on the hub bearing 6 through a fastener I7;
and step four, assembling the disc brake assembly 8 to the axle housing assembly 5, thereby completing the assembly of the whole wheel rim structure.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A wheel edge structure of a single-stage reduction drive axle comprises an axle housing assembly, wherein a half axle is arranged in the axle housing assembly, and one end of the half axle penetrates out of the axle housing assembly and is outwards turned to form an outer flange edge; the outer side of the axle housing assembly is sleeved with a hub bearing, the outer side of the hub bearing is sleeved with a brake disc assembly, and the end part of the brake disc assembly is inwards turned to form an inner flange; the brake disc assembly is characterized in that the inner flange edge is positioned on the outer side of the outer flange edge, and the brake disc assembly, the half shaft and the hub bearing are connected together through a first fastener which sequentially penetrates through the inner flange edge, the outer flange edge and the hub bearing.
2. The wheel side structure of a single-stage reduction drive axle according to claim 1, wherein the outer flange side of the half axle is provided with at least two pre-fixing holes, and the half axle can be fixedly mounted on the hub bearing by a second fastener passing through the pre-fixing holes.
3. The wheel rim structure of the single-stage reduction drive axle according to claim 1 or 2, wherein the inner surface of the inner flange rim is an end surface fixing surface one, and the end surface fixing surface one is abutted with the outer surface of the outer flange rim; the end face, close to the inner flange edge, of the hub bearing is an end face fixing face II, and the end face fixing face II is abutted with the inner surface of the outer flange edge; a first circumferential bearing surface is arranged at one end, close to the inner flange edge, of the inner wall of the brake disc assembly, and a first circumferential supporting surface is arranged at one end, close to the inner flange edge, of the hub bearing and is matched with the first circumferential bearing surface.
4. The wheel rim structure of the single-stage reduction drive axle according to claim 3, wherein a second circumferential bearing surface is arranged in the middle of the inner wall of the brake disc assembly, a second circumferential bearing surface is arranged at one end, far away from the inner flange rim, of the hub bearing, and the second circumferential bearing surface is matched with the second circumferential bearing surface.
5. The wheel side structure of the single-stage reduction drive axle according to claim 4, wherein a distance between the first circumferential bearing surface and the second circumferential bearing surface is 85 mm to 100 mm, and a distance between the first circumferential support surface and the second circumferential support surface is 75 mm to 90 mm.
6. The wheel rim structure of a single-stage reduction drive axle of claim 4, wherein the second circumferential bearing surface and the second circumferential support surface are in interference fit.
7. The wheel side structure of the single-stage reduction drive axle according to claim 6, wherein the interference between the second circumferential bearing surface and the second circumferential support surface is equal to 0.1 mm or less than 0.1 mm.
8. The wheel rim structure of a single-stage reduction drive axle according to claim 1 or 2, wherein an inner ring of the hub bearing is clearance fit with a stub shaft of the axle housing assembly.
9. The wheel side structure of a single-stage reduction drive axle according to claim 1 or 2, wherein the hub bearing is fastened to the axle head by a lock nut and a washer.
10. The wheel side structure of a single-stage reduction drive axle according to claim 1 or 2, wherein a disc brake assembly is mounted on an outer side of the axle housing assembly, and the disc brake assembly is engaged with the brake disc assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320453124.XU CN219467465U (en) | 2023-03-06 | 2023-03-06 | Wheel edge structure of single-stage reduction drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320453124.XU CN219467465U (en) | 2023-03-06 | 2023-03-06 | Wheel edge structure of single-stage reduction drive axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219467465U true CN219467465U (en) | 2023-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320453124.XU Active CN219467465U (en) | 2023-03-06 | 2023-03-06 | Wheel edge structure of single-stage reduction drive axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219467465U (en) |
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2023
- 2023-03-06 CN CN202320453124.XU patent/CN219467465U/en active Active
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