CN115771485A - Wheel end structure and axle assembly - Google Patents
Wheel end structure and axle assembly Download PDFInfo
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- CN115771485A CN115771485A CN202111047826.XA CN202111047826A CN115771485A CN 115771485 A CN115771485 A CN 115771485A CN 202111047826 A CN202111047826 A CN 202111047826A CN 115771485 A CN115771485 A CN 115771485A
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- brake disc
- limiting
- end structure
- limiting part
- wheel
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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
Abstract
The invention discloses a wheel end structure and an axle assembly, wherein the wheel end structure comprises a brake disc and a wheel hub; the hub comprises a cylindrical part and a connecting part, the connecting part comprises a first end and a second end, a first clamping part, a first limiting part and a second limiting part are arranged on the outer surface of the second end, and the first limiting part and the second limiting part are mutually staggered along the axial direction of the connecting part; the brake disc comprises two side surfaces and an inner edge surface positioned between the inner edges of the two side surfaces; the second end of the connecting part is connected in a hole defined by the inner edge surface in a penetrating manner, a second clamping part is arranged on the inner edge surface, the second clamping part is matched with the first clamping part, and the first limiting part and the second limiting part are respectively positioned on two sides of the brake disc; and an installation gap is formed between the brake disc and the first limiting part and/or the second limiting part, and the installation gap is filled with an elastic element. The invention reduces the weight of the brake disc and the whole weight of the wheel end structure, and saves the cost; while ensuring the braking performance of the vehicle.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a wheel end structure and an axle assembly.
Background
The commercial vehicle axle assembly generally comprises an axle, a hub and a braking system, wherein the hub and the braking system are arranged at the end part of the axle to form a wheel end structure, and the braking system is generally divided into a drum brake and a disc brake, wherein the disc brake is widely applied due to excellent braking performance; in addition, because the brake disc has requirements of high temperature resistance and friction resistance, the brake disc is generally made of a special material with relatively high cost, and in order to be assembled with the hub, not only a flange needs to be arranged on the brake disc, but also a connecting section needs to be arranged between the main body part of the brake disc and the flange, so that the brake disc has relatively large weight, and the cost of the brake disc is relatively high.
Disclosure of Invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a wheel end structure that reduces the cost and weight of the wheel end structure.
The invention also aims to provide the axle assembly.
In order to achieve the first purpose, the invention adopts the following technical scheme:
the wheel end structure comprises a brake disc and a wheel hub;
the hub comprises a cylindrical part and an annular connecting part, the connecting part comprises a first end connected with the cylindrical part and a second end far away from the cylindrical part, the outer surface of the second end is provided with a first clamping part extending along the radial direction of the connecting part, a first limiting part and a second limiting part protruding out of the outer surface of the second end, and the first limiting part and the second limiting part are mutually staggered along the axial direction of the connecting part;
the brake disc is annular and comprises two opposite side surfaces and an inner edge surface positioned between the inner edges of the two side surfaces; the second end of the connecting part is connected in a hole defined by the inner edge surface in a penetrating manner, a second clamping part extending along the radial direction of the brake disc is arranged on the inner edge surface, the second clamping part and the first clamping part are matched to form a limiting mechanism for limiting the brake disc to rotate around the axis of the connecting part, and the first limiting part and the second limiting part are respectively positioned on two sides of the brake disc;
and an installation gap is formed between the brake disc and the first limiting part and/or the second limiting part, and the installation gap is filled with an elastic element.
The first clamping portion is a boss protruding outwards from the outer surface of the second end, the second clamping portion is a groove formed in the inner edge face of the brake disc, and the boss is embedded in the groove.
The outer surface of the second end is provided with a plurality of bosses arranged along the circumferential direction of the connecting part, a concave position is formed between every two adjacent bosses, a plurality of grooves arranged along the circumferential direction of the brake disc are arranged on the inner edge surface of the brake disc, a convex block is formed between every two adjacent grooves, the bosses are embedded in the grooves in a one-to-one correspondence mode, and the convex blocks are embedded in the concave positions in a one-to-one correspondence mode.
The first spacing portion is a limiting flange arranged on one side, close to the first end, of the boss, and the second spacing portion is a clamp spring fixed on one side, far away from the first end, of the boss.
The elastic element is a spring piece sleeved outside the second end, and the spring piece is wavy.
The boss is provided with a clamping groove, and the clamp spring is clamped in the clamping groove.
The first end of connecting portion is connected at the middle part surface of tube-shape portion, and forms a ventilation clearance between the surface of connecting portion and tube-shape portion, is provided with the ventilation hole of arranging along its circumference and communicating with the ventilation clearance on the connecting portion.
The inside mounting groove that is provided with respectively of both ends of tube-shape portion installs the bearing in the mounting groove.
And an ABS gear ring is arranged on the end surface of the second end of the connecting part.
In order to achieve the second purpose, the invention adopts the following technical scheme:
an axle assembly comprises the wheel end structure.
The invention has the beneficial effects that:
according to the invention, the connecting part is extended out of the hub and is inserted into the hole formed in the middle of the brake disc through the connecting part, so that the connecting part and the brake disc are clamped together without adopting bolts or arranging a flange and a connecting section on the brake disc, the brake disc is only of a disc structure, the weight of the brake disc and the whole weight of a wheel end structure are reduced, and the cost is saved; meanwhile, in the running process of the vehicle, the brake disc expands after being heated in a friction mode, a mounting gap is reserved between the connecting portion and the side face of the brake disc, the space for expanding the brake disc is reserved in the mounting gap, and when the brake disc expands, the elastic element contracts, so that large pressure cannot be generated between the brake disc and the connecting portion, the brake disc is prevented from cracking in a heating state, when the brake disc is in a cold state, the brake disc is tightly pressed through the elastic element, the brake disc is prevented from moving, eccentric wear of the brake disc is prevented, and the braking performance of the vehicle is ensured.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
fig. 4 is a schematic structural view of the hub of fig. 1.
Detailed Description
The invention will be further described with reference to the following drawings and detailed description:
as shown in fig. 1, 2, and 3, a wheel end structure of the present invention includes a brake disc 20 and a wheel hub 10, where the wheel hub 10 includes a cylindrical portion 14 and a connecting portion 11, the cylindrical portion 14 is a main body portion of the wheel hub 10, the connecting portion 11 is in a ring shape and is used for connecting with the brake disc 20, the connecting portion 11 includes a first end 111 and a second end 112 opposite to the first end 111, the first end 111 is connected to the cylindrical portion 14, the second end 112 extends to an outside of an end 142 of the cylindrical portion 14 along an axial direction of the cylindrical portion 14, a boss 12 protruding outward along a radial direction of the connecting portion 11 is disposed on an outer surface of the second end 112 of the connecting portion 11, and a first limiting portion and a second limiting portion protruding outward are disposed on an outer surface of the second end 112, and the first limiting portion and the second limiting portion are staggered from each other by a certain distance along the axial direction of the connecting portion 11; the brake disc 20 is in a ring shape, and comprises two opposite side surfaces and an inner edge surface 201 positioned between inner edges of the two side surfaces, the inner diameter of a hole defined by the inner edge surface 201 is equivalent to the outer diameter of the second end 112 of the connecting part 11, the second end 112 of the connecting part 11 is connected in the hole defined by the inner edge surface 201 in a penetrating way, a groove 22 extending along the radial direction of the brake disc 20 is arranged on the inner edge surface 201, the boss 12 is just clamped in the groove 22, so that a limiting mechanism is formed by matching the boss 12 and the groove 22, the limiting mechanism is used for limiting the degree of freedom of the brake disc 20 rotating around the central axis of the connecting part 11 relative to the connecting part 11, meanwhile, after the brake disc 20 and the connecting part 11 are installed in place, the first limiting part and the second limiting part are respectively positioned at two sides of the brake disc 20, and the degree of freedom of the brake disc 20 moving along the axial direction of the connecting part 11 is limited by the first limiting part and the second limiting part, the distance between the first limiting part and the second limiting part is slightly larger than the thickness of the brake disc 20, when the brake disc 20 is installed between the first limiting part and the second limiting part, an installation gap is formed between each of two side faces of the brake disc 20 and the first limiting part and the second limiting part, a spring piece 40 is filled in each installation gap, each spring piece 40 has certain elasticity, specifically, the spring pieces are sleeved on an outer annular closed structure of the second end 112 and are wavy, after the spring pieces 40 are arranged in the installation gaps, the spring pieces 40 are extruded by the side faces of the brake disc 20 and the first limiting part and the second limiting part, and meanwhile, through the elastic stress of the spring pieces 40, the first limiting part and the second limiting part press the brake disc 20 tightly, so that the brake disc 20 is prevented from moving axially along the connecting part 11.
In the invention, because the connecting part 11 extends out of the hub 20 and is inserted into the hole formed in the middle of the brake disc 20 through the connecting part 11, the connecting part 11 and the brake disc 20 are clamped together without adopting bolt connection or arranging a flange and a connecting section on the brake disc 20, the brake disc 20 is only of a disc structure, the weight of the brake disc and the whole weight of a wheel end structure are reduced, and the cost is saved; meanwhile, in the running process of the vehicle, the brake disc 20 expands after being heated by friction, a mounting gap is reserved between the connecting part 11 and the side surface of the brake disc 20, a space for expanding the brake disc 20 is reserved in the mounting gap, and when the brake disc 20 expands, the elastic element contracts, so that large pressure cannot be generated between the brake disc 20 and the connecting part 11, the brake disc 20 is prevented from cracking in a heating state, when the brake disc 20 is in a cold state, the brake disc 20 is compressed by the elastic element, the brake disc 20 is prevented from moving, eccentric wear of the brake disc 20 is prevented, and the braking performance of the vehicle is ensured.
In a preferred embodiment of the present invention, a plurality of bosses 12 may be disposed on an outer surface of the second end 112 of the connecting portion 11, the plurality of bosses 12 are arranged along a circumferential direction of the connecting portion 11, such that a recess 13 is formed between two adjacent bosses 12, a plurality of grooves 22 arranged along the circumferential direction of the brake disc 20 are disposed on the inner edge surface 201 of the brake disc 20, a protrusion 21 is formed between two adjacent grooves 22, the plurality of bosses 12 are correspondingly embedded in the plurality of grooves 22, and the plurality of protrusions 21 are correspondingly embedded in the plurality of recesses 13, such that a plurality of limiting mechanisms are formed along the circumferential direction of the brake disc 20 and the connecting portion 11, and the brake disc 20 and the connecting portion 11 are mounted together in a manner similar to a spline connection. Of course, in other embodiments, a boss may be disposed on the inner edge surface 201 of the brake disc 20, and a groove may be correspondingly disposed on the outer surface of the connecting portion 11, so as to achieve the purpose of clamping the brake disc 20 and the connecting portion 11 together.
In order to make the structure of the whole wheel end more compact and facilitate assembly, the first limiting part is arranged on the limiting flange 15 at one side of the boss 12 close to the first end 111 of the connecting part 11, the second limiting part is the clamp spring 30 fixed at one side of the boss 12 far away from the first end 111 of the connecting part 11, when the wheel end is assembled, one spring piece 40 is firstly sleeved on the connecting part 11, the spring piece 40 is abutted against the limiting flange 15, then the brake disc 20 is sleeved on the connecting part 11, the boss 12 is clamped in the groove 22, the other spring piece 40 is sleeved on the connecting part 11, and finally, the clamp spring 30 is fixed on the connecting part 11. A snap groove 16 is formed on the boss 12, and a snap spring 30 is snapped in the snap groove 16.
It should be noted that the first and second limiting parts are not limited to the limiting flange 15 and the circlip 30, and the first and second limiting parts may have other configurations in order to limit the axial position of the brake disc 20 in the connecting part 11, and in short, the first and second limiting parts may be engaged with the side surface of the brake disc 20 to press the spring piece 40. In addition, in the above solution of the present invention, the spring pieces 40 are disposed on two sides of the brake disc 20, so that when the brake disc 20 is in a cold state, the brake disc 20 is pressed by the spring pieces 40 on two sides, and when the brake disc 20 is in a high temperature state, an expansion space is reserved for the brake disc 20 by contraction of the spring pieces 40, so as to prevent the brake disc 20 and the connecting portion 11 from being rigidly matched in the axial direction of the connecting portion 11; in fact, the spring plate 40 may be provided only on one side of the brake disc 20, that is, the mounting gap may be formed on one side of the brake disc 20, for example, the spring plate 40 may be provided only between the brake disc 20 and the limit flange 15, the brake disc 20 and the clamp spring 30 are directly press-fitted, the spring plate 40 is not limited to the above-mentioned structure, and other elastic elements may be used instead, and in any case, the spring plate 20 may be pressed.
In another preferred embodiment, the first end 111 of the connecting part 11 of the present invention is connected to the outer surface of the middle part of the cylindrical part 14, the second end 112 of the connecting part 11 extends to the outside of the end 142 of the cylindrical part 14, a ventilation gap 143 is formed between the connecting part 11 and the outer surface of the cylindrical part 14, and a plurality of ventilation holes 110 are arranged on the connecting part 11 along the circumferential direction thereof, the ventilation holes 110 penetrate through the inner and outer surfaces of the connecting part 11 to communicate with the ventilation gap 143, so that, when the vehicle is braked, the ventilation holes 110 and the ventilation gap 143 form a channel, so that the air around the brake disc 20 corresponds to the air outside the connecting part 11, thereby facilitating the cooling of the brake disc 20; the end 142 and the end 141 of the cylindrical part 14 are provided with mounting grooves, the bearing 101 and the bearing 102 are mounted in the two mounting grooves, the connecting part 11 is arranged on the periphery of the cylindrical part 14, and a ventilation gap 143 is arranged between the two mounting grooves, so that heat transmitted to the cylindrical part 14 is reduced, the heat generated by the brake disc 20 has influence on the bearing 101, the bearing 102 and an oil seal mounted on the bearing 102, namely, the hub 10 is provided with a double-layer structure, and the heat generated by the brake disc 20 can be timely dissipated to the external environment through a channel between the double-layer structure, so that the heat is prevented from influencing parts in the cylindrical part 14 which is of an inner-layer structure.
Further, the present invention provides the ABS ring gear 17 on the end surface of the second end 112 of the connecting portion 11.
The axle assembly of the present invention includes the above-described axle end structure, and other structures of the axle assembly are the same as those of the prior art and will not be described in detail herein.
The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The wheel end structure is characterized by comprising a brake disc and a wheel hub;
the hub comprises a cylindrical part and an annular connecting part, the connecting part comprises a first end connected with the cylindrical part and a second end far away from the cylindrical part, the outer surface of the second end is provided with a first clamping part extending along the radial direction of the connecting part, a first limiting part and a second limiting part protruding out of the outer surface of the second end, and the first limiting part and the second limiting part are mutually staggered along the axial direction of the connecting part;
the brake disc is annular and comprises two opposite side surfaces and an inner edge surface positioned between the inner edges of the two side surfaces; the second end of the connecting part is connected in a hole defined by the inner edge surface in a penetrating manner, a second clamping part extending along the radial direction of the brake disc is arranged on the inner edge surface, the second clamping part and the first clamping part are matched to form a limiting mechanism used for limiting the brake disc to rotate around the axis of the connecting part, and the first limiting part and the second limiting part are respectively positioned on two sides of the brake disc;
an installation gap is formed between the brake disc and the first limiting part and/or the second limiting part, and the installation gap is filled with an elastic element.
2. The wheel end structure of claim 1 wherein the first engaging portion is a projection projecting outwardly from an outer surface of the second end, the second engaging portion is a recess provided in an inner peripheral surface of the brake rotor, and the projection is fitted in the recess.
3. The wheel end structure of claim 2, wherein the outer surface of the second end is provided with a plurality of bosses arranged along the circumferential direction of the connecting portion, a recessed portion is formed between two adjacent bosses, a plurality of grooves arranged along the circumferential direction of the brake disc are provided on the inner peripheral surface of the brake disc, a projection is formed between two adjacent grooves, the plurality of bosses are embedded in the plurality of grooves in a one-to-one correspondence, and the plurality of projections are embedded in the plurality of recessed portions in a one-to-one correspondence.
4. The wheel end structure of claim 2, wherein the first limiting portion is a limiting flange disposed on a side of the boss near the first end, and the second limiting portion is a snap spring fixed on a side of the boss far from the first end.
5. The wheel end structure of claim 4 wherein the resilient member is a spring plate disposed about the second end, the spring plate being undulating.
6. The wheel end structure of claim 4, wherein the boss is provided with a snap groove, and the snap spring is snapped in the snap groove.
7. The wheel end structure of claim 1, wherein the first end of the connecting portion is connected to an outer surface of a middle portion of the cylindrical portion with a ventilation gap formed therebetween, and the connecting portion is provided with ventilation holes arranged along a circumferential direction thereof and communicating with the ventilation gap.
8. The wheel end structure of claim 7, wherein the cylindrical portion is provided at both ends thereof with mounting grooves, respectively, in which the bearings are mounted.
9. The wheel end structure of claim 1, wherein the end face of the second end of the connecting portion is provided with an ABS ring gear.
10. An axle assembly, comprising the wheel end structure of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111047826.XA CN115771485A (en) | 2021-09-08 | 2021-09-08 | Wheel end structure and axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111047826.XA CN115771485A (en) | 2021-09-08 | 2021-09-08 | Wheel end structure and axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115771485A true CN115771485A (en) | 2023-03-10 |
Family
ID=85387897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111047826.XA Pending CN115771485A (en) | 2021-09-08 | 2021-09-08 | Wheel end structure and axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115771485A (en) |
-
2021
- 2021-09-08 CN CN202111047826.XA patent/CN115771485A/en active Pending
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