CN215041850U

CN215041850U - Ablation-proof maintenance-free high-strength wheel end device for automobile

Info

Publication number: CN215041850U
Application number: CN202121014776.0U
Authority: CN
Inventors: 陈可涛
Original assignee: Dayun Automobile Co Ltd
Current assignee: Dayun Automobile Co Ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-12-07
Anticipated expiration: 2031-05-13

Abstract

The utility model relates to a car ablation prevention non-maintaining high strength wheel end device relates to car axle product field. The method comprises the following steps: the device comprises a shaft tube, an O-shaped ring, a combined oil seal, a hub, a bearing, an elastic spacer bush, a sealing ring, a self-locking nut, an oil adding and discharging plug screw and a protective relief valve; the axle tube is used for supporting the axle tube at the wheel end of an axle, the wheel hub is used for bearing a rim and a tire, the bearings are two groups with the same structure, the axle tube extends into the wheel hub, and the two groups of bearings with the same structure are arranged between the axle tube and the wheel hub; in two sets of bearings that the structure is the same, one of them group of bearing is close to the tip position of central siphon, and the tip position of central siphon is kept away from to another group of bearing, and the elasticity spacer is located the wheel hub intracavity and installs between two sets of bearings that the structure is the same. By optimizing the wheel end structure, the lubrication condition is improved, the hub bearing is prevented from being ablated, the service cycle is prolonged, the use and maintenance cost is greatly reduced, the load intensity of the wheel end is improved, and the business dispute and the use cost of the automobile are reduced.

Description

Ablation-proof maintenance-free high-strength wheel end device for automobile

Technical Field

The utility model relates to an automobile axle product technical field especially relates to a car ablation prevention non-maintaining high strength wheel end device.

Background

With the rapid development of national economy in China, the demand of the automobile market is continuously and rapidly increased, the production and sales volume of automobiles exceeds 2200 thousands of cars in successive years, and the commercial cars exceed 500 thousands of cars. When the automobile output is increased, the use and maintenance cost of a user and the amount of after-sale service claims of the automobile remain high. According to statistics, regarding the average service index of the market quality after 12 months of hub bearing failure, the service cost of the axle manufacturing enterprises with the front rank in China is about 5000-20000 Yuan/vehicle, wherein the front axle bearing failure accounts for 2.69%, the middle and rear axle bearing failure accounts for 0.42%. The method is characterized in that the annual production and sales volume of commercial vehicles is calculated as an example, the ablation quality of the axle hub bearing is failed, the after-sales service cost is 1.05-26.9 million yuan, and other indirect losses and claims caused by the failure are avoided.

The current reasons for ablation failure of a bearing with a common wheel end structure comprise: the axle wheel end axle tube is a forged steel part, and is subjected to heat treatment and finish machining, so that the defects of uneven wall thickness and stress concentration exist; the hub is an iron casting, is subjected to heat treatment and finish machining, and has the defects of uneven wall thickness and stress concentration; the difference value of the mounting apertures of the inner and outer supporting load bearings is 5/10/15, the load distribution is uneven, and the mounting clearance of the bearings is difficult to guarantee through the adjustment of a locking device; the lubrication conditions are inconsistent, and the ablation failure rate is high; the oil seal material, structure and the inner and outer circle matching mounting surface are unreasonable, the damage rate is high, lubricating oil (grease) leaks, and the bearing lubrication fails to work, so that ablation is caused. In order to improve the problems, an anti-ablation maintenance-free high-strength wheel end device for an automobile needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a car prevents ablating non-maintaining high strength wheel end device.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model discloses a car ablation prevention non-maintaining high strength wheel end device, include: the device comprises a shaft tube, an O-shaped ring, a combined oil seal, a hub, a bearing, an elastic spacer bush, a sealing ring, a self-locking nut, an oil adding and discharging plug screw and a protective relief valve;

the axle tube is an axle wheel end supporting axle tube, the wheel hub is used for bearing a rim and a tire, the bearings are two groups with the same structure, the axle tube extends into the wheel hub, and the two groups of bearings with the same structure are arranged between the axle tube and the wheel hub;

in the two groups of bearings with the same structure, one group of bearings is close to the end part of the shaft tube, the other group of bearings is far away from the end part of the shaft tube, and the elastic spacer bush is positioned in the hub cavity and is arranged between the two groups of bearings with the same structure;

the O-shaped ring is sleeved on the shaft tube and is in contact with a group of bearings far away from the end position of the shaft tube, and the combined oil seal is installed between the hub and the group of bearings far away from the end position of the shaft tube in a matched manner;

the sealing ring is matched with the hub and a group of bearings close to the end position of the shaft tube, and the self-locking nut is arranged at the end surface of the shaft tube and is in contact with the end surface of the group of bearings close to the end position of the shaft tube;

the oil adding and discharging screw plug is arranged on the hub, and the protective relief valve is arranged on the oil adding and discharging screw plug.

Preferably, the O-shaped ring is designed to form an angle parting surface.

Preferably, the combined oil seal is of a multi-lip, labyrinth inner cavity and outer circular surface wavy structure.

Preferably, the hub is provided with an oil adding and discharging screw plug hole corresponding to the oil adding and discharging screw plug.

Preferably, the bearing is a tapered roller bearing.

Preferably, the elastic spacer is provided with an oil filter hole on the surface.

Preferably, the sealing ring is of a skeleton-free structure.

Preferably, the oil adding and discharging screw plug is arranged on the hub in a threaded fit mode.

In the technical scheme, the utility model provides a pair of car ablation prevention non-maintaining high strength wheel end device has following beneficial effect:

by optimizing the wheel end structure, the lubrication condition is improved, the hub bearing is prevented from being ablated, the service cycle is prolonged, the use and maintenance cost is greatly reduced, the load intensity of the wheel end is improved, and the business dispute and the use cost of the automobile are reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic structural view of an anti-ablation maintenance-free high-strength wheel end device for an automobile according to an embodiment of the present invention;

fig. 2 is a schematic view of an axle tube of an anti-ablation maintenance-free high-strength wheel-end device for an automobile according to an embodiment of the present invention;

fig. 3 is a schematic view of an O-ring of an anti-ablation maintenance-free high-strength wheel end device for an automobile according to an embodiment of the present invention;

fig. 4 is a schematic view of a combined oil seal of an anti-ablation maintenance-free high-strength wheel end device for an automobile according to an embodiment of the present invention;

fig. 5 is a schematic view of a wheel hub of an anti-ablation maintenance-free high-strength wheel end device for an automobile according to an embodiment of the present invention;

fig. 6 is a schematic view of a bearing of an anti-ablation maintenance-free high-strength wheel end device for an automobile according to an embodiment of the present invention;

fig. 7 is a schematic view of an elastic spacer of an anti-ablation maintenance-free high-strength wheel end device for an automobile according to an embodiment of the present invention;

fig. 8 is a schematic view of a sealing ring of an anti-ablation maintenance-free high-strength wheel end device for an automobile according to an embodiment of the present invention;

fig. 9 is a schematic view of a self-locking nut of an anti-ablation maintenance-free high-strength wheel end device for an automobile according to an embodiment of the present invention;

fig. 10 is a schematic view of an oil filling and draining plug screw of an anti-ablation maintenance-free high-strength wheel end device for an automobile according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a protection relief valve of an automobile ablation-prevention maintenance-free high-strength wheel end device provided by the embodiment of the present invention.

Description of reference numerals:

1. an axle tube; 2. an O-shaped ring; 3. combining oil seals; 4. a hub; 5. a bearing; 6. an elastic spacer sleeve; 7. a seal ring; 8. a self-locking nut; 9. adding an oil drain plug screw; 10. a protection pressure release valve; 11. oil drainage screw plug holes are added; 12. an oil filter hole.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

Referring to fig. 1-11, an ablation-proof maintenance-free high-strength wheel end device for a vehicle includes: the device comprises an axle tube 1, an O-shaped ring 2, a combined oil seal 3, a hub 4, a bearing 5, an elastic spacer 6, a sealing ring 7, a self-locking nut 8, an oil adding and discharging screw plug 9 and a protective pressure release valve 10;

the axle tube 1 is an axle wheel end supporting axle tube, the wheel hub 4 is used for bearing a wheel rim and a tire, the bearings 5 are two groups with the same structure, the axle tube 1 extends into the wheel hub 4, and the two groups of bearings 5 with the same structure are arranged between the axle tube 1 and the wheel hub 4;

in the two groups of bearings 5 with the same structure, one group of bearings 5 is close to the end part of the shaft tube 1, the other group of bearings 5 is far away from the end part of the shaft tube 1, and the elastic spacer 6 is positioned in the cavity of the hub 4 and is arranged between the two groups of bearings 5 with the same structure;

the O-shaped ring 2 is sleeved on the shaft tube 1 and is contacted with a group of bearings 5 far away from the end part of the shaft tube 1, and the combined oil seal 3 is installed between the hub 4 and the group of bearings 5 far away from the end part of the shaft tube 1 in a matching way;

the sealing ring 7 is matched with the hub 4 and a group of bearings 5 close to the end position of the shaft tube 1, and the self-locking nut 8 is arranged at the end surface of the shaft tube 1 and is contacted with the end surface of the group of bearings 5 close to the end position of the shaft tube 1;

add the oil drain plug screw 9 and set up on wheel hub 4, protection relief valve 10 sets up on adding oil drain plug screw 9.

The device improves the lubricating condition by optimizing the structure of the wheel end, prevents the hub bearing from being ablated, prolongs the service cycle, greatly reduces the use and maintenance cost, improves the load intensity of the wheel end, and reduces the business dispute and the use cost of the automobile. The device is suitable for the drum type, disc type and wedge type wheel ends of automobiles (including commercial vehicles and passenger vehicles) for bearing or steering, steering driving, following, floating and the like.

Specifically, the axle tube 1 is made of alloy structural steel, has good comprehensive performance, low-temperature impact toughness and low notch sensitivity after heat treatment, is forged by a die through CAE analysis, has good formability, compact tissue structure and uniform wall thickness, is finish-machined after friction welding with an axle housing body, eliminates hidden danger of stress concentration, is suitable for manufacturing medium-speed and medium-load mechanical parts, and has high strength.

The O-shaped ring 2 is designed to be a 45-degree parting surface. Specifically, O type circle 2 is rubber O type circle, and resistant time wear resistance is good, adopts 45 die joints design, avoids the die joint to combine with the installation face, improves sealed effect.

The combined oil seal 3 is of a multi-lip, labyrinth inner cavity and outer circular surface wavy structure. Specifically, the combined oil seal 3 is made of fluororubber, has excellent performance, good temperature resistance and chemical corrosion resistance, has a working temperature of-40 to +250 ℃, has a multi-lip and labyrinth inner cavity structure, and is wavy on the outer circle mounting surface, so that scrap iron, silt, dust and other harmful substances can be effectively prevented from entering, and the sealing performance and the service life are greatly improved.

The hub 4 is provided with an oil adding and discharging screw plug hole 11 corresponding to the oil adding and discharging screw plug 9. Specifically, the high-strength nodular cast iron is selected as the material of the hub 4, CAE analysis and mold forming are adopted, the structure is compact, the wall thickness is uniform, the hidden danger of stress concentration is eliminated, and the high-strength nodular cast iron is suitable for parts which are complex in stress and have high requirements on strength, toughness and wear resistance, and has good mechanical performance; meanwhile, an oil adding and discharging screw hole 11 is processed, the working condition of the bearing is judged by observing the color, smell and loss of lubricating oil (grease), whether oil (grease) is added/replaced or maintenance is determined, and high loss of bearing ablation and axle scrapping is avoided at a slight cost.

The bearing 5 is a tapered roller bearing. Specifically, the bearing 5 is a special tapered roller bearing with the same specification and model, mainly bears radial and axial combined loads mainly, adopts a larger conical angle, has strong load bearing capacity, is designed by double bearings with the same specification, has a simple structure, reduces the comprehensive errors of manufacturing and assembling various parts, has good stability, is consistent in lubricating conditions and environment, and effectively prolongs the service life.

The surface of the elastic spacer 6 is provided with oil filtering holes 12. Specifically, the elastic spacer 6 is made of spring steel by CAE analysis, has higher strength after heat treatment, has certain flexibility and plasticity, is provided with the oil filtering hole 12 on the surface to keep good lubrication, compensates the working clearance of the bearing 5 by utilizing the elastic deformation of the spacer, and prolongs the service life of the wheel end.

The sealing ring 7 is of a skeleton-free structure. Specifically, the sealing ring 7 is of a skeleton-free structure, and the working pressure is as follows: 0-300 MPa, working speed: less than or equal to 15 m/s; working temperature: -55 to +250 ℃, suitable media: the sealing surface has an automatic elastic compensation function after being worn, and the service life is effectively prolonged.

The oil adding and discharging screw plug 9 is arranged on the hub 4 through thread matching. Concretely, add oil drain plug 9 and be modular structure, screw fastening + O type circle is sealed + magnet protection, can adsorb wheel end inner chamber wearing and tearing iron fillings through magnet, reduces to bearing and sealing member damage increase of service life.

Wherein, protection relief valve 10 prevents that silt and stone are strikeed, has certain sealed effect simultaneously, when 4 inner chamber pressures of wheel hub are too high, automatic pressure release.

The self-locking nut 8 is in an eccentric bayonet structure, has a double-friction self-locking function, can effectively prevent looseness and shock, can keep the working clearance of the bearing for a long time, reduces abrasion, and prolongs the service life of the wheel end.

Lubricating oil is filled in the inner cavity of the hub 4, and the lubricating oil is vehicle heavy-load gear oil, so that the high-speed impact resistance and the torsion resistance are good.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The utility model provides a car prevents ablating non-maintaining high strength wheel end device which characterized in that includes: the device comprises a shaft tube (1), an O-shaped ring (2), a combined oil seal (3), a hub (4), a bearing (5), an elastic spacer bush (6), a sealing ring (7), a self-locking nut (8), an oil adding and discharging screw plug (9) and a protective pressure release valve (10);

the axle tube (1) is an axle wheel end supporting axle tube, the wheel hub (4) is used for bearing a wheel rim and a tire, the bearings (5) are two groups with the same structure, the axle tube (1) extends into the wheel hub (4), and the two groups of bearings (5) with the same structure are arranged between the axle tube (1) and the wheel hub (4);

in the two groups of bearings (5) with the same structure, one group of bearings (5) is close to the end part of the shaft tube (1), the other group of bearings (5) is far away from the end part of the shaft tube (1), and the elastic spacer bush (6) is positioned in the cavity of the hub (4) and is arranged between the two groups of bearings (5) with the same structure;

the O-shaped ring (2) is sleeved on the shaft tube (1) and is in contact with a group of bearings (5) far away from the end position of the shaft tube (1), and the combined oil seal (3) is installed between the hub (4) and the group of bearings (5) far away from the end position of the shaft tube (1) in a matching manner;

the sealing ring (7) is matched with the hub (4) and a group of bearings (5) close to the end position of the shaft tube (1) for installation, and the self-locking nut (8) is arranged at the end surface of the shaft tube (1) and is contacted with the end surface of the group of bearings (5) close to the end position of the shaft tube (1);

add oil drain plug (9) and set up on wheel hub (4), protection relief valve (10) set up add on oil drain plug (9).

2. The ablation-prevention maintenance-free high-strength wheel end device for the automobile as claimed in claim 1, wherein the O-ring (2) is designed with a 45-degree parting surface.

3. The automobile ablation-prevention maintenance-free high-strength wheel end device as claimed in claim 1, wherein the combined oil seal (3) is of a multi-lip, labyrinth-type inner cavity and outer circular surface wavy structure.

4. The automobile ablation-prevention maintenance-free high-strength wheel end device according to claim 1, wherein an oil adding and discharging screw plug hole (11) corresponding to the oil adding and discharging screw plug (9) is formed in the wheel hub (4).

5. The ablation-prevention maintenance-free high-strength wheel end device of the automobile according to claim 1, wherein the bearing (5) is a tapered roller bearing.

6. The ablation-prevention maintenance-free high-strength wheel end device for the automobile as claimed in claim 1, wherein the elastic spacer bush (6) is provided with an oil filtering hole (12) on the surface.

7. The ablation-prevention maintenance-free high-strength wheel end device for the automobile according to claim 1, wherein the sealing ring (7) is of a skeleton-free structure.

8. The automobile ablation-prevention maintenance-free high-strength wheel end device according to claim 1, wherein the oil filling and discharging screw plug (9) is arranged on the wheel hub (4) through threaded fit.