CN113954576A

CN113954576A - Wheel end assembly, front axle suspension and heavy vehicle

Info

Publication number: CN113954576A
Application number: CN202111304817.4A
Authority: CN
Inventors: 王泽康; 颜文星; 李晓华; 赵海杰; 张伟; 方雷
Original assignee: Aerospace Heavy Industry Equipment Co ltd
Current assignee: Aerospace Heavy Industry Equipment Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-01-21

Abstract

The embodiment of the invention discloses a wheel end assembly, which comprises: a hub; the brake disc comprises a body, and a connecting part and a braking part which are arranged on the body; the body is sleeved outside the hub, the body is connected with the hub through the connecting part, a gap is formed between the body and the hub, and the braking part is far away from the connecting part; the embodiment of the invention discloses a front axle suspension, which comprises a wheel end assembly and a steering arm, wherein the steering arm is connected with a mandrel of the wheel end assembly; the embodiment of the invention discloses a heavy vehicle, which comprises a front axle suspension; when the brake disc is used, the brake disc and the hub are arranged at intervals, so that heat generated on the brake disc cannot be directly transmitted to the hub to influence the use of the hub, and the brake disc is cooled through a gap generated by the interval arrangement, so that the situation that the heat led into the hub is too high to influence the matching use of the hub and other components is prevented.

Description

Wheel end assembly, front axle suspension and heavy vehicle

Technical Field

The application belongs to the technical field of vehicle accessories, especially relates to a wheel end subassembly, front axle suspension and heavy vehicle.

Background

The mining wide-body vehicle is mainly used for the transportation work of earth stripping, coal transportation and slag discharge of an open coal mine, and due to the fact that the loading capacity is large when the mining wide-body vehicle is used, faults such as oil leakage of an oil seal, plate spring breakage, braking heating and the like often occur after the steering axle on the mining wide-body vehicle is used for a long time, the attendance rate of the vehicle is greatly reduced, and the use requirements cannot be met.

At present, in the prior art, a front axle of a vehicle is transformed according to a design concept of a MacPherson front axle of a large electric wheel mine for strip mine, and a MacPherson front axle suspension suitable for a wide-body mine vehicle is researched and developed through structural changes such as reduction of sizes of all parts and adjustment of assembly combination. However, this kind of front axle suspension is in the use, bear the weight of the front axle big, when the faster vehicle of speed brakies, because brake disc and wheel hub laminating, the heat that produces on the brake disc can directly transmit to wheel hub on, make wheel hub's temperature rise, and then to the inside lubricating grease of wheel hub, structures such as bearing and dabber heat, it is not good to lead to the lubricated effect between parts such as wheel hub and dabber, bearing, make the vehicle in mining area operation process, often appear because the bearing breaks, the cracked problem of dabber, lead to vehicle maintenance cycle longer, economic loss is great.

Disclosure of Invention

The embodiment of the invention aims to solve the technical problem that the lubricating effect is poor when the wheel hub is matched with other parts in the wheel hub due to overhigh temperature of the wheel hub when a vehicle is braked at least to a certain extent. To this end, the present application provides a wheel end assembly, a front axle suspension and a heavy-duty vehicle.

An embodiment of the present invention provides a wheel end assembly, including:

a hub;

the brake disc comprises a body, and a connecting part and a braking part which are arranged on the body;

the body is sleeved outside the hub, the body is connected with the hub through the connecting portion, a gap is formed between the body and the hub, and the braking portion is far away from the connecting portion.

In the embodiment of the invention, the body is provided with the through hole, the body is sleeved on the hub through the through hole, and the gap is communicated with the outside.

In an embodiment of the present invention, the connecting portion is disposed at one end of the through hole, and the stopper portion is disposed at the other end of the through hole.

In the embodiment of the invention, an oil lubrication cavity for storing lubricating oil is arranged in the hub;

the hub comprises a first port and a second port, and the first port and the second port are oppositely arranged at two ends of the oil lubrication cavity;

the connection part of the connecting part and the wheel hub is arranged on the wheel hub shell at the oil lubrication cavity.

In an embodiment of the present invention, the wheel end assembly further comprises:

the mandrel penetrates through the oil lubrication cavity through the first port and the second port and is rotatably connected with the hub through bearing assemblies arranged in the first port and the second port;

the first sealing element is respectively in dynamic sealing connection with the mandrel and the first port;

a second seal sealing the second port.

In an embodiment of the invention, the stopper and the first port are disposed near an inner side of the hub;

the second port is arranged close to the outer side of the hub, and a heat dissipation port is formed in the shell on the outer side of the hub.

In an embodiment of the present invention, the oil lubrication chamber gradually increases in volume in a direction from the brake portion to the connecting portion.

In an embodiment of the invention, a flange extends outwards from the shell of the hub, and the connecting part is connected with the hub by being mounted on the flange.

The front axle suspension provided by the embodiment of the invention comprises the wheel end assembly and the steering arm, wherein the steering arm is connected with the spindle of the wheel end assembly.

The embodiment of the invention provides a heavy vehicle which comprises the front axle suspension.

An embodiment of the present invention provides a wheel end assembly, including: a hub; the brake disc comprises a body, and a connecting part and a braking part which are arranged on the body; the body is sleeved outside the hub, the body is connected with the hub through the connecting part, a gap is formed between the body and the hub, and the braking part is far away from the connecting part; the embodiment of the invention provides a front axle suspension, which comprises a wheel end assembly and a steering arm, wherein the steering arm is connected with a mandrel of the wheel end assembly; the embodiment of the invention provides a heavy vehicle, which comprises a front axle suspension; when the brake disc is used, the brake disc and the hub are arranged at intervals, so that heat generated on the brake disc cannot be directly transmitted to the hub to influence the use of the hub, and the brake disc is cooled through a gap generated by the interval arrangement, so that the situation that the heat led into the hub is too high to influence the matching use of the hub and other components is prevented.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a wheel end assembly according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a wheel end assembly according to an embodiment of the present invention.

Reference numerals:

1. a hub; 11. an oil lubrication chamber; 12. a first port; 13. a second port; 2. a brake disc; 21. a body; 22. a connecting portion; 23. a brake section; 210. a through hole; 3. a gap; 4. a mandrel; 41. a bearing assembly; 5. a first seal member; 6. a second seal member; 7. a flange; 8. and a brake.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The application is described below with reference to specific embodiments in conjunction with the following drawings:

example one

An embodiment of the present invention provides a wheel end assembly, as shown in fig. 1 and 2, including: a hub 1; a brake disc 2 including a body 21, and a connecting portion 22 and a braking portion 23 provided on the body 21; the body 21 is sleeved outside the hub 1, the body 21 is connected with the hub 1 through the connecting portion 22, a gap 3 is arranged between the body 21 and the hub 1, and the braking portion 23 is far away from the connecting portion 22.

Here, the hub 1 is a core rotating part in which the tire inner profile steels are connected by a pillar, i.e., a metal member supporting the center of the tire mounted on a spindle 4. The brake disc 2 is mounted on the hub 1 for cooperation with a brake 8 for braking rotation of the hub 1.

When the brake disc 2 is in braking fit with the brake 8, the friction between the brake disc 2 and the brake 8 is increased, so that a large amount of heat is generated, the heat is transmitted to the hub 1 through the brake disc 2, if the heat dissipation of the hub 1 is poor, the heat may be gathered inside the hub 1, and thus the temperature of a cavity in the hub 1 is increased, so that lubricating grease in the cavity is heated, the lubricating effect of the lubricating grease in the cavity is poor, the rotation between the hub 1 and the mandrel 4 and between the hub 1 and the bearing is affected, and the problems of bearing fracture, mandrel 4 fracture and the like are further caused.

In order to ensure the use effect between the hub 1 and the spindle 4 and between the hub 1 and the bearing, the lubricating effect between the hub 1 and the spindle 4 and between the hub 1 and the bearing can be ensured by reducing the heat introduced from the brake disc 2 to the hub 1.

Specifically, the body 21 of the brake disc 2 is sleeved on the hub 1, and the body 21 is disposed at an interval with the hub 1 through the connecting portion 22 (that is, the body 21 is not connected with the hub 1), so that heat generated on the brake disc 2 cannot be directly transferred to the hub 1 through the body 21, and meanwhile, the brake disc 2 can also be cooled through the gap 3 generated by the interval. In particular, the size of the gap 3 can be adjusted according to the use needs. Meanwhile, the gap 3 may be communicated with the outside in order to improve the heat dissipation effect.

When installed, the body 21 is connected to the hub 1 through the connecting portion 22, and is connected to the brake 8 through the braking portion 23. In order to avoid heat transfer to the hub 1, the braking portion 23 is arranged remote from the connecting portion 22. In this way, the heat generated from the braking portion 23 needs to pass through the body 21 before being transferred to the hub 1 through the connecting portion 22, and the heat can be exchanged with the outside through the outer surface of the body 21 when passing through the body 21, so that the heat transferred to the hub 1 is reduced.

In use, the farther the distance between the braking portion 23 and the connecting portion 22 is, the better the heat dissipation effect on the body 21 is. The distance between the braking portion 23 and the connecting portion 22 can be adjusted by those skilled in the art according to the use requirement.

Specifically, as shown in fig. 2, a through hole 210 is formed in the body 21, the body 21 is sleeved on the hub 1 through the through hole 210, and a gap 3 for heat insulation and heat dissipation is formed between an inner hole wall of the through hole 210 and the surface of the hub 1. The connecting portion 22 is disposed at one end of the through hole 210 and connected to the surface of the hub 1, and the braking portion 23 is disposed at the other end of the through hole 210 and disposed away from the connecting portion 22 and the surface of the hub 1.

Thus, when the wheel end assembly in the embodiment of the present invention is used, heat generated by the braking portion 23 during braking needs to be transferred to the wheel hub 1 through the body 21 and the connecting portion 22, so that the wheel end assembly is away from the structural arrangement of the bearing, the spindle 4, the sealing element and the like inside the wheel hub 1, excessive wear and fracture of the bearing is avoided, the spindle 4 is prevented from being broken due to overheating, and sealing failure of the sealing element due to a heat conduction effect is also avoided.

Further, in the present embodiment, an oil lubrication chamber 11 for storing lubricating oil is provided inside the hub 1.

Here, in the prior art, the cavity inside the hub 1 is generally selected from solid grease, and the grease has the problems of difficult impurity removal and poor heat dissipation when in use. Specifically, the spindle 4 may generate a large amount of debris during prolonged use that may become entrained in the grease and may interfere with the use of the spindle 4 and bearings as the replacement spindle 4 rotates. In addition, the cavity provided with the lubricating grease has poor heat dissipation at temperature, and the mandrel 4 and the bearing are influenced by overhigh temperature, so that the mandrel 4 and the bearing are heated and deformed, and more chips are generated.

Therefore, a cavity body for placing lubricating grease inside the wheel hub 1 in the prior art is changed into an oil lubrication cavity 11 for placing lubricating oil, so that when impurities exist in the oil lubrication cavity 11, the flowing lubricating oil is easier to clean up the impurities such as chips, and meanwhile, due to the fact that the heat dissipation performance of the lubricating oil is better, the phenomenon that heat is accumulated in the oil lubrication cavity 11 to influence the use of internal components of the wheel hub 1 can be avoided.

Preferably, the larger the volume of the oil lubrication chamber 11, the more the lubricating oil, the better the heat dissipation effect of the whole wheel end assembly. In practice, the lubricating oil in the oil lubrication chamber 11 includes, but is not limited to, gear oil.

Further, in the present embodiment, the hub 1 includes a first port 12 and a second port 13, and the first port 12 and the second port 13 are oppositely disposed at both ends of the oil lubrication chamber 11; the connection part 22 and the hub 1 are arranged on the hub 1 shell at the oil lubrication cavity 11.

The wheel end assembly further includes: the mandrel 4 is arranged in the oil lubrication cavity 11 through the first port 12 and the second port 13 and is in rotating connection with the hub 1 through bearing assemblies 41 arranged in the first port 12 and the second port 13; the first sealing element 5 is respectively connected with the mandrel 4 and the first port 12 in a dynamic sealing manner; a second seal 6, said second seal 6 sealing said second port 13.

The brake 23 and the first port 12 are arranged close to the inner side of the hub 1; the second port 13 is disposed near the outer side of the hub 1, and a heat dissipation opening is formed in an outer shell of the hub 1.

The oil lubrication chamber 11 has a gradually increasing volume in the direction from the stopper portion 23 to the connecting portion 22.

Here, the first port 12 and the second port 13 are both communicated with the oil lubrication cavity 11, and when in use, the lubricating oil in the oil lubrication cavity 11 can enter the first port 12 and the second port 13, so as to lubricate the bearing assemblies 41 in the first port 12 and the second port 13, thereby ensuring the use effect of the bearing assemblies 41. Simultaneously the first port 12, the second port 13 and the oil lubrication chamber 11 that communicate with each other have also increased lubricating oil with wheel hub 1's area of contact, have improved the radiating effect in oil lubrication chamber 11, and then make the operation that each component can be stable in the wheel hub 1.

The spindle 4 is rotatably connected to the hub 1 through the bearing assemblies 41 in the first port 12 and the second port 13, and specifically, the end of the spindle 4 is connected to the bearing assembly 41 in the second port 13 through the bearing assembly 41 in the first port 12 and the oil lubrication chamber 11 in sequence.

Because the lubricating oil is arranged in the oil lubricating cavity 11 in the embodiment of the invention, in order to ensure stable operation of the mandrel 4 and the hub 1 and avoid the problem of oil leakage when the mandrel 4, the first port 12, the second port 13 and the oil lubricating cavity 11 are used in a matching manner, the cavity inside the hub 1 needs to be sealed.

Specifically, the first sealing element 5 may be a dynamic sealing element, which is connected between the connection of the spindle 4 and the first port 12 in a sealing manner, and when the spindle 4 rotates relative to the first port 12, the connection of the spindle 4 and the first port 12 can still maintain a good sealing effect. The second sealing member 6 may be a static sealing member, and when in use, the second port 13 is sealed to avoid communication with the outside, thereby preventing oil leakage. More specifically, the first seal 5 may be a floating oil seal, and the second seal 6 may be a cover sealed at the second port 13.

Here, since the body 21 of the brake disk 2 is spaced apart from the hub 1 in the embodiment of the present invention, the heat transferred from the brake disk 2 cannot directly act on the first seal member 5 and the second seal member 6, thereby avoiding the problem of seal failure and improving reliability.

Preferably, the embodiment of the present invention also provides the connection of the brake disc 2 and the hub 1 on the hub 1 housing at the oil lubrication chamber 11 remote from the first port 12 and the second port 13. This avoids the heat transferred to the disc 2 from directly acting on the bearing assembly 41, the first seal 5 and the second seal 6, ensuring the normal use of the bearing assembly 41 and the tightness of the entire cavity. Meanwhile, due to the good heat dissipation performance of the lubricating oil in the oil lubricating cavity 11, heat is transferred and exchanged with the outside in the transferring process, so that the heat is further prevented from being excessively concentrated on the components such as the mandrel 4, the bearing assembly 41, the first sealing element 5 and the second sealing element 6, and the use of the whole wheel end assembly is protected.

In order to improve wheel hub 1 with the rationality that 2 installation time of brake discs were used to the space guarantees the heat dispersion of whole wheel end subassembly, so will oil lubrication chamber 11 department 1 casing of wheel hub outwards protruding sets up, and is close to 11 volumes in the oil lubrication chamber in the 1 outside of wheel hub are greater than and are close to 1 inboard oil lubrication chamber 11 of wheel hub, still set up on 1's the outside casing of wheel hub the thermovent, set up on 1 casing of wheel hub 2 is close to 1 inboard setting of wheel hub.

Here, the inner side of the wheel hub 1 is a side connected with a frame body, and the outer side of the wheel hub 1 is a side connected with a tire, when in use, the outward bulge of the shell on the wheel hub 1 at the oil lubrication cavity 11 can further improve the utilization rate of space under the condition of ensuring the volume of the oil lubrication cavity 11, so that the brake disc 2 body 21 sleeved on the wheel hub 1 has a certain length (i.e. the distance between the braking portion 23 and the connecting portion 22) to improve the heat dissipation effect, and thus, the utilization rate of space in the wheel end assembly is further improved. In addition, the heat dissipation port is close to the oil lubrication cavity 11 with a larger volume, so that the heat of the lubricating oil is easier to be dissipated, and therefore, the embodiment of the invention can ensure that a larger space is not occupied through reasonable layout, and the influence of the brake disc 2 on the oil lubrication cavity 11 is further reduced.

Example two

A front axle suspension according to an embodiment of the present invention, as shown in fig. 1 and 2, includes a wheel end assembly and a steering arm as described in the above embodiment of the present invention, and the steering arm is connected to a spindle 4 of the wheel end assembly.

Here, the heavy vehicle is provided with a front axle suspension on which a wheel end assembly and a steering arm are provided, wherein, as shown in fig. 1 and 2, including a hub 1, a spindle 4, a brake disc 2 and a brake 8, an oil lubrication chamber 11 containing gear oil and a first port 12 and a second port 13 containing a bearing assembly 41 are provided inside the hub 1, wherein the first port 12 is provided on the left side of the oil lubrication chamber 11 and communicates with the outside, and the second port 13 is provided on the right side of the oil lubrication chamber 11 and communicates with the outside.

The right side surface of the hub 1 is also provided with a tire mounting bolt and a heat dissipation port, and the heat dissipation port is arranged between the second port 13 and the tire mounting bolt and used for dissipating heat; the tire mounting bolt is used for mounting and connecting the wheel hub 1 and a tire. And a flange 7 is arranged on the hub 1 in an extending manner at the position of the oil lubricating cavity 11.

One end of the spindle 4 is disposed in the second port 13 through the first port 12 and the oil lubrication chamber 11 in sequence, and is rotatably connected to the hub 1 through the fixed connection of the bearing assembly 41. The other end of the mandrel 4 is arranged outside the hub 1 and is provided with a knuckle arm mounting position. The oil lubrication chamber 11 is sealed by the first seal 5 provided at the first port 12 and the second seal 6 provided at the second port 13, thereby preventing the gear oil from leaking. Specifically, a mandrel 4 shoulder is provided on the mandrel 4 for rotational connection with the first port 12, and a first seal 5 is provided between the mandrel 4 shoulder and the first port 12 for sealing, so that sealing is maintained when the mandrel 4 rotates relative to the first port 12. The second seal 6 closes the second port 13 from the outside.

The brake disc 2 is sleeved on the hub 1 by being mounted on the flange 7, and is arranged at a distance from the hub 1. The connecting portion 22 of the brake disc 2 is connected to the flange 7, and the braking portion 23 is provided on the left side of the hub 1. The braking portion 23 is disposed away from the hub 1 with respect to the main body of the brake disc 2. The brake disc 2 and the outward extending flange 7 are installed to be far away from the parts of the first sealing element 5 and the second sealing element 6 on the hub 1, and the gap 3 is reserved between the brake disc 2 and the hub 1 through separation, so that sealing failure of the first sealing element 5 and the second sealing element 6 due to heat conduction is prevented, and reliability is improved.

The brake 8 is mounted on the mandrel 4, and the acting end of the brake 8 is operatively connected with the brake part 23.

Like this, in the wheel rotation process, 4 fixed mounting of dabber on the suspension hydro-cylinder, 4 do not rotate of dabber, wheel hub 1 rotates, drives like this gear oil in the lubricated chamber of oil 11 is constantly right bearing in the bearing subassembly 41 with dabber 4 stirs the oil lubrication, makes like this bearing in the bearing subassembly 41 with dabber 4 fully contacts with fluid, further promotes the gear oil radiating effect of vehicle under the heavy load condition, and lubricated effect is better.

When the wheel braking in-process, the root of dabber 4 is provided with 8 installing supports of stopper, stopper 8 fixed mounting is on this support, two friction discs on the stopper 8 are arranged in the both sides of the braking disk body (promptly) on 2 brake discs of brake disc braking portion 23, through the tight braking disk body speed reduction of clamp of friction disc, brake disc 2 with wheel hub 1 is connected, 1 end connection of wheel hub wheel works as 2 rotational speed reduction back of brake disc, the wheel tire through the connection reduces with it the rotational speed.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise" indicate orientations or positional relationships based on the orientation or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A wheel end assembly, comprising:

a hub (1);

a brake disc (2) comprising a body (21), and a connecting portion (22) and a braking portion (23) provided on the body (21);

the wheel hub is characterized in that the body (21) is sleeved outside the wheel hub (1), the body (21) is connected with the wheel hub (1) through the connecting portion (22), a gap (3) is formed between the body (21) and the wheel hub (1), and the braking portion (23) is far away from the connecting portion (22).

2. The wheel end assembly according to claim 1, wherein the body (21) is provided with a through hole (210), the body (21) is sleeved on the wheel hub (1) through the through hole (210), and the gap (3) is communicated with the outside.

3. The wheel end assembly of claim 1, wherein the connecting portion (22) is disposed at one end of the through bore (210) and the braking portion (23) is disposed at the other end of the through bore (210).

4. The wheel end assembly according to claim 1, characterized in that an oil lubrication chamber (11) for storing lubricating oil is provided inside the wheel hub (1);

the hub (1) comprises a first port (12) and a second port (13), the first port (12) and the second port (13) being oppositely arranged at two ends of the oil lubrication chamber (11);

the connecting part (22) and the hub (1) are arranged on the hub (1) shell at the oil lubricating cavity (11).

5. The wheel end assembly of claim 4 further comprising:

the mandrel (4) is arranged in the oil lubrication cavity (11) through the first port (12) and the second port (13) in a penetrating mode, and is in rotating connection with the wheel hub (1) through bearing assemblies (41) arranged in the first port (12) and the second port (13);

the first sealing element (5) is respectively in dynamic sealing connection with the mandrel (4) and the first port (12);

a second seal (6), the second seal (6) sealing the second port (13).

6. The wheel end assembly according to claim 4, wherein the brake portion (23) and the first port (12) are provided close to an inner side of the wheel hub (1);

the second port (13) is arranged close to the outer side of the hub (1), and a heat dissipation port is formed in the outer shell of the hub (1).

7. The wheel end assembly according to claim 4, characterized in that the oil lubrication chamber (11) is of increasing volume in the direction of the braking portion (23) to the connecting portion (22).

8. Wheel end assembly according to claim 4, characterized in that the housing of the wheel hub (1) extends outwardly with a flange (7), the connecting portion (22) being connected to the wheel hub (1) by being mounted on the flange (7).

9. Front axle suspension, comprising a wheel end assembly according to any of claims 1-8 and a steering arm, which is connected to the spindle (4) of the wheel end assembly.

10. A heavy vehicle comprising a front axle suspension according to claim 9.