CN213831233U

CN213831233U - Cargo vehicle axle with conveniently maintained side wheels

Info

Publication number: CN213831233U
Application number: CN202021824675.5U
Authority: CN
Inventors: 周开胜; 吴均; 黄炜
Original assignee: Qingdao Aerospace Hongguang Vehicle Bridge Manufacturing Co ltd
Current assignee: Qingdao Aerospace Hongguang Vehicle Bridge Manufacturing Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-07-30
Anticipated expiration: 2030-08-27

Abstract

The utility model relates to a cargo vehicle axle that limit wheel is convenient for maintain, including wheel hub, axle housing, be equipped with wheel hub outer bearing and wheel hub inner bearing between wheel hub and the axle housing, wheel hub inner bearing include with axle housing complex wheel hub inner bearing circle, wheel hub outer bearing include with axle housing complex wheel hub outer bearing inner circle, wheel hub inner bearing inner circle sets up outer first extension, wheel hub outer bearing inner circle inward second extension, first extension contacts with the second extension. The inner ring of the inner bearing of the wheel hub and the inner ring of the outer bearing of the wheel hub are oppositely provided with extending parts, and the second extending parts abut against the first extending parts, so that the relative position of the outer bearing of the wheel hub and the inner bearing of the wheel hub is fixed. When the hub is overhauled and the hub outer bearing is reinstalled, the extending part of the hub outer bearing and the extending part of the hub outer bearing are only needed to be aligned again.

Description

Cargo vehicle axle with conveniently maintained side wheels

Technical Field

The utility model relates to a cargo vehicle makes technical field, specifically is axle.

Background

As shown in fig. 1, an automobile hub assembly in the prior art includes a hub 1, an axle housing 2, a half shaft 3, an outer bearing 8 and an inner bearing 10 are disposed between the axle housing 2 and the hub 1, and the inner bearing 10 and the outer bearing 8 both include an inner ring matched with the axle housing and an outer ring matched with the hub. Outer bearing 8 and interior bearing 10 generally all are tapered roller bearing, when assembly and maintenance, need adjustment axial internal clearance, debugging elasticity, if the internal clearance is too big, cross the pine, can influence the stability of structure, cause the noise too big, the internal clearance undersize, the tension can cause the loss of bearing, cause the bearing overheated even, the seizing shaft burns out. In the prior art, the tightness of the outer bearing and the tightness of the inner bearing need to be adjusted in distribution during assembly, the outer bearing and the inner bearing need to be adjusted again each time during maintenance, the outer bearing and the inner bearing are usually difficult to adjust to the optimal position, the requirement on maintenance personnel is high, and the maintenance cost is high.

Chinese utility model patent publication No. CN 211032049U discloses a deep groove ball bearing stop gear, and the bearing mounting structure of its wheel hub assembly also adopts above-mentioned scheme.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a cargo vehicle axle that limit wheel is convenient for maintain need not to debug the bearing play again when axle maintenance is maintained.

For solving the technical problem, the utility model discloses a cargo vehicle axle that limit wheel is convenient for maintain, including wheel hub, axle housing, be equipped with wheel hub outer bearing and wheel hub inner bearing between wheel hub and the axle housing, wheel hub inner bearing include with axle housing complex wheel hub inner bearing inner circle, wheel hub outer bearing include with axle housing complex wheel hub outer bearing inner circle, wheel hub inner bearing inner circle sets up outer first extension, wheel hub outer bearing inner circle inward second extension, first extension contacts with the second extension.

The inner ring of the inner bearing of the wheel hub and the inner ring of the outer bearing of the wheel hub are oppositely provided with extending parts, and the second extending parts abut against the first extending parts, so that the relative position of the outer bearing of the wheel hub and the inner bearing of the wheel hub is fixed. When the hub is overhauled and the hub outer bearing is reinstalled, the extending part of the hub outer bearing and the extending part of the hub outer bearing are only needed to be aligned again.

And the outer surface of the contact part of the first extension part and the second extension part is provided with an inner bearing sealing ring and an outer bearing sealing ring. First extension and second extension contact mutually department can leave the gap, sets up the mounting groove in gap department, sets up inside and outside bearing seal ring in the mounting groove, can prevent that lubricating oil from getting into between wheel hub inner bearing and the axle housing through the gap between first extension and the second extension, and then along the space between wheel hub inner bearing and the axle housing get into the part within the wheel hub inner bearing.

An oil collecting groove is formed in the inner surface of the contact part of the first extending part and the second extending part. A small amount of lubricating oil entering between the hub inner bearing and the axle housing through the gap between the first extending portion and the second extending portion can be collected in the oil collecting groove without further penetrating into the hub.

And the inner end of the inner bearing ring of the hub is provided with an inner oil seal seat of the hub. The oil seal seat can restrain the oil seal in the hub in the axial direction, so that the oil seal in the hub is sealed more tightly.

And an O-shaped ring is arranged on the inner ring of the bearing in the hub.

The inner bearing ring of the hub is provided with a conical surface, and an O-shaped ring is arranged in the conical surface.

And an outer hub oil seal and an inner hub oil seal are arranged between the hub and the axle housing.

The hub inner oil seal is arranged on the hub inner oil seal seat.

The utility model discloses still relate to a cargo vehicle axle, including above-mentioned cargo vehicle wheel limit structure.

The utility model discloses a wheel hub inner bearing inner race and wheel hub outer bearing inner race set up the extension in opposite directions, and the second extension supports first extension, therefore the relative position of wheel hub outer bearing and wheel hub inner bearing is fixed. When the hub is overhauled and the hub outer bearing is reinstalled, the extending part of the hub outer bearing and the extending part of the hub outer bearing are only needed to be aligned again. The tightness of the outer bearing and the inner bearing does not need to be adjusted in distribution during assembly, and the maintenance cost is saved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic view of a prior art truck wheel rim structure.

Fig. 2 is a schematic view of the wheel rim structure of the utility model.

FIG. 3 is a schematic view of the hub outer bearing and hub inner bearing configuration.

Fig. 4 is a schematic structural view of a truck wheel-side gear oil lubrication structure.

Fig. 5 is a schematic view of the structure of a prior art oil seal.

Fig. 6 is a schematic structural diagram of the bearing oil seal structure of the present invention.

Detailed Description

As shown in fig. 2 and 3, the utility model discloses a cargo-carrying automobile wheel limit structure, including wheel hub 1, axle housing 2, semi-axis 3, be equipped with wheel hub outer bearing 8 and wheel hub inner bearing 10 between wheel hub 1 and the axle housing 2, wheel hub outer bearing 8 include with axle housing 2 complex wheel hub outer bearing inner circle 81 and with wheel hub matched with wheel hub outer bearing outer lane 82, wheel hub inner bearing 10 include with axle housing 2 complex wheel hub inner bearing inner circle 101 and with wheel hub matched with wheel hub inner bearing outer lane 102, wheel hub inner bearing inner circle 101 sets up outer first extension 1011, wheel hub outer bearing inner circle 81 inside second extension 811, first extension 1011 contacts with second extension 811.

The hub inner bearing inner ring 81 and the hub outer bearing inner ring 101 are provided with extending portions facing each other, and the second extending portion 1011 abuts against the first extending portion 801, so that the relative positions of the hub outer bearing 8 and the hub inner bearing 10 are fixed. When hub outer bearing 8 is remounted for maintenance of hub 1, extension 811 of hub outer bearing 8 and extension 1011 of hub inner bearing need only be realigned.

The outer surface where the first extension 1011 and the second extension 811 meet is provided with an inner and outer bearing seal ring 12. First extension and second extension contact department can leave gap 13, sets up the mounting groove in gap 13 department, sets up inside and outside bearing seal ring 12 in the mounting groove, can prevent that lubricating oil from getting into between wheel hub inner bearing 10 and the axle housing 2 through gap 13 between first extension 1011 and the second extension 811, and then get into the part in wheel hub inner bearing 10 along the space 14 between wheel hub inner bearing 10 and the axle housing 2.

The oil sump 14 is provided on the inner surface where the first extension 1011 and the second extension 811 contact each other. A small amount of lubricating oil entering between the in-hub bearing 10 and the axle housing 2 through the gap 13 between the first extended portion 1011 and the second extended portion 811 can be collected in the oil sump 14 without further penetration into the interior of the hub.

As shown in fig. 2 and 6, the oil seal structure for the axle bearing of the truck comprises an inner hub bearing 10 and an inner hub oil seal 7, wherein the inner hub bearing 10 comprises an inner hub bearing inner ring 101 and an outer hub bearing inner ring, the inner hub bearing inner ring 101 is fixedly mounted on an axle housing, a rear extension part 102 is arranged at the inner end of the inner hub bearing inner ring 101 and serves as an oil seal seat, and the inner hub oil seal 7 is mounted on the oil seal seat. The oil seal seat can restrain the hub inner oil seal 7 in the axial direction, so that the sealing of the hub inner oil seal 7 is tighter. The rear extension part is arranged as an oil seal seat and is used as a part of a combined oil seal, so that an inner ring of the combined oil seal is omitted, and the installation is simpler and more convenient.

The trailing portion includes a body parallel to the axial direction, perpendicular to the axial disc 1022. The disc part 1022 perpendicular to the axial direction can abut against the inner oil seal 7 of the hub to prevent the inner oil seal 7 from moving in the radial direction, and can also be matched with the inner oil seal 7 of the hub to ensure better sealing effect and increase one way of blocking a labyrinth flow passage of oil leakage.

The in-wheel oil seal 7 comprises a sleeve 71 parallel to a cylindrical surface in the axial direction and a sleeve disc 72 perpendicular to the axial direction, a lubricating oil sealing structure 23 is arranged on the sleeve disc 72, and the sealing structure 23 comprises a sealing lip 24 in close contact fit with the body and a sealing lip 24 in close contact fit with a disc part 1022.

A flange 1023 is provided on the disk 1022 and a projection 17 is provided on the sleeve disk 72 corresponding to the flange 1023. A sealing lip 24 is provided on the sleeve disk 72 at a position corresponding to the flange 1023. The in-hub oil seal 7 further includes a second sleeve 73 and a second sleeve disk 74 mounted in the sleeve 71, the second sleeve disk 74 being provided with the lubricating oil seal structure 23.

The matching of the inner oil seal and the inner bearing can not only support the inner oil seal 7 of the wheel hub to prevent the inner oil seal from moving in the radial direction, but also can be matched with the inner oil seal 7 of the wheel hub to ensure that the sealing effect is better, so that a labyrinth flow passage for oil leakage is blocked. The labyrinth runner of current oil blanket and inner bearing only arranges along the axial, the utility model discloses a labyrinth runner not only has along axial arrangement, sets up flange 1023 and arch 17 immediately at the back of axial labyrinth runner moreover, has formed the radial labyrinth runner mutually vertically with axial labyrinth runner. Since the inner oil seal is provided with a semi-annular structure at the innermost end, that is, the inner bearing ring 101, the disk part 1022 and the flange 1023 of the hub form a semi-annular structure, oil leakage hardly breaks through such a structure and enters the interior of the hub.

The inner side of the rear extending part 102 is provided with a conical surface 16 corresponding to the oil seal seat, a circle of space is formed between the conical surface 16 and the axle housing 2, and an O-shaped ring is arranged in the space. The O-shaped ring can prevent lubricating oil leaked from the gap 13 and the oil collecting groove 14 from entering the inner part of the hub. And an outer hub oil seal 6 and an inner hub oil seal 7 are arranged between the hub and the axle housing, and the inner hub oil seal 7 is arranged on the inner hub oil seal seat. The multi-layer sealing structure can ensure that lubricating oil cannot leak, and the oil sealing structure can also enable the oil seal 7 in the hub to be installed on the oil seal seat.

The utility model discloses a cargo vehicle still includes cargo vehicle wheel side gear oil lubrication structure, includes wheel hub 1, axle housing 2 and semi-axis 3 like figure 4, and the gap between axle housing 2 and the semi-axis 3 forms semi-axis lubricating oil passageway 4, sets up the oil blanket in the wheel hub between axle housing and the wheel hub.

The utility model discloses a wheel hub has cancelled the oil blanket 5 between the outer tip of semi-axis 3 and the axle housing 2, has cancelled the outer oil blanket of wheel hub of axle housing 2 and wheel hub 1 simultaneously, and the gap between axle housing 2 and semi-axis 3 forms semi-axis lubricating oil passageway 4, and the front end of semi-axis 3 leaves oil circuit gap 41 with the axle housing front end, as semi-axis lubricating oil passageway 4's partly, can be lubricating oil from the gap between axle housing 2 and the semi-axis 3 get into the gap between axle housing 2 and the wheel hub 1.

Originally, only be used for lubricating oil in the gap between axle housing 2 and semi-axis 3, can pass through the gap between axle housing 2 and the semi-axis 3 to through the gap between the outer bearing 8 between axle housing 2 and the wheel hub 1, come lubrication chamber 9 between axle housing 2 and the wheel hub 1, lubricate outer bearing 8 and inner bearing 10, replaced original lubricating grease.

And a lubricating cavity 9 is arranged between the hub 1 and the axle housing 2. An oil outlet (not shown) is arranged on the hub at the position of the lubricating cavity 9. When lubricating oil needs to be replaced, the oil discharge port is opened, and old lubricating oil can be discharged.

After adopting such structure, the utility model discloses the moist mode of wheel limit bearing is gear oil lubrication, directly adopts the owner promptly to subtract the same gear oil lubrication of the inside, can realize non-maintaining throughout the life, also changes the gear oil on wheel limit when changing the owner and subtracting gear oil, can reduce the maintenance cost and the conveying efficiency in the use. After the wheel edge of the traditional truck is changed from traditional grease lubrication to gear lubrication, the semi-axle oil seal, the hub outer oil seal and the hub inner oil seal outer ring of the wheel edge of the traditional truck are eliminated, the cost is saved, and all functions of the traditional structure are realized.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and those skilled in the art may make modifications and changes to the equivalent embodiment by using the technical contents disclosed above. The technical matters of the present invention, including any simple modification, equivalent changes and modifications, do not depart from the technical matters of the present invention, and all fall within the protection scope of the present invention.

Claims

1. The utility model provides a cargo vehicle axle that limit wheel is convenient for maintain, includes wheel hub, axle housing, is equipped with wheel hub outer bearing and wheel hub inner bearing between wheel hub and the axle housing, wheel hub inner bearing include with axle housing complex wheel hub inner bearing inner race, wheel hub outer bearing include with axle housing complex wheel hub outer bearing inner race, its characterized in that: the hub inner bearing inner ring is provided with an outer first extension part, the hub outer bearing inner ring is provided with an inner second extension part, and the first extension part is in contact with the second extension part.

2. The truck axle with side wheels for facilitating maintenance as set forth in claim 1, wherein: the outer surface of the contact position of the first extension part and the second extension part is provided with an inner bearing sealing ring and an outer bearing sealing ring, and a wheel hub inner oil seal is arranged between the wheel hub and the axle housing.

3. The truck axle with side wheels for facilitating maintenance as set forth in claim 2, wherein: an oil collecting groove is formed in the inner surface of the contact part of the first extending part and the second extending part.

4. The truck axle with side wheels for facilitating maintenance as set forth in claim 1, wherein: and the inner end of the inner bearing ring of the hub is provided with an inner oil seal seat of the hub.

5. The truck axle with side wheels for facilitating maintenance as set forth in claim 1, wherein: and an O-shaped ring is arranged on the inner ring of the bearing in the hub.

6. The truck axle with side wheels for facilitating maintenance according to claim 5, wherein: the inner bearing ring of the hub is provided with a conical surface, and an O-shaped ring is arranged in the conical surface.

7. The truck axle with side wheels for facilitating maintenance as set forth in claim 4, wherein: the hub inner oil seal is arranged on the hub inner oil seal seat.