CN217944802U - Transmission and sealing structure of steering drive axle - Google Patents
Transmission and sealing structure of steering drive axle Download PDFInfo
- Publication number
- CN217944802U CN217944802U CN202222053632.7U CN202222053632U CN217944802U CN 217944802 U CN217944802 U CN 217944802U CN 202222053632 U CN202222053632 U CN 202222053632U CN 217944802 U CN217944802 U CN 217944802U
- Authority
- CN
- China
- Prior art keywords
- shaft
- fork
- sun gear
- shell
- universal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
The utility model belongs to the technical field of steering drive device, concretely relates to steering drive axle's transmission and seal structure, differential mechanism semi-axis gear in the main reduction box casing connects the semi-axis, semi-axis shell body coupling knuckle casing, hub reduction gear and wheel hub are connected to the knuckle casing, run through in semi-axis casing and the knuckle casing and be equipped with universal drive shaft, the long fork axle of cardan shaft is connected with the semi-axis, the long fork axle of cardan shaft and the short fork of cardan shaft are connected with the double-unit fork, the sun gear axle is installed in the planet carrier rotation of hub reduction gear, the sun gear axle passes through inside and outside splined connection with the short fork of cardan shaft, be equipped with O type circle between bearing frame and the semi-axis casing, between the long fork axle of cardan shaft and the bearing frame, be equipped with between wheel hub and the knuckle casing and prevent muddy water oil seal, be equipped with the oil blanket between sun gear axle and the knuckle casing. The utility model discloses improve the service condition of oil blanket, promote sealing performance, improve durability and life, simplify processing technology, easy to assemble reduces the maintenance cost.
Description
Technical Field
The utility model belongs to the technical field of turn to drive arrangement, specifically indicate a be applicable to the transmission and the seal structure of the steering drive axle in water, dry land.
Background
Along with the development of the market, the steering drive axle not only needs to meet the operation requirements of the plain, but also needs to meet the relatively complex and severe use environments of paddy fields and the like.
The short fork axle of cardan shaft of current conventional cardan shaft structure steering drive axle is by axle sleeve guiding orientation, the short fork axle sealing motion form of cardan shaft both pull and rotation, oil blanket sealing performance is unstable, the oil leakage that appears in the easy, the unusual wearing and tearing of axle sleeve, oil blanket sealing performance and axle sleeve endurance life are poor, the rate of three-bag is high or not, along with the oil leakage problem of oil leakage, also can produce because of the not enough axle sleeve wearing and tearing that leads to of lubricating oil, or generate heat and hold quality problems such as axle, broken shaft, cause the hidden danger for driving safety.
The conventional universal shaft of the steering drive axle has the disadvantages of complex processing technology and high processing and heat treatment process cost, the whole universal shaft needs to be replaced after the long universal shaft and the short universal shaft are damaged, the time and the labor are wasted during the disassembly of the drive axle, and unnecessary maintenance cost is increased for users.
The sealing performance, durability and maintenance economy of the conventional steering drive axle cannot completely meet the actual requirements of the users at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steering drive axle's transmission and seal structure simplifies the structure, promotes sealing performance, improves life, aims at solving current conventional steering drive axle sealing performance unstable, the durability is poor, the technical problem that maintenance cost is high.
In order to achieve the technical purpose, the utility model adopts the technical scheme that:
a transmission and sealing structure of a steering drive axle comprises a main reduction box shell, wherein a differential mechanism is arranged in the main reduction box shell, the differential mechanism is provided with a differential mechanism half shaft gear, the differential mechanism half shaft gear is connected with a half shaft, half shaft shells are respectively arranged at two ends of the main reduction box shell, the half shaft shells are connected with a steering knuckle shell, the steering knuckle shell is connected with a hub reduction gear and a wheel hub, the wheel hub is positioned at the outer side of the hub reduction gear, and bearings are respectively arranged between the wheel hub and the hub reduction gear and between the wheel hub and the steering knuckle shell;
universal transmission shafts penetrate through the half shaft shell and the steering knuckle shell and comprise a long universal shaft fork shaft, a double fork and a short universal shaft fork, a bearing seat is arranged in the half shaft shell and is provided with the long universal shaft fork shaft through a bearing, the short universal shaft fork is arranged on the steering knuckle shell, the long universal shaft fork shaft is connected with the half shaft through a spline connecting sleeve, and the long universal shaft fork shaft and the short universal shaft fork are connected with the double fork through a cross shaft;
the hub reduction gear comprises a planetary gear carrier, the planetary gear carrier is rotatably provided with a sun gear shaft through a bearing, the sun gear shaft is provided with an external spline, the universal shaft short fork is provided with an internal spline, and the sun gear shaft is connected with the universal shaft short fork through the internal spline and the external spline;
the oil seal is arranged between the sun gear shaft and the steering knuckle shell, and the second muddy water-proof oil seal is arranged between the wheel hub and the steering knuckle shell.
As an improvement, the cardan shaft short fork is provided with a mounting hole, the inner spline is arranged in the mounting hole, and a sealing cover is arranged at the bottom of the mounting hole.
As a further improvement, an inner ring of the muddy water oil seal between the long fork shaft of the universal shaft and the bearing seat is fixed on the long fork shaft of the universal shaft, and an outer ring of the muddy water oil seal is fixed on the inner hole wall of the bearing seat.
As a further improvement, the sun gear shaft is designed as an integral structure, the outer side of the sun gear shaft is mounted on the planet carrier through a self-aligning roller bearing, the inner side of the sun gear shaft is rotatably mounted on the inner hole of the knuckle shell through a needle bearing, and two oil seals are arranged between the sun gear shaft and the knuckle shell.
As a further improvement, the two oil seals between the sun gear shaft and the knuckle housing are a compound oil seal and a grease oil seal, respectively.
As a further improvement, the knuckle housing is provided with an installation shaft, the installation shaft is provided with an installation hole, the hub is installed on the installation shaft through a tapered roller bearing, a second muddy water-proof oil seal is arranged between the hub and the installation shaft, the outer ring of the second muddy water-proof oil seal is fixed on the hub, and the inner ring of the second muddy water-proof oil seal is fixed on the installation shaft.
Due to the adoption of the technical scheme, the beneficial effects of the utility model are that:
the sun gear shaft adopts an integrated structure, the support form is adjusted from the shaft sleeve structure of the original traditional universal shaft to a rolling bearing structure, the friction form is changed from sliding friction to rolling friction, the lateral stress of the sun gear shaft is improved, and the sun gear shaft is convenient to take out during maintenance; the sun gear shaft is connected with the short fork of the universal shaft through the internal spline and the external spline, so that the use condition of the oil seal is improved, the sealing motion form of the oil seal and the shaft is changed from reciprocating drawing rotation into independent rotation, the durability is improved, the service life is prolonged, and the three-pack rate is effectively reduced; the special oil seal for preventing muddy water is adopted, so that the muddy water is prevented, the water is prevented, and the sand is prevented; the long fork shaft of the universal shaft is adjusted to be a split structure from an integrated structure, and the long fork shaft of the universal shaft is connected with the half shaft through the spline sleeve, so that the processing technology is simplified, and the maintenance cost is reduced.
Drawings
FIG. 1 is a schematic view of the internal structure of the present embodiment;
FIG. 2 is a schematic structural view of a universal drive shaft;
FIG. 3 is a schematic structural view of a sun gear shaft;
in the attached drawings, 1-a planet carrier, 2-a self-aligning roller bearing, 3-a sun gear shaft, 4-a needle roller bearing, 5-a composite oil seal, 6-a lubricating grease seal, 7-a wheel hub, 8-a cardan shaft short fork, 9-a second muddy water prevention oil seal, 10-an oil seal, 11-a steering knuckle shell, 12-a sealing cover, 13-a cross shaft, 14-a duplex fork, 15-a half shaft shell, 16-a cardan shaft long fork shaft, 17-an O-shaped ring, 18-a first muddy water prevention oil seal, 19-a bearing seat, 20-a bearing, 21-a spline connecting sleeve, 22-a half shaft, 23-a main reduction box shell and 24-a differential half shaft gear.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
As shown in fig. 1 to fig. 3, a transmission and sealing structure of a steering drive axle comprises a main speed reduction box shell 23 and half axle shells 15 installed at two ends of the main speed reduction box shell 23, wherein the half axle shells 15 are of a sleeve structure and comprise a left half axle shell and a right half axle shell, and the left half axle shell and the right half axle shell form the steering drive axle shell.
A differential is installed in a main reduction gearbox shell 23, the differential is provided with a differential side gear 24, the differential side gear 24 is connected with a half shaft 22, a half shaft shell 15 is connected with a steering knuckle shell 11, the steering knuckle shell 11 is connected with a hub reduction gear and a wheel hub 7, the wheel hub 7 is located on the outer side of the hub reduction gear, and bearings 20 are respectively arranged among the wheel hub, the hub reduction gear and the steering knuckle shell.
The universal transmission shaft penetrates through the half shaft shell 15 and the knuckle shell 11, the universal transmission shaft comprises a long universal shaft fork shaft 16, a duplex fork 14 and a short universal shaft fork 8, a bearing seat 19 is arranged in the half shaft shell 15, the long universal shaft fork shaft 16 is installed on the bearing seat 19 through a bearing 20, the knuckle shell 11 is provided with a short universal shaft fork 8, the long universal shaft fork shaft 16 is connected with a half shaft 22 through a spline connecting sleeve 21, and the long universal shaft fork shaft 16 and the short universal shaft fork 8 are connected with the duplex fork 14 through a cross shaft 13.
The hub reduction gear comprises a planet gear carrier 1, a sun gear shaft 3 is rotatably installed on the planet gear carrier 1 through a self-aligning roller bearing 2, the sun gear shaft 3 is provided with an external spline, a cardan shaft short fork 8 is provided with an internal spline, the sun gear shaft 3 is connected with the cardan shaft short fork 8 through the internal spline and the external spline, the sun gear shaft 3 and the cardan shaft short fork 8 can axially slide relatively, and the circumferential direction is relatively fixed.
An O-shaped ring 17 is arranged between the bearing seat 19 and the half shaft shell 15, a first muddy water-proof oil seal 18 is arranged between the universal shaft long fork shaft 16 and the bearing seat 19, an oil seal 10 is arranged between the sun gear shaft 3 and the steering knuckle shell 11, a second muddy water-proof oil seal 9 is arranged between the wheel hub 7 and the steering knuckle shell 11, specifically, the inner ring of the first muddy water-proof oil seal 18 between the universal shaft long fork shaft 16 and the bearing seat 19 is fixed on the universal shaft long fork shaft 16, and the outer ring is fixed on the inner hole wall of the bearing seat 19.
The transmission and sealing structure of the steering drive axle comprises a main reduction gearbox shell, a half-shaft shell, a steering knuckle shell and a hub reduction gear, wherein the half shaft in the main reduction gearbox shell is connected with the half-shaft shell and a long universal shaft, a double fork and a short universal shaft fork in the steering knuckle shell;
the sun gear shaft adopts an integrated structure, the support form is adjusted from the shaft sleeve structure of the original traditional universal shaft to a rolling bearing structure, the friction form is changed from sliding friction to rolling friction, the lateral stress of the sun gear shaft is improved, and the sun gear shaft is convenient to take out during maintenance;
the long universal shaft fork shaft is adjusted to be a split structure from an integrated structure, and is connected with the half shaft by the spline sleeve, so that the processing technology is simplified, the installation is convenient, and the maintenance cost is reduced;
and be equipped with seal structure between sun gear shaft and knuckle casing, between wheel hub and the knuckle casing, between the long fork axle of cardan shaft and the bearing frame, adopt and prevent special oil blanket of muddy water, prevent mud, waterproof, sand prevention, compare with current oil blanket structure, the performance is showing and is promoting.
In this embodiment, cardan shaft short fork 8 is equipped with the mounting hole, is equipped with the internal spline in the mounting hole, and the bottom of mounting hole is equipped with sealed lid 12, blocks that silt foreign matter gets into the mounting hole.
In the embodiment, the sun gear shaft 3 is designed as an integral structure, the outer side of the sun gear shaft 3 is installed on the planet carrier 1 through the self-aligning roller bearing 2, the inner side of the sun gear shaft is rotatably installed in an inner hole of the steering knuckle shell through the needle roller bearing 4, the structure is simplified, the processing technology is simplified, and two oil seals are arranged between the sun gear shaft and the steering knuckle shell to enhance the sealing performance.
Specifically, the two oil seals between the sun gear shaft 3 and the knuckle housing 11 are the composite oil seal 5 and the grease seal 6, respectively, and the sealing performance is good.
In this embodiment, the knuckle casing is equipped with the installation axle, and the installation axle is equipped with the mounting hole, and wheel hub passes through tapered roller bearing to be installed at installation epaxial, is equipped with second muddy water oil blanket 9 between wheel hub and the installation axle, and the outer lane of second muddy water oil blanket is fixed on wheel hub, and the inner circle of second muddy water oil blanket is fixed at installation epaxial, and simple to operate reduces three package rates, and the leakproofness is showing and is promoting.
The utility model provides a steering drive axle's transmission and seal structure simplifies the structure, simplifies processing technology, promotes sealing performance, improves durability and life, reduces the maintenance cost.
The above description is intended to illustrate the embodiments of the present invention, and not to limit the scope of the invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. A transmission and sealing structure of a steering drive axle is characterized by comprising a main speed reduction box shell, wherein a differential mechanism is arranged in the main speed reduction box shell, the differential mechanism is provided with a differential mechanism half shaft gear, the differential mechanism half shaft gear is connected with a half shaft, half shaft shells are respectively arranged at two ends of the main speed reduction box shell, the half shaft shells are connected with a steering knuckle shell, the steering knuckle shell is connected with a hub reduction gear and a wheel hub, the wheel hub is positioned at the outer side of the hub reduction gear, and bearings are respectively arranged between the wheel hub and the hub reduction gear and between the wheel hub and the steering knuckle shell;
a universal transmission shaft penetrates through the half-shaft shell and the knuckle shell, the universal transmission shaft comprises a long universal shaft fork shaft, a double fork and a short universal shaft fork, a bearing seat is arranged in the half-shaft shell, the long universal shaft fork shaft is mounted on the bearing seat through a bearing, the short universal shaft fork is arranged on the knuckle shell, the long universal shaft fork shaft is connected with the half shaft through a spline connecting sleeve, and the long universal shaft fork shaft and the short universal shaft fork are connected with the double fork through a cross shaft;
the hub reduction gear comprises a planetary gear carrier, the planetary gear carrier is rotatably provided with a sun gear shaft through a bearing, the sun gear shaft is provided with an external spline, the universal shaft short fork is provided with an internal spline, and the sun gear shaft is connected with the universal shaft short fork through the internal spline and the external spline;
the oil seal is arranged between the sun gear shaft and the steering knuckle shell, and the second muddy water-proof oil seal is arranged between the wheel hub and the steering knuckle shell.
2. The transmission and sealing structure of a steering driving axle according to claim 1, wherein the cardan shaft short fork is provided with a mounting hole, the mounting hole is internally provided with the internal spline, and the bottom of the mounting hole is provided with a sealing cover.
3. The transmission and sealing structure of a steering drive axle according to claim 1, wherein an inner ring of the first muddy water-proof oil seal between the long fork shaft of the universal shaft and the bearing seat is fixed on the long fork shaft of the universal shaft, and an outer ring of the first muddy water-proof oil seal is fixed on the inner hole wall of the bearing seat.
4. The transaxle drive and seal structure of claim 1 wherein the sun gear shaft is of unitary construction, the outer side of the sun gear shaft is mounted to the planet carrier by a self-aligning roller bearing, the inner side of the sun gear shaft is rotatably mounted to the inner bore of the knuckle housing by a needle bearing, and two oil seals are provided between the sun gear shaft and the knuckle housing.
5. The transaxle drive and seal structure of claim 4 wherein the two oil seals between the sun gear shaft and the knuckle housing are a compound oil seal and a grease oil seal, respectively.
6. The transmission and sealing structure of a steering drive axle according to claim 1, wherein the knuckle housing is provided with a mounting shaft, the mounting shaft is provided with a mounting hole, the hub is mounted on the mounting shaft through a tapered roller bearing, a second muddy water-proof oil seal is provided between the hub and the mounting shaft, an outer ring of the second muddy water-proof oil seal is fixed on the hub, and an inner ring of the second muddy water-proof oil seal is fixed on the mounting shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222053632.7U CN217944802U (en) | 2022-08-05 | 2022-08-05 | Transmission and sealing structure of steering drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222053632.7U CN217944802U (en) | 2022-08-05 | 2022-08-05 | Transmission and sealing structure of steering drive axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217944802U true CN217944802U (en) | 2022-12-02 |
Family
ID=84226400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222053632.7U Active CN217944802U (en) | 2022-08-05 | 2022-08-05 | Transmission and sealing structure of steering drive axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217944802U (en) |
-
2022
- 2022-08-05 CN CN202222053632.7U patent/CN217944802U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2134153C (en) | Power divider lubrication in tandem driving axles | |
| CN205736672U (en) | A kind of front drive axle of tractor | |
| US20120316024A1 (en) | Drive Axle Housing System for Reducing Oil Churning | |
| CN205978366U (en) | Gearbox that possesses power of getting function | |
| CN104385911A (en) | Front steering drive axle for large tractor | |
| JPS59174450U (en) | Lubrication mechanism in final reduction gear | |
| CN217944802U (en) | Transmission and sealing structure of steering drive axle | |
| CN204236240U (en) | Large tractor front steering drive axle | |
| CN111503251A (en) | Lubricating structure of differential device | |
| CN211145302U (en) | Electric drive assembly of dry differential mechanism and new energy automobile | |
| CN116006652A (en) | Differential mechanism assembly with differential lock | |
| CN206439405U (en) | A kind of power takeoff assembly input shaft end part sealing structure | |
| JP2001141038A (en) | Differential gear of transmission for ff vehicle | |
| CN213685134U (en) | Engineering vehicle wheel side speed reducer and mining dump truck | |
| CN110594394A (en) | Electric drive assembly of dry differential mechanism and new energy automobile | |
| CN212447099U (en) | Driving structure of driving wheel of electric vehicle | |
| CN210371899U (en) | Differential mechanism and drive shaft cooperation oil blanket structure and car | |
| CN211778832U (en) | Novel self-sealing differential mechanism | |
| CN108215696B (en) | Leveling device, leveling steering drive axle and tractor | |
| CN219172095U (en) | High horsepower driving front axle | |
| CN216242123U (en) | Novel differential mechanism assembly between wheels | |
| CN213575466U (en) | Wheel reduction box sealing combination structure | |
| CN207758490U (en) | Steering drive axle assembly | |
| CN209925558U (en) | Transmission and transfer case sealing connection structure | |
| CN220076525U (en) | Crawler-type agricultural vehicle driving device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |