CN207648059U - Front drive axle of tractor deceleration transmission system - Google Patents
Front drive axle of tractor deceleration transmission system Download PDFInfo
- Publication number
- CN207648059U CN207648059U CN201721787848.9U CN201721787848U CN207648059U CN 207648059 U CN207648059 U CN 207648059U CN 201721787848 U CN201721787848 U CN 201721787848U CN 207648059 U CN207648059 U CN 207648059U
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- gear
- bevel gear
- planetary
- gear pair
- tractor
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Abstract
The utility model discloses a kind of front drive axle of tractor deceleration transmission systems, including central bevel gear pair, second level bevel gear pair, end bevel gear pair and epicyclic reduction gear unit, power is divided into symmetrical two-way by central driving shaft, it is connected with central bevel gear pair per semiaxis one end all the way, the vertical shaft rotation in the second bevel gear pair driving hub reduction gear of the other end.Epicyclic reduction gear unit is arranged outside hub reduction gear, and the end bevel gear pair of vertical shaft one end is connected with epicyclic reduction gear unit.Epicyclic reduction gear unit includes sun gear, several planetary gears, planet carrier and gear ring.The reduction ratio of existing front drive axle of tractor is increased to 30 or more by the utility model, increases the ground clearance of tractor, and improve tractor passes through performance.Backbone sealing ring and sealing ring make epicyclic reduction gear unit achieve the effect that integral sealing, substantially prolong the service life of planetary gear pair, improve the reliability of the utility model.
Description
Technical field
The utility model is related to a kind of tractor transmission system, especially one kind can increasing front drive axle of tractor reduction ratio
Transmission system, belong to agricultural machinery technological field.
Background technology
The drive mechanism of existing front drive axle of tractor is as follows：Central driving shaft passes through point positioned at front driving axle center
Power is divided into symmetrical two-way by the central transmission bevel gear pair in dynamic case, per semiaxis one end horizontally disposed all the way respectively in
Bevel gear pair linking, the semiaxis other end is entreated to drive the vertical shaft in hub reduction gear to rotate by the second bevel gear pair.Vertical shaft passes through
End bevel gear pair drives drive shaft rotation, to drive the steel ring being fixedly connected with drive shaft end rotation, drives tractor
Front-wheel is walked.Due to the limitation of structure, the deceleration of bevel gear pairs at different levels is smaller, the total reduction ratio of front driving axle generally 16 with
Under, leading to tractor overall performance, there are following two problems：
1）Central driving shaft, transfer case and hub reduction gear load are larger.
2）Since the deceleration of front driving axle is smaller, cause the rotating speed of drive shaft higher, in order to avoid the walking of tractor
Excessive velocities can only reduce the diameter of front driving wheel, so that tractor ground clearance is smaller, influence passing through for tractor
Property.
Utility model content
The purpose of this utility model proposes a kind of front drive axle of tractor deceleration transmission system, makes front drive axle of tractor
Reduction ratio is more than 30.
The utility model is achieved by the following technical programs：
A kind of front drive axle of tractor deceleration transmission system, including central bevel gear pair, second level bevel gear pair, end umbrella
Power is divided into symmetrically by gear pair and epicyclic reduction gear unit, central driving shaft by the central bevel gear pair in transfer case
Two-way is connected per semiaxis one end horizontally disposed all the way with central bevel gear pair, the second bevel gear pair driving of the semiaxis other end
Vertical shaft rotation in hub reduction gear；Epicyclic reduction gear unit is arranged outside hub reduction gear, the end umbrella tooth of vertical shaft one end
Wheel set is connected with epicyclic reduction gear unit；The end bevel gear pair includes that the end cone pinion being engaged with each other and end are big
Bevel gear, end cone pinion are fixed on one end of vertical shaft, and end large bevel gear is supported on drive shaft one by spring bearing
On end；Epicyclic reduction gear unit includes sun gear, several planetary gears, planetary wheel carrier and gear ring, one end of end large bevel gear
Axially extending at sun gear, several planetary gears are supported on by planetary gear pin on planetary wheel carrier respectively, planetary gear upper and lower sides difference
It is engaged with sun gear and gear ring, gear ring side is fixed on planetary reducer shell, is connect in the middle part of planetary wheel carrier and drive shaft,
Drive shaft both ends are supported on by driving shaft bearing on Gear Planet Transmission shell respectively, the end face plectane and steel of drive shaft one end end
Circle is fixedly connected.
The purpose of this utility model can also be further realized by following technical measures.
Further, several planetary gears are supported on by needle bearing on planetary gear pin one end respectively, planetary gear pin
The other end is fixed on the longitudinal edge of planetary wheel carrier one end.The planetary wheel carrier is connect in the middle part of drive shaft by spline.
Further, trip bolt sequentially passes through Gear Planet Transmission shell outer rim and gear ring, and it is external to be screwed into hub reducer casing
In edge.
Further, it is equipped with backbone sealing ring between drive shaft outer end radial direction and Gear Planet Transmission case inside face, is driving
Sealing ring is equipped between the end face plectane medial surface and Gear Planet Transmission shell hull outside of moving axis one end end.
The utility model is compact-sized, easy to use.It is additionally arranged planet outside the hub reduction gear of front drive axle of tractor
Mechanical reduction gear, since the reduction ratio of epicyclic reduction gear unit is more than 2, thus can subtracting existing front drive axle of tractor
Speed ratio increases to 2 times or more, and reduction ratio is made to reach 30 or more.It is relatively large in diameter to make front drive axle of tractor both ends can be used
Front driving wheel, to increase the ground clearance of tractor, improve tractor by performance, while significantly reducing central transmission
The load of axis, transfer case, gearbox.Backbone sealing ring and sealing are provided between drive shaft outer end and Gear Planet Transmission shell
Circle so that epicyclic reduction gear unit achievees the effect that integral sealing, substantially prolongs the service life of planetary gear pair, improves
The reliability of the utility model.
The advantages of the utility model and feature will carry out diagram reconciliation by the non-limitative illustration of preferred embodiment below
It releases, these embodiments, is only provided as an example with reference to attached drawing.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model peace.
Specific implementation mode
The utility model is described in further detail with the embodiment of 70 horsepowers of paddy field tractors below in conjunction with the accompanying drawings.
As shown in Figure 1, the present embodiment includes central bevel gear pair 1, second level bevel gear pair 2, end bevel gear pair 3 and row
Power is divided into symmetrical two-way by star mechanical reduction gear 4, central driving shaft 5 by the central bevel gear pair 1 in transfer case 6,
It is connected with central bevel gear pair 1 per 7 one end of horizontally disposed semiaxis all the way, 2 driving wheel of the second bevel gear pair of 7 other end of semiaxis
Vertical shaft 81 in side reducer 8 rotates.Epicyclic reduction gear unit 4 is arranged outside hub reduction gear 8, the end of 81 one end of vertical shaft
Bevel gear pair 3 is connected with epicyclic reduction gear unit 4.End bevel gear pair 3 includes 31 He of end cone pinion being engaged with each other
End large bevel gear 32, end cone pinion 31 are fixed on one end of vertical shaft 81, and end large bevel gear 32 passes through spring bearing
33 are supported on 34 one end of drive shaft.
Epicyclic reduction gear unit 4 includes 41,3 planetary gears 42 of sun gear, planetary wheel carrier 43 and gear ring 44, end gamp
One end of gear 32 is axially extending at sun gear 41, and end bevel gear pair 3 and epicyclic reduction gear unit 4 are connected.3
Planetary gear 42 is supported on by needle bearing 45 on 46 one end of planetary gear pin respectively, and 46 other end of planetary gear pin passes through interference fit
It is fixed on the longitudinal edge 431 of 43 one end of planetary wheel carrier, planetary gear 42 is supported using needle bearing 45, can reduce planetary gear 42
Radial dimension so that the utility model more compact structure.Planetary wheel carrier 43 is connect with 34 middle part of drive shaft by spline 432,
42 upper and lower sides of planetary gear are engaged with sun gear 41 and gear ring 44 respectively, and trip bolt 48 sequentially passes through 47 outer rim of Gear Planet Transmission shell
With gear ring 44, it is screwed into 8 outer rim of hub reduction gear shell so that epicyclic reduction gear unit 9 is fixedly connected with hub reduction gear 8
Integrally, and the outside diameter of gear ring 44 is identical with the outside diameter of hub reduction gear shell 8 and Gear Planet Transmission shell 47, can be with
The appearance and size for effectively reducing the utility model, mitigates the weight of epicyclic reduction gear unit 4.34 both ends of drive shaft lead to respectively
Axle bearing 341 of overdriving is supported on Gear Planet Transmission shell 47, and the end face plectane 342 of 34 one end end of drive shaft is fixed with steel ring
Connection.
It is equipped with backbone sealing ring 471 between 34 outer end radial direction of drive shaft and 47 medial surface of Gear Planet Transmission shell, is driving
It is equipped with sealing ring 472 between 47 outside of 342 medial surface of end face plectane and Gear Planet Transmission shell shell of 34 one end end of axis, to row
Star mechanical reduction gear 5 carries out integral sealing, to substantially prolong the service life of planetary gear pair.
In addition to the implementation, the utility model can also have other embodiment, all to use equivalent replacement or equivalent change
The technical solution to be formed is changed, is all fallen in the protection domain of the requires of the utility model.
Claims (5)
1. a kind of front drive axle of tractor deceleration transmission system, including central bevel gear pair, second level bevel gear pair and end umbrella
Power is divided into symmetrical two-way by gear pair, central driving shaft by the central bevel gear pair in transfer case, is set per level all the way
The semiaxis one end set is connected with central bevel gear pair, the vertical shaft in the second bevel gear pair driving hub reduction gear of the semiaxis other end
Rotation；It is characterized in that：Epicyclic reduction gear unit is arranged outside hub reduction gear, the end bevel gear pair and row of vertical shaft one end
Star mechanical reduction gear is connected；The end bevel gear pair includes the end cone pinion being engaged with each other and end large bevel gear,
End cone pinion is fixed on one end of vertical shaft, and end large bevel gear is supported on by spring bearing on drive shaft one end；Row
Star mechanical reduction gear includes sun gear, several planetary gears, planetary wheel carrier and gear ring, and one end of end large bevel gear is axially extending
At sun gear, several planetary gears are supported on by planetary gear pin on planetary wheel carrier respectively, planetary gear upper and lower sides respectively with sun gear
It is engaged with gear ring, gear ring side is fixed on planetary reducer shell, is connect in the middle part of planetary wheel carrier and drive shaft, drive shaft two
End is supported on by driving shaft bearing on Gear Planet Transmission shell respectively, and the end face plectane of drive shaft one end end is fixed with steel ring to be connected
It connects.
2. front drive axle of tractor deceleration transmission system as described in claim 1, it is characterised in that：Several planetary gears point
It is not supported on planetary gear pin one end by needle bearing, the planetary gear pin other end is fixed on the longitudinal edge of planetary wheel carrier one end
On.
3. front drive axle of tractor deceleration transmission system as described in claim 1, it is characterised in that：The planetary wheel carrier center
It is connect by spline in the middle part of drive shaft.
4. front drive axle of tractor deceleration transmission system as described in claim 1, it is characterised in that：Trip bolt sequentially passes through
Gear Planet Transmission shell outer rim and gear ring are screwed into the external edge of hub reducer casing.
5. front drive axle of tractor deceleration transmission system as described in claim 1, it is characterised in that：In drive shaft outer end radial direction
Backbone sealing ring, end face plectane medial surface and planet in drive shaft one end end are equipped between Gear Planet Transmission case inside face
Sealing ring is equipped between transmission housing hull outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721787848.9U CN207648059U (en) | 2017-12-20 | 2017-12-20 | Front drive axle of tractor deceleration transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721787848.9U CN207648059U (en) | 2017-12-20 | 2017-12-20 | Front drive axle of tractor deceleration transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207648059U true CN207648059U (en) | 2018-07-24 |
Family
ID=62877688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721787848.9U Active CN207648059U (en) | 2017-12-20 | 2017-12-20 | Front drive axle of tractor deceleration transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207648059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882925A (en) * | 2017-12-20 | 2018-04-06 | 江苏沃得农业机械有限公司 | Front drive axle of tractor deceleration transmission system |
-
2017
- 2017-12-20 CN CN201721787848.9U patent/CN207648059U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882925A (en) * | 2017-12-20 | 2018-04-06 | 江苏沃得农业机械有限公司 | Front drive axle of tractor deceleration transmission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 212311 Zhenjiang city of Jiangsu province Danyang City Picheng fuwode Industrial Park Patentee after: Jiangsu wode Agricultural Machinery Co., Ltd Address before: 212311 Zhenjiang city of Jiangsu province Danyang City Picheng fuwode Industrial Park Patentee before: JIANGSU WORLD AGRICULTURAL MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |