CN103883681B - Improvement in planet final drive of tractor - Google Patents
Improvement in planet final drive of tractor Download PDFInfo
- Publication number
- CN103883681B CN103883681B CN201410110122.6A CN201410110122A CN103883681B CN 103883681 B CN103883681 B CN 103883681B CN 201410110122 A CN201410110122 A CN 201410110122A CN 103883681 B CN103883681 B CN 103883681B
- Authority
- CN
- China
- Prior art keywords
- planet
- tractor
- output shaft
- improvement
- gear
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/2809—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels
- F16H1/2836—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels by allowing limited movement of the planets relative to the planet carrier or by using free floating planets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear
Abstract
The invention belongs to the technical field of final drive of tractors, and relates to an improvement in planet final drive of a tractor. The improvement comprises an output shaft and a driving shaft, wherein the output shaft and the driving shaft are coaxially arranged. The output shaft is sleeved with a shaft sleeve, a sun wheel is arranged at one end of the driving shaft, planet wheels meshed with the sun wheel for drive are installed on planet wheel axles installed on the output shaft, a gear ring arranged on the shaft sleeve and provided with internal teeth is meshed with the planet wheels for drive, a bearing and an intermediate ring are sequentially arranged between each planet wheel axle and the corresponding planet wheel in a sleeved mode from inside to outside, and radial floating intervals are formed between the planet wheels and the corresponding intermediate rings. The improvement has the advantages that the intermediate rings are arranged, the radial floating intervals are formed between the planet wheels and the corresponding intermediate rings to form buffer oil films, the planet wheels can be connected in a suspension mode, uniform loads of the planet wheels in the tooth length direction in the working process are guaranteed, and the service life of the planet wheels is prolonged.
Description
Technical field
The invention belongs to tractor end drive technology field, refer in particular to a kind of improvement of tractor planet final drive.
Background technology
Referring to Fig. 1: at present, tractor planet final drive, include the output shaft 80 that is coaxially set and driving shaft 10(or
Claim sun gear semiaxis), output shaft 80 is set with axle sleeve 70, driving shaft 10 is provided with sun gear 11, output shaft 80 is installed
Planet wheel spindle 50 on uniform three planetary gears 20 of circumference, described planetary gear 20 and sun gear 11 engaged transmission are installed,
The gear teeth 61 of the gear ring 60 with internal tooth of setting and the gear teeth 21 engaged transmission of described planetary gear 20, planetary gear on axle sleeve 70
It is provided with bearing 40, the differential mechanism in the spline 12 of setting on driving shaft 10 and gear box of tractor between axle 50 and planetary gear 20
The spline connection of axle shaft gear, due to the gear ring with internal tooth, planetary gear, install planetary gear expert's carrier foozle,
When three planetary gears are respectively with gear ring and sun gear engaged transmission, on tooth length direction, uneven load, leads to planetary gear initial failure.
Content of the invention
It is an object of the invention to provide a kind of improvement of the tractor planet final drive of planetary gear long service life.
The object of the present invention is achieved like this:
A kind of improvement of tractor planet final drive, including the output shaft being coaxially set and driving shaft, on output shaft
Be set with axle sleeve, one end of driving shaft is provided with sun gear, on output shaft install planet wheel spindle on be provided with described too
The planetary gear of sun wheel engaged transmission, on axle sleeve, the gear ring with internal tooth of setting and described planetary gear engaged transmission, described
It is set with bearing and middle ring between planet wheel spindle and planetary gear from inside to outside successively, between planetary gear and middle ring, be provided with footpath
To flying height.
Above-mentioned planet wheel spindle and be sleeved on bearing on planet wheel spindle, middle ring and planetary gear successively with internal tooth
Gear ring and sun gear between circumference be evenly equipped with three sets.
Above-mentioned bearing is needle bearing.
Front and rear part between above-mentioned output shaft and axle sleeve is supported by needle bearing respectively.
The above-mentioned gear ring with internal tooth is screwed onto in layman's carrier that sleeve end is extended.
Above-mentioned planet wheel spindle is screwed onto in expert's carrier, and expert's carrier is passed through pin key or spline or is bolted to export
One end of axle, the other end of output shaft is provided with tractor wheel installation position.
Above-mentioned driving shaft and sun gear are integral type structure, the other end of driving shaft integrally formed with involute spline,
So that the spline connection with the differential side gear in gear box of tractor.
The present invention projects and beneficial having the technical effect that compared to existing technology
The present invention is directed to the defect of planetary gear initial failure in prior art, and one end of driving shaft is arranged to involute flower
Key is connected with being suspended with the spline of the differential side gear in gear box of tractor, and between planet wheel spindle and planetary gear by
It is set with bearing and middle ring from inside to outside successively, be provided with the flying height of radial direction between planetary gear and middle ring so that actively
When sun gear on axle drives planetary gear engaged transmission, planetary gear is in suspend to connect, and the axis of driving shaft is basically unchanged, and does not affect
The braking effect of the brake(-holder) block of wet brake installed on driving shaft outside sun gear, due to planetary gear and its neighbouring accessory
All it is immersed in lubricating oil, described flying height forms a kind of buffering oil film it is ensured that planetary gear is in tooth length direction when working
On all loads, extend the service life of planetary gear.
Brief description
Fig. 1 is the sectional view of prior art.
Fig. 2 is the sectional view of the present invention.
Fig. 3 is a cloth enlarged drawing of Fig. 2.
Fig. 4 is the transmission principle schematic diagram of the present invention.
Specific embodiment
With specific embodiment, the invention will be further described below in conjunction with the accompanying drawings, referring to Fig. 2 Fig. 4:
A kind of improvement of tractor planet final drive, including the output shaft 80 and the driving shaft 10 that are coaxially set, output
Axle sleeve 70 is set with axle 80, one end of driving shaft 10 is provided with sun gear 11, on the planet wheel spindle 50 that output shaft 80 is installed
Planetary gear 20 with described sun gear 11 engaged transmission is installed, the gear ring 60 with internal tooth 61 of setting and institute on axle sleeve 70
External tooth 21 engaged transmission of the planetary gear 20 stated, is set between described planet wheel spindle 50 and planetary gear 20 from inside to outside successively
Bearing 40 and middle ring 30, are provided with the flying height h of radial direction between planetary gear 20 and middle ring 30.
Above-mentioned planet wheel spindle 50 and be sleeved on bearing 40 on planet wheel spindle 50, middle ring 30 and planetary gear 20 successively
Between the gear ring 60 with internal tooth 61 and sun gear 11, circumference is evenly equipped with three sets.
Above-mentioned bearing 40 is needle bearing, in order to carry larger load.
Front and rear part between above-mentioned output shaft 80 and axle sleeve 70 is passed through needle bearing 41,42 respectively and is supported, in order to hold
Carry larger load.
The above-mentioned gear ring 60 with internal tooth 61 is screwed onto in layman's carrier 71 that axle sleeve 70 end is extended.
Above-mentioned planet wheel spindle 50 is screwed onto in expert's carrier 51, and expert's carrier 51 passes through pin key or spline or bolt connection
In one end of output shaft 80, the other end of output shaft is provided with tractor wheel installation position 81.
Above-mentioned driving shaft 10 and sun gear 11 are integral type structure, and the other end of driving shaft 10 is integrally formed with involute
Spline 13, so as with gear box of tractor in differential side gear spline connection.
Why the present invention arranges middle ring and arranges the flying height of radial direction between planetary gear and middle ring, rather than
On the back lash of the sun gear gear teeth on driving shaft and the key teeth of involute spline, setting fit clearance realizes floating connection,
It is because the bad setting of this fit clearance, this fit clearance is little, then floating load balancing effect is poor, this fit clearance is greatly although float
Effect of load balancing mechanism is good, but during spline transmitting torque, fit clearance is excessive, is easily caused the premature wear of spline, in addition, in sun gear
The brake(-holder) block equipped with wet brake for the spline 12 is passed through on the driving shaft 10 in outside, driving shaft 10 floats excessive, to braking effect
Also have an impact.
Above-described embodiment is only presently preferred embodiments of the present invention, not limits the scope of the invention according to this, therefore: all according to
The equivalence changes that the structure of the present invention, shape, principle are done, all should be covered by within protection scope of the present invention.
Claims (6)
1. a kind of improvement of tractor planet final drive, including the output shaft being coaxially set and driving shaft, output shaft covers
Equipped with axle sleeve, one end of driving shaft is provided with sun gear, and the planet wheel spindle that output shaft is installed is provided with and the described sun
The planetary gear of wheel engaged transmission, the gear ring with internal tooth of setting and described planetary gear engaged transmission on axle sleeve, its feature exists
In: it is set with bearing and middle ring between described planet wheel spindle and planetary gear from inside to outside successively, described bearing is needle roller
Bearing, is provided with the flying height of radial direction between planetary gear and middle ring.
2. a kind of tractor planet final drive according to claim 1 improvement it is characterised in that: described planetary gear
Axle and be sleeved on bearing on planet wheel spindle, middle ring and planetary gear week between the gear ring with internal tooth and sun gear successively
To being evenly equipped with three sets.
3. a kind of tractor planet final drive according to claim 1 improvement it is characterised in that: described output shaft
Front and rear part and axle sleeve between is supported by needle bearing respectively.
4. a kind of tractor planet final drive according to claim 1 improvement it is characterised in that: described with interior
The gear ring of tooth is screwed onto in layman's carrier that sleeve end is extended.
5. a kind of tractor planet final drive according to claim 1 improvement it is characterised in that: described planetary gear
Axle is screwed onto in expert's carrier, expert's carrier pass through pin key or spline or the one end being bolted to output shaft, output shaft another
One end is provided with tractor wheel installation position.
6. a kind of tractor planet final drive according to any one of claim 15 improvement it is characterised in that: institute
The driving shaft stated and sun gear are integral type structure, the other end of driving shaft integrally formed with involute spline so that with dilatory
The spline connection of the differential side gear in machine gearbox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410110122.6A CN103883681B (en) | 2014-03-22 | 2014-03-22 | Improvement in planet final drive of tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410110122.6A CN103883681B (en) | 2014-03-22 | 2014-03-22 | Improvement in planet final drive of tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103883681A CN103883681A (en) | 2014-06-25 |
| CN103883681B true CN103883681B (en) | 2017-02-01 |
Family
ID=50952740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410110122.6A Active CN103883681B (en) | 2014-03-22 | 2014-03-22 | Improvement in planet final drive of tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103883681B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003603A (en) * | 2015-07-06 | 2015-10-28 | 重庆大学 | Load-sharing planetary reducer |
| CN105065636A (en) * | 2015-07-30 | 2015-11-18 | 上海汽车变速器有限公司 | Transmission overdrive gear shaft system device |
| CN105805288B (en) * | 2016-04-14 | 2018-10-30 | 湘潭大学 | A kind of planetary gear roller floating load balancing structure of equipment of toroid planetary worm driving |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2316168Y (en) * | 1997-07-24 | 1999-04-28 | 山东拖拉机厂 | Speed-change transmission for tractor |
| CN2334955Y (en) * | 1998-01-20 | 1999-08-25 | 张宪英 | Oil membrane floating load-uniformed planetary speed reducer |
| CN203756878U (en) * | 2014-03-22 | 2014-08-06 | 浙江海天机械有限公司 | Improvement of tractor planet final drive |
-
2014
- 2014-03-22 CN CN201410110122.6A patent/CN103883681B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2316168Y (en) * | 1997-07-24 | 1999-04-28 | 山东拖拉机厂 | Speed-change transmission for tractor |
| CN2334955Y (en) * | 1998-01-20 | 1999-08-25 | 张宪英 | Oil membrane floating load-uniformed planetary speed reducer |
| CN203756878U (en) * | 2014-03-22 | 2014-08-06 | 浙江海天机械有限公司 | Improvement of tractor planet final drive |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103883681A (en) | 2014-06-25 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Zhenghua Inventor before: Chen Zhengwen |
|
| CB03 | Change of inventor or designer information |