CN202629025U - Novel double-middle shaft gearbox - Google Patents
Novel double-middle shaft gearbox Download PDFInfo
- Publication number
- CN202629025U CN202629025U CN 201220303847 CN201220303847U CN202629025U CN 202629025 U CN202629025 U CN 202629025U CN 201220303847 CN201220303847 CN 201220303847 CN 201220303847 U CN201220303847 U CN 201220303847U CN 202629025 U CN202629025 U CN 202629025U
- Authority
- CN
- China
- Prior art keywords
- gear
- odd
- roller bearing
- endoporus
- main tank
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/04—Combinations of toothed gearings only
- F16H37/042—Combinations of toothed gearings only change gear transmissions in group arrangement
- F16H37/043—Combinations of toothed gearings only change gear transmissions in group arrangement without gears having orbital motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The utility model discloses a novel double-middle shaft gearbox, comprising a main box and a secondary box. The main box and the secondary box are connected through a middle shell; an inner hole is arranged on the middle shell; double middle shafts are respectively arranged in the main box and the secondary box; engaged transmission gears are respectively arranged on the double middle shafts in the main box and the secondary box; a driving gear of the secondary box is matched with the inner hole of the middle shell through a bearing; an inner hole is arranged on the driving gear; a cylindrical roller bearing is arranged in the inner hole of the driving gear; the cylindrical roller bearing is matched with an output shaft; an inner hole is arranged on a back shell of the secondary box; a conical roller bearing is arranged in the inner hole of the back shell; the conical roller bearing is matched with the output shaft; and the transmission gear uses an inclined gear. The engagement stability of the gear is improved; the engagement noise is reduced; and the bearing capability and the service life and the gearbox can be improved.
Description
Technical field
The utility model relates to automobile technical field, relates in particular to the new type double jack shaft gearbox that a kind of heavy-duty car uses.
Background technique
Generally adopt the twin countershaft transmission structure in the heavy-duty automotive speed changer technology of existing technology; This structure has power dividing, big, the reliability advantages of higher of simple in structure, bearing capacity; But require the coherence request of two countershaft-gear circumferencial directions running high during twin countershaft transmission work, gear generally adopts straight-tooth simultaneously, the shortcoming that particularly gear engagement impact was big when running up, noise is higher when the straight-tooth gear engagement existed running; And along with the development of society; Increasingly high to the automobile noise requirement, speed changer reduces transmission noise and has important function to reducing the car load noise as the important noise source in the car load.Therefore be under the situation of two jack shaft structures at main tank, odd-side, the bearing capacity that has not only reduced the transmission assembly noise but also improved transmission assembly is a problem that presses for solution.
Summary of the invention
The utility model is exactly for solving the shortcoming that gear engagement impact was big, noise is higher when two jack shaft gearboxes that existing technology exists ran up; A kind of new type double jack shaft gearbox is provided; Improve the gear engagement stationarity, reduced gearing noise, the bearing capacity and the working life of having improved gearbox.
The utility model adopts technological scheme to be:
A kind of new type double jack shaft gearbox comprises main tank, odd-side, and main tank is connected through mesochite with odd-side; Mesochite is provided with endoporus, is respectively equipped with two jack shafts in main tank, the odd-side, is respectively equipped with the driving gear of engagement on the two jack shafts in main tank, the odd-side; The actuation gear of said odd-side cooperates with the endoporus of mesochite through bearing, and actuation gear is provided with endoporus, is provided with roller bearing in the endoporus of actuation gear; Roller bearing cooperates with output shaft; The back cover of odd-side is provided with endoporus, is provided with tapered roller bearing in the endoporus of back cover, and tapered roller bearing cooperates with output shaft.
Said driving gear adopts helical gear.The helical gear structure has improved the bearing capacity and the life-span of main tank and odd-side.
Forward gear gear in the said main tank adopts the thin and tall profile of tooth helical teeth of standard of little modulus, big tooth depth coefficient.
The utility model working principle: the utility model comprises main tank, odd-side, and main tank is connected through mesochite with odd-side, and mesochite is provided with endoporus; Be respectively equipped with two jack shafts in main tank, the odd-side, be respectively equipped with the driving gear of engagement on the two jack shafts in main tank, the odd-side, the actuation gear of said odd-side cooperates with the endoporus of mesochite through bearing; Actuation gear is provided with endoporus; Be provided with roller bearing in the endoporus of actuation gear, roller bearing cooperates with output shaft, and the back cover of odd-side is provided with endoporus; Be provided with tapered roller bearing in the endoporus of back cover, tapered roller bearing cooperates with output shaft.The output shaft tapered roller bearing through the rear end respectively supports and the supplemental support of the roller bearing of front end, and this dual-support structure has reduced the influence of external factor to gearbox inside proper functioning, improves the working life of odd-side.The driving gear of said engagement adopts helical gear, the bearing capacity and the life-span of having improved main tank and odd-side.Forward gear gear in the said main tank adopts the thin and tall profile of tooth helical teeth of standard of little modulus, big tooth depth coefficient; Through rationally choosing to design parameters such as helical gear modulus, pressure angle, tooth depth coefficient, modification coefficient, helix angles; Improve accuracy of manufacturing to guarantee the strength of gear teeth; Improve the gear engagement stationarity, reduce gearing noise.
The beneficial effect of the utility model is:
Output shaft respectively the tapered roller bearing through the rear end support and the supplemental support of the roller bearing of front end, reduced the influence of external factor to gearbox inside proper functioning, improve the working life of odd-side;
2. adopt helical gear structure, the bearing capacity and the life-span of having improved main tank and odd-side;
3. the forward gear gear in the said main tank adopts the thin and tall profile of tooth helical teeth of standard of little modulus, big tooth depth coefficient, improves accuracy of manufacturing to guarantee the strength of gear teeth, improves the gear engagement stationarity, reduces gearing noise.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is an output shaft front end auxiliary support structure partial view;
Wherein, 1, mesochite; 2, odd-side actuation gear; 3, roller bearing; 4, output shaft; 5, tapered roller bearing; 6, back cover, 7. main tank, 8. odd-side.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further as follows:
A kind of new type double jack shaft gearbox comprises main tank 7, odd-side 8, and main tank 7 is connected through mesochite 1 with odd-side 8; Mesochite 1 is provided with endoporus, is respectively equipped with two jack shafts in main tank 7, the odd-side 8, is respectively equipped with the driving gear of engagement on the two jack shafts in main tank 7, the odd-side 8; The actuation gear 2 of said odd-side cooperates with the endoporus of mesochite 1 through bearing, and actuation gear 2 is provided with endoporus, is provided with roller bearing 3 in the endoporus of actuation gear 2; Roller bearing 3 cooperates with output shaft 4; The back cover 6 of odd-side 8 is provided with endoporus, is provided with tapered roller bearing 5 in the endoporus of back cover 6, and tapered roller bearing 5 cooperates with output shaft 4.The tapered roller bearing 5 of output shaft 4 through the rear end supports and the supplemental support of the roller bearing 3 of front end has realized the dual-support structure of output shaft 4 having reduced the influence of external factor to gearbox inside proper functioning, improves the working life of odd-side 8.Said driving gear adopts helical gear.The helical gear structure has improved the bearing capacity and the life-span of main tank 7 and odd-side 8.Forward gear gear in the said main tank 7 adopts the thin and tall profile of tooth helical teeth of standard of little modulus, big tooth depth coefficient.The design key of accurate thin and tall profile of tooth helical teeth design gear is rationally choosing of design parameters such as modulus, pressure angle, tooth depth coefficient, modification coefficient, helix angle, improves accuracy of manufacturing to guarantee the strength of gear teeth, improves the gear engagement stationarity, reduces gearing noise.
Though the above-mentioned accompanying drawing that combines is described the embodiment of the utility model; But be not restriction to the utility model protection domain; One of ordinary skill in the art should be understood that; On the basis of the technological scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection domain of the utility model.
Claims (3)
1. a new type double jack shaft gearbox comprises main tank, odd-side, and main tank is connected through mesochite with odd-side; Mesochite is provided with endoporus, is respectively equipped with two jack shafts in main tank, the odd-side, is respectively equipped with the driving gear of engagement on the two jack shafts in main tank, the odd-side; It is characterized in that the actuation gear of said odd-side cooperates with the endoporus of mesochite through bearing, actuation gear is provided with endoporus; Be provided with roller bearing in the endoporus of actuation gear, roller bearing cooperates with output shaft, and the back cover of odd-side is provided with endoporus; Be provided with tapered roller bearing in the endoporus of back cover, tapered roller bearing cooperates with output shaft.
2. new type double jack shaft gearbox as claimed in claim 1 is characterized in that, said driving gear adopts helical gear.
3. new type double jack shaft gearbox as claimed in claim 1, its characteristic, the forward gear gear in the said main tank adopts the thin and tall profile of tooth helical teeth of standard of little modulus, big tooth depth coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220303847 CN202629025U (en) | 2012-06-27 | 2012-06-27 | Novel double-middle shaft gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220303847 CN202629025U (en) | 2012-06-27 | 2012-06-27 | Novel double-middle shaft gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202629025U true CN202629025U (en) | 2012-12-26 |
Family
ID=47382230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220303847 Expired - Lifetime CN202629025U (en) | 2012-06-27 | 2012-06-27 | Novel double-middle shaft gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202629025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734441A (en) * | 2012-06-27 | 2012-10-17 | 中国重汽集团济南动力有限公司 | Novel dual-intermediate shaft gearbox |
-
2012
- 2012-06-27 CN CN 201220303847 patent/CN202629025U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734441A (en) * | 2012-06-27 | 2012-10-17 | 中国重汽集团济南动力有限公司 | Novel dual-intermediate shaft gearbox |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |