CN202646622U - Axial positioning structure for speed changing box main shaft of main box double-intermediate shaft and auxiliary box planetary gear train - Google Patents
Axial positioning structure for speed changing box main shaft of main box double-intermediate shaft and auxiliary box planetary gear train Download PDFInfo
- Publication number
- CN202646622U CN202646622U CN 201220339450 CN201220339450U CN202646622U CN 202646622 U CN202646622 U CN 202646622U CN 201220339450 CN201220339450 CN 201220339450 CN 201220339450 U CN201220339450 U CN 201220339450U CN 202646622 U CN202646622 U CN 202646622U
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- shaft
- main shaft
- input shaft
- main
- box
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Abstract
The utility model discloses an axial positioning structure for a speed changing box main shaft of a main box double-intermediate shaft and an auxiliary box planetary gear train. A hole is drilled at the front end of the main shaft; a bearing seat ring is arranged in the hole; a shaft neck at the front end of an input shaft extends into the bearing seat ring; a wear-resisting lining is arranged in the bearing seat ring; a gap is reserved between the shaft neck at the front end of the input shaft and the lining to realize flotation of the main shaft; two high thrust bearings are arranged between the input shaft and the bearing seat ring; the two high thrust bearings are respectively positioned on two sides of a high drive gear on the input shaft; a rear support positioning shaft is arranged at the rear end of the main shaft; an adjusting gasket and a small thrust bearing assembly are arranged on the rear support positioning shaft; and the small thrust bearing assembly is adhered to the end surface of an inner hole of an output shaft by the adjusting gasket so as to realize axial positioning. The axial positioning structure is reasonable in design, so that the bidirectional axial positioning of the main shaft can be realized, the axial force division of gear shift axial force and helical tooth main shaft gear can be borne, and a function of the flotation of the main shaft in the conventional double pairs of an auxiliary shaft speed changing box can be realized.
Description
Technical field
The utility model is the two jack shafts of a kind of main tank and odd-side planetary gear train transmission main shaft axial positioning structure.
Background technique
In heavy gearbox designs, the combination of the two jack shafts of main tank and odd-side planetary gear train is a kind of perfect scheme, and the two intermediate shaft structures of main tank are simple, and bearing capacity is strong; Odd-side planetary gear train compact structure, transmitting torque is large.Dual-gripper before and after the planetary gear train structure has effectively guaranteed the support stiffness of output shaft, has got rid of the impact of car load factor on the normal operation of gearbox inside, the working life of obviously improving odd-side.
Dual-support structure before and after the odd-side planetary gear train adopts, its front support is positioned at the mesochite rear wall, has taken in the traditional double intermediate-shaft speed changing box rear-end of spindle in the Support Position of housing, therefore, the problem that the main shaft axially locating just becomes a key and needs to solve.
Summary of the invention
The utility model is for the deficiencies in the prior art, the technological scheme of the two jack shafts of a kind of main tank and odd-side planetary gear train transmission main shaft axial positioning structure is provided, can realize the bi-directional axial location of main shaft, the axial thrust load of gearshift axial force and helical teeth mainshaft gear can be born, and the spindle floating function in the traditional double countershaft gearbox can be realized.
The utility model is realized by following technical measures: the two jack shafts of a kind of main tank and odd-side planetary gear train transmission main shaft axial positioning structure, and bearing race is installed in front-end of spindle boring in the hole, and end journal stretches in the bearing race before the input shaft; Anti-wearing liner is installed in the bearing race, leaves the gap between end journal and the lining before the input shaft, realize spindle floating; Two high thrust bearings are installed between input shaft and bearing race, and two high thrust bearings lay respectively at the high driving gear both sides on the input shaft; Rear-end of spindle is installed the rear support positioning shaft, installs on the rear support positioning shaft and adjusts pad and low thrust bearing assembly, makes hole end surface applying in low thrust bearing assembly and the output shaft by adjusting pad, realizes axially locating; Be provided with oil leab on input shaft and the main shaft, lubricant oil enters oil leab by being installed on the Oil Guide ring in the input shaft end cap, and high thrust bearing, the low thrust bearing assembly of both sides before and after the main shaft carried out pressure lubrication.
The beneficial effects of the utility model are: the utility model is reasonable in design, both can realize the bi-directional axial location of main shaft, can bear again the axial thrust load of gearshift axial force and helical teeth mainshaft gear, and can realize the spindle floating function in the traditional double countershaft gearbox.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Among the figure, 1, input shaft; 2, main shaft; 3, output shaft; 4, low thrust bearing assembly; 5, adjust pad; 6, rear support positioning shaft; 7, bearing race, 8, high thrust bearing; 9, high thrust bearing; 10, underneath drive gear; 11, Oil Guide ring; 12, oil leab; 13, high driving gear.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by an embodiment, this programme is set forth.
Such as accompanying drawing, the two jack shafts of a kind of main tank and odd-side planetary gear train transmission main shaft axial positioning structure, bearing race 7 is installed in the boring of main shaft 2 front ends in the hole, and input shaft 1 front end journal stretches in the bearing race 7; In the bearing race 7 anti-wearing liner is installed, leaves the gap between input shaft 1 front end journal and the lining, realize spindle floating; 7 of input shaft 1 and bearing races are installed two high thrust bearings 8,9, two high thrust bearings 8,9 high driving gear 13 both sides that lay respectively on the input shaft 1, before high driving gear 13 underneath drive gear 10 are installed also on the input shaft; Rear support positioning shaft 6 is installed in main shaft 2 rear ends, installs on the rear support positioning shaft 6 and adjusts pad 5 and low thrust bearing assembly 4, by adjusting pad 5 low thrust bearing assembly 4 and output shaft 3 interior hole end surfaces is fitted, and realizes axially locating; Be provided with oil leab 12 on input shaft 1 and the main shaft 2, lubricant oil enters oil leab 12 by being installed on the Oil Guide ring 11 in input shaft 1 end cap, and high thrust bearing 8,9, the low thrust bearing assembly 4 of both sides, main shaft 2 front and back carried out pressure lubrication.
The utility model can pass through or adopt existing techniques in realizing without the technical characteristics of describing; do not repeat them here; certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example; the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement also should belong to protection domain of the present utility model.
Claims (1)
1. the two jack shafts of a main tank and odd-side planetary gear train transmission main shaft axial positioning structure is characterized in that, front-end of spindle boring, and the installation bearing race hole in, the front end journal of input shaft stretches in the bearing race; Anti-wearing liner is installed in the bearing race, leaves the gap between end journal and the lining before the input shaft, realize spindle floating; Two high thrust bearings are installed between input shaft and bearing race, and two high thrust bearings lay respectively at the high driving gear both sides on the input shaft; Rear-end of spindle is installed the rear support positioning shaft, installs on the rear support positioning shaft and adjusts pad and low thrust bearing assembly, makes hole end surface applying in low thrust bearing assembly and the output shaft by adjusting pad, realizes axially locating; Be provided with oil leab on input shaft and the main shaft, lubricant oil enters oil leab by being installed on the Oil Guide ring in the input shaft end cap, and high thrust bearing, the low thrust bearing assembly of both sides before and after the main shaft carried out pressure lubrication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339450 CN202646622U (en) | 2012-07-13 | 2012-07-13 | Axial positioning structure for speed changing box main shaft of main box double-intermediate shaft and auxiliary box planetary gear train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339450 CN202646622U (en) | 2012-07-13 | 2012-07-13 | Axial positioning structure for speed changing box main shaft of main box double-intermediate shaft and auxiliary box planetary gear train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646622U true CN202646622U (en) | 2013-01-02 |
Family
ID=47415731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220339450 Expired - Lifetime CN202646622U (en) | 2012-07-13 | 2012-07-13 | Axial positioning structure for speed changing box main shaft of main box double-intermediate shaft and auxiliary box planetary gear train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748455A (en) * | 2012-07-13 | 2012-10-24 | 中国重汽集团济南动力有限公司 | Axial positioning structure for main shaft of speed changing box with double intermediate shafts of primary box and planet wheel system of secondary box |
-
2012
- 2012-07-13 CN CN 201220339450 patent/CN202646622U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748455A (en) * | 2012-07-13 | 2012-10-24 | 中国重汽集团济南动力有限公司 | Axial positioning structure for main shaft of speed changing box with double intermediate shafts of primary box and planet wheel system of secondary box |
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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 |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |