CN102748455A - Axial positioning structure for main shaft of speed changing box with double intermediate shafts of primary box and planet wheel system of secondary box - Google Patents
Axial positioning structure for main shaft of speed changing box with double intermediate shafts of primary box and planet wheel system of secondary box Download PDFInfo
- Publication number
- CN102748455A CN102748455A CN2012102424911A CN201210242491A CN102748455A CN 102748455 A CN102748455 A CN 102748455A CN 2012102424911 A CN2012102424911 A CN 2012102424911A CN 201210242491 A CN201210242491 A CN 201210242491A CN 102748455 A CN102748455 A CN 102748455A
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- shaft
- main shaft
- box
- input shaft
- thrust bearing
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Abstract
The invention provides an axial positioning structure for a main shaft of a speed changing box with double intermediate shafts of a primary box and a planet wheel system of a secondary box. A hole is drilled at the front end of the main shaft, and a bearing seat ring is mounted in the hole; the shaft neck of the front end of an input shaft stretches into the bearing seat ring; the bearing seat ring is internally provided with a wear-resisting liner; a gap is reserved between the shaft neck of the front end of the input shaft and the liner to realize the floating of the main shaft; two large-thrust bearings are mounted between the input shaft and the bearing seat ring and are respectively located on the two sides of a high-transmission gear of the input shaft; the rear end of the main shaft is provided with a rear supporting positioning shaft; the rear supporting positioning shaft is provided with an adjusting gasket and a small-thrust bearing assembly; and the small-thrust bearing assembly and the end face of an inner hole of an output shaft are fit through the small-thrust bearing assembly so as to realize the axial positioning. The axial positioning structure disclosed by the invention has the beneficial effects that the design is reasonable; the bidirectional axial positioning of the main shaft can be realized, and a gear-shifting axial force and an axial component force of an oblique-tooth main shaft gear can be borne; and the floating function of the main shaft in the conventional speed changing box with double secondary shafts can be realized.
Description
Technical field
The present invention is 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 two jack shafts of main tank and odd-side planetary gear train is a kind of perfect scheme, and the two jack shafts of main tank are simple in structure, and bearing capacity is strong; Odd-side planetary gear train compact structure, transmitting torque is big.Dual-gripper before and after the planetary gear train structure has effectively guaranteed the support stiffness of output shaft, has got rid of the influence of car load factor to gearbox inside proper functioning, obviously improves the working life of odd-side.
Dual-support structure before and after the odd-side planetary gear train adopts supports before it and is positioned at the mesochite rear wall, has taken in the traditional double jack shaft gearbox rear-end of spindle in the Support Position of housing, therefore, and the problem of main shaft axially locating with regard to becoming a key and needing to solve.
Summary of the invention
The present invention is directed to the deficiency of existing technology; The technological scheme of 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 main shaft float function in the traditional double countershaft gearbox can be realized.
The present invention realizes through following technical measures: 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 that main shaft floats; 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 back and is supported positioning shaft, and the back is supported adjustment pad and low thrust bearing assembly are installed on the positioning shaft, makes hole end surface applying in low thrust bearing assembly and the output shaft, realization axially locating through the adjustment pad; Input shaft and main shaft are provided with oil leab, and lubricant oil gets into oil leab through 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.
Beneficial effect of the present invention is: the present invention is reasonable in design, both can realize the bi-directional axial location of main shaft, can bear the axial thrust load of gearshift axial force and helical teeth mainshaft gear again, and can realize the main shaft float function in the traditional double countershaft gearbox.
Description of drawings
Fig. 1 is the structural representation of the specific embodiment of the invention.
Among the figure, 1, input shaft; 2, main shaft; 3, output shaft; 4, low thrust bearing assembly; 5, adjustment pad; 6, positioning shaft is supported in the back; 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, through an embodiment, this programme is set forth below.
Like accompanying drawing, 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 end journal stretches in the bearing race 7 before the input shaft 1; In the bearing race 7 anti-wearing liner is installed, leaves the gap between end journal and the lining before the input shaft 1, realize that main shaft floats; 7 of input shaft 1 and bearing races are installed 8,9, two high thrust bearings 8,9 of two high thrust bearings and are laid respectively at high driving gear 13 both sides on the input shaft 1, and underneath drive gear 10 also is installed before high driving gear on the input shaft; Support positioning shaft 6 after install main shaft 2 rear ends, install on the back support positioning shaft 6 and adjust pad 5 and low thrust bearing assembly 4, make hole end surface applying in low thrust bearing assembly 4 and the output shaft 3, realize axially locating through adjustment pad 5; Input shaft 1 is provided with oil leab 12 with main shaft 2, and lubricant oil gets into oil leab 12 through 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 present invention can pass through or adopt existing techniques in realizing without the technical characteristics of describing; Repeat no more at this; Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited in above-mentioned giving an example; Variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (1)
1. 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 preceding 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 that main shaft floats; 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 back and is supported positioning shaft, and the back is supported adjustment pad and low thrust bearing assembly are installed on the positioning shaft, makes hole end surface applying in low thrust bearing assembly and the output shaft, realization axially locating through the adjustment pad; Input shaft and main shaft are provided with oil leab, and lubricant oil gets into oil leab through 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 |
|---|---|---|---|
| CN2012102424911A CN102748455A (en) | 2012-07-13 | 2012-07-13 | Axial positioning structure for main shaft of speed changing box with double intermediate shafts of primary box and planet wheel system of secondary box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102424911A CN102748455A (en) | 2012-07-13 | 2012-07-13 | Axial positioning structure for main shaft of speed changing box with double intermediate shafts of primary box and planet wheel system of secondary box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102748455A true CN102748455A (en) | 2012-10-24 |
Family
ID=47028863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102424911A Pending CN102748455A (en) | 2012-07-13 | 2012-07-13 | Axial positioning structure for main shaft of speed changing box with double intermediate shafts of primary box and planet wheel system of secondary box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102748455A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111390209A (en) * | 2020-04-30 | 2020-07-10 | 广西玉柴机器股份有限公司 | Cylinder body main shaft hole boring rod for machining center |
| CN113374858A (en) * | 2021-07-15 | 2021-09-10 | 中信重工机械股份有限公司 | Gear pair for grinding machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546823A (en) * | 1993-05-20 | 1996-08-20 | Eaton Corporation | High-capacity compound transmission |
| EP1310693A1 (en) * | 2001-11-09 | 2003-05-14 | Renault s.a.s. | Synchronising device for a gear box |
| CN2746205Y (en) * | 2004-10-08 | 2005-12-14 | 杭州前进齿轮箱集团有限公司 | Vehicle mechanical speed transforming transmission |
| CN201074658Y (en) * | 2007-09-18 | 2008-06-18 | 中国重汽集团济南技术中心有限公司 | Gearbox |
| CN201475263U (en) * | 2009-09-01 | 2010-05-19 | 中国重汽集团济南动力有限公司 | Novel transmission gear of heavy truck |
| CN201747872U (en) * | 2010-06-02 | 2011-02-16 | 中国重汽集团济南动力有限公司 | Transmission case main shaft gear positioning mechanism of heavy-duty truck |
| CN102330803A (en) * | 2011-10-15 | 2012-01-25 | 中国重汽集团济南动力有限公司 | 16-shift double-countershaft speed changing box |
| CN102401093A (en) * | 2011-11-11 | 2012-04-04 | 中国重汽集团济南动力有限公司 | Dual-intermediate-shaft gearbox |
| CN202646622U (en) * | 2012-07-13 | 2013-01-02 | 中国重汽集团济南动力有限公司 | Axial positioning structure for speed changing box main shaft of main box double-intermediate shaft and auxiliary box planetary gear train |
-
2012
- 2012-07-13 CN CN2012102424911A patent/CN102748455A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546823A (en) * | 1993-05-20 | 1996-08-20 | Eaton Corporation | High-capacity compound transmission |
| EP1310693A1 (en) * | 2001-11-09 | 2003-05-14 | Renault s.a.s. | Synchronising device for a gear box |
| CN2746205Y (en) * | 2004-10-08 | 2005-12-14 | 杭州前进齿轮箱集团有限公司 | Vehicle mechanical speed transforming transmission |
| CN201074658Y (en) * | 2007-09-18 | 2008-06-18 | 中国重汽集团济南技术中心有限公司 | Gearbox |
| CN201475263U (en) * | 2009-09-01 | 2010-05-19 | 中国重汽集团济南动力有限公司 | Novel transmission gear of heavy truck |
| CN201747872U (en) * | 2010-06-02 | 2011-02-16 | 中国重汽集团济南动力有限公司 | Transmission case main shaft gear positioning mechanism of heavy-duty truck |
| CN102330803A (en) * | 2011-10-15 | 2012-01-25 | 中国重汽集团济南动力有限公司 | 16-shift double-countershaft speed changing box |
| CN102401093A (en) * | 2011-11-11 | 2012-04-04 | 中国重汽集团济南动力有限公司 | Dual-intermediate-shaft gearbox |
| CN202646622U (en) * | 2012-07-13 | 2013-01-02 | 中国重汽集团济南动力有限公司 | Axial positioning structure for speed changing box main shaft of main box double-intermediate shaft and auxiliary box planetary gear train |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111390209A (en) * | 2020-04-30 | 2020-07-10 | 广西玉柴机器股份有限公司 | Cylinder body main shaft hole boring rod for machining center |
| CN113374858A (en) * | 2021-07-15 | 2021-09-10 | 中信重工机械股份有限公司 | Gear pair for grinding machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121024 |