CN203926629U - A kind of mechanical changeover mechanism of vertical installation - Google Patents
A kind of mechanical changeover mechanism of vertical installation Download PDFInfo
- Publication number
- CN203926629U CN203926629U CN201420305616.5U CN201420305616U CN203926629U CN 203926629 U CN203926629 U CN 203926629U CN 201420305616 U CN201420305616 U CN 201420305616U CN 203926629 U CN203926629 U CN 203926629U
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- gear
- shaft
- thrust bearing
- needle roller
- roller thrust
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Abstract
A kind of mechanical changeover mechanism of vertical installation, it is mainly comprised of gear shaft, spacer shell, first gear, needle roller thrust bearing, toothholder, tooth cover, second gear, needle roller thrust bearing, described gear shaft is installed on mission case by the bearing at two ends, one spacer shell with the location shaft shoulder is installed on gear shaft, first gear is installed on spacer shell and leans against on the shaft shoulder of location, one tooth cover forms static connection by spline and gear shaft, downside end face is positioned on gear shaft, and tooth cover is connected with toothholder by spline; One needle roller thrust bearing is installed between first gear and toothholder; Second gear is arranged on gear shaft, and the lower end of this second gear is positioned on the shaft shoulder of gear shaft by needle roller thrust bearing; Between the location shaft shoulder of described first gear and spacer shell upper end, have and be necessarily beneficial to the gap that forms oil film, tooth cover also has and is beneficial to the gap that forms dynamic pressure oil film with second gear end face; Between each shift gear endoporus and axle, by the oil groove on axle, realize hydrodynamic lubrication; It has the advantages such as simple and reliable for structure, manoeuvrable, processing and simple installation.
Description
Technical field
The utility model relates to a kind of mechanical changeover mechanism of vertical installation.
Background technique
Machinery (synchronizer) gearshift being used in current most of speed changer (as automotive transmission), all that shifting shaft is the mechanical changeover of (horizontal) under horizontal installment state, gear shifting structure for vertical installation, Action of Gravity Field due to power shift gear and total, if adopt conventional gearshift, during gear idle running, frictional loss and wearing and tearing between locating face and the location shaft shoulder will be very serious, cause the consequences such as part rapid wear, motion inefficacy.Therefore need to be by improving gear shifting structure to meet usage requirement.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and a kind of reliable in structure is provided, the mechanism of vertical mechanical gearshift simple, that reliability is high is installed, and being applicable to speed changer is vertical installation and the workplace that needs to shut down gearshift.
The purpose of this utility model completes by following technical solution, described vertical mechanical gearshift, it is mainly by gear shaft, spacer shell, first gear, needle roller thrust bearing, toothholder, tooth cover, second gear, needle roller thrust bearing forms, described gear shaft is installed on mission case by the bearing at two ends, one spacer shell with the location shaft shoulder is installed on gear shaft, first gear is installed on spacer shell and leans against on the shaft shoulder of location, one tooth cover forms static connection by spline and gear shaft, downside end face is positioned on gear shaft, tooth cover is connected with toothholder by spline, one needle roller thrust bearing is installed between first gear and toothholder, second gear is arranged on gear shaft, and the lower end of this second gear is positioned on the shaft shoulder of gear shaft by needle roller thrust bearing.
Between the location shaft shoulder of described first gear and spacer shell upper end, have and be necessarily beneficial to the gap that forms oil film, tooth cover also has and is beneficial to the gap that forms dynamic pressure oil film with second gear end face; Between each shift gear endoporus and axle, by the oil groove on axle, realize hydrodynamic lubrication.
Gear shaft described in the utility model is vertical mounting structure, the parts such as gear are because the frictional force that Action of Gravity Field causes is larger, to depend merely on oil film action unreliable with shaft shoulder locating face, therefore on the basis of conventional structure, a needle roller thrust bearing has been installed between gear face and shaft shoulder locating face, can eliminate wearing and tearing and reduce resistance, can guarantee again the compactedness of original structure.Flexibility, working life and the mechanism reliability of total are all improved greatly.
The utility model is set up the use with end face needle roller thrust bearing by dynamic pressure oil film, has realized the vertical installation of gearshift; There is the advantages such as simple and reliable for structure, manoeuvrable, processing and simple installation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail: shown in Fig. 1, vertical mechanical gearshift described in the utility model, it is mainly by gear shaft 1, spacer shell 2, first gear 3, needle roller thrust bearing 4, toothholder 5, tooth cover 6, second gear 7, needle roller thrust bearing 8 compositions such as grade, described gear shaft 1 is installed on mission case by the bearing at two ends, one spacer shell 2 with the location shaft shoulder 9 is installed on gear shaft 1, first gear 3 is installed on spacer shell 2 and leans against on the shaft shoulder of location, one tooth cover 6 forms static connection by spline and gear shaft 1, downside end face is positioned on gear shaft 1, tooth cover 6 is connected with toothholder 5 by spline, one needle roller thrust bearing 4 is installed between first gear 3 and toothholder 5, second gear 7 is arranged on gear shaft 1, and the lower end of this second gear 7 is positioned on the shaft shoulder of gear shaft 1 by needle roller thrust bearing 8.
Between the location shaft shoulder 9 of described first gear 3 and spacer shell 2 upper ends, have and be necessarily beneficial to the gap that forms oil film, tooth cover 6 also has and is beneficial to the gap that forms dynamic pressure oil film with second gear 7 end faces; Between each shift gear endoporus and axle, by the oil groove on axle, realize hydrodynamic lubrication.
Embodiment: the utility model with 1/2 gear as an example, by that analogy the utility model is described in detail: as shown in Figure 1, this vertical mechanical gearshift is mainly comprised of gear shaft 1, spacer shell 2, first gear 3, needle roller thrust bearing 4, toothholder 5, tooth cover 6, second gear 7, needle roller thrust bearing 8 etc.Described gear shaft 1 is installed on mission case by the bearing at two ends, spacer shell 2 is installed on gear shaft 1, first gear 3 is installed on spacer shell 2, and between the location shaft shoulder of spacer shell 2 upper ends, there is certain interval (be beneficial to and form oil film), tooth cover 6 forms static connection by spline and gear shaft 1, downside end face is positioned on gear shaft 1 (gapped with second gear 3 end faces, also be to be beneficial to form dynamic pressure oil film), tooth cover 6 is connected with toothholder 5 by spline, needle roller thrust bearing 4 is installed between first gear 3 and toothholder 5, second gear 7 is arranged on gear shaft 1, by needle roller thrust bearing 8, be positioned on the shaft shoulder.Generally speaking, each shift gear upper end and the shaft shoulder etc. ensure certain gap, and lower end is supported on the shaft shoulder by needle roller thrust bearing, between each shift gear endoporus and axle, by the oil groove on axle, realizes hydrodynamic lubrication.
Shift gear upper-end surface is equipped with uniform oil groove, by dynamic pressure oil film effect realize shift gear 3, with axle (shift gear idle running) lubricated while having relative movement, reduce and rub.The rolling friction of gear and the shaft shoulder is realized in lower end by needle roller thrust bearing 4,8, greatly reduced frictional loss and avoided part premature wear, guarantees compactedness and the reliability of structure.
Claims (2)
1. a vertical mechanical gearshift, it is mainly by gear shaft (1), spacer shell (2), first gear (3), needle roller thrust bearing (4), toothholder (5), tooth cover (6), second gear (7), needle roller thrust bearing (8) forms, it is characterized in that described gear shaft (1) is installed on mission case by the bearing at two ends, one spacer shell (2) with the location shaft shoulder (9) is installed on gear shaft (1), first gear (3) is installed on spacer shell (2) and goes up and lean against on the location shaft shoulder (9), one tooth cover (6) forms static connection by spline and gear shaft (1), downside end face is positioned on gear shaft (1), tooth cover (6) is connected with toothholder (5) by spline, one needle roller thrust bearing (4) is installed between first gear (3) and toothholder (5), it is upper that second gear (7) is arranged on gear shaft (1), and the lower end of this second gear (7) is positioned on the shaft shoulder (10) of gear shaft (1) by needle roller thrust bearing (8).
2. vertical mechanical gearshift according to claim 1, it is characterized in that having and being necessarily beneficial to the gap that forms oil film between described first gear (3) and the location shaft shoulder (9) of spacer shell (2) upper end, tooth cover (6) also has and is beneficial to the gap that forms dynamic pressure oil film with second gear (7) end face; Between each shift gear endoporus and axle, by the oil groove on axle, realize hydrodynamic lubrication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420305616.5U CN203926629U (en) | 2014-06-10 | 2014-06-10 | A kind of mechanical changeover mechanism of vertical installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420305616.5U CN203926629U (en) | 2014-06-10 | 2014-06-10 | A kind of mechanical changeover mechanism of vertical installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926629U true CN203926629U (en) | 2014-11-05 |
Family
ID=51822442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420305616.5U Active CN203926629U (en) | 2014-06-10 | 2014-06-10 | A kind of mechanical changeover mechanism of vertical installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926629U (en) |
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2014
- 2014-06-10 CN CN201420305616.5U patent/CN203926629U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |