CN203717889U - Manual mechanical shifting mechanism - Google Patents
Manual mechanical shifting mechanism Download PDFInfo
- Publication number
- CN203717889U CN203717889U CN201420029651.9U CN201420029651U CN203717889U CN 203717889 U CN203717889 U CN 203717889U CN 201420029651 U CN201420029651 U CN 201420029651U CN 203717889 U CN203717889 U CN 203717889U
- Authority
- CN
- China
- Prior art keywords
- shift
- gear
- gearshift
- tooth cover
- fork
- 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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- 230000033001 locomotion Effects 0.000 claims abstract description 15
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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- Gear-Shifting Mechanisms (AREA)
Abstract
A manual mechanical shifting mechanism is mainly composed of a fork shaft connected with a shift lever at one end, ball bearings, a fork, a flat key, a shift block, a gear sleeve, a gear holder, a left shift gear and a right shift gear; the fork shaft is fixed onto a box through the ball bearings at both ends and can rotate, and the fork with the shift block is fixed onto the fork shaft through the flat key; the shift block contacts with the side surface of a ring groove on the outer ring of the gear sleeve arranged on the gear holder and can push the gear sleeve to perform axial linear motion, and the gear sleeve in the axial linear motion is respectively combined with splines of the left shift gear or the right shift which are arranged on both sides of the gear holder. The manual mechanical shifting mechanism has the advantages of simple structure, easy operation, machining and mounting easiness, working reliability and the like.
Description
Technical field
The utility model relates to a kind of armstrong's patent gearshift that is mainly used in medium-and-large-sized armstrong's patent shifting-fork gear-shifting gear-box, belong to mechanical changeover technical field.
Background technique
The mechanical changeover mechanism being used in current most of speed changer (as automotive transmission), all adopt the linear reciprocating motion of declutch shift shaft to realize shift fork mechanical changeover, for medium-and-large-sized gear-box, because shifting fork mechanism weight is larger, frictional force is also larger, as still adopted the straight line motion of declutch shift shaft, very large power need to be applied and gearshift could be realized, operation is difficult for; Therefore existing this gear shifting structure is not suitable for the manual shift of medium-and-large-sized shift fork.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and the armstrong's patent gearshift that a kind of operation is light, simple in structure, reliable, be applicable to medium-and-large-sized shift fork is provided.
The purpose of this utility model completes by following technical solution, described armstrong's patent gearshift, declutch shift shaft, ball bearing, shift fork, flat key, gearshift shifting block, tooth cover, toothholder, left power shift gear, right power shift gear that it is mainly connected with shift handle by an end form; Described declutch shift shaft is fixed on casing and rotatable motion by the ball bearing at two ends, on declutch shift shaft, is fixed with a shift fork with gearshift shifting block by flat key; Described gearshift shifting block also can promote tooth interplanting axial linear movement with the annular groove contacts side surfaces being placed in the outer gear ring above toothholder, and described tooth is enclosed within while making axial linear movement, the spline on the left power shift gear or the right power shift gear that are arranged in toothholder both sides is combined respectively.
Two fork end of described shift fork arrange respectively mounting hole, and in described mounting hole, are fixed with described gearshift shifting block by Spielpassung, and the shifting block that makes to shift gears is free to rotate; Described gearshift shifting block side is that face contacts with outer gear ring annular groove side all the time.
On circumference between described tooth cover and toothholder, be evenly equipped with at least three synchronous pushing block, pushing block outer spring and pushing block inner springs that play location and the effect of fixing tooth cover.
When gearshift, shift handle is clockwise or be rotated counterclockwise the rotation of drive declutch shift shaft, and declutch shift shaft drives shift fork to rotate, and the gearshift shifting block drive tooth being arranged on shift fork overlaps moving linearly to the left or to the right, and realization is shifted gears.Declutch shift shaft adopts bearing supporting, and in rotary course, frictional force is negligible; The joint spline front end of each power shift gear adopts wedge angle or rounding technique, makes tooth cover can be more conducive to hang up gear; For larger shifting fork mechanism, if adopt declutch shift shaft linear reciprocating motion, need higher accuracy of manufacturing, and due to the factor such as frictional force, machining error, be difficult to realize gear shift operation.
The utility model is specifically designed to frequent and must shuts down the workplace of shifting gears; by declutch shift shaft in gear-box shifting fork mechanism the drive shift fork that rotatablely moves---tooth cover is realized the mechanical changeover between each gear; it have simple in structure, operate light, processing and install simple, the features such as reliable operation.
Brief description of the drawings
Fig. 1 is the structural representation of the gearshift toggle mechanism of armstrong's patent gearshift described in the utility model.
Fig. 2 is the structural representation of the gear gearshift of armstrong's patent gearshift described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail: shown in Fig. 1,2, a kind of armstrong's patent gearshift described in the utility model is combined up and down by the mechanism shown in Fig. 1 and Fig. 2, actual composite structure: mechanism shown in Fig. 1 is placed on shown in Fig. 2 above structure at 90-degree rotation.
Declutch shift shaft 3, ball bearing 2, shift fork 4, flat key 5, gearshift shifting block 6, tooth cover 7, toothholder 8, left power shift gear 9, right power shift gear 10 that described armstrong's patent gearshift is mainly connected with shift handle 1 by an end form;
Declutch shift shaft 3 shown in Fig. 1 is fixed on casing and rotatable motion by the ball bearing 2 at two ends, on declutch shift shaft 3, is fixed with a shift fork 4 with gearshift shifting block 6 by flat key 5; Described gearshift shifting block 6 be placed in toothholder 8 tooth above and overlap the annular groove contacts side surfaces on 7 outer rings and can promote tooth cover 7 and make axial linear movement, and described tooth cover 7 is in the time making axial linear movement, spline on the left power shift gear 9 or the right power shift gear 10 that are arranged in toothholder 8 both sides is combined respectively, as shown in Figure 2.
Two fork end of described shift fork 4 arrange respectively mounting hole, and in described mounting hole, are fixed with described gearshift shifting block 6 by Spielpassung, and the shifting block 6 that makes to shift gears is free to rotate; It is that face contacts all the time that 7 annular groove sides, outer ring are overlapped with tooth in described gearshift shifting block 6 sides; On circumference between described tooth cover 7 and toothholder 8, be evenly equipped with three synchronous pushing block 11, pushing block outer spring 12 and pushing block inner springs 13 that play location and 7 effects of fixing tooth cover.
Embodiment:
As shown in Figure 1, declutch shift shaft 3 described in the utility model is fixed on casing by the ball bearing 2 at two ends, and shift fork 4 is fixed on declutch shift shaft 3 by flat key 5.In shift process, drive declutch shift shaft 3 to do counterclockwise or clockwise rotatablely moving by shift handle 1, declutch shift shaft 3 drives shift fork 4 together to rotate by flat key 5, the gearshift shifting block 6 being arranged on shift fork 4 overlaps 7 moving linearlies with the annular groove contacts side surfaces promotion tooth that tooth overlaps on 7 outer rings, with the spline fitted on left power shift gear 9 or right power shift gear 10.In the time that tooth overlaps 7 end faces and gear face and is close to, gearshift puts in place, fixes by the locking bolt on handle and casing, prevents gear or off-gear.
Due to the arm of force, shift handle length is longer, and steering force is less, even if therefore shifting fork mechanism is huge again, also can easily realize gear shift operation.
The mounting hole of gearshift shifting block 6 and shift fork 4 is Spielpassung, shifting block 6 is free to rotate, in the process of rotating at shift fork, it is that face contacts all the time that 7 annular groove sides, outer ring are overlapped with tooth in gearshift shifting block 6 sides, can ensure that shifting block 6 is transmitted to the active force of tooth cover 7 parallel with axis all the time, make tooth cover 7 can do reposefully straight reciprocating motion; Because the spline fitted of tooth cover 7 and toothholder 8 has sideshake, in gear-box running (particularly neutral) process, easily produce the unbalance vibration of tooth cover 7 simultaneously.Thereby on the circumference between tooth cover 7 and toothholder 8 uniform three synchronous pushing blocks 11, pushing block outer spring 12 and pushing block inner springs 13, play location and fixing tooth and overlap 7 and act on, prevent the noise because of generation of vibration.
Claims (3)
1. an armstrong's patent gearshift, declutch shift shaft, ball bearing, shift fork, flat key, gearshift shifting block, tooth cover, toothholder, left power shift gear, right power shift gear that it is mainly connected with shift handle by an end form; It is characterized in that described declutch shift shaft (3) is fixed on casing and rotatable motion by the ball bearing (2) at two ends, declutch shift shaft (3) is upper is fixed with a shift fork (4) with gearshift shifting block (6) by flat key (5); Described gearshift shifting block (6) is made axial linear movement with being placed in annular groove contacts side surfaces on toothholder (8) tooth cover (7) outer ring above and can promoting tooth cover (7), and described tooth cover (7) is in the time making axial linear movement, and the spline on the left power shift gear (9) or the right power shift gear (10) that are arranged in toothholder (8) both sides is combined respectively.
2. armstrong's patent gearshift according to claim 1, two fork end that it is characterized in that described shift fork (4) arrange respectively mounting hole, and in described mounting hole, being fixed with described gearshift shifting block (6) by Spielpassung, the shifting block (6) that makes to shift gears is free to rotate; Described gearshift shifting block (6) side is that face contacts with annular groove side, tooth cover (7) outer ring all the time.
3. armstrong's patent gearshift according to claim 1 and 2, is characterized in that being evenly equipped with on the circumference between described tooth cover (7) and toothholder (8) three and plays synchronous pushing block (11), pushing block outer spring (12) and the pushing block inner springs (13) that location and fixing tooth cover (7) act on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420029651.9U CN203717889U (en) | 2014-01-17 | 2014-01-17 | Manual mechanical shifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420029651.9U CN203717889U (en) | 2014-01-17 | 2014-01-17 | Manual mechanical shifting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717889U true CN203717889U (en) | 2014-07-16 |
Family
ID=51157042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420029651.9U Expired - Lifetime CN203717889U (en) | 2014-01-17 | 2014-01-17 | Manual mechanical shifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717889U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499806A (en) * | 2016-12-26 | 2017-03-15 | 雷沃重工股份有限公司 | Used with tractor lock unit shift fork shifter |
| CN112096798A (en) * | 2020-07-22 | 2020-12-18 | 重庆工程职业技术学院 | Track slab adjusting transmission case |
| CN113669447A (en) * | 2021-07-14 | 2021-11-19 | 中国十七冶集团有限公司 | Safety device for gear protection |
| CN115163645A (en) * | 2022-07-26 | 2022-10-11 | 山东华鲁制药有限公司 | Shifting fork shaft simple and convenient to install and high in bearing load and method |
-
2014
- 2014-01-17 CN CN201420029651.9U patent/CN203717889U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499806A (en) * | 2016-12-26 | 2017-03-15 | 雷沃重工股份有限公司 | Used with tractor lock unit shift fork shifter |
| CN112096798A (en) * | 2020-07-22 | 2020-12-18 | 重庆工程职业技术学院 | Track slab adjusting transmission case |
| CN113669447A (en) * | 2021-07-14 | 2021-11-19 | 中国十七冶集团有限公司 | Safety device for gear protection |
| CN115163645A (en) * | 2022-07-26 | 2022-10-11 | 山东华鲁制药有限公司 | Shifting fork shaft simple and convenient to install and high in bearing load and method |
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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: 20140716 |