CN202100667U - Gearbox - Google Patents
Gearbox Download PDFInfo
- Publication number
- CN202100667U CN202100667U CN2011202095385U CN201120209538U CN202100667U CN 202100667 U CN202100667 U CN 202100667U CN 2011202095385 U CN2011202095385 U CN 2011202095385U CN 201120209538 U CN201120209538 U CN 201120209538U CN 202100667 U CN202100667 U CN 202100667U
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- CN
- China
- Prior art keywords
- gear
- shaft
- feather key
- duplicate
- shift
- 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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Abstract
The utility model relates to a gearbox which adopts the structural scheme that a bevel gear shaft is arranged at the upper end of a box body and vertically inserted into the box body, a driving pulley is mounted at the upper end of the bevel gear shaft, a bevel gear connected to the lower end of the bevel gear shaft is meshed with an input bevel gear, the input bevel gear is mounted at one end of an input shaft, an input gear is arranged at the other end of the input shaft, the input gear is meshed with duplicate gear sets, the duplicate gear sets are respectively sleeved on an output shaft and a feather key shaft through bearings and finally meshed with an output gear, and the output gear is fixed to the feather key shaft; a shift gear set which uses a feather key to shift gear is mounted on the feather key shaft, the shift gear set is meshed with a speed transforming gear set, and the speed transforming gear set is supported on the output shaft through a bearing; and the end face of the speed transforming gear set is combined with a clutch, and a clutch spline is arranged in an inner hole of the clutch and fixed to the output shaft through a transmission pin. The gearbox has a large transmission ratio, can be matched with all-purpose gasoline engines, and greatly reduces the manufacturing cost of lawn mowers.
Description
Technical field
The utility model relates to a kind of speed changer, belongs to the varying-speed machinery technical field.
Background technique
From walking the high low speed double output shaft of the common supporting special use of the long lifetime speed changer motor that the lawn machine is used, pass to gearbox with the low speed output shaft in the market, the velocity ratio of this gearbox is less, and input speed is merely about 320rpm, belongs to slow-speed of revolution gearbox.Because it can only join special engine, can not be equipped with general gasoline engines commonly used, its application prospect is limited.
The model utility content
The purpose of the utility model is, overcomes the problem that exists in the existing technology, and a kind of speed changer of high transmission ratio is provided, and can be equipped with general gasoline engines.
For solving above technical problem, a kind of speed changer that the utility model provided comprises casing; Said casing upper end is provided with the angular wheel shaft in the vertical insertion casing; The upper end of said angular wheel shaft is equipped with driving pulley, and the umbrella gear that is connected said angular wheel shaft lower end is meshed with input bevel gear, and said input bevel gear is installed on an end of input shaft; The other end of said input shaft is provided with the input gear; Said input gear is meshed with the duplicate gear group, and said duplicate gear group is set on output shaft and the sliding key shaft and final and output gear engagement through bearing, and said output gear is fixed on the said sliding key shaft; The shift gear group of being shifted gears by feather key also is installed on the said sliding key shaft, and said shift gear group is meshed with the speed change gear group, and said speed change gear group is passed through bearings on said output shaft; The end face of said speed change gear group combines with clutch, is provided with the clutch spline in the endoporus of said clutch, and said clutch spline is fixed on the output shaft through driving pin.
With respect to existing technology, the utility model has been obtained following beneficial effect: the rotation of driving pulley drives angular wheel shaft and rotates, and angular wheel shaft drives input bevel gear and input shaft rotates, and the input gear on the input shaft rotates synchronously; Input gear drive duplicate gear group is rotated and behind duplicate gear group reduction of speed, is driven output gear and rotate; Output gear drives sliding key shaft and rotates, and the feather key head is wedged in some shift gears, and this shift gear will drive corresponding speed change gear and rotate; When clutch is in jointing state, speed change gear will drive clutch and output shaft rotates.This speed changer adopts full-depth tooth wheel speed change; Transmitted power is big; Reliable transmission and velocity ratio are big, and input speed can reach the high rotating speed about 3200rpm, and driving pulley can be through belt and general gasoline engines coupling; Can save the expense of buying expensive proprietary motor, reduce the manufacture cost of lawn machine greatly; Simultaneously, this speed changer structure is compact, boundary dimension is little, gear shift is convenient, is easy to make.
Preferred version as the utility model; Said duplicate gear group comprises first duplicate gear, second duplicate gear and the 3rd duplicate gear; On said output shaft, said second duplicate gear passes through Bearing Installation on said sliding key shaft through Bearing Installation for said first duplicate gear and the 3rd duplicate gear; The gearwheel of said first duplicate gear and said input gear engagement; The gearwheel engagement of the small gear of said first duplicate gear and said second duplicate gear; The gearwheel engagement of the small gear of said second duplicate gear and said the 3rd duplicate gear, the small gear of said the 3rd duplicate gear and the engagement of said output gear.Through the continuous engagement of the big small gear of duplicate gear, big reduction of speed ratio and reliable transmission have been realized.
As the preferred version of the utility model, said shift gear group comprises a plurality of shift gears with different drive ratios, is respectively equipped with the shift gear pad between each shift gear; Said speed change gear group comprises a plurality of speed change gears of corresponding engagement with shift gear respectively, in the endoporus of said speed change gear group spline housing is installed, and the spline housing bearing is housed in the endoporus of said spline housing and passes through the spline housing bearings on said output shaft.
As the further preferred version of the utility model; The endoporus of each shift gear is respectively equipped with the shift gear keyway in the said shift gear group; Said sliding key shaft is provided with featherway, and said feather key is arranged in featherway and can slides vertically at featherway, and the afterbody of said feather key is provided with and drives the feather key draw ring that feather key moves; The head of said feather key is wedged in the said shift gear keyway; Said feather key is the rigid beam structure, and the afterbody upper end of said feather key is provided with groove, is embedded with feather key elastic wire back-up ring in the said groove feather key afterbody is fixed on the said feather key draw ring; The bottom of said feather key is provided with as the circular arc of lower fulcrum protruding, and said circular arc convexity is between feather key head and said groove and near said groove.During gearshift, spur the feather key draw ring to the left, the feather key draw ring drives feather key and is moved to the left; The shift gear pad presses down the feather key head, and feather key is the center with self lower fulcrum, and the elastic force that overcomes the elastic wire back-up ring rotates counterclockwise; Make feather key separate the position that the back arrives second shift gear with first shift gear, feather key elastic wire back-up ring is depressed the afterbody of feather key, and feather key is that the center clockwise rotates with self lower fulcrum; Lift on the feather key head with second shift gear and engage, realized feather key gearshift function; The feather key head relies on the elastic force of elastic wire back-up ring to realize and the separating or engages of shift gear that the feather key of rigid beam structure does not need itself resiliently deformable, and intensity is high, is not easy to rupture good reliability.
Description of drawings
Fig. 1 is the structural representation of the utility model speed changer.
Fig. 2 is the schematic perspective view of feather key gear in the utility model speed changer.
Fig. 3 is the structural drawing of feather key elastic wire back-up ring.
Among the figure: 1 casing; 2 angular wheel shafts; The 2a deep groove ball bearing; The single-row needle bearing of 2b; The 2c thrust-bearing; 2d inner frame two-lip seal; 3 driving pulleys; 3a elastic cylinder backing pin; 4 input shafts; The 4a bearing of input shaft; 4b imports axle sleeve; 5 input bevel gears; 6 input gears; The 6a flat key; 7 output shafts; The 7a output shaft bearing; The 7b position limit pin; 7c position limit pin interstage sleeve; The 7d split washer; 7e output shaft pad; 7f inner frame two-lip seal; 8 first duplicate gears; The 8a needle bearing; 9 second duplicate gears; The 9a deep groove ball bearing; The 9b circlip for hole; 10 the 3rd duplicate gears; The 10a needle bearing; 11 output gears; 12 sliding key shafts; 12a sliding key shaft bearing; 12b sliding key shaft spacer; The 12c circlip for shaft; The 12d feather key; 12e feather key draw ring; 12f feather key elastic wire back-up ring; 13a first shift gear; 13b second shift gear; 13c the 3rd shift gear; 14 shift gear pads; The 15a first stud gear; The 15b second stud gear; 15c the 3rd speed change gear; The 15d spline housing; 15e spline housing bearing; 15f speed change gear back-up ring; 16 clutches; 16a clutch spline; The 16b driving pin.
Embodiment
As shown in Figure 1; The speed changer of the utility model comprises casing 1, and casing 1 upper end is provided with the angular wheel shaft 2 in the vertical insertion casing; The upper end of angular wheel shaft 2 is equipped with driving pulley 3; Elastic cylinder backing pin 3a is fixed on driving pulley 3 on the angular wheel shaft 2, and angular wheel shaft 2 is supported on the casing through deep groove ball bearing 2a, single-row needle bearing 2b and thrust-bearing 2c, and realizes sealing through inner frame two-lip seal 2d.The umbrella gear that is connected angular wheel shaft 2 lower ends is meshed with input bevel gear 5, and input bevel gear 5 is installed on an end of input shaft 4, and the other end of input shaft 4 is equipped with input gear 6 through flat key 6a, and input gear 6 is meshed with the duplicate gear group.Input shaft 4 two ends are supported on the casing 1 through bearing of input shaft 4a, pass through input axle sleeve 4b axially locating between input bevel gear 5 and the input gear 6.
The duplicate gear group comprises first duplicate gear 8, second duplicate gear 9 and the 3rd duplicate gear 10.First duplicate gear 8 is installed on the output shaft 7 through needle bearing 8a, and the 3rd duplicate gear 10 is installed on the output shaft 7 through needle bearing 10a.First duplicate gear 8 and the 3rd duplicate gear 10 pass on left position limit pin 7b and position limit pin interstage sleeve 7c axially locating, and the right side is through split washer 7d axially locating, and split washer 7d right side is equipped with output shaft pad 7e; The two ends of output shaft 7 are supported on the casing through output shaft bearing 7a, and sealing is realized through inner frame two-lip seal 7f respectively in the position that passes casing.
Circlip for hole 9b is installed in the endoporus of second duplicate gear 9, and deep groove ball bearing 9a is installed in the both sides of circlip for hole 9b and is supported on the sliding key shaft 12.Output gear 11 is positioned at the right side of second duplicate gear 9 and is fixed on the sliding key shaft 12.
The gearwheel of first duplicate gear 8 and 6 engagements of input gear; The gearwheel engagement of the small gear of first duplicate gear 8 and second duplicate gear 9; The gearwheel engagement of the small gear of second duplicate gear 9 and the 3rd duplicate gear 10, the small gear of the 3rd duplicate gear 10 and output gear 11 engagements.Through the continuous engagement of the big small gear of duplicate gear, big reduction of speed ratio and reliable transmission have been realized.The axis of input shaft 4, output shaft 7 and sliding key shaft 12 is parallel to each other and perpendicular to the axis of angular wheel shaft 2.
The two ends of sliding key shaft 12 are supported on the casing 1 through sliding key shaft bearing 12a respectively, and sliding key shaft 12 is provided with sliding key shaft spacer 12b, circlip for shaft 12c with second duplicate gear 9 and output gear 11 axially locating.The shift gear group of being shifted gears by feather key also is installed on the sliding key shaft 12; The shift gear group comprises the first shift gear 13a, the second shift gear 13b and the 3rd shift gear 13c with different drive ratios, is respectively equipped with shift gear pad 14 between each shift gear.
The speed change gear group comprises respectively and first stud gear 15a, second stud gear 15b and the 3rd speed change gear 15c of the first shift gear 13a, the second shift gear 13b and the corresponding engagement of the 3rd shift gear 13c that the left side of the 3rd speed change gear 15c is equipped with speed change gear back-up ring 15f the speed change gear group is carried out axially locating.Spline housing 15d is installed in the endoporus of speed change gear group, spline housing bearing 15e is housed in the endoporus of spline housing 15d and is supported on the output shaft 7 through spline housing bearing 15e.Its right end face of speed change gear group combines with clutch 16; Be provided with clutch spline 16a in the endoporus of clutch 16; Clutch spline 16a is fixed on the output shaft 7 through driving pin 16b, and clutch 16 can move axially on clutch spline 16a to realize joint or to separate.
Like Fig. 2 and shown in Figure 3; The endoporus of each shift gear is respectively equipped with the shift gear keyway; Sliding key shaft 12 is provided with featherway, and feather key 12d is arranged in featherway and can slides vertically at featherway, and the afterbody of feather key 12d is provided with and drives the feather key draw ring 12e that feather key moves.Feather key 12d is the rigid beam structure; In the feather key head wedging shift gear keyway; The afterbody upper end of feather key is provided with groove, is embedded with feather key elastic wire back-up ring 12f in the groove feather key afterbody is fixed on the feather key draw ring 12e, and the bottom of feather key 12d is provided with as the circular arc of lower fulcrum protruding; The circular arc convexity is between feather key head and groove and near groove, and feather key elastic wire back-up ring 12f can make the feather key head produce swing by a relatively large margin with less action.
During work, the rotation of driving pulley 3 drives angular wheel shaft 2 and rotates, and angular wheel shaft 2 drives input bevel gear 5 and input shaft 4 rotates, and the input gear 6 on the input shaft 4 rotates synchronously; Input gear 6 drives the rotation of duplicate gear group and behind duplicate gear group reduction of speed, drives output gear 11 and rotate; Output gear 11 drives sliding key shaft 12 and rotates, and the feather key head is wedged in some shift gears, and this shift gear will drive corresponding speed change gear and rotate; When clutch 16 is in jointing state, speed change gear will drive clutch 16 and output shaft 7 rotates.
During gearshift, spur feather key draw ring 12e to the left, feather key draw ring 12e drives feather key 12d and is moved to the left; Shift gear pad 14 presses down the feather key head; Feather key 12d is a fulcrum with the circular arc convexity of self bottom, and the elastic force that overcomes the elastic wire back-up ring rotates counterclockwise, and makes feather key 12d separate the position that the back arrives the second shift gear 13b with the first shift gear 13a; Feather key elastic wire back-up ring is depressed the afterbody of feather key 12d; Feather key 12d is that fulcrum clockwise rotates with the circular arc convexity of self bottom, lifts on the feather key head with the second shift gear 13b to engage, and has realized feather key gearshift function.
Except that the foregoing description, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (4)
1. speed changer; Comprise casing, it is characterized in that: said casing upper end is provided with the angular wheel shaft in the vertical insertion casing, and the upper end of said angular wheel shaft is equipped with driving pulley; The umbrella gear that is connected said angular wheel shaft lower end is meshed with input bevel gear; Said input bevel gear is installed on an end of input shaft, and the other end of said input shaft is provided with the input gear, and said input gear is meshed with the duplicate gear group; Said duplicate gear group is set on output shaft and the sliding key shaft and final and output gear engagement through bearing, and said output gear is fixed on the said sliding key shaft; The shift gear group of being shifted gears by feather key also is installed on the said sliding key shaft, and said shift gear group is meshed with the speed change gear group, and said speed change gear group is passed through bearings on said output shaft; The end face of said speed change gear group combines with clutch, is provided with the clutch spline in the endoporus of said clutch, and said clutch spline is fixed on the output shaft through driving pin.
2. speed changer according to claim 1; It is characterized in that: said duplicate gear group comprises first duplicate gear, second duplicate gear and the 3rd duplicate gear; On said output shaft, said second duplicate gear passes through Bearing Installation on said sliding key shaft through Bearing Installation for said first duplicate gear and the 3rd duplicate gear; The gearwheel of said first duplicate gear and said input gear engagement; The gearwheel engagement of the small gear of said first duplicate gear and said second duplicate gear; The gearwheel engagement of the small gear of said second duplicate gear and said the 3rd duplicate gear, the small gear of said the 3rd duplicate gear and the engagement of said output gear.
3. speed changer according to claim 1 is characterized in that: said shift gear group comprises a plurality of shift gears with different drive ratios, is respectively equipped with the shift gear pad between each shift gear; Said speed change gear group comprises a plurality of speed change gears of corresponding engagement with shift gear respectively, in the endoporus of said speed change gear group spline housing is installed, and the spline housing bearing is housed in the endoporus of said spline housing and passes through the spline housing bearings on said output shaft.
4. according to each described speed changer in the claim 1 to 3; It is characterized in that: the endoporus of each shift gear is respectively equipped with the shift gear keyway in the said shift gear group; Said sliding key shaft is provided with featherway, and said feather key is arranged in featherway and can slides vertically at featherway, and the afterbody of said feather key is provided with and drives the feather key draw ring that feather key moves; The head of said feather key is wedged in the said shift gear keyway; Said feather key is the rigid beam structure, and the afterbody upper end of said feather key is provided with groove, is embedded with feather key elastic wire back-up ring in the said groove feather key afterbody is fixed on the said feather key draw ring; The bottom of said feather key is provided with as the circular arc of lower fulcrum protruding, and said circular arc convexity is between feather key head and said groove and near said groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202095385U CN202100667U (en) | 2011-06-21 | 2011-06-21 | Gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202095385U CN202100667U (en) | 2011-06-21 | 2011-06-21 | Gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100667U true CN202100667U (en) | 2012-01-04 |
Family
ID=45386681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202095385U Expired - Lifetime CN202100667U (en) | 2011-06-21 | 2011-06-21 | Gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100667U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102246633A (en) * | 2011-06-21 | 2011-11-23 | 扬州维邦园林机械有限公司 | Special lawn machine transmission |
| CN104421385A (en) * | 2013-08-27 | 2015-03-18 | 川崎重工业株式会社 | Gear structure of transmission device |
-
2011
- 2011-06-21 CN CN2011202095385U patent/CN202100667U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102246633A (en) * | 2011-06-21 | 2011-11-23 | 扬州维邦园林机械有限公司 | Special lawn machine transmission |
| CN104421385A (en) * | 2013-08-27 | 2015-03-18 | 川崎重工业株式会社 | Gear structure of transmission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120104 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |