CN102246633A - Special lawn machine transmission - Google Patents
Special lawn machine transmission Download PDFInfo
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- CN102246633A CN102246633A CN2011101667733A CN201110166773A CN102246633A CN 102246633 A CN102246633 A CN 102246633A CN 2011101667733 A CN2011101667733 A CN 2011101667733A CN 201110166773 A CN201110166773 A CN 201110166773A CN 102246633 A CN102246633 A CN 102246633A
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- gear
- shaft
- feather key
- shifting
- duplicate
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Abstract
The invention relates to a special lawn machine transmission. The upper end of the transmission body is provided with a bevel gear shaft which is inserted vertically in the transmission body, the upper end of the bevel gear shaft is provided with a driving belt wheel, a bevel gear which is connected with the lower end of the bevel gear shaft is meshed with an input bevel gear, the input bevel gear is arranged on one end of an input shaft, the other end of the input shaft is provided with an input gear, the input gear is meshed with a dual gear set, the dual gear set is sleeved on an output shaft and a sliding key shaft respectively through bearings to be finally meshed with an output gear, the output gear is fixed on the sliding key shaft; the sliding key shaft is also provided with a gear-position gear set which is shifted by a sliding key, the gear-position gear set is meshed with a change gear set, the change gear set is supported on the output shaft through a bearing; and the end surface of the change gear set is combined with a clutch, the inside of the inner hole of the clutch is provided with a clutch spline, and the clutch spline is fixed on the output shaft through a transmission pin. The transmission ratio of the transmission is high, the transmission can be matched with a general gasoline engine and the manufacturing cost of the lawn machine can be greatly reduced.
Description
Technical field
The present invention relates to the special-purpose speed changer of a kind of lawn machine, belong to the varying-speed machinery technical field.
Background technology
From walking the high low speed double output shaft of the common supporting special use of the long-life speed changer engine that the lawn machine is used, pass to gearbox with the low speed output shaft in the market, the gearratio of this gearbox is less, and input speed only is about 320rpm, to belong 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.
Summary of the invention
The objective of the invention is to, overcome problems of the prior art, a kind of special-purpose speed changer of lawn machine of high transmission ratio is provided, can be equipped with general gasoline engines.
For solving above technical problem, the special-purpose speed changer of a kind of lawn provided by the present invention machine, comprise casing, described casing upper end is provided with the angular wheel shaft in the vertical insertion casing, the upper end of described angular wheel shaft is equipped with driving pulley, the bevel gear that is connected described angular wheel shaft lower end is meshed with input bevel gear, described input bevel gear is installed on an end of power shaft, the other end of described power shaft is provided with the input gear, described input gear is meshed with the duplicate gear group, described duplicate gear group is set on output shaft and the sliding key shaft and final and output gear engagement by bearing, and described output gear is fixed on the described sliding key shaft; The shifting gear group of being shifted gears by feather key also is installed on the described sliding key shaft, and described shifting gear group is meshed with the change-speed gearing group, described change-speed gearing group by bearings on described output shaft; The end face of described change-speed gearing group combines with clutch, is provided with the clutch spline in the endoporus of described clutch, and described clutch spline is fixed on the output shaft by trundle.
With respect to prior art, the present invention has obtained following beneficial effect: the rotation of driving pulley drives angular wheel shaft and rotates, and angular wheel shaft drives input bevel gear and power shaft rotates, and the input gear on the power 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 inserted in some shifting gears, and this shifting gear will drive corresponding change-speed gearing and rotate; When clutch is in engagement state, change-speed gearing will drive clutch and output shaft rotates.This speed changer adopts full-depth tooth wheel speed change, transmitted power is big, reliable transmission and gearratio are big, input speed can reach the high rotating speed about 3200rpm, driving pulley can be by belt and general gasoline engines coupling, can save the expense of buying expensive proprietary engine, reduce the manufacturing cost of lawn machine greatly; Simultaneously, this speed changer structure compactness, little, the convenience of transferring the files of appearance and size are easy to make.
As preferred version of the present invention, described duplicate gear group comprises first duplicate gear, second duplicate gear and the 3rd duplicate gear, described first duplicate gear and the 3rd duplicate gear are installed on the described output shaft by bearing, and described second duplicate gear is installed on the described sliding key shaft by bearing; The gear wheel of described first duplicate gear and described input gears engaged, the gear wheel engagement of the pinion of described first duplicate gear and described second duplicate gear, the gear wheel engagement of the pinion of described second duplicate gear and described the 3rd duplicate gear, the pinion of described the 3rd duplicate gear and the engagement of described output gear.By the continuous engagement of the big pinion of duplicate gear, big reduction of speed ratio and reliable transmission have been realized.
As preferred version of the present invention, described shifting gear group comprises a plurality of shifting gears with different drive ratios, is respectively equipped with the shifting gear pad between each shifting gear; Described change-speed gearing group comprises a plurality of change-speed gearings of corresponding engagement with shifting gear respectively, in the endoporus of described change-speed gearing group spline housing is installed, and the spline housing bearing is housed in the endoporus of described spline housing and passes through the spline housing bearings on described output shaft.
As the further preferred version of the present invention, the endoporus of each shifting gear is respectively equipped with the shifting gear keyway in the described shifting gear group, described sliding key shaft is provided with featherway, described feather key is arranged in featherway and can slides vertically at featherway, the afterbody of described feather key is provided with and drives the feather key draw ring that feather key moves, the head of described feather key is inserted in the described shifting gear keyway, described feather key is the buckstay structure, the afterbody upper end of described feather key is provided with groove, being embedded with feather key elastic wire back-up ring in the described groove is fixed on the feather key afterbody on the described feather key draw ring, the bottom of described feather key is provided with the circular arc projection as lower fulcrum, and described circular arc projection is between feather key head and described groove and near described 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, and the shifting gear pad presses down the feather key head, and feather key is the center with self lower fulcrum, the elastic force that overcomes the elastic wire back-up ring rotates counterclockwise, make feather key separate the position that the back arrives second shifting gear with first shifting 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 shifting gear and engage, realized feather key gear shift function; The feather key head relies on the elastic force of elastic wire back-up ring to realize and the separating or engages of shifting gear that the feather key of buckstay structure does not need itself strain, and the intensity height is not easy to rupture good reliability.
Description of drawings
Fig. 1 is the structural representation of the special-purpose speed changer of lawn of the present invention machine.
Fig. 2 is the schematic perspective view of feather key gear in the special-purpose speed changer of lawn of the present invention machine.
Fig. 3 is the structure chart 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 power 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 spacer pin; 7c spacer 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 shifting gear; 13b second shifting gear; 13c third gear gear; 14 shifting gear pads; The 15a first stud gear; The 15b second stud gear; 15c the 3rd change-speed gearing; The 15d spline housing; 15e spline housing bearing; 15f change-speed gearing back-up ring; 16 clutches; 16a clutch spline; The 16b trundle.
Embodiment
As shown in Figure 1, the special-purpose speed changer of lawn of the present invention machine, comprise casing 1, 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 by deep groove ball bearing 2a, single-row needle bearing 2b and thrust bearing 2c, and realizes sealing by inner frame two-lip seal 2d.The bevel 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 power shaft 4, and the other end of power shaft 4 is equipped with input gear 6 by flat key 6a, and input gear 6 is meshed with the duplicate gear group.Power shaft 4 two ends are supported on the casing 1 by bearing of input shaft 4a, pass through input axle sleeve 4b axial location 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 by needle bearing 8a, and the 3rd duplicate gear 10 is installed on the output shaft 7 by needle bearing 10a.First duplicate gear 8 and the 3rd duplicate gear 10 pass on left spacer pin 7b and spacer pin interstage sleeve 7c axial location, and the right side is by split washer 7d axial location, 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 by output shaft bearing 7a, and sealing is realized by 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 gear wheel of first duplicate gear 8 and 6 engagements of input gear, the gear wheel engagement of the pinion of first duplicate gear 8 and second duplicate gear 9, the gear wheel engagement of the pinion of second duplicate gear 9 and the 3rd duplicate gear 10, the pinion of the 3rd duplicate gear 10 and output gear 11 engagements.By the continuous engagement of the big pinion of duplicate gear, big reduction of speed ratio and reliable transmission have been realized.The axis of power 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 by 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 axial location.The shifting gear group of being shifted gears by feather key also is installed on the sliding key shaft 12, the shifting gear group comprises the first shifting gear 13a, the second shifting gear 13b and the third gear gear 13c with different drive ratios, is respectively equipped with shifting gear pad 14 between each shifting gear.
The change-speed gearing group comprises respectively and first stud gear 15a, second stud gear 15b and the 3rd change-speed gearing 15c of the first shifting gear 13a, the second shifting gear 13b and the corresponding engagement of third gear gear 13c that the left side of the 3rd change-speed gearing 15c is equipped with change-speed gearing back-up ring 15f the change-speed gearing group is carried out axial location.Spline housing 15d is installed in the endoporus of change-speed gearing group, spline housing bearing 15e is housed in the endoporus of spline housing 15d and is supported on the output shaft 7 by spline housing bearing 15e.Its right end face of change-speed gearing 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 by trundle 16b, and clutch 16 can move axially on clutch spline 16a to realize joint or to separate.
As shown in Figures 2 and 3, the endoporus of each shifting gear is respectively equipped with the shifting 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 buckstay structure, the feather key head is inserted in the shifting gear keyway, the afterbody upper end of feather key is provided with groove, being embedded with feather key elastic wire back-up ring 12f in the groove is fixed on the feather key afterbody on the feather key draw ring 12e, the bottom of feather key 12d is provided with the circular arc projection as lower fulcrum, the circular arc projection is between feather key head and groove and near groove, and feather key elastic wire back-up ring 12f can make feather key head generation 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 power shaft 4 rotates, and the input gear 6 on the power 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 inserted in some shifting gears, and this shifting gear will drive corresponding change-speed gearing and rotate; When clutch 16 is in engagement state, change-speed gearing 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, shifting gear pad 14 presses down the feather key head, feather key 12d is a fulcrum with the circular arc projection of self bottom, the elastic force that overcomes the elastic wire back-up ring rotates counterclockwise, make feather key 12d separate the position that the back arrives the second shifting gear 13b with the first shifting 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 projection of self bottom, lift on the feather key head with the second shifting gear 13b and engage, realized feather key gear shift function.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (4)
1. special-purpose speed changer of lawn machine, comprise casing, it is characterized in that: described casing upper end is provided with the angular wheel shaft in the vertical insertion casing, the upper end of described angular wheel shaft is equipped with driving pulley, the bevel gear that is connected described angular wheel shaft lower end is meshed with input bevel gear, described input bevel gear is installed on an end of power shaft, the other end of described power shaft is provided with the input gear, described input gear is meshed with the duplicate gear group, described duplicate gear group is set on output shaft and the sliding key shaft and final and output gear engagement by bearing, and described output gear is fixed on the described sliding key shaft; The shifting gear group of being shifted gears by feather key also is installed on the described sliding key shaft, and described shifting gear group is meshed with the change-speed gearing group, described change-speed gearing group by bearings on described output shaft; The end face of described change-speed gearing group combines with clutch, is provided with the clutch spline in the endoporus of described clutch, and described clutch spline is fixed on the output shaft by trundle.
2. the special-purpose speed changer of lawn according to claim 1 machine, it is characterized in that: described duplicate gear group comprises first duplicate gear, second duplicate gear and the 3rd duplicate gear, described first duplicate gear and the 3rd duplicate gear are installed on the described output shaft by bearing, and described second duplicate gear is installed on the described sliding key shaft by bearing; The gear wheel of described first duplicate gear and described input gears engaged, the gear wheel engagement of the pinion of described first duplicate gear and described second duplicate gear, the gear wheel engagement of the pinion of described second duplicate gear and described the 3rd duplicate gear, the pinion of described the 3rd duplicate gear and the engagement of described output gear.
3. the special-purpose speed changer of lawn according to claim 1 machine, it is characterized in that: described shifting gear group comprises a plurality of shifting gears with different drive ratios, is respectively equipped with the shifting gear pad between each shifting gear; Described change-speed gearing group comprises a plurality of change-speed gearings of corresponding engagement with shifting gear respectively, in the endoporus of described change-speed gearing group spline housing is installed, and the spline housing bearing is housed in the endoporus of described spline housing and passes through the spline housing bearings on described output shaft.
4. according to the special-purpose speed changer of each described lawn machine in the claim 1 to 3, it is characterized in that: the endoporus of each shifting gear is respectively equipped with the shifting gear keyway in the described shifting gear group, described sliding key shaft is provided with featherway, described feather key is arranged in featherway and can slides vertically at featherway, the afterbody of described feather key is provided with and drives the feather key draw ring that feather key moves, the head of described feather key is inserted in the described shifting gear keyway, described feather key is the buckstay structure, the afterbody upper end of described feather key is provided with groove, being embedded with feather key elastic wire back-up ring in the described groove is fixed on the feather key afterbody on the described feather key draw ring, the bottom of described feather key is provided with the circular arc projection as lower fulcrum, and described circular arc projection is between feather key head and described groove and near described groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110166773 CN102246633B (en) | 2011-06-21 | 2011-06-21 | Special lawn machine transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110166773 CN102246633B (en) | 2011-06-21 | 2011-06-21 | Special lawn machine transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102246633A true CN102246633A (en) | 2011-11-23 |
| CN102246633B CN102246633B (en) | 2012-12-19 |
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ID=44974502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110166773 Active CN102246633B (en) | 2011-06-21 | 2011-06-21 | Special lawn machine transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102246633B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3916706A (en) * | 1973-11-28 | 1975-11-04 | Frost & Son C L | Mower drive shaft and pulley |
| US20020139210A1 (en) * | 2001-04-03 | 2002-10-03 | France Reducteurs | Device for transmission between a primary motor shaft and an output shaft and lawn mower provided with such a device |
| CN2822156Y (en) * | 2005-09-30 | 2006-10-04 | 乌江 | Threshing cutting double purpose machine |
| CN202100667U (en) * | 2011-06-21 | 2012-01-04 | 扬州维邦园林机械有限公司 | Gearbox |
-
2011
- 2011-06-21 CN CN 201110166773 patent/CN102246633B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3916706A (en) * | 1973-11-28 | 1975-11-04 | Frost & Son C L | Mower drive shaft and pulley |
| US20020139210A1 (en) * | 2001-04-03 | 2002-10-03 | France Reducteurs | Device for transmission between a primary motor shaft and an output shaft and lawn mower provided with such a device |
| CN2822156Y (en) * | 2005-09-30 | 2006-10-04 | 乌江 | Threshing cutting double purpose machine |
| CN202100667U (en) * | 2011-06-21 | 2012-01-04 | 扬州维邦园林机械有限公司 | Gearbox |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102246633B (en) | 2012-12-19 |
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