CN205013618U - Variable transmission mechanism and variable speed rotary cultivator - Google Patents
Variable transmission mechanism and variable speed rotary cultivator Download PDFInfo
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- CN205013618U CN205013618U CN201520745399.6U CN201520745399U CN205013618U CN 205013618 U CN205013618 U CN 205013618U CN 201520745399 U CN201520745399 U CN 201520745399U CN 205013618 U CN205013618 U CN 205013618U
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Abstract
The utility model relates to a variable transmission mechanism and variable speed rotary cultivator. The utility model discloses aim at solving the inconvenient problem of prior art crowning low -speed rotary cultivator operation, provide one kind and can prevent rotary cultivator out of supply. The utility model discloses a can be adjusted freely is high, low speed shift mechanism, and shift mechanism is for utilizing the sphere auto -lock, and just behind the shift, the gear is stable, can not take place phenomenon out of supply or the card machine under assaulting. The utility model has the advantages of it is rational in infrastructure, the stable performance, the practicality is strong, and the shifter adopts involute spline to connect, and the gear combines steadily, and need not park can direct shift when machines operate, laborsaving saving time, operation safe and reliable receives numerous peasants' trust.
Description
Technical field
The utility model relates to agricultural mechanical field, is specifically related to a kind of variable transmission mechanism and speed variable tillage cultivator.
Background technique
Agricultural rotary tiller is used for the cultivated whole of soil, by wide application in agricultural production.Current known gear-shifting box of rotary cultivator only has a kind of rotating speed, and different soil properties needs different rotating speeds in reality is produced, run into different soil properties only have by change driving gear solve problem, not only time-consuming, and easily cause facility to damage, therefore during rotary cultivator ploughing operation, soil has narrow limitation, particularly can affect the benefit of tractor driver during trans-regional operation.
Have person skilled to propose to adopt duplicate gear, realize stepped transmission, but in concrete use, often effect is bad, whole transmission process is easily stuck or out of supply, inconvenient operation.
Summary of the invention
The purpose of this utility model is exactly to solve the unhandy problem of speed variable rotary cultivator in prior art, provides a kind of and can prevent rotary cultivator out of supply.
Researcher finds, in prior art, unhandy reason is mainly inconvenient in gearshift, the engage a gear of twin-stage speed change and the mechanical structure of shift general all references automobile in prior art, its complex structure cost is low, and the shift of automobile mostly is three grades or level Four, for rotary cultivator, this shift structure is too complicated, and the gear shift mechanism of simple duplicate gear can under the effect that large clod impacts in farmland, produce out of supply, or stuck, and then affect working efficiency.
Concrete scheme of the present utility model is:
A kind of variable transmission mechanism, be installed in casing, its input end is connected with power source, comprise low speed rotation chain, high-speed drive chain, in described low speed rotation chain/high-speed drive chain at the most the power of a side carry out transmit export three grades of transmission paries, the output gear of described low speed rotation chain, high-speed drive chain is three grades of transmission driving wheels, and described three grades of transmission driving wheels comprise secondary low speed follower, secondary high speed follower;
Described variable transmission mechanism comprise low speed rotation chain, high-speed drive chain, in described low speed rotation chain/high-speed drive chain at the most the power of a side carry out transmit export three grades of transmission paries, the output gear of described low speed rotation chain, high-speed drive chain is respectively secondary low speed follower, secondary high speed follower, and the driving wheel of three grades of transmission paries comprises described secondary low speed follower or described secondary high speed follower;
Described three grades of transmission paries also comprise the tertiary gear axle of coaxial package successively, joint sleeve, three grades of driven gears and regulate the fork unit of three grades of driven gear power intakes, on described tertiary gear axle, be distributed as with the joint sleeve of three grades of driven gears, fork unit and three grades of transmission driving wheels from center successively to axle head;
Described fork unit comprises Shift lever, be arranged on the press-down type Returnning spring on Shift lever, declutch shift shaft and shifting block, described declutch shift shaft is fixed in casing, match with one of described joint sleeve/secondary low speed follower/secondary high speed follower in described shifting block one end, the other end is fixed on described declutch shift shaft, one end of described Shift lever is connected with described declutch shift shaft by hinged connecting element, the other end extends to outside described casing, location at spherical surface cover is provided with at described casing and the Shift lever place of intersecting, Shift lever is provided with the inner ball surface corresponding with described location at spherical surface cover, described press-down type Returnning spring one end is fixed on described casing, the other end is connected with Shift lever by locating stud.
Preferably, described hinged connecting element is included in the hinged attachment hole that described declutch shift shaft is arranged, and the aperture of the end of this hinged attachment hole is less than the aperture of its inside, and the hole depth of this hinged attachment hole is greater than described Shift lever shared length 3 ~ 5cm in hole.
Or described hinged connecting element comprises that to be sleeved on described declutch shift shaft, with declutch shift shaft be the switch block of center of rotation, and this switch block is provided with hinged attachment hole, and the aperture of the end of this hinged attachment hole is less than the aperture of its inside.
Preferably, also comprise gear fixing device, described gear fixing device is included in the locating slot that described declutch shift shaft is arranged and the spring block coordinated with this locating slot, and the fixed end of this spring block is fixed in the casing of speed variable tillage cultivator.
Preferably, inner hole surface and the described tertiary gear between centers of described joint sleeve are spline joint, the outer axial face of described joint sleeve and three grades of transmission driving wheel wheel hubs are provided with identical external splines groove, and described shifting block is provided with the inner spline groove matched with above-mentioned external splines groove.
Preferably, the bottom of described casing is provided with magnetic oil draining bolt.
The speed variable tillage cultivator of this variable transmission mechanism is installed, comprise for the power source of described variable transmission mechanism input power, three grades of input gears matching with described variable transmission mechanism, described three grades of input gears match with three grades of output gears, and these three grades of output gears connect the output shaft of speed variable tillage cultivator.
Or described three grades of input gears match with three grades of output gears, and three grades of output gears connect again level Four output gear, this level Four output gear connects the output shaft of speed variable tillage cultivator.
A method for changing speed for rotary cultivator, uses this variable transmission mechanism, utilizes the pressing down of lever, the reset of spring, the sphere-contact between lever and casing and shift fork simultaneously, completes shift, and the self-locking in engage a gear process.
The beneficial effects of the utility model are:
(1) adopt shift fork, sphere from the combination of lock technology, achieve rotary cultivator high speed, freely changing between low speed and idle running, and in use, it is steady that the fixed mechanisms such as sphere self-locking in turn ensure that it runs, situation out of supply can not be there is, meanwhile, avoid automobile-used gear shift mechanism, save most of cost;
(2) in using process, first to pressing down, then shift, meet the use habit of rotary cultivator, Returnning spring ensure that can resilience in time, and self-locking in time after gear arrives specified position, is convenient to keep in repair simultaneously;
(3) design of involute splines groove, makes shift process more steady, stress equalization, and does not need parking can direct shift when facility operate, and laborsavingly saves time, and job safety is reliable;
(4) inner iron filings can be discharged by oil discharge screw in time, extend complete machine working life.
Accompanying drawing explanation
Fig. 1 is that the master of the utility model rotary cultivator high and low speed speed case looks sectional structure schematic diagram;
Fig. 2 is that the A-A of Fig. 1 is to sectional structure schematic diagram;
Fig. 3 is that the B-B of Fig. 1 is to sectional structure schematic diagram;
Fig. 4 is that the utility model axle surveys direction structure schematic diagram;
Fig. 5 is that the axle of the utility model middle gear drive mechanism surveys direction structure schematic diagram;
Fig. 6 is the main apparent direction structural representation of the utility model middle gear drive mechanism
Each component names in figure: 1. casing; 2. upper cover of speed changing box; 3. secondary high speed driving wheel; 4. drive bevel gear; 5. Shift lever; 6. press-down type Returnning spring; 7. location at spherical surface cover; 8. fork unit; 9. secondary low speed driving wheel; 10. gear fixing device; 11. declutch shift shafts; 12. secondary low speed followers; 13. tertiary gear axles; 14. joint sleeves; 15. low speed rotation sliding sleeves; 16. 3 grades of driven gears; 17. secondary high speed followers; 18. high-speed drive sliding sleeves; 19. 4 gear stages; 20. cutter shaft driving devices; 21. input shafts; 22. one-level output shafts; 23. magnetic oil draining bolts; 24. switch blocks.
Embodiment
Embodiment 1: a kind of speed variable tillage cultivator, see Fig. 1 to Fig. 3, variable transmission mechanism is installed in casing, its input end is connected with power source, comprise low speed rotation chain, high-speed drive chain, in low speed rotation chain/high-speed drive chain at the most the power of a side carry out transmit export three grades of transmission paries, the output gear of low speed rotation chain, high-speed drive chain is respectively secondary low speed follower 12, the driving wheel of secondary high speed follower 17, three grades of transmission paries comprises described secondary low speed follower 12 or described secondary high speed follower 17;
Three grades of transmission paries also comprise the tertiary gear axle 13 of coaxial package successively, joint sleeve 14, three grades of driven gears 16 and regulate the fork unit of three grades of driven gear 16 power intakes, on tertiary gear axle 13, be distributed as with the joint sleeve 14 of three grades of driven gears 16, fork unit and three grades of transmission driving wheels from center successively to axle head;
Fork unit comprises Shift lever 5, be arranged on the press-down type Returnning spring 6 on Shift lever 5, declutch shift shaft 11 and shifting block, declutch shift shaft 11 is fixed in casing 1, match with joint sleeve 14/ secondary low speed follower 12/ secondary high speed follower 17 in shifting block one end, the other end is fixed on declutch shift shaft 11, one end of Shift lever 5 is connected with declutch shift shaft 11 by hinged connecting element, the other end extends to outside casing 1, intersect at casing 1 and Shift lever 5 and locate, the internal surface of casing 1 is provided with location at spherical surface cover 7, Shift lever 5 is provided with the inner ball surface corresponding with location at spherical surface cover 7, press-down type Returnning spring 6 one end is fixed on casing 1, the other end is connected with Shift lever 5 by locating stud.
Hinged connecting element is included in the hinged attachment hole that declutch shift shaft is arranged, the aperture of the end of this hinged attachment hole is less than the aperture of its inside, Shift lever shared length in hole is length of thread engagement, long 3 ~ the 5cm of length of thread engagement described in the hole depth rate of this hinged attachment hole, specifically be as the criterion pressing down, in the present embodiment, select 4cm.
Also comprise gear fixing device 10, gear fixing device 10 is included in the locating slot that declutch shift shaft is arranged and the spring block coordinated with this locating slot, and the fixed end of this spring block is fixed in the casing of speed variable tillage cultivator.
The inner hole surface of joint sleeve and tertiary gear between centers are spline joint, and the outer axial face of joint sleeve and three grades of transmission driving wheel wheel hubs are provided with identical external splines groove, and shifting block is provided with the inner spline groove matched with above-mentioned external splines groove.
In the present embodiment, spline joint selects involute splines, makes gearshift more steady.
The bottom of casing is provided with magnetic oil draining bolt 23.
Three grades of input gears match with three grades of output gears, and these three grades of output gears connect the output shaft of speed variable tillage cultivator.
During operation, gear is adjusted to neutral position, the power that tractor exports is delivered to input shaft 21 by gimbal coupling, input shaft 21 engages with the drive bevel gear 4 on one-level output shaft 22, secondary high speed driving wheel 3 and secondary low speed driving wheel 9 is driven to rotate, secondary high speed driving wheel 3 and secondary low speed driving wheel 9 drive secondary high speed follower 17 and secondary low speed follower 12 to rotate, now, owing to being in neutral position, low speed rotation sliding sleeve 15 and high-speed drive sliding sleeve 18 are not combined with secondary low speed follower 12 and secondary high speed follower 17, so three grades of driven gears 16 remain static, power can not to underdrive, as needed low speed operation, press down Shift lever 5 and move left, fork unit 8 drives low speed rotation sliding sleeve 15 and high-speed drive sliding sleeve 18 to slide on joint sleeve 14 to the right, declutch shift shaft 11 also moves right, the hoodle of gear fixing device 10 is combined with the locating slot of declutch shift shaft 11 to be fixed declutch shift shaft 11, the involute splines of low speed rotation sliding sleeve 15 is connected with secondary low speed follower 12 involute splines, unclamp Shift lever 5, Shift lever 5 resilience under press-down type Returnning spring 6 acts on, the middle sphere of Shift lever 5 is combined with the inner ball surface of location at spherical surface cover 7 and fixes, now secondary low speed follower 12 drives joint sleeve 14 to rotate by low speed rotation sliding sleeve 15, joint sleeve 14 drives three grades of driven gears 16 to rotate, power is delivered on the shaft spline shaft of cutter shaft driving device 20 through four gear stages 19, rotary tiller shaft is driven to carry out revolving ground operation, magnetic oil draining bolt 23 produces iron filings by meshed transmission gear process, fragment is adsorbed on self, play the effect of clean lubricant oil.Otherwise, as needed high-speed job, press down Shift lever 5 and move to the right, shift fork 8 drives low speed rotation sliding sleeve 15 and high-speed drive sliding sleeve 18 to slide on joint sleeve 14 left, declutch shift shaft 11 is also moved to the left, the hoodle of gear fixing device 10 is combined with the locating slot of declutch shift shaft 11 to be fixed declutch shift shaft 11, the involute splines of high-speed drive sliding sleeve 18 is connected with secondary high speed follower 17 involute splines, unclamp Shift lever 5, Shift lever 5 resilience under press-down type Returnning spring 6 acts on, the middle sphere of Shift lever 5 is combined with the inner ball surface of location at spherical surface cover 7 and fixes, now secondary high speed follower 17 drives joint sleeve 14 to rotate by high-speed drive sliding sleeve 18, joint sleeve 14 drives three grades of driven gears 16 to rotate, power is delivered on the shaft spline shaft of cutter shaft driving device 20 through four gear stages 19, rotary tiller shaft is driven to carry out revolving ground operation.
A method for changing speed for rotary cultivator, uses this variable transmission mechanism, utilizes the pressing down of lever, the reset of spring, the sphere-contact between lever and casing and shift fork simultaneously, completes shift, and the self-locking in engage a gear process.
Embodiment 2: the present embodiment principle is with embodiment 1, concrete difference is, hinged connecting element comprises that to be sleeved on declutch shift shaft, with declutch shift shaft be the switch block of center of rotation, and this switch block is provided with hinged attachment hole, and the aperture of the end of this hinged attachment hole is less than the aperture of its inside.
Embodiment 3 ~ 4: the present embodiment principle is with embodiment 1 ~ 2, and concrete difference is, three grades of input gears match with three grades of output gears, and three grades of output gears connect again level Four output gear, and this level Four output gear connects the output shaft of speed variable tillage cultivator.
Finally it should be noted that, above person is only the utility model section Example, and is not used to limit the utility model, and according to structure of the present utility model and feature, the modifications person of forming a little, also should be included within the utility model scope.
Claims (9)
1. a variable transmission mechanism, be installed in casing, its input end is connected with power source, it is characterized in that: described variable transmission mechanism comprise low speed rotation chain, high-speed drive chain, in described low speed rotation chain/high-speed drive chain at the most the power of a side carry out transmit export three grades of transmission paries, the output gear of described low speed rotation chain, high-speed drive chain is respectively secondary low speed driven gear, secondary high speed driven gear, and the driving wheel of three grades of transmission paries comprises described secondary low speed driven gear or described secondary high speed driven gear;
Described three grades of transmission paries also comprise the tertiary gear axle of coaxial package successively, joint sleeve, three grades of driven gears and regulate the fork unit of three grades of driven gear power intakes, on described tertiary gear axle, be distributed as with the joint sleeve of three grades of driven gears, fork unit and three grades of transmission driving wheels from center successively to axle head;
Described fork unit comprises Shift lever, be arranged on the press-down type Returnning spring on Shift lever, declutch shift shaft and shifting block, described declutch shift shaft is fixed in casing, match with one of described joint sleeve/secondary low speed driven gear/secondary high speed driven gear in described shifting block one end, the other end is fixed on described declutch shift shaft, one end of described Shift lever is connected with described declutch shift shaft by hinged connecting element, the other end extends to outside described casing, location at spherical surface cover is provided with at described casing and the Shift lever place of intersecting, Shift lever is provided with the inner ball surface corresponding with described location at spherical surface cover, described press-down type Returnning spring one end is fixed on described casing, the other end is connected with Shift lever by locating stud.
2. variable transmission mechanism as claimed in claim 1, it is characterized in that: described hinged connecting element is included in the hinged attachment hole that described declutch shift shaft is arranged, the aperture of the end of this hinged attachment hole is less than the aperture of its inside, described Shift lever shared length in hole is length of thread engagement, the long 3 ~ 5cm of length of thread engagement described in the hole depth rate of this hinged attachment hole.
3. variable transmission mechanism as claimed in claim 1, it is characterized in that: described hinged connecting element comprises that to be sleeved on described declutch shift shaft, with declutch shift shaft be the switch block of center of rotation, this switch block is provided with hinged attachment hole, and the aperture of the end of this hinged attachment hole is less than the aperture of its inside.
4. variable transmission mechanism as claimed in claim 2 or claim 3, it is characterized in that: also comprise gear fixing device, described gear fixing device is included in the locating slot that described declutch shift shaft is arranged and the spring block coordinated with this locating slot, and the fixed end of this spring block is fixed in the casing of speed variable tillage cultivator.
5. variable transmission mechanism as claimed in claim 4, it is characterized in that: inner hole surface and the described tertiary gear between centers of described joint sleeve are spline joint, the outer axial face of described joint sleeve and three grades of transmission driving wheel wheel hubs are provided with identical external splines groove, and described shifting block is provided with the inner spline groove matched with above-mentioned external splines groove.
6. variable transmission mechanism as claimed in claim 5, is characterized in that: described spline is involute splines.
7. a speed variable tillage cultivator, variable transmission mechanism as claimed in claim 1 is installed, it is characterized in that: comprise for the power source of described variable transmission mechanism input power, three grades of input gears matching with described variable transmission mechanism, described three grades of input gears match with three grades of output gears, and these three grades of output gears connect the output shaft of speed variable tillage cultivator.
8. speed variable tillage cultivator as claimed in claim 7, is characterized in that: described three grades of input gears match with three grades of output gears, and three grades of output gears connect again level Four output gear, and this level Four output gear connects the output shaft of speed variable tillage cultivator.
9. speed variable tillage cultivator as claimed in claim 7 or 8, is characterized in that: the bottom of described casing is provided with magnetic oil draining bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745399.6U CN205013618U (en) | 2015-09-24 | 2015-09-24 | Variable transmission mechanism and variable speed rotary cultivator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745399.6U CN205013618U (en) | 2015-09-24 | 2015-09-24 | Variable transmission mechanism and variable speed rotary cultivator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013618U true CN205013618U (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520745399.6U Expired - Fee Related CN205013618U (en) | 2015-09-24 | 2015-09-24 | Variable transmission mechanism and variable speed rotary cultivator |
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| Country | Link |
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| CN (1) | CN205013618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156612A (en) * | 2015-09-24 | 2015-12-16 | 刘浩 | Variable-speed transmission mechanism, variable-speed rotary cultivator and speed change method |
-
2015
- 2015-09-24 CN CN201520745399.6U patent/CN205013618U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156612A (en) * | 2015-09-24 | 2015-12-16 | 刘浩 | Variable-speed transmission mechanism, variable-speed rotary cultivator and speed change method |
| CN105156612B (en) * | 2015-09-24 | 2018-04-24 | 刘浩 | Variable transmission mechanism, speed variable tillage cultivator and method for changing speed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160203 Termination date: 20180924 |