CN207443385U - A kind of harvester, mini-tiller and its gearbox - Google Patents
A kind of harvester, mini-tiller and its gearbox Download PDFInfo
- Publication number
- CN207443385U CN207443385U CN201720658758.3U CN201720658758U CN207443385U CN 207443385 U CN207443385 U CN 207443385U CN 201720658758 U CN201720658758 U CN 201720658758U CN 207443385 U CN207443385 U CN 207443385U
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- gear
- clutch
- input terminal
- shaft
- gearbox
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Abstract
The utility model discloses a kind of harvester, mini-tiller and its gearbox, wherein, the gearbox includes input terminal and output terminal, it is characterised in that：The input terminal is two and rotates synchronously, one of input terminal A（1）Drive the output terminal（3）It rotates forward, another input terminal B（2）Drive the output terminal（3）Reversion.Using the gear of the utility model, shift speed can be improved.
Description
Technical field：
The utility model is related to a kind of field of agricultural machinery more particularly to harvester, mini-tiller and its gearboxes.
Background technology：
Harvester is the machinery of integration harvesting crops.It is disposable to complete harvesting, threshing, and grain is focused on into storage
Then grain is being transported on transport vehicle by storehouse by conveyer belt.Also hand harvest can be used, the straw of the crops such as paddy and wheat is spread
Field is placed on, then carries out pickup threshing with cereal harvesting machinery again.Harvest the crop of the cereal crops seeds such as paddy and wheat and stalk
Harvest machinery.Including harvester, cutter-rower, reaper binder, grain combine and grain separator etc..Cereal harvesting machinery is
Grow up on the basis of various harvestings, threshing instrument.
Mini-tiller using small diesel engine or gasoline engine as power, have it is light-weight, it is small, it is simple in structure the features such as.It is micro-
Cultivated machine is widely used in Plain, mountain area, the nonirrigated farmland on hills, paddy field, orchard etc..Mixing corresponding accessory can be drawn water, generated electricity, be sprayed
The operations such as medicine, spray can also draw towed vehicle and carry out short-distance transport, and mini-tiller can freely be exercised in field, made convenient for user
With and storage, eliminate the worry that large-scale farm machinery cannot be introduced into mountain area field, be vast farmers consumer substitute ox plough
Optimal selection.
In harvester and the existing gearbox of mini-tiller, the advance and retroversion of vehicle are completed by gear and shift fork,
When shift fork, which pushes driving tooth, to be engaged with forward gear, the advance of vehicle is realized；When driving gear is pushed and reversed gear by shift fork
When gear engages, the retroversion of vehicle is realized.Time-consuming for the transition regime that existing this forward gear and retroversion are worked as, and forward gear is become
Become forward gear to reverse gear or being up to and at least need 10 seconds, and needed between gear and gear it is frequent engage and disengaging, tooth
Friction and collision easily occur between wheel and gear, causes the abrasion of gear, and it is also possible to occurs out of supply.Such mode pole
Unreliable, the work efficiency for also resulting in harvester and mini-tiller is low.
Utility model content：
The purpose of this utility model is to provide a kind of short mini-tillers of shift time and the gear of harvester.
To achieve these goals, the utility model is realized in this way：A kind of gear, including input terminal and output
End, it is characterised in that：The input terminal is two and rotates synchronously, and one of input terminal A drives the output terminal to rotate forward, separately
One input terminal B drives the output terminal reversion.The gear set using aforesaid way can be realized and reversed gear and forward gear
Be switched fast, improve work efficiency.
Wherein, described " rotating forward " refers to that output terminal rotates in same direction with input terminal, and " reversion " refers to output terminal and input
End rotates backward.
In order to further improve the reliability of gear, the input terminal A passes through clutch A and the output terminal phase
Even；The input terminal B is connected with clutch B input terminals, and the output terminal of the clutch B is through even numbers gear and the output terminal
It is connected；Gearshift is provided between the clutch A and the clutch B.
In order to further improve reliability, the input terminal A includes driving shaft A, and the output terminal includes driven shaft, described
Driving shaft A is connected with the input terminal of the clutch A, the output terminal of the clutch A and the driven axis connection.
In order to further save cost, the input terminal B includes driving shaft B, in the driving shaft B and the clutch B
Input terminal connection, the output terminal of the clutch B is connected with jackshaft, and the jackshaft is arranged in parallel with the driven shaft,
Even numbers gear is provided between the jackshaft and the driven shaft.
Preferably, the output terminal of the jackshaft is arranged with gear Z1, and the gear Z1 is engaged with gear Z2, the gear
Z2 is engaged with the gear Z3, and the gear Z3 is engaged with gear Z4 fixed on the driven shaft.
In order to further increase the gear of gear, gear Z5, the gear Z1 and gear Z5 are further included as the number of teeth not
Same duplex-gear, is slidably installed in by spline on the jackshaft；It is fixed to further include gear Z6, the gear Z6 and the gear Z2
On same gear shaft, the gear Z5 is engaged with the gear Z6, is provided with and is dialled between the gear Z1 and gear Z5
Pitch mechanism.
In order to further improve the reliability of gear, further include left box body and right case, the driving shaft A with it is described
Driving shaft B is arranged on by bearing portions in the right case, and the clutch A and the clutch B are arranged on the right case
In vivo, one end of the driven shaft and the jackshaft is arranged on by axis on the left box body, the gear shaft of the gear Z2
It is arranged on the gear shaft of the gear Z3 by bearing in the left box body.
In order to further improve convenience, the shifting fork mechanism includes being arranged between the gear Z1 and the gear Z5
Shift fork, the shift fork is connected with shift fork axle, and described shift fork axle one end is stretched out the left box body and is connected with striking gear.
In order to further improve shift speed, the gearshift includes gearshift swing arm, and the middle part of the gearshift swing arm is consolidated
Surely shifting shaft is connected with, the right case is stretched out in described shifting shaft one end, and the shifting shaft can drive the gearshift swing arm to swing,
The gearshift swing arm both ends are respectively acting on the clutch A and the clutch B, and the clutch A and the clutch B are
Normally open clutch.
In order to further improve shift speed, it is arranged with and turns respectively in the input terminal of the driving shaft A and the driving shaft B
Driving wheel is arranged with belt on the rotating wheel, and the belt is also connected with driving wheel.
A kind of harvester, including gearbox described above, for the gearbox as auxiliary transmission, input terminal passes through institute
The output terminal for stating main-gear box drives.
A kind of mini-tiller, including gearbox described above, for the gearbox as auxiliary transmission, input terminal passes through institute
The output terminal for stating main-gear box drives.
Advantageous effect：
1st, using the gear and mini-tiller and harvester of the utility model, it can realize forward gear and reverse gear quick
Switching, it is only necessary to can just complete for 1 second, drastically increase shift speed.
2nd, the abrasion of gear can be reduced, is improved the service life of mechanism, and ensures the reliability of gearshift.
3rd, can ensure to shift gears（Forward gear is with reversing gear）Success rate reaches 100%.
4th, harvesting efficiency more than 15% can be improved, improves farming efficiency more than 15%.
Description of the drawings：
Fig. 1 is the front view of gear；
Fig. 2 is the A-A sectional views of Fig. 1；
Fig. 3 is gear axonometric drawing（Without babinet）.
Specific embodiment：
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings, but the utility model
These embodiments are not limited to, any improvement or replacement on the present embodiment essence spirit still falls within the utility model
Claim scope claimed.
Embodiment 1：A kind of gear, including input terminal and output terminal, the input terminal is two and rotates synchronously,
In input terminal A1 the output terminal 3 is driven to rotate forward, another input terminal B2 drives the output terminal 3 to invert.
Wherein, the input terminal A1 can be directly connected to the output terminal 3 by axis or connect the output by shaft coupling
End 3 connects the output terminal by clutch.The input terminal B2 can connect output terminal by gear.
A kind of mini-tiller for including gear in the present embodiment.
A kind of harvester for including gear in the present embodiment.
The gear set using aforesaid way, it is only necessary to can realize for 1 second and to reverse gear and forward gear is switched fast.And
Gearshift mode is reliable, can ensure 100% gearshift success rate.The abrasion between gear is also avoided, improves device longevity.And
And also so that the harvesting efficiency of harvester improves 15%, the farming efficiency of mini-tiller improves 15%.
Embodiment 2：As shown in Figs. 1-3, a kind of gear, including input terminal and output terminal, the input terminal is two
And rotate synchronously, one of input terminal A1 drives the output terminal 3 to rotate forward, another input terminal B2 drives the output terminal 3
Reversion.
Wherein, the input terminal A1 include driving shaft A11, the output terminal 3 include driven shaft 31, the input terminal A1 with
The input terminal connection of normally open clutch A4, the output terminal of the clutch A4 are directly connected to the driven shaft 31.The input
The rotary power of A1 is held to be transferred to output terminal 3 by clutch A4, realization input terminal A1 rotates in same direction with the output terminal 3.
Complete forward gear.
The input terminal B2 is arranged in parallel including driving shaft B21, the driving shaft B21 with the driving shaft A11.The master
Moving axis B21 is connected with the input terminal of normally open clutch B5, and the output terminal of the clutch B5 is connected with jackshaft 7, in described
Countershaft 7 is arranged in parallel with the driven shaft 31, and even numbers gear is provided between the jackshaft 7 and the driven shaft 31,
It can be 2,4,6,8,10 etc..But it is in the present embodiment, 4 between the jackshaft 7 and the driven shaft 31
A gear, the gear Z114 being respectively set on the jackshaft 7, and gear Z114 meshed gears Z215, with institute
Gear Z215 meshed gears Z316 are stated, and gear Z316 meshed gears Z417, and the gear Z417 is installed in institute
It states on driven shaft 31.The rotary power of the input terminal B2 is transferred to by clutch B5 on the jackshaft 7, during drive is described
Gear Z114 rotations and realization jackshaft 7 on countershaft 7 and jackshaft 7 rotate in same direction with driving shaft B21 and gear Z114；It is described
Gear Z114 and gear Z152 engaged transmissions on jackshaft 7, realize that the gear Z215 and gear Z114 is rotated backward；
The gear Z215 drives the gear Z316 to rotate, and realizes that the gear Z316 and gear Z215 is rotated backward, i.e., described tooth
The wheel Z316 and input terminal B2 rotates in same direction；The gear Z316 drives the gear Z417 to rotate, at the same drive it is described from
Moving axis 31 rotates, and realizes gear Z417 and driven shaft and is rotated backward with gear Z316, i.e., described driven shaft 31 and the input
End B2 is rotated backward.It completes and reverses gear.
And gearshift 6 is provided between the clutch A4 and clutch B5, the gearshift 6 includes gearshift and puts
Arm 61 and the drive shaft 62 of driving gearshift swing arm 61, the both ends of the gearshift swing arm 61 are opposite with clutch A4 and clutch B5,
When rotating the drive shaft 62 manually, it may be such that gearshift swing arm 61 carries out down the platen of the clutch A4 or clutch B5
Pressure, makes its work.When the gearshift swing arm 61 pushes the platen of clutch A4, the clutch A4 work is described
Output terminal 3 is forward gear to rotate forward；When the gearshift swing arm 61 pushes the platen of clutch B5, the clutch
B5 works, and the output terminal 3 is reversion, to reverse gear.
A kind of mini-tiller of the gear including the present embodiment, wherein above-mentioned gear is as auxiliary transmission, it is defeated
Enter to hold the output terminal of A, input terminal B and main-gear box to be connected by belt, realize and rotate synchronously.
A kind of harvester of the gear including the present embodiment, wherein above-mentioned gear is as auxiliary transmission, it is defeated
Enter to hold the output terminal of A, input terminal B and main-gear box to be connected by belt, realize and rotate synchronously.
Using the gear and mini-tiller and harvester of the present embodiment, it can realize forward gear and what is reversed gear quickly cuts
It changes, it is only necessary to can just complete within 0.8 second, drastically increase shift speed.But also the abrasion of gear can be reduced, improve mechanism
Service life, and ensure the reliability of gearshift.So that gearshift（Forward gear is with reversing gear）Success rate reaches 100%.
In addition, the harvester of the present embodiment can improve harvesting efficiency 17%, mini-tiller can improve farming efficiency 17%.
Embodiment 3：As shown in Figs. 1-3, a kind of gear, including input terminal and output terminal, the input terminal is two
And rotate synchronously, one of input terminal A1 drives the output terminal 3 to rotate forward, another input terminal B2 drives the output terminal 3
Reversion.
Wherein, the input terminal A1 include driving shaft A11, the output terminal 3 include driven shaft 31, the input terminal A1 with
The input terminal connection of normally open clutch A4, the output terminal of the clutch A4 are directly connected to the driven shaft 31.The input
The rotary power of A11 is held to be transferred to output terminal 3 by clutch A4, realization input terminal A1 rotates in same direction with the output terminal 3.
Complete forward gear.
The input terminal B2 is arranged in parallel including driving shaft B21, the driving shaft B21 with the driving shaft A11.The master
Moving axis B21 is connected with the input terminal of normally open clutch B5, and the output terminal of the clutch B5 is connected with jackshaft 7, in described
Countershaft 7 is arranged in parallel with the driven shaft 31, and even numbers gear is provided between the jackshaft 7 and the driven shaft 31,
It can be 2,4,6,8,10 etc..But it is in the present embodiment, 4 between the jackshaft 7 and the driven shaft 31
A gear, the gear Z1 being respectively set on the jackshaft 7, and gear Z1 meshed gears Z2, with the gear
Z2 meshed gears Z3, and gear Z3 meshed gears Z4, and the gear Z4 is installed on the driven shaft.It is described defeated
Enter to hold the rotary power of B to be transferred to by clutch B5 on the jackshaft 7, drive the tooth on the jackshaft 7 and jackshaft
Wheel Z1 rotates and realizes that jackshaft rotates in same direction with driving shaft B and gear Z1；Gear Z1 and the gear on the jackshaft
Z2 engaged transmissions realize that the gear Z2 and gear Z1 is rotated backward；The gear Z2 drives the gear Z3 to rotate, and realizes tooth
The wheel Z3 and gear Z2 is rotated backward, i.e., the described gear Z3 and input terminal B rotates in same direction；Described in the gear Z3 drives
Gear Z4 is rotated, while the driven shaft is driven to rotate, and is realized gear Z4 and driven shaft and is rotated backward with gear Z3, i.e., described
Driven shaft 31 is rotated backward with the input terminal B2.It completes and reverses gear.
And gearshift 6 is provided between the clutch A4 and clutch B5, the gearshift 6 includes gearshift and puts
Arm 61 and the shifting shaft 62 of driving gearshift swing arm 61, the both ends of the gearshift swing arm 61 are opposite with clutch A4 and clutch B5,
And 61 both ends of the gearshift swing arm are both provided with opening, the jackshaft 7 and 31 activity of the driven shaft are located in the opening.
When rotating the shifting shaft 62 manually, pressure of the gearshift swing arm 61 to the clutch A4 or clutch B5 may be such that
Disk is pushed, and makes its work.When the gearshift swing arm 61 pushes the platen of clutch A4, the clutch A4 works
Make, the output terminal 3 is forward gear to rotate forward；It is described when the gearshift swing arm 61 pushes the platen of clutch B5
Clutch B5 works, and the output terminal 3 is reversion, to reverse gear.
In addition, a gear is also additionally arranged between the gear, i.e. pitch wheel Z5 and gear Z6, the tooth
Wheel Z5 and gear Z1 is the different duplex-gear of the number of teeth, is slidably installed in by spline on the jackshaft；The gear Z6 and the tooth
Wheel Z2 is installed on same gear shaft, and certain gear Z6 and gear Z2 is alternatively duplex-gear, but the gear Z6 with it is described
Axial spacing between gear Z2 is more than the axial spacing between the gear Z5 and the gear Z1, and the gear Z6 and tooth
It takes turns Z2 to be fixedly installed with its gear shaft, the gear Z3 is also fixedly installed with its gear shaft, and the Z4 is also installed in described driven
On axis.Moreover, being provided with shifting fork mechanism 8 between the gear Z1 and gear Z5, the shifting fork mechanism 8 can be stirred described double
Connection tooth causes gear Z1 to be engaged with gear Z2, at this point, drive path is gear Z1 → gear Z2 → gear Z3 → gear Z4；When dial
Fork mechanism 8 stirs the duplex-gear and gear Z5 is engaged with gear Z6, at this point, drive path is gear Z5 → gear Z6 → tooth
Take turns Z3 → gear Z4.
The gear further includes left box body 9 and right case 10, and the driving shaft A11 passes through with the driving shaft B21
Bearing portions is arranged in the right case 10, partly stretches out the right case 10.The clutch A4 and clutch B5
It is arranged in the right case 10, one end of the driven shaft 31 and the jackshaft 7 is arranged on the left box body 9 by bearing
On, and the left box body 9 is stretched out in 31 part of the driven shaft, the gear shaft of the gear shaft of the gear Z2 and the gear Z3 lead to
Bearing is crossed to be arranged in the left box body 9.62 one end of shifting shaft of the gearshift 6 is stretched out outside gearbox body, and is passed through and turned
Axis or pinboard are connected to gear level.
The shifting fork mechanism 8 includes the shift fork 81 being arranged between the gear Z1 and the gear Z2, the shift fork 81
Shift fork axle 82 is connected with, described 82 one end of shift fork axle is stretched out the left box body 9 and is connected with striking gear.
A kind of mini-tiller of the gear including the present embodiment, wherein above-mentioned gear is as auxiliary transmission, it is defeated
Enter to hold and be all arranged with drive 12 on the driving shaft A11 of A1, the driving shaft B21 of input terminal B2, pass through the output with main-gear box
Runner belt 13 on axis connects, and realizes and rotates synchronously.
A kind of mini-tiller of the gear including the present embodiment, wherein above-mentioned gear is as auxiliary transmission, it is defeated
Enter to hold and be all arranged with runner on the driving shaft A11 of A1, the driving shaft B21 of input terminal B2, by the output shaft 1 with main-gear box
Runner belt 13 connect, realize rotate synchronously.
Using the gear and mini-tiller and harvester of the present embodiment, it can realize forward gear and what is reversed gear quickly cuts
It changes, it is only necessary to can just complete within 0.8 second, drastically increase shift speed.But also the abrasion of gear can be reduced, improve mechanism
Service life, and ensure the reliability of gearshift.So that gearshift（Forward gear is with reversing gear）Success rate reaches 100%.
In addition, the harvester of the present embodiment can improve harvesting efficiency 18%, mini-tiller can improve farming efficiency 18%.
Claims (13)
1. a kind of gearbox, including input terminal and output terminal, it is characterised in that：The input terminal is two and rotates synchronously,
In an input terminal A（1）Drive the output terminal（3）It rotates forward, another input terminal B（2）Drive the output terminal（3）Reversion；
The input terminal A（1）Pass through clutch A（4）With the output terminal（3）It is connected；The input terminal B（2）With clutch B（5）It is defeated
Enter end to be connected, the clutch B（5）Output terminal through even numbers gear and the output terminal（3）It is connected；In the clutch A
（4）With the clutch B（5）Between be provided with gearshift（6）.
2. gearbox as described in claim 1, it is characterised in that：The input terminal A（1）Including driving shaft A（11）, it is described defeated
Outlet（3）Including driven shaft（31）, the driving shaft A（11）With the clutch A（4）Input terminal connection, the clutch A
（4）Output terminal and the driven shaft（31）Connection.
3. gearbox as claimed in claim 2, it is characterised in that：The input terminal B（2）Including driving shaft B（21）, described
Driving shaft B（21）With the clutch B（5）Input terminal connection, the clutch B（5）Output terminal be connected with jackshaft
（7）, the jackshaft（7）With the driven shaft（31）It is arranged in parallel, in the jackshaft（7）With the driven shaft（31）Between
It is provided with even numbers gear.
4. gearbox as claimed in claim 3, it is characterised in that：The jackshaft（7）Output terminal be arranged with gear Z1
（14）, the gear Z1（14）With gear Z2（15）Engagement, the gear Z2（15）With the gear Z3（16）Engagement, the tooth
Take turns Z3（16）With the driven shaft（31）Upper fixed gear Z4（17）Engagement.
5. gearbox as claimed in claim 4, it is characterised in that：Further include gear Z5（18）, the gear Z1（14）And tooth
Take turns Z5（18）For the different duplex-gear of the number of teeth, the jackshaft is slidably installed in by spline（7）On；Further include gear Z6（19）, institute
State gear Z6（19）With the gear Z2（15）It is installed on same gear shaft, the gear Z5（18）With the gear Z6（19）
It is engaged, in the gear Z1（14）With gear Z5（18）Between be provided with shifting fork mechanism（8）.
6. gearbox as claimed in claim 5, it is characterised in that：Further include left box body（9）And right case（10）, the active
Axis A（11）With the driving shaft B（21）The right case is arranged on by bearing portions（10）It is interior, the clutch A（4）And institute
State clutch B（5）It is arranged on the right case（10）It is interior, the driven shaft（31）With the jackshaft（7）One end pass through axis
It holds and is arranged on the left box body（9）On, the gear shaft of the gear shaft of the gear Z2 and the gear Z3 are arranged on by bearing
The left box body（9）It is interior.
7. such as gearbox described in claim 5 or 6, it is characterised in that：The shifting fork mechanism（8）Including being arranged on the gear
Shift fork between Z1 and the gear Z5（81）, the shift fork（81）It is connected with shift fork axle（82）, the shift fork axle（82）One end
It stretches out left box body and is connected with striking gear.
8. the gearbox as described in claim 3,4,5 or 6, it is characterised in that：The gearshift（6）Including swing arm of shifting gears
（61）, the gearshift swing arm（61）Middle part be fixedly connected with shifting shaft（62）, the shifting shaft（62）Right case is stretched out in one end
（10）, the shifting shaft（62）The gearshift swing arm can be driven（61）It swings, the gearshift swing arm（61）Both ends are respectively acting on
The clutch A（4）With the clutch B（5）, the clutch A（4）With the clutch B（5）For normally open clutch.
9. gearbox as claimed in claim 7, it is characterised in that：The gearshift（6）Including swing arm of shifting gears（61）, it is described
Gearshift swing arm（61）Middle part be fixedly connected with shifting shaft（62）, the shifting shaft（62）Right case is stretched out in one end（10）, it is described
Shifting shaft（62）The gearshift swing arm can be driven（61）It swings, the gearshift swing arm（61）Both ends are respectively acting on the clutch
A（4）With the clutch B（5）, the clutch A（4）With the clutch B（5）For normally open clutch.
10. gearbox as claimed in claim 8, it is characterised in that：In the driving shaft A（11）With the driving shaft B（21）
Input terminal be arranged with rotating wheel respectively（12）, in the rotating wheel（12）On be arranged with belt（13）, and the belt（13）
Also it is connected with driving wheel.
11. gearbox as claimed in claim 9, it is characterised in that：In the driving shaft A（11）With the driving shaft B（21）
Input terminal be arranged with rotating wheel respectively（12）, in the rotating wheel（12）On be arranged with belt（13）, and the belt（13）
Also it is connected with driving wheel.
12. a kind of harvester, including the gearbox described in any of the above-described claim, the gearbox as auxiliary transmission,
Its input terminal is driven by the output terminal of main-gear box.
13. a kind of mini-tiller, including the gearbox any one of claim 1-11, the gearbox is as secondary speed change
Case, input terminal are driven by the output terminal of main-gear box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720658758.3U CN207443385U (en) | 2017-06-08 | 2017-06-08 | A kind of harvester, mini-tiller and its gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720658758.3U CN207443385U (en) | 2017-06-08 | 2017-06-08 | A kind of harvester, mini-tiller and its gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207443385U true CN207443385U (en) | 2018-06-05 |
Family
ID=62246391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720658758.3U Expired - Fee Related CN207443385U (en) | 2017-06-08 | 2017-06-08 | A kind of harvester, mini-tiller and its gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207443385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107148821A (en) * | 2017-06-08 | 2017-09-12 | 重庆万虎农机有限公司 | A kind of harvester, mini-tiller and its gearbox |
-
2017
- 2017-06-08 CN CN201720658758.3U patent/CN207443385U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107148821A (en) * | 2017-06-08 | 2017-09-12 | 重庆万虎农机有限公司 | A kind of harvester, mini-tiller and its gearbox |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 Termination date: 20190608 |
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| CF01 | Termination of patent right due to non-payment of annual fee |