CN203884151U - Rotary blade shaft - Google Patents
Rotary blade shaft Download PDFInfo
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- CN203884151U CN203884151U CN201420327286.XU CN201420327286U CN203884151U CN 203884151 U CN203884151 U CN 203884151U CN 201420327286 U CN201420327286 U CN 201420327286U CN 203884151 U CN203884151 U CN 203884151U
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Abstract
The utility model relates to a rotary blade shaft which comprises a rotary blade rotating shaft. The rotary blade rotating shaft is provided with a plurality of rotary blade supports, the rotary blade supports are provided with rotary blades, the length of the rotary blade rotating shaft is not smaller than 1780 mm, the outer diameter of the rotary blade rotating shaft is not smaller than 80 mm, the density of the rotary blades installed on the rotary blade shaft is not smaller than 28 pieces per meter in the axial direction, each rotary blade is provided with a blade arm, the rotary blades include bent-arm rotary blades and straight-arm rotary blades, the two bent-arm rotary blades are installed at the two ends of the rotary blade rotating shaft respectively, the other rotary blades are the straight-arm rotary blades, the rotary blade supports are provided with installation grooves, and the blade arms of the rotary blades are inserted and fixed into the installation grooves of the rotary blade supports. The rotary blade shaft has the advantages that the rotary blade rotating shaft which is 1.8 meters long is adopted, the number of the rotary blades is large, the density of the rotary blades is high, the rotary blades are reasonably arranged, the middle of the rotary blade shaft is not provided with a supporting bearing, the tillage effect is not influenced, the tillage stability is good, the load of the rotary blade shaft is uniform, the area of land tilled each time is large and the tillage efficiency is high.
Description
Technical field
The utility model belongs to rotary cultivator device, relates in particular to a kind of rotary ploughing cutter shaft.
Background technology
Rotovator is important agricultural machinery, in agricultural modernization farming, has important function.The key feature of rotovator is the rotary ploughing cutter shaft that is provided with rotary blade, and the structure of rotary ploughing cutter shaft comprises the position distribution of rotary blade on rotary ploughing cutter shaft, and the operation effectiveness to rotovator and farming efficiency have decisive role.Adopt long rotary ploughing cutter shaft, high density rotary blade can improve the farming efficiency of rotovator, improve farming effect.Conventionally, in the time lengthening rotary ploughing cutter shaft, need to increase block bearing at the middle part of rotary ploughing cutter shaft, at block bearing place, rotary blade cannot be installed, substitute rotary blade with fixing the blade, operation effectiveness is affected.
Summary of the invention
The purpose of this utility model is the technical scheme that proposes a kind of rotary ploughing cutter shaft, increases length and the rotary blade quantity of rotary ploughing cutter shaft, improves farming efficiency.
To achieve these goals, the technical solution of the utility model is: a kind of rotary ploughing cutter shaft, comprise rotary blade rotating shaft, in described rotary blade rotating shaft, be provided with multiple rotary blade bearings, on rotary blade bearing, rotary blade is installed, the length of described rotary blade rotating shaft is not less than 1780mm, and the external diameter of rotary ploughing cutter shaft is not less than 80mm; The density of the described rotary blade of installing on rotary ploughing cutter shaft is not less than 28/meter vertically; Described rotary blade is provided with tool arm, and rotary blade comprises curved boom rotary blade and straight-arm rotary blade; Have two curved boom rotary blades to be arranged on respectively the two ends of rotary blade rotating shaft, all the other rotary blades are straight-arm rotary blade; Described rotary blade bearing is provided with mounting groove, and the tool arm of rotary blade is inserted and secured in the mounting groove of rotary blade bearing.
Further technical scheme is, the length of described rotary blade rotating shaft is 1792mm, and the external diameter of rotary ploughing cutter shaft is 80mm;
Described curved boom rotary blade comprises 1 left curved boom rotary blade and 1 right curved boom rotary blade; Described left curved boom rotary blade is provided with the tool arm of bending to the left, and the front end of left curved boom rotary blade is bending to the right; Described right curved boom rotary blade is provided with the tool arm of bending to the right, and the front end of right curved boom rotary blade is bending left;
In rotary blade rotating shaft, be provided with 50 described straight-arm rotary blades, straight-arm rotary blade comprises 25 left straight-arm rotary blades and 25 right straight-arm rotary blades, and described left straight-arm rotary blade and right straight-arm rotary blade are provided with straight shape tool arm; The front end of left straight-arm rotary blade is bending to the right, and the front end of described right straight-arm rotary blade is bending left;
Every rotary blade is provided with unique numbering, and described number order is No. 01, No. 02, No. 03 ... No. 52; 52 rotary blade ascending axially order arrangements from left to right along rotary blade rotating shaft by number; Described left and right directions is that the direction of travel when the farming is observed the position that rotary blade rotating shaft is seen along rotary blade rotating shaft;
Wherein, No. 01 and No. 02 rotary blade are arranged on the left end of rotary blade rotating shaft, No. 51 and No. 52 rotary blades are arranged on the right-hand member of rotary blade rotating shaft, No. 09 and No. 10 rotary blades are positioned at axial location identical in rotary blade rotating shaft, No. 17 and No. 18 rotary blades are positioned at axial location identical in rotary blade rotating shaft, No. 26 and No. 27 rotary blades are positioned at axial location identical in rotary blade rotating shaft, No. 35 and No. 36 rotary blades are positioned at axial location identical in rotary blade rotating shaft, and No. 43 and No. 44 rotary blades are positioned at axial location identical in rotary blade rotating shaft;
No. 01 rotary blade is left curved boom rotary blade, and No. 52 rotary blades are right curved boom rotary blade; No. 02, No. 03, No. 04, No. 05, No. 10, No. 11, No. 12, No. 13, No. 18, No. 19, No. 20, No. 21, No. 22, No. 27, No. 28, No. 29, No. 30, No. 36, No. 37, No. 38, No. 39, No. 44, No. 45, No. 46, No. 47 rotary blades are left straight-arm rotary blade; No. 06, No. 07, No. 08, No. 09, No. 14, No. 15, No. 16, No. 17, No. 23, No. 24, No. 25, No. 26, No. 31, No. 32, No. 33, No. 34, No. 35, No. 40, No. 41, No. 42, No. 43, No. 48, No. 49, No. 50, No. 51 rotary blades are right straight-arm rotary blade.
52 rotary blades distribute along the circumferencial direction of rotary blade rotating shaft etc. point, observe from the left side of rotary blade rotating shaft, 52 rotary blades along the order of the clockwise decile distribution of circumferencial direction of rotary blade rotating shaft are: No. 01, No. 52, No. 26, No. 12, No. 41, No. 20, No. 33, No. 04, No. 49, No. 16, No. 37, No. 08, No. 45, No. 23, No. 29, No. 14, No. 39, No. 05, No. 48, No. 18, No. 35, No. 10, No. 43, No. 22, No. 31, No. 02, No. 51, No. 19, No. 38, No. 15, No. 28, No. 07, No. 46, No. 25, No. 32, No. 11, No. 42, No. 03, No. 50, No. 27, No. 17, No. 36, No. 09, No. 44, No. 24, No. 30, No. 13, No. 40, No. 06, No. 47, No. 21, No. 34,
Further, described rotary blade rotating shaft is hollow shaft, and the wall thickness of rotary blade rotating shaft is 7mm; Two ends in rotary blade rotating shaft are provided with adpting flange.
Further, the radius of turn on described rotary blade top is 250mm.
The beneficial effects of the utility model are: adopt 1.8 meters of long rotary ploughing cutter shafts, rotary blade quantity is many, and density is high, arrange rationally, in the middle of rotary ploughing cutter shaft, do not establish block bearing, do not affect farming effect; Tillage stability is good, and evenly, single farming area is large for cutter shaft load, and farming efficiency is high.
Below in conjunction with drawings and Examples, the utility model is described in detail.
Brief description of the drawings
Fig. 1 is the utility model structure chart, and in figure, A represents that direction of rotation, B are the direction of travel of rotary blade rotating shaft in the time of farming;
Fig. 2 is the utility model rotary blade pivot structure figure;
Fig. 3 is the local broken away view of the utility model, clear for view, only draws part rotary blade;
Fig. 4 is the utility model rotary tillage cutter holder and rotary blade position view, and the numbering of the numbering statement rotary tillage cutter holder in figure, installs left curved boom rotary blade or left straight-arm rotary blade with the location mark of ※ in figure, and in figure, A represents direction of rotation;
Fig. 5 is straight-arm rotary blade front view, taking right straight-arm rotary blade as object; Left straight-arm rotary blade and right straight-arm rotary blade have symmetrical structure;
Fig. 6 is that the C of Fig. 5 is to view;
Fig. 7 is curved boom rotary blade front view, taking right curved boom rotary blade as object; Left curved boom rotary blade and right curved boom rotary blade have symmetrical structure;
Fig. 8 is that the F of Fig. 7 is to view.
Embodiment
A kind of rotary ploughing cutter shaft, comprises rotary blade rotating shaft, is provided with multiple rotary blade bearings in described rotary blade rotating shaft, on rotary blade bearing, rotary blade is installed, and the length of described rotary blade rotating shaft is not less than 1780mm, and the external diameter of rotary ploughing cutter shaft is not less than 80mm; The density of the described rotary blade of installing on rotary ploughing cutter shaft is not less than 28/meter vertically; Described rotary blade is provided with tool arm, and rotary blade comprises curved boom rotary blade and straight-arm rotary blade; Have two curved boom rotary blades to be arranged on respectively the two ends of rotary blade rotating shaft, all the other rotary blades are straight-arm rotary blade; Described rotary blade bearing is provided with mounting groove, and the tool arm of rotary blade is inserted and secured in the mounting groove of rotary blade bearing.
Embodiment mono-:
As shown in Figure 1, Figure 2, Fig. 3, Fig. 4, a kind of rotary ploughing cutter shaft, comprises rotary blade rotating shaft 100, described rotary blade rotating shaft is hollow shaft, the external diameter of rotary ploughing cutter shaft is D=80mm, the wall thickness of rotary blade rotating shaft is 7mm; The length of described rotary blade rotating shaft is L=1792mm; Be provided with adpting flange 101 at the two ends of rotary blade rotating shaft.
To be provided with 52 rotary blades in rotary blade rotating shaft, on the external diameter of rotary blade rotating shaft, be provided with 52 with described rotary blade corresponding rotary blade bearing one by one, described rotary blade bearing is provided with the mounting groove 102 for described rotary blade is installed, each rotary blade bearing is provided with unique numbering, described in be numbered No. 01, No. 02, No. 03 ... No. 52 (label is in the drawings 01,02,03 ... 52); 52 rotary blades are also defined as the numbering identical with corresponding rotary blade bearing.
Comprise 2 curved boom rotary blade bearings that are arranged on rotary blade rotating shaft two ends at 52 rotary blade bearings, described curved boom rotary blade bearing is provided with the described mounting groove corresponding with the tool arm of curved boom rotary blade, and 2 described curved boom rotary blade bearings are numbered No. 01 and No. 52; No. 01 curved boom rotary blade bearing is arranged on the left end of rotary blade rotating shaft, and No. 52 curved boom rotary blade bearings are arranged on the right-hand member of rotary blade rotating shaft;
Comprise 50 straight-arm rotary blade bearings at 52 rotary blade bearings, described straight-arm rotary blade bearing is provided with the mounting groove corresponding with the tool arm of straight-arm rotary blade, being numbered No. 02 to No. 51 of 50 described straight-arm rotary blade bearings; 50 straight-arm rotary blade bearing ascending axially order arrangements from left to right along rotary blade rotating shaft by number; Wherein No. 02 and No. 51 straight-arm rotary blade bearings are arranged on the two ends of rotary blade rotating shaft, No. 09 and No. 10 straight-arm rotary blade bearings are positioned at axial location identical in rotary blade rotating shaft, No. 17 and No. 18 straight-arm rotary blade bearings are positioned at axial location identical in rotary blade rotating shaft, No. 26 and No. 27 straight-arm rotary blade bearings are positioned at axial location identical in rotary blade rotating shaft, No. 35 and No. 36 straight-arm rotary blade bearings are positioned at axial location identical in rotary blade rotating shaft, and No. 43 and No. 44 straight-arm rotary blade bearings are positioned at axial location identical in rotary blade rotating shaft;
Described left and right directions is to observe along rotary blade rotating shaft direction of travel B when the farming position that rotary blade rotating shaft is seen;
The distance L 1=20.5mm of the mid point of No. 01 curved boom rotary blade bearing and rotary blade rotating shaft left end,
The distance L 2=19.5mm of the mid point of No. 02 straight-arm rotary blade bearing and rotary blade rotating shaft left end,
No. 02 the axial spacing in rotary blade rotating shaft is L3=40.7mm with No. 03 straight-arm rotary blade bearing, No. 50 the axial spacing in rotary blade rotating shaft is L3=40.7mm with No. 51 straight-arm rotary blade bearings, and the axial spacing of all the other straight-arm rotary blade bearings in rotary blade rotating shaft is L4=39.8mm;
52 rotary blade bearings distribute along the circumferencial direction of rotary blade rotating shaft etc. point, observe from the left side of rotary blade rotating shaft, the order that rotary blade bearing distributes clockwise along the circumferencial direction of rotary blade rotating shaft is: No. 01, No. 52, No. 26, No. 12, No. 41, No. 20, No. 33, No. 04, No. 49, No. 16, No. 37, No. 08, No. 45, No. 23, No. 29, No. 14, No. 39, No. 05, No. 48, No. 18, No. 35, No. 10, No. 43, No. 22, No. 31, No. 02, No. 51, No. 19, No. 38, No. 15, No. 28, No. 07, No. 46, No. 25, No. 32, No. 11, No. 42, No. 03, No. 50, No. 27, No. 17, No. 36, No. 09, No. 44, No. 24, No. 30, No. 13, No. 40, No. 06, No. 47, No. 21, No. 34,
Described curved boom rotary blade comprises that 1 left curved boom rotary blade 201(rotary blade is numbered No. 01) and 1 right curved boom rotary blade 202(rotary blade be numbered No. 52); Described left curved boom rotary blade is provided with to the left the tool arm of bending, and the front end of left curved boom rotary blade is bending to the right, and the tool arm of left curved boom rotary blade inserts in the mounting groove of No. 01 curved boom rotary blade bearing, is fixed in rotary blade rotating shaft; Described right curved boom rotary blade is provided with to the right the tool arm of bending, and the front end of right curved boom rotary blade is bending left, and the tool arm of right curved boom rotary blade inserts in the mounting groove of No. 52 curved boom rotary blade bearings, is fixed in rotary blade rotating shaft;
Described straight-arm rotary blade comprises 203 and 25 right straight-arm rotary blades 204 of 25 left straight-arm rotary blades, and described left straight-arm rotary blade and right straight-arm rotary blade are provided with straight shape tool arm; The front end of left straight-arm rotary blade is bending to the right, and left straight-arm rotary blade is arranged on No. 02, No. 03, No. 04, No. 05, No. 10, No. 11, No. 12, No. 13, No. 18, No. 19, No. 20, No. 21, No. 22, No. 27, No. 28, No. 29, No. 30, No. 36, No. 37, No. 38, No. 39, No. 44, No. 45, No. 46, No. 47 straight-arm rotary blade bearings; The front end of described right straight-arm rotary blade is bending left, and right straight-arm rotary blade is arranged on No. 06, No. 07, No. 08, No. 09, No. 14, No. 15, No. 16, No. 17, No. 23, No. 24, No. 25, No. 26, No. 31, No. 32, No. 33, No. 34, No. 35, No. 40, No. 41, No. 42, No. 43, No. 48, No. 49, No. 50, No. 51 straight-arm rotary blade bearings; The tool arm of left straight-arm rotary blade and right straight-arm rotary blade inserts in the mounting groove of straight-arm rotary blade bearing, is fixed in rotary blade rotating shaft.Every straight-arm rotary tillage cutter has identical numbering with installed rotary blade bearing.
As Fig. 5, Fig. 6, Fig. 7, Fig. 8, the radius of turn on described rotary blade top is R=250mm; The blade arc radius R1=162mm of rotary blade; The width D 1=5mm on rotary blade top; The angle of bend A1=62 ° of rotary blade front end; The radius of curvature R 2=70mm of rotary blade front end; The bending displacement D2=45mm on rotary blade top.
As shown in Figure 5, Figure 6, the thickness D3=10mm of straight-arm rotary blade tool arm; The width D 4=25.4mm of straight-arm rotary blade tool arm.
As shown in Figure 7, Figure 8, the thickness D5=12mm of curved boom rotary blade tool arm; The width D 6=32mm of curved boom rotary blade tool arm, the bending displacement D7=30mm of curved boom rotary blade tool arm.
In the utility model, 52 rotary blade bearings distribute along the circumferencial direction of rotary blade rotating shaft etc. point, in the process that rotary ploughing cutter shaft rotates a circle, only have a rotary blade to bury at same phase angle, ensure tillage stability, and cutter shaft load evenly.
The rotary blade in succession burying, is no less than 6 rotary blade bearing intervals in axial distance, has enough width to prevent to stop up.
The quantity of left curved boom rotary blade and right curved boom rotary blade equates, cutter hub shape symmetry; The quantity of left straight-arm rotary blade and right straight-arm rotary blade equates, cutter head shape symmetry; And left straight-arm rotary blade and right straight-arm rotary blade are staggered, and make axle two ends stress equalization.
The utlity model has higher rotary blade packing density, be suitable for the meticulous farming in field.
Claims (4)
1. a rotary ploughing cutter shaft, comprises rotary blade rotating shaft, is provided with multiple rotary blade bearings in described rotary blade rotating shaft, on rotary blade bearing, rotary blade is installed, it is characterized in that, the length of described rotary blade rotating shaft is not less than 1780mm, and the external diameter of rotary ploughing cutter shaft is not less than 80mm; The density of the described rotary blade of installing on rotary ploughing cutter shaft is not less than 28/meter vertically; Described rotary blade is provided with tool arm, and rotary blade comprises curved boom rotary blade and straight-arm rotary blade; Have two curved boom rotary blades to be arranged on respectively the two ends of rotary blade rotating shaft, all the other rotary blades are straight-arm rotary blade; Described rotary blade bearing is provided with mounting groove, and the tool arm of rotary blade is inserted and secured in the mounting groove of rotary blade bearing.
2. a kind of rotary ploughing cutter shaft according to claim 1, is characterized in that, the length of described rotary blade rotating shaft is 1792mm, and the external diameter of rotary ploughing cutter shaft is 80mm;
Described curved boom rotary blade comprises 1 left curved boom rotary blade and 1 right curved boom rotary blade; Described left curved boom rotary blade is provided with the tool arm of bending to the left, and the front end of left curved boom rotary blade is bending to the right; Described right curved boom rotary blade is provided with the tool arm of bending to the right, and the front end of right curved boom rotary blade is bending left;
In rotary blade rotating shaft, be provided with 50 described straight-arm rotary blades, straight-arm rotary blade comprises 25 left straight-arm rotary blades and 25 right straight-arm rotary blades, and described left straight-arm rotary blade and right straight-arm rotary blade are provided with straight shape tool arm; The front end of left straight-arm rotary blade is bending to the right, and the front end of described right straight-arm rotary blade is bending left;
Every rotary blade is provided with unique numbering, and described number order is No. 01, No. 02, No. 03 ... No. 52; 52 rotary blade ascending axially order arrangements from left to right along rotary blade rotating shaft by number; Described left and right directions is that the direction of travel when the farming is observed the position that rotary blade rotating shaft is seen along rotary blade rotating shaft;
Wherein, No. 01 and No. 02 rotary blade are arranged on the left end of rotary blade rotating shaft, No. 51 and No. 52 rotary blades are arranged on the right-hand member of rotary blade rotating shaft, No. 09 and No. 10 rotary blades are positioned at axial location identical in rotary blade rotating shaft, No. 17 and No. 18 rotary blades are positioned at axial location identical in rotary blade rotating shaft, No. 26 and No. 27 rotary blades are positioned at axial location identical in rotary blade rotating shaft, No. 35 and No. 36 rotary blades are positioned at axial location identical in rotary blade rotating shaft, and No. 43 and No. 44 rotary blades are positioned at axial location identical in rotary blade rotating shaft;
No. 01 rotary blade is left curved boom rotary blade, and No. 52 rotary blades are right curved boom rotary blade; No. 02, No. 03, No. 04, No. 05, No. 10, No. 11, No. 12, No. 13, No. 18, No. 19, No. 20, No. 21, No. 22, No. 27, No. 28, No. 29, No. 30, No. 36, No. 37, No. 38, No. 39, No. 44, No. 45, No. 46, No. 47 rotary blades are left straight-arm rotary blade; No. 06, No. 07, No. 08, No. 09, No. 14, No. 15, No. 16, No. 17, No. 23, No. 24, No. 25, No. 26, No. 31, No. 32, No. 33, No. 34, No. 35, No. 40, No. 41, No. 42, No. 43, No. 48, No. 49, No. 50, No. 51 rotary blades are right straight-arm rotary blade;
52 rotary blades distribute along the circumferencial direction of rotary blade rotating shaft etc. point, observe from the left side of rotary blade rotating shaft, 52 rotary blades along the order of the clockwise decile distribution of circumferencial direction of rotary blade rotating shaft are: No. 01, No. 52, No. 26, No. 12, No. 41, No. 20, No. 33, No. 04, No. 49, No. 16, No. 37, No. 08, No. 45, No. 23, No. 29, No. 14, No. 39, No. 05, No. 48, No. 18, No. 35, No. 10, No. 43, No. 22, No. 31, No. 02, No. 51, No. 19, No. 38, No. 15, No. 28, No. 07, No. 46, No. 25, No. 32, No. 11, No. 42, No. 03, No. 50, No. 27, No. 17, No. 36, No. 09, No. 44, No. 24, No. 30, No. 13, No. 40, No. 06, No. 47, No. 21, No. 34.
3. a kind of rotary ploughing cutter shaft according to claim 2, is characterized in that, described rotary blade rotating shaft is hollow shaft, and the wall thickness of rotary blade rotating shaft is 7mm; Two ends in rotary blade rotating shaft are provided with adpting flange.
4. a kind of rotary ploughing cutter shaft according to claim 2, is characterized in that, the radius of turn on described rotary blade top is 250mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420327286.XU CN203884151U (en) | 2014-06-19 | 2014-06-19 | Rotary blade shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420327286.XU CN203884151U (en) | 2014-06-19 | 2014-06-19 | Rotary blade shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203884151U true CN203884151U (en) | 2014-10-22 |
Family
ID=51710622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420327286.XU Expired - Fee Related CN203884151U (en) | 2014-06-19 | 2014-06-19 | Rotary blade shaft |
Country Status (1)
| Country | Link |
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| CN (1) | CN203884151U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109804740A (en) * | 2019-04-08 | 2019-05-28 | 西华大学 | A kind of hand-held double-vane ploughshare formula ditching machine |
| CN110036709A (en) * | 2018-01-16 | 2019-07-23 | 西南科技大学 | A kind of rotary blade for preventing and treating sloping upland tillage erosion |
| CN110089221A (en) * | 2019-04-24 | 2019-08-06 | 南县伟业机械制造有限公司 | A kind of rotary tillage ferti-seeding all-in-one machine |
| CN110800392A (en) * | 2019-11-19 | 2020-02-18 | 华南农业大学 | High-pressure gas desorption and viscosity reduction rotary tillage cutter head, rotary cultivator and rotary tillage method of rotary cultivator |
-
2014
- 2014-06-19 CN CN201420327286.XU patent/CN203884151U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110036709A (en) * | 2018-01-16 | 2019-07-23 | 西南科技大学 | A kind of rotary blade for preventing and treating sloping upland tillage erosion |
| CN109804740A (en) * | 2019-04-08 | 2019-05-28 | 西华大学 | A kind of hand-held double-vane ploughshare formula ditching machine |
| CN109804740B (en) * | 2019-04-08 | 2021-11-26 | 西华大学 | Hand-held double-wing furrow-making machine |
| CN110089221A (en) * | 2019-04-24 | 2019-08-06 | 南县伟业机械制造有限公司 | A kind of rotary tillage ferti-seeding all-in-one machine |
| CN110800392A (en) * | 2019-11-19 | 2020-02-18 | 华南农业大学 | High-pressure gas desorption and viscosity reduction rotary tillage cutter head, rotary cultivator and rotary tillage method of rotary cultivator |
| CN110800392B (en) * | 2019-11-19 | 2021-03-16 | 华南农业大学 | High-pressure gas desorption and viscosity reduction rotary tillage cutter head, rotary cultivator and rotary tillage method of rotary cultivator |
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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: 20141022 Termination date: 20210619 |