CN105265043A - Farming machine for mountains - Google Patents
Farming machine for mountains Download PDFInfo
- Publication number
- CN105265043A CN105265043A CN201510820008.7A CN201510820008A CN105265043A CN 105265043 A CN105265043 A CN 105265043A CN 201510820008 A CN201510820008 A CN 201510820008A CN 105265043 A CN105265043 A CN 105265043A
- Authority
- CN
- China
- Prior art keywords
- rotary tillage
- walking
- cutter
- scimitar
- driver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B49/00—Combined machines
- A01B49/02—Combined machines with two or more soil-working tools of different kind
- A01B49/022—Combined machines with two or more soil-working tools of different kind at least one tool being actively driven
- A01B49/025—Combined machines with two or more soil-working tools of different kind at least one tool being actively driven about a substantially vertical axis
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B49/00—Combined machines
- A01B49/04—Combinations of soil-working tools with non-soil-working tools, e.g. planting tools
- A01B49/06—Combinations of soil-working tools with non-soil-working tools, e.g. planting tools for sowing or fertilising
- A01B49/065—Combinations of soil-working tools with non-soil-working tools, e.g. planting tools for sowing or fertilising the soil-working tools being actively driven
Abstract
The invention discloses a farming machine for mountains. The farming machine comprises a power machine arranged on a main frame, a road wheel is arranged below the main frame, the power machine is connected with a rotary tillage driver through a transmission mechanism, the rotation shaft of the rotary tillage driver drives a rotary tillage blade, the output shaft of the rotary tillage driver drives the road wheel through a transmission mechanism, the rotary tillage blade is disposed at the front end of the road wheel in a forward direction, a ploughshare is arranged between the rotary tillage blade and the road wheel, the main frame is provided with an armrest and a seeder, the road wheel drives the seeder to sow through a transmission mechanism, and the armrest is provided with a starting switch and a throttle controller of the power machine and a sowing brake for controlling the seeder. The farming machine for the mountains is small in volume, light in weight, low in cost and portable and flexible in operation. Besides, the farming machine employs the rotary tillage blade, weed twining is not easily caused, the rotary tillage is labor-saving, straw can also be returned to farms, and soil is enriched.
Description
[technical field]
The invention belongs to agricultural mechanical field, be specifically related to a kind of mountains and rivers farming machine.
[background technology]
At present, the farming machine kind both at home and abroad based on power is more, but the problem that ubiquity volume is large, heavy weight, cost are high, operating difficulties, adaptation to the ground are limited, be difficult to promote the use of in vast mountain area.
[summary of the invention]
The object of the invention is to overcome above-mentioned deficiency, a kind of mountains and rivers farming machine is provided, the problem that hilly and gullied area and mountain area are difficult to realize the mechanization of farm work can be solved.
In order to achieve the above object, the present invention includes mainframe, mainframe is provided with engine, road wheel is provided with below mainframe, engine connects rotary tillage driver by transmission mechanism, the rotating shaft of rotary tillage driver drives Rotary tillage blade, the output shaft of rotary tillage driver is by transmission mechanism ground-engaging wheel, Rotary tillage blade is positioned at the front end of road wheel direction of advance, ploughshare is provided with between Rotary tillage blade and road wheel, mainframe is provided with handrail and seeder, road wheel drives seeder sowing by transmission mechanism, handrail is provided with the starting switch of engine and the sowing lock of throttle control and control seeder.
Described rotary tillage driver comprises the power input shaft be connected with transmission mechanism, driven gear on driving gear engagement jackshaft on power input shaft, output gear on input gear engagement output shaft on jackshaft, output shaft is by transmission mechanism ground-engaging wheel, output shaft is provided with drive sprocket, drive sprocket is connected by chain with the rotary tillage sprocket wheel on rotating shaft, and the two ends of rotating shaft are fixed with Rotary tillage blade.
Described rotary tillage driver drives connection for transmission case by transmission mechanism, transmission case connected row travelling wheel;
Described transmission case comprises the walking power shaft be connected with rotary tillage driver output shaft by transmission mechanism, walking driving gear on power shaft engages with the walking driven gear on walking jackshaft, walking jackshaft is also provided with walking change-speed gearing, walking output shaft is provided with the quick gear of walking and walking low-gear, gear level control walking change-speed gearing and walking low-gear engagement or walk driven gear and walk quick gears meshing or make the quick gear of walking and walking low-gear be placed in walking change-speed gearing and walking driven gear between, the reference circle of quick gear of walking is less than the reference circle of walking low-gear, walking output shaft is provided with road wheel.
Described Rotary tillage blade comprises left folding inner edge scimitar cutter, inner edge scimitar cutter and right folding inner edge scimitar cutter, left folding inner edge scimitar cutter, inner edge scimitar cutter and right folding inner edge scimitar cutter include handle of a knife and cutter hub, cutter hub and handle of a knife composition sickle shaped, the inner side of cutter hub and handle of a knife all offers blade;
The cutter hub of described left folding inner edge scimitar cutter offsets to the left, and parallel with handle of a knife, and the cutter hub of right folding inner edge scimitar cutter offsets to the right, and parallel with handle of a knife.
Described left folding inner edge scimitar cutter and some inner edge scimitar cuttves are fixed on the side of the rotating shaft of rotary tillage driver by rotary tillage cover, right folding inner edge scimitar cutter and some inner edge scimitar cuttves are fixed on the opposite side of the rotating shaft of rotary tillage driver by rotary tillage cover, the cutter hub of left folding inner edge scimitar cutter and right folding inner edge scimitar cutter is all to bias internal.
Transmission mechanism between described engine and rotary tillage driver and the transmission mechanism between rotary tillage driver and road wheel are pulley transmission mechanism, and the transmission mechanism between road wheel and seeder is chain drive.
The output shaft of described engine connects clutch three horn ring, and the power input shaft connection of rotary tillage driver imports three horn rings into, by driving triangular belt transmission between clutch three horn ring and three horn rings;
The output shaft of described rotary tillage driver connects walking initiatively three horn rings, road wheel is connected by transmission mechanism with rotary tillage driver by transmission case, the walking power shaft of transmission case is provided with driven three horn rings of walking, walking initiatively three horn rings and driven three horn rings of walking to be walked V--belt Drive by transmission.
Described mainframe is provided with sowing frame, seeder is fixed on sowing frame, seeder is provided with sowing sprocket wheel, road wheel is provided with transmission case, the output shaft of transmission case is provided with sowing drive sprocket, sowing drive sprocket and sowing sprocket wheel are by sowing Chain conveyer.
Dust cover is provided with above described Rotary tillage blade;
Described ploughshare runs through mainframe, and top is provided with pin-and-hole, mainframe is provided with the shank matched with ploughshare top pin-and-hole.
Described mainframe is provided with can the armrest seat of adjusting angle, and handrail is fixed on armrest seat.
Compared with prior art, the present invention drives rotary tillage drive operation by engine, rotary tillage driver not only drives Rotary tillage blade to rotate, road wheel can also be driven to rotate, road wheel drives seeder work sowing, user only need by handrail controlling party to speed, this device volume is little, lightweight, cost is low, operation light and flexible, the Rotary tillage blade that this device adopts, not easily twine grass, rotary tillage is laborsaving, straw-returning can be made, enrich soil, this device passes through traction drive, Rotary tillage blade carries out rotary tillage, level land and hillside fields all can be cultivated, applicability is strong, row shape is shown after hillside field tillage, can preserve soil moisture, Topographic factor can be prevented again.
Further, the present invention is provided with gear level, can regulate the pace of this device.
Further; the present invention adopts left folding inner edge scimitar cutter, inner edge scimitar cutter and right folding inner edge scimitar cutter, and when rotary tillage, the weeds of not rubbing or balloonflower root can be stacked into handle of a knife and the junction with cutter hub; excessive resistance can not be brought to the running of this device, improve the operating efficiency of this device.
Further, the cutter hub of left folding inner edge scimitar cutter of the present invention and right folding inner edge scimitar cutter, all to bias internal, makes the distance between two cutter hubs close, can effectively prevent from balking.
Further, the present invention is provided with dust cover, the dust kicked up when can effectively prevent Rotary tillage blade from working.
Further, the present invention is provided with pin-and-hole at ploughshare top, can regulate the length of ploughshare, meet need of work.
Further, the present invention is provided with armrest seat, can the height of adjustable handrail, improves the comfort level of this device.
[accompanying drawing explanation]
Fig. 1 is structural representation of the present invention;
Fig. 2 is the transmission schematic diagram of rotary tillage driver of the present invention;
Fig. 3 is the structural representation of transmission case body of the present invention;
Fig. 4 is the transmission schematic diagram of transmission case of the present invention;
Fig. 5 is the structural representation of left folding inner edge scimitar cutter of the present invention;
Fig. 6 is the structural representation of inner edge scimitar cutter of the present invention;
Fig. 7 is the structural representation of right folding inner edge scimitar cutter of the present invention.
[embodiment]
Below in conjunction with accompanying drawing, the present invention will be further described.
See Fig. 1 to Fig. 7, the present invention includes mainframe 1, mainframe 1 is provided with engine 2, road wheel 27 is provided with below mainframe 1, engine 2 connects rotary tillage driver 6 by transmission mechanism, the rotating shaft 16 of rotary tillage driver 6 drives Rotary tillage blade 50, dust cover 25 is provided with above Rotary tillage blade 50, the output shaft 12 of rotary tillage driver 6 is by transmission mechanism ground-engaging wheel 27, Rotary tillage blade 50 is positioned at the front end of road wheel 27 direction of advance, ploughshare 39 is provided with between Rotary tillage blade 50 and road wheel 27, ploughshare 39 runs through mainframe 1, and top is provided with pin-and-hole, mainframe 1 is provided with the shank matched with ploughshare 39 top pin-and-hole, mainframe 1 is provided with sowing frame 44, seeder 42 is fixed on sowing frame 44, road wheel 27 drives seeder 42 to sow by transmission mechanism, mainframe 1 is provided with can the armrest seat 45 of adjusting angle, handrail 46 is fixed on armrest seat 45, handrail 46 is provided with the starting switch 47 of engine 2 and the sowing lock 49 of throttle control 48 and control seeder 42.
Rotary tillage driver 6 comprises the power input shaft 7 be connected with transmission mechanism, driving gear 8 on power input shaft 7 engages the driven gear 10 on jackshaft 9, input gear 11 on jackshaft 9 engages the output gear 13 on output shaft 12, output shaft 12 is by transmission mechanism ground-engaging wheel 27, output shaft 12 is provided with drive sprocket 15, drive sprocket 15 is connected by chain with the rotary tillage sprocket wheel 17 on rotating shaft 16, and the two ends of rotating shaft 16 are fixed with Rotary tillage blade 50.
Rotary tillage driver 6 drives connection for transmission case 28 by transmission mechanism, transmission case 28 connected row travelling wheel 27;
Transmission case 28 comprises the walking power shaft 31 be connected with rotary tillage driver 6 output shaft 12 by transmission mechanism, walking driving gear 32 on power shaft 31 engages with the walking driven gear 34 on walking jackshaft 33, walking jackshaft 33 is also provided with walking change-speed gearing 35, walking output shaft 36 is provided with the quick gear 37 of walking and walking low-gear 38, gear level 29 controls walking change-speed gearing 35 and walking low-gear 38 engage or walk driven gear 34 and quick gear 37 of walking and engages or make the quick gear 37 of walking and walking low-gear 38 to be placed between walking change-speed gearing 35 and walking driven gear 34, the reference circle of quick gear 37 of walking is less than the reference circle of walking low-gear 38, walking output shaft 36 is provided with road wheel 27.
Rotary tillage blade 50 comprises left folding inner edge scimitar cutter 20, inner edge scimitar cutter 24 and right folding inner edge scimitar cutter 22, left folding inner edge scimitar cutter 20, inner edge scimitar cutter 24 and right folding inner edge scimitar cutter 22 include handle of a knife and cutter hub, cutter hub and handle of a knife composition sickle shaped, the inner side of cutter hub and handle of a knife all offers blade; The cutter hub of left folding inner edge scimitar cutter 20 offsets to the left, and parallel with handle of a knife, and the cutter hub of right folding inner edge scimitar cutter 22 offsets to the right, and parallel with handle of a knife.
Left folding inner edge scimitar cutter 20 and some inner edge scimitar cuttves 24 are fixed on the side of the rotating shaft 16 of rotary tillage driver 6 by rotary tillage cover 18, right folding inner edge scimitar cutter 22 and some inner edge scimitar cuttves 24 are fixed on the opposite side of the rotating shaft 16 of rotary tillage driver 6 by rotary tillage cover 18, and the cutter hub of left folding inner edge scimitar cutter 20 and right folding inner edge scimitar cutter 22 is all to bias internal.
Transmission mechanism between engine 2 and rotary tillage driver 6 and the transmission mechanism between rotary tillage driver 6 and road wheel 27 are pulley transmission mechanism, and the transmission mechanism between road wheel 27 and seeder 42 is chain drive.
The output shaft of engine 2 connects clutch three horn ring 3, and power input shaft 7 connection of rotary tillage driver 6 imports three horn rings 5 into, by driving triangular belt 4 transmission between clutch three horn ring 3 and three horn rings 5;
The output shaft 12 of rotary tillage driver 6 connects walking initiatively three horn rings 14, road wheel 27 is connected by transmission mechanism with rotary tillage driver 6 by transmission case 28, the walking power shaft 31 of transmission case 28 is provided with driven three horn rings 30 of walking, walking initiatively three horn rings 14 and driven three horn rings 30 of walking to be walked V-belt 26 transmission by transmission.
Seeder 42 is provided with sowing sprocket wheel 43, the output shaft of transmission case 28 is provided with sowing drive sprocket 40, sowing drive sprocket 40 and sowing sprocket wheel 43 are by sowing chain 41 transmission.
During walking, shed the rotary tillage cover 18 on rotating shaft 16, unload Rotary tillage blade 50, improve ploughshare 39, the position that starting switch 47 is placed in out, throttle control 48 is lowerd, engage a gear bar 29 on operation transmission case body 28 is placed in neutral, start engine 2, engage a gear bar 29 is placed in fast shelves place, hold sowing lock 49, force down handrail 46, throttle a little, keeps balance by rotating driver 6, just can walk.
During work, Rotary tillage blade 50 is fixed on rotating shaft 16 by rotary tillage cover 18, turns down ploughshare 39, the position that starting switch 47 is placed in out, throttle control 48 is lowerd, engage a gear bar 29 on operation transmission case body 28 is placed in neutral, starts engine 2, engage a gear bar 29 is placed in slow shelves place, decontrol sowing lock 49, open the throttle, raise handrail 46, just can carry out rotary tillage and sowing.
Claims (10)
1. a mountains and rivers farming machine, it is characterized in that: comprise mainframe (1), mainframe (1) is provided with engine (2), mainframe (1) below is provided with road wheel (27), engine (2) connects rotary tillage driver (6) by transmission mechanism, the rotating shaft (16) of rotary tillage driver (6) drives Rotary tillage blade (50), the output shaft (12) of rotary tillage driver (6) is by transmission mechanism ground-engaging wheel (27), Rotary tillage blade (50) is positioned at the front end of road wheel (27) direction of advance, ploughshare (39) is provided with between Rotary tillage blade (50) and road wheel (27), mainframe (1) is provided with handrail (46) and seeder (42), road wheel (27) drives seeder (42) to sow by transmission mechanism, handrail (46) is provided with the starting switch (47) of engine (2) and the sowing lock (49) of throttle control (48) and control seeder (42).
2. a kind of mountains and rivers according to claim 1 farming machine, it is characterized in that: described rotary tillage driver (6) comprises the power input shaft (7) be connected with transmission mechanism, driven gear (10) on driving gear (8) engagement jackshaft (9) on power input shaft (7), output gear (13) on input gear (11) engagement output shaft (12) on jackshaft (9), output shaft (12) is by transmission mechanism ground-engaging wheel (27), output shaft (12) is provided with drive sprocket (15), drive sprocket (15) is connected by chain with the rotary tillage sprocket wheel (17) on rotating shaft (16), the two ends of rotating shaft (16) are fixed with Rotary tillage blade (50).
3. a kind of mountains and rivers according to claim 1 farming machine, is characterized in that: described rotary tillage driver (6) drives connection for transmission case (28) by transmission mechanism, transmission case (28) connected row travelling wheel (27);
Described transmission case (28) comprises the walking power shaft (31) be connected with rotary tillage driver (6) output shaft (12) by transmission mechanism, walking driving gear (32) on power shaft (31) engages with the walking driven gear (34) in walking jackshaft (33), walking jackshaft (33) is also provided with walking change-speed gearing (35), walking output shaft (36) is provided with the quick gear of walking (37) and walking low-gear (38), gear level (29) controls walking change-speed gearing (35) and walking low-gear (38) engagement or walking driven gear (34) and the quick gear of walking (37) is engaged or makes in the quick gear of walking (37) and low-gear (38) of walking is placed in the change-speed gearing (35) and walk between driven gear (34) of walking, the reference circle of quick gear (37) of walking is less than the reference circle of walking low-gear (38), walking output shaft is provided with road wheel (27).
4. a kind of mountains and rivers according to claim 1 farming machine, it is characterized in that: described Rotary tillage blade (50) comprises left folding inner edge scimitar cutter (20), inner edge scimitar cutter (24) and right folding inner edge scimitar cutter (22), left folding inner edge scimitar cutter (20), inner edge scimitar cutter (24) and right folding inner edge scimitar cutter (22) include handle of a knife and cutter hub, cutter hub and handle of a knife composition sickle shaped, the inner side of cutter hub and handle of a knife all offers blade;
The cutter hub of described left folding inner edge scimitar cutter (20) offsets to the left, and parallel with handle of a knife, and the cutter hub of right folding inner edge scimitar cutter (22) offsets to the right, and parallel with handle of a knife.
5. a kind of mountains and rivers according to claim 4 farming machine, it is characterized in that: described left folding inner edge scimitar cutter (20) and some inner edge scimitar cuttves (24) are fixed on the side of the rotating shaft (16) of rotary tillage driver (6) by rotary tillage cover (18), right folding inner edge scimitar cutter (22) and some inner edge scimitar cuttves (24) are fixed on the opposite side of the rotating shaft (16) of rotary tillage driver (6) by rotary tillage cover (18), the cutter hub of left folding inner edge scimitar cutter (20) and right folding inner edge scimitar cutter (22) is all to bias internal.
6. a kind of mountains and rivers according to claim 1 farming machine, it is characterized in that: the transmission mechanism between described engine (2) and rotary tillage driver (6) and the transmission mechanism between rotary tillage driver (6) and road wheel (27) are pulley transmission mechanism, and the transmission mechanism between road wheel (27) and seeder (42) is chain drive.
7. a kind of mountains and rivers according to claim 1 farming machine, it is characterized in that: the output shaft of described engine (2) connects clutch three horn ring (3), power input shaft (7) connection of rotary tillage driver (6) imports three horn rings (5) into, by driving triangular belt (4) transmission between clutch three horn ring (3) and three horn rings (5);
The output shaft (12) of described rotary tillage driver (6) connects walking initiatively three horn rings (14), road wheel (27) is connected by transmission mechanism with rotary tillage driver (6) by transmission case (28), the walking power shaft (31) of transmission case (28) is provided with driven three horn rings (30) of walking, walking initiatively three horn rings (14) and driven three horn rings (30) of walking to be walked V-belt (26) transmission by transmission.
8. a kind of mountains and rivers according to claim 1 farming machine, it is characterized in that: described mainframe (1) is provided with sowing frame (44), seeder (42) is fixed in sowing frame (44), seeder (42) is provided with sowing sprocket wheel (43), road wheel is provided with transmission case (28), the output shaft of transmission case (28) is provided with sowing drive sprocket (40), sowing drive sprocket (40) and sowing sprocket wheel (43) are by sowing chain (41) transmission.
9. a kind of mountains and rivers according to claim 1 farming machine, is characterized in that: described Rotary tillage blade (50) top is provided with dust cover (25);
Described ploughshare (39) runs through mainframe (1), and top is provided with pin-and-hole, mainframe (1) is provided with the shank matched with ploughshare (39) top pin-and-hole.
10. the method for work of a kind of mountains and rivers according to claim 1 farming machine, it is characterized in that: described mainframe (1) is provided with can the armrest seat (45) of adjusting angle, and handrail (46) is fixed on armrest seat (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510820008.7A CN105265043A (en) | 2015-11-23 | 2015-11-23 | Farming machine for mountains |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510820008.7A CN105265043A (en) | 2015-11-23 | 2015-11-23 | Farming machine for mountains |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105265043A true CN105265043A (en) | 2016-01-27 |
Family
ID=55135566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510820008.7A Pending CN105265043A (en) | 2015-11-23 | 2015-11-23 | Farming machine for mountains |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105265043A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108029255A (en) * | 2017-12-14 | 2018-05-15 | 广西小藻农业科技有限公司 | A kind of agricultural turns over integrated device |
| CN110419283A (en) * | 2019-09-13 | 2019-11-08 | 怀文慧 | A kind of alkaline land soil conditioning reforming apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075890Y (en) * | 2007-07-31 | 2008-06-25 | 商丘市农具制造厂 | Rotary cultivating plow |
| CN201533491U (en) * | 2009-08-16 | 2010-07-28 | 霍建生 | Micro-tillage, fertilization, and seed-sowing machine for plain land and slope land |
| CN202340384U (en) * | 2011-08-22 | 2012-07-25 | 霍建生 | Mountainous area cultivation machine |
| CN202818878U (en) * | 2012-07-10 | 2013-03-27 | 霍建生 | Stream slope cultivating machine |
| DE202014105576U1 (en) * | 2014-11-19 | 2014-12-09 | RODUTEC GmbH | Tillage system |
| CN205142802U (en) * | 2015-11-23 | 2016-04-13 | 霍建生 | Mountains and rivers machine of tiling |
-
2015
- 2015-11-23 CN CN201510820008.7A patent/CN105265043A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075890Y (en) * | 2007-07-31 | 2008-06-25 | 商丘市农具制造厂 | Rotary cultivating plow |
| CN201533491U (en) * | 2009-08-16 | 2010-07-28 | 霍建生 | Micro-tillage, fertilization, and seed-sowing machine for plain land and slope land |
| CN202340384U (en) * | 2011-08-22 | 2012-07-25 | 霍建生 | Mountainous area cultivation machine |
| CN202818878U (en) * | 2012-07-10 | 2013-03-27 | 霍建生 | Stream slope cultivating machine |
| DE202014105576U1 (en) * | 2014-11-19 | 2014-12-09 | RODUTEC GmbH | Tillage system |
| CN205142802U (en) * | 2015-11-23 | 2016-04-13 | 霍建生 | Mountains and rivers machine of tiling |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108029255A (en) * | 2017-12-14 | 2018-05-15 | 广西小藻农业科技有限公司 | A kind of agricultural turns over integrated device |
| CN110419283A (en) * | 2019-09-13 | 2019-11-08 | 怀文慧 | A kind of alkaline land soil conditioning reforming apparatus |
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Application publication date: 20160127 |