CN209376150U - A kind of stubble-ploughing, deep-loosening ridger - Google Patents
A kind of stubble-ploughing, deep-loosening ridger Download PDFInfo
- Publication number
- CN209376150U CN209376150U CN201821982986.7U CN201821982986U CN209376150U CN 209376150 U CN209376150 U CN 209376150U CN 201821982986 U CN201821982986 U CN 201821982986U CN 209376150 U CN209376150 U CN 209376150U
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- China
- Prior art keywords
- stubble
- ridging
- ridger
- subsoiling
- rack
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Abstract
The utility model relates to field of agricultural machinery, specifically a kind of stubble-ploughing, deep-loosening ridger, including rack, stubble-cleaning system, deep soil loosing shovel and ridger, frame front is equipped with stubble-cleaning system, deep soil loosing shovel is equipped in central rack, rear end of rack is equipped with ridger, deep soil loosing shovel is slidably mounted on subsoiling mounting rail by deep soil loosing shovel fixing seat, ridger is slidably mounted on ridging mounting rail by ridging fixing seat, subsoiling mounting rail both ends are equipped with subsoiling mounting rail end seat, and subsoiling mounting rail end seat is movably disposed on the curb girder of rack respective side, alignment post there are two being set in ridging fixing seat, rotatable alignment rods are equipped on rear side of deep soil loosing shovel, and alignment boom end is placed between two alignment posts in corresponding ridging fixing seat when adjusting, multiple adjusting holes are equipped on deep soil loosing shovel.The utility model uses subsoiling mode after preceding stubble-cleaning, and stubble-cleaning effect is good, and straw blockage problem can be effectively prevented using ridging disk, adjusts simple and convenient.
Description
Technical field
The utility model relates to field of agricultural machinery, specifically a kind of stubble-ploughing, deep-loosening ridger.
Background technique
Stubble-ploughing, deep-loosening ridger is the common tillage machinery in northeast ridge culture area, has the function of stubble-cleaning, subsoiling, ridging etc., one
Subjob can reach state to be broadcast, and under the premise of guaranteeing that stubble is not blown off by strong wind, can provide straw-returning rate, increase
Strong water storage, getting fat, soil conservation ability.Stubble-ploughing, deep-loosening ridger generally includes stubble ploughing knife pivot, subsoiling device and ridger, wherein going out
Several stubble-cleaning knife groups are placed on stubble cutter shaft, subsoiling device generallys use deep soil loosing shovel, and ridger generallys use ridging ploughshare, but existing
There is the ridger in technology straw blockage problem occur vulnerable to stalk influence under ridge in ridging operation, and is difficult to realize
Ridge ridge height and row spacing adjustment, in addition subsoiling device and ridger in the prior art are typically fixed in agricultural machinery rack, nothing
The adjustment of method realization subsoiling furrow distance and ridging distance.
Utility model content
The purpose of this utility model is to provide a kind of stubble-ploughing, deep-loosening ridgers, using subsoiling mode after preceding stubble-cleaning, stubble-cleaning
Effect is good, and uses ridging disk, straw blockage problem when ridging operation can be effectively prevented, earthing effect is good, and ridging ridge
High and row spacing, subsoiling furrow distance, ridging distance etc. can adjust as needed, flexible and convenient to use.
The purpose of this utility model is achieved through the following technical solutions:
A kind of stubble-ploughing, deep-loosening ridger, including rack, stubble-cleaning system, deep soil loosing shovel and ridger, frame front, which is equipped with, to go out
Stubble system is equipped with subsoiling mounting rail in central rack, and the subsoiling mounting rail is equipped with multiple deep soil loosing shovels, and rear end of rack is equipped with
Ridging mounting rail, and the ridging mounting rail is equipped with multiple ridgers, the deep soil loosing shovel is removable by deep soil loosing shovel fixing seat
It is installed on the subsoiling mounting rail dynamicly, the ridger, which is slidably mounted on the ridging by ridging fixing seat, pacifies
It fills on beam, subsoiling mounting rail both ends are equipped with subsoiling mounting rail end seat, and the subsoiling mounting rail end seat is movably disposed in
On the curb girder of rack respective side, set in the ridging fixing seat there are two alignment post, the deep soil loosing shovel rear side is equipped with rotatable
Alignment rods, and the alignment boom end is placed between two alignment posts in corresponding ridging fixing seat when adjustment, in the depth
Pine shovel is equipped with multiple adjusting holes.
The ridger includes mounting rack, ridging fixing seat, wheel shaft, handwheel, tie ridger connecting plate and ridging disk, and described
Ridge fixing seat is equipped with strutbeam, and mounting rack front end and the ridging fixing seat are hinged, behind the wheel shaft lower end and the mounting rack
End is connected, and the wheel shaft upper end is threadedly coupled after passing through the strutbeam with the handwheel, and compression is arranged on the wheel shaft
Spring is equipped with moveable slide on the mounting rack, is equipped with hinged connecting plate, two tie ridgers in the mounting rack two sides
Connecting plate inner end is hinged by the first hinged shaft, and first hinged shaft and the slide are connected, and pass through in the middle part of each tie ridger connecting plate
Second hinged shaft and the hinged connecting plate of respective side are hinged, and each tie ridger connecting plate outer end is connected with the ridging disk of respective side.
Slide and sliding slot are equipped on the mounting rack, and the slide is moved along the sliding slot, first hinged shaft
Upper end and the slide are connected, and baffle and adjustment bolt are equipped on front side of the mounting rack, and the adjustment bolt is across described
It is connected after baffle with the slide, nut is equipped in the adjustment bolt on the outside of the baffle.
The ridging fixing seat is equipped with articulated shaft, and mounting rack two sides are equipped with side plate, and the side plate front end and the hinge
Spindle is hinged.
The tie ridger connecting plate is dovetail-shape.
The deep soil loosing shovel fixing seat, ridging fixing seat are identical with subsoiling mounting rail end seat structure, include pedestal and rotation
Side plate, the pedestal and rotation side plate are integrally in concave, and the rotation side plate is articulated with pedestal side, another in the pedestal
Side end and rotation side plate end are equipped with the connecting plate of threaded connecting hole.
The stubble-cleaning system includes transmission case and stubble ploughing knife pivot, is equipped with front shroud on front side of the rack, the transmission case is set to
On the front shroud, stubble ploughing knife pivot is set to front end of rack and transmits torque actuated rotation by the transmission mechanism in the transmission case,
Multiple groups stubble-cleaning knife group is equipped on the stubble ploughing knife pivot.
Multiple stubble-cleaning covers are equipped on the downside of the front shroud rear end, and stubble-cleaning cover and stubble-cleaning knife group correspond.
The advantages of the utility model and good effect are as follows:
1, the utility model is using subsoiling mode after preceding stubble-cleaning, and stubble-cleaning effect is good, and subsoiling ridge platform, subsoiling is energy-efficient, soil
Earth is softer, is conducive to crop growth.
2, the utility model uses ridging disk, and the soil that deep soil loosing shovel is scooped up props up into ridge, compared to traditional plowshare furrow-damming device,
The straw blockage problem when ridging operation of mechanized harvest plot can be effectively prevented, earthing effect is good, and adjusts simple and convenient.
3, the utility model ridging disk angle and height are adjustable, in addition it can realize that ridging fixing seat is installed along ridging
The adjustment of beam length direction also may be implemented deep soil loosing shovel fixing seat along subsoiling and install beam length to realize that ridger spacing adjusts
Degree adjustment, with realize deep soil loosing shovel spacing adjust, in addition the subsoiling mounting rail can front and back adjustment, with realize subsoiling mounting rail with rise
Spacing adjustment between the mounting rail of ridge, and deep soil loosing shovel height also can according to need adjustment, thus can be according to reality when using
Border needs to adjust subsoiling furrow distance and ridging distance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model,
Fig. 2 is the ridger schematic diagram in Fig. 1,
Fig. 3 is the ridger partial enlarged view in Fig. 2,
Fig. 4 is the ridging disk schematic diagram in Fig. 3,
Fig. 5 is the A direction view in Fig. 1,
Fig. 6 is the transmission mechanism schematic illustration in the transmission case in Fig. 5,
Fig. 7 is the deep soil loosing shovel fixing seat schematic diagram in Fig. 1,
Fig. 8 is the ridging fixing seat schematic diagram in Fig. 1,
Fig. 9 is the deep soil loosing shovel schematic diagram in Fig. 1,
Figure 10 is that deep soil loosing shovel and corresponding ridging fixing seat are directed at schematic diagram when the utility model adjusts.
Wherein, 1 is ridger, and 101 be mounting rack, and 102 be articulated shaft, and 103 be ridging fixing seat, and 1031 be alignment
Column, 104 be strutbeam, and 105 be handwheel, and 106 be compressed spring, and 107 be ridging disk, and 108 be adjustment bolt, and 109 connect for tie ridger
Plate, 110 be telophragma, and 111 be slide, and 112 be sliding slot, and 113 be side plate, and 114 be the first hinged shaft, and 115 be the second hinged shaft, 116
For hinged connecting plate, 2 be rack, and 201 be front shroud, and 202 be stubble-cleaning cover, and 203 be subsoiling mounting rail, and 204 be ridging mounting rail, 205
It is deep soil loosing shovel for curb girder, 3,301 be deep soil loosing shovel fixing seat, and 3011 be threaded connection hole, and 3012 be hinge, and 3013 be rotating side
Plate, 302 be subsoiling mounting rail end seat, and 303 be alignment rods, and 304 be fixing screws, and 305 be adjusting hole, and 4 be stubble-cleaning system, 401
It is stubble ploughing knife pivot for transmission case, 402,403 be power input shaft, and 404 be stubble-cleaning knife group, and 405 be bevel gear set, and 406 be belt
Transmission component.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Fig. 1~10, the utility model includes rack 2, stubble-cleaning system 4, deep soil loosing shovel 3 and ridger 1, rack 2
Front is equipped with stubble-cleaning system 4, subsoiling mounting rail 203 is equipped in the middle part of rack 2, and the subsoiling mounting rail 203 is equipped with multiple
Deep soil loosing shovel 3,2 rear end of rack is equipped with ridging mounting rail 204, and the ridging mounting rail 204 is equipped with multiple ridgers 1.
As shown in figs. 2 to 4, the ridger 1 includes mounting rack 101, ridging fixing seat 103, wheel shaft, handwheel 105, rises
Ridge device connecting plate 109 and ridging disk 107, ridging fixing seat 103 is set on the ridging mounting rail 204, and the ridging fixing seat
103 are equipped with articulated shaft 102 and strutbeam 104, telophragma 110 are equipped in the middle part of mounting rack 101,110 two sides of telophragma are equipped with side plate
113, and 113 front end of the side plate and the articulated shaft 102 are hinged, the telophragma of the wheel shaft lower end and the mounting rack 101
110 rear ends are connected, and the wheel shaft upper end is threadedly coupled after passing through the strutbeam 104 with the handwheel 105, and on the wheel shaft
Be arranged with compressed spring 106, screwing the handwheel 105 can be such that handwheel 105 moves along the wheel shaft, and make handwheel 105 with
Wheel shaft length between 101 rear end of mounting rack changes, since handwheel 105 is limited to strutbeam 104, after handwheel 105 and mounting rack 101
Wheel shaft length between end changes namely driving 101 rear end lifting moving of mounting rack, and makes mounting rack 101 around the articulated shaft of front end
102 swing, and realize the purpose for changing 101 tilt angle of mounting rack, and then change ridging height, supply on the strutbeam 104
The hole that the wheel shaft and compressed spring 106 pass through is sufficiently large, in addition to limit, to guarantee that mounting rack 101 swings the wheel simultaneously
Axis and compressed spring 106 also have enough swing spaces.
As shown in figs. 2 to 4, the tie ridger connecting plate 109 is dovetail-shape, and two 109 inner ends of tie ridger connecting plate pass through the
One hinged shaft 114 is hinged, is equipped with hinged connecting plate 116 in 101 two sides of mounting rack, passes through in the middle part of each tie ridger connecting plate 109
Second hinged shaft 115 and the hinged connecting plate 116 of respective side are hinged, and 109 outer end of tie ridger connecting plate is connected with ridging disk 107,
The telophragma 110 of the mounting rack 101 is equipped with slide 111 and sliding slot 112, and the slide 111 can be along the sliding slot 112
Mobile, 114 upper end of the first hinged shaft and the slide 111 are connected, and are equipped on front side of the telophragma 110 of the mounting rack 101
Baffle and adjustment bolt 108, and the adjustment bolt 108 is connected after the baffle with the slide 111, in the baffle
The adjustment bolt 108 in outside is equipped with nut, drives the slide 111 to move even if screwing the nut adjustment bolt 108
It is dynamic, and then change the angle between two tie ridger connecting plates 109, namely change the angle between two ridging disks 107.
As shown in Fig. 5~6, the stubble-cleaning system 4 includes transmission case 401 and stubble ploughing knife pivot 402, as shown in Figure 1, the machine
Front shroud 201 is equipped on front side of frame 2, the transmission case 401 is set on the front shroud 201, and the power input shaft of the transmission case 401
403 are connected with the driving device on tractor, this is techniques well known, and stubble ploughing knife pivot 402 is set to 2 front end of rack and passes through
Transmission mechanism transmitting torque actuated rotation in the transmission case 401, is equipped with multiple groups stubble-cleaning knife group on the stubble ploughing knife pivot 402
404, multiple stubble-cleaning covers 202 are in addition equipped on the downside of 201 rear end of front shroud, and stubble-cleaning cover 202 and stubble-cleaning knife group 404 1 are a pair of
It answers, the stubble-cleaning knife group 404 is techniques well known.
In the present embodiment, the transmission mechanism in the transmission case 401 is as shown in fig. 6, include that bevel gear set 405 and belt pass
Dynamic component 406, the power input shaft 403 are connected with the drive bevel gear in bevel gear set 405, in bevel gear set 405 from
Driving pulley in dynamic bevel gear and belt drive component 406 is connected, and the driven pulley in belt drive component 406 goes out with described
Stubble cutter shaft 402 is connected.
As shown in Figure 1, the ridging fixing seat 103 is slidably mounted on ridging mounting rail 204, the deep soil loosing shovel 3
Equipped in deep soil loosing shovel fixing seat 301, and the deep soil loosing shovel fixing seat 301 is movably disposed on the subsoiling mounting rail 203, institute
203 both ends of subsoiling mounting rail are stated equipped with subsoiling mounting rail end seat 302, and the subsoiling mounting rail end seat 302 is movably disposed in
On the curb girder 205 of 2 respective side of rack.The utility model can realize ridging fixing seat 103 along 204 length direction of ridging mounting rail
Adjustment can also be achieved deep soil loosing shovel fixing seat 301 along 203 length tune of subsoiling mounting rail to realize that 1 spacing of ridger adjusts
It is whole, with realize 3 spacing of deep soil loosing shovel adjust, in addition the subsoiling mounting rail 203 can front and back adjustment, to realize subsoiling mounting rail 203
Spacing adjustment between ridging mounting rail 204.
As shown in fig. 7,302 structure phase of the deep soil loosing shovel fixing seat 301, ridging fixing seat 103 and subsoiling mounting rail end seat
It together, include pedestal and rotation side plate 3013, and the rotation side plate 3013 is hinged by hinge 3012 and pedestal, the pedestal
Whole with rotation side plate 3013 is in concave, and the rotation side plate 3013 is set to pedestal side, in the pedestal end side
And 3013 end of rotation side plate is equipped with the connecting plate of threaded connecting hole 3011.When adjustment, by the rotation side plate 3013
It opens, pedestal is moved at this time, or pedestal is removed from corresponding beam, after pedestal position determines, then again by rotating side
The connecting plate of 3013 end of plate and the connecting plate of pedestal end are connected with bolt and nut, to retightening pedestal corresponding
Liang Shang.
Deep soil loosing shovel 3 and ridging fixing seat 103 correspond when the utility model can also ensure that adjustment, such as the institute of Fig. 8~10
Show, the ridging fixing seat 103 is set close to 3 side of deep soil loosing shovel there are two alignment post 1031, and being equipped on rear side of the deep soil loosing shovel 3 can turn
Dynamic alignment rods 303,303 lower end of alignment rods is hinged by hinged shaft and the deep soil loosing shovel 3, and upper end usually passes through fixing screws
304 are fixed on 3 upper end of deep soil loosing shovel, and when adjustment is aligned, fixing screws 304, which are unscrewed, rotates alignment rods 303, and as shown in Figure 10
303 end of alignment rods is placed between two alignment posts 1031 in corresponding ridging fixing seat 103, to realize alignment, is adjusted
After the completion, then alignment rods 303 is gone back into original position again and are fixed on deep soil loosing shovel 3.In addition it is equipped on the deep soil loosing shovel 3 multiple
Adjusting hole 305,103 front end of ridging fixing seat be equipped with mounting plate, and the mounting plate by bolt and nut handle together in difference
The height adjustment of deep soil loosing shovel 3 is realized in the adjusting hole 305 of height.
The working principle of the utility model are as follows:
The utility model uses subsoiling mode after preceding stubble-cleaning, and stubble-cleaning effect is good, in addition uses 107 ridging of ridging disk, compares
In traditional plowshare furrow-damming device, the straw blockage problem when ridging operation of mechanized harvest plot, and adjustment side can be effectively prevented
Just, handwheel 105 can be made to move along the wheel shaft wherein screwing the handwheel 105, and after making handwheel 105 and mounting rack 101
Wheel shaft length between end changes, and then swings mounting rack 101 around the articulated shaft 102 of front end, realizes and changes the mounting rack
The purpose of 101 tilt angles, namely change 107 ridging height purpose of ridging disk, even if twisting the nut adjustment bolt 108
It drives the slide 111 on mounting rack 101 mobile, and then two tie ridger connecting plates 109 is driven to rotate, namely change two ridging disks
Angle between 107 realizes row spacing adjustment.
In addition to the adjustment of above-mentioned ridger 1, the utility model can also realize that ridging fixing seat 103 is installed along ridging
The adjustment of 204 length direction of beam also may be implemented deep soil loosing shovel fixing seat 301 and pacify along subsoiling to realize that 1 spacing of ridger adjusts
Fill 203 length adjustment of beam, with realize 3 spacing of deep soil loosing shovel adjust, in addition the subsoiling mounting rail 203 can front and back adjustment, with realize
Spacing adjustment between subsoiling mounting rail 203 and ridging mounting rail 204,3 height of deep soil loosing shovel also can according to need adjustment.
Claims (8)
1. a kind of stubble-ploughing, deep-loosening ridger, it is characterised in that: filled including rack (2), stubble-cleaning system (4), deep soil loosing shovel (3) and ridging
It sets (1), rack (2) front is equipped with stubble-cleaning system (4), is equipped with subsoiling mounting rail (203) in the middle part of rack (2), and the subsoiling
Mounting rail (203) is equipped with multiple deep soil loosing shovels (3), and rack (2) rear end is equipped with ridging mounting rail (204), and the ridging is installed
Beam (204) is equipped with multiple ridgers (1), and the deep soil loosing shovel (3) is slidably mounted on by deep soil loosing shovel fixing seat (301)
On the subsoiling mounting rail (203), the ridger (1) is slidably mounted on described rise by ridging fixing seat (103)
On ridge mounting rail (204), subsoiling mounting rail (203) both ends are equipped with subsoiling mounting rail end seat (302), and the subsoiling is installed
Beam-ends seat (302) is movably disposed on the curb girder (205) of rack (2) respective side, and the ridging fixing seat (103) is equipped with two
A alignment post (1031), deep soil loosing shovel (3) rear side is equipped with rotatable alignment rods (303), and alignment rods when adjustment
(303) end is placed between two alignment posts (1031) on corresponding ridging fixing seat (103), on the deep soil loosing shovel (3)
Equipped with multiple adjusting holes (305).
2. a kind of stubble-ploughing, deep-loosening ridger according to claim 1, it is characterised in that: the ridger (1) includes peace
Shelve (101), ridging fixing seat (103), wheel shaft, handwheel (105), tie ridger connecting plate (109) and ridging disk (107), described
Ridge fixing seat (103) is equipped with strutbeam (104), mounting rack (101) front end and the ridging fixing seat (103) hingedly, the wheel
Axis lower end and the mounting rack (101) rear end are connected, the wheel shaft upper end pass through the strutbeam (104) afterwards with the handwheel
(105) it is threadedly coupled, and is arranged with compressed spring (106) on the wheel shaft, be equipped on the mounting rack (101) removable
Slide (111), be equipped with hinged connecting plate (116) in the mounting rack (101) two sides, two tie ridger connecting plate (109) inner ends
Hingedly by the first hinged shaft (114), and first hinged shaft (114) and the slide (111) are connected, each tie ridger connecting plate
(109) in the middle part of hingedly by the hinged connecting plate (116) of the second hinged shaft (115) and respective side, each tie ridger connecting plate (109) outer end
It is connected with the ridging disk (107) of respective side.
3. stubble-ploughing, deep-loosening ridger according to claim 2, it is characterised in that: be equipped with and slide on the mounting rack (101)
Seat (111) and sliding slot (112), and the slide (111) is mobile along the sliding slot (112), the first hinged shaft (114) upper end
It is connected with the slide (111), baffle and adjustment bolt (108), and the adjustment spiral shell is equipped on front side of the mounting rack (101)
Bolt (108) is connected after passing through the baffle with the slide (111), is equipped in the adjustment bolt (108) on the outside of the baffle
Nut.
4. stubble-ploughing, deep-loosening ridger according to claim 2, it is characterised in that: the ridging fixing seat (103) is equipped with
Articulated shaft (102), mounting rack (101) two sides are equipped with side plate (113), and the side plate (113) front end and the articulated shaft (102)
Hingedly.
5. stubble-ploughing, deep-loosening ridger according to claim 2, it is characterised in that: the tie ridger connecting plate (109) is in dovetail
Shape.
6. stubble-ploughing, deep-loosening ridger according to claim 1, it is characterised in that: the deep soil loosing shovel fixing seat (301), ridging
Fixing seat (103) is identical with subsoiling mounting rail end seat (302) structure, includes pedestal and rotation side plate (3013), the pedestal
It is in integrally concave with rotation side plate (3013), and the rotation side plate (3013) is articulated with pedestal side, it is another in the pedestal
Side end and rotation side plate (3013) end are equipped with the connecting plate of threaded connecting hole (3011).
7. stubble-ploughing, deep-loosening ridger according to claim 1, it is characterised in that: the stubble-cleaning system (4) includes transmission case
(401) and stubble ploughing knife pivot (402), rack (2) front side are equipped with front shroud (201), and the transmission case (401) is set to the front shroud
(201) on, stubble ploughing knife pivot (402) is set to rack (2) front end and transmits torque by the transmission mechanism in the transmission case (401)
Driving rotation, is equipped with multiple groups stubble-cleaning knife group (404) on the stubble ploughing knife pivot (402).
8. stubble-ploughing, deep-loosening ridger according to claim 7, it is characterised in that: set on the downside of the front shroud (201) rear end
There are multiple stubble-cleaning covers (202), and stubble-cleaning cover (202) and stubble-cleaning knife group (404) correspond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821982986.7U CN209376150U (en) | 2018-11-29 | 2018-11-29 | A kind of stubble-ploughing, deep-loosening ridger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821982986.7U CN209376150U (en) | 2018-11-29 | 2018-11-29 | A kind of stubble-ploughing, deep-loosening ridger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209376150U true CN209376150U (en) | 2019-09-13 |
Family
ID=67865889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821982986.7U Expired - Fee Related CN209376150U (en) | 2018-11-29 | 2018-11-29 | A kind of stubble-ploughing, deep-loosening ridger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209376150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109328504A (en) * | 2018-11-29 | 2019-02-15 | 肖桂增 | Stubble-ploughing, deep-loosening ridger |
-
2018
- 2018-11-29 CN CN201821982986.7U patent/CN209376150U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109328504A (en) * | 2018-11-29 | 2019-02-15 | 肖桂增 | Stubble-ploughing, deep-loosening ridger |
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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: 20190913 Termination date: 20201129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |