CN207269302U - Bionic subsoiler device with small resistance - Google Patents
Bionic subsoiler device with small resistance Download PDFInfo
- Publication number
- CN207269302U CN207269302U CN201721249024.6U CN201721249024U CN207269302U CN 207269302 U CN207269302 U CN 207269302U CN 201721249024 U CN201721249024 U CN 201721249024U CN 207269302 U CN207269302 U CN 207269302U
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- badger
- elbow
- imitative
- bionical
- shovel
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- 239000002689 soil Substances 0.000 abstract description 26
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- Soil Working Implements (AREA)
Abstract
The utility model discloses a bionic sub-soiling shovel device with small resistance, which comprises two parallel horizontal beams, wherein a plurality of connecting rods are rotatably connected between the horizontal beams through a first rotating shaft, the lower ends of the connecting rods are provided with elbows, one ends of the elbows, which are close to the connecting rods, are provided with fixing rods, the lower ends of the connecting rods are provided with fixing grooves corresponding to the fixing rods, the connecting rods are in threaded connection with two vertically arranged first bolts, one ends of the first bolts penetrate through the connecting rods and are in threaded sleeve connection with first nuts, the fixing rods are provided with a plurality of through holes corresponding to the first bolts, and the lower ends of the elbows are provided with imitation badger claw toe shovel bodies; and one side of the rotating shaft is provided with a connecting shaft. The utility model discloses simple structure, convenient to use, through the design of imitative badger claw toe shovel body, the farming resistance is little, the energy consumption is low and loosen deeply effectually, and is simultaneously stable firm to the fixed mounting of imitative badger claw toe shovel body, and the deflection of loosening shovel is convenient for control to conveniently loosen the soil.
Description
Technical field
It the utility model is related to agricultural machinery technological field, more particularly to a kind of bionical subsoiling shovel device of slight drag.
Background technology
The method of the external deep loose plough that begins one's study in the last century 30's, theoretical research have reached higher level.
Recently as technical development of computer, the design method of deep soil loosing shovel is set to be sent out by Experience Design towards the direction that mathematical model is simulated
Exhibition.
At the beginning of the nineties in last century, Germany starts to research and develop Viberation deep coosener, does not vibrate phase with it and relatively reduces 30% and leads
Draw resistance.The Viberation deep coosener with neutral tractor is have developed in Japan in 1993, result of the test show that its tractive force subtracts
Lack 40%.And power adds 2% or so.The passive tiller combine of one kind master of the Shinners in the U.S. et al. designs, it is ploughed
Tool produces driving force to equipment in itself, whole unit tractive force is obtained very big reduction, and general power declines 3.8%, tractive resistance
But it have dropped 87%.
The ratio that domestic deep-ploughing implement occurs is later, also lags behind foreign countries from far away, but in recent years to the weight of deep-ploughing implement
Depending on causing deep-ploughing implement to obtain quick development.It is mainly that some colleges and universities and research institute are being engaged in subsoiling drag reduction at home at present
The research of technology.
The team of Jilin University " the bionical Ministry of Education's major test of engineering " laboratory is bionical to agricultural mechanical field and touches soil
The anti-sticking drag reduction of component has done substantial amounts of theory and actual application research, and achieves abundant achievement in research.Such as：Open fine jade etc.
The outline shape of simulation home mouse pawl toe devises complex morphological subsoiling spade and bionical hook-type deep soil loosing shovel, and using theoretical calculation point
The method that analysis is verified with FInite Element simulation analysis and soil bin test carries out.The result shows that finite element can predict subsoiling well
Shovel resistance during farming.
The soil subsoiling of corn is cultivated, plough sole can be broken, surface vegetation is protected, reduces the harm of wind-water erosion, is strengthened
The ability of retaining and conserveing soil moisture of soil, and the life rate and soil fertilizer of Soil Microorganism are improved, be conducive to the life of crop root system
Long development.According to the experiment of northeast, North China and the Northwest, compared with conventional rotary tillage, corn yield increases respectively after subsoiling
6.87%th, 7.20% and 9.40%, it should deep plough prior to seeding to improve the yield of corn.The subsoiling machinery studied at this stage
Have the shortcomings that big tillage resistance, high energy consumption and subsoiling effect are bad.Therefore, deep soil loosing shovel working resistance is reduced, to reducing subsoiling
Operating cost, saves the energy, and the power utilization rate for improving subsoiling machinery has very important meaning, while reduces deep loose plough resistance
Power also has subsoiling Administration ＆ Mechanical Development unusual significance, and traditional deep soil loosing shovel tillage resistance is big, is when causing subsoiling equipment farming
The main reason for energy consumption is big, and operating cost is high.Deep soil loosing shovel traditional at the same time is not easy to installation and fixes, and the deflection inconvenience of deep soil loosing shovel
In control.
To solve the above-mentioned problems, we have proposed a kind of bionical subsoiling shovel device of slight drag.
Utility model content
The purpose of this utility model is that have big tillage resistance, high energy consumption and subsoiling effect to solve existing subsoiling machinery
The problem of bad while traditional deep soil loosing shovel is not easy to installation and fixes, and the deflection of deep soil loosing shovel is not easy to control, and one proposed
The kind bionical subsoiling shovel device of slight drag.
To achieve these goals, the utility model employs following technical solution：
A kind of bionical subsoiling shovel device of slight drag, including two horizontal beams being arranged in parallel, pass through between the horizontal beam
First rotating shaft is rotatably connected to multiple connecting rods, and the lower end of the connecting rod is equipped with elbow, the elbow close to connecting rod one
End is equipped with fixed link, and the lower end of the connecting rod is equipped with fixing groove corresponding with fixed link, is threaded with the connecting rod
Two the first bolts being vertically arranged, one end of first bolt is socketed with the first nut through connecting rod and screw thread, described
Fixed link is equipped with multiple impenetrating mouths corresponding with the first bolt, and the lower end of the elbow is provided with imitative badger pawl toe shovel body；
The side of the shaft is equipped with connecting shaft, and the both ends of the connecting shaft are fixedly connected with two horizontal beams respectively, institute
State fixing sleeve in connecting shaft and be connected to connection ring, the lateral wall of the connection ring is equipped with multiple sliding slots corresponding with connecting rod, often
Two sliding blocks are slidably connected in a sliding slot, side of the sliding block away from bottom in sliding slot is through sliding slot notch and consolidates
Surely connector sleeve is connected with, two connector sleeves are symmetrical arranged centered on first rotating shaft, and inserted link is inserted with the connector sleeve,
End of the inserted link away from bottom in connector sleeve is through the port of connector sleeve and stretches out, and the connecting rod is equipped with inserting
The corresponding link slot of bar, end of the inserted link away from connector sleeve are rotatablely connected by the madial wall of the second shaft and link slot,
Push-rod electric machine is fixedly connected with the inserted link, the push rod of the push-rod electric machine is connected with promotion ring, the promotion ring sliding sleeve
It is connected on inserted link.
Preferably, the imitative badger pawl toe shovel body is equipped with mounting groove corresponding with elbow close to one end of elbow.
Preferably, be fixedly connected with limited block on the opposite both sides inner wall of the mounting groove, the elbow be equipped with
The corresponding limiting slot of limited block.
Preferably, the end of elbow bottom in mounting groove is equipped with wedge block, and the interior bottom of the mounting groove is set
There is wedge groove corresponding with wedge block.
Preferably, the side of wedge block bottom in wedge groove is equipped with stabiliser bar, the interior bottom of the wedge groove
Equipped with gutter corresponding with stabiliser bar.
Preferably, the second bolt is threaded with the imitative badger pawl toe shovel body, one end of second bolt is through imitative
Simultaneously screw thread is socketed with the second nut to badger pawl toe shovel body, and the stabiliser bar is equipped with port corresponding with the second bolt.
Preferably, the interior bottom of the connector sleeve is fixedly connected with restriction bar, and the inserted link is equipped with corresponding with limiting bar
Restriction groove.
Preferably, it is arranged with spring on the restriction bar, the both ends of the spring interior bottom with inserted link and connector sleeve respectively
Portion connects.
Preferably, the imitative end of the badger pawl toe shovel body away from elbow is equipped with circular arc chamfering.
In the utility model, by using reverse-engineering using badger pawl toe as material, the Bionic Design of deep soil loosing shovel, shovel tip are carried out
The extruding force of soil-entering resistance and suffered soil is small, enhancing penetration performance, and the energy consumption in the equipment course of work is low, improves effect of loosening the soil
Rate；Pass through the madial wall of elbow and mounting groove, the madial wall of wedge block and wedge groove, stabiliser bar and gutter madial wall, increase
Contact area between elbow and imitative badger pawl toe shovel body, while by the cooperation between the second bolt and the second nut, to curved
Head is fixed with imitative badger pawl toe shovel body；Pass through the promotion of the push-rod electric machine positioned at upside so that promote ring to connector sleeve into
Row promotes, so as to facilitate relative position between connector sleeve and inserted link to be adjusted, connector sleeve promotes sliding block so that sliding block and sliding slot
Produce and compress between madial wall, so as to facilitate the fixation of connector sleeve position, to facilitate the lower end of connecting rod to close to connecting shaft
Direction deflects, while the contraction of the push-rod electric machine positioned at downside, so as to facilitate the upper end of connecting rod to the direction away from connecting shaft
Deflection, so that elbow drives imitative badger pawl toe shovel body to be deflected centered on first rotating shaft to close to the direction of connecting shaft, so that
Convenient imitative badger pawl toe shovel body is lifted, and is promoted by the push-rod electric machine positioned at downside, so that connecting rod is driven by elbow
Imitative badger pawl toe shovel body is deflected centered on first rotating shaft to the direction away from connecting shaft, this process is acted to facilitate completion to loosen the soil
In, the second shaft facilitates the opposite deflection between inserted link and connecting rod.The utility model is simple in structure, easy to use, by imitative
The design of badger pawl toe shovel body, tillage resistance is small, energy consumption is low and subsoiling effect is good, while the fixed installation to imitating badger pawl toe shovel body is steady
It is fixed firm, and control is easy in the deflection of deep soil loosing shovel, so as to conveniently loosen the soil.
Brief description of the drawings
Fig. 1 be the utility model proposes a kind of bionical subsoiling shovel device of slight drag structure diagram.
Fig. 2 be the utility model proposes a kind of bionical subsoiling shovel device of slight drag top view.
Fig. 3 is the structure diagram at A in Fig. 1.
Fig. 4 is the structure diagram at B in Fig. 1.
Fig. 5 be the utility model proposes a kind of bionical subsoiling shovel device of slight drag in imitate the structural representation of badger pawl toe shovel body
Figure.
In figure：1 horizontal beam, 2 first rotating shafts, 3 connecting rods, 4 elbows, 5 fixed links, 6 fixing grooves, 7 first bolts, 8 first
Nut, 9 impenetrating mouths, 10 imitative badger pawl toe shovel bodies, 11 mounting grooves, 12 wedge blocks, 13 wedge grooves, 14 stabiliser bars, 15 gutters, 16 the
Two bolts, 17 second nuts, 18 connecting shafts, 19 connection rings, 20 sliding slots, 21 sliding blocks, 22 connector sleeves, 23 inserted links, 24 link slots, 25
Second shaft, 26 push-rod electric machines, 27 promote ring, 28 restriction bars, 29 restriction grooves, 30 springs, 31 limited blocks, 32 limiting slots, 33 to lead to
Mouthful.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
In the description of the utility model, it is to be understood that term " on ", " under ", "front", "rear", "left", "right",
The orientation or position relationship of the instruction such as " top ", " bottom ", " interior ", " outer " are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
With reference to Fig. 1-5, a kind of bionical subsoiling shovel device of slight drag, including two horizontal beams 1 being arranged in parallel, facilitate subsoiling
The installation of shovel, is rotatably connected to multiple connecting rods 3 between horizontal beam 1, the lower end of connecting rod 3 is equipped with elbow by first rotating shaft 2
4, elbow 4 is equipped with fixed link 5 close to one end of connecting rod 3, and the lower end of connecting rod 3 is equipped with fixing groove 6 corresponding with fixed link 5,
Two the first bolts 7 being vertically arranged are threaded with connecting rod 3, one end of the first bolt 7 is through connecting rod 3 and thread bush
It is connected to the first nut 8, fixed link 5 is equipped with multiple with 7 corresponding impenetrating mouth 9 of the first bolt.
The length of fixing groove 6 is inserted into by adjusting fixed link 5, and by the first bolt 7 and the first nut 8 to fixed link 5
Position be fixed so that the position of convenient fixed elbow 4, the lower end of elbow 4 are provided with imitative badger pawl toe shovel body 10, imitate badger pawl
Toe shovel body 10 is equipped with mounting groove 11 corresponding with elbow 4, the fixed peace of convenient imitative badger pawl toe shovel body 10 close to one end of elbow 4
Fill, limited block 31 has been fixedly connected with the opposite both sides inner wall of mounting groove 11, elbow 4 is equipped with and 31 corresponding limit of limited block
Position groove 32, by by the spacing cooperation between limited block 31 and limiting slot 32, so that it is curved to prevent that imitative badger pawl toe shovel body 10 from departing from
First 4.
In addition, the end of the bottom in mounting groove 11 of elbow 4 is equipped with wedge block 12, the interior bottom of mounting groove 11 be equipped with
The corresponding wedge groove 13 of wedge block 12, increases imitative badger pawl toe shovel body 10 and the contact area of 11 madial wall of mounting groove, so that effectively
Avoid rocking for imitative badger pawl toe shovel body 10.
The side of the bottom in wedge groove 13 of wedge block 12 is equipped with stabiliser bar 14, the interior bottom of wedge groove 13 be equipped with it is steady
The corresponding gutter 15 of fixed pole 14, badger pawl toe shovel body 10 and the contact area of 4 madial wall of elbow are imitated in further increase, so that effectively
Avoid rocking for imitative badger pawl toe shovel body 10.
The second bolt 16 is threaded with imitative badger pawl toe shovel body 10, imitative badger pawl toe shovel body is run through in one end of the second bolt 16
10 and screw thread be socketed with the second nut 17, stabiliser bar 14 be equipped with 16 corresponding port 33 of the second bolt, by by the second spiral shell
Bolt 16 runs through imitative badger pawl toe shovel body 10 and port 33 and is threadedly coupled with the second nut 17, so that convenient by imitative badger pawl toe shovel body 10
It is fixedly mounted on elbow 4, imitative 10 end away from elbow 4 of badger pawl toe shovel body is equipped with circular arc chamfering, reduces imitative badger pawl toe shovel body
The contact area of 10 ends and ground away from elbow 4, reduces frictional force, so that convenient imitative badger pawl toe shovel body 10 is inserted into soil
In；
The side of shaft 2 is equipped with connecting shaft 18, and the both ends of connecting shaft 18 are fixedly connected with two horizontal beams 1 respectively, connection
Fixing sleeve is connected to connection ring 19 on axis 18, and the lateral wall of connection ring 19 is equipped with multiple sliding slots 20 corresponding with connecting rod 3, each
Two sliding blocks 21 are slidably connected in sliding slot 20, side of the sliding block 21 away from bottom in sliding slot 20 is through 20 notch of sliding slot and consolidates
Surely connector sleeve 22 is connected with, two connector sleeves 22 are symmetrical arranged centered on first rotating shaft 2, and inserted link is inserted with connector sleeve 22
23, end of the inserted link 23 away from bottom in connector sleeve 22 through connector sleeve 22 port and stretch out, connecting rod 3 be equipped with
The corresponding link slot 24 of inserted link 23, end of the inserted link 23 away from connector sleeve 22 pass through the second shaft 25 and the madial wall of link slot 24
It is rotatablely connected, push-rod electric machine 26 is fixedly connected with inserted link 23, the push rod of push-rod electric machine 26, which is connected with, promotes ring 27, promotes ring 27
It is slidably socketed on inserted link 23, the interior bottom of connector sleeve 22, which is fixedly connected with, limits bar 28, and inserted link 23 is equipped with limiting bar 28
Corresponding restriction groove 29, by the cooperation of gag lever post 28 and limiting slot 29, prevents 23 biased of inserted link, limits and is arranged with bullet on bar 28
Spring 30, the interior bottom of the both ends of spring 30 respectively with inserted link 23 and connector sleeve 22 is connected, due to the pulling force effect of spring 30, so that
Inserted link 23 is avoided to depart from connector sleeve 22.And by the interaction of spring 30 and push-rod electric machine 26, it can cause inserted link 23
It is capable of expansion and contraction between connector sleeve 22.
In the utility model, by using reverse-engineering using badger pawl toe as material, the Bionic Design of deep soil loosing shovel, shovel tip are carried out
The extruding force of soil-entering resistance and suffered soil is small, enhancing penetration performance, and the energy consumption in the equipment course of work is low, improves effect of loosening the soil
Rate；Pass through the madial wall of elbow 4 and mounting groove 11, madial wall, stabiliser bar 14 and the gutter 15 of wedge block 12 and wedge groove 13
Madial wall, increases the contact area between elbow 4 and imitative badger pawl toe shovel body 10, while passes through the second bolt 16 and the second nut
Cooperation between 17, is fixed elbow 4 and imitative badger pawl toe shovel body 10；By the promotion of the push-rod electric machine 26 positioned at upside,
So that the promoting to connector sleeve 22 of ring 27 is promoted, so as to facilitate relative position between connector sleeve 22 and inserted link 23 to be adjusted
Section, connector sleeve 22 promote sliding block 21 so that produce and compress between 20 madial wall of sliding block 21 and sliding slot, so as to facilitate connector sleeve 22
The fixation put, to facilitate the lower end of connecting rod 3 to be deflected to close to the direction of connecting shaft 18, while positioned at the push-rod electric machine 26 of downside
Contraction, so as to facilitate the upper end of connecting rod 3 to be deflected to the direction away from connecting shaft 18, so that elbow 4 drives imitative badger pawl
Toe shovel body 10 is deflected centered on first rotating shaft 2 to close to the direction of connecting shaft 18, so that the lift of convenient imitative badger pawl toe shovel body 10
Rise, promoted by the push-rod electric machine 26 positioned at downside so that connecting rod 3 by elbow 4 drive imitative badger pawl toe shovel body 10 with
Centered on first rotating shaft 2 to away from connecting shaft 18 direction deflect, with facilitate completion loosen the soil action this during, the second shaft
25 facilitate the opposite deflection between inserted link 23 and connecting rod 3.
The above, is only the preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality
New technical solution and its inventive concept is subject to equivalent substitution or change, should all cover the scope of protection of the utility model it
It is interior.
Claims (9)
1. a kind of bionical subsoiling shovel device of slight drag, including two horizontal beams being arranged in parallel（1）, it is characterised in that the water
Flat-topped ridge（1）Between pass through first rotating shaft（2）It is rotatably connected to multiple connecting rods（3）, the connecting rod（3）Lower end be equipped with elbow
（4）, the elbow（4）Close to connecting rod（3）One end be equipped with fixed link（5）, the connecting rod（3）Lower end be equipped with and fixation
Bar（5）Corresponding fixing groove（6）, the connecting rod（3）On be threaded with two the first bolts being vertically arranged（7）, it is described
First bolt（7）One end run through connecting rod（3）And screw thread is socketed with the first nut（8）, the fixed link（5）It is equipped with multiple
With the first bolt（7）Corresponding impenetrating mouth（9）, the elbow（4）Lower end imitative badger pawl toe shovel body is installed（10）；The shaft
（2）Side be equipped with connecting shaft（18）, the connecting shaft（18）Both ends respectively with two horizontal beams（1）It is fixedly connected, it is described
Connecting shaft（18）Upper fixing sleeve is connected to connection ring（19）, the connection ring（19）Lateral wall be equipped with and connecting rod（3）It is corresponding
Multiple sliding slots（20）, each sliding slot（20）Inside slidably connect two sliding blocks（21）, the sliding block（21）Away from sliding
Groove（20）Sliding slot is run through in the side of interior bottom（20）Notch is simultaneously fixedly connected with connector sleeve（22）, two connector sleeves（22）With
First rotating shaft（2）Centered on be symmetrical arranged, the connector sleeve（22）Inside it is inserted with inserted link（23）, the inserted link（23）Away from connection
Set（22）Connector sleeve is run through in the end of interior bottom（22）Port and stretch out, the connecting rod（3）It is equipped with and inserted link
（23）Corresponding link slot（24）, the inserted link（23）Away from connector sleeve（22）End pass through the second shaft（25）With link slot
（24）Madial wall rotation connection, the inserted link（23）On be fixedly connected with push-rod electric machine（26）, the push-rod electric machine（26）'s
Push rod is connected with promotion ring（27）, the promotion ring（27）It is slidably socketed in inserted link（23）On.
A kind of 2. bionical subsoiling shovel device of slight drag according to claim 1, it is characterised in that the imitative badger pawl toe shovel body
（10）Close to elbow（4）One end be equipped with and elbow（4）Corresponding mounting groove（11）.
A kind of 3. bionical subsoiling shovel device of slight drag according to claim 2, it is characterised in that the mounting groove（11）Phase
To both sides inner wall on be fixedly connected with limited block（31）, the elbow（4）It is equipped with and limited block（31）It is corresponding spacing
Groove（32）.
A kind of 4. bionical subsoiling shovel device of slight drag according to claim 2, it is characterised in that the elbow（4）It is close
Mounting groove（11）The end of interior bottom is equipped with wedge block（12）, the mounting groove（11）Interior bottom be equipped with and wedge block（12）It is right
The wedge groove answered（13）.
A kind of 5. bionical subsoiling shovel device of slight drag according to claim 4, it is characterised in that the wedge block（12）Lean on
Nearly wedge groove（13）The side of interior bottom is equipped with stabiliser bar（14）, the wedge groove（13）Interior bottom be equipped with and stabiliser bar（14）
Corresponding gutter（15）.
A kind of 6. bionical subsoiling shovel device of slight drag according to claim 5, it is characterised in that the imitative badger pawl toe shovel body
（10）On be threaded with the second bolt（16）, second bolt（16）One end run through imitative badger pawl toe shovel body（10）And screw thread
It is socketed with the second nut（17）, the stabiliser bar（14）It is equipped with and the second bolt（16）Corresponding port（33）.
A kind of 7. bionical subsoiling shovel device of slight drag according to claim 1, it is characterised in that the connector sleeve（22）'s
Interior bottom is fixedly connected with restriction bar（28）, the inserted link（23）It is equipped with limiting bar（28）Corresponding restriction groove（29）.
A kind of 8. bionical subsoiling shovel device of slight drag according to claim 7, it is characterised in that the restriction bar（28）On
It is arranged with spring（30）, the spring（30）Both ends respectively with inserted link（23）And connector sleeve（22）Interior bottom connection.
A kind of 9. bionical subsoiling shovel device of slight drag according to claim 1, it is characterised in that the imitative badger pawl toe shovel body
（10）Away from elbow（4）End be equipped with circular arc chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721249024.6U CN207269302U (en) | 2017-09-27 | 2017-09-27 | Bionic subsoiler device with small resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721249024.6U CN207269302U (en) | 2017-09-27 | 2017-09-27 | Bionic subsoiler device with small resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207269302U true CN207269302U (en) | 2018-04-27 |
Family
ID=61987294
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721249024.6U Expired - Fee Related CN207269302U (en) | 2017-09-27 | 2017-09-27 | Bionic subsoiler device with small resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207269302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107548587A (en) * | 2017-09-27 | 2018-01-09 | 河北农业大学 | Bionic subsoiler device with small resistance |
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2017
- 2017-09-27 CN CN201721249024.6U patent/CN207269302U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107548587A (en) * | 2017-09-27 | 2018-01-09 | 河北农业大学 | Bionic subsoiler device with small resistance |
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