CN108307700A - A kind of more landform finishing rakes - Google Patents
A kind of more landform finishing rakes Download PDFInfo
- Publication number
- CN108307700A CN108307700A CN201810234215.8A CN201810234215A CN108307700A CN 108307700 A CN108307700 A CN 108307700A CN 201810234215 A CN201810234215 A CN 201810234215A CN 108307700 A CN108307700 A CN 108307700A
- Authority
- CN
- China
- Prior art keywords
- rake
- aody
- rake aody
- rotary cultivator
- hinged
- 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
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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
- A01B19/00—Harrows with non-rotating tools
- A01B19/02—Harrows with non-rotating tools with tools rigidly or elastically attached to a tool-frame
- A01B19/06—Harrows with non-rotating tools with tools rigidly or elastically attached to a tool-frame with tools or tool-frames moved to-and-fro mechanically
-
- 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
- A01B19/00—Harrows with non-rotating tools
- A01B19/10—Lifting or cleaning apparatus
-
- 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
- A01B23/00—Elements, tools, or details of harrows
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Working Implements (AREA)
Abstract
The present invention relates to agricultural equipment fields,Especially a kind of more landform finishing rakes,Including rotary cultivator and weed cultivated rake,The front end for weeding one end and rotary cultivator for ploughing rake is hinged,It is described weed plough rake include the first rake aody,Second rake aody,Third rake aody,Bindiny mechanism and switching mechanism,Second rake aody is identical with the structure of third rake aody and the second rake aody and third rake aody are in be symmetrically mounted on the both ends of the first rake aody,First rake aody and the second rake aody are fixedly connected by connection structure with the first rake aody,The switching mechanism is mounted in the first rake aody and switching mechanism is fixedly connected with bindiny mechanism,First rake aody,The front end of second rake aody and third rake aody is equipped with several rake teeths being equally arranged,The rake teeth is in the front end of circular arc type and rake teeth in flat,The present invention can be mounted on various types of rotary cultivators,It is unfolded by the second rake aody and third rake aody,So that weeding the length increase for ploughing rake,Accelerate to arrange soil speed.
Description
Technical field
The present invention relates to agricultural equipment field, especially a kind of more landform finishing rakes.
Background technology
With the development of science and technology, use mechanical in agricultural production process is gradually instead of hand labor, crops are being planted
Before plant, need to turn in field whole, agricultural crop straw on soil is pricked in removal, soil is turned over whole broken and by prepartion of land, is made
Soil is suitble to the plantation of crops, turns over whole speed to accelerate soil, present farmland is worked using rotary cultivator, before machinery
Finishing rake into promotion positioned at rotary cultivator front end arranges soil, and before existing finishing rake is fixedly mounted on rotary cultivator mostly
End is not easy to dismantle and replace, also can be only installed on corresponding rotary cultivator, use scope is narrow, and existing smooth
Rake length is fixed, and cannot further increase its length at work so that consolidation speed is relatively low.
Invention content
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of more landform finishing rakes, Neng Gouan
On various types of rotary cultivators and length can be increased by folding.
In order to achieve the above object, the technical solution adopted in the present invention is as follows：
A kind of more landform finishing rakes, including rotary cultivator are hinged with cultivated rake, the front end for weeding one end and rotary cultivator for ploughing rake is weeded,
It is described to weed that plough rake include the first rake aody, the second rake aody, third rake aody, bindiny mechanism and switching mechanism, second rake aody and the
The structure of three rake aodies is identical and the second rake aody and third rake aody are in be symmetrically mounted on the both ends of the first rake aody, first rake aody and
Second rake aody is fixedly connected by connection structure with the first rake aody, and the switching mechanism is mounted in the first rake aody and tipper
Structure is fixedly connected with bindiny mechanism, the front end of first rake aody, the second rake aody and third rake aody be equipped with several in etc. between
Rake teeth away from setting, the rake teeth is in the front end of circular arc type and rake teeth in flat.
Preferably, the rear end of first rake aody is equipped with the interconnecting piece for being secured to connection, and the rear end of the interconnecting piece is set
There is mounting hole, sets that there are two the hinged seats that are symmetrical set on interconnecting piece.
Preferably, the bindiny mechanism include two connectors, two connectors be separately mounted to the first rake aody with
Between second rake aody between the first rake aody and third rake aody.
Preferably, the switching mechanism includes two overturning hydraulic stems, and two overturning hydraulic stems are symmetrical set and two
The rear end for overturning hydraulic stem is hinged with the first rake aody, and the output end of two overturning hydraulic stems is hinged with two connectors respectively.
Preferably, the front end both sides of the rotary cultivator are equipped with connecting pole, and two connecting poles are in be vertically arranged, the rotation
The front end for the machine of ploughing is set there are two hydraulic stem is adjusted, and the rear end of two adjusting hydraulic stems is hinged with the upper end of two connecting poles respectively,
The front end of two adjusting hydraulic stems is hinged with two hinged seats respectively.
Preferably, the rotary cultivator is equipped with hydraulic device, and two overturning hydraulic stems and two adjust hydraulic stems and liquid
Pressure device connects.
Preferably, the lower end of the rotary cultivator is set there are two traveling wheel, is equipped between two traveling wheels for both connecting
Connecting shaft, connecting shaft is located at the lower end of rotary cultivator and connecting shaft and is rotatablely connected with rotary cultivator.
Preferably, the upper end of the rotary cultivator is equipped with launch device, and the launch device is sequentially connected with connecting shaft.
Preferably, first rake aody, the second rake aody, third rake aody and interconnecting piece are made of metal material.
Compared with prior art, the beneficial effects of the present invention are：The present invention can be mounted on various types of rotary cultivators,
Pass through two overturning hydraulic stem two connectors of Work Promote so that the second rake aody and the expansion of third rake aody, so that weeding cultivated
The length of rake increases, and weeds the arrangement area for ploughing rake to increase, accelerates the speed of consolidation, can control two adjusting hydraulic pressure
Bar works, and controls the level height of rake teeth, and to change the depth for weeding and ploughing rake and arranging soil, the present invention is mounted on rotary cultivator
Has the function of mud guard.
Description of the drawings
Fig. 1 is the dimensional structure diagram one of the present invention；
Fig. 2 is the sectional perspective structural schematic diagram one of the present invention；
Fig. 3 is the enlarged drawing at A in Fig. 2；
Fig. 4 is the sectional perspective structural schematic diagram two of the present invention；
Fig. 5 is the enlarged drawing at B in Fig. 4；
Fig. 6 is that the schematic diagram for ploughing rake is weeded in the present invention；
Fig. 7 is the enlarged drawing at C in Fig. 6；
Fig. 8 is that the folded state diagram for ploughing rake is weeded in the present invention；
Fig. 9 is the dimensional structure diagram two of the present invention.
In figure：Rotary cultivator 1 weeds and ploughs rake 2, the first rake aody 2a, and rake teeth 2a1, the second rake aody 2b, third rake aody 2c connect machine
Structure 2d, connector 2d1, switching mechanism 2e, overturn hydraulic stem 2e1, interconnecting piece 2f, mounting hole 2f1, hinged seat 2f2, connecting pole 3,
Hydraulic stem 4 is adjusted, traveling wheel 5, launch device 6, the first fixing piece 7, the first fixed plate 7a, the first fixinig plate 7b, second fixes
Piece 7c, the second fixing piece 8, the second fixed plate 8a, the third fixinig plate connection component 9 of 8b, the 4th fixinig plate 8c, first, first connects
Contact pin 9a, the second connection sheet 9b, the second connection component 10, the third connection sheet fixing axle 11 of 10a, the 4th connection sheet 10b, first,
Second fixing axle 12, third fixing axle 13, the 4th fixing axle 14.
Specific implementation mode
In the following, in conjunction with attached drawing and specific implementation mode, the present invention is described further：
Referring to figs. 1 to a kind of more landform finishing rakes shown in Fig. 9, including rotary cultivator 1 and weed and plough rake 2, weed plough one end of rake 2 with
The front end of rotary cultivator 1 is hinged, weeds and ploughs rake 2 including the first rake aody 2a, the second rake aody 2b, third rake aody 2c, bindiny mechanism 2d and turn over
Rotation mechanism 2e, the second rake aody 2b are identical with the structure of third rake aody 2c and the second rake aody 2b and third rake aody 2c is in be symmetrically mounted on
The both ends of first rake aody 2a, the first rake aody 2a and the second rake aody 2b are fixedly connected by connection structure with the first rake aody 2a, are turned over
Rotation mechanism 2e is mounted on the first rake aody 2a and switching mechanism 2e is fixedly connected with bindiny mechanism 2d, the first rake aody 2a, the second rake
The front end of body 2b and third rake aody 2c are equipped with several rake teeth 2a1 being equally arranged, and rake teeth 2a1 is in circular arc type and rake teeth
The front end of 2a1 is in flat；By bindiny mechanism 2d the first rake aodies of connection 2a, the second rake aody 2b and third rake aody 2c, work as discomfort
When with weeding cultivated rake 2, the second rake aody 2b and third rake aody 2c can be folded by switching mechanism 2e and weed the occupancy for ploughing rake 2 to reduce
Space can plough rake 2 by switching mechanism 2e by the second rake aody 2b and the 2c expansion of third rake aody so that weeding when in use
Entire length increase, accelerate consolidation speed.
The rear end of first rake aody 2a is equipped with the interconnecting piece 2f for being secured to connection, and the rear end of interconnecting piece 2f is equipped with mounting hole
The hinged seat 2f2 being symmetrical set there are two being set on 2f1, interconnecting piece 2f；It will can quickly be weeded by mounting hole 2f1 and plough 2 peace of rake
On the rotary cultivator 1 of different model, keep its scope of application more extensive.
Bindiny mechanism 2d includes that two connectors 2d1, two connector 2d1 are separately mounted to the rakes of the first rake aody 2a and second
Between body 2b between the first rake aody 2a and third rake aody 2c；Make the second rake aody 2b and third rake aody 2c by connector 2d1
It can fold and be unfolded.
Switching mechanism 2e includes two overturning hydraulic stem 2e1, and two overturning hydraulic stem 2e1 are symmetrical set and two overturnings
The rear end of hydraulic stem 2e1 is hinged with the first rake aody 2a, the output ends of two overturning hydraulic stem 2e1 respectively with two connectors
2d1 is hinged；Pass through two overturning hydraulic stem 2e1 work so that the second rake aody 2b and third rake aody 2c is folded or expansion, convenient
Control, save trouble and labor.
The front end both sides of rotary cultivator 1 are equipped with connecting pole 3, and two connecting poles 3 are in be vertically arranged, the front end of rotary cultivator 1
If there are two hydraulic stem 4 is adjusted, the rear end of two adjusting hydraulic stems 4 is hinged with the upper end of two connecting poles 3 respectively, two adjustings
The front end of hydraulic stem 4 is hinged with two hinged seat 2f2 respectively；It can control to weed by two adjusting hydraulic stems 4 and plough rake 2 and rotary tillage
Angle between machine 1 adjusts the height of rake teeth 2a1, to control the depth in whole soil.
Rotary cultivator 1 is equipped with hydraulic device, and two overturning hydraulic stem 2e1 and two adjust hydraulic stems 4 and hydraulic device
Connection；To overturning hydraulic stem 2e1 and the offer power of hydraulic stem 4 is adjusted by hydraulic device.
The lower end of rotary cultivator 1 is set there are two traveling wheel 5, and the connecting shaft for connect the two is equipped between two traveling wheels 5,
Connecting shaft is located at the lower end of rotary cultivator 1 and connecting shaft is rotatablely connected with rotary cultivator 1；Traveling wheel 5 moves convenient for rotary cultivator 1.
The upper end of rotary cultivator 1 is equipped with launch device 6, and launch device 6 is sequentially connected with connecting shaft, the driving row of launch device 6
5 rotation of wheel is walked, to make rotary cultivator 1 work.
First rake aody 2a, the second rake aody 2b, third rake aody 2c and interconnecting piece 2f are made of metal material；Metal quality is hard
It is hard and wear-resisting, not perishable, it can use for a long time.
Connector 2d1 includes the first fixing piece 7, the second fixing piece 8, the first connection component 9 and the second connection component 10, the
The first fixing axle 11 is equipped between one fixing piece 7 and the second fixing piece 8, the first fixing axle 11 sequentially passes through 7 He of the first fixing piece
The two is hinged by the second fixing piece 8, and the second fixing axle 12 is respectively equipped on the first fixing piece 7 and the second fixing piece 8 and third is solid
One end of dead axle 13, the first connection component 9 is hinged by one end of the second fixing axle 12 and the first fixing piece 7, the second connection group
One end of part 10 is hinged by one end of third fixing axle 13 and the second fixing piece 8, the first fixing piece 7 and the second fixing piece 8
Top is equipped with the 4th fixing axle 14, one end far from the first fixing piece 7 of the first connection component 9 and the second connection component 10 far from the
One end of two fixing pieces 8 is hinged by the 4th fixing axle 14；Pass through the connection of the first fixing axle 11 so that 7 He of the first fixing piece
It can be rotated between second fixing piece 8, pass through the connection of the second fixing axle 12 so that the first fixing piece 7 and the first connection component 9
Between can rotate, pass through the connection of third fixing axle 13 so that can turn between the second fixing piece 8 and the second connection component 10
It is dynamic, pass through the connection of the 4th fixing axle 14 so that can rotate 10 between third connection component 9 and the 4th connection component.
First fixing piece 7 has included the first fixed plate 7a, the first fixinig plate 7b and the second fixinig plate 7c of fixed function, the
One fixinig plate 7b and the second fixinig plate 7c is symmetrical set and the first fixinig plate 7b and the second fixinig plate 7c are in be vertically installed at
The both ends of the both sides of first fixed plate 7a, the first fixinig plate 7b and the second fixinig plate 7c are equipped with the first mounting hole；Pass through first
First fixing piece 7 can be mounted on different objects by fixed plate 7a, and the first mounting hole is solid for the first fixing axle 11 and second
Dead axle 12 passes through.
Second fixing piece 8 has included the second fixed plate 8a, third fixinig plate 8b and the 4th fixinig plate 8c of fixed function, the
Three fixinig plate 8b and the 4th fixinig plate 8c are symmetrical set and third fixinig plate 8b and the 4th fixinig plate 8c are in be vertically installed at
The both ends of the both sides of second fixed plate 8a, the first fixinig plate 7b and the second fixinig plate 7c are equipped with the second mounting hole；Pass through second
First fixing piece 7 can be mounted on different objects by fixed plate 8a, and the second mounting hole is solid for third fixing axle 13 and the 4th
Dead axle 14 passes through.
First connection component 9 includes the first connection sheet 9a and the second connection sheet 9b, the first connection sheet 9a and the second connection sheet
9b is equipped with the first connecting hole at the arranged symmetrically and both ends of the first connection sheet 9a and the second connection sheet 9b；First connecting hole is for the
Two fixing axles 12 and the 4th fixing axle 14 pass through.
Second connection component 10 includes third connection sheet 10a and the 4th connection sheet 10b, and third connection sheet 10a and the 4th connects
Contact pin 10b is equipped with the second connecting hole at the arranged symmetrically and both ends of third connection sheet 10a and the 4th connection sheet 10b；Second connects
Hole is connect to pass through for third fixing axle 13 and the 4th fixing axle 14.
First fixinig plate 7b, the second fixinig plate 7c, third fixinig plate 8b and the 4th fixinig plate 8c are equal in length, and first
The distance between fixinig plate 7b and the second fixinig plate 7c are more than the distance between third fixinig plate 8b and the 4th fixinig plate 8c.
First connection sheet 9a, the second connection sheet 9b, third connection sheet 10a and the 4th connection sheet 10b be equal in length and
More than the length of the first fixinig plate 7b, the second fixinig plate 7c, third fixinig plate 8b and the 4th fixinig plate 8c, the first connection sheet 9a and
The distance between second connection sheet 9b is less than the distance between third connection sheet 10a and the 4th connection sheet 10b；First connection sheet
9a, the second connection sheet 9b, third connection sheet 10a and the 4th connection sheet 10b length be more than the first fixinig plate 7b, the second fixinig plate
The length of 7c, third fixinig plate 8b and the 4th fixinig plate 8c make two objects being connect with the first fixing piece 7 and the second fixing piece 8
The angle bigger that body can rotate.
Connector 2d1 is made of metal material；Metal material has many advantages, such as that quality is hard, wear-resisting, anticorrosive, can make
With the longer time.
Operation principle：In the use of the present invention, by bolt will weed plough rake 2 and rotary cultivator 1 be rotatablely connected, filled by starting
Setting 6 offer power makes rotary cultivator 1 move, and during the motion, weeds cultivated rake 2 and is arranged to soil under the promotion of rotary cultivator 1,
In the operating condition, two overturning hydraulic stem 2e1 Work Promotes, two connector 2d1 so that the second rake aody 2b and third rake aody
2c is unfolded, so that weeding the length increase for ploughing rake 2, weeds the arrangement area for ploughing rake 2 to increase, accelerates the speed of consolidation
Degree can control two and adjust the work of hydraulic stem 4, control the level height of rake teeth 2a1, and 2 arrangement soil are harrowed to change to weed to plough
Depth.
It will be apparent to those skilled in the art that technical solution that can be as described above and design, make various other
Corresponding change and deformation, and all these changes and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (9)
1. a kind of more landform finishing rakes, it is characterised in that：Including rotary cultivator（1）With weed cultivated rake（2）, described to weed cultivated rake（2）'s
One end and rotary cultivator（1）Front end it is hinged, it is described to weed cultivated rake（2）Including the first rake aody（2a）, the second rake aody（2b）, third rake aody
（2c）, bindiny mechanism（2d）And switching mechanism（2e）, second rake aody（2b）With third rake aody（2c）Structure it is identical and
Two rake aodies（2b）With third rake aody（2c）In being symmetrically mounted on the first rake aody（2a）Both ends, first rake aody（2a）With second
Rake aody（2b）Pass through connection structure and the first rake aody（2a）It is fixedly connected, the switching mechanism（2e）Mounted on the first rake aody
（2a）Upper and switching mechanism（2e）With bindiny mechanism（2d）It is fixedly connected, first rake aody（2a）, the second rake aody（2b）With
Three rake aodies（2c）Front end be equipped with several rake teeths being equally arranged（2a1）, the rake teeth（2a1）In circular arc type and rake
Tooth（2a1）Front end in flat.
2. a kind of more landform finishing rakes according to claim 1, it is characterised in that：First rake aody（2a）Rear end
Equipped with the interconnecting piece for being secured to connection（2f）, the interconnecting piece（2f）Rear end be equipped with mounting hole（2f1）, interconnecting piece（2f）On
If there are two the hinged seats being symmetrical set（2f2）.
3. a kind of more landform finishing rakes according to claim 1, it is characterised in that：The bindiny mechanism（2d）Including two
A connector（2d1）, two connectors（2d1）It is separately mounted to the first rake aody（2a）With the second rake aody（2b）Between and the
One rake aody（2a）With third rake aody（2c）Between.
4. a kind of more landform finishing rakes according to claim 3, it is characterised in that：The switching mechanism（2e）Including two
A overturning hydraulic stem（2e1）, two overturning hydraulic stems（2e1）It is symmetrical set and two overturns hydraulic stems（2e1）Rear end it is equal
With the first rake aody（2a）It is hinged, two overturning hydraulic stems（2e1）Output end respectively with two connectors（2d1）It is hinged.
5. a kind of more landform finishing rakes according to claim 2, it is characterised in that：The rotary cultivator（1）Front end two
Side is equipped with connecting pole（3）, two connecting poles（3）It is in be vertically arranged, the rotary cultivator（1）Front end set there are two adjust liquid
Compression bar（4）, two adjusting hydraulic stems（4）Rear end respectively with two connecting poles（3）Upper end it is hinged, two adjusting hydraulic stems
（4）Front end respectively with two hinged seats（2f2）It is hinged.
6. a kind of more landform finishing rakes according to claim 1, it is characterised in that：The rotary cultivator（1）It is equipped with liquid
Pressure device, two overturning hydraulic stems（2e1）With two adjusting hydraulic stems（4）It is connect with hydraulic device.
7. a kind of more landform finishing rakes according to claim 1, it is characterised in that：The rotary cultivator（1）Lower end set
There are two traveling wheels（5）, two traveling wheels（5）Between be equipped with connecting shaft for connect the two, connecting shaft is located at rotary cultivator（1）
Lower end and connecting shaft and rotary cultivator（1）Rotation connection.
8. a kind of more landform finishing rakes according to claim 7, it is characterised in that：The rotary cultivator（1）Upper end set
There is launch device（6）, the launch device（6）It is sequentially connected with connecting shaft.
9. a kind of more landform finishing rakes according to claim 3, it is characterised in that：First rake aody（2a）, second
Rake aody（2b）, third rake aody（2c）And interconnecting piece（2f）It is made of metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234215.8A CN108307700A (en) | 2018-03-21 | 2018-03-21 | A kind of more landform finishing rakes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234215.8A CN108307700A (en) | 2018-03-21 | 2018-03-21 | A kind of more landform finishing rakes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108307700A true CN108307700A (en) | 2018-07-24 |
Family
ID=62899821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810234215.8A Pending CN108307700A (en) | 2018-03-21 | 2018-03-21 | A kind of more landform finishing rakes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108307700A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650903A (en) * | 2018-04-25 | 2018-10-16 | 石梦成 | A kind of efficient finishing rake of more landform of paddy agriculture |
| CN114472486A (en) * | 2022-01-12 | 2022-05-13 | 河南省环境修复研究院有限公司 | Reciprocating motion type multi-depth soil pollution treatment restoration device |
-
2018
- 2018-03-21 CN CN201810234215.8A patent/CN108307700A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650903A (en) * | 2018-04-25 | 2018-10-16 | 石梦成 | A kind of efficient finishing rake of more landform of paddy agriculture |
| CN114472486A (en) * | 2022-01-12 | 2022-05-13 | 河南省环境修复研究院有限公司 | Reciprocating motion type multi-depth soil pollution treatment restoration device |
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Application publication date: 20180724 |