CN108668526A - A kind of pneumatic soil subsoiling head and its working method - Google Patents
A kind of pneumatic soil subsoiling head and its working method Download PDFInfo
- Publication number
- CN108668526A CN108668526A CN201810630061.4A CN201810630061A CN108668526A CN 108668526 A CN108668526 A CN 108668526A CN 201810630061 A CN201810630061 A CN 201810630061A CN 108668526 A CN108668526 A CN 108668526A
- Authority
- CN
- China
- Prior art keywords
- end cover
- shell
- gas
- soil
- spray
- 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.)
- Granted
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
- A01B1/00—Hand tools
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 invention discloses a kind of pneumatic soil subsoiling heads and its working method, the present invention to be provided with baffle inside housings, when baffle is in different angle, can be turned on and off spray-hole.When spraying bore closure, high pressure air pressure acts on lower end piston face, and equipment is buried；When spray-hole is opened, compressed gas is then sprayed from spray-hole, realize that gas explosion is loosened the soil, the Zao Tu mechanisms of piston and spring composition in the present apparatus, when pulse pressure acts on piston, the up and down motion of Zao Tu mechanisms carries out chisel digging to soil, matches pushing of the bonding force to shell, subsoiling head can be made to easily insert soil.The problems such as present apparatus both can be used to loosen the soil or for burying, and solves equipment in the prior art and buries that difficult, equipment stress is excessive, stress concentration, makes resistance be evenly distributed, buries and be more prone to.
Description
Technical field
The invention belongs to mechanical soil subsoiling fields, and in particular to a kind of pneumatic soil subsoiling head and its working method.
Background technology
Soil subsoiling refers to using external force chesson, breaks plough sole, improves topsoil structure, enhancing soil water storage soil moisture conservation
One farming technique of ability of draining flooded fields with drought resisting.Carry out subsoiling earth working and be conducive to crop growth, is to improve farming produce
One of the important means of amount.In agricultural production, soil subsoiling operation mainly uses traditional subsoiling machine operation, such as shovel type deep loosening
Machine, Viberation deep coosener etc..A kind of subsoiling mode for spraying explosion earth using compressed gas was risen in recent years, by air gun indentation and high pressure
Gas ejection is used cooperatively.There are the following problems for the common subsoiling mode of both the above：
One, traditional subsoiling mode utilizes tractor-drawn subsoiling equipment, and body is heavy, and technology is single, and application range is small simultaneously
And energy consumption is bigger.
Two, air gun is pressed into soil by emerging gas explosion subsoiling mode by external force such as hydraulic cylinder or pneumatic cylinders, is then sprayed
High pressure gas shatters surrounding soil, to achieve the effect that subsoiling.Depth of implements relative increase under this kind of mode has and makees
The features such as industry range is wide, and subsoiling is uniform.But it is using mode of burying is forced, and it is dumb that there are still the modes of burying, difficulty of burying, and makees
The problems such as industry depth is limited, and mounting and adjusting is difficult.
Invention content
The purpose of the present invention is to overcome the above shortcomings and to provide a kind of pneumatic soil subsoiling head and its working methods, increase
Liao Zaotu mechanisms and gas port switching mechanism, pulse gas are both used for loosening the soil or for burying, solve equipment in the prior art and enter
The problems such as native difficulty, equipment stress are excessive, stress concentration, effectively prevents the mode for forcing to bury.
In order to achieve the above object, a kind of pneumatic soil subsoiling head, including shell offer several windows on the axial plane of shell
Mouthful, several prismatics are both provided in each window, spray-hole are provided between adjacent prismatic, shell is provided with can
The baffle for making spray-hole be connected to or disconnect with space in shell, case top are provided with upper end cover, and housing bottom is provided with lower end
Lid, upper end cover are inserted into the gas-guide tube being connected to space in shell, are provided with piston in bottom end cover, piston passes through spring and bottom end cover
Bottom surface connects, and mast is provided on piston, and piston connects the cone steel toe outside bottom end cover by mast.
Upper end cover includes the second upper end cover being connect with shell, is provided with the first upper end cover on the second upper end cover, on first
It is provided with annular groove on end cap, gas-guide tube passes through annular groove to be inserted into shell, is filled with graphite packing between gas-guide tube and annular groove, on first
It is provided on end cap for fixing gas-guide tube and compacted graphite packing gland.
Handle slot is offered on upper end cover, and the handle that can be slided in handle slot, handle connection are provided in handle slot
Baffle.
Handle connects swing rod, and swing rod connects pneumatic cylinder, and pneumatic cylinder is for driving swing rod to drive handle motion.
First upper end cover is bolted with the second upper end cover.
Sliding slot is offered on upper end cover, is placed in sliding slot at the top of baffle, baffle is fitted closely with inner walls.
It is Venturi tube structure inside gas-guide tube.
A kind of working method of pneumatic soil subsoiling head, when in bury operating mode when, so that baffle is covered spray-hole, connect high
Calm the anger body when, gas by gas-guide tube flow into shell and baffle inside, since spray-hole is by flapper closure, gas cannot spray
Go out, can only flow downward and act on the upper surface of piston, piston is moved downward along inner walls, passes through strut band movable cone steel toe
It is inserted into soil, after disconnecting high pressure gas, piston sets back under the action of the spring, in the intermittent action of high voltage pulse gas
Under, piston and cone steel toe constantly up and down reciprocatingly, to soil carry out digging chisel；
When in quick-fried operating mode is sprayed, baffle deviates, and shell is made to be connected to spray-hole, when connecting high pressure gas, high voltage pulse
Gas is also sprayed from spray-hole, is burst, is achieved the purpose that soil subsoiling to surrounding soil.
Handle connects swing rod, and swing rod connects pneumatic cylinder；
When burying operating mode and spraying the switching of quick-fried operating mode, pneumatic cylinder stretches out, and swing rod drives handle rotation, and baffle 5 is made to be in pair
Answer position.
Compared with prior art, the present invention is provided with baffle inside housings, when baffle is in different angle, can will spray
Perforation is turned on and off.When spraying bore closure, high pressure air pressure acts on lower end piston face, and equipment is buried；Work as injection
When hole is opened, compressed gas is then sprayed from spray-hole, realizes that gas explosion is loosened the soil, the chisel soil machine of piston and spring composition in the present apparatus
Structure, when pulse pressure acts on piston, the up and down motion of Zao Tu mechanisms carries out chisel digging to soil, with bonding force under shell
Pressure, can make subsoiling head easily insert soil.The present apparatus both can be used to loosen the soil or for burying, solve equipment in the prior art
The problems such as burying, difficult, equipment stress is excessive, stress concentration, makes resistance be evenly distributed, buries and be more prone to.
Further, baffle of the invention is controlled by handle, in actual operation can be according to for different soil rings
The opening angle of regulation handle is carried out in border, to which the corresponding gas window for opening size of selection carries out soil subsoiling work, reach " because
The effect of ground construction ".
The method of the present invention in bury operating mode when, used piston and spring to form Zao Tu mechanisms, reduced and bury
Difficulty, alleviate the phenomenon that burying equipment stress concentration；When in quick-fried operating mode is sprayed, the gas by being inserted into enclosure interior is kept off
Plate is turned on and off high voltage pulse gas.When baffle blocks pulse gas, subsoiling head is used for burying, and baffle discharges pulse
When gas, subsoiling head is then used for the subsoiling of soil.Operating mode of burying can be with any switching laws with the quick-fried operating mode of spray, and are directed to different soil
Earth environment can select the gas of different flow size to work.High voltage pulse gas is carried out auxiliary machine tool as power to enter
Soil reduces difficulty of burying, and improves efficiency of burying, and increases depth of implements, and expand job area.
Description of the drawings
Fig. 1 is the longitdinal cross-section diagram of the present invention；
Fig. 2 is the vertical view of the present invention；
Fig. 3 is the control system figure of grip switches of the present invention；
Fig. 4 is the cross-sectional view of the invention being in when burying operating mode；
Fig. 5 is the present invention in cross-sectional view when spraying quick-fried operating mode；
Fig. 6 is the space diagram of gas baffle.
In figure, 1. glands, 2. graphite packings, 3. gas-guide tubes, 4. windows, 5. baffles, 6. masts, 7. cone steel toes, 8.
Hand, 9. first upper end covers, 10. second upper end covers, 11. shells, 12. spray-holes, 13. prismatics, 14. pistons, 15. springs,
16. bottom end cover, 17. bolts, 18. handle slots, 19. swing rods, 20. pneumatic cylinders.
Specific implementation mode
The present invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig. 1, Fig. 2 and Fig. 6, the present invention includes the gas-guide tube 3 of conveying high-pressure air-flow, and 3 inside of gas-guide tube is venturi
Structure, gas-guide tube 3 are fixed on the centre of the first upper end cover 9 and the second upper end cover 10 by gland 1.On gas-guide tube 3 and first
It is equipped with annular groove between end cap 9, graphite plate root 2 is filled in annular groove, graphite packing 2 is compacted and matches with the sliding of gas-guide tube 3 by gland 1
It closes.It is provided with sliding slot on the downside of upper end cover and places baffle 5, the first upper end cover 9 and the second upper end cover 10 are fastenedly connected by bolt 17, spiral shell
Bolt 17 is uniformly distributed in upper end cover, and the handle slot 18 of fixed angle is provided on the first upper end cover 9 and the second upper end cover 10.Second
Upper end cover 10 with shell 11 is concentric is welded and fixed, 11 outer wall of shell is equipped with prismatic 13, identical as hull outside lines, is inserted into
Can be by the preliminary fragmentation of soil when soil, and have the function of guiding of burying.11 outer wall of shell is uniformly distributed multiple spray-holes 12, work
High pressure gas is sprayed from spray-hole 12 when making.11 inner hollow of shell is inserted with baffle 5, piston 14 is housed inside 11 lower end of shell
With spring 15, piston 14 and spring 15 are fixed on by bottom end cover 16 inside shell 11, and 14 lower end of piston connects one by mast 6
A cone steel toe 7, when high pressure gas acts on 14 upper surface of piston, piston 14 is logical by the elastic force of gas pressure and spring 15
Mast 6 is crossed to pump with movable cone steel toe 7.
Referring to Fig. 1 and Fig. 5, baffle 5 of the invention is fitted closely with 11 inner wall of shell, and the top of baffle 5 is welded with handle 8,
5 upper end of baffle is fixed in the sliding slot of the first upper end cover 9, and the lower end of baffle 5 is fixed in the sliding slot of 11 inner wall of shell, baffle 5
It is rotated in sliding slot by the control of handle 8.5 surrounded surface of baffle uniformly opens up four windows 4, when window 4 is connected to spray-hole 12,
High voltage pulse gas injection and go out, when window 4 and spray-hole 12 misplace, high voltage pulse gas then can only be in 11 inside stream of shell
It is dynamic.
Referring to Fig. 1 and Fig. 3, when the present invention, which is in, buries operating mode, pneumatic cylinder 20 stretches out, and swing rod 19 drives handle 8 to rotate,
Make position shown in Fig. 4 at baffle 5, window 4 misplaces with spray-hole 12 at this time.When connecting high pressure gas, gas passes through gas-guide tube 3
The inside of shell 11 and baffle 5 is flowed into, since spray-hole 12 is closed by baffle 5, gas cannot spray, and can only flow downward effect
In the upper surface of piston 14, piston 14 is moved downward along 11 inner wall of shell, is inserted into soil with movable cone steel toe 7 by mast 6, is broken
After opening high pressure gas, piston 14 sets back under the action of spring 15.Under the intermittent action of high voltage pulse gas, piston 14
Constantly up and down reciprocatingly with cone steel toe 7, digging chisel is carried out to soil.Gas explosion head just easily can be inserted into ground by the smaller external force of cooperation
Bottom depths.This methods has used piston 14 and spring 15 to form Zao Tu mechanisms, reduces the difficulty buried, alleviates and bury
The phenomenon that equipment stress concentration.
Referring to Fig. 1 and Fig. 3, when the present invention is in the quick-fried operating mode of spray, subsoiling head has been inserted in depth needed for ground end, air pressure at this time
Cylinder 20 is retracted, and swing rod 19 drives handle 8 to rotate, and makes position shown in Fig. 5 at baffle 5, and window 4 is connected to spray-hole 12 at this time,
High voltage pulse gas is also sprayed from spray-hole 12, is burst, is achieved the purpose that soil subsoiling to surrounding soil.The present invention is logical
The gas baffle for crossing insertion enclosure interior is turned on and off high voltage pulse gas.When baffle blocks pulse gas, subsoiling
Head is used for burying, and when baffle discharges pulse gas, subsoiling head is then used for the subsoiling of soil.Operating mode of burying can appoint with subsoiling operating mode
Meaning switching, and the gas of different flow size can be selected to work for different soil environments.By high voltage pulse gas
Body carrys out auxiliary machine tool as power and buries, and reduces difficulty of burying, improves efficiency of burying, and increases depth of implements, and expand
Big job area.
Claims (9)
1. a kind of pneumatic soil subsoiling head, which is characterized in that including shell (11), several windows are offered on the axial plane of shell (11)
Mouth (4), each window (4) is interior to be both provided with several prismatics (13), and adjacent prismatic is provided with spray-hole between (13)
(12), shell (11) is provided with the baffle (5) that spray-hole (12) can be made to be connected to or disconnect with shell (11) interior space, shell
(11) top is provided with upper end cover, and shell (11) bottom is provided with bottom end cover (16), and upper end cover is inserted into and shell (11) interior space
The gas-guide tube (3) of connection, bottom end cover (16) is interior to be provided with piston (14), and piston (14) passes through spring (15) and bottom end cover (16) bottom
Face connects, and mast (6) is provided on piston (14), and piston (14) connects the cone steel toe of bottom end cover (16) outside by mast (6)
(7)。
2. a kind of pneumatic soil subsoiling head according to claim 1, which is characterized in that upper end cover includes connecting with shell (11)
The second upper end cover (10) connect is provided with the first upper end cover (9) on the second upper end cover (10), and the first upper end cover is provided on (9)
Annular groove, gas-guide tube (3) pass through annular groove to be inserted into shell (11), gas-guide tube (3) annular groove between filled with graphite packing (2), first
It is provided on upper end cover (9) for fixing gas-guide tube (3) and compacted graphite packing (2) gland (1).
3. a kind of pneumatic soil subsoiling head according to claim 1 or 2, which is characterized in that offer handle on upper end cover
Slot (18), handle slot (18) is interior to be provided with the handle (8) that can be slided in handle slot (18), and handle (8) connects baffle (5).
4. a kind of pneumatic soil subsoiling head according to claim 3, which is characterized in that handle (8) connects swing rod (19), pendulum
Bar (19) connects pneumatic cylinder (20), and pneumatic cylinder (20) is for driving swing rod (19) that handle (8) is driven to move.
5. a kind of pneumatic soil subsoiling head according to claim 2, which is characterized in that on the first upper end cover (9) and second
End cap (10) is fixed by bolt (17).
6. a kind of pneumatic soil subsoiling head according to claim 1, which is characterized in that offer sliding slot on upper end cover, keep off
It is placed in sliding slot at the top of plate (5), baffle (5) is fitted closely with shell (11) inner wall.
7. a kind of pneumatic soil subsoiling head according to claim 1, which is characterized in that be venturi inside gas-guide tube (3)
Structure.
8. a kind of working method of pneumatic soil subsoiling head described in claim 1, which is characterized in that when in operating mode of burying
When, so that baffle (5) is covered spray-hole (12), when connecting high pressure gas, gas flows into shell (11) and baffle by gas-guide tube (3)
(5) inside, since spray-hole (12) is closed by baffle (5), gas cannot spray, can only flow downward and act on piston (14)
Upper surface, piston (14) moves downward along shell (11) inner wall, is inserted into soil by mast (6) band movable cone steel toe (7), breaks
After opening high pressure gas, piston (14) sets back under the action of spring (15), living under the intermittent action of high voltage pulse gas
It fills in (14) and cone steel toe (7) constantly up and down reciprocatingly, digging chisel is carried out to soil；
When in quick-fried operating mode is sprayed, baffle (5) deviates, and shell (11) is made to be connected to spray-hole (12), when connecting high pressure gas, arteries and veins
It rushes high pressure gas also to spray from spray-hole (12), bursts, achieve the purpose that soil subsoiling to surrounding soil.
9. a kind of working method of pneumatic soil subsoiling head according to claim 1, which is characterized in that handle (8) connects
Swing rod (19), swing rod (19) connect pneumatic cylinder (20)；
When burying operating mode and spraying quick-fried operating mode switching, pneumatic cylinder (20) stretches out, and swing rod (19) drives handle (8) to rotate, and makes baffle
(5) it is in corresponding position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630061.4A CN108668526B (en) | 2018-06-19 | 2018-06-19 | Pneumatic soil deep loosening head and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630061.4A CN108668526B (en) | 2018-06-19 | 2018-06-19 | Pneumatic soil deep loosening head and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108668526A true CN108668526A (en) | 2018-10-19 |
| CN108668526B CN108668526B (en) | 2023-07-18 |
Family
ID=63811308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810630061.4A Active CN108668526B (en) | 2018-06-19 | 2018-06-19 | Pneumatic soil deep loosening head and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108668526B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109348766A (en) * | 2018-12-11 | 2019-02-19 | 成都市农林科学院 | A method of soil subsoiling is carried out based on pulse gas explosion |
| CN109479417A (en) * | 2018-11-08 | 2019-03-19 | 张锐 | It is a kind of directly soil remediation deep soil to be promoted to add fertile device |
| CN109479404A (en) * | 2018-11-14 | 2019-03-19 | 黑龙江八农垦大学 | Environment protection type soil is intubated gas permeable devices |
| CN111837762A (en) * | 2020-07-28 | 2020-10-30 | 滁州联润生态农业发展有限公司 | Movable cultivation bed for modern greenhouse |
| CN114733896A (en) * | 2022-01-06 | 2022-07-12 | 徐平 | Root system divergent growth type alkaline soil restoration pile |
| CN117256224A (en) * | 2023-10-12 | 2023-12-22 | 邹城市自然资源和规划局 | Soil loosening device for soil arrangement |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007308932A (en) * | 2006-05-17 | 2007-11-29 | Ok Soil:Kk | Soil improvement method |
| US20130119684A1 (en) * | 2011-11-10 | 2013-05-16 | Louis Ceja | Shovel |
| CN205232699U (en) * | 2015-11-19 | 2016-05-18 | 四川天本生物技术有限公司 | From soil of taking headstock gear head loose deeply |
| CN107347259A (en) * | 2017-08-22 | 2017-11-17 | 钱娟娟 | Air assisted formula function garden shovel |
| CN108093684A (en) * | 2017-12-28 | 2018-06-01 | 苏州乐米凡电气科技有限公司 | A kind of environmental protection greening digger blade |
| CN208317268U (en) * | 2018-06-19 | 2019-01-04 | 长安大学 | A kind of pneumatic soil subsoiling head |
-
2018
- 2018-06-19 CN CN201810630061.4A patent/CN108668526B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007308932A (en) * | 2006-05-17 | 2007-11-29 | Ok Soil:Kk | Soil improvement method |
| US20130119684A1 (en) * | 2011-11-10 | 2013-05-16 | Louis Ceja | Shovel |
| CN205232699U (en) * | 2015-11-19 | 2016-05-18 | 四川天本生物技术有限公司 | From soil of taking headstock gear head loose deeply |
| CN107347259A (en) * | 2017-08-22 | 2017-11-17 | 钱娟娟 | Air assisted formula function garden shovel |
| CN108093684A (en) * | 2017-12-28 | 2018-06-01 | 苏州乐米凡电气科技有限公司 | A kind of environmental protection greening digger blade |
| CN208317268U (en) * | 2018-06-19 | 2019-01-04 | 长安大学 | A kind of pneumatic soil subsoiling head |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109479417A (en) * | 2018-11-08 | 2019-03-19 | 张锐 | It is a kind of directly soil remediation deep soil to be promoted to add fertile device |
| CN109479404A (en) * | 2018-11-14 | 2019-03-19 | 黑龙江八农垦大学 | Environment protection type soil is intubated gas permeable devices |
| CN109348766A (en) * | 2018-12-11 | 2019-02-19 | 成都市农林科学院 | A method of soil subsoiling is carried out based on pulse gas explosion |
| CN111837762A (en) * | 2020-07-28 | 2020-10-30 | 滁州联润生态农业发展有限公司 | Movable cultivation bed for modern greenhouse |
| CN114733896A (en) * | 2022-01-06 | 2022-07-12 | 徐平 | Root system divergent growth type alkaline soil restoration pile |
| CN114733896B (en) * | 2022-01-06 | 2023-08-18 | 云南俏铌俏生物技术有限公司 | Root system divergent growth type alkaline soil restoration pile |
| CN117256224A (en) * | 2023-10-12 | 2023-12-22 | 邹城市自然资源和规划局 | Soil loosening device for soil arrangement |
| CN117256224B (en) * | 2023-10-12 | 2024-02-23 | 邹城市自然资源和规划局 | Soil loosening device for soil arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108668526B (en) | 2023-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108668526A (en) | A kind of pneumatic soil subsoiling head and its working method | |
| CN106688408B (en) | A kind of orchard is self-propelled to deepen displacement variable-rate fertilization | |
| CN105052676B (en) | A kind of integral type automatic drill filling device | |
| CN213462908U (en) | Explosion-spraying type orchard deep-loosening and deep-fertilizing machine | |
| CN109348766B (en) | Method for soil deep scarification based on pulse gas explosion | |
| CN208317268U (en) | A kind of pneumatic soil subsoiling head | |
| CN208175302U (en) | A kind of multi-functional Tree-planting device | |
| CN102986339A (en) | Hole digger | |
| CN101063401B (en) | Internal combustion fluid jet boring device | |
| CN112088614B (en) | Trees are planted with device that can conveniently dig pit | |
| CN207127836U (en) | Valveless booster-type pneumatic spade and its gas handling system | |
| CN106358983B (en) | A kind of the Premixed Abrasive Water Jet equipment on the tree grafting growth of mountain area | |
| KR101049867B1 (en) | Soil improvement device and vehicle equipped with it | |
| CN108194021A (en) | A kind of vertical rock drilling device with depositing dust function | |
| CN108849374B (en) | Mud ball forming device for tree transplantation | |
| CN205143073U (en) | Hand -held type trees root system excavating equipment | |
| CN107234596A (en) | Valveless booster-type pneumatic spade and its gas handling system | |
| CN203675574U (en) | Spiral drill of orchard trenching fertilizer applicator | |
| CN106416540B (en) | A kind of submerged plant planting tool | |
| CN205100888U (en) | Crowded integrative drilling rod of row's of filling sediment that expands is dug soon to formula of cup jointing | |
| CN112267505B (en) | Continuous wall grab bucket device and control method thereof | |
| CN212138306U (en) | Walnut is planted with earthing equipment of digging a pit | |
| CN209722947U (en) | A kind of impingement Prefabricated hollow pile forming root pile and stake bottom susceptor | |
| CN207626027U (en) | A kind of lawn punching fertilization all-in-one machine | |
| CN208370174U (en) | A kind of pit-picker for transplanting tree |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |