CN110122254A - A kind of automatic plant lifter of forestry sapling - Google Patents
A kind of automatic plant lifter of forestry sapling Download PDFInfo
- Publication number
- CN110122254A CN110122254A CN201910337970.3A CN201910337970A CN110122254A CN 110122254 A CN110122254 A CN 110122254A CN 201910337970 A CN201910337970 A CN 201910337970A CN 110122254 A CN110122254 A CN 110122254A
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- China
- Prior art keywords
- table mechanism
- electric cylinders
- gear
- servo electric
- column
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G23/00—Forestry
- A01G23/02—Transplanting, uprooting, felling or delimbing trees
- A01G23/06—Uprooting or pulling up trees; Extracting or eliminating stumps
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Environmental Sciences (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a kind of automatic plant lifters of forestry sapling, by being equipped with universal wheel in the bottom of lower frame, and are equipped with arrestment mechanism on universal wheel, can be realized moving freely for equipment；By setting sliding slot, ball screw, feed screw nut, sliding block, first through hole and clockwise and anticlockwise motor, sliding up and down for table mechanism can be realized, enable a device to realize lift capability, so that equipment is more convenient to use quick；By setting rack gear and first gear, can be assisted in table mechanism lifting process, so that table mechanism lifting process is more stable；By setting servo motor, second gear, third gear and cutterhead mounting rack, it can be realized cutterhead mounting rack and rotated nursery stock with native lifting, it is convenient and efficient；By the first servo electric cylinders of setting, the second servo electric cylinders and clamping device, lifting knife can be tightened in lifting, and then fasten sapling, so that the quality of sapling is good, survival rate is high.
Description
Technical field
The present invention relates to sapling implantation technique field, specially a kind of automatic plant lifter of forestry sapling.
Background technique
Forestry, which refers to preserve the ecological environment, keeps ecological balance, and cultivates and conserves forests to obtain timber and other forest productss
Product, the production division that protective action is played using the natural characteristic of forest, are one of important components of national economy.Woods
Industry, by advanced science and technology and management means, is engaged in cultivation, protection, using the forest reserves, sufficiently in people and biosphere
A variety of benefits of forest, and the energy going concern forest reserves are played, population, economy, society, environment and resource coordination development are promoted
Infrastructural industries and work for the public good.
Sapling also abbreviation nursery stock, various fruit tree seedlings, the general name of arbor, shrub seedling.Sapling: the tree with root system and seedling stem
Seedling.No matter all sapling age sizes cultivated in nursery, before not being out of the garden, all claim sapling.
Lifting is the key link of outplanting, and the success rate of lifting directly affects the quality of nursery stock.When nursery stock grows to one
Fixed height, when needing to transplant, traditional seedling-growing method that rises carries out lifting, digging seedling, this artificial mode generally by artificial
Speed is slow, low efficiency, work consuming are time-consuming and is unfavorable for the saving of labour cost, and can not company of progress root lifting well, influence
The survival rate of sapling.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the existing defects, provides a kind of automatic plant lifter of forestry sapling, can
Effectively to solve the problems in background technique.
To achieve the above object, the invention provides the following technical scheme: a kind of automatic plant lifter of forestry sapling, including machine
Frame, the bottom of the rack are equipped with lower frame, and the lower frame is U-shaped frame, and the bottom of the lower frame is equipped with universal wheel, described
Universal wheel is equipped with arrestment mechanism, and both ends are symmetrically arranged with the first column at the top of the U-shaped frame, and the U-shaped frame top is in two institutes
It states and is equipped with the second column between the first column, the adjacent side of two the first column inner walls is vertically symmetrical to be equipped with sliding slot, described
The same crossbeam is equipped at the top of second column and two first columns, the cross rail top is equipped with control box, the control
Box is equipped with touch screen and several buttons, and the sliding slot inner vertical is equipped with the ball screw being flexibly connected, the ball wire
Matching is equipped with the feed screw nut being flexibly connected on bar, and the cross rail top is equipped with clockwise and anticlockwise motor above the ball screw,
The clockwise and anticlockwise motor output shaft runs through the crossbeam and extends on the inside of the sliding slot to be connect with described ball screw one end, and two
Between a first column be equipped be flexibly connected table mechanism, the both ends of the table mechanism be symmetrically arranged with it is described
The sliding block that sliding slot matches, the slider top offer the first through hole to match with the ball screw, the screw rod spiral shell
Female to be fixedly connected with the sliding block, the second column outer wall is equipped with rack gear, the work close to the table mechanism side
Platform mechanism outer wall is equipped with the first gear that is meshed with the rack gear close to second column side, in the table mechanism
Portion center is equipped with the first installation cavity, and the first installation cavity matching internal is equipped with cutterhead mounting rack, the table mechanism top
Several connecting rods are equipped with above the cutterhead mounting rack, several connecting rods are connected with the same holding ring, the cutterhead
Mounting rack bottom is equipped with several lifting knives, and the second through-hole, institute are equipped with below the holding ring at the top of the table mechanism
Cutterhead mounting rack top center is stated equipped with third through-hole, is equipped with the inside the table mechanism on the outside of first installation cavity
Two installation cavitys, the second installation cavity matching internal are equipped with the clamping device being flexibly connected, and the table mechanism top is in institute
Several the first servo electric cylinders on the outside of cutterhead mounting rack are stated, the first servo electric cylinders extend to institute through the table mechanism
It states and is connect inside the second installation cavity at the top of the clamping device, servo motor is equipped at the top of the table mechanism, it is described to watch
It takes motor output shaft and extends to first installation cavity side equipped with second gear, the cutterhead peace through the table mechanism
It shelves outer wall and is arranged with the third gear being meshed with the second gear, the clamping device includes annular disk, the annular
Disk inner wall is equipped with opening, and the annular disk inside outer wall is equipped with several the second servo electric cylinders, described second servo electric cylinders one end
It is connected with arc grip block, the clockwise and anticlockwise motor, the first servo electric cylinders, the servo motor and second servo electricity
Cylinder is connect with the control box respectively.
As a preferred technical solution of the present invention, the arrestment mechanism is fluid pressure type arrestment mechanism, the fluid pressure type
Elastic component is had on arrestment mechanism.
As a preferred technical solution of the present invention, the second column outer wall is equipped with handrail far from the rack gear side
Frame.
As a preferred technical solution of the present invention, it is equipped with and the first servo electric cylinders at the top of the table mechanism
The fixed frame to match.
As a preferred technical solution of the present invention, it is equipped at the top of the sliding slot inner wall and matches with the ball screw
First bearing seat, sliding slot inner wall bottom is equipped with the second bearing seat that matches with the ball screw.
As a preferred technical solution of the present invention, it is equipped with and the first servo electric cylinders phase at the top of the clamping device
Matched first connection frame.
As a preferred technical solution of the present invention, the arc grip block outer wall is equipped with and the second servo electric cylinders
The second connection frame to match.
As a preferred technical solution of the present invention, cross rail top matching on the outside of the control box is equipped with activity
The shield of connection, the shield are made of tempered glass materials.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention is by being equipped with universal wheel in the bottom of lower frame, and arrestment mechanism is equipped on universal wheel, can be realized and sets
Standby moves freely, so that equipment is more convenient to use quick.
2, the present invention, can by setting sliding slot, ball screw, feed screw nut, sliding block, first through hole and clockwise and anticlockwise motor
It realizes sliding up and down for table mechanism, enables a device to realize lift capability, so that equipment is more convenient to use quick.
3, the present invention can be assisted by setting rack gear and first gear in table mechanism lifting process, so that
Table mechanism lifting process is more stable.
4, the present invention can be realized cutterhead peace by setting servo motor, second gear, third gear and cutterhead mounting rack
It shelves and is rotated nursery stock with native lifting, it is convenient and efficient.
5, the present invention is by the first servo electric cylinders of setting, the second servo electric cylinders and clamping device, can be in lifting to rising
Seedling knife is tightened, and then fastens sapling, so that the quality of sapling is good, survival rate is high.
Detailed description of the invention
Fig. 1 is a kind of main view of the automatic plant lifter of forestry sapling of the present invention；
Fig. 2 is a kind of main view of the automatic plant lifter table mechanism of forestry sapling of the present invention；
Fig. 3 is a kind of top view of the automatic plant lifter table mechanism of forestry sapling of the present invention；
Fig. 4 is a kind of top view of the automatic plant lifter cutterhead mounting rack of forestry sapling of the present invention；
Fig. 5 is a kind of top view of the automatic plant lifter clamping device of forestry sapling of the present invention.
In figure: 1, rack；2, lower frame；3, universal wheel；4, arrestment mechanism；5, the first column；6, sliding slot；7, crossbeam；8,
Control box；9, touch screen；10, button；11, ball screw；12, feed screw nut；13, clockwise and anticlockwise motor；14, table mechanism；
15, sliding block；16, first through hole；17, the second column；18, rack gear；19, first gear；20, the first installation cavity；21, cutterhead is installed
Frame；22, connecting rod；23, holding ring；24, lifting knife；25, the second through-hole；26, third through-hole；27, the second installation cavity；28, it presss from both sides
Hold mechanism；29, the first servo electric cylinders；30, servo motor；31, second gear；32, third gear；33, annular disk；34, second
Servo electric cylinders；35, arc grip block.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-5 is please referred to, the present invention provides a kind of technical solution: a kind of automatic plant lifter of forestry sapling, including rack 1,
The bottom of the rack 1 is equipped with lower frame 2, and the lower frame 2 is U-shaped frame, and the bottom of the lower frame 2 is equipped with universal wheel 3, institute
Universal wheel 3 is stated equipped with arrestment mechanism 4, U-shaped frame top both ends are symmetrically arranged with the first column 5, and the U-shaped frame top is in two
The second column 17 is equipped between a first column 5, vertically symmetrical be equipped in the adjacent side of two 5 inner walls of the first column is slided
It is equipped with the same crossbeam 7 at the top of slot 6, second column 17 and two first columns 5, is equipped with control at the top of the crossbeam 7
Box 8 processed, the control box 8 are equipped with touch screen 9 and several buttons 10, and 6 inner vertical of sliding slot is equipped with flexible connection
Ball screw 11, matching is equipped with the feed screw nut 12 being flexibly connected on the ball screw 11, and 7 top of crossbeam is in the rolling
Clockwise and anticlockwise motor 13 is equipped with above ballscrew 11,13 output shaft of clockwise and anticlockwise motor is through the crossbeam 7 and extends to described
6 inside of sliding slot is connect with described 11 one end of ball screw, and the workbench machine being flexibly connected is equipped between two first columns 5
Structure 14, the both ends of the table mechanism 14 are symmetrically arranged with the sliding block 15 to match with the sliding slot 6, open at the top of the sliding block 15
Equipped with the first through hole 16 to match with the ball screw 11, the feed screw nut 12 is fixedly connected with the sliding block 15, institute
It states 17 outer wall of the second column and is equipped with rack gear 18 close to 14 side of table mechanism, 14 outer wall of table mechanism is close to institute
It states 17 side of the second column and is equipped with the first gear 19 being meshed with the rack gear 18,14 inside center of table mechanism is set
There is the first installation cavity 20,20 matching internal of the first installation cavity is equipped with cutterhead mounting rack 21,14 top of table mechanism
Several connecting rods 22 are equipped with above the cutterhead mounting rack 21, several connecting rods 22 are connected with the same holding ring 23,
21 bottom of cutterhead mounting rack is equipped with several lifting knives 24, and 14 top of table mechanism is in 23 lower section of holding ring
Equipped with the second through-hole 25,21 top center of cutterhead mounting rack is equipped with third through-hole 26, inside the table mechanism 14 in
The second installation cavity 27 is equipped on the outside of first installation cavity 20,27 matching internal of the second installation cavity is equipped with the folder being flexibly connected
Mechanism 28 is held, 14 top of table mechanism is described in described 21 several the first servo electric cylinders 29 of outside of cutterhead mounting rack
First servo electric cylinders 29 extend to 27 inside of the second installation cavity and the clamping device 28 through the table mechanism 14
Top connects, and servo motor 30 is equipped at the top of the table mechanism 14, and 30 output shaft of servo motor runs through the work
Platform mechanism 14 extends to 20 side of the first installation cavity equipped with second gear 31,21 outer wall of cutterhead mounting rack be arranged with
The third gear 32 that the second gear 31 is meshed, the clamping device 28 include annular disk 33,33 inner wall of annular disk
Equipped with opening, 33 inside outer wall of annular disk is equipped with several the second servo electric cylinders 34, described second servo electric cylinders, 34 one end
It is connected with arc grip block 35, the clockwise and anticlockwise motor 13, the first servo electric cylinders 29, the servo motor 30 and described
Two servo electric cylinders 34 are connect with the control box 8 respectively.
In the present embodiment, it is preferred that the arrestment mechanism 4 is fluid pressure type arrestment mechanism, on the fluid pressure type arrestment mechanism
With elastic component.
In the present embodiment, it is preferred that 17 outer wall of the second column is equipped with arm-rest frame far from 18 side of rack gear.
In the present embodiment, it is preferred that be equipped at the top of the table mechanism 14 and match with the first servo electric cylinders 29
Fixed frame.
In the present embodiment, it is preferred that be equipped with the first axle to match with the ball screw 11 at the top of 6 inner wall of sliding slot
Seat is held, the 6 inner wall bottom of sliding slot is equipped with the second bearing seat to match with the ball screw 11.
In the present embodiment, it is preferred that be equipped at the top of the clamping device 28 and match with the first servo electric cylinders 29
First connection frame.
In the present embodiment, it is preferred that 35 outer wall of arc grip block is equipped with to match with the second servo electric cylinders 34
The second connection frame.
In the present embodiment, it is preferred that 7 top of crossbeam matching on the outside of the control box 8 is equipped with the anti-of flexible connection
Shield, the shield are made of tempered glass materials.
The present invention is equipped with arrestment mechanism 4 by being equipped with universal wheel 3 in the bottom of lower frame 2 on universal wheel 3, can
Moving freely for equipment is realized, so that equipment is more convenient to use quick；By the way that sliding slot 6, ball screw 11, feed screw nut is arranged
12, sliding block 15, first through hole 16 and clockwise and anticlockwise motor 13, can be realized sliding up and down for table mechanism 14, enable the device to
Lift capability is enough realized, so that equipment is more convenient to use quick；It, can be in workbench by setting rack gear 18 and first gear 19
It is assisted in 14 lifting process of mechanism, so that 14 lifting process of table mechanism is more stable；By setting servo motor 30,
Second gear 31, third gear 32 and cutterhead mounting rack 21 can be realized cutterhead mounting rack 21 and rotated nursery stock band soil
Seedling, it is convenient and efficient；It, can be in lifting pair by the first servo electric cylinders 29 of setting, the second servo electric cylinders 34 and clamping device 28
Lifting knife 24 is tightened, and then fastens sapling, so that the quality of sapling is good, survival rate is high；The trees plant lifter structure is simple,
Conveniently moving, swift to operate, it can be achieved that sapling, can be connected root lifting by descending operation, sapling survival rate is high.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of automatic plant lifter of forestry sapling, including rack (1), it is characterised in that: the bottom of the rack (1) is equipped with lower frame
Frame (2), the lower frame (2) are U-shaped frame, and the bottom of the lower frame (2) is equipped with universal wheel (3), sets on the universal wheel (3)
Have arrestment mechanism (4), both ends are symmetrically arranged with the first column (5) at the top of the U-shaped frame, in two described the at the top of the U-shaped frame
The second column (17) are equipped between one column (5), the adjacent side of two the first column (5) inner walls is vertically symmetrical to be equipped with sliding slot
(6), the same crossbeam (7) are equipped at the top of second column (17) and two first columns (5), crossbeam (7) top
Portion is equipped with control box (8), and the control box (8) is equipped with touch screen (9) and several buttons (10), and the sliding slot (6) is internal
Vertical to be equipped with the ball screw (11) being flexibly connected, matching is equipped with the feed screw nut being flexibly connected on the ball screw (11)
(12), clockwise and anticlockwise motor (13) are equipped with above the ball screw (11) at the top of the crossbeam (7), the clockwise and anticlockwise motor
(13) output shaft runs through the crossbeam (7) and extends on the inside of the sliding slot (6) and connect with the ball screw (11) one end, and two
The table mechanism (14) being flexibly connected, the both ends pair of the table mechanism (14) are equipped between a first column (5)
Claim to be equipped with the sliding block (15) to match with the sliding slot (6), be offered and the ball screw (11) at the top of the sliding block (15)
The first through hole (16) to match, the feed screw nut (12) are fixedly connected with the sliding block (15), second column (17)
Outer wall is equipped with rack gear (18) close to the table mechanism (14) side, and table mechanism (14) outer wall is close to described second
Column (17) side is equipped with the first gear (19) being meshed with the rack gear (18), table mechanism (14) inside center
Equipped with the first installation cavity (20), the first installation cavity (20) matching internal is equipped with cutterhead mounting rack (21), the workbench machine
Several connecting rods (22) are equipped at the top of structure (14) above the cutterhead mounting rack (21), several connecting rods (22) are connected with
The same holding ring (23), cutterhead mounting rack (21) bottom are equipped with several lifting knives (24), the table mechanism
(14) top is equipped with the second through-hole (25) below the holding ring (23), and cutterhead mounting rack (21) top center is equipped with the
Three through-holes (26), the table mechanism (14) is internal to be equipped with the second installation cavity (27) on the outside of first installation cavity (20),
Second installation cavity (27) matching internal is equipped with the clamping device (28) being flexibly connected, at the top of the table mechanism (14) in
Several the first servo electric cylinders (29) on the outside of the cutterhead mounting rack (21), the first servo electric cylinders (29) run through the work
Platform mechanism (14) is extended at the top of the second installation cavity (27) inside and the clamping device (28) and is connect, the workbench machine
Servo motor (30) are equipped at the top of structure (14), servo motor (30) output shaft is extended to through the table mechanism (14)
First installation cavity (20) side is equipped with second gear (31), and cutterhead mounting rack (21) outer wall is arranged with and described second
The third gear (32) that gear (31) is meshed, the clamping device (28) include annular disk (33), in the annular disk (33)
Wall is equipped with opening, and annular disk (33) inside outer wall is equipped with several the second servo electric cylinders (34), the second servo electric cylinders
(34) one end is connected with arc grip block (35), the clockwise and anticlockwise motor (13), the first servo electric cylinders (29), the servo
Motor (30) and the second servo electric cylinders (34) connect with the control box (8) respectively.
2. a kind of automatic plant lifter of forestry sapling according to claim 1, it is characterised in that: the arrestment mechanism (4) is liquid
Pressure type arrestment mechanism has elastic component on the fluid pressure type arrestment mechanism.
3. a kind of automatic plant lifter of forestry sapling according to claim 1, it is characterised in that: the second column (17) outer wall
Arm-rest frame is equipped with far from the rack gear (18) side.
4. a kind of automatic plant lifter of forestry sapling according to claim 1, it is characterised in that: table mechanism (14) top
Portion is equipped with the fixed frame to match with the first servo electric cylinders (29).
5. a kind of automatic plant lifter of forestry sapling according to claim 1, it is characterised in that: at the top of sliding slot (6) inner wall
Equipped with the first bearing seat to match with the ball screw (11), sliding slot (6) the inner wall bottom is equipped with and the ball wire
The second bearing seat that bar (11) matches.
6. a kind of automatic plant lifter of forestry sapling according to claim 1, it is characterised in that: at the top of the clamping device (28)
Equipped with the first connection frame to match with the first servo electric cylinders (29).
7. a kind of automatic plant lifter of forestry sapling according to claim 1, it is characterised in that: the arc grip block (35) is outside
Wall is equipped with the second connection frame to match with the second servo electric cylinders (34).
8. a kind of automatic plant lifter of forestry sapling according to claim 1, it is characterised in that: in institute at the top of the crossbeam (7)
It states matching on the outside of control box (8) and is equipped with the shield being flexibly connected, the shield is made of tempered glass materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910337970.3A CN110122254A (en) | 2019-04-25 | 2019-04-25 | A kind of automatic plant lifter of forestry sapling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910337970.3A CN110122254A (en) | 2019-04-25 | 2019-04-25 | A kind of automatic plant lifter of forestry sapling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110122254A true CN110122254A (en) | 2019-08-16 |
Family
ID=67571102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910337970.3A Withdrawn CN110122254A (en) | 2019-04-25 | 2019-04-25 | A kind of automatic plant lifter of forestry sapling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110122254A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115119708A (en) * | 2022-08-12 | 2022-09-30 | 陈志忠 | Seedling device is played with sapling in gardens construction |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958613A (en) * | 1974-09-09 | 1976-05-25 | L. B. Foster Company | Tree and stump extraction |
| CN205623574U (en) * | 2016-05-04 | 2016-10-12 | 浙江省林科院园林绿化工程有限公司 | Tree balling machine |
| CN106416927A (en) * | 2015-08-12 | 2017-02-22 | 国龙寿 | Hydraulically-powered rotary digging device for small-type tree mover capable of protecting roots and conserving soil |
| CN207869928U (en) * | 2017-12-22 | 2018-09-18 | 四川农业大学 | A kind of nursery stock digging device with protection effect |
| CN109287430A (en) * | 2018-10-27 | 2019-02-01 | 四川天恩生态农业旅游发展有限公司 | A kind of forestry wood seeding transplant machine |
-
2019
- 2019-04-25 CN CN201910337970.3A patent/CN110122254A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958613A (en) * | 1974-09-09 | 1976-05-25 | L. B. Foster Company | Tree and stump extraction |
| CN106416927A (en) * | 2015-08-12 | 2017-02-22 | 国龙寿 | Hydraulically-powered rotary digging device for small-type tree mover capable of protecting roots and conserving soil |
| CN205623574U (en) * | 2016-05-04 | 2016-10-12 | 浙江省林科院园林绿化工程有限公司 | Tree balling machine |
| CN207869928U (en) * | 2017-12-22 | 2018-09-18 | 四川农业大学 | A kind of nursery stock digging device with protection effect |
| CN109287430A (en) * | 2018-10-27 | 2019-02-01 | 四川天恩生态农业旅游发展有限公司 | A kind of forestry wood seeding transplant machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115119708A (en) * | 2022-08-12 | 2022-09-30 | 陈志忠 | Seedling device is played with sapling in gardens construction |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190816 |