CN107938476A - It is a kind of loosen the soil after the road construction trimming device tamped - Google Patents
It is a kind of loosen the soil after the road construction trimming device tamped Download PDFInfo
- Publication number
- CN107938476A CN107938476A CN201711411886.9A CN201711411886A CN107938476A CN 107938476 A CN107938476 A CN 107938476A CN 201711411886 A CN201711411886 A CN 201711411886A CN 107938476 A CN107938476 A CN 107938476A
- Authority
- CN
- China
- Prior art keywords
- fixed
- soil
- cavity
- loosen
- column
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
- E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
- Soil Working Implements (AREA)
Abstract
The invention discloses the road construction trimming device tamped after a kind of loosen the soil, including car body, first motor and rammer column, preceding crawler belt runner is equipped with the left of the car body lower end, rear crawler belt runner is equipped with the right side of car body lower end, threaded rod is fixed with the first motor lower end output shaft, nut is arranged with threaded rod, it is fixed on the right side of nut in fixed plate, fixed plate lower end is fixed with two rollers that loosen the soil arranged in parallel, the rammer column is arranged in the first cavity, first cavity upper end connects the second cavity by communicating pipe, second cavity inside is equipped with turntable, turntable is equipped with fixed column, fixed column is equipped with is fixed with bull stick by fixed sleeving, bull stick lower end is hinged on telescopic advance lever.The road construction trimming device that the present invention tamps after loosening the soil, is applicable in containing the harder ground of large clod or ground soil property, easy to be tamped to the ground of different porousnesses, and applied to narrow road surface and the short narrow courtyard of door setting.
Description
Technical field
It is specifically the road construction finishing dress tamped after a kind of loosen the soil the present invention relates to a kind of road construction trimming device
Put.
Background technology
Ram as Chinese terms, originally mean reinforcing, extended sense is basic to beat jail, is chiefly used in building trade.Made using weight
Free falling to ground or is filled earth and stone material and is rammed repeatedly for it, to improve the construction operation of its compactness.Compacting, is rammed, or
Ramming, was that ground is tamped in a manner of manpower with the hard thing such as stone when building house originally, work is completed in usual 2 people above cooperation
Make.The work of present compacting foundation also referred to as makes electrorammer to be changed to mechanical compacting.
, it is necessary to first carry out smooth, compacting operation to dirt road, during repairing the roads, often before asphalt or concrete
There is road foundation to make not comprehensively, the situation that ground is not smooth enough, firm, road foundation quality is not protected preferably
Card so that the road surface of asphalt or concrete, height rise and fall, drenching with rain, under weight, easily form crackle or pit.
When setting short narrow courtyard to tamp on narrow road surface and door, large-scale ballast consolidating machine does not apply at present, in the market
When small rammer containing the harder ground of large clod or ground soil property to tamping, compacting effect is bad, is not easy to difference
The ground of porousness is controlled compacting.
The content of the invention
It is an object of the invention to provide the road construction trimming device tamped after a kind of loosen the soil, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the present invention provides following technical solution:
It is a kind of loosen the soil after the road construction trimming device tamped, including car body, the first motor and ram column, it is fixed on the right side of the car body
There is handle, preceding crawler belt runner is equipped with the left of car body lower end, is equipped with rear crawler belt runner on the right side of car body lower end, first motor passes through
Supporting rack is fixed on car body upper end, is fixed with threaded rod on the first motor lower end output shaft, nut, nut are arranged with threaded rod
Right side is fixed in fixed plate, and fixed plate is arranged in the 3rd cavity that car body lower end is equipped with, and fixed plate lower end is fixed with two
The roller that loosens the soil arranged in parallel, roller upper end of loosening the soil are connected with the second motor by belt, and the second motor is arranged in fixed plate, fixed
It is fixed on the right side of plate by casing on limited post, the rammer column is arranged in the first cavity, and the first cavity is arranged on vehicle body,
It is equipped with outside first cavity and covers door, by connecting the second cavity communicating pipe, the second cavity inside, which is equipped with, is turned for the first cavity upper end
Disk, turntable are fixed on by shaft in the output of the 3rd motor, and the 3rd motor is fixed on the inside of the second cavity top, are set on turntable
There is fixed column, fixed column is equipped with is fixed with bull stick by fixed sleeving, and bull stick lower end is hinged on telescopic advance lever, above stretches
Contracting adjusting rod lower end is interspersed in lower telescopic rod, and lower telescopic rod is internally provided with column type containing cavities, and upper telescopic rod and lower telescopic rod lead to
Cross fixed pin to fix, coordinate fixed pin to be equipped with the limit hole of array distribution on upper telescopic rod, lower telescopic rod lower end is fixed on rammer column
On.
As the further scheme of the present invention:The car body is arranged to tetragonous bench-type.
As further scheme of the invention:Crawler belt runner is arranged to power runner after described.
As further scheme of the invention:The threaded rod bottom is equipped with the smooth active column in one end, under Rotational Cylindrical
End is equipped with anti-falling limit disk.
As further scheme of the invention:The roller that loosens the soil is equipped with the knife of digging of array distribution.
As further scheme of the invention:First cavity and the 3rd cavity lower end are both provided with notch.
As further scheme of the invention:The fixed column is arranged on the edge of turntable.
Compared with prior art, the beneficial effects of the invention are as follows:
The road construction trimming device that the present invention tamps after loosening the soil, in use, starting the first motor, the first motor drives screw thread
Fixed plate is transferred to ground together with the roller that loosens the soil and loosened the soil by bar, threaded rod and screwed pipe screw-driven, easy to will contain large clod or
It is that soil property harder ground in ground is loosened the soil, is conducive to the smooth of later stage, starts the 3rd motor and drive turntable to rotate, turntable is by turning
Bar pulls back and forth up and down rams column compacting ground, and lower telescopic advance lever can be interspersed in by upper telescopic advance lever by ramming the falling head of column
Internal length is adjusted, and easy to be tamped to the ground of different porousnesses, while crawler belt turns before the setting of device lower end
Wheel and rear crawler belt runner are different from tire easy to ground grading to extrude groove by ground, and device volume is small, easy to applied to narrow
Narrow lane face and door set short narrow courtyard.
Brief description of the drawings
Fig. 1 is a kind of structure diagram for the road construction trimming device tamped after loosen the soil.
Fig. 2 is a kind of internal structure schematic diagram for the road construction trimming device tamped after loosen the soil.
Wherein:Car body 1, supporting rack 2, the first motor 3, preceding crawler belt runner 4, ram column 5, cover door 6, rear crawler belt runner 7, push away
8, threaded rod 31, nut 32, the roller 33 that loosens the soil, fixed plate 34, limited post 35, the first cavity 51, lower adjustable telescopic rod 52, fixation
Pin 53, upper telescopic advance lever 54, turntable 55, fixed column 56, bull stick 57, turntable 58, the second cavity 59.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Please refer to Fig.1 and Fig. 2, in the embodiment of the present invention, it is a kind of loosen the soil after the road construction trimming device tamped, including car
Body 1, the first motor 3 and rammer column 5, the car body 1 are arranged to tetragonous bench-type, and the right side of car body 1 is fixed with handle 8, and 1 lower end of car body is left
Side is equipped with preceding crawler belt runner 4, is equipped with rear crawler belt runner 7 on the right side of 1 lower end of car body, rear crawler belt runner 7 is arranged to power runner, described
First motor 3 is fixed on 1 upper end of car body by supporting rack 2, and threaded rod 31, screw thread are fixed with 3 lower end output shaft of the first motor
31 bottom of bar is equipped with the smooth active column in one end, and Rotational Cylindrical lower end is equipped with anti-falling limit disk, nut is arranged with threaded rod 31
32, the right side of nut 32 is fixed in fixed plate 34, and fixed plate 34 is arranged in the 3rd cavity that 1 lower end of car body is equipped with, fixed plate
34 lower ends are fixed with two rollers 33 that loosen the soil arranged in parallel, and the roller 33 that loosens the soil is equipped with the knife of digging of array distribution, loosens the soil on roller 33
End is connected with the second motor by belt, and the second motor is arranged in fixed plate 34, and the right side of fixed plate 34 is fixed on by casing
On limited post 35, the rammer column 5 is arranged in the first cavity 51, and the first cavity 51 is arranged on inside car body 1,51 He of the first cavity
3rd cavity lower end is both provided with notch, and the outside of the first cavity 51, which is equipped with, covers door 6, and 51 upper end of the first cavity is connected by communicating pipe
Logical second cavity 59, the second cavity 59 are internally provided with turntable 58, and turntable 58 is fixed on by shaft in the output of the 3rd motor, the
Three motors are fixed on 59 inside top of the second cavity, and turntable 58 is equipped with fixed column 56, and fixed column 56 is arranged on the side of turntable 58
At edge, fixed column 56 is equipped with is fixed with bull stick 57 by fixed sleeving, and 57 lower end of bull stick is hinged on telescopic advance lever 54,
Upper 54 lower end of telescopic advance lever is interspersed in lower telescopic rod 52, and lower telescopic rod 52 is internally provided with column type containing cavities, upper telescopic rod 54
Fixed with lower telescopic rod 52 by fixed pin 53, coordinate fixed pin 53 to be equipped with the limit hole of array distribution on upper telescopic rod 54, under
52 lower end of telescopic rod, which is fixed on, to be rammed on column, in use, starting the first motor 3, the first motor 3 drives threaded rod 31, threaded rod 31
Fixed plate 34 is transferred to ground together with the roller 33 that loosens the soil with 32 screw-driven of screwed pipe to loosen the soil, easy to which large clod or ground will be contained
Soil property harder ground in face is loosened the soil, and is conducive to the smooth of later stage, is started the 3rd motor and is driven turntable 58 to rotate, turntable 58 is by turning
Bar pulls back and forth about 57 rams the compacting of column 5 ground, and lower stretch can be interspersed in by upper telescopic advance lever 54 by ramming the falling head of column 5
Length inside adjusting rod 52 is adjusted, and easy to be tamped to the ground of different porousnesses, while device lower end is set
Preceding crawler belt runner 4 and rear crawler belt runner 7 are different from tire easy to ground grading to extrude groove by ground, and device volume is small, just
In applied to narrow road surface and the short narrow courtyard of door setting.
The present invention operation principle be:The road construction trimming device that the present invention tamps after loosening the soil, in use, starting first
Motor, the first motor drive threaded rod, threaded rod and screwed pipe screw-driven that fixed plate is transferred to ground pine together with the roller that loosens the soil
Soil, easy to loosen the soil containing the harder ground of large clod or ground soil property, is conducive to the smooth of later stage, starts the 3rd motor band
Turn disk rotates, and turntable is pulled and rams column compacting ground back and forth up and down by bull stick, and the falling head for ramming column can be by upper flexible tune
The length that pole is interspersed in inside lower telescopic advance lever is adjusted, easy to be tamped to the ground of different porousnesses, together
When device lower end set preceding crawler belt runner and rear crawler belt runner to be different from tire easy to ground grading and ground can be extruded groove, dress
Put it is small, easy to set short narrow courtyard applied to narrow road surface and door.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical solution, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (7)
1. it is a kind of loosen the soil after the road construction trimming device tamped, including car body(1), the first motor(3)With rammer column(5), it is special
Sign is, the car body(1)Right side is fixed with handle(8), car body(1)Preceding crawler belt runner is equipped with the left of lower end(4), car body(1)
Rear crawler belt runner is equipped with the right side of lower end(7), first motor(3)Pass through supporting rack(2)It is fixed on car body(1)Upper end, first
Motor(3)Threaded rod is fixed with the output shaft of lower end(31), threaded rod(31)On be arranged with nut(32), nut(32)Right side is consolidated
It is scheduled on fixed plate(34)On, fixed plate(34)It is arranged on car body(1)In the 3rd cavity that lower end is equipped with, fixed plate(34)Lower end is consolidated
Surely there are two rollers that loosen the soil arranged in parallel(33), loosen the soil roller(33)Upper end is connected with the second motor by belt, and the second motor is set
Put in fixed plate(34)On, fixed plate(34)Right side is fixed on limited post by casing(35)On, the rammer column(5)It is arranged on
One cavity(51)It is interior, the first cavity(51)It is arranged on car body(1)Inside, the first cavity(51)Outside is equipped with and covers door(6), first
Cavity(51)Upper end connects the second cavity by communicating pipe(59), the second cavity(59)It is internally provided with turntable(58), turntable(58)
It is fixed on by shaft in the output of the 3rd motor, the 3rd motor is fixed on the second cavity(59)Inside top, turntable(58)On
Equipped with fixed column(56), fixed column(56)It is equipped with and bull stick is fixed with by fixed sleeving(57), bull stick(57)Lower end is hinged on
Upper telescopic advance lever(54)On, upper telescopic advance lever(54)Lower end is interspersed in lower telescopic rod(52)It is interior, lower telescopic rod(52)It is internal
Equipped with column type containing cavities, upper telescopic rod(54)With lower telescopic rod(52)Pass through fixed pin(53)It is fixed, upper telescopic rod(54)On match somebody with somebody
Close fixed pin(53)Limit hole equipped with array distribution, lower telescopic rod(52)Lower end, which is fixed on, to be rammed on column.
2. it is according to claim 1 it is a kind of loosen the soil after the road construction trimming device tamped, it is characterised in that the car body
(1)It is arranged to tetragonous bench-type.
3. it is according to claim 1 it is a kind of loosen the soil after the road construction trimming device tamped, it is characterised in that carried out after described
Band runner(7)It is arranged to power runner.
4. it is according to claim 1 it is a kind of loosen the soil after the road construction trimming device tamped, it is characterised in that the screw thread
Bar(31)Bottom is equipped with the smooth active column in one end, and Rotational Cylindrical lower end is equipped with anti-falling limit disk.
5. it is according to claim 1 it is a kind of loosen the soil after the road construction trimming device tamped, it is characterised in that it is described to loosen the soil
Roller(33)It is equipped with the knife of digging of array distribution.
6. it is according to claim 1 it is a kind of loosen the soil after the road construction trimming device tamped, it is characterised in that described first
Cavity(51)Notch is both provided with the 3rd cavity lower end.
7. it is according to claim 1 it is a kind of loosen the soil after the road construction trimming device tamped, it is characterised in that the fixation
Column(56)It is arranged on turntable(58)Edge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711411886.9A CN107938476B (en) | 2017-12-23 | 2017-12-23 | Road construction trimming device tamped after loosening soil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711411886.9A CN107938476B (en) | 2017-12-23 | 2017-12-23 | Road construction trimming device tamped after loosening soil |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107938476A true CN107938476A (en) | 2018-04-20 |
CN107938476B CN107938476B (en) | 2020-01-10 |
Family
ID=61938732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711411886.9A Active CN107938476B (en) | 2017-12-23 | 2017-12-23 | Road construction trimming device tamped after loosening soil |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107938476B (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108643016A (en) * | 2018-07-26 | 2018-10-12 | 四川创新亿建筑工程有限公司 | Blanking smooths rammer compacter |
CN108867304A (en) * | 2018-09-20 | 2018-11-23 | 刘斌 | Town road asphalt paving maintenance device |
CN110528363A (en) * | 2019-09-17 | 2019-12-03 | 平顶山市公路交通勘察设计院 | A kind of highway road edge ground compaction apparatus |
CN110578284A (en) * | 2018-06-07 | 2019-12-17 | 重庆工程职业技术学院 | Rearmounted hammering device of road bridge construction asphalt paving machine |
CN110725186A (en) * | 2019-11-21 | 2020-01-24 | 中海外交通建设有限公司 | Road construction trimming device tamped after loosening soil |
CN114182605A (en) * | 2022-01-04 | 2022-03-15 | 屠文水 | Road repairing and tamping vehicle |
CN114657968A (en) * | 2022-04-08 | 2022-06-24 | 北京城乡建设集团有限责任公司 | Portable flatting mill |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201695307U (en) * | 2010-06-12 | 2011-01-05 | 无锡尚高工程机械有限公司 | Hydraulic two-way vibratory plate compactor |
CN106567311A (en) * | 2016-11-08 | 2017-04-19 | 苏州曾智沃德智能科技有限公司 | Intelligent robot for ground ramming |
CN206396567U (en) * | 2017-01-04 | 2017-08-11 | 白素峰 | Trimming device is tamped in road construction |
CN107059561A (en) * | 2017-04-28 | 2017-08-18 | 湖州中辰建设有限公司 | A kind of civil engineering ramming machine |
CN208533336U (en) * | 2017-12-23 | 2019-02-22 | 安徽华初工程项目管理有限公司 | It is a kind of loosen the soil after the road construction trimming device tamped |
-
2017
- 2017-12-23 CN CN201711411886.9A patent/CN107938476B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201695307U (en) * | 2010-06-12 | 2011-01-05 | 无锡尚高工程机械有限公司 | Hydraulic two-way vibratory plate compactor |
CN106567311A (en) * | 2016-11-08 | 2017-04-19 | 苏州曾智沃德智能科技有限公司 | Intelligent robot for ground ramming |
CN206396567U (en) * | 2017-01-04 | 2017-08-11 | 白素峰 | Trimming device is tamped in road construction |
CN107059561A (en) * | 2017-04-28 | 2017-08-18 | 湖州中辰建设有限公司 | A kind of civil engineering ramming machine |
CN208533336U (en) * | 2017-12-23 | 2019-02-22 | 安徽华初工程项目管理有限公司 | It is a kind of loosen the soil after the road construction trimming device tamped |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110578284A (en) * | 2018-06-07 | 2019-12-17 | 重庆工程职业技术学院 | Rearmounted hammering device of road bridge construction asphalt paving machine |
CN108643016A (en) * | 2018-07-26 | 2018-10-12 | 四川创新亿建筑工程有限公司 | Blanking smooths rammer compacter |
CN108867304A (en) * | 2018-09-20 | 2018-11-23 | 刘斌 | Town road asphalt paving maintenance device |
CN110528363A (en) * | 2019-09-17 | 2019-12-03 | 平顶山市公路交通勘察设计院 | A kind of highway road edge ground compaction apparatus |
CN110725186A (en) * | 2019-11-21 | 2020-01-24 | 中海外交通建设有限公司 | Road construction trimming device tamped after loosening soil |
CN114182605A (en) * | 2022-01-04 | 2022-03-15 | 屠文水 | Road repairing and tamping vehicle |
CN114657968A (en) * | 2022-04-08 | 2022-06-24 | 北京城乡建设集团有限责任公司 | Portable flatting mill |
CN114657968B (en) * | 2022-04-08 | 2023-06-09 | 北京城乡建设集团有限责任公司 | Portable flatting mill |
Also Published As
Publication number | Publication date |
---|---|
CN107938476B (en) | 2020-01-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107938476A (en) | It is a kind of loosen the soil after the road construction trimming device tamped | |
CN206591790U (en) | A kind of concrete paving and leveling all-in-one | |
CN107842313B (en) | A kind of rotary drilling rig compact making hole construction technology | |
CN104179105B (en) | A kind of contrary sequence method rigid pile composite foundation construction method | |
CN110983915A (en) | Road roller for roadbed construction and construction method thereof | |
CN110965415A (en) | Method for widening and transforming old concrete pavement | |
CN208533336U (en) | It is a kind of loosen the soil after the road construction trimming device tamped | |
CN113186773B (en) | Road construction method based on building energy conservation | |
CN113737769A (en) | Foundation tamping device for constructional engineering | |
CN209338971U (en) | It is a kind of with the municipal administration ground repair apparatus for evening structure out | |
CN211948413U (en) | Soft soil foundation consolidates compaction stake construction equipment | |
CN108149547A (en) | A kind of road construction trimming device with multistage rammer column | |
CN110331629A (en) | A kind of highway anti-settling construction method | |
CN208618229U (en) | A kind of road construction trimming device with multistage rammer column | |
CN213233399U (en) | Foundation leveling equipment for constructional engineering | |
CN210263007U (en) | Portable foundation paving device | |
CN212690022U (en) | Sampling drill bit for quality inspection of constructional engineering | |
CN207775861U (en) | A kind of device of foundation | |
CN207193940U (en) | A kind of small-sized ramming machine | |
CN207392201U (en) | A kind of packaged type slip casting platform | |
CN216551884U (en) | Highway subgrade gravel pile highway surface compaction device | |
CN115262308B (en) | Carbonaceous mudstone low-permeability surrounding rock roadbed and grouting equipment | |
CN219182006U (en) | Flat floor structure | |
CN213014239U (en) | Ground tamping device for highway bridge construction | |
JP4061232B2 (en) | Vibrating roller |
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 | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20191217 Address after: 224300 Fuling East Road, Yangma Town, Sheyang County, Yancheng City, Jiangsu Province Applicant after: Yancheng strength fiber technology Co., Ltd Address before: 518000 Xinhua Insurance Building, Futian Street, Futian District, Shenzhen City, Guangdong Province 1409 Applicant before: Shenzhen Sheng Xiang Intellectual Property Ltd |
|
TA01 | Transfer of patent application right | ||
GR01 | Patent grant | ||
GR01 | Patent grant |