CN112356303A - Brick making raw material recognizing and proportioning device - Google Patents
Brick making raw material recognizing and proportioning device Download PDFInfo
- Publication number
- CN112356303A CN112356303A CN202011141080.4A CN202011141080A CN112356303A CN 112356303 A CN112356303 A CN 112356303A CN 202011141080 A CN202011141080 A CN 202011141080A CN 112356303 A CN112356303 A CN 112356303A
- Authority
- CN
- China
- Prior art keywords
- raw material
- fixedly connected
- computer
- base
- wall
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0404—Proportioning
- B28C7/0409—Proportioning taking regard of the moisture content of the solid ingredients; Moisture indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0404—Proportioning
- B28C7/0418—Proportioning control systems therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0422—Weighing predetermined amounts of ingredients, e.g. for consecutive delivery
- B28C7/044—Weighing mechanisms specially adapted therefor; Weighing containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Automation & Control Theory (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a brick making raw material identification proportioning device which comprises a base, wherein foot pads are fixedly connected at four corners of the bottom wall of the base, supporting rods are fixedly connected at four corners of the top wall of the base, the top walls of the four supporting rods are fixedly connected with the same fixing plate, a computer is fixedly arranged on the bottom wall of one side of the fixing plate, an installation groove is formed in one side, close to the computer, of the top wall of the base, belt wheels are symmetrically arranged on two sides in the installation groove, and the two belt wheels are connected through a crawler belt sleeved on the. The invention is provided with the raw material active conveying and detecting mechanism, does not need manual conveying in actual raw material conveying work, can carry out rapid raw material conveying and conveying work, is also provided with the intelligent raw material identifying and detecting mechanism, namely the raw material identifying mechanism and the raw material moisture detecting mechanism, is also provided with a computer for data analysis and processing work, and can carry out intelligent and efficient brick making raw material identifying and proportioning work.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a brick making raw material identification proportioning device.
Background
Construction materials are various materials used in construction works. The building materials are various in types, and are roughly divided into: inorganic materials, including metallic and non-metallic materials. Organic materials, including plant materials, synthetic polymer materials and bituminous materials.
At present, building material uses extensively, and including the pure clay brick of environmental protection, it needs carry out the ratio work at the preparation process, and current brickmaking raw materials discernment ratio device lacks raw materials initiative conveying detection mechanism, and actual raw materials carries work and needs the manpower transport, lacks intelligent raw materials discernment in addition and detection mechanism, is difficult to carry out the brickmaking raw materials discernment ratio work of intelligent efficient.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a brick making raw material identification and proportioning device.
In order to achieve the purpose, the invention adopts the following technical scheme: a raw material identification and proportioning device for brick making comprises a base, wherein foot pads are fixedly connected at four corners of the bottom wall of the base;
the four corners of the top wall of the base are fixedly connected with supporting rods, the top walls of the four supporting rods are fixedly connected with the same fixed plate, and a computer is fixedly arranged on the bottom wall of one side of the fixed plate;
the top wall of the base is provided with a mounting groove at one side close to the computer, belt wheels are symmetrically arranged at two sides in the mounting groove, and the two belt wheels are connected through a crawler belt sleeved at the outer side of the belt wheels;
a weighing machine is fixedly arranged on one side of the top wall of the base, which is far away from the mounting groove;
an air cylinder is fixedly arranged at the position, between the computer and the weighing machine, of the bottom wall of the fixed plate, and a soil humidity detector is arranged right below the air cylinder;
the cylinder one side is kept away from to the computer diapire is symmetry fixedly connected with mounting bracket around, two be provided with the camera between the mounting bracket.
As a further description of the above technical solution:
the same two at front side or rear side the bracing piece top is the lateral wall fixedly connected with reinforcement piece in opposite directions, reinforcement piece roof fixedly connected with fixed plate diapire.
As a further description of the above technical solution:
a groove is formed between the middle positions of the front side wall and the rear side wall below the mounting frame, rotating shafts are rotatably connected in the groove, and the side wall of one opposite side of each rotating shaft is fixedly connected with a camera corresponding to the outer side wall of one side.
As a further description of the above technical solution:
the camera is connected with a computer through a first data line, and the soil moisture detector is connected with the computer through a second data line.
As a further description of the above technical solution:
and the center position of the rear side wall of the two belt wheels is fixedly connected with a motor output shaft arranged on the rear side wall of the mounting groove.
As a further description of the above technical solution:
the output end of the central position below the air cylinder is fixedly connected with a movable shaft, the bottom wall of the movable shaft is fixedly connected with a mounting plate, and the soil moisture detector is fixedly mounted at the central position of the bottom wall of the mounting plate.
The invention has the following beneficial effects:
1. compared with the prior art, brickmaking raw materials discernment proportioning device is provided with raw materials initiative conveying detection mechanism, and the work of carrying does not need the manpower transport in actual raw materials transport, can carry out quick raw materials transport and carry work.
2. Compared with the prior art, the brick making raw material identification proportioning device is provided with an intelligent raw material identification and detection mechanism, namely the raw material identification mechanism and the raw material moisture detection mechanism, and is provided with a computer for data analysis and processing, so that the intelligent and efficient brick making raw material identification proportioning work can be carried out.
Drawings
FIG. 1 is a schematic structural diagram of a brick making raw material identification and proportioning device provided by the invention;
FIG. 2 is an enlarged view of the part A in FIG. 1 of a raw material recognition and proportioning device for brick making according to the present invention;
fig. 3 is an enlarged view of a raw material identification and proportioning device for brick making in fig. 1 at B.
Illustration of the drawings:
1. a base; 2. a foot pad; 3. a support bar; 4. a fixing plate; 5. a computer; 6. mounting grooves; 7. a pulley; 8. a crawler belt; 9. a weighing machine; 10. a cylinder; 11. a soil moisture detector; 12. a mounting frame; 13. a camera; 14. a reinforcing block; 15. a rotating shaft; 16. a first data line; 17. a movable shaft; 18. mounting a plate; 19. and a second data line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, one embodiment of the present invention is provided: a raw material identification proportioning device for brick making comprises a base 1, wherein foot pads 2 are fixedly connected at four corners of the bottom wall of the base 1, and play a role in supporting a device body;
the four corners of the top wall of the base 1 are fixedly connected with supporting rods 3, the top walls of the four supporting rods 3 are fixedly connected with the same fixed plate 4, and the bottom wall of one side of the fixed plate 4 is fixedly provided with a computer 5 which can perform data processing and analysis work;
the top wall of the base 1 is provided with a mounting groove 6 at one side close to the computer 5, belt wheels 7 are symmetrically arranged at two sides in the mounting groove 6, the two belt wheels 7 are connected through a crawler 8 sleeved on the outer side of the two belt wheels, and the two belt wheels 7 rotate to drive the crawler 8 sleeved on the outer side of the two belt wheels to move so as to convey the brick making raw materials with the ratio to be identified;
a weighing machine 9 is fixedly arranged on one side of the top wall of the base 1, which is far away from the mounting groove 6, and the identified brick making raw materials can be placed on the weighing machine 9 to be weighed by a proper amount;
a cylinder 10 is fixedly arranged on the bottom wall of the fixed plate 4 between the computer 5 and the weighing machine 9, and a soil humidity detector 11 is arranged under the cylinder 10 and can detect moisture;
the bottom wall of the computer 5 is far away from one side of the air cylinder 10 and is fixedly connected with mounting frames 12 in a front-back symmetrical mode, a camera 13 is arranged between the two mounting frames 12, and image data of brick making raw materials of the mixture ratio to be identified can be collected.
The side wall of the opposite side above the two support rods 3 on the front side or the rear side is fixedly connected with a reinforcing block 14, the top wall of the reinforcing block 14 is fixedly connected with the bottom wall of a fixed plate 4, the reinforcing effect of the structure of the device body is achieved, a groove is formed between the middle positions of the front side wall and the rear side wall below the mounting rack 12, a rotating shaft 15 is rotationally connected in the groove, the side wall of the opposite side of the two rotating shafts 15 is fixedly connected with a camera 13 corresponding to one side of the outer side wall, the camera 13 can be rotated to a proper angle, the camera 13 is connected with a computer 5 through a first data line 16, a soil moisture detector 11 is connected with the computer 5 through a second data line 19, the central position of the rear side wall of the two belt wheels 7 is fixedly connected with a motor output shaft arranged on the rear side wall of the mounting groove 6, soil moisture detector 11 fixed mounting is in the 18 diapire central point of mounting panel and puts, and accessible cylinder 10 drive loose axle 17 drives mounting panel 18 and descends, and then drives the soil moisture detector 11 of 18 diapire fixed mounting of mounting panel and insert in the brickmaking raw materials of the ratio of waiting to discern.
The working principle is as follows: when in use, the brick making raw materials to be identified and proportioned are placed above the outer side wall of one side of the crawler 8 far away from the weighing machine 9, the motor in the base 1 is opened to drive the two belt wheels 7 to rotate, so as to drive the crawler 8 sleeved outside the crawler 8 to move, the brick making raw materials to be identified and proportioned on the crawler 8 are conveyed, when the brick making raw materials are conveyed to the position under the soil moisture detector 11, the conveying is stopped, the movable shaft 17 is driven by the air cylinder 10 to drive the mounting plate 18 to descend, so as to drive the soil moisture detector 11 fixedly mounted on the bottom wall of the mounting plate 18 to be inserted into the brick making raw materials to be identified and proportioned to carry out moisture detection work, moisture detection data are transmitted to the computer 5 through the second data line 19, the camera 13 is rotated to a proper angle, the image data of the brick making raw materials to be identified and proportioned are collected and transmitted to the computer 5 through the first data line 16, and the computer 5, obtaining the types and the water contents of the brick making raw materials to be identified and matched, calculating according to the matching requirement to obtain the required amount, recovering the soil humidity detector 11, placing the identified brick making raw materials on the weighing machine 9, and weighing the appropriate amount to complete the identification and matching work of the brick making raw materials.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a system brick raw materials discernment proportioning device, includes base (1), its characterized in that: foot pads (2) are fixedly connected to four corners of the bottom wall of the base (1);
supporting rods (3) are fixedly connected to four corners of the top wall of the base (1), the top walls of the four supporting rods (3) are fixedly connected with the same fixing plate (4), and a computer (5) is fixedly mounted on the bottom wall of one side of the fixing plate (4);
an installation groove (6) is formed in one side, close to the computer (5), of the top wall of the base (1), belt wheels (7) are symmetrically arranged on two sides in the installation groove (6), and the two belt wheels (7) are connected through a crawler belt (8) sleeved on the outer side of the two belt wheels;
a weighing machine (9) is fixedly arranged on one side of the top wall of the base (1) far away from the mounting groove (6);
a cylinder (10) is fixedly arranged on the bottom wall of the fixing plate (4) between the computer (5) and the weighing machine (9), and a soil humidity detector (11) is arranged right below the cylinder (10);
the air cylinder (10) one side is kept away from to computer (5) diapire and symmetry fixedly connected with mounting bracket (12) around, two be provided with camera (13) between mounting bracket (12).
2. The raw material identification and proportioning device for making bricks according to claim 1, wherein: and the side wall of one side opposite to the upper part of the supporting rod (3) is fixedly connected with a reinforcing block (14) at the front side or the rear side, and the top wall of the reinforcing block (14) is fixedly connected with the bottom wall of the fixing plate (4).
3. The raw material identification and proportioning device for making bricks according to claim 1, wherein: a groove is formed between the middle positions of the front side wall and the rear side wall below the mounting rack (12), a rotating shaft (15) is connected in the groove in a rotating mode, and two opposite side walls of the rotating shaft (15) are fixedly connected with a camera (13) and correspond to the outer side wall of one side.
4. The raw material identification and proportioning device for making bricks according to claim 1, wherein: the camera (13) is connected with a computer (5) through a first data line (16), and the soil moisture detector (11) is connected with the computer (5) through a second data line (19).
5. The raw material identification and proportioning device for making bricks according to claim 1, wherein: and the center of the rear side wall of the two belt wheels (7) is fixedly connected with a motor output shaft arranged on the rear side wall of the mounting groove (6).
6. The raw material identification and proportioning device for making bricks according to claim 1, wherein: the output end of the central position below the air cylinder (10) is fixedly connected with a movable shaft (17), the bottom wall of the movable shaft (17) is fixedly connected with a mounting plate (18), and the soil moisture detector (11) is fixedly mounted at the central position of the bottom wall of the mounting plate (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011141080.4A CN112356303A (en) | 2020-10-22 | 2020-10-22 | Brick making raw material recognizing and proportioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011141080.4A CN112356303A (en) | 2020-10-22 | 2020-10-22 | Brick making raw material recognizing and proportioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112356303A true CN112356303A (en) | 2021-02-12 |
Family
ID=74511652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011141080.4A Pending CN112356303A (en) | 2020-10-22 | 2020-10-22 | Brick making raw material recognizing and proportioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112356303A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751552A (en) * | 2008-12-05 | 2010-06-23 | 中国科学院沈阳自动化研究所 | Automatic identification method of ironmaking raw materials based on computer vision |
| CN202607837U (en) * | 2012-05-28 | 2012-12-19 | 李光尚 | Novel water adding device for online moisture detection for raw materials for making tiles and bricks |
| KR101715233B1 (en) * | 2016-09-22 | 2017-03-10 | 덴버코리아이엔씨 주식회사 | Precision measuring supply apparatus, Quality control measuring plant apparatus for mixing of mortar and Mixing method of mortar using the same |
| CN106976235A (en) * | 2017-05-02 | 2017-07-25 | 安徽玉辉电子科技有限公司 | A kind of 3D printer system |
| CN207140090U (en) * | 2017-09-13 | 2018-03-27 | 重庆市永川区红石建材有限公司 | Brick-making raw material feeds proportioner |
| CN110341047A (en) * | 2019-07-10 | 2019-10-18 | 广州市建筑集团混凝土有限公司 | Automatic batching system |
| CN209542474U (en) * | 2018-10-22 | 2019-10-25 | 上海易清智觉自动化科技有限公司 | Conveyer belt multi-material category identification device |
| CN209765317U (en) * | 2019-06-28 | 2019-12-10 | 合肥吴山新型建材有限公司 | Water content detection control device for municipal sludge perforated bricks |
| CN210089831U (en) * | 2019-04-18 | 2020-02-18 | 西北师范大学 | Intelligent weighing system |
| CN111168840A (en) * | 2020-01-14 | 2020-05-19 | 摩泰克梅蒂斯(中国)科技有限公司 | Mortar production control method and system |
-
2020
- 2020-10-22 CN CN202011141080.4A patent/CN112356303A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751552A (en) * | 2008-12-05 | 2010-06-23 | 中国科学院沈阳自动化研究所 | Automatic identification method of ironmaking raw materials based on computer vision |
| CN202607837U (en) * | 2012-05-28 | 2012-12-19 | 李光尚 | Novel water adding device for online moisture detection for raw materials for making tiles and bricks |
| KR101715233B1 (en) * | 2016-09-22 | 2017-03-10 | 덴버코리아이엔씨 주식회사 | Precision measuring supply apparatus, Quality control measuring plant apparatus for mixing of mortar and Mixing method of mortar using the same |
| CN106976235A (en) * | 2017-05-02 | 2017-07-25 | 安徽玉辉电子科技有限公司 | A kind of 3D printer system |
| CN207140090U (en) * | 2017-09-13 | 2018-03-27 | 重庆市永川区红石建材有限公司 | Brick-making raw material feeds proportioner |
| CN209542474U (en) * | 2018-10-22 | 2019-10-25 | 上海易清智觉自动化科技有限公司 | Conveyer belt multi-material category identification device |
| CN210089831U (en) * | 2019-04-18 | 2020-02-18 | 西北师范大学 | Intelligent weighing system |
| CN209765317U (en) * | 2019-06-28 | 2019-12-10 | 合肥吴山新型建材有限公司 | Water content detection control device for municipal sludge perforated bricks |
| CN110341047A (en) * | 2019-07-10 | 2019-10-18 | 广州市建筑集团混凝土有限公司 | Automatic batching system |
| CN111168840A (en) * | 2020-01-14 | 2020-05-19 | 摩泰克梅蒂斯(中国)科技有限公司 | Mortar production control method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213090728U (en) | Detection apparatus for plastic products thickness | |
| CN112356303A (en) | Brick making raw material recognizing and proportioning device | |
| CN220195600U (en) | Automatic conveyer belt with letter sorting function | |
| CN211717454U (en) | Building wall straightness detection device that hangs down | |
| CN216955515U (en) | Hollow brick intensity detection device for construction | |
| CN212963594U (en) | Automatic material weighing system for feed inlet | |
| CN212906314U (en) | Detection device for detecting transparent label | |
| CN208575835U (en) | A kind of glass multidimensional mounting robot | |
| CN215945788U (en) | Hardness measuring device is used in production of steel fibre cement well lid | |
| CN205328492U (en) | Automatic elevator arrangement of intelligence | |
| CN210895572U (en) | Sign indicating number detection device is swept to outward appearance | |
| CN208855696U (en) | A kind of bearing transfer car(buggy) | |
| CN209606266U (en) | A kind of water content of sandstone detection system | |
| CN216791725U (en) | Concrete sampling equipment for building engineering detection | |
| CN211279609U (en) | Robot automatic sorting system | |
| CN211086003U (en) | Mixture moisture detection device | |
| CN219882552U (en) | Synthetic resin tile cutting device | |
| CN212883589U (en) | Automatic sorting electronic scale | |
| CN210879692U (en) | Cement loading manipulator | |
| CN103793790A (en) | Intelligent processing device for delivering blood out of bank | |
| CN218121164U (en) | Filling weighing display controller for industrial production | |
| CN218463911U (en) | A automatic weighing metering device for gesso | |
| CN219766059U (en) | Finished product outward appearance detection device is used in keyboard production | |
| CN208288463U (en) | A kind of silica gel product appearance automatic checkout equipment | |
| CN212658327U (en) | Automatic mortar feeding and weighing device |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210212 |