CN215339769U - Building wind environment airflow simulation equipment - Google Patents
Building wind environment airflow simulation equipment Download PDFInfo
- Publication number
- CN215339769U CN215339769U CN202121647485.5U CN202121647485U CN215339769U CN 215339769 U CN215339769 U CN 215339769U CN 202121647485 U CN202121647485 U CN 202121647485U CN 215339769 U CN215339769 U CN 215339769U
- Authority
- CN
- China
- Prior art keywords
- plate
- sliding
- fixedly connected
- storage box
- sides
- 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.)
- Expired - Fee Related
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 14
- 239000003570 air Substances 0.000 claims 5
- 239000012080 ambient air Substances 0.000 claims 2
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The utility model discloses building wind environment airflow simulation equipment which comprises a storage box, wherein the bottom of an inner cavity of the storage box is fixedly connected with a bottom plate, two sides of the inner cavity of the storage box are sequentially bolted with a sliding plate and a square slide rod from left to right, the bottom ends of the sliding plate and the square slide rod penetrate through the bottom plate and are fixedly connected to the bottom of the inner cavity of the storage box, the surfaces of the sliding plate and the square slide rod are provided with a lifting plate in a sliding mode, two sides of the top of the lifting plate are fixedly connected with fixing seats through connecting plates, two sides of the fixing seats are respectively connected with the surfaces of the sliding plate and the square slide rod in a sliding mode, and the top of the fixing seats penetrates through the storage box and are fixedly connected with a display. The utility model discloses a through setting up storage mechanism, utilize the cylinder as the driving source, can stimulate the backup pad and remove to the left side to two sets of dwangs in the top of swing to the left side can drive and carry the arm-tie and constantly move down, can drive fixing base and display and move down in step when carrying the arm-tie and move down, get into in the containing box until the display.
Description
Technical Field
The utility model belongs to the technical field of building design, and particularly relates to building wind environment airflow simulation equipment.
Background
In the building design, need utilize equipment to simulate building wind environment to can be in order to maintain good ventilation environment, can avoid pollution such as waste gas to flow back indoor simultaneously, need avoid forming great wind-force between building and the building simultaneously, bring the potential safety hazard for passing pedestrian.
Designer need utilize software to simulate building wind environment air current on the display, however traditional analogue means can't independently accomodate with the display, designer when needs remove it elsewhere, can't carry out fine protection to the display, thereby can make the foreign object striking or bump the display, and then can make the display damage, influence the normal clear of simulation experiment, can delay designer's valuable time simultaneously, consequently, the technical staff in the art provides a building wind environment air current analogue means, in order to solve the problem that proposes in the above-mentioned background art.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide building wind environment airflow simulation equipment which can independently store a display and avoid the problem that the display cannot be well protected when the display needs to be moved to other places, so that foreign objects can collide or collide with the display, and the display can be damaged.
In order to achieve the purpose, the utility model provides the following technical scheme:
a building wind environment airflow simulation device comprises a storage box, wherein the bottom of an inner cavity of the storage box is fixedly connected with a bottom plate, two sides of the inner cavity of the storage box are sequentially bolted with a sliding plate and a square sliding rod from left to right, the bottom ends of the sliding plate and the square sliding rod penetrate through the bottom plate and are fixedly connected to the bottom of the inner cavity of the storage box, a lifting plate is arranged on the surfaces of the sliding plate and the square sliding rod in a sliding mode, two sides of the top of the lifting plate are fixedly connected with a fixed seat through a connecting plate, two sides of the fixed seat are respectively connected with the sliding plate and the square sliding rod in a sliding mode, the top of the fixed seat penetrates through the storage box and is fixedly connected with a display, and a storage mechanism which can be matched with the display to use is arranged in the storage box;
through above-mentioned technical scheme, slide and square slide bar can slide spacingly to carrying and draw board and fixing base, have improved the stability of carrying and drawing board and fixing base, and the usable cylinder of receiving mechanism is as the driving source simultaneously, drives under the assistance of backup pad and dwang and carries the board and move down to accomodate the display, avoid the display to damage.
Further, the containing mechanism comprises an air cylinder, one side of the air cylinder is arranged on the left side of the containing box in a sliding mode, a through groove is vertically formed in one side of the containing box, a vertical groove is formed in one side of the sliding plate, a piston rod of the air cylinder sequentially penetrates through the through groove and the vertical groove and is fixedly connected with a supporting plate, the front face and the back face of the lifting plate and the front face and the back face of the bottom plate are rotatably connected with rotating rods through movable seats, one sides, close to each other, of the rotating rods are rotatably connected with the top and the bottom of the supporting plate through the movable seats, a moving plate is arranged on the surface of the square sliding rod in a sliding mode, sliding ways are transversely arranged on the front face and the back face of the moving plate, sliding seats are arranged in sliding cavities of the sliding seats in a sliding mode, a limiting plate is fixedly connected to one side of each sliding seat, and the left side of the limiting plate is fixedly connected to the front face and the back face of the right side of the supporting plate;
through above-mentioned technical scheme, the cylinder can drive the dwang swing to the left side under the assistance of backup pad to the board is constantly moved down to the drive is carried and is drawn, and then can drive fixing base and display and move down in step and accomodate the display into the containing box, avoids foreign object striking or collides the display, makes the display damage.
Furthermore, the bottom of the moving plate is fixedly connected with an auxiliary rod, the bottom end of the auxiliary rod sequentially penetrates through the bottom plate and the containing box and extends downwards, one side, close to the bottom plate, of the moving plate is fixedly connected with a first spring, and the inner ring of the first spring is sleeved on the surface of the auxiliary rod;
through above-mentioned technical scheme, the auxiliary rod can slide spacingly to the movable plate, has improved the stability of movable plate, and elasticity through first spring is kick-backed, can cushion the movable plate, has improved the stability of movable plate.
Furthermore, the front side and the back side of the left side of the containing box are both vertically provided with a sliding clamping groove, the surface of the air cylinder is sleeved with a positioning plate, and the front side and the back side of the right side of the positioning plate are both fixedly connected with a sliding clamping seat matched with the sliding clamping groove;
through above-mentioned technical scheme, the locating plate drives the slip cassette and slides in sliding groove, can carry on spacingly to the cylinder, avoids the cylinder to break away from one side of containing box when displacement from top to bottom.
Furthermore, the top and the bottom of the supporting plate are fixedly connected with a second spring, and one side, close to each other, of the lifting plate and the bottom plate is movably connected with one end of the second spring;
through the technical scheme, the second spring can be used for buffering and limiting the lifting plate and the bottom plate, and the lifting plate and the bottom plate can be prevented from directly impacting the supporting plate.
Furthermore, the right side of the top of the limiting plate is fixedly connected with an anti-falling block, and the left side of the top of the moving plate is fixedly connected with an anti-falling clamping plate matched with the anti-falling block for use;
through above-mentioned technical scheme, the anticreep cardboard blocks spacingly to the anticreep piece to can carry out spacingly to the limiting plate, avoid the limiting plate to break away from the movable plate.
Furthermore, radiating fans are embedded in two sides of the top of the fixed seat, L-shaped clamping plates are fixedly connected to two sides of the top of the containing box, and inner cavities of the L-shaped clamping plates are clamped with two sides of the fixed seat;
through above-mentioned technical scheme, radiator fan can dispel the heat to the display, avoids the display overheated, and L type cardboard can conveniently utilize external baffle to carry out the joint to the top of containing box when the containing box is accomodate into to the display simultaneously and seal.
In conclusion, the utility model has the following beneficial effects:
1. by arranging the containing mechanism, the cylinder is used as a driving source to pull the supporting plate to move towards the left side, at the moment, the rotating rod is driven to swing towards the left side under the pulling of the supporting plate under the assistance of the movable seat, because the lower two groups of rotating rods are movably connected on the fixed bottom plate, the upper two groups of rotating rods which swing to the left side can drive the lifting plate to continuously move downwards, and simultaneously the air cylinder can synchronously move downwards, the fixing seat and the display can be driven to synchronously move downwards when the lifting plate moves downwards until the display enters the containing box, meanwhile, the movable plate slides on the square slide bar and the limiting plate slides on the movable plate, so that the supporting plate can be limited in a sliding manner, the stability of the supporting plate is improved, and the situation that when the display needs to be moved to other places is avoided, the display cannot be well protected so that foreign objects may hit or collide with the display, thereby damaging the display.
2. The auxiliary rod can limit the sliding of the movable plate by arranging the auxiliary rod and the first spring, so that the stability of the movable plate is improved, meanwhile, the movable plate can be buffered by utilizing the elastic resilience of the first spring, the air cylinder can be limited by arranging the sliding clamping groove, the positioning plate and the sliding clamping seat, so that the stability of the air cylinder in the vertical displacement is improved, the lifting plate and the bottom plate can be limited by arranging the second spring, the lifting plate and the bottom plate can be buffered and effectively prevented from being impacted by the lifting plate and the bottom plate, the limiting plate can be limited by arranging the anti-falling block and the anti-falling clamping plate, the limiting plate is prevented from being separated from the surface of the movable plate when moving, so that the stability of the supporting plate is influenced, the heat dissipation effect of the device on a display is improved by arranging the heat dissipation fan, the overheating of the display is avoided, the normal operation of a simulation experiment is influenced, the fixing seat can be limited by arranging the L-shaped clamping plate, meanwhile, when the storage box is stored in the display, the top of the storage box is sealed by the clamping of the external baffle and the L-shaped clamping plate.
Drawings
FIG. 1 is a schematic structural view of the present embodiment;
FIG. 2 is a sectional view of the structure of the present embodiment;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is an enlarged view at B in FIG. 2;
fig. 5 is a partial exploded view of the structure of the storage mechanism of the present embodiment.
Description of reference numerals: 1. a storage box; 2. a square slide bar; 3. a base plate; 4. lifting the plate; 5. a fixed seat; 6. a first spring; 7. a display; 8. an L-shaped clamping plate; 9. a storage mechanism; 901. a cylinder; 902. a support plate; 903. rotating the rod; 904. moving the plate; 905. a limiting plate; 906. a slideway; 907. a slide base; 10. a heat radiation fan; 11. a slide plate; 12. a vertical slot; 13. an auxiliary lever; 14. an anti-drop clamp plate; 15. an anti-drop block; 16. a second spring; 17. positioning a plate; 18. a sliding clamping groove; 19. a sliding card holder; 20. a through groove.
Detailed Description
Example (b):
the present invention is described in further detail below with reference to figures 1-5.
The utility model provides a building wind environment air current simulation equipment, including containing box 1, the bottom fixedly connected with bottom plate 3 of containing box 1 inner chamber, all be provided with the auxiliary walking wheel around containing box 1 bottom, the mobility of equipment has been improved, the both sides of containing box 1 inner chamber have from a left side to the right side in proper order the bolt connect have slide 11 and square slide bar 2 and slide 11 and square slide bar 2 the bottom all run through bottom plate 3 and fixed connection in the bottom of containing box 1 inner chamber, slide 11 and square slide bar 2's surface sliding is provided with and carries arm-tie 4, the both sides at arm-tie 4 top all are connected with slide 11 and square slide bar 2's surface sliding through connecting plate fixedly connected with fixing base 5 and fixing base 5's both sides respectively, containing box 1 is run through at fixing base 5's top and fixedly connected with display 7, be provided with the receiving mechanism 9 that can cooperate display 7 to use in containing box 1.
The containing mechanism 9 comprises an air cylinder 901, one side of the air cylinder 901 is arranged at the left side of the containing box 1 in a sliding manner, the front side and the back side at the left side of the containing box 1 are vertically provided with sliding clamping grooves 18, the surface of the air cylinder 901 is sleeved with a positioning plate 17, the front side and the back side at the right side of the positioning plate 17 are fixedly connected with a sliding clamping seat 19 matched with the sliding clamping grooves 18 for use, the air cylinder 901 can be limited in a sliding manner, the stability of the air cylinder 901 during up-and-down displacement is improved, one side of the containing box 1 is vertically provided with a through groove 20, one side of a sliding plate 11 is provided with a vertical groove 12, a piston rod of the air cylinder 901 sequentially penetrates through the through groove 20 and the vertical groove 12 and is fixedly connected with a supporting plate 902, the front side and the back side of the lifting plate 4 and the bottom plate 3 are rotatably connected with a rotating rod 903 through a movable seat, the side, which the rotating rod 903 is close to each other, the top moving plate and the bottom of the supporting plate 902 are rotatably connected through the movable seat, the surface of the square sliding rod 2 is provided with a movable plate 904 in a sliding manner, the front side and the back side of the moving plate 904 are both transversely provided with slideways 906, an inner cavity of the slideways 906 is provided with a sliding seat 907 in a sliding manner, one side of the sliding seat 907 is fixedly connected with a limiting plate 905, the left side of the limiting plate 905 is fixedly connected with the front side and the back side of the right side of the supporting plate 902, the right side of the top of the limiting plate 905 is fixedly connected with an anti-drop clamping plate 15, the left side of the top of the moving plate 904 is fixedly connected with an anti-drop clamping plate 14 matched with the anti-drop clamping plate 15, the anti-drop clamping plate 15 and the anti-drop clamping plate 14 are matched for use, the limiting plate 905 can be limited, the limiting plate 905 is prevented from being separated from the surface of the moving plate 904 during moving, so that the stability of the supporting plate 902 is influenced, the accommodating mechanism 9 utilizes the air cylinder 901 as a driving source to pull the supporting plate 902 to move leftwards, at the moment, under the assistance of the movable seat, the rotating rods 903 are driven to swing leftwards under the fixed bottom plate 3, thereby two sets of dwang 903 in top that the left side was swung can drive and carry pulling plate 4 and constantly move down, and cylinder 901 can move down simultaneously, can drive fixing base 5 and display 7 and move down in step when carrying pulling plate 4 to move down, until display 7 gets into in the containing box 1.
The bottom of the movable plate 904 is fixedly connected with an auxiliary rod 13, the bottom end of the auxiliary rod 13 sequentially penetrates through the bottom plate 3 and the containing box 1 and extends downwards, one side of the movable plate 904, which is close to the bottom plate 3, is fixedly connected with a first spring 6, the inner ring of the first spring 6 is sleeved on the surface of the auxiliary rod 13, the auxiliary rod 13 can limit the movable plate 904 in a sliding manner, so that the stability of the movable plate 904 is improved, the stability of the support plate 902 is improved, meanwhile, the movable plate 904 can be buffered by utilizing the elastic resilience of the first spring 6, the excessive shaking of the display 7 caused by the excessively fast moving down of the movable plate 904 is avoided, the top and the bottom of the support plate 902 are both fixedly connected with a second spring 16, one side of the lifting plate 4, which is close to the bottom plate 3, is movably connected with one end of the second spring 16, and the lifting plate 4 and the bottom plate 3 can be buffered and limited by utilizing the elastic resilience of the second spring 16, effectively keep away hands-free arm-tie 4 and 3 striking backup pads 902 of bottom plate, cause backup pads 902 to damage, the both sides at 5 tops of fixing base all inlay and be equipped with radiator fan 10, the equal fixedly connected with L type cardboard 8 in both sides at 1 top of containing box and the inner chamber of L type cardboard 8 and the both sides joint of fixing base 5, radiator fan 10 has improved the radiating effect of device to display 7, avoid display 7 overheated, influence the normal clear of simulation experiment, L type cardboard 8 can carry on spacingly to fixing base 5, can conveniently accomodate into containing box 1 at display 7 simultaneously, utilize external baffle and L type cardboard 8's joint to seal up containing box 1's top.
The working principle is as follows: when a designer needs to move the display 7, the designer starts the cylinder 901, the cylinder 901 drives the supporting plate 902 to move to the left, at this time, with the assistance of the movable seat, the supporting plate 902 can drive the four groups of rotating rods 903 to swing to the left at the same time, because the two groups of rotating rods 903 below are movably connected to the fixed bottom plate 3, the two groups of rotating rods 903 above swinging to the left can drive the lifting plate 4 to move down continuously on the surfaces of the square slide bar 2 and the sliding plate 11, and simultaneously the positioning plate 17 and the sliding clamping seat 19 slide in the sliding clamping groove 18, the auxiliary cylinder 901 synchronously moves down, the lifting plate 4 can drive the fixing seat 5 and the display 7 to synchronously move down while moving down, until the display 7 enters the containing box 1, the supporting plate 902 can drive the limiting plate 905 to move on the moving plate 904 to the left while moving down, and simultaneously, the 904 synchronously slides on the surface of the square slide bar 2, the accessory support plate 902 moves smoothly, effectively avoids when needs move display 7 elsewhere, can't carry out fine protection to display 7 to can make the foreign object striking or bump display 7, and then can make display 7 damage.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a building wind environment air current analog device, includes containing box (1), its characterized in that: the bottom of the inner cavity of the containing box (1) is fixedly connected with a bottom plate (3), two sides of the inner cavity of the containing box (1) are sequentially bolted with a sliding plate (11) and a square slide bar (2) from left to right, the bottom ends of the sliding plate (11) and the square slide bar (2) penetrate through the bottom plate (3) and are fixedly connected with the bottom of the inner cavity of the containing box (1), the surfaces of the sliding plate (11) and the square sliding rod (2) are provided with a lifting plate (4) in a sliding way, both sides of the top of the pulling plate (4) are fixedly connected with a fixed seat (5) through a connecting plate, both sides of the fixed seat (5) are respectively connected with the sliding plate (11) and the surface of the square sliding rod (2) in a sliding way, the top of the fixed seat (5) penetrates through the containing box (1) and is fixedly connected with a display (7), and a storage mechanism (9) which can be used in cooperation with the display (7) is arranged in the storage box (1).
2. A building wind ambient air flow simulator according to claim 1, in which: the storage mechanism (9) comprises an air cylinder (901), one side of the air cylinder (901) is arranged on the left side of a storage box (1) in a sliding mode, a through groove (20) is vertically arranged on one side of the storage box (1), a vertical groove (12) is arranged on one side of a sliding plate (11), a piston rod of the air cylinder (901) sequentially penetrates through the through groove (20) and the vertical groove (12) and is fixedly connected with a supporting plate (902), rotating rods (903) are rotatably connected to the front side and the back side of the pulling plate (4) and the bottom plate (3) through movable seats, one sides, close to each other, of the rotating rods (903) are rotatably connected with the top portion and the bottom portion of the supporting plate (902) through the movable seats, a movable plate (904) is arranged on the surface of the square sliding rod (2) in a sliding mode, sliding ways (906) are transversely arranged on the front side and the back side of the movable plate (904), and a sliding seat (907) is arranged in an inner cavity of the sliding way (906), one side of the sliding seat (907) is fixedly connected with a limiting plate (905), and the left side of the limiting plate (905) is fixedly connected to the front side and the back side of the right side of the supporting plate (902).
3. A building wind environment airflow simulation device according to claim 2, characterized in that: the bottom fixedly connected with auxiliary rod (13) of movable plate (904), bottom run through bottom plate (3) and containing box (1) and downwardly extending in proper order in the bottom of auxiliary rod (13), one side fixedly connected with first spring (6) that movable plate (904) and bottom plate (3) are close to each other, the surface at auxiliary rod (13) is established to the inner circle cover of first spring (6).
4. A building wind environment airflow simulation device according to claim 2, characterized in that: the storage box is characterized in that sliding clamping grooves (18) are vertically formed in the front and the back of the left side of the storage box (1), a positioning plate (17) is sleeved on the surface of the air cylinder (901), and a sliding clamping seat (19) matched with the sliding clamping grooves (18) and used is fixedly connected to the front and the back of the right side of the positioning plate (17).
5. A building wind environment airflow simulation device according to claim 2, characterized in that: the top and the bottom of the supporting plate (902) are both fixedly connected with a second spring (16), and one side of the lifting plate (4) and the bottom plate (3) which are close to each other are movably connected with one end of the second spring (16).
6. A building wind environment airflow simulation device according to claim 2, characterized in that: the right side fixedly connected with anticreep piece (15) at limiting plate (905) top, the left side fixedly connected with at movable plate (904) top is with anticreep cardboard (14) that anticreep piece (15) cooperation was used.
7. A building wind ambient air flow simulator according to claim 1, in which: the radiator fan (10) are embedded in the two sides of the top of the fixing seat (5), and the two sides of the top of the storage box (1) are fixedly connected with the L-shaped clamping plates (8) and the inner cavities of the L-shaped clamping plates (8) are connected with the two sides of the fixing seat (5) in a clamped mode.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202121647485.5U CN215339769U (en) | 2021-07-20 | 2021-07-20 | Building wind environment airflow simulation equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202121647485.5U CN215339769U (en) | 2021-07-20 | 2021-07-20 | Building wind environment airflow simulation equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
CN215339769U true CN215339769U (en) | 2021-12-28 |
Family
ID=79568610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202121647485.5U Expired - Fee Related CN215339769U (en) | 2021-07-20 | 2021-07-20 | Building wind environment airflow simulation equipment |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN215339769U (en) |
-
2021
- 2021-07-20 CN CN202121647485.5U patent/CN215339769U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN206819253U (en) | A kind of novel computer device for fixing hard disk | |
CN215339769U (en) | Building wind environment airflow simulation equipment | |
CN212207684U (en) | Satellite navigation signal simulator protector | |
CN209573747U (en) | A kind of BIM model quality inspection platform | |
CN215928974U (en) | Holographic simulation device for architectural design | |
CN215618121U (en) | Retractable mechanical arm for processing metal field lens seat | |
CN215497650U (en) | Electrical power distribution device | |
CN215007206U (en) | Stress simulation device for building structure design | |
CN209919833U (en) | Assembled electromechanical device maintenance device | |
CN213024236U (en) | Computer software and hardware protection device | |
CN214670425U (en) | Protection device of computer machine case | |
CN212430206U (en) | Software is open to place device with test host computer | |
CN221647335U (en) | Small-sized hydraulic power station | |
CN220659676U (en) | Welding table for machining automobile parts | |
CN220682398U (en) | Screen transfer device with protect function | |
CN214044615U (en) | Fixing device for electrical equipment with buffer function | |
CN219311304U (en) | Industrial vision positioner | |
CN221026288U (en) | Powder or granular bagged material extracting device | |
CN218162063U (en) | Low-voltage motor protection device | |
CN215184319U (en) | Battery protective housing for heat dissipation antidetonation type new energy automobile | |
CN209667047U (en) | A kind of automobile repairing bench convenient for lifting | |
CN214592346U (en) | Energy-saving control device convenient to remove | |
CN219549083U (en) | Bracket pad | |
CN218473662U (en) | Chip dismounting device with hot air gun | |
CN214699931U (en) | Portable projecting apparatus of school's teaching usefulness |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211228 |