CN114293668A - Combined connection module of prefabricated building and combined plate body structure thereof - Google Patents
Combined connection module of prefabricated building and combined plate body structure thereof Download PDFInfo
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- CN114293668A CN114293668A CN202111673569.0A CN202111673569A CN114293668A CN 114293668 A CN114293668 A CN 114293668A CN 202111673569 A CN202111673569 A CN 202111673569A CN 114293668 A CN114293668 A CN 114293668A
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Abstract
The invention relates to the technical field of constructional engineering, in particular to a combined connecting module of an assembly type building and a combined plate body structure thereof, which comprises: a first connection template; a connecting plate is arranged on at least one side edge of the first connecting template; a clamping rack is arranged on the side edge of the connecting plate; a second connecting template; at least one side edge of the second connecting template is provided with a connecting hole; the connecting plate can be inserted into the connecting hole; the clamping assembly is arranged on the inner side wall of the connecting hole and used for clamping the clamping rack; reset assembly, reset assembly sets up on the second connection template, reset assembly is used for driving the joint subassembly with the separation of joint rack, the structure that this scheme of adoption provided need not to pass through the bolt with first connection template and second connection template or weld to die fixedly, and easy operation saves time and manpower.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a combined connecting module of an assembly type building and a combined plate body structure thereof.
Background
The building construction refers to production activities in the engineering construction implementation stage, is a construction process of various buildings, and can also be a process of changing various lines on a design drawing into a real object at a specified place, and comprises foundation engineering construction, main structure construction, roofing engineering construction, decoration engineering construction and the like, and the construction operation place is called a building construction site.
The fabricated building is a building which is formed by transferring a large amount of field operation work in the traditional construction mode to a factory, processing and manufacturing building components and accessories (such as floor slabs, wall slabs, stairs, balconies and the like) in the factory, transporting the components and accessories to a building construction site, and assembling and installing the components and the accessories on the site in a reliable connection mode. The prefabricated building mainly comprises a prefabricated concrete structure, a steel structure, a modern wood structure building and the like, and is a representative of a modern industrial production mode due to the adoption of standardized design, factory production, assembly construction, informatization management and intelligent application.
The present building templates are mostly locked through bolts or welding, when the templates need to be disassembled after use, the operation is complex, the operation is inconvenient, and the splicing and the disassembling are not only time-wasting but also labor-wasting.
Therefore, there is a need to provide a new modular connection module for prefabricated buildings and a panel structure thereof to solve the above-mentioned problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides the combined connecting module of the assembly type building and the combined plate body structure thereof, which can be used for quickly mounting and dismounting the building template, and have simple operation and time and labor saving.
In a first aspect, the present invention provides a modular connection module for a prefabricated building, comprising: a first connection template; a connecting plate is arranged on at least one side edge of the first connecting template; a clamping rack is arranged on the side edge of the connecting plate; a second connecting template; at least one side edge of the second connecting template is provided with a connecting hole; the connecting plate can be inserted into the connecting hole; the clamping assembly is arranged on the inner side wall of the connecting hole and used for clamping the clamping rack; the reset assembly is arranged on the second connecting template and used for driving the clamping assembly to be separated from the clamping rack.
Preferably, the clamping assembly includes: the clamping teeth are rotatably arranged on the inner side wall of the connecting hole; the limiting block is fixedly connected to the inner side wall of the connecting hole and is positioned on one side, close to the opening of the connecting hole, of the clamping tooth; the limiting block is used for limiting the clamping teeth to rotate towards the opening direction of the connecting hole; the spring, the one end of spring with the inside wall rigid coupling of connecting hole, the other end is connected the lateral wall of joint tooth, work as the joint tooth not with during the joint of joint rack, the spring promotes the joint tooth contacts the stopper.
Preferably, the reset assembly comprises: the reset rod penetrates through the second connecting template, and one end of the reset rod is positioned in the connecting hole; a blind hole is formed in the position, where the clamping tooth is installed, of the connecting hole; a sliding groove is formed in the side wall of the blind hole; a rotating shaft is fixedly connected to the clamping tooth and is in sliding fit with the sliding groove; one end of the reset rod is fixedly connected with the rotating shaft, and the other end of the reset rod extends to the outer side of the second connecting template; the bottom surface of blind hole with be provided with reset spring between the pivot, work as joint tooth with when joint rack joint, reset spring is compressed.
Preferably, the other end of the reset rod is provided with a handle.
Preferably, the depth of the connecting hole is greater than the length of the connecting plate.
Preferably, the connecting holes are rectangular holes, a group of opposite inner side walls of the connecting holes are respectively provided with a stop strip, and the stop strips are provided with grooves matched with the clamping racks; when the reset assembly drives the clamping assembly to be separated from the clamping rack, the bottom end of the clamping assembly is flush with the blocking strip; the width of the connecting plate is matched with the distance between the two stopping strips.
Preferably, the connecting plates on the first connecting template correspond to the connecting holes on the first connecting template in position.
Preferably, the clamping rack is fixedly connected to the side wall of the connecting plate.
In a second aspect, the invention provides a combined plate structure of an assembly type building, which comprises the combined connecting module, wherein a plurality of combined connecting modules are distributed in an array manner, and adjacent combined connecting modules are connected with a connecting plate in a matching manner through connecting holes and are clamped and fixed with a clamping rack through a clamping assembly.
Preferably, the surface of the modular connection module is coated with a non-slip coating.
Compared with the related art, the method has the following beneficial effects:
the invention provides a combined connecting module of an assembly type building and a combined plate body structure thereof.A first connecting template and a second connecting template which need to be spliced and assembled are assembled, a connecting plate on the first connecting template is inserted into a connecting hole on the second connecting template, then the first connecting template and the second connecting template are quickly fixed through a clamping assembly, and the clamping assembly and a clamping rack can be quickly separated through a reset assembly, so that the first connecting template and the second connecting template are quickly separated; need not to pass through the bolt with first connection template and second connection template or weld to die fixedly, easy operation saves time and manpower.
Drawings
Fig. 1 is a schematic structural diagram of a combined connection module of a prefabricated building provided by the invention;
FIG. 2 is a schematic structural diagram of a first connection template according to the present invention;
FIG. 3 is a schematic structural diagram of a second connecting template according to the present invention;
FIG. 4 is a schematic view of the internal structure of a second connecting template according to the present invention;
FIG. 5 is an enlarged view of the structure at A in FIG. 4;
FIG. 6 is a schematic structural view of the clamping teeth of FIG. 5 after being removed;
fig. 7 is a schematic structural diagram of a combined plate structure of a fabricated building according to the present invention.
In the figure: 1. a first connection template; 2, connecting a plate; 3 clamping the rack; 4 a second connecting template; 5, connecting holes; 6, clamping the assembly; 7, resetting the component; 8, clamping teeth; 9 a limiting block; 10 springs; 11 a reset lever; 12, blind holes; 13 chute; 14 a rotating shaft; 15 a return spring; 16 a handle; 17 a stop bar; 18 grooves.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1 to 7, in a first aspect, the present invention provides a modular connection module for a prefabricated building, including: a first connecting template 1; a connecting plate 2 is arranged on at least one side edge of the first connecting template 1; a clamping rack 3 is arranged on the side edge of the connecting plate 2; a second connecting template 4; at least one side edge of the second connecting template 4 is provided with a connecting hole 5; the connecting plate 2 can be inserted into the connecting hole 5; the clamping assembly 6 is arranged on the inner side wall of the connecting hole 5, and the clamping assembly 6 is used for clamping the clamping rack 3; reset assembly 7, reset assembly 7 sets up on the second connection template 4, reset assembly 7 is used for driving joint subassembly 6 with the separation of joint rack 3.
Specifically, the structure of the first connecting template 1 may be a plate-shaped structure, the plate-shaped structure may be a regular plate-shaped structure, such as a rectangular parallelepiped plate or a square plate, or an irregular plate-shaped structure, the shape of the plate-shaped structure is not limited in this embodiment, the material of the first connecting template 1 may be a metal material or a wood material, and the material of the first connecting template 1 is not limited in this embodiment. The structure of the second connecting template 4 may be a plate-shaped structure, the plate-shaped structure may be a regular plate-shaped structure, such as a rectangular plate-shaped structure or a square plate-shaped structure, the plate-shaped structure may be an irregular plate-shaped structure, the shape of the plate-shaped structure is not limited in this embodiment, the material of the second connecting template 4 may be a metal material or a wood material, the material of the first connecting template 1 is not limited in this embodiment,
specifically, the connection hole 5 may be a rectangular solid hole, the connection hole 5 is provided in the side wall of the second connection template 4, it can be understood that, in order to improve the connection stability between the first connection template 1 and the second connection template 4, the depth of the connection hole 5 may be set to be greater than the length of the connection plate 2, and then it is ensured that the connection plate 2 may be completely inserted into the connection hole 5, in order to further ensure the connection stability between the first connection template 1 and the second connection template 4, the connection hole 5 and the connection plate 2 adopt a shaft hole matching manner, or may adopt an interference fit connection manner to connect, and then improve the connection stability between the first connection template 1 and the second connection template 4.
Specifically, above-mentioned joint rack 3 can directly be purchased and obtain, fixes the connecting rack who obtains purchasing at the side of connecting plate 2, specifically speaking, the above-mentioned mode of fixing connecting rack at the side of connecting plate 2 can be the bolt fastening, also can be that other modes are fixed, and this scheme does not restrict above-mentioned fixed mode. Above-mentioned joint rack 3 also can be in the manufacturing process of first connection template 1, directly open joint tooth 8 and the joint rack 3 of stroke on the side of connecting plate 2, joint rack 3 and connecting plate 2 integrated into one piece promptly, can further improve the stability of being connected between joint rack 3 and the connecting plate 2, and then improve the stability of being connected between first connection template 1 and the second connection template 4.
Specifically, the structure of the clamping assembly 6 may include: the clamping device comprises clamping teeth 8 and a clamping rod, wherein through holes are formed in the side wall of a connecting hole 5, the clamping rod is connected with a second connecting template 4 in a sliding mode through the through holes, the clamping teeth 8 are arranged at the end parts of a re-clamping rod, a reset spring 15 is arranged between the clamping teeth 8 and the inner wall of the connecting hole 5, the clamping rod can be pulled to drive the clamping teeth 8 to move along the axial direction of the clamping rod, when the first connecting template 1 and the second connecting template 4 are required to be connected in the using process, the clamping rod is pulled to enable the clamping teeth 8 to move, at the moment, a connecting plate 2 on the first connecting template 1 is inserted into the connecting hole 5 of the second connecting template 4, after the connecting plate 2 completely enters the connecting hole 5, the clamping rod is loosened, the clamping teeth 8 are clamped on a clamping rack 3 under the reset action of the reset spring 15, and then the first connecting template 1 and the second connecting template 4 are fixed, it can be understood that, in order to ensure the connection stability of the first connection template 1 and the second connection template 4, a plurality of clamping assemblies 6 may be disposed on the side wall of the second connection template 4, and a user may select the number of the clamping assemblies 6 according to practical situations, and the present scheme does not limit the number of the clamping assemblies 6.
The invention provides a combined connecting module of an assembly type building and a combined plate body structure thereof.A first connecting template 1 and a second connecting template 4 which need to be spliced and assembled are assembled, a connecting plate 2 on the first connecting template 1 is inserted into a connecting hole 5 on the second connecting template 4, then the first connecting template 1 and the second connecting template 4 are quickly fixed through a clamping component 6, and the clamping component 6 and a clamping rack 3 can be quickly separated through a resetting component 7, so that the first connecting template 1 and the second connecting template 4 are quickly separated; need not to pass through the bolt with first connecting templates 1 and second connecting templates 4 or weld to die fixedly, easy operation saves time and manpower.
In one embodiment, referring to fig. 4-6, the clamping assembly 6 includes: the clamping teeth 8 are rotatably arranged on the inner side wall of the connecting hole 5; the limiting block 9 is fixedly connected to the inner side wall of the connecting hole 5, and the limiting block 9 is positioned on one side, close to the opening of the connecting hole 5, of the clamping tooth 8; the limiting block 9 is used for limiting the clamping teeth 8 to rotate towards the opening direction of the connecting hole 5; spring 10, spring 10 one end with the inside wall rigid coupling of connecting hole 5, the other end is connected the lateral wall of joint tooth 8, work as joint tooth 8 not with during the joint of joint rack 3, spring 10 promotes joint tooth 8 contacts stopper 9.
Specifically, in the use, when inserting connecting plate 2 in connecting hole 5, joint rack 3 on connecting plate 2 extrudees towards the inside of connecting hole 5, make joint tooth 8 rotate towards the bottom direction of connecting hole 5, back in connecting hole 5 is got into to connecting plate 2 is whole, under spring 10's impetus, joint tooth 8 joint is between two teeth in joint rack 3, this moment, stopper 9 butt is on the lateral wall of joint tooth 8, and then can avoid joint tooth 8 to rotate towards the opening direction of connecting hole 5. At this time, the clamping rack 3 is clamped in the connecting hole 5 through the clamping teeth 8, and then the first connecting template 1 and the second connecting template 4 are fixed.
In one embodiment, please refer to fig. 5, fig. 6; the reset assembly 7 comprises: the reset rod 11 penetrates through the second connecting template 4, and one end of the reset rod 11 is positioned inside the connecting hole 5; a blind hole 12 is formed at the position where the clamping tooth 8 is arranged in the connecting hole 5; a sliding groove 13 is arranged on the side wall of the blind hole 12; a rotating shaft 14 is fixedly connected to the clamping tooth 8, and the rotating shaft 14 is in sliding fit with the sliding groove 13; one end of the reset rod 11 is fixedly connected with the rotating shaft 14, and the other end of the reset rod 11 extends to the outer side of the second connecting template 4; a return spring 15 is arranged between the bottom surface of the blind hole 12 and the rotating shaft 14, and when the clamping teeth 8 are clamped with the clamping rack 3, the return spring 15 is compressed.
Specifically, in the use, when first connection template 1 that will connect separates with second connection template 4 when needs, pull above-mentioned release link 11, release link 11 outwards removes, and drive pivot 14 and remove in spout 13, at this moment, reset spring 15 is compressed, the joint tooth 8 that sets up on pivot 14 moves along with pivot 14 removes, joint tooth 8 progressively separates until complete separation with joint rack 3, at this moment, alright draw from connecting hole 5 on second connecting plate 2 with connecting plate 2 on the first connection template 1, with the purpose of realizing separating first connection template 1 and second connection template 4, and is easy to operate, and convenient to use.
In one embodiment, the other end of the release link 11 is provided with a handle 16. A handle 16 is provided at the other end of the reset lever 11 to facilitate a user pulling the reset lever 11.
In one embodiment, the depth of the connection hole 5 is greater than the length of the connection plate 2. With the arrangement, the connecting plates 2 can completely enter the connecting holes 5, so that the connecting stability between the first connecting template 1 and the second connecting template 4 is improved.
In a specific embodiment, the connecting hole 5 is a rectangular hole, a set of opposite inner side walls of the connecting hole 5 are respectively provided with a blocking strip 17, and the blocking strip 17 is provided with a groove 18 adapted to the clamping rack 3; when the reset component 7 drives the clamping component 6 to separate from the clamping rack 3, the bottom end of the clamping component 6 is flush with the stop strip 17; the width of the connecting plate 2 is adapted to the distance between the two stop strips 17.
Specifically, the stop bars 17 are arranged, so that gaps between the connecting plates 2 and the connecting holes 5 can be filled, the connection stability between the connecting plates 2 and the connecting holes 5 is further improved, and the connection stability between the two connecting templates is further improved.
In one embodiment, the connection plates 2 on the first connection template 1 correspond to the positions of the connection holes 5 on the first connection template 1. Specifically, a plurality of connecting plates 2 may be disposed on one first connecting template 1, for example, the shape of the first connecting template 1 is square, then one connecting plate 2 may be disposed on each of four sides of the first connecting template 1, correspondingly, four second connecting templates 4 may be disposed on the first connecting template 1, one or more connecting holes 5 are respectively formed in the four second connecting templates 4, the four connecting plates 2 on the first connecting template 1 are respectively inserted into the connecting holes 5 of one second connecting template 4, and at this time, the plate structure formed by connecting one first connecting template 1 and the four second connecting templates 4 may be formed. The above illustration is not the only connection assembly method in this solution, and the user can set the connection positions of the first connection template 1 and the second connection template 4 according to the needs of the user, so as to form the combined plate structures with different shapes as required.
In a specific embodiment, the clamping rack 3 is fixedly connected to a side wall of the connecting plate 2. The connection stability between the connecting plate 2 and the clamping rack 3 can be effectively improved by adopting a fixedly connecting mode.
In a second aspect, the invention provides a combined plate structure of an assembly type building, which comprises the combined connecting module, wherein a plurality of combined connecting modules are distributed in an array manner, and adjacent combined connecting modules are matched and connected with a connecting plate 2 through connecting holes 5 and are clamped and fixed with a clamping rack 3 through a clamping assembly 6.
The working principle of the combined plate structure of the fabricated building provided by the invention is as follows: the first connecting template 1 and the second connecting template which need to be spliced and assembled are abutted, so that the connecting plate 2 on the first connecting template 1 is inserted into the connecting hole 5 on the second connecting template 4, in the inserting process, the clamping rack 3 pushes the clamping teeth 8 to rotate towards the bottom surface direction of the connecting hole 5, after the edge of the first connecting template 1 is contacted with the edge of the second connecting template 4, the clamping rack 3 does not push the clamping teeth 8, at the moment, the clamping teeth 8 are clamped between two adjacent teeth of the clamping rack 3, and under the action of the limiting block 9, the clamping teeth 8 cannot rotate towards the opening direction of the connecting hole 5; at this moment, the clamping teeth 8 and the clamping racks 3 are clamped, namely the connecting plate 2 is clamped in the connecting hole 5, and at this moment, the first connecting template 1 is clamped and fixed with the second connecting template 4. A connection module is formed by the first connection template 1 and the second connection template 4, a plurality of connection modules are formed in the same mode, then the connection hole 5 is formed in one connection module, the connection plate 2 is formed in the other connection module, the clamping rack 3 is arranged on the connection plate 2 in the same mode, the clamping assembly 6 and the reset assembly 7 are arranged in the connection hole 5 in the connection module, the two connection modules are connected in the same mode with the first connection template 1 and the second connection template 4, and the combined plate body structure of the scheme is formed.
Specifically, the composite board body structure provided by the scheme can be used as a bottom plate of a scaffold in the building construction process and also can be used as a base material of any other required platy board, and the scheme does not limit the due transportation of the composite board body structure.
In one embodiment, the surface of the composite plate body structure is coated with a non-slip coating.
The surface of the combined plate body structure is coated with the anti-slip coating, and when the combined connecting module is used as the bottom plate of the scaffold, the anti-slip coating can increase the friction force of the surface of the combined plate body structure, so that the construction safety of workers is ensured.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A modular connection module for a prefabricated building, comprising:
a first connecting template (1); a connecting plate (2) is arranged on at least one side edge of the first connecting template (1); a clamping rack (3) is arranged on the side edge of the connecting plate (2);
a second connecting template (4); at least one side edge of the second connecting template (4) is provided with a connecting hole (5); the connecting plate (2) can be inserted into the connecting hole (5);
the clamping assembly (6) is arranged on the inner side wall of the connecting hole (5), and the clamping assembly (6) is used for clamping the clamping rack (3);
reset assembly (7), reset assembly (7) set up on second connection template (4), reset assembly (7) are used for driving joint subassembly (6) with joint rack (3) separation.
2. Modular connection module of prefabricated buildings according to claim 1, characterized in that the clamping assembly (6) comprises:
the clamping teeth (8) are rotationally arranged on the inner side wall of the connecting hole (5);
the limiting block (9), the limiting block (9) is fixedly connected to the inner side wall of the connecting hole (5), and the limiting block (9) is located on one side, close to the opening of the connecting hole (5), of the clamping tooth (8); the limiting block (9) is used for limiting the clamping teeth (8) to rotate towards the opening direction of the connecting hole (5);
spring (10), the one end of spring (10) with the inside wall rigid coupling of connecting hole (5), the other end is connected the lateral wall of joint tooth (8), work as joint tooth (8) do not with during joint rack (3) joint, spring (10) promote joint tooth (8) contact stopper (9).
3. Modular connection module of prefabricated buildings according to claim 2, characterized in that said reset assembly (7) comprises:
the reset rod (11), the reset rod (11) runs through the second connecting template (4), and one end of the reset rod (11) is positioned inside the connecting hole (5);
a blind hole (12) is formed at the position where the clamping tooth (8) is installed in the connecting hole (5); a sliding groove (13) is arranged on the side wall of the blind hole (12);
a rotating shaft (14) is fixedly connected to the clamping tooth (8), and the rotating shaft (14) is in sliding fit with the sliding groove (13);
one end of the reset rod (11) is fixedly connected with the rotating shaft (14), and the other end of the reset rod (11) extends to the outer side of the second connecting template (4);
the bottom surface of blind hole (12) with be provided with reset spring (15) between pivot (14), work as joint tooth (8) with when joint rack (3) joint, reset spring (15) are compressed.
4. The modular connection module of a fabricated building according to claim 3, characterized in that the other end of the return arm (11) is provided with a handle (16).
5. Modular connection module of prefabricated construction according to claim 1, characterised in that the depth of the connection holes (5) is greater than the length of the connection plates (2).
6. The modular connection module of the prefabricated building according to claim 1, wherein the connection hole (5) is a rectangular hole, a set of opposite inner side walls of the connection hole (5) are respectively provided with a stop strip (17), and the stop strips (17) are provided with grooves (18) adapted to the clamping racks (3); when the reset assembly (7) drives the clamping assembly (6) to be separated from the clamping rack (3), the bottom end of the clamping assembly (6) is flush with the blocking strip (17); the width of the connecting plate (2) is matched with the distance between the two stopping strips (17).
7. The modular connection module of prefabricated construction according to claim 1, wherein the connection plate (2) on the first connection form (1) corresponds to the position of the connection hole (5) on the first connection form (1).
8. The modular connection module of an assembly building according to claim 1, characterized in that the clamping rack (3) is fastened to the side wall of the connection plate (2).
9. A combined plate structure of an assembly type building, which is characterized by comprising the combined connecting module as claimed in any one of claims 1 to 8, wherein a plurality of combined connecting modules are distributed in an array manner, and adjacent combined connecting modules are matched and connected with a connecting plate (2) through connecting holes (5) and are clamped and fixed with a clamping rack (3) through clamping components (6).
10. The composite panel structure according to claim 9, wherein the surface of the composite link module is coated with a non-slip coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111673569.0A CN114293668A (en) | 2021-12-31 | 2021-12-31 | Combined connection module of prefabricated building and combined plate body structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111673569.0A CN114293668A (en) | 2021-12-31 | 2021-12-31 | Combined connection module of prefabricated building and combined plate body structure thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114293668A true CN114293668A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111673569.0A Withdrawn CN114293668A (en) | 2021-12-31 | 2021-12-31 | Combined connection module of prefabricated building and combined plate body structure thereof |
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| CN (1) | CN114293668A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983057A (en) * | 2021-03-31 | 2021-06-18 | 江苏苏邑设计集团有限公司 | Movable outdoor rest station capable of being dynamically increased and decreased |
-
2021
- 2021-12-31 CN CN202111673569.0A patent/CN114293668A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983057A (en) * | 2021-03-31 | 2021-06-18 | 江苏苏邑设计集团有限公司 | Movable outdoor rest station capable of being dynamically increased and decreased |
| CN112983057B (en) * | 2021-03-31 | 2022-09-13 | 江苏苏邑设计集团有限公司 | Movable outdoor rest station capable of being dynamically increased and decreased |
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Application publication date: 20220408 |