CN114038625B - Winch cage paying-off device and method for production of transformer transposed conductor - Google Patents
Winch cage paying-off device and method for production of transformer transposed conductor Download PDFInfo
- Publication number
- CN114038625B CN114038625B CN202111262224.6A CN202111262224A CN114038625B CN 114038625 B CN114038625 B CN 114038625B CN 202111262224 A CN202111262224 A CN 202111262224A CN 114038625 B CN114038625 B CN 114038625B
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- paying
- cage
- cradle
- winch
- pay
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- 239000004020 conductor Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 230000017105 transposition Effects 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000010009 beating Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0003—Apparatus or processes specially adapted for manufacturing conductors or cables for feeding conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
- H01B13/0207—Details; Auxiliary devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F2027/2838—Wires using transposed wires
Abstract
The invention relates to a winch cage paying-off device and method for production of a transformer transposed conductor, and belongs to the technical field of transformers. The technical proposal is as follows: the paying-off device is formed by combining more than two paying-off units with the same structure, all paying-off units share one transposition head (8), the transposition head (8) is positioned behind the last paying-off unit, all paying-off unit spindles and the transposition head (8) are positioned on the same axis, and each paying-off unit is driven by an independent driving system. The beneficial effects of the invention are as follows: when transposed conductors with fewer electromagnetic wires are produced, the corresponding number of paying-off units are started according to production requirements, so that invalid wear of equipment is reduced, the failure rate of the equipment is effectively reduced, and the maintenance cost is reduced; on the other hand, the energy can be saved, and unnecessary energy waste is reduced. The sectional paying-off stranding cage is adopted, so that forced back-twist alignment mechanisms such as chain wheels, chains and gears are reduced, the equipment failure rate is reduced, and the use is flexible and convenient.
Description
Technical Field
The invention relates to a winch cage paying-off device and method for production of a transformer transposed conductor, and belongs to the technical field of transformers.
Background
The transposed conductor is mainly used for manufacturing windings of large-scale oil immersed power transformers, reactors and large-capacity dry transformers. The transformer produced by the transposed conductor has the remarkable characteristics of less loss of a discrete field, small volume, large capacity, good thermal stability, high voltage withstand level and the like, and the transposed conductor also becomes a preferred material in the transformer manufacturing industry along with popularization and promotion of the high-voltage withstand level, high-power and high-capacity transformer. The transposed conductor is generally made by combining a plurality of electromagnetic wires together and cladding insulating materials outside the transposed conductor. During production, the twisting cage is used as a paying-off device of a single wire to synchronously rotate, and the transposition head is used for beating the transposition braid combination and then is coated with insulating paper and the like to finish the production process of the transposition wire. At present, paying-off devices used in transposed conductor production lines are integrated into a twisting cage, a plurality of large twisting cage discs are rigidly connected together through a central main shaft and a plurality of auxiliary pull rod shafts, a pair of riding wheels are arranged below each large disc, the twisting cage is integrally supported by a plurality of groups of riding wheels, and when the integrated twisting cage is used, the integrated twisting cage rotates on the riding wheels under the driving of a motor. When the integral type twisting cage is used for producing fewer transposed conductors, the twisting cage equipment still needs to integrally operate, idle equipment idles to increase the invalid abrasion of the equipment, and meanwhile, energy waste is caused. On the other hand, the concentricity requirement of each large disc is higher when the integral type winch cage runs, and the manufacturing and maintenance cost is higher.
Disclosure of Invention
The invention aims to provide a winch cage paying-off device and method for producing a transformer transposed conductor, which adopt a segmented paying-off mechanism to reduce forced back-twist alignment mechanisms such as chain wheels, chains and gears, and can start paying-off in segments when few transposed conductors are produced, flexibly determine the number of started paying-off units according to the number of electromagnetic wires in actual production, improve the overall stability of the paying-off device, reduce the failure rate of equipment, and are flexible and convenient to use, thereby solving the technical problems existing in the prior art.
The technical scheme of the invention is as follows:
a winch cage paying-off device for producing a transformer transposed conductor is formed by combining more than two paying-off units with the same structure, all paying-off units share a transposition head, the transposition head is positioned behind the last paying-off unit, all paying-off unit spindles and transposition heads are positioned on the same axis, and each paying-off unit is driven by an independent driving system; the paying-off unit comprises a large winch cage disc, a main shaft, a winch cage riding wheel, a pull rod shaft and a cradle paying-off frame, wherein two large winch cage discs which are parallel to each other are arranged on the main shaft, the large winch cage discs are perpendicular to the main shaft, the two large winch cage discs are connected through a plurality of pull rod shafts, and the two large winch cage discs are connected into a whole cage frame through the main shaft and the plurality of pull rod shafts; the bottom of each big winch cage tray is provided with a winch cage supporting wheel which supports the big winch cage tray, and two cradle pay-off frames with the same structure are arranged on each big winch cage tray; cradle pay-off rack contains cradle support, movable center, cradle back shaft, fixed center, counter weight branch, balancing weight, enamelled spool and support bearing, cradle support is U type structure, set up movable center and fixed center on two support arms of U type structure respectively, movable center and fixed center are with enamelled spool's both ends centre gripping, enamelled spool is around movable center and fixed center free rotation in U type structure, the bottom outside of U type structure is equipped with cradle back shaft, cradle back shaft and support bearing match, install cradle pay-off rack on hank cage big dish, cradle support passes through cradle back shaft and hank cage big dish vertical arrangement, cradle support is around cradle back shaft free rotation on hank cage big dish, balancing weight is connected through decurrent counter weight branch to two support arm tops of U type structure respectively, counter weight branch and support vertical arrangement, counter weight branch and hank cage big dish are parallel.
The independent driving system comprises a synchronous belt and a gear motor, a main shaft is connected with the gear motor through the synchronous belt, and the gear motor drives the main shaft to drive the big winch cage disc to rotate on the winch cage riding wheel.
The winch cage supporting wheels are arranged in pairs, and a winch cage large disc is supported; the winch cage riding wheel is provided with an up-down adjusting mechanism and a front-back adjusting mechanism, the positions of the winch cage large discs are adjusted, and the main shafts and the transposition heads of all paying-off units are ensured to be positioned on the same axis. The up-down adjusting mechanism and the front-rear adjusting mechanism are common displacement adjusting mechanisms known in the art, such as a screw structure and the like.
And a cradle brake disc is arranged between the fixed center and the enamelled wire shaft and used for increasing the rotating friction force of the enamelled wire shaft so that the electromagnetic wire keeps tension.
And after the movable center moves, the enamelled wire shaft can be installed or removed, and the electromagnetic wire on the enamelled wire shaft is paid out through the large-disc rotation of the winch.
Cradle pay-off rack passes through the support bearing to be installed on the big dish of hank cage, and cradle pay-off rack is gravity back-torsion structure, relies on the automatic horizontal alignment of dead weight to guarantee to keep single electromagnetic wire's wide face up and do not take place to twist reverse all the time in the unwrapping wire in-process.
A strand cage paying-off method for producing a transformer transposed conductor adopts the paying-off device to pay off, and comprises the following steps:
when the transposed conductor is produced, an enameled wire shaft with an electromagnetic wire is arranged between a movable center and a fixed center, the electromagnetic wire is continuously paid off through the rotation of a large winch cage disc, and two cradle pay-off frames on one large winch cage disc are respectively provided with respective enameled wire shafts; according to the number of electromagnetic wires for producing the transposed conductor, starting corresponding number of paying-off units to synchronously rotate, and not starting the rest paying-off units; the cradle pay-off rack always keeps a horizontal pay-off state by self weight, a plurality of electromagnetic wires are put off, are woven together after being subjected to wire arrangement through a transposition head and being manufactured, and are wrapped with insulating materials, so that production of transposed conductors is realized; the cradle pay-off rack is automatically and horizontally aligned by means of dead weight and the balancing weight, so that the wide face of a single electromagnetic wire is always kept upwards in the paying-off process, and the cradle pay-off rack is not twisted.
The beneficial effects of the invention are as follows: when transposed conductors with fewer electromagnetic wires are produced, the corresponding number of paying-off units are started according to production requirements, so that invalid wear of equipment is reduced, the failure rate of the equipment is effectively reduced, and the maintenance cost is reduced; on the other hand, the energy can be saved, and unnecessary energy waste is reduced. The sectional paying-off stranding cage is adopted, so that forced back-twist alignment mechanisms such as chain wheels, chains and gears are reduced, the equipment failure rate is reduced, and the use is flexible and convenient.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a cradle in the form of a wringer cradle according to an embodiment of the present invention (with the enamelled spool removed);
FIG. 3 is a schematic top view of a cradle of the present invention;
in the figure: the cradle comprises a gear motor 1, a synchronous belt 2, a large winch drum 3, a main shaft 4, a winch riding wheel 5, a pull rod shaft 6, a cradle pay-off rack 7, a shifting head 8, a cradle bracket 9, a movable center 10, a cradle supporting shaft 11, a cradle brake disc 12, a fixed center 13, a balancing weight 14, an enamelled wire spool 15, a supporting bearing 16, a second gear motor 17, a second winch drum 19, a second main shaft 18, a second pull rod shaft 20, a second cradle pay-off rack 21, a second winch riding wheel 22 and a balancing weight supporting rod 23.
Detailed Description
The invention will now be further illustrated by way of example with reference to the accompanying drawings.
A winch cage paying-off device for producing a transformer transposed conductor is formed by combining more than two paying-off units with the same structure, all paying-off units share one transposition head 8, the transposition head 8 is positioned behind the last paying-off unit, all paying-off unit spindles and the transposition head 8 are positioned on the same axis, and each paying-off unit is driven by an independent driving system; the paying-off unit comprises a large winch cage disc 3, a main shaft 4, a winch cage riding wheel 5, a pull rod shaft 6 and a cradle paying-off frame 7, wherein two winch cage large discs 3 which are parallel to each other are arranged on the main shaft 4, the large winch cage discs 3 are perpendicular to the main shaft 4, the two large winch cage discs 3 are connected through a plurality of pull rod shafts 6, and the two large winch cage discs 3 are connected into a cage type frame body through the main shaft 4 and the plurality of pull rod shafts 6; the bottom of each big winch cage disc 3 is provided with a winch cage supporting wheel 5, the winch cage supporting wheels 5 support the big winch cage discs 3, and two cradle pay-off frames 7 with the same structure are arranged on each big winch cage disc 3; cradle pay-off rack 7 contains cradle support 9, movable center 10, cradle back shaft 11, fixed center 13, counter weight branch 23, balancing weight 14, enamelled spool 15 and support bearing 16, cradle support 9 is U type structure, set up movable center 10 and fixed center 13 respectively on two support arms of U type structure, movable center 10 and fixed center 13 are with enamelled spool 15's both ends centre gripping, enamelled spool 15 freely rotates in U type structure around movable center 10 and fixed center 13, the bottom outside of U type structure is equipped with cradle back shaft 11, cradle back shaft 11 matches with support bearing 16, install cradle pay-off rack 7 on hank cage large dish 3, cradle support 9 is arranged through cradle back shaft 11 and hank cage large dish 3 vertically, cradle support 9 freely rotates on hank cage large dish 3 around cradle back shaft 11, two support arm tops of U type structure connect balancing weight 14 through decurrent counter weight branch 23 respectively, counter weight branch 23 is arranged with support 9 vertically, counter weight branch 23 is parallel with hank cage large dish 3.
The independent driving system comprises a synchronous belt 2 and a gear motor 1, a main shaft 4 is connected with the gear motor 1 through the synchronous belt 2, and the gear motor 1 drives the main shaft 4 to drive the big winch cage disc 3 to rotate on the winch cage riding wheel 5.
The stranding cage riding wheels 5 are arranged in pairs, and support one stranding cage big disc 3; the winch cage riding wheel 5 is provided with an up-down adjusting mechanism and a front-back adjusting mechanism, the positions of the winch cage large discs 3 are adjusted, and the main shafts of all paying-off units and the transposition heads 8 are located on the same axis. The up-down adjusting mechanism and the front-rear adjusting mechanism are common displacement adjusting mechanisms known in the art, such as a screw structure and the like.
A cradle brake disc 12 is arranged between the fixed center 13 and the enamelled wire shaft 15 and is used for increasing the rotating friction force of the enamelled wire shaft 15 so that the electromagnetic wire keeps tension.
The movable center 10 can be used for installing or removing the enamelled wire shaft 15 after moving, and electromagnetic wires on the enamelled wire shaft 15 are paid out through the rotation of the large winch 3.
Cradle pay-off rack 7 is installed on hank cage large tray 3 through supporting bearing 16, and cradle pay-off rack 7 is gravity back-torsion structure, relies on the automatic level alignment of dead weight to guarantee to keep single electromagnetic wire's wide face up and do not take place to twist reverse all the time in the unwrapping wire in-process.
A strand cage paying-off method for producing a transformer transposed conductor adopts the paying-off device to pay off, and comprises the following steps:
when a transposed conductor is produced, an enamelled wire shaft 15 with an electromagnetic wire is arranged between a movable center 10 and a fixed center 13, the electromagnetic wire is continuously paid off through rotation of a large winch cage disc 3, and two cradle pay-off frames on the large winch cage disc 3 are respectively provided with the enamelled wire shafts; according to the number of electromagnetic wires for producing the transposed conductor, starting corresponding number of paying-off units to synchronously rotate, and not starting the rest paying-off units; the cradle pay-off rack always keeps a horizontal pay-off state by self weight, a plurality of electromagnetic wires are put off, are woven together after being subjected to wire arrangement and beating through the transposition head 8, and are wrapped with insulating materials, so that production of transposed conductors is realized; the cradle pay-off rack 7 is automatically and horizontally aligned by self weight and the balancing weight 14, so that the wide face of a single electromagnetic wire is always kept upwards and torsion is avoided in the pay-off process.
In the embodiment, referring to fig. 1, a paying-off device formed by combining two paying-off units with the same structure is a paying-off unit I and a paying-off unit II, the two paying-off units share a transposition head 8, the transposition head 8 is positioned behind the paying-off unit II, two paying-off unit spindles and the transposition head 8 are positioned on the same axis, and each paying-off unit is driven by an independent driving system; the paying-off unit I comprises a gear motor 1, a synchronous belt 2, a large winch cage disc 3, a main shaft 4, a supporting roller 5, a pull rod shaft 6 and a cradle paying-off frame 7, and the paying-off unit II comprises a gear motor II 17, a large winch cage disc II 19, a main shaft II 18, a pull rod shaft II 20, a cradle paying-off frame II 21 and a supporting roller II 22.
In the embodiment, the number of electromagnetic wires for producing the transposed conductor is four, enamelled bobbins are arranged on the four cradle pay-off frames 7 of the two large winch drums 3 of the pay-off unit I, only the reducing motor 1 of the pay-off unit I is required to drive the two large winch drums 3 of the pay-off unit I to rotate, the reducing motor 17 of the pay-off unit II is not required to be started, and energy conservation and consumption reduction are achieved. If six electromagnetic wires for producing the transposed conductor are provided, the paying-off unit I and the paying-off unit II are started at the same time. The cradle pay-off rack is automatically and horizontally aligned by means of dead weight and the balancing weight, so that the wide face of a single electromagnetic wire is always kept upwards in the paying-off process, and the cradle pay-off rack is not twisted.
Claims (5)
1. A hank cage pay-off for transformer transposed conductor production, its characterized in that: the paying-off device is formed by combining more than two paying-off units with the same structure, all paying-off units share one transposition head (8), the transposition head (8) is positioned behind the last paying-off unit, all paying-off unit spindles and the transposition head (8) are positioned on the same axis, and each paying-off unit is driven by an independent driving system; the paying-off unit comprises a large winch cage disc (3), a main shaft (4), a winch cage riding wheel (5), a pull rod shaft (6) and a cradle paying-off frame (7), wherein two winch cage large discs (3) which are parallel to each other are arranged on the main shaft (4), the large winch cage disc (3) is perpendicular to the main shaft (4), the two large winch cage discs (3) are connected through a plurality of pull rod shafts (6), and the two large winch cage discs (3) are connected into a whole cage frame through the main shaft (4) and the plurality of pull rod shafts (6); the bottom of each big stranding cage disc (3) is provided with a stranding cage supporting wheel (5), the stranding cage supporting wheels (5) support the big stranding cage discs (3), and two cradle pay-off frames (7) with the same structure are arranged on each big stranding cage disc (3); the cradle pay-off rack (7) comprises a cradle bracket (9), a movable center (10), a cradle supporting shaft (11), a fixed center (13), a counterweight supporting shaft (23), a balancing weight (14), an enamelling spool (15) and a supporting bearing (16), wherein the cradle bracket (9) is of a U-shaped structure, the movable center (10) and the fixed center (13) are respectively arranged on two support arms of the U-shaped structure, the movable center (10) and the fixed center (13) clamp the two ends of the enamelling spool (15), the enamelling spool (15) freely rotates in the U-shaped structure around the movable center (10) and the fixed center (13), the cradle supporting shaft (11) is arranged at the outer side of the bottom of the U-shaped structure, the cradle supporting shaft (11) is matched with the supporting bearing (16), the cradle pay-off rack (7) is arranged on the large cradle bracket (3) vertically, the cradle bracket (9) freely rotates on the large cradle bracket (3) around the supporting shaft (11), the two support arms of the U-shaped structure are respectively connected with the counterweight supporting shaft (23) vertically through the supporting shaft (23), the counterweight strut (23) is parallel to the big stranding cage disc (3).
2. The strand cage pay-off device for transformer transposed conductor production of claim 1, wherein: the independent driving system comprises a synchronous belt (2) and a gear motor (1), wherein a main shaft (4) is connected with the gear motor (1) through the synchronous belt (2), and the gear motor (1) drives the main shaft (4) to drive the big winch cage disc (3) to rotate on the winch cage riding wheel (5).
3. A lay wire paying-off device for transformer transposed conductor production as defined in claim 1 or 2, wherein: the stranding cage riding wheels (5) are arranged in pairs to support a stranding cage big disc (3); the winch cage riding wheel (5) is provided with an up-down adjusting mechanism and a front-back adjusting mechanism, the positions of the winch cage large discs (3) are adjusted, and the main shafts of all paying-off units and the transposition heads (8) are ensured to be positioned on the same axis.
4. A lay wire paying-off device for transformer transposed conductor production as defined in claim 1 or 2, wherein: a cradle brake disc (12) is arranged between the fixed center (13) and the enamelled wire shaft (15).
5. A method for paying out a twisted cage for the production of a transposed conductor of a transformer, using a paying out device as defined in any one of claims 1 to 4, characterized by comprising the steps of:
when a transposed conductor is produced, an enamelled wire shaft (15) with an electromagnetic wire is arranged between a movable center (10) and a fixed center (13), the electromagnetic wire is continuously paid off through rotation of a large winch cage disc (3), and two cradle pay-off frames on one large winch cage disc (3) are respectively provided with respective enamelled wire shafts; according to the number of electromagnetic wires for producing the transposed conductor, starting corresponding number of paying-off units to synchronously rotate, and not starting the rest paying-off units; the cradle pay-off rack always keeps a horizontal pay-off state by self weight, a plurality of electromagnetic wires are put off, are woven together after being subjected to wire arrangement and beating through a transposition head (8), and are wrapped with insulating materials, so that production of transposed conductors is realized; the cradle pay-off rack (7) is automatically and horizontally aligned by self weight and the balancing weight (14) so as to ensure that the wide surface of a single electromagnetic wire is always kept upwards and is not twisted in the pay-off process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111262224.6A CN114038625B (en) | 2021-10-28 | 2021-10-28 | Winch cage paying-off device and method for production of transformer transposed conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111262224.6A CN114038625B (en) | 2021-10-28 | 2021-10-28 | Winch cage paying-off device and method for production of transformer transposed conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114038625A CN114038625A (en) | 2022-02-11 |
| CN114038625B true CN114038625B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111262224.6A Active CN114038625B (en) | 2021-10-28 | 2021-10-28 | Winch cage paying-off device and method for production of transformer transposed conductor |
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| Country | Link |
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| CN (1) | CN114038625B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2609132Y (en) * | 2003-04-24 | 2004-03-31 | 上海科辰线缆设备技术合作公司 | Vertical twin disk back twist wire paging out machine |
| JP2012132122A (en) * | 2010-12-22 | 2012-07-12 | Hci Co Ltd | Tubular-type wire twisting machine with magnetic bearing |
| CN103213875A (en) * | 2013-03-28 | 2013-07-24 | 东莞市庆丰电工机械有限公司 | Full-automatic tension cage stranded wire cable crane |
| CN105047313A (en) * | 2015-06-29 | 2015-11-11 | 无锡锡洲电磁线有限公司 | Pay-off structure of combined transposed conductor |
-
2021
- 2021-10-28 CN CN202111262224.6A patent/CN114038625B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2609132Y (en) * | 2003-04-24 | 2004-03-31 | 上海科辰线缆设备技术合作公司 | Vertical twin disk back twist wire paging out machine |
| JP2012132122A (en) * | 2010-12-22 | 2012-07-12 | Hci Co Ltd | Tubular-type wire twisting machine with magnetic bearing |
| CN103213875A (en) * | 2013-03-28 | 2013-07-24 | 东莞市庆丰电工机械有限公司 | Full-automatic tension cage stranded wire cable crane |
| CN105047313A (en) * | 2015-06-29 | 2015-11-11 | 无锡锡洲电磁线有限公司 | Pay-off structure of combined transposed conductor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114038625A (en) | 2022-02-11 |
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