CN114277619A - Subway rail supports sleeper - Google Patents
Subway rail supports sleeper Download PDFInfo
- Publication number
- CN114277619A CN114277619A CN202111648585.4A CN202111648585A CN114277619A CN 114277619 A CN114277619 A CN 114277619A CN 202111648585 A CN202111648585 A CN 202111648585A CN 114277619 A CN114277619 A CN 114277619A
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- China
- Prior art keywords
- water tank
- water
- sleeper
- sleepers
- rail
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/30—Wind power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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- Electromagnetic Pumps, Or The Like (AREA)
Abstract
The invention discloses a subway rail supporting sleeper, which comprises a rail, sleepers, a water tank, a heat transfer belt, a wind driven generator and a fixer, wherein the sleepers are fixed on the ground through bolts, the sleepers are distributed on the ground at equal intervals, the rail is arranged on the sleepers, the rail is connected with the sleepers through the fixer, the water tank is arranged below the sleepers and adopts a buried design, a water pump is arranged in the water tank, the water pump is conveyed to a waiting room of a subway station through water, the water is filtered and sterilized and then is used for people to wash hands, the heat transfer belt is arranged at the lower part of the rail and enters the water tank, the wind driven generator is arranged on one side above the water tank and does not influence the operation of the subway, and the wind driven generator is connected with an illuminating lamp through a storage battery. The invention has reasonable design; the water in the water tank can recycle the heat generated by rail friction.
Description
Technical Field
The invention relates to a support sleeper for an underground railway.
Background
Subway receives people's more and more welcome as a swift trip mode, and the subway receives external influence less simultaneously, and the subway moves on the track, and the track needs to be fixed on the sleeper, and current track can be because of the friction production heat after the subway traveles, and the heat often scatters and disappears through the outside air and causes the waste of resource, and the sleeper adopts bolt fixed connection with the track more, and the track can take place to warp if fixed connection influences the deformation and can cause the track to damage for a long time under the condition of expend with heat and contract with cold.
Disclosure of Invention
The invention aims to provide a railway track support sleeper to solve the technical problem.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a subway track supports sleeper, includes track, sleeper, water tank, heat transfer area, aerogenerator, fixer, the sleeper distributes along subaerial along the subaerial bolt fastening subaerial, and the sleeper equidistance distributes, installs the track on the sleeper, and the track is connected with the sleeper through the fixer, the sleeper below is equipped with the water tank, and the water tank adopts buried formula design, installs the water pump in the water tank, and the water pump is carried to the waiting room of subway station through water, and water supplies the personnel to wash hands after filtering, disinfecting, and orbital lower part is equipped with the heat transfer area, and in the heat transfer area got into the water tank, aerogenerator was installed to top one side of water tank, and aerogenerator did not influence the operation of subway, and aerogenerator is connected with the light through the battery.
Preferably, the top of water tank is equipped with the case lid, and the case lid carries out pouring of running water in the top of water tank through the mounting screw, has seted up the hole that leaks on the case lid, and the hole department that leaks installs the grille net, and the hole that leaks is equipped with a plurality ofly, in the rainwater gets into the water tank through the hole that leaks, the below in the hole that leaks is equipped with the foam-rubber cushion, and the spring is installed to the lower part of foam-rubber cushion, and the guide bar is installed to one side of foam-rubber cushion, and the guide bar is connected with the bottom of water tank.
Preferably, the spongy cushion blocks the water leakage hole under the action of the spring, the spring is made of PVC materials, the box cover is provided with an integrally formed mounting seat, and the wind driven generator is connected with the mounting seat.
Preferably, one end of the heat transfer belt is connected with the bottom of the track, the other end of the heat transfer belt enters the inner bottom of the water tank, a corrugated belt is arranged on the heat transfer belt, and the heat transfer belt is made of copper materials.
Preferably, the mounting seat is in a circular truncated cone design, the mounting seat is provided with two insertion holes, a screw rod is arranged on one side of each insertion hole, the screw rod is in threaded connection with the sleeve, and the sleeve is connected with the mounting seat.
Preferably, the wind driven generator comprises a magnetic induction line cylinder, a rotating blade and an inserting column, the bottom of the magnetic induction line cylinder is provided with the integrally formed inserting column, the inserting column is connected with the inserting hole and fixed by a screw rod, a bearing is arranged above the magnetic induction line cylinder and connected with the rotating blade, the lower part of the rotating blade is provided with a coil, and the coil enters the magnetic induction line cylinder.
Preferably, the fixer includes deflector, slider, a sealed cylinder, initiative rack, gear, two-way rack, a rotation section of thick bamboo, depression bar, L type frame, the deflector is fixed on the sleeper, the spout has been seted up to the both sides of deflector, the slider is connected with the spout, the slider is connected with the piston rod, the piston rod is installed in a sealed cylinder, a sealed cylinder is connected with the stopper, the right side of slider is equipped with the initiative rack of screw installation, initiative rack and gear engagement, the gear is installed on the sleeper through the pivot, gear and two-way rack meshing, two-way rack and deflector sliding connection, two-way rack and a rotation section of thick bamboo meshing, a rotation section of thick bamboo lower part is equipped with threaded connection's depression bar, and the depression bar runs through L type frame and is connected with the track, L type frame utilizes the screw to install on the sleeper.
Preferably, the sealing cylinder is filled with nitrogen.
Compared with the prior art, the invention has the following advantages: the invention has reasonable design; the wind power generator can generate power by utilizing wind power after the subway passes through, and the power generation is utilized for illumination, so that resources are saved; the water energy heat transfer belt in the water tank recovers heat generated by rail friction, the recovered water energy can be utilized, meanwhile, the water leakage holes can collect and utilize rainwater, when no rainwater exists, the springs push the sponge cushion upwards to block the water leakage holes, so that sundries are prevented from entering the water tank, when rainwater exists, the sponge cushion absorbs water, gravity is increased to compress the springs, and the sponge cushion is separated from the water leakage holes so that rainwater enters the water tank; nitrogen gas in the sealed section of thick bamboo in the fixer is heated the thermal expansion, thereby make the piston rod outwards remove, the slider is the backward movement under the effect of piston rod, the initiative rack on the slider moves along with the slider, the initiative rack removes and makes the gear take place rotatoryly, the gear is rotatory thereby drive two-way rack and remove, two-way rack drives a rotation section of thick bamboo and rotates, thereby the depression bar moves the certain distance upward under the effect of a rotation section of thick bamboo and easily the track is heated the expansion, after the temperature reduction, nitrogen gas shrink piston rod removes to sealed section of thick bamboo, the slider moves along with the piston rod, initiative rack removes and then has realized two-way rack and remove, a rotation section of thick bamboo is rotatory under the effect of two-way rack, the depression bar moves down and fastens it with the track contact, the untimely condition of fastening appears in clearance grow after having avoided the track shrinkage.
Drawings
Fig. 1 is a schematic view of the subway rail support sleeper of the present invention.
Fig. 2 is an exploded view of the water tank of the subway rail support sleeper of the present invention.
Fig. 3 is a schematic view of a mounting seat of the subway rail support sleeper of the present invention.
Fig. 4 is a schematic view of a wind power generator of the subway rail support sleeper of the present invention.
Fig. 5 is a schematic view of the holder of the subway rail support tie of the present invention.
Detailed Description
The invention is explained in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1-5, a subway rail supporting sleeper comprises a rail 1, sleepers 2, a water tank 3, heat transfer belts 4, a wind driven generator 5 and a fixer 6, wherein the sleepers 2 are fixed on the ground through bolts, the sleepers 2 are distributed on the ground at equal intervals, the rail 1 is installed on the sleepers 2 and connected with the sleepers 2 through the fixer 6, the water tank 3 is arranged below the sleepers 2, the water tank 3 is designed to be buried, a water pump is installed in the water tank 3 and is conveyed to a waiting room of a subway station through water, the water after heat exchange can be conveyed to a power station by a pipeline for power generation, the water is filtered and sterilized for washing hands of people, the heat transfer belts 4 are arranged at the lower part of the rail 1, the heat transfer belts 4 enter the water tank 3, the wind driven generator 5 is installed at one side above the wind driven generator 3, and the wind driven generator 5 does not influence the operation of the subway, the wind driven generator 5 is connected with a lighting lamp through a storage battery, the top of a water tank 3 is provided with a tank cover 7, the tank cover 7 is installed above the water tank 3 through screws, running water is filled in the water tank 3, the tank cover 7 is provided with water leakage holes 8, a grid net is installed at the water leakage holes 8, a plurality of water leakage holes 8 are formed, rainwater enters the water tank 3 through the water leakage holes 8, a sponge cushion 10 is arranged below the water leakage holes 8, a spring 11 is installed at the lower part of the sponge cushion 10, a guide rod 12 is installed at one side of the sponge cushion 10, the guide rod 12 is connected with the bottom of the water tank 3, the sponge cushion 10 blocks the water leakage holes 8 under the action of the spring 11, the spring 11 is made of a PVC material, the tank cover 7 is provided with an integrally formed mounting seat 9, the wind driven generator 5 is connected with the mounting seat 9, one end of a heat transfer belt 4 is connected with the bottom of a rail 1, the other end of the heat transfer belt 4 enters the inner bottom of the water tank 3, the heat transfer belt 4 is provided with a corrugated belt 13, the heat transfer belt 4 is made of copper material, the mounting seat 9 is in a circular truncated cone design, the mounting seat 9 is provided with two insertion holes 14, one side of each insertion hole 14 is provided with a screw rod 15, the screw rods 15 are in threaded connection with sleeves, the sleeves are connected with the mounting seat 9, the wind driven generator 5 comprises a magnetic induction line cylinder 16, a rotating blade 17 and an insertion column 18, the bottom of the magnetic induction line cylinder 16 is provided with the integrally formed insertion column 18, the insertion column 18 is connected with the insertion holes 14 and fixed by the screw rods 15, a bearing is arranged above the magnetic induction line cylinder 16 to be connected with the rotating blade 17, the lower part of the rotating blade 17 is provided with a coil, the coil enters the magnetic induction line cylinder 16, the fixer 6 comprises a guide plate 18, a sliding block 19, a sealing cylinder 20, a driving rack 22, a gear 23, a bidirectional rack 24, a rotating cylinder 25, a pressure rod 26 and an L-shaped frame 27, the guide plate 18 is fixed on the sleeper 2, the two sides of the guide plate 18 are provided with sliding grooves 28, the sliding block 19 is connected with the sliding grooves 28, the sliding block 19 is connected with a piston rod, the piston rod is installed in a sealing cylinder 20, the sealing cylinder 20 is connected with a limiting block 21, the right side of the sliding block 19 is provided with a driving rack 22 installed by screws, the driving rack 22 is meshed with a gear 23, the gear 23 is installed on the sleeper 2 through a rotating shaft, the gear 23 is meshed with a bidirectional rack 24, the bidirectional rack 24 is connected with the guide plate 18 in a sliding mode, the bidirectional rack 24 is meshed with a rotating cylinder 25, the lower portion of the rotating cylinder 25 is provided with a pressure rod 26 connected with threads, the pressure rod 26 penetrates through an L-shaped frame 27 and is connected with the track 1, the L-shaped frame 27 is installed on the sleeper 2 by screws, and the sealing cylinder 20 is filled with nitrogen.
The working principle of the invention is as follows: when subway passes through quickly, a large wind-driven generator 5 can generate electricity by utilizing wind power generated after the subway passes through, the electricity is generated to illuminate, so that resources are saved, a water energy heat transfer belt 4 in a water tank 3 recovers heat generated by friction of a rail 1, the water energy of the recovered heat is utilized, meanwhile, rainwater can be collected and utilized by a water leakage hole 8, when no rainwater exists, a spring 11 pushes a sponge cushion 10 upwards to seal the water leakage hole 8, so that sundries are prevented from entering the water tank 3, when rainwater exists, the sponge cushion 10 absorbs water and increases gravity to compress the spring 11, the sponge cushion 10 moves downwards on a guide rod 12 to be separated from the water leakage hole 8, so that the rainwater enters the water tank 3, nitrogen in a sealing cylinder 20 in a fixer 6 expands under the action of heat, so that a piston rod moves outwards, a sliding block 19 moves backwards under the action of the piston rod, a driving rack 22 on the sliding block 19 moves along with the sliding block 19, the initiative rack 22 removes and makes gear 23 take place rotatoryly, thereby gear 23 is rotatory to drive two-way rack 24 and removes, two-way rack 24 drives and rotates a section of thick bamboo 25, thereby depression bar 26 moves the certain distance upward under the effect of a section of thick bamboo 25 and easily track 1 thermal expansion, after the temperature reduction, nitrogen gas shrink piston rod removes in sealed section of thick bamboo 20, slider 19 removes along with the piston rod, initiative rack 22 removes and then has realized two-way rack 24 and remove, it is rotatory under two-way rack 24's effect to rotate a section of thick bamboo 25, depression bar 26 moves down and fastens it with track 1 contact, the untimely condition of fastening appears in the clearance grow after having avoided track 1 shrinkage.
The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that variations, modifications, substitutions and alterations can be made in the embodiment without departing from the principles and spirit of the invention.
Claims (8)
1. A subway rail supporting sleeper comprises a rail (1), sleepers (2), a water tank (3), heat transfer belts (4), wind driven generators (5) and a fixer (6), and is characterized in that the sleepers (2) are fixed on the ground through bolts, the sleepers (2) are distributed on the ground along the ground, the sleepers (2) are distributed at equal intervals, the rail (1) is installed on the sleepers (2), the rail (1) is connected with the sleepers (2) through the fixer (6), the water tank (3) is arranged below the sleepers (2), the water tank (3) is designed in a buried mode, a water pump is installed in the water tank (3), the water pump is conveyed to a waiting room of a subway station through water, the water is filtered and sterilized for personnel, the heat transfer belts (4) are arranged on the lower portions of the rail (1), the heat transfer belts (4) enter the water tank (3), the wind driven generators (5) are installed on one side above the water tank (3), and the wind driven generator (5) does not influence the operation of the subway, and the wind driven generator (5) is connected with the illuminating lamp through the storage battery.
2. A subway rail supporting sleeper as claimed in claim 1, wherein said water tank (3) is provided at its top with a tank cover (7), said tank cover (7) is mounted above said water tank (3) by means of screws, said water tank (3) is filled with running water, said tank cover (7) is provided with a plurality of water leakage holes (8), said water leakage holes (8) are provided with a grid net, said water leakage holes (8) are provided with a plurality of grids, rainwater enters said water tank (3) through said water leakage holes (8), a sponge cushion (10) is provided under said water leakage holes (8), a spring (11) is provided at the lower part of said sponge cushion (10), a guide bar (12) is provided at one side of said sponge cushion (10), said guide bar (12) is connected to the bottom of said water tank (3).
3. A subway rail support sleeper as claimed in claim 2, characterized in that said foam-rubber cushion (10) blocks the water leakage holes (8) under the action of springs (11), the springs (11) are made of PVC material, the box cover (7) is provided with an integrally formed mounting seat (9), and the wind-driven generator (5) is connected with the mounting seat (9).
4. A subway rail support sleeper as claimed in claim 1, characterized in that said heat transfer belt (4) is connected at one end to the bottom of the rail (1) and at the other end to the inner bottom of the water tank (3), the heat transfer belt (4) being provided with a corrugated belt (13), the heat transfer belt (4) being made of copper.
5. The subway rail support sleeper as claimed in claim 3, wherein said mounting seat (9) is of a truncated cone design, said mounting seat (9) is provided with two insertion holes (14), one side of said insertion holes (14) is provided with a screw rod (15), said screw rod (15) is in threaded connection with a sleeve, said sleeve is connected with said mounting seat (9).
6. A subway rail support sleeper as claimed in claim 1 or 5, wherein said wind power generator (5) comprises a magnetic induction line cylinder (16), a rotary blade (17) and an insertion column (18), the bottom of the magnetic induction line cylinder (16) is provided with an integrally formed insertion column (18), the insertion column (18) is connected with the insertion hole (14) and fixed by a screw rod (15), a bearing is arranged above the magnetic induction line cylinder (16) to connect the rotary blade (17), the lower part of the rotary blade (17) is provided with a coil, and the coil enters the magnetic induction line cylinder (16).
7. The subway rail support sleeper as claimed in claim 1, wherein said anchor (6) comprises a guide plate (18), a slide block (19), a sealing cylinder (20), a driving rack (22), a gear (23), a bidirectional rack (24), a rotary cylinder (25), a pressure bar (26) and an L-shaped frame (27), said guide plate (18) is fixed on the sleeper (2), slide grooves (28) are opened on both sides of the guide plate (18), the slide block (19) is connected with the slide grooves (28), the slide block (19) is connected with a piston rod, the piston rod is installed in the sealing cylinder (20), the sealing cylinder (20) is connected with a limit block (21), the right side of the slide block (19) is provided with a driving rack (22) installed by screws, the driving rack (22) is engaged with the gear (23), the gear (23) is installed on the sleeper (2) through a rotating shaft, the gear (23) is engaged with the bidirectional rack (24), the bidirectional rack (24) is connected with the guide plate (18) in a sliding mode, the bidirectional rack (24) is meshed with the rotating cylinder (25), the lower portion of the rotating cylinder (25) is provided with a pressure lever (26) in threaded connection, the pressure lever (26) penetrates through the L-shaped frame (27) to be connected with the track (1), and the L-shaped frame (27) is installed on the sleeper (2) through screws.
8. A railway track support tie according to claim 7, wherein the sealing cartridge (20) is filled with nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111648585.4A CN114277619B (en) | 2021-12-31 | 2021-12-31 | Subway rail supports sleeper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111648585.4A CN114277619B (en) | 2021-12-31 | 2021-12-31 | Subway rail supports sleeper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114277619A true CN114277619A (en) | 2022-04-05 |
| CN114277619B CN114277619B (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111648585.4A Active CN114277619B (en) | 2021-12-31 | 2021-12-31 | Subway rail supports sleeper |
Country Status (1)
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| CN (1) | CN114277619B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19622119A1 (en) * | 1996-06-01 | 1997-12-04 | Rolf Hoericht | Wind power electricity generation 250 kW power plant e.g. for installing over roads or railways |
| JP2000001802A (en) * | 1998-06-15 | 2000-01-07 | Uemura Makoto | Execution method under track in hot season |
| DE102005003962A1 (en) * | 2005-01-27 | 2006-08-03 | Schreck-Mieves Gmbh | Rail system for an urban tramway etc., sunk into the ground, has an attachment box with a variety of functions buried to one side of the rail and decoupled from it as isolation from traffic vibrations |
| EP1995380A2 (en) * | 2007-05-25 | 2008-11-26 | Osvaldo Fasano | Device for collecting liquids along railway tracks |
| JP2009084880A (en) * | 2007-09-28 | 2009-04-23 | Nippon Sharyo Seizo Kaisha Ltd | Watertight structure of track rail |
| AT11028U1 (en) * | 2008-09-24 | 2010-03-15 | Thera S Di Kraus & Di Fh Maier | SOUND ABSORPTION ARRANGEMENT FOR SLABS |
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| KR101857066B1 (en) * | 2017-10-11 | 2018-05-11 | 삼표레일웨이 주식회사 | Precast Concrete Slab Track and Constructing Method thereof |
| CN209258987U (en) * | 2018-12-06 | 2019-08-16 | 长沙湘匠智能科技有限公司 | A kind of bidirectional driving apparatus |
| CN111235975A (en) * | 2020-01-14 | 2020-06-05 | 岑雨霏 | Automatic regulating device for thermal expansion and cold contraction of railway fastener |
| CN211112934U (en) * | 2019-09-04 | 2020-07-28 | 大秦铁路股份有限公司 | Antifouling mass flow processing apparatus of circuit |
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2021
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|---|---|---|---|---|
| DE19622119A1 (en) * | 1996-06-01 | 1997-12-04 | Rolf Hoericht | Wind power electricity generation 250 kW power plant e.g. for installing over roads or railways |
| JP2000001802A (en) * | 1998-06-15 | 2000-01-07 | Uemura Makoto | Execution method under track in hot season |
| DE102005003962A1 (en) * | 2005-01-27 | 2006-08-03 | Schreck-Mieves Gmbh | Rail system for an urban tramway etc., sunk into the ground, has an attachment box with a variety of functions buried to one side of the rail and decoupled from it as isolation from traffic vibrations |
| EP1995380A2 (en) * | 2007-05-25 | 2008-11-26 | Osvaldo Fasano | Device for collecting liquids along railway tracks |
| JP2009084880A (en) * | 2007-09-28 | 2009-04-23 | Nippon Sharyo Seizo Kaisha Ltd | Watertight structure of track rail |
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| CN202809406U (en) * | 2012-09-10 | 2013-03-20 | 武汉钢铁(集团)公司 | Steel rail fixing device |
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| CN211112934U (en) * | 2019-09-04 | 2020-07-28 | 大秦铁路股份有限公司 | Antifouling mass flow processing apparatus of circuit |
| CN111235975A (en) * | 2020-01-14 | 2020-06-05 | 岑雨霏 | Automatic regulating device for thermal expansion and cold contraction of railway fastener |
| CN212175350U (en) * | 2020-03-11 | 2020-12-18 | 杨国童 | Track fixing device |
| CN212742029U (en) * | 2020-05-25 | 2021-03-19 | 中铁隧道集团三处有限公司 | Mounting seat for subway rail |
| CN214301050U (en) * | 2021-01-22 | 2021-09-28 | 梁光浩 | Road and bridge roadbed protective structure |
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| Publication number | Publication date |
|---|---|
| CN114277619B (en) | 2023-06-23 |
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