CN113137241B - Locking type cutter head main shaft connecting structure of pipe-jacking tunneling machine - Google Patents
Locking type cutter head main shaft connecting structure of pipe-jacking tunneling machine Download PDFInfo
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- CN113137241B CN113137241B CN202110545720.6A CN202110545720A CN113137241B CN 113137241 B CN113137241 B CN 113137241B CN 202110545720 A CN202110545720 A CN 202110545720A CN 113137241 B CN113137241 B CN 113137241B
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- main shaft
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- sleeve
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- 230000005641 tunneling Effects 0.000 title abstract description 13
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/04—Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for
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- Environmental & Geological Engineering (AREA)
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- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
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Abstract
The invention discloses a locking type cutter head spindle connecting structure of a pipe-jacking tunneling machine, which comprises a cutter head sleeve, wherein the cutter head sleeve is a sleeve with grooves arranged inside, the inner hole wall of the cutter head sleeve is uniformly provided with axial through grooves and fan-shaped ring grooves with the same number, and a cutter head is coupled on the cutter head sleeve; the front end of the main shaft is provided with a plurality of tenons, a groove is formed between every two adjacent tenons, and the number of the tenons and the grooves is consistent with that of the axial through grooves and the fan-shaped ring grooves in the cutter head sleeve; the main shaft and the cutter head sleeve are locked and fixed through a connecting lock structure, and the design that axial limiting is realized by means of bolts in a connecting structure of the cutter head and the power main shaft of the existing pipe-jacking tunneling machine is abandoned; the self-locking design of a connection structure of a locking type cutter head and a power main shaft and the design of a limiting cutter head sleeve of a main shaft of the connection structure of the cutter head and the power main shaft are adopted; the problem of connection instability caused by bolt deformation failure and even breakage due to severe impact load is solved.
Description
Technical Field
The invention belongs to the technical field of pipe push benches, and particularly relates to a locking type cutter head main shaft connecting structure of a pipe push heading machine.
Background
As shown in fig. 1 to 3, the cutter head connecting structure of the conventional pipe-jacking tunneling machine comprises a cutter head 10, a housing 20, a power box 30, a cutter head sleeve 40, a power spindle 50, a cover plate 60 and a bolt set 70. The cutter head 10 is fixedly connected with the cutter head sleeve 40; the cutter head sleeve 40 is connected with the power main shaft 50 in a key mode; the cover plate 60 is bolted with the power main shaft 50 through a bolt group 70; a bearing is arranged in the power box 30 to support the power main shaft 50; the power box 30 is fixedly connected with the shell 20; a gap is arranged between the supporting spokes at the rear part of the cutter head 10 and the inner conical surface of the barrel at the front part of the shell 20 so as to form a secondary crushing mechanism. During operation, the power box 30 drives the power main shaft 50 to rotate, the power main shaft 50 transmits power to the cutter head sleeve 40 through keys, and the cutter head sleeve 40 drives the cutter head 10 to realize rotary crushing. The cover plate 60 prevents the cutter head housing 40 from falling off the power spindle 50 by the bolt set 70.
In the cutter head connecting structure of the existing pipe-jacking tunneling machine, the axial displacement of the cutter head sleeve 40 is limited by fastening the cover plate 60 between the cutter head system and the power system by the bolt group 70. Under static load, the thread pair meets the self-locking condition and can not loosen. But transported in the apparatusDuring rotation, the interaction between the front disc surface of the cutter head 10 and the irregular stratum section and the interaction between the pebbles entering the secondary crushing mechanism and the supporting spokes at the rear part of the cutter head 10 can make the cutter head 10 bear a large amount of variable load. Taking the action of the pebbles entering the secondary crushing mechanism on the cutterhead 10 as an example, the acting force F of the pebbles on the cutterhead 10 can be decomposed into a radial (i.e. vertical) force F along the power main shaft 50 1 And a force f in the axial direction (i.e., horizontal direction) of the power main shaft 50 2 . Wherein the force f 2 Acting equivalently on the bolts in the bolt group 70, so that each bolt bears an axial force f in the screwing-out direction 2 . Under the action of variable load, vibration and impact, the friction factor of the thread pair is sharply reduced, the friction resistance of the thread pair can disappear instantly, the thread pair cannot meet the self-locking condition and slides slightly, and the bolt connection can be loosened after repeated times; when the bolt is subjected to severe impact load, the bolt thread is deformed and fails due to large axial tension, and even a bolt cylinder is directly broken.
Disclosure of Invention
The invention aims to provide a locking type cutter head main shaft connecting structure of a pipe-jacking tunneling machine, which solves the problem of cutter head connection instability caused by loosening and breaking of bolts in the existing cutter head connecting structure of the pipe-jacking tunneling machine.
In order to achieve the purpose, the invention provides the following technical scheme:
a locking type spindle connecting structure of a cutter head of a pipe-jacking tunneling machine comprises a cutter head sleeve, wherein the cutter head sleeve is a sleeve with grooves arranged inside, axial through grooves and fan-shaped ring grooves with the same number are uniformly arranged on the inner hole wall of the cutter head sleeve, and a cutter head is coupled on the cutter head sleeve;
the cutter head sleeve comprises a main shaft, wherein the front end of the main shaft is provided with a plurality of tenons, a groove is formed between every two adjacent tenons, and the number of the tenons and the grooves is consistent with the number of axial through grooves and fan-shaped ring grooves in the cutter head sleeve;
the main shaft and the cutter head sleeve are locked and fixed through a connecting lock structure.
As a still further scheme of the invention: the connecting lock structure comprises a cushion block group and a wedge block group, the cushion block group is a fan-shaped cylinder, the two sides of the cushion block group are rectangular side faces, the wedge block group is an arc-shaped plate, and the bottom of the arc-shaped plate is provided with a rectangular boss;
the tenon at the front end of the main shaft is coupled in the fan-shaped annular groove in the cutter head sleeve, the cushion block group is also coupled in the fan-shaped annular groove in the cutter head sleeve, and the rectangular side surface on one side of the cushion block group is abutted against the side surface of the tenon;
the wedge block group is coupled in an axial through groove in the inner portion of the cutter head sleeve, a rectangular boss of the wedge block group is coupled in a groove of the main shaft, and a rectangular side face of the other side of the cushion block group is abutted to a side face of the rectangular boss.
As a still further scheme of the invention: the cutter head cover further comprises a cover plate, and the cover plate is fastened on the front end face of the cutter head sleeve through a bolt group.
As a still further scheme of the invention: and a plurality of threaded holes for screwing bolts in are formed in the front end surface of the cutter head sleeve in an annular array.
As a still further scheme of the invention: and a circular boss is fixedly arranged on the back surface of the cover plate, and the side surface of the circular boss is abutted against the end surface of the wedge block group.
As a still further scheme of the invention: the rectangular side surfaces at the two sides of the cushion block group are matched with the tenon side surface and the convex side surface of the wedge block group.
Compared with the prior art, the invention has the beneficial effects that: the locking type connecting structure of the cutter head and the power main shaft of the pipe-jacking tunneling machine provides a novel connecting structure of the cutter head and the power main shaft, and abandons the design of realizing axial limit by bolts in the connecting structure of the cutter head and the power main shaft of the existing pipe-jacking tunneling machine; a locking type cutter head and power main shaft connecting structure self-locking design and a main shaft limiting cutter head sleeve design of the cutter head and power main shaft connecting structure are adopted; the problem of connection instability caused by bolt deformation failure and even breakage due to severe impact load is solved.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a cutter head connection structure of a pipe-jacking tunneling machine in the prior art.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of fig. 1 at B.
Fig. 4 is a schematic structural diagram of a perspective view of the present invention.
Fig. 5 is a schematic structural view of an explosion diagram in the present invention.
Fig. 6 is a schematic structural diagram of a cutter head sleeve in the invention.
FIG. 7 isbase:Sub>A schematic view ofbase:Sub>A half-section A-A ofbase:Sub>A cutter head sleeve according to the invention.
FIG. 8 is a schematic view of a half-section structure B-B of the cutter head sleeve in the invention.
Fig. 9 is a schematic structural view of the end face of the main shaft in the present invention.
Fig. 10 is a perspective view of the main shaft of the present invention.
Fig. 11 is a schematic structural view of the cover plate of the present invention.
FIG. 12 is a schematic view of the structure of the cushion set of the present invention.
FIG. 13 is a schematic diagram of the wedge set structure of the present invention.
Fig. 14 is a schematic structural view of the connecting and locking structure of the present invention.
In the figure: 1. a cutter head; 2. a cover plate; 21. a circular boss; 3. a bolt group; 4. a cutter head sleeve; 41. an axial through slot; 42. a fan-shaped ring groove; 5. a main shaft; 51. a tenon; 52. a groove; 6. a cushion block group; 61. a rectangular side; 7. a wedge block set; 71. and a rectangular boss.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 4-14, in an embodiment of the present invention, a locking type spindle connection structure for a cutter head of a push pipe tunneling machine includes a cutter head sleeve 4, where the cutter head sleeve 4 is a sleeve with grooves formed therein, an inner hole wall of the cutter head sleeve 4 is uniformly provided with an equal number of axial through grooves 41 and sector-shaped ring grooves 42, and the cutter head sleeve 4 is coupled with a cutter head 1, that is, the cutter head 1 is fixedly connected to the cutter head sleeve 4 through a rear support spoke;
the main shaft 5, the front end of main shaft 5 is provided with a plurality of tenons 51, has seted up recess 52 between two adjacent tenons 51, the quantity of tenon 51 and recess 52 is unanimous with the quantity that the groove 41 and the fan-shaped annular 42 are led to the axial of blade disc cover 4 inside, it is fixed to lock through connecting the keying structure between main shaft 5 and the blade disc cover 4.
That is, when the connecting structure works, the tenon 51 at the front end of the main shaft 5 enters the cutter head sleeve 4 from the rear end of the cutter head sleeve 4 along the axial through groove 41 in the cutter head sleeve 4, after the axial displacement is a certain distance, the tenon 51 of the main shaft 5 rotates to enter the fan-shaped ring groove 42 in the cutter head sleeve 4, after the side surface of the tenon 51 contacts with the side surface of the fan-shaped ring groove 42, the main shaft 5 stops moving, and the main shaft 5 limits the axial displacement capacity of the cutter head sleeve 4 through the matching relation between the tenon 51 and the fan-shaped ring groove 42.
Referring to fig. 5-10 and 12-14, the connecting lock structure includes a cushion block set 6 and a wedge block set 7, the cushion block set 6 is a sector cylinder, two sides of the cushion block set are rectangular side surfaces 61, the wedge block set 7 is an arc-shaped plate, and a rectangular boss 71 is arranged at the bottom of the arc-shaped plate;
the tenon 51 at the front end of the main shaft 5 is coupled in the fan-shaped ring groove 42 in the cutter head sleeve 4, the cushion block group 6 is also coupled in the fan-shaped ring groove 42 in the cutter head sleeve 4, and the rectangular side 61 on one side of the cushion block group 6 is abutted against the side of the tenon 51;
the wedge block group 7 is coupled in the axial through groove 41 in the cutter head sleeve 4, the rectangular boss 71 of the wedge block group 7 is coupled in the groove 52 of the main shaft 5, and the rectangular side surface 61 on the other side of the cushion block group 6 is abutted against the side surface of the rectangular boss 71.
When the tool is used, the connecting and locking structure is matched with grooves in the cutter head sleeve 4 through a plurality of groups of locking structures, so that the locking purpose is achieved, namely, the cushion blocks of the cushion block group 6 enter the cutter head sleeve 4 from the front end of the cutter head sleeve 4 along the axial through groove 41 in the cutter head sleeve 4, after the cushion blocks move for a certain distance in the axial direction, the cushion blocks of the cushion block group 6 rotate to enter the fan-shaped ring grooves 42 in the cutter head sleeve 4, after the rectangular side surfaces 61 of the cushion blocks of the cushion block group 6 are contacted with the other side surfaces of the tenons 51 of the main shaft 5, the cushion blocks of the cushion block group 6 stop moving, and the cushion blocks of the cushion block group 6 mainly play a role of filling gaps in the fan-shaped ring grooves 42;
the wedge blocks of the wedge block group 7 enter the cutter head sleeve 4 from the front end of the cutter head sleeve 4 along the axial through groove 41 in the cutter head sleeve 4, when the front end face and the rear end face of the wedge block group 7 are flush with the front end face and the rear end face of the cutter head sleeve 4, the wedge blocks of the wedge block group 7 stop moving, at the moment, the rectangular lug bosses 71 at the bottom of the wedge blocks of the wedge block group 7 are also matched with the grooves 52 at the front end of the main shaft 5, the wedge blocks of the cushion block group 6 and the tenons 51 of the main shaft 5 rotate along the fan-shaped ring grooves 42 of the cutter head sleeve 4, the main shaft 5 is locked, the axial through groove 41 in the cutter head sleeve 4 and the main shaft 5 limit the wedge blocks of the wedge block group 7 to only move axially, and the matching of the grooves 52 of the main shaft 5 and the rectangular lug bosses 71 at the bottom of the wedge blocks of the wedge block group 7 limits the displacement capability of the wedge blocks 7 backwards along the axial direction.
Referring to fig. 1-3 and fig. 11, the cutting tool further includes a cover plate 2, the cover plate 2 is fastened on the front end face of the cutter head sleeve 4 through a bolt group 3, a plurality of threaded holes for screwing bolts are formed in the front end face of the cutter head sleeve 4 in an annular array, a circular boss 21 is fixedly arranged on the back face of the cover plate 2, and the side face of the circular boss 21 abuts against the end face of the wedge group 7.
When the tool is used, the cover plate 2 is fastened on the front end face of the cutter head sleeve 4 through the bolt group 3, the matching relation of the circular boss 21 of the cover plate 2 and the wedge blocks of the wedge block group 7 limits the forward displacement capacity of the wedge blocks of the wedge block group 7 along the axial direction, the wedge blocks of the wedge block group 7 are locked, and therefore the whole connecting structure achieves the locking purpose.
The rectangular side surfaces 61 at the two sides of the cushion block group 6 are matched with the side surface of the tenon 51 and the convex side surface of the wedge block group 7, so that the integral connecting structure is locked more compactly.
When the device works, the spindle 5 rotates to drive the cutter head sleeve 4 to rotate, the cutter head sleeve 4 is fixedly connected with the cutter head 1, the cutter head sleeve 4 rotates to drive the cutter head 1 to rotate, force borne by the cutter head 1 is transmitted to the cutter head sleeve 4, and the tenon 51 of the spindle 5 limits axial displacement of the cutter head sleeve 4, so that axial component force borne by the cutter head 1 is borne by the spindle 5, in addition, the cover plate 2 only needs to limit axial displacement of the wedge blocks of the wedge block group 7, and the wedge blocks of the wedge block group 7 hardly bear axial force, so that the axial force borne by the bolt of the bolt group 3 for fastening the cover plate 2 from the cover plate 2 is in the bearing capacity range of the bolt, and therefore, the problem of connection instability caused by bolt deformation failure and even fracture in the original structure is effectively solved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a push pipe entry driving machine cutterhead main shaft connection structure of locking formula which characterized in that:
the cutter head sleeve (4) is a sleeve with grooves arranged inside, axial through grooves (41) and fan-shaped ring grooves (42) with the same number are uniformly arranged on the inner hole wall of the cutter head sleeve (4), and a cutter head (1) is coupled to the outer part of the cutter head sleeve (4);
the cutter head sleeve comprises a main shaft (5), wherein a plurality of tenons (51) are arranged at the front end of the main shaft (5), a groove (52) is formed between every two adjacent tenons (51), and the number of the tenons (51) and the number of the grooves (52) are consistent with that of axial through grooves (41) and fan-shaped ring grooves (42) in the cutter head sleeve (4);
the main shaft (5) and the cutter head sleeve (4) are locked and fixed through a connecting lock structure;
the connecting lock structure comprises a cushion block group (6) and a wedge block group (7), wherein the cushion block group (6) is a fan-shaped cylinder, the two sides of the cushion block group are rectangular side faces (61), the wedge block group (7) is an arc-shaped plate, and a rectangular boss (71) is arranged on the arc surface of the inner side of the wedge block group;
the tenon (51) at the front end of the main shaft (5) is coupled in the fan-shaped annular groove (42) in the cutter head sleeve (4), the cushion block group (6) is also coupled in the fan-shaped annular groove (42) in the cutter head sleeve (4), and the rectangular side surface (61) on one side of the cushion block group (6) is abutted against the side surface of the tenon (51);
the wedge block group (7) is coupled in an axial through groove (41) in the cutter head sleeve (4), a rectangular boss (71) of the wedge block group (7) is coupled in a groove (52) of the main shaft (5), and a rectangular side face (61) on the other side of the cushion block group (6) is abutted to the side face of the rectangular boss (71).
2. The connection structure of the cutter head spindle of the lock type pipe jacking machine according to claim 1, further comprising a cover plate (2), wherein the cover plate (2) is fastened on the front end face of the cutter head sleeve (4) through a bolt group (3).
3. The connection structure of the cutter head spindle of the locked pipe jacking machine according to claim 2, wherein the front end surface of the cutter head sleeve (4) is provided with a plurality of threaded holes for screwing bolts in an annular array.
4. The connecting structure of the cutter head spindle of the lock type pipe jacking machine according to claim 2, wherein a circular boss (21) is fixedly arranged on the back surface of the cover plate (2), and the side surface of the circular boss (21) is abutted against the end surface of the wedge block set (7).
5. The connection structure of the cutter head spindle of the locking type pipe jacking machine according to claim 1, wherein the rectangular side surfaces (61) at both sides of the cushion block group (6) are matched with the side surfaces of the tenon (51) and the convex side surfaces of the wedge block group (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110545720.6A CN113137241B (en) | 2021-05-19 | 2021-05-19 | Locking type cutter head main shaft connecting structure of pipe-jacking tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110545720.6A CN113137241B (en) | 2021-05-19 | 2021-05-19 | Locking type cutter head main shaft connecting structure of pipe-jacking tunneling machine |
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| Publication Number | Publication Date |
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| CN113137241A CN113137241A (en) | 2021-07-20 |
| CN113137241B true CN113137241B (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110545720.6A Active CN113137241B (en) | 2021-05-19 | 2021-05-19 | Locking type cutter head main shaft connecting structure of pipe-jacking tunneling machine |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114352304B (en) * | 2022-01-12 | 2024-04-26 | 中国铁建重工集团股份有限公司 | Spherical cutter head |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328872A (en) * | 1999-05-24 | 2000-11-28 | Kawasaki Heavy Ind Ltd | Shield tunneling machine for shallow cross section tunnel |
| CN108979657A (en) * | 2018-08-10 | 2018-12-11 | 淮南中泰矿山装备制造有限公司 | Axis proof mechanism of water |
| CN110219601A (en) * | 2019-05-22 | 2019-09-10 | 长江大学 | A kind of oil drill rocker based on tenon structure design |
| CN210217742U (en) * | 2019-08-06 | 2020-03-31 | 杨健 | Telescopic cutter head of heading machine |
| CN210938273U (en) * | 2019-09-20 | 2020-07-07 | 山西风雷钻具有限公司 | Milling machine main shaft quick change coupler |
| CN111764921A (en) * | 2020-08-10 | 2020-10-13 | 中国铁建重工集团股份有限公司 | Sectional type heading machine cutter head driving structure |
-
2021
- 2021-05-19 CN CN202110545720.6A patent/CN113137241B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328872A (en) * | 1999-05-24 | 2000-11-28 | Kawasaki Heavy Ind Ltd | Shield tunneling machine for shallow cross section tunnel |
| CN108979657A (en) * | 2018-08-10 | 2018-12-11 | 淮南中泰矿山装备制造有限公司 | Axis proof mechanism of water |
| CN110219601A (en) * | 2019-05-22 | 2019-09-10 | 长江大学 | A kind of oil drill rocker based on tenon structure design |
| CN210217742U (en) * | 2019-08-06 | 2020-03-31 | 杨健 | Telescopic cutter head of heading machine |
| CN210938273U (en) * | 2019-09-20 | 2020-07-07 | 山西风雷钻具有限公司 | Milling machine main shaft quick change coupler |
| CN111764921A (en) * | 2020-08-10 | 2020-10-13 | 中国铁建重工集团股份有限公司 | Sectional type heading machine cutter head driving structure |
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| CN113137241A (en) | 2021-07-20 |
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