CN114645522A - Apron is contained wall body and is had no pull rod construction die carrier - Google Patents
Apron is contained wall body and is had no pull rod construction die carrier Download PDFInfo
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- CN114645522A CN114645522A CN202210364984.6A CN202210364984A CN114645522A CN 114645522 A CN114645522 A CN 114645522A CN 202210364984 A CN202210364984 A CN 202210364984A CN 114645522 A CN114645522 A CN 114645522A
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- 238000009415 formwork Methods 0.000 claims abstract description 88
- 230000008093 supporting effect Effects 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 201000010099 disease Diseases 0.000 abstract description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 4
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
- E04G11/12—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring of elements and beams which are mounted during erection of the shuttering to brace or couple the elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/14—Bracing or strutting arrangements for formwalls; Devices for aligning forms
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewage (AREA)
Abstract
The invention belongs to the field of building construction, and particularly relates to a pull-rod-free construction formwork for a wall body of a cover plate culvert, which comprises an inner formwork and an outer formwork, wherein the inner formwork and the outer formwork are vertically arranged in parallel, an outer support frame is arranged on one side, far away from each other, of the outer formwork, a gravel layer is arranged on the lower side of the outer formwork, a foundation layer is arranged on the lower side of the inner formwork, a support block is fixedly connected to the middle of one side, close to each other, of the inner formwork, and the support block is of an isosceles trapezoid structure. According to the invention, the inner template and the outer template are not required to be supported and fixed by using the pull rod, and the supporting effect of the inner template and the outer template can be effectively ensured, so that the problem of roadbed diseases caused by water leakage of pull rod holes due to the use of the pull rod is avoided, and the appearance quality of concrete is improved; furthermore, the disassembly and assembly are convenient, the assembly and the transportation are convenient, the repeated use can be realized, the practicability is high, and the popularization and the use are convenient.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a tension-rod-free construction formwork for a cover plate culvert wall body.
Background
The cover plate culvert adopts an integral or separated foundation and a culvert body to be rigid, and the structural form that the cover plate is hinged with the culvert body is generally used as a water passing culvert or a pedestrian crossing. The cover plate culvert open cut operation is suitable for geology with lower underground water level and less permeable basement and pit wall after foundation pit excavation. The bearing capacity of the original substrate or the substrate after the manager meets the design requirements, and a certain construction operation site and material transportation conditions exist.
The main operation of the slab culvert construction comprises the following steps: foundation pit excavation, foundation and culvert body construction, steel bar processing and installation, cover plate prefabrication and hoisting, waterproof layer construction, culvert back backfilling, passageway paving construction and the like. Wherein the culvert body construction is used as a main supporting framework, and the safety and stability of the culvert body construction are related to the performance of the integral structure of the slab culvert. The traditional culvert body construction usually fixes and positions the outer formwork and the inner formwork through the pull rod, and the pull rod needs to be detached after the poured concrete is dried. Pull rod holes are left on the culvert body after the pull rod holes are disassembled, and water leakage can occur after the pull rod holes are put into use, so that roadbed diseases are caused; and the appearance quality of the concrete is also seriously influenced.
Therefore, the construction formwork without the pull rod for the cover plate culvert wall body is provided to solve the problems.
Disclosure of Invention
The invention aims to solve the problems and provides a construction formwork without tie rods for a cover plate culvert wall body, which can avoid roadbed diseases caused by water leakage of tie rod holes and influence the appearance quality of concrete.
In order to achieve the purpose, the invention adopts the following technical scheme: a pull rod-free construction formwork for a wall body of a slab culvert comprises an inner formwork and an outer formwork, wherein the inner formwork and the outer formwork are vertically arranged in parallel, an outer support frame is arranged on one side, away from each other, of the outer formwork, a gravel layer is arranged on the lower side of the outer formwork, a base layer is arranged on the lower side of the inner formwork, a support block is fixedly connected to the middle of one side, close to each other, of the inner formwork, the support block is of an isosceles trapezoid structure, a plurality of fastening screws which are arranged at equal intervals and used for connecting the inner formwork are in threaded connection with the upper side and the lower side of the support block, a plurality of first support pieces which are arranged at equal intervals are arranged on one side, close to each other, of the support blocks, a positioning plate is vertically arranged on the lower portion, close to each other, of the inner formwork, a plurality of positioning holes are arranged at equal intervals on the right side of the positioning plate, positioning rods penetrate through the positioning holes, and the lower ends of the positioning rods are fixedly connected with a mounting plate, the upside threaded connection of mounting panel has a plurality of mounting screws that set up with the locating lever interval, the electric putter that a plurality of equidistance of downside fixedly connected with of locating plate set up, electric putter's lower extreme output fixedly connected with synchronizing bar, a plurality of equidistance of downside fixedly connected with of synchronizing bar are provided with the removal wheel.
In foretell apron culvert wall body does not have pull rod construction die carrier, one side lower extreme that the exterior sheathing kept away from each other is provided with the mounting bar, the mounting bar sets up between the lower extreme of outer bracing frame and the exterior sheathing, the cross-section of mounting bar is L shape, one side threaded connection that the mounting bar is close to the exterior sheathing has fastening screw, the upside threaded connection that is close to the gravel layer of mounting bar has set screw.
In the pull-rod-free construction formwork for the wall body of the slab culvert, the length of the positioning screw is 20-30 cm, and the lower end of the positioning screw is inserted into the gravel layer.
In the above construction formwork without the pull rod for the wall body of the slab culvert, the upper part of one side, close to each other, of the inner formwork is provided with a plurality of second supporting pieces which are arranged in parallel, and the second supporting pieces are the same as the first supporting pieces in structure.
In foretell apron culvert wall body does not have pull rod construction die carrier, first support piece is including setting up the dwang on two inner formword intermediate positions, opposite direction's reverse screw thread is seted up to the inside left and right sides of dwang, the inside equal threaded connection in both ends has the mortgage pole about the dwang, the one end fixedly connected with non slipping spur that the mortgage pole was kept away from each other.
In foretell apron culvert wall body does not have pull rod construction die carrier, the non slipping spur is kept away from one side of mortgage pole and is contacted with the inner formword, one side that the non slipping spur is close to the inner formword is provided with a plurality of anti-skidding teeth, the anti-skidding tooth adopts the rubber material.
In foretell apron culvert wall body does not have pull rod construction die carrier, the solid fixed ring of the lateral middle part fixedly connected with of dwang, gu fixed ring's lateral symmetry is provided with the regulation handle.
In the above construction formwork without the pull rod for the cover plate culvert wall body, the upper end of the positioning rod is provided with a fillet.
Compared with the prior art, this apron culvert wall body does not have pull rod construction die carrier's advantage lies in:
when the concrete supporting device is used, the inner formwork and the outer formwork do not need to be supported and fixed by using the pull rods, and the supporting effect of the inner formwork and the outer formwork can be effectively ensured, so that the problem of roadbed diseases caused by water leakage of pull rod holes due to the use of the pull rods is avoided, and the appearance quality of concrete is improved; furthermore, the dismouting is convenient, and convenient to detach equipment and transportation can repetitious usage, and the practicality is strong, convenient to popularize and use.
Drawings
FIG. 1 is a schematic structural diagram of a tension-rod-free construction formwork for a cover plate culvert wall body provided by the invention;
FIG. 2 is a schematic view of a connection structure of an inner formwork of a pull-rod-free construction formwork for a cover plate culvert wall body provided by the invention;
FIG. 3 is a schematic structural diagram of an inner formwork of the pull-rod-free construction formwork for the wall body of the slab culvert, which is provided by the invention;
FIG. 4 is a schematic view of a connecting structure of an outer formwork and a mounting bar of the pull-rod-free construction formwork for the wall body of the cover plate culvert provided by the invention;
fig. 5 is a schematic structural view of a first supporting member of the tie-rod-free construction formwork for the slab culvert wall body provided by the invention.
In the figure, 1, an inner template; 2. an outer template; 3. an outer support frame; 4. a gravel layer; 5. a base layer; 6. a support block; 7. fastening screws; 8. a first support member; 9. positioning a plate; 10. positioning holes; 11. positioning a rod; 12. mounting a plate; 13. mounting screws; 14. an electric push rod; 15. a synchronization lever; 16. a moving wheel; 17. mounting a bar; 18. a set screw; 19. a second support member; 20. rotating the rod; 21. reverse threads; 22. a mortgage bar; 23. anti-skid blocks; 24. anti-slip teeth; 25. a fixing ring; 26. an adjusting handle.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
As shown in fig. 1-5, a construction formwork without a pull rod for a wall body of a slab culvert comprises an inner formwork 1 and an outer formwork 2, wherein the inner formwork 1 and the outer formwork 2 are vertically arranged in parallel, an outer support frame 3 is arranged on one side, away from each other, of the outer formwork 2, a gravel layer 4 is arranged on the lower side of the outer formwork 2, a line is marked at a position to be constructed, a rectangular foundation pit with the depth of 30-40 cm is excavated, gravel is laid in the foundation pit to form the gravel layer 4, a base layer 5 is arranged on the lower side of the inner formwork 1, concrete is poured through a formwork in the middle of the upper end of the gravel layer 4, the base layer 5 is formed after the concrete is dried, a support block 6 is fixedly connected to the middle of one side, close to each other, of the inner formwork 1, the support block 6 is in an isosceles trapezoid structure, a plurality of fastening screws 7 which are arranged at equal intervals and are connected to the upper side and the lower side and the upper side and the lower side of the support block 6 through threads, one side that the supporting shoe 6 is close to each other is provided with the first support piece 8 that a plurality of equidistance set up, provides the holding power through first support piece 8 to supporting shoe 6, simultaneously because supporting shoe 6 is isosceles trapezoid structure, can improve with the lifting surface area of inner formword 1.
The lower part of one side of the inner template 1, which is close to each other, is vertically provided with a positioning plate 9, the right side of the positioning plate 9 is provided with a plurality of positioning holes 10 with equal distance, positioning rods 11 penetrate through the positioning holes 10, the upper ends of the positioning rods 11 are provided with round corners, the lower ends of the positioning rods 11 are fixedly connected with a mounting plate 12, the upper side of the mounting plate 12 is in threaded connection with a plurality of mounting screws 13 which are arranged at intervals with the positioning rods 11, the mounting plate 12 is fixedly connected to the upper side of the base layer 5 through preformed holes and the mounting screws 13, the positioning rods 11 are kept to be vertically upwards arranged, the positioning holes 10 at corresponding positions are sleeved on the upper end ring side of the positioning rods 11, the inner template 1 is kept in a vertical state, when concrete is poured, the preformed holes for inserting the mounting screws 13 are preformed at corresponding positions of the base layer 5, the lower side of the positioning plate 9 is fixedly connected with a plurality of electric push rods 14 with equal distance, and the output ends of the lower ends of the electric push rods 14 are fixedly connected with synchronizing rods 15, the lower side of the synchronizing rod 15 is fixedly connected with a plurality of moving wheels 16 at equal intervals, when the inner template 1 is disassembled, the moving wheels 16 are controlled to move downwards through the electric push rod 14, the inner template 1 is lifted upwards by 3-4 cm, the positioning plate 9 and the positioning rod 11 are separated, and the inner template 1 is pulled out of the culvert body in a mode of pulling the inner template 1.
The lower end of one side of the outer formwork 2 which is far away from each other is provided with a mounting bar 17, the mounting bar 17 is arranged between the lower end of the outer support frame 3 and the outer formwork 2, the cross section of the mounting bar 17 is L-shaped, one side of the mounting bar 17 which is close to the outer formwork 2 is in threaded connection with a fastening screw 7, the outer support frames 3 are arranged on the left side and the right side of the foundation layer 5, the mounting bar 17 is fixedly arranged on the inner side of the outer support frame 3 through a positioning screw 18, the upper side of the mounting bar 17 which is close to the gravel layer 4 is in threaded connection with a positioning screw 18, the length of the positioning screw 18 is 20-30 cm, and the lower end of the positioning screw 18 is inserted into the gravel layer 4.
The upper part of one side of the inner formworks 1, which is close to each other, is provided with a plurality of second supporting pieces 19 in parallel, the second supporting pieces 19 and the first supporting pieces 8 have the same structure, each first supporting piece 8 comprises a rotating rod 20 arranged at the middle position of the two inner formworks 1, the left side and the right side of the rotating rod 20 are provided with reverse threads 21 in opposite directions, the left end and the right end of the rotating rod 20 are internally and uniformly in threaded connection with a mortgage rod 22, one ends, which are far away from each other, of the mortgage rods 22 are fixedly connected with antiskid blocks 23, one sides, which are far away from the mortgage rods 22, of the antiskid blocks 23 are in contact with the inner formworks 1, one sides, which are close to the inner formworks 1, of the antiskid blocks 23 are provided with a plurality of antiskid teeth 24, the antiskid teeth 24 are made of rubber materials, the middle parts of the ring sides of the rotating rods 20 are fixedly connected with fixing rings 25, the ring sides of the fixing rings 25 are symmetrically provided with adjusting handles 26, the rotating rods 20 are rotated through the adjusting handles 26 and the fixing rings 25, one ends of the mortgage rods 22 are manually fixed, due to the reverse thread 21, the first support 8 and the second support 19 can be controlled to extend, and the anti-slip teeth 24 made of rubber can keep the first support 8 and the second support 19 attached to the inner side of the inner formwork 1.
The specific working principle is as follows:
marking lines at positions needing to be constructed, excavating a rectangular foundation pit with the depth of 30-40 cm, paving the foundation pit by using gravel, pouring concrete in the middle of the upper end of a gravel layer 4 through a template, reserving reserved holes for inserting mounting screws 13 at corresponding positions, and drying the concrete to form a foundation layer 5; according to the design thickness of the culvert body, the outer support frames 3 are arranged on the left side and the right side of the foundation layer 5, the mounting bars 17 are fixedly mounted on the inner sides of the outer support frames 3 through the positioning screws 18, and the outer templates 2 are fixedly connected on the inner sides of the outer support frames 3 through the fastening screws 7.
Fixedly connecting an installation plate 12 to the upper side of the base layer 5 through a preformed hole and an installation screw 13, keeping the positioning rod 11 vertically upwards, sleeving a positioning hole 10 in a corresponding position on the upper end ring side of the positioning rod 11, and keeping the inner template 1 in a vertical state; the side, far away from each other, of each anti-skid block 23 is abutted against the inner side of the inner formwork 1, the rotating rod 20 is rotated through the adjusting handle 26 and the fixing ring 25, the mortgage rod 22 at one end is manually fixed, the first supporting piece 8 and the second supporting piece 19 can be controlled to extend under the action of the reverse threads 21, the anti-skid teeth 24 made of rubber can keep the first supporting piece 8 and the second supporting piece 19 attached to the inner side of the inner formwork 1, and the sealing formworks are installed at the front end and the rear end of the inner formwork 1 and the outer formwork 2;
pouring concrete between the fixed inner formwork 1 and the fixed outer formwork 2, and when pouring the concrete to the middle part of the inner formwork 1, keeping the stability of the inner formwork 1 by adjusting the length of the first supporting pieces 8, keeping the lengths of the plurality of first supporting pieces 8 the same, improving the supporting effect of the inner formwork 1 through the supporting blocks 6, continuing pouring after the adjustment is finished, and further supporting the upper end of the inner formwork 1 through the second supporting pieces 19 in the same way after the pouring is finished;
after the concrete is dried, the outer formwork 2 is disassembled according to the opposite steps, the first supporting piece 8 and the second supporting piece 19 are disassembled, the movable wheel 16 is controlled to move downwards through the electric push rod 14, the inner formwork 1 is lifted upwards by 3-4 cm, the positioning plate 9 is separated from the positioning rod 11, and the inner formwork 1 is pulled out of the culvert body in a mode of pulling the inner formwork 1; furthermore, the dismouting is convenient, and convenient to detach equipment and transportation can repetitious usage, and the practicality is strong, convenient to popularize and use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a no pull rod construction die carrier of apron culvert wall body, includes inner formword (1) and exterior sheathing (2), vertical parallel arrangement each other of inner formword (1) and exterior sheathing (2), the one side that the exterior sheathing (2) kept away from each other is provided with outer support frame (3), the downside of exterior sheathing (2) is provided with gravel layer (4), the downside of inner formword (1) is provided with basic unit (5), its characterized in that, one side middle part fixedly connected with supporting shoe (6) that inner formword (1) are close to each other, supporting shoe (6) are isosceles trapezoid structure, the upper and lower both sides of supporting shoe (6) equal threaded connection have a plurality of equidistance setting and be used for connecting fastening screw (7) of inner formword (1), the one side that supporting shoe (6) are close to each other is provided with the first support piece (8) that a plurality of equidistance set up, one side lower part that interior template (1) is close to each other is provided with locating plate (9) perpendicularly, a plurality of equidistance have been seted up on the right side of locating plate (9) and have been provided with locating hole (10), wear to be equipped with locating lever (11) in locating hole (10), the lower extreme fixedly connected with mounting panel (12) of locating lever (11), the upside threaded connection of mounting panel (12) has mounting screw (13) that a plurality of and locating lever (11) intervals set up, electric putter (14) that a plurality of equidistance of downside fixedly connected with of locating plate (9) set up, the lower extreme output end fixedly connected with synchronizing bar (15) of electric putter (14), a plurality of equidistance of downside fixedly connected with of synchronizing bar (15) are provided with moving wheel (16).
2. The tie-rod-free construction formwork for the cover plate culvert wall body according to claim 1 is characterized in that a mounting bar (17) is arranged at the lower end of one side, away from each other, of the outer formwork (2), the mounting bar (17) is arranged between the lower end of the outer support frame (3) and the outer formwork (2), the cross section of the mounting bar (17) is L-shaped, a fastening screw (7) is in threaded connection with one side, close to the outer formwork (2), of the mounting bar (17), and a positioning screw (18) is in threaded connection with the upper side, close to the gravel layer (4), of the mounting bar (17).
3. The tie-rod-free construction formwork for the wall body of the slab culvert according to claim 2, wherein the length of the positioning screw (18) is 20-30 cm, and the lower end of the positioning screw is inserted into the gravel layer (4).
4. The pull-rod-free construction formwork for the wall body of the slab culvert according to claim 1, wherein a plurality of second supporting pieces (19) are arranged in parallel at the upper part of one side of the inner formworks (1) close to each other, and the second supporting pieces (19) have the same structure as the first supporting pieces (8).
5. The pull-rod-free construction formwork for the wall body of the slab culvert according to claim 1 is characterized in that the first supporting piece (8) comprises rotating rods (20) arranged at the middle positions of the two inner formworks (1), reverse threads (21) with opposite directions are arranged on the left side and the right side of the inside of each rotating rod (20), mortgage rods (22) are in threaded connection inside the left end and the right end of each rotating rod (20), and one end of each mortgage rod (22) is fixedly connected with an anti-slip block (23).
6. The pull-rod-free construction formwork for the wall body of the slab culvert according to claim 5, wherein one side of the antiskid block (23) far away from the mortgage rod (22) is in contact with the inner formwork (1), one side of the antiskid block (23) near the inner formwork (1) is provided with a plurality of antiskid teeth (24), and the antiskid teeth (24) are made of rubber.
7. The pull-rod-free construction formwork for the wall body of the slab culvert according to claim 5, wherein a fixing ring (25) is fixedly connected to the middle of the ring side of the rotating rod (20), and adjusting handles (26) are symmetrically arranged on the ring side of the fixing ring (25).
8. The pull-rod-free construction formwork for the wall body of the slab culvert according to claim 1, wherein the upper end of the positioning rod (11) is provided with a round angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210364984.6A CN114645522A (en) | 2022-04-07 | 2022-04-07 | Apron is contained wall body and is had no pull rod construction die carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210364984.6A CN114645522A (en) | 2022-04-07 | 2022-04-07 | Apron is contained wall body and is had no pull rod construction die carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114645522A true CN114645522A (en) | 2022-06-21 |
Family
ID=81996883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210364984.6A Pending CN114645522A (en) | 2022-04-07 | 2022-04-07 | Apron is contained wall body and is had no pull rod construction die carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114645522A (en) |
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