CN213279018U - Bridge-penetrating floor fireproof plugging structure - Google Patents
Bridge-penetrating floor fireproof plugging structure Download PDFInfo
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- CN213279018U CN213279018U CN202022095000.8U CN202022095000U CN213279018U CN 213279018 U CN213279018 U CN 213279018U CN 202022095000 U CN202022095000 U CN 202022095000U CN 213279018 U CN213279018 U CN 213279018U
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Abstract
The utility model belongs to the technical field of the construction and specifically relates to a floor fire prevention block structure is worn to bridge is related to, it includes first steel sheet, second steel sheet and waterproof platform, fixed connection can all be dismantled with the floor top in first steel sheet both ends, fixed connection can all be dismantled with the floor bottom in second steel sheet both ends, second steel sheet and first steel sheet are passed in proper order to cable bridge one end, the equal fixed connection of lateral wall in first steel sheet and the cable bridge, the equal fixed connection of lateral wall in second steel sheet and the cable bridge, be provided with the fire prevention pillow in the cable bridge, the fire prevention pillow is located between first steel sheet and the second steel sheet, waterproof platform is located first steel sheet and keeps away from cable bridge one side, waterproof platform and floor top fixed connection. In this application, waterproof platform plays the guard action to fire prevention block structure, has reduced the probability of rivers with fire prevention block structure butt, has reduced the impaired degree of fire prevention block layer, reaches the effect that has improved fire prevention block structure fire-protection ability.
Description
Technical Field
The application relates to the field of building construction, especially, relate to a floor fire prevention block structure is worn to bridge.
Background
Modern superstores and high-rise buildings are continuously appeared along with the development of the country at present, each installation system of the buildings is complex during construction, and the laying and installation of cables are important projects. When cables are laid, the cables are usually supported by cable bridges, and the cables need to pass through floors in buildings to be installed and supplied with power. Fire prevention is also needed during cable installation, so that when fire happens accidentally, the fire spreads to other areas in a building body along the cable and a bridge frame through a hole formed by the cable and the bridge frame through a floor slab, and personal safety and equipment safety of protection personnel are affected; it is often necessary to add a fire blocking layer to the cable tray across the floor to prevent the spread of fire and the toxic gases and fumes generated by the fire.
The related art can refer to a chinese patent with publication number CN204141076U, which discloses a fireproof blocking layer, comprising a first blocking layer and a second blocking layer, wherein the first blocking layer is used for blocking a gap between an outer side wall of a cable bridge and a floor slab and is made of fireproof mud; the second plugging layer is used for plugging a gap between the inner side wall of the cable bridge and a cable and comprises fireproof materials and shelves, the shelves are fixedly connected with the inner side wall of the cable bridge, through holes for the cable to pass through are formed in the partitions, a plurality of fireproof materials are arranged, and the fireproof materials are stacked on the shelves; the first blocking layer and the second blocking layer are both located on the same horizontal plane with the floor slab. Remove the fire prevention material earlier and be close to the shelf, a plurality of fire prevention materials all with the shelf butt, then perfect the second shutoff layer, remove the cable testing bridge, the cable testing bridge passes the floor, then installs first shutoff layer, first shutoff layer respectively with cable testing bridge and floor between the gap fill up, the installation of fire prevention shutoff layer is accomplished.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: when rivers and fire prevention shutoff layer butt, the water is met and is impaired easily in the fire prevention shutoff layer, leads to the fire behavior of fire prevention shutoff layer to hang down.
SUMMERY OF THE UTILITY MODEL
In order to improve the fire protection ability of fire blocking structure, this application provides a floor fire blocking structure is worn to bridge.
The application provides a pair of floor fire prevention block structure is worn to bridge adopts following technical scheme:
a bridge-through floor fireproof plugging structure is provided, a cable bridge and a floor are arranged on the outer side, the floor is horizontally arranged, the cable bridge penetrates through the floor, the bridge-through floor fireproof plugging structure is positioned between the floor and the cable bridge, the bridge-through floor fireproof plugging structure comprises a first steel plate, a second steel plate and a waterproof platform, two ends of the first steel plate are detachably and fixedly connected with the top end of the floor, two ends of the second steel plate are detachably and fixedly connected with the bottom end of the floor, one end of the cable bridge sequentially penetrates through the second steel plate and the first steel plate, cables in the cable bridge also sequentially penetrate through the second steel plate and the first steel plate, the first steel plate is fixedly connected with the inner and outer side walls of the cable bridge, the second steel plate is fixedly connected with the inner and outer side walls of the cable bridge, a fireproof pillow is arranged in the cable bridge, the fireproof pillow is positioned between the first steel plate and, the waterproof platform is fixedly connected with the top end of the floor slab.
By adopting the technical scheme, the second steel plate is fixedly connected with the bottom end of the floor slab, the cable bridge is moved to penetrate through the second steel plate, the fireproof pillow is moved to enable the fireproof pillow to be abutted against the second steel plate, the fireproof pillow is filled to be flush with the top plate of the floor slab, the first steel plate is moved to be abutted against the top end of the floor slab, the first steel plate is fixedly connected with the top end of the floor slab, the cable bridge is continuously moved to penetrate through the first steel plate, the first steel plate and the second steel plate are fixedly connected with the cable bridge, and then the waterproof platform is installed at the top end of the floor slab; when a fire accident happens, the fire disaster reaches the first steel plate or the second steel plate along the cable in the cable bridge, the flame is abutted against the fireproof pillow, the fireproof pillow extinguishes the flame, the flame is blocked from continuing to burn along the cable, and the fireproof pillow plays roles of fire prevention and blocking; the waterproof platform plays the guard action to fire prevention block structure, has reduced the probability of rivers with fire prevention block structure butt, has reduced the impaired degree of fire prevention block layer, has reached the effect that has improved fire prevention block structure fire-proofness ability.
Preferably, a fireproof blocking material is arranged between the outer side wall of the cable bridge and the floor slab and is located between the first steel plate and the second steel plate.
By adopting the technical scheme, the fireproof blocking material is positioned in the gap between the cable bridge and the floor slab, so that the probability of the flame jumping out from the gap between the cable bridge and the floor slab is reduced, and the fireproof capacity of the fireproof blocking structure is further improved.
Preferably, be provided with first bolt between first steel sheet and the floor top, first bolt one end pass behind the first steel sheet with floor top threaded connection, be provided with the second bolt between second steel sheet and the floor bottom, second bolt one end pass behind the second steel sheet with floor bottom threaded connection.
By adopting the technical scheme, when the first steel plate is installed, the first steel plate is moved to abut against the top end of the floor slab, then the first bolt is rotated, and one end of the first bolt penetrates through the first steel plate and then is in threaded connection with the top end of the floor slab; when the first steel plate needs to be dismantled, moving the first bolt to enable the first bolt to be far away from the floor slab, and then moving the first steel plate to be far away from the top end of the floor slab; the operation to second steel sheet and second bolt is the same with the operation to first steel sheet and first bolt to realized dismantling between first steel sheet and the floor top and be connected, also realized dismantling between second steel sheet and the floor bottom and be connected.
Preferably, first steel sheet level sets up, is provided with fire protection coating between first steel sheet top and the floor top, and fire protection coating covers first bolt, first steel sheet top, first steel sheet lateral wall and floor top.
By adopting the technical scheme, the fireproof coating is sequentially coated on the side wall of the first steel plate and the top end of the adjacent floor slab, and the side wall of the first steel plate is connected with the top end of the floor slab by the fireproof coating, so that the fireproof effect is achieved, and the probability that the flame penetrates through a gap between the first steel plate and the top end of the floor slab is reduced; then scribble the fire protection coating on first steel sheet top and first bolt, the fire protection coating plays the guard action to first bolt, has increased first bolt's life.
Preferably, the waterproof platform is far away from first steel sheet one end fixedly connected with baffle, baffle one end and waterproof platform fixed connection, the other end and cable testing bridge fixed connection.
Through adopting above-mentioned technical scheme, the baffle is located waterproof platform and keeps away from between first steel sheet top and the cable testing bridge, and the baffle plays the guard action to fire prevention block structure, has reduced the probability of rivers with fire prevention block structure butt once more, has improved the protective capacities of protection platform to fire prevention block structure.
Preferably, the baffle is obliquely arranged, and one end, close to the cable bridge, of the baffle is far away from the first steel plate.
Through adopting above-mentioned technical scheme, because the baffle slope sets up, when rivers and baffle butt, rivers flow down along the baffle, have avoided rivers gathering on the baffle.
Preferably, a fixing clip is arranged in the cable bridge, a cable in the cable bridge penetrates through the fixing clip, and the fixing clip is detachably and fixedly connected with the inner wall of the cable bridge.
Through adopting above-mentioned technical scheme, remove fixing clip and cable butt, the cable passes the fixing clip, then with fixing clip and cable testing bridge inner wall fixed connection, the fixing clip has realized the fixed connection of cable in cable testing bridge and the cable testing bridge, has strengthened the stability of cable in the cable testing bridge, has also reduced the probability that takes place the cable winding.
Preferably, be provided with coupling assembling between fixing clip and the cable testing bridge inner wall, coupling assembling includes first board, second board and connecting bolt, first board and second board all with cable testing bridge inner wall fixed connection, between fixing clip one end inserts first board and the second board, connecting bolt one end pass first board and fixing clip back and second board threaded connection in proper order.
By adopting the technical scheme, the fixing clamp is moved to be close to the cable bridge, one end of the fixing clamp is inserted between the first plate and the second plate, then the connecting bolt is rotated, and one end of the connecting bolt sequentially penetrates through the first plate and the fixing clamp and then is in threaded connection with the second plate; when the fixing clamp is detached, the connecting bolt is rotated, one end of the connecting bolt is far away from the first plate, and then the connecting bolt is moved away from the cable bridge, so that detachable connection between the fixing clamp and the cable bridge is achieved, and convenience in connection of the fixing clamp and the cable bridge is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the waterproof platform, the waterproof platform plays a role in protecting the fireproof blocking structure, the probability that water flow is abutted to the fireproof blocking structure is reduced, the damage degree of the fireproof blocking layer is reduced, and the effect of improving the fireproof capacity of the fireproof blocking structure is achieved;
2. through the arrangement of the fireproof blocking material, the probability of fire seedlings leaping out from a gap between the cable bridge and the floor slab is reduced, and the fireproof capacity of the fireproof blocking structure is further improved;
3. through the arrangement of the fixing clamp, the fixed connection between the cable bridge and the cable in the cable bridge is realized, the stability of the cable in the cable bridge is enhanced, and the probability of cable winding is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present application;
FIG. 2 is a cross-sectional view of the present application;
fig. 3 is an enlarged schematic view of a portion a of fig. 1.
Description of reference numerals: 1. a cable bridge; 11. a cable; 12. fixing the card; 2. a floor slab; 3. a first steel plate; 31. a first bolt; 32. a fire-retardant coating; 4. a second steel plate; 41. a second bolt; 5. a fire-proof pillow; 6. fireproof blocking; 7. a waterproof platform; 71. a baffle plate; 8. a connecting assembly; 81. a first plate; 82. a second plate; 83. and connecting the bolts.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses floor fire prevention block structure is worn to bridge. Referring to fig. 1 and 2, a floor slab 2 and a cable bridge 1 are arranged on the outer side of a bridge-through floor slab fireproof plugging structure, the floor slab 2 is horizontally arranged, a through hole is formed in the floor slab 2, one end of the cable bridge 1 penetrates through the through hole, the cable bridge 1 is vertically arranged, a cable 11 is arranged in the cable bridge 1, the bridge-through floor slab fireproof plugging structure is positioned between the floor slab 2 and the cable bridge 1, the fireproof plugging structure comprises a first steel plate 3, a second steel plate 4, a fireproof pillow 5 and a fireproof plugging material 6, the first steel plate 3 is fixedly connected with the top end of the floor slab 2, the second steel plate 4 is fixedly connected with the bottom end of the floor slab 2, the cable bridge 1 and the cable 11 respectively penetrate through the first steel plate 3 and the second steel plate 4, the cable bridge 1 is fixedly connected with the first steel plate 3 and the second steel plate 4, the fireproof pillow 5 and the fireproof plugging material 6 are both positioned in the first steel plate, the fireproof putty 6 is positioned in a gap between the cable bridge frame 1 and the through hole. Placing the fireproof pillow 5 in a cable 11 bridge, enabling the fireproof pillow 5 to abut against a second steel plate 4, enabling one end, far away from the second steel plate 4, of the fireproof pillow 5 to be flush with the top end of the floor slab 2, then filling a gap between the cable bridge 1 and the through hole with a fireproof blocking material 6, enabling one end of the fireproof blocking material 6 to abut against the second steel plate 4, and enabling the other end of the fireproof blocking material to be flush with the top end of the floor slab 2; when the unexpected conflagration that takes place, the conflagration reachs first steel sheet 3 or second steel sheet 4 departments along cable 11, and the flame and the 5 butt of fire prevention pillow, fire prevention pillow 5 make the flame extinguish, block that the flame continues the burning along cable 11.
Referring to fig. 2, the cable bridge 1 is a C-shaped structure, two fixing clips 12 are arranged between the inner wall of the cable bridge 1 and the cable 11, the number of the fixing clips 12 is two, the cable 11 respectively passes through the two fixing clips 12, the two fixing clips 12 are horizontally arranged, slots are formed in the two fixing clips 12 close to the side wall of the cable 11, the number of the slots on each fixing clip 12 is the same as that of the cable 11, each slot respectively passes through the top end and the bottom end of the fixing clip 12, each slot is U-shaped, and the two fixing clips 12 are respectively located on two sides of each through hole; two fixing clamps 12 all are provided with coupling assembling 8 with cable testing bridge 1 inner wall, every group coupling assembling 8 all includes first board 81, second board 82 and connecting bolt 83, first board 81 and second board 82 all are provided with two, a first board 81 and a second board 82 set up to a set of, divide into two sets ofly altogether, two sets of first board 81 and second board 82 all with cable testing bridge 1 inner wall fixed connection, fixing clamp 12 one end inserts between the first board 81 and the second board 82 of every group, connecting bolt 83 one end pass first board 81 and fixing clamp 12 in proper order after with second board 82 threaded connection. Moving the fixing clip 12 close to the cable 11, wherein each slot abuts against the cable 11, two ends of the fixing clip 12 are respectively inserted between the two groups of first plates 81 and second plates 82 at the moment, and the two connecting bolts 83 are respectively rotated, so that one end of each connecting bolt 83 sequentially penetrates through the first plates 81 and the fixing clip 12 and then is in threaded connection with the second plates 82; the above steps are repeated for another card 12.
Referring to fig. 3, a first steel plate 3 and a second steel plate 4 are horizontally arranged, four first bolts 31 are arranged between the first steel plate 3 and the top end of the floor slab 2, and one end of each first bolt 31 penetrates through the first steel plate 3 and then is in threaded connection with the top end of the floor slab 2; second bolts 41 are arranged between the second steel plate 4 and the bottom end of the floor slab 2, four second bolts 41 are arranged, and one end of each second bolt 41 penetrates through the second steel plate 4 and then is in threaded connection with the bottom end of the floor slab 2; the top end of the first steel plate 3 and the top end of the floor slab 2 are provided with a fireproof coating 32, the fireproof coating 32 covers each first bolt 31, the top end of the first steel plate 3, the side wall of the first steel plate 3 and the top end of the floor slab 2, and the fireproof coating 32 is far away from the cable bridge 1.
Firstly, mounting a second steel plate 4, moving the second steel plate 4 to abut against the bottom end of the floor slab 2, then respectively rotating each second bolt 41, and connecting one end of each second bolt 41 with the top end of the floor slab 2 after penetrating through the first steel plate 3; then moving the cable bridge 1 to pass through the second steel plate 4, and enabling the cable 11 to be abutted against the second steel plate 4; then, installing a first steel plate 3, moving the first steel plate 3 to abut against the top end of the floor slab 2, enabling the cable bridge 1 to also penetrate through the first steel plate 3, abutting the first steel plate 3 with the cable 11, then respectively rotating each first bolt 31, and enabling one end of each first bolt 31 to penetrate through the first steel plate 3 and then be in threaded connection with the top end of the floor slab 2; after the first bolts 31 are installed, the fireproof coating 32 is sequentially coated on each first bolt 31, the top end of the first steel plate 3, the side wall of the first steel plate 3 and the top end of the floor slab 2.
Referring to fig. 1 and 2, the waterproof platform 7 is annular, the waterproof platform 7 is vertically arranged, the bottom end of the waterproof platform 7 is fixedly connected with the top end of the floor slab 2, and the waterproof platform 7 is positioned on one side of the first steel plate 3, which is far away from the cable 11 bridge; the top end of the protection platform is fixedly connected with a baffle 71, one end, far away from the protection platform, of the baffle 71 is fixedly connected with the cable bridge 1, the baffle 71 is obliquely arranged, and the top end of the baffle 71 is far away from the first steel plate 3. When the waterproof platform 7 is installed, the waterproof platform 7 is moved to be close to the top plate of the floor slab 2, so that the bottom end of the waterproof platform 7 is fixedly connected with the top end of the floor slab 2, the waterproof platform 7 drives the baffle 71 to abut against the cable bridge 1, and then the baffle 71 is fixedly connected with the cable bridge 1; rivers fall on baffle 71 department, then fall down along baffle 71 and waterproof platform 7, and waterproof platform 7 plays the guard action to fire prevention block structure, has reduced the probability of rivers with fire prevention block structure butt, has reduced the impaired degree of fire prevention block layer, has reached the effect that has improved fire prevention block structure fire-protection ability.
The implementation principle of this application embodiment a floor fire prevention block structure is worn to bridge does: firstly, moving the fixing card 12 to be close to the cable 11, enabling each slot to be abutted against the cable 11, respectively inserting two ends of the fixing card 12 between two groups of first plates 81 and second plates 82, respectively rotating two connecting bolts 83, enabling one end of each connecting bolt 83 to sequentially penetrate through the first plates 81 and the fixing card 12 and then be in threaded connection with the second plates 82, and repeating the steps for the other fixing card 12; then moving a second steel plate 4 to abut against the bottom end of the floor slab 2, respectively rotating each second bolt 41, and connecting one end of each second bolt 41 with the top end of the floor slab 2 through threads after penetrating through the first steel plate 3; then moving the cable bridge 1 to pass through the second steel plate 4, and enabling the cable 11 to be abutted against the second steel plate 4; place fire prevention pillow 5 in 11 bridges of cable, fire prevention pillow 5 and 4 butts of second steel sheet, fire prevention pillow 5 keeps away from 4 one ends of second steel sheet and 2 tops of floor and flushes, then fills up cable testing bridge 1 with the gap between the perforation with fire prevention putty 6, 6 one end of fire prevention putty and 4 butts of second steel sheet, and the other end flushes with 2 tops of floor.
Then, installing a first steel plate 3, moving the first steel plate 3 to abut against the top end of the floor slab 2, enabling the cable bridge 1 to also penetrate through the first steel plate 3, abutting the first steel plate 3 against the cable 11, abutting the first steel plate 3 against the fireproof pillow 5 and the fireproof putty 6 at the moment, then respectively rotating each first bolt 31, and connecting one end of each first bolt 31 with the top end of the floor slab 2 after penetrating through the first steel plate 3; then, coating a fireproof coating 32 on each first bolt 31, the top end of the first steel plate 3, the side wall of the first steel plate 3 and the top end of the floor slab 2 in sequence; the movable waterproof platform 7 is close to the top plate of the floor slab 2, so that the bottom end of the waterproof platform 7 is fixedly connected with the top end of the floor slab 2, the waterproof platform 7 drives the baffle 71 to abut against the cable bridge 1, and then the baffle 71 is fixedly connected with the cable bridge 1.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a floor fire prevention block structure is worn to bridge, the outside is provided with cable testing bridge (1) and floor (2), floor (2) level sets up, and floor (2) are passed in cable testing bridge (1), and floor fire prevention block structure is worn to bridge is located between floor (2) and cable testing bridge (1), its characterized in that: the bridge-penetrating floor fireproof plugging structure comprises a first steel plate (3), a second steel plate (4) and a waterproof platform (7), wherein both ends of the first steel plate (3) are detachably and fixedly connected with the top end of a floor (2), both ends of the second steel plate (4) are detachably and fixedly connected with the bottom end of the floor (2), one end of a cable (11) bridge sequentially penetrates through the second steel plate (4) and the first steel plate (3), a cable (11) in the cable (11) bridge also sequentially penetrates through the second steel plate (4) and the first steel plate (3), the first steel plate (3) and the inner and outer side walls of the cable (11) bridge are fixedly connected, the second steel plate (4) and the inner and outer side walls of the cable (11) bridge are fixedly connected, a fireproof pillow (5) is arranged in the cable bridge (1), the fireproof pillow (5) is positioned between the first steel plate (3) and the second steel plate (4), the waterproof platform (7) is positioned on one side, far away from the cable (11) bridge, of, the waterproof platform (7) is fixedly connected with the top end of the floor slab (2).
2. The bridge floor fire prevention block structure of claim 1, characterized in that: be provided with fire prevention putty (6) between cable testing bridge (1) lateral wall and floor (2), fire prevention putty (6) are located between first steel sheet (3) and second steel sheet (4).
3. The bridge floor fire prevention block structure of claim 1, characterized in that: be provided with first bolt (31) between first steel sheet (3) and floor (2) top, first bolt (31) one end pass behind first steel sheet (3) with floor (2) top threaded connection, be provided with second bolt (41) between second steel sheet (4) and floor (2) bottom, second bolt (41) one end pass behind second steel sheet (4) with floor (2) bottom threaded connection.
4. The bridge floor fire prevention block structure of claim 3, characterized in that: first steel sheet (3) level sets up, is provided with fire protection coating (32) between first steel sheet (3) top and floor (2) top, and fire protection coating (32) cover first bolt (31), first steel sheet (3) top, first steel sheet (3) lateral wall and floor (2) top.
5. The bridge floor fire prevention block structure of claim 1, characterized in that: one end, far away from the first steel plate (3), of the waterproof platform (7) is fixedly connected with a baffle (71), one end of the baffle (71) is fixedly connected with the waterproof platform (7), and the other end of the baffle is fixedly connected with the cable bridge (1).
6. The bridge floor fire prevention block structure of claim 5, characterized in that: the baffle (71) is obliquely arranged, and one end, close to the cable bridge (1), of the baffle (71) is far away from the first steel plate (3).
7. The bridge floor fire prevention block structure of claim 1, characterized in that: the cable bridge is characterized in that a fixing clamp (12) is arranged in the cable bridge (1), a cable (11) in the cable bridge (1) penetrates through the fixing clamp (12), and the fixing clamp (12) is detachably and fixedly connected with the inner wall of the cable bridge (1).
8. The bridge floor fire prevention block structure of claim 7, characterized in that: be provided with coupling assembling (8) between fixing clip (12) and cable testing bridge (1) inner wall, coupling assembling (8) include first board (81), second board (82) and connecting bolt (83), first board (81) and second board (82) all with cable testing bridge (1) inner wall fixed connection, fixing clip (12) one end inserts between first board (81) and second board (82), connecting bolt (83) one end pass first board (81) and fixing clip (12) back and second board (82) threaded connection in proper order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022095000.8U CN213279018U (en) | 2020-09-22 | 2020-09-22 | Bridge-penetrating floor fireproof plugging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022095000.8U CN213279018U (en) | 2020-09-22 | 2020-09-22 | Bridge-penetrating floor fireproof plugging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213279018U true CN213279018U (en) | 2021-05-25 |
Family
ID=75943885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022095000.8U Expired - Fee Related CN213279018U (en) | 2020-09-22 | 2020-09-22 | Bridge-penetrating floor fireproof plugging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213279018U (en) |
-
2020
- 2020-09-22 CN CN202022095000.8U patent/CN213279018U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210525 |