CN111875238A - Float glass tin bath - Google Patents
Float glass tin bath Download PDFInfo
- Publication number
- CN111875238A CN111875238A CN202010832354.8A CN202010832354A CN111875238A CN 111875238 A CN111875238 A CN 111875238A CN 202010832354 A CN202010832354 A CN 202010832354A CN 111875238 A CN111875238 A CN 111875238A
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- CN
- China
- Prior art keywords
- tin bath
- float glass
- linear motor
- glass tin
- guide rail
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/18—Controlling or regulating the temperature of the float bath; Composition or purification of the float bath
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention relates to the field of float glass production devices, and discloses a float glass tin bath which comprises a tin bath body for containing tin liquor, and further comprises a linear motor guide rail part positioned above the tin bath body, wherein the linear motor guide rail part transversely passes through the float glass tin bath along the float glass tin bath, and further comprises a linear motor which is arranged on the linear motor guide rail part and can move along the linear motor guide rail part. The linear motor in the float glass tin bath can move transversely along the float glass tin bath as required and prevent the tin liquor from flowing back by generating a magnetic field, so that the optimized float glass tin bath forming function is obtained.
Description
Technical Field
The invention relates to the field of float glass production devices, in particular to a float glass tin bath.
Background
In the existing float glass tin bath, the through groove of the linear motor is only arranged at the outlet of the tin bath and is used for removing tin ash, and the linear motor is only used for removing slag at the position, so the machine head of the linear motor is short in length, the machine head is directly fixed at one end of a steel structure with a cooling water drum, the other end of the machine head is fixed by a suspension fixing device or a landing fixing device, and then a working part (or the machine head) of the linear motor is inserted into the tin bath.
Disclosure of Invention
In view of the above, the present invention is directed to a float glass tin bath, in which a linear motor can move along the float glass tin bath in a transverse direction as required and block the backflow of molten tin by generating a magnetic field, thereby obtaining an optimized float glass tin bath forming function.
The invention provides a float glass tin bath which comprises a tin bath body used for containing tin liquor, and further comprises a linear motor guide rail part positioned above the tin bath body, wherein the linear motor guide rail part transversely passes through the float glass tin bath along the float glass tin bath, and further comprises a linear motor which is arranged on the linear motor guide rail part and can move along the linear motor guide rail part.
Preferably, the linear motor guide rail part comprises a horizontal guide rail, the linear motor guide rail part further comprises a first pulley block and a second pulley block which are arranged on the horizontal guide rail and correspond to each other and along the longitudinal two side edges of the float glass tin bath, the first pulley block and the second pulley block can transversely and synchronously slide on the horizontal guide rail along the float glass tin bath, the lower parts of the first pulley block and the second pulley block extend to the lower part of the horizontal guide rail and are connected through a suspension rod, and the linear motor is suspended on the suspension rod.
Preferably, the first pulley block and the second pulley block are both arranged as: the pulley device comprises an upper pulley supported above the horizontal guide rail and a lower pulley positioned below the horizontal guide rail, wherein the upper pulley and the lower pulley are connected with each other through a pulley connecting part.
Preferably, the float glass tin bath comprises a plurality of first pulley blocks and a plurality of second pulley blocks which are arranged at intervals along the transverse direction of the float glass tin bath, and the plurality of first pulley blocks and the plurality of second pulley blocks correspond to each other one by one.
Preferably, the linear motor comprises a linear motor frame body transversely extending along the float glass tin bath, the linear motor frame body is suspended on the suspension rod through a connecting piece, and the linear motor further comprises a linear motor working part arranged in the linear motor frame body.
Preferably, the float glass tin bath comprises a roof brick structure arranged at the top of the tin bath body and a roof beam positioned above the tin bath body, wherein a through groove extending transversely along the float glass tin bath is formed in the roof brick structure, and the float glass tin bath further comprises a guide rail support structure arranged in the through groove, and the guide rail support structure is provided with an internal installation space and a bottom opening; the linear motor guide rail part is accommodated in the internal installation space, the linear motor is suspended at the bottom of the linear motor guide rail part through the bottom opening, and the upper part of the linear motor guide rail part is connected to the guide rail supporting structure; the float glass tin bath further comprises a hanger bar, the bottom of the hanger bar is connected to the top of the guide rail support structure, and the upper portion of the hanger bar is connected to the top beam.
Preferably, the top beam is formed with a vertical through-hole, the hanger bar is formed with a screw thread at an upper portion thereof, the upper portion of the hanger bar extends upward and passes through the vertical through-hole, and the float glass tin bath further includes a support nut screw-fitted to the upper portion of the hanger bar and supported on an upper surface of the top beam.
Preferably, the rail support structure has a top opening, the linear motor rail part is provided at the top with a first connecting part extending upwards through the top opening, the rail support structure is provided at the top with a second connecting part, the first connecting part, the second connecting part and the bottom of the hanger rod are correspondingly formed with through holes respectively, the float glass tin bath further comprises a connecting piece passing through the first connecting part, the second connecting part and the bottom of the hanger rod to connect the first connecting part, the second connecting part and the bottom of the hanger rod together; and/or the guide rail supporting structure further comprises a nitrogen pipe arranged in the internal installation space, and a nitrogen nozzle is arranged on the nitrogen pipe.
Preferably, the guide rail support structure comprises two halves which are arranged symmetrically to each other in the longitudinal direction of the float glass tin bath, each half has a hollow cavity, and a cooling liquid inlet and a cooling liquid outlet which are communicated with the hollow cavity are respectively arranged on the two halves.
Preferably, the float glass tin bath comprises a plurality of the linear motors arranged at intervals transversely along the float glass tin bath.
In the float glass tin bath, the linear motor can move along the guide rail part of the linear motor according to actual needs so as to transversely move along the float glass tin bath or stay at a proper position, and then the tin liquor is prevented from flowing back by generating a magnetic field, so that the optimized forming function of the float glass tin bath is obtained.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a top view of a float glass tin bath according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the float glass tin bath of FIG. 1 taken along the direction A-A;
FIG. 3 is an enlarged view of a portion of the float glass tin bath of FIG. 2;
FIG. 4 is a cross-sectional view of the float glass tin bath of FIG. 1 taken along the direction B-B;
FIG. 5 is an enlarged view of a portion of the float glass tin bath of FIG. 4.
Description of the reference numerals
1, a linear motor; 2, a linear motor frame body; 3 a cooling liquid input pipe; 4 a cooling liquid return pipe; 5, tin liquid; 6 a glass ribbon; 7, a first pulley block; 8 linear motor rail portions; 9 connecting pieces; 10 a boom; 11; 12 supporting the nut; 13 a rail support structure; 14 angle steel; 15 a fastener; 16 a coolant inlet; 17 a cooling liquid outlet; 18 a nitrogen tube; 19 a roof brick construction; 20 top stringers; 21 a top cross beam; 22 top connecting beam; 23, a tin bath top cover; 24 a seal member; 25 a tin bath body; 26 a second pulley block; 27 suspension rod
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
In the present invention, it is to be understood that the terms "away", "toward", "width", "length", "parallel", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and also correspond to orientations or positional relationships in actual use; the use of directional words such as "upper" and "lower" generally means up and down as illustrated with reference to the accompanying drawings; "inner and outer" refer to the inner and outer relative to the contours of the components themselves and are not intended to indicate that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention; also, the "float glass tin bath longitudinal direction" described in the present application refers to the moving direction of the glass ribbon 6 in the tin bath during operation of the float glass tin bath, corresponding to the left-right direction in fig. 1; "transverse to the float glass tin bath" means the horizontal direction perpendicular to the longitudinal direction of the float glass tin bath, corresponding to the up-down direction in fig. 1.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The invention provides a float glass tin bath, which comprises a tin bath body 25 for containing molten tin 5, and further comprises a linear motor guide rail part 8 positioned above the tin bath body 25, wherein the linear motor guide rail part 8 transversely passes through the float glass tin bath along the float glass tin bath, and the float glass tin bath further comprises a linear motor 1 which is arranged on the linear motor guide rail part 8 and can move along the linear motor guide rail part 8.
In the float glass tin bath of the invention, the linear motor 1 can move along the linear motor guide rail part 8 according to actual needs to transversely move along the float glass tin bath or stay at a proper position, and then the tin liquor is prevented from reflowing by generating a magnetic field, thereby obtaining the optimized forming function of the float glass tin bath.
As for specific structures of the linear motor guide rail part 8 and the linear motor 1, as an option, referring to fig. 1 to 3, the linear motor guide rail part 8 includes a horizontal guide rail, the linear motor guide rail part 8 further includes a first pulley block 7 and a second pulley block 26 which are disposed at both side edges of the horizontal guide rail in a longitudinal direction of a float glass tin bath, the first pulley block 7 and the second pulley block 26 can slide on the horizontal guide rail in a lateral direction of the float glass tin bath in a synchronous manner, lower portions of the first pulley block 7 and the second pulley block 26 extend to below the horizontal guide rail and are connected by a suspension rod 27, and the linear motor 1 is suspended on the suspension rod 27. The horizontal guide rail may have an i-shaped cross section along the longitudinal direction of the float glass tin bath, and for example, an i-beam-like structure may be used as the horizontal guide rail.
Further, the first pulley block 7 and the second pulley block 26 are both configured to: the pulley device comprises an upper pulley supported above the horizontal guide rail and a lower pulley positioned below the horizontal guide rail, wherein the upper pulley and the lower pulley are connected with each other through a pulley connecting part. In this embodiment, the upper pulley and the lower pulley are disposed to sandwich the horizontal guide rail, whereby the linear motor guide rail portion 8 can be made to have a stronger structural stability; the upper and lower pulleys are connected to each other at their sides facing outside the horizontal guide rail in the lateral and longitudinal directions of the float glass tin bath by a pulley connection part, for example, the outer ends of the shafts of the upper and lower pulleys may be connected together by a connection plate.
And, optionally, the float glass tin bath comprises a plurality of the first pulley blocks 7 and a plurality of the second pulley blocks 26 which are arranged at intervals along the transverse direction of the float glass tin bath, and the plurality of the first pulley blocks 7 and the plurality of the second pulley blocks 26 correspond to each other one by one, so as to provide more stable installation everywhere of the linear motor 1 when the linear motor 1 is longer along the transverse direction of the float glass tin bath.
Referring to fig. 3, regarding the specific structure of the linear motor 1, in the present embodiment, the linear motor 1 includes a linear motor frame 2 extending in a transverse direction of the float glass tin bath, the linear motor frame 2 is suspended from the suspension rod 27 by a connecting member 9, and the linear motor 1 further includes a linear motor operating portion disposed in the linear motor frame 2.
The end face of the linear motor frame body 2 along the longitudinal direction of the float glass tin bath is approximately inverted T-shaped and comprises a horizontal part positioned at the bottom and a vertical part vertically extending upwards from the center of the horizontal part, the interior of the linear motor frame body 2 is hollow, the linear motor working part is arranged in the horizontal part, the top of the vertical part is connected to the connecting piece 9, a cooling liquid cavity is further arranged in the linear motor frame body 2, a cooling liquid input pipe 3 and a cooling liquid return pipe 4 transversely extending along the float glass tin bath are arranged in the cooling liquid cavity, and the linear motor working part is positioned below the cooling liquid cavity and close to the cooling liquid input pipe 3 and the cooling liquid return pipe 4 so as to be cooled through cooling liquid in the cooling liquid cavity.
Preferably, the float glass tin bath comprises a roof brick structure 19 arranged at the top of the tin bath body 25 and a roof beam positioned above the tin bath body 25, a through groove extending transversely along the float glass tin bath is formed in the roof brick structure 19, the float glass tin bath further comprises a guide rail support structure 13 arranged in the through groove, and the guide rail support structure 13 is provided with an inner installation space and a bottom opening; the linear motor guide rail part 8 is accommodated in the internal installation space, the linear motor 1 is suspended at the bottom of the linear motor guide rail part 8 through the bottom opening, and the upper part of the linear motor guide rail part 8 is connected to the guide rail supporting structure 13; the float glass tin bath further comprises a hanger bar 10, the bottom of the hanger bar 10 being attached to the top of the rail support structure 13, and the upper portion of the hanger bar 10 being attached to the roof bar. Therefore, part or all of the weight of the guide rail support structure 13, the linear motor guide rail part 8 and the linear motor 1 suspended at the bottom of the linear motor guide rail part 8 can be transferred to the top beam through the hanger rod 10, namely, the guide rail support structure 13, the linear motor guide rail part 8 and the linear motor 1 suspended at the bottom of the linear motor guide rail part 8 are partially or completely supported by the top beam, so that the pressure on the structure of the top cover brick structure 19 is reduced, and the structural improvement can solve the problem that the existing float glass tin bath cannot be provided with the linear motor transversely passing through the float glass tin bath due to the fact that the installation structure or the strength is not allowed.
Further, the roof beam is formed with a vertical through hole, the suspension rod 10 is formed with a screw thread at an upper portion thereof, the upper portion of the suspension rod 10 extends upward and passes through the vertical through hole, and the float glass tin bath further includes a support nut 12 screw-fitted to the upper portion of the suspension rod 10 and supported on an upper surface of the roof beam. The nut 12 may have a larger lower end surface to better support on the top beam and to transfer the weight of the rail support structure 13, the linear motor rail part 8 and the linear motor 1 suspended at the bottom of the linear motor rail part 8 to the top beam.
And, wherein the top beam can be a top longitudinal beam 20 or a top transverse beam 21 of the float glass tin bath, the top longitudinal beam 20 and the top transverse beam 21 are connected with each other, and the float glass tin bath further comprises top connecting beams 22 for being positioned at two lateral side edges.
Further, the rail support structure 13 has a top opening, the linear motor rail part 8 is provided with a first connecting part at the top extending upwards through the top opening, the rail support structure 13 is provided with a second connecting part at the top, the first connecting part, the second connecting part and the bottom of the suspension rod 10 are correspondingly formed with through holes respectively, the float glass tin bath further comprises a fastener 15 penetrating through the first connecting part, the second connecting part and the bottom of the suspension rod 10 to connect the first connecting part, the second connecting part and the bottom of the suspension rod 10 together; in the present embodiment, the first connecting portion is formed in a plate shape, the plate-shaped first connecting portion is welded to a center line of an upper surface of the i-beam (horizontal rail), the first connecting portion is provided with a through hole, two angle steels 14 are symmetrically arranged on the two sides of the first connecting part and transversely attached to the upper surface of the guide rail supporting structure 13 along the float glass tin bath, the bottom surfaces of the angle steels 14 are welded to the upper surface of the guide rail supporting structure 13, through holes are formed in the upper parts of the angle steels 14, through holes are correspondingly formed in the bottom of the suspender 10, the first connecting part, the second connecting part and the bottom of the suspender 10 are connected together by bolts, finally, the gravity borne by the guide rail supporting structure 13 acts on the horizontal guide rail, the horizontal guide rail and the gravity borne by the linear motor 1 are all led out of the tin bath body 25 through the suspender 10, and finally, the gravity borne by the linear motor 1 is transmitted to the top beam by.
The through groove of the roof tile structure 19 may be formed to be recessed in the lower portion to form a stepped portion, and the rail support structure 13 may be located on the stepped portion.
Referring to fig. 3, the guide rail supporting structure 13 may include two halves symmetrically disposed to each other along a longitudinal direction of the float glass tin bath, each half having a hollow cavity, and a cooling liquid inlet 16 and a cooling liquid outlet 17 respectively disposed on the two halves and communicated with the hollow cavity, so that a portion of the roof brick structure 19 may be cooled by introducing a cooling liquid.
It will be appreciated that, referring to figure 3, the axis of the boom 10 is preferably in the vertical direction and in the longitudinal direction of the float glass bath, the axis of the boom 10 passes through the track support structure 13, the linear motor track section 8 and the centre of the linear motor 1 suspended from the bottom of the linear motor track section 8.
And, the guide rail supporting structure 13 further includes a nitrogen pipe 18 disposed in the internal installation space, the nitrogen pipe 18 is provided with nitrogen nozzles to supply nitrogen into the internal installation space to serve as a gas seal, preferably, the nitrogen pipe 18 is disposed into a lower portion of the internal installation space, and optionally, the nitrogen pipe 18 extends in a transverse direction of the float glass tin bath, and two nitrogen pipes 18 are symmetrically disposed in the transverse direction of the float glass tin bath, a plurality of nitrogen nozzles are disposed at intervals on each nitrogen pipe 18, and the nitrogen nozzles on the two nitrogen pipes 18 are disposed in one-to-one correspondence to form a better gas seal effect.
Also, the tin bath body 1 further includes a tin bath roof 23 which overlies the roof tile structure 19, and the float glass tin bath has a seal 24 which is fitted around the hanger bar 10 to the tin bath roof 23 to maintain a sealed environment within the tin bath body 1.
In addition, it is understood that the float glass tin bath may include a plurality of the linear motors 1 spaced apart laterally along the float glass tin bath, and each of the linear motors 1 may be independently slidable and independently controllable in magnetic field to more precisely block backflow of tin bath throughout the longitudinal direction of the float glass tin bath by generating a magnetic field, and of course, alternatively, the float glass tin bath may include one linear motor 1, and the linear motor 1 may be disposed substantially across or across the entire float glass tin bath in the lateral direction of the float glass tin bath for better blocking backflow of tin bath across the float glass tin bath.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. Including each of the specific features, are combined in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. A float glass tin bath comprising a tin bath body (25) for containing tin bath (5), characterised in that the float glass tin bath further comprises a linear motor track section (8) located above the tin bath body (25), the linear motor track section (8) passing transversely through the float glass tin bath along the float glass tin bath, the float glass tin bath further comprising a linear motor (1) mounted to the linear motor track section (8) and movable along the linear motor track section (8).
2. The float glass bath according to claim 1, characterized in that the linear motor guide section (8) comprises a horizontal rail, the linear motor guide section (8) further comprising a first pulley block (7) and a second pulley block (26) corresponding to each other and provided at both side edges of the horizontal rail in the longitudinal direction of the float glass bath, the first pulley block (7) and the second pulley block (26) being capable of sliding synchronously in the transverse direction of the float glass bath on the horizontal rail, the lower parts of the first pulley block (7) and the second pulley block (26) extending below the horizontal rail and being connected by a suspension bar (27), the linear motor (1) being suspended on the suspension bar (27).
3. A float glass tin bath according to claim 2, characterised in that the first pulley block (7) and the second pulley block (26) are both arranged as: the pulley device comprises an upper pulley supported above the horizontal guide rail and a lower pulley positioned below the horizontal guide rail, wherein the upper pulley and the lower pulley are connected with each other through a pulley connecting part.
4. A float glass tin bath according to claim 2, characterised in that the float glass tin bath comprises a plurality of the first pulley block (7) and a plurality of the second pulley block (26) arranged at a spacing laterally along the float glass tin bath, the plurality of the first pulley block (7) and the plurality of the second pulley block (26) being in one-to-one correspondence.
5. A float glass tin bath according to claim 2, characterised in that the linear motor (1) comprises a linear motor frame (2) extending transversely of the float glass tin bath, the linear motor frame (2) being suspended from the suspension bar (27) by a connection (9), the linear motor (1) further comprising a linear motor working part arranged in the linear motor frame (2).
6. The float glass tin bath according to claim 1, characterized in that the float glass tin bath comprises a roof tile structure (19) disposed at the top of the tin bath body (25) and a roof beam located above the tin bath body (25), the roof tile structure (19) having formed therein a through slot extending transversely of the float glass tin bath, the float glass tin bath further comprising a guide rail support structure (13) disposed in the through slot, the guide rail support structure (13) having an interior mounting space and a bottom opening; the linear motor guide rail part (8) is accommodated in the internal installation space, the linear motor (1) is suspended at the bottom of the linear motor guide rail part (8) through the bottom opening, and the upper part of the linear motor guide rail part (8) is connected to the guide rail supporting structure (13); the float glass tin bath further comprises a hanger bar (10), the bottom of the hanger bar (10) is connected to the top of the guide rail support structure (13), and the upper part of the hanger bar (10) is connected to the top beam.
7. The float glass tin bath according to claim 6, wherein the top beam is formed with a vertical through hole, the hanger bar (10) is formed with a screw thread at an upper portion, the upper portion of the hanger bar (10) extends upward and passes through the vertical through hole, and the float glass tin bath further comprises a support nut (12) screw-fitted to the upper portion of the hanger bar (10) and supported on an upper surface of the top beam.
8. The float glass tin bath according to claim 6, wherein the rail support structure (13) has a top opening, the linear motor rail portion (8) is provided at the top with a first connection portion extending upwardly through the top opening, the rail support structure (13) is provided at the top with a second connection portion, the first connection portion, the second connection portion and the bottom of the hanger bar (10) are correspondingly formed with through holes, respectively, the float glass tin bath further comprising a fastener (15) passing through the through holes of the first connection portion, the second connection portion and the bottom of the hanger bar (10) to connect the first connection portion, the second connection portion and the bottom of the hanger bar (10) together; and/or the guide rail supporting structure (13) further comprises a nitrogen pipe (18) arranged in the internal installation space, and a nitrogen nozzle is arranged on the nitrogen pipe (18).
9. A float glass tin bath according to claim 6, characterised in that the guide rail support structure (13) comprises two halves arranged symmetrically to each other in the longitudinal direction of the float glass tin bath, each half having a hollow cavity, and that the two halves are provided with a coolant inlet (16) and a coolant outlet (17) communicating with the hollow cavity, respectively.
10. A float glass tin bath according to claim 6, characterised in that it includes a plurality of the linear motors (1) spaced laterally along the bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832354.8A CN111875238B (en) | 2020-08-18 | 2020-08-18 | Float glass tin bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832354.8A CN111875238B (en) | 2020-08-18 | 2020-08-18 | Float glass tin bath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111875238A true CN111875238A (en) | 2020-11-03 |
| CN111875238B CN111875238B (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010832354.8A Active CN111875238B (en) | 2020-08-18 | 2020-08-18 | Float glass tin bath |
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| Country | Link |
|---|---|
| CN (1) | CN111875238B (en) |
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| CN209144011U (en) * | 2018-10-18 | 2019-07-23 | 中国建材国际工程集团有限公司 | Runner glass liquid stirring device |
| WO2020153310A1 (en) * | 2019-01-21 | 2020-07-30 | Ａｇｃ株式会社 | Sheet glass production apparatus and sheet glass production method |
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|---|---|---|---|---|
| US5090987A (en) * | 1991-03-19 | 1992-02-25 | Glasstech, Inc. | Apparatus for delivering newly formed glass sheet strip |
| JP2000128552A (en) * | 1998-10-21 | 2000-05-09 | Asahi Glass Co Ltd | Process and equipment for production of glass plate |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111875238B (en) | 2022-04-19 |
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