CN114481729A - Electromagnetic wave heating multifunctional maintenance vehicle for ballastless track foundation limiting groove - Google Patents
Electromagnetic wave heating multifunctional maintenance vehicle for ballastless track foundation limiting groove Download PDFInfo
- Publication number
- CN114481729A CN114481729A CN202111637291.1A CN202111637291A CN114481729A CN 114481729 A CN114481729 A CN 114481729A CN 202111637291 A CN202111637291 A CN 202111637291A CN 114481729 A CN114481729 A CN 114481729A
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- CN
- China
- Prior art keywords
- heating
- electromagnetic wave
- supporting plate
- limiting groove
- ballastless track
- Prior art date
- 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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Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 74
- 238000012423 maintenance Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000004140 cleaning Methods 0.000 claims abstract description 40
- 239000000428 dust Substances 0.000 claims abstract description 31
- 238000003860 storage Methods 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005336 cracking Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000011376 self-consolidating concrete Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B37/00—Making, maintaining, renewing, or taking-up the ballastway or the track, not provided for in a single one of groups E01B27/00 - E01B35/00
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
Abstract
The invention discloses an electromagnetic wave heating multifunctional maintenance vehicle for a limiting groove of a ballastless track foundation, which comprises a supporting plate, wherein a driving assembly and a control chamber are installed on the top surface of the supporting plate, a garbage temporary storage box is arranged on one side of the control chamber, a water tank is fixed on the garbage temporary storage box away from the control chamber, a pushing handle used for moving a heating vehicle is arranged on the other side of the control chamber, two pairs of boss wheels used for walking are symmetrically installed on two sides of the bottom surface of the supporting plate, a cleaning wheel mechanism is arranged on one side, close to the water tank, of the bottom surface of the supporting plate, a dust collection mechanism is arranged on one side, close to the center of the supporting plate, of the cleaning wheel mechanism, and a moving electromagnetic heating device is arranged on one side, away from the dust collection mechanism, of the dust collection mechanism. The mobile heating vehicle is designed, high-pressure water cleaning, garbage cleaning and electromagnetic wave heating dewatering can be carried out on the ballastless track limiting groove, working links are reduced, and engineering safety is improved.
Description
The invention relates to the field of road construction equipment, in particular to an electromagnetic wave heating multifunctional maintenance vehicle for a ballastless track foundation limiting groove.
Background
The ballastless track bed board comprises a track board, a self-compacting concrete layer, an isolation layer and the like. When the off-line engineering is completed, the settlement evaluation meets the design requirements, the evaluation is completed, and after the foundation plate is constructed, the ballastless track bed plate is organized and unfolded in time for construction. The procedures of laying an isolation layer, installing a self-compacting concrete layer steel bar welding net, roughly paving a track plate, finely adjusting the track plate and pouring self-compacting concrete are carried out in sequence according to construction.
The existing ballastless track needs to clean and clear the bed plate and the limiting groove by using clean high-pressure water and high-pressure air before the track plate is laid, and the bed plate is clean and has no abrasive particles which can damage the middle isolation layer due to sand and stone in the laying range. However, due to the characteristics of the engineering efficiency and the limiting grooves, accumulated water in the limiting grooves is difficult to clean thoroughly, and the grooves are frozen in low-temperature environments such as winter, so that the roadbed is arched and deformed, and the arching deformation causes engineering safety problems such as rail lifting, cracking of track slabs and cushion layers, deformation of road shoulders, cracking of cable grooves of lines, cracking of side slopes and the like, and seriously affects the normal operation of the lines.
Disclosure of Invention
The invention aims to solve the problem that accumulated water in a limiting groove is difficult to remove in the prior art, and provides an electromagnetic wave heating multifunctional maintenance vehicle for a basic limiting groove of a ballastless track.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multifunctional maintenance vehicle for electromagnetic wave heating of a limiting groove of a ballastless track foundation comprises a supporting plate, wherein a driving assembly and a control chamber are installed on the top surface of the supporting plate, a garbage temporary storage box is arranged on one side of the control chamber, a water tank is fixed on the side, away from the control chamber, of the garbage temporary storage box, a pushing handle for moving a heating vehicle is installed on the other side of the control chamber, two pairs of boss assemblies for walking are symmetrically installed on two sides of the bottom surface of the supporting plate, a cleaning wheel mechanism is installed on one side, close to the water tank, of the bottom surface of the supporting plate, a dust suction mechanism is arranged on one side, close to the center of the supporting plate, of the dust suction mechanism, a moving electromagnetic heating device is arranged on the side, away from the dust suction mechanism, the moving electromagnetic heating device comprises a sliding rod, a sliding groove is further formed in the side wall of the front end and the rear end of the supporting plate, the sliding rod is fixed on the inner walls of two sides of the sliding groove, and sliding blocks are respectively sleeved on two sides of the middle of the sliding rod, the side wall of one end, away from the center of the supporting plate, of the sliding block is fixedly provided with a third hydraulic rod, the output ends of the third hydraulic rod are fixedly provided with supporting blocks, two crawler rods are fixedly connected between the two supporting blocks on the same side, and heating modules are sleeved on the crawler rods.
Preferably, the cleaning wheel mechanism comprises a first hydraulic rod, the first hydraulic rod is fixed on the bottom surface of the supporting plate, a driving motor is fixed at the output end of the first hydraulic rod, a cleaning frame is fixed at the output end of the driving motor, a cleaning wheel is installed on the cleaning frame, a high-pressure water nozzle is fixedly connected above the cleaning wheel, the high-pressure water nozzle is communicated with the water tank through a water pipe, an electromagnetic valve is installed on the water pipe, and the horizontal length of the cleaning frame is greater than one half of the distance between the front side and the rear side of the supporting plate.
Preferably, the dust collection mechanism comprises a second hydraulic rod, a dust collection pump is fixedly connected to the output end of the second hydraulic rod, a telescopic corrugated pipe is connected between the output end of the dust collection pump and the input end of the temporary garbage storage box in a penetrating manner, and a dust collection hopper is fixed to the input end of the dust collection pump.
Preferably, the boss component comprises a front boss wheel and a rear boss wheel, and the front boss wheel and the rear boss wheel are arranged on two sides of the supporting plate.
Preferably, the control room, the garbage temporary storage box, the water tank and the pushing handle are all fixed on the top surface of the supporting plate.
Preferably, the slide bars are provided with two slide bars which are symmetrically distributed at the front end position and the rear end position of the support plate.
Preferably, the heating modules are all provided with a plurality of crawler belts and are slidably mounted on the crawler belt rods, each heating module comprises a clamping plate and a heating plate, a plurality of groups of coils are arranged in each heating plate, and crawler wheels are fixed between the clamping plates and the heating plates.
Compared with the prior art, the invention provides an electromagnetic wave heating multifunctional maintenance vehicle for a ballastless track foundation limiting groove, which has the following beneficial effects:
1. according to the invention, by designing the mobile heating vehicle, high-pressure water cleaning, garbage cleaning and electromagnetic heating dewatering can be carried out on the ballastless track limiting groove, so that the working links are reduced, the engineering efficiency is improved, the cleanness of the base plate in the laying range is ensured, and no sand and stone can damage abrasive particles of the intermediate isolation layer;
2. according to the invention, through the design of the movable array type heating module, the heating module can be moved and switched on and off according to the water containing conditions at different positions in the groove, the heating module is intensively heated at the zone position with more water, and the heating module is closed at the zone position without water, so that the energy is saved, and the heating efficiency is improved;
3. according to the invention, the tire and the groove structure are combined through the design of the boss wheel, the boss wheel wheelbase is controlled through hydraulic pressure to be matched with the grooves with different sizes, and water in the grooves can be completely removed, so that the engineering safety problems of rail lifting, cracking of a track plate and a cushion layer, deformation of a road shoulder, cracking of a line cable groove, cracking of a side slope and the like caused by deformation of an upper arch of a roadbed due to low-temperature icing are avoided.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a left side view of the present invention;
FIG. 4 is a right side view of the present invention;
FIG. 5 is a heating module profile of the present invention;
FIG. 6 is a schematic structural view of a heating module according to the present invention;
fig. 7 is a structural view of a heating plate of the present invention.
In the figure: the garbage cleaning machine comprises a supporting plate 1, a power and control room 2, a temporary garbage storage box 3, a water tank 4, a boss wheel 5, a cleaning wheel mechanism 6, a dust suction mechanism 7, a movable electromagnetic heating device 8, a pushing handle 9, a front boss wheel 51, a rear boss wheel 52, a first hydraulic rod 61, a cleaning wheel 62, a high-pressure water nozzle 63, a cleaning frame 64, a second hydraulic rod 71, a suction cup 72, an extension pipe 73, a sliding block 81, a sliding rod 82, a third hydraulic rod 83, a supporting block 84, a crawler rod 85, a heating block 86, a clamping plate 861, a heating plate 862 and a crawler wheel 863.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example one
Referring to fig. 1-7, the garbage heating device comprises a supporting plate 1, a driving assembly and a control chamber 2 are installed on the top surface of the supporting plate 1, a garbage temporary storage tank 3 is arranged on one side of the garbage temporary storage tank 3, a water tank 4 is fixed on one side of the garbage temporary storage tank 3 away from the control chamber 2, a push handle 9 for moving a heating vehicle is installed on the other side of the control chamber 2, two pairs of boss assemblies 5 for walking are symmetrically installed on two sides of the bottom surface of the supporting plate 1, a cleaning wheel mechanism 6 is installed on one side of the bottom surface of the supporting plate 1, which is close to the center of the supporting plate 1, a dust suction mechanism 7 is installed on one side of the dust suction mechanism 7, a mobile electromagnetic heating device 8 is installed on one side of the dust suction mechanism 7, the mobile electromagnetic heating device 8 comprises a sliding rod 82, a sliding groove is further formed in the side wall of the front end and the rear end of the supporting plate 1, the sliding rod 82 is fixed on the inner walls of two sides of the sliding groove, sliding rod 82 is sleeved with a sliding block 81, the side wall of one end, away from the center of the supporting plate 1, of the sliding block 81 is fixedly provided with a third hydraulic rod 83, the output ends of the third hydraulic rod 83 are fixedly provided with supporting blocks 84, two crawler rods 85 are fixedly connected between the two supporting blocks 84 on the same side, heating modules 86 are sleeved on the crawler rods 85, a plurality of movable heating modules 86 are sleeved on the crawler rods 85, each heating module 86 comprises a clamping plate 861 and a heating plate 862, a plurality of groups of coils are arranged in the heating plate 862, electromagnetic waves are generated after the coils are electrified, and crawler wheels 863 are fixedly arranged between the clamping plate 861 and the heating plate 862.
In this embodiment, after the cleaning operation is completed, the hydraulic rod three 83 controls the heating module 86 to descend to approach the surface of the limiting groove, electromagnetic waves generated after the heating plate 862 is electrified are used for heating, after the heating vehicle moves from one end of the limiting groove to the other end, the hydraulic rod 83 is controlled by the slider 81 to move forward to the position below the dust suction mechanism 7 for heating, meanwhile, the left and right movement of the heating module 86 can be controlled by controlling the crawler wheel 863 to rotate forward or reversely, different numbers of heating modules 86 are used for different water-containing conditions, the heating module 86 is concentrated in an area with more water content for heating, and the heating module 86 is closed in an area without water or with complete water removal, so that the purposes of saving energy and improving the heating efficiency are achieved.
Example two
Referring to fig. 2 and 3, in this embodiment, basically the same as embodiment 1, preferably, the cleaning wheel mechanism 6 includes a first hydraulic rod 61, the first hydraulic rod 61 is fixed on the support plate 1, the output end of the first hydraulic rod 61 is rotatably provided with a cleaning wheel 62, the cleaning wheel 62 can also rotate, a high-pressure water nozzle 63 is fixedly connected above the cleaning wheel 62, the high-pressure water nozzle 63 is connected with the water tank 4 through a water pipe, the water pipe is provided with an electromagnetic valve, and the horizontal length of the cleaning frame 64 is greater than one half of the distance between the front side and the rear side of the support plate.
In the embodiment, the cleaning wheel 62 is controlled by the first hydraulic rod 61 to descend, after the cleaning wheel is contacted with the ground, the electromagnetic valve is opened, the high-pressure water spray nozzle 63 sprays high-pressure water, meanwhile, the cleaning wheel 62 starts to rotate, sand and particles of the limiting groove are concentrated, the sand and the particles are subsequently treated by the dust collection mechanism 7, the cleaning wheel 62 can also rotate on the plane around the first hydraulic rod 61, so that the cleaning of the whole limiting groove plane is realized, the cleaning wheel is controlled by the first hydraulic rod 61 to ascend after the cleaning is finished, and the interference of subsequent work is avoided.
EXAMPLE III
Referring to fig. 1 and 2, in this embodiment, basically the same as embodiment 1, preferably, the dust suction mechanism includes a second hydraulic rod 71, an output end of the second hydraulic rod 71 is fixedly connected with a dust suction pump 72, an extensible bellows 73 is connected between an output end of the dust suction pump 72 and an input end of the temporary garbage storage box, and an input end of the dust suction pump is fixedly connected with a dust suction hopper.
In this embodiment, the second hydraulic rod 71 and the first hydraulic rod 61 work simultaneously, the dust collection bucket is lowered to be in contact with the surface of the groove, sand and particles concentrated by the cleaning wheel mechanism 6 are collected into the temporary garbage storage box 3 through the telescopic bellows 73 by suction, and part of water is collected at the same time, so that the workload of subsequent heating and water removal is reduced.
Example four
Referring to fig. 1 to 4, the present embodiment is substantially the same as embodiment 1, and preferably, the boss assembly 5 includes a front boss wheel 51 and a rear boss wheel 52, the front boss wheel 51 and the rear boss wheel 52 are disposed on both sides of the support plate 1, and the bearings are connected to the hydraulic rods, and the expansion and contraction are controlled by the hydraulic rods.
In this embodiment, the boss is arranged at the center of the outer side of the boss wheel 5, the bearing is connected to the output end of the hydraulic rod, and the hydraulic rod controls the telescopic change of the wheel base, so that the boss wheel is matched with the limiting grooves with different sizes, the boss wheel 5 is designed to be matched with the structure of the limiting grooves, and the boss wheel 5 is clamped on two sides of the grooves in motion to stabilize the vehicle body and the track of the heating vehicle.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (9)
1. An electromagnetic wave heating multifunctional maintenance vehicle for a ballastless track foundation limiting groove comprises a supporting plate (1), wherein a driving assembly and a control room (2) are arranged on the top surface of the supporting plate (1), it is characterized in that one side of the control room (2) is provided with a temporary garbage storage box (3), one side of the temporary garbage storage box (3) departing from the control room (2) is fixed with a water tank (4), a pushing handle (9) for moving the heating vehicle is arranged on the other side of the control chamber (2), two pairs of boss components (5) for walking are symmetrically arranged on two sides of the bottom surface of the supporting plate (1), a cleaning wheel mechanism (6) is arranged on one side of the bottom surface of the supporting plate (1) close to the water tank (4), a dust suction mechanism (7) is arranged on one side of the cleaning wheel mechanism (6) close to the center of the supporting plate (1), a movable electromagnetic heating device (8) is arranged on one side of the dust collection mechanism (7) away from the dust collection mechanism (7);
remove electromagnetic heating device (8) and include slide bar (82), the sliding tray has still been seted up to backup pad (1) front and back end lateral wall, and slide bar (82) all fix on sliding tray both sides inner wall, slide bar (82) middle part both sides all overlap and have inlayed slider (81), slider (81) deviate from backup pad (1) center one end lateral wall and all are fixed with three (83) hydraulic stems, and three (83) output of hydraulic stem all is fixed with supporting shoe (84), and the homonymy is two equal fixedly connected with two track poles (85) between supporting shoe (84), the cover has heating module (86) on track pole (85).
2. The multifunctional maintenance truck for the electromagnetic wave heating of the limiting groove of the ballastless track foundation according to claim 1, wherein the cleaning wheel mechanism (6) comprises a first hydraulic rod (61), the first hydraulic rod (61) is fixed on the bottom surface of the supporting plate (1), a driving motor is fixed at the output end of the first hydraulic rod (61), a cleaning frame (64) is fixed at the output end of the driving motor, a cleaning wheel (62) is installed on the cleaning frame (64), a high-pressure water nozzle (63) is fixedly connected above the cleaning wheel (62), the high-pressure water nozzle (63) is in through connection with the water tank (4) through a water pipe, and an electromagnetic valve is installed on the water pipe.
3. The multifunctional maintenance vehicle for the limit groove of the ballastless track foundation through electromagnetic wave heating according to claim 2, wherein the horizontal length of the cleaning frame (64) is greater than one half of the distance between the front side and the rear side of the support plate (1).
4. The multifunctional maintenance truck for the electromagnetic wave heating of the limiting groove of the ballastless track foundation according to claim 1, wherein the dust collection mechanism (7) comprises a second hydraulic rod (71), a dust collection pump (72) is fixedly connected to an output end of the second hydraulic rod (71), a telescopic corrugated pipe (73) is connected between an output end of the dust collection pump (72) and an input end of the temporary garbage storage box (3) in a penetrating manner, and a dust collection hopper is fixed to an input end of the dust collection pump (72).
5. The multifunctional maintenance vehicle for the ballastless track foundation limiting groove electromagnetic wave heating according to claim 1 or 2, wherein the boss component (5) comprises a front boss wheel (51) and a rear boss wheel (52), and the front boss wheel (51) and the rear boss wheel (52) are arranged on two sides of the support plate (1).
6. The multifunctional maintenance vehicle for the ballastless track foundation limiting groove electromagnetic wave heating according to claim 1, wherein the control room (2), the garbage temporary storage box (3), the water tank (4) and the pushing handle (9) are all fixed on the top surface of the support plate (1).
7. The multifunctional maintenance vehicle for the limiting groove of the ballastless track foundation by electromagnetic wave heating according to claim 1 or 2, wherein the two sliding rods (82) are symmetrically distributed at the front and rear ends of the support plate (1).
8. The multifunctional maintenance vehicle for the ballastless track foundation limit groove electromagnetic wave heating according to claim 1, wherein a plurality of heating modules (86) are arranged and are slidably mounted on the track rod (85).
9. The multifunctional maintenance vehicle for the electromagnetic wave heating of the ballastless track foundation limiting groove according to claim 1 or 2, wherein the heating module (86) comprises a clamping plate (861) and a heating plate (862), a plurality of groups of coils are arranged in the heating plate (862), and a track wheel (863) is fixed between the clamping plate (861) and the heating plate (862).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111637291.1A CN114481729B (en) | 2021-12-29 | 2021-12-29 | Electromagnetic wave heating multifunctional maintenance vehicle for ballastless track foundation limiting groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111637291.1A CN114481729B (en) | 2021-12-29 | 2021-12-29 | Electromagnetic wave heating multifunctional maintenance vehicle for ballastless track foundation limiting groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114481729A true CN114481729A (en) | 2022-05-13 |
| CN114481729B CN114481729B (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111637291.1A Active CN114481729B (en) | 2021-12-29 | 2021-12-29 | Electromagnetic wave heating multifunctional maintenance vehicle for ballastless track foundation limiting groove |
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| Country | Link |
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| CN (1) | CN114481729B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990008387U (en) * | 1997-08-02 | 1999-03-05 | 전주범 | Subway cleaning vehicle |
| DE102012025598A1 (en) * | 2012-02-21 | 2013-05-29 | Scherer Metallbearbeitungs GmbH | Broaching machine for removing snow and ice from road, has drying chamber that is connected with high pressure fan, and bottom surface that is dried by displacing and exhausting melt water |
| CN109235341A (en) * | 2018-09-14 | 2019-01-18 | 东莞方凡智能科技有限公司 | A kind of cruiser with cleaning purging function |
| CN213571758U (en) * | 2020-10-24 | 2021-06-29 | 四川省易和建筑工程有限公司 | Road surface drying device is used in road engineering construction |
-
2021
- 2021-12-29 CN CN202111637291.1A patent/CN114481729B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990008387U (en) * | 1997-08-02 | 1999-03-05 | 전주범 | Subway cleaning vehicle |
| DE102012025598A1 (en) * | 2012-02-21 | 2013-05-29 | Scherer Metallbearbeitungs GmbH | Broaching machine for removing snow and ice from road, has drying chamber that is connected with high pressure fan, and bottom surface that is dried by displacing and exhausting melt water |
| CN109235341A (en) * | 2018-09-14 | 2019-01-18 | 东莞方凡智能科技有限公司 | A kind of cruiser with cleaning purging function |
| CN213571758U (en) * | 2020-10-24 | 2021-06-29 | 四川省易和建筑工程有限公司 | Road surface drying device is used in road engineering construction |
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| Publication number | Publication date |
|---|---|
| CN114481729B (en) | 2023-10-31 |
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