CN113005939A - Anti-aging road cone, manufacturing process and manufacturing equipment - Google Patents
Anti-aging road cone, manufacturing process and manufacturing equipment Download PDFInfo
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- CN113005939A CN113005939A CN202110292896.5A CN202110292896A CN113005939A CN 113005939 A CN113005939 A CN 113005939A CN 202110292896 A CN202110292896 A CN 202110292896A CN 113005939 A CN113005939 A CN 113005939A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
- E01F9/654—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection in the form of three-dimensional bodies, e.g. cones; capable of assuming three-dimensional form, e.g. by inflation or erection to form a geometric body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
- B29C45/1808—Feeding measured doses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/615—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings illuminated
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/688—Free-standing bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
- B29C2045/0006—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements the fibres being oriented in a direction perpendicular to the flow direction of the moulding material into the mould
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Road Repair (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses an anti-aging road cone which comprises a cone cylinder and a base, wherein the cone cylinder and the base are mutually inserted and in interference fit, ceramic coatings with different thicknesses are sprayed on the surface of the cone cylinder in different areas, and the ceramic coatings with different thicknesses present different light reflecting areas on the surface of the cone cylinder; the material of the cone barrel comprises: PA6 resin, alumina, boron carbide, andalusite and glass fiber mesh cloth. The invention has the beneficial effects that: in addition, the plug-in type base is adopted, so that the mounting is convenient, the conical cylinder is more convenient to replace, and the integral service life of the conical cylinder is prolonged; in addition, the ceramic film is plated on the surface of the conical cylinder, the ceramic film has certain light reflecting performance, and ceramic films with different thicknesses are formed on the surface of the conical cylinder by utilizing the characteristic so as to realize light reflecting areas with different degrees.
Description
Technical Field
The invention relates to the field of road cones, in particular to an anti-aging road cone, a manufacturing process and manufacturing equipment.
Background
The road cone is also called a roadblock and is used for being placed in the middle of a road, in dangerous areas, on construction road sections of the road and the like to temporarily separate traffic flows and guide traffic, and the road cone also plays a role in reminding a driver.
Aging is a common defect of the road cone, and the main cause of aging is that the road cone is affected by heat, oxygen, water and light lamp environment factors, so that the road cone changes into hard, sticky, brittle, discolored, strength lost and the like.
Disclosure of Invention
The invention aims to provide an anti-aging road cone and a manufacturing process thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
an anti-aging road cone comprises a cone and a base, wherein the cone and the base are inserted into each other and are in interference fit, ceramic coatings with different thicknesses are sprayed on the surface of the cone in different areas, and the ceramic coatings with different thicknesses present different light reflecting areas on the surface of the cone;
the material of the cone barrel comprises: PA6 resin, alumina, boron carbide, andalusite and glass fiber mesh cloth.
Preferably, the bottom surface of the base is of a downwardly convex arc structure. The part is provided with a balancing weight to ensure that the whole gravity center is gathered at the part, which is similar to a tumbler structure.
Preferably, a focusing layer is arranged on the outer side of the ceramic coating with the deep surface thickness of the conical cylinder, and the focusing layer is glass beads.
Preferably, the base is made of plastic steel material, the base is in a conical structure, and the middle part of the outer peripheral surface of the base bulges outwards.
Preferably, the outer surface of base and awl section of thick bamboo all sets up the through-hole that link up, and when the base mounting was on a awl section of thick bamboo, the through-hole coincidence of both matches each other.
Preferably, 1, preparing raw materials; the raw materials comprise PA6 resin, alumina, boron carbide, andalusite and glass fiber mesh cloth, wherein the plastic particles, the alumina, the boron carbide and the andalusite are put into a feeding channel of an injection molding machine according to the weight ratio of 15:2:3: 6;
2. laying glass fiber mesh cloth in an injection mold from top to bottom along the direction of a transverse section;
3. injection molding the conical cylinder, and outputting after cooling;
4. spraying;
5. and inserting the base.
Preferably, a transfer chain for carrying the awl section of thick bamboo, the first case of breathing in that sets up at the material loading manipulator and the unloading manipulator of transfer chain one side and set up along the transfer chain: the cone cylinder is used for cooling the just input material; a first spray tank; the ceramic coating spraying device is used for uniformly spraying a ceramic film on the whole cone; a second cooling tank: a ceramic membrane for cooling the first pass; a second spraying box: the ceramic coating is used for spraying a second ceramic film on a specific area of the conical cylinder and spraying glass beads on the position;
the automatic feeding device also comprises an extracting mechanism for feeding the base, and when the extracting mechanism extracts the base to a specific position, the blanking manipulator sleeves the conical cylinder on the base.
Preferably, the conveying line is a chain type conveying line, a base is fixedly mounted on the upper portion of a chain of the chain type conveying line, a sleeve rod is rotatably connected onto the base, a small chain wheel is fixedly mounted on the sleeve rod, small chain wheels capable of being meshed with the small chain wheels are mounted in the first cooling box, the second cooling box, the first spraying box and the second spraying box, and the small chain wheels are driven to rotate by the small chain wheels.
Preferably, the bottom interval fixed mounting of chain has the guide pillar, is close to the chain bottom that is located in unloading manipulator and is provided with the pivot, sets up the guide slot that sets up along the axis direction on the global of pivot, and the chain is when the transmission, and the guide pillar gets into the guide slot, and the pivot is rotatory, and the tip of pivot is provided with carries the charging tray, and fixed mounting has the extractor that is used for snatching the base on carrying the terminal surface of charging tray.
Compared with the prior art, the invention has the beneficial effects that: in addition, the plug-in type base is adopted, so that the mounting is convenient, the conical cylinder is more convenient to replace, and the integral service life of the conical cylinder is prolonged;
in addition, the surface of the cone is plated with a ceramic film, the ceramic film has certain light reflecting performance, the ceramic film with different thicknesses is formed on the surface of the cone by utilizing the characteristic so as to realize light reflecting areas with different degrees, and the ceramic film has good chemical stability, acid and alkali resistance and high temperature resistance on the surface of the cone and also has certain hardness, thereby meeting the outdoor use conditions of the road cone.
Drawings
Fig. 1 is a schematic cross-sectional view of the road cone of the present invention.
FIG. 2 is a schematic view of a base structure according to the present invention.
Fig. 3 is a schematic view of a spraying assembly line in the road cone production equipment.
Fig. 4 is a schematic view of the structure of the conveyor chain of the present invention.
FIG. 5 is a schematic view of the connection between the chain and the base pick-up mechanism of the present invention.
Fig. 6 is a schematic structural diagram of the base extraction mechanism of the present invention.
FIG. 7 is a schematic view of the mechanism for driving the cone to rotate in the spraying tank or the primary cooling tank of the present invention.
FIG. 8 is a schematic view of the surface of a cone after spraying according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): referring to fig. 1 and 8, an anti-aging road cone comprises a cone 01 and a base 02, wherein the cone 01 and the base 02 are inserted into each other and are in interference fit with each other, ceramic coatings with different thicknesses are sprayed on the surface of the cone 01 in different areas, and the ceramic coatings with different thicknesses present different light reflecting areas on the surface of the cone 01. The ceramic coating has stable chemical properties, can play a role of protection on the surface of the cone cylinder 01, has certain light reflection performance, and presents a light reflection surface (shown as A, B in the figure) with visual perception on the surface of the cone cylinder 01 through coatings with different thicknesses, and can form a warning pattern on the surface of the road cone or a simple light reflection warning effect by utilizing the characteristic.
It is worth mentioning that a focusing layer is arranged on the outer side of the ceramic coating with the deep surface thickness of the cone 01, the focusing layer is glass beads, the light reflection effect is improved through the glass beads, the light reflection dispersity is higher, and observation at different positions is facilitated.
The structure of base 02 refers to fig. 2, and the constant head tank 022 that distributes about having seted up on its global, has seted up through-hole 024 in the constant head tank 022, can inwards extend on the inner wall of awl section of thick bamboo 01 with constant head tank 022 complex rib, set up the hole relative with the through-hole on the rib, this hole can be used to install the lamp area. In addition, the upper end of the base 02 may be formed with a fixing groove 023 which is cross-shaped and penetrates downward. For securing wiring harnesses or additional equipment. The mountable lamp area during the use exposes the lamp on the lamp area through-hole 024, plays the effect of warning. When the base 02 is placed, a balancing weight 021 can be fixed on the bottom surface of the base 02, the bottom surface of the balancing weight is of an arc-shaped structure, the center of gravity can be gathered at the bottom surface, and the effect of a tumbler structure is achieved
In addition, the cone 01 itself comprises the following components: PA6 resin, alumina, boron carbide, andalusite and glass fiber mesh cloth.
The preparation method comprises the following steps:
1. preparing raw materials; the raw materials comprise PA6 resin, alumina, boron carbide, andalusite and glass fiber mesh cloth, wherein the plastic particles, the alumina, the boron carbide and the andalusite are put into a feeding channel of an injection molding machine according to the weight ratio of 15:2:3: 6; in production, the addition of alumina, boron carbide and andalusite materials for forming obviously enhances the wear resistance, impact resistance and high-temperature resistance of the product, and the formed product has high density, the relative density is about 90, and the foaming and cracking probability is lower than 1 percent during demoulding. In addition, the bonding capability of the surface of the molded product and the ceramic membrane is improved, and the molded product is not easy to fall off. In a production test, the ceramic membrane is continuously dropped from a 3-meter high-slope table for more than one hundred twenty times without falling off.
2. Laying glass fiber mesh cloth in an injection mold from top to bottom along the direction of a transverse section; the fiberglass mesh cloth not only strengthens the internal connection stability, but also has the effect of heat resistance on the transverse section. The awl section of thick bamboo 01 is in normal use, and the temperature of two tip can be higher relatively some, but the thermal diffusivity of tip also can be superior to the middle part, adopts glass fiber net check cloth to play certain barrier effect to the heat of tip, prevents when using, with too high temperature conduction to middle part, causes the middle part to be heated and softens, and support performance descends.
3. The conical cylinder 01 is subjected to injection molding and is output after being cooled;
4. spraying;
5. the base 02 is inserted.
The spraying and inserting base 02 are completed by the same production line, and as shown in fig. 3, the conveying line 2 for conveying the cone cylinder 01, the feeding manipulator and the discharging manipulator arranged on one side of the conveying line 2, and the first air suction box arranged along the conveying line 2: a cone 01 for cooling the just input; a first spray booth 4; the ceramic spraying device is used for uniformly spraying a ceramic film on the whole conical cylinder 01; second cooling tank 6: a ceramic membrane for cooling the first pass; second spraying case 7: the ceramic coating is used for spraying a second ceramic film on a specific area of the conical cylinder 01 and spraying glass beads on the position;
the conveying line 2 is a chain type conveying line 2, a base 25 is fixedly arranged at the upper part of a chain 21 of the conveying line 2, a loop bar 22 is rotatably connected to the base 25, and a small chain wheel 23 is fixedly arranged on the loop bar 22;
referring to fig. 7, a small chain 231 engageable with the small sprocket 23 is attached to each of the first cooling tank 5, the second cooling tank 6, the first painting tank 4, and the second painting tank 7, and the small sprocket 23 is driven to rotate by the small chain 231. When the transport line 2 carrying the tapered cylinder 01 passes through this position, the small chain 231 drives the small sprocket 23, the base 25 rotates, and the tapered cylinder 01 also rotates. The uniformity of spraying or cooling is ensured.
The automatic feeding device further comprises an extracting mechanism 9 used for feeding the base 02, and when the extracting mechanism 9 extracts the base 02 to a specific position, the blanking manipulator sleeves the conical cylinder 01 on the base 02.
The extraction mechanism 9 is linked with the chain type conveying line 2; referring to fig. 4-6, the guide posts 24 are fixedly installed at the bottom of the chain at intervals, the rotating shaft 91 is installed at the bottom of the chain close to the blanking manipulator, the guide grooves 92 arranged along the axial direction are formed in the circumferential surface of the rotating shaft 91, the guide posts 24 enter the guide grooves 92 during transmission of the chain, the rotating shaft 91 rotates, the material lifting disc 93 is installed at the end of the rotating shaft 91, and the extractor 94 (such as a manipulator or a suction cup) for grabbing the base 02 is fixedly installed on the end surface of the material lifting disc 93.
With reference to fig. 6, the design of the guide groove 92 and the guide post 24 requires reference to the operation mode of the conveyor line 2, in this embodiment, the spraying line is an intermittent conveying mode, i.e., one end is conveyed and then is intermittent for a certain time, and the conveying is continued after the spraying of one cone 01 is completed. During conveying, the first guide post 24 pushes the rotating shaft 91 to rotate 90 degrees in the guide groove 92, the extractor 94 rotates the inverted base 02 which is inverted in the material box 8 to face upwards, the intermittent section stops rotating, at the moment, the cone cylinder 01 is inserted, the extractor 94 loosens the base 02, and the assembled road cone is transferred away. After the pause, the guide post 24 pushes the rotating shaft 91 to rotate 90 degrees again (forward rotation or reverse rotation), the extractor 94 reaches the initial state, and then the base 02 is grabbed again for assembly in the next stage.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides an ageing-resistant way awl, includes a awl section of thick bamboo and base, its characterized in that: the conical cylinder and the base are mutually inserted and in interference fit, ceramic coatings with different thicknesses are sprayed on the surface of the conical cylinder in different areas, and the ceramic coatings with different thicknesses present different light reflecting areas on the surface of the conical cylinder;
the material of the cone barrel comprises: PA6 resin, alumina, boron carbide, andalusite and glass fiber mesh cloth.
2. The aging-resistant road cone and the manufacturing process thereof as claimed in claim 1, wherein: the bottom surface of the base is of an arc structure protruding downwards.
3. The aging-resistant road cone and the manufacturing process thereof as claimed in claim 2, wherein: and a focusing layer is arranged on the outer side of the ceramic coating with deep surface thickness of the conical cylinder, and is glass beads.
4. The aging-resistant road cone and the manufacturing process thereof as claimed in claim 1, wherein: the base is made of plastic steel material and is in a conical structure, and the middle part of the peripheral surface of the base bulges outwards.
5. The aging-resistant road cone and the manufacturing process thereof as claimed in claim 4, wherein: the base all sets up the through-hole that link up with the surface of awl section of thick bamboo, and when the pedestal mounting was on a awl section of thick bamboo, the through-hole coincidence of the two matches each other.
6. A process for manufacturing an anti-aging road cone is characterized by comprising the following steps: 1. preparing raw materials; the raw materials comprise PA6 resin, alumina, boron carbide, andalusite and glass fiber mesh cloth, wherein the plastic particles, the alumina, the boron carbide and the andalusite are put into a feeding channel of an injection molding machine according to the weight ratio of 15:2:3: 6;
2. laying glass fiber mesh cloth in an injection mold from top to bottom along the direction of a transverse section;
3. injection molding the conical cylinder, and outputting after cooling;
4. spraying;
5. and inserting the base.
7. The utility model provides an ageing-resistant way awl manufacture equipment which characterized in that: the method comprises the following steps of spraying and assembling a processing line: a first breathing case that is used for carrying the transfer chain of a awl section of thick bamboo, sets up at the material loading manipulator and the unloading manipulator of transfer chain one side and sets up along the transfer chain: the cone cylinder is used for cooling the just input material; a first spray tank; the ceramic coating spraying device is used for uniformly spraying a ceramic film on the whole cone; a second cooling tank: a ceramic membrane for cooling the first pass; a second spraying box: the ceramic coating is used for spraying a second ceramic film on a specific area of the conical cylinder and spraying glass beads on the position;
the automatic feeding device also comprises an extracting mechanism for feeding the base, and when the extracting mechanism extracts the base to a specific position, the blanking manipulator sleeves the conical cylinder on the base.
8. The aging-resistant road cone manufacturing equipment according to claim 7, wherein: the conveying line is a chain type conveying line, a base is fixedly mounted on the upper portion of a chain of the conveying line, a sleeve rod is rotatably connected onto the base, a small chain wheel is fixedly mounted on the sleeve rod, small chains capable of being meshed with the small chain wheel are mounted in the first cooling box, the second cooling box, the first spraying box and the second spraying box, and the small chain wheel is driven to rotate by the small chains.
9. The aging-resistant road cone manufacturing equipment according to claim 8, wherein: the bottom interval fixed mounting of chain has the guide pillar, and the chain bottom that is close to in unloading manipulator department is provided with the pivot, sets up the guide slot that sets up along the axis direction on the global of pivot, and the chain is when the transmission, and the guide pillar gets into the guide slot, and the pivot is rotatory, and the tip of pivot is provided with carries the charging tray, and fixed mounting has the extractor that is used for snatching the base on carrying the terminal surface of charging tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110292896.5A CN113005939B (en) | 2021-03-18 | 2021-03-18 | Anti-aging road cone, manufacturing process and manufacturing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110292896.5A CN113005939B (en) | 2021-03-18 | 2021-03-18 | Anti-aging road cone, manufacturing process and manufacturing equipment |
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| CN113005939A true CN113005939A (en) | 2021-06-22 |
| CN113005939B CN113005939B (en) | 2022-07-08 |
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