CN111332261A - Automobile tire violence inflation equipment - Google Patents
Automobile tire violence inflation equipment Download PDFInfo
- Publication number
- CN111332261A CN111332261A CN202010325356.8A CN202010325356A CN111332261A CN 111332261 A CN111332261 A CN 111332261A CN 202010325356 A CN202010325356 A CN 202010325356A CN 111332261 A CN111332261 A CN 111332261A
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- inflation
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- 230000007246 mechanism Effects 0.000 claims abstract description 74
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 10
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 230000009194 climbing Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000010720 hydraulic oil Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
- B60S5/04—Supplying air for tyre inflation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention discloses a vehicle tyre violent inflation device, which comprises a pushing mechanism, wherein the pushing mechanism is used for pushing a tyre from a conveying roller way to an air pressure platform, the tyre is in a flat lying shape on the conveying roller way and the air pressure platform, a wheel hub is arranged on the tyre, a violent inflation mechanism is arranged above the air pressure platform, the violent inflation mechanism comprises an inflation cover, the inflation cover is arranged above the air pressure platform, the opening of the inflation cover faces downwards to the air pressure platform, the inflation cover is matched with the tyre, the air pressure platform is arranged on a jacking mechanism, the jacking mechanism is used for jacking the air pressure platform, so that the opening of the inflation cover is abutted against an upper tyre skin of the tyre and jacks the upper tyre skin of the tyre from the wheel hub, the inflation cover, the tyre skin and the air pressure platform enclose a closed inflation space, and the inflation cover is inflated into the tyre from a gap between the wheel hub and the upper tyre skin, the structure is novel, the layout is reasonable, the operation is stable, the violent inflation function of the tire can be realized.
Description
Technical Field
The invention relates to the field of inflation, in particular to an automobile tire violent inflation device.
Background
The tire industry is the upstream industry of automobiles, the rapid development of the domestic automobile industry brings an uncommon development opportunity to the hub industry in recent years, the hub detection is an important link in the hub manufacturing process, but the hub production of the existing known automobile wheel manufacturer mostly adopts manual or semi-automatic inflation. And many truck tires have very high target inflation pressures, large tires and heavy weight. The old production mode, artifical intensity of labour is high, and is efficient, and factor of safety is very low, can't fill the pressure more than 9bar under many situations.
Disclosure of Invention
The invention provides automobile tire violent inflation equipment which comprises a pushing mechanism, wherein the pushing mechanism is used for pushing a tire from a conveying roller way to an air pressure platform, the tire is in a flat lying shape on the conveying roller way and the air pressure platform, a wheel hub is arranged on the tire, a violent inflation mechanism is arranged above the air pressure platform and comprises an inflation cover, the inflation cover is arranged above the air pressure platform, the opening of the inflation cover faces downwards to the air pressure platform, the inflation cover is matched with the tire, the air pressure platform is arranged on a jacking mechanism, the jacking mechanism is used for jacking the air pressure platform, so that the opening of the inflation cover abuts against the upper tire casing of the tire and jacks the upper tire casing of the tire from the wheel hub, a closed inflation space is defined by the inflation cover, the tire casing and the air pressure platform, and the air in the inflation cover is inflated into a gap between the wheel hub and the upper tire casing.
Preferably: the jacking mechanism comprises a cylinder, the cylinder is arranged below the air pressure platform and is arranged vertically, a fixed end of the cylinder is installed on the rack, and a movable end of the cylinder is installed on the air pressure platform.
Preferably: the cover opening of the inflatable cover is round.
Preferably: the violent inflation mechanism also comprises an air storage tank which is connected with the inflation cover through a pipeline and a control valve.
Preferably: still including centering the mechanism, centering the mechanism and including toper buddhist nun tap and lifting unit, toper buddhist nun tap sets up in aerifing the cover, and toper buddhist nun tap's conical head is down, and push mechanism pushes the tire back on the atmospheric pressure platform, and lifting unit orders about toper buddhist nun tap and descends, and toper buddhist nun head joint realizes fixing a position in wheel hub center mounting hole.
Preferably: the hydraulic locking mechanism comprises a hydraulic cylinder, the hydraulic cylinder is arranged at the lower end of the air pressure platform and is vertically arranged, the fixed end of the hydraulic cylinder is installed on the frame, the movable end of the hydraulic cylinder is installed on the air pressure platform, and the two hydraulic cavities in the hydraulic cylinder are communicated with each other through a control valve and a pipeline respectively.
Preferably: the propelling movement mechanism includes clamping component and flexible subassembly, and clamping component installs on flexible end of flexible subassembly, and clamping component is used for pressing from both sides tight tire, and flexible subassembly is used for ordering about clamping component to stretch out and draw back towards the atmospheric pressure platform direction, realizes with tire propelling movement to the atmospheric pressure platform on.
Preferably: the clamping assembly comprises two groups of clamping arm assemblies, the two groups of clamping arm assemblies are arranged on two sides of the conveying roller way respectively, the clamping arm assemblies comprise two clamping arms with the same structure, the two clamping arms are distributed in an included angle shape, the two clamping arms are rotatably arranged near one end and can rotate around the straight line perpendicular to the air pressure platform, the two clamping arms are connected with the driving assembly, the driving assembly is used for driving the two clamping arms to rotate so that the two clamping arms are close to or far away from each other, and clamping and releasing of tires are achieved.
Preferably: the telescopic assembly comprises a guide rail, a rodless cylinder and a moving frame which are assembled in a sliding mode, the guide rail and the rodless cylinder are fixed on the rack, the guide rail and the rodless cylinder are arranged along the conveying direction of the roller way, the rodless cylinder pushes the moving frame to achieve telescopic motion, a power unit is arranged on the moving frame and comprises a cylinder and a gear, two clamping arm assemblies are arranged on the moving frame, the gear is arranged at the tail ends of the two clamping arms, the two gears are meshed, and the cylinder drives the gear to rotate to achieve the functions of opening and holding tightly of the clamping arms.
Preferably: the lifting assembly comprises a cylinder, the cylinder is vertically arranged, the fixed end of the cylinder is installed on the frame, the movable end of the cylinder extends into the inflatable cover and is connected with the conical nylon head, and the movable end of the cylinder is connected with the inflatable cover through a sealing assembly.
The invention has the technical effects and advantages that: the tire inflation device is novel in structure, reasonable in layout, stable in operation, capable of achieving the violent inflation function of the tire, long in inflation time, high in inflation efficiency, high in inflation pressure and high in inflation precision, saves manpower resources and reduces labor intensity.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic rear oblique view of the present invention.
FIG. 3 is a schematic cross-sectional view of the present invention.
Fig. 4 is a schematic structural diagram of the violent inflation mechanism of the present invention.
Fig. 5 is a schematic structural diagram of the pneumatic platform, the jacking mechanism and the hydraulic locking mechanism of the invention.
FIG. 6 is a schematic structural diagram of the air pressure platform and the jacking mechanism of the present invention.
Fig. 7 is a schematic structural view of the hydraulic lock mechanism of the present invention.
Fig. 8 is a schematic view of a separation structure of the pushing mechanism and the conveying roller way.
Fig. 9 is a schematic view of an assembly structure of the pushing mechanism and the conveying roller way.
FIG. 10 is a schematic view of the centering mechanism of the present invention.
Description of reference numerals: 100-roller conveyor, 200-pushing mechanism, 210-guide rail, 220-moving frame, 230-driving assembly, 240-clamping arm assembly, 241-clamping arm, 300-pneumatic platform, 400-centering mechanism, 410-conical nylon tap, 420-lifting assembly, 500-violent inflation mechanism, 510-inflation cover, 520-air outlet tank, 600-tire, 700-jacking mechanism, 710-air cylinder, 800-hydraulic locking mechanism and 810-hydraulic cylinder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Example 1
Referring to fig. 1-10, in the present embodiment, there is provided an automobile tire forced inflation apparatus, which includes a pushing mechanism 200, the pushing mechanism 200 is used to push a tire 600 from a roller conveyor 100 to an air pressure platform 300, the tire 600 is in a flat lying shape on both the roller conveyor 100 and the air pressure platform 300, a hub is mounted on the tire 600, a forced inflation mechanism 500 is mounted above the air pressure platform 300, the forced inflation mechanism 500 includes an inflation cover 510, the inflation cover 510 is disposed above the air pressure platform 300, the opening of the inflation cover 510 is directed downward toward the air pressure platform 300, the inflation cover 510 is matched with the tire 600, the air pressure platform 300 is mounted on a lifting mechanism 700, the lifting mechanism 700 is used to lift the air pressure platform 300, so that the opening of the inflation cover 510 abuts against the tire skin on the tire 600 and pushes the tire skin on the tire 600 off the hub, the inflation cover 510, the tire skin of the tire 600 and the air pressure platform 300 enclose a closed inflation space, the air in the air dome 510 is filled into the tire 600 from the space between the hub and the upper skin.
The function of conveying tires is realized through the arrangement of the conveying roller way 100, the tires are pushed onto the air pressure platform 300 from the conveying roller way 100 through the arrangement of the pushing mechanism 200, the air pressure platform 300 is lifted upwards through the arrangement of the lifting mechanism 700, the tires 600 are driven to be lifted upwards synchronously, in the lifting process of the tires, the tires are abutted against the cover openings of the inflating cover 510, the upper tire skins of the tires 600 are lifted from the wheel hubs, the lower tire skins of the tires 600 are tightly attached to the table top of the air pressure platform 300, so that the inflating cover 510, the tire skins of the tires 600 and the air pressure platform 300 are enclosed to form a closed inflating space, the inflating mechanism inflates the inflating cover 510, the gas in the inflating cover 510 is quickly inflated into the tires, the inflating function is realized, in the inflating process, the lower tire skins of the tires 600 are tightly pressed on the table top of the air pressure platform by the air pressure, and generally only one tire needs to be inflated for 3-5 seconds, after the inflation is finished, the jacking mechanism 700 drives the air pressure platform 300 and the tire 600 to move downwards, the tire skin on the tire 600 is attached to the wheel hub again under the action of the air pressure, the air in the inflatable cover 510 is exhausted, then the pushing mechanism 600 continues to push the inflated tire forwards to the roller conveyor 100, and the roller conveyor 100 conveys the inflated tire to the next procedure.
The jacking mechanism 700 comprises an air cylinder 710, the air cylinder 710 is arranged below the air pressure platform 300, the air cylinder 710 is vertically arranged, the fixed end of the air cylinder 710 is installed on the frame, and the movable end of the air cylinder 710 is installed on the air pressure platform 300.
The opening of the inflatable cover 510 is circular.
Through the setting of the circular cover mouth of cover 510 that aerifys, realize with the matching of circular tire 600, can form good cooperation with tire 600 for tire 600 goes up the child skin and breaks away from simultaneously laminating, guarantees the stability of inflating work and goes on.
The violent inflation mechanism 500 also includes an air reservoir 520, and the air reservoir 520 is connected to the inflatable dome 510 via piping and a control valve.
The function of filling high-pressure gas into the inflatable cover 510 is realized through the arrangement of the gas storage tank 520, the pipeline and the control valve.
The tire pressure centering device further comprises a centering mechanism 400, wherein the centering mechanism 400 comprises a conical damping faucet 410 and a lifting assembly 420, the conical damping faucet 410 is arranged in the air inflation cover 510, the conical head of the conical damping faucet 410 faces downwards, after the tire 600 is pushed onto the air pressure platform 300 by the pushing mechanism 200, the lifting assembly 420 drives the conical damping faucet 410 to descend, and the conical damping faucet 410 is clamped in the central mounting hole of the wheel hub to achieve positioning.
Through the setting of centering mechanism 400, realize the location to tire 600 for aerify the cooperation tire that leans on that cover 510 can be accurate, push mechanism 200 with tire 600 propelling movement to air pressure platform 300 on the back, lift assembly 420 orders about toper buddhist nun tap 410 and descends, toper buddhist nun tap 410 joint in wheel hub center mounting hole, climbing mechanism 700 jacking air pressure platform 300, toper buddhist nun tap 410 is along with rising, guarantees that the tire rigidity.
The hydraulic locking mechanism 800 comprises a hydraulic cylinder 810, the hydraulic cylinder 810 is arranged at the lower end of the pneumatic platform 300, the hydraulic cylinder 810 is vertically arranged, the fixed end of the hydraulic cylinder 810 is installed on the rack, the movable end of the hydraulic cylinder 810 is installed on the pneumatic platform 300, and two hydraulic cavities in the hydraulic cylinder 810 are communicated with each other through a control valve and a pipeline respectively.
Because the jacking mechanism 700 is powered by the air cylinder and has compressibility, when the inflatable cover 510 is inflated at high pressure, the air pressure platform is unstable, the hydraulic locking mechanism 800 and the jacking mechanism 700 need to be matched for use through the arrangement of the hydraulic locking mechanism 800, and the hydraulic locking mechanism 800 does not have power for ascending and descending. The lifting and descending are powered by the jacking mechanism 700, the hydraulic locking mechanism 800 only plays a locking role, because the hydraulic locking mechanism is a hydraulic oil cylinder 810, hydraulic oil is filled in the hydraulic oil cylinder, the hydraulic oil is incompressible, when the jacking air pressure platform 300 reaches a target position, pipelines which are communicated with the upper cavity and the lower cavity around the hydraulic oil cylinder 810 are all cut off by valves on the pipelines instantly, so that the upper cavity and the lower cavity are completely isolated to form an independent closed space, the hydraulic oil is filled in the closed space, and the hydraulic oil can not be compressed, so that the hydraulic locking mechanism plays a good role in locking the position.
The pushing mechanism 200 comprises a clamping assembly and a telescopic assembly, the clamping assembly is mounted on the telescopic end of the telescopic assembly, the clamping assembly is used for clamping the tire 600, and the telescopic assembly is used for driving the clamping assembly to stretch and retract towards the direction of the air pressure platform 300, so that the tire 600 is pushed onto the air pressure platform 300.
The clamping assembly comprises two groups of clamping arm assemblies 240, the two groups of clamping arm assemblies 240 are respectively arranged on two sides of the conveying roller way 100, each clamping arm assembly 240 comprises two clamping arms 241 with the same structure, the two clamping arms 241 are distributed in an included angle shape, the two clamping arms 241 are close to one end to be rotatably installed, the two clamping arms 241 can rotate around a straight line perpendicular to the air pressure platform 300, the two clamping arms 241 are connected with the driving assembly 230, the driving assembly 230 is used for driving the two clamping arms 241 to rotate so that the two clamping arms 241 are close to or far away from each other, and clamping and releasing of the tire 600 are achieved.
The telescopic assembly comprises a guide rail 210 assembled in a sliding mode, a rodless cylinder and a moving frame 220, the guide rail 210 and the rodless cylinder are fixed on the rack, the guide rail 210 and the rodless cylinder are arranged along the 100 direction of roller way conveying, the rodless cylinder pushes the moving frame to achieve telescopic motion, a power unit is arranged on the moving frame 220 and comprises a cylinder and a gear, the two clamping arm assemblies are arranged on the moving frame, the gear is arranged at the tail ends of the two clamping arms 241, the two gears are meshed, and the cylinder drives the gear to rotate so as to achieve the functions of opening and holding the two clamping arms 241 tightly.
Through the setting of centre gripping arm 241, realize the spacing centre gripping to tire 600, setting through flexible subassembly realizes the function of propelling movement tire, and through the setting of cylinder and gear, the cylinder promotes a centre gripping arm and rotates, through gear engagement, drives another centre gripping arm synchronous motion, realizes opening or the function of holding tightly.
The lifting assembly 420 comprises a cylinder, the cylinder is vertically arranged, the fixed end of the cylinder is mounted on the frame, the movable end of the cylinder extends into the inflatable cover 510 to be connected with the conical nylon tap 410, and the movable end of the cylinder is connected with the inflatable cover 510 through a sealing assembly.
The tire inflation device is novel in structure, reasonable in layout, stable in operation, capable of achieving the violent inflation function of the tire, long in inflation time, high in inflation efficiency, high in inflation pressure and high in inflation precision, saves manpower resources and reduces labor intensity.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.
Claims (10)
1. An automobile tire forced inflation device, characterized in that: the pneumatic tire lifting device comprises a pushing mechanism (200), wherein the pushing mechanism (200) is used for pushing a tire (600) onto an air pressure platform (300) from a conveying roller way (100), the tire (600) is in a flat lying shape on the conveying roller way (100) and the air pressure platform (300), a wheel hub is arranged on the tire (600), a violent inflation mechanism (500) is arranged above the air pressure platform (300), the violent inflation mechanism (500) comprises an inflation cover (510), the inflation cover (510) is arranged above the air pressure platform (300), the opening of the inflation cover (510) points to the air pressure platform (300) downwards, the inflation cover (510) is matched with the tire (600), the air pressure platform (300) is arranged on a jacking mechanism (700), the jacking mechanism (700) is used for jacking the air pressure platform (300), so that the opening of the inflation cover (510) abuts against the tire skin of the tire (600) and jacks the tire skin of the tire (600) from the wheel hub, and the inflation cover (510), The tire (600) and the air pressure platform (300) are enclosed into a closed inflation space, and air in the inflation cover (510) is inflated into the tire (600) from a gap between the hub and the upper tire casing.
2. The vehicle tire inflation apparatus of claim 1, wherein: climbing mechanism (700) include cylinder (710), and cylinder (710) set up in atmospheric pressure platform (300) below, and cylinder (710) are vertical to be arranged, and cylinder (710) stiff end is installed in the frame, and cylinder (710) expansion end is installed on atmospheric pressure platform (300).
3. The vehicle tire inflation apparatus of claim 1, wherein: the cover opening of the inflatable cover (510) is circular.
4. The vehicle tire inflation apparatus of claim 3, wherein: the violent inflation mechanism (500) further comprises an air storage tank (520), and the air storage tank (520) is connected with the inflation cover (510) through a pipeline and a control valve.
5. The vehicle tire inflation apparatus of claim 1, wherein: the tire inflation positioning device is characterized by further comprising a centering mechanism (400), wherein the centering mechanism (400) comprises a conical damping faucet (410) and a lifting assembly (420), the conical damping faucet (410) is arranged in the inflation cover (510), the conical head of the conical damping faucet (410) faces downwards, after the tire (600) is pushed onto the air pressure platform (300) by the pushing mechanism (200), the lifting assembly (420) drives the conical damping faucet (410) to descend, and the conical damping faucet (410) is clamped in a central mounting hole of the wheel hub to achieve positioning.
6. The vehicle tire inflation apparatus of claim 2, wherein: the hydraulic locking mechanism (800) comprises a hydraulic cylinder (810), the hydraulic cylinder (810) is arranged at the lower end of the pneumatic platform (300), the hydraulic cylinder (810) is vertically arranged, the fixed end of the hydraulic cylinder (810) is installed on the rack, the movable end of the hydraulic cylinder (810) is installed on the pneumatic platform (300), and two hydraulic cavities in the hydraulic cylinder (810) are communicated with each other through a control valve and a pipeline respectively.
7. The vehicle tire inflation apparatus of claim 1, wherein: push mechanism (200) are including clamping components and flexible subassembly, and clamping components installs on flexible end of flexible subassembly, and clamping components is used for pressing from both sides tight tire (600), and flexible subassembly is used for driving clamping components and stretches out and draws back towards air pressure platform (300) direction, realizes pushing away tire (600) to air pressure platform (300).
8. The vehicle tire inflation apparatus of claim 7, wherein: the clamping assembly comprises two groups of clamping arm assemblies (240), the two groups of clamping arm assemblies (240) are arranged on two sides of the conveying roller way (100) respectively, each clamping arm assembly (240) comprises two clamping arms (241) with the same structure, the two clamping arms (241) are distributed in an included angle shape, the two clamping arms (241) are close to one end and rotatably installed, the two clamping arms (241) can rotate around a straight line perpendicular to the air pressure platform (300), the two clamping arms (241) are connected with the driving assembly (230), the driving assembly (230) is used for driving the two clamping arms (241) to rotate so that the two clamping arms (241) are close to or far away from each other, and clamping and releasing of the tire (600) are achieved.
9. The vehicle tire inflation apparatus of claim 8, wherein: the telescopic assembly comprises a guide rail (210) assembled in a sliding mode, a rodless cylinder and a moving frame (220), the guide rail (210) and the rodless cylinder are fixed to the rack, the guide rail (210) and the rodless cylinder are arranged along the direction of roller way conveying (100), the rodless cylinder pushes the moving frame to achieve telescopic motion, a power unit is arranged on the moving frame (220), the power unit comprises a cylinder and a gear, two clamping arm assemblies are installed on the moving frame, the gear is installed at the tail ends of the two clamping arms (241), the two gears are meshed, and the cylinder orders about the gear to rotate so as to achieve the functions of opening and holding tightly of the two clamping arms (241).
10. The vehicle tire inflation apparatus of claim 5, wherein: the lifting assembly (420) comprises an air cylinder, the air cylinder is vertically arranged, the fixed end of the air cylinder is installed on the rack, the movable end of the air cylinder extends into the inflatable cover (510) to be connected with the conical nylon tap (410), and the movable end of the air cylinder is connected with the inflatable cover (510) through a sealing assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010325356.8A CN111332261A (en) | 2020-04-23 | 2020-04-23 | Automobile tire violence inflation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010325356.8A CN111332261A (en) | 2020-04-23 | 2020-04-23 | Automobile tire violence inflation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111332261A true CN111332261A (en) | 2020-06-26 |
Family
ID=71177346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010325356.8A Pending CN111332261A (en) | 2020-04-23 | 2020-04-23 | Automobile tire violence inflation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111332261A (en) |
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2020
- 2020-04-23 CN CN202010325356.8A patent/CN111332261A/en active Pending
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