CN116810994A - Precast slab pouring device - Google Patents
Precast slab pouring device Download PDFInfo
- Publication number
- CN116810994A CN116810994A CN202310842359.2A CN202310842359A CN116810994A CN 116810994 A CN116810994 A CN 116810994A CN 202310842359 A CN202310842359 A CN 202310842359A CN 116810994 A CN116810994 A CN 116810994A
- Authority
- CN
- China
- Prior art keywords
- concrete
- precast slab
- pipe
- bin
- feed cylinder
- 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.)
- Pending
Links
- 238000003756 stirring Methods 0.000 claims description 14
- 238000005266 casting Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 210000002445 nipple Anatomy 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
- B28B13/0235—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities the feed box being provided with agitating means, e.g. stirring vanes to avoid premature setting of the moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
- B28B13/0245—Rotatable feed frames, e.g. horizontally rotated over 90 degrees
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The utility model relates to the technical field of precast slab processing, and particularly discloses a precast slab pouring device, which comprises a track frame and a concrete bin, wherein a row of longitudinal material conveying cylinders are arranged at the lower end of the front side surface of the concrete bin, a driving shaft is rotationally connected to the longitudinal material conveying cylinders, a discharging motor is arranged on the concrete bin, a spiral blade extending into the concrete bin is arranged on the driving shaft, a discharging swinging pipe is rotationally connected to the lower end of each longitudinal material conveying cylinder, a guide sliding column is arranged at the lower end of each discharging swinging pipe, a telescopic pushing piece is arranged on the lower surface of the concrete bin, an adjusting plate is connected to the end part of the telescopic pushing piece, and a guide sliding groove is formed in the adjusting plate; this precast slab pouring device not only reaches the effect of the even unloading of multiple spot when the row material, can also adjust the interval of unloading pendulum pipe outer end simultaneously for carry out the multiple spot simultaneously unloading again after adapting to the effective width of precast slab mould, guarantee that concrete can evenly pour in precast slab mould, effectively improved the suitability of whole device.
Description
Technical Field
The utility model relates to the technical field of prefabricated plate processing, and particularly discloses a prefabricated plate pouring device.
Background
Prefabricated panels are building panels produced in a standardized, mechanized manner in a factory. In the production and processing process of the prefabricated wallboard, the stirred concrete materials are required to be poured into a mould, and then the mould is solidified and formed, and most of the existing pouring processes of the prefabricated components adopt manual pouring, namely, operators pour the concrete into the mould through a container, then the concrete is flattened by using a scraping plate or other tools, and high-frequency vibration is applied to the mould after the concrete is flattened so as to realize self-compaction of the concrete. The traditional manual pouring mode is high in labor intensity and low in operation efficiency, and high-efficiency production of precast slabs is severely limited.
The utility model patent with the application number of 202121161847X discloses a precast slab concrete pouring device, which comprises a concrete containing box, a supporting frame for supporting the concrete containing box, a movable sliding rail for facilitating the movement of the concrete pouring device, a plurality of precast slab bearing tables arranged at two sides of the movable sliding rail and used for placing a mould, and a concrete conveying device arranged under the concrete containing box and used for conveying concrete into the mould. This precast slab concrete pouring device is carrying out precast slab concrete pouring in-process, through remove the support frame along the removal slide rail to corresponding precast slab plummer department, then utilize concrete conveying device to pour the concrete material that arranges down in the concrete holding case in the mould on the precast slab plummer, it compares in current manual work mode of carrying out concrete pouring, reduced operating personnel's intensity of labour, improved the operating efficiency, but this precast slab concrete pouring device only can pour the mould with concrete fixed point, and general precast slab area is great, still need carry out the manual work after in the mould after the concrete pouring and catch up with it, catch up with the hindrance of steel bar frame in the mould easily in the manual work process of catching up with for whole operation process is comparatively complicated. Therefore, the utility model provides a precast slab casting device capable of effectively solving the technical problems.
Disclosure of Invention
The utility model aims to provide a precast slab pouring device, which solves the defect that the conventional precast slab concrete pouring device can only perform fixed-point blanking, so that manual leveling is needed after precast slab pouring blanking.
The utility model is realized by the following technical scheme:
the utility model provides a precast slab pouring device, includes track frame and follows the concrete feed bin that track frame removed, the leading flank lower extreme of concrete feed bin equidistant is provided with a row of vertical feed cylinder, vertical feed cylinder rotates and is connected with the drive shaft that stretches into in the concrete feed bin, the trailing flank of concrete feed bin is provided with the unloading motor that is connected with the drive shaft, is located be provided with the spiral leaf that extends to in the concrete feed bin in the drive shaft in the vertical feed cylinder, every the lower extreme of vertical feed cylinder all rotates and is connected with the unloading pendulum pipe, the lower extreme of unloading pendulum pipe is provided with the direction strut, the lower surface of concrete feed bin is provided with flexible impeller, the end connection of flexible impeller has the regulating plate, set up the direction spout that acts on with every direction strut on the regulating plate, and a plurality of direction spouts are radial place ahead and open the setting.
As a further setting of the scheme, the lower end of the longitudinal feeding cylinder is provided with a rotary connecting pipe, the blanking swinging pipe comprises a horizontal pipe, two ends of the horizontal pipe are respectively provided with a first pipe end which is vertically upwards and a second pipe end which is vertically downwards, and the first pipe end is provided with a bearing connected with the rotary connecting pipe.
As a further arrangement of the scheme, the second pipe end is connected with the guide cover through rotation, the guide cover is provided with the gear ring, the outer surface of the second pipe end is provided with the adjusting motor, and a motor shaft of the adjusting motor is provided with a gear meshed with the gear ring.
As a further arrangement of the scheme, the upper end of the air guide sleeve is cylindrical, the left side and the right side of the lower end of the air guide sleeve extend outwards, and the front side and the rear side are close to the middle to form a linear discharge hole.
As a further arrangement of the scheme, the roller seat is fixed on the side surface of the concrete bin, a row of travelling wheels moving along the track frame are arranged in the roller seat, and a traction device for realizing the movement of the concrete bin is also arranged on the track frame.
As a further arrangement of the scheme, a flow guide block is arranged at the lower end of the inner wall of the concrete bin close to one side of the longitudinal feed conveying cylinder, a stirring bottom cavity is formed between the flow guide block and the other side wall of the concrete bin, semicircular grooves aligned with the longitudinal feed conveying cylinders are formed in the flow guide block, and the spiral blades are arranged on driving shafts in the longitudinal feed conveying cylinders and the semicircular grooves.
As a further arrangement of the scheme, the driving shafts positioned in the stirring bottom cavity are provided with stirring frames, and the stirring frames on the two adjacent driving shafts are arranged in a staggered manner.
As a further setting of above-mentioned scheme, be located the concrete silo lower surface of flexible impeller left and right sides all is provided with the slide rail, the regulating plate slides and sets up on two slide rails.
As a further arrangement of the scheme, a cleaning opening is formed in the lower end of the side face of the concrete bin, and a sealing plate is detachably arranged on the cleaning opening.
According to the precast slab pouring device disclosed by the utility model, in the use process, the concrete bin is moved along the track frame through the traction device, then when the concrete bin is moved to the upper part of the precast slab die, the corresponding blanking motor is controlled to operate according to the required pouring width of the precast slab, and then the concrete can be fed from multiple points through the actions of the blanking motor, the driving shaft and the spiral blades, so that the poured concrete evenly and comprehensively covers the precast slab die.
Simultaneously, this precast slab pouring device can also control extension or the shortening of flexible driving piece to the effective width of precast slab, then makes the regulating plate remove along the slide rail under the effect of flexible driving piece. The front ends of all the blanking swing pipes can be adjusted through the action between the guide sliding columns and the corresponding guide sliding grooves in the moving process of the adjusting plate, so that the front ends are adapted to the effective width of the precast slab die, and the application range of the whole precast slab pouring device is greatly improved.
In addition, this precast slab pouring device is provided with special structural design's kuppe in the front end of unloading balance staff, then controls the effective width when the in-line bin outlet unloading of kuppe lower extreme through accurate control regulating motor for the concrete material that arranges down in all kuppe can better even lay in precast slab mould, and concrete pouring is accomplished and is totally not needed carrying out the manual work and catch up with, directly vibration closely knit can.
Compared with the prior art, the utility model has the following beneficial effects:
the precast slab pouring device disclosed by the utility model can independently control whether the corresponding blanking motor operates according to the effective width of the precast slab when discharging, so that the effect of multipoint uniform blanking is achieved; in addition, when the effective width of prefabricated plate is great, still accessible flexible driving piece realizes the removal of regulating plate, then makes the unloading pendulum pipe rotate through the effect between direction spout and the direction traveller, and then adjusts the interval of unloading pendulum pipe outer end for carry out the multiple spot simultaneously unloading again after adapting to the effective width of prefabricated plate mould, guarantee that concrete can evenly pour in prefabricated plate mould, effectively improved the suitability of whole device.
According to the utility model, the blanking end of the blanking swing pipe is further rotationally connected with the guide cover with the discharge opening in a straight shape, and meanwhile, the driving assembly for precisely rotating and adjusting the guide cover is arranged on the blanking swing pipe, so that after the blanking end of the blanking swing pipe is opened, concrete materials can be better and uniformly paved in a precast slab die by controlling the angle adjustment of the guide cover, the leveling treatment is not needed after the precast slab is poured, and the pouring efficiency of the precast slab is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a first angular perspective structure of the present utility model;
FIG. 2 is a schematic view of a second angle perspective structure of the present utility model;
FIG. 3 is a schematic perspective view of the interior of the concrete silo according to the utility model;
FIG. 4 is a schematic diagram of a three-dimensional structure of a concrete silo, a telescopic pushing piece, an adjusting plate and the like in the utility model;
fig. 5 is a schematic view showing a three-dimensional structure of a concrete silo, a blanking swing pipe, a guide cover and the like in embodiment 2 of the present utility model;
fig. 6 is a schematic diagram of an assembly structure of a longitudinal feed cylinder, a blanking swing pipe and a guide cover in the utility model.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The present utility model will be described in detail with reference to fig. 1 to 6, and examples thereof.
Example 1
Embodiment 1 discloses precast slab pouring device, referring to fig. 1 and 2, the main body of the device includes two rail frames 1 and a concrete silo 2 which are arranged in parallel left and right, and corresponding precast slab dies are placed under the two rail frames 1 in the pouring process. The upper end opening of the concrete bin 2 is provided with a roller seat 3 which is convenient for adding concrete in a mixer to be thrown into, and then both the left side surface and the right side surface of the concrete bin 2 are welded, and a row of travelling wheels 4 which move along the track frame 1 are arranged in the roller seat 3. In addition, a traction device (not shown in the figure) for driving the concrete bin 2 to move along the direction along the track frame 1 is also arranged on the track frame 1, and the specific traction device can select an electric hoist as a tractor.
Referring to fig. 3 and 4, a row of equally spaced longitudinal feed cylinders 5 are arranged at the lower end of the front side surface of the concrete bin 2, a guide block 6 is arranged at the lower end of the inner wall of the concrete bin 2 near one side of the longitudinal feed cylinders 5, a stirring bottom cavity is formed between the guide block 6 and the other side wall of the concrete bin 2, and a semicircular groove 601 aligned with the front and rear of each longitudinal feed cylinder 5 is formed in the guide block 6. A driving shaft 7 is rotatably connected in each longitudinal feed cylinder 5, and a discharging motor 8 aligned with each driving shaft 7 is arranged on the rear side surface of the concrete silo 2. The specific blanking motor 8 selects a variable frequency motor, a control box 9 is arranged on the rear side face of the concrete bin 2, and a corresponding variable frequency module is arranged inside the control box 9, so that each blanking motor 8 can operate under the action of the control box 9. The rear end of the drive shaft 7 is then connected to a corresponding blanking motor 8, so that the drive shaft 7 can be rotated at a set rotational speed under the action of the blanking motor 8. Auger blades 10 are arranged on driving shafts 7 positioned in the longitudinal feed conveying cylinder 5 and the semicircular groove 601, then stirring frames 11 are arranged on the driving shafts 7 positioned in the stirring bottom cavity, and the stirring frames 11 on two adjacent driving shafts 7 are arranged in a front-back staggered mode, so that collision of the two stirring frames 11 in the rotation process of the driving shafts 7 is prevented.
Referring to fig. 6, a rotary nipple 501 is connected to the lower end of each longitudinal feed cylinder 5, and then a discharging swing pipe 12 is rotatably connected to the lower end of the rotary nipple 501 after the rotary nipple 501. In a specific design, the blanking swing pipe 12 includes a horizontal pipe 121, a first pipe end 122 vertically upwards and a second pipe end 123 vertically downwards are respectively connected to two ends of the horizontal section 121, a bearing 124 is disposed on the first pipe end 122, and the first pipe end 122 can be rotatably sleeved on the rotary connecting pipe 501 through the bearing 124. In addition, a guide strut 125 is provided on the lower surface of the horizontal tube 121, and the guide strut 125 is made of a metal abrasion-resistant material.
Referring to fig. 4, a telescopic pushing member 13 is fixedly installed on the lower surface of the concrete bin 2, a cylinder, an electric push rod or a screw rod lifter can be selected as a specific telescopic pushing member, then sliding rails 14 are fixed on the lower surface of the concrete bin 2 on the left side and the right side of the telescopic pushing member 13, an adjusting plate 15 is slidably arranged between the two sliding rails 14, and the end portion of the telescopic pushing member 13 is connected with the adjusting plate 15. The adjusting plate 15 is provided with guide sliding grooves 151 matching with the guide sliding columns 125 on each blanking swing pipe 12, and the plurality of guide sliding grooves 151 are radially opened forward. When the guide slide column 125 on the blanking swing pipe 12 is positioned at the end part of the guide slide groove 151 close to one side of the telescopic pushing piece 13, all the blanking swing pipes 12 are arranged in parallel and forwards; then, when the guide slide column 125 on the discharging swinging tube 12 is positioned at the end of the guide slide groove 151 at the side far away from the telescopic pushing piece 13, the front ends of all the discharging swinging tubes 12 are radially arranged in an outward opening way.
In the precast slab casting device disclosed in this embodiment 1, in the casting process of the precast slab mold, the stirred concrete is loaded into the concrete silo 2, and then the extension or shortening of the telescopic pushing member 13 is controlled according to the effective width of the precast slab mold, so that the adjusting plate 15 moves along the slide rail 14. The front ends of all the discharging swing pipes 12 are adjusted by the action between the guide slide posts 125 and the corresponding guide slide grooves 151 in the moving process of the adjusting plate 15 so as to be suitable for the effective width of the precast slab die. After the blanking pendulum pipe 12 is adjusted, starting a traction device to enable the concrete bin 2 to move at uniform speed along the track frame 1, when the concrete bin 2 moves to the position right above the precast slab die, starting a blanking motor 8 to enable a driving rotating shaft 7 to rotate, and discharging concrete from the blanking pendulum pipe 12 under the feeding action of the auger blade 10 and uniformly falling into the precast slab die.
Example 2
Embodiment 2 discloses a precast slab casting apparatus of improved design based on the technical scheme in embodiment 1, and the same points as embodiment 1 will not be described again.
Referring to fig. 5 and 6, in embodiment 2, a guide cover 16 is rotatably disposed on the second pipe end 123, and the upper end of the guide cover 16 is cylindrical so as to be conveniently connected to the second pipe end 123, and in a specific arrangement, the upper end of the guide cover 16 is rotatably connected to the lower end of the second pipe end 123 through a bearing. The left and right sides of the lower end of the air guide sleeve 16 extend outwards, and the front and rear sides are close to the middle to shrink, so that the discharge opening of the lower end of the air guide sleeve 16 is in a shape of a Chinese character 'yi', and the effective width of concrete blanking is enlarged.
In addition, in order to adjust the effective width of the guide cover 16 during discharging according to the adjusting state of the discharging swinging pipe 12, a gear ring 17 is further arranged on the outer surface of the upper end of the guide cover 16, then an adjusting motor 18 is fixedly arranged at the upper end of the second pipe end 123, the adjusting motor 18 is a stepping motor, a gear 19 meshed with the gear ring 17 is arranged on a motor shaft of the adjusting motor 18, and the effective width of the guide cover 16 at the time of discharging at the lower end of the discharge opening can be controlled by precisely controlling the rotating angle of the adjusting motor 18.
Finally, in this embodiment 2, a cleaning port connected with the stirring bottom cavity is further formed at the lower end of the side surface of the concrete bin 2, and a sealing plate 20 is detachably installed on the cleaning port, so that when the residual materials of the concrete bin 2 need to be cleaned, the sealing plate 20 can be opened to discharge the residual materials, and the concrete residual materials are prevented from being solidified and formed in the inner cavity of the concrete bin 2.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (9)
1. The utility model provides a precast slab pouring device, includes track frame and follows the concrete feed bin that track frame removed, its characterized in that, the leading flank lower extreme of concrete feed bin equidistant is provided with a row of vertical feed cylinder, the rotation of vertical feed cylinder is connected with the drive shaft that stretches into in the concrete feed bin, the trailing flank of concrete feed bin is provided with the unloading motor that is connected with the drive shaft, is located be provided with the spiral leaf that extends to in the concrete feed bin in the drive shaft in the vertical feed cylinder, every the lower extreme of vertical feed cylinder is all rotated and is connected with the unloading balance pipe, the lower extreme of unloading balance pipe is provided with the direction traveller, the lower surface of concrete feed bin is provided with flexible impeller, the end connection of flexible impeller has the regulating plate, set up the direction spout that acts on with every direction traveller on the regulating plate, and a plurality of direction spouts are radial place ahead and open the setting.
2. The precast slab casting device according to claim 1, wherein the lower end of the longitudinal feed cylinder is provided with a rotary connecting pipe, the blanking swing pipe comprises a horizontal pipe, two ends of the horizontal pipe are respectively provided with a first pipe end vertically upwards and a second pipe end vertically downwards, and the first pipe end is provided with a bearing connected with the rotary connecting pipe.
3. The precast slab casting device according to claim 2, wherein the second pipe end is connected with a guide cover through rotation, a gear ring is arranged on the guide cover, an adjusting motor is arranged on the outer surface of the second pipe end, and a gear meshed with the gear ring is arranged on a motor shaft of the adjusting motor.
4. A precast slab casting device according to claim 3, wherein the upper end of the guide cover is cylindrical, the left and right sides of the lower end of the guide cover extend outwards, and the front and rear sides are close to the middle to form a linear discharge opening.
5. The precast slab casting device according to claim 1, wherein roller seats are fixed on the side surfaces of the concrete bins, a row of travelling wheels moving along a track frame are arranged in the roller seats, and a traction device for realizing the movement of the concrete bins is further arranged on the track frame.
6. The precast slab casting device according to claim 1, wherein a guide block is arranged at the lower end of the inner wall of the concrete bin near one side of the longitudinal feed cylinder, a stirring bottom cavity is formed between the guide block and the other side wall of the concrete bin, semicircular grooves aligned with the longitudinal feed cylinder are formed in the guide block, and the spiral blades are arranged on driving shafts in the longitudinal feed cylinder and the semicircular grooves.
7. A precast slab casting apparatus according to claim 6, wherein a stirring frame is provided on the driving shaft located in the stirring bottom cavity, and stirring frames on two adjacent driving shafts are arranged in a staggered manner.
8. The precast slab casting device according to claim 1, wherein the lower surfaces of the concrete bins located at the left and right sides of the telescopic pushing member are provided with slide rails, and the adjusting plate is slidably disposed on the two slide rails.
9. The precast slab casting device according to claim 1, wherein a cleaning opening is formed in the lower end of the side face of the concrete bin, and a sealing plate is detachably arranged on the cleaning opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310842359.2A CN116810994A (en) | 2023-07-11 | 2023-07-11 | Precast slab pouring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310842359.2A CN116810994A (en) | 2023-07-11 | 2023-07-11 | Precast slab pouring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116810994A true CN116810994A (en) | 2023-09-29 |
Family
ID=88114418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310842359.2A Pending CN116810994A (en) | 2023-07-11 | 2023-07-11 | Precast slab pouring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116810994A (en) |
-
2023
- 2023-07-11 CN CN202310842359.2A patent/CN116810994A/en active Pending
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