CN219952851U - Water pump type wave making device - Google Patents
Water pump type wave making device Download PDFInfo
- Publication number
- CN219952851U CN219952851U CN202320933936.4U CN202320933936U CN219952851U CN 219952851 U CN219952851 U CN 219952851U CN 202320933936 U CN202320933936 U CN 202320933936U CN 219952851 U CN219952851 U CN 219952851U
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- water
- wave making
- connecting rod
- hole
- making device
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 179
- 238000003860 storage Methods 0.000 claims abstract description 51
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000009826 distribution Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 abstract description 5
- 238000005381 potential energy Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009347 mechanical transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The utility model relates to a water pump type wave making device, which comprises water supply chambers which are oppositely arranged at intervals, wherein the bottom of each water supply chamber is provided with a water tank which is used for storing water and is communicated with a wave making pool, water in the water tank is pumped into the water supply chambers through a water pump unit, a plurality of water storage chambers are arranged between the two water supply chambers, water in the two water supply chambers uniformly overflows into the water storage chambers through water distribution channels, the bottom of each water storage chamber is communicated with the wave making chamber through a first through hole, the side wall of each wave making chamber is provided with a wave outlet, and the wave making device is arranged in each wave making chamber in a matched mode. By arranging the crank-link mechanism, the action control of the gate is simple and efficient, and the action is continuous and soft, so that waves with various types and heights can be manufactured according to the requirements; meanwhile, the wave making device makes waves by utilizing potential energy of water in the water storage chamber, and the wave making device is simple in structure and low in cost.
Description
Technical Field
The utility model relates to the technical field of wave making devices, in particular to a water pump type wave making device.
Background
In order to meet the increasing beautiful living demands of people, the water park projects are vigorously developed, and the wave making machine is used as standard equipment of the water park, so that the demands are daily. Waves are manufactured in the wave making pool through the wave making machine, so that entertainment fun is increased.
Wave making machines in the prior art are mainly divided into air wave making machines and vacuum wave making machines. The air wave making machine has the advantages of high wave making frequency and low equipment construction cost, but the wave making height is smaller, the running noise is large, and noise isolation and reduction equipment is required to be additionally arranged; the vacuum wave generator has the characteristics of high wave generating height and low running noise, but has the advantages of high equipment power, long wave generating interval time, complex system and high civil engineering investment cost.
Disclosure of Invention
The inventor aims at the defects in the prior art, and provides a water pump type wave making device, which is characterized in that a crank connecting rod mechanism is arranged, so that the action control of a gate is simple and efficient, and the action is continuous and soft, thereby being capable of manufacturing waves with various types and heights according to the requirements; meanwhile, the wave making device makes waves by utilizing potential energy of water in the water storage chamber, and the wave making device is simple in structure and low in cost.
The technical scheme adopted by the utility model is as follows:
the water pump type wave making device comprises water supply chambers which are oppositely arranged at intervals, wherein a water tank is arranged at the bottom of each water supply chamber and is used for storing water, water in the water tank is pumped into the water supply chambers through a water pump unit, a plurality of water storage chambers are arranged between the two water supply chambers, water in the two water supply chambers overflows into the water storage chambers uniformly through water distribution channels, the bottom of each water storage chamber is communicated with the wave making chamber through a first through hole, a wave outlet is formed in the side wall of each wave making chamber, and the wave making device is installed in each wave making chamber in a matched mode;
the structure of the single wave making device is as follows: the hydraulic cylinder drives the gate to open or close the first through hole through the crank connecting rod mechanism, when the first through hole is opened, water in the water storage chamber flows out of the wave outlet through the first through hole to form waves, and when the first through hole is closed, the water storage chamber stores water.
As a further improvement of the above technical scheme:
the crank connecting rod mechanism has the structure that: the hydraulic cylinder is characterized by comprising a first connecting rod connected with the output end of the hydraulic cylinder, wherein the end of the first connecting rod is matched with a main shaft, the shaft end of the main shaft is matched with a second connecting rod, the end of the second connecting rod is connected with a connecting shaft through a third connecting rod, the third connecting rod is rotationally arranged at the shaft end of the connecting shaft, the shaft end of the connecting shaft is matched with a fourth connecting rod and a fifth connecting rod, the end of the fourth connecting rod is matched with a mounting seat, the mounting seat is used for mounting a gate, the end of the fifth connecting rod is arranged on the inner wall of a wave making chamber through a second connecting seat, the hydraulic cylinder drives the main shaft to rotate through the first connecting rod, drives the second connecting rod to swing, the third connecting rod drives the connecting shaft to move forwards or backwards, drives the fifth connecting rod to rotate around the second connecting seat, and simultaneously drives the gate to rotate around the first connecting seat through the fourth connecting rod and the mounting seat, so that the gate opens or closes the first through hole.
The other end of the first connecting rod is provided with a first limiting block.
The installation cover is installed in the outside cooperation of pneumatic cylinder, the structure of installation cover is: including inside hollow cover body, the symmetry is opened on the lateral wall of the cover body has the mounting hole, installs the main shaft in two mounting holes, still opens the maintenance hole on the lateral wall of the cover body, the apron is installed to the outside cooperation of maintenance hole, and the second stopper that corresponds with first stopper is installed to the bottom cooperation of the cover body.
When the gate is completely closed with the first through hole, the bottom of the first limiting block is in fit contact with the top of the second limiting block.
The side wall of each water storage chamber is provided with a second through hole, and the second through holes are communicated with two adjacent water storage chambers.
And the inner side wall of the first through hole is provided with a sealing rubber strip in a matched manner.
The water pump unit adopts a long shaft pump.
The beneficial effects of the utility model are as follows:
the utility model has compact and reasonable structure and convenient operation, and has high mechanical transmission efficiency by arranging the crank-link mechanism, thereby effectively saving the energy consumption of equipment and effectively reducing the driving force output by the hydraulic cylinder when the gate is closed; meanwhile, the potential energy of water is utilized to make waves, no extra driving force is needed to be provided, equipment arrangement is reduced, cost is effectively saved, and noise is reduced.
The utility model also has the following advantages:
(1) According to the utility model, the long shaft pump is used for pumping water from the water tank to the water supply chamber, so that the water pumping efficiency is high, the water storage time of the water storage chamber is effectively shortened, and the time of wave making interval is shortened.
(2) The utility model can accurately control the opening and closing speed and the opening and closing sequence of the gate by arranging the electric control system, thereby manufacturing waves with different heights and different forms and having wide application range.
(3) According to the utility model, the limit block is arranged to mechanically limit the closing position of the gate, so that the water leakage of the water storage chamber caused by over-rotation of the gate is effectively prevented.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural view of the wave making device according to the present utility model.
Fig. 3 is an exploded view of fig. 2.
Fig. 4 is a right side view of fig. 2.
Fig. 5 is a schematic view of the retraction structure of the hydraulic cylinder in the present utility model.
Fig. 6 is a schematic view of the hydraulic cylinder extension structure in the present utility model.
Fig. 7 is a front view of the present utility model.
FIG. 8 is a cross-sectional view taken at section A-A.
Wherein: 1. a water supply chamber; 2. a distribution canal; 3. a water storage chamber; 4. a wave making chamber; 5. a water tank; 6. a first through hole; 7. a second through hole; 8. a wave outlet; 9. a wave making device; 10. a gate; 11. a hydraulic cylinder; 12. a crank-link mechanism; 13. a first connection base; 14. a second connecting seat; 15. a mounting cover; 16. a water pump unit;
1201. a first link; 1202. a second link; 1203. a third link; 1204. a fourth link; 1205. a fifth link; 1206. a main shaft; 1207. a connecting shaft; 1208. a mounting base; 1209. a first limiting block;
1501. a cover body; 1502. a mounting hole; 1503. a second limiting block; 1504. and a cover plate.
Detailed Description
The following describes specific embodiments of the present utility model with reference to the drawings.
The structure and the function of the utility model are as follows:
as shown in fig. 1-8, a water pump type wave making device comprises water supply chambers 1 which are oppositely arranged at intervals, wherein a water tank 5 is arranged at the bottom of each water supply chamber 1, the water tank 5 is used for storing water, water in the water tank 5 is pumped into the water supply chambers 1 through a water pump unit 16, a plurality of water storage chambers 3 are arranged between the two water supply chambers 1, water in the two water supply chambers 1 overflows into the water storage chambers 3 uniformly through a water distribution channel 2, the bottom of each water storage chamber 3 is communicated with a wave making chamber 4 through a first through hole 6, a wave outlet 8 is formed in the side wall of each wave making chamber 4, and a wave making device 9 is installed in the interior of each wave making chamber 4 in a matched manner; the structure of the single wave making device 9 is as follows: the hydraulic cylinder 11 is included, the output of the hydraulic cylinder 11 is connected with the gate 10 through the crank connecting rod mechanism 12, the gate 10 is installed below the first through hole 6 through the first connecting seat 13, the hydraulic cylinder 11 drives the gate 10 through the crank connecting rod mechanism 12 to enable the first through hole 6 to be opened or closed, when the first through hole 6 is opened, water in the water storage chamber 3 flows out of the wave outlet 8 through the first through hole 6 to form waves, and when the first through hole 6 is closed, the water storage chamber 3 stores water. The wave making device is arranged in the wave making pool and is used for forming waves in the wave making pool; the wave making device comprises two water supply chambers 1, a water tank 5 is arranged at the bottom of each water supply chamber 1, the water tank 5 is communicated with a wave making pool, a plurality of water storage chambers 3 are arranged between the two water supply chambers 1, a wave making chamber 4 is connected with the bottom of each single water storage chamber 3, the wave making chamber 4 and the water storage chambers 3 are communicated through a first through hole 6, and the first through hole 6 is positioned at the position where the bottom of the water storage chamber 3 is connected with the top of the wave making chamber 4.
The water storage chamber 3 is of a concrete structure, and is safe and reliable.
The water pump assembly 16 is provided with a corresponding pipe system, which assists the water pump assembly 16 in pumping water from the water tank 5 into the water supply chamber 1.
When the gate 10 is opened, the water in the water storage chamber 3 flows out from the water outlet 8 to the water storage tank through the water storage chamber 4, and the inner wall of the water storage chamber 4 is streamline, so that the water flows out more quickly;
the two sides of the wave making pool are provided with water return channels which are communicated with the water tank 5, so that the water source inside the water tank 5 is ensured to be sufficient, and circulation is formed.
The crank and link mechanism 12 has the structure that: the hydraulic cylinder 11 drives the main shaft 1206 to rotate through the first connecting rod 1201, drives the second connecting rod 1202 to swing, enables the third connecting rod 1203 to drive the connecting shaft 1207 to advance or retreat, drives the fifth connecting rod 1205 to rotate around the second connecting seat 14, and simultaneously drives the gate 10 to rotate around the first connecting seat 13 through the fourth connecting rod 1204 and the mounting seat 1208, so that the gate 10 opens or closes the first through hole 6. The first connecting rod 1201 is tightly matched with the main shaft 1206, the second connecting rod 1202 is tightly matched with the main shaft 1206, the third connecting rod 1203 is rotationally connected with the second connecting rod 1202, the third connecting rod 1203 is tightly matched with the connecting shaft 1207, the fourth connecting rod 1204 is rotationally connected with the connecting shaft 1207, the fifth connecting rod 1205 is rotationally connected with the second connecting seat 14, the fourth connecting rod 1204 is fixedly connected with the mounting seat 1208, the mounting seat 1208 is rotationally connected with the first connecting seat 13, the gate 10 is mounted on the top of the mounting seat 1208 and is mounted in a matched manner with the first connecting seat 13 through the mounting seat 1208, and the main shaft 1206 is rotationally mounted with the cover 1501.
The crank link mechanism 12 converts the linear motion of the extension and retraction of the hydraulic cylinder 11 into the rotary motion of the main shaft 1206 through the first link 1201 and the main shaft 1206, and the second link 1202 and the third link 1203 convert the rotary motion of the main shaft 1206 into the motion of making the connecting shaft 1207 advance or retreat, so that the fourth link 1204 can drive the gate 10 to rotate around the first connecting seat 13, and meanwhile, the fifth link 1205 installed at the shaft end of the connecting shaft 1207 rotates around the second connecting seat 14, limiting the fourth link 1204 and guaranteeing the motion stability of the fourth link 1204.
The crank-link mechanism 12 has high transmission efficiency, can enable the gate 10 to be opened rapidly when making waves, reduces the blocking of water in the water storage chamber 3, and realizes good wave making effect; the crank-link mechanism 12 acts moderately, so that the impact on the sealing rubber strip can be reduced when the gate 10 is closed after the wave is generated, and the service life of the gate is prolonged; meanwhile, when the water storage chamber 3 starts to store water, because the third connecting rod 1203 and the fourth connecting rod 1204 form an included angle of 180 degrees, the hydraulic cylinder 11 only needs to output a small driving force to enable the third connecting rod 1203 to position the connecting shaft 1207, so that the gate 10 can keep a closed state, the equipment energy consumption is effectively saved, and the mechanical transmission efficiency is high.
The other end of the first connecting rod 1201 is provided with a first limiting block 1209; the installation cover 15 is installed in the outside cooperation of pneumatic cylinder 11, and the structure of installation cover 15 is: the device comprises a cover body 1501 with a hollow inside, mounting holes 1502 are symmetrically formed in the side wall of the cover body 1501, a main shaft 1206 is mounted in each of the two mounting holes 1502, a maintenance hole is further formed in the side wall of the cover body 1501, a cover plate 1504 is mounted outside the maintenance hole in a matched mode, and a second limiting block 1503 corresponding to the first limiting block 1209 is mounted at the bottom of the cover body 1501 in a matched mode; when the shutter 10 completely closes the first through hole 6, the bottom of the first stopper 1209 is in contact with the top of the second stopper 1503. The first stopper 1209 and the second stopper 1503 ensure that the gate 10 cannot leak water from the water storage chamber 3 due to excessive rotation, and mechanically limit the rotation angle of the gate 10 to prevent the gate 10 from over-rotating.
The side wall of each water storage chamber 3 is provided with a second through hole 7, and the second through holes 7 are communicated with two adjacent water storage chambers 3. In order to achieve the balanced wave making effect, the water storage chambers 3 are communicated by the second through holes 7, and after the water level reaches the height of the second through holes 7, the water flows between the water storage chambers 3 uniformly.
The inner side wall of the first through hole 6 is matched and provided with a sealing rubber strip. Sealing the rubber strip and ensuring the closing effect of the gate 10 prevents water leakage.
The pump assembly 16 employs a long axis pump. The long-axis pump has large flow, and can meet the requirement of rapid pumping.
An electric control system is arranged in the water pump type wave making device in a matched mode. The structure of the electric control system is as follows: the intelligent control system comprises a main control chip, wherein information transmission is carried out between the main control chip and a touch screen, information transmission is carried out between the main control chip and a hydraulic control system, and the main control chip adopts a PLC. The electric control system of the wave making device adopts a PLC as a main control chip and is provided with a touch screen, an operator can send instructions to the PLC through the touch screen, and various operation parameters of the wave making device can be monitored through the touch screen; the PLC controls the opening angle and speed of the gate 10 by communicating with a hydraulic control system and controlling the telescopic length and speed of the hydraulic cylinder 11 so as to control the water quantity in the water storage chamber 3 and realize various wave making modes.
The working process of the utility model is as follows:
lifting water in the water tank 5 into the water supply chamber 1 through a pipeline by a water pump unit 16;
when the water in the water supply chamber 1 reaches a first set water level line, the water flows into the water distribution channel 2;
when the water in the water distribution channel 2 reaches a second set water level line, the water in the water distribution channel 2 overflows into the water storage chamber 3;
when the water level in the water storage chamber 3 rises to a certain height, the control system sends an instruction to the hydraulic control system, the hydraulic cylinder 11 retracts, the main shaft 1206 is driven to rotate anticlockwise through the first connecting rod 1201, the second connecting rod 1202 and the third connecting rod 1203 are driven to retract, the connecting shaft 1207 is simultaneously driven to retract, the mounting seat 1208 is driven to rotate clockwise around the first connecting seat 13 through the fourth connecting rod 1204, and the gate 10 arranged at the top of the mounting seat 1208 can rotate anticlockwise around the first connecting seat 13;
the water in the water storage chamber 3 flows to the wave making chamber 4 through the first through hole 6 which is opened, and then flows out to the wave making pool through the wave outlet 8 to form waves;
after the wave making is completed, the control system sends an instruction to the hydraulic control system, the hydraulic cylinder 11 stretches out, the main shaft 1206 is driven to rotate clockwise through the first connecting rod 1201, the second connecting rod 1202 and the third connecting rod 1203 are driven to advance, the connecting shaft 1207 is driven to advance, the mounting seat 1208 is driven to rotate clockwise around the first connecting seat 13 through the fourth connecting rod 1204, and the gate 10 arranged at the top of the mounting seat 1208 can rotate clockwise around the first connecting seat 13;
when the angle between the fourth link 1204 and the fifth link 1205 is 180 degrees, the gate 10 completely closes the first through hole 6, and the water storage chamber 3 stores water again, and enters the next wave making cycle.
According to the utility model, the crank connecting rod mechanism 12 is arranged, and the action of the hydraulic cylinder 11 is controlled through the electric control system, so that the opening and closing angle and speed of the gate 10 are controllable, and various types of waves can be realized; meanwhile, the long-axis pump has large flow, can meet the requirement of rapid pumping, and can improve the water storage speed of the water storage chamber 3, thereby effectively shortening the wave making interval time.
The above description is intended to illustrate the utility model and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the utility model.
Claims (8)
1. A water pump type wave making device is characterized in that: the water supply device comprises water supply chambers (1) which are oppositely arranged at intervals, wherein the bottom of each water supply chamber (1) is provided with a water tank (5), the water tank (5) is used for storing water, water in the water tank (5) is pumped into the water supply chambers (1) through a water pump unit (16), a plurality of water storage chambers (3) are arranged between the two water supply chambers (1), water in the two water supply chambers (1) uniformly overflows into the water storage chambers (3) through a water distribution channel (2), the bottom of each water storage chamber (3) is communicated with a wave making chamber (4) through a first through hole (6), a wave outlet (8) is formed in the side wall of each wave making chamber (4), and a wave making device (9) is matched and installed in each wave making chamber (4);
the structure of the single wave making device (9) is as follows: including pneumatic cylinder (11), the output of pneumatic cylinder (11) is connected with gate (10) through crank link mechanism (12), and gate (10) are installed in the below of first through-hole (6) through first connecting seat (13), and pneumatic cylinder (11) make first through-hole (6) open or close through crank link mechanism (12) drive gate (10), and when first through-hole (6) were opened, the inside water of water storage room (3) flowed out through first through-hole (6) from wave mouth (8) and formed the wave, and when first through-hole (6) were closed, water storage room (3) was carried out the retaining.
2. A water pump type wave making device as defined in claim 1, wherein: the crank connecting rod mechanism (12) is characterized in that: including first connecting rod (1201) with the output of pneumatic cylinder (11) is connected, the end and the main shaft (1206) cooperation installation of first connecting rod (1201), second connecting rod (1202) are installed in the axle head cooperation of main shaft (1206), the end of second connecting rod (1202) is connected with connecting axle (1207) through third connecting rod (1203), third connecting rod (1203) is rotated and is installed the axle head at connecting axle (1207), fourth connecting rod (1204) and fifth connecting rod (1205) are still installed in the axle head cooperation of connecting axle (1207), mount pad (1208) are installed in the end cooperation of fourth connecting rod (1204), mount pad (1208) are used for installing gate (10), the end of fifth connecting rod (1205) is installed on the inner wall of wave making room (4) through second connecting seat (14), pneumatic cylinder (11) drive main shaft (1206) through first connecting rod (1201) rotation, drive second connecting rod (1202) swing for third connecting rod (1203) take connecting axle (1207) to advance or retreat, drive fifth connecting rod (1205) and rotate about first connecting seat (10) through fourth connecting rod (1208) and drive gate (10) and make gate (10) open or make simultaneously around first connecting seat (10) rotate about gate (10).
3. A water pump type wave making device as defined in claim 2, wherein: the other end of the first connecting rod (1201) is provided with a first limiting block (1209).
4. A water pump type wave making device as defined in claim 3, wherein: the outside cooperation of pneumatic cylinder (11) is installed and is installed installation cover (15), the structure of installation cover (15) is: including inside hollow cover body (1501), the symmetry is opened on the lateral wall of cover body (1501) has mounting hole (1502), installs main shaft (1206) in two mounting holes (1502), still opens on the lateral wall of cover body (1501) has the maintenance hole, apron (1504) is installed in the outside cooperation of maintenance hole, and second stopper (1503) corresponding with first stopper (1209) are installed in the bottom cooperation of cover body (1501).
5. The water pump type wave making device as defined in claim 4, wherein: when the gate (10) completely closes the first through hole (6), the bottom of the first limiting block (1209) is in contact with the top of the second limiting block (1503).
6. A water pump type wave making device as defined in claim 1, wherein: the side wall of each water storage chamber (3) is provided with a second through hole (7), and the second through holes (7) are communicated with two adjacent water storage chambers (3).
7. A water pump type wave making device as defined in claim 1, wherein: the inner side wall of the first through hole (6) is provided with a sealing rubber strip in a matching way.
8. A water pump type wave making device as defined in claim 1, wherein: the water pump unit (16) adopts a long-shaft pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320933936.4U CN219952851U (en) | 2023-04-23 | 2023-04-23 | Water pump type wave making device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320933936.4U CN219952851U (en) | 2023-04-23 | 2023-04-23 | Water pump type wave making device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219952851U true CN219952851U (en) | 2023-11-03 |
Family
ID=88545881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320933936.4U Active CN219952851U (en) | 2023-04-23 | 2023-04-23 | Water pump type wave making device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219952851U (en) |
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2023
- 2023-04-23 CN CN202320933936.4U patent/CN219952851U/en active Active
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