CN214228861U - Special miniature automatic rice transplanting device for rice test field and control circuit thereof - Google Patents
Special miniature automatic rice transplanting device for rice test field and control circuit thereof Download PDFInfo
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- CN214228861U CN214228861U CN202022384501.8U CN202022384501U CN214228861U CN 214228861 U CN214228861 U CN 214228861U CN 202022384501 U CN202022384501 U CN 202022384501U CN 214228861 U CN214228861 U CN 214228861U
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- 241000209094 Oryza Species 0.000 title claims abstract description 140
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 140
- 235000009566 rice Nutrition 0.000 title claims abstract description 140
- 230000005540 biological transmission Effects 0.000 claims description 30
- 210000000078 claw Anatomy 0.000 claims description 27
- 230000033001 locomotion Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The utility model discloses a special miniature automatic rice transplanting device for a rice test field and a control circuit thereof, which comprises a frame, wherein a rice transplanting execution device, a distance control device and a power device are arranged on the frame, the rice transplanting execution device is used for grabbing rice seedlings and injecting the rice seedlings into a farmland, the distance control device is used for controlling the grabbing frequency of the rice transplanting execution device, and the power device is used for driving the automatic rice transplanting device to move in the field; the power device comprises a first motor, a second motor, a first roller, a second roller, a third roller and a fourth roller, the first roller and the second roller are arranged on the front side and the rear side of the bottom of the rack, the third roller and the fourth roller are arranged on the left side and the right side of the bottom of the rack, the first motor drives the first roller and the second roller to rotate, and the second motor drives the third roller and the fourth roller to rotate. The rice transplanter can realize automatic advancing, retreating, left and right movement and automatic rice transplanting, is suitable for small-area rice transplanting, solves the problem that mechanical rice transplanting cannot be performed in a rice test field, and reduces the requirement of a rice field test on labor force.
Description
Technical Field
The utility model relates to the field of agricultural machinery, especially, relate to a special miniature automatic rice transplanting device in rice test field and control circuit thereof.
Background
At present, cell tests are mostly adopted in rice breeding tests, the area of a single cell is generally 3 multiplied by 4 square meters, the number of nests of seedlings in the cell is small, a conventional rice transplanter cannot be applied, and the rice seedlings can only be planted by manually pulling lines at a fixed distance. The problems of the prior breeding and transplanting are as follows: 1) seedlings are transplanted in a community unit in breeding, but the large automatic rice transplanter on the market at present has overlarge working area, a large number of lines in single operation and low flexibility, and is not suitable for community rice transplanting. 2) Most small rice transplanters on the market are hand-held stepping rice transplanters, 2-4 rows are operated in a single operation, the rice transplanters need to be manually held for working, the rice transplanting tracks are irregular, the turning space is large, and foot prints left by manual walking in a cell can cause missing rice transplanting. 3) At present, only the positioning of the seedling transplanting by the manual guy rope can meet the requirements of the seedling transplanting in the residential quarter, but the manpower resource is lacked, the cost is high, and the working efficiency is low. Therefore, there is an urgent need for a rice transplanting device that can be flexibly used in a small area.
SUMMERY OF THE UTILITY MODEL
To the weak point that exists among the above-mentioned technique, the utility model provides a special miniature automatic rice transplanting device in rice test field and control circuit thereof can realize automatic the marcing backward and remove and control and move and transplant rice seedlings automatically, is fit for the use of transplanting rice seedlings in the subregion, has solved the problem that can't the machinery transplanted rice seedlings in the rice test plot, has improved the experimental district of rice and has transplanted rice seedlings work efficiency, has reduced the experimental demand to the labour in rice field.
In order to achieve the purpose, the utility model provides a special miniature automatic rice transplanting device for a rice test field, which comprises a frame, wherein a rice transplanting execution device, a distance control device and a power device are arranged on the frame, the rice transplanting execution device is used for grabbing rice seedlings to be injected into a farmland, the distance control device is used for controlling the grabbing frequency of the rice transplanting execution device, and the power device is used for driving the automatic rice transplanting device to move in the field; the power device comprises a first motor, a second motor, a first roller, a second roller, a third roller and a fourth roller, wherein the first roller and the second roller are arranged on the front side and the rear side of the bottom of the rack, the third roller and the fourth roller are arranged on the left side and the right side of the bottom of the rack, the first motor drives the first roller and the second roller to rotate, and the second motor drives the third roller and the fourth roller to rotate. The automatic rice transplanting machine can realize automatic forward and backward movement, left and right movement and automatic rice transplanting, is suitable for small-area rice transplanting, solves the problem that mechanical rice transplanting cannot be carried out in a rice test field, improves the rice test cell rice transplanting working efficiency, and reduces the requirement of a rice field test on labor force. The frame is provided with three layers of tower-shaped platforms, and the bottom layer is a rectangular boat-shaped platform.
Preferably, the seedling transplanting execution device comprises a limiting plate, a fixed wheel, a connecting plate and a seedling transplanting claw, wherein one end of the connecting plate is fixed to the edge of the fixed wheel, the other end of the connecting plate is connected with the seedling transplanting claw, the limiting plate is of a right-angle hollow support structure, and one end of the limiting plate is fixedly arranged at the top of the rack, and the other end of the limiting plate is used for limiting the position path of the seedling transplanting claw. The seedling can be grabbed to transplant in the process that the transplanting claw moves up and down.
Preferably, be provided with the spacing groove on the claw of transplanting rice seedlings, be provided with on the limiting plate and supply the claw of transplanting rice seedlings pass dodge the hole and be used for with spacing groove complex gag lever post, the gag lever post is in the motion of spacing inslot.
Preferably, the seedling tray is arranged in front of the frame and used for placing seedlings to be transplanted, the stepping motor is connected with the transmission gear, the transmission gear is meshed with the rack, the stepping motor, the transmission gear and the rack are arranged on the upper edge of the seedling tray together, and the seedling tray is obliquely fixed on one side of the frame. The seedling tray is used for storing seedlings and realizing automatic operation.
Preferably, the seedling transplanting execution device further comprises a photoelectric gate, the photoelectric gate is used for detecting the seedling transplanting times of the seedling transplanting claw, and the photoelectric gate is further connected with a control device, and the control device controls the first motor, the second motor and the stepping motor to work. The first motor, the second motor and the stepping motor are 24v direct current motors and are mainly used for providing advancing power for the whole device and controlling the movement direction of the transplanting device, and the stepping motor is mainly used for moving the seedling tray to deliver seedlings. The whole system is powered by a 24v lithium battery.
Preferably, the distance control device comprises a distance control wheel and a transmission device, the distance control wheel is connected with the transmission device, the transmission device is connected with the fixed wheel, and the rotation direction of the distance control wheel is the same as the rotation direction of the first roller wheel and the second roller wheel. The distance control wheel is used for controlling the transplanting distance of the transplanting device, and the transplanting distance can be changed by changing the size of the distance control wheel; the distance control wheel rotates for a circle of the transmission shaft to drive the seedling transplanting execution device to transplant seedlings once, so that the same seedling transplanting spacing is ensured.
Preferably, the first roller and the second roller have the same width, the third roller and the fourth roller have the same width, and the first roller, the second roller, the third roller and the fourth roller are of a quadrilateral enclosing structure.
A control circuit of a miniature automatic rice transplanting device special for a rice test field is provided with auxiliary positioning plates around a rice transplanting area and comprises
The photoelectric sensor module is used for capturing and identifying the auxiliary positioning plate and the rice transplanting actions of the rice transplanting claws, and sending and identifying signals;
the control module is used for responding to the identification signal and sending out a control signal;
and the relay module is used for controlling the first motor or the second motor to rotate. The control module is a single chip microcomputer.
Preferably, the photoelectric sensor module comprises a first photoelectric sensor, a second photoelectric sensor, a third photoelectric sensor and a photoelectric door, the first photoelectric sensor is arranged on the rack at the front end of the rice transplanting device, the second photoelectric sensor is arranged on the rack at the rear end of the rice transplanting device, and the third photoelectric sensor is arranged on one side of the rice transplanting device far away from the rice transplanting execution device.
Preferably, the relay module comprises five relay units, and the five relay units are used for controlling the first motor and the second motor to rotate positively and negatively.
The utility model has the advantages that: compared with the prior art, the utility model provides a special miniature automatic rice transplanting device for a rice test field, which comprises a frame, wherein a rice transplanting execution device, a distance control device and a power device are arranged on the frame, the rice transplanting execution device is used for grabbing rice seedlings to be injected into a farmland, the distance control device is used for controlling the grabbing frequency of the rice transplanting execution device, and the power device is used for driving the automatic rice transplanting device to move in the field; the power device comprises a first motor, a second motor, a first roller, a second roller, a third roller and a fourth roller, wherein the first roller and the second roller are arranged on the front side and the rear side of the bottom of the rack, the third roller and the fourth roller are arranged on the left side and the right side of the bottom of the rack, the first motor drives the first roller and the second roller to rotate, and the second motor drives the third roller and the fourth roller to rotate. The automatic rice transplanting machine can realize automatic forward and backward movement, left and right movement and automatic rice transplanting, is suitable for small-area rice transplanting, solves the problem that mechanical rice transplanting cannot be carried out in a rice test field, improves the rice test cell rice transplanting working efficiency, and reduces the requirement of a rice field test on labor force.
Drawings
FIG. 1 is a perspective view of the present invention;
fig. 2 is a front view of the present invention.
Fig. 3 is a bottom view of the present invention;
fig. 4 is a first circuit diagram of a sensor module of the present invention;
fig. 5 is a circuit diagram of a relay unit of the present invention;
figure 6 is a circuit diagram of the control module of the present invention,
fig. 7 is an overall circuit diagram of the present invention;
fig. 8 is a second circuit diagram of a sensor module according to the present invention;
fig. 9 is a third circuit diagram of the sensor module of the present invention.
Description of the symbols of the main elements: 1. a frame; 2. a seedling transplanting execution device; 3. a distance control device; 4. a power plant; 5. a photosensor; 21. a photogate; 22. seedling trays; 23. fixed wheels, 24 and connecting plates; 25. transplanting claws; 26. a limiting plate; 27. a stepping motor; 28. a rack; 31. a distance control wheel; 32. a transmission device; 41. a first motor; 42. a second motor; 43. a first roller; 44. a second roller 45, a third roller; 46. a fourth roller; 47. a first drive chain set; 48. and a second transmission chain set.
Detailed Description
In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.
Example 1: referring to fig. 1 to 3, the miniature automatic rice transplanting device for the rice test field of the present embodiment includes a frame 1, a rice transplanting execution device 2, a distance control device 3 and a power device 4 are arranged on the frame 1, the rice transplanting execution device 2 is used for grabbing rice seedlings to be inserted into a field, the distance control device 3 is used for controlling the grabbing frequency of the rice transplanting execution device 2, and the power device 4 is used for driving the automatic rice transplanting device to move in the field; the power device 4 comprises a first motor 41, a second motor 42, a first roller 43, a second roller 44, a third roller 45 and a fourth roller 46, the first roller 43 and the second roller 44 are arranged on the front side and the rear side of the bottom of the rack 1, the third roller 45 and the fourth roller 46 are arranged on the left side and the right side of the bottom of the rack 1, the first motor 41 drives the first roller 43 and the second roller 44 to rotate, and the second motor 42 drives the third roller 45 and the fourth roller 46 to rotate. The automatic rice transplanting machine can automatically move forwards, backwards, leftwards and rightwards, is very suitable for small-area rice transplanting, solves the problem that mechanical rice transplanting cannot be carried out in a rice test field, improves the rice test community rice transplanting working efficiency, and reduces the requirement of a rice field test on labor force. The frame 1 is provided with three layers of tower-shaped platforms, and the bottom layer is a rectangular boat-shaped platform. The device further comprises a first transmission chain group 47 and a second transmission chain group 48, wherein the first motor 41 drives the first roller 43 and the second roller 44 to rotate through the first transmission chain group 47, and the second motor 42 drives the third roller 45 and the fourth roller 46 to rotate through the second transmission chain group 48.
The function of the seedling planting actuator 2 can be considered to be summarized as completing the seedling planting action according to the specified seedling planting row spacing. The one-time integral seedling transplanting action comprises that the transplanter advances in the field to drive the distance control wheel to rotate for a circle, the distance control wheel 31 rotates to drive the transmission device 32 to rotate so as to enable the fixed wheel 23 and the distance control wheel 31 to rotate in the same period, the fixed wheel 23 drives the seedling transplanting claws 25 through the connecting plate 24 to grab seedlings and insert the seedlings downwards into the field, the distance control wheel 31 rotates for a circle, the fixed wheel 23 rotates for a circle, the seedling transplanting claws 25 complete one up-down movement, the photoelectric gate 21 detects one movement of the seedling transplanting claws 25 and generates a signal to be transmitted to the control device, and the control device controls the stepping motor 27 to rotate so as to move the seedling tray 22 for a certain distance through the meshing transmission of the transmission gear and the rack 28, so that the seedlings can be grabbed when the seedling transplanting claws 25 move up and down next time.
Example 2: the seedling transplanting execution device 2 of the embodiment comprises a limiting plate 26, a fixed wheel 23, a connecting plate 24 and a seedling transplanting claw 25, wherein one end of the connecting plate 24 is fixed at the edge of the fixed wheel 23, the other end of the connecting plate is connected with the seedling transplanting claw 25, the limiting plate 26 is of a right-angled hollow support structure, one end of the limiting plate is arranged at the top of the rack 1, and the other end of the limiting plate is used for limiting the position path of the seedling transplanting claw 25. The seedling can be grabbed to transplant in the process that the seedling transplanting claw 25 moves up and down. The transplanting claw 25 of the embodiment is provided with a limiting groove, the limiting plate 26 is provided with a dodging hole for the transplanting claw 25 to pass through and a limiting rod for matching with the limiting groove, and the limiting rod moves in the limiting groove. The seedling transplanting execution device 2 of the embodiment further comprises a seedling tray 22, a stepping motor 27, a transmission gear and a rack 28, wherein the seedling tray is arranged in front of the frame and used for placing seedlings to be transplanted, the stepping motor 27 is connected with the transmission gear, the transmission gear is meshed with the transmission gear and arranged on the upper edge of the seedling tray, and the seedling tray 22 is obliquely fixed on one side of the frame 1. The seedling tray 22 is used for storing seedlings and realizing automatic operation. The seedling transplanting execution device 2 of the embodiment further comprises a photoelectric gate 21, the photoelectric gate 21 is used for detecting the seedling transplanting times of the seedling transplanting claw 25, and the photoelectric gate 21 is further connected with a control device which controls the first motor 41, the second motor 42 and the stepping motor 27 to work. The first motor 41, the second motor 42 and the stepping motor 27 are all 24v direct current motors, the first motor and the second motor are mainly used for providing power for the whole device and controlling the movement direction of the transplanting device, and the stepping motor is mainly used for moving a seedling tray to deliver seedlings. The whole system is powered by a 24v lithium battery.
Example 3: the distance control device 3 of the present embodiment includes a distance control wheel 31 and a transmission device 32, the distance control wheel 31 is rotatably connected to the transmission device 32, the transmission device 32 is rotatably connected to the fixed wheel 23, and the rotation direction of the distance control wheel 31 is the same as the rotation direction of the first roller 43 and the second roller 44. The distance control wheel 31 is used for controlling the transplanting distance of the transplanting device, and the transplanting distance can be changed by changing the size of the distance control wheel 31; the distance control wheel 31 rotates for a circle of the transmission shaft to drive the seedling transplanting execution device 2 to transplant seedlings once, thereby ensuring that the transplanting row spacing is the same. The first roller 43 and the second roller 44 of this embodiment have the same width, the third roller 45 and the fourth roller 46 have the same width, and the first roller 43, the second roller 44, the third roller 45 and the fourth roller 46 have a quadrilateral enclosing structure.
Example 4: referring to fig. 4 to 9, in the control circuit of the miniature automatic rice transplanting device for a rice test field of the present embodiment, auxiliary positioning plates are disposed around a rice transplanting area, and include a photoelectric sensor module for capturing and identifying the auxiliary positioning plates and sending an identification signal; the control module is used for responding to the identification signal and sending out a control signal; and the relay module is used for controlling the first motor 41 or the second motor 42 to rotate. The photoelectric sensor module of the embodiment comprises a first photoelectric sensor, a second photoelectric sensor, a third photoelectric sensor and a photoelectric door, wherein the first photoelectric sensor is arranged on a rack at the front end of the transplanting device, the second photoelectric sensor is arranged on a rack at the rear end of the transplanting device, the third photoelectric sensor is arranged on one side of the transplanting device, which is far away from the transplanting execution device, and the photoelectric door is arranged on the rack below the seedling tray and is required to pass through the photoelectric door when the transplanting claws transplant seedlings.
Example 5: the control module of this embodiment is a single chip microcomputer, and is used for writing a program, receiving a signal from the photoelectric sensor, and controlling the relay to control the forward and reverse rotation of the first motor 41 and the second motor 42; the auxiliary positioning plate is made of opaque material such as wood plate and is used for controlling the line change of the whole device. After the miniature rice transplanter is started, the first relay and the third relay are closed, and power is supplied to the first roller 43 and the second roller 44 to rotate forward so that the rice transplanter advances; after the first photoelectric sensor unit detects the auxiliary positioning plate, a high level is input into the single chip microcomputer, when the single chip microcomputer receives the high level of the first photoelectric sensor unit, a signal is input into the relay, the first relay and the third relay disconnect the closing of the fifth relay to cut off the power of the advancing first roller 43 and the advancing second roller 44, and supply power to the transversely moving third roller 45 and the transversely moving fourth roller 46 to realize line changing; when the second photoelectric sensor unit detects that the auxiliary positioning plate inputs a high level to the single chip microcomputer, the single chip microcomputer receives the high level of the second photoelectric sensor unit and inputs a signal to the relay, the fifth relay is disconnected, the second relay and the fourth relay are closed, the power is cut off for the third roller 45 and the fourth roller 46 which move transversely, power is supplied for the first roller 43 and the second roller 44 which move forwards, and the first roller 43 and the second roller 44 are enabled to rotate reversely to realize line changing and then move forwards; when the third photoelectric sensor unit detects the auxiliary positioning plate after walking to the other end of the paddy field, a high level is output, the single chip microcomputer inputs a signal to the relay after detecting the high level of the third photoelectric sensor unit, and the second relay and the fourth relay are disconnected, the fifth relay is closed, the power is cut off for the advancing first roller 43 and the advancing second roller 44, and power is supplied for the transversely moving third roller 45 and the transversely moving fourth roller 46; when the second photoelectric sensor unit detects the auxiliary positioning plate again and inputs a high level to the single chip microcomputer, the single chip microcomputer receives the high level of the second photoelectric sensor unit and then inputs a signal to the relay, and the fifth relay disconnects the first relay and the third relay to be closed and opened, so that the third roller 45 and the fourth roller 46 which transversely move are powered off, and power is supplied to the advancing first roller 43 and the advancing second roller 44. So that the circulation of the program is realized, thereby realizing the plot rice transplanting.
The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.
Claims (10)
1. A miniature automatic rice transplanting device special for a rice test field is characterized by comprising a rack, wherein a rice transplanting execution device, a distance control device and a power device are arranged on the rack, the rice transplanting execution device is used for grabbing rice seedlings to be inserted into a farmland, the distance control device is used for controlling the grabbing frequency of the rice transplanting execution device, and the power device is used for driving the automatic rice transplanting device to move in the field; the power device comprises a first motor, a second motor, a first roller, a second roller, a third roller and a fourth roller, wherein the first roller and the second roller are arranged on the front side and the rear side of the bottom of the rack, the third roller and the fourth roller are arranged on the left side and the right side of the bottom of the rack, the first motor drives the first roller and the second roller to rotate, and the second motor drives the third roller and the fourth roller to rotate.
2. The automatic miniature rice transplanting device for the rice test bed as claimed in claim 1, wherein the rice transplanting actuator comprises a limiting plate, a fixed wheel, a connecting plate and a rice transplanting claw, one end of the connecting plate is fixed on the edge of the fixed wheel, the other end of the connecting plate is rotatably connected with the rice transplanting claw, the limiting plate is of a right-angle hollow bracket structure, one end of the limiting plate is fixedly arranged on the top of the frame, and the other end of the limiting plate is used for limiting the position path of the rice transplanting claw.
3. The automatic miniature rice transplanting device as claimed in claim 2, wherein the transplanting claw is provided with a limiting groove, the limiting plate is provided with an avoiding hole for the transplanting claw to pass through and a limiting rod for cooperating with the limiting groove, and the limiting rod moves in the limiting groove.
4. The automatic miniature rice transplanting device as recited in claim 2, wherein the rice transplanting actuator further comprises a rice seedling tray, a stepping motor, a transmission gear and a rack, the rice seedling tray is disposed in front of the frame for placing the rice seedlings to be transplanted, the stepping motor is connected to the transmission gear, the transmission gear is engaged with the rack and disposed together on the upper edge of the rice seedling tray, and the rice seedling tray is obliquely fixed on one side of the frame.
5. The miniature automatic rice transplanting device for the rice test bed as claimed in claim 2, wherein the rice transplanting execution device further comprises a photoelectric gate, the photoelectric gate is used for detecting the transplanting times of the transplanting claws, and the photoelectric gate is further connected with a control device, and the control device controls the first motor, the second motor and the stepping motor to work.
6. The miniature automatic rice transplanting device for the rice test field as claimed in claim 2, wherein the distance control device comprises a distance control wheel and a transmission device, the distance control wheel is connected with the transmission device, the transmission device is connected with the fixed wheel, and the rotation direction of the distance control wheel is the same as the rotation direction of the first roller and the second roller.
7. The miniature automatic rice transplanting device for the rice test field as claimed in claim 1, wherein the first roller and the second roller have the same width, the third roller and the fourth roller have the same width, and the first roller, the second roller, the third roller and the fourth roller have a quadrilateral enclosing structure.
8. A control circuit of a miniature automatic rice transplanting device special for a rice test field is provided with auxiliary positioning plates around a rice transplanting area and is characterized by comprising
The photoelectric sensor module is used for capturing and identifying the auxiliary positioning plate and sending an identification signal;
the control module is used for responding to the identification signal and sending out a control signal;
a relay module for controlling the rotation of the first motor and the second motor according to any one of claims 1 to 7.
9. The control circuit of the automatic rice transplanting device for the rice test field according to claim 8, wherein the photosensor module comprises a first photosensor, a second photosensor and a third photosensor, the first photosensor is disposed on the frame at the front end of the rice transplanting device, the second photosensor is disposed on the frame at the rear end of the rice transplanting device, and the third photosensor is disposed on a side of the rice transplanting device away from the rice transplanting actuator according to any one of claims 1 to 7.
10. The control circuit of the miniature automatic rice transplanting device special for the rice test field as claimed in claim 8, wherein the relay module comprises five relay units for controlling the first motor and the second motor to rotate forward and backward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022384501.8U CN214228861U (en) | 2020-10-23 | 2020-10-23 | Special miniature automatic rice transplanting device for rice test field and control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022384501.8U CN214228861U (en) | 2020-10-23 | 2020-10-23 | Special miniature automatic rice transplanting device for rice test field and control circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214228861U true CN214228861U (en) | 2021-09-21 |
Family
ID=77730131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022384501.8U Expired - Fee Related CN214228861U (en) | 2020-10-23 | 2020-10-23 | Special miniature automatic rice transplanting device for rice test field and control circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214228861U (en) |
-
2020
- 2020-10-23 CN CN202022384501.8U patent/CN214228861U/en not_active Expired - Fee Related
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Granted publication date: 20210921 |