CN211500700U - Electromechanical device convenient to maintain for tunnel ventilation system - Google Patents
Electromechanical device convenient to maintain for tunnel ventilation system Download PDFInfo
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- CN211500700U CN211500700U CN201922202246.8U CN201922202246U CN211500700U CN 211500700 U CN211500700 U CN 211500700U CN 201922202246 U CN201922202246 U CN 201922202246U CN 211500700 U CN211500700 U CN 211500700U
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Abstract
The utility model relates to an electromechanical device which is used for a tunnel ventilation system and is convenient to maintain, which comprises a driving motor and a transmission shaft, the driving motor is in transmission connection with one end of the transmission shaft, the transmission shaft is provided with a wind mechanism, the wind mechanism is arranged at one end of the transmission shaft far away from the driving motor and comprises a rotating box and three wind power components, the wind power component comprises a through hole, a connecting hole, blades, a fixed pipe, a movable disk, a connecting line, a fixed pulley, an auxiliary pipe, an extrusion disk, two limiting blocks and two springs, the through hole is arranged on the periphery of the rotating box, the axis of the through hole is vertical to and intersected with the axis of the rotating box, the fixed pipe and the movable disc are coaxially arranged with the through hole, the fixed pipe penetrates through the through hole, the fixed pipe is hermetically and fixedly connected with the inner wall of the through hole, the electromechanical device for the tunnel ventilation system convenient to maintain realizes the ventilation function through a wind mechanism.
Description
Technical Field
The utility model relates to an electromechanical field, in particular to an electromechanical device convenient to maintain for tunnel ventilation system.
Background
Electromechanical technology and electronic technology are combined and applied into a whole, wherein a fan is one of electromechanical devices, the habit of a fan on gas compression and gas conveying machinery is short, and the fan is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and ventilation and air induction of boilers and industrial furnaces.
Most of rotary vanes on the existing fan are large in size, inconvenience is caused in the process of replacing or maintaining the rotary vanes, and convenience in replacement is reduced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: to overcome the deficiencies of the prior art, an electromechanical device for a tunnel ventilation system is provided that is easy to maintain.
The utility model provides a technical scheme that its technical problem adopted is: an electromechanical device convenient to maintain for a tunnel ventilation system comprises a driving motor and a transmission shaft, wherein the driving motor is in transmission connection with one end of the transmission shaft, the transmission shaft is provided with a wind mechanism, and the wind mechanism is arranged at one end, far away from the driving motor, of the transmission shaft;
the wind mechanism comprises a rotating box and three wind components, the rotating box is cylindrical, a mounting hole is formed in the rotating box, the mounting hole and the rotating box are coaxially arranged with a transmission shaft, the aperture of the mounting hole is smaller than the inner diameter of the rotating box and equal to the diameter of the transmission shaft, the transmission shaft penetrates through the mounting hole, the transmission shaft is hermetically and fixedly connected with the inner wall of the mounting hole, one end of the transmission shaft, far away from a driving motor, and the inner wall of the rotating box, far away from the mounting hole, are circumferentially and uniformly distributed by taking the axis of the transmission shaft as the center;
the wind power assembly comprises a through hole, a connecting hole, blades, a fixed pipe, a movable disk, a connecting line, a fixed pulley, an auxiliary pipe, an extrusion disk, two limit blocks and two springs, the through hole is arranged on the periphery of the rotating box, the axis of the through hole is perpendicular to and intersected with the axis of the rotating box, the fixed pipe and the movable disk are coaxially arranged with the through hole, the fixed pipe penetrates through the through hole, the fixed pipe is sealed and fixedly connected with the inner wall of the through hole, the blades, the movable disk and the limit blocks are all arranged in the fixed pipe, the movable disk is in sliding and sealing connection with the inner wall of the fixed pipe, the movable disk is positioned between the two limit blocks, the two limit blocks are respectively fixed at two ends in the fixed pipe, the movable disk is abutted against the limit blocks close to the transmission shaft, a gap is arranged between the movable disk and the limit blocks far away from the, the connecting hole is arranged on one side of the rotating box, which is close to the driving motor, the axis of the connecting hole is parallel to the transmission shaft with the auxiliary pipe, the auxiliary pipe is positioned between the driving motor and the rotating box, one end of the auxiliary pipe, which is far away from the driving motor, is inserted into the connecting hole, the auxiliary pipe is sealed and fixedly connected with the inner wall of the connecting hole, the extrusion disc is arranged in the auxiliary pipe and matched with the auxiliary pipe, the extrusion disc is in sliding and sealing connection with the inner wall of the auxiliary pipe, one end of the connecting wire is fixed on one side of the extrusion disc, which is far away from the driving motor, the other end of the connecting wire is fixed on one side of the moving disc, which is close to the transmission shaft, by bypassing the fixed pulley, the fixed pulley is fixed on the inner wall of the rotating box, the spring is positioned in the auxiliary pipe, and is circumferentially, the extrusion disc is connected with one end of the auxiliary pipe, which is far away from the driving motor, through a spring.
As preferred, in order to promote the dust removal effect, the one end of each auxiliary pipe that is close to driving motor all is equipped with auxiliary assembly, auxiliary assembly includes power unit, rotating tube, bearing, sealed dish and nozzle, rotating tube and the coaxial setting of auxiliary pipe, the internal diameter of rotating tube equals with the external diameter of auxiliary pipe, the one end that is close to driving motor of auxiliary pipe inserts in the rotating tube, the inner wall slip and sealing connection of auxiliary pipe and rotating tube, the bearing sets up in the rotating tube and is located between auxiliary pipe and the driving motor, the outer lane of bearing is installed on the inner wall of rotating tube, the inner circle and the auxiliary pipe fixed connection of bearing, sealed dish and the sealed and fixed connection of the one end that is close to driving motor of rotating tube, be equipped with the pilot hole on the sealed dish, be equipped with the clearance between the axis of pilot hole and the axis of auxiliary pipe are parallel, the aperture of pilot hole is less than the internal diameter of auxiliary tube, the nozzle is installed in the pilot hole, power unit sets up in the auxiliary tube and is located one side that is close to driving motor of extrusion dish, power unit drive rotating-tube transmission is connected.
Preferably, in order to drive the rotating pipe to rotate, the power unit comprises a fan blade and a power shaft, the power shaft and the auxiliary pipe are coaxially arranged, one end of the power shaft is fixed on one side, away from the driving motor, of the sealing disc, and the fan blade is installed at the other end of the power shaft.
Preferably, in order to reduce a gap between the auxiliary tube and the rotary tube, an inner wall of the auxiliary tube is coated with a sealing grease.
Preferably, in order to realize buffering and vibration reduction, the limiting block is made of rubber.
Preferably, the drive motor is a servo motor in order to increase the drive force of the drive motor.
The beneficial effects of the utility model are that, this an electromechanical device for maintenance of being convenient for tunnel ventilation system has realized the function of ventilation through wind energy mechanism, compares with current wind energy mechanism, and this wind energy mechanism has still realized the function of being convenient for to accomodate and maintain, moreover, has still realized the function of removing dust through auxiliary assembly to promote the dust removal scope through the rotation of nozzle 15, the practicality is stronger.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Figure 1 is a schematic structural view of an electromechanical device for tunnel ventilation systems that facilitates maintenance in accordance with the present invention;
figure 2 is a schematic structural view of the auxiliary components of the electromechanical device for facilitating maintenance of tunnel ventilation systems of the present invention;
in the figure: 1. the device comprises a driving motor, 2. a transmission shaft, 3. a rotating box, 4. blades, 5. a fixed pipe, 6. a moving disc, 7. a connecting line, 8. a fixed pulley, 9. an auxiliary pipe, 10. an extrusion disc, 11. a limiting block, 12. a spring, 13. a rotating pipe, 14. a sealing disc, 15. a nozzle, 16. blades, 17. a power shaft and 18. a bearing.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, an electromechanical device for a tunnel ventilation system, which is convenient to maintain, includes a driving motor 1 and a transmission shaft 2, the driving motor 1 is in transmission connection with one end of the transmission shaft 2, a wind mechanism is arranged on the transmission shaft 2, and the wind mechanism is arranged at one end of the transmission shaft 2, which is far away from the driving motor 1;
the wind mechanism comprises a rotating box 3 and three wind components, wherein the rotating box 3 is cylindrical, a mounting hole is formed in the rotating box 3, the mounting hole and the rotating box 3 are coaxially arranged with a transmission shaft 2, the aperture of the mounting hole is smaller than the inner diameter of the rotating box 3 and is equal to the diameter of the transmission shaft 2, the transmission shaft 2 penetrates through the mounting hole, the transmission shaft 2 is hermetically and fixedly connected with the inner wall of the mounting hole, one end of the transmission shaft 2, far away from a driving motor 1, and the inner wall of the rotating box 3, far away from the mounting hole, are circumferentially and uniformly distributed by taking the axis of the transmission shaft 2 as a center;
the wind power assembly comprises a through hole, a connecting hole, a blade 4, a fixed pipe 5, a movable disk 6, a connecting line 7, a fixed pulley 8, an auxiliary pipe 9, a squeezing disk 10, two limit blocks 11 and two springs 12, wherein the through hole is arranged on the periphery of the rotating box 3, the axis of the through hole is perpendicular to and intersected with the axis of the rotating box 3, the fixed pipe 5 and the movable disk 6 are coaxially arranged with the through hole, the fixed pipe 5 penetrates through the through hole, the fixed pipe 5 is sealed and fixedly connected with the inner wall of the through hole, the blade 4, the movable disk 6 and the limit blocks 11 are arranged in the fixed pipe 5, the movable disk 6 is slidably and hermetically connected with the inner wall of the fixed pipe 5, the movable disk 6 is positioned between the two limit blocks 11, the two limit blocks 11 are respectively fixed at two ends in the fixed pipe 5, the movable disk 6 is abutted against the limit blocks 11 close to the transmission shaft 2, a gap is arranged between the movable disk 6 and, the blade 4 is fixed in one side of keeping away from transmission shaft 2 of removal dish 6, the connecting hole sets up in the one side that is close to driving motor 1 of rotation case 3, the axis of connecting hole all is parallel with transmission shaft 2 with auxiliary tube 9, auxiliary tube 9 is located driving motor 1 and rotates between the case 3, the one end of keeping away from driving motor 1 of auxiliary tube 9 inserts in the connecting hole, the sealed and fixed connection of inner wall of auxiliary tube 9 and connecting hole, extrusion dish 10 sets up in auxiliary tube 9 and matches with auxiliary tube 9, extrusion dish 10 slides and sealing connection with the inner wall of auxiliary tube 9, the one end of connecting wire 7 is fixed in one side of keeping away from driving motor 1 of extrusion dish 10, the other end of connecting wire 7 is walked around fixed pulley 8 and is fixed in the one side that is close to transmission shaft 2 of removal dish 6, fixed pulley 8 is fixed on the inner wall of rotation case 3, the spring 12 is positioned in the auxiliary pipe 9, the spring 12 is circumferentially and uniformly distributed on one side of the extrusion disc 10 far away from the driving motor 1 by taking the axis of the auxiliary pipe 9 as a center, and the extrusion disc 10 is connected with one end of the auxiliary pipe 9 far away from the driving motor 1 through the spring 12.
The device is actually installed in a shell of a fan, the device is started by a driving motor 1, a transmission shaft 2 drives a rotating box 3 to rotate, the rotating box 3 rotates to drive a moving disc 6 and blades 4 to rotate through a fixed pipe 5, the moving disc 6 moves towards the direction far away from the transmission shaft 2 under the action of centrifugal force, the moving of the moving disc 6 drives the blades 4 to synchronously move, the moving disc 6 is abutted against a limiting block 11 far away from the transmission shaft 2, air is circulated through the rotation of the blades 4, the moving disc 6 moves to pull a squeezing disc 10 to move towards the direction far away from the driving motor 1 through a connecting wire 7, a spring 12 is compressed, after the driving motor 1 stops operating, the squeezing disc 10 resets under the elastic action of the spring 12, the resetting of the squeezing disc 10 drives the moving disc 6 and the blades 4 to reset through the connecting wire 7, and the blades 4 are moved into the fixed pipe 5, the function of taking in blade 4 has been played, has reduced the volume, has improved the convenience of maintaining, and the removal through extrusion dish 10 makes the air in the auxiliary tube 9 spout towards driving motor 1, has realized cleaing away the function of dust on driving motor 1, has realized removing dust.
As shown in fig. 2, each auxiliary pipe 9 is provided with an auxiliary component at one end close to the driving motor 1, the auxiliary component comprises a power unit, a rotating pipe 13, a bearing 18, a sealing disc 14 and a nozzle 15, the rotating pipe 13 is coaxially arranged with the auxiliary pipe 9, the inner diameter of the rotating pipe 13 is equal to the outer diameter of the auxiliary pipe 9, one end of the auxiliary pipe 9 close to the driving motor 1 is inserted into the rotating pipe 13, the auxiliary pipe 9 is connected with the inner wall of the rotating pipe 13 in a sliding and sealing manner, the bearing 18 is arranged in the rotating pipe 13 and is located between the auxiliary pipe 9 and the driving motor 1, the outer ring of the bearing 18 is arranged on the inner wall of the rotating pipe 13, the inner ring of the bearing 18 is fixedly connected with the auxiliary pipe 9, the sealing disc 14 is connected with one end of the rotating pipe 13 close to the driving motor 1 in a sealing manner, a fitting hole is arranged on the sealing disc 14, the axis of the fitting hole is parallel to the axis of the, the aperture of pilot hole is less than the internal diameter of auxiliary tube 9, nozzle 15 is installed in the pilot hole, power unit sets up in the auxiliary tube 9 and is located one side that is close to driving motor 1 of extrusion dish 10, power unit drive rotating tube 13 transmission is connected.
The power unit driving rotation tube 13 is rotated by the support of the bearing 18 by the flow of air in the auxiliary tube 9 as a driving force, the rotation of the rotation disk drives the nozzle 15 to rotate around the axis of the auxiliary tube 9 through the seal disk 14, and here, the flow rate of air applied to the driving motor 1 can be increased by the nozzle 15, thereby increasing the dust removing effect, and the dust removing range can be increased by the rotation of the nozzle 15.
Preferably, in order to drive the rotary pipe 13 to rotate, the power unit comprises a fan blade 16 and a power shaft 17, the power shaft 17 is arranged coaxially with the auxiliary pipe 9, one end of the power shaft 17 is fixed on the side of the sealing disc 14 far away from the driving motor 1, and the fan blade 16 is arranged at the other end of the power shaft 17.
The fan blades 16 are rotated by the flow of air as a driving force, the rotation of the fan blades 16 rotates the seal disk 14 through the power shaft 17, and the rotation of the seal disk 14 rotates the rotary pipe 13 under the supporting action of the bearing 18.
Preferably, in order to reduce the gap between the auxiliary tube 9 and the rotating tube 13, the inner wall of the auxiliary tube 9 is coated with sealing grease.
The sealing grease has the function of reducing the gap between the auxiliary tube 9 and the rotating tube 13 and improving the sealing property.
Preferably, in order to achieve buffering and vibration reduction, the limiting block 11 is made of rubber.
The rubber texture is softer, and the impact force generated when the moving disc 6 abuts against the limiting block 11 can be reduced.
Preferably, the driving motor 1 is a servo motor in order to increase the driving force of the driving motor 1.
The servo motor has a characteristic of strong overload capability, so that the driving force of the driving motor 1 can be improved.
The driving motor 1 is started, the transmission shaft 2 drives the rotating box 3 to rotate, the rotating box 3 drives the moving disc 6 and the blades 4 to rotate through the fixed pipe 5, the moving disc 6 moves towards the direction far away from the transmission shaft 2 under the action of centrifugal force, the moving of the moving disc 6 drives the blades 4 to synchronously move, the moving disc 6 is abutted against the limiting block 11 far away from the transmission shaft 2, air is circulated through the rotation of the blades 4, the moving disc 6 moves through the connecting line 7 to pull the extrusion disc 10 to move towards the direction far away from the driving motor 1, the springs 12 are compressed, after the driving motor 1 stops operating, the extrusion disc 10 is reset under the elastic action of the springs 12, the reset of the extrusion disc 10 drives the moving disc 6 and the blades 4 to reset through the connecting line 7, the blades 4 are moved into the fixed pipe 5, and the function of containing the blades 4 is achieved, the volume is reduced, the convenience of maintenance is improved, the air in the auxiliary pipe 9 is sprayed out from the nozzle 15 towards the driving motor 1 through the movement of the extrusion disc 10, dust removal is realized, meanwhile, the fan blades 16 are rotated as driving force through the flow of the air, the rotation of the fan blades 16 drives the sealing disc 14 to rotate through the power shaft 17, the rotating pipe 13 is driven to rotate under the supporting effect of the bearing 18 through the rotation of the sealing disc 14, in addition, the rotation of the sealing disc 14 drives the nozzle 15 to rotate around the axis of the auxiliary pipe 9, and the dust removal range can be improved.
Compared with the prior art, this an electromechanical device for tunnel ventilation system's be convenient for maintain has realized the function of ventilation through wind mechanism, compares with current wind mechanism, and this wind mechanism has still realized the function of being convenient for accomodate and maintain, moreover, has still realized the function of removing dust through auxiliary assembly to promote the dust removal scope through the rotation of nozzle 15, the practicality is stronger.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. The electromechanical device used for a tunnel ventilation system and convenient to maintain comprises a driving motor (1) and a transmission shaft (2), wherein the driving motor (1) is in transmission connection with one end of the transmission shaft (2), and is characterized in that a wind mechanism is arranged on the transmission shaft (2) and is arranged at one end, far away from the driving motor (1), of the transmission shaft (2);
the wind power mechanism comprises a rotating box (3) and three wind power assemblies, the rotating box (3) is cylindrical, a mounting hole is formed in the rotating box (3), the mounting hole and the rotating box (3) are coaxially arranged with a transmission shaft (2), the aperture of the mounting hole is smaller than the inner diameter of the rotating box (3) and equal to the diameter of the transmission shaft (2), the transmission shaft (2) penetrates through the mounting hole, the transmission shaft (2) is hermetically and fixedly connected with the inner wall of the mounting hole, one end, far away from a driving motor (1), of the transmission shaft (2) is arranged on the inner wall, far away from one side of the mounting hole, of the rotating box (3), and the wind power assemblies are uniformly distributed along the axis of the transmission shaft (2) in the circumferential direction of the center;
the wind power assembly comprises a through hole, a connecting hole, blades (4), a fixed pipe (5), a movable disc (6), a connecting line (7), a fixed pulley (8), an auxiliary pipe (9), an extrusion disc (10), two limit blocks (11) and two springs (12), wherein the through hole is formed in the periphery of the rotating box (3), the axis of the through hole is perpendicular to and intersected with the axis of the rotating box (3), the fixed pipe (5) and the movable disc (6) are coaxially arranged with the through hole, the fixed pipe (5) penetrates through the through hole, the fixed pipe (5) is sealed and fixedly connected with the inner wall of the through hole, the blades (4), the movable disc (6) and the limit blocks (11) are all arranged in the fixed pipe (5), the movable disc (6) is connected with the inner wall of the fixed pipe (5) in a sliding and sealing manner, the movable disc (6) is located between the two limit blocks (11), two limit blocks (11) are respectively fixed at two ends in the fixed pipe (5), the movable disc (6) is abutted with the limit block (11) close to the transmission shaft (2), a gap is arranged between the movable disc (6) and the limit block (11) far away from the transmission shaft (2), the blade (4) is fixed at one side of the movable disc (6) far away from the transmission shaft (2), the connecting hole is arranged at one side of the rotating box (3) near the driving motor (1), the axis of the connecting hole and the auxiliary pipe (9) are both parallel to the transmission shaft (2), the auxiliary pipe (9) is arranged between the driving motor (1) and the rotating box (3), one end of the auxiliary pipe (9) far away from the driving motor (1) is inserted into the connecting hole, the auxiliary pipe (9) is sealed and fixedly connected with the inner wall of the connecting hole, the extrusion disc (10) is arranged in the auxiliary pipe (9) and is matched with the auxiliary pipe (9), the inner wall of extrusion dish (10) and auxiliary tube (9) slides and sealing connection, the one end of connecting wire (7) is fixed in one side of keeping away from driving motor (1) of extrusion dish (10), the other end of connecting wire (7) is walked around fixed pulley (8) and is fixed in the one side that is close to transmission shaft (2) of removal dish (6), fixed pulley (8) are fixed on the inner wall of rotating case (3), spring (12) are located auxiliary tube (9), spring (12) use the axis of auxiliary tube (9) as one side of keeping away from driving motor (1) of center circumference evenly distributed in extrusion dish (10), extrusion dish (10) are connected through the one end of keeping away from driving motor (1) of spring (12) and auxiliary tube (9).
2. The maintenance-convenient electromechanical device for a tunnel ventilation system according to claim 1, wherein an end of each auxiliary tube (9) adjacent to the driving motor (1) is provided with an auxiliary assembly including a power unit, a rotating tube (13), a bearing (18), a sealing disc (14) and a nozzle (15), the rotating tube (13) is coaxially disposed with the auxiliary tube (9), an inner diameter of the rotating tube (13) is equal to an outer diameter of the auxiliary tube (9), an end of the auxiliary tube (9) adjacent to the driving motor (1) is inserted into the rotating tube (13), the auxiliary tube (9) is slidably and sealingly connected with an inner wall of the rotating tube (13), the bearing (18) is disposed in the rotating tube (13) between the auxiliary tube (9) and the driving motor (1), an outer race of the bearing (18) is mounted on the inner wall of the rotating tube (13), the inner circle and the auxiliary tube (9) fixed connection of bearing (18), sealed dish (14) and the sealed and fixed connection of one end that is close to driving motor (1) of rotating tube (13), be equipped with the pilot hole on sealed dish (14), the axis of pilot hole is parallel with the axis of auxiliary tube (9) and is equipped with the clearance between, the aperture of pilot hole is less than the internal diameter of auxiliary tube (9), nozzle (15) are installed in the pilot hole, power unit sets up in auxiliary tube (9) and is located one side that is close to driving motor (1) of extrusion dish (10), power unit drive rotating tube (13) transmission is connected.
3. The electromechanical device for the tunnel ventilation system for facilitating maintenance according to claim 2, wherein said power unit comprises a fan blade (16) and a power shaft (17), said power shaft (17) being disposed coaxially with the auxiliary tube (9), one end of said power shaft (17) being fixed to the side of the sealing plate (14) remote from the driving motor (1), said fan blade (16) being mounted at the other end of the power shaft (17).
4. The electromechanical device for the tunnel ventilation system which facilitates maintenance according to claim 1, characterized in that the inner wall of said auxiliary tube (9) is coated with a sealing grease.
5. The electromechanical device for the tunnel ventilation system which is easy to maintain according to claim 1, characterized in that the material of said stop blocks (11) is rubber.
6. The electromechanical device for the tunnel ventilation system which is easy to maintain according to claim 1, characterized in that said driving motor (1) is a servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922202246.8U CN211500700U (en) | 2019-12-10 | 2019-12-10 | Electromechanical device convenient to maintain for tunnel ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922202246.8U CN211500700U (en) | 2019-12-10 | 2019-12-10 | Electromechanical device convenient to maintain for tunnel ventilation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211500700U true CN211500700U (en) | 2020-09-15 |
Family
ID=72414655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922202246.8U Expired - Fee Related CN211500700U (en) | 2019-12-10 | 2019-12-10 | Electromechanical device convenient to maintain for tunnel ventilation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211500700U (en) |
-
2019
- 2019-12-10 CN CN201922202246.8U patent/CN211500700U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200915 Termination date: 20211210 |