CN210557520U - Device for automatically transferring upper frame of excavator from material preparation assembly line to assembly line - Google Patents
Device for automatically transferring upper frame of excavator from material preparation assembly line to assembly line Download PDFInfo
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- CN210557520U CN210557520U CN201921011197.3U CN201921011197U CN210557520U CN 210557520 U CN210557520 U CN 210557520U CN 201921011197 U CN201921011197 U CN 201921011197U CN 210557520 U CN210557520 U CN 210557520U
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- excavator
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Abstract
The utility model discloses an automatic device of transporting to assembly line from the assembly line of prepareeing material of frame on excavator, it belongs to engineering machine tool field. The automatic logistics assembly mainly comprises an automatic logistics assembly, the automatic logistics assembly comprises a truss structure, a transfer mechanism is arranged on the truss structure, an automatic material preparation assembly line is arranged on one side of the bottom of the truss structure, the automatic material preparation assembly line comprises a plate chain assembly, a main transmission mechanism assembly and a driven mechanism assembly are arranged on the plate chain assembly, an automatic wire feeding assembly is arranged on the other side of the bottom of the truss structure, the automatic wire feeding assembly comprises a guide rail system, and an automatic wire feeding trolley is arranged on the guide rail system. The utility model discloses a frame is from the off-line district that sprays paint to main assembly line's full automation, unmanned transportation on the large-tonnage excavator, has improved work efficiency greatly, has improved defects such as potential safety hazard and tail gas pollution. The utility model discloses the automatic transfer of frame on the mainly used excavator.
Description
Technical Field
The utility model belongs to the engineering machine tool field, specifically speaking especially relates to an automatic device of transporting to assembly line from the assembly line of prepareeing material of excavator upper carriage.
Background
After the excavator upper frame is painted and is offline, a forklift is required to be used for transferring the complete machine wire harness to the edge of the main assembly line for partial assembly, and after the wire harness is completely assembled, the excavator is manually used for hoisting the upper frame to the assembly line for assembly. When the travelling crane rotates to the upper frame, workers need to hang the lifting appliance around the frame due to the fact that the size of the upper frame is large, peripheral material frames are easy to collide due to poor vision in the process of rotating, and potential safety hazards exist. The operation mode increases the number of operators and has low working efficiency; meanwhile, the fuel forklift is adopted for transferring, so that energy consumption and tail gas emission are increased.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned defect, provide an automatic device of transporting to the assembly line from the assembly line of prepareeing material of frame on the excavator, it has realized that the frame is from the full automation of the lower line district that sprays paint to main assembly line, unmanned transportation on the large-tonnage excavator, has improved work efficiency greatly, has reduced operation personnel quantity, has reduced the recruitment cost, has improved defects such as potential safety hazard and tail gas pollution.
The excavator on automatic device of transporting to assembly line from the assembly line of prepareeing material of frame, including the automatic commodity circulation assembly of putting on the shelf, the automatic commodity circulation assembly of putting on the shelf includes the truss structure, be equipped with transport mechanism in the truss structure, truss structure bottom one side is equipped with the automatic assembly line of prepareeing material of putting on the shelf, the automatic assembly line of prepareeing material of putting on the shelf includes the plate chain assembly, be equipped with main drive mechanism assembly and follower assembly on the plate chain assembly, truss structure bottom opposite side is equipped with the automatic assembly of putting on the shelf, the automatic assembly of putting on the shelf includes the guide rail system, be equipped with the automatic dolly.
Furthermore, the main transmission mechanism assembly comprises a driving rack, a first motor speed reducer and a main transmission shaft are arranged on the driving rack, a driving chain wheel is respectively arranged on the first motor speed reducer and the main transmission shaft, a driven chain wheel A is arranged on the main transmission shaft, and the first motor speed reducer is connected with the main transmission shaft through the driving chain wheel and a chain.
Furthermore, the driven mechanism assembly comprises a driven rack, a driven shaft is arranged on the driven rack, a driven chain wheel B is arranged on the driven shaft, and the driven chain wheel B is connected with the driven shaft through a key.
Furthermore, the transfer mechanism comprises a walking device, a lifting device is arranged at the bottom of the walking device, a clamping device is arranged at the bottom of the lifting device, the walking device comprises a follow-up frame, a driving wheel and a driven wheel are arranged at the top of the follow-up frame, and the follow-up frame is connected with the truss structure through the driving wheel and the driven wheel; the clamping device comprises a sliding support, a clamping oil cylinder and a sliding guide rail are arranged on the sliding support, a clamping jaw is arranged on the sliding guide rail, and the clamping jaw is connected with the extending end of the clamping oil cylinder; the lifting device comprises a lifting oil cylinder and a guide optical axis, and the sliding support is connected with the follow-up frame through the lifting oil cylinder and the guide optical axis.
Furthermore, the guide rail system comprises a fixed guide rail and a movable guide rail, and the movable guide rail is in butt joint with the fixed guide rail through a cylinder and a linear guide rail group.
Further, the automatic transfer trolley for the upper frame comprises a trolley frame, a motor speed reducer II and a jacking mechanism are arranged on the trolley frame, a transmission mechanism is arranged at the bottom of the trolley frame and is connected with the motor speed reducer II through a double-row chain wheel and a double-row chain, and the jacking mechanism is connected with the trolley frame through a jacking oil cylinder and a guide optical axis.
Further, an alarm system is also included, the alarm system including an operation indicator light, a tri-color alarm light, and a speaker.
And the automatic material preparation assembly line, the automatic logistics assembly, the automatic on-line assembly and the alarm system are respectively connected with the electric control system.
Further, the electric control system comprises a Programmable Logic Controller (PLC) and a wireless communication system.
Furthermore, a proximity switch, a photoelectric switch and a laser ranging sensor are respectively arranged on the automatic material preparation assembly line, the automatic logistics assembly and the automatic line feeding assembly, and the proximity switch, the photoelectric switch and the laser ranging sensor are matched with a Programmable Logic Controller (PLC).
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses simple structure, through the automatic assembly line of prepareeing material of putting on the shelf, automatic commodity circulation assembly of putting on the shelf and the automatic assembly of putting on the shelf that mutually support, realized that excavator put on the shelf carries out the order circulation according to assembly line plan on the assembly line of prepareeing material, replaced former driving and fork truck transportation mode, avoided the emergence of incident, liberated the manpower, improved production efficiency greatly, full flow tail gas zero release, effectively improved the operation environment in assembly shop, reduced the workshop noise;
2. the utility model discloses an electrical system combines laser range finding sensor, photoelectric switch and proximity switch, carries out the accurate positioning, has realized that the automatic of excavator upper carriage snatchs, translation, goes up and down and automatic transport to main assembly line, utilizes the machine to replace the manual work, realizes the automation mechanized operation;
3. the automatic upper frame assembly is matched with the movable guide rail through the automatic upper frame transfer trolley and the fixed guide rail, so that the problem of rail crossing between a main assembly line and the automatic upper frame transfer trolley is solved, automatic transfer to the main assembly line and accurate positioning after the assembly of the upper frame are completed are realized, and a good foundation convenient for locating is provided for subsequent automatic assembly;
4. the wireless communication system is adopted among the automatic material preparation assembly line, the automatic logistics assembly and the automatic line feeding assembly, the fact that the previous upper frame assembly finishes leaving the position of the material feeding assembly is achieved, after the next upper frame reaches the preset position of the material preparation assembly line, an instruction is automatically sent to the automatic logistics assembly, meanwhile, in the operation process of the automatic line feeding assembly, the main assembly line is in a locking stop state, the safety of the whole process is guaranteed, manpower is effectively liberated, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an automatic material preparation line on a shelf;
FIG. 3 is a schematic structural view of the main transmission assembly;
FIG. 4 is a schematic view of a follower assembly;
FIG. 5 is a schematic structural view of an automatic racking logistics assembly;
FIG. 6 is a schematic structural view of an automatic loading assembly;
FIG. 7 is a schematic diagram of the system of the present invention;
fig. 8 is a partially enlarged view of a portion a in fig. 5.
In the figure, 1, an automatic material preparation assembly line is erected; 2. an automatic logistics assembly is put on shelf; 3. an automatic on-line assembly is put on the shelf; 4. an electronic control system; 5. an alarm system; 6. a partially installed position; 7. a main assembly line; 11. a main drive mechanism assembly; 12. a driven mechanism assembly; 13. a plate link chain assembly; 21. a truss structure; 22. a clamping device; 23. a lifting device; 24. a traveling device; 31. an automatic transfer trolley is put on the shelf; 32. a rail system; 111. an active frame; 112. a first motor speed reducer; 113. a main drive shaft; 114. a drive sprocket; 115. a driven sprocket A; 121. a driven frame; 122. a driven shaft; 123. a driven sprocket B; 131. a plate chain mounting rack; 132. a plate link chain; 133. a polyurethane board; 211. a column; 212. a cross beam; 221. a clamping jaw; 222. a sliding support; 223. clamping the oil cylinder; 224. a sliding guide rail; 231. a lift cylinder; 232. guiding the optical axis; 241. a driving wheel; 242. a driven wheel; 243. a follower frame; 311. a frame; 312. a motor speed reducer II; 313. a transmission mechanism; 314. a jacking mechanism; 321. fixing the guide rail; 322. the guide rail is moved.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in figure 1, the device for automatically transferring the upper frame of the excavator from the material preparation assembly line to the assembly line comprises an upper automatic logistics assembly 2, wherein the upper automatic logistics assembly 2 comprises a truss structure 21, a transfer mechanism is arranged on the truss structure 21, and an upper automatic material preparation assembly line 1 is arranged on one side of the bottom of the truss structure 21.
As shown in fig. 2, the racking automatic material preparation assembly line 1 comprises a plate chain assembly 13, a main transmission mechanism assembly 11 and a driven mechanism assembly 12 are arranged on the plate chain assembly 13, a racking automatic feeding assembly 3 is arranged on the other side of the bottom of a truss structure 21, the racking automatic feeding assembly 3 comprises a guide rail system 32, and a racking automatic transfer trolley 31 is arranged on the guide rail system 32; the plate link chain assembly 13 comprises a plate link chain mounting rack 131, a plate link chain 132 and a polyurethane plate 133, wherein the plate link chain 132 is connected with the polyurethane plate 133 through screws and has the function of preventing the upper frame from directly contacting the plate link chain 132 to damage a painted surface.
As shown in fig. 3, the main transmission mechanism assembly 11 includes a driving frame 111, a first motor reducer 112 and a main transmission shaft 113 are disposed on the driving frame 111, a driving sprocket 114 is disposed on the first motor reducer 112 and the main transmission shaft 113, a driven sprocket a115 is disposed on the main transmission shaft 113, and the first motor reducer 112 is connected to the main transmission shaft 113 through the driving sprocket 114 and a chain. The driving sprocket 114 is a double-row sprocket, and the driving sprocket 114 and the driven sprocket a115 are connected to the main drive shaft 113 through keys, respectively.
As shown in fig. 4, the driven mechanism assembly 12 includes a driven frame 121, a driven shaft 122 is disposed on the driven frame 121, a driven sprocket B123 is disposed on the driven shaft 122, and the driven sprocket B123 is connected to the driven shaft 122 through a key.
As shown in fig. 5 and 8, the truss structure 21 includes a vertical column 211 and a cross beam 212, the transfer mechanism includes a traveling device 24, a lifting device 23 is disposed at the bottom of the traveling device 24, a clamping device 22 is disposed at the bottom of the lifting device 23, the traveling device 24 includes a follow-up frame 243, a driving wheel 241 and a driven wheel 242 are disposed at the top of the follow-up frame 243, and the follow-up frame 243 is connected with the cross beam 212 on the truss structure 21 through the driving wheel 241 and the driven wheel 242; the clamping device 22 comprises a sliding support 222, a clamping oil cylinder 223 and a sliding guide rail 224 are arranged on the sliding support 222, a clamping jaw 221 is arranged on the sliding guide rail 224, and the clamping jaw 221 is connected with the extending end of the clamping oil cylinder 223; the lifting device 23 includes a lifting cylinder 231 and a guiding optical axis 232, and the sliding support 222 is connected to the following frame 243 through the lifting cylinder 231 and the guiding optical axis 232.
As shown in fig. 6, the guide rail system 32 includes a fixed guide rail 321 and a movable guide rail 322, and the movable guide rail 322 is connected to the fixed guide rail 321 through a cylinder and a linear guide rail set; the automatic transfer trolley 31 comprises a trolley frame 311, a motor speed reducer II 312 and a jacking mechanism 314 are arranged on the trolley frame 311, a transmission mechanism 313 is arranged at the bottom of the trolley frame 311, the transmission mechanism 313 is connected with the motor speed reducer II 312 through a double-row chain wheel and a double-row chain, and the jacking mechanism 314 is connected with the trolley frame 311 through a jacking oil cylinder and a guide optical axis.
As shown in fig. 1 and 7, the alarm system 5 and the electronic control system 4 are further included, and the alarm system 5 comprises an operation indicator light, a three-color alarm light and a loudspeaker; the electric control system 4 comprises a Programmable Logic Controller (PLC) and a wireless communication system; the automatic material preparation assembly line 1, the automatic material distribution assembly 2, the automatic feeding assembly 3 and the alarm system 5 are respectively connected with the electric control system 4.
And the automatic material preparation assembly line 1, the automatic logistics assembly 2 and the automatic line feeding assembly 3 are respectively provided with a proximity switch, a photoelectric switch and a laser ranging sensor, and the proximity switch, the photoelectric switch and the laser ranging sensor are matched with a Programmable Logic Controller (PLC).
When the utility model is manufactured and installed, the laser ranging sensor is installed at the tail of the automatic material preparation assembly line 1 which is put on the shelf, and the laser ranging sensor has the function of automatically stopping after the vehicle frames on different models are transferred to the set positions of each model along with the automatic material preparation assembly line 1 which is put on the shelf; setting positions according to the lifting distance of the lifting oil cylinder 231 of the automatic logistics assembly 2 on the shelf, and respectively installing proximity switches at the upper and lower set positions; the below of the automatic commodity circulation assembly 2 of putting on the shelf is equipped with a plurality of proximity switches, and this embodiment sets up four proximity switches, and the position is on four stands 211.
The automatic material preparation assembly line 1, the automatic material distribution assembly 2 and the automatic material feeding assembly 3 are respectively communicated with an electric control system 4 through a wireless communication system, so that the interlocking communication among the 3 sets of equipment is realized; the movable guide rail 322 is program interlocked with the assembly line, and when the upper frame moves to a set position, the movable guide rail 322 is automatically butted with the fixed guide rail 321.
The electric control system 4 is controlled by a PLC and is provided with a centralized control box, so that automatic control and manual control of each device can be realized; after the automatic control mode is switched, automatic control can automatically and continuously realize the actions of circulation of the upper automatic material preparation assembly line, grabbing, ascending, walking, descending, returning of the upper carriage, automatic transfer of the upper carriage to the main assembly line 7, automatic butt joint of guide rails and the like according to the programming content. The manual control is performed by the operator himself or herself. The electric control system 4 is connected with the main assembly line 7, all equipment is locked and stopped in the circulation process of the main assembly line 7, when the main assembly line 7 flows to a preset position, the movable guide rail 322 automatically extends out of a piston rod of the air cylinder through an automatic program, and the movable guide rail 322 is pushed to penetrate through the main assembly line 7 and is butted with the fixed guide rail 321; sending an instruction to an automatic material preparation assembly line 1, an automatic material distribution assembly 2 and an automatic material distribution assembly 31 through a wireless communication system, wherein the automatic material distribution assembly 2 transports a first upper frame to an partial loading position 6 by the automatic material distribution assembly 31, and transports a second upper frame to the partial loading position 6 by the automatic material distribution assembly 2, and then the automatic material preparation assembly line 1 transports a third upper frame to a preset position below the automatic material distribution assembly 2; after the transfer is finished, all the devices return automatically.
When the utility model works, the automatic material preparation assembly line 1 for putting on shelf transfers the first carriage to the set position of the laser distance measuring sensor through the main transmission mechanism assembly 11 and the driven mechanism assembly 12 to stop, then the walking device 24 on the automatic material distribution assembly 2 for putting on shelf drives the clamping device 22 and the lifting device 23 to move horizontally forwards on the beam 212, and stops after moving to the set position; the lifting oil cylinder 231 extends out of the piston rod to drive the clamping device 22 to descend to the set position of the proximity switch to stop; the clamping oil cylinder 223 contracts the piston rod to drive the clamping jaw 221 to clamp the first upper frame, and the piston rod contracts to a set position of the proximity switch to stop; meanwhile, the automatic material preparation assembly line 1 returns to perform second carriage transfer;
the lifting oil cylinder 231 drives the clamping device 22 to ascend to the set height of the proximity switch and stop; the walking device 24 drives the clamping device 22 and the lifting device 23 to move horizontally, and the clamping device moves to the installation position 6 and stops; the lifting oil cylinder 231 drives the clamping device 22 to descend to a set position and stop; the clamping oil cylinder 223 extends out of a piston rod to drive the clamping jaw 221 to loosen the first upper frame, and the piston rod extends out to a set position to stop; after the first upper frame is placed, the upper automatic logistics assembly 2 returns and carries out second upper frame transfer, and the first upper frame partially installs the whole machine wire harness;
when the main assembly line 7 flows to a preset position, the movable guide rail 322 automatically extends out of the piston rod of the cylinder through an automatic program, and the movable guide rail 322 is pushed to penetrate through the main assembly line 7 and is in butt joint with the fixed guide rail 321; sending an instruction to an automatic material preparation assembly line 1, an automatic material logistics assembly 2 and an automatic material logistics assembly 31 through a wireless communication system, wherein the automatic material logistics assembly 2 transports a first upper frame to an partial loading position 6 by the automatic material logistics assembly 31, and transports a second upper frame to the partial loading position 6 by the automatic material logistics assembly 2, and then the automatic material preparation assembly line 1 transports a third upper frame to a preset position below the automatic material logistics assembly 2; and after all the transfer work is finished, all the devices return automatically.
Claims (10)
1. The utility model provides an automatic device of transporting to assembly line from the assembly line of prepareeing material of frame on excavator which characterized in that: including automatic commodity circulation assembly (2) of putting on shelf, automatic commodity circulation assembly (2) of putting on shelf includes truss structure (21), be equipped with transport mechanism on truss structure (21), truss structure (21) bottom one side is equipped with automatic assembly line (1) of prepareeing material of putting on shelf, automatic assembly line (1) of prepareeing material of putting on shelf includes plate link assembly (13), be equipped with main drive mechanism assembly (11) and follower assembly (12) on plate link assembly (13), truss structure (21) bottom opposite side is equipped with automatic assembly (3) of putting on shelf, automatic assembly (3) of putting on shelf includes guide rail system (32), be equipped with automatic transport dolly (31) of putting on shelf on guide rail system (32).
2. The apparatus for automatically transferring the upper frame of the excavator from the preparation assembly line to the assembly line as recited in claim 1, wherein: the main transmission mechanism assembly (11) comprises a driving rack (111), a first motor reducer (112) and a main transmission shaft (113) are arranged on the driving rack (111), a driving chain wheel (114) is respectively arranged on the first motor reducer (112) and the main transmission shaft (113), a driven chain wheel A (115) is arranged on the main transmission shaft (113), and the first motor reducer (112) is connected with the main transmission shaft (113) through the driving chain wheel (114) and a chain.
3. The apparatus for automatically transferring the upper frame of the excavator from the preparation assembly line to the assembly line as recited in claim 1, wherein: the driven mechanism assembly (12) comprises a driven rack (121), a driven shaft (122) is arranged on the driven rack (121), a driven chain wheel B (123) is arranged on the driven shaft (122), and the driven chain wheel B (123) is connected with the driven shaft (122) through a key.
4. The apparatus for automatically transferring the upper frame of the excavator from the preparation assembly line to the assembly line as recited in claim 1, wherein: the transfer mechanism comprises a walking device (24), a lifting device (23) is arranged at the bottom of the walking device (24), a clamping device (22) is arranged at the bottom of the lifting device (23), the walking device (24) comprises a follow-up frame (243), a driving wheel (241) and a driven wheel (242) are arranged at the top of the follow-up frame (243), and the follow-up frame (243) is connected with the truss structure (21) through the driving wheel (241) and the driven wheel (242); the clamping device (22) comprises a sliding support (222), a clamping oil cylinder (223) and a sliding guide rail (224) are arranged on the sliding support (222), a clamping jaw (221) is arranged on the sliding guide rail (224), and the clamping jaw (221) is connected with the extending end of the clamping oil cylinder (223); the lifting device (23) comprises a lifting oil cylinder (231) and a guide optical axis (232), and the sliding support (222) is connected with the follow-up frame (243) through the lifting oil cylinder (231) and the guide optical axis (232).
5. The apparatus for automatically transferring the upper frame of the excavator from the preparation assembly line to the assembly line as recited in claim 1, wherein: the guide rail system (32) comprises a fixed guide rail (321) and a movable guide rail (322), and the movable guide rail (322) is in butt joint with the fixed guide rail (321) through a cylinder and a linear guide rail group.
6. The apparatus for automatically transferring the upper frame of the excavator from the preparation assembly line to the assembly line as recited in claim 1, wherein: go up automatic transport dolly (31) and include frame (311), be equipped with two (312) of motor reducer and climbing mechanism (314) on frame (311), frame (311) bottom is equipped with drive mechanism (313), and drive mechanism (313) are connected with two (312) of motor reducer through double sprocket and double chain, and climbing mechanism (314) are connected with frame (311) through jacking cylinder and direction optical axis.
7. The apparatus for automatically transferring the upper frame of the excavator according to any one of claims 1 to 6 from the preparation line to the assembly line, wherein: the alarm system (5) is further included, and the alarm system (5) comprises an operation indicator lamp, a three-color alarm lamp and a loudspeaker.
8. The apparatus of claim 7, wherein the apparatus further comprises a controller for controlling the operation of the excavator upper carriage to move from the preparation line to the assembly line, and wherein: the automatic material feeding system is characterized by further comprising an electric control system (4), wherein the automatic material feeding assembly line (1), the automatic material distribution assembly (2), the automatic feeding assembly (3) and the alarm system (5) are respectively connected with the electric control system (4).
9. The apparatus for automatically transferring an upper frame of an excavator from a preparation line to an assembly line as recited in claim 8, wherein: the electric control system (4) comprises a Programmable Logic Controller (PLC) and a wireless communication system.
10. The apparatus for automatically transferring an upper frame of an excavator from a preparation line to an assembly line as recited in claim 9, wherein: and the automatic material preparation assembly line (1), the automatic logistics assembly (2) and the automatic line feeding assembly (3) are respectively provided with a proximity switch, a photoelectric switch and a laser ranging sensor, and the proximity switch, the photoelectric switch and the laser ranging sensor are matched with a Programmable Logic Controller (PLC).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921011197.3U CN210557520U (en) | 2019-06-28 | 2019-06-28 | Device for automatically transferring upper frame of excavator from material preparation assembly line to assembly line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921011197.3U CN210557520U (en) | 2019-06-28 | 2019-06-28 | Device for automatically transferring upper frame of excavator from material preparation assembly line to assembly line |
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| Publication Number | Publication Date |
|---|---|
| CN210557520U true CN210557520U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921011197.3U Expired - Fee Related CN210557520U (en) | 2019-06-28 | 2019-06-28 | Device for automatically transferring upper frame of excavator from material preparation assembly line to assembly line |
Country Status (1)
| Country | Link |
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| CN (1) | CN210557520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112397209A (en) * | 2020-11-27 | 2021-02-23 | 中国科学院合肥物质科学研究院 | Annular transfer driving device for nuclear fusion device |
-
2019
- 2019-06-28 CN CN201921011197.3U patent/CN210557520U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112397209A (en) * | 2020-11-27 | 2021-02-23 | 中国科学院合肥物质科学研究院 | Annular transfer driving device for nuclear fusion device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200519 |
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| CF01 | Termination of patent right due to non-payment of annual fee |