CN210907363U - Floor breaker for building - Google Patents
Floor breaker for building Download PDFInfo
- Publication number
- CN210907363U CN210907363U CN201921606210.XU CN201921606210U CN210907363U CN 210907363 U CN210907363 U CN 210907363U CN 201921606210 U CN201921606210 U CN 201921606210U CN 210907363 U CN210907363 U CN 210907363U
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- China
- Prior art keywords
- motor
- crushing box
- fixedly connected
- bearing
- crushing
- Prior art date
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- Expired - Fee Related
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 29
- 238000003756 stirring Methods 0.000 claims description 26
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 238000010276 construction Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 239000004567 concrete Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007790 scraping Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 239000002699 waste material Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
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- Crushing And Pulverization Processes (AREA)
Abstract
The utility model is suitable for a concrete technical field provides a floor breaker for building, including body subassembly and the breaker that is used for breaking the floor, the body subassembly includes crushing case, first motor, puddler, first bearing and scraper blade, the lateral wall of first bearing with crushing case fixed connection, the one end of puddler runs through crushing case and with the inside wall fixed connection of first bearing, the output shaft of first motor with the other end fixed connection of puddler, twine auger fan on the lateral wall of puddler, the scraper blade is located the below of puddler, and the scraper blade with crushing case fixed connection; through setting up the scraper blade to through the effect of scraper blade, alleviate the speed that the floor descends, make the gear will the floor extruded is more even.
Description
Technical Field
The utility model belongs to the technical field of the concrete, especially, relate to a floor breaker for building.
Background
After construction is completed, dregs, waste concrete, waste bricks and stones and other wastes are often generated, but the floor slab is one of the most common wastes, generally, an operator needs to manually break the floor slab by using a hammer or other tools, the broken floor slab is put into a bag for classification, and then the bag is processed in other factories for secondary use; the waste floor slab can be used for producing coarse and fine aggregates, the coarse and fine aggregates can be used for producing concrete and mortar with corresponding strength grade or preparing building material products such as building blocks, wall boards, floor tiles and the like, and the coarse and fine aggregates can be used for highway pavement base after being added with curing materials.
The existing floor slab crushing device needs manual crushing, and certain manpower and material resources are often consumed by the crushing mode, so that unnecessary trouble is brought to an operator, and on the other hand, the floor slab is artificially crushed, so that the crushing is not uniform, and the processing difficulty of a factory is caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a floor breaker for building aims at solving current floor breaker, needs the manual breakage that carries on, and this kind of broken mode often can consume certain manpower and material resources to bring unnecessary trouble for operating personnel, on the other hand is for broken floor, and broken inhomogeneous, thereby lead to the problem of mill's processing difficulty.
The utility model discloses a realize like this, a floor breaker for building, including body subassembly and the breaker that is used for the floor breakage, the body subassembly includes crushing case, first motor, puddler, first bearing and scraper blade, first bearing is located on the inside wall on crushing case right side, just the lateral wall of first bearing with crushing case fixed connection, the one end of puddler runs through crushing case and with the inside wall fixed connection of first bearing, first motor is located the left side of crushing case, and the output shaft of first motor with the other end fixed connection of puddler, twine auger fan piece on the lateral wall of puddler;
the scraper is positioned below the stirring rod and fixedly connected with the crushing box, a feed port is formed above the crushing box, a discharge port is formed below the crushing box, and the feed port and the discharge port are respectively communicated with the crushing box;
the crushing device comprises a second motor, a second bearing, a rotating shaft and a gear, wherein the second bearing is positioned on the inner side wall of the front surface of the crushing box, the outer side wall of the second bearing is fixedly connected with the crushing box, the second motor is positioned on the rear surface of the crushing box, one end of the rotating shaft penetrates through the gear and is fixedly connected with the inner side wall of the second bearing, and the other end of the rotating shaft is fixedly connected with an output shaft of the second motor;
the gear, the rotating shaft and the second bearing are provided with a plurality of groups, every two groups of gears are meshed with each other, and a stirring device is arranged below the gears.
Preferably, the stirring device comprises a third motor, a rotating rod, a supporting rod and an iron ball, the rotating rod is positioned on the inner side wall of the bottom of the crushing box, the third motor is positioned below the crushing box, and an output shaft of the third motor penetrates through the crushing box and the rotating rod and is fixedly connected with the rotating rod;
the bracing piece is located on the lateral wall of dwang, just the one end of bracing piece with the dwang welding, the other end of bracing piece runs through the iron ball, and with the iron ball welding.
Preferably, the stirring device further comprises a breaking hammer, a spring and a push plate, wherein the spring is positioned inside the supporting rod, one end of the spring is fixedly connected with the supporting rod, the push plate is positioned at the other end of the spring, and the push plate is fixedly connected with the spring;
the quartering hammer with the push pedal sets up perpendicularly, just the quartering hammer runs through the bracing piece and with push pedal fixed connection.
Preferably, the support rod and the rotating rod are welded at an angle.
Preferably, the body assembly further comprises a fixing member, the fixing member and the breaking hammer are arranged in parallel, and the fixing member and the breaking box are fixedly connected.
Preferably, a plurality of saw teeth are arranged on the outer side wall of the fixing piece.
Compared with the prior art, the beneficial effects of the utility model are that: the first motor drives the stirring rod to rotate through the arrangement of the first motor and the second motor, so that the floor slab is subjected to primary crushing through high-speed rotation of the auger fan blades, the second motor drives the gears to rotate, and every two gears are meshed with each other, so that the floor slab is subjected to secondary crushing, and an operator does not need to manually beat and crush the floor slab; the third motor and the breaking hammer are arranged, so that the third motor drives the rotating rod to rotate at a high speed, when a broken floor slab is in contact with the supporting rod, the breaking hammer extends out under the action of the collision of the iron balls and the centrifugal force, so that the floor slab is impacted and broken, and the floor slab is broken more uniformly through the high-speed rotation of the supporting rod; through setting up the scraper blade to through the effect of scraper blade, alleviate the speed that the floor descends, make the gear will the floor extruded is more even.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a rear view of the present invention;
FIG. 3 is a schematic view of the connection structure of the breaking hammer and the support rod of the present invention;
in the figure: 1-body component, 11-crushing box, 12-first motor, 13-stirring rod, 14-first bearing, 15-scraping plate, 16-auger sector, 17-feeding hole, 18-discharging hole, 19-fixing piece, 191-saw tooth, 2-crushing device, 21-second motor, 22-second bearing, 23-rotating shaft, 24-gear, 25-stirring device, 251-third motor, 252-rotating rod, 253-supporting rod, 254-iron ball, 255-crushing hammer, 256-spring and 257-push plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-3, a floor slab crushing device for a building comprises a body assembly 1 and a crushing device 2 for crushing a floor slab, wherein the body assembly 1 comprises a crushing box 11, a first motor 12, a stirring rod 13, a first bearing 14 and a scraper 15, the first bearing 14 is positioned on the inner side wall of the right side of the crushing box 11, the outer side wall of the first bearing 14 is fixedly connected with the crushing box 11, one end of the stirring rod 13 penetrates through the crushing box 11 and is fixedly connected with the inner side wall of the first bearing 14, the first motor 12 is positioned on the left side of the crushing box 11, the output shaft of the first motor 12 is fixedly connected with the other end of the stirring rod 13, and an auger fan 16 is wound on the outer side wall of the stirring rod 13;
the scraping plate 15 is positioned below the stirring rod 13, the scraping plate 15 is fixedly connected with the crushing box 11, a feeding hole 17 is formed above the crushing box 11, a discharging hole 18 is formed below the crushing box 11, and the feeding hole 17 and the discharging hole 18 are respectively communicated with the crushing box 11;
the crushing device 2 comprises a second motor 21, a second bearing 22, a rotating shaft 23 and a gear 24, wherein the second bearing 22 is positioned on the inner side wall of the front surface of the crushing box 11, the outer side wall of the second bearing 22 is fixedly connected with the crushing box 11, the second motor 21 is positioned on the rear surface of the crushing box 11, one end of the rotating shaft 23 penetrates through the gear 24 and is fixedly connected with the inner side wall of the second bearing 22, and the other end of the rotating shaft 23 is fixedly connected with an output shaft of the second motor 21;
the gears 24, the rotating shaft 23 and the second bearing 22 are provided with a plurality of groups, each two groups of gears 24 are mutually meshed, and a stirring device 25 is arranged below the gears 24.
In the embodiment, the model of the first motor 12 is Y2-100L-2-3, so that the first motor 12 of the model has the characteristics of large torque and stable rotating speed, the second motor 21 and the third motor 251 are both servo motors, the model of the second motor 21 is MGME202S1, and the model of the third motor 251 is MGME302S1, and the second motor 21 and the third motor 251 of the models are arranged, so that the second motor 21 and the third motor 251 can accurately control the rotating speed and have the characteristic of low noise;
through setting up the first electrical machinery 12, puddler 13 and first bearing 14, make the floor break and enter the first stage, when the first electrical machinery 12 is electrified to work, drive the puddler 13 to rotate, and when the puddler 13 rotates, support the puddler 13 through the first bearing 14, reduce the friction that rotates and produce, and transmit the load born to the broken case 11 through the first bearing 14, make the durable time of this apparatus longer, stir more steadily, through setting up the sector piece 16 of the packing auger, because the sector piece 16 of the packing auger is rigid, it is convenient to dismantle and maintain, thus make the fault rate less, on the other hand the sector piece 16 of the packing auger is difficult to take place the phenomenon of blocking or putty, make durable time long, it is more even when stiring the floor;
due to the fact that the scraping plates 15 are arranged and the scraping plates 15 are trapezoidal, the trapezoidal scraping plates 15 have certain stability, the falling speed of the broken floor slab can be greatly reduced under the action of the scraping plates 15, the gears 24 meshed with each other are guaranteed, and the floor slab can be broken more uniformly;
through arranging the second motor 21, the second bearing 22, the rotary pump 23 and the gear 24, wherein the gear 24 is fixedly connected with the rotary shaft 23, the floor slab is crushed to enter a second stage, the rotary shaft 23 rotates on the crushing box 11 through the action of the second bearing 22, meanwhile, the second bearing 22 also has the capacity of reducing friction and bearing load, when the rotary shaft 23 drives the gear 24 to rotate through the second motor 21, every two gears 24 are meshed with each other and move in opposite directions, and the floor slab is crushed more uniformly;
through setting up agitating unit 25, make the broken third phase that gets into of floor, when third motor 251 drives dwang 252 and is at the uniform velocity when rotating, make dwang 252 be circular motion for broken case 11, when broken floor and bracing piece 253 contact, at first with the contact of iron ball 254, hit tentatively, the centripetal force of broken floor can be less than pivoted centrifugal force afterwards, make on broken floor is got rid of quartering hammer 255, quartering hammer 255 has also utilized the effect extension of centrifugal force simultaneously, and drive spring 256 and take place deformation, make the quartering hammer 255 who stretches out and broken floor collision extrusion, thereby hit and beat for the second time, it is rotatory at a high speed to drive dwang 252 through third motor 251, make the continuous and quartering hammer 255 and the contact of iron ball 254 of floor, thereby make the floor can be even by the breakage, broken precision has been guaranteed.
In this embodiment, the floor slab is put into the crushing box 11 through the feed port 17, and the first motor 12, the second motor 21 and the third motor 251 are turned on, so that the first motor 12 drives the stirring rod 13 to rotate, and the floor slab contacts with the rotary auger blade 16 to perform the first crushing, then the crushed floor slab falls on the scraping plate 15 to be buffered, and falls on the rotary gear 24 to perform the second crushing, at this time, every two gears 24 are engaged with each other to extrude the crushed floor slab, at this time, the extruded floor slab falls on the support rod 253 to perform the third crushing, and as the support rod 253 rotates at a high speed through the third motor 251, the crushed floor slab contacts with the iron ball 254 and performs the primary striking on the floor slab through the action of friction force, then contacts with the crushing hammer 255 through the action of centrifugal force to perform the second striking, the third striking is then performed only after contact with the serrations 191 on the fixing members 19, thereby performing a plurality of strikes and pressing, ensuring thorough floor slab breakage.
Further, the stirring device 25 comprises a third motor 251, a rotating rod 252, a supporting rod 253 and an iron ball 254, the rotating rod 252 is positioned on the inner side wall of the bottom of the crushing box 11, the third motor 251 is positioned below the crushing box 11, and an output shaft of the third motor 251 penetrates through the crushing box 11 and the rotating rod 252 and is fixedly connected with the rotating rod 252;
the support rod 253 is located on the outer side wall of the rotating rod 252, one end of the support rod 253 is welded with the rotating rod 252, and the other end of the support rod 253 penetrates through the iron ball 254 and is welded with the iron ball 254.
In this embodiment, by providing the stirring device 25, the floor slab is broken to enter the third stage, when the third motor 251 drives the rotating rod 252 to rotate at a constant speed, the rotating rod 252 makes a circular motion relative to the breaking box 11, when the broken floor slab contacts with the supporting rod 253, the broken floor slab first contacts with the iron ball 254 to perform a preliminary striking, then the centripetal force of the broken floor slab is smaller than the rotating centrifugal force, so that the broken floor slab is thrown onto the breaking hammer 255, and the breaking hammer 255 also extends under the action of the centrifugal force and drives the spring 256 to deform, so that the extending breaking hammer 255 collides with the broken floor slab to extrude, thereby performing a second striking, after the use, the third motor 251 stops moving, at this time, the rotating rod 252 also stops moving, and at the same time, the breaking hammer 255 is not under the action of the centrifugal force, so that the breaking hammer 255 resets through the spring 256, thereby completing the whole process of crushing the floor slab.
Further, the stirring device 25 further comprises a breaking hammer 255, a spring 256 and a push plate 257, wherein the spring 256 is located inside the supporting rod 253, one end of the spring 256 is fixedly connected with the supporting rod 253, the push plate 257 is located at the other end of the spring 256, and the push plate 257 is fixedly connected with the spring 256;
the breaking hammer 255 is perpendicular to the push plate 257, and the breaking hammer 255 penetrates through the support rod 253 and is fixedly connected with the push plate 257.
In this embodiment, through setting up quartering hammer 255, spring 256 and push pedal 257, when making the dwang 252 rotate through third motor 251, quartering hammer 255 can receive certain centrifugal force, thereby make quartering hammer 255 outwards move, and drive spring 256 and take place deformation, thereby promote push pedal 257 and slide on bracing piece 253, effectually prevent quartering hammer 255 because of external centrifugal force too big, lead to spring 256 to take place to warp, make the problem that can't reset.
Further, the support rod 253 is welded to the rotation rod 252 at an angle of 78 degrees.
In this embodiment, through setting up bracing piece 253 and dwang 252 with 78 degree angle welding for when this angle of rotation, pivoted scope is wider, can with more floor piece contact, thereby hit the even of beating the floor, and the bracing piece 253 of this angle is parallel with mounting 19, thereby when rotating at a high speed, can contact with sawtooth 191 on mounting 19, more even when making broken floor.
Further, the body assembly 1 further comprises a fixing member 19, the fixing member 19 is arranged in parallel with the breaking hammer 255, and the fixing member 19 is fixedly connected with the breaking box 11.
In this embodiment, through setting up mounting 19 and quartering hammer 255 parallel for mounting 19 is certain angle on crushing case 11, thereby the floor piece of throwing away passes through the radian of mounting 19, directly falls to crushing case 11 bottom, and flows out from discharge gate 18, thereby effectively prevents that broken floor from remaining in crushing case 11.
Further, a plurality of saw teeth 191 are provided on an outer sidewall of the fixing member 19.
In this embodiment, through setting up sawtooth 191 for broken floor and sawtooth 191 contact, thereby produce huge friction, make further smashing of broken floor, thereby guaranteed broken precision.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A floor breaker for building, includes body subassembly (1) and is used for the breaker (2) with the floor broken, its characterized in that: the body assembly (1) comprises a crushing box (11), a first motor (12), a stirring rod (13), a first bearing (14) and a scraper (15), wherein the first bearing (14) is positioned on the inner side wall on the right side of the crushing box (11), the outer side wall of the first bearing (14) is fixedly connected with the crushing box (11), one end of the stirring rod (13) penetrates through the crushing box (11) and is fixedly connected with the inner side wall of the first bearing (14), the first motor (12) is positioned on the left side of the crushing box (11), the output shaft of the first motor (12) is fixedly connected with the other end of the stirring rod (13), and an auger fan blade (16) is wound on the outer side wall of the stirring rod (13);
the scraper (15) is positioned below the stirring rod (13), the scraper (15) is fixedly connected with the crushing box (11), a feeding hole (17) is formed in the upper portion of the crushing box (11), a discharging hole (18) is formed in the lower portion of the crushing box (11), and the feeding hole (17) and the discharging hole (18) are respectively communicated with the crushing box (11);
the crushing device (2) comprises a second motor (21), a second bearing (22), a rotating shaft (23) and a gear (24), the second bearing (22) is located on the inner side wall of the front surface of the crushing box (11), the outer side wall of the second bearing (22) is fixedly connected with the crushing box (11), the second motor (21) is located on the rear surface of the crushing box (11), one end of the rotating shaft (23) penetrates through the gear (24) and is fixedly connected with the inner side wall of the second bearing (22), and the other end of the rotating shaft (23) is fixedly connected with an output shaft of the second motor (21);
the gear (24), the rotating shaft (23) and the second bearing (22) are provided with a plurality of groups, every two groups of gears (24) are mutually meshed, and a stirring device (25) is arranged below the gears (24).
2. A floor slab crushing apparatus for construction as claimed in claim 1, wherein: the stirring device (25) comprises a third motor (251), a rotating rod (252), a supporting rod (253) and an iron ball (254), the rotating rod (252) is positioned on the inner side wall of the bottom of the crushing box (11), the third motor (251) is positioned below the crushing box (11), and an output shaft of the third motor (251) penetrates through the crushing box (11) and the rotating rod (252) and is fixedly connected with the rotating rod (252);
the bracing piece (253) is located on the lateral wall of dwang (252), just the one end of bracing piece (253) with dwang (252) welding, the other end of bracing piece (253) runs through iron ball (254), and with iron ball (254) welding.
3. A floor slab crushing apparatus for construction as claimed in claim 2, wherein: the stirring device (25) further comprises a breaking hammer (255), a spring (256) and a push plate (257), the spring (256) is located inside the supporting rod (253), one end of the spring (256) is fixedly connected with the supporting rod (253), the push plate (257) is located at the other end of the spring (256), and the push plate (257) is fixedly connected with the spring (256);
the breaking hammer (255) and the push plate (257) are vertically arranged, and the breaking hammer (255) penetrates through the supporting rod (253) and is fixedly connected with the push plate (257).
4. A floor slab crushing apparatus for construction as claimed in claim 3, wherein: the supporting rod (253) and the rotating rod (252) are welded at an angle of 78 degrees.
5. A floor slab crushing device for building as claimed in claim 4, wherein: the body assembly (1) further comprises a fixing piece (19), the fixing piece (19) and the breaking hammer (255) are arranged in parallel, and the fixing piece (19) is fixedly connected with the breaking box (11).
6. A floor slab crushing apparatus for construction as claimed in claim 5, wherein: the outer side wall of the fixing piece (19) is provided with a plurality of saw teeth (191).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921606210.XU CN210907363U (en) | 2019-09-25 | 2019-09-25 | Floor breaker for building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921606210.XU CN210907363U (en) | 2019-09-25 | 2019-09-25 | Floor breaker for building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210907363U true CN210907363U (en) | 2020-07-03 |
Family
ID=71342247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921606210.XU Expired - Fee Related CN210907363U (en) | 2019-09-25 | 2019-09-25 | Floor breaker for building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210907363U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111921629A (en) * | 2020-07-27 | 2020-11-13 | 枣庄鑫金山智能装备有限公司 | Vertical shaft hammer type sand making machine |
| CN112206888A (en) * | 2020-11-01 | 2021-01-12 | 爱可道生物科技有限公司 | Centrifugal artichoke cutting breaker |
| CN112221608A (en) * | 2020-09-17 | 2021-01-15 | 余华强 | Soil restoration pre-crushing treatment device for garden maintenance |
| CN113304825A (en) * | 2021-07-08 | 2021-08-27 | 孙玉玲 | Bio-organic fertilizer and preparation process thereof |
| CN113877701A (en) * | 2021-08-03 | 2022-01-04 | 唐福鹏 | Concrete recovery device for building energy conservation and environmental protection and recovery method thereof |
-
2019
- 2019-09-25 CN CN201921606210.XU patent/CN210907363U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111921629A (en) * | 2020-07-27 | 2020-11-13 | 枣庄鑫金山智能装备有限公司 | Vertical shaft hammer type sand making machine |
| CN112221608A (en) * | 2020-09-17 | 2021-01-15 | 余华强 | Soil restoration pre-crushing treatment device for garden maintenance |
| CN112206888A (en) * | 2020-11-01 | 2021-01-12 | 爱可道生物科技有限公司 | Centrifugal artichoke cutting breaker |
| CN112206888B (en) * | 2020-11-01 | 2021-11-02 | 爱可道生物科技有限公司 | Centrifugal artichoke cutting breaker |
| CN113304825A (en) * | 2021-07-08 | 2021-08-27 | 孙玉玲 | Bio-organic fertilizer and preparation process thereof |
| CN113304825B (en) * | 2021-07-08 | 2022-06-24 | 沃达农业科技股份有限公司 | Bio-organic fertilizer and preparation process thereof |
| CN113877701A (en) * | 2021-08-03 | 2022-01-04 | 唐福鹏 | Concrete recovery device for building energy conservation and environmental protection and recovery method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200703 |
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| CF01 | Termination of patent right due to non-payment of annual fee |