CN213700088U - Clutch device of roller and speed reducer of roller press - Google Patents
Clutch device of roller and speed reducer of roller press Download PDFInfo
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- CN213700088U CN213700088U CN202022583514.8U CN202022583514U CN213700088U CN 213700088 U CN213700088 U CN 213700088U CN 202022583514 U CN202022583514 U CN 202022583514U CN 213700088 U CN213700088 U CN 213700088U
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- speed reducer
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- positioning
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- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000002427 irreversible effect Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- -1 clinker Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to a clutch device of roller and speed reducer of a roller press, which comprises a speed reducer, a transverse and rotatable roller shaft arranged on the left side of the speed reducer, and a roller concentrically fixed at the left end of the roller shaft, wherein the output shaft of the speed reducer is transversely arranged leftwards, and the input shaft of the speed reducer is transversely arranged rightwards; the right end of the flange shaft is concentrically fixed with an output shaft of the speed reducer through a locking disc; the utility model realizes the rapid clutch between the output shaft of the roller shaft and the output shaft of the speed reducer, thereby ensuring the simple and convenient disassembly and assembly, greatly reducing the difficulty of maintenance and effectively avoiding the irreversible damage of the roller shaft and the speed reducer; meanwhile, the connection strength is increased by means of the movable torsion support and the fixed torsion support, so that the speed reducer is effectively prevented from descending, the coaxiality of the output shaft of the speed reducer and the rotating shaft of the motor is ensured all the time, the vibration of the speed reducer is effectively reduced, the failure rate is reduced, and the service life is prolonged.
Description
Technical Field
The utility model relates to a roll squeezer roller and clutch of speed reducer.
Background
The roller press is widely applied to building material, mine, metallurgy and pelletizing industries and is mainly used for grinding brittle materials such as cement raw materials, clinker, coal, ores, chemical raw materials and the like; the roller press comprises a frame, two roller systems, a transmission device, a torque bearing, a roller cover, a feeding device, a hydraulic (pressurizing) system, a main bearing lubricating system, a dry oil lubricating system, an electrical system, a roller dismounting device and the like; a speed reducer in the roller press drives the roller to rotate through the roller shaft.
In the prior art, two mounting modes of a speed reducer and a roller shaft in a roller press are mainly adopted, one mode is that the roller shaft and an output shaft of the speed reducer are directly connected together in an interference fit mode, so that the roller press is difficult to disassemble during maintenance, great difficulty is caused to the maintenance, and if the disassembling and assembling method is improper, the roller shaft and the speed reducer are easily damaged irreversibly, and unnecessary economic loss is caused; secondly, the output shaft of the speed reducer is connected with the roller shaft by the flange, but the connection strength is difficult to guarantee, the speed reducer is easy to fall, the coaxiality of the speed reducer and the motor cannot be guaranteed, and the problem that the vibration of the speed reducer is large when the equipment runs can be caused, so that the defects of high equipment failure rate, short service life and the like are caused, and further improvement is waited.
SUMMERY OF THE UTILITY MODEL
To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a quick separation and reunion between the output shaft of having realized roller and speed reducer takes place irreversible damage in order to make dismouting simple and convenient and greatly reduced the degree of difficulty of overhauing with effectively having avoided roller and speed reducer, simultaneously with the help of having increased joint strength in order effectively to prevent that the speed reducer from taking place to descend, and then guarantee the output shaft of speed reducer and the axiality of the axis of rotation of motor all the time with the vibration that has effectively reduced the speed reducer and reduced the fault rate, thereby the roll squeezer roller of life and the clutch of speed reducer have been prolonged.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a roll squeezer roller and clutch of speed reducer, includes speed reducer, horizontal and rotatable locates the left roller of speed reducer, fixes the roller at the roller left end with one heart, and the output shaft of speed reducer transversely sets up left, and the input shaft of speed reducer transversely sets up its characterized in that right: the flange shaft sleeve and the flange shaft are sequentially arranged between the roll shaft and the speed reducer from left to right; the right end of the flange shaft is concentrically fixed with an output shaft of the speed reducer through a locking disc; a sleeve is formed outwards on the left side of the flange shaft sleeve, the sleeve is sleeved outside the right end of the roller shaft, a counter bore is formed in the center of the right side of the flange shaft sleeve, a plurality of first bolts which are distributed at equal angles along the circumferential direction are arranged at the bottom of the counter bore in an inserting mode, the thread ends of the first bolts are inserted into the right end of the roller shaft in a screw connection mode, the head of each first bolt is arranged in the counter bore, a first positioning counter bore is formed in the center of the right end of the roller shaft, correspondingly, a positioning hole is formed in the center of the bottom surface of the counter bore, a second positioning counter bore is formed in the center of the left end of the flange shaft, positioning shafts which are distributed transversely are arranged in the first positioning counter bore, the positioning hole and the second positioning counter bore in an inserting mode, third opening grooves are formed in the left end and the right end of each positioning shaft, correspondingly, a first open slot is formed in the bottom surface of the first positioning counter bore, a second open slot is formed in the bottom surface of the second positioning counter bore, and the outer ends of the two positioning pins are respectively inserted into the first open slot and the second open slot.
Preferably, set up the first constant head tank that a plurality of hoop distributes on telescopic opening part inner wall, correspondingly, set up the breach groove of the same quantity on the right-hand member outer wall of roller, every still all inlay in the breach groove and be equipped with a locating piece, a plurality of the outside of locating piece inserts respectively in the first constant head tank of a plurality of.
Preferably, a plurality of second bolts which are distributed at equal angles along the circumferential direction are further inserted into the flange shaft sleeve, the plurality of second bolts are all wound around the periphery of the sleeve, a flange which is distributed annularly is formed outwards at the left end of the flange shaft, the threaded ends of the plurality of second bolts penetrate through the flange and extend out of the right side of the flange, a nut is further sleeved and screwed on the threaded end of each second bolt, and each nut is tightly pressed on the right side of the flange.
Preferably, the outer sides of the left end and the right end of the speed reducer are respectively provided with a fixed torsion support and a movable torsion support, and the flange of the fixed torsion support and the flange of the left end of the speed reducer are mutually attached and fixed through a plurality of first bolt pairs which are distributed at equal angles along the circumferential direction.
Preferably, the flange plate of the movable torsion support and the flange plate at the right end of the speed reducer are mutually attached and fixed through a plurality of second bolt pairs which are distributed at equal angles along the circumferential direction.
Compared with the prior art, the utility model has the advantages of: the utility model realizes the rapid clutch between the roller shaft and the output shaft of the speed reducer by means of the flange shaft sleeve and the flange shaft, and realizes the rapid positioning between the roller shaft and the output shaft of the speed reducer by means of the positioning shaft and the two positioning pins, thereby further simplifying and facilitating the disassembly and assembly, thereby greatly reducing the difficulty of maintenance to effectively avoid the irreversible damage of the roller shaft and the speed reducer; meanwhile, the connection strength is increased by means of the movable torsion support and the fixed torsion support, and the speed reducer is effectively prevented from descending, so that the coaxiality of an output shaft of the speed reducer and a rotating shaft of the motor is always ensured, the vibration of the speed reducer is effectively reduced, the failure rate is reduced, and the service life is prolonged.
Drawings
FIG. 1 is a front view of the present invention, partially sectioned structural view;
fig. 2 is a left side view structural diagram of the flange shaft sleeve of the present invention;
FIG. 3 is a sectional view of the present invention at A;
fig. 4 is a left side view structural diagram of the flange shaft of the present invention;
FIG. 5 is a cross-sectional view of the present invention at B;
FIG. 6 is a left side view of the positioning shaft of the present invention;
fig. 7 is a sectional view of the present invention at C.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.
As shown in fig. 1 to 7, a clutch device for a roller and a speed reducer of a roller press comprises a speed reducer 5, a roller shaft 11 which is transversely and rotatably arranged on the left side of the speed reducer 5, and a roller 12 which is concentrically fixed on the left end of the roller shaft 11, wherein an output shaft of the speed reducer 5 is transversely arranged leftwards, an input shaft of the speed reducer 5 is transversely arranged rightwards, and the clutch device further comprises a flange shaft sleeve 1 and a flange shaft 2 which are sequentially arranged between the roller shaft 11 and the speed reducer 5 from left to right; the right end of the flange shaft 2 is concentrically fixed with an output shaft of a speed reducer 5 through a locking disc 3; a sleeve 103 is formed outwards on the left side of the flange shaft sleeve 1, the sleeve 103 is sleeved outside the right end of the roller shaft 11, a counter bore 101 is formed in the right side center of the flange shaft sleeve 1, a plurality of first bolts 15 distributed at equal angles along the circumferential direction are further inserted and arranged at the bottom of the counter bore 101, the thread ends of the first bolts 15 are inserted and screwed into the right end of the roller shaft 11, the head of each first bolt 15 is arranged in the counter bore 101, a first positioning counter bore 111 is formed in the right end center of the roller shaft 11, correspondingly, a positioning hole 102 is formed in the bottom center of the counter bore 101, a second positioning counter bore 21 is formed in the left end center of the flange shaft 2, transversely distributed positioning shafts 9 are further inserted and arranged in the positioning holes 102 of the first positioning counter bore 111 and the second positioning counter bore 21, a third opening groove 91 is formed in each of the left end and the right end of each positioning shaft 9, and a positioning, correspondingly, a first opening groove 112 is formed in the bottom surface of the first positioning counter bore 111, a second opening groove 22 is formed in the bottom surface of the second positioning counter bore 21, and the outer ends of the two positioning pins 10 are respectively inserted into the first opening groove 112 and the second opening groove 22.
Offer the first constant head tank 104 of a plurality of hoop distribution on the opening part inner wall of sleeve 103, correspondingly, offer the breach groove 113 of the same quantity on the right-hand member outer wall of roller 11, still all inlay in every breach groove 113 and be equipped with a locating piece 3, the outside of a plurality of locating piece 3 inserts respectively in the first constant head tank 104 of a plurality of.
Still alternate in the flange axle sleeve 1 and be provided with a plurality of second bolts 16 that distribute along the equidistance angle of circumferencial direction, a plurality of second bolts 16 all encircle the periphery of sleeve 103, the left end of flange axle 2 outwards is formed with the turn-ups 23 that has the annular distribution, the screw thread end of a plurality of second bolts 16 all passes turn-ups 23 and stretches out the right side of turn-ups 23, it has a nut 17 still all to overlap the spiro union of establishing on the screw thread end of every second bolt 16, every nut 17 all compresses tightly the right side at turn-ups 23.
The outer sides of the left end and the right end of the speed reducer 5 are respectively provided with a fixed torsion support 7 and a movable torsion support 6, a flange of the fixed torsion support 7 is mutually attached to a flange of the left end of the speed reducer 5 and is mutually fixed through a plurality of first bolt pairs 19 which are distributed along the circumferential direction at equal angles, and the fixed torsion support 7 can offset the torsion which is brought to the speed reducer 5 by the rollers 12, and the speed reducer belongs to the prior art.
The flange plate of the movable torsion support 6 and the flange plate at the right end of the speed reducer 5 are mutually attached and fixed through a plurality of second bolt pairs 14 which are distributed at equal angles along the circumferential direction; the movable torque support 6 has three functions, one of which is that the whole system consisting of the speed reducer 5, the locking disc 3 and the flange shaft 2 is convenient to disassemble; secondly, the speed reducer 5 can be supported, and the speed reducer 5 is guaranteed to be always kept in a horizontal state, so that better coaxiality is guaranteed, and the vibration value of the system is reduced; thirdly, assisting in balancing the action of the torque; belongs to the prior art.
The installation method comprises the following steps:
(1) the flange plate of the movable torsion support 6 is fixed on the flange plate at the right end of the speed reducer 5 by a plurality of second bolt pairs 14, each second bolt pair 14 achieves corresponding tightening torque, the thread specification of a bolt in each second bolt pair 20 is M52, the bolt strength is 10.9 grade, and the tightening torque of the bolt is 8000N/M; the bottom of the mobile torsion support 6 is then fixed to the mounting surface.
(2) The right side of the speed reducer 5 is provided with the motor 8, the base of the motor 8 is adjusted, the coaxiality error between the rotating shaft of the motor 8 and the input shaft of the speed reducer 5 is smaller than 0.5mm, the speed reducer 5 is moved along the axial direction by means of the movable torque support 6 to adjust the position of the input shaft, and then the rotating shaft of the motor 8 is connected with the input shaft of the speed reducer 5 through the universal coupling 18.
(3) The flange plate of the fixed type torsion support 7 is fixed on the flange plate at the left end of the speed reducer 5 by a plurality of first bolt pairs 19, and each first bolt pair 19 achieves corresponding tightening torque, wherein the thread specification of the bolts in the first bolt pairs 19 is M56, the bolt strength is 10.9 grade, and the tightening torque of the bolts is 9500N/M; the bottom of the fixed torsion support 7 is then fixed to the mounting surface.
(4) Inserting and fixing the right end of the flange shaft 2 into the left end of the locking disc 3 and screwing the locking bolt on the locking disc 3 so as to concentrically connect the right end of the flange shaft 2 to the output shaft of the speed reducer 5; when the locking disc 3 is used for locking, the locking bolt must be locked according to rated torque and must be carried out for three times, the locking bolt is fastened to one third of the rated torque for the first time, the locking bolt is fastened to two thirds of the rated torque for the second time, the locking bolt is fastened to three thirds of the rated torque for the third time, the locking bolts are screwed up one by one in the anticlockwise direction, the end faces of the inner ring and the outer ring of the locking disc 3 are finally guaranteed to be flush, and the parallelism error of the end faces of the inner ring and the outer ring is required to be not more than 0.3 mm.
(5) The threaded ends of the second bolts 16 penetrate through the right end of the flange shaft sleeve 1 and the turned edge 23 and extend out of the right side of the turned edge 23, then a nut 17 is sleeved on the threaded end of each second bolt 16 in a screwed mode and achieves corresponding screwing torque, and therefore the right end of the flange shaft sleeve 1 is fixed at the left end of the flange shaft 2.
(6) The two positioning pins 10 are respectively embedded in the two third opening grooves 91 on the positioning shaft 9, and then the right end of the positioning shaft 9 is inserted into the second positioning counterbore 21 until the outer end of the right one of the positioning pins 10 is inserted into the second opening groove 22.
(7) The right end of the flange shaft sleeve 1 is attached to the left end of the flange shaft 2, so that the left end of the positioning shaft 9 penetrates through the positioning hole 102 and is inserted into the first positioning counter bore 111 until the outer end of one positioning pin 10 on the left side is inserted into the first opening groove 112, the sleeve 103 is sleeved on the outer side of the right end of the roller shaft 11, and the outer side of each positioning block 3 is inserted into the corresponding first positioning groove 104.
(8) The threaded end of each first bolt 15 penetrates through the flange shaft sleeve 1 and is inserted into the right end of the roll shaft 11 in a screwed mode to achieve corresponding screwing torque, and therefore the flange shaft sleeve 1 is fixed to the right end of the roll shaft 11; the first bolt 15 has a thread gauge of M48, a strength of 10.9 class and a tightening torque of 6000N/M.
(9) When the roller 12 is disassembled, each second bolt 16 and each nut 17 are loosened, and then the flange shaft sleeve 1 and the flange shaft 2 are separated, so that the roller 12 is separated from the system; and then the locking bolts of the locking disc 3 are loosened to separate the flange shaft 2 from the output shaft of the speed reducer 5, and finally each first bolt pair 19 is disassembled to separate the fixed type torsion support 7 from the speed reducer 5.
The utility model realizes the rapid clutch between the roller shaft 11 and the output shaft of the speed reducer 5 by means of the flange shaft sleeve 1 and the flange shaft 2, and realizes the rapid positioning between the roller shaft 11 and the output shaft of the speed reducer 5 by means of the positioning shaft 9 and the two positioning pins 10, thereby further simplifying and facilitating the disassembly and assembly, thereby greatly reducing the difficulty of maintenance to effectively avoid the irreversible damage of the roller shaft and the speed reducer; meanwhile, the connection strength is increased by means of the movable torsion support 6 and the fixed torsion support 7, and the reduction of the speed reducer 5 is effectively prevented, so that the coaxiality of the output shaft of the speed reducer 5 and the rotating shaft of the motor 8 is always ensured, the vibration of the speed reducer 5 is effectively reduced, the failure rate is reduced, and the service life is prolonged.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. The utility model provides a roll squeezer roller and clutch of speed reducer, includes speed reducer, horizontal and rotatable locates the left roller of speed reducer, fixes the roller at the roller left end with one heart, and the output shaft of speed reducer transversely sets up left, and the input shaft of speed reducer transversely sets up its characterized in that right: the flange shaft sleeve and the flange shaft are sequentially arranged between the roll shaft and the speed reducer from left to right; the right end of the flange shaft is concentrically fixed with an output shaft of the speed reducer through a locking disc; a sleeve is formed outwards on the left side of the flange shaft sleeve, the sleeve is sleeved outside the right end of the roller shaft, a counter bore is formed in the center of the right side of the flange shaft sleeve, a plurality of first bolts which are distributed at equal angles along the circumferential direction are arranged at the bottom of the counter bore in an inserting mode, the thread ends of the first bolts are inserted into the right end of the roller shaft in a screw connection mode, the head of each first bolt is arranged in the counter bore, a first positioning counter bore is formed in the center of the right end of the roller shaft, correspondingly, a positioning hole is formed in the center of the bottom surface of the counter bore, a second positioning counter bore is formed in the center of the left end of the flange shaft, positioning shafts which are distributed transversely are arranged in the first positioning counter bore, the positioning hole and the second positioning counter bore in an inserting mode, third opening grooves are formed in the left end and the right end of each positioning shaft, correspondingly, a first open slot is formed in the bottom surface of the first positioning counter bore, a second open slot is formed in the bottom surface of the second positioning counter bore, and the outer ends of the two positioning pins are respectively inserted into the first open slot and the second open slot.
2. The roller press roller and reducer clutch device according to claim 1, characterized in that: set up the first constant head tank that a plurality of hoop distributes on telescopic opening part inner wall, correspondingly, set up the breach groove of the same quantity on the right-hand member outer wall of roller, every still all inlay in the breach groove and be equipped with a locating piece, a plurality of the outside of locating piece inserts respectively in the first constant head tank of a plurality of.
3. The roller press roller and reducer clutch device according to claim 1, characterized in that: the flange shaft sleeve is internally provided with a plurality of second bolts which are distributed at equal angles along the circumferential direction in an inserting mode, the second bolts are all arranged on the periphery of the sleeve in an encircling mode, a flanging which is distributed annularly is formed at the left end of the flange shaft outwards, the threaded ends of the second bolts penetrate through the flanging and extend out of the right side of the flanging, a nut is connected to the threaded end of each second bolt in a sleeved mode, and each nut is tightly pressed on the right side of the flanging.
4. The roller press roller and reducer clutch device according to claim 1, characterized in that: the outer sides of the left end and the right end of the speed reducer are respectively provided with a fixed torsion support and a movable torsion support, and a flange plate of the fixed torsion support and a flange plate of the left end of the speed reducer are mutually attached and fixed through a plurality of first bolt pairs which are distributed at equal angles along the circumferential direction.
5. The roller press roller and reducer clutch device according to claim 4, wherein: and the flange plate of the movable torsion support and the flange plate at the right end of the speed reducer are mutually attached and fixed through a plurality of second bolt pairs which are distributed at equal angles along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022583514.8U CN213700088U (en) | 2020-11-10 | 2020-11-10 | Clutch device of roller and speed reducer of roller press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022583514.8U CN213700088U (en) | 2020-11-10 | 2020-11-10 | Clutch device of roller and speed reducer of roller press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213700088U true CN213700088U (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022583514.8U Withdrawn - After Issue CN213700088U (en) | 2020-11-10 | 2020-11-10 | Clutch device of roller and speed reducer of roller press |
Country Status (1)
| Country | Link |
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| CN (1) | CN213700088U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112317057A (en) * | 2020-11-10 | 2021-02-05 | 南京凯盛国际工程有限公司 | Clutch device of roller and speed reducer of roller press and mounting method of clutch device |
-
2020
- 2020-11-10 CN CN202022583514.8U patent/CN213700088U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112317057A (en) * | 2020-11-10 | 2021-02-05 | 南京凯盛国际工程有限公司 | Clutch device of roller and speed reducer of roller press and mounting method of clutch device |
| CN112317057B (en) * | 2020-11-10 | 2024-04-12 | 中材国际智能科技有限公司 | Clutch device of roller and speed reducer of roller press and mounting method of clutch device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 303 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee after: Zhongcai International Intelligent Technology Co.,Ltd. Address before: 303 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee before: NANJING KISEN INTERNATIONAL ENGINEERING Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210716 Effective date of abandoning: 20240412 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210716 Effective date of abandoning: 20240412 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |