CN115108432B - Elevator buffer - Google Patents
Elevator buffer Download PDFInfo
- Publication number
- CN115108432B CN115108432B CN202210961745.9A CN202210961745A CN115108432B CN 115108432 B CN115108432 B CN 115108432B CN 202210961745 A CN202210961745 A CN 202210961745A CN 115108432 B CN115108432 B CN 115108432B
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- liquid
- close
- fuselage
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000872 buffer Substances 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 78
- 238000009434 installation Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims 4
- 238000009423 ventilation Methods 0.000 claims 2
- 238000002955 isolation Methods 0.000 abstract description 10
- 230000003139 buffering effect Effects 0.000 abstract description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000979 retarding effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/282—Structure thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Actuator (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention belongs to the field of buffers, and particularly relates to an elevator buffer, which comprises a machine body and a mounting ground, wherein a first hydraulic cavity is formed in the middle of the machine body, a first hydraulic rod is arranged in the first hydraulic cavity, a first bearing plate is arranged at a position, far away from the machine body, of the first hydraulic rod, the first bearing plate is provided with a plurality of first springs which are connected to the machine body, the first hydraulic cavity is provided with a liquid isolation plate around the first hydraulic rod, a first liquid through hole is formed in the liquid isolation plate, close to the bottom of the machine body, and is connected to the bottom of the first hydraulic rod, a plurality of first one-way liquid through valves are arranged in the liquid isolation plate, close to the first hydraulic rod, a second liquid through hole is symmetrically formed in the liquid isolation plate, two second liquid through holes are provided with first pressure valves close to the first hydraulic rod, a first fixing cavity is symmetrically arranged in the machine body, and a first fixing block is slidably arranged in the two first fixing cavities. Secondary buffer skew can be avoided at the time of buffering.
Description
Technical Field
The invention belongs to the field of buffers, and particularly relates to an elevator buffer.
Background
The existing elevator buffer is frequently subjected to maintenance by springs, because the air in an installation site is moist and moist, the exposed springs are often corroded and easily rusted, the springs are easily broken when not replaced in time, no effective solving means is available after the springs are broken, the buffer efficacy is greatly reduced, no effective fixing means is available after the elevator is sprung up for secondary impact, the buffer is easily inclined, and secondary damage is caused to the elevator.
Disclosure of Invention
The present invention has been made in view of the above problems occurring in the prior art, and an object of the present invention is to provide an elevator buffer capable of avoiding secondary buffer skew at the time of buffering.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides an elevator buffer, includes fuselage, installation ground, first hydraulic chamber has been seted up to fuselage intermediate position, first hydraulic chamber is provided with first hydraulic stem, first hydraulic stem stretches out first hydraulic chamber and is being provided with first bearing plate in keeping away from the fuselage position, first bearing plate is kept away from first hydraulic stem and is provided with a plurality of first spring coupling to the fuselage, first hydraulic chamber is provided with the liquid division board around first hydraulic stem, the liquid division board is close to the fuselage bottom and has seted up first logical liquid mouth and be connected to first hydraulic stem bottom, the liquid division board is close to first hydraulic stem and is provided with a plurality of first one-way liquid valves, the liquid division board is close to the fuselage symmetry and is provided with the second liquid mouth, two the second liquid mouth is close to first hydraulic stem and is provided with first pressure valve, the fuselage is close to second liquid mouth symmetry and is provided with first fixed chamber, two the first fixed block is provided with in the first fixed chamber in the slip, two the first fixed block is close to the second liquid mouth and is provided with the second spring coupling to first fixed block, can guarantee when the first fixed block is installed and is corresponding to rebound equipment can not be guaranteed to rebound ground.
Preferably, the two ends of the machine body far away from the first hydraulic rod are symmetrically provided with second hydraulic cavities, the two second hydraulic cavities are far away from the ground and are provided with second hydraulic rods, third springs are arranged in the two second hydraulic cavities and fixedly connected with the second hydraulic rods, the two second hydraulic rods are far away from the second hydraulic rods and are provided with second bearing plates, and the machine body close to the second hydraulic cavities is symmetrically provided with third liquid ports; the hydraulic machine is characterized in that the first hydraulic rod is provided with a fixed notch close to the first bearing plate, the machine body is provided with two positioning blocks close to the first spring symmetrically, one end of each positioning block stretches into the machine body, one end of each positioning block stretches into the fixed notch, a first moving cavity is formed in one end of the positioning block, close to the third liquid port, of the machine body, the first moving cavity is provided with a first moving block close to the third liquid port, the first moving block stretches out of the first moving cavity and stretches into the third liquid port, the first moving block is fixedly connected with a fourth spring, the third liquid port is provided with a first pushing block close to the first moving block, the spring is contracted in the machine body at ordinary times, is not in excessive contact with outside moist air, and is popped up when needed.
Preferably, the positioning block is close to the fourth spring and provided with a first vent hole, the first vent hole is close to the first bearing plate and provided with a knocking block, the knocking block extends out of the positioning block, and the spring is ensured not to delay knocking out due to too long non-movement through knocking.
Preferably, the machine body is symmetrically provided with two limiting plates close to the knocking block, and the two limiting plates are provided with limiting notches close to the positioning blocks.
Preferably, two third liquid inlets are close to the first fixed block and are provided with fourth liquid inlets, two fourth liquid inlets are connected to the first fixed cavity, two fourth liquid inlets are close to the first fixed block and are provided with third pressure valves, the machine body is close to the second hydraulic cavity and is provided with a liquid storage cavity, the liquid storage cavity is close to the second hydraulic cavity and is provided with a second pressure valve, and when the spring is broken, the spring can be replaced by the function of three-point supporting retarding through liquid dispersion.
The beneficial effects are that:
① When the spring drives rebound after the elevator is impacted, the equipment can be ensured not to incline.
② The spring can be contracted in the machine body at ordinary times, does not have excessive contact with outside moist air, and can be ejected when needed.
③ The spring is ensured not to delay knocking out due to too long non-movement by knocking.
④ When the spring is broken, the function of supporting and retarding at three points can be achieved through the dispersion of liquid to replace the spring.
Drawings
FIG. 1 is a perspective view of the present invention
FIG. 2 is a top view of the present invention
FIG. 3 is a cross-sectional view A-A of FIG. 2
FIG. 4 is an enlarged view of FIG. 3at A
FIG. 5 is an enlarged view of the portion B in FIG. 3
In the figure: the hydraulic device comprises a second bearing plate 1, a second hydraulic rod 2, a second hydraulic cavity 3, a machine body 6, a third spring 7, a first spring 8, a positioning block 9, a first bearing plate 11, a first hydraulic rod 13, a knocking block 14, a limiting plate 15, an installation ground 16, a liquid storage cavity 17, a second pressure valve 18, a first fixing block 19, a second spring 20, a third pressure valve 21, a fourth liquid port 22, a liquid isolation plate 23, a first hydraulic cavity 24, a limiting notch 25, a first liquid port 26, a first one-way liquid port 28, a second liquid port 29, a first pressure valve 30, a first moving block 31, a fourth spring 32, a first vent hole 33, a first pushing block 34, a first fixing cavity 35, a first fixing hole 36, a third liquid port 37 and a first moving cavity 38.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
In the description of the present invention, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Referring to fig. 1-5, an elevator buffer comprises a machine body 6 and an installation ground 16, wherein a first hydraulic cavity 24 is formed in the middle position of the machine body 6, a first hydraulic rod 13 is arranged in the first hydraulic cavity 24, a first bearing plate 11 is arranged at a position far away from the machine body 6 and extends out of the first hydraulic cavity 24, a plurality of first springs 8 are arranged on the first bearing plate 11 far away from the first hydraulic rod 13 and connected to the machine body 6, a liquid isolation plate 23 is arranged around the first hydraulic rod 13, a first through hole 26 is formed in the bottom of the liquid isolation plate 23 near the machine body 6 and connected to the bottom of the first hydraulic rod 13, a plurality of first one-way through liquid valves 28 are arranged on the liquid isolation plate 23 near the first hydraulic rod 13, a second through hole 29 is symmetrically arranged on the liquid isolation plate 23 near the machine body 6, a first pressure valve 30 is arranged on the two second through holes 29 near the first hydraulic rod, a first fixing cavity 35 is symmetrically arranged on the first bearing plate 11, a first fixing block 19 is slidably arranged in the two first fixing cavities 35, a first fixing block 19 is correspondingly arranged on the first fixing block 19 near the second through hole 19 and connected to the first fixing hole 36 of the machine body 6, and the first fixing hole 19 is correspondingly arranged on the first fixing hole 36.
Further, two ends of the machine body 6 far away from the first hydraulic rod 13 are symmetrically provided with second hydraulic cavities 3, two second hydraulic cavities 3 are far away from the ground and are provided with second hydraulic rods 2, third springs 7 are arranged in the two second hydraulic cavities 3 and fixedly connected with the second hydraulic rods 2, the two second hydraulic rods 2 are far away from the second hydraulic rods 2 and are provided with second bearing plates 1, and the machine body 6 is symmetrically provided with third hydraulic ports 37 close to the second hydraulic cavities 3; the first hydraulic stem 13 is provided with fixed notch near first bearing plate 11, fuselage 6 is provided with two locating pieces 9 near first spring 8 symmetry, locating piece 9 one end stretches into fuselage 6, locating piece 9 one end stretches into fixed notch in, locating piece 9 stretches into fuselage 6 near first removal chamber 38 of having seted up of one end in the third liquid port 37, first removal chamber 38 is provided with first movable block 31 near third liquid port 37, first movable block 31 stretches out first removal chamber 38 and stretches into in the third liquid port 37, be provided with fourth spring 32 fixed connection first movable block 31 in the first movable chamber 38, third liquid port 37 is provided with first promotion soon 34 near first movable block 31.
Further, a first vent hole 33 is formed in the positioning block 9 close to the fourth spring 32, a knocking block 14 is arranged in the first vent hole 33 close to the first bearing plate 11, and the knocking block 14 extends out of the positioning block 9.
Further, two limiting plates 15 are symmetrically arranged on the machine body 6 close to the knocking block 14, and limiting notches 25 are arranged on the two limiting plates 15 close to the positioning block 9.
Further, two third liquid ports 37 are provided with a fourth liquid port 22 near the first fixed block 19, two fourth liquid ports are connected to the first fixed cavity 35, two fourth liquid ports are provided with a third pressure valve 21 near the first fixed block 19, the machine body 6 is provided with a liquid storage cavity 17 near the second hydraulic cavity 3, and the liquid storage cavity 17 is provided with a second pressure valve 18 near the second hydraulic cavity 3.
Working principle: when the elevator is not controlled to fall, the elevator is pressed on the second bearing plate 1, the second bearing plate 1 drives the second hydraulic rod 2 to slide towards the second hydraulic cavity 3 and extrude the liquid in the second hydraulic cavity 3, the pressure pushes the first pushing block 34 to slide along the third liquid port 37 and extrudes the first moving block 31, the first moving block 31 is extruded into the positioning block 9, at the moment, the first spring 8 which is already extruded drives the first bearing plate 11 to push upwards without the constraint of the first moving block 9, the first bearing plate 11 drives the first hydraulic rod 13 to move, the movement of the first hydraulic rod 13 extrudes the positioning block 9 aside to move along the limiting notch 25, along with the movement of the first hydraulic rod 13, the liquid in the first hydraulic cavity 24 is sucked out along with the first one-way liquid through valve 28 on the liquid isolation plate 23, filling under the first hydraulic rod 13, pushing the first spring 8 of the extrusion liquid box to buffer pressure when the elevator falls, opening the first pressure valve 30, extruding liquid into the first fixing cavity 35 along the second liquid port 29, extruding the first fixing block 19 into the first fixing hole 36 to fix the machine body 6, preventing the equipment from shaking due to strong impact or rebound secondary impact, when the first spring 8 is broken due to long-time unused, at the moment, all the pressure of the elevator falls in the liquid under the first hydraulic rod 13, opening the third pressure valve 21, allowing the liquid to enter the second hydraulic cavity 3 along the fourth liquid port 22 and the third liquid port 37, giving the second hydraulic rod 2 the pressure resisting the impact, continuing to be extruded to enable the liquid to enter the liquid storage cavity 17 along the second pressure valve 1
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.
Claims (4)
1. The utility model provides an elevator buffer, includes fuselage (6), installation ground (16), a serial communication port, first hydraulic pressure chamber (24) have been seted up to fuselage (6) intermediate position, first hydraulic pressure chamber (24) are provided with first hydraulic pressure pole (13), first hydraulic pressure pole (13) stretch out first hydraulic pressure chamber (24) and are provided with first bearing plate (11) in keeping away from fuselage (6) position, first bearing plate (11) are kept away from first hydraulic pressure pole (13) and are provided with a plurality of first springs (8) and are connected to fuselage (6), first hydraulic pressure chamber (24) are provided with liquid division board (23) around first hydraulic pressure pole (13), liquid division board (23) are close to fuselage (6) bottom and are offered first through-hole (26) and are connected to first hydraulic pressure pole (13) bottom, liquid division board (23) are close to first hydraulic pressure pole (13) and are provided with a plurality of first one-way hydraulic valves (28), liquid division board (23) are close to fuselage (6) symmetry and are provided with second through-hole (29), two second hydraulic pressure poles (29) are provided with second through-hole (29) symmetry, two through-holes (29) are provided with first through-hole (35) and are provided with two fixed through-hole (35), the two first fixing blocks (19) are provided with second springs (20) close to the second liquid ports (29) and connected to the first fixing cavities (35), and the installation ground (16) of the machine body (6) is provided with first fixing holes (36) corresponding to the first fixing blocks (19);
The two ends of the machine body (6) far away from the first hydraulic rod (13) are symmetrically provided with second hydraulic cavities (3), two second hydraulic cavities (3) are far away from the ground and are provided with second hydraulic rods (2), a third spring (7) is arranged in each second hydraulic cavity (3) and is fixedly connected with each second hydraulic rod (2), two second hydraulic rods (2) are far away from each second hydraulic rod (2) and are provided with second bearing plates (1), and the machine body (6) close to each second hydraulic cavity (3) is symmetrically provided with third hydraulic ports (37); the utility model discloses a hydraulic control device for a vehicle, including first hydraulic stem (13), first bearing plate (11), fuselage (6), first spring (8) and second bearing plate (37), fuselage (6) are close to first bearing plate (11) and are provided with fixed breach, fuselage (6) are close to first spring (8) symmetry and are provided with two locating pieces (9), locating piece (9) one end stretches into fuselage (6), locating piece (9) one end stretches into fixed breach, first movable cavity (38) have been seted up to one end in fuselage (6) are close to third fluid port (37), first movable cavity (38) are close to third fluid port (37) and are provided with first movable block (31), first movable block (31) stretch out first movable cavity (38) and stretch into third fluid port (37), be provided with fourth spring (32) fixed connection first movable block (31) in the first movable cavity (38), third fluid port (37) are close to first movable block (31) and are provided with first impeller (34).
2. An elevator buffer according to claim 1, characterized in that the positioning block (9) is provided with a first ventilation hole (33) near the fourth spring (32), the first ventilation hole (33) is provided with a knock block (14) near the first bearing plate (11), and the knock block (14) extends out of the positioning block (9).
3. An elevator buffer according to claim 2, characterized in that the machine body (6) is symmetrically provided with two limiting plates (15) close to the knocking block (14), and the two limiting plates (15) are provided with limiting notches (25) close to the positioning block (9).
4. An elevator buffer according to claim 1, characterized in that two of the third liquid openings (37) are provided with fourth liquid openings (22) near the first fixed block (19), two of the fourth liquid openings are connected into the first fixed chamber (35), two of the fourth liquid openings are provided with third pressure valves (21) near the first fixed block (19), the fuselage (6) is provided with liquid storage chambers (17) near the second hydraulic chamber (3), and the liquid storage chambers (17) are provided with second pressure valves (18) near the second hydraulic chamber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210961745.9A CN115108432B (en) | 2022-08-11 | 2022-08-11 | Elevator buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210961745.9A CN115108432B (en) | 2022-08-11 | 2022-08-11 | Elevator buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115108432A CN115108432A (en) | 2022-09-27 |
| CN115108432B true CN115108432B (en) | 2024-05-28 |
Family
ID=83335914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210961745.9A Active CN115108432B (en) | 2022-08-11 | 2022-08-11 | Elevator buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115108432B (en) |
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| JP2001192185A (en) * | 2000-01-11 | 2001-07-17 | Kayaba Ind Co Ltd | Shock absorber |
| JP2012172829A (en) * | 2011-02-24 | 2012-09-10 | Mitsubishi Electric Corp | Hydraulic shock absorber for elevator |
| CN104477731A (en) * | 2014-12-15 | 2015-04-01 | 重庆和航科技股份有限公司 | Buffer device for composite damping force of elevator |
| CN204917523U (en) * | 2015-03-05 | 2015-12-30 | 吴江市龙昌金属制品厂 | Elevator spring hydraulic absorber |
| CN207078852U (en) * | 2017-08-29 | 2018-03-09 | 重庆三杭蒙特费罗电梯部件有限公司 | A kind of elevator base being easily installed |
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| CN109368439A (en) * | 2018-08-29 | 2019-02-22 | 合肥市迅立达电梯有限公司 | A kind of hydraulic elevator |
| CN109422157A (en) * | 2017-08-29 | 2019-03-05 | 陈国柱 | A kind of cushioning device for elevator |
| CN109573777A (en) * | 2017-09-29 | 2019-04-05 | 上海龙钰电梯配件有限公司 | A kind of elevator buffer device |
| CN208856716U (en) * | 2018-08-10 | 2019-05-14 | 浙江奥力迅电梯部件有限公司 | A kind of elevator safety buffer device |
| CN209322232U (en) * | 2019-01-05 | 2019-08-30 | 浙江省特种设备检验研究院 | A kind of Buffer for elevator convenient for suing and labouring |
| CN112299200A (en) * | 2020-09-22 | 2021-02-02 | 苏州科达液压电梯有限公司 | Safety protection device and safety protection method for hydraulic elevator |
| CN215980239U (en) * | 2021-11-08 | 2022-03-08 | 湖南省经济贸易高级技工学校 | Hydraulic cylinder buffer structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG112944A1 (en) * | 2003-12-22 | 2005-07-28 | Inventio Ag | Equipment for vibration damping of a lift cage |
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2022
- 2022-08-11 CN CN202210961745.9A patent/CN115108432B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001192185A (en) * | 2000-01-11 | 2001-07-17 | Kayaba Ind Co Ltd | Shock absorber |
| JP2012172829A (en) * | 2011-02-24 | 2012-09-10 | Mitsubishi Electric Corp | Hydraulic shock absorber for elevator |
| CN104477731A (en) * | 2014-12-15 | 2015-04-01 | 重庆和航科技股份有限公司 | Buffer device for composite damping force of elevator |
| CN204917523U (en) * | 2015-03-05 | 2015-12-30 | 吴江市龙昌金属制品厂 | Elevator spring hydraulic absorber |
| CN207078852U (en) * | 2017-08-29 | 2018-03-09 | 重庆三杭蒙特费罗电梯部件有限公司 | A kind of elevator base being easily installed |
| CN109422157A (en) * | 2017-08-29 | 2019-03-05 | 陈国柱 | A kind of cushioning device for elevator |
| CN109573777A (en) * | 2017-09-29 | 2019-04-05 | 上海龙钰电梯配件有限公司 | A kind of elevator buffer device |
| CN207844788U (en) * | 2017-12-20 | 2018-09-11 | 康达电梯有限公司 | A kind of buffer of elevator |
| CN208856716U (en) * | 2018-08-10 | 2019-05-14 | 浙江奥力迅电梯部件有限公司 | A kind of elevator safety buffer device |
| CN109368439A (en) * | 2018-08-29 | 2019-02-22 | 合肥市迅立达电梯有限公司 | A kind of hydraulic elevator |
| CN209322232U (en) * | 2019-01-05 | 2019-08-30 | 浙江省特种设备检验研究院 | A kind of Buffer for elevator convenient for suing and labouring |
| CN112299200A (en) * | 2020-09-22 | 2021-02-02 | 苏州科达液压电梯有限公司 | Safety protection device and safety protection method for hydraulic elevator |
| CN215980239U (en) * | 2021-11-08 | 2022-03-08 | 湖南省经济贸易高级技工学校 | Hydraulic cylinder buffer structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115108432A (en) | 2022-09-27 |
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Effective date of registration: 20240428 Address after: Room 603-B, West Block B, No. 100 Yunlongshan Road, Jianye District, Nanjing City, Jiangsu Province, 210000 Applicant after: Juling (Nanjing) Intelligent Technology Co.,Ltd. Country or region after: China Address before: No. 135, Siqing Road, Zhazuo Town, Xiuwen County, Guiyang City, Guizhou Province, 550299 Applicant before: Luo Changhua Country or region before: China |
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