CN112627881B - A goods and materials are carried drilling rescue device for mine collapses - Google Patents
A goods and materials are carried drilling rescue device for mine collapses Download PDFInfo
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- CN112627881B CN112627881B CN202110050264.8A CN202110050264A CN112627881B CN 112627881 B CN112627881 B CN 112627881B CN 202110050264 A CN202110050264 A CN 202110050264A CN 112627881 B CN112627881 B CN 112627881B
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- pipe
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- oil
- chassis
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- 239000000463 material Substances 0.000 title claims abstract description 45
- 238000005553 drilling Methods 0.000 title claims abstract description 32
- 239000003921 oil Substances 0.000 claims abstract description 56
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 35
- 239000001301 oxygen Substances 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 239000010687 lubricating oil Substances 0.000 claims abstract description 23
- 239000002689 soil Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000013021 overheating Methods 0.000 claims description 3
- 239000007858 starting material Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract 1
- 230000004083 survival effect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a material conveying, drilling and rescuing device for mine collapse, which comprises a chassis, a transmission device is arranged in the chassis, a transmission space is arranged in the chassis, an outer pipe is connected in the chassis in a sliding way, the outer pipe is a main body for executing drilling, a material conveying pipeline device is arranged in the outer pipe, the material conveying pipeline device comprises a middle pipe and an inner pipe which are fixedly connected in the outer pipe from outside to inside respectively, the middle pipe is provided with a travel oil path for conveying lubricating oil for preventing the drill bit from being overheated during drilling between the outer pipes, the device can directly and vertically drill holes in the soil layer aiming at the region with larger depth of the trapped region, the damage to the stability of rock soil is small, secondary damage to a trapped area structure is avoided, a trapped space can be rapidly reached, and the survival of trapped personnel is maintained by conveying moisture and oxygen.
Description
Technical Field
The invention relates to the related field of drilling machines, in particular to a material conveying, drilling and rescuing device for mine collapse.
Background
The greatest safety threat to people trapped after mine collapse often comes from the lack of basic elements capable of maintaining life, and nowadays rescue teams do not have rescue devices capable of rapidly and effectively transporting water and oxygen to the trapped area for mine collapse, and since mine collapse once occurs, a large number of workers are trapped, so that a rescue device for the situation is necessary.
Disclosure of Invention
The invention aims to provide a material conveying, drilling and rescuing device for mine collapse, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: .
Preferably, the material conveying, drilling and rescuing device for mine collapse comprises a chassis, wherein a transmission device is arranged in the chassis, a transmission space is arranged in the chassis, an outer pipe is connected in the chassis in a sliding manner and serves as a main body for drilling, a material conveying pipeline device is arranged in the outer pipe and comprises a middle pipe and an inner pipe which are fixedly connected in the outer pipe from outside to inside respectively, a high-pressure oil area is arranged at the bottom of the outer pipe, a lubricating oil journey oil way and a return oil way for conveying lubricating oil for preventing drill bit overheating during drilling are arranged between the middle pipe and the outer pipe, a water storage space for storing water is arranged between the inner pipe and the middle pipe, a high-pressure oxygen space for conveying oxygen is arranged between the inner pipes, a pressure control device is arranged in the high-pressure oxygen space, and the pressure control devices are distributed in a bilateral symmetry manner, above-mentioned pressure-controlled device includes the inner tube, it has two to articulate in the inner tube the bearing plate offsets, the bearing plate downside articulates there is the bearing connecting rod, the bearing connecting rod downside articulates there is the push rod, push rod downside fixedly connected with baffle, baffle downside fixedly connected with drill bit space, material transportation pipe device upside is equipped with material power and provides the device, the chassis outside is equipped with and is used for this device and land fixed connection's fixing device.
Preferably, the transmission device comprises a motor partition fixedly connected to the right side of the chassis, a motor is fixedly connected to the upper side of the motor partition, the left side of the motor is in power connection with a first motor shaft, a first bevel gear is fixedly connected to the first motor shaft, the chassis is provided with the transmission space, the lower side of the inner wall of the transmission space is rotatably connected with a transmission shaft, the upper side of the transmission shaft is fixedly connected with a second bevel gear, the right side of the second bevel gear is meshed with the first bevel gear, the transmission shaft is fixedly connected with a drilling gear, the lower side of the inner wall of the transmission space is fixedly connected with a threaded sleeve, the threaded sleeve is in threaded connection with the outer side of the outer tube, and when the soil needs to be drilled, the motor is started, so that the first motor shaft rotates, and the first bevel gear rotates, thereby rotating the second bevel gear and thereby the drive shaft and thereby the drilling gear and thereby the threaded sleeve and thereby the outer tube slides downwards.
Preferably, the fixing device comprises a second motor shaft which is in power connection with the lower side of the motor, a belt pulley is fixedly connected to the second motor shaft, a sleeve is in threaded connection with the second motor shaft, the sleeve is in sliding connection with the cushion block, the belt pulley is in connection with the belt, and when the device and the ground are required to be fixed, the motor is started, so that the second motor shaft rotates, the belt pulley rotates, the two belt pulleys are driven to rotate through the belt, the sleeve slides downwards, the screw enters the ground, and a fixing effect is achieved.
As preferred, material power provides the device and includes material platform, material platform upside fixedly connected with storage tank, the last fixedly connected with top cap of side of material platform, the defeated oil pipe of the first defeated oil pipe of side fixedly connected with, gas-supply pipe, second is defeated oil pipe on the top cap, the storage tank passes through the gas-supply pipe with the hyperbaric oxygen space communicates with each other, through control the high-pressure oxygen air current can be emitted to the storage tank, it has the lubricating oil that the high pressure flows to lead to in the defeated oil pipe of first defeated oil pipe and the second, the fixed material baffle that is equipped with of top cap downside, in the material baffle respectively with the outer tube the inner tube well tub sliding connection.
Preferably, the lower side surface of the ground is provided with a trapped area, when the outer pipe drills a hole in the ground, high-pressure lubricating oil is communicated between the going oil path and the returning oil path, so that the oil pressure in the high-pressure oil area is maintained at a high level, the oil pressure is balanced with the high-pressure oxygen flow in the high-pressure oxygen space at the upper side, when the outer pipe descends continuously, the ground is dug through, so that the high-pressure oil area is communicated with the trapped area, the high-pressure lubricating oil is decompressed instantaneously, so that the high-pressure oxygen flow at the upper side pushes the two pressure bearing plates to rotate, the push rod is pushed by the pressure bearing connecting rod to slide leftwards, so that the partition plate slides leftwards, the lubricating oil baffle plate slides leftwards, so that the high-pressure oxygen space is communicated with the drill bit space, and water in the water storage space flows out, and meanwhile, the communication between the going oil way and the return oil way and the high-pressure oil area is cut off.
In conclusion, the beneficial effects of the invention are as follows: this device can be through at the regional great region of the regional degree of depth of being stranded, and stability to ground destroys lessly through the direct perpendicular drilling in the soil layer, avoids causing the secondary to be destroyed to the regional structure of being stranded, can also reach the space of being stranded fast, through carrying moisture and oxygen in order to maintain stranded personnel's existence.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of an overall full-section main view structure of a material conveying, drilling and rescuing device for mine collapse, according to the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
fig. 3 is a diagram illustrating an operation state of the pressure control device of fig. 1 according to the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The invention will now be described in detail with reference to fig. 1-3, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, front, rear direction described below corresponds to the front, back, left, right, top, bottom direction of the view of fig. 1, fig. 1 is a front view of the apparatus of the present invention, and the direction shown in fig. 1 corresponds to the front, back, left, right, top, bottom direction of the apparatus of the present invention.
Referring to fig. 1-3, an embodiment of the present invention is shown: a material conveying, drilling and rescuing device for mine collapse comprises a chassis 11, wherein a transmission device is arranged in the chassis 11, a transmission space 20 is formed in the chassis 11, an outer pipe 47 is connected in the chassis 11 in a sliding manner, the outer pipe 47 is a main body for executing drilling, a material conveying pipeline device is arranged in the outer pipe 47, the material conveying pipeline device comprises a middle pipe 46 and an inner pipe 45 which are fixedly connected in the outer pipe 47 from outside to inside respectively, a high-pressure oil area 72 is arranged at the bottom of the outer pipe 47, a lubricating oil journey oil way 43 and a return oil way 41 for conveying lubricating oil for preventing drill bit overheating during drilling are arranged between the middle pipe 46 and the outer pipe 47, a water storage space 71 for storing water is arranged between the inner pipe 45 and the middle pipe 46, a high-pressure oxygen space 42 for conveying oxygen is arranged between the inner pipe 45, and a pressure control device is arranged in the high-pressure oxygen space 42, pressure-controlled device bilateral symmetry distributes, and above-mentioned pressure-controlled device includes inner tube 45, it has two to articulate in the inner tube 45 bearing plate 51 offsets, bearing plate 51 downside articulates there is pressure-bearing connecting rod 52, pressure-bearing connecting rod 52 downside articulates there is push rod 53, push rod 53 downside fixedly connected with baffle 55, baffle 55 downside fixedly connected with drill bit space 57, material transportation pipe device upside is equipped with material power provides the device, the 11 outsides in chassis are equipped with and are used for this device and the fixing device of 70 fixed connection in soil.
In addition, in one embodiment, the transmission device includes a motor partition 18 fixedly connected to the right side of the chassis 11, a motor 15 fixedly connected to the upper side of the motor partition 18, a first motor shaft 16 dynamically connected to the left side of the motor 15, a first bevel gear 17 fixedly connected to the first motor shaft 16, the chassis 11 having the transmission space 20 formed therein, a transmission shaft 31 rotatably connected to the lower side of the inner wall of the transmission space 20, a second bevel gear 30 fixedly connected to the upper side of the transmission shaft 31, a drilling gear 32 fixedly connected to the right side of the second bevel gear 30 engaged with the first bevel gear 17, a threaded sleeve 14 fixedly connected to the lower side of the inner wall of the transmission space 20, the threaded sleeve 14 threadedly connected to the outer side of the outer tube 47, when the ground 70 needs to be drilled, the motor 15 is started, thereby rotating the first motor shaft 16 and thus the first bevel gear 17 and thus the second bevel gear 30 and thus the transmission shaft 31 and thus the drilling gear 32 and thus the threaded sleeve 14 and thus the outer tube 47 slides downwards.
In addition, in one embodiment, the fixing device comprises a second motor shaft 21 which is in power connection with the lower side of the motor 15, a belt pulley 22 is fixedly connected onto the second motor shaft 21, a sleeve 23 is in threaded connection onto the second motor shaft 21, the sleeve 23 is in sliding connection with the cushion block 80, three belt pulleys 22 are connected through a belt, and when the device needs to be fixed to the ground, the motor 15 is started, so that the second motor shaft 21 rotates, the belt pulley 22 rotates, the two belt pulleys 22 are driven to rotate through the belt, the sleeve 23 slides downwards, the screw 25 enters the ground 70, and the fixing effect is achieved.
In addition, in one embodiment, the material power provides the device includes material platform 12, material platform 12 upside fixedly connected with storage tank 64, side fixedly connected with top cap 40 on the material platform 12, the first defeated oil pipe 66 of side fixedly connected with, gas-supply pipe 65, the defeated oil pipe 67 of second on the top cap 40, storage tank 64 passes through gas-supply pipe 65 with hyperbaric oxygen space 42 communicates with each other, through control the storage tank 64 can emit the hyperbaric oxygen air current, lead to the lubricating oil that has the high pressure flow in the defeated oil pipe 66 of first defeated oil pipe and the second defeated oil pipe 67, the fixed material baffle 50 that is equipped with of top cap 40 downside, in the material baffle 50 respectively with outer tube 47, inner tube 45 well pipe 46 sliding connection.
In addition, in one embodiment, a trapped area 74 is provided on the lower side of the ground 70, when the outer pipe 47 drills a hole in the ground 70, high-pressure lubricating oil is communicated between the forward oil path 43 and the backward oil path 41, so that the oil pressure in the high-pressure oil area 72 is maintained at a high level, and thus the oil pressure is balanced with the high-pressure oxygen flow in the high-pressure oxygen space 42 on the upper side, when the outer pipe 47 continues to descend, so that the ground 70 is excavated, so that the high-pressure oil area 72 is communicated with the trapped area 74, the high-pressure lubricating oil is instantly decompressed, so that the high-pressure oxygen flow on the upper side pushes the two pressure plates 51 to rotate, so that the push rod 53 is pushed by the pressure-containing connecting rod 52 to slide to the left, so that the partition plate 55 slides to the left, so that the lubricating oil baffle plate 56 slides to the left, so that the high-pressure oxygen space 42 is communicated with the drill bit space 57, thereby allowing the water in the water storage space 71 to flow out while cutting off the communication between the forward oil path 43 and the return oil path 41 and the high-pressure oil zone 72.
In an initial state, high pressure oxygen is stored in the reservoir 64, and high pressure lubricating oil flows through the first oil delivery pipe 66.
When it is desired to fix the device to the ground, the motor 15 is activated, so as to rotate the second motor shaft 21, and therefore the pulleys 22, and therefore the two pulleys 22, driven by the belt, are rotated, so as to slide the sleeve 23 downwards, so as to allow the screw 25 to enter the ground 70, thus serving the fixing function;
when it is desired to drill the ground 70, the motor 15 is activated so as to rotate the first motor shaft 16, so as to rotate the first bevel gear 17, so as to rotate the second bevel gear 30, so as to rotate the transmission shaft 31, so as to rotate the drilling gear 32, so as to rotate the threaded sleeve 14, so as to slide the outer tube 47 downwards;
when the outer pipe 47 is continuously lowered, so that the ground 70 is dug through, and the high-pressure oil area 72 is communicated with the trapped area 74, the high-pressure lubricating oil is instantly decompressed, so that the high-pressure oxygen flow at the upper side pushes the two pressure-bearing plates 51 to rotate, so that the push rod 53 is pushed by the pressure-bearing connecting rod 52 to slide leftwards, so that the partition plate 55 slides leftwards, so that the lubricating oil baffle plate 56 slides leftwards, so that the high-pressure oxygen space 42 is communicated with the drill bit space 57, so that the water in the water storage space 71 flows out, and the communication between the going oil path 43 and the returning oil path 41 and the high-pressure oil area 72 is cut off;
thereby spraying water and oxygen into the trapped region 74 to ensure the life safety of the trapped person in the trapped region 74.
The invention has the beneficial effects that: this device can be through at the regional great region of the regional degree of depth of being stranded, and stability to ground destroys lessly through the direct perpendicular drilling in the soil layer, avoids causing the secondary to be destroyed to the regional structure of being stranded, can also reach the space of being stranded fast, through carrying moisture and oxygen in order to maintain stranded personnel's existence.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (5)
1. The utility model provides a goods and materials are carried drilling rescue device for mine collapse, includes the chassis, its characterized in that: the drilling machine comprises a chassis, wherein a transmission device is arranged in the chassis, a transmission space is arranged in the chassis, an outer pipe is connected in the chassis in a sliding manner, the outer pipe is a main body for executing drilling, a material conveying pipeline device is arranged in the outer pipe, the material conveying pipeline device comprises a middle pipe and an inner pipe which are fixedly connected with the outer pipe from outside to inside respectively, a high-pressure oil area is arranged at the bottom of the outer pipe, a lubricating oil journey oil way and a return oil way for conveying lubricating oil for preventing drill bit overheating during drilling are arranged between the middle pipe and the outer pipe, a water storage space for storing water is arranged between the inner pipe and the middle pipe, a high-pressure oxygen space for conveying oxygen is arranged between the inner pipes, a pressure control device is arranged in the high-pressure oxygen space and is bilaterally and symmetrically distributed, the pressure control device comprises the inner pipe, and two pressure bearing plates are hinged in the inner pipe and abut against each other, the utility model discloses a material transportation pipeline device, including bearing plate, push rod, baffle downside fixedly connected with baffle, baffle downside fixedly connected with drill bit space, material transportation pipeline device upside is equipped with material power and provides the device, the chassis outside is equipped with and is used for this device and soil fixed connection's fixing device.
2. The material conveying and drilling rescue device for mine collapse according to claim 1, characterized in that: the transmission device comprises a motor clapboard fixedly connected with the right side surface of the chassis, a motor is fixedly connected with the upper side surface of the motor clapboard, the left side surface of the motor is in power connection with a first motor shaft, a first bevel gear is fixedly connected onto the first motor shaft, the transmission space is arranged in the chassis, the lower side surface of the inner wall of the transmission space is rotatably connected with a transmission shaft, a second bevel gear is fixedly connected onto the upper side surface of the transmission shaft, the right side of the second bevel gear is meshed with the first bevel gear, a drilling gear is fixedly connected onto the transmission shaft, a threaded sleeve is fixedly connected onto the lower side surface of the inner wall of the transmission space and is in threaded connection with the outer side of the outer tube, when the soil needs to be drilled, the motor is started, so that the first motor shaft is rotated, the first bevel gear is rotated, and the second bevel gear is rotated, thereby rotating the drive shaft and thereby the drilling gear and thereby the threaded sleeve and thereby the outer tube.
3. The material conveying and drilling rescue device for mine collapse according to claim 2, characterized in that: fixing device includes motor downside power is connected with the second motor shaft, fixedly connected with belt pulley on the second motor shaft, threaded connection has the sleeve on the second motor shaft, sleeve sliding connection cushion, it is three connect by the belt between the belt pulley, when needs are fixed device and ground, the starter motor to make the second motor shaft rotate, thereby make the belt pulley rotates, thereby drives two belt pulleys through the belt and rotates, thereby makes the sleeve slide downwards, thereby makes the screw get into in the soil, thereby plays fixed effect.
4. The material conveying and drilling rescue device for mine collapse according to claim 3, characterized in that: the material power provides the device and includes material platform, material platform upside fixedly connected with storage tank, the last fixedly connected with top cap of side of material platform, the defeated oil pipe of the first defeated oil pipe of side fixedly connected with, gas-supply pipe, second is defeated oil pipe on the top cap, the storage tank passes through the gas-supply pipe with the hyperbaric oxygen space communicates with each other, through control the high-pressure oxygen air current can be emitted to the storage tank, it has the lubricating oil that the high pressure flows to lead to in the defeated oil pipe of first defeated oil pipe and second, the fixed material baffle that is equipped with of top cap downside, in the material baffle respectively with the outer tube the inner tube well pipe well sliding connection.
5. The material conveying and drilling rescue device for mine collapse according to claim 4, characterized in that: when the outer pipe drills in the ground, high-pressure lubricating oil is communicated between the outer pipe and the going oil way and the returning oil way, so that the oil pressure in the high-pressure oil area is maintained at a high level, the high-pressure lubricating oil is balanced with high-pressure oxygen flow in the high-pressure oxygen space on the upper side, when the outer pipe continues to descend, the ground is dug through, the high-pressure oil area is communicated with the trapped area, the high-pressure lubricating oil is instantly decompressed, so that the high-pressure oxygen flow on the upper side pushes the two pressure bearing plates to rotate, the push rod is pushed by the pressure bearing connecting rod to slide leftwards, the partition plate slides leftwards, the lubricating oil baffle plate slides leftwards, the high-pressure oxygen space is communicated with the drill bit space, and water in the water storage space flows out, and meanwhile, the communication between the going oil way and the return oil way and the high-pressure oil area is cut off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110050264.8A CN112627881B (en) | 2021-01-14 | 2021-01-14 | A goods and materials are carried drilling rescue device for mine collapses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110050264.8A CN112627881B (en) | 2021-01-14 | 2021-01-14 | A goods and materials are carried drilling rescue device for mine collapses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112627881A CN112627881A (en) | 2021-04-09 |
| CN112627881B true CN112627881B (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110050264.8A Active CN112627881B (en) | 2021-01-14 | 2021-01-14 | A goods and materials are carried drilling rescue device for mine collapses |
Country Status (1)
| Country | Link |
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| CN (1) | CN112627881B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1312126B1 (en) * | 1999-04-12 | 2002-04-09 | Domenico Piatti | FIRE-FIGHTING ROBOT FOR SUSPENDED TUNNELS, REMOTE CONTROLLED, TELESCOPIC; WITH AUTOMATIC CONNECTION TO THE FIXED WATER PIPE, |
| CN102061934A (en) * | 2009-11-13 | 2011-05-18 | 徐克林 | Underground refuge and rescue device |
| CN105510396B (en) * | 2015-11-24 | 2018-06-29 | 山东科技大学 | A kind of test device and test method for coal-bed flooding wetting range |
| CN105649671A (en) * | 2016-01-22 | 2016-06-08 | 谭荣兵 | Multifunctional mine life rescue pipe |
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2021
- 2021-01-14 CN CN202110050264.8A patent/CN112627881B/en active Active
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| CN112627881A (en) | 2021-04-09 |
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Effective date of registration: 20220810 Address after: 400000 group 1, Daba village, Yushan Town, Pengshui Miao and Tujia Autonomous County, Chongqing Applicant after: CHONGQING TIANYANG MINING Co.,Ltd. Address before: No. 114, Xingang West Road, Haizhu District, Guangzhou, Guangdong 510260 Applicant before: Guangzhou Guxin Technology Co.,Ltd. |
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