CN110206963B - Novel pipeline detection robot - Google Patents
Novel pipeline detection robot Download PDFInfo
- Publication number
- CN110206963B CN110206963B CN201910611625.4A CN201910611625A CN110206963B CN 110206963 B CN110206963 B CN 110206963B CN 201910611625 A CN201910611625 A CN 201910611625A CN 110206963 B CN110206963 B CN 110206963B
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- Prior art keywords
- vehicle body
- wheel disc
- box body
- robot
- fixed
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
- B08B9/051—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled the cleaning devices having internal motors, e.g. turbines for powering cleaning tools
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/30—Constructional aspects of the propulsion means, e.g. towed by cables
- F16L55/38—Constructional aspects of the propulsion means, e.g. towed by cables driven by fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/10—Treating the inside of pipes
- F16L2101/12—Cleaning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/30—Inspecting, measuring or testing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Manipulator (AREA)
Abstract
The invention discloses a novel pipeline detection robot, which comprises a vehicle body and a camera arranged on the vehicle body, wherein an air cushion is arranged at the lower part of the vehicle body, a first fan for inflating is arranged on the air cushion, and a propeller thruster is arranged at the lower part of the vehicle body; the front portion of automobile body is provided with the desilting device, includes: the pair of wheel discs are symmetrically arranged on two sides of the front part of the vehicle body, and the wheel discs are arranged to form an included angle which is formed by the axis of each wheel disc and a horizontal plane and inclines upwards, and the included angle ranges from 20 degrees to 40 degrees; and a driving device for driving the pair of rotary discs to rotate. The novel pipeline detection robot can normally advance when water or sludge exists in the pipeline.
Description
Technical Field
The invention relates to the field of pipeline detection equipment. More particularly, the present invention relates to a novel pipeline inspection robot.
Background
The pipeline is applied to various fields, municipal administration, industry and the like, and various problems such as blockage, leakage and the like occur along with the use time limit, and the pipeline needs to be checked and maintained regularly, so that a large number of managed and taught robots are produced. The traveling devices of the prior pipeline robot are mainly wheel type and crawler type, and have the defects of unstable traveling and easy overturning, and simultaneously, the pipeline needs to be pumped and desilted before the pipeline detection, so that the pipeline robot is very inconvenient.
Disclosure of Invention
To achieve these objects and other advantages and in accordance with the purpose of the invention, a novel duct inspection robot is provided, including a vehicle body and a camera mounted on the vehicle body, wherein an air cushion is mounted on a lower portion of the vehicle body, a first fan for air inflation is mounted on the air cushion, and a propeller is mounted on a lower portion of the vehicle body;
the front portion of automobile body is provided with the desilting device, includes:
the pair of wheel discs are symmetrically arranged on two sides of the front part of the vehicle body, and the wheel discs are arranged to form an included angle which is formed by the axis of each wheel disc and a horizontal plane and inclines upwards, and the included angle ranges from 20 degrees to 40 degrees;
and a driving device for driving the pair of rotary discs to rotate.
Preferably, the driving means includes: the shaft lever, the motor and the transmission assembly are connected with the wheel disc;
the transmission assembly includes: the transmission mechanism comprises a transmission shaft, two driving bevel gears, two driven bevel gears and two straight toothed spur gears which are meshed with each other; the transmission shaft is rotatably fixed at the front part in the automobile body shell, a straight-tooth cylindrical gear is fixed in the middle of the transmission shaft and meshed with another straight-tooth cylindrical gear, the other straight-tooth cylindrical gear is driven by a motor, two driving bevel gears are symmetrically fixed at two ends of the transmission shaft, two driven bevel gears are respectively meshed with the two driving bevel gears, and the driven bevel gears are fixed on the shaft rod.
Preferably, the wheel disc is an eccentric wheel disc.
Preferably, the wheel disc comprises a frame and a plurality of S-shaped blades;
the frame comprises an outer frame and six main brackets extending from an eccentric point to the outer frame, the eccentric point and the main brackets are positioned on the same plane, and included angles formed by any two groups of adjacent main brackets are equal; the frame is composed of six groups of S-shaped components, each component corresponds to two adjacent groups of main supports one by one, and the S-shaped curved surfaces of the components are arranged towards the circumferential direction of two sides;
the parts are provided with blades at intervals, and the S-shaped curved surfaces of the blades are arranged towards the circumferential direction of two sides.
Preferably, the automobile further comprises two groups of cleaning devices symmetrically arranged at the front part of the automobile body, and spray heads of the cleaning devices face the wheel disc.
Preferably, the cleaning device includes:
the box body is arranged on two sides of the air cushion, the bottom of the box body is provided with an opening communicated with the outside, and two layers of filter screens are arranged in the box body from top to bottom;
the pipe body comprises a telescopic hose and a hard pipe, wherein the telescopic hose is partially penetrated and fixed in the box body, and the hard pipe is connected with the spray head;
and the high-pressure water pump is connected with the pipe body.
Preferably, the cleaning apparatus further comprises a height adjusting device, the height adjusting device comprising:
the branch pipe is of a hollow structure, is horizontally arranged in the vehicle body, and one end of the branch pipe penetrates through the vehicle body and is fixed with the fixed pulley, and the end, penetrating through the vehicle body, of the branch pipe is closed;
one end of the steel wire rope is connected with the middle part of the top surface of the box body, the steel wire rope is guided by the fixed pulley to drive the box body to move in the vertical direction, and the other end of the steel wire rope penetrates through the branch pipe, extends into the car body and is wound by the winch.
Preferably, the device also comprises a controller and a liquid level sensor; the liquid level sensor is arranged at the lower part of the box body; the liquid level sensor and the winch are both connected with the controller, and the controller controls the winch by collecting data of the liquid level sensor.
The invention at least comprises the following beneficial effects: the utility model provides a pipeline inspection robot is applied to the environment that has water in the pipeline, replaces traditional wheeled or crawler-type through the air cushion, can be more stable through the pipeline, and a pair of rim plate among the desilting device can increase pipeline inspection robot's stability, and the rim plate can dredge or loose effect in the place of silt blocking node in the pipeline simultaneously, more is favorable to the air cushion to march.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of a dredging device in a novel pipeline detection robot;
FIG. 2 is a schematic structural diagram of a cleaning device in the novel pipeline inspection robot;
FIG. 3 is a schematic view of a wheel disc;
FIG. 4 is a schematic view of a blade;
fig. 5 is a schematic view of a propeller setup.
The device comprises a vehicle body 1, an air cushion 2, a propeller 3, a dredging device 4, a wheel 41, a shaft 42, a motor 43, a transmission shaft 44, a driving bevel gear 45, a driven bevel gear 46, a spur gear 47, a bearing 48, an outer frame 411, a main bracket 412, a blade 413, a cleaning device 5, a box 51, a hose 52, a hard pipe 53, a spray head 54, a high-pressure water pump 55, a filter screen 56, a branch pipe 61, a steel wire rope 62, a winch 63 and a fixed pulley 64.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being 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.
As shown in fig. 1 to 5, the invention provides a novel pipeline inspection robot, which comprises a vehicle body 1 and a camera arranged on the vehicle body 1, wherein an air cushion 2 is arranged at the lower part of the vehicle body 1, a first fan for air inflation is arranged on the air cushion 2, and a propeller 3 is arranged at the lower part of the vehicle body 1;
the front portion of the vehicle body 1 is provided with a dredging device 4, including:
the pair of wheel discs 41 are symmetrically arranged on two sides of the front part of the vehicle body 1, and the wheel discs 41 are arranged in such a way that the axes of the wheel discs 41 and the horizontal plane form an inclined angle which is inclined upwards and ranges from 20 degrees to 40 degrees;
and a driving device for driving the pair of disks 41 to rotate.
In above-mentioned technical scheme, the pipeline inspection robot of this application is applied to the environment that has water in the pipeline, replaces traditional wheeled or crawler-type through air cushion 2, can be more stable through the pipeline, and a pair of rim plate 41 among the desilting device 4 can increase pipeline inspection robot's stability, and rim plate 41 can dredge or loose effect in the place of silt blocking the knot in the pipeline simultaneously, more is favorable to air cushion 2 to march.
In another aspect, the driving device includes: a shaft rod 42 connected with the wheel disc 41, a motor 43 and a transmission assembly;
the transmission assembly includes: a transmission shaft 44, two driving bevel gears 45, two driven bevel gears 46 and two mutually meshed spur gears 47; the transmission shaft 44 is rotatably fixed at the front part in the shell of the vehicle body 1, a spur gear 47 is fixed at the middle part of the transmission shaft 44 and is meshed with another spur gear 47, the other spur gear 47 is driven by a motor 43, two driving helical gears 45 are symmetrically fixed at two ends of the transmission shaft 44, two driven helical gears 46 are respectively meshed with the two driving helical gears 45, the driven helical gears 46 are fixed on the shaft rod 42, a bearing is further arranged on the shaft rod 42, and the bearing is fixedly connected with the shell of the vehicle body 1 through the bearing 48 and a connecting piece. In the above technical solution, the motor 43 drives the two mutually meshed spur gears 47 to rotate, so as to drive the transmission shaft 44 to rotate, thereby driving the wheel disc 41 to rotate.
In another technical scheme, the wheel disc 41 is an eccentric wheel disc 41, and the depth of the pipeline detection robot reaching the sludge is constantly changed when the eccentric wheel disc 41 rotates in the advancing process, so that the sludge at different depths can be dispersed, and the dispersing effect is improved.
In another embodiment, the wheel disc 41 includes a frame and a plurality of S-shaped blades 413;
the frame comprises an outer frame 411 and six main brackets 412 extending from an eccentric point to the outer frame 411, the eccentric point and the main brackets 412 are positioned on the same plane, and the included angles formed by any two groups of adjacent main brackets 412 are equal; the frame is composed of six groups of S-shaped components, each component corresponds to two adjacent groups of main brackets 412 one by one, and the S-shaped curved surfaces of the components are arranged towards the circumferential direction of two sides;
the parts are provided with blades 413 at intervals, and S-shaped curved surfaces of the blades 413 are arranged towards the circumferential direction of two sides.
In the above technical solution, the part forming the frame is an S-shaped curved surface and is circumferentially arranged to both sides, so that the contact area between the wheel disc 41 and the sludge blockage part when rotating can be increased, the sludge removal effect can be improved, and the sludge blockage part can be cut and broken up by the auxiliary blade 413.
In another technical scheme, the cleaning device further comprises two groups of cleaning devices 5 which are symmetrically arranged at the front part of the vehicle body 1, and the spray heads 54 of the cleaning devices 5 face the wheel disc 41.
In another solution, the cleaning device 5 comprises:
the box body 51 is arranged on two sides of the air cushion 2, the bottom of the box body 51 is provided with an opening communicated with the outside, and two layers of filter screens 56 are arranged in the box body 51 up and down;
a pipe body including a flexible pipe 52 partially inserted and fixed in the case body 51 and a hard pipe 53 connected to the head 54;
and a high pressure water pump 55 connected to the pipe body.
In the above technical scheme, the bottom opening of the box body 51 enables water in the pipeline to enter the box body 51 after being filtered by the filter screen, the high-pressure water pump 55 is utilized to pump the water into the pipe body, the wheel disc 41 is cleaned through the spray head 54, and the problem of agglomeration on the wheel disc 41 is prevented.
In another solution, the cleaning device 5 further comprises a height adjustment device, which comprises:
the branch pipe 61 is of a hollow structure, the branch pipe 61 is horizontally arranged in the vehicle body 1, one end of the branch pipe 61 penetrates through the vehicle body 1 and is fixed with the fixed pulley, and one end of the branch pipe 61, which penetrates through the vehicle body 1, is closed;
one end of the wire rope 62 is connected with the middle part of the top surface of the box body 51, the wire rope 62 is guided by the fixed pulley to drive the box body 51 to move along the vertical direction, and the other end of the wire rope 62 penetrates through the branch pipe 61, extends into the vehicle body 1, and is wound by the winding machine 63.
In another technical scheme, the device also comprises a controller and a liquid level sensor; the liquid level sensor is arranged at the lower part of the box body 51; the liquid level sensor and the winch 63 are both connected with a controller, and the controller controls the winch 63 by collecting data of the liquid level sensor.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (5)
1. A novel pipeline detection robot comprises a robot body and a camera arranged on the robot body, and is characterized in that an air cushion is arranged at the lower part of the robot body, a first fan used for inflating is arranged on the air cushion, and a propeller thruster is arranged at the lower part of the robot body;
the front portion of automobile body is provided with the desilting device, includes:
the pair of wheel discs are symmetrically arranged on two sides of the front part of the vehicle body, and the wheel discs are arranged to form an included angle which is formed by the axis of each wheel disc and a horizontal plane and inclines upwards, and the included angle ranges from 20 degrees to 40 degrees;
a driving device for driving the pair of wheel discs to rotate;
the driving device includes: the shaft lever, the motor and the transmission assembly are connected with the wheel disc;
the transmission assembly includes: the transmission mechanism comprises a transmission shaft, two driving bevel gears, two driven bevel gears and two straight toothed spur gears which are meshed with each other; the transmission shaft is rotatably fixed at the front part in the body shell, a straight-tooth cylindrical gear is fixed in the middle of the transmission shaft and is meshed with another straight-tooth cylindrical gear, the other straight-tooth cylindrical gear is driven by a motor, two driving helical gears are symmetrically fixed at two ends of the transmission shaft, two driven helical gears are respectively meshed with the two driving helical gears, the driven helical gears are fixed on the shaft rod, and the shaft rod is also provided with a bearing and is fixedly connected with the body shell through the bearing and a connecting piece;
the wheel disc is an eccentric wheel disc;
the wheel disc comprises a frame and a plurality of S-shaped blades;
the frame comprises an outer frame and six main brackets extending from an eccentric point to the outer frame, the eccentric point and the main brackets are positioned on the same plane, and included angles formed by any two groups of adjacent main brackets are equal; the frame is composed of six groups of S-shaped components, each component corresponds to two adjacent groups of main supports one by one, and the S-shaped curved surfaces of the components are arranged towards the circumferential direction of two sides;
the parts are provided with blades at intervals, and the S-shaped curved surfaces of the blades are arranged towards the circumferential direction of two sides.
2. The novel pipeline inspection robot as claimed in claim 1, further comprising two sets of cleaning devices symmetrically disposed at the front portion of the vehicle body, wherein the nozzles of the cleaning devices face the wheel disc.
3. The novel pipeline inspection robot as recited in claim 2, wherein said cleaning device comprises:
the box body is arranged on two sides of the air cushion, the bottom of the box body is provided with an opening communicated with the outside, and two layers of filter screens are arranged in the box body from top to bottom;
the pipe body comprises a telescopic hose and a hard pipe, wherein the telescopic hose is partially penetrated and fixed in the box body, and the hard pipe is connected with the spray head;
and the high-pressure water pump is connected with the pipe body.
4. The new pipeline inspection robot as recited in claim 3, wherein said cleaning device further comprises a height adjustment device, said height adjustment device comprising:
the branch pipe is of a hollow structure, is horizontally arranged in the vehicle body, and one end of the branch pipe penetrates through the vehicle body and is fixed with the fixed pulley, and the end, penetrating through the vehicle body, of the branch pipe is closed;
one end of the steel wire rope is connected with the middle part of the top surface of the box body, the steel wire rope is guided by the fixed pulley to drive the box body to move in the vertical direction, and the other end of the steel wire rope penetrates through the branch pipe, extends into the car body and is wound by the winch.
5. The novel pipeline inspection robot as recited in claim 4, further comprising a controller and a level sensor; the liquid level sensor is arranged at the lower part of the box body; the liquid level sensor and the winch are both connected with the controller, and the controller controls the winch by collecting data of the liquid level sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910611625.4A CN110206963B (en) | 2019-07-08 | 2019-07-08 | Novel pipeline detection robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910611625.4A CN110206963B (en) | 2019-07-08 | 2019-07-08 | Novel pipeline detection robot |
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| Publication Number | Publication Date |
|---|---|
| CN110206963A CN110206963A (en) | 2019-09-06 |
| CN110206963B true CN110206963B (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910611625.4A Active CN110206963B (en) | 2019-07-08 | 2019-07-08 | Novel pipeline detection robot |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1998035766A1 (en) * | 1997-02-14 | 1998-08-20 | Antonio Ramos Hernando | Automatic remote control device applicable to the cleaning and disinfection of interiors of air conditioning and ventilation ducts |
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| CN201133548Y (en) * | 2007-11-07 | 2008-10-15 | 北京和升达信息安全技术有限公司 | Device capable of freely walking in pipeline |
| CN102817389A (en) * | 2011-06-09 | 2012-12-12 | 吴勇 | Underwater robot capable of diving in seabed to perform dredging |
| CN203273187U (en) * | 2013-03-06 | 2013-11-06 | 浙江理工大学 | Pipeline robot walking device driven by fluid |
| CN204507227U (en) * | 2015-03-27 | 2015-07-29 | 宁波市北仑区水利局 | A kind of be applied to underwater security protection can automatic lifting monitoring case |
| CN205706939U (en) * | 2016-04-29 | 2016-11-23 | 中国航空工业集团公司北京长城航空测控技术研究所 | Air-cushion type robot moving platform |
| CN107442529A (en) * | 2017-08-16 | 2017-12-08 | 南宁众创空间科技有限公司 | A kind of conveying inside pipe wall automatic cleaning apparatus |
| CN206731718U (en) * | 2017-04-11 | 2017-12-12 | 吴文娟 | Water supply project pipeline cleaning robot |
| CN109078937A (en) * | 2018-08-17 | 2018-12-25 | 周云香 | A kind of pipeline cleaning robot |
| CN210510743U (en) * | 2019-07-08 | 2020-05-12 | 大成科创基础建设股份有限公司 | Novel pipeline detection robot |
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2019
- 2019-07-08 CN CN201910611625.4A patent/CN110206963B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998035766A1 (en) * | 1997-02-14 | 1998-08-20 | Antonio Ramos Hernando | Automatic remote control device applicable to the cleaning and disinfection of interiors of air conditioning and ventilation ducts |
| CN2366455Y (en) * | 1999-02-05 | 2000-03-01 | 中水南通海狮船舶机械公司 | Automatic underwater dredger |
| CN200971515Y (en) * | 2006-11-22 | 2007-11-07 | 天津毕晟智能科技开发有限公司 | Double-disc milling type ditching and desilting machine |
| CN201133548Y (en) * | 2007-11-07 | 2008-10-15 | 北京和升达信息安全技术有限公司 | Device capable of freely walking in pipeline |
| CN102817389A (en) * | 2011-06-09 | 2012-12-12 | 吴勇 | Underwater robot capable of diving in seabed to perform dredging |
| CN203273187U (en) * | 2013-03-06 | 2013-11-06 | 浙江理工大学 | Pipeline robot walking device driven by fluid |
| CN204507227U (en) * | 2015-03-27 | 2015-07-29 | 宁波市北仑区水利局 | A kind of be applied to underwater security protection can automatic lifting monitoring case |
| CN205706939U (en) * | 2016-04-29 | 2016-11-23 | 中国航空工业集团公司北京长城航空测控技术研究所 | Air-cushion type robot moving platform |
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| CN107442529A (en) * | 2017-08-16 | 2017-12-08 | 南宁众创空间科技有限公司 | A kind of conveying inside pipe wall automatic cleaning apparatus |
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| CN210510743U (en) * | 2019-07-08 | 2020-05-12 | 大成科创基础建设股份有限公司 | Novel pipeline detection robot |
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| Publication number | Publication date |
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| CN110206963A (en) | 2019-09-06 |
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Effective date of registration: 20201223 Address after: 255000 No.49 Zhongrun Avenue, high tech Zone, Zibo City, Shandong Province Patentee after: Zibo Prospecting Surveying Mapping Research Institute Co.,Ltd. Address before: 430090 No.6, Jindong Road, Dongjing street, Hannan District, Wuhan City, Hubei Province Patentee before: DACHENG KECHUANG INFRASTRUCTURE Co.,Ltd. |