CN108930410B - Tap system for concrete pouring and concrete pouring tap process - Google Patents
Tap system for concrete pouring and concrete pouring tap process Download PDFInfo
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- CN108930410B CN108930410B CN201811037323.2A CN201811037323A CN108930410B CN 108930410 B CN108930410 B CN 108930410B CN 201811037323 A CN201811037323 A CN 201811037323A CN 108930410 B CN108930410 B CN 108930410B
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- compaction
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- fluted disc
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
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- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to a compaction system for concrete pouring and a concrete pouring compaction process, which comprise a compaction box, a compaction motor and a compaction device, wherein the compaction motor is installed inside the compaction box, the front end surface of the compaction box is provided with the compaction device, the compaction device comprises a compaction mounting frame, the left side surface and the right side surface of the compaction mounting frame are provided with through holes, a compaction connecting plate is installed in the through holes in a sliding fit mode, the compaction connecting plate is provided with round holes, the upper end surface of the compaction connecting plate is uniformly provided with a vibration motor, the lower end of the vibration motor is provided with a vibration rod, the vibration rod penetrates through the round holes, and the right side surface of the compaction connecting plate is provided with a compaction mechanism. The invention can solve the problems of non-perpendicularity, too slow insertion, too fast extraction, poor compaction effect, low working efficiency and the like when the vibration rod is inserted into concrete in the concrete pouring process, can realize the function of automatically compacting the concrete, and has the advantages of simple working procedure, conformity with the process requirements in the compaction process, good compaction effect and high working efficiency.
Description
Technical Field
The invention relates to the field of buildings, in particular to a concrete pouring compaction system and a concrete pouring compaction process.
Background
With the acceleration of the level of urbanization construction, the buildings, roads and the like in cities are more and more constructed, the buildings in residential areas are mostly of concrete-poured frame structures, and the concrete-poured frame structures are good in building stability and resistant to earthquakes, so that concrete needs to be compacted during concrete pouring to achieve a good stability effect, and a compactor in the existing equipment has certain defects during working.
According to the material of concrete with pour the technological requirement and in real time vibrating to the concrete, the vibrations pole will be perpendicular quick insert in the concrete, need slow extraction concrete when extracting the vibrations pole, can keep away like this and leave the space in the concrete when extracting the vibrations pole, most all be artificial control vibrations pole in current plain bumper, it is out of plumb when probably having the vibrations pole to insert the concrete, insert and extract too fast and concrete compaction effect subalternation problem slowly, and manual control, work efficiency is lower.
Disclosure of Invention
In order to solve the problems, the invention provides a concrete pouring tapping system and a concrete pouring tapping process, which can solve the problems of non-perpendicularity, too slow insertion, too fast pulling-out, poor tapping effect, low working efficiency and the like when a vibrating rod is inserted into concrete in the concrete pouring process, can realize the automatic tapping function of the concrete, and have the advantages of simple process, meeting the process requirements in the tapping process, good tapping effect and high working efficiency.
In order to achieve the above object, the present invention adopts the following technical scheme that a compaction system for concrete pouring comprises a compaction box, a compaction motor and a compaction device, wherein the compaction motor is installed inside the compaction box, and the compaction device is installed on the front end surface of the compaction box.
The compaction device comprises a compaction mounting rack, through holes are arranged on the left side surface and the right side surface of the compaction mounting rack, a compaction connecting plate is arranged in each through hole in a sliding fit mode, round holes are arranged on the compaction connecting plate, a vibration motor is uniformly arranged on the upper end surface of the compaction connecting plate, a vibration rod is arranged at the lower end of the vibration motor and penetrates through each round hole, a compaction mechanism is arranged on the right side surface of the compaction connecting plate, the quantity of the compaction mechanisms is two, the two compaction mechanisms are symmetrically arranged on the left side surface and the right side surface of the compaction connecting plate in a left-right symmetrical mode, each compaction mechanism comprises a limiting slide rod, slide grooves are symmetrically arranged on the right side surface of the compaction mounting rack in the front-back mode, limiting slide rods are arranged in the slide grooves in a sliding fit mode, a compaction rack is arranged on the rear side surface of each limiting slide rod, the left end, the middle part of the front end face of the descending fluted disc is provided with a round groove, the inner side wall of the round groove is uniformly provided with grooves along the circumferential direction, the front end face of the descending fluted disc is provided with a first adjusting fixed branched chain, the rear end face of the descending fluted disc is provided with a descending branched chain, the lower part of the descending branched chain is provided with an ascending branched chain, the front end of the ascending branched chain is provided with an ascending fluted disc, the diameter of the ascending fluted disc is smaller than that of the descending fluted disc, the front end face of the ascending fluted disc is provided with a second adjusting fixed branched chain, the descending branched chain and the ascending branched chain have the same structure, the descending branched chain comprises an adjusting rotating shaft, the descending fluted disc is connected with the front end of the adjusting rotating shaft through a bearing, the adjusting rotating shaft passes through a supporting plate through the bearing, the supporting plate is arranged on a motor base, the rear end, the first adjusting fixed branched chain and the second adjusting fixed branched chain have the same structure, the first adjusting fixed branched chain comprises a fixed cylinder, the front end surface of the descending fluted disc is provided with the fixed cylinder, the inner side wall of the fixed cylinder is uniformly provided with adjusting grooves along the circumferential direction, the grooves are communicated with the adjusting grooves and correspond to the grooves one by one, an adjusting slider is arranged in the adjusting grooves in a sliding fit manner, the right end of the adjusting slider is provided with an adjusting inner gear, the adjusting inner gear is internally engaged with an adjusting outer gear, the adjusting outer gear is arranged at the front end of an adjusting rotating shaft, the front end surface of the adjusting inner gear is provided with a connecting plate, the front end surface of the connecting plate is connected with the top end of an adjusting electric push rod, the bottom end of the adjusting electric push rod is arranged on the connecting rod, the connecting rod is arranged on the inner side wall of the fixed cylinder, during, the control motor drives the descending fluted disc to rotate through the adjusting rotating shaft, so that the compaction rack can be driven to move downwards, the compaction rack drives the vibration rod on the compaction connecting plate to be downwards vertically inserted into concrete, the vibration motor works to compact the concrete, after the concrete is compacted to a certain degree, the adjusting electric push rod in the second adjusting fixed branch chain stretches to enable the adjusting inner gear to be meshed with the adjusting outer gear, the adjusting electric push rod in the first adjusting fixed branch chain stretches to enable the adjusting inner gear to be separated from the adjusting outer gear, the control motor in the ascending branch chain drives the ascending fluted disc to rotate through the adjusting rotating shaft, so that the compaction rack can be driven to move upwards, so that the vibration rod can be pulled out of the concrete, and the ascending speed of the control motor driving the compaction rack is slower because the diameter of the ascending fluted disc is smaller than that of the descending fluted disc, so that the vibration rod in the concrete pouring process can be vertically inserted into the concrete, the vibrating rod needs to be fast when being inserted into the concrete, and needs to be slow when being pulled out of the concrete, so that the vibrating effect is good.
In addition, the invention also provides a concrete pouring and tapping process of the tapping system for concrete pouring, which comprises the following steps:
1. firstly, an adjusting electric push rod in a second adjusting fixed branched chain stretches to separate an adjusting inner gear from an adjusting outer gear, a control motor drives a descending fluted disc to rotate through an adjusting rotating shaft, so that a compaction rack can be driven to move downwards, the compaction rack drives a vibration rod on a compaction connecting plate to be vertically inserted into concrete downwards, and the vibration motor works to compact the concrete;
2. then after the concrete is compacted to a certain degree, the adjusting electric push rod in the second adjusting fixed branched chain stretches to enable the adjusting inner gear to be meshed with the adjusting outer gear, the adjusting electric push rod in the first adjusting fixed branched chain stretches to enable the adjusting inner gear to be separated from the adjusting outer gear, and the control motor in the ascending branched chain drives the ascending fluted disc to rotate through the adjusting rotating shaft, so that the compacting rack can be driven to move upwards, and the vibrating rod can be pulled out of the concrete;
3. and finally, moving the compactor forwards, and enabling the compaction motor in the compaction box to work, so that the lower end surface of the compaction box can compact the concrete again.
The invention has the beneficial effects that:
the automatic vibrating compaction device can solve the problems that the vibrating rod is not vertical when being inserted into concrete in the concrete pouring process, is inserted too slowly, is pulled out too fast, has poor vibrating compaction effect, is low in working efficiency and the like, can realize the automatic vibrating compaction function of the concrete, and has the advantages of simple process, meeting the process requirements in the vibrating compaction process, good vibrating compaction effect and high working efficiency.
The invention is provided with a descending branch chain which can meet the requirement that the vibration rod can be vertically and quickly inserted into concrete;
the vibrating rod is provided with the ascending branch chain, the diameter of the ascending fluted disc is smaller than that of the descending fluted disc, so that the vibrating rod can be slower in speed when the concrete is pulled out, no gap is left in the concrete, and the vibrating effect is better;
the first adjusting fixed branched chain and the second adjusting fixed branched chain are arranged, so that the connection relation between the ascending fluted disc and the descending fluted disc and the adjusting rotating shaft can be realized, and whether the ascending fluted disc or the descending fluted disc is in bearing connection or in gear engagement with the adjusting rotating shaft can be selected according to the working requirement.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a second perspective view of the present invention (except for the tap motor);
FIG. 3 is a schematic perspective view of the tapping apparatus of the present invention (except for tapping connecting plate, vibrating motor and vibrating rod);
FIG. 4 is a schematic plan view of the tap mounting bracket, tap mechanism, lifting branch chain, lifting toothed disc and second adjusting fixed branch chain of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4;
fig. 6 is a schematic perspective view of the descending fluted disc and the first adjusting fixed branch chain of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As shown in fig. 1 to 6, a concrete pouring tap system includes a tap box 1, a tap motor 2, and a tap device 3, wherein the tap motor 2 is installed inside the tap box 1, and the tap device 3 is installed on the front end surface of the tap box 1.
The compaction device 3 comprises a compaction mounting frame 31, through holes are arranged on the left side surface and the right side surface of the compaction mounting frame 31, a compaction connecting plate 32 is arranged in each through hole in a sliding fit mode, round holes are arranged on the compaction connecting plate 32, a vibration motor 33 is uniformly arranged on the upper end surface of the compaction connecting plate 32, a vibration rod 34 is arranged at the lower end of the vibration motor 33, the vibration rod 34 penetrates through each round hole, a compaction mechanism 35 is arranged on the right side surface of the compaction connecting plate 32, the number of the compaction mechanisms 35 is two, the two compaction mechanisms 35 are symmetrically arranged on the left side surface and the right side surface of the compaction connecting plate 32 in a left-right mode, each compaction mechanism 35 comprises a limit slide bar 351, sliding grooves are symmetrically arranged on the front side surface and the back side surface of the compaction mounting frame 31 in a front-back mode, a limit slide bar 351 is arranged in each sliding fit mode in each sliding groove, a compaction rack 352 is, the right end of the tap rack 352 is engaged with a descending fluted disc 353, a round groove is arranged in the middle of the front end face of the descending fluted disc 353, grooves are uniformly arranged on the inner side wall of the round groove along the circumferential direction of the round groove, a first adjusting fixed branched chain 36 is arranged on the front end face of the descending fluted disc 353, a descending branched chain 37 is arranged on the rear end face of the descending fluted disc 353, an ascending branched chain 38 is arranged below the descending branched chain 37, an ascending fluted disc 39 is arranged at the front end of the ascending branched chain 38, the diameter of the ascending fluted disc 39 is smaller than that of the descending fluted disc 353, a second adjusting fixed branched chain 310 is arranged on the front end face of the ascending fluted disc 39, the descending branched chain 37 and the ascending branched chain 38 have the same structure, the descending branched chain 37 comprises an adjusting rotating shaft 371, the descending fluted disc 353 is connected with the front end of the adjusting rotating shaft 371 through a bearing, the adjusting rotating shaft 371 passes through, the control motor 374 is installed on the motor base 373 through a motor frame, the motor base 373 is installed on the right end face of the tap installation frame 31, the first adjusting fixed branch chain 36 and the second adjusting fixed branch chain 310 are identical in structure, the first adjusting fixed branch chain 36 comprises a fixed cylinder 361, the fixed cylinder 361 is installed on the front end face of the descending fluted disc 353, adjusting grooves are evenly arranged on the inner side wall of the fixed cylinder 361 along the circumferential direction of the fixed cylinder 361, the grooves are communicated with the adjusting grooves, the adjusting grooves correspond to the grooves one by one, an adjusting slide block 362 is installed in the adjusting grooves in a sliding fit mode, an adjusting inner gear 363 is installed at the right end of the adjusting slide block 362, an adjusting outer gear 364 is meshed in the adjusting inner gear 363, the adjusting outer gear 364 is installed at the front end of the adjusting rotating shaft 371, a connecting plate 365 is installed on the front end face of the adjusting 363, the bottom end of the adjusting electric push rod 366 is arranged on the connecting rod 367, the connecting rod 367 is arranged on the inner side wall of the fixed cylinder 361, when the adjusting electric push rod 366 in the second adjusting fixed branch chain 310 stretches and retracts to separate the adjusting inner gear 363 from the adjusting outer gear 364 during working, the control motor 374 drives the descending fluted disc 353 to rotate through the adjusting rotating shaft 371, so that the compaction rack 352 can be driven to move downwards, the compaction rack 352 drives the vibration rod 34 on the compaction connecting plate 36532 to be vertically inserted into concrete downwards, the vibration motor 33 works to compact the concrete, after the concrete is compacted to a certain degree, the adjusting electric push rod 366 in the second adjusting fixed branch chain 310 stretches and retracts to mesh the adjusting inner gear 363 with the adjusting outer gear 364, the adjusting electric push rod 366 in the first adjusting fixed branch chain 36 stretches and retracts to separate the adjusting inner gear 363 from the adjusting outer gear 364, and the control motor 374 in the ascending branch chain 38 drives the ascending fluted disc 39 to rotate through the adjusting rotating shaft, the vibrating rod 352 can be driven to move upwards, so that the vibrating rod 34 can be pulled out of the concrete, and the diameter of the ascending fluted disc 39 is smaller than that of the descending fluted disc 353, so that the speed of the control motor 374 is lower when the vibrating rod 352 is driven to ascend, the vibrating rod 34 in the concrete pouring process can be vertically inserted into the concrete, the speed of the vibrating rod 34 inserted into the concrete is higher, the speed of the vibrating rod 34 pulled out of the concrete is lower, and the vibrating effect is good.
In addition, the invention also provides a concrete pouring and tapping process of the tapping system for concrete pouring, which comprises the following steps:
1. firstly, an adjusting electric push rod 366 in the second adjusting fixed branched chain 310 stretches to separate an adjusting inner gear 363 from an adjusting outer gear 364, a control motor 374 drives a descending fluted disc 353 to rotate through an adjusting rotating shaft 371, so that a tap rack 352 can be driven to move downwards, the tap rack 352 drives a vibrating rod 34 on a tap connecting plate 36532 to be vertically inserted into concrete downwards, and a vibrating motor 33 works to tap the concrete;
2. then after the concrete is compacted to a certain degree, the adjusting electric push rod 366 in the second adjusting fixed branched chain 310 stretches to enable the adjusting inner gear 363 to be meshed with the adjusting outer gear 364, the adjusting electric push rod 366 in the first adjusting fixed branched chain 36 stretches to enable the adjusting inner gear 363 to be separated from the adjusting outer gear 364, and the control motor 374 in the ascending branched chain 38 drives the ascending fluted disc 39 to rotate through the adjusting rotating shaft 371, so that the compacting rack 352 can be driven to move upwards, and the vibrating rod 34 can be pulled out of the concrete;
3. and finally, the vibrating compactor is moved forwards, and the vibrating compactor 2 in the vibrating compactor 1 works to enable the lower end face of the vibrating compactor 1 to compact the concrete again.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a concrete placement is with plain bumper system, includes plain bumper (1), plain bumper motor (2) and plain bumper device (3), its characterized in that: a compaction motor (2) is arranged in the compaction box (1), and a compaction device (3) is arranged on the front end face of the compaction box (1); wherein:
the compaction device (3) comprises a compaction mounting frame (31), through holes are formed in the left side surface and the right side surface of the compaction mounting frame (31), a compaction connecting plate (32) is installed in the through holes in a sliding fit mode, round holes are formed in the compaction connecting plate (32), a vibration motor (33) is evenly installed on the upper end surface of the compaction connecting plate (32), a vibration rod (34) is installed at the lower end of the vibration motor (33), the vibration rod (34) penetrates through the round holes, compaction mechanisms (35) are installed on the right side surface of the compaction connecting plate (32), the number of the compaction mechanisms (35) is two, and the two compaction mechanisms (35) are symmetrically arranged on the left side surface and the right side surface of the compaction connecting plate (32);
the jolt ramming mechanism (35) comprises a limiting slide bar (351), sliding grooves are symmetrically formed in the right side face of the jolt ramming mounting frame (31) in the front-back direction, the limiting slide bar (351) is mounted in the sliding grooves in a sliding fit mode, a jolt ramming rack (352) is mounted on the rear side face of the limiting slide bar (351), the left end face of the jolt ramming rack (352) is connected with the right end face of the jolt ramming connecting plate (32), a descending fluted disc (353) is meshed with the right end of the jolt ramming rack (352), a circular groove is formed in the middle of the front end face of the descending fluted disc (353), grooves are uniformly formed in the inner side wall of the circular groove along the circumferential direction of the circular groove, a first adjusting fixed branched chain (36) is mounted on the front end face of the descending fluted disc (353), a descending branched chain (37) is mounted on the rear end face of the descending fluted disc, a second adjusting fixed branched chain (310) is arranged on the front end face of the ascending fluted disc (39); the diameter of the ascending fluted disc (39) is smaller than that of the descending fluted disc (353).
2. A concrete placement tapping system as recited in claim 1 wherein: descending branch chain (37) and the structure that rises branch chain (38) are the same, descending branch chain (37) are including adjusting pivot (371), descending fluted disc (353) are connected with the front end of adjusting pivot (371) through the bearing, it passes backup pad (372) through the bearing to adjust pivot (371), backup pad (372) are installed on motor cabinet (373), the rear end of adjusting pivot (371) is connected with the output shaft of control motor (374) through the shaft coupling, control motor (374) are installed on motor cabinet (373) through the motor frame, motor cabinet (373) are installed on the right-hand member face of plain bumper mounting bracket (31).
3. A concrete placement tapping system as recited in claim 1 wherein: the first adjusting fixed branch chain (36) and the second adjusting fixed branch chain (310) are identical in structure, the first adjusting fixed branch chain (36) comprises a fixed cylinder (361), the front end face of a descending fluted disc (353) is provided with the fixed cylinder (361), the inner side wall of the fixed cylinder (361) is uniformly provided with an adjusting groove along the circumferential direction of the fixed cylinder, an adjusting slider (362) is arranged in the adjusting groove in a sliding fit mode, an adjusting inner gear (363) is arranged at the right end of the adjusting slider (362), an adjusting outer gear (364) is meshed with the adjusting inner gear (363), the adjusting outer gear (364) is arranged at the front end of an adjusting rotating shaft (371), a connecting plate (365) is arranged on the front end face of the adjusting inner gear (363), the front end face of the connecting plate (365) is connected with the top end of an adjusting electric push rod (366), and the bottom end of the adjusting electric push, the connecting rod (367) is installed on the inner side wall of the fixed cylinder (361).
4. A concrete placement tapping system as recited in claim 1 wherein: the groove is communicated with the adjusting groove, and the adjusting groove corresponds to the groove one to one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811037323.2A CN108930410B (en) | 2018-09-06 | 2018-09-06 | Tap system for concrete pouring and concrete pouring tap process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811037323.2A CN108930410B (en) | 2018-09-06 | 2018-09-06 | Tap system for concrete pouring and concrete pouring tap process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108930410A CN108930410A (en) | 2018-12-04 |
| CN108930410B true CN108930410B (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811037323.2A Active CN108930410B (en) | 2018-09-06 | 2018-09-06 | Tap system for concrete pouring and concrete pouring tap process |
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| Country | Link |
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| CN (1) | CN108930410B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110682405B (en) * | 2019-10-18 | 2020-10-30 | 黑龙江省铁投预制构件有限公司 | Building concrete pouring jolter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266582Y (en) * | 1995-04-14 | 1997-11-05 | 闵在镐 | Gear rack type elevator |
| CN101818804A (en) * | 2010-05-06 | 2010-09-01 | 向永川 | Speed changer |
| CN106088614A (en) * | 2016-08-03 | 2016-11-09 | 中天建设集团有限公司天津分公司 | A kind of concrete multifunction vibrates machinery and construction method |
| BR102013028919B1 (en) * | 2013-11-11 | 2017-08-08 | Aparecido Peres Flávio | AUTOMATIC CANCELING MECHANISM WITH MOBILE DRIVE AND MECHANICAL ADJUSTMENT OF BARRIER SPEED |
| CN207017660U (en) * | 2017-05-18 | 2018-02-16 | 中国航天建设集团有限公司 | Spiral vibrator and the conveying rod that vibrates |
-
2018
- 2018-09-06 CN CN201811037323.2A patent/CN108930410B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266582Y (en) * | 1995-04-14 | 1997-11-05 | 闵在镐 | Gear rack type elevator |
| CN101818804A (en) * | 2010-05-06 | 2010-09-01 | 向永川 | Speed changer |
| BR102013028919B1 (en) * | 2013-11-11 | 2017-08-08 | Aparecido Peres Flávio | AUTOMATIC CANCELING MECHANISM WITH MOBILE DRIVE AND MECHANICAL ADJUSTMENT OF BARRIER SPEED |
| CN106088614A (en) * | 2016-08-03 | 2016-11-09 | 中天建设集团有限公司天津分公司 | A kind of concrete multifunction vibrates machinery and construction method |
| CN207017660U (en) * | 2017-05-18 | 2018-02-16 | 中国航天建设集团有限公司 | Spiral vibrator and the conveying rod that vibrates |
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| CN108930410A (en) | 2018-12-04 |
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Effective date of registration: 20200628 Address after: 430000, No. four, 1 Xinqiao Road, Silver Lake Street, Dongxihu District, Hubei, Wuhan Applicant after: POWERCHINA HUBEI ENGINEERING Co.,Ltd. Address before: 242100 Daxing 39-1, Hengzha Village, Happy Township, Langxi County, Xuancheng City, Anhui Province Applicant before: Cao Yudi |
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