CN108867613B - Ramming machine capable of controlling steering - Google Patents
Ramming machine capable of controlling steering Download PDFInfo
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- CN108867613B CN108867613B CN201810786899.2A CN201810786899A CN108867613B CN 108867613 B CN108867613 B CN 108867613B CN 201810786899 A CN201810786899 A CN 201810786899A CN 108867613 B CN108867613 B CN 108867613B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Road Paving Machines (AREA)
Abstract
The invention relates to the field of tamping machines, in particular to a tamping machine capable of controlling steering, which comprises a chassis, a rolling device, a steering device, a balancing device and a tamping device, wherein the rolling device comprises a rolling assembly, the steering device comprises a supporting assembly and a steering assembly, the balancing device comprises a balancing assembly, and the tamping device comprises a bearing assembly, a driving assembly, a driven assembly and a tamping assembly. The ground to be tamped is tamped, the direction is easy to control, and the tamping is very convenient.
Description
Technical Field
The invention relates to the field of ramming machines, in particular to a ramming machine capable of controlling steering.
Background
Before concrete pouring is carried out on the ground in the building construction link, the ground needs to be tamped so as to improve the compaction degree of a ground laying cushion layer and prevent the occurrence of phenomena such as surface subsidence after the concrete pouring is finished. Most of the existing ground tamping devices adopt compression rollers for rolling compaction, and the mode consumes time, has low tamping efficiency and poor compacting effect; or the rammer compactor is adopted, the device has a complex structure and a heavy volume, and is difficult to steer and inconvenient to operate in narrow space operation.
Chinese patent publication No.: CN 108086288A; the publication date is as follows: 2018.05.29 discloses a ground ramming machine for building, which comprises a base, a rotating shaft, a hydraulic cylinder, an oil cylinder, a vertical support frame, an L-shaped connecting rod and a ramming block; the rotating shaft is of a disc-shaped structure and is arranged on the base, the rotating shaft is rotatably connected with the base, the hydraulic cylinder and the oil cylinder are both fixedly arranged on the rotating shaft, the oil cylinder is communicated with the hydraulic cylinder, and the rotating shaft is also fixedly provided with a vertical support frame; l shape connecting rod includes vertical pole and horizon bar, vertical pole and horizon bar integrated into one piece, the fixed hydraulic pressure post of holding on the pneumatic cylinder that supports in the horizon bar middle part, slider sliding connection is passed through on vertical support frame to the tip of horizon bar, be provided with on the vertical support frame with slider complex vertical slide rail, L shape connecting rod relative and vertical support frame up-and-down motion, the bottom and the rammer piece welded fastening of vertical pole, this rammer lacks buffer, cause certain harm to machine itself at the in-process of ramming easily, reduce the life of machine.
Disclosure of Invention
The invention aims to provide a ramming machine capable of controlling steering, aiming at overcoming the defects of the prior art.
In order to solve the above problems, the present invention provides the following technical solutions: a tamping machine capable of controlling steering comprises a chassis, a rolling device arranged at the bottom of the chassis, a steering device arranged at the top of the chassis, a balancing device arranged at the top of the chassis and a tamping device arranged at the top of the chassis, wherein the rolling device comprises a rolling assembly, the rolling assembly is rotatably arranged at the bottom of the chassis, the steering device comprises a supporting assembly and a steering assembly, the supporting assembly is fixedly arranged at the top of the chassis, the steering assembly is rotatably arranged on the supporting assembly and is matched with the chassis in an inserting manner, the balancing device comprises a balancing assembly, the balancing assembly is fixedly arranged at the top of the chassis, the tamping device comprises a bearing assembly, a driving assembly, a driven assembly and a tamping assembly, the bearing assembly is fixedly arranged at the top of the chassis, the driving assembly is fixedly arranged at the top of the bearing assembly, the driven assembly is rotatably arranged on the bearing assembly and is in transmission connection with the driving assembly, the tamping assembly is slidably inserted and arranged on the chassis and is slidably inserted and arranged on the bearing assembly, and the top of the tamping assembly is hinged with the driven assembly;
the bearing assembly comprises a first bearing plate, a second bearing plate and two bearing columns, the first bearing plate is fixedly arranged at the top of the chassis, the two bearing columns are vertically and fixedly arranged at the top of the first bearing plate, and the second bearing plate is fixedly arranged at the tops of the two bearing columns;
the driving assembly comprises a motor base, a driving motor, a driving gear and a first chain, the motor base is fixedly arranged at the top of the second bearing plate, the driving motor is fixedly arranged in the motor base, the non-rotatable sleeve of the driving gear is arranged at the output end of the driving motor, one end of the first chain is arranged on the driving gear in a sleeved mode, and the other end of the first chain is arranged on the driven assembly in a sleeved mode.
Further, driven subassembly includes driven gear, driven shaft and pulling rod, the rotatable setting of driven shaft is in the bottom of second loading board, the nonrotatable cover of driven gear is established in the one end of driven shaft, driven gear sets up and is connected with drive gear transmission in first chain, driven shaft central point puts and is equipped with two cams, two the cam is through a connecting rod fixed connection who is not coaxial with the driven shaft, the rotatable cover of pulling rod one end is established on the connecting rod, and the other end is articulated with the tamping subassembly.
Furthermore, the balance assembly comprises two balance blocks, and the two balance blocks are fixed and correspondingly arranged at the top of the chassis.
Furthermore, the rolling assembly comprises two rollers, two rolling seats are further arranged at the bottom of the chassis, and each roller is rotatably arranged in one rolling seat.
Has the advantages that: according to the tamping machine capable of controlling steering, when the ground is required to be tamped, the chassis is placed at the position to be tamped, the corresponding ground can be tamped through the steering assembly and the rolling assembly, the supporting assembly is arranged to facilitate the steering of the steering assembly, the balance assembly is arranged to maintain the balance of the chassis, the bearing assembly is used for bearing the driving assembly, the driving assembly is opened, the driving assembly drives the driven assembly to move and further drives the tamping assembly to perform ground tamping, the ground to be tamped is tamped, the direction is easy to control, and the tamping machine is quite convenient.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a side view of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic illustration of a three-dimensional disassembled structure of the compaction apparatus of the present invention;
FIG. 6 is a schematic partially disassembled structure of the compaction apparatus of the present invention;
FIG. 7 is an enlarged schematic view at B of FIG. 6;
FIG. 8 is a first schematic perspective view of the tamper assembly of the present invention;
FIG. 9 is a schematic perspective view of the tamper assembly of the present invention;
FIG. 10 is a perspective view of the steering assembly of the present invention;
FIG. 11 is a schematic perspective view of the rolling device and the balancing device according to the present invention;
description of reference numerals: a chassis 1, a rolling seat 1a, a rolling device 2, a rolling component 2a, a roller 2b, a steering device 3, a support component 3a, a steering component 3b, a support frame 3c, a steering rod 3d, a steering wheel 3e, a steering wheel 3f, a fixed block 3g, a steering seat 3h, a balancing device 4, a balancing component 4a, a balancing block 4b, a tamping device 5, a bearing component 5a, a driving component 5b, a driven component 5c, a tamping component 5d, a first bearing plate 5e, a second bearing plate 5f, a bearing column 5g, a motor seat 5h, a driving motor 5i, a driving gear 5j, a first chain 5k, a driven gear 5m, a driven shaft 5n, a pulling rod 5p, a cam 5q, a connecting rod 5r, a tamping block 5s, a plugging rod 5t, a buffer spring 5u, a first tamping plate 5v, a buffer component 5w, a second tamping plate 5x, a buffer post 5y, a first spring 5z, and a second spring 5z 1.
Detailed Description
The following detailed description of specific embodiments of the present invention is made with reference to the accompanying drawings and examples:
referring to fig. 1 to 11, the ramming machine capable of controlling steering comprises a chassis 1, a rolling device 2 arranged at the bottom of the chassis 1, a steering device 3 arranged at the top of the chassis 1, a balancing device 4 arranged at the top of the chassis 1 and a ramming device 5 arranged at the top of the chassis 1.
The rolling device 2 comprises a rolling component 2a, the rolling component 2a is rotatably arranged at the bottom of the chassis 1, the steering device 3 comprises a supporting component 3a and a steering component 3b, the supporting component 3a is fixedly arranged at the top of the chassis 1, the steering component 3b is rotatably arranged on the supporting component 3a and is matched with the chassis 1 in an inserting manner, the balancing device 4 comprises a balancing component 4a, the balancing component 4a is fixedly arranged at the top of the chassis 1, the tamping device 5 comprises a bearing component 5a, a driving component 5b, a driven component 5c and a tamping component 5d, the bearing component 5a is fixedly arranged at the top of the chassis 1, the driving component 5b is fixedly arranged at the top of the bearing component 5a, and the driven component 5c is rotatably arranged on the bearing component 5a and is in transmission connection with the driving component 5b, tamp subassembly 5d slidable grafting setting on chassis 1 and slidable grafting setting on bearing component 5a, tamp subassembly 5 d's top and driven subassembly 5c are articulated, when needs tamp ground in real time, place chassis 1 in the position that needs tamp, can tamp corresponding ground through turning to subassembly 3b and rolling subassembly 2a, the setting of supporting component 3a is convenient for turn to the better turning to of subassembly 3b, the setting of balanced subassembly 4a has kept the equilibrium of chassis 1, bearing component 5a is used for bearing drive assembly 5b, open drive assembly 5b, drive assembly 5b drives driven subassembly 5c and moves and further drives tamp subassembly 5d and carry out the motion to the ground tamp, tamp the ground that needs the tamping, and the easy control direction, therefore, the operation is very convenient.
The bearing assembly 5a comprises a first bearing plate 5e, a second bearing plate 5f and two bearing columns 5g, wherein the first bearing plate 5e is fixedly arranged at the top of the chassis 1, the two bearing columns 5g are vertically and fixedly arranged at the top of the first bearing plate 5e, the second bearing plate 5f is fixedly arranged at the top of the two bearing columns 5g, the first bearing plate 5e is fixed on the chassis 1, and the two bearing columns 5g are fixed between the first bearing plate 5e and the second bearing plate 5 f.
The driven assembly 5c comprises a driven gear 5m, a driven shaft 5n and a pulling rod 5p, the driven shaft 5n is rotatably arranged at the bottom of the second bearing plate 5f, the driven gear 5m is sleeved on one end of the driven shaft 5n in a non-rotatable manner, the driven gear 5m is arranged in the first chain 5k and is in transmission connection with the driving gear 5j, two cams 5q are arranged at the central position of the driven shaft 5n, the two cams 5q are fixedly connected through a connecting rod 5r which is not coaxial with the driven shaft 5n, the rotatable cover of pulling rod 5p one end is established on connecting rod 5r, and the other end is articulated with ramming subassembly 5d, and driven gear 5m is rotatory will drive driven shaft 5n and rotate, and two cams 5q on the driven shaft 5n also follow the rotation and drive connecting rod 5r and be circular motion, and pulling rod 5p can rotate on connecting rod 5r and be the up-and-down motion along with connecting rod 5 r.
The tamping component 5d comprises a tamping block 5s, an inserting rod 5t, a buffer spring 5u, a first tamping plate 5v and a buffer part 5w, the inserting rod 5t is inserted on the chassis 1 and is connected with the chassis 1 in a sliding way, the tamping block 5s is fixedly arranged at the bottom of the inserting rod 5t, the first tamping plate 5v is fixedly arranged at the top of the inserting rod 5t and is connected with two bearing columns 5g in a sliding way, the buffer spring 5u is sleeved on the inserting rod 5t and is positioned between the first tamping plate 5v and the chassis 1, the buffer part 5w is inserted on the first tamping plate 5v, the buffer part 5w is driven to move up and down by the pulling rod 5p in the up-down movement process, the buffer part 5w drives the first tamping plate 5v to move up and down to drive the inserting rod 5t and the tamping block 5s to move up and down to tamp the ground, the damping spring 5u is provided between the chassis 1 and the first tamper plate 5v for the purpose of pneumatic damping.
The buffer component 5w comprises a second tamping plate 5x, two buffer columns 5y, two first springs 5z and two second springs 5z1, the second tamping plate 5x is slidably sleeved on two bearing columns 5g and hinged with a pulling rod 5p, each first spring 5z is sleeved on one bearing column 5g and positioned between a first tamping plate 5v and a second tamping plate 5x, one end of each buffer column 5y is fixedly arranged on the second tamping plate 5x, the other end of each buffer column 5y is slidably inserted and arranged on the first tamping plate 5v, each second spring 5z1 is sleeved on one buffer column 5y and positioned at the bottom of the first tamping plate 5v, the pulling rod 5p is hinged with the second tamping plate 5x and can drive the second tamping plate 5x to move up and down, the two buffer columns 5y are inserted and arranged on the first tamping plate 5v and buffer through two second springs 5z1, so that the first tamper plate 5v is not damaged in the process of the second tamper plate 5x vibrating up and down, and the two first springs 5z also play a role in buffering the vibration of the first tamper plate 5v and the second tamper plate 5 x.
The supporting component 3a comprises a supporting frame 3c, the supporting frame 3c is fixedly arranged at the top of the chassis 1, and the supporting frame 3c is used for supporting the steering component 3 b.
The steering assembly 3b comprises a steering rod 3d, a steering wheel 3e and a steering wheel 3f, the steering rod 3d is rotatably inserted on the chassis 1 and rotatably inserted on the supporting frame 3c, the top of the steering rod 3d is provided with a fixed block 3g for fixing a steering wheel 3e, the bottom of the steering rod 3d is provided with a steering seat 3h for fixing a steering wheel 3f, the steering wheel 3e is inserted on the fixed block 3g and is connected with the steering rod 3d in a transmission way, the steering wheel 3f is rotatably arranged in the steering seat 3h, when the steering operation is required, accessible rotatory steering wheel 3e, steering wheel 3e will drive steering column 3d and rotate, and steering column 3d further drives again and turns to seat 3h and rotates, and directive wheel 3f rolls in turning to seat 3h, can turn to the motion along with turning to of seat 3 h.
The balance assembly 4a comprises two balance blocks 4b, the balance blocks 4b are fixed and correspondingly arranged at the top of the chassis 1, on one hand, the weight of the chassis 1 is increased, the stability is improved, and on the other hand, the balance in the tamping process is kept.
The rolling assembly 2a comprises two rollers 2b, the bottom of the chassis 1 is further provided with two rolling seats 1a, each roller 2b is rotatably arranged in one rolling seat 1a, and the rollers 2b can roll along with the motion of the chassis 1.
The working principle is as follows: when the ground needs to be tamped, the chassis 1 is placed at a position needing to be tamped, the first bearing plate 5e is fixed on the chassis 1, the two bearing columns 5g are fixed between the first bearing plate 5e and the second bearing plate 5f, the driving motor 5i is started, the driving motor 5i rotates to drive the driving gear 5j to rotate, the driving gear 5j further drives the first chain 5k to rotate, the first chain 5k rotates to drive the driven component 5c to move, the driven gear 5m rotates to drive the driven shaft 5n to rotate, the two cams 5q on the driven shaft 5n also rotate to drive the connecting rod 5r to do circular motion, the pulling rod 5p can rotate on the connecting rod 5r and move up and down along with the connecting rod 5r, the pulling rod 5p also drives the buffer component 5w to move up and down in the up and down motion process, the buffer component 5w drives the first tamping plate 5v to move up and down to drive the inserting rod 5t and the tamping block 5f s moves up and down to tamp the ground, the buffer spring 5u is arranged between the chassis 1 and the first tamping plate 5v to perform pneumatic buffering, the pulling rod 5p is hinged with the second tamping plate 5x to drive the second tamping plate 5x to move up and down, the two buffer columns 5y are inserted and arranged on the first tamping plate 5v and buffered by the two second springs 5z1, so that the first tamping plate 5v is not damaged in the process of vibrating the second tamping plate 5x up and down, the two first springs 5z also play a role in buffering the vibration of the first tamping plate 5v and the second tamping plate 5x, the support frame 3c is used for supporting the steering component 3b, when steering operation is needed, the steering wheel 3e can be rotated to drive the steering rod 3d to rotate, the steering rod 3d further drives the steering seat 3h to rotate, and the steering wheel 3f rolls in the steering seat 3h, can turn to the motion along with turning to of seat 3h, the setting up of balancing piece 4b plays on the one hand and increases chassis 1 weight, promotes stability, and on the other hand has kept the equilibrium among the tamping process, and gyro wheel 2b can roll along with the motion of chassis 1, can tamp at the removal in-process to can control the direction of tamping work.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (4)
1. The utility model provides a can control ramming machine that turns to which characterized in that: the steering device comprises a chassis (1), a rolling device (2) arranged at the bottom of the chassis (1), a steering device (3) arranged at the top of the chassis (1), a balancing device (4) arranged at the top of the chassis (1) and a tamping device (5) arranged at the top of the chassis (1), wherein the rolling device (2) comprises a rolling component (2a), the rolling component (2a) is rotatably arranged at the bottom of the chassis (1), the steering device (3) comprises a supporting component (3a) and a steering component (3b), the supporting component (3a) is fixedly arranged at the top of the chassis (1), and the steering component (3b) is rotatably arranged on the supporting component (3a) and is in plug-in fit with the chassis (1);
the steering assembly (3b) comprises a steering rod (3d), a steering wheel (3e) and a steering wheel (3f), the steering rod (3d) is rotatably inserted into the chassis (1) and rotatably inserted into the support frame (3c), a fixing block (3g) for fixing the steering wheel (3e) is arranged at the top of the steering rod (3d), a steering seat (3h) for fixing the steering wheel (3f) is arranged at the bottom of the steering rod (3d), the steering wheel (3e) is inserted into the fixing block (3g) and is in transmission connection with the steering rod (3d), and the steering wheel (3f) is rotatably arranged in the steering seat (3 h);
the balancing device (4) comprises a balancing component (4a), and the balancing component (4a) is fixedly arranged on the top of the chassis (1); the tamping device (5) comprises a bearing component (5a), a driving component (5b), a driven component (5c) and a tamping component (5d), wherein the bearing component (5a) is fixedly arranged at the top of the chassis (1), the driving component (5b) is fixedly arranged at the top of the bearing component (5a), the driven component (5c) is rotatably arranged on the bearing component (5a) and is in transmission connection with the driving component (5b), the tamping component (5d) is slidably inserted and arranged on the chassis (1) and is slidably inserted and arranged on the bearing component (5a), and the top of the tamping component (5d) is hinged to the driven component (5 c);
the bearing assembly (5a) comprises a first bearing plate (5e), a second bearing plate (5f) and two bearing columns (5g), the first bearing plate (5e) is fixedly arranged at the top of the chassis (1), the two bearing columns (5g) are vertically and fixedly arranged at the top of the first bearing plate (5e), and the second bearing plate (5f) is fixedly arranged at the tops of the two bearing columns (5 g);
drive assembly (5b) includes motor cabinet (5h), driving motor (5i), drive gear (5j) and first chain (5k), motor cabinet (5h) is fixed to be set up at the top of second loading board (5f), driving motor (5i) is fixed to be set up in motor cabinet (5h), drive gear (5j) not rotatable cover is established on the output of driving motor (5i), a pot head of first chain (5k) is established on drive gear (5j), and another pot head is established on driven subassembly (5 c).
2. A tamper with controlled steering according to claim 1, wherein: driven subassembly (5c) include driven gear (5m), driven shaft (5n) and pulling rod (5p), the rotatable bottom that sets up at second loading board (5f) of driven shaft (5n), the one end at driven shaft (5n) is established to driven gear (5m) nonrotatable cover, driven gear (5m) set up in first chain (5k) and are connected with drive gear (5j) transmission, driven shaft (5n) central point puts and is equipped with two cams (5q), two cam (5q) are through one with driven shaft (5n) not coaxial connecting rod (5r) fixed connection, the rotatable cover of pulling rod (5p) one end is established on connecting rod (5r), the other end is articulated with ramming real subassembly (5 d).
3. A tamper with controlled steering according to claim 1, wherein: the balance assembly (4a) comprises two balance blocks (4b), and the two balance blocks (4b) are fixed and correspondingly arranged on the top of the chassis (1).
4. A tamper with controlled steering according to claim 1, wherein: the rolling assembly (2a) comprises two rollers (2b), two rolling seats (1a) are further arranged at the bottom of the chassis (1), and each roller (2b) is rotatably arranged in one rolling seat (1 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786899.2A CN108867613B (en) | 2018-07-18 | 2018-07-18 | Ramming machine capable of controlling steering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786899.2A CN108867613B (en) | 2018-07-18 | 2018-07-18 | Ramming machine capable of controlling steering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108867613A CN108867613A (en) | 2018-11-23 |
| CN108867613B true CN108867613B (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810786899.2A Expired - Fee Related CN108867613B (en) | 2018-07-18 | 2018-07-18 | Ramming machine capable of controlling steering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108867613B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356143A (en) * | 2018-12-21 | 2019-02-19 | 南京工程学院 | Tamping unit is used in a kind of construction |
| CN111962495A (en) * | 2020-08-25 | 2020-11-20 | 柴喜全 | Ramming machine capable of controlling steering |
| CN111962496A (en) * | 2020-09-03 | 2020-11-20 | 王长南 | Ramming machine capable of controlling steering |
| CN112323764A (en) * | 2020-10-31 | 2021-02-05 | 梁禄灵 | Tamping device for building |
| CN112619755B (en) * | 2020-12-24 | 2022-04-15 | 东台市鑫富达机械有限公司 | A crushing apparatus for grain material handles |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19739742C2 (en) * | 1997-09-10 | 1999-10-21 | Wacker Werke Kg | Tool with mass balance on the crank mechanism |
| CN201627192U (en) * | 2009-10-22 | 2010-11-10 | 长葛市天润有色金属研究所 | Rammer with universal chassis |
| CN106049408A (en) * | 2016-07-29 | 2016-10-26 | 无锡乐华自动化科技有限公司 | Automatic ramming device |
| CN207047827U (en) * | 2017-08-09 | 2018-02-27 | 广东茂春建设集团有限公司 | A kind of portable ramming machine |
| CN207481653U (en) * | 2017-09-29 | 2018-06-12 | 上海领景智能科技有限公司 | A kind of vehicle with active balancing device |
| CN108086288A (en) * | 2017-12-25 | 2018-05-29 | 新昌县博杰机械有限公司 | A kind of ground ramming machine for building |
-
2018
- 2018-07-18 CN CN201810786899.2A patent/CN108867613B/en not_active Expired - Fee Related
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| CN108867613A (en) | 2018-11-23 |
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Effective date of registration: 20200512 Address after: 443100 8 group of Guo Jia Wan Village, new development avenue, Yiling District, Yichang, Hubei Applicant after: YICHANG CHENGDA CONSTRUCTION Co.,Ltd. Address before: 1001, room 4, unit 2, Julong garden, Wuhu Ning Road, Jinghu District, Anhui, Wuhu, 241001 Applicant before: Pistil |
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