CN109356610B - Slag discharging device and method for subway construction - Google Patents
Slag discharging device and method for subway construction Download PDFInfo
- Publication number
- CN109356610B CN109356610B CN201811498420.1A CN201811498420A CN109356610B CN 109356610 B CN109356610 B CN 109356610B CN 201811498420 A CN201811498420 A CN 201811498420A CN 109356610 B CN109356610 B CN 109356610B
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- slag
- storage box
- slag storage
- rod
- plate
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- 239000002893 slag Substances 0.000 title claims abstract description 100
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000007599 discharging Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003780 insertion Methods 0.000 claims description 21
- 230000037431 insertion Effects 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000010079 rubber tapping Methods 0.000 claims 4
- 239000013049 sediment Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a slag discharging device for subway construction and a method thereof, belonging to the technical field of subway construction, comprising a rectangular support plate fixedly arranged on the ground bottom surface, wherein four corners of the support plate are respectively provided with a vertical column vertically extending upwards to the upper part of the ground, the center of the support plate is rotatably provided with a screw rod, the top ends of the four vertical columns are provided with a top plate, the top plate is provided with a driving assembly for driving the screw rod to rotate, a moving plate with the same size as the support plate is connected between the four vertical columns in a sliding way, the center of the moving plate is provided with a threaded sleeve in threaded sleeve connection with the screw rod, slag storage boxes are detachably arranged on the moving plate and positioned at two sides of the threaded sleeve, and the bottom of each slag storage box is provided with a universal wheel. Continuous lifting can be realized through mechanical lifting, and the efficiency of discharging the dregs is higher.
Description
Technical Field
The invention relates to the technical field of subway construction, in particular to a slag discharging device and a slag discharging method for subway construction.
Background
The subway is an important modern vehicle, and refers to an urban rail transit system which is mainly operated underground, namely the subway or the subway is called as the abbreviation; many such systems may be switched to ground or elevated sections of road in areas outside of urban centers in order to fit the building environment and take into account construction and operating costs. The subway is an urban rail transit system which covers various underground and overground roadways of urban areas, is special in right of way, high in density and high in traffic volume.
Can produce a large amount of dregs in the underground construction process of subway, need discharge dregs in order to reserve enough space so that the construction, because the subway construction just receives the restriction in space underground, can only shovel the heap sediment incasement with accumulational dregs through the workman underground, arrange the workman again and put the underground with the hook rope subaerial, underground workman piles rope department with the heap sediment case, and with the heap sediment case hook on the hook rope, at this moment let subaerial workman promote the heap sediment case again and go up, but so can make the artifical amount of labour huge, and then influence the discharge efficiency of dregs.
Disclosure of Invention
The invention aims to provide a slag discharging device for subway construction, which has the advantage of reducing the labor capacity of workers.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a slag discharging device of subway construction, is the backup pad of rectangle including the fixed shape that sets up on the ground bottom surface, four edges of backup pad are provided with the vertical stand that upwards extends to the ground top respectively, the center of backup pad is rotated and is provided with the lead screw, the lead screw vertical upwards extend and length with the length of stand is the same, four the top of stand is provided with the roof, be provided with on the roof and be used for driving lead screw pivoted drive assembly, four sliding connection has the movable plate the same with backup pad size between the stand, the center of movable plate be provided with the threaded sleeve that the lead screw thread cup jointed, it all can dismantle in the threaded sleeve both sides and be provided with the storage slag box to lie in on the movable plate, the bottom of storage slag box is provided with the.
According to the technical scheme, the slag storage box is detached from the movable plate, the slag storage box can be pushed randomly due to the arrangement of the universal wheels, the slag storage box is pushed to a slag piling position at the moment, muck is shoveled into the slag storage box by workers, the slag storage box is mounted on the movable plate again after the slag storage box is filled, then the driving assembly is started to enable the screw rod to start to rotate, and the movable plate does not rotate along with the screw rod due to the fact that the threaded sleeve on the movable plate is sleeved with the screw rod at the moment and is in sliding connection with the four vertical columns on the periphery, and moves along the length direction of the screw rod under the rotation of the screw rod, so that the movable plate can move in the vertical direction; when the movable plate drives the slag storage box to move to the ground, the slag storage box is detached from the movable plate, and then the slag in the slag storage box is poured. After the arrangement, when underground muck is cleaned, the muck storage box filled with muck is lifted without labor, so that the labor intensity of workers is reduced, continuous lifting can be realized through mechanical lifting relative to manual lifting, and the muck discharging efficiency is higher.
Further, all inlay on the face of backup pad and roof and be equipped with antifriction bearing, the both ends of lead screw pass two antifriction bearings and with antifriction bearing's inner circle interference fit.
Implement above-mentioned technical scheme, antifriction bearing's setting makes the upper and lower both ends of lead screw fix respectively on backup pad and roof for the lead screw can be fixed more stably, and the rotation also can be realized smoothly to the lead screw under the fixed circumstances.
Further, the driving assembly comprises a rotating motor arranged on the top plate, and an output shaft of the rotating motor is coaxially connected with the lead screw.
Implement above-mentioned technical scheme, start the rotation motor, the output shaft that rotates the motor this moment begins to rotate, because the output shaft coaxial coupling of lead screw and rotation motor, consequently the lead screw also can be along with rotating together to reach the comparatively convenient effect of drive lead screw rotation.
Furthermore, four corners of the moving plate are fixedly provided with sleeves, and the sleeves are slidably sleeved on the stand columns.
According to the technical scheme, after the sleeve of the moving plate is sleeved on the stand columns, when the screw rod rotates, the moving plate cannot rotate along with the screw rod, so that the moving plate can move smoothly along the length direction of the screw rod, and in the moving process, the sleeve can also slide on the stand columns, so that the effect that the moving plate can stably slide among the four stand columns is achieved.
Further, be provided with vertical pipe on the lateral wall of storage sediment case, vertical intraductal slip is provided with the inserted bar, set up on the movable plate and supply the inserted jack of inserted bar, be provided with on the vertical pipe and be used for fixing the mounting in vertical intraductal with the inserted bar.
Implement above-mentioned technical scheme, after aiming at the jack with the inserted bar on the sediment case, stir the inserted bar and make the inserted bar vertically lapse in vertical intraductal to make in the one end of inserted bar inserts in the jack, it is fixed with the inserted bar then with the mounting, make the inserted bar fix the position that is in the inserted jack all the time, can make the movable plate drive the sediment case and move the case and remove like this when, the sediment case is difficult for receiving the influence of universal wheel and slides on the movable plate.
Further, the fixing piece comprises a tightening bolt which is arranged on the pipe wall of the vertical pipe in a penetrating mode through threads, and one end, located in the vertical pipe, of the tightening bolt is abutted to the inserted rod.
Implement above-mentioned technical scheme, insert the jack with the one end of inserted bar back and make the tip of inserted bar and the diapire butt of jack, screw up the tight bolt that supports that is located on the vertical pipe lateral wall after that for support the tight bolt and be located vertical intraductal one end tightly with the inserted bar butt, thereby reach the comparatively convenient effect of fixed inserted bar.
Further, the inserted bar is the iron set, be provided with the magnet piece that adsorbs mutually with the inserted bar on the diapire of jack.
According to the technical scheme, the magnet block enables the insertion rod to be stably arranged in the insertion hole.
Furthermore, a hanging ring is arranged on the wall of the threaded sleeve, and a hook fastened with the hanging ring is arranged on the side wall of the slag storage box.
Implement above-mentioned technical scheme, hang the couple on the slag storage box on the link, can carry out the secondary to the slag storage box and fix for the slag storage box is more difficult for falling from the movable plate at the vertical in-process that removes.
Further, slopes are arranged on two sides of the moving plate.
By implementing the technical scheme, the slope is arranged to conveniently push the slag storage box to the moving plate.
The second object of the present invention is achieved by the following technical solutions:
a deslagging method for subway construction comprises the following steps:
pushing down a slag storage box from the slope of a movable plate to a slag stacking position, and shoveling slag into the slag storage box by workers to enable the slag storage box to be filled with slag;
secondly, pushing the movable plate up through the slope again by the slag storage box filled with the slag, adjusting the position of the slag storage box to enable the end part of the inserted link to be positioned right above the jack, vertically and downwards sliding the inserted link on the vertical pipe to enable the inserted link to be inserted into the jack, enabling the inserted link to be adsorbed with the magnet block at the moment, and finally screwing the abutting bolt to abut the inserted link in the vertical pipe;
step three, buckling a hook on the side wall of the slag storage box on a hanging ring;
and step four, starting the rotating motor to enable the screw rod to start to rotate, driving the movable plate to drive the slag storage box to ascend, closing the rotating motor when the movable plate ascends to the ground, taking down the hook on the slag storage box from the hanging ring, taking out the inserted link from the jack, and pushing the slag storage box out of the movable plate.
In conclusion, the invention has the following beneficial effects:
when the underground muck removing machine is used for removing underground muck, the muck storage box filled with muck is not required to be lifted up by manpower, so that the labor intensity of workers is reduced, continuous lifting can be realized by mechanical lifting compared with manual lifting, and the muck discharging efficiency can be higher.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an exploded schematic view of an embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is an enlarged view of a portion B in fig. 2.
Reference numerals: 1. a support plate; 11. a column; 12. a top plate; 13. rotating the motor; 2. A lead screw; 3. moving the plate; 31. a threaded sleeve; 311. hanging a ring; 32. a sleeve; 33. a slope; 34. a jack; 341. a magnet block; 4. a slag storage tank; 41. a universal wheel; 42. a vertical tube; 421. tightly abutting against the bolt; 43. inserting a rod; 44. hooking; 5. a rolling bearing.
Detailed Description
The technical solutions of the embodiments of the present invention will be described below with reference to the accompanying drawings.
Example one
As shown in fig. 1, a slag discharging device for subway construction, including fixed backup pad 1 that sets up the shape on the ground bottom surface for the rectangle, four edges of backup pad 1 are provided with vertical stand 11 that upwards extends to the ground top respectively, the center of backup pad 1 rotates and is provided with lead screw 2, lead screw 2 is vertical upwards to extend and length is the same with stand 11's length, the top of four stand 11 is provided with roof 12, all inlay on the face of backup pad 1 and roof 12 and be equipped with antifriction bearing 5, lead screw 2's both ends pass two antifriction bearing 5 and with antifriction bearing 5's inner circle interference fit, antifriction bearing 5's setting makes lead screw 2's upper and lower both ends fix respectively on backup pad 1 and roof 12, make lead screw 2 can fix more stably, and lead screw 2 also can realize the rotation smoothly under the fixed circumstances.
As shown in fig. 1, a driving assembly for driving the screw rod 2 to rotate is arranged on the top plate 12, the driving assembly is a rotating motor 13 arranged on the top plate 12, and an output shaft of the rotating motor 13 is coaxially connected with the screw rod 2; a moving plate 3 with the same size as the support plate 1 is connected between the four upright posts 11 in a sliding manner, namely, sleeves 32 are fixedly arranged at four corners of the moving plate 3, and the sleeves 32 are sleeved on the upright posts 11 in a sliding manner; the center of the movable plate 3 is provided with a threaded sleeve 31 in threaded sleeve connection with the lead screw 2, and slag storage boxes 4 are detachably arranged on the movable plate 3 and positioned on two sides of the threaded sleeve 31, namely two slag storage boxes 4 can be placed on one movable plate 3 at the same time, so that the slag conveying efficiency is higher; the bottom of the slag storage box 4 is provided with universal wheels 41, and the two sides of the moving plate 3 are provided with slopes 33.
Starting the rotating motor 13, wherein the output shaft of the rotating motor 13 starts to rotate, and the screw rod 2 rotates along with the output shaft of the rotating motor 13 as the screw rod 2 is coaxially connected with the output shaft of the rotating motor 13; after the sleeve 32 of the movable plate is sleeved on the upright posts 11, when the screw rod 2 rotates, the movable plate 3 cannot rotate along with the screw rod 2, so that the movable plate 3 can smoothly move along the length direction of the screw rod 2, and in the moving process, the sleeve 32 can also slide on the upright posts 11, so that the effect that the movable plate 3 can stably slide among the four upright posts 11 is achieved; therefore, the movable plate 3 can drive the slag storage box 4 to move smoothly in the length direction of the screw rod 2.
As shown in fig. 2 and 3, a vertical tube 42 is arranged on the side wall of the slag storage tank 4, an insertion rod 43 is slidably arranged in the vertical tube 42, an insertion hole 34 for inserting the insertion rod 43 is formed in the moving plate 3, a fixing member for fixing the insertion rod 43 in the vertical tube 42 is arranged on the vertical tube 42, the fixing member is a fastening bolt 421 threaded on the tube wall of the vertical tube 42, and one end of the fastening bolt 421 located in the vertical tube 42 is abutted against the insertion rod 43; in this embodiment, the insertion rod 43 is an iron rod, and the bottom wall of the insertion hole 34 is provided with a magnet 341 attached to the insertion rod 43; referring to fig. 4, the wall of the threaded sleeve 31 is further provided with a hanging ring 311, and the sidewall of the slag storage tank 4 is provided with a hook 44 fastened with the hanging ring 311.
After aligning the inserting rod 43 on the slag storage box 4 with the inserting hole 34, shifting the inserting rod 43 to enable the inserting rod 43 to vertically slide downwards in the vertical pipe 42, so that one end of the inserting rod 43 is inserted into the inserting hole 34, then screwing the abutting bolt 421 on the side wall of the vertical pipe 42, enabling one end of the abutting bolt 421 in the vertical pipe 42 to tightly abut against the inserting rod 43, enabling the inserting rod 43 to be fixed at a position which is always inserted into the inserting hole 34, and enabling the slag storage box 4 not to be easily influenced by the universal wheel 41 to slide on the moving plate 3; then, the hook 44 on the slag storage tank 4 is hung on the hanging ring 311, so that the slag storage tank 4 can be fixed for the second time, and the slag storage tank 4 is not easy to fall off from the moving plate 3 in the process that the moving plate 3 vertically moves.
Example two
A deslagging method for subway construction comprises the following steps:
pushing down the slag storage box 4 from the slope 33 of the moving plate 3 to a slag stacking position, and shoveling the slag into the slag storage box 4 by workers to enable the slag storage box 4 to be filled with slag;
secondly, pushing the movable plate 3 up by the slag storage box 4 filled with the slag again through the slope 33, adjusting the position of the slag storage box 4 to enable the end part of the inserting rod 43 to be positioned right above the inserting hole 34, vertically and downwards sliding the inserting rod 43 on the vertical pipe 42 to enable the inserting rod 43 to be inserted into the inserting hole 34, enabling the inserting rod 43 to be adsorbed with the magnet block 341 at this time, and finally screwing the abutting bolt 421 to abut the inserting rod 43 in the vertical pipe 42;
step three, buckling the hook 44 on the side wall of the slag storage tank 4 on the hanging ring 311;
and step four, starting the rotating motor 13 to enable the screw rod 2 to start to rotate, driving the movable plate 3 to drive the slag storage box 4 to ascend, closing the rotating motor 13 when ascending to the ground, taking the hook 44 on the slag storage box 4 down from the hanging ring 311, taking the inserted link 43 out of the insertion hole 34, and pushing the slag storage box 4 out of the movable plate 3.
The concrete working process comprises the steps of detaching the slag storage box 4 from the movable plate 3, realizing the random pushing of the slag storage box 4 due to the universal wheels 41, pushing the slag storage box 4 to a slag piling position, shoveling slag soil into the slag storage box 4 by workers, loading the slag storage box 4 on the movable plate 3 again after the slag storage box 4 is filled, inserting the inserted link 43 into the insertion hole 34, screwing the abutting bolt 421 to fix the inserted link 43, and then fastening the hook 44 into the hanging ring 311; then, the rotating motor 13 is started to enable the screw rod 2 to start to rotate, and at this time, the threaded sleeve 31 on the moving plate 3 is in threaded sleeve connection with the screw rod 2, and the moving plate 3 is in sliding connection with the four surrounding upright columns 11, so that the moving plate 3 does not rotate along with the screw rod 2 but moves along the length direction of the screw rod 2 under the rotation of the screw rod 2, and the moving plate 3 moves in the vertical direction; when the movable plate 3 carries the slag storage box 4 to move to the ground, the slag storage box 4 is detached from the movable plate 3, and then the slag in the slag storage box 4 is poured.
Claims (7)
1. The slag discharging device for subway construction is characterized by comprising a rectangular support plate (1) fixedly arranged on the ground bottom surface, wherein vertical upright posts (11) extending upwards to the ground top are respectively arranged at four corners of the support plate (1), a lead screw (2) is rotatably arranged at the center of the support plate (1), the lead screw (2) extends upwards vertically and has the same length as the upright posts (11), a top plate (12) is arranged at the top ends of the four upright posts (11), a driving assembly for driving the lead screw (2) to rotate is arranged on the top plate (12), a movable plate (3) with the same size as the support plate (1) is slidably connected between the four upright posts (11), a threaded sleeve (31) in threaded sleeve connection with the lead screw (2) is arranged at the center of the movable plate (3), and a slag storage box (4) is detachably arranged on two sides of the threaded sleeve (31) on the movable plate (3), the bottom of the slag storage box (4) is provided with universal wheels (41), a vertical pipe (42) is arranged on the side wall of the slag storage box (4), an inserting rod (43) is arranged in the vertical pipe (42) in a sliding mode, an inserting hole (34) for inserting the inserting rod (43) is formed in the moving plate (3), a fixing piece used for fixing the inserting rod (43) in the vertical pipe (42) is arranged on the vertical pipe (42), the inserting rod (43) is an iron rod, a magnet block (341) adsorbed with the inserting rod (43) is arranged on the bottom wall of the inserting hole (34), a hanging ring (311) is arranged on the wall of the threaded sleeve (31), and a hook (44) fastened with the hanging ring (311) is arranged on the side wall of the slag storage box (4).
2. The slag discharging device for subway construction as claimed in claim 1, wherein rolling bearings (5) are embedded on the faces of said supporting plate (1) and said top plate (12), and two ends of said screw rod (2) pass through said two rolling bearings (5) and are in interference fit with the inner rings of said rolling bearings (5).
3. Tapping device for subway construction as claimed in claim 2, wherein said driving assembly comprises a rotating motor (13) arranged on the top plate (12), the output shaft of said rotating motor (13) being coaxially connected to said screw (2).
4. The slag tapping device for subway construction as claimed in claim 1, wherein said moving plate (3) is fixedly provided with a sleeve (32) at each of four corners, said sleeve (32) is slidably fitted over said upright column (11).
5. The slag tapping device for subway construction as claimed in claim 1, wherein said fixing member comprises a fastening bolt (421) threaded through the wall of the vertical pipe (42), and one end of said fastening bolt (421) located in the vertical pipe (42) is abutted against said insertion rod (43).
6. Tapping device for subway construction as claimed in claim 5, wherein said moving plate (3) is provided with ramps (33) on both sides.
7. A deslagging method of a deslagging device of subway construction according to claim 6, which is characterized by comprising the following steps:
pushing down a slag storage box (4) from a slope (33) of a moving plate (3) to a slag stacking position, and shoveling slag into the slag storage box (4) by workers to enable the slag storage box (4) to be filled with slag;
secondly, pushing the movable plate (3) up by the slag storage box (4) filled with the slag again through the slope (33), adjusting the position of the slag storage box (4) to enable the end part of the insertion rod (43) to be positioned right above the insertion hole (34), vertically sliding the insertion rod (43) downwards on the vertical pipe (42) to enable the insertion rod (43) to be inserted into the insertion hole (34), enabling the insertion rod (43) to be adsorbed with the magnet block (341) at the moment, and finally screwing the abutting bolt (421) to abut the insertion rod (43) in the vertical pipe (42);
step three, buckling a hook (44) on the side wall of the slag storage box (4) on a hanging ring (311);
and step four, starting the rotating motor (13), enabling the screw rod (2) to start to rotate, driving the movable plate (3) to drive the slag storage box (4) to ascend, closing the rotating motor (13) when ascending to the ground, taking down the hook (44) on the slag storage box (4) from the hanging ring (311), taking the inserted rod (43) out of the insertion hole (34), and pushing the slag storage box (4) out of the movable plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811498420.1A CN109356610B (en) | 2018-12-08 | 2018-12-08 | Slag discharging device and method for subway construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811498420.1A CN109356610B (en) | 2018-12-08 | 2018-12-08 | Slag discharging device and method for subway construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109356610A CN109356610A (en) | 2019-02-19 |
| CN109356610B true CN109356610B (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811498420.1A Expired - Fee Related CN109356610B (en) | 2018-12-08 | 2018-12-08 | Slag discharging device and method for subway construction |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111410054B (en) * | 2020-03-26 | 2021-07-16 | 成都鑫都建设工程有限公司 | A mucking machine for subway construction |
| CN116573562B (en) * | 2023-06-02 | 2024-01-23 | 中铁二局第四工程有限公司 | Residue soil conveying device applied to cover excavation construction |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101044443B1 (en) * | 2009-03-05 | 2011-06-27 | 이예리 | Slab hanging up and down apparatus for top-down method of underground construction |
| CN102080567B (en) * | 2010-11-27 | 2012-07-04 | 上海纳米技术及应用国家工程研究中心有限公司 | Automatic carrying, replacing and blowing device for tunnel air purification material modules |
| CN104444942B (en) * | 2014-10-30 | 2017-05-03 | 绵阳市维博电子有限责任公司 | Double-screw synchronous lifting mechanism |
| CN105129672A (en) * | 2015-09-25 | 2015-12-09 | 苏州市优诺特升降机械有限公司 | Lead screw elevator with high stability |
| CN106089231A (en) * | 2016-07-23 | 2016-11-09 | 车新宁 | The device slagged tap continuously for subway work and the slag tapping method using this device |
| CN108502795A (en) * | 2018-04-20 | 2018-09-07 | 临沂大学 | A kind of mechanical elevating equipment |
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Effective date of registration: 20221201 Address after: 271000 Lide Science and Technology Industrial Park, Paitianmen Street, High tech Zone, Tai'an City, Shandong Province Patentee after: Shandong Guotun New Material Industry Development Co.,Ltd. Address before: No.6, 8th floor, building 2, No.16 Julong Road, Wuhou District, Chengdu, Sichuan 610094 Patentee before: CHENGDU XINDU CONSTRUCTION ENGINEERING Co.,Ltd. |
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