CN213897084U - Environment-friendly underground continuous wall is with connecting case - Google Patents
Environment-friendly underground continuous wall is with connecting case Download PDFInfo
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- CN213897084U CN213897084U CN202022715097.8U CN202022715097U CN213897084U CN 213897084 U CN213897084 U CN 213897084U CN 202022715097 U CN202022715097 U CN 202022715097U CN 213897084 U CN213897084 U CN 213897084U
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- 238000009434 installation Methods 0.000 claims abstract description 6
- 230000006978 adaptation Effects 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 8
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 8
- 241001330002 Bambuseae Species 0.000 abstract description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 8
- 239000011425 bamboo Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 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
- 238000005516 engineering process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an environment-friendly underground continuous wall is with connecting case, relate to the field of architectural equipment, it includes the box, the box includes the upper plate, lower plate and box section of thick bamboo, the outline of box section of thick bamboo is the cube form and all sets up to the opening for the terminal surface that is close to upper plate and lower plate, the box section of thick bamboo includes a plurality of unit sections, the unit section includes first board and second board, first board and second board all are provided with two, the face of two first boards is just to setting up, the face of two second boards is just to setting up, the slot has been seted up to the terminal surface that the first board is close to the upper plate, the terminal surface that the first board is close to the lower plate is provided with the inserted block, inserted block and slot grafting adaptation, be provided with the locking mechanism with the inserted block locking in the slot of seting up on adjacent first board on the first board, be provided with on the second board and install the installation mechanism on the first board with the second board. This application has the panel that makes unified standard can transport simultaneously, and simultaneously, panel size is little and can stack, has played the effect in the space when having saved the transportation.
Description
Technical Field
The application relates to the field of building equipment, in particular to an environment-friendly underground continuous wall joint box.
Background
The construction technology of the underground continuous wall is introduced into the Chinese construction industry from the early eighties of the last century, and the underground continuous wall is widely applied to the basic engineering construction so far, and the structural forms of the underground continuous wall are mainly divided into two types: one is a temporary retaining wall for underground earthwork excavation; and the other can be used as a structure for bearing load permanently. In the diaphragm wall work progress, because underground diaphragm wall comprises the single wall that becomes the end, in prior art's watering in-process, often put the steel reinforcement cage behind the joint incasement portion, just can contact the inside concrete of steel reinforcement cage both sides earlier stage unit groove when pulling out the joint case again.
The prior Chinese patent with the patent publication number of CN208650109U provides a water leakage-proof underground continuous wall joint box which comprises a plurality of joint boxes, wherein each joint box comprises a box body, a connector, a connecting groove and a pouring pipeline; the two joint boxes can be butted through the joint and the connecting groove; the pouring pipeline comprises a pouring pipe, a through hole is formed in the side wall of the box body, and the pouring pipe penetrates through the through hole and extends into the box body.
In view of the above-mentioned related art, the inventor believes that there is a disadvantage in that the length of the joint box is determined by the depth of the pit and is generally extremely large, and since the joint box is a construction equipment which can be repeatedly used, transportation with a construction site is required during use, and the joint box having an excessively large length is inconvenient to transport.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the large-size joint box is convenient to transport, the application provides an environment-friendly underground continuous wall is with joint box.
The application provides an environment-friendly underground is joint box for continuous wall adopts following technical scheme:
an environment-friendly joint box for an underground continuous wall comprises a box body, wherein the box body comprises an upper bottom plate, a lower bottom plate and a box cylinder, the outer contour of the box cylinder is cubic and the end surfaces close to the upper bottom plate and the lower bottom plate are both provided with openings, the box barrel comprises a plurality of unit sections, each unit section comprises a first plate and a second plate, the number of the first plates and the number of the second plates are two, the plate surfaces of the two first plates are arranged oppositely, the plate surfaces of the two second plates are arranged oppositely, the end surface of the first plate close to the upper bottom plate is provided with a slot, the end surface of the first plate close to the lower bottom plate is provided with an inserting block, the inserting block is inserted and matched with the slot, a locking mechanism for locking the inserting block in the slot formed on the adjacent first plate is arranged on the first plate, the second plate is provided with an installation mechanism for installing the second plate on the first plate.
Through adopting above-mentioned technical scheme, the box divide into the upper plate, lower plate and contain the case section of thick bamboo of a plurality of unit sections, install the second board on the first board through installation mechanism, and make two second board planes just right, thereby realize two just right purposes of first board plane, thereby splice into relatively stable unit section, through inserted block and slot plug-in connection between the adjacent first board, and then realize splicing into the purpose of case section of thick bamboo with a plurality of unit sections, when with the first board, when the second board split becomes solitary panel, the panel of unified standard can transport simultaneously, and simultaneously, the panel size is little and can stack, space when having saved the transportation.
Optionally, the locking mechanism comprises a locking rod, an elastic piece and an unlocking component;
a locking hole is formed in the side face, far away from the other first plate, of the insertion block, the locking rod is arranged in the slot and coaxial with the locking hole, the locking rod is in plug-in fit with the locking hole, the end face, close to the insertion block, of the locking rod is arranged to be an inclined face, the direction of the inclined face faces away from the bottom wall of the slot, a sliding hole coaxial with the locking rod is formed in the slot wall of the slot of the first plate, the locking rod is in sliding connection with the sliding hole, the elastic piece is arranged in the sliding hole, one end of the elastic piece is fixedly connected with the bottom wall of the sliding hole, and the other end of the elastic piece is fixedly connected with the end face of the locking rod; when the plug block is in plug connection with the slot, the locking rod is in plug connection with the locking hole, and the elastic piece is in an original state;
the unlocking assembly is arranged on the first plate and used for enabling the locking rod to exit from the locking hole.
Through adopting above-mentioned technical scheme, when the inserted block inserts in the slot, the tip that the inserted block was kept away from first board contacts with the inclined plane of locking pole earlier to make the power of driving first board downstream produce the component force of perpendicular to first board face direction, this component force drive locking pole returns to in the sliding hole, the elastic component is compressed, when sliding hole and locking pore alignment, the elastic component drive locking pole inserts in the locking hole, thereby with the inserted block locking in the slot, when needs transport joint box, make locking pole withdraw from the locking hole through the unblock subassembly, thereby realize with the unblock in inserted block and the slot, dismantle the first board of interconnect, the mesh of being convenient for the transportation.
Optionally, the unlocking assembly comprises an unlocking rod;
the first plate in the unlocking hole has been seted up on the diapire of sliding hole, the unlocking hole runs through the face of first plate, the unlocking lever slides and wears to locate in the unlocking hole, the one end of unlocking lever with the locking lever is connected, and the other end stretches out the face of first plate, the elastic component cover is located the outside of unlocking lever.
Through adopting above-mentioned technical scheme, outwards pulling unblock pole, unblock pole drives the locking pole and returns to the sliding hole in, when the locking pole withdrawed from the locking hole, takes out the inserted block from the slot in, realizes the purpose with first board unblock.
Optionally, an internal thread is arranged in the unlocking hole, an external thread is arranged on the outer side wall of the unlocking rod in the sliding hole, the unlocking rod is rotatably connected with the locking rod, and the unlocking rod can rotate around the axis of the unlocking rod; when the locking rod with when the side butt of inserted block, external screw thread on the unblock pole is located in the sliding hole and with the diapire butt of sliding hole.
Through adopting above-mentioned technical scheme, when needs unblock inserted block, outwards stimulate the unblock pole earlier and rotate the unblock pole again for the unblock pole is locked in the unblock hole, makes operating personnel need not to keep the position of unblock pole constantly, provides convenience for taking out the inserted block.
Optionally, the mounting mechanism comprises a slider;
the slider is provided with two and is located respectively the second board is close to the side of first board, the first board is close to two spouts have been seted up on the face of second board, the length direction perpendicular to of spout the face of upper plate, the slider with spout grafting adaptation, the second board passes through the slider reaches the spout with first board plug-in connection.
Through adopting above-mentioned technical scheme, after the concatenation of accomplishing adjacent first board, with the face of second board perpendicular with the face of first board, insert the slider in the spout again to the realization is installed the second board in the purpose of first board.
Optionally, a groove is formed in the side face, close to the upper base plate, of the second plate, a protruding block is arranged on the side face, close to the lower base plate, of the second plate, and the protruding block is in plug-in fit with the groove.
By adopting the technical scheme, after the first plate and the second plate are spliced into the unit section, the first plate and the second plate are continuously spliced on the basis of the unit section, and when the second plate is continuously spliced, the convex block is inserted into the groove, so that the connection relation between the adjacent unit sections is further increased.
Optionally, the surface of the lower plate is also provided with the slot, the surface of the lower plate is also provided with a locking mechanism for locking the insert block on the lower plate, the end surface of the lower plate provided with the slot is provided with a groove adapted to the projection in an inserting manner, and the end surface of the upper plate is also provided with the insert block adapted to the slot in an inserting manner and the projection adapted to the groove.
By adopting the technical scheme, after the plurality of first plates and the plurality of second plates are spliced into the plurality of unit sections, the plurality of unit sections are spliced into the box barrel, the upper base plate and the lower base plate are respectively covered at two open ends of the box barrel, the insertion block and the lug arranged on the upper base plate are respectively in plug-in connection with the insertion slot and the groove, the insertion slot and the groove are respectively in plug-in connection with the insertion block and the groove are arranged on the lower base plate, and therefore the complete box body is spliced.
Optionally, a waterproof rubber strip is arranged between the adjacent first plate and the adjacent second plate.
Through adopting above-mentioned technical scheme, waterproof rubber strip makes the connection between the adjacent unit section more inseparable, avoids the joint box infiltration when pouring concrete.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the first plate and the second plate are separated into separate plates, the uniformly formed plates can be transported simultaneously, and meanwhile, the plates are small in size and can be stacked, so that the space during transportation is saved;
2. when the inserted block needs to be unlocked, the unlocking rod is pulled outwards firstly and then is rotated, so that the unlocking rod is locked in the unlocking hole, an operator does not need to keep the position of the unlocking rod all the time, and convenience is provided for drawing the inserted block;
3. waterproof rubber strip makes the connection between the adjacent unit section more inseparabler, avoids connecting the case infiltration when pouring concrete.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a partial schematic view of an embodiment of the self-contained device;
fig. 3 is a schematic sectional view taken along line a-a of fig. 1.
Reference numerals: 1. a box body; 2. an upper base plate; 3. a lower base plate; 4. a case; 5. a unit section; 6. a first plate; 7. a second plate; 8. inserting a block; 9. a slot; 10. a lock lever; 11. a locking hole; 12. an elastic member; 13. a slide hole; 14. an unlocking lever; 15. unlocking the hole; 16. a slider; 17. a chute; 18. a groove; 19. and (4) a bump.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses environment-friendly underground continuous wall is with joint case. Referring to fig. 1 and 2, environment-friendly underground continuous wall includes box 1 with joint case, box 1 includes upper plate 2, lower plate 3 and cylinder 4, the outline of cylinder 4 is the cube strong and is close to the terminal surface of upper plate 2 and lower plate 3 and all sets up to the opening, cylinder 4 includes a plurality of unit sections 5, unit section 5 includes first board 6 and second board 7, first board 6 and second board 7 all are provided with two, the face of two first boards 6 is just to setting up, the face of two second boards 7 is just to setting up, slot 9 has been seted up to the side that first board 6 is close to upper plate 2, the terminal surface rigid coupling that first board 6 is close to lower plate 3 has inserted block 8, inserted block 8 and slot 9 grafting adaptation, slot 9 has also been seted up on the face of lower plate 3, lower plate 3 and first board 6 are all gone up and are provided with the locking mechanism with inserted block 8 locking in slot 9.
Referring to fig. 2 and 3, the locking mechanism includes a locking rod 10 and an elastic member 12, a locking hole 11 has been opened on the side of another first board 6 is kept away from to the inserted block 8, the locking rod 10 is disposed in the slot 9 and coaxial with the locking hole 11, the locking rod 10 is inserted and adapted with the locking hole 11, the end surface of the locking rod 10 close to the inserted block 8 is set as an inclined surface, the direction orientation of the inclined surface deviates from the bottom wall of the slot 9, the lower base board 3 and the first board 6 are both provided with a sliding hole 13 coaxial with the locking rod 10 on the slot wall of the slot 9, the locking rod 10 is slidably connected with the sliding hole 13, the elastic member 12 is disposed in the sliding hole 13, one end of the elastic member 12 is fixedly connected with the bottom wall of the sliding hole 13, the other end is fixedly connected with the end surface of the locking rod 10, when the inserted block 8 is inserted and connected with the slot 9, the locking rod 10 is inserted and connected with the locking hole 11, and the elastic member 12 is in an original state. In the embodiment of the present application, the number of the locking rods 10 and the locking holes 11 in a single slot 9 is correspondingly set to three.
In order to realize the purpose of unblock first board 6 in slot 9, refer to fig. 2 and fig. 3, the unblock subassembly includes unblock pole 14, unblock hole 15 has been seted up on the diapire of sliding hole 13 to first board 6, unblock hole 15 runs through the face of first board 6, unblock pole 14 slides and wears to locate in unblock hole 15, the one end and the lock pole 10 of unblock pole 14 rotate to be connected, unblock pole 14 can rotate around self axis, the other end stretches out the side of lower plate 3 or the face of first board 6, the outside of unblock pole 14 is located to elastic component 12 cover, elastic component 12 specifically sets up to the spring in this application embodiment. The unlocking hole 15 is internally provided with an internal thread, the outer side wall of the unlocking rod 14 positioned in the sliding hole 13 is provided with an external thread, and when the side surface of the locking rod 10 is abutted against the side surface of the insertion block 8, the external thread on the unlocking rod 14 is positioned in a sliding hollow inverse position and is abutted against the bottom wall of the sliding hole 13.
In the process of splicing the box body 1, the first plate 6 and the lower bottom plate 3 are firstly connected in a splicing manner, the first plate 6 is locked on the lower bottom plate through the locking mechanism, and the second plate 7 is spliced and provided with an installation mechanism for installing the second plate 7 on the first plate 6. The mounting mechanism comprises two sliding blocks 16, the two sliding blocks 16 are arranged and are respectively located on the side face, close to the first plate 6, of the second plate 7, two sliding grooves 17 are formed in the face, close to the second plate 7, of the first plate 6, the length direction of the sliding grooves 17 is perpendicular to the face of the lower plate 3, the sliding blocks 16 are in plug-in fit with the sliding grooves 17, the first plate 6 is in plug-in connection with the first plate 6 through the sliding blocks 16 and the sliding grooves 17, and the sliding blocks 16, the sliding grooves 17 and the second plate 7 are equal in length in the embodiment of. A groove 18 is formed in the side face, close to the upper bottom plate 2, of the second plate 7, a protruding block 19 is arranged on the side face, close to the lower bottom plate 3, of the second plate 7, and the protruding block 19 is in splicing fit with the groove 18. The lower base plate 3 is also provided with a groove 18 which is inserted and matched with the convex block 19.
After two first boards 6 and lower plate 3 plug-in connection, again with two second boards 7 and two first board 6 plug-in connection to make two second boards 7 all with lower plate 3 plug-in connection, thereby splice into first unit section 5, splice first board 6 and second board 7 to the direction of keeping away from lower plate 3 again in proper order, finally splice into complete case section of thick bamboo 4, the quantity of unit section 5 specifically sets up to three in this application embodiment.
The surface of the upper base plate 2 is also fixedly connected with an inserting block 8 matched with the inserting groove 9 and a groove 18 matched with the protruding block 19, after the box barrel 4 is spliced, the upper base plate 2 is spliced with another opening of the box barrel 4 to finally form a complete box body 1, and the side surfaces of the splicing seams of the first plate 6 and the second plate 7 are fixedly connected with waterproof rubber strips.
The implementation principle of the joint box for the environment-friendly underground continuous wall in the embodiment of the application is as follows: box 1 divide into upper plate 2, lower plate 3 and contain the case section of thick bamboo 4 of a plurality of unit sections 5, install second board 7 on first board 6 through installation mechanism, and make two second board 7 faces just right, thereby realize the just right purpose of two first board 6 faces, thereby splice into relatively stable unit section 5, through inserted block 8 and slot 9 plug-in connection between the adjacent first board 6, and then realize splicing into the purpose of case section of thick bamboo 4 with a plurality of unit sections 5, when with first board 6, when second board 7 split becomes solitary panel, the panel of unified standard can transport simultaneously, and simultaneously, the panel size is little and can stack, space when having saved the transportation.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides an underground diaphragm wall of environment-friendly is with joint box which characterized in that: comprises a box body (1), wherein the box body (1) comprises an upper bottom plate (2), a lower bottom plate (3) and a box barrel (4), the outer contour of the box barrel (4) is cube-shaped, the end faces of the box barrel (4) close to the upper bottom plate (2) and the lower bottom plate (3) are both provided with openings, the box barrel (4) comprises a plurality of unit sections (5), each unit section (5) comprises a first plate (6) and a second plate (7), the first plate (6) and the second plate (7) are both provided with two plates, the surfaces of the two first plates (6) are just opposite to each other, the surfaces of the two second plates (7) are just opposite to each other, the end face of the first plate (6) close to the upper bottom plate (2) is provided with a slot (9), the end face of the first plate (6) close to the lower bottom plate (3) is provided with an insert block (8), and the insert block (8) is inserted and matched with the slot (9), the first plate (6) is provided with a locking mechanism for locking the inserting block (8) in a slot (9) formed in the adjacent first plate (6), and the second plate (7) is provided with an installation mechanism for installing the second plate (7) on the first plate (6).
2. The joint box for an environmentally friendly underground diaphragm wall as claimed in claim 1, wherein: the locking mechanism comprises a locking rod (10), an elastic piece (12) and an unlocking component;
a locking hole (11) is arranged on the side surface of the inserting block (8) far away from the other first plate (6), the locking rod (10) is arranged in the slot (9) and is coaxial with the locking hole (11), the locking rod (10) is in plug-in fit with the locking hole (11), the end face, close to the insertion block (8), of the locking rod (10) is provided with an inclined surface, the direction of the inclined surface faces the bottom wall departing from the insertion groove (9), the wall of the slot (9) of the first plate (6) is provided with a sliding hole (13) which is coaxial with the locking rod (10), the locking rod (10) is connected with the sliding hole (13) in a sliding way, the elastic piece (12) is arranged in the sliding hole (13), one end of the elastic piece (12) is fixedly connected with the bottom wall of the sliding hole (13), and the other end of the elastic piece is fixedly connected with the end face of the locking rod (10); when the insertion block (8) is in insertion connection with the insertion slot (9), the locking rod (10) is in insertion connection with the locking hole (11), and the elastic piece (12) is in an original state;
the unlocking assembly is arranged on the first plate (6) and used for enabling the locking rod (10) to exit from the locking hole (11).
3. The joint box for an environmentally friendly underground diaphragm wall as claimed in claim 2, wherein: the unlocking assembly comprises an unlocking rod (14);
first board (6) in the lockhole (15) have been seted up on the diapire of sliding hole (13), lockhole (15) run through the face of first board (6), lockhole (14) slide and wear to locate in lockhole (15), the one end of lockhole (14) with locking lever (10) are connected, and the other end stretches out the face of first board (6), elastic component (12) cover is located the outside of lockhole (14).
4. The joint box for an environmentally friendly underground diaphragm wall as claimed in claim 3, wherein: an internal thread is arranged in the unlocking hole (15), an external thread is arranged on the outer side wall of the unlocking rod (14) positioned in the sliding hole (13), the unlocking rod (14) is rotatably connected with the locking rod (10), and the unlocking rod (14) can rotate around the axis of the unlocking rod; when the locking rod (10) is abutted against the side face of the insertion block (8), the external thread on the unlocking rod (14) is positioned in the sliding hole (13) and abutted against the bottom wall of the sliding hole (13).
5. The joint box for an environmentally friendly underground diaphragm wall as claimed in claim 4, wherein: the mounting mechanism comprises a slider (16);
slider (16) are provided with two and are located respectively second board (7) are close to the side of first board (6), first board (6) are close to two spout (17) have been seted up on the face of second board (7), the length direction perpendicular to of spout (17) the face of upper plate (2), slider (16) with spout (17) grafting adaptation, second board (7) pass through slider (16) reach spout (17) with first board (6) plug-in connection.
6. The joint box for an environmentally friendly underground diaphragm wall as claimed in claim 5, wherein: a groove (18) is formed in the side face, close to the upper bottom plate (2), of the second plate (7), a protruding block (19) is arranged on the side face, close to the lower bottom plate (3), of the second plate (7), and the protruding block (19) is in plug-in fit with the groove (18).
7. The joint box for an environmentally friendly underground diaphragm wall as claimed in claim 6, wherein: the improved structure is characterized in that the slot (9) is also formed in the surface of the lower bottom plate (3), a locking mechanism for locking the insert block (8) on the lower bottom plate (3) is also arranged on the surface of the lower bottom plate (3), the lower bottom plate (3) is arranged on the end surface of the slot (9) and provided with a groove (18) matched with the insert block (19) in an inserting mode, the end surface of the upper bottom plate (2) is also provided with a groove (18) matched with the insert block (8) matched with the insert block (9) in an inserting mode, and the groove (18) is matched with the projection block (19).
8. The joint box for an environmentally friendly underground diaphragm wall as claimed in claim 7, wherein: and a waterproof rubber strip is arranged between the adjacent first plate (6) and the adjacent second plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022715097.8U CN213897084U (en) | 2020-11-20 | 2020-11-20 | Environment-friendly underground continuous wall is with connecting case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022715097.8U CN213897084U (en) | 2020-11-20 | 2020-11-20 | Environment-friendly underground continuous wall is with connecting case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213897084U true CN213897084U (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022715097.8U Expired - Fee Related CN213897084U (en) | 2020-11-20 | 2020-11-20 | Environment-friendly underground continuous wall is with connecting case |
Country Status (1)
| Country | Link |
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| CN (1) | CN213897084U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411924A (en) * | 2021-12-25 | 2022-04-29 | 广东定源建设工程有限公司 | Sponge district is close to wall seepage well system |
-
2020
- 2020-11-20 CN CN202022715097.8U patent/CN213897084U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411924A (en) * | 2021-12-25 | 2022-04-29 | 广东定源建设工程有限公司 | Sponge district is close to wall seepage well system |
| CN114411924B (en) * | 2021-12-25 | 2024-02-20 | 广东定源项目管理有限公司 | Sponge district leans on wall seepage well system |
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Granted publication date: 20210806 |