CN214277820U - Concrete impermeability instrument - Google Patents
Concrete impermeability instrument Download PDFInfo
- Publication number
- CN214277820U CN214277820U CN202120231759.6U CN202120231759U CN214277820U CN 214277820 U CN214277820 U CN 214277820U CN 202120231759 U CN202120231759 U CN 202120231759U CN 214277820 U CN214277820 U CN 214277820U
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- groove
- clamping
- die holder
- magnetic sheet
- hole
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- 238000009434 installation Methods 0.000 claims abstract description 35
- 230000003487 anti-permeability effect Effects 0.000 claims abstract description 4
- 230000008094 contradictory effect Effects 0.000 claims abstract description 3
- 230000005291 magnetic effect Effects 0.000 claims description 45
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 3
- 210000002421 cell wall Anatomy 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 235000013290 Sagittaria latifolia Nutrition 0.000 description 2
- 235000015246 common arrowhead Nutrition 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002969 artificial stone Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
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Abstract
The utility model relates to a concrete anti-permeability apparatus relates to check out test set's field, its including install the die holder on the workstation and with die holder fixed connection's cover mould, one side integrated into one piece that the cover mould is close to the die holder has the mounting panel of contradicting with the die holder, one side that the workstation was kept away from to the die holder is provided with a plurality of dead levers, one side integrated into one piece that the die holder was kept away from to the dead lever has the installation pole, set up the hole of wearing to establish that supplies the installation pole to wear to establish on the mounting panel, set up on the mounting panel and supply the dead lever to insert spacing hole, set up the intercommunication groove that is used for connecting wearing to establish hole and spacing hole on the mounting panel. This application has the installation of the cover die of being convenient for and the effect of dismantling.
Description
Technical Field
The application relates to the field of detection equipment, in particular to a concrete impermeability instrument.
Background
Concrete is artificial stone widely used in construction, and for some buildings, such as tunnels, hydraulic buildings and other building engineering, concrete used in the buildings is required to have specific impermeability. The concrete impermeability tester is mainly used for testing the impermeability of concrete and measuring impermeability labels.
In the related art, for example, chinese patent No. CN209196423U discloses a concrete impermeability instrument, which includes a fastening plate, wherein the fastening plate is provided with a plurality of openings; a plurality of cover die fastening mechanisms are arranged at the edge of the opening, each cover die fastening mechanism is provided with a cover die fixing hole, a counter bore is arranged at the upper end of each cover die fixing hole, and a cover die fixing bolt is arranged in each cover die fixing hole; the side of cover die fixed orifices sets up the screw thread post, the screw thread post is connected with the mounting plate, two springs of installation on the screw thread post, the top of screw thread post sets up adjusting nut.
In view of the above-mentioned related technologies, the inventor believes that the fastening plate is connected with the cover die through the cover die fixing bolt, each cover die is connected with a plurality of cover die fixing bolts, each cover die fixing bolt is connected with an adjusting nut through threads, and when the cover die is disassembled and fixed, the adjusting bolts need to be sequentially unscrewed and screwed by means of tools, which results in a complex assembling process of disassembling the cover die and an improved space.
SUMMERY OF THE UTILITY MODEL
In order to facilitate the installation and the dismantlement of cover mould, this application provides a concrete anti-permeability apparatus.
The application provides a concrete impermeability appearance adopts following technical scheme:
the utility model provides a concrete anti-permeability apparatus, including install the die holder on the workstation and with die holder fixed connection's cover mould, one side integrated into one piece that the cover mould is close to the die holder has the mounting panel of contradicting with the die holder, one side that the workstation was kept away from to the die holder is provided with a plurality of dead levers, one side integrated into one piece that the die holder was kept away from to the dead lever has the installation pole, set up the through-hole that supplies the installation pole to wear to establish on the mounting panel, set up on the mounting panel and supply the dead lever to insert spacing hole, set up on the mounting panel and be used for connecting the intercommunication groove of wearing to establish hole and spacing hole.
Through adopting above-mentioned technical scheme, the through hole on the mounting panel provides the space for wearing to establish of installation pole, and spacing hole on the mounting panel provides the space for the installation of dead lever, and when the mounting panel was close to the die holder, the installation pole inserted in the through hole on the mounting panel, and when rotating the die holder, the mounting panel rotated with the die holder in step, and the dead lever is at the intercommunication inslot rotation, and the dead lever inserts in spacing hole and contradicts with the pore wall in spacing hole, and the installation pole is contradicted on the mounting panel this moment. The mounting plate is inserted into the cavity between the die holder and the mounting plate and is mounted with the fixed rod in a limiting mode, the mounting rod can play a limiting role in the mounting plate, and the condition that the die sleeve is separated from the die holder is reduced. The mounting panel is fixed after synchronous rotation on a plurality of dead lever, need not with the help of the instrument, the installation and the dismantlement of the cover die of being convenient for.
Optionally, an elastic snap ring used for limiting the mounting plate is arranged on the mounting rod, and a clamping groove for clamping and fixing the elastic snap ring is formed in the mounting rod.
Through adopting above-mentioned technical scheme, the snap ring joint is fixed in the joint groove on the installation pole, and snap ring contradicts each other with the mounting panel, and snap ring can restrict the mounting panel upwards break away from the die holder, and snap ring compresses tightly the mounting panel to the direction of die holder.
Optionally, the elastic snap ring is provided with a contact block which is inserted into the communicating groove and is abutted against the fixed rod for limiting, and the contact block is provided with a butterfly bolt in threaded connection with the mounting plate.
Through adopting above-mentioned technical scheme, the conflict piece inserts in the intercommunication inslot, and the conflict piece removes in the intercommunication inslot with the snap ring is synchronous, and when the snap ring inserted the joint groove on the installation pole, the conflict piece contradicts with the cell wall in intercommunication groove each other, and the conflict piece is contradicted with the dead lever this moment, and the conflict piece can reduce the condition that the mounting panel removed to the direction of wearing to establish the hole, and butterfly bolt can strengthen the fixed of conflict piece on the mounting panel.
Optionally, a protection pad is arranged on one side of the elastic clamping ring close to the mounting plate.
Through adopting above-mentioned technical scheme, the snap ring joint is at the joint inslot, and the protection pad is located between snap ring and the mounting panel, and the protection pad keeps apart snap ring and mounting panel, and when snap ring removed on the mounting panel surface, the protection pad can play the effect of protection mounting panel.
Optionally, a ball plunger is arranged on the fixed rod, and a clamping hole for clamping and limiting the ball plunger is formed in the hole wall of the limiting hole.
Through adopting above-mentioned technical scheme, when the dead lever rotated to spacing hole, the dead lever was contradicted with the pore wall in spacing hole, and the bulb plunger on the dead lever inserts in the joint hole, realizes that the dead lever is spacing on the mounting panel, can reduce the mounting panel and remove to the direction of wearing to establish the hole.
Optionally, one side of the mounting plate, which is far away from the die holder, is provided with a magnetic sheet for attracting the mounting rod, and a magnetic sheet groove for mounting the magnetic sheet is formed in the mounting plate.
Through adopting above-mentioned technical scheme, installation pole after the rotation is contradicted in the surface of mounting panel, and the magnetic sheet groove on the mounting panel provides the space for the installation of magnetic sheet, can with the installation pole actuation after the magnetic sheet installation, can inject the dead lever in the position in spacing hole.
Optionally, a spacer is installed in the magnetic sheet groove, and an insertion groove for inserting and installing the magnetic sheet is formed in the spacer.
Through adopting above-mentioned technical scheme, the gasket is installed in the magnetic sheet groove, and the insertion groove on the gasket provides the space for the installation of magnetic sheet, and the gasket keeps apart mounting panel and magnetic sheet, can play the effect of protection magnetic sheet, and the gasket is convenient for the installation of magnetic sheet on the mounting panel.
Optionally, a clamping strip is arranged on the gasket, and a fixing groove for clamping and fixing the clamping strip is formed in the groove wall of the magnetic sheet groove.
Through adopting above-mentioned technical scheme, the gasket inserts in the magnetic sheet groove, and the joint strip on the gasket inserts in the fixed slot, and the joint strip is at male in-process, and the joint strip is contradicted on the cell wall in magnetic sheet groove, and the deformation takes place for the joint strip this moment, and when the joint strip inserted in the joint groove, the joint strip was contradicted on the cell wall in joint groove, realizes that the gasket is fixed on the mounting panel.
Optionally, the magnetic sheet is provided with a clamping protrusion, and a clamping groove for inserting the clamping protrusion into the clamping is formed in the groove wall of the fixing groove.
Through adopting above-mentioned technical scheme, the magnetic sheet inserts in the insertion groove on the gasket, and at the male in-process, the protruding conflict of joint on the magnetic sheet takes place to deform on the cell wall of insertion groove, and when the joint arch inserted in the joint recess, the gasket recovered deformation, and the protruding conflict of joint was spacing in the joint recess this moment, realized the installation of magnetic sheet on the gasket.
Optionally, an indication arrow is arranged on the cover die.
Through adopting above-mentioned technical scheme, the instruction arrow head on the cover mould plays the effect of reminding the staff by the directional direction in spacing hole of the direction of wearing to establish the hole, and the staff of being convenient for rotates cover mould and mounting panel according to the direction of instructing the arrow head.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the mounting plate rotates, the mounting plate is inserted into a gap between the die holder and the mounting plate, the mounting rod can limit the mounting plate, the condition that the sleeve die is separated from the die holder is reduced, and the mounting plate synchronously rotates on a plurality of fixed rods, so that the sleeve die is convenient to mount and dismount;
2. the contact block is inserted into the communicating groove, the contact block and the elastic snap ring synchronously move in the communicating groove, the elastic snap ring is fixed with the mounting rod, the contact block simultaneously contacts with the fixed rod and the groove wall of the communicating groove, and the contact block can reduce the situation that the mounting plate moves towards the direction of the through hole;
3. the installation pole after the rotation is contradicted in the surface of mounting panel, can with the installation pole actuation after the magnetic sheet installation, can inject the dead lever in the position in spacing hole.
Drawings
Fig. 1 is a schematic structural diagram of a concrete impermeability instrument in an embodiment of the present application.
Fig. 2 is an exploded view of the die set, mounting plate and die holder in an embodiment of the present application.
Fig. 3 is an exploded view of the die set and die holder in an embodiment of the present application.
Fig. 4 is an enlarged schematic view of the fixing rod, the mounting rod, the snap ring, the contact block and the protection pad in the part a of fig. 3 according to the embodiment of the present application.
FIG. 5 is an exploded view of the magnetic sheet, the spacer and the mounting plate of the portion B of FIG. 3 according to the embodiment of the present application.
Description of reference numerals: 1. a work table; 2. a die holder; 3. sleeving a mold; 4. mounting a plate; 5. fixing the rod; 6. mounting a rod; 7. perforating holes; 8. a limiting hole; 9. a communicating groove; 10. an elastic snap ring; 11. a clamping groove; 12. a contact block; 13. a protection pad; 14. a ball plunger; 15. a clamping hole; 16. a magnetic sheet; 17. a magnetic sheet slot; 18. a gasket; 19. inserting the groove; 20. a clamping strip; 21. fixing grooves; 22. clamping the bulges; 23. clamping the groove; 24. an arrow is indicated; 25. a butterfly bolt; 26. a seal ring; 27. and (7) water injection holes.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a concrete impermeability appearance. Referring to fig. 1 and 2, the concrete impermeability tester includes a workbench 1, a die holder 2 and a sleeve die 3, wherein the die holder 2 is fixed on the workbench 1, and the die holder 2 is annular. Six die holders 2 are arranged on the workbench 1, and the six die holders 2 can simultaneously perform test work. The cover die 3 is arranged on the die holder 2, the cover die 3 is cylindrical, a cylindrical cavity is formed in the cover die 3, and two ends of the cover die 3 are communicated with the outside. The tip integrated into one piece of cover mould 3 has mounting panel 4, and mounting panel 4 is coaxial setting with cover mould 3, and the external diameter of mounting panel 4 is greater than the external diameter of cover mould 3. The inner ring side wall of the die holder 2 is provided with a sealing ring 26, the sealing ring 26 can improve the sealing performance of the joint of the die holder 2 and the sleeve die 3, and the workbench 1 is provided with a water injection hole 27.
Referring to fig. 2 and 3, the die set 3 is mounted on the die holder 2 via the mounting plate 4, and the mounting manners of the six die sets 3 on the die holder 2 are the same, and a description will be given by taking one die set 3 and the die holder 2 as an example. One side integrated into one piece that workstation 1 was kept away from to die holder 2 has a plurality of dead lever 5, and dead lever 5 is the cylinder, and the quantity of dead lever 5 can be six, also can be eight, takes six dead levers 5 in this embodiment. One side integrated into one piece that die holder 2 was kept away from to dead lever 5 has installation pole 6, and installation pole 6 is coaxial setting with dead lever 5, and the external diameter of installation pole 6 is greater than the external diameter of dead lever 5, and installation pole 6 and dead lever 5 are made by ferromagnetic substance.
Referring to fig. 2 and 3, the mounting plate 4 is provided with through holes 7, the through holes 7 are in one-to-one correspondence with the mounting rods 6, the mounting plate 4 is further provided with limiting holes 8, the limiting holes 8 are in one-to-one correspondence with the fixing rods 5, the through holes 7 are not communicated with the adjacent limiting holes 8, and the limiting holes 8 are not communicated with the adjacent through holes 7. The mounting plate 4 is provided with a communicating groove 9, the communicating groove 9 connects the through hole 7 with the limiting hole 8, the communicating groove 9 is arranged in a circular arc shape along the axis of the cover die 3, and the communicating groove 9 is arranged in a decreasing manner along the direction of the through hole 7 to the limiting hole 8. The cover die 3 is marked with an indication arrow 24, and the indication arrow 24 points to the direction of the limiting hole 8 from the through hole 7. The through hole 7 on the mounting panel 4 is aimed at the mounting rod 6 and is inserted, and on the mounting panel 4 contradicts the die holder 2 this moment, the cover die 3 is rotated according to the direction of indicating arrow point 24, and dead lever 5 rotates in the 9 rotations of intercommunication grooves, makes dead lever 5 insert in spacing hole 8 and contradict on spacing hole 8's pore wall, and one side of mounting panel 4 is contradicted on die holder 2 this moment, and the opposite side of mounting panel 4 is contradicted in one side that the mounting rod 6 is close to dead lever 5.
Referring to fig. 3 and 4, an elastic snap ring 10 is clamped and fixed on the mounting rod 6, the elastic snap ring 10 is made of metal and has elasticity, and one end of the elastic snap ring 10 is opened. The installation rod 6 is provided with a clamping groove 11, and the clamping groove 11 is an annular groove and is circumferentially arranged on the installation rod 6. The end of the elastic snap ring 10, which is far away from the opening, is integrally formed with a contact block 12, and the contact block 12 is matched with the communication groove 9 in shape. The contact block 12 is inserted into the communicating groove 9, the contact block 12 and the elastic clamping ring 10 move synchronously in the communicating groove 9, when the elastic clamping ring 10 is clamped and fixed in the clamping groove 11, the contact block 12 is abutted against the groove wall of the communicating groove 9, the contact block 12 is abutted against the fixed rod 5, and the elastic clamping ring 10 is abutted against the mounting plate 4 at the moment. The number of the elastic snap rings 10 and the number of the interference blocks 12 can be two or more, and the number can be adjusted according to actual conditions.
Referring to fig. 3 and 4, a protection pad 13 is installed on one side of the elastic snap ring 10 close to the mounting plate 4, the protection pad 13 is made of rubber, and the protection pad 13 can isolate the elastic snap ring 10 from the mounting plate 4 to protect the mounting plate 4. The quantity of the abutting blocks 12 is consistent with that of the fixing rods 5, butterfly bolts 25 penetrate through the abutting blocks 12, and the butterfly bolts 25 penetrate through the abutting blocks 12 from top to bottom and are in threaded connection with the mounting plate 4. The number of the butterfly bolts 25 is three, the butterfly bolts 25 are installed on the contact block 12 at intervals, and the butterfly bolts 25 can strengthen the fixation of the contact block 12 on the mounting plate 4, so that the situation that the mounting plate 4 moves towards the direction of the through hole 7 is reduced.
Referring to fig. 4 and 5, the fixing rod 5 is provided with a ball plunger 14, the fixing rod 5 is provided with a hole for mounting the ball plunger 14, and glue is coated in the hole. The hole wall of the limiting hole 8 is provided with a clamping hole 15, and when the fixed rod 5 is abutted against the hole wall of the limiting hole 8, the ball plunger 14 is inserted into the clamping hole 15, so that the limiting between the fixed rod 5 and the mounting plate 4 is realized. One side of the mounting plate 4 close to the mounting rod 6 is provided with a magnetic sheet 16, and the magnetic sheet 16 can attract the mounting rod 6. The mounting plate 4 is provided with a magnetic sheet groove 17, a gasket 18 is arranged in the magnetic sheet groove 17, and the height of the gasket 18 is consistent with the depth of the magnetic sheet groove 17. The spacer 18 is provided with an insertion groove 19, the insertion groove 19 is a through groove, and the insertion grooves 19 correspond to the magnetic pieces 16 one by one.
Referring to fig. 5, the magnetic sheet 16 is integrally formed with a clamping protrusion 22 in a circumferential direction, the clamping protrusion 22 is hemispherical, a clamping groove 23 is formed on a wall of the insertion groove 19, and the clamping grooves 23 correspond to the clamping protrusions 22 one to one. The gasket 18 is integrally formed with two clamping strips 20, the clamping strips 20 are arranged along the width direction of the gasket 18, and the two clamping strips 20 are symmetrically arranged by taking the axis of the magnetic sheet 16 as an axis. The magnetic sheet groove 17 is provided with a fixing groove 21, and the fixing groove 21 corresponds to the clamping strips 20 one by one. The magnetic sheet 16 is arranged in the gasket 18, the gasket 18 is arranged in the magnetic sheet groove 17, the installed magnetic sheet 16 and the installation plate 4 are in the same plane, and the installed gasket 18 and the installation plate 4 are in the same plane.
The implementation principle of the concrete impermeability instrument of the embodiment of the application is as follows: the through hole 7 on the mounting plate 4 is aligned with the mounting rod 6 on the die holder 2 and inserted, the inserted sleeve die 3 rotates in the direction of an indication arrow 24, the fixing rod 5 synchronously rotates in the communicating groove 9 to the limiting hole 8, the fixing rod 5 abuts against the hole wall of the limiting hole 8, the magnetic sheet 16 is attracted to the mounting rod 6 at the moment, and the ball plunger 14 on the fixing rod 5 is inserted into the clamping hole 15. Insert the contact block 12 in the intercommunication groove 9, conflict block 12 and snap ring 10 slide along intercommunication groove 9, and when snap ring 10 joint was fixed in joint groove 11, conflict block 12 contradicted on dead lever 5, and conflict block 12 still contradicts on the cell wall of intercommunication groove 9.
The butterfly bolt 25 is screwed on the abutting block 12, the mounting plate 4 is reduced from rotating in the direction opposite to the direction indicated by the arrow 24, the mounting rod 6 abuts against the surface of the mounting plate 4, the fixation of the sleeve die 3 on the die holder 2 is enhanced, and the sealing ring 26 between the sleeve die 3 and the die holder 2 plays a role in sealing. The mounting plate 4 is inserted on the mounting rod 6 simultaneously, and the mounting plate 4 rotates on the plurality of dead lever 5 in step, need not to install the nut on every mounting rod 6, the installation and the dismantlement of the cover die 3 of being convenient for. The concrete impermeability instrument can detect and research the impermeability of concrete, also can be used for the quality detection of concrete, and cover die 3 convenient to detach and clean.
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 (10)
1. The utility model provides a concrete anti-permeability apparatus, including install die holder (2) on workstation (1) and die sleeve (3) with die holder (2) fixed connection, its characterized in that: cover die (3) are close to one side integrated into one piece of die holder (2) and have mounting panel (4) of contradicting with die holder (2), one side that workstation (1) was kept away from in die holder (2) is provided with a plurality of dead lever (5), one side integrated into one piece that die holder (2) were kept away from in dead lever (5) has installation pole (6), set up wearing to establish hole (7) that supply installation pole (6) to wear to establish on mounting panel (4), set up on mounting panel (4) and supply dead lever (5) to insert spacing hole (8), set up on mounting panel (4) and be used for connecting intercommunication groove (9) of wearing to establish hole (7) and spacing hole (8).
2. The concrete impermeability instrument of claim 1, wherein: the mounting rod (6) is provided with an elastic clamping ring (10) used for limiting the mounting plate (4), and the mounting rod (6) is provided with a clamping groove (11) for clamping and fixing the elastic clamping ring (10).
3. The concrete impermeability instrument of claim 2, wherein: the elastic clamping ring (10) is provided with a contact block (12) which is inserted into the communicating groove (9) and is abutted and limited by the fixing rod (5), and the contact block (12) is provided with a butterfly bolt (25) in threaded connection with the mounting plate (4).
4. A concrete impermeability instrument according to claim 3, wherein: and a protection pad (13) is arranged on one side of the elastic snap ring (10) close to the mounting plate (4).
5. The concrete impermeability instrument of claim 4, wherein: the fixing rod (5) is provided with a ball plunger (14), and the hole wall of the limiting hole (8) is provided with a clamping hole (15) for clamping and limiting the ball plunger (14).
6. The concrete impermeability instrument of claim 1, wherein: one side of the mounting plate (4) far away from the die holder (2) is provided with a magnetic sheet (16) used for attracting the mounting rod (6), and a magnetic sheet groove (17) for mounting the magnetic sheet (16) is formed in the mounting plate (4).
7. The concrete impermeability instrument of claim 6, wherein: a spacer (18) is arranged in the magnetic sheet groove (17), and an insertion groove (19) for inserting and installing the magnetic sheet (16) is formed in the spacer (18).
8. The concrete impermeability instrument of claim 7, wherein: the magnetic sheet clamping device is characterized in that a clamping strip (20) is arranged on the gasket (18), and a fixing groove (21) for clamping and fixing the clamping strip (20) is formed in the groove wall of the magnetic sheet groove (17).
9. The concrete impermeability instrument of claim 8, wherein: the magnetic sheet (16) is provided with a clamping protrusion (22), and a clamping groove (23) for inserting the clamping protrusion (22) into a clamping part is formed in the groove wall of the fixing groove (21).
10. The concrete impermeability instrument of claim 1, wherein: an indication arrow (24) is arranged on the cover die (3).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120231759.6U CN214277820U (en) | 2021-01-26 | 2021-01-26 | Concrete impermeability instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120231759.6U CN214277820U (en) | 2021-01-26 | 2021-01-26 | Concrete impermeability instrument |
Publications (1)
Publication Number | Publication Date |
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CN214277820U true CN214277820U (en) | 2021-09-24 |
Family
ID=77769122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202120231759.6U Expired - Fee Related CN214277820U (en) | 2021-01-26 | 2021-01-26 | Concrete impermeability instrument |
Country Status (1)
Country | Link |
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CN (1) | CN214277820U (en) |
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2021
- 2021-01-26 CN CN202120231759.6U patent/CN214277820U/en not_active Expired - Fee Related
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210924 |
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CF01 | Termination of patent right due to non-payment of annual fee |