CN220617014U - Automatic seal anti-odor dustbin - Google Patents
Automatic seal anti-odor dustbin Download PDFInfo
- Publication number
- CN220617014U CN220617014U CN202322087558.5U CN202322087558U CN220617014U CN 220617014 U CN220617014 U CN 220617014U CN 202322087558 U CN202322087558 U CN 202322087558U CN 220617014 U CN220617014 U CN 220617014U
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- Prior art keywords
- dustbin
- rope
- garbage
- stay cord
- odor
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- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 21
- 238000004804 winding Methods 0.000 claims description 12
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 241000255925 Diptera Species 0.000 abstract description 7
- 238000009395 breeding Methods 0.000 abstract description 3
- 230000001488 breeding effect Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/10—Waste collection, transportation, transfer or storage, e.g. segregated refuse collecting, electric or hybrid propulsion
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- Refuse Receptacles (AREA)
Abstract
The utility model relates to the technical field of dustbin, and discloses an automatic sealing anti-odor dustbin, which comprises a bottom bin, wherein a dustbin body is arranged at the top of the bottom bin, a case cover is hinged at one end of the back of the top of the dustbin body, a double-shaft motor is arranged in the middle of the inside of the bottom bin, and transmission shafts are arranged at two ends of the double-shaft motor; according to the utility model, the two groups of symmetrical supporting hanging plates are arranged, the outer sides of the garbage bags are hung on the outer sides of the supporting hanging plates, and the tightening ropes at the two ends of the garbage bags are hung on the outer sides of the two groups of hooks, so that the garbage bags are supported, the two groups of supporting hanging plates are close to each other and then adsorbed under the action of each part, and when the garbage box body is closed, the garbage bags inside the garbage box body are closed, so that the garbage bags form a closed environment while the odor is prevented from being emitted, and the possibility of mosquito breeding inside the garbage bags is reduced.
Description
Technical Field
The utility model relates to the technical field of dustbin, in particular to an automatic sealing anti-odor dustbin.
Background
At present, under the background that the state advocates construction ecological civilization greatly, environmental sanitation problem is more and more paid attention to, to the treatment of rubbish, adopts the dustbin to collect more, then unifies the treatment, and current dustbin structure is various, and its function is also constantly increasing, but the main function of dustbin is the collection rubbish to prevent breeding of mosquito on the rubbish.
The existing dustbin is generally sleeved with a dustbin bag in the dustbin body, but the existing dustbin is usually opened in the dustbin body, namely, when the dustbin cover is closed, the dustbin bag opening in the dustbin is still opened, so that the existing dustbin can be blocked with the outside only by closing the dustbin body and the dustbin cover, the open dustbin can easily cause the bad smell of the rubbish in the dustbin to escape out, and the garbage in the dustbin can easily enter mosquitoes, so that the mosquitoes can reproduce in the dustbin, and the dustbin structure capable of automatically sealing and preventing the peculiar smell from escaping is needed.
Disclosure of Invention
The utility model aims to provide an automatic sealing anti-odor dustbin, which aims to solve the problems that in the prior art, the garbage bag opening in the existing dustbin is still open when the dustbin cover is closed, odor is easy to overflow, and mosquitoes are easy to reproduce in the dustbin.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an automatic seal prevents peculiar smell dustbin, includes the end bin, the top in end bin is provided with the dustbin body, the back one end at dustbin body top articulates there is the case lid, the inside middle part in end bin is provided with biax motor, the both ends of biax motor all are provided with the transmission shaft, the middle part symmetry in end bin inner wall both sides is provided with the rope sheave mechanism with transmission shaft gear connection, the inside of dustbin body inner wall top both sides all is provided with the spout, the inside both ends symmetry of spout is provided with the slider, two sets of one side that the slider is close to each other is connected with the support link plate jointly, two sets of one side symmetry that the support link plate is close to each other is provided with the magnetic stripe, be provided with the mechanism that opens and shuts jointly between the back one end of dustbin body and the case lid.
Preferably, the rope wheel mechanism comprises rope wheels B and rope wheels C which are symmetrically arranged at the middle parts of two sides of the inner wall of the bottom bin, one ends of the rope wheels B and the rope wheels C, far away from the inner wall of the bottom bin, are provided with a gear B and a gear C which are meshed with each other, two groups of sliding grooves are formed in one ends, far away from each other, of the sliding grooves, the gear A is wound on the outer side of the gear C, the other ends of the connecting ropes A are connected with one ends of the sliding blocks, the connecting ropes B are wound on the outer side of the gear B, the other ends of the connecting ropes B are connected with the other ends of the sliding blocks, the connecting ropes A and the connecting ropes B are respectively identical to the winding directions of the outer sides of the gear C and the gear B, the function of driving the sliding blocks to slide inside the sliding grooves is achieved through the rope wheel structure, and the function of driving two groups of supporting hanging plates to drive garbage bag openings to open and close is achieved.
Preferably, the opening and closing mechanism comprises an installation shaft arranged at the middle part of the top of one end of the back of the dustbin body, a connecting sleeve block is arranged at the middle part of the installation shaft, the top of the connecting sleeve block is connected with the dustbin cover, a pull rope A and a pull rope B are respectively wound at the two ends of the outer side of the installation shaft, the pull rope A and the pull rope B are opposite to the winding direction of the installation shaft, rope sheaves A are respectively arranged at the middle parts of the outer sides of the sliding grooves, one ends of the pull rope A and the pull rope B, which are far away from the installation shaft, are respectively wound with the rope sheaves A, the winding direction of the pull rope A and the pull rope B is opposite to the winding direction of the rope sheaves A, the function of driving the dustbin body and the dustbin cover to automatically open and close is realized through the opening and closing mechanism, and a protective cover matched with the pull rope A and the pull rope B is arranged at the middle part of one end of the back of the dustbin body.
Preferably, the one end of the inside bottom of end storehouse evenly is provided with the battery, the middle part of the inside bottom other end of end storehouse evenly is provided with the controller, the middle part of the positive one end of dustbin body is provided with the infrared inductor of being connected with the controller wire, has realized the transfer function of signal through being provided with the infrared inductor to control biax motor through the controller.
Preferably, the edge position department at dustbin body top is provided with sealed recess, the edge position department of case lid laminating dustbin body top one end is provided with the sealing strip that mutually adapts with sealed recess, the middle part symmetry of dustbin body top both sides is provided with the couple to through being provided with sealing strip and sealed recess, thus the leakproofness between reinforcing dustbin body and the case lid, and fix a position the middle part stay cord of disposal bag through the couple, prevent that it from droing.
Preferably, both ends and the middle part inside the spout all are provided with four sets of through-holes that run through the dustbin body and extend to the inside of end storehouse symmetrically, and connect rope A and connect rope B and pass the inside of through-hole respectively, have guaranteed the normal displacement of connect rope A and connect rope B through being provided with the through-hole.
Compared with the prior art, the utility model has the beneficial effects that: the automatic sealing anti-odor dustbin;
through being provided with the support link plate of two sets of symmetries, through hanging the outside of disposal bag in the outside of supporting the link plate, and make the tightening rope at the both ends of disposal bag hang in the outside of two sets of couples, and then accomplish the support to the disposal bag, when opening the dustbin body, at this moment, through the inductive signal transmission of infrared inductor, and then the control is opened biax motor drive transmission shaft and is rotated, pass through gear A transmission kinetic energy and drive the reverse displacement of connecting rope A and connecting rope B, and then the pulling slider slides in the inside of spout, make two sets of sliders drive two sets of absorptive support link plate separation each other, and then drive the disposal bag sack opening, cooperation stay cord A and stay cord B receive the effect of transmission shaft rotation driving force simultaneously, drive the function that the inside disposal bag of installation axle outside was realized opening, and then make when opening the case lid and put in the function of the inside disposal bag of dustbin, when the case lid is closed, make two sets of support link plates be close to each other and adsorb, make its inside odor follow and close when the dustbin body is closed, thereby prevent to give off, also make the inside formation airtight inside of disposal bag at its possibility of mosquito.
Drawings
FIG. 1 is a schematic diagram of a front view of the present utility model;
FIG. 2 is a cross-sectional view of the front view of the present utility model;
FIG. 3 is a cross-sectional view of a front view of the structure of the present utility model;
FIG. 4 is an enlarged schematic view of the structure A of FIG. 3 according to the present utility model;
FIG. 5 is a cross-sectional view of a top view of the present utility model;
fig. 6 is an enlarged view showing the structure of the support hanging plate according to the present utility model.
In the figure: 1. a bottom bin; 2. a dustbin body; 3. an infrared sensor; 4. sealing the groove; 5. a hook; 6. a sealing strip; 7. a case cover; 8. a support hanging plate; 9. a connecting rope A; 10. a connecting rope B; 11. a gear A; 12. a gear B; 13. a gear C; 14. a biaxial motor; 15. a mounting shaft; 16. a slide block; 17. a chute; 18. a through hole; 19. a magnetic stripe; 20. a rope pulley A; 21. a storage battery; 22. a transmission shaft; 23. a protective cover; 24. a pull rope A; 25. a controller; 26. a pull rope B; 27. a rope pulley B; 28. and a sheave C.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, embodiments of the present utility model are provided: the utility model provides an automatic seal prevents peculiar smell dustbin, including end storehouse 1, the top of end storehouse 1 is provided with dustbin body 2, dustbin body 2 the back one end at top articulates there is case lid 7, the inside middle part of end storehouse 1 is provided with biax motor 14, the one end of the inside bottom of end storehouse 1 evenly is provided with battery 21, the middle part of the inside bottom other end of end storehouse 1 evenly is provided with controller 25, dustbin body 2 the middle part of positive one end is provided with the infrared inductor 3 that is connected with controller 25 wire, the transfer function of signal has been realized through being provided with infrared inductor 3, and control biax motor 14 through controller 25, biax motor 14's both ends all are provided with transmission shaft 22, dustbin body 1 inner wall both sides's middle part symmetry be provided with transmission shaft 22 gear connection's rope sheave mechanism, dustbin body 2 inner wall top both sides's inside all is provided with spout 17, the inside both ends symmetry of spout 17 is provided with slider 16, two sets of slider 16 are connected with support link plate 8 jointly in one side that is close to each other, two sets of support link plate 8 are provided with magnetic stripe 19 in symmetry in one side that is close to each other, be provided with between dustbin body 2 the back and case lid 7 jointly.
The edge position department at dustbin 2 top is provided with sealed recess 4, and the edge position department of case lid 7 laminating dustbin 2 top one end is provided with the sealing strip 6 of mutually adaptation with sealed recess 4, and the middle part symmetry of dustbin 2 top both sides is provided with couple 5, through being provided with sealing strip 6 and sealed recess 4 to the leakproofness between reinforcing dustbin 2 and the case lid 7, and fix a position the middle part stay cord of disposal bag through couple 5, prevent that it from droing.
The rope wheel mechanism comprises rope wheels B27 and rope wheels C28 which are symmetrically arranged at the middle parts of two sides of the inner wall of the bottom bin 1, one ends of the rope wheels B27 and the rope wheels C28, which are far away from the inner wall of the bottom bin 1, are provided with a gear B12 and a gear C13 which are meshed with each other, one ends, which are far away from each other, of two groups of sliding grooves 17 are provided with a gear A11 which is meshed with the gear B12, the outer side of the gear C13 is wound with a connecting rope A9, the other end of the connecting rope A9 is connected with one end of a sliding block 16, the outer side of the gear B12 is wound with a connecting rope B10, the other end of the connecting rope B10 is connected with the other end of the sliding block 16, the connecting rope A9 and the connecting rope B10 are respectively the same as the winding direction of the outer side of the gear C13 and the gear B12, the function of driving the sliding block 16 to slide grooves 17 is realized through the rope wheel structure, the two groups of supporting hanging plates 8 are further driven to realize the opening and closing of a garbage bag opening, the two ends and the middle parts inside the sliding grooves 17 are symmetrically provided with four groups of through holes 18 which penetrate through the garbage bin 2 and extend to the inside the bottom bin 1, and the connecting rope A9 and the connecting rope B10 respectively penetrate through the inside the through holes 18, normal displacement of the connecting rope A9 and the connecting rope B10 is guaranteed.
The opening and closing mechanism comprises an installation shaft 15 arranged in the middle of the top of one end of the back of the dustbin body 2, a connecting sleeve block is arranged in the middle of the installation shaft 15, the top of the connecting sleeve block is connected with the dustbin cover 7, two ends of the outer side of the installation shaft 15 are respectively wound with a pull rope A24 and a pull rope B26, the pull ropes A24 and the pull ropes B26 are opposite to the winding direction of the installation shaft 15, the middle of the outer sides of two groups of sliding grooves 17 is provided with a rope wheel A20, one ends of the pull ropes A24 and the pull ropes B26, far away from the installation shaft 15, are respectively wound with the rope wheel A20, the winding directions of the pull ropes A24 and the pull ropes B26 are opposite to the winding direction of the rope wheel A20, the function of driving the dustbin body 2 and the dustbin cover 7 to automatically open and close is achieved through the arrangement of the opening and closing mechanism, and the middle of one end of the back of the dustbin body 2 is provided with a protective cover 23 which is matched with the pull ropes A24 and the pull ropes B26.
The infrared sensor 3 and the controller 25 in the device are of the prior art, and the composition structure and the connection mode are identical to those of the prior device.
Working principle: when the dustbin is used, the storage battery 21 provides power for the device, when the dustbin cover 7 needs to be opened, the two groups of support hanging plates 8 are positioned at the middle position of the top of the dustbin body 2 and are mutually attached through the adsorption action of the two groups of magnetic strips 19, so that the bag opening of the garbage bag sleeved outside the support hanging plates 8 is closed, further, the position where a signal is transmitted to the controller 25 through the induction of the infrared sensor 3 is controlled to be opened, the double-shaft motor 14 is controlled to rotate, the transmission shaft 22 is driven to rotate through the rotation of the double-shaft motor 14, and the rope wheel A20 and the gear A11 are respectively driven to rotate through the rotation of the transmission shaft 22;
the rope wheels A20 rotate to drive the rope A24 and the rope B26 wound on the outer sides of the rope wheels A20 to follow displacement, the rope B26 is wound by the rope wheels A20, the installation shaft 15 is driven to rotate by the rope B26, the rope A24 at one end of the installation shaft 15 is driven to wind by the rotation of the installation shaft 15, the rope A24 positioned on the outer sides of the transmission shafts 22 is continuously released, the connecting sleeve block on the outer sides of the installation shaft 15 is driven to rotate, and the box cover 7 and the dustbin body 2 are driven to be opened by the connecting sleeve block;
further, the gear B12 meshed with the gear A11 is driven to rotate through the rotation of the gear A11, the gear C13 is further driven to rotate through the gear B12, at the moment, the gear B12 is meshed with the gear C13 and the rotation direction is opposite, so that the gear B12 drives the connecting rope B10 to be in a release extension state, the gear C13 drives the connecting rope A9 to be in a winding extension state, the connecting rope A9 is used for pulling the sliding block 16 and driving the connecting rope B10 to extend, the sliding block 16 slides in the sliding groove 17, so that the sliding block 16 drives the two groups of support hanging plates 8 to be far away from each other, and the support hanging plates 8 drive the garbage bag opening sleeved outside the support hanging plates to be opened, so that the function of opening the garbage bag opening in the garbage can 2 is realized when the cover 7 is opened;
after garbage is put in, the garbage is identified again through the infrared sensor 3, so that the controller 25 controls the double-shaft motor 14 to reversely rotate, at the moment, the two groups of rope pulleys A20 reversely rotate, and then the pull rope A24 is driven to be wound, so that the pull rope B26 is released and extended, the pull rope A24 at one end of the installation shaft 15 is continuously released and extended, and the pull rope B26 is continuously wound, so that the function of driving the box cover 7 and the garbage can body 2 to be closed is realized;
meanwhile, through the reverse rotation of gear A11, drive gear B12 and rotate, thereby make connecting rope B10 carry out the rolling, and connecting rope A9 constantly releases and extends, and then make slider 16 constantly slide in the inside of spout 17 and be close to, and then drive and support link plate 8 and constantly be close to, and adsorb each other through magnetic stripe 19, make the disposal bag sack that support link plate 8 outside cover was established closed, form sealed space, and then realized when closed dustbin body 2 and case lid 7, the function of the inside disposal bag sack of closed dustbin body 2 has reduced the escape of the interior rubbish foul smell taste of disposal bag, the possibility of mosquito breeding in its inside has also been reduced simultaneously.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides an automatic seal prevents peculiar smell dustbin, includes end storehouse (1), the top of end storehouse (1) is provided with dustbin body (2), the back one end at dustbin body (2) top articulates there is case lid (7), its characterized in that: the inside middle part of end storehouse (1) is provided with biax motor (14), the both ends of biax motor (14) all are provided with transmission shaft (22), the middle part symmetry of end storehouse (1) inner wall both sides is provided with the rope sheave mechanism of being connected with transmission shaft (22) gear, the inside of dustbin body (2) inner wall top both sides all is provided with spout (17), the inside both ends symmetry of spout (17) is provided with slider (16), two sets of one side that slider (16) are close to each other is connected with support link plate (8) jointly, two sets of one side symmetry that supports link plate (8) are close to each other is provided with magnetic stripe (19), be provided with opening and shutting mechanism jointly between the back one end of dustbin body (2) and case lid (7).
2. An automatically sealing anti-odor dustbin according to claim 1, wherein: the rope wheel mechanism comprises rope wheels B (27) and rope wheels C (28) which are symmetrically arranged at the middle parts of two sides of the inner wall of a bottom bin (1), one ends of the rope wheels B (27) and the rope wheels C (28) which are far away from the inner wall of the bottom bin (1) are provided with gears B (12) and gears C (13) which are meshed with each other, two groups of sliding grooves (17) are arranged at one ends which are far away from each other, gears A (11) which are meshed with the gears B (12) are arranged at the other ends, outside of the gears C (13) are wound with connecting ropes A (9), the other ends of the connecting ropes A (9) are connected with one end of a sliding block (16), outside of the gears B (12) are wound with connecting ropes B (10), the other ends of the connecting ropes B (10) are connected with the other ends of the sliding block (16), and winding directions of the connecting ropes A (9) and the connecting ropes B (10) are the same with the outside of the gears C (13) and the gears B (12) respectively.
3. An automatically sealing anti-odor dustbin according to claim 1, wherein: the utility model provides a garbage can, including opening and closing mechanism, including setting up in installation axle (15) at the top middle part of dustbin body (2) back one end, the middle part of installation axle (15) is provided with the adapter sleeve piece, and the top of adapter sleeve piece is connected with case lid (7) each other, the both ends in installation axle (15) outside are twined respectively and are had stay cord A (24) and stay cord B (26), and stay cord A (24) and stay cord B (26) are opposite with the winding direction of installation axle (15) respectively, two sets of the middle part in spout (17) outside all is provided with rope sheave A (20), the one end that installation axle (15) was kept away from to stay cord A (24) and stay cord B (26) is twined with rope sheave A (20) each other respectively, and stay cord A (24) and stay cord B (26) are opposite with the winding direction of rope A (20) respectively, the middle part of dustbin body (2) back one end is provided with protection casing (23) with stay cord A (24) and stay cord B (26) looks adaptation.
4. An automatically sealing anti-odor dustbin according to claim 1, wherein: the garbage bin is characterized in that a storage battery (21) is uniformly arranged at one end of the inner bottom of the bottom bin (1), a controller (25) is uniformly arranged in the middle of the other end of the inner bottom of the bottom bin (1), and an infrared sensor (3) connected with the controller (25) through a wire is arranged in the middle of one end of the front face of the garbage bin body (2).
5. An automatically sealing anti-odor dustbin according to claim 1, wherein: the garbage can is characterized in that a sealing groove (4) is formed in the edge position of the top of the garbage can body (2), sealing strips (6) mutually matched with the sealing groove (4) are arranged at the edge position of one end of the top of the garbage can body (2) in a fitting mode, and hooks (5) are symmetrically arranged in the middle of two sides of the top of the garbage can body (2).
6. An automatically sealing anti-odor dustbin according to claim 2, characterized in that: four groups of through holes (18) penetrating through the dustbin body (2) and extending to the inside of the bottom bin (1) are symmetrically arranged at two ends and the middle of the inside of the chute (17), and the connecting rope A (9) and the connecting rope B (10) respectively penetrate through the inside of the through holes (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322087558.5U CN220617014U (en) | 2023-08-04 | 2023-08-04 | Automatic seal anti-odor dustbin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322087558.5U CN220617014U (en) | 2023-08-04 | 2023-08-04 | Automatic seal anti-odor dustbin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220617014U true CN220617014U (en) | 2024-03-19 |
Family
ID=90212991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322087558.5U Active CN220617014U (en) | 2023-08-04 | 2023-08-04 | Automatic seal anti-odor dustbin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220617014U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117929063A (en) * | 2024-03-25 | 2024-04-26 | 中铁二十三局集团有限公司 | Preparation and evaluation method of water stable material sample based on tunnel waste slag |
-
2023
- 2023-08-04 CN CN202322087558.5U patent/CN220617014U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117929063A (en) * | 2024-03-25 | 2024-04-26 | 中铁二十三局集团有限公司 | Preparation and evaluation method of water stable material sample based on tunnel waste slag |
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