CN117846100A - Drainage pipeline with inner wall cleaning mechanism and use method thereof - Google Patents
Drainage pipeline with inner wall cleaning mechanism and use method thereof Download PDFInfo
- Publication number
- CN117846100A CN117846100A CN202410183380.0A CN202410183380A CN117846100A CN 117846100 A CN117846100 A CN 117846100A CN 202410183380 A CN202410183380 A CN 202410183380A CN 117846100 A CN117846100 A CN 117846100A
- Authority
- CN
- China
- Prior art keywords
- pipeline body
- wall
- pipeline
- cleaning mechanism
- sundries
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000007790 scraping Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 244000309464 bull Species 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 8
- 239000010865 sewage Substances 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
- B01D29/6415—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a rotary movement with respect to the filtering element
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
- E03F9/002—Cleaning sewer pipes by mechanical means
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
- E03F9/007—Devices providing a flushing surge
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning In General (AREA)
Abstract
The invention relates to the technical field of drainage pipelines, in particular to a drainage pipeline with an inner wall cleaning mechanism and a use method thereof. According to the invention, the motor is turned on, the output end of the motor drives the rotating rod to rotate, the rotating rod drives the connecting rod, and then the scraping plate scrapes on the inner wall of the pipeline body under the action of the connecting rod, so that the inner wall of the pipeline body can be cleaned, attachments on the inner wall of the pipeline body can be cleaned, and after the attachments fall, the attachments can be driven to the position of the water outlet under the action of the spiral blade, so that the interior of the pipeline can be cleaned.
Description
Technical Field
The invention relates to the technical field of drainage pipelines, in particular to a drainage pipeline with an inner wall cleaning mechanism and a use method thereof.
Background
The drain pipe refers to a system consisting of a pipe channel for collecting and discharging sewage, wastewater and rainwater and auxiliary facilities thereof; the drainage pipeline with the inner wall cleaning mechanism comprises a main pipe, a branch pipe and a pipeline leading to a treatment plant, wherein the main pipe, the branch pipe and the pipeline are built on a street or elsewhere, the pipeline is used as a drainage pipeline for statistics, a layer of attachment is left on the inner wall of the pipeline after the drainage pipeline is used for a long time, the inner diameter of the pipeline is reduced, the drainage of the pipeline is affected, the inner wall of the pipeline is required to be cleaned, excessive attachment accumulation is prevented, and the drainage condition of the pipeline is reduced.
Disclosure of Invention
The present invention is directed to solving the technical problems set forth in the background art.
The invention adopts the following technical scheme: the utility model provides a take inner wall wiper mechanism's drainage pipe, includes the pipeline body, the fixed surface of pipeline body installs the drain, the fixed surface of pipeline body installs the outlet, the fixed surface of pipeline body installs the fixed block, the fixed surface of fixed block installs the apron, the fixed surface of apron installs the motor, the output fixed mounting of motor has the bull stick, the surface rotation of bull stick is connected with the filter, the fixed surface of bull stick installs the connecting rod, the fixed surface of connecting rod installs the scraper blade.
Preferably, the spiral blade is fixedly arranged on the surface of the rotating rod. Here, can conveniently drive outlet department to the attachment of scraping on the inner wall, avoid the attachment to pile up again in the inside of pipeline body simultaneously.
Preferably, the scrapers are attached to the inner wall of the pipeline body, the number of the scrapers is two, and the two groups of scrapers are symmetrically distributed in the pipeline. Here, the cleaning efficiency of the inner wall of the pipe body is facilitated to be improved.
Preferably, the surface of the cover plate is inserted with a bolt, the surface of the fixed block is provided with a screw hole, the bottom surface of the cover plate is fixedly provided with a convex block, the diameter of the convex block is equal to the diameter of the inner wall of the pipeline body, and the surface of the convex block is fixedly provided with a sealing ring. Here, the sealability between the cover plate and the pipe body can be improved.
Preferably, a baffle ring is fixedly arranged in the pipeline body, and the baffle ring is attached to the surface of the filter plate. Here, the position of the filter plate can be limited, and meanwhile, the stability of the filter plate is improved.
Preferably, the surface of the rotating rod is fixedly provided with a blade, the surface of the rotating rod is fixedly provided with a brush, and the brush is rotationally connected on the surface of the filter plate. Here, the broken-up treatment of the articles flowing to the filter plate position can be performed, and the blocking of the filter plate can be avoided by the brush.
Preferably, the blade is located right above the brush, and the drain outlet is located right below the blade. Here, the broken sundries can be conveniently discharged.
The application method of the drainage pipeline with the inner wall cleaning mechanism comprises the following steps:
s1: when the water flow passes through the position of the filter plate, sundries in the water flow can be crushed by the blades, so that the sundries are prevented from accumulating on the surface of the filter plate and blocking;
s2: after sundries are crushed, the brush can clean the surface of the filter plate under the action of the brush, so that the filter plate is prevented from being blocked by tiny sundries, and the normal use of the drain pipe is prevented from being influenced;
s3: sundries are discharged out of the pipeline body through the sewage outlet, so that the sundries cannot be accumulated in the pipeline body;
s4: the motor is turned on, the output end of the motor drives the rotating rod to rotate, the rotating rod drives the connecting rod rotating rod, and then the scraping plate scrapes on the inner wall of the pipeline body under the action of the connecting rod, so that the inner wall of the pipeline body can be cleaned;
s5: when the attachments fall, the attachments can be driven to the position of the water outlet under the action of the spiral blades, so that the interior of the pipeline can be cleaned;
s6: the bolt is loosened from the screw hole, so that the cover plate is separated from the pipeline body, the cover plate is taken down from the pipeline body, then the cover plate drives the rotating rod to be pulled out from the interior of the pipeline body, and the rotating rod drives the spiral blade, the scraping plate and the filter plate to be taken out from the interior of the pipeline body, so that personnel can maintain the spiral blade conveniently.
Compared with the prior art, the invention has the advantages and positive effects that:
1. according to the invention, the motor, the rotating rod, the connecting rod, the scraping plate and the filter plate structure are arranged, the output end of the motor drives the rotating rod to rotate, the rotating rod drives the connecting rod rotating rod, and then the scraping plate scrapes on the inner wall of the pipeline body under the action of the connecting rod, so that the inner wall of the pipeline body can be cleaned, attachments on the inner wall of the pipeline body are cleaned, after the attachments fall, the attachments can be driven to the position of the water outlet under the action of the spiral blade, so that the interior of the pipeline can be cleaned, impurities flowing through the pipeline can be filtered through the filter plate, and the cleaning efficiency of the pipeline can be improved.
2. According to the invention, the bolts are loosened from the screw holes through arranging the bolts, the screw holes, the convex blocks, the sealing rings and the baffle ring structures, so that the cover plate is separated from the pipeline body, the cover plate is taken down from the pipeline body, then the cover plate drives the rotary rod to be pulled out from the pipeline body, the rotary rod drives the spiral blades, the scraping plates and the filter plates to be taken out from the pipeline body, so that personnel can maintain the spiral blades, and the sealing performance between the cover plate and the pipeline body can be improved through arranging the sealing rings on the surfaces of the convex blocks, so that leakage of the pipeline is avoided.
3. According to the invention, the blades and the hairbrush structure are arranged, so that sundries in water flow can be crushed by the blades, the sundries are prevented from being accumulated on the surface of the filtering plate to cause blockage, and after the sundries are crushed, the surface of the filtering plate can be cleaned by the hairbrush under the action of the hairbrush, so that the blockage of the filtering plate caused by tiny sundries is avoided, and the normal use of a drain pipe is influenced.
Drawings
FIG. 1 is a schematic view of a drain pipe with an inner wall cleaning mechanism and a method of using the same according to the present invention;
FIG. 2 is a cross-sectional view of a drain pipe with an inner wall cleaning mechanism and a method of using the same according to the present invention;
FIG. 3 is a schematic view illustrating a drain pipe with an inner wall cleaning mechanism and a method for using the same according to the present invention;
FIG. 4 is a schematic view of a filter plate with an inner wall cleaning mechanism and a drainage pipeline according to the present invention;
fig. 5 is a schematic diagram of a drain pipe with an inner wall cleaning mechanism and a cover plate thereof according to the present invention.
Legend description:
1. a pipe body; 2. a sewage outlet; 3. a water outlet; 4. a fixed block; 5. a screw hole; 6. a cover plate; 7. a bolt; 8. a motor; 9. a rotating rod; 10. spiral leaves; 11. a connecting rod; 12. a scraper; 13. a filter plate; 14. a blade; 15. a brush; 16. a bump; 17. a seal ring; 18. a baffle ring.
Detailed Description
In order that the above objects, features and advantages of the invention will be more clearly understood, a further description of the invention will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as described herein, and therefore the present invention is not limited to the specific embodiments of the disclosure that follow.
Example 1
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a take inner wall wiper mechanism's drainage pipe, including pipeline body 1, pipeline body 1's surface fixed mounting has drain 2, pipeline body 1's surface fixed mounting has outlet 3, pipeline body 1's surface fixed mounting has fixed block 4, fixed block 4's surface fixed mounting has apron 6, apron 6's surface fixed mounting has motor 8, motor 8's output fixed mounting has bull stick 9, bull stick 9's surface fixed mounting has helical blade 10, can conveniently drive outlet 3 department to the attachment scraped on the inner wall, avoid the attachment to pile up again in pipeline body 1's inside simultaneously, the surface rotation of bull stick 9 is connected with filter 13, the surface fixed mounting of bull stick 9 has connecting rod 11, connecting rod 11's surface fixed mounting has scraper blade 12, scraper blade 12 is laminated with pipeline body 1's inner wall mutually, the quantity of scraper blade 12 is two sets of, two sets of scraper blades 12 are the symmetry form in the inside of pipeline and distribute, help improving the cleaning efficiency of pipeline body 1 inner wall, when the inner wall of pipeline body 1 cleans, motor 8 is opened, motor 8's output drive bull stick 9 rotates, bull stick 9 drives connecting rod 11, then scraper blade 12 drives connecting rod 11, scraper blade 11 under the effect of scraper blade 12 under the inner wall 1 can carry out the effect on pipeline body 1 and can remove attachment, can be carried out the inner wall in order to clean the inner wall 1 under the effect of pipeline body, thereby the inner wall is cleaned down in pipeline body, can be cleaned down in the position of the inner wall 1, and can be cleaned down.
Example two
Referring to fig. 2-3, in fig. 5, a bolt 7 is inserted into the surface of the cover plate 6, a screw hole 5 is formed in the surface of the fixing block 4, a bump 16 is fixedly installed on the bottom surface of the cover plate 6, the diameter of the bump 16 is equal to the diameter of the inner wall of the pipeline body 1, a sealing ring 17 is fixedly installed on the surface of the bump 16, a baffle ring 18 is fixedly installed on the inner surface of the pipeline body 1, the baffle ring 18 is attached to the surface of the filter plate 13, if maintenance needs to be performed on the spiral blade 10, the bolt 7 is loosened from the screw hole 5, the cover plate 6 is separated from the pipeline body 1, the cover plate 6 is removed from the pipeline body 1, then the cover plate 6 drives a rotating rod 9 to be pulled out from the inner part of the pipeline body 1, the rotating rod 9 drives the spiral blade 10, a scraping plate 12 and the filter plate 13 to be taken out from the inner part of the pipeline body 1, so that personnel can maintain the spiral blade 10, and the sealing performance between the cover plate 6 and the pipeline body 1 can be improved by arranging the sealing ring 17 on the surface of the bump 16, and leakage is avoided.
Example III
Referring to fig. 2-4, the surface of the rotating rod 9 is fixedly provided with a blade 14, the surface of the rotating rod 9 is fixedly provided with a brush 15, the brush 15 is rotationally connected on the surface of the filter plate 13, the blade 14 is positioned right above the brush 15, the sewage outlet 2 is positioned right below the blade 14, when water flows through the position of the filter plate 13, sundries in the water flow can be crushed by the blade 14, the sundries are prevented from being accumulated on the surface of the filter plate 13 to cause blockage, after the sundries are crushed, under the action of the brush 15, the brush 15 can clean the surface of the filter plate 13 to prevent the filter plate 13 from being blocked by tiny sundries, the normal use of a drain pipe is affected, and the sundries can be discharged out of the pipeline body 1 through the sewage outlet 2, so that the sundries cannot be accumulated in the pipeline body 1.
The application method of the drainage pipeline with the inner wall cleaning mechanism comprises the following steps:
s1: when the water flow passes through the position of the filter plate 13, sundries in the water flow can be crushed by the blades 14, so that the sundries are prevented from accumulating on the surface of the filter plate 13 and blocking;
s2: after sundries are crushed, under the action of the hairbrush 15, the hairbrush 15 can clean the surface of the filter plate 13, so that the filter plate 13 is prevented from being blocked by tiny sundries, and the normal use of a drain pipe is prevented from being influenced;
s3: sundries are discharged out of the pipeline body 1 through the sewage outlet 2, so that the sundries cannot be accumulated in the pipeline body 1;
s4: the motor 8 is turned on, the output end of the motor 8 drives the rotating rod 9 to rotate, the rotating rod 9 drives the connecting rod 11 to rotate, and then the scraping plate 12 scrapes on the inner wall of the pipeline body 1 under the action of the connecting rod 11, so that the inner wall of the pipeline body 1 can be cleaned;
s5: when the attachments fall, under the action of the spiral blades 10, the attachments can be driven to the position of the water outlet 3, so that the interior of the pipeline can be cleaned;
s6: the bolt 7 is loosened from the screw hole 5, the cover plate 6 is separated from the pipeline body 1, the cover plate 6 is taken down from the pipeline body 1, then the cover plate 6 drives the rotating rod 9 to be pulled out from the interior of the pipeline body 1, and the rotating rod 9 drives the spiral blade 10, the scraping plate 12 and the filter plate 13 to be taken out from the interior of the pipeline body 1, so that personnel can maintain the spiral blade 10.
Working principle: when rivers pass through the position of filter 13, utilize blade 14 can carry out broken processing with debris in the rivers, avoid debris to pile up on the surface of filter 13, cause the jam, after debris is broken, under the effect of brush 15, brush 15 can clear up the surface of filter 13, avoid tiny amount debris to cause filter 13 to block up, influence the normal use of drain pipe, and debris can discharge pipeline body 1 inside through drain 2, make it can not pile up in pipeline body 1 inside, when the inner wall of pipeline body 1 is clean, open motor 8, the output of motor 8 drives bull stick 9 and rotates, bull stick 9 drives connecting rod 11 bull stick 9, then scraper blade 12 is under the effect of connecting rod 11, scrape on the inner wall of pipeline body 1 for can clean the inner wall of pipeline body 1, clear up the attachment on the inner wall of pipeline body 1, after the attachment falls down, under the effect of helical blade 10, thereby can drive the position of outlet 3, can clean up pipeline inside, if need be to the helical blade 10 when maintaining, with 7 follow 5 in the body, make pipeline body 6 and helical blade 6 separate from the inner wall 1, thereby take out the bull stick 6 and take out the apron 1 from the inner wall of pipeline body 1, take place the apron 1 and seal plate 1 is convenient for take place under the effect of the apron 1, take place of the apron 1 is in the apron 1, take out the apron 1 is convenient for take place under the apron 1, take place in the apron 1 is convenient for the apron is 1, take out the apron is convenient for the apron is 1 is convenient for the apron is located in the apron 1, take out from the apron is 1.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a take inner wall wiper mechanism's drainage pipe, includes pipeline body (1), its characterized in that: the utility model discloses a pipeline, including pipeline body (1), fixed surface, connecting rod (9), connecting rod (11), fixed surface has drain (2) on the surface fixed mounting of pipeline body (1), fixed surface has fixed block (4), fixed surface has apron (6) on fixed surface of fixed block (4), fixed surface has motor (8) on apron (6), fixed output of motor (8) has bull stick (9), the surface rotation of bull stick (9) is connected with filter (13), fixed surface of bull stick (9) installs connecting rod (11), fixed surface of connecting rod (11) installs scraper blade (12).
2. The drainage pipe with an inner wall cleaning mechanism according to claim 1, wherein: spiral blades (10) are fixedly arranged on the surface of the rotating rod (9).
3. The drainage pipe with an inner wall cleaning mechanism according to claim 1, wherein: the scraping plates (12) are attached to the inner wall of the pipeline body (1), the number of the scraping plates (12) is two, and the two scraping plates (12) are symmetrically distributed in the pipeline.
4. The drainage pipe with an inner wall cleaning mechanism according to claim 1, wherein: the surface of apron (6) is inserted and is equipped with bolt (7), screw (5) have been seted up on the surface of fixed block (4), the bottom surface fixed mounting of apron (6) has lug (16), and the diameter of lug (16) equals with the inner wall diameter of pipeline body (1), the surface fixed mounting of lug (16) has sealing washer (17).
5. The drainage pipe with an inner wall cleaning mechanism according to claim 1, wherein: the inside of pipeline body (1) is fixed mounting keeps off ring (18), keep off ring (18) and the laminating of the surface of filter (13) mutually.
6. The drainage pipe with an inner wall cleaning mechanism according to claim 1, wherein: the surface of bull stick (9) is fixed mounting has blade (14), the surface fixed mounting of bull stick (9) has brush (15), brush (15) are rotated on the surface of filter (13) and are connected.
7. The drainage pipe with an inner wall cleaning mechanism according to claim 6, wherein: the blade (14) is positioned right above the brush (15), and the sewage outlet (2) is positioned right below the blade (14).
8. The method of using a drain pipe with an inner wall cleaning mechanism according to any one of claims 1, comprising the steps of:
s1: when the water flow passes through the position of the filter plate (13), sundries in the water flow can be crushed by the blade (14), so that the sundries are prevented from accumulating on the surface of the filter plate (13) to cause blockage;
s2: after sundries are crushed, under the action of the hairbrush (15), the hairbrush (15) can clean the surface of the filter plate (13), so that the filter plate (13) is prevented from being blocked by tiny sundries, and the normal use of a drain pipe is prevented from being influenced;
s3: sundries are discharged out of the pipeline body (1) through the sewage outlet (2), so that the sundries cannot be accumulated in the pipeline body (1);
s4: the motor (8) is turned on, the output end of the motor (8) drives the rotating rod (9) to rotate, the rotating rod (9) drives the connecting rod (11) to rotate the rotating rod (9), and then the scraping plate (12) scrapes on the inner wall of the pipeline body (1) under the action of the connecting rod (11), so that the inner wall of the pipeline body (1) can be cleaned;
s5: when the attachments fall, under the action of the spiral blades (10), the attachments can be driven to the position of the water outlet (3), so that the interior of the pipeline can be cleaned;
s6: the bolt (7) is loosened from the screw hole (5), the cover plate (6) is separated from the pipeline body (1), the cover plate (6) is taken down from the pipeline body (1), then the cover plate (6) drives the rotating rod (9) to be pulled out from the interior of the pipeline body (1), and the rotating rod (9) drives the spiral blade (10), the scraping plate (12) and the filter plate (13) to be taken out from the interior of the pipeline body (1), so that personnel can maintain the spiral blade (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410183380.0A CN117846100A (en) | 2024-02-19 | 2024-02-19 | Drainage pipeline with inner wall cleaning mechanism and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410183380.0A CN117846100A (en) | 2024-02-19 | 2024-02-19 | Drainage pipeline with inner wall cleaning mechanism and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117846100A true CN117846100A (en) | 2024-04-09 |
Family
ID=90538425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410183380.0A Withdrawn CN117846100A (en) | 2024-02-19 | 2024-02-19 | Drainage pipeline with inner wall cleaning mechanism and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117846100A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119981106A (en) * | 2025-04-15 | 2025-05-13 | 中交一公局集团华中工程有限公司 | Stability control structure and method for high-fill ski track with large slopes |
-
2024
- 2024-02-19 CN CN202410183380.0A patent/CN117846100A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119981106A (en) * | 2025-04-15 | 2025-05-13 | 中交一公局集团华中工程有限公司 | Stability control structure and method for high-fill ski track with large slopes |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20240409 |