CN111980146A - A mediation dross removal mechanism for tunnel blocks up drain pipe - Google Patents
A mediation dross removal mechanism for tunnel blocks up drain pipe Download PDFInfo
- Publication number
- CN111980146A CN111980146A CN202010900231.3A CN202010900231A CN111980146A CN 111980146 A CN111980146 A CN 111980146A CN 202010900231 A CN202010900231 A CN 202010900231A CN 111980146 A CN111980146 A CN 111980146A
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- Prior art keywords
- drill bit
- transmission shaft
- crushing
- tunnel
- wall
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- 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.)
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- 239000000428 dust Substances 0.000 claims abstract description 44
- 230000005540 biological transmission Effects 0.000 claims abstract description 40
- 239000013078 crystal Substances 0.000 claims abstract description 32
- 238000000227 grinding Methods 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 230000003019 stabilising effect Effects 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000000087 stabilizing effect Effects 0.000 description 11
- 238000002425 crystallisation Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000008025 crystallization Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
Images
Classifications
-
- 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
- E03F9/005—Apparatus for simultaneously pushing and rotating a cleaning device carried by the leading end of a cable or an assembly of rods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
A dredging and deslagging device for a tunnel blocked drain pipe is provided with a flow guide cavity on a walking chassis, a motor and a hydraulic motor are arranged on the inner wall of the flow guide cavity, an output shaft of the motor is connected with a crushing transmission shaft, an output shaft of the hydraulic motor is connected with a drill bit transmission shaft, the drill bit transmission shaft is arranged in a hollow crushing transmission shaft, a drill bit is arranged in a drill bit clamping groove at the end part of the transmission shaft, crushing blades are uniformly distributed on the crushing transmission shaft, one end of the flow guide cavity is connected with a cutting guard arm, the other end of the flow guide cavity is communicated with a dust suction pipe through a movable joint, the dust suction pipe is communicated with a dust collection box, an air suction machine is arranged in the dust collection box, and crushed crystal blocks are collected by the dust collection box through the flow guide cavity under the action of the air suction machine to achieve the purpose of, the drainage pipe is enabled to recover the normal use function, so that the structural safety and normal operation of the tunnel are ensured.
Description
Technical Field
The invention belongs to the technical field of tunnel drain pipe blockage treatment devices or equipment, and particularly relates to a dredging and deslagging device for a tunnel blocked drain pipe.
Background
Calcium ions in concrete materials used for tunnel construction are easy to seep out under the flushing of underground water, and after the calcium seeps into a drainage system, the calcium seeps into a drainage system and is in contact with CO in the external environment2Insoluble crystals such as calcium carbonate and the like are easily generated in the reaction, and are gradually accumulated and precipitated on the inner wall of the drainage pipeline due to the small water pressure of a drainage system, the adhesion effect of the wall of the drainage pipeline and the like, so that the drainage pipeline is gradually blocked. The problem of calcium ion seepage crystallization in the tunnel concrete is not only easy to cause failure of a tunnel drainage system, but also can affect the strength of the tunnel concrete and cause the problems of deterioration and breakage of a tunnel lining structure and the like, and the damage is irreversible, so that the damage speed is faster and faster, and the problem needs to be solved urgently. The automatic crystal removing device for dredging the tunnel blocked drain pipe aims at solving the problem and is based on the general principle of gradual progress, safety and stabilityRemoving the target requirement of the blocked crystal blocks in the drain pipe. Meanwhile, in consideration of the hardness of the tunnel crystal block, the longitudinal length and the gradient of a tunnel drain pipe and the like, the de-crystallization dredging device is also specially provided with a cutting crushing device and a cutting auxiliary supporting device so as to improve the working efficiency and the adaptability of the device in the tunnel special pipeline environment.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides the dredging and deslagging device for the tunnel blocked drain pipe, which has the advantages of reasonable design, simple structure, high crystallization removal efficiency, centralized treatment of crushed crystal dust and no environmental pollution.
The technical scheme for solving the technical problems is as follows: a dredging and deslagging device for a tunnel blocking drain pipe is formed by connecting a crystal crushing device arranged in a pipeline and a dust collecting device outside the pipeline;
the crystal crushing device comprises: a flow guide cavity is arranged on the walking chassis, one end of the flow guide cavity is connected with the cutting guard arm, a motor is arranged on the inner wall of the flow guide cavity through a motor fixing frame, a hydraulic motor is arranged on the motor fixing frame on the inner wall of the flow guide cavity, the hydraulic motor is communicated with a hydraulic pump, an output shaft of the motor is connected with a crushing transmission shaft through a gear transmission mechanism, the output shaft of the hydraulic motor is connected with a drill bit transmission shaft, the drill bit transmission shaft is coaxially arranged inside the hollow crushing transmission shaft, a drill bit clamping groove is formed in the end portion of the drill bit transmission shaft, drill bits are arranged in the drill bit clamping groove, crushing blades are uniformly distributed on the;
the dust collecting device is as follows: the other end of the diversion cavity is communicated with a dust collection pipe through a movable joint, the dust collection pipe is communicated with a dust collection box, an air suction machine is arranged in the dust collection box, and a drill extends out of the end part of the cutting protection arm.
The drill bit is a hollow conical drill bit, and the infrared sensor is arranged in the hollow part of the drill bit and is electrically connected with the control system.
The outer wall of the cutting guard arm is uniformly provided with 2 groups of tube wall stabilizing devices, each tube wall stabilizing device is formed by connecting a telescopic hydraulic support rod, a rubber protecting pad and a tube wall stabilizing block, one end of each telescopic hydraulic support rod is arranged on the outer wall of the cutting guard arm, the other end of each telescopic hydraulic support rod is provided with the tube wall stabilizing block, the rubber protecting pads are arranged on the tube wall stabilizing blocks, and the telescopic hydraulic support rods are electrically connected with a control system.
The included angle between the central line of the telescopic hydraulic support rod and the central line of the cutting guard arm is 30-60 degrees.
The cutting guard arm is a hollow circular pipeline, and the inner wall of one end, close to the drill bit, of the cutting guard arm is processed into a conical structure.
The inner wall of the cutting guard arm is uniformly provided with grinding bulges.
The grinding bulge of the invention is of a conical structure.
The crushing transmission shaft is provided with helical blades.
The rotating speed of the crushing transmission shaft is less than that of the drill bit transmission shaft.
Compared with the prior art, the invention has the following advantages:
aiming at the characteristics of long crystallization area of crystallization precipitates, high hardness of scale deposits, hidden operation space and the like in the environment of a special pipeline of a tunnel, the invention provides the detachable dredging mechanical drill bit, the dust transmission pipeline and the dust collecting device, which can realize physical dredging of a blocked pipeline in the environment of long concealment, have simple operation and high efficiency, and have no pollution to the environment due to centralized treatment of crystal dust. The device is at first through telescopic triangle drill bit, the annular cutting protecting arm carries out the breakage of great scale to the crystal block, then advance through equipment, the toper structure by the protecting arm front end is with broken crystal block gathering, the effect of the spiral grinder at rethread drill bit rear portion, the crystal block after smashing gets into inside the equipment, under the bellied dual function of grinding of outstanding in spiral grinder and cavity, the crystal block is smashed, then under the effect of air suction machine, the dust is through the water conservancy diversion chamber, the dust absorption pipe, collect in the dust collecting tank at last, thereby reach the purpose that the tunnel crystallization blockked up the pipeline of mediation, make the drain pipe resume normal use function, in order to guarantee the structure safety and the normal operation in tunnel.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is a schematic view showing the structure of the crystal pulverizing apparatus shown in FIG. 1.
Fig. 3 is a sectional view a-a of fig. 2.
In the figure: 1. a drill bit clamping groove; 2. an infrared sensor; 3. a drill bit; 4. a telescopic hydraulic support arm; 5. a rubber protection pad; 6. a pipe wall stabilizing block; 7. cutting the guard arm; 8. a gear transmission mechanism; 9. a motor; 10. a motor fixing frame; 11. a motor fixing frame; 12. a hydraulic motor; 13. a flow guide cavity; 14. a movable joint; 15. a walking chassis; 16. a drill bit drive shaft; 17. grinding the bumps; 18. crushing the transmission shaft; 19. crushing the leaves; 20. a dust collection pipe; 21. an air suction machine; 22. a dust collection box.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the present invention is not limited to these examples.
Example 1
In fig. 1 to 3, the dredging and deslagging device for the tunnel blocking drain pipe according to the invention is formed by connecting a crystal crushing device arranged in a pipeline and a dust collecting device outside the pipeline; after crystal precipitates in the pipeline are cut and ground into dust by the crystal crushing device, the dust enters the dust collection pipe through the guide groove under the action of the air suction machine, and is finally collected in the dust collection box.
The crystallization crushing device is formed by connecting a drill clamping groove 1, an infrared sensor 2, a drill 3, a telescopic hydraulic supporting arm 4, a rubber protection pad 5, a pipe wall stabilizing block 6, a cutting protection arm 7, a gear transmission mechanism 8, a motor 9, a motor fixing frame 10, a motor fixing frame 11, a hydraulic motor 12, a flow guide cavity 13, a movable joint 14, a walking chassis 15, a drill transmission shaft 16, a grinding protrusion 17, a crushing transmission shaft 18 and crushing blades 1, wherein the walking chassis drives the device to move in a pipeline. Install water conservancy diversion chamber 13 on walking chassis 15, water conservancy diversion chamber 13 is hollow structure, and the inside right-hand member in water conservancy diversion chamber 13 is the arc convergence, forms smooth chamber surface, prevents that the dust from piling up at the inside dead angle in water conservancy diversion chamber 13, damaging whole device. One end of the diversion cavity 13 is connected with the cutting guard arm 7, the cutting guard arm 7 is a hollow circular pipeline, the inner wall of one end of the cutting guard arm 7 close to the drill bit 3 is processed into a conical structure, the structure reduces the contact area of the cutting guard arm 7 and a pipeline crystal block, and meanwhile, the sharp conical structure can also play a certain cutting role on the crystal block on the pipe wall. The inner wall of the diversion cavity 13 is fixedly connected with a motor fixing frame 10 and a motor fixing frame 11 through threaded fastening connecting pieces, the motor fixing frame 10 is fixedly connected with a motor 9 through threaded fastening connecting pieces, the motor fixing frame 11 is fixedly connected with a hydraulic motor 12 through threaded fastening connecting pieces, the hydraulic motor 12 is communicated with a hydraulic pump, an output shaft of the motor 9 is connected with a crushing transmission shaft 18 through a gear transmission mechanism 8, an output shaft of the hydraulic motor 12 is connected with a drill bit transmission shaft 16, the drill bit transmission shaft 16 is coaxially installed inside the hollow crushing transmission shaft 18, and further, the rotating speed of the crushing transmission shaft 18 is smaller than that of the drill bit transmission shaft 16. The walking chassis 15, the motor 9, the hydraulic pump and the hydraulic motor 12 are electrically connected with a control system, and the control system controls the walking chassis 15 to move, controls the rotation of the motor 9, and supplies liquid to the hydraulic motor through the hydraulic pump, so that the walking chassis is a product sold in the market.
The end part of the drill bit transmission shaft 16 is fixedly connected with a drill bit clamping groove 1 through a threaded fastening connecting piece, the drill bit 3 is arranged in the drill bit clamping groove 1, and the drill bit 3 extends out of the end part of the cutting protection arm 7. The drill bit 3 is a hollow conical drill bit, and the infrared sensor 2 is arranged in the hollow part of the drill bit 3 and is electrically connected with a control system. The rotation of the hydraulic motor 12 drives the bit drive shaft 16 and the bit drive shaft 16 to rotate the bit 3, thereby crushing and cutting the crystal. Crushing blades 19 are uniformly arranged on the crushing transmission shaft 18, and further, the crushing blades 19 of the embodiment are helical blades. The rotation of motor 9 drives and smashes axis of rotation 18 and rotates, smashes blade 19 and further smashes the crystal that drill bit 3 cut down, and cutting armguard 7 inner wall equipartition welded fastening has grinding protrusion 17, and grinding protrusion 17 cooperation is smashed blade 19 and is ground the crystal, and grinding protrusion 17 is the toper structure, guarantees that the crystal is smashed as far as and makes things convenient for dust collection device to collect. 2 group's pipe wall stabilising arrangement are installed to the equipartition on the 7 outer walls of cutting armguard, pipe wall stabilising arrangement constitute by scalable hydraulic support pole 4, rubber protection pad 5, the connection of pipe wall stabilizing block 6, the one end of scalable hydraulic support pole 4 is passed through screw fastening connecting piece fixed connection and is installed on 7 outer walls of cutting armguard, pipe wall stabilizing block 6 is installed to the other end, install rubber protection pad 5 on the pipe wall stabilizing block 6, scalable hydraulic support pole 4 detects after having the crystallizing block at infrared sensor 2, send out the instruction by control system and outwards stretch out, make rubber protection pad 5 prop on the pipe inner wall, guarantee the stability of whole device, make drill bit 3 at the drilling cutting in-process steady as far as possible. The rubber protection pad 5 increases the contact surface and the frictional force of the pipe wall stabilizing device and the inner wall of the pipe, protects the inner wall of the pipe simultaneously, prevents metal scratches, prolongs the service life of the pipe, and in order to save space and enable the whole device to walk unhindered, the included angle between the central line of the telescopic hydraulic support rod 4 and the central line of the cutting protection arm 7 is 30-60 degrees. The telescopic hydraulic support rod 4 is electrically connected with a control system.
The dust collecting device is formed by connecting a dust suction pipe 20, an air suction machine 21 and a dust collection box 22; the other end of the diversion cavity 13 is communicated with a dust suction pipe 20 through a movable joint 14, the dust suction pipe 20 is communicated with a dust collection box 22, an air suction machine 21 is arranged in the dust collection box 22, the air suction machine 21 provides certain suction for the dust collection box 22 to form a negative pressure environment, and crushed crystal blocks in the cutting and crushing device can more easily enter the dust collection box 22.
The working principle of the invention is as follows:
the walking chassis 15 drives the whole device to walk in a pipeline, the infrared sensor 2 feeds back to a control system when detecting a crystal block, the control system controls the telescopic hydraulic supporting arm 4 to extend out, the walking chassis 15 slowly walks, meanwhile, the control system controls the hydraulic pump to supply liquid to the hydraulic motor 12, the hydraulic motor 12 drives the drill bit 3 to carry out primary cutting and crushing on the crystal, the cone-shaped structure at the front end of the cutting protective arm 7 carries out shoveling on the crystal block in the advancing process, the crushed crystal block enters the inner cavity of the cutting protective arm 7, the control motor 9 rotates to drive the crushing blades 19 on the crushing transmission shaft 18 to rotate to further crush the crystal block, the grinding bulge 17 carries out further grinding and crushing, the air suction machine 21 is started, the crushed crystal block enters the dust collection box 22 through the dust collection pipe 20 to be collected, after the pipeline blockage is removed, the infrared sensor 2 feeds back to the control system, the control system controls, The traveling chassis 15 recovers the forward speed.
Claims (9)
1. The utility model provides a mediation dross removal mechanism for tunnel blocking drain pipe which characterized in that: the device is formed by connecting a crystal crushing device arranged in a pipeline and a dust collecting device outside the pipeline;
the crystal crushing device comprises: a flow guide cavity (13) is arranged on a walking chassis (15), one end of the flow guide cavity (13) is connected with a cutting guard arm (7), a motor (9) is arranged on the inner wall of the flow guide cavity (13) through a motor fixing frame (10), a hydraulic motor (12) is arranged on a motor fixing frame (11) on the inner wall of the flow guide cavity (13), the hydraulic motor (12) is communicated with a hydraulic pump, an output shaft of the motor (9) is connected with a crushing transmission shaft (18) through a gear transmission mechanism (8), an output shaft of the hydraulic motor (12) is connected with a drill bit transmission shaft (16), the drill bit transmission shaft (16) is coaxially arranged inside the hollow crushing transmission shaft (18), a drill bit clamping groove (1) is arranged at the end part of the drill bit transmission shaft (16), a drill bit (3) is arranged in the drill bit clamping groove (1), crushing blades (19) are uniformly arranged on, The motor (9), the hydraulic pump and the hydraulic motor (12) are electrically connected with the control system;
the dust collecting device is as follows: the other end of the diversion cavity (13) is communicated with a dust absorption pipe (20) through a movable joint (14), the dust absorption pipe (20) is communicated with a dust collection box (22), an air suction machine (21) is arranged in the dust collection box (22), and the drill bit (3) extends out of the end part of the cutting protection arm (7).
2. The dredging deslagging device for the tunnel blocking drain pipe according to claim 1, wherein: the drill bit (3) is a hollow conical drill bit, and the infrared sensor (2) is arranged in the hollow part of the drill bit (3) and is electrically connected with the control system.
3. The dredging deslagging device for the tunnel blocking drain pipe according to claim 1, wherein: cutting armguard (7) outer wall on the equipartition be provided with 2 groups pipe wall stabilising arrangement, pipe wall stabilising arrangement constitute by scalable hydraulic pressure bracing piece (4), rubber protection pad (5), pipe wall steady piece (6) connection, the one end of scalable hydraulic pressure bracing piece (4) sets up on cutting armguard (7) outer wall, the other end is provided with pipe wall steady piece (6), be provided with rubber protection pad (5) on pipe wall steady piece (6), scalable hydraulic pressure bracing piece (4) are connected with the control system electricity.
4. The dredging deslagging device for the tunnel blocking drain pipe of claim 3, wherein: the included angle between the central line of the telescopic hydraulic support rod (4) and the central line of the cutting guard arm (7) is 30-60 degrees.
5. The dredging deslagging device for the tunnel blocking drain pipe according to claim 1, wherein: the cutting guard arm (7) is a hollow circular pipeline, and the inner wall of one end, close to the drill bit (3), of the cutting guard arm (7) is processed into a conical structure.
6. A dredging and deslagging device for tunnel blocking drains according to claim 5, wherein: the inner wall of the cutting guard arm (7) is uniformly provided with grinding bulges (17).
7. The dredging deslagging device for the tunnel blocking drain pipe of claim 6, wherein: the grinding bulge (17) is of a conical structure.
8. A pull-through cleaner for tunnel-blocking drains as claimed in claim 1. The method is characterized in that: the crushing transmission shaft (18) is provided with helical blades.
9. A pull-through cleaner for tunnel-blocking drains as claimed in claim 1. The method is characterized in that: the rotating speed of the crushing transmission shaft (18) is less than that of the drill bit transmission shaft (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010900231.3A CN111980146A (en) | 2020-08-31 | 2020-08-31 | A mediation dross removal mechanism for tunnel blocks up drain pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010900231.3A CN111980146A (en) | 2020-08-31 | 2020-08-31 | A mediation dross removal mechanism for tunnel blocks up drain pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111980146A true CN111980146A (en) | 2020-11-24 |
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ID=73448201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010900231.3A Pending CN111980146A (en) | 2020-08-31 | 2020-08-31 | A mediation dross removal mechanism for tunnel blocks up drain pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN111980146A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705533A (en) * | 2021-01-25 | 2021-04-27 | 成都和拓土木工程有限公司 | Blind pipe dredging and detecting integrated equipment |
| CN112742808A (en) * | 2020-12-22 | 2021-05-04 | 深圳市华胜建设工程有限公司 | Sponge city rain flood drainage pipe inner wall cleaning device |
| CN112845429A (en) * | 2021-01-14 | 2021-05-28 | 贵州大学 | Crystal removing and blockage removing device for tunnel drainage pipeline |
| CN112918965A (en) * | 2021-03-02 | 2021-06-08 | 上海市政工程设计研究总院（集团）有限公司 | Automatic drainage guide device for material pit |
| CN113482717A (en) * | 2021-07-13 | 2021-10-08 | 重庆交通大学 | Device for removing crystals on inner wall of pipeline in tunnel by using freezing method and using method |
| CN114753481A (en) * | 2022-04-18 | 2022-07-15 | 重庆沣腾建材有限公司 | Drainage pipe repairs with clearing away jam device fast |
-
2020
- 2020-08-31 CN CN202010900231.3A patent/CN111980146A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742808A (en) * | 2020-12-22 | 2021-05-04 | 深圳市华胜建设工程有限公司 | Sponge city rain flood drainage pipe inner wall cleaning device |
| CN112845429A (en) * | 2021-01-14 | 2021-05-28 | 贵州大学 | Crystal removing and blockage removing device for tunnel drainage pipeline |
| CN112845429B (en) * | 2021-01-14 | 2022-08-12 | 贵州大学 | Crystal removing and blockage removing device for tunnel drainage pipeline |
| CN112705533A (en) * | 2021-01-25 | 2021-04-27 | 成都和拓土木工程有限公司 | Blind pipe dredging and detecting integrated equipment |
| CN112705533B (en) * | 2021-01-25 | 2023-06-20 | 成都和拓土木工程有限公司 | Blind pipe dredging and detecting integrated equipment |
| CN112918965A (en) * | 2021-03-02 | 2021-06-08 | 上海市政工程设计研究总院（集团）有限公司 | Automatic drainage guide device for material pit |
| CN113482717A (en) * | 2021-07-13 | 2021-10-08 | 重庆交通大学 | Device for removing crystals on inner wall of pipeline in tunnel by using freezing method and using method |
| CN113482717B (en) * | 2021-07-13 | 2022-04-22 | 重庆交通大学 | Device for removing crystals on inner wall of pipeline in tunnel by using freezing method and using method |
| CN114753481A (en) * | 2022-04-18 | 2022-07-15 | 重庆沣腾建材有限公司 | Drainage pipe repairs with clearing away jam device fast |
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