CN110670652A - Dredger accessory capable of guaranteeing normal transportation of mud conveying pipe based on centrifugal rotation - Google Patents
Dredger accessory capable of guaranteeing normal transportation of mud conveying pipe based on centrifugal rotation Download PDFInfo
- Publication number
- CN110670652A CN110670652A CN201910971973.2A CN201910971973A CN110670652A CN 110670652 A CN110670652 A CN 110670652A CN 201910971973 A CN201910971973 A CN 201910971973A CN 110670652 A CN110670652 A CN 110670652A
- Authority
- CN
- China
- Prior art keywords
- conveying pipe
- mud conveying
- pipe body
- mud
- dredger
- 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.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/8833—Floating installations
- E02F3/885—Floating installations self propelled, e.g. ship
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
- E02F3/9225—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel with rotating cutting elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The utility model provides a guarantee dredger accessory of defeated mud pipe normal transportation based on centrifugation is rotated, the lower extreme of defeated mud pipe body runs through and extends to the below fixed mounting of reamer body has fixed suction rod, the one end fixed mounting that defeated mud pipe was kept away from to fixed suction rod has the suction ball, the low side fixed mounting of defeated mud pipe body has the stirring frame, the inside upper end fixed mounting of stirring frame has the connecting rod, the lower extreme fixed mounting of connecting rod has the hinge bar, it has the counter weight ball to articulate between two symmetrical hinge bars. Through the connecting rod, the cooperation of hinge bar and counter weight ball is used, can make things convenient for effectual alga to be smashed with earth mixture, avoided the earth conglomeration or the caking after the mixture with the alga to block up the inside at defeated mud pipe body, cause unable the most efficient mud after will smashing to transport the another side, still avoided defeated mud pipe body to block up the back simultaneously, need the staff to launch the sewer or consume great manpower and material resources and transport it to the bank mediation, simplified work step.
Description
Technical Field
The invention relates to the technical field of ocean engineering, in particular to a dredger accessory capable of guaranteeing normal transportation of a mud conveying pipe based on centrifugal rotation.
Background
The dredger is widely used for cleaning or transferring undersea silt so as to be used for building an offshore tunnel or an artificial island, but the conventional twisted suction head of the twisted suction dredger contains a large amount of algae or kelp and the like, and because the marine organisms have certain adhesiveness after being smashed and are mixed with silt in the dredging process, the marine organisms are easily blocked inside a mud conveying pipe body, the internal blockage of the mud conveying pipe body is easily caused, or the marine organisms are attached inside the mud conveying pipe body, the mud cannot be conveyed to another place at the maximum efficiency, and unnecessary troubles are brought to constructors.
Disclosure of Invention
Technical scheme (I)
In order to achieve the purpose of preventing the mud conveying pipe body from being blocked, the invention provides the following technical scheme: a dredger accessory capable of guaranteeing normal transportation of a mud conveying pipe based on centrifugal rotation comprises a mud conveying pipe body and a reamer body, wherein the lower end of the mud conveying pipe body penetrates through and extends to the lower part of the reamer body, a fixed suction rod is fixedly installed below the reamer body, a suction ball is fixedly installed at one end, away from the mud conveying pipe, of the fixed suction rod, a stirring frame is fixedly installed at the lower end of the mud conveying pipe body, a connecting rod is fixedly installed at the upper end inside the stirring frame, a connecting rod is fixedly installed at the lower end of the connecting rod, and a counterweight ball is hinged between two symmetrical hinge rods;
the reamer is characterized in that cutters are hinged to two sides of the upper end of the reamer body through hinge columns respectively, crushing cutters are fixedly mounted on two sides of the lower end of the reamer body respectively, rotary cutters are movably mounted on the reamer body, and water blocking pieces are fixedly mounted on the outer surfaces of the rotary cutters.
Furthermore, the fixed suction rod is positioned on two sides of the mud conveying pipe body, the fixed suction rod is in an inclined state, the fixed suction rod above inclines upwards, and the fixed suction rod below inclines downwards, so that the mud and sand are sucked in all directions.
Furthermore, the two symmetrical hinged rods are elastically connected through a telescopic spring.
Furthermore, the lower end of the mud conveying pipe body is movably installed with the reamer body through a sealing ring, the mud conveying pipe body is provided with two sections, the mud conveying pipe body positioned at the lower end of the reamer body is fixedly installed with the sealing ring, and the lower end of the mud conveying pipe body positioned at the upper end is movably installed with the sealing ring, so that when the reamer body rotates, the mud conveying pipe body at the lower end can be driven to rotate, and the mud conveying pipe body positioned at the upper end of the sealing ring does not rotate.
Furthermore, the cutter is formed by assembling an upper cutter and a lower cutter, and the upper cutter and the lower cutter are arranged in a staggered manner from front to back.
(II) advantageous effects
Compared with the prior art, the invention provides a dredger accessory capable of guaranteeing normal transportation of a mud conveying pipe based on centrifugal rotation, which has the following beneficial effects:
1. this dredge accessory based on defeated mud pipe normal transportation is guaranteed in centrifugation rotation, through the connecting rod, the cooperation of hinge bar and counter weight ball is used, can make things convenient for effectual alga that will mix with earth to smash, avoided the earth conglobation or the caking after mixing with the alga to block up the inside at defeated mud pipe body, cause unable maximum efficiency will smash the mud transport to the another side, still avoided defeated mud pipe body to block up the back simultaneously, need the staff to launch to dredge or consume great manpower and material resources and dredge it to the bank, work step has been simplified.
2. This dredge accessory based on normal transportation of defeated mud pipe is rotated in centrifugation uses through the cooperation of fixed suction rod and suction ball, and convenient effectual thin silt inhales, and big cubic rubble etc. is smashed by the reamer body again, has avoided the reamer body when excavating some rubbles, when soil property such as sand cobble, because contain the stone of big particle diameter piece in the soil body, defeated mud pipe body smashes the pump courage with the stone at inspiratory in-process, stone, increases wearing and tearing, has reduced the pump efficiency, makes the problem that dredge pump life subtracts short.
3. This guarantee dredger accessory of defeated mud pipe normal transportation based on centrifugation is rotated, through the reamer body when rotating, can drive the flow of rivers, rivers can beat on the manger plate when flowing, drive the rotation of commentaries on classics sword, can effectually give the comminution with some big stones, avoid big stone to get into the reamer originally internally, fixed suction rod can't rub it with the suction ball.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the point A in FIG. 1;
FIG. 3 is a detailed structural diagram of a cutter of the present invention;
FIG. 4 is a schematic view of the connection between the mud pipe body and the sealing ring.
In the figure: 1 mud conveying pipe body, 2 fixed suction rods, 3 suction balls, 4 stirring frames, 5 connecting rods, 6 hinged rods, 7 counterweight balls, 8 telescopic springs, 9 reamer bodies, 901 hinged columns, 902 sealing rings, 10 cutters, 101 upper cutters, 102 lower cutters, 11 crushing cutters, 12 rotary cutters and 13 water retaining sheets.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a dredger fitting for ensuring normal transportation of a mud pipe based on centrifugal rotation includes a mud pipe body 1 and a reamer body 9, wherein a fixed suction rod 2 is fixedly installed at the lower end of the mud pipe body 1 to penetrate through and extend to the lower part of the reamer body 9.
As shown in fig. 4, the lower end of the mud pipe body 1 is movably mounted with the reamer body 9 through a sealing ring 902, the mud pipe body 1 has two sections, the mud pipe body 1 located at the lower end of the reamer body 9 is fixedly mounted with the sealing ring 902, and the lower end of the mud pipe body 1 at the upper end is movably mounted with the sealing ring 902, therefore, when the reamer body 9 rotates, the mud pipe body 1 at the lower end can be driven to rotate, the mud pipe body 1 at the upper end of the sealing ring 902 does not rotate, the fixed suction rods 2 are located at two sides of the mud pipe body 1, the fixed suction rods 2 are in an inclined state, the fixed suction rods 2 above incline upwards, the fixed suction rods 2 below incline downwards, and mainly for omnibearing mud suction, and the suction balls 3 are fixedly mounted at one end of the fixed suction rods 2 far away from the.
Through the cooperation of fixed suction rod 2 and suction ball 3, convenient effectual thin silt is inhaled, and big cubic rubble etc. is smashed by reamer body 9 again, has avoided reamer body 9 when excavating some rubbles, when soil property such as sand cobble, because contain the stone of big particle diameter piece in the soil body, mud conveying pipe body 1 smashes the pump courage with the stone at inspiratory in-process, and the stone breaks the pump courage, increases wearing and tearing, has reduced the pump efficiency, makes dredge pump life subtract weak point.
Defeated mud pipe body 1's low side fixed mounting has stirring frame 4, the inside upper end fixed mounting of stirring frame 4 has connecting rod 5, the lower extreme fixed mounting of connecting rod 5 has hinge bar 6, through connecting rod 5, hinge bar 6 and counter weight ball 7's cooperation is used, can make things convenient for effectual alga to smash with earth mixture, avoided blocking up the inside at defeated mud pipe body 1 with the earth conglobation or caking after the alga mixes, cause unable maximum efficiency's mud transportation to the another side after will smashing, still avoided defeated mud pipe body 1 to block up the back simultaneously, need the staff to descend the sewer or consume great manpower and material resources and transport it to the onshore mediation, work step has been simplified.
The two symmetrical hinged rods 6 are elastically connected through a telescopic spring 8, and a counterweight ball 7 is hinged between the two symmetrical hinged rods 6.
The both sides of reamer body 9 upper end articulate through articulated post 901 respectively have cutter 10, when rotating through reamer body 9, can drive the flow of rivers, and rivers can be beaten on breakwater 13 when flowing, drive the rotation of changeing sword 12, can effectually give the comminution with some big stones, avoid big stone to get into in the reamer body 9, fixed suction rod 2 can't rub it with inhaling ball 3.
The cutter 10 is formed by assembling an upper cutter 101 and a lower cutter 102, the upper cutter 101 and the lower cutter 102 are arranged in a staggered manner from front to back, crushing cutters 11 are respectively fixedly installed on two sides of the lower end of the reamer body 9, a rotary cutter 12 is movably installed on the reamer body 9, and a water blocking sheet 13 is fixedly installed on the outer surface of the rotary cutter 12.
When in use, the utility model is used,
the first step is as follows: the manual operation dredger starts the reamer body 9 to rotate, and after the reamer body 9 rotates, the crushing cutter 11 rotates along with the reamer body to dig out sediment and small stones on the seabed.
The second step is that: because the cutter 10 is composed of the upper cutter and the lower cutter 102, when algae live on sea creatures such as kelp and the like, the algae are wound on the cutter 10, the cutter 10 is arranged obliquely downwards, according to Newton's law of universal gravitation, the algae inevitably fall down due to gravity to drive the upper cutter 101 to rotate downwards, and because the upper cutter 101 and the lower cutter 102 are arranged in a staggered manner from front to back, some of the algae are inevitably cut off, so that the condition that the algae are not excessively wound on the reamer body 9 is ensured, and the algae are crushed.
The third step: when the reamer body 9 rotates, the flowing of water flow around can be driven, the flow velocity of the water flow impacts the water retaining sheet 13, and in addition, when the reamer body 9 rotates, the inertia generated by the rotary cutter 12 can also rotate, so that a plurality of large stones are cut for a small time, and the normal transportation of the mud conveying pipe body 1 is ensured.
The fourth step: because the lower end of the mud conveying pipe body 1 rotates together with the reamer body 9, when the lower end of the mud conveying pipe body 1 rotates, the counterweight ball 7 generates centrifugal force due to the high-speed driving of the counterweight ball 7, the angle of the two symmetrical hinge rods 6 is enlarged and close to each other, and the crushing area is increased when the hinge rods 6 and the counterweight ball 7 rotate.
The fourth step: the fixed suction rod 2 and the suction ball 3 can suck away the crushed mud stone due to the suction force of the mud conveying pipe 1.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a guarantee dredger accessory of defeated mud pipe normal transportation based on centrifugation is rotated, includes defeated mud pipe body (1) and reamer body (9), its characterized in that: the lower end of the mud conveying pipe body (1) penetrates through and extends to the lower part of the reamer body (9) and is fixedly provided with a fixed suction rod (2), one end, far away from the mud conveying pipe (1), of the fixed suction rod (2) is fixedly provided with a suction ball (3), the lower end of the mud conveying pipe body (1) is fixedly provided with a stirring frame (4), the upper end of the inner part of the stirring frame (4) is fixedly provided with a connecting rod (5), the lower end of the connecting rod (5) is fixedly provided with a hinge rod (6), and a counterweight ball (7) is hinged between the two symmetrical hinge rods (6);
the reamer is characterized in that cutters (10) are hinged to two sides of the upper end of the reamer body (9) through hinge columns (901) respectively, crushing cutters (11) are fixedly mounted on two sides of the lower end of the reamer body (9) respectively, a rotary cutter (12) is movably mounted on the reamer body (9), and water blocking pieces (13) are fixedly mounted on the outer surface of the rotary cutter (12).
2. The dredger fitting based on centrifugal rotation for ensuring normal transportation of a mud conveying pipe according to claim 1, wherein: the fixed suction rods (2) are positioned on two sides of the mud conveying pipe body (1), the fixed suction rods (2) are in an inclined state, the fixed suction rods (2) above incline upwards, and the fixed suction rods (2) below incline downwards.
3. The dredger fitting based on centrifugal rotation for ensuring normal transportation of a mud conveying pipe according to claim 1, wherein: the two symmetrical hinged rods (6) are elastically connected through a telescopic spring (8).
4. The dredger fitting based on centrifugal rotation for ensuring normal transportation of a mud conveying pipe according to claim 1, wherein: the lower end of the mud conveying pipe body (1) is movably mounted with the reamer body (9) through a sealing ring (902), the mud conveying pipe body (1) is provided with two sections, the mud conveying pipe body (1) positioned at the lower end of the reamer body (9) is fixedly mounted with the sealing ring (902), and the lower end of the mud conveying pipe body (1) at the upper end is movably mounted with the sealing ring (902).
5. The dredger fitting based on centrifugal rotation for ensuring normal transportation of a mud conveying pipe according to claim 1, wherein: the cutter (10) is formed by assembling an upper cutter (101) and a lower cutter (102), and the upper cutter (101) and the lower cutter (102) are arranged in a staggered mode from front to back.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910971973.2A CN110670652A (en) | 2019-10-14 | 2019-10-14 | Dredger accessory capable of guaranteeing normal transportation of mud conveying pipe based on centrifugal rotation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910971973.2A CN110670652A (en) | 2019-10-14 | 2019-10-14 | Dredger accessory capable of guaranteeing normal transportation of mud conveying pipe based on centrifugal rotation |
Publications (1)
Publication Number | Publication Date |
---|---|
CN110670652A true CN110670652A (en) | 2020-01-10 |
Family
ID=69082261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910971973.2A Pending CN110670652A (en) | 2019-10-14 | 2019-10-14 | Dredger accessory capable of guaranteeing normal transportation of mud conveying pipe based on centrifugal rotation |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110670652A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111213452A (en) * | 2020-01-14 | 2020-06-02 | 曾运科 | Build stalk ploughshare compaction device |
CN111472405A (en) * | 2020-05-11 | 2020-07-31 | 宁波市庞荣机械科技有限公司 | Machine head for cleaning sludge at bottom of riverbed |
CN112411652A (en) * | 2020-11-06 | 2021-02-26 | 中国港湾工程有限责任公司 | Dredging device |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4123858A (en) * | 1971-07-06 | 1978-11-07 | Batchelder George W | Versatile submersible device for dredging or other underwater functions |
CN104032787A (en) * | 2014-06-12 | 2014-09-10 | 山东海领船舶机械有限公司 | Cutter-suction device |
CN205288651U (en) * | 2016-01-21 | 2016-06-08 | 西安科技大学 | Building construction waste's recycle device |
CN206580570U (en) * | 2016-10-11 | 2017-10-24 | 天津森普美净环保科技有限公司 | A kind of daily life sewage disposal device |
CN207905003U (en) * | 2018-02-01 | 2018-09-25 | 胡爱国 | A kind of hydraulic engineering channel cleanout device |
DE102017119981A1 (en) * | 2017-08-31 | 2019-02-28 | Gmb Gmbh | Apparatus and method for removing deposits from the bottom of a body of water |
CN209384303U (en) * | 2018-12-13 | 2019-09-13 | 中铁工程装备集团有限公司 | A kind of underwater open caisson development machine |
-
2019
- 2019-10-14 CN CN201910971973.2A patent/CN110670652A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4123858A (en) * | 1971-07-06 | 1978-11-07 | Batchelder George W | Versatile submersible device for dredging or other underwater functions |
CN104032787A (en) * | 2014-06-12 | 2014-09-10 | 山东海领船舶机械有限公司 | Cutter-suction device |
CN205288651U (en) * | 2016-01-21 | 2016-06-08 | 西安科技大学 | Building construction waste's recycle device |
CN206580570U (en) * | 2016-10-11 | 2017-10-24 | 天津森普美净环保科技有限公司 | A kind of daily life sewage disposal device |
DE102017119981A1 (en) * | 2017-08-31 | 2019-02-28 | Gmb Gmbh | Apparatus and method for removing deposits from the bottom of a body of water |
CN207905003U (en) * | 2018-02-01 | 2018-09-25 | 胡爱国 | A kind of hydraulic engineering channel cleanout device |
CN209384303U (en) * | 2018-12-13 | 2019-09-13 | 中铁工程装备集团有限公司 | A kind of underwater open caisson development machine |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111213452A (en) * | 2020-01-14 | 2020-06-02 | 曾运科 | Build stalk ploughshare compaction device |
CN111472405A (en) * | 2020-05-11 | 2020-07-31 | 宁波市庞荣机械科技有限公司 | Machine head for cleaning sludge at bottom of riverbed |
CN111472405B (en) * | 2020-05-11 | 2020-11-24 | 日照市东港区水务集团有限公司 | Machine head for cleaning sludge at bottom of riverbed |
CN112411652A (en) * | 2020-11-06 | 2021-02-26 | 中国港湾工程有限责任公司 | Dredging device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110670652A (en) | Dredger accessory capable of guaranteeing normal transportation of mud conveying pipe based on centrifugal rotation | |
CN105926701B (en) | Harbour sludge treatment device and its processing method | |
CN207863014U (en) | Cutter suction dredger environment-protective desilting cutter | |
CN211172150U (en) | Hydraulic engineering desilting device | |
CN109469144A (en) | A kind of sludge solidification processing unit | |
CN216275914U (en) | Booster-type ditch silt pull throughs for hydraulic engineering | |
CN106545042A (en) | Automatic dredging machine under water | |
CN110258703A (en) | Mobile river sludge dredger | |
CN211596985U (en) | Prevent blockking up drain pipe | |
JP2004190421A (en) | Dredger cutter head system | |
CN212926229U (en) | Water conservancy sediment removal device | |
CN113106934A (en) | Silt recycle device for hydraulic engineering | |
JP6964405B2 (en) | Dredging intake structure | |
KR20170005777A (en) | The production of sustainable electricity by continuously generating electricity by using multi-constituent power generation auger inside the winch which is composed of two, and the power winch which is composed at the rear part of the double winch, and at the same time, | |
CN209603220U (en) | A kind of mud-sucking device of dredger | |
CN208669566U (en) | A kind of stainless steel water pump | |
CN110258704A (en) | The application method of mobile river sludge dredger | |
CN207749555U (en) | A kind of underwater refuse grinder for dredger | |
JPH09242113A (en) | Dredging and disposing device | |
CN212835585U (en) | Municipal administration tunnel desilting device | |
CN113175049B (en) | Drainage system design structure of landscape garden | |
JPH09264036A (en) | Dredging and transporting device | |
CN210086338U (en) | Sediment discharging device for hydraulic engineering | |
CN101092819A (en) | Underwater dredging head in type of twisting flying rope | |
CN216108701U (en) | Dredging device for hydraulic engineering |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200110 |
|
RJ01 | Rejection of invention patent application after publication |