CN106193157A - Trailing suction hopper dredger drag head - Google Patents
Trailing suction hopper dredger drag head Download PDFInfo
- Publication number
- CN106193157A CN106193157A CN201610784493.1A CN201610784493A CN106193157A CN 106193157 A CN106193157 A CN 106193157A CN 201610784493 A CN201610784493 A CN 201610784493A CN 106193157 A CN106193157 A CN 106193157A
- Authority
- CN
- China
- Prior art keywords
- drag head
- rake
- water
- main
- rake teeth
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 230000007704 transition Effects 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000005525 hole transport Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000004080 punching Methods 0.000 claims 1
- 239000004576 sand Substances 0.000 abstract description 5
- 210000000515 tooth Anatomy 0.000 description 40
- 239000002689 soil Substances 0.000 description 7
- 239000007921 spray Substances 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
- E02F3/9262—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with jets
Abstract
Trailing suction hopper dredger drag head of the present invention relates to a kind of dredging work equipment.Its purpose is to provide and a kind of can strengthen the ability of breaking ground, improve the trailing suction hopper dredger drag head of the yield dredging closely knit fine sand.Trailing suction hopper dredger drag head of the present invention includes main drag head, main drag head is rotatably supported in rake arms, it is provided with hydraulic cylinder between rake arms and main drag head, it is fixed with into water manifold in rake arms, the water inlet of water inlet manifold connects high-pressure flush pipeline, the outlet of water inlet manifold connects delivery hose, delivery hose includes front water hose and rear water hose, front water hose connects the leading water chamber being arranged on main drag head, leading water chamber connects water inlet pipe, water inlet pipe lower end connects horizontal aqueduct and longitudinal aqueduct, laterally aqueduct and longitudinal aqueduct communicate, and it is staggered on the downside of main drag head, laterally connect on aqueduct and have front-seat high-pressure nozzle, on longitudinal aqueduct, there is longitudinal high-pressure shower nozzle each connection, rake teeth group it is also equipped with on main drag head.
Description
Technical field
The present invention relates to a kind of dredging work equipment, particularly relate to a kind of drag head for trailing suction hopper dredger.
Background technology
The working method of trailing suction hopper dredger is to navigate by water while dredging at present, respectively installs a drag head in the both sides of ship.
During dredger navigation, drive drag head to move forward, drag head excavate soil under water, then by the suction of dredge pump, along mud
Pipe sucks spoil hopper mud, resails to mud dumping area territory and carry out throwing mud after cabin is full.The drag head of the most existing dredger, such as figure
Shown in 9 and Figure 10, it is typically provided two row's rake teeths (i.e. front-seat rake teeth and heel row rake teeth) and two row's high-pressure nozzles (i.e. front-seat high pressure spray
Head and heel row high-pressure nozzle), during work, High-Pressure Water penetrates from shower nozzle, and the sand that will harden rushes broken loose, then cutting by rake teeth
Cutting, die-cut interaction makes silt particle easily suspend, it is simple to suck mud pipe, improves dredging efficiency.But it is due to when dredging, a certain
The soil at place respectively can only be washed away once by front and rear row high-pressure flush, breaks ground indifferent, is especially excavating closely knit thin sandy soil
Time, it is impossible to effectively crushing soil, dredging efficiency reduces.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of can strengthen the ability of breaking ground, improve and dredge the product of closely knit fine sand
The trailing suction hopper dredger drag head of amount.
Trailing suction hopper dredger drag head of the present invention, including main drag head, main drag head is rotatably supported in rake arms, described rake arms and master
Being provided with hydraulic cylinder between drag head, rake arms is fixed with into water manifold, the water inlet of water inlet manifold connects high-pressure flush pipeline, enters
Each outlet of water manifold connects delivery hose respectively, and delivery hose includes front water hose and rear water hose, and front feedwater is soft
Pipe connects the leading water chamber being arranged on main drag head, and leading water chamber connects has several water inlet pipes, water inlet pipe lower end to stretch
Entering on the downside of main drag head, water inlet pipe lower end connects horizontal aqueduct and longitudinal aqueduct, horizontal aqueduct and longitudinal aqueduct
Communicate, and be staggered on the downside of main drag head, horizontal aqueduct connects and has multiple front-seat high-pressure nozzle, each on longitudinal aqueduct
Connecting and have multiple longitudinal high-pressure shower nozzle, rear water hose is supplied water to heel row high-pressure nozzle by rear diversion cavity, on main drag head also
Being provided with rake teeth group, rake teeth group includes multiple rake teeth.
Trailing suction hopper dredger drag head of the present invention, the rake teeth in wherein said rake teeth group, front-seat high-pressure nozzle, heel row high pressure spray
Head and the equal forward downward of longitudinal high-pressure shower nozzle tilt, and identical with the angle of horizontal direction.
Trailing suction hopper dredger drag head of the present invention, wherein said angle is 30 °～60 °.
Trailing suction hopper dredger drag head of the present invention, wherein said rake arms rear portion is provided with rotating shaft, and rotating shaft is used for supporting main drag head,
Rake arms rear portion is provided with the protective cover matched with main drag head external surface shape, the agent structure of rake arms welded by multi-sheets and
Becoming, rake arms is internally provided with hollow cavity, and hollow cavity is externally connected to dredge pump in rake arms, and rake arms is offered near main drag head side
Having row's mud-suction hole, mud-suction hole is connected with the hollow cavity in rake arms, and the front end of rake arms is machined with connecting hole, and connecting hole is used for
Connect the pipeline transporting earth.
Trailing suction hopper dredger drag head of the present invention, wherein said rake arms top is provided with support seat, and water inlet manifold is fixed on and props up
On support seat, support seat being further fixed on front hydraulic cylinder and fixes seat, front hydraulic cylinder is fixed seat and is rotationally connected with hydraulic cylinder, before hydraulic cylinder
End is rotationally connected with hydraulic cylinder bearing, and hydraulic cylinder bearing is fixed on rear hydraulic cylinder and fixes on seat, and rear hydraulic cylinder is fixed seat and is arranged on
On main drag head.
Trailing suction hopper dredger drag head of the present invention, wherein said rake teeth group includes the rake teeth that multiple shape is identical, each rake
Tooth entirety is wedge shaped, and including head, transition part and root, wherein head includes main work surface and the subtask that angle is obtuse angle
Face, main work surface is positioned at inside rake teeth, is connected with the inwall of transition part, and the inwall of transition part is the cambered surface bent laterally, mistake
Crossing the outer wall auxiliary connection work surface in portion, the outer wall of transition part is divided into two sections, be wherein directly connected to subtask face for tapered plane,
Being the arc-plane of inside lateral bend above tapered plane, the root of rake teeth is machined with mounting groove.
Trailing suction hopper dredger drag head of the present invention, wherein said rake teeth group includes front-seat rake teeth and heel row rake teeth, front-seat rake teeth
The middle part on the downside of main drag head and rear portion is laid respectively at heel row rake teeth.
Trailing suction hopper dredger drag head difference from prior art of the present invention is that trailing suction hopper dredger drag head of the present invention exists
Improve on the basis of existing drag head, change the situation that tradition drag head two row's shower nozzles the most arranged side by side carry out spraying water,
Add intensity and the area of water spray.The present invention draws some water inlet pipes in the leading water chamber be connected to High-Pressure Water, enters
Water pipe extend on the downside of main drag head and connects horizontal aqueduct and longitudinal aqueduct, horizontal aqueduct and longitudinal aqueduct and connects respectively
Connecing front-seat high-pressure nozzle and longitudinal high-pressure shower nozzle, transverse and longitudinal shower nozzle is arranged in a crossed manner, the area and impact that increasing sprays water with high pressure covers
The intensity on ground, also improves cutting depth and the width of rake teeth.Trailing suction hopper dredger drag head of the present invention operationally can be abundant
Break ground, make soil mix with water and siphoned away by dredging tube, be more conducive to dredge the surface of closely knit fine sand, be effectively improved yield, manufacture simultaneously
Easy to use, easily promote.
Below in conjunction with the accompanying drawings the trailing suction hopper dredger drag head of the present invention is described further.
Accompanying drawing explanation
Fig. 1 is the front view of trailing suction hopper dredger drag head of the present invention；
Fig. 2 is the top view of trailing suction hopper dredger drag head of the present invention；
Fig. 3 is the upward view of trailing suction hopper dredger drag head of the present invention；
Fig. 4 is the axonometric chart of trailing suction hopper dredger drag head of the present invention；
Fig. 5 is the axonometric chart at rake teeth upper right visual angle in trailing suction hopper dredger drag head of the present invention；
Fig. 6 is the axonometric chart at visual angle, rake teeth lower-left in trailing suction hopper dredger drag head of the present invention；
Fig. 7 is the axonometric chart at visual angle, drag head lower-left in trailing suction hopper dredger drag head of the present invention；
Fig. 8 is the axonometric chart at drag head upper right visual angle in trailing suction hopper dredger drag head of the present invention；
Fig. 9 is the front view of drag head in prior art；
Figure 10 is the working state schematic representation of drag head in prior art.
Detailed description of the invention
As shown in Fig. 1-Fig. 4 and Fig. 7, Fig. 8, trailing suction hopper dredger drag head of the present invention includes that main drag head 1, main drag head 1 rotate
Being supported in the rotating shaft 42 at rake arms 18 rear portion, rake arms 18 rear portion is provided with the protective cover matched with main drag head 1 external surface shape
43, protective cover 43 plays the effect protecting main drag head 1, prevents main drag head 1 from having impurity to enter main drag head 1 in rotation process simultaneously
Internal with rake arms 18.The agent structure of rake arms 18 is welded by multi-sheets, and processing is simple and has higher intensity.
Rake arms 18 is internally provided with hollow cavity 46, and hollow cavity 46 is externally connected to dredge pump in rake arms 18, is used for extracting mud.Rake arms
18 offer row's mud-suction hole 41 near main drag head 1 side, and mud-suction hole 41 is connected with the hollow cavity 46 in rake arms 18.Rake arms
The front end of 18 is machined with connecting hole 45, and connecting hole 45 transports the pipeline of earth for connecting.Rake arms 18 is arranged above supporting seat
17, support seat 17 is fixed with front hydraulic cylinder and fixes seat 15 and water inlet manifold 14.
As depicted in figs. 1 and 2, the water inlet of water inlet manifold 14 connects high-pressure flush pipeline 16, in high-pressure flush pipeline 16
Being full of water under high pressure, each outlet of water inlet manifold 14 connects each delivery hose respectively, it is ensured that water under high pressure is evenly distributed to each water outlet
In flexible pipe.Front hydraulic cylinder is fixed and is rotatablely equipped with hydraulic cylinder 13 on seat 15, and hydraulic cylinder 13 front end is rotationally connected with hydraulic cylinder bearing,
Hydraulic cylinder bearing is fixed on rear hydraulic cylinder and fixes on seat 10, and rear hydraulic cylinder is fixed seat 10 and is arranged on main drag head 1.Front hydraulic cylinder is solid
Reservation 15 and rear hydraulic cylinder fix seat 10 can be so that the dismounting of hydraulic cylinder 13 and replacing.When hydraulic cylinder 13 stretches, front hydraulic pressure
Cylinder is fixed seat 15 and is maintained static, and rear hydraulic cylinder is fixed seat 10 and driven main drag head 1 to rotate, and is that main drag head 1 provides power.
As shown in Figure 3 and Figure 4, delivery hose includes front water hose 12 and rear water hose 11, wherein rear water hose
11 connections have the rear diversion cavity 7 being arranged on main drag head 1, and rear diversion cavity 7 connects multiple heel row high-pressure nozzle 6, heel row
High-pressure nozzle 6 is along rear portion on the downside of main drag head 1 of the length direction linear array of main drag head 1；Front water hose 12 connects peace
Being contained in the leading water chamber 8 on main drag head 1, leading water chamber 8 connects has two water inlet pipes 21, water inlet pipe 21 lower end to extend into master
On the downside of drag head 1, water inlet pipe 21 lower end connects a horizontal aqueduct 19 and three longitudinal aqueducts 20, horizontal aqueduct 19 He
Longitudinal aqueduct 20 communicates, and is staggered on the downside of main drag head 1.Laterally connect on aqueduct 19 and have multiple front-seat high-pressure nozzle
4, on longitudinal aqueduct 20, there is multiple longitudinal high-pressure shower nozzle 2 each connection.Due to the restriction of locus, two that are positioned at both sides vertical
On aqueduct 20, there are 7 longitudinal high-pressure shower nozzles 2 each connection, and is positioned at connection on longitudinal aqueduct 20 of centre and has 8 longitudinal directions
High-pressure nozzle 2.Heel row high-pressure nozzle 6, front-seat high-pressure nozzle 4 are identical with the angle that longitudinal high-pressure shower nozzle 2 forward downward tilts, with
Horizontal direction angle is 30 °～60 °.
As shown in figures 3 to 6, main drag head 1 being also equipped with rake teeth group, the global shape of each rake teeth is wedge shaped, including head
Portion, transition part and root, wherein head includes main work surface 32 and the subtask face 31 that angle is obtuse angle, main work surface 32 and pair
Work surface 31 is used for cutting soil.Main work surface 32 is positioned at inside rake teeth, is connected with the inwall of transition part 33.The inwall of transition part 33 is
The cambered surface bent laterally, globoidal structure can be able to store more so that rake teeth increases excavating depth simultaneously inside rake teeth
Earth, prevents earth from too much hindering follow-up work.The outer wall auxiliary connection work surface 31 of transition part 33, the outer wall of transition part 33 is divided into
Two sections, be wherein directly connected to subtask face for tapered plane 36, tapered plane 36 can be so that the quick discharge of earth, tapered plane
It is the arc-plane 35 of inside lateral bend above in the of 36, it is simple to process and install.The root 34 of rake teeth is machined with mounting groove, is used for harrowing
Tooth and the connection of main drag head 1.Rake teeth group includes that front-seat rake teeth 3 and heel row rake teeth 5, front-seat rake teeth 3 and heel row rake teeth 5 lay respectively at
Middle part on the downside of main drag head 1 and rear portion, front-seat rake teeth 3 is identical with each shower nozzle with the angle of inclination of heel row rake teeth 5.
The operation principle of trailing suction hopper dredger drag head of the present invention: High-Pressure Water is entered water inlet manifold by high-pressure flush pipeline
14, current enter front water hose 12 and rear water hose 11 after being divided equally by manifold 14 of intaking, the height of water hose 12 before entering
Setting-out stream continues to flow into leading water chamber 8, flows to the horizontal aqueduct 19 on the downside of main drag head 1 and longitudinal diversion by water inlet pipe 21
In pipe 20, spray eventually through front-seat high-pressure nozzle 4 and longitudinal high-pressure shower nozzle 2；And the High-Pressure Water of water hose 11 after entering
Directly sprayed by heel row high-pressure nozzle 6 after diversion cavity 7 after entrance.The High-Pressure Water of each high-pressure nozzle ejection is used for breaking ground,
Reduce rake teeth cutting force, make rake teeth be more easy to cut soil, improve density when dredging closely knit fine sand, increase yield.Spray at High-Pressure Water
After penetrating, main drag head 1 starts action, and rake arms 18 remains stationary as, and main drag head 1 rotates, and drives the rake teeth group on main drag head 1 to enter
Row mud diging working, hydraulic cylinder 13 provides power to front two rows rake teeth.
Embodiment described above is only to be described the preferred embodiment of the present invention, the not model to the present invention
Enclose and be defined, on the premise of designing spirit without departing from the present invention, the those of ordinary skill in the art technical side to the present invention
Various deformation that case is made and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (7)
1. a trailing suction hopper dredger drag head, including main drag head, main drag head is rotatably supported in rake arms, it is characterised in that: described
Being provided with hydraulic cylinder between rake arms and main drag head, rake arms is fixed with into water manifold, the water inlet of water inlet manifold connects high pressure punching
Water pipeline, each outlet of water inlet manifold connects delivery hose respectively, and delivery hose includes front water hose and rear water hose,
Front water hose connects the leading water chamber being arranged on main drag head, and leading water chamber connects several water inlet pipes, water inlet
Pipe lower end extend on the downside of main drag head, and water inlet pipe lower end connects horizontal aqueduct and longitudinal aqueduct, and horizontal aqueduct is with vertical
Communicate to aqueduct, and be staggered on the downside of main drag head, horizontal aqueduct connects and has multiple front-seat high-pressure nozzle, longitudinally draw
On water pipe, there is multiple longitudinal high-pressure shower nozzle each connection, and rear water hose is supplied water to heel row high-pressure nozzle by rear diversion cavity, main
Being also equipped with rake teeth group on drag head, rake teeth group includes multiple rake teeth.
Trailing suction hopper dredger drag head the most according to claim 1, it is characterised in that: the rake teeth in described rake teeth group, front row
High-pressure nozzle, heel row high-pressure nozzle and the equal forward downward of longitudinal high-pressure shower nozzle tilt, and identical with the angle of horizontal direction.
Trailing suction hopper dredger drag head the most according to claim 2, it is characterised in that: described angle is 30 °～60 °.
Trailing suction hopper dredger drag head the most according to claim 1, it is characterised in that: described rake arms rear portion is provided with rotating shaft,
Rotating shaft is used for supporting main drag head, and rake arms rear portion is provided with the protective cover matched with main drag head external surface shape, the main body of rake arms
Structure is welded by multi-sheets, and rake arms is internally provided with hollow cavity, and hollow cavity is externally connected to dredge pump in rake arms, rake
The nearly main drag head side of arm rest offers row's mud-suction hole, and mud-suction hole is connected with the hollow cavity in rake arms, and the front end of rake arms adds
Work has connecting hole, and connecting hole transports the pipeline of earth for connecting.
5. according to the trailing suction hopper dredger drag head described in claim 1 or 4, it is characterised in that: described rake arms top is provided with props up
Support seat, water inlet manifold is fixed on support seat, support seat is further fixed on front hydraulic cylinder and fixes seat, and front hydraulic cylinder fixes seat and liquid
Cylinder pressure is rotationally connected, and hydraulic cylinder front end is rotationally connected with hydraulic cylinder bearing, and hydraulic cylinder bearing is fixed on rear hydraulic cylinder and fixes on seat,
Rear hydraulic cylinder is fixed seat and is arranged on main drag head.
Trailing suction hopper dredger drag head the most according to claim 1, it is characterised in that: described rake teeth group includes multiple shape
Identical rake teeth, each rake teeth entirety is wedge shaped, and including head, transition part and root, wherein head includes that angle is obtuse angle
Main work surface and subtask face, main work surface is positioned at inside rake teeth, is connected with the inwall of transition part, and the inwall of transition part is outside
The cambered surface of lateral bend, the outer wall auxiliary connection work surface of transition part, the outer wall of transition part is divided into two sections, wherein direct with subtask face
Connect for tapered plane, be the arc-plane of inside lateral bend above tapered plane, the root of rake teeth is machined with mounting groove.
7. according to the trailing suction hopper dredger drag head described in claim 1 or 6, it is characterised in that: described rake teeth group includes front-seat rake
Tooth and heel row rake teeth, front-seat rake teeth and heel row rake teeth lay respectively at the middle part on the downside of main drag head and rear portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610784493.1A CN106193157B (en) | 2016-08-31 | 2016-08-31 | Trailing suction hopper dredger drag head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610784493.1A CN106193157B (en) | 2016-08-31 | 2016-08-31 | Trailing suction hopper dredger drag head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106193157A true CN106193157A (en) | 2016-12-07 |
| CN106193157B CN106193157B (en) | 2018-08-28 |
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ID=58085193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610784493.1A Active CN106193157B (en) | 2016-08-31 | 2016-08-31 | Trailing suction hopper dredger drag head |
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| Country | Link |
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| CN (1) | CN106193157B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836342A (en) * | 2017-01-24 | 2017-06-13 | 黄河水利委员会黄河水利科学研究院 | One kind break ground jet suction formula suction head |
| CN108824534A (en) * | 2018-07-17 | 2018-11-16 | 芜湖芬特勘测服务有限公司 | A kind of hydraulic engineering Accrete clearing device |
| CN109208675A (en) * | 2018-09-11 | 2019-01-15 | 中交广州航道局有限公司 | Dredger and its drag head structure |
| WO2019010652A1 (en) * | 2017-07-12 | 2019-01-17 | 顾建磊 | Drag suction dredger |
| WO2019018994A1 (en) * | 2017-07-25 | 2019-01-31 | 袁晓霞 | High-efficiency trailing suction hopper dredger |
| CN109629622A (en) * | 2019-01-10 | 2019-04-16 | 中交上海航道局有限公司 | A kind of drag suction dredger drag head |
| CN110487663A (en) * | 2019-09-06 | 2019-11-22 | 中交疏浚技术装备国家工程研究中心有限公司 | Multi-function device for the research of Rock And Soil cutting scheme and cutter tooth optimization |
| CN112240036A (en) * | 2019-07-16 | 2021-01-19 | 武汉理工大学 | Self-rotating spray head for dredger harrow head |
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| EP0892116A1 (en) * | 1997-07-17 | 1999-01-20 | "Dredging International" | Drag head for a trailing suction hopper dredger and process for dredging by means of this drag head |
| EP1653010A1 (en) * | 2004-10-26 | 2006-05-03 | Ihc Holland N.V. | Method for performing an underwater dredging operation, and dredging installation |
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| CN205999958U (en) * | 2016-08-31 | 2017-03-08 | 中交烟台环保疏浚有限公司 | Trailing suction hopper dredger drag head |
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| EP0892116A1 (en) * | 1997-07-17 | 1999-01-20 | "Dredging International" | Drag head for a trailing suction hopper dredger and process for dredging by means of this drag head |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836342A (en) * | 2017-01-24 | 2017-06-13 | 黄河水利委员会黄河水利科学研究院 | One kind break ground jet suction formula suction head |
| WO2019010652A1 (en) * | 2017-07-12 | 2019-01-17 | 顾建磊 | Drag suction dredger |
| WO2019018994A1 (en) * | 2017-07-25 | 2019-01-31 | 袁晓霞 | High-efficiency trailing suction hopper dredger |
| CN108824534A (en) * | 2018-07-17 | 2018-11-16 | 芜湖芬特勘测服务有限公司 | A kind of hydraulic engineering Accrete clearing device |
| CN109208675A (en) * | 2018-09-11 | 2019-01-15 | 中交广州航道局有限公司 | Dredger and its drag head structure |
| CN109208675B (en) * | 2018-09-11 | 2024-02-13 | 中交广州航道局有限公司 | Dredger and drag head structure thereof |
| CN109629622A (en) * | 2019-01-10 | 2019-04-16 | 中交上海航道局有限公司 | A kind of drag suction dredger drag head |
| CN109629622B (en) * | 2019-01-10 | 2023-12-08 | 中交上海航道局有限公司 | Drag head of drag suction dredger |
| CN112240036A (en) * | 2019-07-16 | 2021-01-19 | 武汉理工大学 | Self-rotating spray head for dredger harrow head |
| CN110487663A (en) * | 2019-09-06 | 2019-11-22 | 中交疏浚技术装备国家工程研究中心有限公司 | Multi-function device for the research of Rock And Soil cutting scheme and cutter tooth optimization |
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| CN106193157B (en) | 2018-08-28 |
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Address after: 264000 Huan Hai Road, Zhifu District, Yantai, Shandong Province, No. 80 Patentee after: Hailu (Yantai) Environmental Dredging Co.,Ltd. Country or region after: China Address before: 264000 Huan Hai Road, Zhifu District, Yantai, Shandong Province, No. 80 Patentee before: CCCC TDC ENVIRONMENTAL PROTECTION DREDGING Co.,Ltd. Country or region before: China |