CN106555414A - A kind of device for dredging the closely knit Extra-fine sand of saturation and silt - Google Patents
A kind of device for dredging the closely knit Extra-fine sand of saturation and silt Download PDFInfo
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- CN106555414A CN106555414A CN201611027805.0A CN201611027805A CN106555414A CN 106555414 A CN106555414 A CN 106555414A CN 201611027805 A CN201611027805 A CN 201611027805A CN 106555414 A CN106555414 A CN 106555414A
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- tooth
- rake teeth
- flank
- sword
- ground
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Classifications
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- 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
- E02F3/9218—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel with jets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
A kind of device for dredging the closely knit Extra-fine sand of saturation and silt, its movable guard is rotated with fixed body by pivot pin, the movable guard is rotated by hydraulic cylinder control, high-pressure flush house steward is equipped with fixed body, its rear end is equipped with hydraulic spray, movable guard upper end is equipped with diversion window, movable guard lower end is equipped with rake teeth of two rows with high-pressure flush hole, which often arranges rake teeth for rake teeth of the wedge shape flank of tooth with the sword that breaks ground, or rake teeth of the rectangle flank of tooth with the sword that breaks ground, or the rectangle flank of tooth, without the rake teeth of the sword that breaks ground, in two row's rake teeths, an at least row is the rake teeth with the sword that breaks ground.The excavation difficulty of can be broken ground according to rake teeth situation and the soil body of the invention, selects corresponding rake teeth type, so that rake teeth is more easy to the injection soil body.Sword used cooperatively with high-pressure flush by installing to break ground on the flank of tooth, dilatancy effect is effectively eliminated or reduce for the impact of rake teeth cutting resistance.Therefore, the present invention can greatly reduce rake teeth cutting resistance, so as to lift the dredging efficiency of trailing suction hopper dredger on the whole.
Description
Technical field
The present invention relates to the dredger in a kind of dredging work on trailing suction hopper dredger, particularly a kind of dredging saturation is closely knit
The device of Extra-fine sand and silt.
Background technology
In prior art, rake teeth cutting resistance is one of suffered main external force in Dredging Process of trailing suction hopper dredger,
The size of rake teeth cutting resistance is to carry out Strength co-mputation when trailing suction hopper dredger is designed and determine the key factor of required installed power,
And the fundamental of high efficient dredging.
Major port on the very long coastline of China is complicated and changeable with the substrate of approach channel, widely distributed closely knit hardened
Extra-fine sand and silt, this difficult soil property dug directly affects the production efficiency and construction speed of dredger.Such soil is difficult to dig
That what is dug main reason is that such soil based on powder and sticking grain, and granule is less, and permeability is poor.Rake teeth cuts soil body process
In, Jian Zhang areas can formed near the position of crown（Negative pressuren zone）, according to principle of effective stress, the presence of negative pressure has caused effect
Power correspondingly increases, therefore can increase the cutting resistance of rake teeth.Further, since the permeability of the closely knit Extra-fine sand of saturation and silt compared with
Low, current cannot quickly add to Jian Zhang areas so that Jian Zhang areas quickly cannot eliminate, so as to cause cutting resistance persistently to occupy height not
Under.
In addition, hardened Extra-fine sand closely knit for saturation and silt, as which has certain cohesive strength, in mining process
Middle rake teeth is difficult injection, and will not be washed under low speed water effect so that the scouring effect of pumping current is very little.
In sum, the efficiency of the closely knit hardened Extra-fine sand of raising trailing suction hopper dredger rake teeth cutting and this kind of soil of silt, one
Aspect will be such that rake teeth is easy in injection soil, the impact on the other hand eliminated by dilatancy effect during the rake teeth cutting soil body.
The content of the invention
The technical problem to be solved is to overcome the defect in the presence of above-mentioned prior art, there is provided a kind of to be suitable for
In the closely knit Extra-fine sand of dredging saturation and the device of silt.
Present invention employs following technical proposal and solve its technical problem：It is a kind of for dredge the closely knit Extra-fine sand of saturation with
The device of silt, including fixed body, and by pivot pin and fixed body in rotating the movable guard being connected, the movable guard is by being fixed on
The hydraulic arm control rotation of hydraulic cylinder and its extension on fixed body, is fixedly equipped with high-pressure flush house steward, fixed body on fixed body
Rear end is fixedly equipped with the nozzle that can spray water under high pressure, and the upper end of movable guard is equipped with diversion window, and the lower end of movable guard is fixedly equipped with two
Rake teeth of the row with high-pressure flush hole, it is characterised in that：Two row's rake teeths that described movable guard lower end is fixedly equipped with, which often arranges rake
Tooth is rake teeth of the wedge shape flank of tooth with the sword that breaks ground, or rake teeth of the rectangle flank of tooth with the sword that breaks ground, or the rectangle flank of tooth is without broken
The rake teeth of native sword, in two row's rake teeths, an at least row is the rake teeth with the sword that breaks ground.
The present invention can select corresponding rake teeth type according to the excavation difficulty of break ground situation and the soil body of rake teeth, with
Just rake teeth is more easy to the injection soil body, and adapts to the saturation Extra-fine sand and silt of different compaction rates.Broken ground by installing on the flank of tooth
Sword is simultaneously used cooperatively with high-pressure flush, effectively eliminates or reduce dilatancy effect for the impact of rake teeth cutting resistance.Therefore,
The present invention can greatly reduce rake teeth cutting resistance, so as to lift the dredging efficiency of trailing suction hopper dredger on the whole.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is that 1 movable guard inner tine for harrow of the embodiment of the present invention arranges situation schematic diagram.
Fig. 3 is that 2 movable guard inner tine for harrow of the embodiment of the present invention arranges situation schematic diagram.
Fig. 4 is that 3 movable guard inner tine for harrow of the embodiment of the present invention arranges situation schematic diagram.
Fig. 5 is harrow tooth structure schematic diagram of the wedge shape flank of tooth of the present invention with the sword that breaks ground.
Fig. 6 is rake teeth side view of the wedge shape flank of tooth of the present invention with the sword that breaks ground.
Fig. 7 is rake teeth axonometric chart of the wedge shape flank of tooth of the present invention with the sword that breaks ground.
Fig. 8 is harrow tooth structure schematic diagram of the rectangle flank of tooth of the present invention with the sword that breaks ground.
Fig. 9 is rake teeth side view of the rectangle flank of tooth of the present invention with the sword that breaks ground.
Figure 10 is rake teeth axonometric chart of the rectangle flank of tooth of the present invention with the sword that breaks ground.
Figure 11 is harrow tooth structure schematic diagram of the rectangle flank of tooth of the present invention without the sword that breaks ground.
Figure 12 is rake teeth side view of the rectangle flank of tooth of the present invention without the sword that breaks ground.
Figure 13 is rake teeth axonometric chart of the rectangle flank of tooth of the present invention without the sword that breaks ground.
In figure, each sequence number is expressed as：
1-movable guard；2-diversion window；3-hydraulic cylinder；4-high-pressure flush house steward；5-fixed body；6-pivot pin；7-nozzle；
8-front-seat rake teeth；9-heel row rake teeth；10-nozzle；
11-tooth root；12-crozier；13-platform taper cave；14-flank of tooth；15-break ground sword；16-blade tip end of breaking ground；17—
High-pressure flush hole；18-curved surface.
Specific embodiment
With reference to embodiments and accompanying drawing the invention will be further described.
With reference to Fig. 1, the present invention includes fixed body 5, and the movable guard 1 being connected in rotation with fixed body 5 by pivot pin 6,
The movable guard 1 is rotated around pivot pin 6 by the hydraulic cylinder 3 being fixed on fixed body 5 and its control of the hydraulic arm of extension, on fixed body 5
High-pressure flush house steward 4 is fixedly equipped with, 5 rear end of fixed body is fixedly equipped with the nozzle 7 that can spray water under high pressure, and the upper end of movable guard 1 is put
The lower end for having diversion window 2, movable guard 1 is fixedly equipped with rake teeth of two rows with high-pressure flush hole 17, heel row rake teeth 9 and front-seat rake teeth
8 interlaced arrangements.
Two row's rake teeths that described 1 lower end of movable guard is fixedly equipped with, which is often arranged rake teeth and carries the sword 15 that breaks ground for the wedge shape flank of tooth
Rake teeth, or the rectangle flank of tooth is with the rake teeth of sword 15 of breaking ground, or the rectangle flank of tooth is without the rake teeth of the sword 15 that breaks ground, two row's rake teeths
In an at least row be the rake teeth with the sword 15 that breaks ground.
With reference to Fig. 2, the embodiment of the present invention 1 is for slightly closely knit saturation Extra-fine sand and silt, now, 1 lower end of movable guard
Fixed front-seat rake teeth 8 is rake teeth of the wedge shape flank of tooth with the sword 15 that breaks ground, and heel row rake teeth 9 is the rectangle flank of tooth without the sword 15 that breaks ground
Rake teeth.As such soil is slightly closely knit, injection, and the dual work of the cutting of premenstrual row's rake teeth 8 and high-pressure flush are comparatively easier to
With the soil body has become more loose, therefore the flank of tooth 14 of heel row rake teeth 9 is the rectangle flank of tooth, and arranges high-pressure flush thereon
Hole 17 carries out assisted mining.
With reference to Fig. 3, the embodiment of the present invention 2 be directed in close saturation Extra-fine sand and silt, now, 1 lower end of movable guard is solid
Fixed front-seat rake teeth 8 is rake teeth of the wedge shape flank of tooth with the sword 15 that breaks ground, and heel row rake teeth 9 is rake of the rectangle flank of tooth with the sword 15 that breaks ground
Tooth.As such penus is in medium closely knit, it is more difficult to loose, therefore heel row rake teeth 9 installs the sword 15 that breaks ground on the rectangle flank of tooth, broken
The symmetrical high-pressure flush hole in the both sides of native sword 15 17.
With reference to Fig. 4, the embodiment of the present invention 3 is for extremely closely knit saturation Extra-fine sand and silt, now, under movable guard 1
The fixed front-seat rake teeth 8 in end is rake teeth of the wedge shape flank of tooth with the sword 15 that breaks ground, and heel row rake teeth 9 is also the wedge shape flank of tooth with the sword that breaks ground
15 rake teeth.Due to such soil it is extremely closely knit, it is difficult to loose and excavate, so front-seat rake teeth 8 and heel row rake teeth 9 are using carrying
High-pressure flush hole 17 and the wedge shape rake teeth of the sword 15 that breaks ground, so in front-seat rake teeth 8 and heel row rake teeth 9, the nozzle of 5 rear end of fixed body
The excavation of such soil is completed between 7 and heel row rake teeth 9 under the collective effect of spaced apart high-pressure flush nozzle 10 and is crushed
Work.
With reference to Fig. 5, Fig. 6 and Fig. 7, rake teeth of the wedge shape flank of tooth of the present invention with the sword 15 that breaks ground, by tooth root 11 and tooth
Face 14 is together cast and is formed, and the tooth root 11 is in fang platform cone-shaped, and the vertebral body center is equipped with the platform taper corresponding with rake teeth seat
Cave 13,11 rear portion of tooth root are equipped with crozier 12, and the crozier 12 fastens rake teeth using latch after being set to the horizontal cotter way of rake teeth seat.
Described 14 profile of the rake teeth flank of tooth is wedge shape, inswept rear end width, and crown forming V-shape, is equipped with the middle of the flank of tooth 14 of rake teeth
Break ground sword 15.In order to avoid stress concentration, this to break ground and carry out transition by curved surface 18 between sword 15 and the flank of tooth 14, and break ground sword 15
Height linearly reduces from 14 front end of the flank of tooth to 14 rear end of the flank of tooth, and the width of the sword 15 that breaks ground is 0.1～0.2 times of 14 width of the flank of tooth,
It is obtuse angle that 14 front end of the flank of tooth and 15 front end of sword of breaking ground form angle theta, and blade tip end 16 of breaking ground is arcuate structure, in the flank of tooth 14 of rake teeth
The break ground both sides of sword 15 of centre are equipped with high-pressure flush hole 17 respectively, wash by water along two sides of the sword 15 that breaks ground to crown direction,
So while being broken ground by 15 cutting edge of sword that breaks ground with the use of the flank of tooth 14 on the high-pressure flush hole 17 arranged and solid
7 active of nozzle of 5 rear end of body is determined to Jian Zhang areas high-pressure flush.
With reference to Fig. 8, Fig. 9 and Figure 10, rake teeth of the rectangle flank of tooth 14 of the present invention with the sword 15 that breaks ground, by tooth root 11 with
The flank of tooth 14 is constituted, and the rake teeth that its tooth root 11 is constructed with the wedge shape flank of tooth 14 with the sword 15 that breaks ground is identical.Its 14 profile of flank of tooth is rectangle,
Front and back end width is equal, is equipped with the sword 15 that breaks ground in the middle of the flank of tooth 14 of rake teeth, the curved surface that pass through between sword 15 and the flank of tooth 14 that breaks ground
18 carry out transition, and the height of the sword 15 that breaks ground linearly reduces from 14 front end of the flank of tooth to 14 rear end of the flank of tooth, and the width of the sword 15 that breaks ground is tooth
It is obtuse angle that 0.1～0.2 times of 14 width of face, 14 front end of the flank of tooth and 15 front end of sword of breaking ground form angle α, breaks ground blade tip end 16 for arc
Shape structure, the both sides of the sword 15 that breaks ground in the middle of the flank of tooth 14 of rake teeth are also equipped with high-pressure flush hole 17 respectively.
With reference to Figure 11, Figure 12 and Figure 13, rake teeth of the rectangle flank of tooth of the present invention 14 without the sword 15 that breaks ground, by tooth root 11
Constitute with the flank of tooth 14, the rake teeth that its tooth root 11 is constructed also with the wedge shape flank of tooth 14 with the sword 15 that breaks ground is identical.Outside the rake teeth flank of tooth 14
Shape is rectangle, and front and back end width is equal, in the middle of the flank of tooth 14 of rake teeth is equipped with high-pressure flush hole 17.
0.3～0.5 times for 14 length of the flank of tooth of the distance of above-mentioned all high-pressure flush holes 17 and 14 front end of the flank of tooth.
The present invention is also provided with diversion window 2 and turnover panel oil cylinder on movable guard 1, and flexible by turnover panel oil cylinder can make turnover panel
Rotate around bearing pin, so as to realize the keying of diversion window 2, and adjust the inflow of diversion window 2.Suction in Real Time Observation rake pipe is true
Sky, when suction vacuum exceedes setting, opens diversion window 2 in time, prevents vexed rake.The soil body is cut after crushing, in dredge pump suction
Spoil hopper is entered by dredging tube under effect, and carries out the stowage operation such as overflow and Throwing mud successively.
During present invention work, first package unit is transferred to precalculated position under water, movable guard 1 is controlled by hydraulic cylinder 3
Rotate around pivot pin 6, forward and backward row's rake teeth 9 is adjusted to suitable angle.
Then according to speed determined by after examination digging drags the covering device advancing, cut by two row's rake teeths in movable guard 1
The broken soil body is cut, wherein front row is the wedge shape rake teeth with break ground sword 15 and high-pressure flushing hole 17, it is same so what is broken ground
When actively to Jian Zhang areas high-pressure flush, so as to eliminate or reduce dilatancy effect for the impact of cutting resistance.After in movable guard 1
Row's rake teeth 9 selects corresponding rake teeth type according to the excavation difficulty of break ground situation and the soil body of front-seat rake teeth 8, and with front row
Tooth interlaced arrangement.By spaced apart high-pressure flush nozzle between 5 front end of fixed body and heel row rake teeth 9, on rake teeth
High-pressure flush is used cooperatively, and auxiliary carries out soil excavation and crushed.
The soil body is cut after crushing, and is entered spoil hopper by dredging tube, and is carried out stowage successively and overflow under dredge pump suction
The operation such as stream and Throwing mud.
The present invention is not restricted to the example lifted herein, on the premise of the principle and essence without departing substantially from the present invention, can be with
These embodiments are made with various changes and modification, such as forward and backward row's rake teeth also includes all kinds of teeth such as half plough type tooth, plough type tooth
Type.Therefore, the present invention is not intended to be limited to embodiment illustrated herein, and is to fit to and principles disclosed herein and new
The consistent most wide scope of clever feature.
Claims (6)
1. a kind of device for dredging the closely knit Extra-fine sand of saturation and silt, including fixed body, and pass through pivot pin and fixed body
In the movable guard for rotating connection, hydraulic arm control rotation of the movable guard by the hydraulic cylinder and its extension being fixed on fixed body,
Be fixedly equipped with high-pressure flush house steward on fixed body, fixed body rear end is fixedly equipped with the nozzle that can spray water under high pressure, movable guard it is upper
End is equipped with diversion window, and the lower end of movable guard is fixedly equipped with rake teeth of two rows with high-pressure flush hole, it is characterised in that：Described work
Two row's rake teeths that dynamic cover lower end is fixedly equipped with, which often arranges the rake teeth that rake teeth is that the wedge shape flank of tooth carries the sword that breaks ground, or the rectangle flank of tooth
Rake teeth with the sword that breaks ground, or the rectangle flank of tooth is without the rake teeth of the sword that breaks ground, in two row's rake teeths, an at least row is to carry to break ground
The rake teeth of sword.
2. a kind of device for dredging the closely knit Extra-fine sand of saturation and silt according to claim 1, it is characterised in that：Institute
The wedge shape flank of tooth stated is made up of with the flank of tooth tooth root with the rake teeth of sword of breaking ground, the tooth root in fang platform cone-shaped, the vertebral body center
The platform taper cave corresponding with rake teeth seat is equipped with, tooth root rear portion is equipped with crozier, the rake teeth tooth flank profile is wedge shape, after inswept
End is wide, and crown forming V-shape, is equipped with the sword that breaks ground in the middle of the flank of tooth of rake teeth, and this is broken ground
Transition, the height of the sword that breaks ground linearly reduce from flank of tooth front end to flank of tooth rear end, the width of the sword that breaks ground for face width of tooth 0.1～
0.2 times, it is obtuse angle that flank of tooth front end forms angle theta with sword front end of breaking ground, and blade tip end of breaking ground is arcuate structure, in the flank of tooth of rake teeth
Between the break ground both sides of sword be equipped with high-pressure flush hole respectively.
3. a kind of device for dredging the closely knit Extra-fine sand of saturation and silt according to claim 1, it is characterised in that：Institute
The rectangle flank of tooth stated is made up of with the flank of tooth tooth root with the rake teeth of sword of breaking ground, the tooth root in fang platform cone-shaped, the vertebral body center
Be equipped with the platform taper cave corresponding with rake teeth seat, tooth root rear portion is equipped with crozier, the rake teeth tooth flank profile be rectangle, front and back end width
It is narrow equal, the sword that breaks ground is equipped with the middle of the flank of tooth of rake teeth, this to break ground and carry out transition by curved surface between sword and the flank of tooth, and break ground sword
Height linearly reduces from flank of tooth front end to flank of tooth rear end, and the width of the sword that breaks ground is 0.1～0.2 times of face width of tooth, flank of tooth front end
It is obtuse angle that angle α is formed with sword front end of breaking ground, and breaks ground blade tip end for arcuate structure, the both sides of the sword that breaks ground in the middle of the flank of tooth of rake teeth
High-pressure flush hole is equipped with respectively.
4. a kind of device for dredging the closely knit Extra-fine sand of saturation and silt according to claim 1, it is characterised in that：Institute
The rectangle flank of tooth stated is made up of with the flank of tooth tooth root without the rake teeth of the sword that breaks ground, the tooth root be in fang platform cone-shaped, the vertebral body center
Be equipped with the platform taper cave corresponding with rake teeth seat, tooth root rear portion is equipped with crozier, the rake teeth tooth flank profile be rectangle, front and back end width
It is narrow equal, high-pressure flush hole is equipped with the middle of the flank of tooth of rake teeth.
5. a kind of device for dredging the closely knit Extra-fine sand of saturation and silt according to claim 1, it is characterised in that：It is living
Two row's rake teeths, a row behind rake teeth and front-seat rake teeth interlaced arrangement are laid in dynamic cover.
6. a kind of device for dredging the closely knit Extra-fine sand of saturation and silt according to claim 2 or 3 or 4, its
It is characterised by：0.3～0.5 times for flank of tooth length of the distance of described high-pressure flush hole and flank of tooth front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611027805.0A CN106555414A (en) | 2016-11-22 | 2016-11-22 | A kind of device for dredging the closely knit Extra-fine sand of saturation and silt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611027805.0A CN106555414A (en) | 2016-11-22 | 2016-11-22 | A kind of device for dredging the closely knit Extra-fine sand of saturation and silt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106555414A true CN106555414A (en) | 2017-04-05 |
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ID=58443776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611027805.0A Pending CN106555414A (en) | 2016-11-22 | 2016-11-22 | A kind of device for dredging the closely knit Extra-fine sand of saturation and silt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106555414A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2830519Y (en) * | 2005-09-28 | 2006-10-25 | 中港疏浚股份有限公司 | Flushing rake tooth |
| CN102312454A (en) * | 2011-07-14 | 2012-01-11 | 中交天津港航勘察设计研究院有限公司 | Inter-tooth high-pressure water-flushing soil breaking rake head |
| CN203393766U (en) * | 2013-07-03 | 2014-01-15 | 中交上海航道局有限公司 | Drag head for drag suction dredger |
| US20140190044A1 (en) * | 2011-07-08 | 2014-07-10 | Ihc Holland Ie B.V. | Drag head and trailing suction hopper dredger |
| CN204826025U (en) * | 2015-07-15 | 2015-12-02 | 中港疏浚有限公司 | A rake head for dredging glued grit |
| CN206267209U (en) * | 2016-11-22 | 2017-06-20 | 中交疏浚技术装备国家工程研究中心有限公司 | Device for dredging the closely knit Extra-fine sand of saturation and silt |
-
2016
- 2016-11-22 CN CN201611027805.0A patent/CN106555414A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2830519Y (en) * | 2005-09-28 | 2006-10-25 | 中港疏浚股份有限公司 | Flushing rake tooth |
| US20140190044A1 (en) * | 2011-07-08 | 2014-07-10 | Ihc Holland Ie B.V. | Drag head and trailing suction hopper dredger |
| CN102312454A (en) * | 2011-07-14 | 2012-01-11 | 中交天津港航勘察设计研究院有限公司 | Inter-tooth high-pressure water-flushing soil breaking rake head |
| CN203393766U (en) * | 2013-07-03 | 2014-01-15 | 中交上海航道局有限公司 | Drag head for drag suction dredger |
| CN204826025U (en) * | 2015-07-15 | 2015-12-02 | 中港疏浚有限公司 | A rake head for dredging glued grit |
| CN206267209U (en) * | 2016-11-22 | 2017-06-20 | 中交疏浚技术装备国家工程研究中心有限公司 | Device for dredging the closely knit Extra-fine sand of saturation and silt |
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Application publication date: 20170405 |