CN104995356A - Dredging arrangement comprising a biasing device - Google Patents
Dredging arrangement comprising a biasing device Download PDFInfo
- Publication number
- CN104995356A CN104995356A CN201380072968.9A CN201380072968A CN104995356A CN 104995356 A CN104995356 A CN 104995356A CN 201380072968 A CN201380072968 A CN 201380072968A CN 104995356 A CN104995356 A CN 104995356A
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- CN
- China
- Prior art keywords
- baffle plate
- excavating equipment
- drag head
- scope
- bias unit
- 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.)
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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
- E02F3/8833—Floating installations
- E02F3/8841—Floating installations wherein at least a part of the soil-shifting equipment is mounted on a ladder or boom
-
- 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
- E02F3/905—Manipulating or supporting suction pipes or ladders; Mechanical supports or floaters therefor; pipe joints for suction pipes
-
- 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
- E02F3/9243—Passive suction heads with no mechanical cutting means
-
- 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
- E02F3/9243—Passive suction heads with no mechanical cutting means
- E02F3/925—Passive suction heads with no mechanical cutting means with jets
-
- 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
- E02F3/9293—Component parts of suction heads, e.g. edges, strainers for preventing the entry of stones or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/06—Floating substructures as supports
- E02F9/067—Floating substructures as supports with arrangements for heave compensation
Landscapes
- 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
The invention relates to a dredging arrangement for dredging material from an underwater bottom (6). The dredging arrangement comprises a drag head body (11) and a visor (12), the visor (12) being connected to the drag head body (11) and is moveable with respect to the drag head body (11) over a predetermined range. The biasing device (60) is provided in between the drag head body (11) and the visor (12) exerting a biasing force on the visor (12) over a biasing portion of the predetermined range, the biasing portion being at least 25% of the range.
Description
Technical field
The present invention relates to a kind of excavating equipment for excavating material from the bottom.The invention still further relates to a kind of excavation boats and ships comprising this excavating equipment.
The invention still further relates to a kind of method using this excavation boats and ships to excavate material from the bottom.
Background technology
Usually on the bottom, pull drag head by excavation boats and ships (such as drag suction dredger) and complete excavation.Drag head is connected to boats and ships by means of suction tube.Drag head is reduced to the bottom by one or more lifting cable.Provide one or more pump to be drawn into the hopper excavating boats and ships from the bottom by bottoms material by drag head, suction tube.
Such as from the known different excavating tools of US4249324, EP1786982 and US7895775.
Drag head is known comprises baffle plate (visor) at its tail end place.Baffle plate can rotate around rotation, in use, and this rotation substantially vertical with excavation direction and cardinal principle and the water-bed level or parallel excavated.Baffle plate can be mounted to this baffle plate freely can be rotated around its rotation.
US1840606 show shell and can around be generally perpendicular to excavation direction and the rotation of general horizontal rotate rake tool (baffle plate).The top of this rake tool has two projection pieces comprising groove, and wherein, the lower pin of connector engages slidably.The other end of connector passes through spring damper equipment connection to shell.Drag head can freely rotate, until one end of the lower pin arrival slot of connector or the other end.Spring damper equipment is set to absorb vibration when the end of lower pin arrival slot.In US1840606, baffle plate freely moves in its moving range.
The shortcoming of the baffle plate moved freely is, baffle plate not always follows the profile on the bottom (trench, sand dune), this is because this baffle plate is held against the bottom by means of only its weight.In addition, due to the weight that baffle plate self is limited, so this drag head provides the limited penetration depth (causing less production) of baffle plate.Baffle plate being placed normally a kind of solution do not calculated of additional weight, this is because when promoting drag head from water, needing larger lifting power.Known alternative solution overcomes this problem.
Such as, it is well known that make baffle plate be fixed in the position of rotation of expectation.To this solution provides when excavation condition changes (such as, by surge, tidal motion, in loading or unloading time boats and ships change drinking water, the water-bed degree of depth etc. causes excavation depth change and the change of soil behaviour (soil such as compressed or loose soil etc.)) secondary good result.This solution also can cause the heel of the drag head when being positioned to depths (critical piece) to be mentioned from earth (causing less production).In addition, fixing baffle plate can not process obstruction, and can damage.
Another kind of known solution is the rotary motion using hydraulic actuator to control baffle plate.Such as, GB2128663 uses hydraulic actuator to control the position of rotation of baffle plate.US4123859 and US4150502 all uses hydraulic actuator to control the position of cutting tool or chisel.But this is the solution of a kind of costliness and complexity, and this solution needs control work.Hydraulic system is easy to reveal and break down.
Summary of the invention
Target of the present invention is to provide a kind of excavating equipment of improvement.
Therefore, according to an aspect, provide a kind of excavating equipment for excavating material from the bottom, described excavating equipment comprises drag head main body and baffle plate, described baffle plate is connected to drag head main body and can moves in predetermined scope relative to drag head main body, wherein, between drag head main body and baffle plate, arranges bias unit, this bias unit applies bias force on baffle plate in the biased part of predetermined scope, and biased part is at least 25% of described scope.
Described predetermined scope is adjustable, and can be limited by electromechanical stop, and the movement limiting movable part is arranged to by stop.
Power is applied in promote baffle plate towards the bottom.Baffle plate can comprise multiple tooth, and multiple tooth is mounted to the row being in substantially parallel relationship to rotation.These teeth push in the bottom by the power applied by bias unit.
This baffle plate freely can move on the remainder of rotating range, but also can on the remainder of rotating range (such as) by controls such as hydraulic means.
By using bias unit, power is applied to baffle plate thus produces darker penetration depth, can keep dodging weight simultaneously.
According to embodiment, biased part is at least 40% of described scope.
According to embodiment, biased part is at least 60% of described scope.
According to embodiment, biased part is at least 80% or 100% of described scope.
Owing to needing less control to take the excavation condition (such as, excavation depth) of change into account during excavating, so larger biasing range makes excavation easier.
According to embodiment, baffle plate can rotate around rotation relative to drag head main body, and predetermined biasing range is predetermined rotating range, in use, described rotation is in substantially parallel relationship to the bottom and perpendicular to excavation direction, and described predetermined biasing range is predetermined rotation biasing range.Baffle plate can be connected to the tail end of drag head main body.
Such as can arrange predetermined rotating range by two electromechanical stop, the degree of freedom of the rotary motion of baffle plate is restricted to the scope of such as 20 °, 30 °, 40 ° or 50 ° by described stop.
Alternately, can use can the baffle plate of movement in another way, such as slidably baffle plate, can the baffle plate of translation, maybe can use the baffle plate being arranged to the combination performing rotary motion and translational motion.
In this case, this scope can be such as 50 °, and wherein, the biased part of this scope is 20 ° (40%).
According to embodiment, bias unit applies bias force on baffle plate, is pushed in downward direction to make baffle plate.In use, baffle plate is promoted towards the bottom.
When the baffle plate rotated, promote baffle plate and rotate to make baffle plate effectively move down.
One end of bias unit is connected to baffle plate, and the other end is connected to another parts (such as, the lower end of drag head main body or suction tube) of excavating equipment, power can be applied on baffle plate to make bias unit.Bias force is at (rotation) downward side's upwardly baffle plate.
Bias unit is preferably mounted on the top of excavating equipment.
According to embodiment, the biased part of described scope is the upper part of described scope, and described baffle plate moves freely in the residue low portion of described scope.
In the upper part of scope that bias force is preferably applied to (rotation).When excavating equipment is raised or is positioned in the resting position on the deck of boats and ships, usually use the low portion of (rotation) scope.When excavating equipment is immersed in the bottom, the low portion of (rotation) scope also can be used.
According to embodiment, described bias unit is adjustable to arrange the bias force applied.
By regulating bias force can the activity of controllable register.Such as, if bias unit is set to apply higher preload force, then baffle plate will be pushed in the bottom by deep, cause relatively large excavation depth.In this case, when running into obstruction (such as, rock), baffle plate is harder.
Will be appreciated that, according to used bias unit, actual bias force can change in the biased part of (rotation) scope.But by regulating bias force, bias force can increase or reduce in whole biased part.
According to embodiment, bias unit comprises spring assembly, and described spring assembly loads in the biased part of described scope, applies bias force to make described spring assembly on baffle plate.
Spring assembly is the advantageous arrangement arranging bias unit.In addition, spring assembly has the following advantages: can process vibrations in a reliable fashion when such as pulling drag head on obstruction (such as stone etc.).
In addition, also can use spring assembly, wherein, bias force increases towards the upper part of baffle plate in the biased part of (rotation) scope.Spring assembly is suitable for producing predetermined force characteristic along (rotation) scope.
In addition, spring assembly has the advantage not needing external power source.
According to embodiment, spring assembly comprises one or more torsionspring.
According to embodiment, spring assembly comprises one or more disc spring.
Disc spring be directed in make its longitudinal direction be parallel to excavation direction or relative to excavation direction in angle upwards.When butterfly, longitudinal direction can perpendicular to rotation.Disc spring can be an angle relative to horizontal direction.
Disc spring can be the Compress Spring that adjacent coil does not contact with each other when unloading.Construct and disc spring be installed to make this disc spring at least in the upper compression of (rotation) that limit of this scope biased part above.
Certainly, other suitable spring assemblies can be used, such as, rubber device.
According to embodiment, described bias unit is arranged between the lower end of baffle plate and drag head main body or suction tube.
Suction tube can be connected to drag head main body, or suction tube can be formed with drag head entire body.
Preloading device can be connected to the lower end of drag head main body or suction tube in any suitable manner.This connection can be directly connect or can set up by means of connecting elements.This connection can be rotatably connected, and this is rotatably connected and allows bias unit to be rotated relative to the lower end of drag head main body or suction tube around the rotation of the rotation being parallel to baffle plate.
Bias unit can be connected directly to baffle plate.Bias unit can be connected to baffle plate by means of being rotatably connected, and this is rotatably connected and allows bias unit to be rotated relative to baffle plate around the rotation of the rotation being parallel to baffle plate.
Alternately or in addition, this connection allows sliding motion or transverse movement.
According to embodiment, bias unit is connected to excavating equipment by means of power transmission structure.
Power transmission structure comprises two or more beams be rotatably connected, and power is passed to baffle plate from preloading device by this beam.Alternately or in addition, power transmission structure allows sliding motion or transverse movement.
According to embodiment, power transmission structure is adjustable to arrange the moment be applied to by bias unit on baffle plate.
According to embodiment, power transmission structure is adjustable to arrange predetermined scope.
According to embodiment, moveable parts are baffle plates, and bias unit is arranged to apply bias force, and this bias force produces the moment acted on baffle plate, owing to acting on the gravity on baffle plate, so described moment average in biased part is at least 50% of the moment acted on baffle plate.
Preferably, owing to acting on the gravity on baffle plate, so the moment acted on baffle plate average in biased part is at least 75% or at least 100% of the moment acted on baffle plate.
According on the one hand, provide and a kind ofly excavate boats and ships, these excavation boats and ships comprise aforementioned according to any one of claim for excavating the excavating equipment of material from the bottom and making described excavating equipment be connected to the suction tube excavating boats and ships.
According to one side, provide the method for excavation boats and ships from bottom excavation material that a kind of use comprises excavating equipment, described excavating equipment comprises drag head main body and baffle plate, and described baffle plate can move in predetermined scope relative to drag head main body,
Wherein, the method comprises:
-by using electromechanical stop to regulate predetermined scope,
-make excavating equipment be reduced to water bottom location, wherein, drag head is positioned on the bottom,
-on excavation direction, on the bottom, pull drag head by excavation boats and ships to excavate,
Excavating equipment comprises bias unit, and this bias unit is arranged between drag head main body and baffle plate, and described bias unit applies bias force in the biased part of predetermined scope on baffle plate, and wherein, described method comprises:
-regulate bias unit to arrange the bias force applied.
As mentioned above, baffle plate can rotate relative to drag head main body, and this baffle plate can be arranged on tail end place, and predetermined scope can be predetermined rotating range.Preferentially adjustment was completed before reduction excavating equipment.
According to embodiment, bias unit is connected to excavating equipment by adjustable power transmission structure, and described method comprises:
-regulate described power transmission structure to arrange the moment be applied to by bias unit on baffle plate.
Can adjustment force characteristic (power according to the position of baffle plate within the scope of this) before reduction excavating equipment.
Preferentially adjustment was completed before reduction excavating equipment.
Accompanying drawing explanation
Describe embodiment with reference to accompanying drawing by means of only the mode of example, in the accompanying drawings, corresponding reference symbol represents corresponding parts, and in the accompanying drawings:
Fig. 1 diagrammatically illustrates complete excavation boats and ships and excavating equipment,
Fig. 2 a-2c diagrammatically illustrates the phantom drawing of the excavating equipment according to an embodiment, top view and lateral view,
Fig. 3 diagrammatically illustrates the lateral view of the excavating equipment according to an embodiment,
Fig. 4 a-4b diagrammatically illustrates the diagram describing embodiment.
Accompanying drawing only for illustration of object, and be not used as the restriction to the scope advocated by claim or protection.
Detailed description of the invention
Fig. 1 schematically describes the excavation boats and ships 1 according to an embodiment.Excavate boats and ships 1 and comprise drag head 10, this drag head is attached to by suction tube 2 and excavates boats and ships 1.Suction tube 2 comprises the pin joint in the stage casing being positioned at suction tube 2.
Drag head 10 and suction tube 2 illustrate in the position reduced, and wherein, drag head 10 is shelved on water-bed 6.In use, excavate boats and ships 1 DD navigation on excavation direction, and pull drag head 10 on water-bed 6.
Drag head 10 and suction tube 2 are connected to cable 4, and this cable 4 is controlled by cable controller 5.In the stage casing of suction tube 2, suction tube 2 can be connected to another cable 4 ' controlled by another cable controller 5 '.Another cable controller and cable controller are mainly used in promoting and reducing suction tube 2.
Cable controller 5 comprises the first cord control devise and the second cord control devise, and in this case, this first cord control devise is formed by controlled winch 51.
Cable controller 5 also can comprise control unit 55 grade to control the first cord control devise, the second cord control devise and another cord control devise.Control unit 55 can be free-standing control unit, maybe can be arranged to coordinate with other remote control units.Control unit 55 can be computer.Control unit 55 also can be arranged through the instruction that user interface receives operating personnel.
Second cord control devise can be heave compensator, and in this case, this heave compensator is formed by multiple pulley 52, and at least one pulley 52 can be moved up in the side of the rotation perpendicular to pulley 52 by actuator 53.In FIG, actuator 53 is the hydraulic actuators comprising cylinder and piston, and piston can move up and down in the cylinder.Moveable pulley 52 is connected to cylinder.Actuator 53 is also under the control of control unit 55.
Drag head 10 comprises two critical pieces: drag head main body 11 and baffle plate 12.The side of drag head main body 11 is connected to suction tube 2 by suitable interface unit 13.Drag head main body 11 and suction tube 2 (lower end) can also be formed as a whole.
Drag head main body 11 can have any suitable shape, and its main purpose is formation one Room, can produce negative pressure in the chamber to excavate material from water-bed 6 with vacuum draw.Pump 21 can be provided to produce the negative pressure needed.Pump 21 can be positioned at and to excavate on boats and ships 1 (as shown in Figure 1) and/or be positioned at drag head 10 place or be positioned near drag head.Drag head 10 can comprise nozzle 22 and loosen to make water-bed 6 to produce water spray.Water jet pump 23 and injection pipe 24 can be had.
Baffle plate 12 is moveable parts of drag head 10.
Baffle plate 12 can move relative to drag head main body 11 the excavation characteristic changing drag head 10.In the embodiment as shown, baffle plate is arranged on the tail end of drag head 10, and can rotate around rotation RA, and this rotation extends perpendicular to the plane of the figure of Fig. 1, that is, be parallel to water-bed 6 and be generally perpendicular to excavation direction DD.Make baffle plate 12 rotate to lower position (counter clockwise direction in Fig. 1) and cause darker excavation and higher husky water ratio.
Drag head 10 also can comprise valve 14.As shown in Figure 1, valve 14 is connected to baffle plate 12, and is arranged to open and close the opening 18 in baffle plate 12.Or valve 14 can be connected to drag head main body 11, and be set to open and close opening 15 in drag head main body 11.
In FIG, schematically show only drag head 10.In Fig. 2 a to Fig. 2 c and figure 3 illustrates the details of drag head 10 according to the embodiment of the present invention.
Fig. 2 a to Fig. 2 c illustrates in greater detail the excavating equipment according to embodiment.
Fig. 2 a schematically shows the stereogram of the excavating equipment excavating material from water-bed 6.Excavating equipment comprises drag head main body 11 and is connected to the baffle plate 12 of drag head main body 11 in a movable manner.As shown in Fig. 2 a, baffle plate can rotate around rotation RA, but baffle plate 12 and drag head main body 11 also can have alternative relative motion, such as, and the translational motion that can be combined with rotary motion.
Baffle plate 12 along predetermined path movement, and can have predetermined one-movement-freedom-degree, and this degree of freedom is represented by particular range.According to the embodiment shown in Fig. 2 a to Fig. 2 c and Fig. 3, baffle plate can rotate on a rotating range relative to drag head main body 11, this scope normally 50 °.
Bias unit 60 is arranged on the top of excavating equipment, and this bias unit is connected to baffle plate 12 and drag head main body 11, and this bias unit is arranged to produce between drag head main body 11 and baffle plate 12 and apply bias force.Baffle plate 12 pushes in water-bed 6 by bias force on the direction be rotated down.
In the predetermined portions of this scope, (such as, in the top 25% of this scope) applies bias force.In the rotating range mentioned above normally example of 50 °, in top 25%, apply bias force cause the bias force being applied to baffle plate 12 in 12.5 °, top.Certainly, biased part can be any suitable percentage, such as, and 40%, 60%, 80 or 100%.In the remainder (except 100%) of this scope, baffle plate 12 is not biased.
Different bias units 60 can be used, such as, torsionspring 61 or disc spring 63.
Power transmission structure 62 can be provided so that bias unit (such as, torsionspring 61 or disc spring 63) is mounted to excavating equipment, and guarantee that bias force is applied to baffle plate 12.This will hereafter explain in more detail.
Fig. 2 a shows the torsionspring 61 at the top of excavating equipment in (in use) perpendicular to excavation direction DD and on the direction being parallel to water-bed 6.Rod member 621 (parts of power transmission structure 62) is vertically mounted to torsionspring 61 towards the tail end of excavating equipment and torsionspring 61.Rod member 621 can rotate around longitudinal axis 625.
Power transmission structure 62 also comprises connecting rod 622, and this connecting rod is rotationally attached to the far-end of the first rod member 621 forming rotation 627.
As shown in Fig. 2 a, connector is arranged on the top of baffle plate 12 as the parts of power transmission structure 62, and in this case, this baffle plate is formed by two projection pieces 623.Projection piece 623 is rotationally attached to the connecting rod 622 forming rotation 624.
Connecting rod 622 and rod member 621 by rotatable and slidably connecting portion be connected.Connecting rod is included in the groove that the top section of connecting rod 622 extends, and rod member 621 is such as connected with connecting rod slidably by bolt.
As clearlying show that in figure 2 c, this schematically describes the lateral view of excavating equipment, and rod member 621 has arm L1, and connecting rod 622 has arm L2.
Power transmission structure 62 is adjustable is applied to moment on baffle plate 12 to be arranged through bias unit 60.Can carry out regulating changing the position that connecting rod 622 is attached with connector (in this case, this connector is formed by two projection pieces 623).
Adjustment force transmission structure also allows to arrange predetermined scope.Stop can be provided with the movement of defining baffle, such as, stop can be provided to limit the movement of rod member 621, thus the maximum magnitude being used for baffle plate 12 is set.Stop can be provided to prevent the overburden of spring 61,63.
Such as, if rotation 624 is positioned at the upper opening (as shown in figure) provided by projection piece 623, so this scope can be 20 °, wherein, and baffle plate 12 biased (the biased part of 100%).
If rotation 624 is positioned at the second high opening provided by projection piece 623, so this scope can be 30 °, and wherein, 20 °, the top of this scope can be biased (the biased part of 66.6%).
If rotation 624 is positioned at the next to the lowest opening provided by projection piece 623, so this scope can be 40 °, and wherein, 20 °, the top of this scope can be biased (the biased part of 50%).
If rotation 624 is positioned at the minimum opening provided by projection piece 623, so this scope can be 50 °, and wherein, 20 °, the top of this scope can be biased (the biased part of 40%).
Can use spring assembly, such as, torsionspring 61, when being out of shape, this spring produces larger power.This is equally applicable to disc spring (with reference to figure 3, providing an example of disc spring).
Therefore, bias force is not constant in the part of scope.This can by relative to baffle plate 12 rotation RA position rotating axis 624 and 625 and by carefully selecting length L1 and L2 to overcome at least partly, namely, make according to the rotation of baffle plate around rotation RA, rod member 621 makes this rotation offset the activity of spring around the rotation of rotation 625.The conventional activity of torsionspring is given (see Fig. 4 a) by the linear relationship between the anglec of rotation and moment of torsion.In order to realize applying constant power on baffle plate 12, preload can be applied to torsionspring 61.Ratio D (D=(the d angle of the change of the change of the angle of torsionspring and the angle of baffle plate
spring/ d angle
baffle plate)) preferably offset spring activity.A similar example can be seen in fig. 4b, the figure shows along the ratio D of vertical curve and the angle along horizontal baffle plate 12.Point C is determined by the power of preload and expectation.Slope α is determined by the preload of spring rate and applying.
In fact, when adjustment force transmitting device 62, the ratio changing had between torsionspring 61 and baffle plate 12.When torsionspring, the moment on spring is multiplied by the moment that gearratio equals on baffle plate.
Can see from Fig. 2 a to Fig. 2 c, bias force is applied in the upper part of the mobile scope of baffle plate.In the low portion of this scope, because rod member 621 freely can be slided by the groove of connecting rod 622, so baffle plate 12 can move and not be subject to the impact of bias unit 60.
Fig. 3 shows alternative embodiment, wherein, can no longer have torsionspring 61, but arranges Hookean spring 63 (such as, disc spring 63), and this spring attaches is to protuberance 631.Torsionspring 61 is replaced by bar, and this bar can rotate around longitudinal main body axis 625 of this bar.Protuberance 631 can be formed as a part for rod member 621.
Disc spring 63 is arranged between the lower end of protuberance and drag head main body 11 or suction tube 2.
Will be appreciated that, in Fig. 2 a to Fig. 2 c and excavating equipment shown in Figure 3 can be combined with the excavation boats and ships 1 shown in Fig. 1.
The use of embodiment will be described in more detail now.Described embodiment can be used in the method for excavating material from the bottom.This method can relate to the excavation boats and ships 1 using and describe with reference to figure 1 and the excavating equipment described with reference to figure 2a to Fig. 3.
By excavating equipment is reduced to submarine site until drag head 10 is placed on water-bed 6 and can starts to excavate.Above-mentioned cable controller 5 can be used to complete reduction.
Next, by making excavation boats and ships navigate by water on excavation direction thus pull drag head 10 on excavation direction DD on water-bed 6 to complete excavation.
The bias force that bias unit 60 can be arranged to applying is arranged.Such as, torsionspring or Hookean spring can be adjusted to arrange bias force.Such as torsionspring 61 is set by rotating torsionspring 61 relative to excavating equipment.
But, regulate bias unit 60 also can comprise and use the alternative spring with different force characteristics to replace this spring, or change number of springs.
In addition, adjustable force transmission structure is to arrange the moment be applied to by bias unit 60 on baffle plate 12.Such as, adjustable connecting rod 622 is attached to the position of connector (such as, two projection pieces 623).
More than describe and be intended to be described, but not limit.It will be apparent to those skilled in the art that when not departing from the scope of described claim, it is conceivable that with simplification interchangeable and equivalent embodiment of the present invention for practice.
Claims (20)
1. for excavating the excavating equipment of material from water-bed (6), described excavating equipment comprises drag head main body (11) and baffle plate (12), described baffle plate (12) is connected to described drag head main body (11) and can moves in predetermined scope relative to described drag head main body (11), wherein, bias unit (60) is arranged between described drag head main body (11) and described baffle plate (12), described bias unit applies bias force in the biased part of described predetermined scope on described baffle plate (12), described biased part is at least 25% of described scope, wherein, described predetermined scope to regulate and to be limited by electromechanical stop.
2. excavating equipment according to claim 1, wherein, described biased part is at least 40% of described scope.
3. excavating equipment according to claim 1, wherein, described biased part is at least 60% of described scope.
4. excavating equipment according to claim 1, wherein, described biased part is 80% or 100% of described scope.
5. according to excavating equipment in any one of the preceding claims wherein, wherein, described baffle plate can rotate around rotation (RA) relative to described drag head main body (11), described predetermined scope is predetermined rotating range, in use, described rotation (RA) is in substantially parallel relationship to the bottom (6) and perpendicular to excavation direction (DD), and described predetermined scope is predetermined rotating range.
6. according to excavating equipment in any one of the preceding claims wherein, wherein, described bias unit (60) applies bias force on described baffle plate (12), is pushed on downward direction to make described baffle plate (12).
7. according to excavating equipment in any one of the preceding claims wherein, wherein, the described biased part of described scope is the upper part of described scope, and described baffle plate (12) moves freely in the remaining low portion of described scope.
8. according to excavating equipment in any one of the preceding claims wherein, wherein, described bias unit (60) is the preload force applied with setting that can regulate.
9. according to excavating equipment in any one of the preceding claims wherein, wherein, described bias unit (60) comprises spring assembly (61,63), described spring assembly (61,63) loads in the described biased part of described scope, applies bias force to make described spring assembly (61,63) on described baffle plate (12).
10. excavating equipment according to claim 9, wherein, described spring assembly comprises one or more torsionspring (61).
11. excavating equipments according to claim 9, wherein, described spring assembly comprises one or more disc spring (63).
12. according to excavating equipment in any one of the preceding claims wherein, wherein, described bias unit (60) is arranged between described baffle plate (12) and described drag head main body (11), or between the lower end being arranged on described baffle plate and suction tube (2).
13. according to excavating equipment in any one of the preceding claims wherein, and wherein, described bias unit (60) is connected to described excavating equipment by means of power transmission structure (62).
14. excavating equipments according to claim 13, wherein, described power transmission structure (62) be can regulate to arrange the moment be applied to by described bias unit (60) on described baffle plate (12).
15. according to claim 13 to the excavating equipment according to any one of 14, wherein, described power transmission structure (62) be can regulate to arrange described predetermined scope.
16. according to excavating equipment in any one of the preceding claims wherein, wherein, mobile parts are baffle plate (12), and described bias unit (60) is arranged to applying one bias force, this bias force produces the moment acted on described baffle plate (12), owing to acting on the gravity on described baffle plate (12), thus on described offset part is divided the average of described moment for acting at least 50% of moment on described baffle plate (12).
17. excavate boats and ships (1), and described excavation boats and ships comprise according in any one of the preceding claims wherein for excavating the excavating equipment of material from water-bed (6) and comprising the suction tube (2) making described excavating equipment be connected to described excavation boats and ships (1).
18. use the excavation boats and ships (1) comprising excavating equipment to excavate the method for material from water-bed (6), described excavating equipment comprises drag head main body (11) and baffle plate (12), described baffle plate (12) can move in predetermined scope relative to described drag head main body (11)
Wherein, described method comprises:
-by using electromechanical stop to regulate described predetermined scope,
-make described excavating equipment be reduced to water bottom location, wherein, drag head (10) is positioned on the described bottom (6),
-on excavation direction (DD), on the described bottom (6), pull described drag head (10) by described excavation boats and ships (1) to excavate,
Wherein, described excavating equipment comprises bias unit (60), described bias unit is arranged between described drag head main body (11) and described baffle plate (12), described bias unit applies bias force in the biased part of described predetermined scope on described baffle plate (12), wherein, described method comprises:
-regulate described bias unit (60) to arrange the bias force applied.
19. methods according to claim 18, wherein, described bias unit (60) is connected to described excavating equipment by means of the power transmission structure (62) that can regulate, and described method comprises:
-regulate described power transmission structure to arrange the moment be applied to by described bias unit (60) on described baffle plate (12).
20. use the excavating equipment according to any one of claim 1 to 16 to excavate the method for material from water-bed (6).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2010029A NL2010029C2 (en) | 2012-12-20 | 2012-12-20 | Dredging arrangement comprising a biasing device. |
| NL2010029 | 2012-12-20 | ||
| PCT/NL2013/050934 WO2014098600A1 (en) | 2012-12-20 | 2013-12-20 | Dredging arrangement comprising a biasing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104995356A true CN104995356A (en) | 2015-10-21 |
Family
ID=47790456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380072968.9A Pending CN104995356A (en) | 2012-12-20 | 2013-12-20 | Dredging arrangement comprising a biasing device |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20150330055A1 (en) |
| EP (1) | EP2935706A1 (en) |
| CN (1) | CN104995356A (en) |
| NL (1) | NL2010029C2 (en) |
| SG (1) | SG11201504869RA (en) |
| WO (1) | WO2014098600A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120922A (en) * | 2016-07-19 | 2016-11-16 | 王善明 | Mud scum cleaning plant |
| CN108824532A (en) * | 2018-07-05 | 2018-11-16 | 长江南京航道工程局 | A kind of free floating suction dredge(r) drag head at automatic adjustment rotation angle |
| CN109914505A (en) * | 2019-04-12 | 2019-06-21 | 中交天航滨海环保浚航工程有限公司 | Trailing suction hopper dredger drag head structure with removable grid |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1021095B1 (en) * | 2013-11-04 | 2016-01-18 | VAN ROMPAY BOUDEWIJN GABRIëL | DEVICE AND METHOD FOR REMOVING SLUDGE FROM THE BOTTOM OF A WATER FIELD |
| US10450720B2 (en) * | 2016-04-21 | 2019-10-22 | Boudewijn Gabriël Van Rompay | Device and method for removing alluvial deposits from the bed of a body of water |
| BE1023822B1 (en) * | 2016-06-20 | 2017-08-02 | Baggerwerken Decloedt En Zoon N.V. | Device and method for depositing material on an underwater bottom |
| KR20190066624A (en) | 2016-10-17 | 2019-06-13 | 매사추세츠 인스티튜트 오브 테크놀로지 | Piping-intrusion detection systems, devices, and methods |
| CN106996124A (en) * | 2017-05-08 | 2017-08-01 | 叶守棉 | Accrete clearing device under intelligent water |
| CN111576517A (en) * | 2020-05-14 | 2020-08-25 | 周鲲鹏 | Integrated high-pressure anti-blocking suction excavation dredging equipment |
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- 2013-12-20 US US14/654,349 patent/US20150330055A1/en not_active Abandoned
- 2013-12-20 CN CN201380072968.9A patent/CN104995356A/en active Pending
- 2013-12-20 WO PCT/NL2013/050934 patent/WO2014098600A1/en active Application Filing
- 2013-12-20 SG SG11201504869RA patent/SG11201504869RA/en unknown
- 2013-12-20 EP EP13818509.5A patent/EP2935706A1/en not_active Withdrawn
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| DE2531965A1 (en) * | 1975-07-17 | 1977-02-03 | Paul Fortmeier | Suction dredger for unblocking clogged openings - has additional opening for suction pipe with sealing flap connected to collection bucket |
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| CN106120922B (en) * | 2016-07-19 | 2018-11-30 | 王善明 | Mud scum cleaning plant |
| CN108824532A (en) * | 2018-07-05 | 2018-11-16 | 长江南京航道工程局 | A kind of free floating suction dredge(r) drag head at automatic adjustment rotation angle |
| CN108824532B (en) * | 2018-07-05 | 2023-07-11 | 长江南京航道工程局 | Automatic adjust rotation angle's self-propelled trailing suction hopper dredger drag head |
| CN109914505A (en) * | 2019-04-12 | 2019-06-21 | 中交天航滨海环保浚航工程有限公司 | Trailing suction hopper dredger drag head structure with removable grid |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150330055A1 (en) | 2015-11-19 |
| SG11201504869RA (en) | 2015-07-30 |
| WO2014098600A1 (en) | 2014-06-26 |
| NL2010029C2 (en) | 2014-06-23 |
| EP2935706A1 (en) | 2015-10-28 |
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Application publication date: 20151021 |