EP1605103B1 - Drague suceuse et appareil. - Google Patents

Drague suceuse et appareil. Download PDF

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Publication number
EP1605103B1
EP1605103B1 EP05011800A EP05011800A EP1605103B1 EP 1605103 B1 EP1605103 B1 EP 1605103B1 EP 05011800 A EP05011800 A EP 05011800A EP 05011800 A EP05011800 A EP 05011800A EP 1605103 B1 EP1605103 B1 EP 1605103B1
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EP
European Patent Office
Prior art keywords
arm
dredging
operative
mechanical transmission
mechanical
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.)
Active
Application number
EP05011800A
Other languages
German (de)
English (en)
Other versions
EP1605103A2 (fr
EP1605103A3 (fr
Inventor
Angelo Zardi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zardi Costruzioni Di Zardi Angelo & C SNC
Original Assignee
Zardi Costruzioni Di Zardi Angelo & C SNC
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Application filed by Zardi Costruzioni Di Zardi Angelo & C SNC filed Critical Zardi Costruzioni Di Zardi Angelo & C SNC
Publication of EP1605103A2 publication Critical patent/EP1605103A2/fr
Publication of EP1605103A3 publication Critical patent/EP1605103A3/fr
Application granted granted Critical
Publication of EP1605103B1 publication Critical patent/EP1605103B1/fr
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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
    • E02F3/8816—Mobile land installations
    • E02F3/8825—Mobile land installations wherein at least a part of the soil-shifting equipment is mounted on a dipper-arm, backhoes or the like

Definitions

  • the present invention relates to a dredging device and apparatus.
  • said systems provide for the use of clamshell, self-dumping or scraper bucket.
  • buckets are containers applied to the arms of the excavators which, with appropriate movements, load and empty themselves.
  • Excavators that operate the various types of buckets can have cable or be hydraulically actuated.
  • the latter are technical more advanced and allow a broad range of materials moving works, profiling, earthworks, and they can also perform other operations with the aid of additional hydraulic fittings, able to actuate devices supported by the arm of the excavator itself.
  • hydraulic excavators have, in fact, replaced cable excavators, which are also awkward to operate, bulky, noisy and uncomfortable for the operator.
  • hydraulic excavators have an excellent cost/productivity ratio when working on dry land, they do have some important drawbacks when they are used to perform dredging work.
  • a second known operating mode for executing dredging work consists of using a suction-flow pump.
  • a second disadvantage of this kind of pumps is their poor transportability from one site to another, which forces operators to provide for their dismantling to complete the transport operation.
  • suction-flowing dredging pumps applicable to the arms of hydraulic excavators, instead of the bucket.
  • a dredger apparatus ( WO 87/05649 ) comprising a scoop mounted on a boom arrangement, and a suction device including a dredger pump mounted on the scoop and a discharge pipe arrangement.
  • the main drawback of the aforementioned technical solution is the limited distance which can be reached by the arm of the excavator and the consequent reduced depth that can be attained.
  • An object of the present invention is to eliminate the aforementioned drawbacks, proposing a dredging device and apparatus able to perform dredging work at greater distances and/or depths than the prior art.
  • Another object of the present invention is to propose a dredging device and apparatus that are easily manoeuvrable by an operator.
  • a further object of the present invention is to provide a dredging device and apparatus that can be rapidly moved from one digging area to another, in order not to remain buried by material that may slide onto them during deep dredging.
  • Another object of the present invention is to propose a dredging device and apparatus that have a broad operating range for dredging, being able to unload the dredged material even at considerable distance from the digging area.
  • Yet a further object of the present invention is to provide a dredging device that is easy to maintain and able to be installed on an excavator, in order to reduce investments for the acquisition of costly specific dredging means.
  • Another object of the present invention is to provide a dredging device and apparatus that are easy to transport.
  • An additional object of the present invention is to obtain the aforesaid results within the context of a rational, reliable embodiment.
  • the dredging device in accordance with the invention is globally designated by the number 1.
  • the device 1 comprises an operative arm 2 whereto are connected dredging means 3, able to be immersed in a liquid, typically in river or sea water.
  • the operative arm 2 is so shaped as to generate a hydrostatic buoyancy whose value is just lower than the sum of the weights of the arm itself and of the dredging means, so that said means are submerged deep into the liquid by effect of the difference between the sum of said weights and the hydrostatic buoyancy.
  • the dredging means 3 comprise at least a dredging pump.
  • the dredging means 3 comprise an auxiliary arm 5 having a first end 5a hinged to the operative arm 2 and a second, free end 5b, whereto is fastened a dredging pump 6.
  • said dredging pump 6 is a suction-flow dredging pump.
  • the operative arm 2 and the auxiliary arm 5 are internally hollow and they have such a volume as to determine a hydrostatic buoyancy that is just lower than the sum of the weights of the arms 2 and 5 of the dredging pump 6.
  • the device 1 comprises at least one floating body 4 integrally connected to the operating arm 2, positioned superiorly thereto.
  • the floating body 4 has such a volume as to determine, when it is immersed in the liquid, a hydrostatic buoyancy that is slightly lower than the sum of the weight of the operating arm 2 and of the auxiliary arm 5 with the weight of the dredging pump 6 and of a discharge pipeline 62.
  • the floating body/bodies may also be connected inferiorly or laterally to the operative arm 2 and/or to the auxiliary arm 5.
  • the operative arm 2 is actuated by a hydraulic or pneumatic actuator (not shown).
  • the device 1 can be connected to a mechanical arm 51 of a self-propelled machine, typically an excavator 52, thereby defining a single dredging apparatus, globally designated by the number 50.
  • the operative arm 2 of the device 1 is hinged to an end of the mechanical arm 51 of the excavator 52, instead of the bucket (not shown).
  • the operative arm 2 is actuated by a same actuator 53, typically hydraulic, which normally actuates the bucket.
  • the operative arm 2 is connected to a command rod 54 by means of a mechanical transmission.
  • the command rod 54 is directly operated by the actuator 53 and the mechanical transmission is of the type operating exclusively by traction.
  • the mechanical transmission is preferably a chain 55a having a first end link 60 connected to the command rod 54 and a second end ring 61 connected to a pivot pin 56 fastened to the operative arm 2.
  • the mechanical transmission may be constituted by two connecting rods 55b, 55c, hinged to each other and respectively connected to the pivot pin 56 of the operative arm 2 and to the command rod 54.
  • the mechanical transmission is obtained by means of a plate-like body 55d, whereon were obtained a hole 75 and a slot 85, able to be coupled respectively to the command rod 54 and to the pivot pin 56 connected to the operative arm 2.
  • the auxiliary arm 5 may be actuated by a hydraulic actuator and, between the operative arm 2 and the auxiliary arm 5, there may be a mechanical transmission of the type shown in Figures 2a, 2b, 2c described above.
  • the mechanical transmission is obtained by means of a pair of links 90, 91 connected by a steel cable 92.
  • the link 90 is connected to the pivot pin 56 fastened to the operative arm 2, whilst the link 91 is connected to the command rod 54 (or vice versa).
  • the discharge pipeline 62 of the highly flexible type, suitable for transporting the dredged material.
  • Said pipeline 62 preferably extends along the whole auxiliary arm 5 and the operative arm 2 and it is supported in multiple points by both rigid and elastic supports. After reaching the end of the auxiliary arm 5 and the end of the operative arm 2, the pipeline 62 moves away to be connected to a floating pipe 63, thereby forming a single discharge line of the dredging pump.
  • the region of the auxiliary arm 5 and of the operative arm 2 whereat the discharge pipeline 62 moves away from the arm itself can be variable, according to operative requirements.
  • the discharge pipeline 62 must always be supported in such a way as to prevent the formation of kinks which may compromise its integrity when the operative arm 2 is lifted out of the water.
  • connection between the discharge pipeline and the floating pipe preferably occurs by means of a quick coupling joint, in such a way as to enable an easy disengagement of the pipeline itself, in order to render the dredging apparatus independent and to facilitate its accessibility by an operator, e.g. for maintenance requirements.
  • the operative arm 2 whereto the auxiliary arm 5 and the pump 6 are connected, is connected to the mechanical arm 51 of the excavator 52.
  • the mechanical arm of the excavator is lifted and the discharge pipeline 62 of the pump 6 is engaged to the floating pipe already readied in the water.
  • the connection between the pipeline and the pipe preferably occurs by means of the quick coupling joint.
  • the operative arm 2 and/or the auxiliary arm 5, being shaped in such a way as to receive a hydrostatic buoyancy that is just lower than the sum of their weights with the weight of the pump 6, allow a complete extension both of the arm 51 of the excavator, and of the operative arm itself, without overloading it.
  • the only loads that actually bear down on the mechanical arm of the excavator are the difference between the hydrostatic buoyancy generated by the operative arm 2 and possibly by the auxiliary arm 5 and the total weight, given by the weight of the operative arm, by the weight of the auxiliary arm, by the weight of the pump 6, by the weight of the discharge pipeline 62 and by the weight of any floating body.
  • the invention achieves important advantages.
  • a dredging apparatus and device in accordance with the present invention allow a considerable increase in dredging distance and depth in water with respect to known solutions, described above. Moreover, by effect of the lightening of the structural loads induced by the hydrostatic buoyancy generated by the complex of the operative arm 2 and auxiliary arm 5, such a dredging apparatus significantly reduces the consumption of energy needed to actuate the mechanical arm of the excavator.
  • connection between the discharge pipeline 62, coming from the dredging pump 6, and the floating pipe provides the mechanical arm 51 with great freedom of motion, both in elevation and training.
  • the technical solution mentioned above allows easily to move the dredging apparatus and easily to access the pipeline and the pump, e.g. for maintenance and repair purposes.
  • Another important advantage is the possibility of mounting the device 1 on existing excavators, thereby reducing investments for the acquisition of expensive specific means, which are not usable for other purposes.
  • a dredging device and apparatus in accordance with the present invention can easily be transported, with no need to be dismantled in numerous sections.
  • Another advantage is the presence of a mechanical transmission operating exclusively by traction, interposed between the operative arm 2 and the mechanical arm 51 and connected to them. Said mechanical transmission prevents the mechanical arm 51 from thrusting the operative arm 2 (and hence the auxiliary arm 5) deep, preventing the dredging pump 6 from sinking excessively into the material to be dredged, becoming clogged.
  • the operative arm 2, the auxiliary arm 5 and the pump 6, therefore, drop deep into the water solely by effect of the difference between their own weight and the hydrostatic buoyancy generated by the operative arm and by the auxiliary arm, if present.
  • a similar mechanical transmission can also be interposed between the operative arm 2 and the auxiliary arm 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Earth Drilling (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Claims (18)

  1. Drague suceuse comprenant :
    un véhicule automoteur agricole (52) avec au moins un bras mécanique (51), une drague (1) avec au moins un bras opérateur (2) fixé par des charnières à une extrémité du bras mécanique (51) du véhicule automoteur (52), et des moyens de dragage (3) reliés audit bras opérateur (2) et pouvant être immergés dans un liquide, caractérisée en ce que ladite drague (1) comprend au moins un corps flottant (4) totalement relié audit bras opérateur (2) et avec un volume tel qu'il exerce, en immersion dans le liquide, une poussée hydrostatique, dont la valeur est un peu inférieure au poids total du bras et des moyens de dragage (3).
  2. Drague suceuse selon la revendication 1, caractérisée en ce que ledit corps flottant (4) est relié dans le haut au bras opérateur (2).
  3. Drague suceuse selon la revendication 1, caractérisée en ce que ledit corps flottant (4) est relié dans le bas au bras opérateur (2).
  4. Drague suceuse selon la revendication 1, caractérisée en ce que ledit corps flottant (4) est relié sur le côté au bras opérateur (2).
  5. Drague suceuse selon la revendication 1, caractérisée en ce que lesdits moyens de dragage (3) comprennent au moins une pompe de dragage (6).
  6. Drague suceuse selon la revendication 1, caractérisée en ce que lesdits moyens de dragage (3) comprennent :
    au moins un bras auxiliaire (5) relié audit bras opérateur (2) ;
    au moins une pompe de dragage (6) reliée audit bras auxiliaire (5).
  7. Drague suceuse selon la revendication 6, caractérisée en ce que le bras auxiliaire (5) est fixé par des charnières à une extrémité du bras opérateur (2).
  8. Drague suceuse selon les revendications 6 ou 7, caractérisée en ce qu'elle comprend une transmission mécanique pour actionner le bras auxiliaire (5), ladite transmission mécanique fonctionnant uniquement en traction et se situant entre ledit bras opérateur (2) et ledit bras auxiliaire (5) auxquels elle est raccordée.
  9. Drague suceuse selon la revendication 8, caractérisée en ce que ladite transmission mécanique consiste pour l'essentiel en une chaîne (55a).
  10. Drague suceuse selon la revendication 8, caractérisée en ce que ladite transmission mécanique comprend deux éléments en forme de tige (55b, 55c) fixés entre eux par des charnières, un premier desdits éléments en forme de tige (55b, 55c) ayant une extrémité reliée au bras opérateur (2) et un deuxième desdits éléments en forme de tige (55b, 55c) ayant une extrémité reliée au bras auxiliaire (5).
  11. Drague suceuse selon l'une quelconque des revendications précédentes, caractérisée en ce que ledit bras opérateur (2) est actionné par au moins un actionneur.
  12. Drague suceuse selon la revendication 11, caractérisée en ce que ledit actionneur est hydraulique ou pneumatique.
  13. Drague suceuse selon la revendication 6, caractérisée en ce que ledit bras auxiliaire (5) est creux à l'intérieur.
  14. Drague suceuse selon la revendication 13, caractérisée en ce que ledit bras auxiliaire (5) présente un volume tel qu'il exerce une poussée hydrostatique, dont la valeur est un peu inférieure au poids total du bras et de la pompe de dragage (6).
  15. Drague suceuse selon la revendication 6, caractérisée en ce qu'elle comprend au moins un corps flottant totalement relié audit bras auxiliaire (5).
  16. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend une transmission mécanique pour actionner le bras opérateur (2), ladite transmission mécanique fonctionnant uniquement en traction et se situant entre ledit bras mécanique (51) du véhicule automoteur (52) et ledit bras opérateur (2) auxquels elle est raccordée.
  17. Appareil selon la revendication 16, caractérisé en ce que ladite transmission mécanique consiste pour l'essentiel en une chaîne (55a).
  18. Appareil selon la revendication 16, caractérisé en ce que ladite transmission mécanique comprend deux éléments en forme de tige (55b, 55c) fixés entre eux par des charnières, un premier desdits éléments en forme de tige (55b, 55c) ayant une extrémité reliée au bras opérateur (2) et un deuxième desdits éléments en forme de tige (55b, 55c) ayant une extrémité reliée au bras mécanique (51) du véhicule automoteur (52).
EP05011800A 2004-06-10 2005-06-01 Drague suceuse et appareil. Active EP1605103B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000041A ITPR20040041A1 (it) 2004-06-10 2004-06-10 Dispositivo ed apparato draganti.
ITPR20040041 2004-06-10

Publications (3)

Publication Number Publication Date
EP1605103A2 EP1605103A2 (fr) 2005-12-14
EP1605103A3 EP1605103A3 (fr) 2006-04-05
EP1605103B1 true EP1605103B1 (fr) 2010-05-19

Family

ID=34937127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05011800A Active EP1605103B1 (fr) 2004-06-10 2005-06-01 Drague suceuse et appareil.

Country Status (4)

Country Link
EP (1) EP1605103B1 (fr)
AT (1) ATE468441T1 (fr)
DE (1) DE602005021278D1 (fr)
IT (1) ITPR20040041A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353002A1 (fr) * 1976-05-25 1977-12-23 Doris Dev Richesse Sous Marine Dispositif de largage de flotteurs immerges
FR2395361A1 (fr) * 1977-06-23 1979-01-19 Ferodo Sa Drague
SE462289B (sv) * 1982-07-14 1990-05-28 Toyo Denki Kogyosho Co Ltd Muddringsanordning
FI81864C (fi) * 1986-03-17 1993-01-13 Laennen Tehtaat Oy Sugmuddringsanordning

Also Published As

Publication number Publication date
EP1605103A2 (fr) 2005-12-14
ATE468441T1 (de) 2010-06-15
DE602005021278D1 (de) 2010-07-01
ITPR20040041A1 (it) 2004-09-10
EP1605103A3 (fr) 2006-04-05

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