EP1605103A2 - Saugbaggervorrichtung und Gerät - Google Patents

Saugbaggervorrichtung und Gerät Download PDF

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Publication number
EP1605103A2
EP1605103A2 EP05011800A EP05011800A EP1605103A2 EP 1605103 A2 EP1605103 A2 EP 1605103A2 EP 05011800 A EP05011800 A EP 05011800A EP 05011800 A EP05011800 A EP 05011800A EP 1605103 A2 EP1605103 A2 EP 1605103A2
Authority
EP
European Patent Office
Prior art keywords
arm
dredging
operative
mechanical transmission
auxiliary
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
Application number
EP05011800A
Other languages
English (en)
French (fr)
Other versions
EP1605103B1 (de
EP1605103A3 (de
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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Publication date
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/de
Publication of EP1605103A3 publication Critical patent/EP1605103A3/de
Application granted granted Critical
Publication of EP1605103B1 publication Critical patent/EP1605103B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 or the use of suction and flow dredging pump installed on self-moving watercraft or barges.
  • 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.
  • the operating mode described above is adopted in dredging operations in rivers and at sea, so there is a considerable distance between the loading point and the unloading point and when the value of the collected material offsets the cost of transportation.
  • a second known operating mode for executing dredging work consists of using a suction-flow pump.
  • suction-flow dredging pumps are installed aboard watercraft, to be able to thrust the dredged material to considerable distances with a pipeline supported by variously shaped floats. Moreover, this operating mode allows to perform the unloading or storage operations in a single collection point.
  • 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.
  • 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)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Centrifugal Separators (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Earth Drilling (AREA)
EP05011800A 2004-06-10 2005-06-01 Saugbaggervorrichtung und Gerät Active EP1605103B1 (de)

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 true EP1605103A2 (de) 2005-12-14
EP1605103A3 EP1605103A3 (de) 2006-04-05
EP1605103B1 EP1605103B1 (de) 2010-05-19

Family

ID=34937127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05011800A Active EP1605103B1 (de) 2004-06-10 2005-06-01 Saugbaggervorrichtung und Gerät

Country Status (4)

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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4107802A (en) * 1976-05-25 1978-08-22 Compagnie Generale Pour Les Developpements Operationnels Des Richesses Sous-Marines "C. G. Doris" Apparatus for releasing submerged floats
US4242816A (en) * 1977-06-23 1981-01-06 Societe Anonyme Francaise Du Ferodo Dredger having a two-part boom
GB2126627A (en) * 1982-07-14 1984-03-28 Toyo Denki Kogyosho Co Ltd Dredging apparatus
WO1987005649A1 (en) * 1986-03-17 1987-09-24 Lännen Konepaja Oy Dredger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4107802A (en) * 1976-05-25 1978-08-22 Compagnie Generale Pour Les Developpements Operationnels Des Richesses Sous-Marines "C. G. Doris" Apparatus for releasing submerged floats
US4242816A (en) * 1977-06-23 1981-01-06 Societe Anonyme Francaise Du Ferodo Dredger having a two-part boom
GB2126627A (en) * 1982-07-14 1984-03-28 Toyo Denki Kogyosho Co Ltd Dredging apparatus
WO1987005649A1 (en) * 1986-03-17 1987-09-24 Lännen Konepaja Oy Dredger

Also Published As

Publication number Publication date
DE602005021278D1 (de) 2010-07-01
EP1605103B1 (de) 2010-05-19
ITPR20040041A1 (it) 2004-09-10
EP1605103A3 (de) 2006-04-05
ATE468441T1 (de) 2010-06-15

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