EP1362954A1 - Tête de fraisage pour un engin de chantier - Google Patents

Tête de fraisage pour un engin de chantier Download PDF

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Publication number
EP1362954A1
EP1362954A1 EP02405917A EP02405917A EP1362954A1 EP 1362954 A1 EP1362954 A1 EP 1362954A1 EP 02405917 A EP02405917 A EP 02405917A EP 02405917 A EP02405917 A EP 02405917A EP 1362954 A1 EP1362954 A1 EP 1362954A1
Authority
EP
European Patent Office
Prior art keywords
milling
unit
housing
tool
shaft
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.)
Withdrawn
Application number
EP02405917A
Other languages
German (de)
English (en)
Inventor
Fredi Stury
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.)
Fredy Stury AG
Original Assignee
Fredy Stury AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fredy Stury AG filed Critical Fredy Stury AG
Publication of EP1362954A1 publication Critical patent/EP1362954A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits
    • B28D1/188—Tools therefor, e.g. having exchangeable cutter bits with exchangeable cutter bits or cutter segments
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
    • E01C23/088—Rotary tools, e.g. milling drums
    • E01C23/0885—Rotary tools, e.g. milling drums with vertical or steeply inclined rotary axis
    • 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
    • E02F3/06—Dredgers; Soil-shifting machines mechanically-driven with digging screws
    • 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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/50—Methods or devices for preventing dust by spraying or sucking

Definitions

  • the present invention relates to an attachment to a construction machine.
  • the object of the present invention is that mentioned and others Eliminate disadvantages of the prior art.
  • the object is achieved by an attachment at the beginning mentioned genus solved, which in the characterizing part of Claim 1 is defined.
  • the attachment 1 shown in Fig. 1 is on the boom 2 of an excavator appropriate.
  • the excavator is expediently one Small excavators. It is understood that the attachment 1 is also of other types of construction machinery.
  • the device 1 comprises a unit 5 and a working head 20 or 30, which is connected to the unit 5 or can be connected.
  • the unit 5 (FIG. 2) has a housing 6 in which a motor 51 (FIG. 6) and a corresponding gearbox are housed.
  • the motor 51 is on Hydraulic motor, expediently a radial piston motor.
  • Out the unit 5 projects a section 12 of a drive shaft and on the free The end of this shaft section 12 is the head 30 of the present Attachment 1 attached.
  • this head 30 is one Circular milling cutter or a milling head executed
  • the housing 6 has a hollow main part or a jacket 7, which is essentially tubular or sleeve-shaped so that it is against each other opposite ends of this main part 7 openings. 2 lies one of these openings is at the top and the other of these openings is at the bottom. On the end portions of the jacket 7, which surround said openings one flange 71 or 72 attached.
  • the main housing part 7 has essentially the shape of the shell of a cylinder.
  • the outline of the cylinder 7 does not necessarily have to be circular.
  • the Floor plan or cross section of the cylinder 7 can also be a composite To have shape.
  • the cross section of a cylinder can have two arcs diameters of different sizes, the angular length of which is 180 degrees or something more. These arcs face each other, and in such a way that their ends face each other. About each other the circular arcs are connected to each other at opposite ends, if necessary with the interposition of a straight line.
  • Such Design of the cross section of the housing shell 7 is for housing a hydraulic motor and an associated gearbox very much expedient because the gaps between those accommodated here Components of the unit and the peripheral wall 7 of the housing 6 can be kept small.
  • the housing 6 further comprises a plate 8, which of the mentioned and shown in Fig. 2 above opening of the housing shell 7 is assigned. consequently this plate 8 closes the upper opening in the housing wall 7
  • End part of the unit housing 6 is for connecting the attachment 1 determines the boom 2 of the excavator 3 or to another machine and educated.
  • the prior art includes coupling devices, which make it possible to attach various attachments to the boom 2 of an excavator 3 to join.
  • a coupling device is particularly advantageous Owner of the present property right, which, for example, in EU-PS 0 143 074 is disclosed. This device enables a quick and easy replacement of the boom 2 of the excavator 3rd attachments to be connected.
  • the present coupling device 10 has two connectable to each other Sections 9 and 11.
  • the first of these coupling sections 9 is on Boom 2 of the excavator attached.
  • the other of the above Coupling section 11 is attached to the attachment.
  • This Coupling section 11 is on the outside of the upper Housing end plate 8 attached.
  • this includes Coupling section 11 two plates one behind the other, of which only the front plate 111 can be seen in FIG. 2.
  • This coupling plate 111 are practically at right angles to the end plate 8 and they are there at a distance from each other.
  • In the coupling plates 111 are each other corresponding pairs of openings 112 and 113 through which Coupling bolts (not shown) can go through.
  • the one on the boom 2 attached section 9 of the coupling device 10 also has two Coupling plates 91 with corresponding bolt openings 112 and 113. in the coupled state overlap the plates 91 of one Coupling section 9, the plates 111 of the other coupling section 11, the bolts (not shown) through all openings 112 and 113 go through and thereby the two sections 9 and 11 of the Hold coupling device 10 together.
  • the upper cover plate 8 of the housing 6 is on top Housing flange 71 or with the upper end of the Main housing part 7 firmly connected. Since practically all of the stress, which comes from the attachment 1, through the connection point between the main housing part 7 and the housing cover plate 8 to the extension arm 2 is transferred, the connection of the cover plate 8 to the Main housing part 7 are dimensioned accordingly. Such a firm one Connection can be made, for example, using screws (not shown) to reach.
  • the unit 5 also includes a hollow shaped or intermediate piece 15, which the second or in Fig. 2 underlying opening in the jacket 7 of Housing 6 is assigned.
  • the base body 16 of this intermediate piece 15 is basically conical, so that this base body 16 is a first or larger or upper base area 17 and a second or smaller or has lower base 18. That area of the molding 15 which surrounds the larger base area 17, is provided with a flange 19, which is assigned to the underside of that flange 72 which is at the bottom End of the housing shell 7 is attached. These two flanges 19 and 72 are firmly connected. This connection is expedient also accomplished with screws (not shown).
  • the Housing6 below projecting section 12 of the drive shaft. That End region of the intermediate piece 15, which the smaller base area 18th is a bearing (not shown) for the protruding Shaft section 12 executed. A small length of this wave section 12 protrudes from the bearing or from the narrower area 18 of the shaped piece 15 out.
  • the working head 30 of the attachment 1 is the working head 30 of the attachment 1 in a manner known per se interchangeably connected.
  • the Working head 30 a milling head. This milling head 30 is designed so that it is Material of the surface to be processed can loosen.
  • the milling head 30 has a disk-shaped base body 31, which with the free end of the protruding portion 12 of the drive shaft in the mentioned way is coupled. This shaft section 12 is in the middle of the Milling head base body 31 connected to this.
  • the bottom of the Base body 31 of the milling head 30 is another and also assigned disk-shaped plate or a plate 32. About the The large surface facing the milling head base 31 is the plate 32 Base body 31 of the milling head 30 is also interchangeably attached.
  • the Plate 32 serves as a carrier for milling tools 35. These milling tools 35 are on the side facing away from the milling head base body 31, i.e. at the bottom Side of the plate 32 interchangeably attached.
  • the milling tools 35 Spread over the surface of the lower side of the support plate 32 so that the release the material layer 4 to be machined over the entire surface of the milling head 30 runs as evenly as possible and that the milling head 30 thus during operation of the attachment 1 experiences as little vibration as possible. This results in the attachment running smoothly.
  • Such an arrangement the milling cutter 35 is shown in FIG. 3, which is explained in more detail below is explained.
  • the respective milling tool 35 (FIGS. 4 and 5) comprises a cutting tool 36, which can be a diamond, for example.
  • This cutting tool 36 is held in a known holding device 37.
  • This holding device 37 is designed such that the cutting tool 36 in it Device 37 interchangeable and optionally also adjustable is.
  • This holding device 37 is also designed so that the Cutting tool 36 via this holding device 37 to a support block 38 is connected, which is a further component of the milling tool 35 represents.
  • the support block 38 is partially hollow. In a top view of the support block 38 has the outline of an elongated hexagon, as can be seen from Fig. 5. 3 is the location of each Milling tools 35 on the underside of the support plate 32 using the mentioned hexagons 38 indicated.
  • the support block 38 has the contour of a trapezoid with inclined sides or walls 41 of different lengths converging and 42.
  • the first of these inclined walls 41 runs when the milling tool 35 is mounted on the milling head 30, practically horizontally and it is for interchangeable connection on the underside of the plate 32 of the milling head 30 determined and trained.
  • the first inclined wall 41 of the support block 38 can therefore also be referred to as the top wall of the support block 38.
  • In 4 is a section of the carrier plate 31 and a section out of the substrate 4 to be machined with the milling head 30.
  • the longitudinal axis A of the cutting tool 36 extends obliquely to described and horizontally extending connecting wall 41 of the support block 38, so that there is an angle alpha between the axis A of the Cutting tool 36 and the underside of the support plate 32 and between the axis A and the surface of the substrate 4.
  • the respective Milling tool 35 is arranged on the milling head 30 so that the axis A of the Cutting tool 36 tangential to the direction of rotation D (Fig. 3) of the milling head 30 runs and is directed against this direction of rotation D (Fig. 4). This regardless of how far the respective milling tool 35 is from the center of the milling head 30 is located.
  • the aforementioned inclination alpha of the axis A of the cutting tool 36 compared to a horizontal plane and thus also towards the machining substrate 4 is of the function of the milling head 30 important meaning. This is because this tendency enables alpha that the tip of the cutting tool 36 below the surface of the substrate 4 penetrates first and then, because the milling head 30 continues to rotate, the loosened Material of the substrate 4 lifts.
  • the size of the angle alpha depends on Factors which in the respective application of the present Attachment prevail. That is why it is useful if there are sentences with interchangeable milling tools 35, in which the angle alpha has different values.
  • the perpendicular to the axis A mentioned extend parallel to each other extending sides 47 and 48 of the support block 38 with the trapezoidal Profile.
  • the second inclined wall 49 of the trapezoidal block 38 runs practically parallel to said axis A and it is shorter than the first inclined wall 41.
  • the support block 38 also has longitudinal walls 39 and 40 on, which is between the side edges of the oblique extending or converging transverse walls 41 and 42 of the Support block 38 extend and so these transverse walls 41 and 42 together connect.
  • the individual milling tools 35 are along an in distributed substantially spiral path B.
  • a first milling tool 351 this row is in the beginning of spiral track B, this Milling tool 351 a small distance from the center S of the Carrying plates 32 is located.
  • This minimum distance of the milling tool 351 from Center S of the plate 32 is mainly by half the width of the Support block 38 of this milling tool 351 given.
  • the support block 38 in plan view the shape of an elongated hexagon.
  • the longitudinal direction of such an elongated support block 38 is essentially tangential to the spiral path B.
  • the distance also determines the distance of the beginning of the spiral B from the center S of the disc-shaped Carrier 32. From here, the spiral B opens in the direction of rotation D of the carrier 32.
  • the second milling tool 352 lying on the spiral B is located itself at a somewhat greater distance from the center S, the Longitudinal direction of its support block also at least essentially extends tangentially to the direction of rotation of the milling head 30, etc. In this way there are another three milling tools 353, 354 and 355 on spiral track B arranged.
  • the increasing distance between the individual milling tools 351 to 355 from the center S of the support plate 32 can also be specified in the manner by calling the radius on which the particular Milling tool 351 to 355.
  • the increase in individual radius can a constant or a variable value
  • the end located outside or from the center S of the carrier plate 32 the spiral B is at a distance from the outer edge 33 of the Carrier plate 32.
  • the carrier plate 32 which between the End of the spiral B and the outer edge 33 of the plate 32 are still further milling cutter 35 arranged.
  • the milling cutters 35 groups of which two are each diagonally opposite. The milling cutters 35 are within the assigned groups arranged the same.
  • Fig. 7 shows a further embodiment of the milling head 20, which is the Shaft 12 and the intermediate piece 15, however, in practically the same way can be assigned.
  • the base body 21 of this milling head 20 is in the essentially cylindrical.
  • Such a base body 21 has one cylindrical jacket wall 22 and an upper plate 23 and a lower Plate 24 on.
  • the upper plate 23 is with the upper edge of the jacket 22 and the lower plate 24 is firmly connected to the lower edge of the jacket 22.
  • the upper end plate 23 is flat and on the outside of this End plate 23, the drive shaft 12 is connected.
  • the lower one End plate 24 can either be flat or convex his.
  • the milling head 20 is with a plane
  • the lower plate 24 is shown and in the right half of FIG.
  • FIG. 8 shows a still further embodiment of the tool 25 of the present attachment 1.
  • This tool 25 is as an earth auger executed.
  • This drill 25 has a disc-shaped intermediate plate 26 on which is connected to the drive shaft 12. To those of the The drive shaft 12 facing away from the large surface of the intermediate plate 26 is the drill 25 connected at one end.
  • This drill 25 comprises a central handle 28, which represents an extension of the drive shaft 12.
  • This Stiffening stem 28 surrounds a spiral or snake body known per se 27 of the auger 25, which is almost to the free end of the handle 28th extends.
  • a plate 40 is attached, which for Longitudinal axis A of the earth auger is practically vertical.
  • this end plate 40 which faces the intermediate plate 26, ends Spiral or snake body 27.
  • the opposite side of the face plate 40 is equipped with inserts 34 which protrude from this plate surface. It can be hard metal inserts 34 or the above act described milling tools 35.
  • FIG. 6 is a diagram of a possible hydraulic drive of the shown attachment.
  • the radial piston motor already mentioned 51 is connected to a source T of oil via a pressure relief valve 53.
  • the Oil flows out of the engine 51 through a throttle 52 and a drain line P. out.
  • the size of the overpressure in valve 53 is adjustable. With help of a such pressure relief valve 53, it is possible in a simple manner Limit the torque of the motor 51 and thereby damage to Prevent device.
  • This spray device 50 has a base body 51, which by one at one end closed and curved pipe section is formed.
  • This base body 51 is essentially circularly curved, the diameter of this Circle corresponds to the diameter of the housing 6 of the unit 5.
  • This Base body 51 is assigned to the unit 5 so that it is between the Unit housing 6 and the working head 30 is arranged and that it with the unit housing 6 is approximately coaxial.
  • Openings performed which can be provided with nozzles 52. Through the Openings or nozzles 52 can be a liquid, advantageously water, from which Exit body 51 of spray device 50.
  • the openings or nozzles 52 are arranged and directed so that the liquid enters the work area of the tool 35 is injected. This liquid prevents dust, which arises during the operation of the tool into the environment of the Device arrives.
  • a hose 53 connected at one end, the other end to one known source (not shown) of the liquid is connected.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Shovels (AREA)
EP02405917A 2001-10-26 2002-10-28 Tête de fraisage pour un engin de chantier Withdrawn EP1362954A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH19662001 2001-10-26
CH19662001 2001-10-26

Publications (1)

Publication Number Publication Date
EP1362954A1 true EP1362954A1 (fr) 2003-11-19

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EP02405917A Withdrawn EP1362954A1 (fr) 2001-10-26 2002-10-28 Tête de fraisage pour un engin de chantier

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EP (1) EP1362954A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010014711A1 (de) * 2010-04-12 2011-10-13 Street Cut Gmbh Frässcheibe
WO2012116651A1 (fr) * 2011-03-03 2012-09-07 王萌 Pompe à volute du type à cylindre rotatif, dispositif d'admission de sédiments, racle à sédiments et procédé de raclage
DE102011106424A1 (de) * 2011-07-02 2013-01-03 Iwanautic S.L. Vorrichtung zum Fräsen von kreisförmigen Vertiefungen in Oberflächen
EP3719209A2 (fr) 2019-04-02 2020-10-07 Simex S.r.l. Ensemble d'excavation et machine d'exploitation comprenant ledit ensemble

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793732A (en) * 1988-01-21 1988-12-27 Jordon Robert L Pavement slot cutter
JPH01256606A (ja) * 1988-04-01 1989-10-13 Mitsugigawa Kenzai:Kk 舗装面切削機
US4968101A (en) * 1987-07-06 1990-11-06 Bossow Emory R Vertical asphalt and concrete miller
US5106166A (en) * 1990-09-07 1992-04-21 Joy Technologies Inc. Cutting bit holding apparatus
FR2725932A1 (fr) * 1994-10-20 1996-04-26 Lyon Agregats Outillage adaptable a l'extremite du bras articule d'un engin de travaux publics et permettant d'assurer la finition de parois, voutes et/ou sols d'ouvrages divers
EP0905321A1 (fr) * 1997-03-25 1999-03-31 Ito Co., Ltd. Machine de decoupage de revetement de route
WO1999063291A1 (fr) * 1998-06-02 1999-12-09 Tml Technik Gmbh Teleskopsysteme Procede et dispositif pour enlever et/ou oter en les brisant des couches ou des zones situees dans des substrats
US6085446A (en) * 1997-12-09 2000-07-11 Posch; Juergen Device for excavating an elongated depression in soil
DE20017850U1 (de) * 2000-10-18 2000-12-21 Kresken Josef Fräskopf zum Längs- und Querschneiden von Böden

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4968101A (en) * 1987-07-06 1990-11-06 Bossow Emory R Vertical asphalt and concrete miller
US4793732A (en) * 1988-01-21 1988-12-27 Jordon Robert L Pavement slot cutter
JPH01256606A (ja) * 1988-04-01 1989-10-13 Mitsugigawa Kenzai:Kk 舗装面切削機
US5106166A (en) * 1990-09-07 1992-04-21 Joy Technologies Inc. Cutting bit holding apparatus
FR2725932A1 (fr) * 1994-10-20 1996-04-26 Lyon Agregats Outillage adaptable a l'extremite du bras articule d'un engin de travaux publics et permettant d'assurer la finition de parois, voutes et/ou sols d'ouvrages divers
EP0905321A1 (fr) * 1997-03-25 1999-03-31 Ito Co., Ltd. Machine de decoupage de revetement de route
US6085446A (en) * 1997-12-09 2000-07-11 Posch; Juergen Device for excavating an elongated depression in soil
WO1999063291A1 (fr) * 1998-06-02 1999-12-09 Tml Technik Gmbh Teleskopsysteme Procede et dispositif pour enlever et/ou oter en les brisant des couches ou des zones situees dans des substrats
DE20017850U1 (de) * 2000-10-18 2000-12-21 Kresken Josef Fräskopf zum Längs- und Querschneiden von Böden

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 010 (M - 917) 10 January 1990 (1990-01-10) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010014711A1 (de) * 2010-04-12 2011-10-13 Street Cut Gmbh Frässcheibe
WO2012116651A1 (fr) * 2011-03-03 2012-09-07 王萌 Pompe à volute du type à cylindre rotatif, dispositif d'admission de sédiments, racle à sédiments et procédé de raclage
DE102011106424A1 (de) * 2011-07-02 2013-01-03 Iwanautic S.L. Vorrichtung zum Fräsen von kreisförmigen Vertiefungen in Oberflächen
EP3719209A2 (fr) 2019-04-02 2020-10-07 Simex S.r.l. Ensemble d'excavation et machine d'exploitation comprenant ledit ensemble

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