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EP0524470A2 - Fraise adaptée pour l'excavation - Google Patents

Fraise adaptée pour l'excavation Download PDF

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Publication number
EP0524470A2
EP0524470A2 EP92111364A EP92111364A EP0524470A2 EP 0524470 A2 EP0524470 A2 EP 0524470A2 EP 92111364 A EP92111364 A EP 92111364A EP 92111364 A EP92111364 A EP 92111364A EP 0524470 A2 EP0524470 A2 EP 0524470A2
Authority
EP
European Patent Office
Prior art keywords
digging
blades
hollow body
milling cutter
cutter according
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Withdrawn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
EP92111364A
Other languages
German (de)
English (en)
Other versions
EP0524470A3 (en
Inventor
Andreas Wehrle
Alfred Wehrle
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0524470A2 publication Critical patent/EP0524470A2/fr
Publication of EP0524470A3 publication Critical patent/EP0524470A3/de
Withdrawn legal-status Critical Current

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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
    • E02F3/18—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
    • 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

Definitions

  • the subject of the present invention is a motor-driven milling cutter, which rotates about its central axis in one direction or the other and is suitable for digging work and for processing banquets, and consists of at least one cylindrical and / or also of at least two flush, trapezoidal cross-section Truncated cones formed drum-like hollow body, on the surface of which knife-like digging tools are arranged at intervals from one another and offset from one another.
  • Such a milling machine is known, for example, from the German patent specification 28 05 593.
  • this type of construction it is still disadvantageous that the digging material jams behind the digging tools and thus requires a very large machine output is to push the accumulated digging material aside.
  • This milling machine can also only be operated in one direction of rotation.
  • the object of the present invention is to eliminate these disadvantages that previously existed and to design a milling machine of the type in question in such a way that a smaller machine output is sufficient for its operation and, moreover, operation in both directions of rotation is also possible.
  • the digging tools provided are a plurality of grave blades arranged on the casing of the hollow body, which protrude in the radial direction over the lateral surface of the hollow body and their row-shaped and preferably continuously arranged digging blades to form a screw conveyor along one or of several helical lines.
  • the soil loosened from the front digging blades reaches the conveyor trough formed by two screw conveyors and slides in this to the end of the same, where the soil exits and is ejected in a high arc.
  • each row of digging scoops has an ejection scoop that is only slightly inclined with respect to the hollow body axis and arranged at an angle to the last digging scoop.
  • the digging blades are arranged with transverse cutting blades that protrude into the conveyor troughs formed by two screw conveyors and so to speak as Scratches act that tear open the soil sliding backwards in the conveyor troughs.
  • the hollow body is articulated on a support arm so that it can be pivoted about a horizontal and / or vertical axis.
  • This special articulation of the hollow body makes it possible to excavate a trough, a trench with a flat sole, a trench with a channel-shaped sole or only the trench slopes or only flat banquets or the like. to edit.
  • the milling cutter has also proven to be useful for the milling cutter to be assigned a support arm which serves to hold it, and for the same to cover the upper mantle region of the milling cutter facing away from the soil or the ground, with the protective hood or the like open to the outside. is arranged.
  • the milling cutter 1 shown schematically in FIG. 1 is articulated about a horizontal axis of rotation S on a support arm 2 or the like arranged, for example, on a vehicle or the like, the milling head denoted by 3 also being only schematic from this vehicle via one shown drive 4 is rotated about its central axis 5 clockwise or counterclockwise.
  • This milling head 3 has the shape of an internally hollow drum, which is composed of two truncated cones labeled 6 and 7.
  • the outer surface 8 of the inner truncated cone 6 facing the drive 4 and the outer surface 9 of the outer truncated cone 7 enclose an obtuse angle x of 120 °.
  • the other angle y located between this lateral surface 9 of this outer truncated cone 7 and its disc-shaped outer surface 10 is the same size and is also 120 °.
  • the upper part 11 of this milling machine 1 is also covered by a protective hood designated by 12, which has an ejection opening designated by 13.
  • this milling cutter 1 which is shown schematically in FIG. 1, is now lowered in the manner shown against the surface 14 of the soil 15, then in FIG. 1 not particularly shown, eat on the outer surfaces 8 and 9 and also on the outer surface 10 of the digging tools arranged around its center axis 5 around the milling head 3 and eject the loosened digging material via the ejection opening 13 of the protective hood 12.
  • the lateral surface 9 of the outer truncated cone 7 assumes a horizontal position corresponding to the base 16 of a trench 17 to be created, the angle of repose of the two trench embankments 18 then being due to the dimensioning of the previously treated angles x and y also be 120 ° with respect to the trench bottom 16.
  • the trench embankments 18 have a different inclination, all that is required is a corresponding adjustment of the milling cutter 1 in the direction of the arrow 19 relative to the support arm 2.
  • FIG. 2 shows a side view of the milling head 3 corresponding to FIG. 1 with the schematically illustrated digging tools 20 designed as digging blades, by means of which the excavation and thus also the profile of the trench 17 and the envelope curve 21 of the milling head 3 are determined.
  • FIG. 3 shows the processing of a banquet designated 22 by means of the milling head 3 according to the invention the milling head 3 has been pivoted clockwise from its position shown in FIG. 1 about the axis of rotation 5 into the position shown in FIG. 3, in which the outer surface 10 of the outer truncated cone 7 is just parallel to the surface 23 of the banquet 22 and the banquet 22 can now be processed by means of the digging tools 20 located on this outer surface 10 of the milling head 3.
  • processing of the banquet 22 is also possible by means of the digging tools 20 arranged on the conical and cylindrical lateral surfaces 8, 9 and 26.
  • Fig. 4 shows a side view of the milling head 3, which is articulated on a support arm, not shown, and can be pivoted both about the horizontal axis of rotation S and about the vertical axis 24 in the direction of arrow 25 by means of a hydraulic cylinder, not shown.
  • FIG. 5 which shows the outer end face 34 of the milling head 3
  • ejectors designated 36 are also arranged on this end face 34 in the region of the edge 35 thereof at approximately equal distances from one another, which eject in the axial direction via this end face 34 of the milling head 3 and are directed against the direction of rotation of the milling head 3 determined by the arrow 37.
  • the arrangement of this ejector 36 is provided so that they lag behind the first side 34 of the milling head 3 when the milling head 3 rotates in the direction of the arrow 37, the distance between each cutting edge 38 and the associated ejector 36 by the Dimension a is determined.
  • the milling head 3 is first pivoted as far as about the horizontal axis S into its intended working position, as is shown differently for example in FIGS. 1 and 3. If, as shown in FIG. 1, a flat trench bottom 16, but a curved trench bottom is to be created, this can be achieved by additionally turning the milling head 3 about the vertical axis 24.
  • the milling head 3 is reversed and it rotates in the opposite direction of the arrow 37, the digging material detected by these ejectors 36 is ejected in the opposite direction to the arrow 37. It is thus possible to rotate the milling head 3 both clockwise and counterclockwise, depending on the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Shovels (AREA)
EP19920111364 1991-07-12 1992-07-03 Milling tool adapted for excavating Withdrawn EP0524470A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4123082 1991-07-12
DE19914123082 DE4123082A1 (de) 1991-07-12 1991-07-12 Fuer grabarbeiten geeignete fraese

Publications (2)

Publication Number Publication Date
EP0524470A2 true EP0524470A2 (fr) 1993-01-27
EP0524470A3 EP0524470A3 (en) 1993-04-14

Family

ID=6435979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920111364 Withdrawn EP0524470A3 (en) 1991-07-12 1992-07-03 Milling tool adapted for excavating

Country Status (2)

Country Link
EP (1) EP0524470A3 (fr)
DE (1) DE4123082A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032955B (de) * 1957-01-17 1958-06-26 Joachim Rathjens Ingenieurbaut Tiefenschichtenfoerdervorrichtung
FR1388165A (fr) * 1964-01-17 1965-02-05 Excavateur pour creuser ou curer les fossés
FR1586985A (fr) * 1968-10-09 1970-03-06
DE2803502A1 (de) * 1978-01-27 1979-08-02 Trenkle Gmbh Motorisch antreibbare fraestrommel zur boeschungs- und grabenbearbeitung
DE2805593A1 (de) * 1978-02-10 1979-08-16 Alfred Wehrle Einrichtung zum ausheben und/oder reinigen von graeben im gelaende, insbesondere von wassergraeben zu draenungszwecken o.dgl.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032955B (de) * 1957-01-17 1958-06-26 Joachim Rathjens Ingenieurbaut Tiefenschichtenfoerdervorrichtung
FR1388165A (fr) * 1964-01-17 1965-02-05 Excavateur pour creuser ou curer les fossés
FR1586985A (fr) * 1968-10-09 1970-03-06
DE2803502A1 (de) * 1978-01-27 1979-08-02 Trenkle Gmbh Motorisch antreibbare fraestrommel zur boeschungs- und grabenbearbeitung
DE2805593A1 (de) * 1978-02-10 1979-08-16 Alfred Wehrle Einrichtung zum ausheben und/oder reinigen von graeben im gelaende, insbesondere von wassergraeben zu draenungszwecken o.dgl.

Also Published As

Publication number Publication date
EP0524470A3 (en) 1993-04-14
DE4123082A1 (de) 1993-01-14

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