EP0811725B1 - Führungsvorrichtung für ein oder mehrere flexible Leitungen an der Spitze eines Gelenkarms einer Hebevorrichtung - Google Patents

Führungsvorrichtung für ein oder mehrere flexible Leitungen an der Spitze eines Gelenkarms einer Hebevorrichtung Download PDF

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Publication number
EP0811725B1
EP0811725B1 EP19970401223 EP97401223A EP0811725B1 EP 0811725 B1 EP0811725 B1 EP 0811725B1 EP 19970401223 EP19970401223 EP 19970401223 EP 97401223 A EP97401223 A EP 97401223A EP 0811725 B1 EP0811725 B1 EP 0811725B1
Authority
EP
European Patent Office
Prior art keywords
boom
hose
mast
support member
axis
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.)
Expired - Lifetime
Application number
EP19970401223
Other languages
English (en)
French (fr)
Other versions
EP0811725A1 (de
Inventor
Philippe Chagnot
Jean-Claude Riglet
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.)
Compagnie du Sol SARL
Original Assignee
Compagnie du Sol SARL
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 Compagnie du Sol SARL filed Critical Compagnie du Sol SARL
Publication of EP0811725A1 publication Critical patent/EP0811725A1/de
Application granted granted Critical
Publication of EP0811725B1 publication Critical patent/EP0811725B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E02F3/22—Component parts
    • 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
    • E02F3/205—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 with a pair of digging wheels, e.g. slotting machines

Definitions

  • the present invention relates to a device for guiding one or more several hoses at the end of an articulated mast of a lifting device and a lifting device provided with such a device, in particular for digging trenches in the ground.
  • This appliance has an articulated mast at the top end of which is suspended a chassis by cables. Milling drums, mounted on the lower part of the chassis, are rotated and disintegrate the ground by allowing the chassis to descend into the ground to carry out the excavation.
  • a hose connected to the chassis allows the spoils to be raised from the vicinity of the milling drums to the ground surface.
  • the hose extends vertically from the chassis to the end high of the articulated mast where it curves to extend substantially parallel to the mast, up to a reel with horizontal axis located next to the mast.
  • a guide device is provided for give the hoses a progressive curvature limiting, as far as possible, excessive stress on the hoses.
  • the hoses when the mast is in the low position substantially horizontal, the hoses go from a vertical orientation to a horizontal orientation by winding on the guide device at the end of the mast about a quarter of a turn, that is 90 °, while, when the mast is in high position while being inclined by approximately 45 ° with respect to the horizontal, the hoses move from a vertical orientation to a 45-degree tilted orientation wrapping around three-eighths of a turn, or 135 °, on the guide.
  • the guide device 1 must extend over 135 ° so as to properly support the hose 2 when the mast 3 is found in high position.
  • the hose 2 no longer winds up more than 90 ° on the guide device 1, which then comprises an unnecessary portion of 45 ° s' extending downwards, which hinders reassembly of the chassis 4.
  • the chassis 4 can therefore only go up to a distance h from the mast 3.
  • a device has hitherto been used guide 1 'shown in Figure 3, which is dimensioned so that it does not extends only over a quarter of a turn, i.e. 90 °, which allows the chassis to be reassembled 4 as much as possible without it coming up against the lower part of the guide device 1 'when the mast 2 is in a horizontal position.
  • the hose 2 is poorly guided, because the guide device 1 'is not tangent at the vertical part of the hose 2, which causes the hose C to break, and usually premature wear of the hose.
  • the present invention provides a device for guiding hoses, which solves the above mentioned problems and which is particularly simple and economic.
  • the subject of the present invention is a device for guiding at least a hose at the end of a mast articulated around a first articulation axis fixed, said flexible tube comprising a part extending along the mast and a part dipping down from the end of the mast, the device comprising a support member arranged at the end of the mast to support the hose in it conferring a curvature capable of preventing any breakage of said hose at least in low mast position, characterized in that the support member extends over a sufficient length to support the hose in the highest mast position without said hose breaking and by the fact that the support member is mounted pivoting on the one hand on the mast around a first axis of articulation and on the other hand on a rigid connection means around a second articulation axis, said means rigid link itself being articulated around a second fixed articulation axis, the first and second fixed axes of articulation and the first and second axes of pivoting being located at the four vertices of a deformable
  • the guide device comprises a support member which has the length necessary to support suitably the hose (s) without breaking even when the mast is in the high position, but due to the fact that this support member remains parallel to itself, there does not occur the disadvantage that when the mast is in the low position, the support member protrudes at the bottom of the mast and hinders reassembly of the chassis to which the hoses are connected.
  • the support member of the device according to the invention has, of course, an excess portion which does not support the flexible, but this excess portion is found in the upper part of the device and does not interfere with the reassembly of the chassis.
  • the device according to the invention ensures proper guidance of the hoses and does not cause any discomfort during reassembly of the chassis.
  • the support member is mounted on the mast so that its excess portion, in the sense defined above, penetrates the thickness of the mast when the mast is in the low position.
  • the means of rigid connection which connects the support member to the second articulation axis is constituted by a bar substantially the same length as the mast, which extends parallel to the latter.
  • the support member is of the roller type, that is to say that it has a succession of rollers with axes parallel to each other and perpendicular to the axis of the hose, said rollers being arranged, seen from the side, in a arc.
  • the present invention also relates to a lifting device provided with a device as described above and in particular a lifting device for digging trenches in the ground using milling drums of the type comprising a platform supported by a running gear, a lifting mast articulated on the platform, a chassis suspended from the high end of the mast, rotational milling drums mounted at the bottom of the chassis, at least one reel with horizontal axis located on the platform next to the mast, supporting a hose for raising the cuttings from the vicinity of the drums milling to the ground surface and one or more hydraulic hoses, said hoses extending from the upper part of the chassis to the reel being vertical between the chassis and the high end of the mast and parallel to the axis of the mast between the high end of the mast and the reel, characterized in that it further includes a guide device as described above at the end high of the mast to give the hoses an appropriate curvature preventing any breakage of these at the high end of the mast.
  • the set of rollers 5, of which figure SA provides a sectional view of a roller and which constitutes a support member within the meaning of the invention, is mounted at the high end of the mast 6 around a pivot axis 7 substantially horizontal and perpendicular to the longitudinal axis of the mast.
  • the support member 5 is preferably constituted by two plates parallels 5a between which are fixed axes on which are mounted the rolls 5b themselves.
  • the axes of the rollers 5b are arranged, projected onto the plates 5a, in an arc.
  • the mast 6 is itself articulated on a base 8 secured to a platform 9, around an axis 10 of articulation parallel to the axis 7.
  • a rigid bar 11 is articulated around an axis hinge 12, parallel to axes 7 and 10.
  • the bar 11 has substantially the same length as mast 6.
  • the bar 11 is connected to the assembly of rollers 5 by a pivot axis 13 parallel to axes 7, 10 and 12.
  • the four axes 7, 10, 12 and 13 are located to the four vertices of a parallelogram, so that during movements inclination of the mast, the plane containing axes 7 and 13 remains parallel to the linked plane to base 8 and defined by axes 10 and 12.
  • roller assembly 5 remains parallel to itself whatever the inclination of the mast 6.
  • the flexible 2 is wound on 135 ° on the roller assembly, which is tangent to the flexible in the vertical part and in the part parallel to the mast of said flexible.
  • roller assembly 5 When the mast is horizontal, as shown in Figure 6, the roller assembly 5 is always tangent to the hose, in the vertical part and in the horizontal part of the latter but an upper part of the whole of rollers 5, which extends over 45 °, is not used for guiding the hose.
  • the device according to the invention is able to guide the flexible by giving it a progressive curvature capable of preserving it from any premature wear, while keeping the compactness of the lifting device on which it is installed.
  • FIGS. 7 and 8 show an example of an apparatus for dig trenches in the ground using a guide device according to the invention.
  • This device comprises a running gear 14 on which rests a platform 15 supporting a reel with horizontal axis 16, a base 17 and thrust cylinders 18 which act on a mast 19 articulated on the base 17.
  • a set of rollers 20 with horizontal axes parallel to each other and arranged substantially in an arc is pivotally mounted at the end of the mast remote from the reel 16, being connected to the base 17 by a metal bar rigid 21 pivotally mounted on the one hand to said set of rollers 20 and on the other hand at base 17.
  • FIG. 7 the reference numbers 7, 10, 12, 13 are plotted. corresponding to the pivot and articulation axes of Figures 5 and 6.
  • the mast and the bar are dimensioned and positioned so that constitute the two opposite sides of a deformable parallelogram by which the rollers 20 remain parallel itself.
  • roller assembly enters tangentially in contact with the two parts of the hose located on the side and on the other of said set of rollers.
  • the hose rests on the entire length of the set of rollers, approximately 135 °.
  • the assembly of rollers has an excess portion which is located in the thickness of the mast and does not hinder the reassembly of the chassis (not shown).

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  • 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)
  • Jib Cranes (AREA)

Claims (5)

  1. Führungsvorrichtung für mindestens eine flexible Leitung (2) am äußeren Ende eines Arms (6), der um eine erste feststehende Gelenkachse (10) schwenkbar ist, wobei die flexible Leitung (2) einen Längenabschnitt aufweist, der sich entlang dem Arm erstreckt, und einen Längenabschnitt, der vom äußeren Ende des Arms nach unten gerichtet ist, und wobei an dem äußeren Ende des Arms (6) ein zum Stützen der Leitung dienendes Tragteil (5) angeordnet ist, welches der Leitung eine geeignete Krümmung erteilt, um jeglichen Bruch der Leitung zumindest in der unteren Position des Arms zu vermeiden, dadurch gekennzeichnet, dass sich das Tragteil (5) über eine ausreichende Länge erstreckt, um die flexible Leitung (2) in der höchsten Position des Arms abzustützen, ohne dass die Leitung (2) Schaden erleidet, dass das Tragteil (5) einerseits an dem Arm (6) um eine erste Schwenkachse (7) und andererseits an einem starren Verbindungsglied (11) um eine zweite Schwenkachse (13) schwenkbar befestigt ist, dass das starre Verbindungsglied (11) seinerseits um eine zweite feststehende Gelenkachse (12) drehbar gelagert ist, und dass die beiden feststehenden Gelenkachsen (10, 12) und die beiden Schwenkachsen (7, 13) in den vier Eckpunkten eines verschiebbaren Parallelogramms derart angeordnet sind, dass das Tragteil beim Bewegen des Arms (6) zu sich selbst parallel bleibt.
  2. Führungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Tragteil (5) derart an dem Arm (6) befestigt ist, dass sein Bereich, der in der höchsten Position des Arms die flexible Leitung nicht abstützt, in der Dicke des Arms verschwindet, wenn der Arm seine untere Position einnimmt.
  3. Führungsvorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass das starre Verbindungsglied, welches das Tragteil (5) mit der zweiten feststehenden Gelenkachse (12) verbindet, aus einer Stange (11) besteht, die etwa die gleiche Länge wie der Arm (6) aufweist, der sich parallel zu dieser erstreckt.
  4. Führungsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Tragteil eine Folge von Rollen aufweist, deren Achsen parallel zueinander und senkrecht zu der Achse der flexiblen Leitung (2) verlaufen, wobei die Rollen, von der Seite gesehen, auf einem Kreisbogen angeordnet sind.
  5. Hebevorrichtung, insbesondere zum Ausheben von Gräben im Boden mittels Fräswalzen, mit einer Plattform (15), die auf einem Fahrgestell (14) sitzt, einem Hebearm (19), der auf der Plattform angelenkt ist, einem Gestell, das am oberen Ende des Arms aufgehängt ist, Fräswalzen, die drehbar antreibbar und am unteren Ende des Gestells befestigt sind, einer mit einer horizontalen Achse versehenen Aufwickeleinrichtung (16), welche auf der Plattform (15) neben dem Arm (19) angeordnet ist und eine flexible Leitung trägt, die zum Abtransport des Abraums aus der Umgebung der Fräswalzen zur Bodenoberfläche vorgesehen ist, sowie einer oder mehrerer flexiblen hydraulischen Leitungen, die sich vom oberen Bereich des Gestells bis zur Aufwickeleinrichtung (16) erstrecken, wobei sie zwischen dem Gestell und dem oberen Ende des Arms (19) vertikal und zwischen dem oberen Ende des Arms (19) und der Aufwickeleinrichtung (16) parallel zur Achse des Arms verlaufen, dadurch gekennzeichnet, dass unter anderem eine Führungsvorrichtung nach einem der Ansprüche 1 bis 4 am oberen Ende des Arms (19) vorgesehen ist, um den flexiblen Leitungen eine geeignete Krümmung zu erteilen, damit jeglicher Bruch der Leitungen im Bereich des oberen Endes des Arms (19) vermieden wird.
EP19970401223 1996-06-04 1997-06-03 Führungsvorrichtung für ein oder mehrere flexible Leitungen an der Spitze eines Gelenkarms einer Hebevorrichtung Expired - Lifetime EP0811725B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9606872 1996-06-04
FR9606872A FR2749291B1 (fr) 1996-06-04 1996-06-04 Dispositif de guidage d'un ou plusieurs flexibles a l'extremite d'un mat articule d'un appareil de levage et appareil de levage muni d'un tel dispositif notamment pour creuser des tranchees dans le sol

Publications (2)

Publication Number Publication Date
EP0811725A1 EP0811725A1 (de) 1997-12-10
EP0811725B1 true EP0811725B1 (de) 2002-05-08

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Application Number Title Priority Date Filing Date
EP19970401223 Expired - Lifetime EP0811725B1 (de) 1996-06-04 1997-06-03 Führungsvorrichtung für ein oder mehrere flexible Leitungen an der Spitze eines Gelenkarms einer Hebevorrichtung

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EP (1) EP0811725B1 (de)
JP (1) JP3943191B2 (de)
DE (1) DE69712406T2 (de)
FR (1) FR2749291B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2926096B1 (fr) 2008-01-03 2014-02-21 Cie Du Sol Machine d'excavation apte a etre transportee dans des conteneurs
SE535793C2 (sv) * 2010-04-13 2012-12-18 Indexator Group Ab Anordning för styrning av slangar och/eller kablar

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2696767B1 (fr) * 1992-10-09 1994-12-09 Sol Cie Appareil pour creuser dans le sol des tranchées de grande profondeur à l'aide de tambours de fraisage.

Also Published As

Publication number Publication date
JP3943191B2 (ja) 2007-07-11
JPH10120370A (ja) 1998-05-12
EP0811725A1 (de) 1997-12-10
DE69712406T2 (de) 2002-08-29
DE69712406D1 (de) 2002-06-13
FR2749291B1 (fr) 1998-09-11
FR2749291A1 (fr) 1997-12-05

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