EP0811725B1 - Dispositif de guidage d'un ou plusieurs flexibles à l'extrémité d'un mât articulé d'un appareil de levage - Google Patents
Dispositif de guidage d'un ou plusieurs flexibles à l'extrémité d'un mât articulé d'un appareil de levage Download PDFInfo
- 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
Links
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000003801 milling Methods 0.000 description 5
- 230000002028 premature Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Jib Cranes (AREA)
- Earth Drilling (AREA)
Description
- les figures 1 à 4, qui ont déjà été décrites, sont des vues schématiques permettant de bien comprendre le problème technique que la présente invention cherche à résoudre,
- les figures 5 et 6 sont des vues schématiques en élévation, analogues aux figures 1 à 4, du dispositif selon l'invention,
- la figure 5A est une vue en coupe selon la ligne VA-VA de la figure 5.
- les figures 7 et 8 sont des vues schématiques, en élévation d'un dispositif selon un mode de réalisation de l'invention.
Claims (5)
- Dispositif de guidage d'au moins un flexible (2) à l'extrémité d'un mât (6) articulé autour d'un premier axe d'articulation fixe (10), ledit flexible (2) comprenant une partie s'étendant le long du mât et une partie plongeant vers le bas depuis l'extrémité du mât, le dispositif comportant un organe-support (5) agencé à l'extrémité du mât (6) pour supporter le flexible en lui conférant une courbure propre à éviter toute cassure dudit flexible au moins en position basse du mât, caractérisé par le fait que l'organe-support (5) s'étend sur une longueur suffisante pour supporter le flexible (2) dans la position la plus haute du mât sans que ledit flexible se casse et par le fait que l'organe-support (5) est monté pivotant d'une part sur le mât (6) autour d'un premier axe de pivotement (7) et d'autre par sur un moyen de liaison rigide (11) autour d'un second axe de pivotement (13), ledit moyen de liaison rigide (11) étant lui-même articulé autour d'un second axe d'articulation fixe (12), les premier et second axes d'articulation fixes (10, 12) et les premier et second axes de pivotement (7, 13) étant situés aux quatre sommets d'un parallélogramme déformable, de sorte que l'organe-support (5) demeure parallèle à lui-même lors des mouvements du mât (6).
- Dispositif de guidage selon la revendication 1, caractérisé par le fait que l'organe-support (5) est monté sur le mât (6) de manière que sa portion qui ne supporte pas le flexible en position basse du mât pénètre dans l'épaisseur du mât lorsque le mât se trouve en position basse.
- Dispositif selon l'une quelconque des revendications 1 et 2, caractérisé par le fait que le moyen de liaison rigide qui relie l'organe-support (5) au second axe d'articulation (12) est constitué par une barre (11) sensiblement de même longueur que le mât (6), qui s'étend parallèlement à ce dernier.
- Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que l'organe-support possède une succession de rouleaux d'axes parallèles entre eux et perpendiculaires à l'axe du flexible (2), lesdits rouleaux étant disposés, vus de côté, suivant un arc de cercle.
- Appareil de levage notamment pour creuser des tranchées dans le sol à l'aide de tambours de fraisage, du type comportant une plate-forme (15) supportée par un train de roulement (14), un mât de levage (19) articulé sur la plate-forme, un châssis suspendu à l'extrémité haute du mât, des tambours de fraisage entraínés en rotation montés à la partie inférieure du châssis, un enrouleur (16) à axe horizontal situé sur la plate-forme (15) à côté du mât (19), supportant un flexible pour remonter des déblais depuis le voisinage des tambours de fraisage jusqu'à la surface du sol et un ou plusieurs flexibles hydrauliques, lesdits flexibles s'étendant depuis la partie supérieure du châssis jusqu'à l'enrouleur (16) en étant verticaux entre le châssis et l'extrémité haute du mât (19) et parallèles à l'axe du mât entre l'extrémité haute du mât (19) et l'enrouleur (16), caractérisé par le fait qu'il comporte en outre un dispositif de guidage selon l'une quelconque des revendications 1 à 4, à l'extrémité haute du mât (19) pour conférer aux flexibles une courbure appropriée évitant toute cassure de ces derniers au niveau de l'extrémité haute du mât (19).
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 (fr) | 1997-12-10 |
| EP0811725B1 true EP0811725B1 (fr) | 2002-05-08 |
Family
ID=9492699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19970401223 Expired - Lifetime EP0811725B1 (fr) | 1996-06-04 | 1997-06-03 | Dispositif de guidage d'un ou plusieurs flexibles à l'extrémité d'un mât articulé d'un appareil de levage |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0811725B1 (fr) |
| JP (1) | JP3943191B2 (fr) |
| DE (1) | DE69712406T2 (fr) |
| FR (1) | FR2749291B1 (fr) |
Families Citing this family (2)
| 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)
| 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. |
-
1996
- 1996-06-04 FR FR9606872A patent/FR2749291B1/fr not_active Expired - Fee Related
-
1997
- 1997-06-03 DE DE1997612406 patent/DE69712406T2/de not_active Expired - Lifetime
- 1997-06-03 EP EP19970401223 patent/EP0811725B1/fr not_active Expired - Lifetime
- 1997-06-04 JP JP14630297A patent/JP3943191B2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FR2749291A1 (fr) | 1997-12-05 |
| DE69712406T2 (de) | 2002-08-29 |
| JP3943191B2 (ja) | 2007-07-11 |
| EP0811725A1 (fr) | 1997-12-10 |
| DE69712406D1 (de) | 2002-06-13 |
| JPH10120370A (ja) | 1998-05-12 |
| FR2749291B1 (fr) | 1998-09-11 |
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