EP1301431B9 - Articulated jib crane - Google Patents

Articulated jib crane Download PDF

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Publication number
EP1301431B9
EP1301431B9 EP01944862A EP01944862A EP1301431B9 EP 1301431 B9 EP1301431 B9 EP 1301431B9 EP 01944862 A EP01944862 A EP 01944862A EP 01944862 A EP01944862 A EP 01944862A EP 1301431 B9 EP1301431 B9 EP 1301431B9
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EP
European Patent Office
Prior art keywords
jib
foot
head member
machine according
counterweight
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
EP01944862A
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German (de)
French (fr)
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EP1301431A1 (en
EP1301431B1 (en
Inventor
Jean-Marc Yerly
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Individual
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Individual
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Priority to EP01944862A priority Critical patent/EP1301431B9/en
Publication of EP1301431A1 publication Critical patent/EP1301431A1/en
Publication of EP1301431B1 publication Critical patent/EP1301431B1/en
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Publication of EP1301431B9 publication Critical patent/EP1301431B9/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/26—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • B66C23/348—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes the erection being operated by jacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/06—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements
    • B66C23/08—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
    • B66C23/10—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20207—Multiple controlling elements for single controlled element
    • Y10T74/20305—Robotic arm

Definitions

  • the present invention relates to a lifting gear with articulating boom operating in articulated mode or in lift mode for lifting and handling loads, as defined in the preamble of claim 1.
  • Lift-up boom cranes have the advantage over horizontal boom cranes of comparable tower heights that they can bring loads to higher heights.
  • Patent FR 2605619 describes a crane type defined entry, which combines the effects of an articulated jib crane with those of a crane luffing distributive boom, giving it a certain versatility.
  • the mast of this crane has the advantage of being unfoldable and foldable and this automatically.
  • this crane always has a minimum important range.
  • the hook height gain obtained when the tip of the boom is raised remains relatively low, can not exceed an angular amplitude equivalent to 30 ° relative to the horizontal, because of the angle that always form the dart and the foot of the arrow.
  • this crane when this crane is folded and placed on a rolling chassis, specially designed for its transport, the road assembly thus formed is just admitted to go under a template of 4 meters, allowing it to access on the road network.
  • this set can not circulate on some secondary axes with restricted size.
  • the object of the present invention is to provide a multi-purpose steerable jib crane that can be used as a lifting luffing jib crane as well as an articulated jib crane or as a tilting jib crane. the transformation from one function to another must be done as simply as possible.
  • Another object of the present invention is to provide a lifting device with a steerable distributing boom. versatile which, when working as an articulated boom articulated crane, has a very small minimum reach, but a maximum maximum reach possible.
  • Another object of the present invention is to provide a versatile steerable jib crane which, when working as a luffing jib crane, allows the highest possible hook height.
  • the object of the present invention is to provide a multipurpose steerable jib lifting device which, when the boom is articulated on an articulated pylon, can be folded as compactly as possible so that it can be placed in a marine type container for transportation.
  • the subject of the present invention is a lifting device with a steerable directional jib operating in articulated mode or in lift mode for lifting and handling of loads as defined at the entrance where the part of the foot of the arrow next to said second end and counter-jib have conjugate shapes allowing the dart tip to align with the jib foot.
  • the tie rod can be connected to the dart tip through at least one lift strut integral with the dart.
  • the lifting strut can be arranged substantially at the junction between the counter-dart and the tip of the dart.
  • the counter-jib and the portion of the jib foot adjacent to its second end may have prismatic profiles and may come into contact with each other when the jib foot and the jib are aligned.
  • the part of the jib foot near its second end may have the shape of a fork with two branches and that the counter-jib can be housed in the space between the two branches.
  • the foot of the boom may consist of two parallel beams and the counter-jib can be housed in the spacing between the two beams.
  • the jib foot and the dart can be connected by two identical hinge cylinders, mounted symmetrically with respect to the vertical plane of symmetry of the hoist.
  • the hinge cylinder (s) can directly connect the boom foot to the counter-jib.
  • the hinge cylinder (s) can directly connect the boom foot and the dart tip.
  • Each hinge cylinder can connect the foot of the arrow and the dart via two connecting rods.
  • Said connecting rods can be articulated to one another and the cylinder by the same axis of rotation.
  • the lifting apparatus comprises a mobile counterweight the position of which is enslaved to the angle of inclination of the foot of the arrow.
  • the mobile counterweight thus balances the crane according to the position of the boom.
  • This movable counterweight can be attached to a first end of a pivoting counterweight arm, the second end of which is articulated in rotation to the turret or platform of the hoist, the side opposite the arrow.
  • the counterweight is connected to the boom, near the boom / jib joint by at least one counterweight cable passing over the punch.
  • the presence of the counterweight cable (s) makes it possible to reduce the importance of the cable and the motor for raising the boom.
  • This counterweight cable can be attached to the dart, in particular to the reinforced part of the dart / boom joint.
  • the other end of the counterweight cable may be attached to the platform, the counterweight cable passing over a pulley carried by the pivoting counterweight arm. In this way, the angle of the pivoting arm, and therefore the counterweight holding moment, is directly controlled by the boom angle without the use of an auxiliary motor.
  • the pulley can be connected to the pivoting counterbalance arm by an equally pivotable pulley arm, articulated to the counterweight arm, and the assembly formed by this pulley and the pulley arm may comprise weighting means for tensioning the counterweight cable.
  • the lifting machine comprises two counterweight cables respectively passing on either side of the foot of the boom.
  • the first embodiment of the steerable jib lifting gear operating in articulated mode or in lift mode for lifting and handling loads as shown in Figure 1 comprises a folding tower consisting of two articulated sections the to one another, namely a pylon foot 21 and an upper pylon 22.
  • the pylon foot is pivotally mounted about a horizontal axis on the front part of a rotating frame or turret 12.
  • the upper pylon carries, pivoting about a horizontal hinge 26, on the one hand an articulating and liftable distributing boom 31, 41 and, on the other hand, two symmetrical punches 16 connected at their end by an axis carrying two pulleys 17.
  • the turret 12 is mounted pivoting about a vertical axis on a carrier frame 11.
  • the pylon is held in the working position thanks to a set of elements consisting of a ballast 13 fixed on the rear part of the turret 12, straightening struts 23 connecting the pylon to the turret, two tie rods 25, all connected to a control device not shown in the drawing, which may be for example a winch placed on the turret 12, the two tie rods respectively passing on the two pulleys 17 of the punches 16.
  • the hinged articulated and liftable arrow consists of two centerpieces, namely an arrow foot 31 and a dart 41, articulated to one another.
  • the lower end 35 of the jib foot 31 is connected, via the horizontal joint 26, at the top of the upper pylon 22.
  • the other end 36 of the foot of the boom is connected, by means of a horizontal articulation 45, to the dart 41.
  • the hinge 45 divides the dart 41 into two asymmetric parts, namely a counter-dart 42, carrying at its end two pulleys 44, and a dart tip 43, bearing at its end 46 two pulleys guiding load suspension means consisting of a hoisting rope 53, a muffle and a lifting hook 54.
  • the dispensing boom is in the working position articulated mode.
  • the tie rods 25 pass successively into the grooves of the pulleys 17 of the two punches 16, then into those of the two pulleys 44 of the counter-dart 42, and are fixed on the dart 41.
  • the tie rods 25 form with the jib foot 31, the two punches 16 and the counter-dart 42 a deformable quadrilateral. This geometric configuration allows the end 46 of the tip of the dart 43 to move in an approximately flat horizontal trajectory, represented by dashed line 51.
  • the counter-jib 42 can be housed within the slot or spacing 34 between these two beams 31a and 31b and a perfect alignment of the dart 41 with the jib foot 31 is then obtained, which, as described below, allows a large hook height gain compared to multipurpose arrows of the prior art which have a bent shape.
  • the control device (1) of the hinge 45 consists of a system with rods and jack (s) double effect, which will be described in detail below.
  • the operation is simply by the relative movement of the rod relative to the cylinder of the cylinder or cylinders.
  • the lifting hook 54 is progressively closer to the pylon.
  • the end 46 of the dart tip 43 passes through the intermediate position C, corresponding approximately to the minimum reach position that was obtained with the prior art hoisting gear. Now, because of the presence of the slot or gap 34 between the two beams 31a and 31b of the jib 31 which allows the dart tip 43 to lodge there, the movement can continue until it brings the end 46 of the dart tip 43 at the position D, all against the foot of arrow. This position D corresponds to the minimum range of the hoist.
  • FIG. 8 shows in detail the elements constituting the locking device 61 integral, on the one hand, with each of the two beams 31a and 31b of the jib foot 31 and, on the other hand, with the counter-jib 42 of the jib 41 and cooperating together to keep the dart 41 and the jib foot 31 aligned.
  • the tie rods and the hinge jack system have been removed in this figure.
  • each of the two beams 31a and 31b are mounted in projections and placed vis-a-vis respectively a workpiece 62a and a workpiece 62b.
  • a locking cylinder respectively 63a and 63b sliding in a horizontal transverse direction respectively within the housings 64a and 64b.
  • the locking cylinders are held partly outside their housing under the action respectively springs 65a and 65b.
  • Under the counter-jib 42 is mounted, projecting, an U-shaped part 66, whose two side faces are bevelled.
  • Two bores 67a and 67b intended respectively to serve as housing for the outer portion of each of the locking cylinders 63a and 63b, have been made respectively on the two lateral faces of the part 66.
  • the inclination of the distributing arrow obtained during the alignment of the distributing arrow and corresponding to the position E is 7 ° above the horizontal.
  • a range of more than 24 meters is the maximum range that can be achieved with this hoist.
  • the hook height is more than 24 meters from the top of the pylon.
  • two electromagnetic devices 69a integral respectively with the two parts 62a and 62b, are actuated to allow the total withdrawal of the two locking cylinders 63a and 63b of the holes 67a and 67b.
  • the control device (1) for articulation with a cylinder makes it possible to break the alignment of the dart with the jib foot.
  • the next step is to release the tie rods 25.
  • FIG. 3 The folding of the tower is illustrated in FIG. 3 using a succession of superimposed views. To clarify the drawing, most of the dispensing boom in a folded and folded position on the upper pylon as described above has been removed in this figure.
  • each of the punches 16 opposite that carrying the pulleys 17 is mounted in articulation with a straightening sling 20, thus avoiding the tilting of the punches towards the back of the machine, the sling being connected to a straightening strut 23.
  • the top of the pylon is extended by two parts 28 forming a stop for the two punches, thus preventing their tilting forward of the hoist.
  • Each of the beams of the boom foot 31 carries a return bridge 32 for the recovery of the boom.
  • On each of these trestles is a stop 33 relying respectively on each of the punches, thus avoiding the tilting of the boom foot 31 towards the rear of the hoist.
  • the folded hoist is placed on a carriage 71 and its support frame 11 is attached to the rear of a tractor 72.
  • the hoist is placed on an articulated trailer 73 to a tractor 72.
  • the hoist is placed in a container 74 known as "marine container” and whose standardized dimensions are 12040 millimeters for the length and 2450 millimeters for the height.
  • a container 74 known as "marine container” and whose standardized dimensions are 12040 millimeters for the length and 2450 millimeters for the height.
  • the counter-dart 42 has been folded back on itself, thus offering a space saving this time in length.
  • the container can then be transported in a conventional manner, for example on a flat platform trailer 75.
  • the hoist has been described above with a carrier frame 11 resting on the ground. It is understood that it can also be mounted, regardless of the type of pylon that composes it, on a rolling chassis, possibly self-propelled.
  • the boom 31 consists of a single fork-shaped beam having a longitudinal slot 34 open at the end of the jib foot bearing the hinge 45.
  • the length of this slot is sufficient for the counter-jib 42 can be housed there to allow alignment between the dart 41 and the boom foot 31.
  • a locking device similar to that (61) of the first embodiment may be provided as an option and ensures the alignment of the dart with the jib foot.
  • Figure 10 shows the control device 1 of the articulation between the jib and dart of a variant of the second embodiment.
  • the two branches 31a, 31b of the fork carry a transverse axis 2 around which can pivot a jack 3.
  • the jack 3 is articulated to the axis 2 by an end 4 of the cylinder cylinder 5.
  • the cylinder rod 6 is hinged to its free end by a transverse axis 7 to a system of two pairs of rods 8a, 8b, 9a, 9b. Each rod is articulated in rotation about the axis 7 by one of its ends.
  • the other end of the rods 8a, 8b is hinged at 10a on the counter-dart.
  • each link 9a, 9b is articulated at 14a, 14b respectively to the branches 31a, 31b of the fork.
  • the joint shown in Figure 10 can also be used in the context of the first embodiment of the hoist, whose boom foot consists of two beams.
  • the length of the connecting rods and the cylinder rod is calculated so that, when the cylinder rod is out at the maximum of the cylinder, the dart is housed between the two beams of the boom foot, as this is shown in Figure 11.
  • FIG. 12a, 12b and 12c schematically show a third embodiment of the hoist.
  • the pylon is a conventional tower 29.
  • a first end 35 of an arrow foot 31 At the top of the pylon is articulated a first end 35 of an arrow foot 31.
  • the second end 37 of the arrow foot has the shape of a prism.
  • a dart rotating about a horizontal axis 45.
  • This hinge axis subdivides the dart respectively into a dart tip similar to the dart tips of the first two embodiments and a counter-dart 49 which, in side elevation, also has a prismatic profile, whose apex angle is selected so that the dart, by rotation about the hinge 45 can come to align with the foot of arrow as it is illustrated in FIG. 12b, the counter-dart 49 being placed against the end 37 in the form of a prism of the jib foot.
  • FIGS. 13a and 13b Two variants of this articulation and of the articulation control device 1 are illustrated by FIGS. 13a and 13b.
  • the second end 37 of the boom is a beam having the profile of a prism.
  • the counter-jib consists of two symmetrical branches 49a, 49b separated by a slot.
  • the hinge device 1 cylinder and a pair of rods is housed in this slot.
  • the counter-jib consists of a single beam 49 with a prismatic profile.
  • a double system of jacks 3a, 3b and rods 8a, 8b, 9a, 9b is placed symmetrically on either side of the counter-jib.
  • FIGS. 10, 13a and 13b show the three articulation devices are functionally identical, although different in their structure, since the articulation of FIG. 10 comprises a single jack acting on two pairs. of symmetrical connecting rods, Figure 13a shows a single cylinder acting on a single pair of connecting rods moving inside the slot between the two branches of the counter-dart and Figure 13b shows two identical and symmetrical systems of connecting rods and jacks.
  • FIGS 12a, 12b and 12c illustrate the three working modes of the hoist according to the invention. In each of these figures, the displacement of the end 46 of the tip of the dart is shown in dashed lines.
  • FIG. 12a which shows an articulated boom mode
  • the end 46 moves substantially along a horizontal line 51 which rises only in the vicinity of the maximum reach position.
  • the aligned arrow rises in liftable mode along the line 52 as is also illustrated in FIG. 7.
  • FIG. 12c is a diagrammatic representation of the working mode. in tilting dart: starting from the position of minimum range, the dart tip is first moved in articulated mode, so that its end 46 describes a horizontal trajectory to a position G.
  • FIG. 14a is a schematic representation in side view of this articulation which can represent both the articulation of FIG. 10 and the articulation of FIG. 13a or the articulation of FIG. 13b with regard to the arrangement of the actuator 3 and rods 8 and 9. It will be noted in particular in this Figure 14a that an end 10 of the rod 8 is articulated on the counter-dart.
  • the articulation shown diagrammatically in FIG. 14b differs from the articulation represented in FIG. 14a in that the connecting rod 8 is articulated slightly further forward, on the other side of the articulation axis 45, on the tip. dart.
  • FIG. 14c shows a variant in which the connecting rod 8 articulates at 10 at the axis of articulation 45.
  • the free end of the jack rod is articulated at 15 on a median zone of the connecting rod 9 and not at the joint 7 between the connecting rod 9 and the connecting rod 8.
  • Figure 14d shows an alternative embodiment of Figure 14c, wherein the rod 8 is articulated on the dart tip.
  • Figure 14e shows another alternative embodiment in which the rod 8 is articulated much further forward on the dart tip; the entire system connecting rods + cylinder is located below the axis of articulation 45.
  • the head of the cylinder rod is articulated in 15 in a central zone of the connecting rod 9, the foot of the arrow has a recess (not shown in the figure) for housing rod and cylinder when the dart is folded against the foot of arrow.
  • the connecting rod 8 is also articulated substantially forward on the dart tip.
  • it is the middle part of the connecting rod 9 which articulates with the foot of arrow, while the ends of the connecting rod 9 articulate respectively at 7 and 14 to the connecting rod 8 and to the cylinder head.
  • FIG. 14g shows an articulation in which the cylinder rod articulates directly on the axis 45 between the jib and the jib, whereas the rods 8 and 9 have a joint joint 7, not at the end of the jib. cylinder rod, but on the cylinder, near the exit point of the cylinder rod.
  • the hinge pin 45 is arranged so that the dart tip can be folded against the foot of the arrow, subject, in as regards the joints shown in Figures 14e and 14g, a corresponding recess in the foot of the arrow or in the dart.
  • the joints shown in Figures 14a to 14g for the third embodiment are adaptable mutatis mutandis to the first two embodiments.
  • the third embodiment of the dart carries a lift bridge 50 located approximately vertically above the articulation foot of arrow / dart. It goes without saying that the first and second modes of execution of the hoist may also be provided with such a bridge 50.
  • the lifting apparatus comprises a movable counterweight, illustrated by FIGS. , 16, 17, exerting a moment of force opposite to that exerted by the boom on the turret or pivoting platform of the crane and on the pylon 29, automatically adjustable according to the respective positions of the jib and the dart .
  • FIG. 15 shows the upper part of a tower crane mounted on a pylon 29, and comprising a pivoting platform 112.
  • the jib foot 31 and the jib 41 are aligned with each other , on both sides of the articulation 45.
  • FIG. 25 also shows the tie rod 25 and the articulation cylinder 3.
  • the underside of the platform 112 bears, on the side opposite the arrow, a counterweight arm 114 pivoting, one end 121 is articulated in rotation to the platform.
  • the other end of the pivoting arm 114 carries a counterweight 113, including the displacement, and therefore the variation of the moment of force exerted on the pylon 29 and the platform 112 is provided by pivoting the pivoting arm 114.
  • the rotation of the pivoting arm 114 is controlled by two counterweight cables 115.
  • One end of the counterweight cables 115 is fixed at a fixed point 122 of the platform.
  • the two cables 115 pass through two pulleys 118 carried by the pivoting arm 114, over two return pulleys 117 fixed to the platform, then over two pulleys 127 carried on either side by the top of the punch 16.
  • the cables 115 are attached to the dart 41 at a point 116 located at the joint 45, in the area where the dart is reinforced.
  • the cables 115 are thus arranged on either side of the jib foot 31 and the counter-jib 42.
  • FIG. 16 shows an embodiment of the invention which differs from the embodiment shown in FIG. 15 only in that the cables 115 are fixed at points 116 'of the foot of the arrow 31, situated in the vicinity of the articulation 45 foot of arrow / dart. The foot of the arrow is reinforced at this level.
  • each cable 115, passing over the pulley 118 is arranged in duplicate between the point 122 and the arm 114, allows servo the angle of inclination of the arm 114, between a substantially horizontal position and a substantially vertical position, at the angle of inclination of the jib foot, also between a substantially horizontal position and a substantially vertical position, and without use of additional motor winding or unwinding cables 115.
  • FIG. 17 shows a particular embodiment of the pulleys 118 and their mounting on the arm 114.
  • the pulleys 118 are carried by a pivoting pulley arm 119 rotatably mounted on the counterweight arm 114 by its end 123. assembly formed by the pulley arm 119 and the pulleys 118 is extended by a second arm 124 on which is fixed a counterweight 120, which, by weighing the assembly formed by the pulley arm 119 and the pulleys 118 exerts a tension on the cables 115 and keeps them taut when the jib foot 31 is in a position close to the vertical.
  • a fixed additional counterweight 125 may be placed on or under the platform.
  • the stroke of the counterweight 113 towards the pylon 29 is limited by an abutment cable 126, stretched in FIG. 17, not tensioned in FIGS. 15 and 16.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Jib Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

The crane consists of a pylon (21) with a jib foot (31) pivoted to its tip by one end (35) and having the jib (41) articulated to its other end (36). The jib has its tip (43) on one side of its pivot point (45) and a counter-jib (42) on the other, and the jib is retained by an assembly with one or more posts (16), a tie member (25) and at least one two-way power cylinder connecting the foot and jib. The foot and counterjib are designed to allow the jib tip to be aligned with the foot.

Description

La présente invention concerne un engin de levage à flèche distributrice travaillant en mode articulé ou en mode relevable pour le levage et la manutention de charges, tel que défini dans le préambule de la revendication 1.The present invention relates to a lifting gear with articulating boom operating in articulated mode or in lift mode for lifting and handling loads, as defined in the preamble of claim 1.

Pour permettre la manutention de charges sur des chantiers de construction, on utilise habituellement des grues à flèche distributrice horizontale orientable sur laquelle coulisse un chariot servant de guide à des moyens de suspension.To allow the handling of loads on construction sites, it is usual to use horizontal directional jib cranes on which slides a carriage serving as a guide to suspension means.

Dans certaines circonstances, par exemple lorsque les chantiers sont encombrés ou lorsque la législation nationale interdit le survol de parcelles jouxtant le chantier, on leur préfère soit des grues à flèche distributrice relevable et orientable, soit des grues à flèche distributrice articulée orientable. Les grues à flèche distributrice relevable ont l'avantage, par rapport aux grues à flèche horizontale de hauteurs de pylône comparables, de pouvoir amener des charges à de plus grandes hauteurs.In certain circumstances, for example when work sites are congested or when national legislation prohibits overflight of parcels adjoining the site, they are preferred either cranes with raising and orientable distributing boom or articulated articulated boom directional cranes. Lift-up boom cranes have the advantage over horizontal boom cranes of comparable tower heights that they can bring loads to higher heights.

Toutefois, ces deux types de grues présentent certains inconvénients par rapport aux grues à flèche horizontale. D'une part, leurs portées minimales étant relativement élevées, la manipulation de charges à proximité immédiate de la base des grues ne peut être assurée. D'autre part, il est très difficile de contrôler une régularité de la vitesse de distribution des charges qui permette d'éviter tout balancement intempestif.However, these two types of cranes have some disadvantages compared to horizontal boom cranes. On the one hand, their minimum spans being relatively high, the handling of loads in the immediate vicinity of the base of the cranes can not be assured. On the other hand, it is very difficult to control a regularity of the speed of distribution of the loads which makes it possible to avoid any inopportune swing.

Le brevet FR 2605619 décrit une grue de type défini d'entrée, qui combine les effets d'une grue à flèche distributrice articulée avec ceux d'une grue à flèche distributrice relevable, lui conférant ainsi une certaine polyvalence. De plus, le mât de cette grue a l'avantage d'être dépliable et repliable et ceci de façon automatique.Patent FR 2605619 describes a crane type defined entry, which combines the effects of an articulated jib crane with those of a crane luffing distributive boom, giving it a certain versatility. In addition, the mast of this crane has the advantage of being unfoldable and foldable and this automatically.

Toutefois, du fait de la conception des articulations de la flèche distributrice, cette grue possède toujours une portée minimale importante. De plus, le gain de hauteur sous crochet obtenu lorsque la pointe de la flèche est relevée reste relativement faible, ne pouvant dépasser une amplitude angulaire équivalente à 30° par rapport à l'horizontale, du fait de l'angle que forment toujours la fléchette et le pied de flèche.However, because of the design of the articulations of the distributing boom, this crane always has a minimum important range. In addition, the hook height gain obtained when the tip of the boom is raised remains relatively low, can not exceed an angular amplitude equivalent to 30 ° relative to the horizontal, because of the angle that always form the dart and the foot of the arrow.

D'autre part, lorsque cette grue est repliée et posée sur un châssis porteur roulant, spécialement conçu pour son transport, l'ensemble routier ainsi formé est tout juste admis à passer sous un gabarit de 4 mètres, l'autorisant à accéder sur le réseau routier. Toutefois, cet ensemble ne peut pas circuler sur certains axes secondaires à gabarit restreint.On the other hand, when this crane is folded and placed on a rolling chassis, specially designed for its transport, the road assembly thus formed is just admitted to go under a template of 4 meters, allowing it to access on the road network. However, this set can not circulate on some secondary axes with restricted size.

La présente invention a pour but la réalisation d'un engin de levage à flèche distributrice orientable polyvalente, pouvant tout aussi bien être utilisé comme une grue à flèche distributrice relevable que comme une grue à flèche distributrice articulée ou encore comme une grue à fléchette inclinable, la transformation d'une fonction à l'autre devant se faire le plus simplement possible.The object of the present invention is to provide a multi-purpose steerable jib crane that can be used as a lifting luffing jib crane as well as an articulated jib crane or as a tilting jib crane. the transformation from one function to another must be done as simply as possible.

La présente invention a également pour but la réalisation d'un engin de levage à flèche distributrice orientable polyvalente qui, lorsqu'il travaille comme une grue à flèche distributrice articulée, possède une portée minimale très faible, mais une portée maximale la plus élevée possible.Another object of the present invention is to provide a lifting device with a steerable distributing boom. versatile which, when working as an articulated boom articulated crane, has a very small minimum reach, but a maximum maximum reach possible.

La présente invention a aussi pour but la réalisation d'un engin de levage à flèche distributrice orientable polyvalente capable de distribuer une charge avec une vitesse régulière, en particulier avec une vitesse horizontale constante lorsqu'il travaille comme une grue à flèche distributrice articulée.It is another object of the present invention to provide a versatile steerable steerable lifting apparatus capable of delivering a load with a steady speed, particularly with a constant horizontal speed when working as an articulated steer boom.

La présente invention a encore pour but la réalisation d'un engin de levage à flèche distributrice orientable polyvalente, qui lorsqu'il travaille comme une grue à flèche distributrice relevable permet la hauteur sous crochet la plus élevée possible.Another object of the present invention is to provide a versatile steerable jib crane which, when working as a luffing jib crane, allows the highest possible hook height.

La présente invention a enfin pour but la réalisation d'un engin de levage à flèche distributrice orientable polyvalente qui, lorsque la flèche est articulée sur un pylône articulé, puisse être replié de manière la plus compacte possible de telle sorte qu'il puisse être placé dans un conteneur de type marin en vue de son transport.Finally, the object of the present invention is to provide a multipurpose steerable jib lifting device which, when the boom is articulated on an articulated pylon, can be folded as compactly as possible so that it can be placed in a marine type container for transportation.

A cet effet, la présente invention a pour objet un engin de levage à flèche distributrice orientable travaillant en mode articulé ou en mode relevable pour le levage et la manutention de charges tel que défini d'entrée chez lequel la partie du pied de flèche voisine de ladite deuxième extrémité et la contre-fléchette présentent des formes conjuguées permettant à la pointe de fléchette de venir en position alignée avec le pied de flèche.For this purpose, the subject of the present invention is a lifting device with a steerable directional jib operating in articulated mode or in lift mode for lifting and handling of loads as defined at the entrance where the part of the foot of the arrow next to said second end and counter-jib have conjugate shapes allowing the dart tip to align with the jib foot.

Le tirant de flèche peut être relié à la pointe de fléchette en passant par au moins une contrefiche de relevage solidaire de la fléchette.The tie rod can be connected to the dart tip through at least one lift strut integral with the dart.

La contrefiche de relevage peut être agencée sensiblement à la jonction entre la contre-fléchette et la pointe de la fléchette.The lifting strut can be arranged substantially at the junction between the counter-dart and the tip of the dart.

La contre-fléchette et la partie du pied de flèche voisine de sa deuxième extrémité peuvent présenter des profils prismatiques et peuvent venir en contact l'une contre l'autre lorsque pied de flèche et fléchette sont alignés.The counter-jib and the portion of the jib foot adjacent to its second end may have prismatic profiles and may come into contact with each other when the jib foot and the jib are aligned.

La partie du pied de flèche voisine de sa deuxième extrémité peut présenter la forme d'une fourche à deux branches et que la contre-fléchette peut venir se loger dans l'espace entre les deux branches.The part of the jib foot near its second end may have the shape of a fork with two branches and that the counter-jib can be housed in the space between the two branches.

Le pied de flèche peut être constitué de deux poutres parallèles et que la contre-fléchette peut venir se loger dans l'écartement entre les deux poutres.The foot of the boom may consist of two parallel beams and the counter-jib can be housed in the spacing between the two beams.

Le pied de flèche et la fléchette peuvent être reliés par deux vérins d'articulation identiques, montés symétriquement par rapport au plan de symétrie verticale de l'engin de levage.The jib foot and the dart can be connected by two identical hinge cylinders, mounted symmetrically with respect to the vertical plane of symmetry of the hoist.

Le ou les vérins d'articulation peuvent relier directement le pied de flèche à la contre-fléchette.The hinge cylinder (s) can directly connect the boom foot to the counter-jib.

Le ou les vérins d'articulation peuvent relier directement pied de flèche et pointe de fléchette.The hinge cylinder (s) can directly connect the boom foot and the dart tip.

Chaque vérin d'articulation peut relier le pied de flèche et la fléchette par l'intermédiaire de deux bielles.Each hinge cylinder can connect the foot of the arrow and the dart via two connecting rods.

Lesdites bielles peuvent être articulées l'une à l'autre et au vérin par un même axe de rotation.Said connecting rods can be articulated to one another and the cylinder by the same axis of rotation.

Selon un mode d'exécution préféré de l'invention, particulièrement avantageux pour les grues-tours, l'engin de levage comporte un contrepoids mobile dont la position est asservie à l'angle d'inclinaison du pied de flèche. Le contrepoids mobile équilibre ainsi la grue en fonction de la position de la flèche.According to a preferred embodiment of the invention, which is particularly advantageous for tower cranes, the lifting apparatus comprises a mobile counterweight the position of which is enslaved to the angle of inclination of the foot of the arrow. The mobile counterweight thus balances the crane according to the position of the boom.

Ce contrepoids mobile peut être fixé à une première extrémité d'un bras de contrepoids pivotant, dont la deuxième extrémité est articulée en rotation à la tourelle ou plate-forme de l'engin de levage, du côté opposé à la flèche. Le contrepoids est relié à la flèche, à proximité de l'articulation pied de flèche/fléchette par au moins un câble de contrepoids passant par dessus le poinçon. La présence du ou des câble(s) de contrepoids permet de diminuer l'importance du câble et du moteur de relevage de la flèche. Ce câble de contrepoids peut être fixé à la fléchette, en particulier à la partie renforcée de l'articulation fléchette/pied de flèche.This movable counterweight can be attached to a first end of a pivoting counterweight arm, the second end of which is articulated in rotation to the turret or platform of the hoist, the side opposite the arrow. The counterweight is connected to the boom, near the boom / jib joint by at least one counterweight cable passing over the punch. The presence of the counterweight cable (s) makes it possible to reduce the importance of the cable and the motor for raising the boom. This counterweight cable can be attached to the dart, in particular to the reinforced part of the dart / boom joint.

L'autre extrémité du câble de contrepoids peut être fixée à la plate-forme, le câble de contrepoids passant sur une poulie portée par le bras de contrepoids pivotant. De cette manière, l'angle du bras pivotant, et par conséquent le moment de retenue du contrepoids, est directement asservi à l'angle de la flèche sans utiliser de moteur auxiliaire.The other end of the counterweight cable may be attached to the platform, the counterweight cable passing over a pulley carried by the pivoting counterweight arm. In this way, the angle of the pivoting arm, and therefore the counterweight holding moment, is directly controlled by the boom angle without the use of an auxiliary motor.

Pour que le câble de contrepoids reste parfaitement tendu, même lorsque le pied de flèche est complètement relevé, la poulie peut être reliée au bras de contrepoids pivotant par un bras de poulie également pivotant, articulé au bras de contrepoids, et l'ensemble formé par cette poulie et le bras de poulie peut comporter des moyens d'alourdissement pour tendre le câble de contrepoids.For the counterweight cable to remain perfectly taut, even when the boom foot is fully raised, the pulley can be connected to the pivoting counterbalance arm by an equally pivotable pulley arm, articulated to the counterweight arm, and the assembly formed by this pulley and the pulley arm may comprise weighting means for tensioning the counterweight cable.

De préférence l'engin de levage comporte deux câbles de contrepoids passant respectivement de part et d'autre du pied de flèche.Preferably the lifting machine comprises two counterweight cables respectively passing on either side of the foot of the boom.

Afin de faciliter la compréhension de l'invention, de ses caractéristiques et avantages, plusieurs modes de réalisation sont présentés ci-dessous, en se référant au dessin dans lequel:

  • la figure 1 représente en perspective un premier mode d'exécution de l'engin de levage avec une flèche distributrice en position de travail en mode articulé et, en arrière plan, en mode relevable;
  • la figure 2 représente, par une vue en élévation, le premier mode d'exécution de l'engin de levage ayant une flèche distributrice en position repliée le long du pylône;
  • la figure 3 représente, par des vues superposées en élévation, différentes étapes du repliage du pylône du premier mode d'exécution de l'engin de levage;
  • les figures 4a à 4d représentent, par des vues en élévation, les différentes étapes de transformation du mode articulé au mode relevable de la flèche distributrice du premier mode d'exécution de l'engin de levage;
  • la figure 5 représente, par une vue en élévation, le premier mode d'exécution de l'engin de levage en position repliée;
  • les figures 6a à 6c représentent, par des vues en élévation, différents moyens pour transporter le premier mode d'exécution de l'engin de levage.
  • la figure 7 représente, par des vues superposées en élévation, différentes phases de fonctionnement du premier mode d'exécution de l'engin de levage avec une flèche distributrice en position de travail en mode relevable;
  • la figure 8 représente, par une vue en perspective, le détail d'un dispositif pour le blocage de la flèche distributrice en position de travail en mode relevable du deuxième mode d'exécution de l'engin de levage;
  • la figure 9 représente en perspective un deuxième mode d'exécution de l'engin de levage avec une flèche distributrice en position de travail en mode articulé et, en arrière plan, en mode relevable;
  • la figure 10 représente, par une vue en perspective, l'articulation par vérin entre pied de flèche et fléchette d'une variante du deuxième mode d'exécution de l'engin de levage en position de travail en mode articulé.
  • la figure 11 représente, par une vue en élévation, l'articulation par vérin entre pied de flèche et fléchette de la variante de la figure 10, avec la flèche distributrice en position repliée.
  • les figures 12a, 12b et 12c représentent, par des vues schématiques en élévation, un troisième mode d'exécution de l'engin de levage, avec sa flèche distributrice respectivement en mode articulé, relevable et inclinable.
  • les figures 13a et 13b représentent par des vues en perspective l'articulation, respectivement avec un vérin et deux vérins, entre pied de flèche et fléchette du troisième mode d'exécution de l'engin de levage en position de travail en mode articulé.
  • les figures 14a, 14b, 14c, 14d, 14e, 14f et 14g représentent schématiquement des variantes de l'articulation par vérin(s) entre pied de flèche et fléchette du troisième mode d'exécution, en position de travail en mode articulé.
  • la figure 15 représente un mode d'exécution de l'engin de levage avec un contrepoids mobile.
  • la figure 16 représente un autre mode d'exécution de l'engin de levage avec un contrepoids mobile.
  • la figure 17 représente une vue agrandie du système de contrepoids mobile.
In order to facilitate understanding of the invention, its features and advantages, several embodiments are presented below, with reference to the drawing in which:
  • Figure 1 shows in perspective a first embodiment of the hoist with a dispensing boom in working position in articulated mode and, in the background, in lift mode;
  • Figure 2 shows, in elevation view, the first embodiment of the hoist having a distributing boom in the folded position along the pylon;
  • Figure 3 shows, by superimposed views in elevation, different stages of the folding of the pylon of the first embodiment of the hoist;
  • Figures 4a to 4d show, in elevational views, the various stages of transformation of the articulated mode liftable mode of the distributing boom of the first embodiment of the hoist;
  • Figure 5 shows, in elevation view, the first embodiment of the hoist in the folded position;
  • Figures 6a to 6c show, in elevational views, different means for carrying the first embodiment of the hoist.
  • FIG. 7 represents, by superimposed views in elevation, different phases of operation of the first embodiment of the lifting machine with a distributing arrow in the working position in the lift mode;
  • 8 shows, in a perspective view, the detail of a device for locking the dispensing boom in working position in the lift mode of the second embodiment of the lifting machine;
  • Figure 9 shows in perspective a second embodiment of the hoist with a dispensing boom in working position in articulated mode and, in the background, in lift mode;
  • 10 shows, in a perspective view, the articulation by cylinder between the jib and dart of a variant of the second embodiment of the lifting gear in working position articulated mode.
  • Figure 11 shows, in elevational view, the articulation by cylinder between the jib and arrow of the variant of Figure 10, with the dispensing arrow in the folded position.
  • Figures 12a, 12b and 12c show, in schematic views in elevation, a third embodiment of the hoist, with its dispensing boom respectively articulated, lift and tilt.
  • Figures 13a and 13b show in perspective views the articulation, respectively with a jack and two cylinders, between the jib and dart of the third embodiment of the lifting gear in working position articulated mode.
  • FIGS. 14a, 14b, 14c, 14d, 14e, 14f and 14g schematically represent variants of the articulation by jack (s) between the jib and dart of the third embodiment, in the articulated operating position.
  • Figure 15 shows an embodiment of the hoist with a mobile counterweight.
  • Figure 16 shows another embodiment of the hoist with a mobile counterweight.
  • Figure 17 shows an enlarged view of the mobile counterweight system.

Pour simplifier la rédaction et faciliter la compréhension de l'invention, des numéros de référence identiques ont été donnés sur plusieurs figures à des pièces identiques ou équivalentes de plusieurs variantes d'exécutionTo simplify the drafting and to facilitate the understanding of the invention, identical reference numbers have been given in several figures to identical or equivalent parts of several variant embodiments

Le premier mode d'exécution de l'engin de levage à flèche distributrice orientable travaillant en mode articulé ou en mode relevable pour le levage et la manutention de charges tel que représenté à la figure 1 comporte un pylône repliable constitué de deux tronçons articulés l'un à l'autre, à savoir un pied de pylône 21 et un pylône supérieur 22. Le pied de pylône est monté pivotant autour d'un axe horizontal sur la partie avant d'un châssis tournant ou tourelle 12. Le pylône supérieur porte, pivotant autour d'une articulation horizontale 26, d'une part une flèche distributrice 31, 41 articulée et relevable et, d'autre part, deux poinçons symétriques 16 reliés à leur extrémité par un axe portant deux poulies 17. La tourelle 12 est montée pivotante autour d'un axe vertical sur un châssis porteur 11.The first embodiment of the steerable jib lifting gear operating in articulated mode or in lift mode for lifting and handling loads as shown in Figure 1 comprises a folding tower consisting of two articulated sections the to one another, namely a pylon foot 21 and an upper pylon 22. The pylon foot is pivotally mounted about a horizontal axis on the front part of a rotating frame or turret 12. The upper pylon carries, pivoting about a horizontal hinge 26, on the one hand an articulating and liftable distributing boom 31, 41 and, on the other hand, two symmetrical punches 16 connected at their end by an axis carrying two pulleys 17. The turret 12 is mounted pivoting about a vertical axis on a carrier frame 11.

Le pylône est maintenu en position de travail grâce à un ensemble d'éléments constitué d'un lest 13 fixé sur la partie arrière de la tourelle 12, de contrefiches de redressage 23 reliant le pylône à la tourelle, de deux tirants 25, tous reliés à un dispositif de commande non représenté sur le dessin, pouvant être par exemple un treuil placé sur la tourelle 12, les deux tirants passant respectivement sur les deux poulies 17 des poinçons 16.The pylon is held in the working position thanks to a set of elements consisting of a ballast 13 fixed on the rear part of the turret 12, straightening struts 23 connecting the pylon to the turret, two tie rods 25, all connected to a control device not shown in the drawing, which may be for example a winch placed on the turret 12, the two tie rods respectively passing on the two pulleys 17 of the punches 16.

La flèche distributrice articulée et relevable est constituée de deux pièces maîtresses, à savoir un pied de flèche 31 et une fléchette 41, articulées l'une à l'autre.The hinged articulated and liftable arrow consists of two centerpieces, namely an arrow foot 31 and a dart 41, articulated to one another.

L'extrémité inférieure 35 du pied de flèche 31 est reliée, par l'intermédiaire de l'articulation horizontale 26, au sommet du pylône supérieur 22. L'autre extrémité 36 du pied de flèche est reliée, par l'intermédiaire d'une articulation horizontale 45, à la fléchette 41. L'articulation 45 divise la fléchette 41 en deux parties dissymétriques, à savoir une contre-fléchette 42, portant à son extrémité deux poulies 44, et une pointe de fléchette 43, portant à son extrémité 46 deux poulies guidant des moyens de suspension de charge constitués d'un câble de levage 53, d'une moufle et d'un crochet de levage 54.The lower end 35 of the jib foot 31 is connected, via the horizontal joint 26, at the top of the upper pylon 22. The other end 36 of the foot of the boom is connected, by means of a horizontal articulation 45, to the dart 41. The hinge 45 divides the dart 41 into two asymmetric parts, namely a counter-dart 42, carrying at its end two pulleys 44, and a dart tip 43, bearing at its end 46 two pulleys guiding load suspension means consisting of a hoisting rope 53, a muffle and a lifting hook 54.

Telle que présentée au premier plan de la figure 1, lorsque l'extrémité 46 de la pointe de fléchette 43 se trouve en position A, la flèche distributrice se trouve en position de travail en mode articulé. Les tirants 25 passent successivement dans les gorges des poulies 17 des deux poinçons 16, puis dans celles des deux poulies 44 de la contre-fléchette 42, et sont fixés sur la fléchette 41. Les tirants 25 forment avec le pied de flèche 31, les deux poinçons 16 et la contre-fléchette 42 un quadrilatère déformable. Cette configuration géométrique permet à l'extrémité 46 de la pointe de la fléchette 43 de se déplacer selon une trajectoire approximativement plane et horizontale, représentée par ligne tiretée 51.As shown in the foreground of Figure 1, when the end 46 of the dart tip 43 is in position A, the dispensing boom is in the working position articulated mode. The tie rods 25 pass successively into the grooves of the pulleys 17 of the two punches 16, then into those of the two pulleys 44 of the counter-dart 42, and are fixed on the dart 41. The tie rods 25 form with the jib foot 31, the two punches 16 and the counter-dart 42 a deformable quadrilateral. This geometric configuration allows the end 46 of the tip of the dart 43 to move in an approximately flat horizontal trajectory, represented by dashed line 51.

En arrière plan de la figure 1, lorsque l'extrémité 46 de la pointe de fléchette 43 se trouve en position B, la flèche distributrice se trouve en position de travail en mode relevable. La fléchette 41 se trouve alignée avec le pied de flèche 31. On constate que les tirants 25 sont fixés sur la fléchette 41, à proximité de l'extrémité 46 de la pointe de fléchette 43. Dans cette configuration, ces tirants 25 ne passent plus que sur les poulies 17 des deux poinçons 16, et forment à présent un triangle avec les deux poinçons 16 et l'ensemble aligné pied de flèche 31 - fléchette 41.In the background of Figure 1, when the end 46 of the dart tip 43 is in position B, the dispensing boom is in the working position in lift mode. The dart 41 is aligned with the foot of the arrow 31. It is noted that the tie rods 25 are fixed on the dart 41, near the end 46 of the dart tip 43. In this configuration, these tie rods 25 do not pass only on the pulleys 17 of the two punches 16, and now form a triangle with the two punches 16 and the set aligned arrow-foot 31 - dart 41.

La partie en arrière plan et en perspective de la figure 1 présentant la flèche distributrice en position de travail en mode relevable, montre que le pied de flèche 31 est en fait constitué de deux poutres parallèles 31a et 31b montées latéralement de part et d'autre, d'une part, du pylône supérieur 22, et, d'autre part, de la fléchette 41.The part in the background and in perspective of FIG. 1 presenting the dispensing arrow in the working position in the lift mode, shows that the boom foot 31 is in fact consisting of two parallel beams 31a and 31b mounted laterally on either side, on the one hand, of the upper pylon 22, and, on the other hand, of the dart 41.

Une telle construction à deux poutres est avantageuse. En effet, la contre-fléchette 42 peut se loger au sein de la fente ou de l'écartement 34 entre ces deux poutres 31a et 31b et un alignement parfait de la fléchette 41 avec le pied de flèche 31 est alors obtenu, ce qui, comme décrit plus loin, permet un gain de hauteur sous crochet important par rapport aux flèches polyvalentes de l'art antérieur qui possèdent une forme coudée.Such a construction with two beams is advantageous. Indeed, the counter-jib 42 can be housed within the slot or spacing 34 between these two beams 31a and 31b and a perfect alignment of the dart 41 with the jib foot 31 is then obtained, which, as described below, allows a large hook height gain compared to multipurpose arrows of the prior art which have a bent shape.

De plus, une telle construction à deux poutres renforce la structure de l'engin de levage en offrant une meilleure résistance à la torsion.In addition, such a two-beam construction strengthens the structure of the hoist by providing better resistance to torsion.

Le mouvement général de l'ensemble en mode articulé, régi par la géométrie particulière du quadrilatère (44, 45, 26, 17), est connu de l'art antérieur. Il est toutefois important de mettre en évidence le rôle joué par deux des éléments de l'engin de levage, à savoir le système de commande du mouvement et la fente entre les deux poutres du pied de flèche.The general movement of the assembly in articulated mode, governed by the particular geometry of the quadrilateral (44, 45, 26, 17), is known from the prior art. However, it is important to highlight the role played by two of the elements of the hoist, namely the motion control system and the slot between the two beams of the boom foot.

Dans une configuration en mode articulé dans laquelle l'extrémité 46 de la pointe de fléchette 43 se trouve par exemple en position A, on peut bloquer le dispositif commandant les tirants 25 de façon à maintenir constante la distance entre les poulies 17 et 44 pendant toutes les phases de modification de l'angle de l'articulation de la flèche distributrice.In an articulated mode configuration in which the end 46 of the dart tip 43 is for example in position A, it is possible to lock the device controlling the tie rods 25 so as to keep the distance between the pulleys 17 and 44 constant for all the phases of modification of the angle of the articulation of the distributing arrow.

Le dispositif de commande (1) de l'articulation 45 est constitué d'un système à bielles et à vérin(s) à double effet, qui sera décrit en détail plus loin.The control device (1) of the hinge 45 consists of a system with rods and jack (s) double effect, which will be described in detail below.

Afin d'amener l'extrémité 46 de la pointe de fléchette 43 vers la position D correspondant à la portée minimale de l'engin de levage, on opère simplement par le mouvement relatif de la tige par rapport au cylindre du ou des vérins. Le crochet de levage 54 se rapproche progressivement du pylône.In order to bring the end 46 of the dart tip 43 to the position D corresponding to the minimum reach of the lifting gear, the operation is simply by the relative movement of the rod relative to the cylinder of the cylinder or cylinders. The lifting hook 54 is progressively closer to the pylon.

Grâce à ce mode simple de commande de l'angle pied de flèche/fléchette, il devient facile de contrôler la régularité de la vitesse de translation de l'extrémité 46 de la pointe de fléchette et d'éviter ainsi tout balancement intempestif de la charge au cours de sa manipulation.Thanks to this simple mode of controlling the angle of the arrow / jib, it becomes easy to control the regularity of the speed of translation of the end 46 of the dart tip and thus avoid any untimely sway of the load during its handling.

Pendant le mouvement horizontal raccourcissant la portée, l'extrémité 46 de la pointe de fléchette 43 passe par la position intermédiaire C, correspondant approximativement à la position de portée minimale qui était obtenue avec les engins de levage de l'art antérieur. Maintenant, du fait de la présence de la fente ou écartement 34 entre les deux poutres 31a et 31b du pied de flèche 31 qui permet à la pointe de fléchette 43 de s'y loger, le mouvement peut se poursuivre jusqu'à amener l'extrémité 46 de la pointe de fléchette 43 à la position D, tout contre le pied de flèche. Cette position D correspond à la portée minimale de l'engin de levage.During the horizontal movement shortening the range, the end 46 of the dart tip 43 passes through the intermediate position C, corresponding approximately to the minimum reach position that was obtained with the prior art hoisting gear. Now, because of the presence of the slot or gap 34 between the two beams 31a and 31b of the jib 31 which allows the dart tip 43 to lodge there, the movement can continue until it brings the end 46 of the dart tip 43 at the position D, all against the foot of arrow. This position D corresponds to the minimum range of the hoist.

Partant de cette position D correspondant à la portée minimale et pour revenir à la position A, il suffit d'opérer le mouvement inverse de la tige du(des) vérin(s) d'articulation, tout en maintenant le blocage du dispositif de commande des tirants 25 pour que l'extrémité 46 de la pointe de la fléchette 43 s'éloigne progressivement du sommet du pylône supérieur 22.Starting from this position D corresponding to the minimum range and to return to the position A, it is sufficient to operate the reverse movement of the rod (s) of the cylinder (s) hinge, while maintaining the blocking of the control device tie rods 25 so that the end 46 of the tip of the dart 43 moves progressively away from the top of the upper pylon 22.

En poursuivant le mouvement au-delà de la position A, toujours en maintenant le blocage du dispositif de commande des tirants 25, on effectue la transformation du mode articulé en mode relevable de la flèche distributrice.Continuing the movement beyond the position A, still maintaining the blocking of the control device of the tie rods 25, the transformation of the articulated mode is performed in liftable mode of the dispensing arrow.

Comme cela est symbolisé par les flèches blanches 56, 57 de la figure 4a, le pied de flèche 31 s'abaisse et l'extrémité 46 de la pointe de la fléchette se redresse. A la figure 4b, les tirants 25 se trouvent presque alignés avec la fléchette 41. A la figure 4c, le pied de flèche poursuit sa descente, les tirants 25 sont alors désolidarisés des poulies 44 de la contre-fléchette 42.As is symbolized by the white arrows 56, 57 of Figure 4a, the foot of the arrow 31 lowers and the end 46 of the tip of the dart is recovering. In FIG. 4b, the tie rods 25 are almost aligned with the dart 41. In FIG. 4c, the foot of the arrow continues its descent, the tie rods 25 are then detached from the pulleys 44 of the counter-dart 42.

Enfin, à la figure 4d, la position du point d'attache 48 des tirants 25 sur la pointe de la fléchette 43 devient apparente. La fléchette 41 se trouve parfaitement alignée avec le pied de flèche 31. Un dispositif de blocage 61, décrit ci-après, maintenant cet alignement peut être prévu optionnellement, en plus du système à vérin (1). La flèche distributrice se trouve alors en position de travail en mode relevable. L'extrémité 46 de la pointe de fléchette 43 se trouvant à la position E, la flèche distributrice se trouve déjà inclinée de quelques degrés par rapport à l'horizontale.Finally, in Figure 4d, the position of the point of attachment 48 of the tie rods 25 on the tip of the dart 43 becomes apparent. The dart 41 is perfectly aligned with the jib foot 31. A locking device 61, described below, maintaining this alignment may be optionally provided in addition to the jack system (1). The dispensing arrow is then in working position in lift mode. The end 46 of the dart tip 43 is at the position E, the dispensing boom is already inclined a few degrees from the horizontal.

La figure 8 présente en détail les éléments constituant le dispositif de blocage 61 solidaires, d'une part, de chacune des deux poutres 31a et 31b du pied de flèche 31 et, d'autre part, de la contre-fléchette 42 de la fléchette 41 et coopérant ensemble afin de maintenir alignés la fléchette 41 et le pied de flèche 31. Pour en faciliter la compréhension, les tirants et le système de vérins d'articulation ont été supprimés sur cette figure.FIG. 8 shows in detail the elements constituting the locking device 61 integral, on the one hand, with each of the two beams 31a and 31b of the jib foot 31 and, on the other hand, with the counter-jib 42 of the jib 41 and cooperating together to keep the dart 41 and the jib foot 31 aligned. For ease of understanding, the tie rods and the hinge jack system have been removed in this figure.

Sous chacune des deux poutres 31a et 31b sont montées en saillies et placées en vis-à-vis respectivement une pièce 62a et une pièce 62b. Dans chacune de ces deux pièces se trouve un cylindre de verrouillage respectivement 63a et 63b coulissant dans une direction transversale horizontale respectivement au sein des logements 64a et 64b. Les cylindres de verrouillage sont maintenus en partie à l'extérieur de leur logement sous l'action respectivement des ressorts 65a et 65b. Sous la contre-fléchette 42 se trouve, montée en saillie, une pièce en U renversé 66, dont les deux faces latérales sont biseautées. Deux forures 67a et 67b, destinées à servir respectivement de logement à là partie externe de chacun des cylindres de verrouillage 63a et 63b, ont été pratiquées respectivement sur les deux faces latérales de la pièce 66.Under each of the two beams 31a and 31b are mounted in projections and placed vis-a-vis respectively a workpiece 62a and a workpiece 62b. In each of these two parts there is a locking cylinder respectively 63a and 63b sliding in a horizontal transverse direction respectively within the housings 64a and 64b. The locking cylinders are held partly outside their housing under the action respectively springs 65a and 65b. Under the counter-jib 42 is mounted, projecting, an U-shaped part 66, whose two side faces are bevelled. Two bores 67a and 67b, intended respectively to serve as housing for the outer portion of each of the locking cylinders 63a and 63b, have been made respectively on the two lateral faces of the part 66.

En phase finale d'alignement de la fléchette 41 et du pied de flèche 31, l'extrémité de la partie externe des deux cylindres de verrouillage 63a et 63b entre en contact avec la pièce 66. La forme biseautée des faces latérales de cette pièce jouant le rôle de guide, les cylindres de verrouillage sont progressivement introduits en coulissant au sein de leurs logements respectifs 64a et 64b et les ressorts 65a et 65b sont progressivement comprimés. La phase d'alignement se poursuivant, les extrémités des cylindres de verrouillage vont se trouver au regard respectivement des forures 67a et 67b.In the final phase of alignment of the dart 41 and the jib foot 31, the end of the outer portion of the two locking cylinders 63a and 63b comes into contact with the piece 66. The beveled shape of the lateral faces of this piece playing As a guide, the locking cylinders are progressively slid into their respective housings 64a and 64b and the springs 65a and 65b are progressively compressed. As the alignment phase continues, the ends of the locking cylinders will be facing the holes 67a and 67b, respectively.

L'alignement précis des cylindres 63a, 63b avec les forures 67a, 67b est obtenu grâce à deux butées 68a, placées respectivement de part et d'autre de la pièce 66. A cette position particulière, sous l'action des ressorts 65a et 65b, les cylindres de verrouillages 63a et 63b s'engagent respectivement dans les deux forures 67a et 67b, assurant ainsi le verrouillage en position alignée de la fléchette avec le pied de flèche. La flèche distributrice peut alors fonctionner en mode relevable.The precise alignment of the cylinders 63a, 63b with the bores 67a, 67b is obtained thanks to two stops 68a, placed respectively on either side of the piece 66. At this particular position, under the action of the springs 65a and 65b , the locking cylinders 63a and 63b respectively engage in the two bores 67a and 67b, thus ensuring the locking in the aligned position of the dart with the foot of the boom. The dispensing arrow can then operate in lift mode.

Les performances de l'engin de levage en mode relevable sont illustrées par la figure 7.The performance of the lifting gear in lift mode is illustrated in Figure 7.

L'inclinaison de la flèche distributrice obtenue lors de l'alignement de la flèche distributrice et correspondant à la position E est de 7° au-dessus de l'horizontale. Une portée de plus de 24 mètres correspond à la portée maximale que l'on peut obtenir avec cet engin de levage. La hauteur sous crochet est de plus de 24 mètres à partir du haut du pylône.The inclination of the distributing arrow obtained during the alignment of the distributing arrow and corresponding to the position E is 7 ° above the horizontal. A range of more than 24 meters is the maximum range that can be achieved with this hoist. The hook height is more than 24 meters from the top of the pylon.

A la position F, une inclinaison maximale de la flèche de près de 80° est obtenue. La portée minimale est alors de 6 mètres et la hauteur sous crochet est de près de 42 mètres.At the position F, a maximum inclination of the arrow of nearly 80 ° is obtained. The minimum range is then 6 meters and the height under hook is nearly 42 meters.

Pour repasser en mode de travail articulé, deux dispositifs électromagnétiques 69a, solidaires respectivement des deux pièces 62a et 62b, sont actionnés afin de permettre le retrait total des deux cylindres de verrouillage 63a et 63b des forures 67a et 67b. Le dispositif de commande (1) d'articulation à vérin permet de rompre l'alignement de la fléchette avec le pied de flèche.To return to the articulated working mode, two electromagnetic devices 69a, integral respectively with the two parts 62a and 62b, are actuated to allow the total withdrawal of the two locking cylinders 63a and 63b of the holes 67a and 67b. The control device (1) for articulation with a cylinder makes it possible to break the alignment of the dart with the jib foot.

Pour replier totalement l'engin de levage, il convient tout d'abord de placer la flèche distributrice en position de travail en mode articulé puis d'amener l'extrémité 46 de la pointe de flèche 43 à la position D correspondant à la portée minimale. La pointe de flèche 43 vient alors se loger entre les deux poutres du pied de flèche 31.To completely fold the lifting gear, it is first necessary to place the dispensing boom in working position in articulated mode and then to bring the end 46 of the boom tip 43 to the position D corresponding to the minimum reach . The arrowhead 43 then comes to be housed between the two beams of the jib foot 31.

L'étape suivante consiste à relâcher les tirants 25. Le pied de flèche 31, encadrant la pointe de fléchette 43, bascule alors vers l'avant de l'engin de levage et vient s'appuyer le long du pylône supérieur 22, comme cela est illustré à la figure 2. En effet, l'articulation 26, supportant le pied de flèche 31, est placée à l'avant du pylône supérieur. Une articulation 27, supportant les deux poinçons 16, est placée à l'arrière du pylône supérieur.The next step is to release the tie rods 25. The arrow foot 31, flanking the dart tip 43, then tilts towards the front of the hoist and comes to rest along the upper pylon 22, like this is shown in Figure 2. Indeed, the joint 26, supporting the foot of arrow 31, is placed in front of the upper pylon. A hinge 27, supporting the two punches 16, is placed at the rear of the upper pylon.

Le repliage du pylône est illustré sur la figure 3 à l'aide d'une succession de vues superposées. Pour clarifier le dessin, la majeure partie de la flèche distributrice dans une position pliée et rabattue sur le pylône supérieur comme décrit ci-dessus a été supprimée sur cette figure.The folding of the tower is illustrated in FIG. 3 using a succession of superimposed views. To clarify the drawing, most of the dispensing boom in a folded and folded position on the upper pylon as described above has been removed in this figure.

Comme le montrent les figures 2 et 3, l'extrémité de chacun des poinçons 16, opposée à celle portant les poulies 17, est montée en articulation à une élingue de redressage 20, évitant ainsi le basculement des poinçons vers l'arrière de l'engin, l'élingue étant reliée à une contrefiche de redressement 23. Le sommet du pylône est prolongé par deux pièces 28 formant butée pour les deux poinçons, évitant ainsi leur basculement vers l'avant de l'engin de levage. Chacune des poutres du pied de flèche 31 porte un chevalet de renvoi 32 destiné au redressement de la flèche. Sur chacun de ces chevalets se trouve une butée 33 s'appuyant respectivement sur chacun des poinçons, évitant ainsi le basculement du pied de flèche 31 vers l'arrière de l'engin de levage.As shown in Figures 2 and 3, the end of each of the punches 16, opposite that carrying the pulleys 17, is mounted in articulation with a straightening sling 20, thus avoiding the tilting of the punches towards the back of the machine, the sling being connected to a straightening strut 23. The top of the pylon is extended by two parts 28 forming a stop for the two punches, thus preventing their tilting forward of the hoist. Each of the beams of the boom foot 31 carries a return bridge 32 for the recovery of the boom. On each of these trestles is a stop 33 relying respectively on each of the punches, thus avoiding the tilting of the boom foot 31 towards the rear of the hoist.

En actionnant un vérin à double effet 18 qui s'appuie sur le pied de pylône 21 et agit sur un système de bielles 19, le pylône se plie autour d'une articulation horizontale 24 et s'incline grâce à la présence des contrefiches de redressage 23. Les élingues de redressage 20, chacune liée en articulation à l'extrémité d'un poinçon 16, font pivoter ces poinçons autour de l'articulation 27.By actuating a double-acting jack 18 which rests on the tower foot 21 and acts on a system of connecting rods 19, the pylon folds around a horizontal articulation 24 and tilts thanks to the presence of straightening struts. 23. The straightening slings 20, each hingedly connected to the end of a punch 16, rotate these punches around the hinge 27.

A la fin du processus de repliage, tous les éléments de l'engin de levage se trouvent à l'horizontale, le pylône supérieur 22 reposant sur le pied de pylône 21 et supportant la fléchette 41 encadrée par les deux poutres du pied de flèche 31, les poinçons 16 et les élingues de redressages 20 étant placés aux cotés de ces éléments. Cette configuration est représentée sur la figure 5.At the end of the folding process, all the elements of the hoist are horizontal, the upper pylon 22 resting on the pylon foot 21 and supporting the dart 41 framed by the two beams of the boom foot 31 , the punches 16 and straightening slings 20 being placed alongside these elements. This configuration is shown in FIG.

Un avantage supplémentaire offert par la flèche distributrice dont le pied de flèche est constitué de deux poutres est obtenu avec un engin de levage ayant un pylône repliable. Il s'agit du gain de place obtenu lorsque l'engin de levage est totalement replié, autorisant ainsi une large variété de mode de transport.An additional advantage offered by the distributing boom whose boom foot consists of two beams is obtained with a hoist having a folding pylon. This is the space saving achieved when the hoist is fully folded, allowing a wide variety of modes of transport.

Le fait que la fléchette 41 puisse être logée entre les poutres 31a et 31b du pied de flèche 31 permet d'obtenir un gain de place important en hauteur. Par la compacité de l'engin de levage en position repliée, de nombreuses possibilités de transport sont offertes, aucune ne nécessitant la construction spécifique d'un châssis porteur roulant. Les figures 6a à 6c illustrent certaines de ces possibilités.The fact that the dart 41 can be housed between the beams 31a and 31b of the jib foot 31 provides significant space saving in height. Thanks to the compactness of the hoist in the folded position, many transport possibilities are offered, none requiring the specific construction of a rolling chassis. Figures 6a to 6c illustrate some of these possibilities.

Selon la figure 6a, l'engin de levage replié est posé sur un chariot 71 et son châssis porteur 11 est attaché à l'arrière d'un tracteur 72. Selon la figure 6b, l'engin de levage est posé sur une remorque articulée 73 à un tracteur 72.According to Figure 6a, the folded hoist is placed on a carriage 71 and its support frame 11 is attached to the rear of a tractor 72. According to Figure 6b, the hoist is placed on an articulated trailer 73 to a tractor 72.

Selon la figure 6c, l'engin de levage est placé dans un conteneur 74 connu sous le nom de "conteneur marin" et dont les dimensions normalisées sont de 12040 millimètres pour la longueur et de 2450 millimètres pour la hauteur. Auparavant et grâce à la présence d'une articulation verticale 47, la contre-fléchette 42 a été repliée sur elle-même, offrant ainsi un gain de place cette fois en longueur. Le conteneur peut ensuite être transporté de manière classique, par exemple sur une remorque à plate-forme plane 75.According to Figure 6c, the hoist is placed in a container 74 known as "marine container" and whose standardized dimensions are 12040 millimeters for the length and 2450 millimeters for the height. Previously and thanks to the presence of a vertical articulation 47, the counter-dart 42 has been folded back on itself, thus offering a space saving this time in length. The container can then be transported in a conventional manner, for example on a flat platform trailer 75.

L'engin de levage a été décrit ci-dessus avec un châssis porteur 11 reposant à même le sol. Il est bien entendu qu'il peut être également monté, quel que soit le type de pylône qui le compose, sur un châssis porteur roulant, éventuellement automoteur.The hoist has been described above with a carrier frame 11 resting on the ground. It is understood that it can also be mounted, regardless of the type of pylon that composes it, on a rolling chassis, possibly self-propelled.

Certains des avantages obtenus en utilisant une flèche distributrice dont le pied de flèche possède une fente permettant le logement de tout ou partie de la fléchette viennent d'être illustrés avec un engin de levage dont le pylône est repliable. Cependant, une même polyvalence et des performances semblables de la flèche distributrice sont également obtenues lorsque l'on remplace ce pylône repliable par une tour classique ou encore par un pylône télescopique.Some of the advantages obtained by using a dispensing boom whose boom foot has a slot allowing the housing of all or part of the dart have just been illustrated with a hoist whose pylon is collapsible. However, the same versatility and similar performance of the dispensing boom are also obtained when replacing the folding tower by a conventional tower or by a telescopic pylon.

Dans un deuxième mode d'exécution de l'engin de levage, particulièrement avantageux lorsque le pylône est une tour classique 29 telle que représentée à la figure 9, le pied de flèche 31 est constitué d'une seule poutre en forme de fourche comportant une fente longitudinale 34 ouverte à l'extrémité du pied de flèche portant l'articulation 45. La longueur de cette fente est suffisante pour que la contre-fléchette 42 puisse s'y loger de façon à permettre l'alignement entre la fléchette 41 et le pied de flèche 31. Un dispositif de blocage, similaire à celui (61) du premier mode d'exécution peut être prévu en option et assure l'alignement de la fléchette avec le pied de flèche.In a second embodiment of the hoist, particularly advantageous when the pylon is a conventional tower 29 as shown in Figure 9, the boom 31 consists of a single fork-shaped beam having a longitudinal slot 34 open at the end of the jib foot bearing the hinge 45. The length of this slot is sufficient for the counter-jib 42 can be housed there to allow alignment between the dart 41 and the boom foot 31. A locking device, similar to that (61) of the first embodiment may be provided as an option and ensures the alignment of the dart with the jib foot.

La figure 10 montre le dispositif de commande 1 de l'articulation entre pied de flèche et fléchette d'une variante du deuxième mode de réalisation. Les deux branches 31a, 31b de la fourche portent un axe transversal 2 autour duquel peut pivoter un vérin 3. Le vérin 3 est articulé à l'axe 2 par une extrémité 4 du cylindre de vérin 5. La tige de vérin 6 est articulée à son extrémité libre par un axe transversal 7 à un système de deux paires de bielles 8a, 8b, 9a, 9b. Chaque bielle est articulée en rotation autour de l'axe 7 par l'une de ses extrémités. L'autre extrémité des bielles 8a, 8b est articulée en 10a sur la contre-fléchette. La deuxième extrémité de chaque bielle 9a, 9b est articulée en 14a, 14b respectivement aux branches 31a, 31b de la fourche. Lorsque la tige 6 du vérin 3 pénètre dans le cylindre 5, les bielles viennent les unes contre les autres et la fléchette vient s'aligner avec le pied de flèche. A l'inverse, lorsque la tige 6 sort du cylindre 5, la pointe de fléchette se rabat contre le pied de flèche.Figure 10 shows the control device 1 of the articulation between the jib and dart of a variant of the second embodiment. The two branches 31a, 31b of the fork carry a transverse axis 2 around which can pivot a jack 3. The jack 3 is articulated to the axis 2 by an end 4 of the cylinder cylinder 5. The cylinder rod 6 is hinged to its free end by a transverse axis 7 to a system of two pairs of rods 8a, 8b, 9a, 9b. Each rod is articulated in rotation about the axis 7 by one of its ends. The other end of the rods 8a, 8b is hinged at 10a on the counter-dart. The second end of each link 9a, 9b is articulated at 14a, 14b respectively to the branches 31a, 31b of the fork. When the rod 6 of the cylinder 3 enters the cylinder 5, the rods come against each other and the dart is aligned with the foot of the arrow. Conversely, when the rod 6 leaves the cylinder 5, the dart tip is folded against the foot of the arrow.

L'homme du métier comprendra sans peine que l'articulation présentée à la figure 10 peut également être utilisée dans le cadre du premier mode d'exécution de l'engin de levage, dont le pied de flèche est constitué de deux poutres. Dans ce cas, la longueur des bielles et de la tige de vérin est calculée de sorte à ce que, lorsque la tige de vérin est sortie au maximum du cylindre, la fléchette vient se loger entre les deux poutres du pied de flèche, comme cela est illustré à la figure 11.Those skilled in the art will understand without difficulty that the joint shown in Figure 10 can also be used in the context of the first embodiment of the hoist, whose boom foot consists of two beams. In this case, the length of the connecting rods and the cylinder rod is calculated so that, when the cylinder rod is out at the maximum of the cylinder, the dart is housed between the two beams of the boom foot, as this is shown in Figure 11.

Les figures 12a, 12b et 12c représentent schématiquement un troisième mode d'exécution de l'engin de levage. Le pylône est une tour classique 29. Au sommet du pylône s'articule une première extrémité 35 d'un pied de flèche 31. La deuxième extrémité 37 du pied de flèche présente la forme d'un prisme. A la pointe du prisme est articulée une fléchette tournant autour d'un axe horizontal 45. Cet axe d'articulation subdivise la fléchette respectivement en une pointe de fléchette similaire aux pointes de fléchette des deux premiers modes d'exécution et en une contre-fléchette 49 qui, vue en élévation latérale, présente également un profil prismatique, dont l'angle au sommet est choisi de telle sorte que la fléchette, par rotation autour de l'articulation 45 peut venir s'aligner avec le pied de flèche comme cela est illustré par la figure 12b, la contre-fléchette 49 se plaçant contre l'extrémité 37 en forme de prisme du pied de flèche.Figures 12a, 12b and 12c schematically show a third embodiment of the hoist. The pylon is a conventional tower 29. At the top of the pylon is articulated a first end 35 of an arrow foot 31. The second end 37 of the arrow foot has the shape of a prism. At the tip of the prism is articulated a dart rotating about a horizontal axis 45. This hinge axis subdivides the dart respectively into a dart tip similar to the dart tips of the first two embodiments and a counter-dart 49 which, in side elevation, also has a prismatic profile, whose apex angle is selected so that the dart, by rotation about the hinge 45 can come to align with the foot of arrow as it is illustrated in FIG. 12b, the counter-dart 49 being placed against the end 37 in the form of a prism of the jib foot.

Deux variantes de cette articulation et du dispositif de commande 1 d'articulation sont illustrées par les figures 13a et 13b. Comme le montrent les figures 13a et 13b, la deuxième extrémité 37 du pied de flèche est une poutre présentant le profil d'un prisme. Au sommet du prisme est articulé en 45 une fléchette. Sur la figure 13a, la contre-fléchette est constituée de deux branches symétriques 49a, 49b séparées par une fente. Le dispositif d'articulation à 1 vérin et une paire de bielles vient se loger dans cette fente.Two variants of this articulation and of the articulation control device 1 are illustrated by FIGS. 13a and 13b. As shown in Figures 13a and 13b, the second end 37 of the boom is a beam having the profile of a prism. At the top of the prism is articulated in 45 a dart. In FIG. 13a, the counter-jib consists of two symmetrical branches 49a, 49b separated by a slot. The hinge device 1 cylinder and a pair of rods is housed in this slot.

Sur la figure 13b, la contre-fléchette est constituée d'une seule poutre 49 de profil prismatique. Un double système de vérins 3a, 3b et bielles 8a, 8b, 9a, 9b vient se placer symétriquement de part et d'autre de la contre-fléchette.In FIG. 13b, the counter-jib consists of a single beam 49 with a prismatic profile. A double system of jacks 3a, 3b and rods 8a, 8b, 9a, 9b is placed symmetrically on either side of the counter-jib.

En comparant les figures 10, 13a et 13b, l'homme du métier comprendra aisément que les trois dispositifs d'articulation sont fonctionnellement identiques, quoique différents dans leur structure, puisque l'articulation de la figure 10 comprend un seul vérin agissant sur deux paires de bielles symétriques, la figure 13a montre un seul vérin agissant sur une seule paire de bielles se déplaçant à l'intérieur de la fente entre les deux branches de la contre-fléchette et la figure 13b montre deux systèmes identiques et symétriques de bielles et vérins.By comparing FIGS. 10, 13a and 13b, those skilled in the art will readily understand that the three articulation devices are functionally identical, although different in their structure, since the articulation of FIG. 10 comprises a single jack acting on two pairs. of symmetrical connecting rods, Figure 13a shows a single cylinder acting on a single pair of connecting rods moving inside the slot between the two branches of the counter-dart and Figure 13b shows two identical and symmetrical systems of connecting rods and jacks.

Les figures 12a, 12b et 12c illustrent les trois modes de travail de l'engin de levage selon l'invention. Sur chacune de ces figures, le déplacement de l'extrémité 46 de la pointe de la fléchette est représenté en traits tiretés.Figures 12a, 12b and 12c illustrate the three working modes of the hoist according to the invention. In each of these figures, the displacement of the end 46 of the tip of the dart is shown in dashed lines.

Sur la figure 12 a, qui représente un mode de travail en flèche articulée, l'extrémité 46 se déplace essentiellement selon une ligne horizontale 51 qui ne s'élève qu'à proximité de la position de portée maximale. Sur la figure 12 b, au-delà de cette position de portée maximale, la flèche alignée s'élève en mode relevable selon la ligne 52 comme cela est également illustré par la figure 7. Sur la figure 12c est représenté schématiquement le mode de travail en fléchette inclinable: en partant de la position de portée minimale, la pointe de fléchette est d'abord déplacée en mode articulé, de telle sorte que son extrémité 46 décrive une trajectoire horizontale jusqu'en une position G. A partir de cette position G, l'angle du pied de flèche par rapport à l'horizontale est maintenu constant au moyen d'une compensation de longueur du tirant 25, et, à l'aide du dispositif de commande 1 de l'articulation à vérin(s), la fléchette est relevée pour décrire un arc de cercle 55 centré sur l'axe 45, comme l'illustre la figure 12c. L'intérêt de ce mode de travail est également illustré par la figure 12c, sur laquelle on a représenté schématiquement des bâtiments élevés en arrière plan: Ce mode de travail permet de déplacer une charge à altitude relativement basse, pratiquement à l'horizontale, parallèlement à la façade du bâtiment, puis de l'élever pour finalement, après rotation de la tour de l'engin de levage, déposer la charge sur le sommet de l'immeuble, et ce à une portée élevée.In Fig. 12a, which shows an articulated boom mode, the end 46 moves substantially along a horizontal line 51 which rises only in the vicinity of the maximum reach position. In FIG. 12b, beyond this maximum range position, the aligned arrow rises in liftable mode along the line 52 as is also illustrated in FIG. 7. FIG. 12c is a diagrammatic representation of the working mode. in tilting dart: starting from the position of minimum range, the dart tip is first moved in articulated mode, so that its end 46 describes a horizontal trajectory to a position G. From this position G the angle of the foot of the boom relative to the horizontal is kept constant by means of a length compensation of the tie rod 25, and with the aid of the control device 1 of the cylinder joint (s), the dart is raised to describe an arc 55 centered on the axis 45, as shown in Figure 12c. The interest of this mode of work is also illustrated in Figure 12c, on which is schematically represented high buildings in the background: This mode of work allows to move a load at relatively low altitude, practically horizontally, in parallel at the front of the building, then to raise it to finally, after rotation of the tower of the lifting machine, to deposit the load on the top of the building, and this with a high reach.

L'articulation entre pied de flèche et fléchette peut être réalisée au moyen de nombreuses variantes du système d'articulation à bielles et à vérins sans sortir du cadre de l'invention. La figure 14a est une représentation schématique en vue latérale de cette articulation qui peut représenter aussi bien l'articulation de la figure 10 que l'articulation de la figure 13a ou l'articulation de la figure 13b en ce qui concerne l'agencement du vérin 3 et des bielles 8 et 9. On notera en particulier sur cette figure 14a qu'une extrémité 10 de la bielle 8 s'articule sur la contre-fléchette.The articulation between the jib and the dart can be achieved by means of numerous variants of the articulation system with rods and jacks without departing from the scope of the invention. FIG. 14a is a schematic representation in side view of this articulation which can represent both the articulation of FIG. 10 and the articulation of FIG. 13a or the articulation of FIG. 13b with regard to the arrangement of the actuator 3 and rods 8 and 9. It will be noted in particular in this Figure 14a that an end 10 of the rod 8 is articulated on the counter-dart.

L'articulation représentée schématiquement sur la figure 14b diffère de l'articulation représentée sur la figure 14a en ce que la bielle 8 s'articule légèrement plus en avant, de l'autre côté de l'axe d'articulation 45, sur la pointe de fléchette.The articulation shown diagrammatically in FIG. 14b differs from the articulation represented in FIG. 14a in that the connecting rod 8 is articulated slightly further forward, on the other side of the articulation axis 45, on the tip. dart.

La figure 14c montre une variante dans laquelle la bielle 8 s'articule en 10 au niveau de l'axe d'articulation 45. L'extrémité libre de la tige de vérin s'articule en 15 sur une zone médiane de la bielle 9 et non pas au niveau de l'articulation 7 entre la bielle 9 et la bielle 8.FIG. 14c shows a variant in which the connecting rod 8 articulates at 10 at the axis of articulation 45. The free end of the jack rod is articulated at 15 on a median zone of the connecting rod 9 and not at the joint 7 between the connecting rod 9 and the connecting rod 8.

La figure 14d montre une variante d'exécution de la figure 14c, où la bielle 8 s'articule sur la pointe de fléchette.Figure 14d shows an alternative embodiment of Figure 14c, wherein the rod 8 is articulated on the dart tip.

La figure 14e montre une autre variante d'exécution dans laquelle la bielle 8 s'articule nettement plus en avant 10 sur la pointe de fléchette ; l'ensemble du système bielles + vérin est situé en dessous de l'axe d'articulation 45. La tête de la tige de vérin s'articule en 15 dans une zone médiane de la bielle 9, le pied de flèche présente un évidement (non représenté sur la figure) pour loger bielle et vérin lorsque la fléchette se rabat contre le pied de flèche.Figure 14e shows another alternative embodiment in which the rod 8 is articulated much further forward on the dart tip; the entire system connecting rods + cylinder is located below the axis of articulation 45. The head of the cylinder rod is articulated in 15 in a central zone of the connecting rod 9, the foot of the arrow has a recess ( not shown in the figure) for housing rod and cylinder when the dart is folded against the foot of arrow.

Dans la figure 14f, la bielle 8 s'articule également en 10 nettement en avant sur la pointe de fléchette. Dans cette variante, c'est la partie médiane de la bielle 9 qui s'articule au pied de flèche, alors que les extrémités de la bielle 9 s'articulent respectivement en 7 et 14 à la bielle 8 et à la tête de vérin.In FIG. 14f, the connecting rod 8 is also articulated substantially forward on the dart tip. In this alternatively, it is the middle part of the connecting rod 9 which articulates with the foot of arrow, while the ends of the connecting rod 9 articulate respectively at 7 and 14 to the connecting rod 8 and to the cylinder head.

La figure 14g montre une articulation dans laquelle la tige de vérin s'articule directement sur l'axe 45 entre pointe de flèche et contre-fléchette, alors que les bielles 8 et 9 ont une articulation commune 7 non pas à l'extrémité de la tige de vérin, mais sur le cylindre, à proximité du point de sortie de la tige du cylindre.FIG. 14g shows an articulation in which the cylinder rod articulates directly on the axis 45 between the jib and the jib, whereas the rods 8 and 9 have a joint joint 7, not at the end of the jib. cylinder rod, but on the cylinder, near the exit point of the cylinder rod.

On notera dans les articulations représentées aux figures 14a, 14b et 14g, la présence de quatre axes de rotation/articulation horizontaux alors que les articulations représentées sur les figures 14c, 14d, 14e et 14f présentent cinq axes d'articulation.Note in the joints shown in Figures 14a, 14b and 14g, the presence of four horizontal axes of rotation / articulation while the joints shown in Figures 14c, 14d, 14e and 14f have five axes of articulation.

On notera également que sur toutes les articulations représentées aux figures 13a, 13b, 14a à 14g, l'axe d'articulation 45 est agencé de telle sorte que la pointe de fléchette peut venir se rabattre contre le pied de flèche, sous réserve, en ce qui concerne les articulations représentées aux figures 14e et 14g, d'un évidement correspondant dans le pied de flèche ou dans la fléchette. L'homme du métier comprendra aisément que toutes les articulations représentées dans les figures 14a à 14g pour le troisième mode de réalisation sont adaptables mutatis mutandis aux deux premiers modes de réalisation.Note also that on all the joints shown in Figures 13a, 13b, 14a to 14g, the hinge pin 45 is arranged so that the dart tip can be folded against the foot of the arrow, subject, in as regards the joints shown in Figures 14e and 14g, a corresponding recess in the foot of the arrow or in the dart. Those skilled in the art will readily understand that all the joints shown in Figures 14a to 14g for the third embodiment are adaptable mutatis mutandis to the first two embodiments.

On notera également que sur les figures 12a-14g, le troisième mode d'exécution de la fléchette porte un chevalet de relevage 50 situé approximativement à l'aplomb de l'articulation pied de flèche/fléchette. Il va de soi que les premier et deuxième modes d'exécution de l'engin de levage peuvent également être munis d'un tel chevalet 50.Note also that in Figures 12a-14g, the third embodiment of the dart carries a lift bridge 50 located approximately vertically above the articulation foot of arrow / dart. It goes without saying that the first and second modes of execution of the hoist may also be provided with such a bridge 50.

Le travail en mode relevable de chacune des flèches distributrices des trois modes d'exécution précédemment décrits de l'engin de levage s'opère de manière identique. Une fois la fléchette 41 et le pied de flèche 31 alignés et cette position verrouillée, en opérant une traction sur les tirants 25, par exemple à l'aide d'un treuil placé sur la tourelle 12 et non représenté sur le dessin, on relève progressivement la flèche distributrice. Les différentes amplitudes susceptibles d'être obtenues, représentées sur la figure 7 pour le premier mode d'exécution, s'obtiennent de façon similaire pour les autres modes d'exécution.The work in liftable mode of each of the distributing arrows of the three previously described modes of execution of the lifting gear operates identically. Once the dart 41 and the foot of arrow 31 aligned and this locked position, by pulling on the tie rods 25, for example using a winch placed on the turret 12 and not shown in the drawing, it is noted gradually the distributing arrow. The different amplitudes that can be obtained, represented in FIG. 7 for the first embodiment, are obtained in a similar manner for the other embodiments.

De telles performances sont comparables à celles habituellement obtenues avec des grues à flèche distributrice fonctionnant uniquement en mode relevable.Such performance is comparable to that usually achieved with distributor boom cranes operating only in lift mode.

Dans un mode d'exécution préféré de l'invention, particulièrement avantageux pour des grues-tours telles qu'illustrées précédemment par les figures 9, 12a, 12b, 12c, l'engin de levage comporte un contrepoids mobile, illustré par les figures 15, 16, 17, exerçant un moment de force opposé à celui qu'exerce la flèche sur la tourelle ou plate-forme pivotante de la grue et sur le pylône 29, automatiquement ajustable en fonction des positions respectives du pied de flèche et de la fléchette.In a preferred embodiment of the invention, particularly advantageous for tower cranes as illustrated previously in FIGS. 9, 12a, 12b, 12c, the lifting apparatus comprises a movable counterweight, illustrated by FIGS. , 16, 17, exerting a moment of force opposite to that exerted by the boom on the turret or pivoting platform of the crane and on the pylon 29, automatically adjustable according to the respective positions of the jib and the dart .

La figure 15 montre la partie supérieure d'une grue tour montée sur un pylône 29, et comportant une plate-forme pivotante 112. Sur cette figure 15, le pied de flèche 31 et la fléchette 41 sont alignés l'un avec l'autre, de part et d'autre de l'articulation 45. On reconnaît également sur la figure le tirant de flèche 25 et le vérin d'articulation 3. Le dessous de la plate-forme 112 porte, du côté opposé à la flèche, un bras de contrepoids 114 pivotant, dont une extrémité 121 est articulée en rotation à la plate-forme. L'autre extrémité du bras pivotant 114 porte un contrepoids 113, dont le déplacement, et par conséquent la variation du moment de force exercé sur le pylône 29 et la plate-forme 112 est assurée par le pivotement du bras pivotant 114. La rotation du bras pivotant 114 est commandée par deux câbles de contrepoids 115. Une extrémité des câbles de contrepoids 115 est fixée en un point fixe 122 de la plate-forme. Les deux câbles 115 passent par deux poulies 118 portées par le bras pivotant 114, par dessus deux poulies de renvoi 117 fixées à la plate-forme, puis par dessus deux poulies 127 portées de part et d'autre par le sommet du poinçon 16. Les câbles 115 sont fixés à la fléchette 41 en un point 116 situé au niveau de l'articulation 45, dans la zone où cette fléchette est renforcée. Les câbles 115 sont donc agencés de part et d'autre du pied de flèche 31 et de la contre-fléchette 42.FIG. 15 shows the upper part of a tower crane mounted on a pylon 29, and comprising a pivoting platform 112. In this FIG. 15, the jib foot 31 and the jib 41 are aligned with each other , on both sides of the articulation 45. FIG. 25 also shows the tie rod 25 and the articulation cylinder 3. The underside of the platform 112 bears, on the side opposite the arrow, a counterweight arm 114 pivoting, one end 121 is articulated in rotation to the platform. The other end of the pivoting arm 114 carries a counterweight 113, including the displacement, and therefore the variation of the moment of force exerted on the pylon 29 and the platform 112 is provided by pivoting the pivoting arm 114. The rotation of the pivoting arm 114 is controlled by two counterweight cables 115. One end of the counterweight cables 115 is fixed at a fixed point 122 of the platform. The two cables 115 pass through two pulleys 118 carried by the pivoting arm 114, over two return pulleys 117 fixed to the platform, then over two pulleys 127 carried on either side by the top of the punch 16. The cables 115 are attached to the dart 41 at a point 116 located at the joint 45, in the area where the dart is reinforced. The cables 115 are thus arranged on either side of the jib foot 31 and the counter-jib 42.

La figure 16 montre un mode d'exécution de l'invention qui ne diffère du mode d'exécution montré sur la figure 15 que par le fait que les câbles 115 sont fixés en des points 116' du pied de flèche 31, situé à proximité de l'articulation 45 pied de flèche/fléchette. Le pied de flèche est renforcé à ce niveau.FIG. 16 shows an embodiment of the invention which differs from the embodiment shown in FIG. 15 only in that the cables 115 are fixed at points 116 'of the foot of the arrow 31, situated in the vicinity of the articulation 45 foot of arrow / dart. The foot of the arrow is reinforced at this level.

L'emplacement du point de fixation 116 ou 116' dans cette zone proche de l'articulation, combiné au fait que chaque câble 115, en passant par dessus la poulie 118 est agencé en double entre le point 122 et le bras 114, permet d'asservir l'angle d'inclinaison du bras 114, entre une position substantiellement horizontale et une position substantiellement verticale, à l'angle d'inclinaison du pied de flèche, également entre une position substantiellement horizontale et une position substantiellement verticale, et ce sans employer de moteur additionnel enroulant ou déroulant les câbles 115.The location of the attachment point 116 or 116 'in this area near the joint, combined with the fact that each cable 115, passing over the pulley 118 is arranged in duplicate between the point 122 and the arm 114, allows servo the angle of inclination of the arm 114, between a substantially horizontal position and a substantially vertical position, at the angle of inclination of the jib foot, also between a substantially horizontal position and a substantially vertical position, and without use of additional motor winding or unwinding cables 115.

La figure 17 montre un mode d'exécution particulier des poulies 118 et de leur montage sur le bras 114. Les poulies 118 sont portées par un bras de poulie 119 pivotant, monté en rotation sur le bras de contrepoids 114 par son extrémité 123. L'ensemble formé par le bras de poulie 119 et les poulies 118 est prolongé par un deuxième bras 124 sur lequel est fixé un contrepoids 120, qui, en alourdissant l'ensemble formé par le bras de poulie 119 et les poulies 118 exerce une tension sur les câbles 115 et maintient ceux-ci tendus lorsque le pied de flèche 31 est dans une position proche de la verticale.FIG. 17 shows a particular embodiment of the pulleys 118 and their mounting on the arm 114. The pulleys 118 are carried by a pivoting pulley arm 119 rotatably mounted on the counterweight arm 114 by its end 123. assembly formed by the pulley arm 119 and the pulleys 118 is extended by a second arm 124 on which is fixed a counterweight 120, which, by weighing the assembly formed by the pulley arm 119 and the pulleys 118 exerts a tension on the cables 115 and keeps them taut when the jib foot 31 is in a position close to the vertical.

Un contrepoids supplémentaire fixe 125 peut être placé sur ou sous la plate-forme. La course du contrepoids 113 en direction du pylône 29 est limitée par un câble de butée 126, tendu sur la figure 17, non tendu sur les figures 15 et 16.A fixed additional counterweight 125 may be placed on or under the platform. The stroke of the counterweight 113 towards the pylon 29 is limited by an abutment cable 126, stretched in FIG. 17, not tensioned in FIGS. 15 and 16.

L'ajustement des contrepoids 113, 120 et 125, ainsi que l'ajustement des bras 114 et 119 permet d'équilibrer la grue de façon optimale, dans les différents modes de travail, relevable, inclinable et articulé.The adjustment of the counterweights 113, 120 and 125, as well as the adjustment of the arms 114 and 119 makes it possible to balance the crane optimally, in the different working modes, liftable, tilting and articulated.

Claims (18)

  1. A machine for lifting and handling loads with an articulated liftable placing jib, comprising a mast (21, 22, 29), a jib foot (31, 31a, 31b) articulated for rotation at its first end (35) at the top of the mast, and a jib head member (41) articulated for rotation at the second end (36, 37) of the jib foot, the said jib head member having, on each side of its axis of articulation (45) at the jib foot, respectively a jib head member tip (43) and a counter jib head member (42, 49, 49a, 49b), a jib holding assembly comprising at least one stay (16) and a jib tie (25), and actuating means (3, 3a, 3b) of the jib foot and of the jib head member, determining the angle between the jib foot and the jib head member, characterised in that the said second end of the jib foot and the counter jib head member have conjugate shapes enabling the tip of the jib head member to come into a position aligned with the jib foot, in liftable working mode.
  2. A machine according to claim 1, characterised in that the jib tie (25) is connected to the tip of the jib head member (43) by passing through at least one lifting bracket (50) fixed to the jib head member and in that the lifting bracket (50) is arranged substantially at the junction between the counter jib head member (42, 49, 49a, 49b) and the tip of the jib head member (43).
  3. A machine according to one of claims 1 or 2, characterised in that the counter jib head member (49, 49a, 49b) and the second end (37) of the jib foot have prismatic profiles and come into contact against each other when the jib foot and jib head member are aligned.
  4. A machine according to one of claims 1 or 2 , characterised in that the second end (36) of the jib foot has the form of a fork with two arms (31a, 31b) and in that the counter jib head member (42) comes to be housed in the space (34) between the two arms.
  5. A machine according to one of claims 1 or 2, characterised in that the jib foot consists of two parallel beams (31a, 31b) and in that the counter jib head member (42) comes to be housed in the space (34) between the two beams.
  6. A machine according to one of the preceding claims, characterised in that said actuating means comprise at least one double-acting articulation jack (3, 3a, 3b) connecting the jib foot to the jib head member.
  7. A machine according to one of the preceding claims, characterised in that the jib foot (31) and the jib head member (41) are connected by two identical articulation jacks (3a, 3b), mounted symmetrically with respect to the vertical plane of symmetry of the jib.
  8. A machine according to one of the preceding claims, characterised in that the articulation jack or jacks (3, 3a, 3b) directly connect the jib foot to the counter jib head member.
  9. A machine according to one of claims 1 to 7, characterised in that the articulation jack or jacks directly connect the jib foot and jib head member tip.
  10. A machine according to one of claims 1 to 7, characterised in that each articulation jack (3, 3a, 3b) connects the jib foot (31) and the jib head member (41) by means of two links (8, 8a, 8b, 9, 9a, 9b).
  11. A machine according to claim 10, characterised in that the said links are articulated on each other and on the jack by means of the same rotation shaft (7).
  12. A lifting machine with a placing jib according to one of claims 5 to 7, characterised in that it has a locking device comprising on the one hand two pieces (62a, 62b) fixed to the jib foot (31) and disposed opposite each other on each side of the slot (34), each of the said pieces being equipped with a sliding locking cylinder (63a, 63b), and on the other hand a counter piece (66) fixed to the counter jib head member (42) and having bevelled side faces each having a hole (67a, 67b), the assembly being arranged so that the cylinders (63a, 63b) can cooperate respectively with each of the holes when the jib head member is aligned with the jib foot.
  13. A machine according to one of claims 1 to 12, in particular a tower crane, characterised in that it comprises a movable counterweight (113) whose position is slaved to the angular inclination of the jib foot (31).
  14. A machine according to claim 13, characterised in that the said movable counterweight (113) is fixed to a first end of a pivoting counterweight arm (114) whose second arm (121) is rotationally articulated on the platform (112) of the machine, on the opposite side to the jib, and in that the said pivoting counterweight arm (114) is connected (115, 116') to the jib close to the articulation between jib foot and jib head member by means of at least one counterweight cable (115) passing over the said stay (16).
  15. A machine according to claim 14, characterised in that a first end (116) of the said counterweight cable (115) is fixed to the jib head member (41), in particular to the reinforced part of the jib head member/jib foot articulation.
  16. A machine according to one of claims 14 or 15, characterised in that the second end of the said counterweight cable (115) is fixed to the platform (112) and in that the said counterweight cable (115) passes over a pulley (118) carried by the said pivoting counterweight arm (114).
  17. A machine according to claim 16, characterised in that the said pulley (118) is connected to the said pivoting counterweight arm (114) by a pivoting pulley arm (119), articulated on the said pivoting counterweight arm, and in that the assembly formed by the said pulley (118) and the said pulley arm (119) comprises weighting means (120) for tensioning the said counterweight cable (115)
  18. A machine according to one of claims 14 to 17, characterised in that it has two counterweight cables (115) passing on each side of the jib foot (31).
EP01944862A 2000-07-11 2001-07-10 Articulated jib crane Expired - Lifetime EP1301431B9 (en)

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EP01944862A EP1301431B9 (en) 2000-07-11 2001-07-10 Articulated jib crane

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EP00810608 2000-07-11
EP00810608A EP1172323A1 (en) 2000-07-11 2000-07-11 Articulated jib crane
EP01944862A EP1301431B9 (en) 2000-07-11 2001-07-10 Articulated jib crane
PCT/CH2001/000432 WO2002004336A1 (en) 2000-07-11 2001-07-10 Articulated jib crane

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EP1301431A1 EP1301431A1 (en) 2003-04-16
EP1301431B1 EP1301431B1 (en) 2005-09-21
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AT (1) ATE304988T1 (en)
AU (2) AU2001267255B2 (en)
CA (1) CA2414173A1 (en)
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Also Published As

Publication number Publication date
DE60113546T2 (en) 2006-06-29
EP1301431A1 (en) 2003-04-16
WO2002004336A1 (en) 2002-01-17
EP1172323A1 (en) 2002-01-16
ATE304988T1 (en) 2005-10-15
CA2414173A1 (en) 2002-01-17
EP1301431B1 (en) 2005-09-21
NZ524020A (en) 2004-08-27
US20040026350A1 (en) 2004-02-12
AU2001267255B2 (en) 2006-05-04
AU6725501A (en) 2002-01-21
DE60113546D1 (en) 2006-02-02

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