EP1970344B1 - Flèche pour la distribution de béton pour véhicules de chantier et procédé de fabrication correspondant - Google Patents
Flèche pour la distribution de béton pour véhicules de chantier et procédé de fabrication correspondant Download PDFInfo
- Publication number
- EP1970344B1 EP1970344B1 EP08152672A EP08152672A EP1970344B1 EP 1970344 B1 EP1970344 B1 EP 1970344B1 EP 08152672 A EP08152672 A EP 08152672A EP 08152672 A EP08152672 A EP 08152672A EP 1970344 B1 EP1970344 B1 EP 1970344B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- extendable boom
- composite material
- boom
- segments
- segment
- 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.)
- Revoked
Links
Images
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
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0436—Devices for both conveying and distributing with distribution hose on a mobile support, e.g. truck
Definitions
- the present invention concerns a boom for the distribution of concrete, or other building material similar to concrete, used on heavy work vehicles, such as for example a truck or a concrete mixer.
- the distribution boom according to the invention comprises a plurality of articulated segments, pivoted to each other at the ends, which can be disposed either in a folded back configuration for transport, in which they define a minimum overall bulk, or in a working configuration in which they are progressively extended according to the overall length/height to be reached.
- the boom for the distribution of concrete according to the invention comprises at least a length of at least an articulated segment made of composite material.
- Heavy work vehicles used in the building sector are known, normally consisting of a truck on which an extendable and/or telescopically removable boom is mounted, articulated for the distribution and casting of concrete.
- the trucks may or may not be equipped with a concrete mixer.
- Extendable booms of the known type consist of a plurality of metal segments pivoted to each other and able to be folded back one over the other, so as to be able to assume a folded configuration in proximity with the truck, and a working configuration in which they are extended one with respect to the other and allow to reach areas even very distant from the truck.
- One purpose of the present invention is therefore to achieve an extendable boom for the distribution of concrete which can reach very great heights and/or lengths in its condition of maximum extension and which, in order to do this, does not entail unsustainable increases in weight and bulk.
- Another purpose is to obtain said boom at limited cost compared with current costs.
- Another purpose is to obtain advantages in the step of constructing and assembling the articulated extendable boom.
- the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
- an extendable boom for the distribution of concrete according to the present invention is able to be installed on a heavy work vehicle, and comprises a plurality of articulated segments, pivoted to each other at respective ends.
- At least one of the segments, or at least part of it along its length, that form the extendable boom is completely made, throughout its section, of composite material.
- the composite material used is carbon fiber.
- the composite material used consists of aramid fibers (Kevlar®), or other similar or comparable fibers, having characteristics substantially analogous to carbon in terms of resistance and rigidity.
- the composite material is made with uni-directional fibers or, according to a variant, with intertwined and/or interwoven fibers.
- composite material, and in particular carbon fiber or aramid fiber for making at least part of the distribution boom allows to increase the length and/or number of segments used, with the same overall weight; alternatively, the invention allows to reduce the overall weight while retaining the same length and/or number of segments.
- the composite material used is of the multi-layer type.
- the boom has a rectangular box-like section with rounded edges or oval.
- the boom according to the invention has longitudinal and/or transverse metal inserts for stiffening and/or connecting to specific equipment, for example the relative movement jack.
- the metal inserts may consist, according to specific applications and/or assembly positions along the boom, of thin sheets, bushings, plates, bars or lattices.
- the attachment for the jack which allows the relative segment of the boom to be extended/folded, is also made of composite material.
- a metal insert for connection of a movement jack, an adjacent segment or an auxiliary equipment is directly drowned in the boom of composite material.
- the metal attachment is made in a metal plate drowned in the boom of composite material.
- the metal attachment is fixed by means of pins inserted through bushings, rings, washers or suchlike, drowned in the composite material.
- the attachment for the jack is glued externally or internally to the structure of composite material.
- At least one of the two terminals that allow to actuate the articulated movement of two adjacent segments is made of composite material.
- At least one of the two movement terminals is made of metal.
- the metal movement terminal has anchoring fins drowned in the composite material.
- the metal movement terminal has anchoring fins connected to a plate, or to bushings or rings, drowned in the composite material.
- the terminal whether it is made of metal or composite material, is glued externally or internally to the structure of composite material.
- the articulated extendable boom has two or more longitudinal lengths of composite material alternating with intermediate lengths made of metal.
- the method to produce said composite boom is preferably selected from among the techniques of filament winding, pre-preg manual deposition with autoclave polymerization, or pultrusion.
- an extendable boom 10 able to distribute concrete or analogous material for the building trade, is shown in an assembled position on a heavy work vehicle 11, folded back for transport.
- the heavy vehicle 11 comprises a driver's cab 20 and a supporting platform 21 on which the boom is mounted.
- the extendable boom 10 comprises a plurality of articulated segments, in this case five, respectively a first 12, a second 13, a third 14, a fourth 15 and a fifth 16, pivoted to each other at the respective ends.
- a tube 17 is also present, for feeding and discharging the concrete.
- the whole of the articulated segments 12-16 can be rotated, even up to 360°, with respect to the axis of the vehicle 11.
- the first segment 12 in known manner, is pivoted to a turret 18, and is rotatable with respect thereto.
- the other segments 1-16 are sequentially pivoted to each other at respective ends and can be driven individually, by means of their own actuators, according to specific requirements.
- Each segment 12-16 serves to bear a tube inside which the concrete is made to flow, sent from a feed pump (not shown).
- a length of flexible tube (not shown), from which the concrete is delivered to the place of application, is normally connected to the last segment.
- one or the other of the articulated segments 12-16 is made, at least partly in its length but throughout its section, of composite material, preferably reinforced, for example carbon fiber, single- or multi-layer.
- composite material preferably reinforced, for example carbon fiber, single- or multi-layer.
- the possible number of layers is a function of the mechanical characteristics that the boom 10 has to have.
- aramid fibers or others analogous or comparable, in uni-directional or intertwined/interwoven form.
- the articulated segment 12-16 comprises a box-like structure 22 made of composite material, to at least one end of which terminals or front pieces are applied, made of steel 23, and intermediate attachment elements 26 for the movement jack, or other accessory or auxiliary equipment in the functioning of the segment 12-16.
- Both the terminal elements 23 and the intermediate elements 26 can be made of metal or they too can be made of molded composite material.
- the box-like structure 22 has a substantially rectangular section, reducing over its length, but it comes within the field of the invention that the section may be square or polygonal with more or less rounded angles, oval, or with other section suitable for the purpose.
- the box-like structure 22 advantageously has a metal insert 25, for example drowned and/or partly protruding from the box-like structure.
- the metal insert 25 can also be associated with a reinforcement structure made of fiber, as described in greater detail hereafter, in order to further stiffen the structure of the articulated segment in the terminal zone most subject to stress and wear during use.
- an insert 25 in the form of a metal plate can be drowned in the material of the box-like structure 22 of composite material and attached to it by means of binding fibers 32 made to pass through appropriate holes 29 made in the metal plate itself.
- longitudinal reinforcement elements or inserts 25 are shown, made of metal and drowned in the composite material of the box-like structure 22.
- the longitudinal reinforcement elements 25 can be disposed in any intermediate position whatsoever along the box-like structure 22 and can assume the form of plates 30 ( fig. 4 ), lattices 31 ( fig. 5 ), bars, sheets or combinations of these.
- At least one terminal 23 and the intermediate element 26 are fixed to the box-like structure 22 of composite material by means of pins 33 which are inserted through bushings or rings 34 drowned in the composite material of the structure 22.
- the segment 12-16 is made to a large extent with a box-like structure 22 of composite material, at an intermediate position of which a metal insert or attachment 25 is drowned, with at least its base, with fins 26 for assembling the movement jack.
- the steel terminals 23 are provided, suitable for connection to the segments immediately adjacent, which are connected to the structure of composite material 22 by means of suitable joining lengths made of steel-carbon fiber 28.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Lining And Supports For Tunnels (AREA)
- Forging (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Gripping On Spindles (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Claims (13)
- Flèche extensible (10) pour la distribution de béton, pouvant être installée sur un véhicule de chantier (11) et comprenant une pluralité de segments articulés (12-16) pivotant entre eux par leurs extrémités respectives, dans laquelle l'un au moins des segments (12-16), ou au moins l'une de ses parties en longueur formant la flèche extensible (10) est entièrement fabriqué, sur toute sa section, en matériau composite définissant une structure caissonnée (22), et caractérisée en ce qu'elle comprend, au moins au niveau d'une position particulière en longueur, au moins un insert métallique (25, 30, 31, 34) noyé dans le matériau composite, destiné à raccorder au segment (12-16) au moins un équipement particulier choisi entre un vérin de déplacement, un segment adjacent ou un équipement auxiliaire.
- Flèche extensible (10) selon la revendication 1, caractérisée en ce que le matériau composite utilisé est choisi parmi la fibre de carbone, la fibre aramide ou toute autre fibre analogue ou comparable.
- Flèche extensible (10) selon la revendication 1, caractérisée en ce que le matériau composite utilisé comprend des fibres unidirectionnelles ou entrecroisées/entrelacées.
- Flèche extensible (10) selon la revendication 1, caractérisée en ce que le matériau composite utilisé est du type multicouche.
- Flèche extensible (10) selon la revendication 1, caractérisée en ce que ladite structure caissonnée (22) présente une section ovale, ou bien rectangulaire à bords arrondis.
- Flèche extensible (10) selon la revendication 1, caractérisée en ce que ledit segment de matériau composite (12-16) comprend en outre des inserts métalliques longitudinaux et/ou transversaux (25) de renfort.
- Flèche extensible (10) selon la revendication 1, caractérisée en ce que lesdits inserts métalliques (25) sont constitués de tôles minces, plaques (30), barres ou treillis (31), douilles ou bagues (34).
- Flèche extensible (10) selon la revendication 1, caractérisée en ce que lesdits inserts métalliques (25) comprennent des trous (29) destinés à introduire des éléments fibreux (32) pour consolider l'ancrage.
- Flèche extensible (10) selon la revendication 1, caractérisée en ce que la fixation (26) destinée à un vérin de déplacement est en matériau composite.
- Flèche extensible (10) selon la revendication 1, caractérisée en ce que la fixation métallique (26) destinée à un vérin de déplacement est collée intérieurement ou extérieurement à la structure en matériau composite (22).
- Flèche extensible (10) selon la revendication 1, caractérisée en ce que l'une au moins des deux extrémités (23) dudit segment (12-16) est destinée à se raccorder à un segment adjacent (12-16) en métal.
- Flèche extensible (10) selon la revendication 11, caractérisée en ce que ladite extrémité de raccordement (23) comprend des brides d'ancrage.
- Procédé de fabrication d'une flèche extensible (10) pour la distribution de béton selon la revendication 1, pouvant être installée sur un véhicule de chantier (11) et comprenant une pluralité de segments articulés (12-16), articulés entre eux par leurs extrémités respectives, caractérisé en ce qu'il prévoit que l'un au moins des segments (12-16), ou au moins l'une de ses parties en longueur formant la flèche extensible (10) est entièrement fabriqué, sur toute sa section, en matériau composite au moyen de l'une ou l'autre des techniques d'enroulement filamentaire, de dépôt manuel de préimprégné avec polymérisation en autoclave, ou de pultrusion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08152672T PL1970344T3 (pl) | 2007-03-16 | 2008-03-13 | Wysięgnik do rozprowadzania betonu do pojazdów roboczych i sposób jego wytwarzania |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000056A ITUD20070056A1 (it) | 2007-03-16 | 2007-03-16 | Braccio di distribuzione di calcestruzzo per veicoli da lavoro e relativo procedimento di fabbricazione |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1970344A1 EP1970344A1 (fr) | 2008-09-17 |
EP1970344B1 true EP1970344B1 (fr) | 2010-08-11 |
Family
ID=38596384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08152672A Revoked EP1970344B1 (fr) | 2007-03-16 | 2008-03-13 | Flèche pour la distribution de béton pour véhicules de chantier et procédé de fabrication correspondant |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1970344B1 (fr) |
AT (1) | ATE477209T1 (fr) |
DE (1) | DE602008002081D1 (fr) |
DK (1) | DK1970344T3 (fr) |
ES (1) | ES2349350T3 (fr) |
IT (1) | ITUD20070056A1 (fr) |
PL (1) | PL1970344T3 (fr) |
PT (1) | PT1970344E (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012114190A1 (fr) | 2011-02-23 | 2012-08-30 | Cifa Spa | Procédé de fabrication de bras dans un matériau composite pour la distribution de béton et bras ainsi obtenu |
WO2012156808A1 (fr) | 2011-05-17 | 2012-11-22 | Cifa Spa | Bras télescopique composite pour grue pourvu d'extrémités métalliques sur des segments tubulaires et grue comprenant ledit bras |
WO2012156807A1 (fr) | 2011-05-17 | 2012-11-22 | Cifa Spa | Bras télescopique pour grues et grue pourvue d'un bras de ce type |
WO2013050838A1 (fr) | 2011-05-17 | 2013-04-11 | Cifa Spa | Bras télescopique composite pour grues pourvu de blocs de guidage métalliques et grue comprenant ledit bras |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008013203A1 (de) * | 2008-03-08 | 2009-09-17 | Terex-Demag Gmbh | Ausleger zur endseitigen Aufnahme von Lasten, Ausleger-Baugruppe mit mindestens zwei derartigen Auslegern sowie Verfahren zur Herstellung eines derartigen Auslegers |
IT1394350B1 (it) * | 2009-05-06 | 2012-06-06 | Milano Politecnico | Braccio in materiale composito e relativo procedimento di realizzazione |
IT1398899B1 (it) * | 2010-03-12 | 2013-03-21 | Cifa Spa | Braccio di distribuzione di calcestruzzo e relativo procedimento di realizzazione |
DE102010013328A1 (de) * | 2010-03-30 | 2011-10-06 | Liebherr-Werk Nenzing Gmbh | Rückfallstütze |
CN102383603B (zh) * | 2011-08-19 | 2014-01-15 | 三一汽车制造有限公司 | 混凝土泵车及其臂架装置 |
CN102767380B (zh) * | 2012-08-08 | 2016-02-24 | 中联重科股份有限公司 | 混凝土喷射机的箱形臂节、箱形臂架和混凝土喷射机 |
CN114517579A (zh) * | 2020-11-20 | 2022-05-20 | 三一汽车制造有限公司 | 臂架装置及作业车辆 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3947191A (en) | 1974-06-25 | 1976-03-30 | Milner Jr Edwin Earl | Lightweight high strength boom construction |
DE19829829A1 (de) | 1998-07-03 | 2000-01-13 | Grove Us Llc Shady Grove | Verbundwerkstoff-Teleskopteil und -ausleger |
JP4553454B2 (ja) * | 2000-07-28 | 2010-09-29 | 株式会社アイチコーポレーション | 高所作業車のブーム構造 |
US6786233B1 (en) * | 2001-02-23 | 2004-09-07 | Schwing America, Inc. | Boom utilizing composite material construction |
GB2387374B (en) * | 2002-04-12 | 2005-03-02 | Bamford Excavators Ltd | Detecting damage to a structural member |
-
2007
- 2007-03-16 IT IT000056A patent/ITUD20070056A1/it unknown
-
2008
- 2008-03-13 AT AT08152672T patent/ATE477209T1/de active
- 2008-03-13 PT PT08152672T patent/PT1970344E/pt unknown
- 2008-03-13 DE DE602008002081T patent/DE602008002081D1/de active Active
- 2008-03-13 PL PL08152672T patent/PL1970344T3/pl unknown
- 2008-03-13 ES ES08152672T patent/ES2349350T3/es active Active
- 2008-03-13 EP EP08152672A patent/EP1970344B1/fr not_active Revoked
- 2008-03-13 DK DK08152672.5T patent/DK1970344T3/da active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012114190A1 (fr) | 2011-02-23 | 2012-08-30 | Cifa Spa | Procédé de fabrication de bras dans un matériau composite pour la distribution de béton et bras ainsi obtenu |
WO2012156808A1 (fr) | 2011-05-17 | 2012-11-22 | Cifa Spa | Bras télescopique composite pour grue pourvu d'extrémités métalliques sur des segments tubulaires et grue comprenant ledit bras |
WO2012156807A1 (fr) | 2011-05-17 | 2012-11-22 | Cifa Spa | Bras télescopique pour grues et grue pourvue d'un bras de ce type |
WO2013050838A1 (fr) | 2011-05-17 | 2013-04-11 | Cifa Spa | Bras télescopique composite pour grues pourvu de blocs de guidage métalliques et grue comprenant ledit bras |
Also Published As
Publication number | Publication date |
---|---|
DE602008002081D1 (de) | 2010-09-23 |
ITUD20070056A1 (it) | 2008-09-17 |
DK1970344T3 (da) | 2010-11-29 |
PL1970344T3 (pl) | 2011-02-28 |
PT1970344E (pt) | 2010-11-11 |
ES2349350T3 (es) | 2010-12-30 |
ATE477209T1 (de) | 2010-08-15 |
EP1970344A1 (fr) | 2008-09-17 |
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