EP3184479A1 - Élément modulaire en forme de treillis avec assemblage simplifié pour tour des grues à tour et tour comprenant un tel élément modulaire - Google Patents

Élément modulaire en forme de treillis avec assemblage simplifié pour tour des grues à tour et tour comprenant un tel élément modulaire Download PDF

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Publication number
EP3184479A1
EP3184479A1 EP16205957.0A EP16205957A EP3184479A1 EP 3184479 A1 EP3184479 A1 EP 3184479A1 EP 16205957 A EP16205957 A EP 16205957A EP 3184479 A1 EP3184479 A1 EP 3184479A1
Authority
EP
European Patent Office
Prior art keywords
trellis
modular element
simplified assembly
screw
modular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16205957.0A
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German (de)
English (en)
Inventor
Giovanni PAGANINI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gp Autolift Srl
Original Assignee
Gp Autolift Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gp Autolift Srl filed Critical Gp Autolift Srl
Publication of EP3184479A1 publication Critical patent/EP3184479A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • B66C23/28—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 constructed to operate at successively higher levels
    • B66C23/283—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 constructed to operate at successively higher levels with frameworks composed of assembled elements
    • B66C23/286—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 constructed to operate at successively higher levels with frameworks composed of assembled elements with locking devices

Definitions

  • the present invention refers to a simplified assembly trellis-like modular element for towers of tower cranes and to a tower comprising at least one of such elements.
  • tower cranes are lifting apparatuses of the arm type comprising a tower at the top of which a rotary assembly can be mounted, constrained on one side to a lifting arm or jib and on the other side to a counter-arm or counter-jib.
  • cranes are provided with a complex system of motorized members and cables for lifting, lowering and moving suspended loads.
  • Tower cranes can, in general, be installed in a fixed position or equipped with sliding and/or lifting means.
  • the tower is constrained to a base structure that can consist of a block or a plurality of foundation legs, generally four, or a fixed or translating base.
  • the tower in particular, generally comprises a plurality of modular elements, generally of the trellis type, connected in succession one on top of the other.
  • Trellis-like modular elements comprise, as known, a plurality of posts extending longitudinally connected to one another by a trellis structure; these modular elements can be connected to one another one on top of the other through fixing means adapted for constraining the posts of the respective modular elements to one another.
  • Such fixing means are known to be bolts or pins.
  • horizontal, or more generally transversal, bolting operations are known, in which the screws of the bolts are transversal to the longitudinal extension of the posts and vertical bolting operations are known in which the screws of the bolts are parallel to the longitudinal extension of the posts.
  • each post is provided with one or more guide bushes for the screws, so that, when two modular elements are arranged on top of one another, the bushes of the respective posts are in corresponding position and make a receiving channel with longitudinal extension for the fixing screws.
  • such screws are then tightened with the respective nuts through torque wrenches with predetermined tightening torque based on safety specifications.
  • the vertical bolting operation is very complex and intricate, since it needs at least two operators, in particular one to hold the fixing screw in position while the other tightens the screw with the respective nut.
  • the purpose of the present invention is to avoid the aforementioned drawbacks and in particular to devise a trellis-like modular element for towers of tower cranes that makes the mounting of a tower simpler than what is provided for by the state of the art.
  • Another purpose of the present invention is to provide a tower for tower cranes that is quick and simple to be mounted.
  • the tower 10 can be constrained to a base structure that can consist of a block or a plurality of foundation legs or a fixed or translating base.
  • the tower 10 comprises a plurality of trellis-like modular elements 30 connected to one another in succession where each trellis-like modular element 30 comprises a plurality of posts 31 for supporting a trellis structure.
  • Each post 31 of a trellis-like modular element 30 extends lengthwise along a longitudinal axis A and has a first end 32 and a second end 33 each of which is arranged to be connected through fixing means with a corresponding end of another trellis-like modular element 30.
  • At least one from the plurality of trellis-like modular elements 30 is a simplified assembly trellis-like modular element 30.
  • each post 31 of the simplified assembly trellis-like modular element 30 comprises, at the first end 32, at least one connection assembly 40 arranged to at least partially house at least one screw 34 of a bolt 34, 35 adapted to connect the simplified assembly trellis-like modular element 30 to another trellis-like modular element 30, as well as to guide and support the screw 34 during assembly.
  • At least one of the posts 31 comprises two connection assemblies 40 coupled on two opposite sides of the at least one of said posts 31, as for example come illustrated in the attached figures.
  • Each post 31 also comprises, at the second end 33, at least one seat 54 for receiving and tightening the bolt 34, 35.
  • the at least one connection assembly 40 comprises a housing and guiding seat 41 adapted to at least partially house the screw 34.
  • Such a housing and guiding seat 41 has, in particular, two guiding portions 42 facing one another that define a housing space between them for the screw 34 and a tightening end portion 43 connected to the two guiding portions and transverse with respect to the longitudinal axis A of the post 31.
  • the tightening end portion 43 has at least one opening 36 adapted for being crossed by the screw 34 and allowing the tightening of the screw 34 itself with a nut 35 and possibly a washer 53.
  • the housing and guiding seat 41 has a substantially open prismatic or cylindrical configuration to allow access to the housing space.
  • the housing and guiding seat 41 in particular, extends lengthwise parallel to the longitudinal axis of the post 31 and ends on one side, preferably, substantially at the first end of the post 31 with the tightening end portion 43.
  • the housing and guiding seat 41 is provided within the housing space with a first abutment element 44 for the head of the screw 34 coupled with the two guiding portions 42 at a first end-stroke position on the opposite side to the tightening end portion 43.
  • the first end-stroke position is defined by the axis of at least a first pair of opposed through-seats 45 made on the two guiding portions 42 and the first abutment element 44 is made by at least one first pin 44 adapted to be removably engaged in the first pair of opposed through-seats 45 so as to cross the housing space defined between the guiding portions 42, therefore providing the first end-stroke for the head of the screw 34.
  • an elastic cotter pin can be provided associated with the first pin 44.
  • the first abutment element 44 can be made in the form of a plate welded to the guiding portions 42 transversally to the longitudinal axis A of the post 31.
  • the housing and guiding seat 41 is also provided within the housing space with a second abutment element 46 for the head of the screw 34 which can be selectively and removably coupled with the two guiding portions 42 at a second end-stroke position arranged between the first end-stroke position and the tightening end portion 43.
  • the second abutment element 46 is coupled with the guiding portions 42 at the second end-stroke position when the screw 34 is made to slide from the first end-stroke position towards the tightening end portion 43 passing beyond the second end-stroke position.
  • the second end-stroke position is defined by the axis of at least a second pair of opposed through-seats 47 made on the two guiding portions 42 and the second abutment element 46 is made as at least a second pin 46 adapted to be engaged in the second pair of opposed through-seats 47 so as to cross the housing space defined between the guiding portions 42, therefore providing the second end-stroke for the screw 34.
  • an elastic cotter pin can preferably be provided associated with the second pin 46.
  • the housing and guiding seat 41 is also provided within the housing space with a third abutment element 48 for the head of the screw 34 which can be selectively and removably coupled with the two guiding portions 42 at a blocking position arranged between the first and the second end-stroke position.
  • the blocking position is defined by the axis of at least a third pair of opposed through-seats 49 made on the two guiding portions 42 and the third abutment element 48 is made as at least a third pin 48 adapted to be removably engaged in the third pair of opposed through-seats 49 so as to cross the housing space defined between the guiding portions 42, therefore providing a blocking abutment for the head of the screw 34 when the latter is in the first end-stroke position.
  • an elastic cotter pin can preferably be provided associated with the third pin 48.
  • the simplified assembly trellis-like modular element can be transported to the worksite easily and safely together with the bolts 34, 35 necessary for the connection with another trellis-like modular element.
  • the simplified assembly trellis-like modular element assumes a compact transportation configuration; in such a transportation configuration the screws 34 cannot slide and thus come out from the respective seats ensuring safety in transportation.
  • the second pin 46 coincides with the third pin 48.
  • the screw 34 is made to slide beyond the second end-stroke position and the second pin 46 is engaged in the third pair of through-seats 49.
  • the tightening end portion 43 is made as a perforated block 43 that projects inside the housing and guiding seat 41 until it substantially reaches the second end-stroke position.
  • a perforated block 43 preferably, has a head portion 50 shaped so as to define a receiving seat 51 for the head of the screw 34.
  • the two guiding portions 42 have within the housing space two abutment tooth-like portions 52 facing one another so as to define a narrowing in order to limit the undesired lateral movement of the head of the screw 34.
  • such two abutment tooth-like portions 52 are arranged between the first end-stroke position and the blocking position. In this way, the risk of undesired torsions that could damage the screws 34 is avoided.
  • connection procedure of the simplified assembly trellis-like modular element 30 with another trellis-like modular element will be described hereinafter with reference, as a non-limiting example, to the embodiment illustrated in figures 6a-6e .
  • the same alphanumeric references are associated with the elements of the second simplified assembly trellis-like modular element 30' of the first modular element 30 to which a superscript is added.
  • the nuts 35 are unscrewed from the respective screws 34 together, where present, with the washers 53 as for example illustrated in figures 6a and 6b ; the third pins 48 are also extracted from the third opposed through-seats 49.
  • the first simplified assembly trellis-like modular element 30 is oriented with the posts 31 transversal to the ground and the screws 34 in the second end-stroke position that point upwards as illustrated in figure 6c .
  • the second simplified assembly trellis-like modular element 30' is hoisted with the second ends 33 of the posts 31' facing towards the first ends 32 of the posts 31 of the first simplified assembly trellis-like modular element 30.
  • the second simplified assembly modular element 30' is then lowered so that the screws 34 pass through the receiving and tightening seats 54' associated with the second ends 33'; the screws 34 are therefore tightened with the nuts 35 and the possible washers 54 with a torque wrench making the stable coupling between the modular elements.
  • this tightening step of the screws 34 can, advantageously, be carried out by a single operator in total safety since the screws 34 are kept in position by the second abutment elements 46 that in the case illustrated correspond to the third pins 48 engaged in the second opposed through-seats 47.
  • Such a solution also makes the positioning of the second trellis-like modular element 30' on the first trellis-like modular element 30 easy since the screws 34 act as centering means for the second trellis-like modular element 30'.
  • connection assemblies of the simplified assembly trellis-like modular element allow not only to house and thus also to transport the bolts in a safe and easy manner, but also to simplify the connection with another trellis-like modular element.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP16205957.0A 2015-12-22 2016-12-21 Élément modulaire en forme de treillis avec assemblage simplifié pour tour des grues à tour et tour comprenant un tel élément modulaire Withdrawn EP3184479A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUB2015A009180A ITUB20159180A1 (it) 2015-12-22 2015-12-22 Elemento modulare a traliccio a montaggio semplificato per torri di gru a torre e torre comprendente tale elemento modulare.

Publications (1)

Publication Number Publication Date
EP3184479A1 true EP3184479A1 (fr) 2017-06-28

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EP16205957.0A Withdrawn EP3184479A1 (fr) 2015-12-22 2016-12-21 Élément modulaire en forme de treillis avec assemblage simplifié pour tour des grues à tour et tour comprenant un tel élément modulaire

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EP (1) EP3184479A1 (fr)
IT (1) ITUB20159180A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900006316A1 (it) * 2019-04-24 2020-10-24 Terri S R L Elemento di struttura a traliccio in particolare per gru a torre e relativo giunto
EP4335806A1 (fr) * 2022-09-08 2024-03-13 Linden Comansa, S.L. Joint de fixation pour couplage entre des modules structurels de grues à tour
EP3517794B1 (fr) * 2018-01-30 2024-09-18 Manitowoc Crane Group France SAS Système de montage pour une grue, grue avec un tel système de montage et procédé d'exécution d'un montage sur une telle grue

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1250050A (fr) * 1959-12-12 1961-03-24 Système de liaison rapide pour éléments de charpentes métalliques ou particulièrement grues
US3499258A (en) * 1966-11-08 1970-03-10 Richier Sa Assembled steel structure sections
FR2031876A5 (fr) * 1969-02-07 1970-11-20 Potain Sa
US3877192A (en) * 1972-05-16 1975-04-15 Richier Sa Assemblage of pieces of a metal frame
EP1873113A1 (fr) * 2006-06-28 2008-01-02 Manitowoc Crane Group France Dispositif d'assemblage démontable pour éléments de mât d'une grue à tour

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1250050A (fr) * 1959-12-12 1961-03-24 Système de liaison rapide pour éléments de charpentes métalliques ou particulièrement grues
US3499258A (en) * 1966-11-08 1970-03-10 Richier Sa Assembled steel structure sections
FR2031876A5 (fr) * 1969-02-07 1970-11-20 Potain Sa
US3877192A (en) * 1972-05-16 1975-04-15 Richier Sa Assemblage of pieces of a metal frame
EP1873113A1 (fr) * 2006-06-28 2008-01-02 Manitowoc Crane Group France Dispositif d'assemblage démontable pour éléments de mât d'une grue à tour

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3517794B1 (fr) * 2018-01-30 2024-09-18 Manitowoc Crane Group France SAS Système de montage pour une grue, grue avec un tel système de montage et procédé d'exécution d'un montage sur une telle grue
IT201900006316A1 (it) * 2019-04-24 2020-10-24 Terri S R L Elemento di struttura a traliccio in particolare per gru a torre e relativo giunto
EP4335806A1 (fr) * 2022-09-08 2024-03-13 Linden Comansa, S.L. Joint de fixation pour couplage entre des modules structurels de grues à tour

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