EP1349684B1 - Device to complete reinforcement cages and relative method - Google Patents

Device to complete reinforcement cages and relative method Download PDF

Info

Publication number
EP1349684B1
EP1349684B1 EP01999447A EP01999447A EP1349684B1 EP 1349684 B1 EP1349684 B1 EP 1349684B1 EP 01999447 A EP01999447 A EP 01999447A EP 01999447 A EP01999447 A EP 01999447A EP 1349684 B1 EP1349684 B1 EP 1349684B1
Authority
EP
European Patent Office
Prior art keywords
cage
supporting plane
stirrups
plane
rods
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
EP01999447A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1349684A1 (en
Inventor
Giorgio Del Fabro
Marcello Del Fabro
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.)
MEP Macchine Elettroniche Piegatrici SpA
Original Assignee
MEP Macchine Elettroniche Piegatrici SpA
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 MEP Macchine Elettroniche Piegatrici SpA filed Critical MEP Macchine Elettroniche Piegatrici SpA
Publication of EP1349684A1 publication Critical patent/EP1349684A1/en
Application granted granted Critical
Publication of EP1349684B1 publication Critical patent/EP1349684B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F27/00—Making wire network, i.e. wire nets
    • B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
    • B21F27/121—Making special types or portions of network by methods or means specially adapted therefor of tubular form, e.g. as reinforcements for pipes or pillars
    • B21F27/125—Making special types or portions of network by methods or means specially adapted therefor of tubular form, e.g. as reinforcements for pipes or pillars by attaching individual stirrups to longitudinal wires

Definitions

  • the invention concerns a device and a method to complete reinforcement cages made with round pieces or metal profiles in general, used in reinforced concrete structures such as beams, pillars or foundations.
  • the invention is used to insert a desired number of longitudinal completion rods inside the perimeter of the stirrups of a pre-cage during the step when the pre-cage itself is made.
  • pre-cage indicates a partly assembled cage, both as a structure formed by stirrups and a desired number of longitudinal rods according to the design project, and also as a structure formed by stirrups and auxiliary rods with the function of maintaining the stirrups joined together during the pre-assembly step.
  • Metal cages used for reinforcement purposes in reinforced concrete structures comprise a plurality of longitudinal rods to which stirrups are associated, separated lengthwise at intervals.
  • the cages can be assembled manually or automatically, by means of suitable machines known as cage-forming machines, which allow to make good quality cages with less workforce required (see for example EP-A-0 791 416).
  • the cages are assembled in two successive steps: firstly, a substantially standardized pre-cage is prepared by attaching auxiliary longitudinal profiles to the stirrups, the function of which is to keep the stirrups joined together; subsequently the cage is completed with the longitudinal rods according to the design project, mostly attached inside the perimeter of the stirrups.
  • the purpose of the invention is to achieve a device and a method suitable to automate the operation of inserting a desired number of longitudinal rods inside the perimeter of the stirrups of a pre-cage while the latter is being formed, without risks of deformation or damage to the components of the cage.
  • Another purpose is to achieve a device suitable to facilitate the discharge of the finished pre-cage, with the longitudinal rods located inside the perimeter of the stirrups.
  • the device according to the invention comprises at least a supporting plane, arranged downstream of a cage-forming machine and on which the pre-cage is able to advance while it is progressively formed; the longitudinal rods to be inserted inside the perimeter of the stirrups are arranged on the supporting plane.
  • the supporting plane is able to move cyclically, in a longitudinal direction and in a manner mating with the advance movement of the pre-cage being formed and for a travel substantially mating with the interaxis (step) of the relative stirrups.
  • the longitudinal position of the abutment element is advantageously adjustable according to the length of the rods.
  • the device according to the invention also comprises lifting means, arranged substantially transverse and at intervals along the supporting plane, able to keep the longitudinal rods at least temporarily raised to allow them to be inserted inside the perimeter of the stirrups.
  • the lifting means are able to assume at least a first position, wherein they are arranged below the surface of the supporting plane, and a second position wherein they are raised with respect to the surface for a value at least such as to allow the rods resting on them to pass over the lower side of the stirrups.
  • the lifting means consist of oscillating arms.
  • the lifting means consist of arms movable vertically.
  • the device according to the invention comprises a command and control unit able to govern the cycle of moving the supporting plane and the lifting means, according to the work cycle of the cage-forming machine to which the device is associated.
  • the longitudinal completion rods are arranged on the supporting plane and then the pre-cage is begun.
  • the lifting means are active, that is to say, raised, so that the longitudinal rods, which are held stationary with respect to the plane by the abutment element, are progressively inserted into the perimeter of the stirrups;
  • the lifting means are de-activated, that is, lowered, so that the plane can return to the original position without interference between the lifting means and the stirrups, with the rods resting on the lower side of the perimeter of the stirrups.
  • the oscillating lifting arms are used, they are activated, when the pre-cage is complete, to overturn the pre-cage on one side to allow it to be discharged.
  • the plane advances slightly to free the rear end of the pre-cage from interference with the operating assemblies and with the structure of the cage-forming machine.
  • the number 10 denotes in its entirety a device able to insert longitudinal completion rods 13 inside the closed perimeter of stirrups 12 of a pre-cage 11.
  • the device 10 is arranged downstream of a cage-forming machine 15 able to produce pre-cages 11 consisting, in the embodiment shown here, of two auxiliary profiles 14 and a plurality of stirrups 12; in this case, the auxiliary profiles 14 are shaped like a loop in correspondence with the points where they are attached to the stirrups 12 and are associated outside with the latter.
  • the cage-forming machine 15 comprises a frame 22 on which, for each of the auxiliary profiles 14, a drawing assembly 16, a first 17 and second straightening assembly 18, a shaping assembly and a welding assembly 20 are assembled.
  • Every drawing assembly 16 is able to make a relative auxiliary profile 14 advance, possibly unwinding it from a reel located upstream of the cage-forming machine 15; the straightening assemblies 17 and 18 serve to straighten the profile 14 respectively on the horizontal plane and on the vertical plane, the shaping assembly 19 is able to achieve relative loops along the profile 14 and finally the welding assembly 20 is able to attach the auxiliary profile 14 to the stirrups 12 which are located one after the other in the attachment position.
  • the welding assembly 20 can include retaining means able to keep the stirrups 12 in position during the attachment operations.
  • the cage-forming machine 15 also comprises tubular guide elements 21 inside which the auxiliary rods 13 are able to slide.
  • the assemblies 16-20 acting on an auxiliary rod 14 are assembled on a slider 23 able to move with respect to the frame 22, so as to adjust the position thereof with respect to the assemblies 16-20 acting on the other auxiliary profile 14.
  • the device 10 comprises a supporting plane 24 extending lengthwise as an extension of the cage-forming machine 15; the pre-cage 11 as it progressively forms is able to advance thereon.
  • the longitudinal completion rods 13 to be inserted inside the perimeter of the stirrups 12 are also able to be arranged on the supporting plane 24.
  • the supporting plane 24 is made of several elements 24b and is assembled on a relative frame 26, together with which it can move lengthwise with respect to two bases 25 resting on the floor; one of them is visible in Figs. 2, 3 and 4.
  • the frame 26 comprises two longitudinal profiles 26a, extending lengthwise substantially for as long as the plane 24; wheels 30 able to slide inside guides 31 solidly associated with the bases 25 are assembled on said profiles 26a.
  • the frame 26, and hence the supporting plane 24, is moved by a motor reducer unit 27 assembled on one of the bases 25; the motor reducer unit 27 is able to make rotate, selectively in both directions, a pinion 28 engaged on a rack 29 associated with a longitudinal profile 26a of the frame 26, causing the supporting plane 24 to move forwards or backwards with respect to the cage-forming machine 15.
  • the supporting plane 24 can move from a first retracted position, wherein it is closer to the cage-forming machine 15, to a second advanced position; the travel of the supporting plane 24 is advantageously equal to the interaxis "i" between the stirrups 12 of the forming pre-cage 11.
  • the device 10 also comprises a command and control unit of the programmable type, not shown here, able to govern the cycle of the motor reducer unit 27 to define the travel "c" according to the work cycle of the cage-forming machine 15.
  • the arms 32 are housed in corresponding slits 33 made between the elements 24b of the supporting plane 24; the arms 32 are able to assume at least a first lowered position "I", wherein they are arranged below the upper surface 24a of the supporting plane 24, and a second raised position "II", wherein they are arranged substantially horizontal.
  • the upper edge 32a of the arms 32 is located at a height "h" from the surface 24a of the plane 24 which is greater than the diameter of the stirrups 12, so as to allow the progressive insertion of the rods 13 into the perimeter of the stirrups 12 without knocking or getting stuck.
  • the arms 32 are arranged in positions such that they never interfere with the stirrups 12 of the forming pre-cage 11; in a preferential embodiment, the distance "d" between the arms 32 is an integral multiple of the interaxis "i" between the stirrups 12.
  • the first arm 32 that is, the one nearest the cage-forming machine 15 is located at a distance "e" from the vertical plane "Y" on which the stirrups 12 are attached, equal to the sum of the interaxis "i" and an additional offset value "x".
  • the arms 32 are associated with a longitudinal bar 34 arranged next to the supporting plane 24 and able to be made to rotate, when so commanded by the command and control unit, by actuators 35 associated with the frame 26.
  • the actuators 35 have their stems 35a pivoting on relative levers 36 solid with the longitudinal bar 34; by activating the actuators 35 the longitudinal bar 34 is made to rotate causing the arms 32 to oscillate between the first position "I" and the second position "II".
  • the arms 32 can assume a third position "III", raised and inclined with respect to the supporting plane 24, which is assumed in order to laterally discharge the finished pre-cage 11, with the rods 13 inside it.
  • the arms 32 are attached to a connection beam 38, with which the stems 37a of vertical axis actuators 37 are associated at the lower part; by activating the actuators 37, the arms 32 are able to be arranged either in the first position "I” or in the second position "II", remaining substantially horizontal.
  • abutment element 39 In cooperation with the supporting plane 24, in a substantially terminal position thereof, there is a fixed abutment element 39, against which the front ends of the longitudinal rods 13 are arranged; the position of the abutment element 39 is advantageously adjustable according to the length of the longitudinal rods 13 to be used.
  • the device 10 functions as follows. First, the longitudinal rods 13 are arranged on the supporting plane 24, then on the arms 32 too, adjusting the position of the element 39 so that it serves as an abutment for the ends of the rods 13.
  • the supporting plane 24 is in its first retracted position "A", while the cage-forming machine 15 attaches a first stirrup 12 to the auxiliary profiles 14 (Fig. 5a).
  • the pre-cage 11 advances by one step equal to the interaxis "i” and simultaneously the supporting plane 24 moves into its second, advanced position "B” with the arms 32 in the second raised position "II” (Fig. 5b). Since the rods 13 are held stationary by the abutment element 39, the advance of the plane 24 causes the rods 13 to be progressively inserted into the perimeter of the first stirrup 12.
  • the supporting plane 24 retreats until it returns to its first position "A", as the pre-cage 11 is stationary because it is held by the assembly 16; in this condition, the arms 32 are lowered into the low position "I", so that they can slide below the lower side of the stirrup 12 (Fig. 5c).
  • the cage-forming machine 15 then provides to make the pre-cage 11 advance again, and the supporting plane 24, on which the first stirrup 12 is also resting, moves in mating manner, moving to the advanced position "B", while the arms 32 are again raised to their second position "II” to continue the insertion of the rods 13 into the second stirrup 12 too (Fig. 5d).
  • the cage to be made can be completed by welding the longitudinal rods 13 to the pre-cage 11, without needing complex and difficult operations of inserting the longitudinal rods 13. This operation can be made directly on the supporting plane 24 or in another suitable site.
  • the finished cage or pre-cage 11 with the longitudinal rods 13 inserted can be laterally discharged by first making the plane 24 advance slightly to free the pre-cage 11 from interference with the operating assemblies of the cage-forming machine 15, and then moving the arms 32 to their third position "III".
  • the means to move the supporting plane 24 and the arms 32 can be of a different type from that shown here.
  • the supporting plane 24 can extend as far as in correspondence with the vertical plane "Y" where the stirrups 12 are attached.
  • the supporting plane 24 can also rest directly on the floor, and be equipped with wheels, pads or similar, without requiring the base 25 and the movement system shown above.
  • the abutment element 39 can be associated with its own movement means on the ground, and possibly be shaped to cooperate with rods 13 of a particular section, other than round.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
EP01999447A 2000-12-05 2001-12-04 Device to complete reinforcement cages and relative method Expired - Lifetime EP1349684B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT2000UD000218A IT1315154B1 (it) 2000-12-05 2000-12-05 Dispositivo per il completamento di gabbie di armatura e relativoprocedimento.
ITUD20000218 2000-12-05
PCT/IB2001/002287 WO2002045883A1 (en) 2000-12-05 2001-12-04 Device to complete reinforcement cages and relative method

Publications (2)

Publication Number Publication Date
EP1349684A1 EP1349684A1 (en) 2003-10-08
EP1349684B1 true EP1349684B1 (en) 2005-10-12

Family

ID=11460440

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01999447A Expired - Lifetime EP1349684B1 (en) 2000-12-05 2001-12-04 Device to complete reinforcement cages and relative method

Country Status (10)

Country Link
EP (1) EP1349684B1 (da)
JP (1) JP2004515360A (da)
AT (1) ATE306338T1 (da)
AU (1) AU2002220951A1 (da)
BR (1) BR0108095A (da)
DE (1) DE60114045T2 (da)
DK (1) DK1349684T3 (da)
ES (1) ES2251531T3 (da)
IT (1) IT1315154B1 (da)
WO (1) WO2002045883A1 (da)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1030601C2 (nl) * 2005-12-06 2007-06-07 Steven Edward Kelly Hulpmiddel en werkwijze voor het vervaardigen van een wapening.
ITUD20060073A1 (it) * 2006-03-22 2007-09-23 Awm Spa "gruppo automatico di piegatura ed inserimento barre di rinforzo nelle gabbie metalliche di armatura gia' preformate"
CN102303081B (zh) * 2011-09-22 2013-09-25 建科机械（天津）股份有限公司 钢筋笼成型机的移动转盘移动离合机构
CN103909338A (zh) * 2014-04-03 2014-07-09 建科机械（天津）股份有限公司 钢筋笼滚焊机的新型托笼装置
CN111992969B (zh) * 2020-07-30 2021-12-21 广东华亮建设有限公司 一种用于圆柱形钢筋笼焊接加工的滚动装置
CN113481865B (zh) * 2021-07-26 2024-07-19 湖南五新智能科技股份有限公司 一种钢筋笼绑扎流水线施工方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1273800B (it) * 1994-02-10 1997-07-10 Schnell Srl Metodo e apparecchiatura per realizzare gabbie metalliche per cemento armato e gabbia metallica cosi' ottenuta
IT1288852B1 (it) * 1996-02-22 1998-09-25 Piegatrici Macch Elettr Procedimento per la realizzazione di gabbie metalliche per cemento armato e relativo dispositivo
DK1021259T3 (da) * 1997-10-06 2002-06-17 Piegatrici Macch Elettr Fremgangsmåde til dannelse af metalliske bure til armering og relativ anordning

Also Published As

Publication number Publication date
ES2251531T3 (es) 2006-05-01
IT1315154B1 (it) 2003-02-03
ITUD20000218A1 (it) 2002-06-05
DE60114045D1 (de) 2005-11-17
WO2002045883A1 (en) 2002-06-13
ATE306338T1 (de) 2005-10-15
JP2004515360A (ja) 2004-05-27
EP1349684A1 (en) 2003-10-08
DK1349684T3 (da) 2006-02-27
BR0108095A (pt) 2002-10-29
DE60114045T2 (de) 2006-06-29
AU2002220951A1 (en) 2002-06-18

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