WO2015150987A1 - Maillage constitué d'anneaux de fil métallique et procédé de fabrication d'un maillage constitué d'anneaux de fil métallique - Google Patents

Maillage constitué d'anneaux de fil métallique et procédé de fabrication d'un maillage constitué d'anneaux de fil métallique Download PDF

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Publication number
WO2015150987A1
WO2015150987A1 PCT/IB2015/052230 IB2015052230W WO2015150987A1 WO 2015150987 A1 WO2015150987 A1 WO 2015150987A1 IB 2015052230 W IB2015052230 W IB 2015052230W WO 2015150987 A1 WO2015150987 A1 WO 2015150987A1
Authority
WO
WIPO (PCT)
Prior art keywords
wire
strand
coils
winding
mesh
Prior art date
Application number
PCT/IB2015/052230
Other languages
English (en)
Inventor
Norma AGOSTINI
Original Assignee
Mgtec S.R.L.
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 Mgtec S.R.L. filed Critical Mgtec S.R.L.
Priority to ES15717647.0T priority Critical patent/ES2644019T3/es
Priority to EP15717647.0A priority patent/EP3126074B1/fr
Publication of WO2015150987A1 publication Critical patent/WO2015150987A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F31/00—Making meshed-ring network from wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
    • B21F15/02—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire
    • B21F15/04—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire without additional connecting elements or material, e.g. by twisting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F37/00—Manufacture of rings from wire
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
    • E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
    • E01F7/045—Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps

Definitions

  • This invention relates to a mesh made of wire rings and a method for making a mesh made of wire rings
  • the mesh according to the invention can advantageously be used as a rockfall barrier and/or as a covering of rock faces.
  • the object of the invention may be susceptible to a more general use.
  • Meshes made of wire rings are widely used for covering rock slopes to protect the underlying zones from falling masses, flows of detritus and avalanche phenomena.
  • These meshes generally consist of a repeated series of wire rings linked to each other, having a diameter normally greater than or equal to 25 cm (centimetres).
  • each wire ring is made in the form of a strand with a multi-wire spheroidal cross section, and is obtained by winding and twisting on itself a steel wire along a substantially circular path.
  • the wire is closed by splicing at the relative twisting start and finish ends, that is to say, at its two ends.
  • the splicing technique even though it is excellent from the point of view of strength, can in no way be automated. In effect, this technique requires a manual processing and an extremely high precision in defining the length of the wire. In addition, if the diameter of the wire is equal to 2 mm the ends of the wire protrude from the strand with the possible injury of personnel involved in the installation of the mesh. In a second prior art technique, the ends of the wire with which the strand is obtained are clamped and kept in position by a metal clip.
  • the clip constitutes an additional element which is relatively expensive and, on the other hand, the size must be selected each time as a function of the quantity of wires twisted and the required strength.
  • the aim of this invention is to provide a mesh made of wire rings and a method for making a mesh made of wire rings which overcome the above- mentioned drawbacks.
  • the aim of this invention to provide a mesh made of wire rings and a method for making a mesh made of wire rings which are simple compared with the prior art whilst guaranteeing the closing seal of the ring.
  • the aim of this invention is to provide a mesh made of wire rings and a method for making a mesh made of wire rings which can be automated.
  • FIG. 1 illustrates a piece of a mesh made of wire rings made according to this invention
  • FIG. 2 to 5 illustrate in sequence respective stages for making a wire ring forming part of the mesh of Figure 1 ;
  • Figure 6 illustrates a detail of the finished wire ring, shown in Figure 5;
  • FIG. 8 illustrates a schematic front view of a machine for making and closing the strand according to this invention
  • the numeral 1 denotes in its entirety a mesh made of wire rings, which comprises a repeated series of rings 2 made of wire linked to each other. More precisely, the mesh 1 comprises a plurality of rings 2 of wire which are linked together, and, as shown more clearly in Figures 2 and 3, each ring 2 is defined by a strand formed by a steel wire 3 repeatedly wound and twisted on itself in the form of a spiral.
  • each ring 2 preferably has a diameter greater than or equal to 25 cm.
  • the wire 3 has a first end 4, which is not twisted in the making of the strand, and a second end 5 which is, on the other hand, repeatedly twisted in the form of a spiral in the making of the strand.
  • both the ends 4 and 5 are outside the strand ( Figure 4) and, according to a distinctive feature of the invention, are both wound in a helical fashion around the strand with the same direction of winding ( Figures 5 and 6).
  • the first end 4 is, in part, passing through the middle of the rest of the strand in such a way as to protrude outwardly relative to the strand.
  • the first end 4 of the wire 3 forms a first helical locking end comprising a plurality of first coils 6 clamped on the strand
  • the second end 5 of the wire 3 forms a second helical locking end comprising a plurality of second coils 7 clamped on the strand.
  • the first coils 6 and the second coils 7 are alternated with each other.
  • This feature makes the ring 2 able to withstand high tensile stresses and, at the same time, easy to make in a mechanised manner.
  • the coils of the two windings act in conjunction, blocking each other to make a considerable contribution to the overall resistance of the ring.
  • each ring 2 of wire In order to make each ring 2 of wire, the respective wire 3 is wound and twisted repeatedly on itself to form an annular strand from which protrude the two ends 4 and 5 of the wire 3.
  • the two ends 4, 5, at the end of this first step, may be in a divergent configuration away from the strand. This would normally be due to the fact that the rigidity of the wire tends to keep the ends 4, 5 protruding from the strand in a configuration tangential to the annular line of extension of the strand.
  • the two ends 4 and 5 of the wire 3 are then moved near to one another to define a U-shaped configuration.
  • This U-shaped configuration may extend in a radial or substantially radial direction relative to the centre of the annular line on which the ring extends, or it may be inclined relative to the radial direction and therefore be partly inclined or resting towards the strand ( Figures 4 and 7).
  • This positioning alongside each other may occur by bending only one of the two ends 4, 5 or both, in such a way that the two ends 4, 5 adopt both the desired reciprocal configuration (U-shaped) and the desired orientation relative to the strand.
  • This positioning alongside each other may bring the ends 4, 5 close to each other in such a way as to not superpose the ends 4, 5 at the base of them, that is to say, at the point where the ends 4, 5 protrude from the strand ( Figure 4), or in such a way as to form a superposing of the ends 4, 5 at the base ( Figure 7).
  • the ends 4, 5 are wound simultaneously and in a helical fashion around the strand in the same direction of winding.
  • the step of simultaneously winding the two ends 4 and 5 of the wire 3 therefore occurs by alternating between them the first coils 6 and the second coils 7.
  • the rotational motion with which the two ends 4 and 5 are simultaneously wound is performed preferably and advantageously by a single gripping means, preferably of the gripper type, which grips and moves simultaneously the two ends 4, 5.
  • the gripping means (not illustrated) are provided with an orbiting motion about the portion of strand on which the ends 4, 5 of the wire are bent.
  • the pickup means are automatic.
  • This invention also relates to a machine 100 for winding rings 2 of wire in such a way as to make a strand as described in the above-mentioned method which is herebelow incorporated in its entirety.
  • the machine 100 is illustrated in Figures 8 and 9 and comprises a base 101 for making the strand ( Figure 9). More in detail, the base 101 is used to support the strand being formed. Preferably, the base 101 has a horizontal extension.
  • the machine 100 comprises an unwinding roller 102 for the wire ( Figure 9) rotating around the base 101 according to an annular path for making the rings 2 of wire.
  • the machine 100 comprises an element 103 for supporting the unwinding roller 102 extending from a relative central portion 104 positioned at the central (and inner) zone relative to the strand to be formed to a respective lateral portion 105 located at an outer zone relative to the strand to be formed.
  • the unwinding roller 102 is connected to the supporting element 103 in such a way that the unwinding of the wire occurs around the base 101 .
  • the supporting element 103 has a "C" shape lying on a plane transversal (preferably orthogonal) to the base 101 ( Figure 8).
  • This shape "C” defines advantageously an opening 106 for extracting the strand formed.
  • the machine 100 comprises an automatic closing device 107 comprising means 108 for gripping the ends 4, 5 of the wire 3. More specifically, the automatic closing device 107 rotates around the portion of strand over which the ends 4, 5 of the wire 3 are bent in such a way as to wind them around the strand for making the closing.
  • the gripping means 108 comprise a toothed wheel 109 having one or more grooves 1 10 in which the ends 4, 5 of the wire 3 are inserted.
  • the machine 100 comprises a second toothed wheel 1 1 1 meshing with the first 109 for transmitting the motion to the first. In this way, the first toothed wheel 109 rotates around the strand to wind the ends 4, 5 of the wire around it.
  • each ring 2 is made with the same wire 3 which forms the ring 2 and by a single rotational winding movement, which, advantageously, may be mechanised and automated in a simple and inexpensive way.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wire Processing (AREA)
  • Ropes Or Cables (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

L'invention concerne un maillage (1) constitué d'anneaux de fil métallique, dans lequel chaque anneau (2) est constitué par la répétition d'enroulement et de torsade d'un fil métallique (3) sur lui-même pour former un brin annulaire à partir duquel font saillie les deux extrémités (4, 5) du fil métallique (3); les deux extrémités (4, 5) du fil métallique (3) étant amenées à proximité l'une de l'autre et étant simultanément enroulées en hélice autour du brin avec le même sens de bobinage pour fermer le brin.
PCT/IB2015/052230 2014-03-31 2015-03-26 Maillage constitué d'anneaux de fil métallique et procédé de fabrication d'un maillage constitué d'anneaux de fil métallique WO2015150987A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES15717647.0T ES2644019T3 (es) 2014-03-31 2015-03-26 Malla hecha de anillos de alambre y método para hacer malla hecha de anillos de alambre
EP15717647.0A EP3126074B1 (fr) 2014-03-31 2015-03-26 Maillage constitué d'anneaux de fil métallique et procédé de fabrication d'un maillage constitué d'anneaux de fil métallique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVR20140079 2014-03-31
ITVR2014A000079 2014-03-31

Publications (1)

Publication Number Publication Date
WO2015150987A1 true WO2015150987A1 (fr) 2015-10-08

Family

ID=50877619

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/052230 WO2015150987A1 (fr) 2014-03-31 2015-03-26 Maillage constitué d'anneaux de fil métallique et procédé de fabrication d'un maillage constitué d'anneaux de fil métallique

Country Status (4)

Country Link
EP (1) EP3126074B1 (fr)
AR (1) AR099889A1 (fr)
ES (1) ES2644019T3 (fr)
WO (1) WO2015150987A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019214862A (ja) * 2018-06-12 2019-12-19 前田工繊株式会社 複合繊維部材の製造方法、方形部材、及び箱状部材
CN112118957A (zh) * 2018-05-14 2020-12-22 米其林集团总公司 用于制造充气轮胎的编织胎圈丝线的包括将富余编织丝线长度折叠的方法和设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1504828A1 (fr) * 2003-08-04 2005-02-09 Italgeo S.R.L. Filet en anneaux de fil métallique pour une barrière de protection pour l'arrêt de chutes de pierres et procédé pour sa fabrication

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1504828A1 (fr) * 2003-08-04 2005-02-09 Italgeo S.R.L. Filet en anneaux de fil métallique pour une barrière de protection pour l'arrêt de chutes de pierres et procédé pour sa fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112118957A (zh) * 2018-05-14 2020-12-22 米其林集团总公司 用于制造充气轮胎的编织胎圈丝线的包括将富余编织丝线长度折叠的方法和设备
JP2019214862A (ja) * 2018-06-12 2019-12-19 前田工繊株式会社 複合繊維部材の製造方法、方形部材、及び箱状部材

Also Published As

Publication number Publication date
ES2644019T3 (es) 2017-11-27
EP3126074B1 (fr) 2017-07-19
AR099889A1 (es) 2016-08-24
EP3126074A1 (fr) 2017-02-08

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