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EP 0 953 725 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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09.06.2004 Bulletin 2004/24 |
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Date of filing: 16.04.1999 |
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Device for storing and loading reinforced rods for the front and vault of a tunnel
Vorrichtung zur Lagerung und Beladung von verstärkten Stäben für die Front und das
Gewölbe eines Tunnels
Dispositif de stockage et chargement des tiges renforcées pour le front et la voûte
d'un tunnel
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Designated Contracting States: |
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AT CH ES FR IT LI |
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Priority: |
30.04.1998 IT TO980370
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Date of publication of application: |
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03.11.1999 Bulletin 1999/44 |
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Proprietor: TREVI S.p.A. |
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I-47023 Cesena
(Province of Forli) (IT) |
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Inventors: |
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- Martella, Achille
64032 Atri (TE) (IT)
- Michele, Francesco
85035 Noepoli (PZ) (IT)
- Siepi, Maurizio
47020 Longiano (FO) (IT)
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Representative: Lotti, Giorgio et al |
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c/o Ing. Barzanò & Zanardo Milano S.p.A.
Corso Vittorio Emanuele II, 61 10128 Torino 10128 Torino (IT) |
(56) |
References cited: :
EP-A- 0 424 733 US-A- 3 677 345 US-A- 5 720 582
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EP-A- 0 470 061 US-A- 5 152 638
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- DATABASE WPI Section Ch, Week 199724 Derwent Publications Ltd., London, GB; Class
H01, AN 1997-259454 XP002222569 & AU 68061 96 A (CRAM AUSTRALIA PTY LTD), 10 April
1997 (1997-04-10) & US 5 795 107 A (CRAM AUSTRALIA PTY LTD) 18 August 1998 (1998-08-18)
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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[0001] The object of the invention is a device for storing and loading reinforced bars for
the front and vault of a tunnel.
[0002] In particular, the invention refers to a technique for inserting a reinforcement
comprised of sections of glass reinforced resin of various sizes between perpendicular
or angled perforations in relation to the front of excavation of the tunnel in order
to prevent cave-ins (extrusion of the front).
[0003] Loaders currently for inserting said sections which are equipped with feed systems
which function by means of frictions rollers or on return hoists and cables.
[0004] The traditional techniques involve storing the reinforcements in bulk, one on top
of the other or piled in racks.
[0005] The haphazard nature of this kind of storage system means that it frequently happens
that two or more reinforcements can be accidentally dragged due to reciprocal friction
or due to two reinforcements next to each other being hooked together.
[0006] In addition, the existence of dust and detritus in the environment surrounding the
storage means can frequently cause damage to parts of the machine and to the reinforced
rods themselves.
[0007] The fact that the systems which use piled reinforcements exploit gravity to load
them in succession onto the rollers should also be considered; in cases like this
the system must of necessity be used in a vertical position with obvious problems
in terms of space and organisation.
[0008] The aim of the present invention is to suggest a device for storing and loading reinforced
rods for the front and vault of a tunnel which will not be subject to the inconvenient
problems cited above and which will in particular avoid the accidental dragging of
two or more reinforcements and take up a limited amount of space, permitting at the
same time that the reinforced rods may be positioned in all the possible positions
for perforation in conditions of absolute safety and reliability.
[0009] For this and further aims which will be better understood hereinafter the invention
suggests the realisation of a device for storing reinforced rods for the front and
vault of a tunnel of the type mounted on a machine for preventive consolidation of
excavations in tunnels in correspondence to a working unit of the machine, which is
in turn mounted in correspondence to one end of telescopic standards hinged to the
frame of the machine itself, characterised by the fact that it comprises a number
of tubes flanking each other containing the rods to feed to the working unit singularly
and selectively by means of a tapered conveyor with a funnel; thrusting means with
fingers spaced longitudinally being positioned in correspondence to the ends of each
rod opposite those fitted into the conveyor.
[0010] The device according to the present invention will now be described, with reference
to the attached drawings in which:
- FIG. 1
- is a lateral view of a machine for the preventive consolidation of excavations in
tunnels which may be equipped with the device according to the present invention;
- FIG. 2
- is a frontal view of the machine equipped with the device according to the present
invention; and
- FIG. 3
- is an exploded view of the device according to the present invention.
[0011] FIGS. 1 and 2 illustrate a machine for the preventive consolidation of excavations
in tunnels of the type described in patent application no. 67347-A/90 in the name
of the same Inventor, which may be indicated for using the device according to the
present invention.
[0012] While a specific embodiment of the machine is illustrated in FIGS. 1 and 2, it is
to be understood that such disclosure is merely for the purposes of illustration in
that various modifications are possible without altering in any way the principles,
aims and advantages of the invention itself.
[0013] A frame 10 which forms the carrying structure of the machine is mounted on a motor
driven tracked vehicle 11 and provided with pistons 12 having stabilising feet.
[0014] A central power unit 13 is located on top of the frame 10 and it works the rotary
working unit and the auxiliary units used for moving and positioning the machine.
As shown in the attached illustration, the working unit is single and it is formed
by two telescopic standards 14 and 15 which are integral, at one extremity, with respective
plates 16 and 17 and at the other extremity with a boom 18. Said boom is provided
with a working unit 19, an engine 20 and a windlass 21 for moving the engine 2.
[0015] The plates 16 and 17 that support the telescopic standards 14 and 15 are also provided
with engines 22 wherein the pinions rotate on a toothed circumference 23 which is
part of the plates. The plates are provided with a cursor that is able to slide along
slides 24 that are vertical when the machine is working and are turned down in a horizontal
position during transport. For this purpose, the slides 24 are pivotally connected
to the frame 10 and pistons 25 worked by the power unit 13 for rotating horizontally
the slides 24 and the standards 14 and 15 from which the boom 18 has to be previously
removed.
[0016] The device or loader according to the present invention is illustrated in its entirety
in FIG. 2 with the reference 26, mounted on the machine by means of a support 2.
[0017] As can be observed in FIG. 3 the device or loader according to the present invention
presents a number of rods 36, 37, 38. Each bar is housed in a tube 39 which isolates
it from the bars on either side, the tube is in turn located inside a storage tube
3.
[0018] The front extremity of the storage tube 34 ends in a funnel shape 35, the function
of which is to direct the rods between the friction roller 32, which are rotated by
a motor drive unit 33. In this way only one of the rods 36, 37, 38 stored in the loader
is presented for use at a time.
[0019] The tubes 39 should preferably be made of a material with a low friction co-efficient
which can slide easily. In addition, as the tube 39 is an element with closed sides
it protects the rods from dust and detritus.
[0020] The feeding system for the rods is comprised of a thrusting means 44 at the end of
which is fixed a plate 43 with fingers 40, 41 and 42 of different lengths, which make
the rods 36, 37 and 38 advance in succession toward the pair of rollers 32. In this
way the system can be used in any position in relation to the vertical.
[0021] The distance between the rollers 32 can be regulated by means of a piston, which
optimises the friction of the rollers on the rods.
[0022] The bars should preferably be loaded by moving, for example by turning over or totally
removing, the group of fingers 40, 41 and 42, in order to free rear access to the
tube 39. It is thus possible to introduce the first rod 31 by hand making it advance
until the rollers 32 can drag it.
[0023] The rod 36 is then introduced and made to advance to a position further back, inside
the funnel 35, and so on for the other rods 37 and 38, each being in positions still
further back. The backward step between the rods is constant and corresponds to the
difference in length of the fingers 40, 41 and 42 of the thrusting means 4
[0024] It should be understood that the thrusting means 44, as well as being a single device
equipped with fingers 40, 41 and 42 can, being comprised only of the fingers separate
from each other, consequently work one independently of the others.
[0025] The loading operation is carried out with the personnel at the ground, that is with
the perforation guide which carries the perforating equipment, and the loader, turned
to its lowest position, thus ensuring that the work is carried out in conditions of
the utmost safety.
[0026] The operations of placing the reinforced rods vice versa do not require any manual
intervention and can be carried out in all possible positions of perforation.
1. Device for storing reinforced rods for the front and vault of a tunnel of the type
mounted on a machine for preventive consolidation of excavations in tunnels in correspondence
to a working unit (19) of the machine, which is in turn mounted in correspondence
to one end of telescopic standards (14, 15) hinged to the frame (10) of the machine
itself, characterised by the fact that it comprises a number of tubes (39) flanking each other containing
the rods (36, 37, 38) to feed to the working unit singularly and selectively by means
of a tapered conveyor (34) with a funnel (35); thrusting means (44) with fingers (40,
41, 42) spaced longitudinally being positioned in correspondence to the ends of each
rod (36, 37, 38) opposite those fitted into the conveyor (34).
2. Device according to Claim 1 characterised by the fact that the fingers (40, 41, 42) are pushed to their extreme limit by a single
thrusting means (44).
3. Device according to Claim 1 characterised by the fact that the fingers (40, 41, 42) are separate from each other and each constitute
a single thrusting means (44).
4. Device according to Claim 1 characterised by the fact that the conveyor (34) is a tapered cylindrical tube with a funnel (35)
at one end from which exits one rod at a time of those (36, 37, 38) fitted inside
the tube (34).
1. Vorrichtung zur Lagerung von verstärkten Stäben für die Front und das Gewölbe eines
Tunnels von jener Art, die in Übereinstimmung mit einer Arbeitseinheit (19) der Maschine,
welche wiederum in Übereinstimmung mit einem Ende von schwenkbar am Rahmen (10) der
Maschine selbst angebrachten ausziehbaren Ständern (14, 15) angebracht ist, an einer
Maschine zur vorbeugenden Verstärkung von Ausgrabungen in Tunneln angebracht ist,
dadurch gekennzeichnet, daß sie Folgendes umfaßt: eine Anzahl von seitlich aneinander angrenzenden Rohren (39),
welche die Stäbe (36, 37 38) enthalten, die durch eine sich verjüngende Transportvorrichtung
(34) mit einem Trichter (35) einzeln und ausgewählt zur Arbeitseinheit zuzuführen
sind; und ein Schubmittel(44) mit in der Längsrichtung räumlich getrennten Fingern
(40, 41, 42), die jeweils in Übereinstimmung mit dem Ende jedes Stabs (36, 37, 38),
das sich entgegengesetzt zu dem in die Transportvorrichtung (34) eingesetzten Ende
befindet, angeordnet sind.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Finger (40, 41, 42) durch ein einzelnes Schubmittel (44) bis zu ihrer äußersten
Grenze geschoben werden.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Finger (40, 41, 42) voneinander getrennt sind, und jeder ein einzelnes Schubmittel
(44) einsetzt.
4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Transportvorrichtung (34) ein sich verjüngendes zylinderförmiges Rohr mit einem
Trichter (35) an einem Ende ist, das zu einem Zeitpunkt einen Stab der in das Rohr
(34) eingesetzten Stäbe (36, 37, 38) abgibt.
1. Dispositif de stockage de tiges renforcées pour le front et la voûte d'un tunnel du
type monté sur une machine pour une consolidation préventive des excavations dans
des tunnels en correspondance avec une unité d'exploitation (19) de la machine, qui
est à son tour montée en correspondance à une extrémité de montants télescopiques
(14, 15) articulés sur le châssis (10) de la machine elle-même, caractérisé en ce qu'il comprend plusieurs tubes (39) contigus les uns par rapport aux autres contenant
les tiges (36, 37, 38) pour alimenter l'unité d'exploitation de manière singulière
et sélective au moyen d'un transporteur conique (34) avec un entonnoir (35) ; des
moyens de poussée (44) avec des doigts (40, 41, 42) espacés longitudinalement et étant
positionnés en correspondance avec les extrémités de chaque tige (36, 37, 38) à l'opposé
de celles adaptées dans le transporteur (34).
2. Dispositif selon la revendication 1 caractérisé en ce que les doigts (40, 41, 42) sont poussés à leur limite extrême par un moyen de poussée
simple (44).
3. Dispositif selon la revendication 1 caractérisé en ce que les doigts (40, 41, 42) sont séparés les uns des autres et que chacun constitue un
moyen de poussée simple (44).
4. Dispositif selon la revendication 1 caractérisé en ce que le transporteur (34) est un tube cylindrique conique avec un entonnoir (35) à une
extrémité d'où une tige sort, parmi celles (36, 37, 38) adaptées à l'intérieur du
tube (34).