EP0397270A1 - Linearwinde mit mehrfachen Zwingen mit programmierter Steuerung zur kontinuierlichen Bewegung des Zugkabels - Google Patents

Linearwinde mit mehrfachen Zwingen mit programmierter Steuerung zur kontinuierlichen Bewegung des Zugkabels Download PDF

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Publication number
EP0397270A1
EP0397270A1 EP90201165A EP90201165A EP0397270A1 EP 0397270 A1 EP0397270 A1 EP 0397270A1 EP 90201165 A EP90201165 A EP 90201165A EP 90201165 A EP90201165 A EP 90201165A EP 0397270 A1 EP0397270 A1 EP 0397270A1
Authority
EP
European Patent Office
Prior art keywords
vices
jacks
jaws
cable
vice
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Withdrawn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
EP90201165A
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English (en)
French (fr)
Inventor
William Zucchi
Paolo Biagini
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.)
Riva Calzoni SpA
Original Assignee
Riva Calzoni 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 Riva Calzoni SpA filed Critical Riva Calzoni SpA
Publication of EP0397270A1 publication Critical patent/EP0397270A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/006—Power actuated devices operating on ropes, cables, or chains for hauling in a mainly horizontal direction

Definitions

  • the subject of the present invention is a linear winch with vices for cables, bars, pipes and the like, with automatic continuous movement.
  • linear winches are known, equipped with a vice which can grip on the cable or tube or bar, and with translatory actuators for the vice, moving parallel to the cable, in conjunction with a second, fixed vice; such winches, with reciprocating movement of the movable vice and coordinated openings and lockings of the vices, can pull in or release the cable by successive steps, of mag­nitude equal to the stroke of the actuators used.
  • the devices having vices of known type provide for sliding of the jaws of the vices on the surface of the cable or bar, which on the one hand is a source of friction and on the other hand causes considerable wear of the jaws themselves, requiring their frequent replacement, as well as wearing out the cable itself.
  • a linear winch with vices for continuous movement which comprises a frame, on which there are present two vices slidable on tracks secured to the frame, equipped with respective independent actuators for for translatory movement along the tracks, and one fixed vice, in­tegral with the frame and aligned with the aforementioned vices, which vices, both fixed and slidable, are equipped with jaws holding in one direction only, aligned and oriented in the same way, through which may be passed a cylindrical element, such as a cable, tube, pipe or bar, freely slidable in them in one direction and restrained in the opposite direction, and loaded in the direction of restraint of the jaws of the vices, there being present, for each vice, associated actuators for disengagement of the jaws from the cable, capable of being controlled in opening and closing both manually and in auto­matic sequence associated with the relevant sliding movements for the movable vices, the opening of a jaw of the movable vices being act­uated only when at
  • the actuators of the slidable vices are constituted of two side-by-­side pairs of hydraulic jacks, having equal strokes and disposed symmetrically about the cable.
  • the internal pair of jacks possesses rods of shorter length, to the ends of which there is secured one vice, while the external pair possesses rods of greater length, carrying at the end the second vice.
  • the jacks possess rods of equal length and the internal pair of jacks has an anchor point set further back, in the direction of pull, with respect to the pair of jacks further out.
  • the jacks have feed velocities, in the direction of pull, smaller than the velocity of movement in the opposite direction.
  • the jacks possess equal and independent supply sources of hydraulic fluid.
  • the jacks are supplied from a hydraulic circuit comprising sensor means of the load carried by one pair of jacks, in the pulling phase and with the relevant jaws in the gripping position, the sensor means being adapted for governing release of the jaws of the other pair and the return movement of the associated jacks only when a predetermined value of load carried by the first pair of jacks is exceeded.
  • the jaws of the fired vice are normally open and can be manually actuated into the gripping position in every phase of the automatic pulling cycle of the jaws of the movable vices.
  • a unit for pulling and releasing cables comprises a reciprocating winch 1, through which a cable 2 passes, which can be reeled up or unreeled in turns on a winding drum 3.
  • the winch 1 is hydraulically operated and can exert a pull on the cable, taking its weight and progressively pulling it in, feeding it to the drum 3, rotationally driven by the motor 4; with the reverse movement, the winch may, instead, unwind the cable, unreeling it from the drum 3, in all cases holding the load applied to the cable and caused by the self-weight of the cable itself and the weight of ele­ments or equipment attached to it, without this load acting on the drum.
  • the winch 1 comprises a first movable vice 5 for gripping the cable, carried by the rods 6 of a pair of hydraulic jacks 7; a second movable vice 8 for gripping the cable, carried by the rods 9 of the pair of hydraulic jacks 10, and a fixed vice 11, firmly secured to the frame 12 of the winch.
  • the movable vices 5 and 8 are slidable on tracks 13; each of these vices, and also the fixed vice 11, possesses a pair of movable jaws, referenced respec­tively 14a, 14b, 14c for the vices 5, 8, 11, and having wedge-shaped sides, adapted for gripping around the cable when it is subjected to tension in the direction of the arrow F of Figure 2, that is to say in the direction of unreeling from the drum 3, and thus preventing sliding of the cable with respect to the associated vice in this direction, whereas in the opposite direction the movement of the cable causes, by friction, disengagement of the vices from the cable, which can therefore slide freely.
  • Said jaws have replaceable slide guides, suitable for allowing easy maintenance, and can be opened at the top for the introduction of the cable; these jaws, in their general characteristics, are of a type known in the art, and their construction will therefore not be des­cribed in greater detail.
  • the jacks 7 and 10 have equal strokes and are disposed side-by-side, the pair of jacks 10 being accommodated between the two jacks 7, in this way limiting the overall length of the assembly.
  • the jaws 14 (a, b, c) of the vices are equipped with hydraulic (oil) jacks 16 (a, b, c), by means of which the blocking and unblocking of the jaws from the cable can be directly actuated, without this taking place with sliding of the cable inside the jaws, thus reducing loading and wear.
  • the construction according to this invention enables pulling-in of the cable 2 to be achieved with continuous pull, that is to say with­out stops associated with the cyclical movement of the pulling devices.
  • This return movement causes the progressive engagement by friction of the jaws 14b with the cable 2, with transfer to these jaws, and therefore to the vice 8, of the associated load; when a certain per­centage of the load has been transferred to the jaws 14b, the vice 5 reverses its motion and returns into the advanced position 5′ at a higher velocity than the pulling velocity, thereby becoming available for renewed engagement with the cable.
  • the vice 5 commences a new pulling movement, pro­gressively taking over the load of the cable, while the vice 8 is rapidly brought into the advanced portion 8a for the continuation of the cycle, which can be automatically repeated until complete pulling-­in of the cable, or until a stop command.
  • the fixed vice 11 is kept open and allows the cable to slide in it towards the drum, but can be manually blocked in case of need and con­stitutes a safety component, which therefore prevents return of the cable in case of anomalies also, for example if the movable vices or their associated jacks should fail.
  • the feed pressure Pt is supplied at the valve 17 and at the valves 18, 19 for piloting the respective jaws 14a, 14b, while their selector valves 20, 21 are at discharge.
  • the jacks 10 of the jaws 14b are in pulling movement, actuated by the feed pressure Pb; when the end plungers 10a of the pistons of the jacks 10 sealingly enter the res­pective cups 10b, the pilot pressure is fed to the valve 23, which, multiplied by the jacks 10, overcomes the opposed piloting derived from the feed Pb via the valve 30 and causes switching of said valve 23.
  • the valve 23 now causes closing of the one-way valve 24 and opening of the one-way valve 25, and pilots the valve 18, determining closing of the jaws 14a and movement of the jacks 7, which continues simul­taneously with that of the jacks 10.
  • the velocity of the pistons of the jacks 10 in the return stroke is greater than the velocity of the jacks 7 in the pulling stroke (and vice versa), so that the jacks 10 can be available for engaging again with the cable before the jacks 7 have completed their pulling stroke (and vice versa).
  • the feeds Pa and Pb are equal, but are supplied from two different pumps, operating simultaneously, to make the two circuits independent and prevent imbalance occurring between the circuits.
  • Releasing of the cable is carried out with the inverse sequence of the movements of the vices, under manual control, or automatically, in correspondence with each exchange between the vices alternately holding the cable, the disengagement of the respective jaws 14a, 14b by means of the jacks 16a - 16b; the jaws 14c are, in this operation also, kept continually open to allow the cable to pass through.
  • the valves 32 and 33 are the same as the valves 26 and 30 already men­tioned.
  • the linear winch according to this invention therefore enables the operations of pulling in and paying out a cable of large dimensions and/or subject to high loads to be carried out in a continuous pro­cedure without shocks or jerks, but without the possibility of a situation of failure or uncontrolled sliding of the cable occurring, the cable itself being always held by at least one vice, with the jaws in the clamping condition.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
EP90201165A 1989-05-12 1990-05-08 Linearwinde mit mehrfachen Zwingen mit programmierter Steuerung zur kontinuierlichen Bewegung des Zugkabels Withdrawn EP0397270A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8920485A IT1229712B (it) 1989-05-12 1989-05-12 Verricello lineare a morse multiple a comando programmato per movimento continuo della fune di trazione.
IT2048589 1989-05-12

Publications (1)

Publication Number Publication Date
EP0397270A1 true EP0397270A1 (de) 1990-11-14

Family

ID=11167661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90201165A Withdrawn EP0397270A1 (de) 1989-05-12 1990-05-08 Linearwinde mit mehrfachen Zwingen mit programmierter Steuerung zur kontinuierlichen Bewegung des Zugkabels

Country Status (2)

Country Link
EP (1) EP0397270A1 (de)
IT (1) IT1229712B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0703370A1 (de) * 1991-07-11 1996-03-27 Hubert Skibowski Stellantrieb für ein linear bewegbar gelagertes Bauteil
DE19960773A1 (de) * 1999-12-16 2001-06-28 Haustadt & Timmermann Gmbh & C Seilzugvorrichtung
WO2004078577A1 (en) * 2003-03-07 2004-09-16 Brødr. Bauer-Nilsen As A method and a device for increasing the stretch of a winch wire beyond the pulling capacity of the winch
EP1975113A3 (de) * 2007-03-29 2009-07-22 TERRA AG fuer Tiefbautechnik Seilzugvorrichtung zur Verwendung beim Verlegen oder Erneuern von Leitungsrohren im Boden
US8540458B2 (en) 2011-06-14 2013-09-24 Roodle, Inc. Center hole ram cable puller
EP2933219A1 (de) 2014-04-14 2015-10-21 Stefan Leitner Spannvorrichtung für seile
WO2017200440A1 (en) * 2016-05-19 2017-11-23 Saab Ab A fluid actuator arrangement and a method for control of a fluid actuator arrangement
IT201700079965A1 (it) * 2017-07-14 2019-01-14 Remazel Eng S P A Verricello lineare e relativo metodo di controllo
IT201800007692A1 (it) * 2018-07-31 2020-01-31 Leitner Spa Impianto di trasporto a fune

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB899463A (en) * 1959-06-17 1962-06-20 Dowty Rotol Ltd Improvements in earth boring equipment
FR1514163A (fr) * 1966-11-14 1968-02-23 Tractel S A Soc Dispositif à pinces mobiles pour la rétrogradation continue et uniforme d'une charge
US3570032A (en) * 1969-03-07 1971-03-16 Valentine E Macy Jr High vertical lift bridge
US3711000A (en) * 1968-09-04 1973-01-16 Inst Francais Du Petrole Surface apparatus for handling an elastic column
GB1309232A (en) * 1969-03-14 1973-03-07 Press W & Son Ltd Rope pulling apparatus
US4007915A (en) * 1975-12-15 1977-02-15 Hydranautics Jacking apparatus
EP0057622A2 (de) * 1981-01-19 1982-08-11 KLEY-FRANCE, Société Anonyme dite: Hydraulische lineare Zugvorrichtung, die zwei selbstklemmende Backen aufweist, welche abwechselnd das axial geführte lasttragende Seil festklemmen
FR2502604A1 (fr) * 1981-03-28 1982-10-01 Habegger Willy Ag Dispositif de traction de cable
GB2095741A (en) * 1981-04-01 1982-10-06 Wesch William E Gripping apparatus
EP0220968A1 (de) * 1985-10-23 1987-05-06 Cibeles International Inc. Kontinuierlich arbeitende hydraulische Seilzugvorrichtung
FR2613342A1 (fr) * 1987-04-03 1988-10-07 Bauakademie Ddr Dispositif et procede pour la transformation d'une translation intermittente en une translation continue

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB899463A (en) * 1959-06-17 1962-06-20 Dowty Rotol Ltd Improvements in earth boring equipment
FR1514163A (fr) * 1966-11-14 1968-02-23 Tractel S A Soc Dispositif à pinces mobiles pour la rétrogradation continue et uniforme d'une charge
US3711000A (en) * 1968-09-04 1973-01-16 Inst Francais Du Petrole Surface apparatus for handling an elastic column
US3570032A (en) * 1969-03-07 1971-03-16 Valentine E Macy Jr High vertical lift bridge
GB1309232A (en) * 1969-03-14 1973-03-07 Press W & Son Ltd Rope pulling apparatus
US4007915A (en) * 1975-12-15 1977-02-15 Hydranautics Jacking apparatus
EP0057622A2 (de) * 1981-01-19 1982-08-11 KLEY-FRANCE, Société Anonyme dite: Hydraulische lineare Zugvorrichtung, die zwei selbstklemmende Backen aufweist, welche abwechselnd das axial geführte lasttragende Seil festklemmen
FR2502604A1 (fr) * 1981-03-28 1982-10-01 Habegger Willy Ag Dispositif de traction de cable
GB2095741A (en) * 1981-04-01 1982-10-06 Wesch William E Gripping apparatus
EP0220968A1 (de) * 1985-10-23 1987-05-06 Cibeles International Inc. Kontinuierlich arbeitende hydraulische Seilzugvorrichtung
FR2613342A1 (fr) * 1987-04-03 1988-10-07 Bauakademie Ddr Dispositif et procede pour la transformation d'une translation intermittente en une translation continue

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0703370A1 (de) * 1991-07-11 1996-03-27 Hubert Skibowski Stellantrieb für ein linear bewegbar gelagertes Bauteil
DE19960773A1 (de) * 1999-12-16 2001-06-28 Haustadt & Timmermann Gmbh & C Seilzugvorrichtung
DE19960773C2 (de) * 1999-12-16 2002-02-07 Mario Ende Seilzugvorrichtung
WO2004078577A1 (en) * 2003-03-07 2004-09-16 Brødr. Bauer-Nilsen As A method and a device for increasing the stretch of a winch wire beyond the pulling capacity of the winch
EP1975113A3 (de) * 2007-03-29 2009-07-22 TERRA AG fuer Tiefbautechnik Seilzugvorrichtung zur Verwendung beim Verlegen oder Erneuern von Leitungsrohren im Boden
US8540458B2 (en) 2011-06-14 2013-09-24 Roodle, Inc. Center hole ram cable puller
EP2933219A1 (de) 2014-04-14 2015-10-21 Stefan Leitner Spannvorrichtung für seile
WO2017200440A1 (en) * 2016-05-19 2017-11-23 Saab Ab A fluid actuator arrangement and a method for control of a fluid actuator arrangement
US11286965B2 (en) 2016-05-19 2022-03-29 Saab Ab Fluid actuator arrangement and a method for control of a fluid actuator arrangement
IT201700079965A1 (it) * 2017-07-14 2019-01-14 Remazel Eng S P A Verricello lineare e relativo metodo di controllo
IT201800007692A1 (it) * 2018-07-31 2020-01-31 Leitner Spa Impianto di trasporto a fune
EP3604071A1 (de) * 2018-07-31 2020-02-05 LEITNER S.p.A. Kabeltransportsystem
US11220277B2 (en) 2018-07-31 2022-01-11 Leitner S.P.A. Cable transportation system

Also Published As

Publication number Publication date
IT1229712B (it) 1991-09-07
IT8920485A0 (it) 1989-05-12

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