EP0578545B1 - Hebevorrichtung für eine Last - Google Patents

Hebevorrichtung für eine Last Download PDF

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Publication number
EP0578545B1
EP0578545B1 EP93401714A EP93401714A EP0578545B1 EP 0578545 B1 EP0578545 B1 EP 0578545B1 EP 93401714 A EP93401714 A EP 93401714A EP 93401714 A EP93401714 A EP 93401714A EP 0578545 B1 EP0578545 B1 EP 0578545B1
Authority
EP
European Patent Office
Prior art keywords
load
pulley
pulleys
cables
support
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
EP93401714A
Other languages
English (en)
French (fr)
Other versions
EP0578545A1 (de
Inventor
Gérard Laydevant
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.)
Neyrpic Framatome Mecanique
Original Assignee
Neyrpic Framatome Mecanique
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 Neyrpic Framatome Mecanique filed Critical Neyrpic Framatome Mecanique
Publication of EP0578545A1 publication Critical patent/EP0578545A1/de
Application granted granted Critical
Publication of EP0578545B1 publication Critical patent/EP0578545B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/54—Safety gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads

Definitions

  • the present invention relates to a load handling device.
  • the invention relates to high security handling devices intended to be used in particular on hazardous sites such as nuclear power plants, for example for handling fuel elements.
  • two-strand handling devices which comprise a winch provided with at least one winding drum around which the first ends of two support cables are wound symmetrically, the second end of each of these passing through a hauled pulley and being connected to one end of a safety balancing spreader, forming a fixed point, the hauled pulleys being connected to a load support yoke.
  • the reeved pulleys are arranged opposite one another.
  • each cable passes over a reeved pulley, over a deflection pulley and over another reeved pulley disposed of the other side of the load support yoke and is connected to one end of a safety balancer.
  • the object of the invention is therefore to solve these problems by proposing a load handling device which is simple, reliable and which makes it possible to maintain the load in position and to prevent it from swinging, in particular in the event of one of the support cables.
  • the subject of the invention is a device for handling a load, according to claim 1.
  • each of these passes through a reeved pulley 5 and 6 respectively and is connected to one end of a safety balancing spreader 7 forming a fixed point.
  • this type of device has a certain number of drawbacks in controlling the swinging of the load, in particular in the event of one of the support cables breaking.
  • These devices also include a winch 10 provided with a winding drum 11 around which the first ends of two support cables 12 and 13 are wound symmetrically.
  • each of these cables passes through a first reeved pulley 14, around a deflection pulley 15 and through a second reeved pulley 16 and is connected to one end of a safety balancing spreader 17.
  • the other cable 13 follows a similar path around a first reeved pulley 18, a deflection pulley 19 and a second reeved pulley 20 to the other end of the safety balancing lifter 17.
  • first and second reeved pulleys adapted to cooperate with each cable are arranged parallel and symmetrically in the load support yoke shown diagrammatically by an arrow 21 in this Fig. 2.
  • This structure makes it possible to obtain good holding in position and to avoid the rocking of the load, but is relatively complex as has been explained previously.
  • FIG.3 there is shown a block diagram of an embodiment of a device according to the invention.
  • This device always includes a winch 25 provided with at least one winding drum 26 around which the first ends of two support cables 27 and 28 are wound symmetrically.
  • each of these cables passes through a reeved pulley respectively 29 or 30 and is connected to one end of a safety balancing lifting beam 31.
  • reeved pulleys 29 and 30 are connected to a load support yoke which will be described in more detail below and which comprises, for example, a load support hook 32.
  • the pulleys 29 and 30 are arranged one above the other and are angularly offset from one another.
  • the two cables descend in the direction of the muffle and cross at the level thereof to pass around each of the pulleys 29 and 30 and then go up towards the balancing spreader on which their second ends are permanently fixed, this spreader constituting a fixed point of conventional type.
  • this structure makes it possible to maintain the load and the whole of the block in a vertical position and prevents it from rocking in the event of one of the two support cables breaking.
  • the winch drum comprises for example conventional winding means with a thread on the left for one of the cables. and winding means with a net on the right for the other cable.
  • each end of the balancing spreader 31 can for example be associated with stop or position detection means constituted for example by a limit switch push button, and designated by the general reference 33.
  • FIG.5 and 6 there is shown an embodiment of a load support yoke forming part of a device according to the invention.
  • the pulleys 29 and 30 are rotatably mounted between two flanges 35 and 36 of this yoke 37, by means of guide shafts 38 and 39 respectively. At its lower end, this yoke includes the load support hook 32 previously mentioned.
  • the assembly always remains balanced even in the event of a break in one of the two support cables insofar as the axis of this hook, that is to say in this case the vertical axis, passes through the axis of the two pulleys.
  • the pulleys are offset angularly by an angle approximately equal to 30 ° relative to each other, that is to say that they are offset each at an angle approximately equal to 15 ° on either side of the longitudinal plane of symmetry of the screed.
  • the device according to the invention is particularly well suited for handling loads with a high degree of security because it provides redundancy for keeping these loads in position and can be used in extremely small spaces such as for example tubes or the like.

Claims (3)

  1. Vorrichtung zur Beförderung einer Last mit zwei Tragseilen (27, 28), die über einen Flaschenzug (29, 30) verlaufen und deren Ende mit einem Ausgleichsicherheitshebel (31) verbunden ist, wobei die Flaschenzüge (29, 30) mit einem Lastentragegestell (37) verbunden sind und der eine über dem anderen angeordnet ist und der eine gegenüber dem anderen winkelmäßig verdreht ist,
    dadurch gekennzeichnet, daß
    sie eine Winde umfaßt, die mit einer einzigen Seiltrommel (26) ausgestattet ist, um welche die anderen Enden der zwei Tragseile (27, 28) symmetrisch verlaufen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Flaschenzüge um einen Winkel kleiner oder gleich 90° verdreht sind.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Flaschenzüge jeweils um einen Winkel von im wesentlichen 15° zu beiden Seiten der longitudinalen Symmetrieebene des Gestells verdreht sind.
EP93401714A 1992-07-07 1993-07-01 Hebevorrichtung für eine Last Expired - Lifetime EP0578545B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR929208390A FR2693447B1 (fr) 1992-07-07 1992-07-07 Dispositif de manutention d'une charge.
FR9208390 1992-07-07

Publications (2)

Publication Number Publication Date
EP0578545A1 EP0578545A1 (de) 1994-01-12
EP0578545B1 true EP0578545B1 (de) 1997-09-24

Family

ID=9431647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401714A Expired - Lifetime EP0578545B1 (de) 1992-07-07 1993-07-01 Hebevorrichtung für eine Last

Country Status (4)

Country Link
EP (1) EP0578545B1 (de)
AT (1) ATE158563T1 (de)
DE (1) DE69314105D1 (de)
FR (1) FR2693447B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2311052A (en) * 1996-03-12 1997-09-17 Metallifacture Ltd Support for a spare wheel using two parallel cables
CN104495665B (zh) * 2014-12-02 2017-01-11 河南省矿山起重机有限公司 一种起重机起升装置、起重机滑轮梁及起重机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU483825A3 (ru) * 1970-03-07 1975-09-05 Хеш Машиненфабрик Дейчланд Аг (Фирма) Подъемный механизм
US3786935A (en) * 1972-05-22 1974-01-22 Whiting Corp Overhead crane
FR2290383A1 (fr) * 1974-11-08 1976-06-04 Commissariat Energie Atomique Pont roulant
DE2844187A1 (de) * 1978-10-11 1980-04-24 Noell Gmbh Sicherheitshubwerk fuer mehrstraengige seilaufhaengungen
DE3130160C2 (de) * 1981-07-30 1983-11-03 Wiener Brückenbau- und Eisenkonstruktions-AG, Wien Seilstarrführung für ein Hebezeug
US4721286A (en) * 1985-07-24 1988-01-26 Amca International Corporation Split block for extended travel

Also Published As

Publication number Publication date
ATE158563T1 (de) 1997-10-15
DE69314105D1 (de) 1997-10-30
FR2693447B1 (fr) 1994-09-30
FR2693447A1 (fr) 1994-01-14
EP0578545A1 (de) 1994-01-12

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