EP2978705B1 - Bras oscillant pour un moyen d'accrochage mult-brins - Google Patents

Bras oscillant pour un moyen d'accrochage mult-brins Download PDF

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Publication number
EP2978705B1
EP2978705B1 EP13713406.0A EP13713406A EP2978705B1 EP 2978705 B1 EP2978705 B1 EP 2978705B1 EP 13713406 A EP13713406 A EP 13713406A EP 2978705 B1 EP2978705 B1 EP 2978705B1
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EP
European Patent Office
Prior art keywords
eye
compensating rocker
eyes
longitudinal axis
transverse axis
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.)
Active
Application number
EP13713406.0A
Other languages
German (de)
English (en)
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EP2978705A1 (fr
Inventor
Bernhard Oswald
Jürgen GRAYER
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.)
Pewag Austria GmbH
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Pewag Austria GmbH
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Filing date
Publication date
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Publication of EP2978705A1 publication Critical patent/EP2978705A1/fr
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Publication of EP2978705B1 publication Critical patent/EP2978705B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/125—Chain-type slings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/14—Slings with hooks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/16—Slings with load-engaging platforms or frameworks

Definitions

  • the present invention relates to a compensating rocker for a stop means with two or more strands, wherein the compensating rocker has a base body with a longitudinal axis which coincides with undeformed balance rocker with the vertical, wherein formed in the base body are: a first eye for fixing the base body to a Supporting means and two or more second eyelets each for attaching the strands of the stop means, the second eyelets each having a center and the first eyelet each include a position angle, the first leg by connecting the center of the second eyelet and with, based on the Longitudinal axis, top point of the first eyelet and the second leg is formed by the longitudinal axis.
  • a sling with multiple strands is necessary.
  • the strands are loaded with the same force when lifting is then more theoretical.
  • the strands are often charged differently. It is not always possible to arrange the attachment points so that all strands are simultaneously tightened and loaded with the same force during lifting. In particular, if a flat article is raised at several attachment points, it could even be that one of the strands is not loaded at all and sags.
  • a stop means with said balance rocker which helps the strands of the sling at one point, for. B. for fastening the support means, merges.
  • Balancing rockers are used in lifting gear when pulling forces from a suspension element on several outgoing strands, eg. B. chains must be distributed.
  • Balance rockers distribute weight in the lifting gear of a load to be lifted onto the strands. In general, there are four strands, which should take the load.
  • the balance rocker is suspended by its first eye on a suspension means rotatable.
  • the suspension means may be a ring, a chain strand, a rod, a rope or the like and on free end having a component such as a link, a ring, an eye, a hook or a shackle, which is guided by the first eyelet.
  • the compensating rocker performs a rotational movement about the first eyelet, which thus forms a suspension point for the stop means. This distinguishes Ausreteswippen of so-called traverses.
  • a strand of the stop means is struck or fastened, z. B. with a sufficiently large link, a shackle, a hook or similar components.
  • a sufficiently large link e.g., a shackle, a hook or similar components.
  • the entire unit of balance rocker and strands and possibly suspension is referred to in the case of chains as Kettenge von.
  • the main body of the balance rocker is symmetrical with respect to the longitudinal axis, however, it may be advantageous for special load cases when the body has no symmetry to the longitudinal axis.
  • the compensating rockers as z. B. from the DE 2819986 . US 4671418 . JP 48-39701 or DE 2261163 are known to compensate within certain limits, the load differences or differences in length.
  • the second eyelets are then no longer at the same height.
  • Balance rockers are not trusses, as they are eg. B. from the US 4767099 . DE 2241004 . US 2721757 . US 2213718 . US 1441710 . EP 0802145 A1 or JP 53,36788 are known. These are used when several slings are to be used in a hoist, which are struck at points that are so far apart that the slings can not be summarized directly at a single point, because they were too horizontal. At traverses the slings are hung as far as possible vertically. Trusses are usually constructed in several parts, whereas compensating rockers have a one-piece body.
  • the mount points, which at a Compensation rocker are formed by the second eyelets, are in a Traverse relative to the ⁇ senificat in a distance which is one or more orders of magnitude larger than the diameter of the eyelets.
  • the distance between the suspension points is usually not fixed in crossbeams, but selectable.
  • the eyelets have a fixed distance from the longitudinal axis of a maximum of 6-fold ⁇ sen pressmesser.
  • traverses should not or should not tilt in use. They are therefore set with adjustable attachment points to adjust the load distribution on the crossbeam so that the crossbeam is balanced.
  • Such a balancing of the load distribution is just not given in a compensating rocker, as the term "rocker" already shows.
  • the US 2010/0078950 A1 discloses an attachment point for screwing. Sleeves with eccentric bore allow the compensation of misalignment when screwing.
  • Object of the present invention is to develop the balance rocker of the type mentioned so that their compensation potential is increased.
  • the problem is solved by the balance rocker according to claim 1, wherein in particular the attitude angle between 65 ° and 100 °.
  • the invention is based on the finding that the compensating rocker can rotate about the difference between the attitude angle and the inclination angle when it equalizes loads between two or more strands of the slinging means.
  • the compensation potential of the compensating rocker according to the invention with respect to the equalization of the load on two or more strands by the selected position angle is particularly large.
  • the compensating rocker can rotate under load by a larger angle, so that the forces acting on the connected strands of the lifting means forces evened out to a greater extent and consequently the strands are evenly loaded.
  • a more uniform load on the strands of the sling means has the advantage of reducing the likelihood of extreme load cases, which could possibly result in damage or even breakage.
  • the equalization of the load distribution between the strands of the stop means also causes a homogenization of the wear of the second eyelets and thus a longer life of the balance rocker.
  • Another advantage results from the fact that the second eyelets with respect to the longitudinal axis move further vertically to the first eyelets and thus the extension of the body due to the larger position angle is reduced along the longitudinal axis.
  • the balance rocker is flatter overall, so that less material is needed, whereby the manufacturing cost decreases.
  • chains as a stop means for transmitting tensile forces
  • it is not limited to chains, but also applicable to ropes, straps, slings, wire ropes and rods or other means for transmitting tensile forces.
  • attitude angle is greater than 70 ° or preferably greater than 75 °. Preferably, it is between 70 ° and 90 °. In this angular range, the above-mentioned advantages occur to a particular extent and instability is avoided. In particular, the load distribution between the strands is made particularly uniform and the amount of material required for producing the compensating rocker is further reduced. It should also be noted that preferably all strands of the sling are the same length.
  • the invention also includes a multi-strand stop means, the strands of which are brought together on the compensating rocker and are preferably of equal length, in particular four-stranded stop means, in which only two strands are mounted on the compensating rocker and two strands are mounted without compensating rocker.
  • the main body has a transverse to the longitudinal axis transverse axis and is symmetrical to the transverse axis and preferably also to the longitudinal axis. Not only simplifies the production of the body with increasing symmetry, so that it is cheaper to produce, above all, the probability is reduced that the strands are incorrectly connected to the body.
  • a particularly surprising advantage of the symmetrical structure of the base body with respect to the transverse axis is that it can also be used rotated by 180 ° about the transverse axis, without thereby the compensation potential of the balance rocker is changed.
  • the basic body can either be turned over at regular intervals or else when the first and the second eyelets have exceeded a certain amount of wear. By turning the base body, the first and second eyelets are loaded at other not yet or not completely worn places and wear there. Since two different wear areas per eyelet are thus created, the compensating rocker has twice the service life until the maximum wear dimension in both fastening positions is exceeded.
  • the first eyelet is designed as a slot. With symmetry of the main body with respect to the transverse axis, the center of the first eyelet and the centers of the second eyelets lie on the transverse axis.
  • the longer extension of the slot extends in one embodiment along the longitudinal axis.
  • the position angle can be applied to manufacturing technology Way are very easily adjusted by the extension of the slot along the longitudinal axis, so that this configuration of the body is very inexpensive to manufacture and further reduces weight.
  • the suspension can be threaded particularly easy in the first eyelet.
  • the first eyelet is equipped as an oblong hole whose longer extension extends in the direction of the transverse axis and preferably amounts to 2 to 8 times the height of the oblong hole or the diameter of the second eyelet measured perpendicular to the transverse axis.
  • the slot is designed as oval, but with a continuous curvature having a radius in the region of the highest point, which is significantly greater than the radius in the region of the largest extension of the slot, surprisingly achieves the advantage that a greater homogenization in the strands is given.
  • the first eyelet and / or the second eyelets have chamfers.
  • the dimensioning of the chamfers can be adapted to the connecting members / elements used, so that the wear on the eyelets and the connecting members / elements is reduced and the life of the main body and the connecting members / elements is extended.
  • the wear can also be reduced by the fact that the body is made of a reimbursable material.
  • the heat-treatable material particularly a steel, can be provided with increased hardness, thereby reducing wear in use.
  • the base body comprise wear sleeves, which can be inserted in the first and / or the second eyelets.
  • wear sleeves which can be inserted in the first and / or the second eyelets.
  • the use of such sleeves has the advantage that the body is protected from wear. You can easily replace the sleeves when the maximum wear is exceeded without the entire body has to be replaced. The life of the body can thus be increased significantly and the operating costs are reduced.
  • the sleeves may preferably be made of a different material than the body, for example, a particularly wear-resistant material. As a result, the wear can be significantly reduced without the entire body must be made of the wear-resistant material. Since only the sleeves from the are made of wear-resistant material, more expensive materials can be used without the total cost of the balance rocker disproportionately increase.
  • Fig. 1 shows a balance rocker 10 2 , which has a base body 12 with a longitudinal axis A of lying on the longitudinal axis A first eye 14 and two lateral lugs 16 thereto.
  • the two second eyelets 16 each have a center M.
  • the first eyelet 14 has a wall 18 and, with respect to the longitudinal axis A, a highest point L (which is actually a line due to the thickness of the rocker, in the plan view of FIG Fig. 1 but appears as a point) located at a vertical distance from the center M of the second lugs 16 (measured along the longitudinal axis A of the body 12).
  • the second eyelets 16 form with the first eyelet 14 a position angle ß w , which is defined by a first leg S 1 and a second leg S 2 .
  • the first leg S 1 extends in each case through the center M of the second eyelet 16 and through the highest point L of the first eyelet 14, while the second leg S 2 extends from the longitudinal axis A (in FIG Fig. 1 the vertical) is formed.
  • the second leg S 2 is drawn as a parallel B to the longitudinal axis A.
  • a suspension means not shown in detail 20 is connected via the first eyelet 14 to the base body 12, wherein the suspension means 20 engages at its free end with a ring, not shown, or a similar component through the first eyelet 14, whereby rotation of the balance rocker 10 2 order the first eyelet 14 is made possible.
  • the suspension means 20 hangs the balance rocker at the point L of the eye, so that the point L represents the Momentalpol at the beginning of rotation of the balance rocker.
  • the suspension means 20 may comprise a chain strand, that is, a number of interlocking chain links. Alternatively, rods, rings, straps, textile lifting straps or ropes o. ⁇ . Be used.
  • At the second eyelets 16 is in each case a chain strand 22 or another strand of a stop means fastened, which includes with the vertical an inclination angle ß n when a load is struck.
  • the difference between the position angle ß w and the inclination angle ß n indicates the extent to which the balance rocker can rotate 10 2 maximum and allows quantification of the compensation potential, the differences in length or the load between the strands, the second eyelet 16 are fixed, evened.
  • the main body 12 is constructed symmetrically to the longitudinal axis A and to a transverse axis Q, so that the centers M of both the first lug 14 and the second lugs 16 intersect the transverse axis Q.
  • the first eyelet 14 is designed as a slot 26 and the position angle ß w is about 80 °, the inclination angle ß n1 and the inclination angle ß n2 60 °. Consequently, the difference between the orientation angle ß w and the inclination angle ß n amounts to 35 ° and between the ply angle ß w and the inclination angle ß n2 at 20 °, so that the compensation potential is high.
  • the balance rocker 10 2 is shown in the worn state.
  • the wear points of the first eyelet 14 and the second eyelets 16 are marked with arrows P.
  • the balance rocker 10 2 is shown folded over the transverse axis Q. Due to the symmetrical design of the main body 12 with respect to the transverse axis Q, it is possible to provide two wear points per umse by turning over, without the force flows within the main body 12 being substantially changed. If at the first wear point, the maximum allowable wear is reached, the base body 12 is turned by 180 ° about the transverse axis Q, so that the main body 12 can be used again until the maximum wear is reached at the second wear point. It should be noted at this point that the specified angles always refer to the non-worn state of the body or the balance rocker.
  • FIG. 4 Another embodiment of the compensating rocker 10 4 shows Fig. 4 ,
  • the compensating rocker 10 4 differs from the previously described compensating rocker substantially by the first eyelet 14. This is at least at the respect to the longitudinal axis of the Fig. 4
  • the curvature radius of the curve 27 is significantly greater than the radius of the cross section of the hanging in the first loop 14 hanger 30th
  • the pivot point of the rocker is lowered below the center of the second eyelets.
  • the fulcrum is now at the point 28.
  • a further improved compensation effect is achieved, and yet a symmetrical about the transverse axis structure of the compensating rocker 10 4 can be achieved, which has the advantages mentioned life.
  • In the deflected state becomes achieved by the point of 28 lowered pivot point an improved balancing effect of the balance rocker 10 4 .
  • each described compensating rocker has a number of sleeves 28, which can be inserted into the first and the second loops 14, 16 and which optionally can also have the chamfers 24.
  • the sleeves 28 can be replaced when the maximum allowable wear is exceeded.
  • the sleeves 28 can in the construction of the Fig. 1-4 be used.

Claims (9)

  1. Bascule d'équilibrage pour un moyen de butée, comprenant deux ou plus de deux brins (22), la bascule d'équilibrage (10) présentant un corps de base (12) avec un axe longitudinal, qui coïncide avec la verticale lorsque la bascule d'équilibrage (10) n'est pas déviée, le corps de base comprenant :
    - un premier oeillet (14) pour la fixation du corps de base (12) à un moyen d'accrochage (20), et
    - deux ou plus de deux oeillets (16) à chaque fois pour l'accrochage de l'un des brins (22) du moyen de butée, les deuxièmes oeillets (16) présentant à chaque fois un centre (M) et formant à chaque fois un angle de position (βw) avec le premier oeillet (14), dont la première branche (S1) est formée par connexion du centre (M) du deuxième oeillet (16) et au point (L) du premier oeillet (14) le plus élevé par rapport à l'axe longitudinal (A) et dont la deuxième branche (S2) est formée par l'axe longitudinal (A),
    - l'angle de position (βw) étant compris entre 65° et 100°,
    caractérisée en ce que
    - le corps de base (12) présente un axe transversal (Q) s'étendant perpendiculairement à l'axe longitudinal (A), et est symétrique par rapport à l'axe transversal (Q), les centres (M) des deuxièmes oeillets (16) étant situés sur une droite comprenant un centre du premier oeillet (14), la bascule d'équilibrage pouvant être utilisée dans deux états d'inversion différents autour de l'axe transversal (Q).
  2. Bascule d'équilibrage selon la revendication 1, caractérisée en ce que l'angle de position (βw) est de préférence compris entre 70° et 90°.
  3. Bascule d'équilibrage selon la revendication 1 ou 2, caractérisée en ce que le premier oeillet (14) est configuré sous forme de trou oblong (26).
  4. Bascule d'équilibrage selon l'une quelconque des revendications précédentes, caractérisée en ce que les deuxièmes oeillets (16) sont espacés de l'axe longitudinal (A) d'une distance qui est inférieure à 10 fois l'étendue, de préférence qui est inférieure à 6 fois, ou 5 fois, l'étendue de l'un des deuxièmes oeillets (16) perpendiculairement à l'axe longitudinal (A).
  5. Bascule d'équilibrage selon l'une quelconque des revendications précédentes, caractérisée par des douilles d'usure (28) qui peuvent être enfichées dans les premiers et/ou les deuxièmes oeillets (14, 16).
  6. Bascule d'équilibrage selon la revendication 5, caractérisée en ce que les douilles d'usure (28) se composent d'un autre matériau, de préférence plus dur, que le corps de base (12).
  7. Bascule d'équilibrage selon l'une quelconque des revendications précédentes, caractérisée en ce que le premier oeillet (14) présente, dans la région du point le plus supérieur (L), un rayon de courbure qui est au moins 4 fois, de préférence au moins 8 fois plus grand que le rayon de courbure du deuxième oeillet (16).
  8. Bascule d'équilibrage selon l'une quelconque des revendications précédentes, caractérisée en ce que le premier oeillet (14) est réalisé sous la forme d'un trou oblong s'étendant dans la direction de l'axe transversal, dont la longueur le long de l'axe transversal vaut 4 à 8 fois la hauteur perpendiculairement à l'axe transversal ou dont l'étendue le long de l'axe transversale correspond à 2 à 8 fois le diamètre du deuxième oeillet (16).
  9. Organe de suspension à chaîne comprenant une bascule d'équilibrage selon l'une quelconque des revendications précédentes et des brins (22) du moyen de butée, pouvant être accrochés aux deuxièmes oeillets, de préférence des chaînes de charge accrochées de même longueur.
EP13713406.0A 2013-03-25 2013-03-25 Bras oscillant pour un moyen d'accrochage mult-brins Active EP2978705B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/056307 WO2014154243A1 (fr) 2013-03-25 2013-03-25 Tête d'équilibrage pour élingue à plusieurs brins

Publications (2)

Publication Number Publication Date
EP2978705A1 EP2978705A1 (fr) 2016-02-03
EP2978705B1 true EP2978705B1 (fr) 2017-03-15

Family

ID=48044766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13713406.0A Active EP2978705B1 (fr) 2013-03-25 2013-03-25 Bras oscillant pour un moyen d'accrochage mult-brins

Country Status (2)

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EP (1) EP2978705B1 (fr)
WO (1) WO2014154243A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1441710A (en) * 1920-08-02 1923-01-09 Parker Howard Bars for use in moving rolls of paper
US2213718A (en) * 1938-04-21 1940-09-03 Bethlehem Steel Corp Lifting and conveying apparatus
US2721757A (en) * 1952-03-06 1955-10-25 Boeing Co Cargo sling
JPS5120087Y2 (fr) * 1971-09-13 1976-05-26
ZM11972A1 (en) * 1971-12-01 1973-04-24 Parsons Chain Co Ltd Improvements in hooks for slings
DE2261163C2 (de) * 1972-12-12 1983-06-23 Rud-Kettenfabrik Rieger & Dietz Gmbh U. Co, 7080 Aalen Kettengehänge
JPS5528419Y2 (fr) * 1976-09-06 1980-07-07
DE2819986C2 (de) * 1978-05-08 1983-10-27 Fa. August Thiele, 5860 Iserlohn Hebe- und Transportgeschirr mit Ausgleichswippe, insbesondere zur Verwendung mit Ketten-Anschlaggeschirren und mit Hebebandanordnungen
AT385966B (de) * 1983-05-04 1988-06-10 Erlau Ag Eisen Drahtwerk Vorrichtung zum transport von guetern
US4767099A (en) * 1987-05-18 1988-08-30 Munks R Leonard Hoist system
DE69611669T2 (de) * 1996-04-16 2001-06-28 Topal Ind S A Saint Priest Hebebalken
US8544923B2 (en) * 2008-09-29 2013-10-01 Engineered Lifting Technologies, Inc. Lifting assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2978705A1 (fr) 2016-02-03
WO2014154243A1 (fr) 2014-10-02

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