EP0008563A1 - Loading sling for heavy rocks - Google Patents

Loading sling for heavy rocks Download PDF

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Publication number
EP0008563A1
EP0008563A1 EP79710003A EP79710003A EP0008563A1 EP 0008563 A1 EP0008563 A1 EP 0008563A1 EP 79710003 A EP79710003 A EP 79710003A EP 79710003 A EP79710003 A EP 79710003A EP 0008563 A1 EP0008563 A1 EP 0008563A1
Authority
EP
European Patent Office
Prior art keywords
ropes
loading
rock
rope
eyelet
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Withdrawn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
EP79710003A
Other languages
German (de)
French (fr)
Inventor
Paul Schmahl
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.)
Basalt AG
Original Assignee
Basalt AG
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 Basalt AG filed Critical Basalt AG
Publication of EP0008563A1 publication Critical patent/EP0008563A1/en
Withdrawn legal-status Critical Current

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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
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets

Definitions

  • the invention relates to a loading harness for heavy rocks with three ropes starting from a central eyelet and having hangers at their free ends.
  • Loading harnesses of this type with three ropes firmly attached to the central eyelet have proven their worth when loading general cargo of all kinds; they result in a statically determined suspension, whereby a uniform loading of the three ropes can be ensured by a favorable choice of the attachment points of the towing device on the piece goods.
  • Loading harnesses with four ropes firmly attached to a central eyelet are also known for loading piece goods, which, because of its shape, are more suitable for four-point suspension.
  • four-point suspensions are statically overdetermined with the consequence that all four ropes only come into play if the arrangement of the fastening points on the load is matched to the rope lengths with an accuracy corresponding to the rope elasticity.
  • the object of the invention is therefore to create a loading harness with which heavy rocks, the weight of which is only slightly below the load capacity of the available crane, can be handled particularly safely.
  • the task is, based on a loading harness of the type described above, achieved according to the invention in that one of the three ropes is at least approximately twice as long as the other two ropes, is guided over a rope pulley attached to the central eyelet and at both ends with a hitch is provided.
  • the loading tackle according to the invention enables a statically determined four-point suspension since the rope running over the rope pulley always adjusts itself so that its two hitching devices take up the same load shares.
  • each hitch has a hook that has a leg designed for insertion into a borehole in the rock to be loaded.
  • the attachments show lines also preferably each have an eyelet attached to the relevant rope end, into each of which one of the hooks can be hung.
  • the loading harness shown has the task of reliably connecting a rock 10 to a hoist, in particular a heavy-duty crane.
  • the loading tableware includes a hook eye 12 which can be hooked into a crane hook or the like (not shown) and is connected to a central eye 16 by a rope 14.
  • a rope 14 At the central eyelet 16, two ropes 18 and 20 are attached, each carrying an eyelet 22 and 24 at their free end.
  • a cable 30 is guided over the cable pulley 28 and is approximately twice as long as each of the two cables 18 and 20.
  • a further eyelet 32 or 34 is attached.
  • each of the eyelets 22, 24, 32 and 34 there is a hook 36 which has a longer leg 38 and a shorter leg 40 bent at right angles thereto.
  • the hooks 36 are inserted with its longer leg 38 into a horizontal borehole 42 in the rock 10 and held there at least by friction. If necessary, the legs 38 can be additionally fastened in the boreholes 42 with a special mortar based on synthetic cement. In this case, the hooks 36 can remain as lost components of the loading tackle in the rock 10 if it has been sunk, for example, to reinforce a dike or other coastal protection structure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

In loading gear for heavy pieces (10) of rock having three ropes (18, 20, 30) which come from a central eye (16) and have attachment devices at their free ends, one (30) of the three ropes (18, 20, 30) is at least approximately twice as long as the two other ropes (18, 20). This one rope (30) is run over a rope pulley (28) attached to the central eye (16) and is provided at each of the two ends with an attachment device. The load of a piece (10) of rock hanging on the loading gear is thereby distributed substantially uniformly over the three ropes. Each attachment device consists of a hook (36) having a leg (38) designed for inserting into a drill hole (42) in the piece (10) of rock to be loaded and of an eye (22, 24, 32, 34) which is fastened to the relevant rope end and into which one each of the hooks (36) can be put.

Description

Die Erfindung betrifft ein Verladegeschirr für schwere Gesteinsbrocken mit drei von einer zentralen öse ausgehenden Seilen, die an ihren freien Enden Anhängevorrichtungen aufweisen.The invention relates to a loading harness for heavy rocks with three ropes starting from a central eyelet and having hangers at their free ends.

Verladegeschirre dieser Art mit drei an der zentralen öse fest angehängten Seilen haben sich beim Verladen von Stückgut der verschiedensten Art bewährt; sie ergeben eine statisch bestimmte Aufhängung, wobei durch günstige Wahl der Befestigungspunkte der Anhängevorrichtung am Stückgut für eine gleichmäßige Belastung der drei Seile gesorgt werden kann. Zum Verladen von Stückgut, das sich wegen seiner Form besser für eine Vierpunktaufhängung eignet, sind auch Verladegeschirre mit vier an einer zentralen Öse fest angehängten Seilen bekannt. Solche Vierpunktaufhängungen sind jedoch statisch überbestimmt mit der Folge, daß nur dann alle vier Seile zum Tragen kommen, wenn die Anordnung der Befestigungspunkte an der Last mit einer der Seilelastizität entsprechenden Genauigkeit auf die Seillängen abgestimmt ist. Diese Forderung läßt sich bei industriell hergestellten Stückgütern, beispielsweise Betonfertigteilen, ohne erheblichen Aufwand mit hinreichender Genauigkeit erfüllen, nicht aber bei groben Gesteinsbrocken, beispielsweise aus Basalt, die sich für den Küstenschutz in besonders stark beanspruchten Deichabschnitten eignen. Solche Steine werden bisher üblicherweise mit mehrarmigen Greifvorrichtungen, sogenannten Polypen, verladen. Der Verwendung solcher Vorrichtungen zum Verladen besonders schwerer Gesteinsbrocken mit einem Gewicht in der Größenordnung von bis zu 10 t steht jedoch entgegen, daß für solche Lasten geeignete Polypen ein Eigengewicht in der Größenordnung von 4 bis 5 t haben, so daß das Gesamtgewicht von Polyp und Nutzlast die Tragkraft der zur Verfügung stehenden Kräne im allgemeinen übersteigt.Loading harnesses of this type with three ropes firmly attached to the central eyelet have proven their worth when loading general cargo of all kinds; they result in a statically determined suspension, whereby a uniform loading of the three ropes can be ensured by a favorable choice of the attachment points of the towing device on the piece goods. Loading harnesses with four ropes firmly attached to a central eyelet are also known for loading piece goods, which, because of its shape, are more suitable for four-point suspension. However, such four-point suspensions are statically overdetermined with the consequence that all four ropes only come into play if the arrangement of the fastening points on the load is matched to the rope lengths with an accuracy corresponding to the rope elasticity. This requirement can be met with sufficient accuracy in the case of industrially produced piece goods, for example precast concrete parts, but not in the case of coarse boulders, for example made of basalt, which are suitable for coastal protection in particularly heavily used dike sections. Up to now, such stones have usually been loaded with multi-armed gripping devices, so-called polyps. However, the use of such devices for loading particularly heavy rocks with a weight of the order of up to 10 t stands in the way that polyps suitable for such loads have a weight of the order of 4 to 5 t, so that the total weight of the polyp and payload the load capacity of the available cranes generally exceeds.

Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Verladegeschirr zu schaffen, mit dem sich schwere Gesteinsbrocken, deren Gewicht nur wenig unter der Tragkraft des zur Verfügung stehenden Krans liegt, besonders sicher handhaben lassen.The object of the invention is therefore to create a loading harness with which heavy rocks, the weight of which is only slightly below the load capacity of the available crane, can be handled particularly safely.

Die Aufgabe ist, ausgehend von einem Verladegeschirr der eingangs beschriebenen Gattung, erfindungsgemäß dadurch gelöst, daß eines der drei Seile zumindest annähernd doppeltsolang wie die beiden übrigen Seile ist, über eine an die zentrale öse angehängte Seilrolle geführt ist und an beiden Enden mit je einer Anhängevorrichtung versehen ist.The task is, based on a loading harness of the type described above, achieved according to the invention in that one of the three ropes is at least approximately twice as long as the other two ropes, is guided over a rope pulley attached to the central eyelet and at both ends with a hitch is provided.

Das erfindungsgemäße Verladegeschirr ermöglicht eine statisch bestimmte Vierpunktaufhängung, da das über die Seilrolle laufende Seil sich stets so einstellt, daß seine beiden Anhängevorrichtungen gleiche Lastanteile aufnehmen.The loading tackle according to the invention enables a statically determined four-point suspension since the rope running over the rope pulley always adjusts itself so that its two hitching devices take up the same load shares.

Bei einer bevorzugten Ausführungsform der Erfindung weist jede Anhängevorrichtung einen Haken auf, der einen zum Einstecken in ein Bohrloch in dem zu verladenden Gesteinsbrocken ausgebildeten Schenkel hat. Dabei weisen die Anhängevorrichtungen ferner vorzugsweise je eine am betreffenden Seilende befestigte öse auf, in die je einer der Haken einhängbar ist.In a preferred embodiment of the invention, each hitch has a hook that has a leg designed for insertion into a borehole in the rock to be loaded. The attachments show lines also preferably each have an eyelet attached to the relevant rope end, into each of which one of the hooks can be hung.

Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand einer schematischen Zeichnung näher erläutert.An embodiment of the invention is explained in more detail below with reference to a schematic drawing.

Es zeigt:

  • Fig. 1 ein erfindungsgemäßes Verladegeschirr, dessen Bestandteile sämtlich in einer gemeinsamen Ebene ausgebreitet sind;
  • Fig. 2 das Verladegeschirr beim Anheben eines Gesteinsbrockens in Seitenansicht; und
  • Fig. 3 die zugehörige Draufsicht.
It shows:
  • F ig. 1 an inventive loading harness, the components of which are all spread out in a common plane;
  • F ig. 2 the loading tableware when lifting a rock in side view; and
  • Fig. 3 shows the associated top view.

Das dargestellte Verladegeschirr hat die Aufgabe, einen Gesteinsbrocken 10 zuverlässig mit einem Hebezeug, insbesondere einem Schwerlastkran, zu verbinden. Zu dem Verladegeschirr gehört eine Hakenöse 12, die sich in einen nicht dargestellten Kranhaken od. dgl. einhängen läßt und durch ein Seil 14 mit einer zentralen Öse 16 verbunden ist. An der zentralen öse 16 sind zwei Seile 18 und 20 befestigt, die an ihrem freien Ende je eine Öse 22 bzw. 24 tragen. In die zentrale Öse 16 ist ferner ein Schäkel 26 eingehängt, an dem eine Seilrolle 28 gelagert ist. über die Seilrolle 28 ist ein Seil 30 geführt, das etwa doppelt so lang ist wie jedes der beiden Seile 18 und 20. An den beiden Enden des Seils 30 ist je eine weitere Öse 32 bzw. 34 befestigt.The loading harness shown has the task of reliably connecting a rock 10 to a hoist, in particular a heavy-duty crane. The loading tableware includes a hook eye 12 which can be hooked into a crane hook or the like (not shown) and is connected to a central eye 16 by a rope 14. At the central eyelet 16, two ropes 18 and 20 are attached, each carrying an eyelet 22 and 24 at their free end. A shackle 26, on which a cable pulley 28 is mounted, is also suspended in the central eyelet 16. A cable 30 is guided over the cable pulley 28 and is approximately twice as long as each of the two cables 18 and 20. At the two ends of the cable 30, a further eyelet 32 or 34 is attached.

In jeder der ösen 22, 24, 32 und 34 steckt ein Haken 36, der einen längeren Schenkel 38 und einen im rechten Winkel dazu umgebogenen kürzeren Schenkel 40 aufweist. Die Haken 36 sind mit ihrem längeren Schenkel 38 in je ein waagerechtes Bohrloch 42 im Gesteinsbrocken 10 eingesetzt und darin zumindest durch Reibung festgehalten. Nötigenfalls können die Schenkel 38 in den Bohrlöchern 42 mit einem Spezialmörtel auf Kunstzementbasis zusätzlich befestigt werden. In diesem Fall können die Haken 36 als verlorene Bestandteile des Verladegeschirrs im Gesteinsbrocken 10 verbleiben, wenn dieser beispielsweise zur Verstärkung eines Deichs oder anderen Küstenschutzbauwerks versenkt worden ist.In each of the eyelets 22, 24, 32 and 34 there is a hook 36 which has a longer leg 38 and a shorter leg 40 bent at right angles thereto. The hooks 36 are inserted with its longer leg 38 into a horizontal borehole 42 in the rock 10 and held there at least by friction. If necessary, the legs 38 can be additionally fastened in the boreholes 42 with a special mortar based on synthetic cement. In this case, the hooks 36 can remain as lost components of the loading tackle in the rock 10 if it has been sunk, for example, to reinforce a dike or other coastal protection structure.

Claims (3)

1. Verladegeschirr für schwere Gesteinsbrocken mit drei von einer zentralen öse ausgehenden Seilen, die an ihren freien Enden Anhängevorrichtungen aufweisen, dadurch gekennzeichnet , daß eines (30) der drei Seile (18,20,30) zumindest annähernd doppeltsolang wie die beiden übrigen Seile (18,20) ist, über eine an die zentrale öse (16) angehängte Seilrolle (28) geführt ist und an beiden Enden mit je einer Anhängevorrichtung versehen ist.1. Loading harness for heavy rocks with three ropes starting from a central eyelet and having hitching devices at their free ends, characterized in that one (30) of the three ropes (18, 20, 30) is at least approximately twice as long as the other two ropes ( 18, 20) is guided over a rope pulley (28) attached to the central eyelet (16) and is provided with a hitch at each end. 2. Verladegeschirr nach Anspruch 1, dadurch gekennzeichnet , daß jede Anhängevorrichtung einen Haken (36) aufweist, der einen zum Einstecken in ein Bohrloch (42) in dem zu verladenden Gesteinsbrocken (10) ausgebildeten Schenkel (38) hat.2. Loading tableware according to claim 1, characterized in that each hitch has a hook (36) which has a leg (38) formed for insertion into a borehole (42) in the rock (10) to be loaded. 3. Verladegeschirr nach Anspruch 2, dadurch gekennzeichnet , daß die Anhängevorrichtungen je eine am betreffenden Seilende befestigte Öse (22,24,32,34) aufweisen, in die je einer der Haken (36) einhängbar ist.3. Loading harness according to claim 2, characterized in that the hitching devices each have an eyelet (22, 24, 32, 34) attached to the relevant rope end, into each of which one of the hooks (36) can be suspended.
EP79710003A 1978-08-24 1979-08-14 Loading sling for heavy rocks Withdrawn EP0008563A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19787825248U DE7825248U1 (en) 1978-08-24 1978-08-24 LOADING HARNESS FOR HEAVY ROCK
DE7825248U 1978-08-24

Publications (1)

Publication Number Publication Date
EP0008563A1 true EP0008563A1 (en) 1980-03-05

Family

ID=6694520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79710003A Withdrawn EP0008563A1 (en) 1978-08-24 1979-08-14 Loading sling for heavy rocks

Country Status (4)

Country Link
EP (1) EP0008563A1 (en)
DE (1) DE7825248U1 (en)
FI (1) FI792631A (en)
NO (1) NO792733L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107117526A (en) * 2017-06-26 2017-09-01 淮南矿业(集团)有限责任公司 The mobile device and its moving method of casing elevator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD82197A (en) *
FR1480382A (en) * 1966-04-01 1967-05-12 Lifting method and device
DE1964863U (en) * 1967-04-29 1967-07-27 Pfeiffer Fa Ed LIFTING EQUIPMENT.
DD105594A1 (en) * 1973-05-25 1974-05-05
DE2261163A1 (en) * 1972-12-12 1974-06-20 Rud Ketten Rieger & Dietz HANGING
US3837697A (en) * 1972-12-18 1974-09-24 D Goodrich Adjustable multi-leg load-carrying sling apparatus
US4019770A (en) * 1975-02-03 1977-04-26 Varitrac A.G. Hoisting hook assembly and method for hoisting a load

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD82197A (en) *
FR1480382A (en) * 1966-04-01 1967-05-12 Lifting method and device
DE1964863U (en) * 1967-04-29 1967-07-27 Pfeiffer Fa Ed LIFTING EQUIPMENT.
DE2261163A1 (en) * 1972-12-12 1974-06-20 Rud Ketten Rieger & Dietz HANGING
US3837697A (en) * 1972-12-18 1974-09-24 D Goodrich Adjustable multi-leg load-carrying sling apparatus
DD105594A1 (en) * 1973-05-25 1974-05-05
US4019770A (en) * 1975-02-03 1977-04-26 Varitrac A.G. Hoisting hook assembly and method for hoisting a load

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107117526A (en) * 2017-06-26 2017-09-01 淮南矿业(集团)有限责任公司 The mobile device and its moving method of casing elevator

Also Published As

Publication number Publication date
NO792733L (en) 1980-02-26
DE7825248U1 (en) 1978-12-07
FI792631A (en) 1980-02-25

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Effective date: 19801218

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Inventor name: SCHMAHL, PAUL