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EP0121767B1 - Screw-fastened lifting device - Google Patents

Screw-fastened lifting device Download PDF

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Publication number
EP0121767B1
EP0121767B1 EP84102388A EP84102388A EP0121767B1 EP 0121767 B1 EP0121767 B1 EP 0121767B1 EP 84102388 A EP84102388 A EP 84102388A EP 84102388 A EP84102388 A EP 84102388A EP 0121767 B1 EP0121767 B1 EP 0121767B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
screw
lifting device
connecting element
engagement
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
Application number
EP84102388A
Other languages
German (de)
French (fr)
Other versions
EP0121767A2 (en
EP0121767A3 (en
Inventor
Gottfried Hennig
Johann Dipl.-Ing. Wäger
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to AT84102388T priority Critical patent/ATE22270T1/en
Publication of EP0121767A2 publication Critical patent/EP0121767A2/en
Publication of EP0121767A3 publication Critical patent/EP0121767A3/en
Application granted granted Critical
Publication of EP0121767B1 publication Critical patent/EP0121767B1/en
Expired 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
    • B66C1/62—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 comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—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 comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
    • B66C1/666—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 comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof for connection to anchor inserts embedded in concrete structures

Definitions

  • lifting devices For positionally stable lifting and conveying of solid bodies, it is known to screw at least two lifting devices into abutments firmly embedded in the body and to bring them into engagement with releasable connecting links (shackles, hooks, rope loops) dependent on the hoist.
  • a simplest form of lifting devices is known from DE-V-7 820 646, Fig. 2 in the form of a cap screw, which is screwed into a threaded bush embedded and recessed in the body and is at a distance from the body with its screw head, thus between the screw head and body space remains for a connecting member encompassing the screw, which is only secured by the screw head and thus only insufficiently against lateral slipping.
  • Such eyebolts are special designs and each have an unchangeable position of their eyelets or brackets in the screwed-in state in relation to the pulling direction of the connecting links, so that undesirable additional mechanical stresses on the eyebolts and / or the connecting links can occur.
  • the eyelets or brackets for the direct attachment of hooks or shackles must be sized accordingly, or if the eyelets or brackets are too small, additional ropes must be threaded into these and formed from these figure-eight loops, into which the hooks or shackles can be hung.
  • a position adjustment of the eyelets or brackets of the eyebolts to the pulling direction of the connecting links is possible with multi-part lifting devices with rotatable and pivotable eyelets or brackets.
  • a lifting device is known with a supporting sleeve loosely penetrated by a cap screw, which has an inside semicircular groove for a self-contained eyelet, which is supported by an abutment loosely penetrated by the cap screw is locked, the abutment protruding over the eyelet and firmly against the body when the lifting device is screwed on.
  • These multi-part lifting devices required sleeves and eyelets that were matched to one another in terms of shape and size, and special tools and machines were required for their manufacture.
  • the same also applies to five-part lifting devices known from US-A-3 905 633, FIGS. 1 to 3 with rotatably and pivotably mounted U-shaped brackets which form a closed eyelet with their abutments.
  • a reinforced body 1 made of concrete of rectangular trough-like shape e.g. As a floor assembly of a housing, on a vehicle or for unloading the body at a remote location of the housing by means of a lifting device, the body 1 in the floor area 1A has cast-in threaded bushings 3 at several distributed locations and anchored to the reinforcement 2, which are flush with the Lock off the outer wall and serve to hold screwable lifting devices.
  • Each lifting device is formed in several parts from conventional elements and can therefore be easily manufactured if necessary at the charging point of the body.
  • a circular pressure disk 8 penetrated by the screw 4 for supporting a sleeve surrounding the screw 4 with a space serving as a support tube, and a sleeve penetrated by the screw 4 and transversely to the longitudinal axis of the screw over the sleeve 7 protruding securing part 6 is required for the connecting member 9, which is looped around the sleeve in the form of a rope loop and is prevented from slipping by the securing part 6.
  • the securing part 6 consists of a flat bar which projects beyond the cable loop 9 and projects beyond the end face of the sleeve 7 on both sides.
  • the screw head 4A engages directly or as shown via a washer 5 on the securing part 6 and, when screwing the screw 4 into the threaded bushing 3, presses the sleeve 7 firmly against the pressure disk 8 via the securing part 6, so that when the body 1 is raised and lowered, the Sleeve prevents bending stress of the screw 4, which is thus only exposed to shear stress.
  • the choice of the diameter and the length of the sleeve allows simple adaptation, for example to the rope diameter of the rope loop 9, and a sufficiently large radius of the loop is ensured with a corresponding sleeve diameter.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Transmission Devices (AREA)

Abstract

1. A multi-part lifting device which can be detachably brought into engagement with a connecting element (9) dependent from a lifting apparatus and which lifting device can be screwed to a solid body (1) to be transported, by a cap screw (4), in which the cap screw passes loosely through a pressure disc (8) which is supported on the body, a supporting sleeve (7) which is adjacent to said pressure disc, and a support (6) which is clamped between said sleeve and the screw head (4a) and holds all the parts together, characterized in that at its periphery, the sleeve (7) can be brought directly into engagement with the connecting element (9) and the support (6) is formed as a safety member for the connecting element which protrudes beyond the sleeve transversely to the longitudinal axis of the screw.

Description

Zum lagestabilen Anheben und Befördern von festen Körpern ist es bekannt, mindestens zwei Anhebevorrichtungen in im Körper fest eingebettete Widerlager einzuschrauben und mit hebezeugabhängigen lösbaren Verbindungsgliedern (Schäkel, Haken, Seilschlaufen) in Eingriff zu bringen. Eine einfachste Form von Anhebevorrichtungen ist aus dem DE-V-7 820 646, Fig. 2 in Gestalt einer Kopfschraube bekannt, die in eine im Körper fest und versenkt eingebettete Gewindebuchse eingeschraubt ist und mit ihrem Schraubenkopf einen Abstand vom Körper hat, damit zwischen Schraubenkopf und Körper Platz für ein die Schraube umgreifendes Verbindungsglied bleibt, das lediglich durch den Schraubenkopf und somit nur ungenügend gegen ein seitliches Abrutschen gesichert ist. Ausserdem wird der aus dem Körper herausragende Teil der Kopfschraube auf Biegung und Scherung beansprucht. Bei Verwendung von Seilschlaufen werden ausserdem wegen des relativ kleinen Durchmessers des Schraubenschaftes die Seilschlaufen entsprechend stark gebogen. Anstelle von einfachen Kopfschrauben können nach Fig. 3 des DE-U-7 820 646 auch mit geschlossenen, fest angeformten Ösen oder Bügeln versehene Ringschrauben vorgesehen sein, die jeweils bis zum Anschlag ihrer Bügel am Körper in die betreffenden Gewindebuchsen eingeschraubt sind. Ferner sind in dem DE-U-8 006 973 einteilige Ringschrauben mit zusätzlich angeformten Druckplatten erläutert. Solche Ringschrauben sind Spezialausführungen und weisen in fest eingeschraubtem Zustand jeweils eine unveränderliche Lage ihrer Ösen oder Bügel zur Zugrichtung der Verbindungsglieder auf, so dass unerwünschte mechanische Zusatzbeanspruchungen der Ringschrauben und/oder der Verbindungsglieder auftreten können. Ausserdem müssen die Ösen oder Bügel zum unmittelbaren Einhängen von Haken oder Schäkeln entsprechend gross bemessen sein oder es müssen bei zu kleinen Ösen oder Bügeln in diese zusätzliche Seile eingefädelt und aus diesen achterförmige Schlaufen gebildet werden, in die die Haken oder Schäkel eingehängt werden können.For positionally stable lifting and conveying of solid bodies, it is known to screw at least two lifting devices into abutments firmly embedded in the body and to bring them into engagement with releasable connecting links (shackles, hooks, rope loops) dependent on the hoist. A simplest form of lifting devices is known from DE-V-7 820 646, Fig. 2 in the form of a cap screw, which is screwed into a threaded bush embedded and recessed in the body and is at a distance from the body with its screw head, thus between the screw head and body space remains for a connecting member encompassing the screw, which is only secured by the screw head and thus only insufficiently against lateral slipping. In addition, the part of the head screw protruding from the body is subjected to bending and shearing. When using rope loops, the rope loops are bent correspondingly strongly because of the relatively small diameter of the screw shaft. Instead of simple cap screws, according to FIG. 3 of DE-U-7 820 646, eyebolts provided with closed, firmly formed eyelets or brackets can also be provided, each of which is screwed into the relevant threaded bushings until their brackets stop on the body. Furthermore, DE-U-8 006 973 explains one-piece eye bolts with additionally molded pressure plates. Such eyebolts are special designs and each have an unchangeable position of their eyelets or brackets in the screwed-in state in relation to the pulling direction of the connecting links, so that undesirable additional mechanical stresses on the eyebolts and / or the connecting links can occur. In addition, the eyelets or brackets for the direct attachment of hooks or shackles must be sized accordingly, or if the eyelets or brackets are too small, additional ropes must be threaded into these and formed from these figure-eight loops, into which the hooks or shackles can be hung.

Eine Lageanpassung der Ösen oder Bügel der Ringschrauben an die Zugrichtung der Verbindungsglieder ist mit mehrteiligen Anhebevorrichtungen mit dreh- und schwenkbaren Ösen oder Bügeln möglich. Aus der US-A-3 371 951, insbesondere Fig. 8 ist eine Anhebevorrichtung mit einer von einer Kopfschraube lose durchdrungenen tragenden Hülse bekannt, die eine innenseitige halbkreisförmige Rille für eine in sich geschlossene Öse aufweist, die von einem von der Kopfschraube lose durchdrungenen Widerlager abgesperrt ist, wobei das Widerlager über die Öse vorsteht und fest am Körper anliegt bei angeschraubter Anhebevorrichtung. Diese mehrteiligen Anhebevorrichtungen benötigten aufeinander in Form und Grösse abgestimmte Hülsen und Ösen, für deren Fertigung spezielle Werkzeuge und Maschinen erforderlich sind. Entsprechendes gilt auch für aus der US-A-3 905 633, Fig. 1 bis 3 bekannte fünfteilige Anhebevorrichtungen mit dreh- und schwenkbar gelagerten U-förmigen Bügeln, die mit ihren Widerlagern eine geschlossene Öse bilden.A position adjustment of the eyelets or brackets of the eyebolts to the pulling direction of the connecting links is possible with multi-part lifting devices with rotatable and pivotable eyelets or brackets. From US-A-3 371 951, in particular FIG. 8, a lifting device is known with a supporting sleeve loosely penetrated by a cap screw, which has an inside semicircular groove for a self-contained eyelet, which is supported by an abutment loosely penetrated by the cap screw is locked, the abutment protruding over the eyelet and firmly against the body when the lifting device is screwed on. These multi-part lifting devices required sleeves and eyelets that were matched to one another in terms of shape and size, and special tools and machines were required for their manufacture. The same also applies to five-part lifting devices known from US-A-3 905 633, FIGS. 1 to 3 with rotatably and pivotably mounted U-shaped brackets which form a closed eyelet with their abutments.

Ausgehend von einer mehrteiligen Anhebevorrichtung nach der US-A-3 371 951 gemäss dem Oberbegriff des Anspruchs 1 soll eine nur aus einfachen Teilen bestehende, leicht zusammensetzbare Anhebevorrichtung für beliebige Verbindungsglieder geschaffen werden, die gegebenenfalls als Wegwerfartikel behandelt werden kann und ein einfaches, sicheres und beliebig variierbares Koppeln über beliebige Verbindungsglieder mit einem Hebezeug ermöglicht.Starting from a multi-part lifting device according to US-A-3 371 951 according to the preamble of claim 1, an only simple parts, easily assembled lifting device for any connecting links is to be created, which can be treated as a disposable item and a simple, safe and Coupling can be varied as required using any connecting links with a hoist.

Die Lösung der gestellten Aufgabe gelingt auf besonders einfache Weise durch die Merkmale des kennzeichnenden Teils des Anspruches 1.The problem is solved in a particularly simple manner by the features of the characterizing part of claim 1.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und nachfolgend erläutert. Es zeigt:

  • Fig. 1 eine Anhebevorrichtung in der Bodengruppe eines Betonkörpers von vorne,
  • Fig. 2 den Gegenstand der Fig. 1 im Schnitt von der Seite.
An embodiment of the invention is shown in the drawing and explained below. It shows:
  • 1 is a lifting device in the bottom group of a concrete body from the front,
  • Fig. 2 shows the object of Fig. 1 in section from the side.

Zum Aufladen eines armierten Körpers 1 aus Beton von rechteckförmiger wannenartiger Gestalt, z.B. als Bodengruppe eines Gehäuses, auf ein Fahrzeug bzw. zum Abladen des Körpers an einem entfernten Aufstellungsort des Gehäuses mittels eines Hebezeuges weist der Körper 1 im Bodenbereich 1 A an mehreren verteilten Stellen eingegossene und mit der Armierung 2 verankerte Gewindebuchsen 3 auf, die bündig mit der Aussenwand abschliessen und zur Aufnahme von schraubbaren Anhebevorrichtungen dienen. Jede Anhebevorrichtung ist mehrteilig aus üblichen Elementen gebildet und kann demnach am Aufladeort des Körpers notfalls auf einfache Weise hergestellt werden. Hierzu werden für jede Anhebevorrichtung nur eine in die Gewindebuchse 3 einschraubbare Kopfschraube 4, insbesondere eine genormte Sechskantschraube, eine von der Schraube 4 durchdrungene kreisförmige Druckscheibe 8 zum Abstützen einer die Schraube 4 mit Zwischenraum umgebenden als Tragrohr dienende Hülse sowie ein von der Schraube 4 durchdrungenes und quer zur Schraubenlängsachse über die Hülse 7 vorstehendes Sicherungsteil 6 für das Verbindungsglied 9 benötigt, das in Form einer Seilschlaufe um die Hülse geschlungen ist und durch das Sicherungsteil 6 am Abrutschen gehindert wird. Das Sicherungsteil 6 besteht aus einem über die Seilschlaufe 9 hinausragenden flachen Riegel, der die Stirnseite der Hülse 7 beidseitig überragt. Der Schraubenkopf 4A greift unmittelbar oder wie gezeigt über eine Unterlegscheibe 5 am Sicherungsteil 6 an und presst beim Einschrauben der Schraube 4 in die Gewindebuchse 3 über das Sicherungsteil 6 die Hülse 7 fest gegen die Druckscheibe 8, so dass beim Heben und Senken des Körpers 1 die Hülse eine Biegebeanspruchung der Schraube 4 verhindert, die somit nur einer Scherbeanspruchung ausgesetzt wird.For loading a reinforced body 1 made of concrete of rectangular trough-like shape, e.g. As a floor assembly of a housing, on a vehicle or for unloading the body at a remote location of the housing by means of a lifting device, the body 1 in the floor area 1A has cast-in threaded bushings 3 at several distributed locations and anchored to the reinforcement 2, which are flush with the Lock off the outer wall and serve to hold screwable lifting devices. Each lifting device is formed in several parts from conventional elements and can therefore be easily manufactured if necessary at the charging point of the body. For this purpose, for each lifting device only one head screw 4, which can be screwed into the threaded bushing 3, in particular a standardized hexagon screw, a circular pressure disk 8 penetrated by the screw 4 for supporting a sleeve surrounding the screw 4 with a space serving as a support tube, and a sleeve penetrated by the screw 4 and transversely to the longitudinal axis of the screw over the sleeve 7 protruding securing part 6 is required for the connecting member 9, which is looped around the sleeve in the form of a rope loop and is prevented from slipping by the securing part 6. The securing part 6 consists of a flat bar which projects beyond the cable loop 9 and projects beyond the end face of the sleeve 7 on both sides. The screw head 4A engages directly or as shown via a washer 5 on the securing part 6 and, when screwing the screw 4 into the threaded bushing 3, presses the sleeve 7 firmly against the pressure disk 8 via the securing part 6, so that when the body 1 is raised and lowered, the Sleeve prevents bending stress of the screw 4, which is thus only exposed to shear stress.

Durch die Wahl des Durchmessers und der Länge der Hülse ist eine einfache Anpassung, beispielsweise an den Seildurchmesser der Seilschlaufe 9 möglich und bei entsprechendem Hülsendurchmesser wird ein ausreichend grosser Radius der Schlaufe gewährleistet.The choice of the diameter and the length of the sleeve allows simple adaptation, for example to the rope diameter of the rope loop 9, and a sufficiently large radius of the loop is ensured with a corresponding sleeve diameter.

Claims (3)

1. A multi-part lifting device which can be detachably brought into engagement with a connecting element (9) dependent from a lifting apparatus and which lifting device can be screwed to a solid body (1) to be transported, by a cap screw (4), in which the cap screw passes loosely through a pressure disc (8) which is supported on the body, a supporting sleeve (7) which is adjacent to said pressure disc, and a support (6) which is clamped between said sleve and the screw head (4a) and holds all the parts together, characterised in that at its periphery, the sleeve (7) can be brought directly into engagement with the connecting element (9) and the support (6) is formed as a safety member for the connecting element which protrudes beyond the sleeve transversely to the longitudinal axis of the screw.
2. A lifting device as claimed in Claim 1, characterised in that the safety member (6) consists of a flat bar which protrudes beyond the sleeve (7) on both sides.
3. A lifting device as claimed in Claim 1 and Claim 2, characterised in that the sleeve (7) is adapted to the connecting element (9) in respect of length and diameter.
EP84102388A 1983-03-16 1984-03-05 Screw-fastened lifting device Expired EP0121767B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102388T ATE22270T1 (en) 1983-03-16 1984-03-05 SCREWABLE LIFTING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19838307694U DE8307694U1 (en) 1983-03-16 1983-03-16 SCREWABLE LIFTING DEVICE
DE8307694U 1983-03-16

Publications (3)

Publication Number Publication Date
EP0121767A2 EP0121767A2 (en) 1984-10-17
EP0121767A3 EP0121767A3 (en) 1985-03-27
EP0121767B1 true EP0121767B1 (en) 1986-09-17

Family

ID=6751181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102388A Expired EP0121767B1 (en) 1983-03-16 1984-03-05 Screw-fastened lifting device

Country Status (3)

Country Link
EP (1) EP0121767B1 (en)
AT (1) ATE22270T1 (en)
DE (2) DE8307694U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8307694U1 (en) * 1983-03-16 1983-08-11 Siemens AG, 1000 Berlin und 8000 München SCREWABLE LIFTING DEVICE
DE4311757A1 (en) * 1993-04-08 1994-10-13 Halfen Gmbh & Co Kg Device for coupling a rope of a lifting device to a finished part

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371951A (en) * 1966-12-19 1968-03-05 John G. Bryant Material handling fittings
US3905633A (en) * 1974-09-30 1975-09-16 Caterpillar Tractor Co Swivel mounted lifting eye for engines
DE7820646U1 (en) * 1978-07-10 1978-10-19 Berndorfer, Hermann, 8860 Noerdlingen SPACE CELL, IN PARTICULAR PRE-FABRICATED GARAGE
DE8006973U1 (en) * 1980-03-14 1980-06-12 Fa. Friedrich Schroeder, 5982 Neuenrade RING SCREW
DE8307694U1 (en) * 1983-03-16 1983-08-11 Siemens AG, 1000 Berlin und 8000 München SCREWABLE LIFTING DEVICE

Also Published As

Publication number Publication date
ATE22270T1 (en) 1986-10-15
DE3460736D1 (en) 1986-10-23
DE8307694U1 (en) 1983-08-11
EP0121767A2 (en) 1984-10-17
EP0121767A3 (en) 1985-03-27

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