EP0492669B1 - Load suspension arrangement - Google Patents
Load suspension arrangement Download PDFInfo
- Publication number
- EP0492669B1 EP0492669B1 EP91122332A EP91122332A EP0492669B1 EP 0492669 B1 EP0492669 B1 EP 0492669B1 EP 91122332 A EP91122332 A EP 91122332A EP 91122332 A EP91122332 A EP 91122332A EP 0492669 B1 EP0492669 B1 EP 0492669B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- load
- cross member
- hydraulic
- hooks
- hydraulic system
- 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
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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 load suspension device, consisting of a crossbar, load hook and a self-contained hydraulic system arranged between the load hook and the crossbar, which consists of hydraulic pistons, hydraulic cylinders and these interconnecting compensating lines, the load hooks via the hydraulic system on the Support the traverse.
- This balancing rocker is designed as a gas forged part with two support arms pointing outwards from the upper stop eye, which are directed obliquely downwards and form the fork heads, to each of which a lifting strap is fastened via suitable connecting and supporting elements as a support means, in which as a stop for the lifting load, a load hook is attached in each case.
- This known lifting and transporting harness has the disadvantage that the length difference of the lifting straps can only be compensated in pairs when lifting, so that an uneven load distribution due to the other pair of straps cannot be excluded. This occurs particularly when heavy goods of considerable length and different load distribution are to be lifted and transported.
- the use of lifting belts is therefore limited to applications that guarantee an even load distribution.
- a load suspension device with uniform load distribution of the type mentioned is known.
- the load hooks are each attached to an extension of hydraulic pistons, the associated cylinders of which are attached to a traverse by means of bolts suspended in a swivel eye.
- a disadvantage of this known load-bearing device is that only a rod which is relatively thin compared to the piston diameter can be used as a suspension element, so that a large ring surface is available for large tensile forces. This limits the resilience of the facility.
- the invention is based on the object of improving a load-bearing device of the type mentioned in such a way that a more robust connection of the lifting means to the traverse via the hydraulic system is achieved, thereby avoiding must be that if the hydraulic system fails, the load hook with the load accidentally falls.
- the load hooks are movable with respect to the crossbar along a guide which is effective in the upward and downward direction of the load hooks and is provided on the crossbar and that the load hooks are held captively on the guide.
- the hydraulic system is preferably arranged in the interior of the box-profile-like traverse, as a result of which it is protected against damage.
- the hydraulic cylinder should be fastened to the crossmember and the load hook should load the hydraulic piston under pressure.
- the weight of the load hook is not loaded by the hydraulic system, but in turn loads the hydraulic system via the hydraulic piston.
- the load-bearing device has load hooks which enclose the crossmember with their front and rear hook plates. This enables a simple guiding of the load hook in the crossbeam and a simple construction.
- the hook plates are connected to one another by a connector running above the crossbar, the load hooks are held captively on the crossbar. This prevents the hydraulic system from failing Load hook falls from the crossbar.
- the invention is not limited to solutions in which tapes are used as slings.
- the invention can also be implemented with other slings such as endless ropes, hook holders, hook ropes, eyelet ropes, crane hooks or ring holders, the list of aforementioned slinging devices not making any claim to completeness. In this case, only the load hook supported on the crossbar has to be adapted to the selected lifting gear.
- the load-bearing device according to the invention shown in FIG. 1 consists of a cross-section 1 in the form of a box profile, to which a plurality of load hooks 2 arranged symmetrically to the stop eye 3 are each suspended within a guide 4.
- the load hook 2 encloses with its front and rear hook plates 5 and 6 the crossbar 1 in a form-fitting manner.
- the two hook plates 5 and 6 are connected to one another by means of a connector 7 above the cross member 1.
- the connector 7 strikes the crossmember 1 and thus prevents the load hook 2 from falling down.
- the connector 7 carries the hydraulic piston 8, which is supported in the hydraulic cylinder 9 on the hydraulic fluid.
- the hydraulic cylinder 9 is located inside the box profile of the crossmember 1.
- An upper and lower support plate 10 and 11 holds the hydraulic cylinder 9 in a defined position so that the hydraulic piston 8 can be immersed in the hydraulic cylinder 9.
- Each hydraulic cylinder 9 has a nipple 12 for connecting a compensating line 13 which connects the hydraulic cylinders 9 to one another in the interior of the box section of the crossmember 1.
- Hydraulic pistons 8, hydraulic cylinders 9 together with the compensating line 13 form a self-contained hydraulic system 14 which, in accordance with the loads introduced on the load hooks 2, leads to pressure equalization, which ensures an even load distribution over the entire suspension system.
- a hook opening 15 with tines 16 is incorporated into which the lifting belt 17 can be hung.
- the slipping out of the lifting belt 17 prevents a safety trap 18 fastened to the hook plates 5 and 6.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Lastaufnahmeeinrichtung, bestehend aus einer Traverse, Lasthaken und einen in sich geschlossenen, zwischen den Lasthaken und der Traverse angeordneten Hydrauliksystem, welches aus Hydraulikkolben, Hydraulikzylindern und diese untereinander verbindenden Ausgleichsleitungen besteht, wobei sich die Lasthaken über das Hydrauliksystem an der Traverse abstützen.The invention relates to a load suspension device, consisting of a crossbar, load hook and a self-contained hydraulic system arranged between the load hook and the crossbar, which consists of hydraulic pistons, hydraulic cylinders and these interconnecting compensating lines, the load hooks via the hydraulic system on the Support the traverse.
Unfallverhütungsvorschriften für Lastaufnahmeeinrichtungen im Hebezeugbetrieb bestimmen, daß die mehrsträngigen Gehängen die Last gleichmäßig auf alle Stränge verteilt sein muß, wenn dieses als tragend angenommen werden. Eine ungleiche Lastverteilung auf die Stränge tritt immer dann auf, wenn die Last nicht genügend flexibel oder eine Ausgleichseinrichtung nicht vorhanden ist. Aus der DE-PS 28 19 986 ist ein Hebe- und Transportgeschirr bekannt, das als Ausgleichseinrichtung eine Ausgleichswippe mit Hebelandanordnung verwendet. Diese Ausgleichswippe ist als Gasenkschmiedeteil mit zwei vom oberen Anschlagauge nach außen weisenden Tragarmen ausgebildet, die schräg nach unten gerichtet sind und die Gabelköpfe bilden, an denen über geeignete Verbindungs- und Tragelemente als Tragmittel jeweils ein Hebegurt befestigt ist, in den als Anschlag für die zu hebende Last jeweils ein Lasthaken eingehängt ist.Accident prevention regulations for load suspension devices in hoist operation stipulate that the multi-leg slings, the load must be evenly distributed over all strands if these are assumed to be load-bearing. An uneven load distribution on the strands always occurs when the load is not flexible enough or a compensation device is not available. From DE-PS 28 19 986 a lifting and transporting harness is known which uses a balancing rocker with lifting land arrangement as a compensating device. This balancing rocker is designed as a gas forged part with two support arms pointing outwards from the upper stop eye, which are directed obliquely downwards and form the fork heads, to each of which a lifting strap is fastened via suitable connecting and supporting elements as a support means, in which as a stop for the lifting load, a load hook is attached in each case.
Diesem bekannten Hebe- und Transportgeschirr haftet der Nachteil an, daß sich die Längendifferenz der Hebegurte beim Anheben nur jeweils paarweise ausgleichen läßt, so daß eine ungleiche Lastverteilung bewogen auf das jeweils andere Gurtpaar nicht ausschließbar ist. Dies tritt besonders dann auf, wenn Schwergut erheblicher Länge und unterschiedlicher Lastverteilung gehoben und transportiert werden soll. Die Verwendung von Hebegurten bleibt daher auf Einsatzfälle beschränkt, die eine gleichmäßige Lastverteilung garantieren.This known lifting and transporting harness has the disadvantage that the length difference of the lifting straps can only be compensated in pairs when lifting, so that an uneven load distribution due to the other pair of straps cannot be excluded. This occurs particularly when heavy goods of considerable length and different load distribution are to be lifted and transported. The use of lifting belts is therefore limited to applications that guarantee an even load distribution.
Die Anordnung mehrerer dieser Ausgleichswippen nebeneinander zur gleichmäßigen Lastverteilung erhöht den Aufwand und verteuert das Hebe- und Transportgeschirr. Außerdem ist das Einhängen für den Bedienenden schwer und problematisch, müssen doch die Wippen über die Traversenlänge untereinander abgestimmt sein. Ein derartiges Hebegeschirr bedarf einer Ständigen Kontrolle, um Unfälle infolge unsachgemäßer Handhabung zu vermeiden.The arrangement of several of these balancing rockers next to each other for even load distribution increases the effort and increases the cost of lifting and transporting equipment. In addition, the hooking in is difficult and problematic for the operator, since the rockers must be coordinated with each other over the length of the truss. Such lifting gear needs constant control to avoid accidents due to improper handling.
Aus der DD-PS 49 988 ist eine Lastaufnahmeeinrichtung mit gleichmäßiger Lastverteilung der eingangs genannten Art bekannt. Die Lasthaken sind jeweils an einer Verlängerung von Hydraulikkolben angebracht, deren zugehörige Zylinder an einer Traverse mittels in ein Schwenkauge eingehängter Bolzen pendelnd befestigt sind. Durch die Verbindung der aus den Zylindern und Kolben jeweils gebildeten Hydraulikeinheiten über Zwei Verbindungsleitungen mit Entlüftung miteinander wird in allen Aufhängepunkten annähernd die gleiche Kraft beim Anschlagen einer Last erreicht. Nachteilig ist bei dieser bekannten Lastaufnahmeeinrichtung, daß als Tragmittel nur eine gegenüber dem Kolbendurchmesser verhältnismäßig dünne Stange eingesetzt werden kann, damit für große Zugkräfte viel Ringfläche zur Verfügung steht. Dadurch ist die Belastbarkeit der Einrichtung eingeschränkt. Darüberhinaus entstehen an den Angriffspunkten der Arbeitszylinder und damit auch an den Zylinderkolben der bekannten Lastaufnahmeeinrichtung Kräfteverteilungen, die Scherkomponenten aufweisen. Diese können leicht zu einem Bruch der Hydraulikkolben führen, wodurch die anhängende Last unbeabsichtigt herunterfallen würde. Außerdem ist bei der bekannten Einrichtung von Nachteil, daß die Kolbenstange abgedichtet werden muß und für den Rückzug äußere Kräfte, wie Gegenzylinder, erforderlich sind. Auch der Einsatz von zwei voneinander getrennten Verbindungsleitungen des Hydrauliksystems und in der Anordnung einer Entlüftungseinrichtung ist ein vermehrter konstruktiver Aufwand zu sehen.From DD-PS 49 988 a load suspension device with uniform load distribution of the type mentioned is known. The load hooks are each attached to an extension of hydraulic pistons, the associated cylinders of which are attached to a traverse by means of bolts suspended in a swivel eye. By connecting the hydraulic units formed from the cylinders and pistons to each other via two connecting lines with ventilation, approximately the same force is achieved in all suspension points when a load is attached. A disadvantage of this known load-bearing device is that only a rod which is relatively thin compared to the piston diameter can be used as a suspension element, so that a large ring surface is available for large tensile forces. This limits the resilience of the facility. In addition, force distributions, which have shear components, arise at the points of application of the working cylinders and thus also at the cylinder pistons of the known load suspension device. These can easily break the hydraulic pistons, causing the attached load to drop unintentionally. It is also disadvantageous in the known device that the piston rod must be sealed and external forces, such as counter cylinders, are required for the withdrawal. The use of two separate connecting lines of the hydraulic system and the arrangement of a ventilation device can also be seen as an increased design effort.
Ausgehend von dem voranstehend erörterten, in der DD-PS 49 988 beschriebenen Standes der Technik liegt der Erfindung die Aufgabe zugrunde, eine Lastaufnahmeeinrichtung der eingangsgenannten Art dahingehend zu verbessern, daß eine robustere Verbindung der Anschlagmittel mit der Traverse über das Hydrauliksystem erreicht wird, wobei vermieden werden muß, daß bei einem Versagen des Hydrauliksystems der Lasthaken mit der Last unbeabsichtigt herunterfällt.Based on the above-discussed prior art described in DD-PS 49 988, the invention is based on the object of improving a load-bearing device of the type mentioned in such a way that a more robust connection of the lifting means to the traverse via the hydraulic system is achieved, thereby avoiding must be that if the hydraulic system fails, the load hook with the load accidentally falls.
Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, daß die Lasthaken gegenüber der Traverse entlang einer in Auf- bzw. Abwärtsrichtung der Lasthaken wirksamen, an der Traverse vorgesehenen Führung beweglich sind und daß die Lasthaken an der Führung unverlierbar gehalten sind.To achieve this object, it is proposed according to the invention that the load hooks are movable with respect to the crossbar along a guide which is effective in the upward and downward direction of the load hooks and is provided on the crossbar and that the load hooks are held captively on the guide.
Bevorzugt ist das Hydrauliksystem im Inneren der kastenprofilartigen Traverse angeordnet, wodurch es vor Beschädigungen geschützt ist.The hydraulic system is preferably arranged in the interior of the box-profile-like traverse, as a result of which it is protected against damage.
Gemäß einer bevorzugten Ausgestaltung der erfindungsgemäßen Lastaufnahmeeinrichtung soll der Hydraulikzylinder an der Traverse befestigt sein und der Lasthaken den Hydraulikkolben auf Druck belasten. Bei dieser Anordnung wird der Lasthaken durch das Hydrauliksystem gewichtsmäßig nicht belastet, sondern belastet seinerseits das Hydrauliksystem über den Hydraulikkolben. Das hat gegenüber der aus der DD-PS 49 988 bekannten Einrichtung den Vorteil, daß der Durchmesser des Hydraulikkolbens größer gewählt werden kann und daß in Verbindung mit der Führung des Lasthakens keine Scherkräfte in das Hydrauliksystem eingeleitet werden, wenn an den Lasthaken eine Last angehängt wird.According to a preferred embodiment of the load-bearing device according to the invention, the hydraulic cylinder should be fastened to the crossmember and the load hook should load the hydraulic piston under pressure. In this arrangement, the weight of the load hook is not loaded by the hydraulic system, but in turn loads the hydraulic system via the hydraulic piston. This has the advantage over the device known from DD-PS 49 988 that the diameter of the hydraulic piston can be chosen larger and that in connection with the guidance of the load hook no shear forces are introduced into the hydraulic system when a load is attached to the load hook .
Gemäß einer bevorzugten Ausgestaltung weist die erfindungsgemäße Lastaufnahmeeinrichtung Lasthaken auf, die mit ihren vorderen und hinteren Hakenblech die Traverse umschließen. Hiedurch wird eine günstige Führungsmöglichkeit des Lasthakens in der Traverse eine einfache bauliche Ausführung ermöglicht.According to a preferred embodiment, the load-bearing device according to the invention has load hooks which enclose the crossmember with their front and rear hook plates. This enables a simple guiding of the load hook in the crossbeam and a simple construction.
Wenn gemäß einer weiteren bevorzugten Ausgestaltung der Erfindung die Hakenbleche durch einen oberhalb der Traverse verlaufenden Verbinder miteinander verbunden sind, wird zudem eine unverlierbare Halterung der Lasthaken an der Traverse erreicht. Dadurch wird verhindert, daß bei einem Versagen des Hydrauliksystems der Lasthaken von der Traverse herunterfällt.If, according to a further preferred embodiment of the invention, the hook plates are connected to one another by a connector running above the crossbar, the load hooks are held captively on the crossbar. This prevents the hydraulic system from failing Load hook falls from the crossbar.
Die Erfindung ist allerdings nicht auf Lösungen beschränkt, bei denen Bänder als Anschlagmittel eingesetzt werden. Die Erfindung läßt sich auch mit anderen Anschlagmitteln wie Endlosseile, Hakenhaltern, Hakenseile, Ösenseile, Kranhaken oder Ringhaltern verwirklichen, wobei die Aufzählung vorgenannter Anschlagmittel keinen Anspruch auf Vollständigkeit erhebt. In diesem Fall ist lediglich der sich auf der Traverse abstützende Lasthaken an das gewählte Anschlagmittel anzupassen.However, the invention is not limited to solutions in which tapes are used as slings. The invention can also be implemented with other slings such as endless ropes, hook holders, hook ropes, eyelet ropes, crane hooks or ring holders, the list of aforementioned slinging devices not making any claim to completeness. In this case, only the load hook supported on the crossbar has to be adapted to the selected lifting gear.
Im folgenden wird die Erfindung anhand einer Zeichnung näher erläutert. Im einzelnen zeigen:
Figur 1- - eine erfindungsgemäße Lastaufnahmeeinrichtung in Vorderansicht und
Figur 2- - die Lasthakenausbildung in Vorderansicht.
- Figure 1
- - A load suspension device according to the invention in front view
- Figure 2
- - The load hook training in front view.
Die in Figur 1 dargestellte erfindungsgemäße Lastaufnahmeeinrichtung besteht aus einer kastenprofilartigen Traverse 1, an der mehrere zum Anschlagauge 3 symmetrisch angeordnete Lasthaken 2 jeweils innerhalb einer Führung 4 eingehängt sind. Der Lasthaken 2 umschließt mit seinem vorderen und hinteren Hakenblech 5 und 6 die Traverse 1 formschlüssig. Die beiden Hakenbleche 5 und 6 sind mittels Verbinder 7 oberhalb der Traverse 1 miteinander verbunden. Der Verbinder 7 schlägt bei einem Ausfall des Hydrauliksystems auf die Traverse 1 und verhindert so das Herunterfallen des Lasthakens 2. Der Verbinder 7 trägt den Hydraulikkolben 8, der sich im Hydraulikzylinder 9 auf der Hydraulikflüssigkeit abstützt. Der Hydraulikzylinder 9 befindet sich im Inneren des Kastenprofils der Traverse 1.The load-bearing device according to the invention shown in FIG. 1 consists of a
Ein oberes und unteres Stützblech 10 und 11 hält den Hydraulikzylinder 9 in definierter Stellung, damit der Hydraulikkolben 8 in den Hydraulikzylinder 9 eintauchen kann.An upper and
Jeder Hydraulikzylinder 9 besitzt einen Nippel 12 zum Anschluß einer Ausgleichsleitung 13, die im Inneren des Kastenprofils der Traverse 1 die Hydraulikzylinder 9 miteinander verbindet. Hydraulikkolben 8, Hydraulikzylinder 9 bilden zusammen mit der Ausgleichsleitung 13 ein in sich geschlossenes Hydrauliksystem 14, das entsprechend den an den Lasthaken 2 eingebrachten Lasten zu einem Druckausgleich führt, der eine gleichmäßige Lastverteilung über den gesamten Gehängeverbund sichert.Each
In dem unteren Teil des vorderen und hinteren Hakenbleches 5 und 6 ist eine Hakenöffnung 15 mit Zinken 16 eingearbeitet, in die der Hebegurt 17 einhängbar ist. Das Herausgleiten des Hebegurtes 17 verhindert jeweils einen an den Hakenblechen 5 und 6 befestigte Sicherheitsfalle 18.In the lower part of the front and
Aufstellung der verwendeten Bezugszeichen:
- 1
- - Traverse
- 2
- - Lasthaken
- 3
- - Anschlagauge
- 4
- - Führung
- 5
- - vorderes Hakenblech
- 6
- - hinteres Hakenblech
- 7
- - Verbinder
- 8
- - Hydraulikkolben
- 9
- - Hydraulikzylinder
- 10
- - oberes Stützblech
- 11
- - unteres Stützblech
- 12
- - Nippel
- 13
- - Ausgleichsleitung
- 14
- - Hydrauliksystem
- 15
- - Hakenöffnung
- 16
- - Zinken
- 17
- - Hebegurt
- 18
- - Sicherheitsfalle
- 1
- - traverse
- 2nd
- - load hook
- 3rd
- - stop eye
- 4th
- - leadership
- 5
- - front hook plate
- 6
- - rear hook plate
- 7
- - Interconnects
- 8th
- - hydraulic pistons
- 9
- - hydraulic cylinder
- 10th
- - upper gusset
- 11
- - lower support plate
- 12th
- - nipples
- 13
- - compensation line
- 14
- - hydraulic system
- 15
- - hook opening
- 16
- - tines
- 17th
- - sling
- 18th
- - security trap
Claims (5)
- A load suspension arrangement, comprising a cross member (1), load hooks (2) and a self-contained hydraulic system (14) which is disposed between the load hooks (2) and the cross member (1) and comprises hydraulic pistons (8), hydraulic cylinders (9) and compensating lines (13) connecting said pistons and cylinders to one another, the load hooks (2) bearing via the hydraulic system (14) against the cross member (1), characterized in that the load hooks (2) can move in relation to the cross member (1) along a guide (4) which is provided on the cross member (1) and is operative in the upward and downward direction of the load hooks (2), and the load hooks (2) are retained captive on the guide (4).
- A load suspension arrangement according to claims 1 and 2, characterized in that the hydraulic system (14) is disposed in the interior of the box-section-like cross member (1).
- A load suspension arrangement according to claims 1 or 2, characterized in that the hydraulic cylinder (9) is attached to the cross member (1) and the load hook (2) subjects the hydraulic system (8) to compressive stressing.
- A load suspension arrangement according to claims 1, 2 or 3, characterized in that the load hooks (2) enclose the cross member (1) by their front hook plates (5) and rear hook plates (6) respectively.
- A load suspension arrangement according to claim 4, characterized in that the hook plates (5) and (6) are connected to one another via a connecting member (7) extending above the cross member (1) and are retained captive on the cross member (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4042110 | 1990-12-28 | ||
| DE4042110A DE4042110C1 (en) | 1990-12-28 | 1990-12-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0492669A2 EP0492669A2 (en) | 1992-07-01 |
| EP0492669A3 EP0492669A3 (en) | 1993-03-10 |
| EP0492669B1 true EP0492669B1 (en) | 1996-03-13 |
Family
ID=6421622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91122332A Expired - Lifetime EP0492669B1 (en) | 1990-12-28 | 1991-12-27 | Load suspension arrangement |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0492669B1 (en) |
| AT (1) | ATE135326T1 (en) |
| DE (1) | DE4042110C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022111218A1 (en) * | 2021-07-05 | 2022-06-02 | 中铁上海工程局集团有限公司 | Pile casing hoisting arm |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2732322B1 (en) * | 1995-03-27 | 1997-05-30 | Lamy Jean Pierre | HANGING DEVICE FOR HANDLING FLEXIBLE CONTAINERS |
| CN110255356A (en) * | 2019-04-25 | 2019-09-20 | 惠生（南通）重工有限公司 | A kind of combined hanging row for super long type piping lane land module hoisting |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD49988A (en) * | ||||
| DE900917C (en) * | 1938-09-30 | 1954-01-04 | Wilhelm Ludowici Dr Ing | Support frame |
| FR2038505A6 (en) * | 1969-03-18 | 1971-01-08 | Maurios Basile | |
| DE2819986C2 (en) * | 1978-05-08 | 1983-10-27 | Fa. August Thiele, 5860 Iserlohn | Lifting and transport gear with compensating rocker, in particular for use with chain sling harnesses and with lifting strap arrangements |
| EP0090061A1 (en) * | 1982-03-27 | 1983-10-05 | Johannes Emmerich | Method and device to turn or to manipulate assymmetrical workpieces |
-
1990
- 1990-12-28 DE DE4042110A patent/DE4042110C1/de not_active Expired - Lifetime
-
1991
- 1991-12-27 EP EP91122332A patent/EP0492669B1/en not_active Expired - Lifetime
- 1991-12-27 AT AT91122332T patent/ATE135326T1/en not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| 'LEICHTES HANDHABEN GROSSER WERKST]CKE' * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022111218A1 (en) * | 2021-07-05 | 2022-06-02 | 中铁上海工程局集团有限公司 | Pile casing hoisting arm |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0492669A2 (en) | 1992-07-01 |
| ATE135326T1 (en) | 1996-03-15 |
| EP0492669A3 (en) | 1993-03-10 |
| DE4042110C1 (en) | 1992-03-12 |
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