EP2088113A2 - Combined lifting device for people and loads - Google Patents
Combined lifting device for people and loads Download PDFInfo
- Publication number
- EP2088113A2 EP2088113A2 EP09000621A EP09000621A EP2088113A2 EP 2088113 A2 EP2088113 A2 EP 2088113A2 EP 09000621 A EP09000621 A EP 09000621A EP 09000621 A EP09000621 A EP 09000621A EP 2088113 A2 EP2088113 A2 EP 2088113A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lifting device
- boom
- crane
- crane arm
- winch
- 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- Withdrawn
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B1/00—Devices for lowering persons from buildings or the like
- A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/16—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
Definitions
- the invention relates to a combined lifting device for persons and loads, consisting of mountable individual components with a winch and a fall arrester with designedhub worn (HSG-R) and with a rotatable crane column having an angle-adjustable at the upper end of the column head crane arm and a telescopic boom, in particular for personal security in shafts or the like and for the transport of loads without the change of the lifting device.
- HSG-R designed to mountable individual components with a winch and a fall arrester with designedhub worn by the column head crane arm and with a rotatable crane column having an angle-adjustable at the upper end of the column head crane arm and a telescopic boom, in particular for personal security in shafts or the like and for the transport of loads without the change of the lifting device.
- Lifting devices for personal security or for the transport of loads are generally portable lifting devices with a jib crane with a delivery device and with a support means in conjunction with a base member.
- One in the DE 4327919 A1 described lifting device can be stationed at different locations in a supply device to a respective stationary base element with a bearing plate.
- the slewing crane is portable and composed of assembled individual sections.
- the lightweight portable crane is designed for a maximum load of 1000 kg. If the jib crane consists of a single section, the load capacity is limited according to the weight and its construction. With a larger number of portable and mountable individual sections, the lifting capacity of the slewing crane can be increased. The problem is thus to design a slewing crane in lightweight construction such that the carrying capacity is as large as possible with a low transport cost of the individual components.
- the slewing crane after DE 4327919 A1 consists of individual portable and mountable sections with a swivel housing with the support rollers arranged thereon, a pull rod and a triangular arm with the telescopic boom, whose underside is designed as a hollow profile.
- the upper bar of the triangular jib like the drawbar, consists of parallel angular profiles or hollow sections.
- the telescopic boom is a square profile into which a second hollow profile can be inserted.
- a disadvantage is the production and assembly of the telescoping hollow sections, which are usually not available fitting. In addition, only a small weight saving can be achieved by two mating hollow sections.
- the lifting device can receive a belay device with a thoughthub observed for persons.
- the lifting device on a mobile support frame with at least three held on a common center footrests.
- a personal rescue device is provided, which can be disassembled if necessary.
- the additional personal rescue device increases the possible use of the lifting device.
- the crane device and the personal rescue device are arranged at a horizontal distance from each other to ensure trouble-free operation. The transport of persons is not allowed.
- a combined lifting device with a tripod for striking and supporting a personal safety device is proposed, which is easy to transport.
- the use of the lifting device is provided in manhole structures that are entered by persons. Manhole entrances to well chambers, pumping stations, water-bearing shafts and other subterranean structures are usually made by ladders. According to the current safety regulations, ladders longer than 3 m may only be used with fall protection. In sewage shafts must be provided because of the risk of lack of oxygen, carbon monoxide or fermentation gas to a notedhub issued.
- the invention aims a combined lifting device in lightweight construction, which is easily and effortlessly portable and suitable both for personal security for secure transport of persons and for the transport of loads without the change of the lifting device.
- the object is achieved by a lifting device with a rotatable crane column, wherein the angle-adjustable crane arm and the telescopic boom consists of two different sized profiles and the individual components are mounted by means of a connector to which a fall arrester with designedhub worn (HSG-R) and a for the passenger transport modified winch is arranged.
- the lifting device with a much smaller profile for the boom allows lightweight construction and easier transport and construction.
- Lifting device shown consists essentially of three individual components mountable with a rotatable crane column 1 and with a pivotally mounted on the upper end of the column head 2 crane arm 3, which has a telescopic boom 4.
- the individual components are assembled by means of plug connections.
- the crane column 1 is rotatably mounted in a bottom plate 5 with a pivot bearing about a vertical axis in a horizontal pivoting range of 360 °.
- the crane column 1 is tubular in cross-section and is inserted into a bearing sleeve 6 of the bottom plate 5. Above the bearing sleeve 6 is located to guide the crane column 1, a centering ring 7 with a handle, through which the penetration of water and dirt is prevented.
- the rotational movement of the crane column 1 is locked with a arranged in the amount of the centering ring 7 locking lever 8, which engages in a arranged on the bearing sleeve 6 locking plate 9 with recesses under the influence of gravity.
- the locking recesses are arranged in the circumferential direction at a distance of 45 °, so that the rotational movement of the crane column 1 can be locked in corresponding intervals.
- a fork-shaped column head 2 for receiving the angle-adjustable crane arm 3 is arranged.
- the crane arm 3 is provided at the designated location with a corresponding bore 11.
- the bore 11 is arranged in the rear third of the crane arm 3, so that the larger part is over the center of gravity also expansive.
- two tie rods 13 are hinged at the end with fixing bolts 14 which are fixedly connected to the crane column 1. By the tie rods 13 of the crane arm 3 is held in the angled position.
- the adjustment of the inclination of the crane arm 3 takes place with the pivot pin 12 in the column head 2, with the crane arm 3 is staked at different heights. Since the end pivot point of the crane arm 3 is fixedly connected to the crane column 1 via the tie rods 13, this is at different inclination of the crane arm 3 substantially always in the same altitude. As a result, the operation of the cranes 3 arranged winch 15 is facilitated. Otherwise, if the pivot point for adjusting the inclination of the crane arm 3 in the column head 2, the altitude of the winch 15 is constantly changing.
- the crane arm 3 consists of a commercially available preferably rectangular hollow profile or square profile, the end is partially closed with a support plate 16 for the winch 15 and the front side on the opposite end with a top plate 17 in the lower part of the opening.
- the top plate 17 is further formed in the lower portion as a stop means with an attachment point for a power-driven hoist.
- the telescopic boom 4 is a displaceable square profile.
- the square profile of the boom 4 has a much smaller dimension than the square profile of the crane arm 3, resulting in a significant weight saving results.
- the smaller square profile of the boom 4 is favorable for a change in length, because the boom 4 can be easily moved in the square profile of the crane arm 3.
- the boom 4 is thus also easily mountable by means of this connector.
- the head plate 17 of the crane arm 3 has a U-shaped cutout 21 which corresponds to the dimensions of the square profile of the boom 4.
- the boom 4 is therefore not guided directly in the inner wall of the square profile of the crane arm 3, but in the U - shaped cutout 21.
- a spacer plate 22 is the second The spacer plate 22 keeps the boom 4 at a distance from the square profile of the crane arm 3.
- the spacer plate 22 at the insertion end is arranged in the upper half of the opening of the boom 4 on projecting.
- the projection is dimensioned according to the internal dimensions of the square profile of the crane arm 3 such that the boom 4 can be easily moved with little play.
- the insertion of the boom 4 in the chamfer 18 is carried out by lifting the boom head 25 to the spacer plate 22 which is arranged on the upper inner edge of the crane arm 3 stop bar 19 is under attack. Thereafter, the boom 4 can be lowered and inserted into the square profile of the crane arm 3.
- Absteckbohronne 26 are provided near the top plate 17 of the crane arm 3 and on the length of the boom 4, which are staked with a Absteckbolzen 27.
- the extraction of the boom 4 is limited in the outermost position by the stop bar 19 so that it can not be accidentally pulled out.
- the complete removal of the boom 4 takes place in the reverse order of installation by the boom head 25 is raised.
- the arrangement of the spacer plate 22 has the additional advantage that the support load of the telescopic boom 4 is not derived via the Absteckbolzen 27 but on the spacer plate 22.
- the Absteckbolzen 27 is not loaded and has only a backup function.
- the Absteckbolzen 27 does not need to be specially designed as a wear part for this reason.
- the spacer plate 22 also causes the lateral guidance of the boom 4 in the square of the crane arm. 3
- the pulley axis 29 is secured with the cover plate 31.
- the pulley axis 29 has on both sides on the protruding from the boom head 25 side a circumferential groove 32 in the sheet thickness of the cover plate 31.
- the cover plate 31 is provided at the right angles bent sides with an inclined to the axis of the boom 4 extending oblique slot 33 which is inserted into the groove 32 of the pulley axis 29 obliquely from top to bottom.
- a securing bolt 34 is provided with a bolt lock 35 through which the cover plate 31 is immovably and secured to the boom 4 is connected.
- the cover plate 31 Due to the inclined arrangement of the oblique slot 33, the cover plate 31 can not be moved in this way and the pulley shaft 29 is securely fixed. At the same time the release of the cover plate 31 is technically easy to plug and without any screw possible. The ropes 23 are then free and can be removed from the pulleys 28.
- a conventional winch 15 with a drivable cylindrical winch drum 36 is used.
- Conventional winches are not suitable for passenger transport, because for winches for transporting persons a cable guide or pressing device and a winch drum 36 with a rope groove 40 is prescribed for the orderly winding of the cable turns. For this reason, a cable groove 40 for receiving the cable 23 is formed in the lateral surface of the winch drum 36.
- the winch 15 is driven by a hand crank via a not further shown worm gear and additionally has an automatically incident brake.
- the worm gear has due to the self-locking property an additional safety function in terms of blocking the direction of movement. This design allows for the transport of persons a sufficiently high level of security.
- the winch 15 is further modified so that it meets the safety requirements for suspended people receiving means.
- the winch drum 36 has a left pulley 37 and a right flange 38.
- the pulley 37 and the flanged wheel 38 are firmly welded in the embodiment with the winch drum 36.
- the winch drum 36 is modified so that the originally right sheave 37 is replaced by the flanged wheel 38.
- the winch drum 36 has a larger groove-free portion 39, so that the flange 38 at a greater distance from the right front side of Winch drum 36 can be mounted.
- the flanged wheel 38 has a rope passage 41 for the cable 23. The cable 23 is thus wound through the flanged wheel 38 on the groove-free portion 39 of the winch drum 36 with at least two cable turns and continued through the cable bore 43 in the direction of the axis.
- the end of the rope 23 is provided with an in FIG. 5 indicated rope clamp 42 attached to the winch drum 36.
- a winch 15 for passenger transport must be at least two turns on the winch drum 36 after unwinding of the cable 23. This is necessarily ensured by the modified winch 15.
- a fall arrester with designedhub sensible (HSG-R) 24 arranged for persons. This can be ensured without the change of the lifting device, a transport of loads or people.
- the proposed combined lifting device also allows the protection of persons in structures with climbing aid in addition to the transport of loads.
- a person can be lowered or lifted in shafts or on walls without climbing assistance including the fall arrester with rescue lifting device (HSG-R) 24.
- HSG-R fall arrester with rescue lifting device
- material transport can also be done with a power-driven hoist at the attachment point of the head plate 17.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Jib Cranes (AREA)
Abstract
Description
Die Erfindung betrifft eine kombinierte Hebeeinrichtung für Personen und Lasten, bestehend aus montierbaren Einzelkomponenten mit einer Seilwinde und einem Höhensicherungsgerät mit Rettungshubeinrichtung (HSG-R) sowie mit einer drehbaren Kransäule, die einen an dem oberen Ende des Säulenkopfes winkelverstellbaren Kranarm sowie einen teleskopierbaren Ausleger aufweist, insbesondere zur Personensicherung in Schächten oder dergleichen sowie zum Transport von Lasten ohne den Wechsel des Hubgerätes.The invention relates to a combined lifting device for persons and loads, consisting of mountable individual components with a winch and a fall arrester with Rettungshubeinrichtung (HSG-R) and with a rotatable crane column having an angle-adjustable at the upper end of the column head crane arm and a telescopic boom, in particular for personal security in shafts or the like and for the transport of loads without the change of the lifting device.
Hebeeinrichtungen zur Personensicherung oder zum Transport von Lasten sind in der Regel transportable Hubgeräte mit einem Schwenkkran mit einer Auslegevorrichtung und mit einem Tragemittel in Verbindung mit einem Basiselement. Eine in der
Der Schwenkkran nach
In der
In der
Die Erfindung bezweckt eine kombinierte Hebeeinrichtung in Leichtbauweise, die einfach sowie mühelos transportabel und sowohl zur Personensicherung zum gesicherten Transport von Personen als auch zum Transport von Lasten ohne den Wechsel des Hubgerätes geeignet ist.The invention aims a combined lifting device in lightweight construction, which is easily and effortlessly portable and suitable both for personal security for secure transport of persons and for the transport of loads without the change of the lifting device.
Erfindungsgemäß wird die Aufgabe durch eine Hebeeinrichtung mit einer drehbaren Kransäule gelöst, wobei der winkelverstellbare Kranarm sowie der teleskopierbare Ausleger aus zwei unterschiedlich großen Profilen besteht und die Einzelkomponenten mittels einer Steckverbindung montiert sind, an denen ein Höhensicherungsgerät mit Rettungshubeinrichtung (HSG-R) und eine für den Personentransport modifizierte Seilwinde angeordnet ist. Die Hebeeinrichtung mit einem wesentlich kleineren Profil für den Ausleger ermöglicht die Leichtbauweise und einen einfacheren Transport und Aufbau.According to the invention the object is achieved by a lifting device with a rotatable crane column, wherein the angle-adjustable crane arm and the telescopic boom consists of two different sized profiles and the individual components are mounted by means of a connector to which a fall arrester with Rettungshubeinrichtung (HSG-R) and a for the passenger transport modified winch is arranged. The lifting device with a much smaller profile for the boom allows lightweight construction and easier transport and construction.
Zusätzlich kann die Montage der Einzelkomponenten der Hebeeinrichtung durch Steckverbindungen vereinfacht werden, was im nachfolgenden weiter erläutert werden soll.In addition, the assembly of the individual components of the lifting device can be simplified by connectors, which will be further explained in the following.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnungen näher erläutert. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. Im Einzelnen zeigt
Figur 1- eine Zusammenstellungszeichnung der Hebeeinrichtung,
Figur 2- eine Übersichtsdarstellung der Einzelkomponenten der Hebeeinrichtung,
Figur 3- eine Einzelteilzeichnung mit dem Auslegerkopf des Auslegers nach
,Figur 2 Figur 4- einen Querschnitt durch die Windentrommel und
Figur 5- eine Seitenansicht der Windentrommel nach
mit der Bordscheibe in schematischer Darstellung.Figur 4
- FIG. 1
- an assembly drawing of the lifting device,
- FIG. 2
- an overview of the individual components of the lifting device,
- FIG. 3
- an item drawing with the boom head of the boom behind
FIG. 2 . - FIG. 4
- a cross section through the winch drum and
- FIG. 5
- a side view of the winch drum after
FIG. 4 with the flange in a schematic representation.
Die in
Die Drehbewegung der Kransäule 1 wird mit einem in Höhe des Zentrierringes 7 angeordneten Rasthebel 8 arretiert, der in eine an der Lagerhülse 6 angeordnete Rastscheibe 9 mit Rastausnehmungen unter Einfluss der Schwerkraft einrastet. Die Rastausnehmungen sind in Umfangsrichtung in einem Abstand von 45 ° angeordnet, damit die Drehbewegung der Kransäule 1 in dementsprechenden Abständen arretiert werden kann.The rotational movement of the
Am oberen Ende der Kransäule 1 ist ein gabelförmiger Säulenkopf 2 zur Aufnahme des winkelverstellbaren Kranarms 3 angeordnet. In dem Säulenkopf 2 befinden sich mehrere übereinander angeordnete Bohrungen 11 für die Aufnahme eines Schwenkbolzens 12, mit dem der Kranarm 3 in unterschiedlicher Höhe abgesteckt werden kann. Der Kranarm 3 ist an der dafür vorgesehenen Stelle mit einer korrespondierenden Bohrung 11 versehen. Mit dem Schwenkbolzen 12 ist der Kranarm 3 vertikal schwenkbar gelagert. Die Bohrung 11 ist in dem hinteren Drittel des Kranarms 3 angeordnet, damit der größere Teil über den Schwerpunkt hinaus ausladend ist. Um der Gewichtsverlagerung entgegenzuwirken sind endseitig zwei Zugstangen 13 mit Befestigungsbolzen 14 angelenkt, die mit der Kransäule 1 ortsfest verbunden sind. Durch die Zugstangen 13 wird der Kranarm 3 in der abgewinkelten Stellung gehalten.At the upper end of the
Das Einstellen der Neigung des Kranarmes 3 erfolgt mit dem Schwenkbolzen 12 in dem Säulenkopf 2, mit dem der Kranarm 3 in unterschiedlicher Höhe abgesteckt wird. Da der endseitige Schwenkpunkt des Kranarms 3 mit der Kransäule 1 über die Zugstangen 13 fest verbunden ist, befindet sich dieser bei unterschiedlicher Neigung des Kranarms 3 im Wesentlichen immer in der gleichen Höhenlage. Dadurch wird die Bedienung der am Kranarm 3 angeordneten Seilwinde 15 erleichtert. Anderenfalls, wenn sich der Schwenkpunkt für die Einstellung der Neigung des Kranarms 3 im Säulenkopf 2 befindet, wird die Höhenlage der Seilwinde 15 ständig verändert.The adjustment of the inclination of the
Der Kranarm 3 gemäß
Hierzu weist die Kopfplatte 17 des Kranarms 3 einen U - förmigen Ausschnitt 21 auf, der den Abmessungen des Vierkantprofils des Auslegers 4 entspricht. Der Ausleger 4 wird daher nicht unmittelbar in der Innenwandung des Vierkantprofils des Kranarms 3, sondern in dem U - förmigen Ausschnitt 21 geführt. Eine Distanzplatte 22 befindet sich als zweites Führungselement an dem Einsteckende des Auslegers 4. Die Distanzplatte 22 hält den Ausleger 4 innen auf Distanz zu dem Vierkantprofil des Kranarms 3. Die Distanzplatte 22 am Einsteckende ist in der oberen Hälfte der Öffnung des Auslegers 4 überstehend angeordnet. Der Überstand ist entsprechend den Innenabmessungen des Vierkantprofils des Kranarms 3 derart bemessen, dass sich der Ausleger 4 bei geringem Spiel leicht verschieben lässt.For this purpose, the
Das Einstecken des Auslegers 4 in die Abschrägung 18 erfolgt durch Anheben des Auslegerkopfes 25 bis mit der Distanzplatte 22 die an der oberen Innenkante des Kranarms 3 angeordnete Anschlagleiste 19 untergriffen wird. Danach kann der Ausleger 4 abgesenkt und in das Vierkantprofil des Kranarms 3 eingeschoben werden.The insertion of the
Zum Abstecken der Einschublänge sind Absteckbohrungen 26 nahe der Kopfplatte 17 des Kranarms 3 und auf der Länge des Auslegers 4 vorgesehen, die mit einem Absteckbolzen 27 abgesteckt werden. Das Herausziehen des Auslegers 4 wird in der äußersten Stellung durch die Anschlagleiste 19 begrenzt, damit dieser nicht unbeabsichtigt herausgezogen werden kann. Das vollständige Herausnehmen des Auslegers 4 erfolgt in der umgekehrten Reihenfolge wie beim Einbau, indem der Auslegerkopf 25 angehoben wird.For staking out the
Die Anordnung der Distanzplatte 22 hat darüber hinaus den Vorteil, dass die Stützlast des teleskopierbaren Auslegers 4 nicht über den Absteckbolzen 27 sondern über die Distanzplatte 22 abgeleitet wird. Der Absteckbolzen 27 wird nicht belastet und hat lediglich eine Sicherungsfunktion. Der Absteckbolzen 27 muss aus diesem Grund nicht speziell als ein Verschleißteil ausgebildet werden. Die Distanzplatte 22 bewirkt auch die seitliche Führung des Auslegers 4 in dem Vierkant des Kranarms 3.The arrangement of the
In dem in
Darüber hinaus wird mit dem Abdeckblech 31 die Seilrollenachse 29 gesichert. Die Seilrollenachse 29 weist beidseitig auf der aus dem Auslegerkopf 25 hervorstehenden Seite eine umlaufende Nut 32 in der Blechdicke des Abdeckblechs 31 auf. Das Abdeckblech 31 ist an den rechtwinklig abgebogenen Seiten mit einem geneigt zur Achse des Auslegers 4 verlaufenden Schrägschlitz 33 versehen, der in die Nut 32 der Seilrollenachse 29 schräg von oben nach unten eingeführt wird. Zum Festmachen des Abdeckblechs 31 ist ein Sicherungsbolzen 34 mit einer Bolzensicherung 35 vorgesehen, durch den das Abdeckblech 31 unverrückbar und gesichert mit dem Ausleger 4 verbunden ist. Durch die geneigte Anordnung des Schrägschlitzes 33 kann das Abdeckblech 31 auf diese Weise nicht mehr bewegt werden und die Seilrollenachse 29 ist sicher fixiert. Gleichzeitig ist das Lösen des Abdeckblechs 31 stecktechnisch leicht und ohne jegliche Schraubverbindung möglich. Die Seile 23 liegen dann frei und können von den Seilrollen 28 abgenommen werden.In addition, the
Für das Heben und Senken von Lasten wird nach
Nach
Das Ende des Seils 23 wird mit einer in
Claims (11)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200820001827 DE202008001827U1 (en) | 2008-02-08 | 2008-02-08 | Combined lifting device for persons and loads |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2088113A2 true EP2088113A2 (en) | 2009-08-12 |
EP2088113A3 EP2088113A3 (en) | 2011-10-26 |
Family
ID=39311715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09000621A Withdrawn EP2088113A3 (en) | 2008-02-08 | 2009-01-17 | Combined lifting device for people and loads |
Country Status (2)
Country | Link |
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EP (1) | EP2088113A3 (en) |
DE (1) | DE202008001827U1 (en) |
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Citations (3)
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DE4327919A1 (en) | 1992-08-21 | 1994-02-24 | Brockmann Gmbh | Portable, swivelling jib crane for maintenance of process plant, waterworks etc. - is transported to critical locations which are equipped with pedestals having bearing plate on which crane can be quickly and easily mounted. |
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DE4327919A1 (en) | 1992-08-21 | 1994-02-24 | Brockmann Gmbh | Portable, swivelling jib crane for maintenance of process plant, waterworks etc. - is transported to critical locations which are equipped with pedestals having bearing plate on which crane can be quickly and easily mounted. |
DE29723710U1 (en) | 1996-05-07 | 1999-01-28 | Josef Martin Metallverarbeitun | Lifting device |
DE202005015821U1 (en) | 2005-10-08 | 2006-01-19 | Brockmann, Heinrich | Installation to fix and support a personal safety device for use in a shaft has two poles whose lower ends can be fixed to rails on shaft access directly or using connecting part with variable horizontal gap between them |
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DE102017009291A1 (en) * | 2017-10-06 | 2019-04-11 | Senvion Gmbh | Winch mounting frame and winch assembly |
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AU2020104271B4 (en) * | 2020-12-23 | 2021-11-11 | Sayfa R&D Pty Ltd | A Davit Assembly |
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CN117049393A (en) * | 2023-08-15 | 2023-11-14 | 河南五建建设集团有限公司 | Adjusting device for hoisting prefabricated small box girder |
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Also Published As
Publication number | Publication date |
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DE202008001827U1 (en) | 2008-04-17 |
EP2088113A3 (en) | 2011-10-26 |
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