EP0384012B1 - Gantry crane - Google Patents
Gantry crane Download PDFInfo
- Publication number
- EP0384012B1 EP0384012B1 EP89121413A EP89121413A EP0384012B1 EP 0384012 B1 EP0384012 B1 EP 0384012B1 EP 89121413 A EP89121413 A EP 89121413A EP 89121413 A EP89121413 A EP 89121413A EP 0384012 B1 EP0384012 B1 EP 0384012B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- girder
- bridge
- loading
- support
- supports
- 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
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
Definitions
- the invention relates to a loading bridge with at least two bridge sockets, possibly mounted on undercarriages, a support designed as a smooth-walled, stiff tube construction with an essentially circular cross section and interacting with the bridge supports, and a device for loading and unloading goods.
- a crane girder with a closed girder profile is known, which is welded to both ends with an end plate.
- the carrier profile is formed by a U-profile which is open at the bottom and serves as an upper flange and by a shell which serves as a lower flange and has an approximately U-shaped cross section, the edges of which are welded to the flanges of the U-profile.
- a shell which serves as a lower flange and has an approximately U-shaped cross section, the edges of which are welded to the flanges of the U-profile.
- H-profile serving as the upper chord
- a shell serving as the lower chord and U-shaped in cross section.
- This crane girder is designed as an indoor crane, with undercarriages being provided in the area of the end disks or the pipe sections, which are supported on corresponding carriageways. Larger spans cannot be bridged with such a device without carrying out further structural measures.
- the trolley which can be moved on the carrier on rails, can also only move between the carriageways, which limits the possible uses. Furthermore, in this application, no further external forces, such as moments, torsion or the like, caused by the trolley occur in the carrier profile.
- a loading bridge is known with a bridge girder supported on bridge supports and a sliding girder slidably mounted with respect to this.
- the sliding beam is designed as a full-walled tube stiffened by transverse bulkheads and on its outer circumference by shells or box-shaped longitudinal straps, which is mounted in a bridge support designed as a solid-walled support tube stiffened by slow straps by means of straight guides. In the area of the support tube, guide rollers are provided so that the displacement carrier in its longitudinal direction can be moved.
- the bridge girder itself receives a conveyor belt for bulk material transport and is provided at one of its free ends with a loading device into which the conveyor belt feeds the bulk material.
- DE-PS 14 31 888 shows a crane bridge girder in a closed shell construction for internal trolleys.
- the crane bridge girder consists of an inner shell with an upper wall and two inner side walls, on which the rails for the trolley are mounted on both sides at the bottom inside and an outer shell adjoining the inner shell at the bottom having.
- FR-A 11 73 666 relates to a gantry crane whose bridge girder essentially has a cylindrical cross section, a longitudinal slot being provided at the bottom for the passage of the hoist rope of the trolley which can be moved inside the bridge girder.
- the bridge girder consists of an outer approximately cylindrical hollow body with a lower longitudinal slot and a known inner rectangular hollow body open at the bottom, the lower edges of which are fastened along the edges of the slot of the outer hollow body and consist of connecting elements between the two hollow bodies.
- the closed tube shape is abandoned and an additional box girder is introduced as a stiffening element within the tube provided with a longitudinal slot.
- the box girder which is open at the bottom, is connected to the tube via further stiffening elements in order to restore the stiffness of the slotted tube.
- the invention has for its object to develop a loading bridge described in the generic part of the first claim in such a way that a lightweight and therefore inexpensive construction is guaranteed.
- the welding and straightening work should be reduced to a minimum compared to the St.dT and the forces that occur should be dissipated without causing damage to adjacent components.
- the bridge supports and an overvoltage provided above the support are designed as a smooth-walled, stiff tube construction with an essentially circular cross-section, that the support is fixed to the bridge supports on the one hand and articulated on the other hand, and that the device is designed for loading and unloading as a trolley movable beneath the carrier.
- the suspended trolley is able to drive through both bridge supports, which means that better use of storage space can be ensured.
- Additional struts in the form of a truss disc are only provided for the fixed support in order to be able to better derive the forces from the support.
- the joint is provided directly at the tip of the pendulum support, which means that almost only compressive and tensile forces are introduced into the rods. The mass forces resulting from the moving of the trolley and the effects of wind are introduced into the main support tube via the pendulum-shaped hanger and released as torsion into the fixed support (truss disc).
- the main beam is between the track, i.e. H. spanned between the undercarriages of the bridge supports and held on the cantilever arm with at least one pull rod, which can drastically reduce the moments that occur.
- the pull rod preferably engages about halfway up the cantilever arm, with a good torque compensation in relation to the main beam being ensured when the trolley is moved in the region of the cantilever arm.
- the travel rails for the trolley can be arranged on the carrier in the same horizontal or vertical planes and on the carrier in different vertical planes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
Description
Die Erfindung betrifft eine Verladebrücke mit mindestens zwei, ggf. auf Fahrwerken gelagerten Brückenstutzen, einem als glattwandige steifenlose Rohrkonstruktion mit im wesentlichen kreisförmigem Querschnitt ausgebildeten mit den Brückenstützen zusammenwirkenden Träger sowie einer Einrichtung zum Be- und Entladen von Gütern.The invention relates to a loading bridge with at least two bridge sockets, possibly mounted on undercarriages, a support designed as a smooth-walled, stiff tube construction with an essentially circular cross section and interacting with the bridge supports, and a device for loading and unloading goods.
Durch die DE-OS 33 43 872 ist ein Kranträger mit einem geschlossenen Trägerprofil vorbekannt, das an beiden Ende mit je einer Endscheibe verschweißt ist. Das Trägerprofil wird durch ein als Obergurt dienendes nach unten offenes U-Profil und durch eine als Untergurt dienende, im Querschnitt etwa U-förmig gestaltete, Schale gebildet, deren Ränder mit den Flanschen des U-Profiles verschweißt sind. Alternativ besteht die Möglichkeil, das Tragerprofil durch ein als Obergurt dienendes H-Profil sowie durch eine als Untergurt dienende, im Querschnitt U-förmig gestaltete, Schale auszubilden. Ebenfalls möglich ist, das Trägerprofil durch einen Rohrabschnitt zu bilden, an dem zur lasteinleitung in der Längsrichtung wenigstens zwei Laufbahnprofile angeschweißt sind. Dieser Kranträger ist als Hallenkran ausgebildet, wobei im Bereich der Endscheiben bzw. der Rohrabschnitte Fahrwerke vorgesehen sind, die sich auf entsprechenden Fahrbahnen abstutzen. Größere Spannweiten sind mit einer solchen Einrichtung nicht überbrückbar, ohne weitere bauliche Maßnahmen durchzuführen. Die an den Träger auf Fahrschienen verfahrbare Laufkatze kann ebenfalls nur zwischen den Fahrbahnen verfahren, wodurch die Einsatzmöglichkeiten begrenzt werden. Ferner treten bei diesem Anwendungsfall keine weiteren durch die laufkatze hervorgerufenen äußeren Kräfte, wie Momente, Torsion oder dgl., im Trägerprofil auf.From DE-OS 33 43 872 a crane girder with a closed girder profile is known, which is welded to both ends with an end plate. The carrier profile is formed by a U-profile which is open at the bottom and serves as an upper flange and by a shell which serves as a lower flange and has an approximately U-shaped cross section, the edges of which are welded to the flanges of the U-profile. Alternatively, there is the possibility of forming the support profile by means of an H-profile serving as the upper chord and by means of a shell serving as the lower chord and U-shaped in cross section. It is also possible to form the support profile by means of a tube section, to which at least two raceway profiles are welded in the longitudinal direction for load introduction. This crane girder is designed as an indoor crane, with undercarriages being provided in the area of the end disks or the pipe sections, which are supported on corresponding carriageways. Larger spans cannot be bridged with such a device without carrying out further structural measures. The trolley, which can be moved on the carrier on rails, can also only move between the carriageways, which limits the possible uses. Furthermore, in this application, no further external forces, such as moments, torsion or the like, caused by the trolley occur in the carrier profile.
Durch die DE-PS 11 06 249 ist eine Verladebrücke mit einem auf Brückenstützen abgestützen Brückenträger und einem gegenüber diesem verschiebbar gelagerten Verschiebeträger bekannt. Der Verschiebeträger ist als vollwandiges, durch Querschotten und an seinem Außenumfang durch Schalen oder kastenförmige Langsgurte ausgesteiftes Rohr ausgebildet, das in einem als vollwandiges durch langsgurte ausgesteiftes Tragrohr ausgebildeten Brückenträger mittels Geradführungen längsverschiebbar gelagert ist. Im Bereich des Tragrohres sind Führungsrollen vorgesehen, damit der Verschiebeträger in seiner Längsrichtung verschoben werden kann. Der Brückenträger selber nimmt ein Förderband zum Schüttguttransport auf und ist an einem seiner freien Enden mit einer Beladeeinrichtung versehen, in welche das Förderband das Schüttgut aufgibt. Durch diese konstruktive Lösung wird eine Art Nut-Federsystem gebildet, wobei es einerseits verhältnismäßig aufwendig ist, die entsprechenden Profile sowohl an dem Tragrohr als auch am Verschiebeträger herzustellen und andererseits notwendige Wartungsarbeiten an den Lagerstellen vorzunehmen.From DE-PS 11 06 249 a loading bridge is known with a bridge girder supported on bridge supports and a sliding girder slidably mounted with respect to this. The sliding beam is designed as a full-walled tube stiffened by transverse bulkheads and on its outer circumference by shells or box-shaped longitudinal straps, which is mounted in a bridge support designed as a solid-walled support tube stiffened by slow straps by means of straight guides. In the area of the support tube, guide rollers are provided so that the displacement carrier in its longitudinal direction can be moved. The bridge girder itself receives a conveyor belt for bulk material transport and is provided at one of its free ends with a loading device into which the conveyor belt feeds the bulk material. This constructive solution forms a type of tongue and groove system, whereby on the one hand it is relatively complex to produce the corresponding profiles both on the support tube and on the sliding support and on the other hand to carry out the necessary maintenance work on the bearing points.
Ferner ist der DE-PS 14 31 888 ein Kranbrückenträger in geschlossener Schalenbauweise für innenlaufende Laufkatzen zu entnehmen. Der Kranbrückenträger besteht aus einer inneren Schale mit Oberwand und zwei inneren Seitenwänden, an denen beiderseits unten innen die Laufschienen für die Laufkatze gelagert sind sowie einer unten an die innere Schale anschließeiden äußeren Schale, die wenigstens im oberen Teil die Querschnittsform eines sich nach unten öffnenden Kreisbogens aufweist. Diese konstruktive Ausbildung ist vom herstellungs- und fertigungstechnischen Aufwand verhältnismäßig groß, wobei zumindest die innenliegenden Teile bei auftretenden Reparaturarbeiten verhältnismäßig schwer zugänglich sind.Furthermore, DE-PS 14 31 888 shows a crane bridge girder in a closed shell construction for internal trolleys. The crane bridge girder consists of an inner shell with an upper wall and two inner side walls, on which the rails for the trolley are mounted on both sides at the bottom inside and an outer shell adjoining the inner shell at the bottom having. This constructive training is relatively large in terms of manufacturing and manufacturing costs, with at least the internal parts being relatively difficult to access when repair work occurs.
Die FR-A 11 73 666 betrifft einen Portalkran, dessen Brückenträger im wesentlichen einen zylindrischen Querschnitt aufweist, wobei unten ein Längsschlitz für den Durchtritt des Hubseiles der im Inneren des Brückenträgers verfahrbaren Laufkatze vorgesehen ist. Der Brückenträger besteht aus einem äußeren etwa zylindrischen Hohlkörper mit unterem Längsschlitz sowie einem an sich bekannten inneren rechteckigen unten offenen Hohlkörper, dessen untere Ränder entlang den Rändern des Schlitzes des äußeren Hohlkörpers befestigt sind und aus Verbindungselementen zwischen den beiden Hohlkörpern besteht. Hier wird von der geschlossenen Rohrform abgegangen und ein zusätzlicher Kastenträger als Versteifungselement innerhalb des mit einem Längsschlitz versehenen Rohres eingebracht. Der nach unten offene Kastenträger selber ist mit dem Rohr über weitere Versteifungselemente verbunden, um so die Steifigkeit des geschlitzten Rohres wieder herzustellen.FR-A 11 73 666 relates to a gantry crane whose bridge girder essentially has a cylindrical cross section, a longitudinal slot being provided at the bottom for the passage of the hoist rope of the trolley which can be moved inside the bridge girder. The bridge girder consists of an outer approximately cylindrical hollow body with a lower longitudinal slot and a known inner rectangular hollow body open at the bottom, the lower edges of which are fastened along the edges of the slot of the outer hollow body and consist of connecting elements between the two hollow bodies. Here the closed tube shape is abandoned and an additional box girder is introduced as a stiffening element within the tube provided with a longitudinal slot. The box girder, which is open at the bottom, is connected to the tube via further stiffening elements in order to restore the stiffness of the slotted tube.
Der Erfindung liegt die Aufgabe zugrunde, eine im gattungsbildenden Teil des ersten Anspruches beschriebene Verladebrücke dahingehend weiterzubilden, daß eine vom Gewicht her leicht bauende und somit preiswerte Konstruktion gewährleistet ist. Ferner sollen gegenüber dem St.d.T. die Schweiß- und Richtarbeiten auf ein Minimum reduziert und die auftretenden Kräfte problemlos abgeführt werden, ohne in angrenzenden Bauteilen zu Beschädigungen zu führen.The invention has for its object to develop a loading bridge described in the generic part of the first claim in such a way that a lightweight and therefore inexpensive construction is guaranteed. In addition, the welding and straightening work should be reduced to a minimum compared to the St.dT and the forces that occur should be dissipated without causing damage to adjacent components.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß neben dem Träger auch die Brückenstützen sowie eine oberhalb des Trägers vorgesehene Überspannung als glattwandige steifenlose Rohrkonstruktion mit im wesentlichen kreisförmigem Querschnitt ausgebildet sind, daß der Träger mit den Brückenstützen einerseits fest und andererseits gelenkig verbunden ist und daß die Einrichtung zum Be- und Entladen als unterhalb des Trägers verfahrbare Laufkatze ausgebildet ist.This object is achieved in that, in addition to the support, the bridge supports and an overvoltage provided above the support are designed as a smooth-walled, stiff tube construction with an essentially circular cross-section, that the support is fixed to the bridge supports on the one hand and articulated on the other hand, and that the device is designed for loading and unloading as a trolley movable beneath the carrier.
Vorteilhafte Weiterbildungen des Erfindungsgegenstandes sind den Unteransprüchen zu entnehmen.Advantageous further developments of the subject matter of the invention can be found in the subclaims.
Gegenüber dem St.d.T. werden folgende Vorteile erzielt:
In Abhängigkeit von der Baugröße kann gegenüber dem St.d.T. eine Gewichtsersparnis von ca. 35 % herbeigeführt werden. Basierend auf dieser Gewichtsersparnis ist es möglich, mit weniger oder aber leichteren Fahrwerken auszukommen. Darüberhinaus werden erhebliche Ersparnisse in der Fertigung erzielt, da im Gegensatz zur sonst üblichen aufwendigen Rahmen-Schweißkonstruktion gekaufte Fertigrohre als A-Stützen ausgeführt werden können. Der die Laufkatze aufnehmende Hauptträger ist ebenfalls als steifenloses Bauteil (Fertigrohr) ausgebildet. Die Schweißarbeiten reduzieren sich somit ausschließlich auf die Verbindungsstellen der Brückenstützen, der Überspannung sowie den Verbindungsbereichen mit dem Träger.The following advantages are achieved compared to the St.dT:
Depending on the size, a weight saving of approx. 35% can be achieved compared to the St.dT. Based on this weight saving, it is possible to make do with less or lighter chassis. In addition, considerable savings are made in production, since in contrast to the otherwise complex frame welded construction, purchased prefabricated tubes can be designed as A-supports. The main carrier receiving the trolley is also designed as a stiff-less component (finished tube). The welding work is therefore reduced to the connection points of the bridge supports, the overvoltage and the connection areas with the beam.
Die untergehängte Laufkatze ist aufgrund der gewählten dreieckförmigen bzw. A-förmigen Konstruktion der Brückenstützen in der Lage, beide Brückenstützen zu durchfahren, wodurch eine bessere Lagerplatzausnutzung gewährleistet werden kann. Lediglich bei der Feststütze sind zusätzliche Streben in Form einer Fachwerkscheibe vorgesehen, um die Kräfte aus dem Träger besser ableiten zu können. Das Gelenk ist unmittelbar an der Spitze der Pendelstutze vorgesehen, wodurch in die Stäbe fast nur Druck- und Zugkräfte eingeleitet werden. Die aus dem Verfahren der Laufkatze sowie Windeinflüssen resultierenden Massenkräfte werden über den pendelnd angeordneten Hänger in die Hauptträgerröhre eingeleitet und als Torsion in die Feststütze (Fachwerkscheibe) abgegeben.Due to the triangular or A-shaped construction of the bridge supports, the suspended trolley is able to drive through both bridge supports, which means that better use of storage space can be ensured. Additional struts in the form of a truss disc are only provided for the fixed support in order to be able to better derive the forces from the support. The joint is provided directly at the tip of the pendulum support, which means that almost only compressive and tensile forces are introduced into the rods. The mass forces resulting from the moving of the trolley and the effects of wind are introduced into the main support tube via the pendulum-shaped hanger and released as torsion into the fixed support (truss disc).
Der Hauptträger ist zwischen der Spur, d. h. zwischen den Fahrwerken der Brückenstützen überspannt und am Kragarm mit mindestens einer Zugstange gehalten, wodurch die auftretenden Momente drastisch reduziert werden können. Die Zugstange greift vorzugsweise etwa auf halber Höhe des Kragarmes an, wobei beim Verfahren der Laufkatze im Bereich des Kragarmes ein guter Momentenausgleich bezogen auf den Hauptträger sichergestellt wird.The main beam is between the track, i.e. H. spanned between the undercarriages of the bridge supports and held on the cantilever arm with at least one pull rod, which can drastically reduce the moments that occur. The pull rod preferably engages about halfway up the cantilever arm, with a good torque compensation in relation to the main beam being ensured when the trolley is moved in the region of the cantilever arm.
Die Fahrschienen für das Katzfahrwerk können einerseits am Träger in gleichen horizontalen bzw. vertikalen Ebenen und andererseits am Träger in unterschiedlichen vertikalen Ebenen angeordnet sein.The travel rails for the trolley can be arranged on the carrier in the same horizontal or vertical planes and on the carrier in different vertical planes.
Die Erfindung ist anhand eines Ausführungsbeispieles in der Zeichnung dargestellt und wird wie folgt beschrieben. Es zeigen:
- Figur 1 -
- Seitenansicht der erfindungsgemäßen Verladebrücke
- Figur 2 -
- Vorderansicht gemäß Figur 1
- Figur 3 -
- Schnitt durch die Figur 1 gemäß der Linie A-A
- Figur 4 -
- Schnitt durch die Figur 1 gemäß der Linie B-B
einer als Pendelstütze
- Figure 1 -
- Side view of the loading bridge according to the invention
- Figure 2 -
- Front view according to FIG. 1
- Figure 3 -
- Section through Figure 1 along the line AA
- Figure 4 -
- Section through Figure 1 along the line BB
a
Die aus dem Verfahren der Laufkatze 17 sowie Windeinflüssen resultierenden Massenkräfte werden über den Hänger 11 in den Träger 4 eingeleitet und als Torsion in die Feststütze 3 (Fachwerkscheibe 23) abgegeben.The mass forces resulting from the movement of the
Claims (8)
- Loading bridge comprising at least two bridge supports, optionally mounted on travelling means, a girder of tubular shape cooperating with the bridge supports, and a device for loading and unloading goods, characterized in that, in addition to the girder (4), the bridge supports (2, 3) as well as a suspension system (5) disposed above the girder (4) are also in the form of a smooth-walled, unstayed tubular structure having a substantially circular cross-section, in that the girder (4) is joined fast on one side (3) and in hinged fashion (2) on the other side to the bridge supports (2, 3), and in that the loading and unloading device is in the form of a trolley (17) which is movable under the girder (4).
- loading bridge according to Claim 1, characterized in that the bridge supports (2, 3) have an approximately triangular or A-shaped cross-section, and in that the girder (4) is mounted by means of vertically disposed suspenders (11, 12) in the top tips (13, 15) of the bridge supports (2, 3).
- Loading bridge according to Claims 1 and 2, characterized in that the bridge support (2) facing the device (17) to be loaded or unloaded as the case may be is in the form of a pendulum support, the suspender (11) cooperating with the girder being connected to the bridge support (2) by at least one joint (14).
- Loading bridge according to Claims 1 to 3, characterized in that the suspension system (5) of the girder (4) is disposed between the bridge supports (2, 3).
- Loading bridge according to Claims 1 to 4, characterized in that the cantilever arm (7) pointing towards the device (17) to be loaded or unloaded is provided with at least one tie rod (9) which extends in the direction of the pendulum support (2) and of the tip (10) of the suspension system (5) and is likewise in tubular form.
- Loading bridge according to Claims 1 to 5, characterized in that in the region of the fixed support (3) a latticework structure (23) formed thereon and consisting of tubular struts (20, 21, 22) is disposed.
- Loading bridge according to Claims 1 to 6, characterized in that the running rails (18, 19) for the trolley (17) are disposed in the same horizontal and vertical planes on the girder (4).
- Loading bridge according to Claims 1 to 6, characterized in that the running rails for the trolley (17) are disposed in different vertical planes on the girder (4).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3903634A DE3903634C2 (en) | 1989-02-08 | 1989-02-08 | Loading bridge |
DE3903634 | 1989-02-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0384012A1 EP0384012A1 (en) | 1990-08-29 |
EP0384012B1 true EP0384012B1 (en) | 1993-08-11 |
Family
ID=6373596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89121413A Expired - Lifetime EP0384012B1 (en) | 1989-02-08 | 1989-11-18 | Gantry crane |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0384012B1 (en) |
DE (2) | DE3903634C2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19722540A1 (en) * | 1997-05-30 | 1998-12-03 | Estebanez Eva Garcia | Ship-to-shore transloading bridge for containers |
CN105329775B (en) * | 2015-11-18 | 2017-02-01 | 德马科起重机械有限公司 | Flexible weight-reducing main beam structure of crane |
CN108726388B (en) * | 2018-06-05 | 2019-07-23 | 南华大学 | Deep-well solidification bucket takes crane system and its takes the method for hanging |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE915141C (en) * | 1941-12-04 | 1954-07-15 | Bauma Dr Ing Alexander Varren | Device for vertical holding of the pivotable bridge of a dismountable gantry crane supported by pivotable supports that can be contracted by winches while erecting |
FR1173666A (en) * | 1957-04-26 | 1959-02-27 | Improvements to gantry cranes for handling loads in open terrain | |
FR1266570A (en) * | 1960-06-01 | 1961-07-17 | Improvements to gantry cranes for lifting and handling loads | |
FR1284310A (en) * | 1961-03-18 | 1962-02-09 | Anciens Etablissements Metallu | Portal bridge |
AT244540B (en) * | 1963-07-16 | 1966-01-10 | Karl Keienburg Hebezeug Und Kr | Katzbahn truss |
FR1384261A (en) * | 1964-01-04 | 1965-01-04 | Demag Zug Gmbh | Gusset for the suspension of tracks for hoists and similar installations |
GB1200875A (en) * | 1968-08-15 | 1970-08-05 | Wallace Prod Corp B E | Gantries having i-beams |
BE757165A (en) * | 1969-10-08 | 1971-04-07 | Wallace Prod Corp B E | LIFTING GATE |
FR2185578B3 (en) * | 1972-05-25 | 1975-08-08 | Madeleine Ateliers | |
US4568232A (en) * | 1982-12-13 | 1986-02-04 | American Hoist & Derrick Company | Barge mounted horizontal boom bulk unloader |
DE3343872A1 (en) * | 1983-12-05 | 1985-06-20 | Erwin Mehne GmbH & Co, 7100 Heilbronn | Crane girder |
-
1989
- 1989-02-08 DE DE3903634A patent/DE3903634C2/en not_active Expired - Fee Related
- 1989-11-18 DE DE8989121413T patent/DE58905275D1/en not_active Expired - Fee Related
- 1989-11-18 EP EP89121413A patent/EP0384012B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3903634C2 (en) | 1994-01-05 |
EP0384012A1 (en) | 1990-08-29 |
DE3903634A1 (en) | 1990-08-16 |
DE58905275D1 (en) | 1993-09-16 |
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