EP0554470A1 - Dispositif pour le positionnement mobile d'une flêche basculante, pour faciliter la manoeuvre et l'augmentation de la portée - Google Patents

Dispositif pour le positionnement mobile d'une flêche basculante, pour faciliter la manoeuvre et l'augmentation de la portée Download PDF

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Publication number
EP0554470A1
EP0554470A1 EP92101658A EP92101658A EP0554470A1 EP 0554470 A1 EP0554470 A1 EP 0554470A1 EP 92101658 A EP92101658 A EP 92101658A EP 92101658 A EP92101658 A EP 92101658A EP 0554470 A1 EP0554470 A1 EP 0554470A1
Authority
EP
European Patent Office
Prior art keywords
jib
crane
movable
rotatable
building
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP92101658A
Other languages
German (de)
English (en)
Inventor
Siegfried Schuster
Franz-Xaver Geiger
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.)
AS Schuster Maschinen- und Kranbau GmbH
Original Assignee
AS Schuster Maschinen- und Kranbau GmbH
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 AS Schuster Maschinen- und Kranbau GmbH filed Critical AS Schuster Maschinen- und Kranbau GmbH
Priority to EP92101658A priority Critical patent/EP0554470A1/fr
Priority to DE9202125U priority patent/DE9202125U1/de
Publication of EP0554470A1 publication Critical patent/EP0554470A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C11/00—Trolleys or crabs, e.g. operating above runways
    • B66C11/08—Trolleys or crabs, e.g. operating above runways with turntables
    • B66C11/10—Trolleys or crabs, e.g. operating above runways with turntables equipped with jibs

Definitions

  • the invention relates to a device for the movable mounting of a luffing jib in slewing cranes, which are preferably installed in the roof spaces of agricultural buildings.
  • the boom can be equipped with a hoist that usually carries a self-gripper or the gripper is mounted directly on the boom tip, so that the load is taken up directly by lowering and lifting the boom tip. Because of the pillars (half-timbered buildings) and the stored feed, high silo containers and the like, agricultural buildings have little free space for turning and moving the crane.
  • the pivoting range of the boom is restricted because the boom end hits the crane bridge when the boom tip is lowered.
  • a swiveling axle that is lowered significantly downwards increases the required headroom of the crane and therefore reduces the desired stacking height.
  • the boom tip describes a radius about its pivotable axis that is difficult for the operator to estimate.
  • the invention is based on the prior art described at the outset and pursues the task of mounting a boom, which is short in relation to a normal boom storage, so flexibly by means of a device that when the boom tip is lowered it is also lowered at its base, so that its maximum to reach the remote reception point.
  • the jib tip When the jib tip is in the up position, the jib should be pulled back as close as possible to the axis of rotation of the crane so that the crane takes up little space for turning.
  • the end of the boom opposite the jib tip should be able to be held longer, since it does not interfere with the maneuvering and turning of the crane, without it bumping into the crane bridge when the jib tip is lowered. This means that the length of the boom should be kept shorter and should be pivotable in its respective position so that it corresponds to the required boom width, the lowering depth and the desired remaining length.
  • two movable linkages are provided, which are pivoted with their upper end on the rotatable part of the crane, which serves as a suspension, and with their lower end also rotatably supported, carry the boom.
  • the crane bridge with its rotating part, the two movable linkages and the jib together form an irregular square that is movably supported at all corners.
  • the length of the two movable linkages, as well as the bearing points on the turned part, as well as on the boom determine the sequence of movements.
  • the kinetic energy is preferably based on a hydraulic cylinder that can be used between the boom and a linkage, but also between the boom and the suspension and working between the linkages. If the hydraulic cylinder is moved, the boom tip lowers or rises. When lowering the boom tip, the boom is pressed down by the pivoting movement of the two linkages, so that the range, e.g. B. when lifting loads from the floor, is increased. The end of the boom opposite the boom tip now points upwards, but due to its position further away from the suspension, it can no longer hit the crane bridge. When lifting the jib tip, the jib is also lifted at the base and at the same time swiveled in the direction of the axis of rotation of the crane.
  • a hydraulic cylinder that can be used between the boom and a linkage, but also between the boom and the suspension and working between the linkages.
  • the boom tip thus widens when turned in a raised position retracted in the direction of the crane's axis of rotation.
  • the crane becomes compact and easily rotatable and maneuverable.
  • the overall height of the crane is reduced and the necessary clearance height of the crane is significantly reduced.
  • Driving over stored material is made easier and thus the stack height is increased.
  • the jib tip does not describe a path in the radius around the pivot point of the jib, as with conventional cranes, but rather an Elypsian path that comes very close to the lower right, which can be more easily estimated by the operating personnel. This is achieved by superimposing the radius movement of the boom tip and the pendulum movement of the boom. This makes it much easier to move the boom into containers and narrow building areas.
  • the boom When lowering the boom tip, the boom is also pivoted at its articulation points in the direction of the boom tip, thus increasing the reach horizontally. Since the boom is held at two points and the articulation points of the cylinder, the design of the movable linkage can be dimensioned relatively easily.
  • the transmission forces to be absorbed when the crane is turned between the rotating part and the jib are now also supported on two points and have a stabilizing effect.
  • the overall technology of the movable levers does not become more expensive than conventional bearings. Another, not to be underestimated, advantage of this construction is the compactness of the crane during transport.
  • FIG. 1 shows the movably mounted boom (1) of a crane installed in the roof space of a building (2), which can be moved longitudinally on permanently mounted rails (3 + 3a) with the crane bridge (6).
  • the crane bridge (6) carries the slewing gear (5) to which the upper ends of the two rods (4 + 4a) are attached.
  • the boom (1) is carried over the movable bearing points (9, 10, 12 + 13).
  • the hydraulic cylinder (7) works in the example shown between the linkage (4) and the boom (1). If the hydraulic cylinder (7) is moved, the boom tip (8) lowers. At the same time, the articulation points (9 + 10) of the boom (1) are lowered and swiveled towards the boom tip (8).
  • the range of the boom (1) is thereby increased in the direction of the receiving area.
  • the end of the boom (12) opposite the boom tip (8) is given a larger free space upwards by lowering the articulation points (9 + 10) and can thus also with a large projection length no longer reach the slewing gear (5) with the boom tip (8) lowered to the maximum.
  • the gripper (11) which is firmly connected to the boom tip (8), can be moved past or pivoted past the column (14) in this position. Due to the superimposition of the radius movement when lowering the boom tip (8) and the pendulum movements of the linkage (4 + 4a), when lowering the boom tip (8) describes an Elypsian path (16) that comes very close to a vertical.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP92101658A 1992-02-01 1992-02-01 Dispositif pour le positionnement mobile d'une flêche basculante, pour faciliter la manoeuvre et l'augmentation de la portée Withdrawn EP0554470A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP92101658A EP0554470A1 (fr) 1992-02-01 1992-02-01 Dispositif pour le positionnement mobile d'une flêche basculante, pour faciliter la manoeuvre et l'augmentation de la portée
DE9202125U DE9202125U1 (fr) 1992-02-01 1992-02-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92101658A EP0554470A1 (fr) 1992-02-01 1992-02-01 Dispositif pour le positionnement mobile d'une flêche basculante, pour faciliter la manoeuvre et l'augmentation de la portée

Publications (1)

Publication Number Publication Date
EP0554470A1 true EP0554470A1 (fr) 1993-08-11

Family

ID=8209289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92101658A Withdrawn EP0554470A1 (fr) 1992-02-01 1992-02-01 Dispositif pour le positionnement mobile d'une flêche basculante, pour faciliter la manoeuvre et l'augmentation de la portée

Country Status (2)

Country Link
EP (1) EP0554470A1 (fr)
DE (1) DE9202125U1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE209545C (fr) *
FR651814A (fr) * 1927-03-28 1929-02-28 Demag Ag Grue à volée variable, à déplacement horizontal de la poulie de volée et de la charge
DE1245072B (de) * 1965-01-08 1967-07-20 Weserhuette Ag Eisenwerk Bewegliches oder stationaeres, hydraulisch oder mechanisch betaetigtes Hebegeraet
DE2137722B1 (de) * 1971-07-28 1973-04-26 Josef Brunnhuber Maschinenfabrik, 8900 Augsburg Auslegerkran
DE2628917A1 (de) * 1976-06-28 1977-12-29 Georg Lutz Vorrichtung zum erfassen, anheben, transportieren und absetzen von guetern aller art
DE8708888U1 (fr) * 1987-06-26 1987-08-13 Fa. Palfinger, 5028 Salzburg, At
DE3620375A1 (de) * 1986-06-18 1987-12-23 Kloeckner Becorit Ind Ehb-montagekran
EP0388702A1 (fr) * 1989-03-21 1990-09-26 ITI/CLM IMPIANTI TECNICI INDUSTRIALI SpA Pont roulant avec une flèche articulée orientable

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE209545C (fr) *
FR651814A (fr) * 1927-03-28 1929-02-28 Demag Ag Grue à volée variable, à déplacement horizontal de la poulie de volée et de la charge
DE1245072B (de) * 1965-01-08 1967-07-20 Weserhuette Ag Eisenwerk Bewegliches oder stationaeres, hydraulisch oder mechanisch betaetigtes Hebegeraet
DE2137722B1 (de) * 1971-07-28 1973-04-26 Josef Brunnhuber Maschinenfabrik, 8900 Augsburg Auslegerkran
DE2628917A1 (de) * 1976-06-28 1977-12-29 Georg Lutz Vorrichtung zum erfassen, anheben, transportieren und absetzen von guetern aller art
DE3620375A1 (de) * 1986-06-18 1987-12-23 Kloeckner Becorit Ind Ehb-montagekran
DE8708888U1 (fr) * 1987-06-26 1987-08-13 Fa. Palfinger, 5028 Salzburg, At
EP0388702A1 (fr) * 1989-03-21 1990-09-26 ITI/CLM IMPIANTI TECNICI INDUSTRIALI SpA Pont roulant avec une flèche articulée orientable

Also Published As

Publication number Publication date
DE9202125U1 (fr) 1992-08-27

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