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 PDFInfo
- 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- Withdrawn
Links
Images
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)
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 (de) | 1992-02-01 | 1992-02-19 | Vorrichtung zur beweglichen Lagerung eines Wippauslegers zur Erleichterung der Bedienbarkeit und Reichweitensteigerung |
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)
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 (de) * | 1987-06-26 | 1987-08-13 | Fa. Palfinger, Salzburg | Kran |
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 |
-
1992
- 1992-02-01 EP EP92101658A patent/EP0554470A1/fr not_active Withdrawn
- 1992-02-19 DE DE9202125U patent/DE9202125U1/de not_active Expired - Lifetime
Patent Citations (8)
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 (de) * | 1987-06-26 | 1987-08-13 | Fa. Palfinger, Salzburg | Kran |
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 (de) | 1992-08-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE LI |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19940212 |