A locking device for a telescopic boom, in particular of a mobile crane, has an actuator for generating an actuating force, a driver that is reversibly coupled, during a telescoping movement of the telescopic boom, to a locking bolt, which is secured at a boom extension segment of the telescopic boom, and to be moved under the action of the actuating force for adjusting the locking bolt between at least one locking position and a release position. A driver bolt can be moved reversibly by the actuating force between a carry-along position gripping an inner boom extension segment and an empty running position not gripping a boom extension segment. A slotted actuating link is configured for a joint movement of the locking bolt and the driver bolt. A movement plane of the slotted actuating link is oriented perpendicularly to the telescoping direction of the telescopic boom.
B66C 23/70 - Jibs assembled from separate sections to form jibs of various discrete lengths
B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
2.
Hydraulic actuator for a locking device of a telescopic boom, locking device, telescopic boom, mobile crane, and method for adjusting a telescopic boom
A hydraulic actuator for a mobile crane, in particular for a locking device of a telescoping device. The hydraulic actuator has a double chamber cylinder with a first cylinder chamber and a second cylinder chamber oriented in an opposite direction to the first cylinder chamber, a first piston rod for the first cylinder chamber, and a second piston rod for the second cylinder chamber. A first restoring spring restores the first piston rod to its main position and a second restoring spring restores the second piston rod to its main position. The main position of the first piston rod is its pushed-in position and the main position of the second piston rod is its extended position.
B66C 23/70 - Jibs assembled from separate sections to form jibs of various discrete lengths
B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
F15B 15/08 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit
A mobile crane includes an undercarriage, a superstructure having a crane boom and a crane cable, and a plurality of support carriers for stabilizing the undercarriage in a correct operating state. In order to set-up the mobile crane, a support carrier is disposed in a disassembled state separately from the mobile crane in a waiting position. The support carrier is connected to the crane cable of the crane boom and is shifted between the waiting position and a receiving position which is disposed on the undercarriage. The support carrier is moved by the crane boom between the receiving position and a coupling position in a support box of the undercarriage in such a manner that the support carrier is guided in the support box at least in a substantially tension-free manner. A controller is configured to carry out the set-up method.
B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
B66C 23/78 - Supports, e.g. outriggers, for mobile cranes
B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable
A crane, in particular a mobile crane, includes a crane jib which can be moved about a substantially horizontal luffing axis, and a tensioning device for the crane jib. The tensioning device includes two pendants which run from the jib tip to the jib base of the crane jib and tensioning posts each tensioning a respective one of the pendants relative to the crane jib in a triangular configuration. In order to operate the crane, a luffing angle of the crane jib about the luffing axis is measured or recorded, and a spread angle between the tensioning posts while the crane jib is being used is modified depending on the luffing angle.
A mobile crane has an undercarriage, a superstructure arranged on the undercarriage, a slewing gear by which the superstructure may be rotated relative to the undercarriage, a slewing gear brake that acts on the slewing gear to brake a rotation of the superstructure, and a jib mounted on the superstructure as to be adjustable in luffing angle and/or in length. The mobile crane additionally contains a dolly coupling arranged on the jib and by which the jib is coupled to a mobile crane dolly during dolly travel with the superstructure in an extended position. The mobile crane further has a sensor interface for connecting a dolly coupling sensor, and a controller that is adapted to ascertain during dolly travel, in dependence on a signal received from the dolly coupling sensor, whether the jib rests on the mobile crane doll, and to activate the slewing gear brake if it does not.
B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable
B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
B60P 3/40 - Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying long loads, e.g. with separate wheeled load-supporting elements
B66C 23/70 - Jibs assembled from separate sections to form jibs of various discrete lengths
12 - Land, air and water vehicles; parts of land vehicles
37 - Construction and mining; installation and repair services
Goods & Services
Machine tools; machines, namely cranes, in particular mobile
cranes, transportable cranes, fixed cranes, self-propelled
cranes, truck cranes; derricks; crane trucks; attachments
for cranes; lifting platforms for use with cranes; gantries;
grippers for cranes; construction vehicles, other than for
transportation purposes; elevating apparatus; lifting
platforms; remotely controlled lifting machines; parts of
the aforesaid goods. Vehicles, in particular crane vehicles or vehicle cranes;
construction vehicles for transport purposes; parts of the
aforesaid goods. Rental of cranes [construction equipment]; servicing of
cranes; maintenance of cranes.
A mobile telescopic crane has a telescopic jib with at least three part-jibs. Each of the part-jibs is constructed from at least two part-jib portions so as to be telescopic in a longitudinal direction. Part-jib portions arranged at a spacing from one another transverse to the longitudinal direction each form a jib portion with at least one flexurally rigid connecting element. Respective adjacent jib portions are mechanically lockable with respect to one another in the longitudinal direction. A construction of this type of the jib means that an increase in the bearing load is easily achieved by increasing the area moment of inertia of the jib.
B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable
B66C 23/70 - Jibs assembled from separate sections to form jibs of various discrete lengths
B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
A mobile telescopic crane has a telescopic jib with at least four part-jibs. Each of the part-jibs is constructed from at least two part-jib portions so as to be telescopic in a longitudinal direction. Part-jib portions arranged at a spacing from one another transverse to the longitudinal direction each form a jib portion with at least one flexurally rigid connecting element. A construction of this type of the jib means that an increase in the bearing load is easily achieved by increasing the area moment of inertia of the jib.
B66C 23/04 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes with jibs the effective length of which is variable in operation, e.g. longitudinally displaceable, extensible
B66C 23/70 - Jibs assembled from separate sections to form jibs of various discrete lengths
B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable
A mobile telescopic crane (1) has a telescopic jib (9) with at least three sub-jibs (16 to 18). Each of the sub-jibs (16 to 18) is constructed from at least two sub-jib portions (19 to 27) so as to be telescopic in a longitudinal direction (L). Sub-jib portions (19 to 27), which are spaced apart from one another transversely to the longitudinal direction (L), each form a jib portion (11 to 13) with at least one flexurally rigid connecting element (28 to 31). Respectively adjacent jib portions (11 to 13) can be locked mechanically in relation to one another in the longitudinal direction (L). Such a construction of the jib (9) easily provides for an increase in carrying loads as a result of the second moment of area of the jib (9) being increased.
B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
B66C 23/70 - Jibs assembled from separate sections to form jibs of various discrete lengths
A mobile telescopic crane (1) has a telescopic jib (9) with at least four sub-jibs (16 to 19). Each of the sub-jibs (16 to 19) is constructed from at least two sub-jib portions (20 to 31) so as to be telescopic in a longitudinal direction (L). Sub-jib portions (20 to 31) which are spaced apart from one another transversely to the longitudinal direction (L) each form a jib portion (11 to 13) along with at least one flexurally rigid connecting element (32 to 35). Such a construction of the jib (9) easily provides for an increase in carrying loads as a result of the second moment of area of the jib (9) being increased.
B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
B66C 23/70 - Jibs assembled from separate sections to form jibs of various discrete lengths
