Abstract: A system for controlling the orientation of a hanging load, the system comprising a lifting frame (20) being connectable to a load to be lifted, on which lifting frame two or more flywheel units (9) are arranged, the flywheel units (9) each comprising a flywheel (10) rotary arranged in a gimbal (11) which again is rotary arranged in a gimbal support (15) along an axis of rotation (6) being perpendicular to the axis of rotation (8) of the flywheel (10), where an electric motor (12) is arranged for rotating the flywheel (10), and a tilting motor (13) is arranged to tilt the gimbal by rotating the gimbal about its axis of rotation (6), wherein the system further comprises a control unit for individually controlling the speed and the direction of rotation of the flywheels, and the tilting of the gimbals, the control system being adopted for re-initialization of a flywheel units (9) either by reducing the speed of rotation fully or partly, tilting the gimbals to a new starting position, and spinning up the flywhee

Abstract: The present disclosure relates to a crane having a travelable undercarriage and a superstructure which is rotatably supported thereon, to which a boom is luffably connected in an articulated manner, on the one hand, and a counterweight arrangement is telescopically supported, on the other hand. In accordance with the present disclosure, the counterweight arrangement comprises a U-shaped frame in which a likewise U-shaped counterweight frame is telescopically guided. The counterweight plates forming the counterweight are separated into two stacks which are each longitudinally displaceably guided on a side member.

Abstract: A hydraulic circuit for use on a construction machine includes a first valve, a second valve, and at least a third valve. The second and third valve each includes at least one inlet port connected to a first outlet port of the first valve. The first outlet port of each of the second and third valves are configured to reduce a first pressure to a second pressure and/or a third pressure downstream of the second valve and the third valve, respectively. The second valve and the third valve also include at least a second outlet port connected to a reservoir tank. A hydraulic motor is connected to the first outlet port of the second valve, which operates the hydraulic motor in a first direction. The hydraulic motor also is connected to the first outlet port of the third valve, which operates the hydraulic motor in a second direction.

Abstract: A crane characterized in that it comprises a lower vertical boom (10) and an upper horizontal boom (12), mutually connected through a joint element (20), in that the lowest part of the vertical boom is connected through a pedestal (14), the pedestal further comprising a slew ring for rotating of the crane about a vertical axis (16), and a tension rod (22) is arranged between the pedestal and the joint element in a distance from the vertical boom and mainly parallel to this in a normal position of the crane.

Abstract: A sprocket assembly defining a sprocket assembly width. The assembly has at least eleven sprockets and the sprocket assembly mounts to a bicycle freewheel hub that rotates about a rotation axis which defines a predetermined axial distance on the hub between a plane that is substantially perpendicular to the rotation axis. At least one point of the attachment seats for spokes closest to the freewheel body and a plane is substantially perpendicular to the rotation axis and defined in the fastening portion to the frame. The sprocket assembly width is lower than or equal to the predetermined axial distance. A chain that engages the sprockets has a maximum thickness in the direction of the rotation axis between and including 4.6 mm and 5.8 mm.

Abstract: A bicycle derailleur comprises a base member adapted to be mounted to a bicycle, a movable member movably coupled to the base member, and a chain guide coupled to the movable member. The chain guide is coupled for rotation around a rotational axis (X), and a biasing element biases the chain guide in a selected rotational direction. A resistance applying unit applies a resistance to rotational movement of the chain guide in a direction opposite the selected rotational direction, and an adjusting unit adjusts an amount of resistance applied by the resistance applying unit.

Abstract: A load guiding arrangement realized for mounting to a crane, which load guiding arrangement comprises a number of load guides, wherein a load guide comprises a guide wire extending from a lower level of the crane to an upper level of the crane; a bridging connector realized to bridge a gap between the guide wire and a control wire, which bridging connector is free to travel along the guide wire and the control wire according to a vertical displacement of a load; and a control wire extending from a lower level of the crane, through the bridging connector to a lifting connector for connecting to the load (4), and through the bridging connector again to an upper level of the crane is provided.

Abstract: The invention relates to a crane having an undercarriage with a swivel connection and having a superstructure rotatably supported thereon via the swivel connection and comprising at least one boom system arranged at said superstructure and luffable about a luffing axis or a self-climbing tower slewing crane rotatably supported thereon via the swivel connection. In accordance with the invention, the undercarriage has a pot as a central component which, on the one hand, receives the swivel connection. Furthermore, however, the pivotable supports can also be pivotally connected to it. Side members are present at mutually oppositely disposed sides and at least one traveling gear can respectively connected to them with at least one degree of freedom.

Abstract: A pin puller is mounted between first and second connectors, preferably connectors on a lift crane, each of the connectors having a hole there though. The pin puller includes: a) first and second support frame members; b) a first pin with a first end located in the hole of the first connector and a second end inside the first support frame member; c) a second pin with a first end located in the hole of the second connector and a second end inside the second support frame member; d) at least one linear actuator connected to the first and second pins; and e) a length adjustment device between the first and second support frame members, with its length adjusted so as to force the first support frame member into contact with the first connector and the second support frame member into contact with the second connector.

Abstract: The telescopic arm for operating machines includes an outer arm, four coaxial slip-off elements, first, second, third, fourth and an operative head associated to the latter. The telescopic arm includes: a drive system, supported partially outside of the telescopic arm, for moving synchronously said slip-off members in their extending and returning travels; a hydraulic circuit, housed inside said telescopic arm, comprising a first and a second group of hydraulic conduits, which include, respectively, first and second flexible pipes, kept stretched during the returning step of said slip-off members by the corresponding idler pulleys, supported by the latter.

Abstract: A marine knuckle boom crane includes a crane housing which is rotational relative to a pedestal about a vertical rotation axis and a knuckle boom assembly attached to the crane housing. The knuckle boom assembly includes a main boom, the inner end of which is connected pivotably about a first horizontal pivot axis to the crane housing; and a jib, the inner end of which is connected pivotably about a second horizontal pivot axis to the outer end of the main boom, wherein the jib is pivotable at least between an extended position in which the tip extends mainly forward from the main boom, and a folded position in which the jib is folded back, essentially parallel along the main boom. In order to position the jib with respect to the main boom, a tensioning member is provided extending between the crane housing and a curved extension guide connected to the jib.

Abstract: A connector is provided for connecting a first crane and a second crane, each crane having a boom, the connector includes a first connecting arm and a second connecting arm, the first connecting arm building the top of the boom of the first crane, the second connecting arm building the top of the boom of the second crane, the first connecting arm and the second connecting arm being hinged together about only one common pivotal axis within a common pivotal plane, and the booms of the first and the second cranes are linked up in motion in a common luffing plane, and the luffing plane is identical to the pivotal plane.

Abstract: A fast crane and an operation method for the same are provided. The operation method includes calculating a pendulum period and moving the object. The pendulum period of the cable is calculated. The object is moved with an acceleration during an active time based on the pendulum period.

Abstract: A crane, in particular an overhead crane or gantry crane, comprising at least one crane girder, which extends horizontally and is designed as a trussed girder having an upper run and a lower run. A crane trolley having a lifting device can be moved on the crane girder. The invention further relates to a method for assembling a crane girder, comprising an assembly step for producing the trussed structure of the crane girder. The crane girder includes an adapter on at least one of the two opposite ends, which adapter can be fastened to the upper run and the lower run in such a way that the adapter can be oriented relative to the upper run and the lower run and then the adapter can be welded onto the upper run and the lower run in a desired position.

Abstract: The invention relates to a crane, in particular an overhead crane or gantry crane, having at least one crane girder that extends horizontally in a longitudinal direction. The crane is designed as a trussed girder and comprises struts which connect an upper run and a lower run together. The upper run and lower run of the trussed girder are designed in a laminar manner, on which a crane trolley having a lifting gear can be moved. The at least one crane girder is advantageously improved by virtue of the fact that the struts are designed in a laminar manner, each strut has a main surface that extends transversely with respect to the longitudinal direction of the crane girder. The first or second strut end of each strut has at least one aperture on the main surface that lies against the lower run or the upper run.

Abstract: A double jib slewing pedestal crane includes a main jib and a secondary jib, and a secondary jib positioning device to support and position the secondary jib with respect to the main jib and actuate the pivotal movement of the secondary jib. The secondary jib positioning device includes a secondary jib positioning cable; a spoke structure fixed to the secondary jib and extending radially outward; a tension chain connected at one end to the secondary jib positioning cable and at the other end to the secondary jib and/or to the spoke structure, wherein the spoke structure is adapted to support the tension chain.

Abstract: There is provided a torque device which includes a driving module, a driven module and an adjusting module. The adjusting module comprises a magnetic torque device, wherein an input end of the magnetic torque device is capable of being driven by the driving module, an output end of the magnetic torque device is capable of driving the driven module, the input end and the output end of the magnetic torque device have a variable distance therebetween, and the input end is capable of driving the output end to transfer a torque in operation.

Abstract: There is provided a boom extending and retracting apparatus that can improve the convenience of the telescopic boom while reducing the burden on the operator. The boom extending and retracting apparatus of the crane chooses the mode of the fluid circuit between the normal fluid circuit and the differential fluid circuit to slide a plurality of boom members by one telescopic cylinder. After the operating lever is turned to an extension side and the controller starts extending the telescopic boom using the differential fluid circuit, when the operating lever is turned to the extension side again via the neutral position, the controller chooses the normal fluid circuit to extend the telescopic boom using the normal fluid circuit.

Abstract: A front derailleur basically includes a fixed member, a movable member, a driven link and a first link. The fixing member is configured to be fixed to a bicycle frame. The movable member is movably supported with respect to the fixed member. The driven link is operatively coupled to the movable member. The first link movably connects the movable member to the fixed member, and is adjustably coupled to the driven link in a fixed position by a fixing structure to establish a fixed rest position of the movable member with respect to the fixed member.

Abstract: A system for determining the horizontal location and skew of a grappling member of a crane includes at least two types of reflectors arranged on the grappling member, the relative locations and shapes of which are known; at least one scanning distance sensor mounted on the crane to measure the distance and direction from the crane to the reflectors; and a data processing device arranged to store in its memory the relative locations and shapes of the reflectors; and to determine the horizontal location and skew of the grappling member on the basis of at least the relative locations and shapes of the reflectors and measured distances and directions from the crane to the reflectors.