This invention relates to a crane in particular a mobile crane or crawler crane, comprising a main boom and a counter-boom as well asan erecting trestle arranged on the uppercarriage of the crane, which is connected to a guying of the counter-boom via a cable adjuster, wherein there is provided at least one pressure prop articulated to the counter-boom or on the pivot axis of the counter-boom in order to temporarily receive the cable adjuster and/or the guying, wherein the receiving positionpoint of the pressure prop is designed such that the cable adjuster or guying can lift off from the pressure prop on its own at a particular erecting angle of the counter-boom.

The work machine includes a work machine body, and an assembly component that is attached to the work machine body. The work machine further includes a detection unit that monitors surroundings. The work machine body includes a lower traveling body and a rotating platform that rotates relative to the lower traveling body. The detection unit is attached to the rotating platform without interposing the assembly component.

A counterbalanced vertical track assembly which may be configured with three types of pulley support assemblies are herein disclosed. The first type of pulley support assembly has a pair of opposed pulley modules having an elongate structural element interposed the two pulley modules which are attached to end plates at both ends of the elongate structural element. The second type of pulley support assembly has a pair of opposed pulley modules which include male end connectors for demountable engagement of the pulley modules with another module of the system with female ends. The third type of pulley support assembly has a pair of opposed pulley modules wherein the modules' pulley brackets are repositionable to varying angular orientations by alternating screw mount positions selected on mount components at opposite ends of an elongate structural element.

A counterbalanced vertical track assembly which may be configured with three types of pulley support assemblies are herein disclosed. The first type of pulley support assembly has a pair of opposed pulley modules having an elongate structural element interposed the two pulley modules which are attached to end plates at both ends of the elongate structural element. The second type of pulley support assembly has a pair of opposed pulley modules which include male end connectors for demountable engagement of the pulley modules with another module of the system with female ends. The third type of pulley support assembly has a pair of opposed pulley modules wherein the modules' pulley brackets are repositionable to varying angular orientations by alternating screw mount positions selected on mount components at opposite ends of an elongate structural element.

There are provided high power laser systems for performing decommissioning of structures in land based boreholes, and wells, offshore, and other remote and hazardous locations, and using those system to perform decommissioning operations. In particular embodiments the laser system is a Class I system and reduces emission of materials created during laser cutting operations. The laser systems can include lifting and removal equipment for removing laser sectioned material.

This control system comprises: a signal processing unit generating a signal related to the target operating amount of an actuator; a feedback control unit that controls the actuator based on the difference between the signal related to the target operating amount and a signal related to the fed-back operating amount; a feed-forward control unit that controls the actuator based on the signal related to the target operating amount in cooperation with the feedback control unit, and learns the characteristics of the actuator by adjusting a weighting factor based on a teacher signal; and a calculation unit that calculates information related to the deflection of the work machine. The signal processing unit corrects intermediate information, which is generated in the process of generating the signal related to the target operating amount, based on the information related to the deflection, and generates the signal related to the target operating amount.

This control system comprises: a signal processing unit generating a signal related to the target operating amount of an actuator; a feedback control unit that controls the actuator based on the difference between the signal related to the target operating amount and a signal related to the fed-back operating amount; a feed-forward control unit that controls the actuator based on the signal related to the target operating amount in cooperation with the feedback control unit, and learns the characteristics of the actuator by adjusting a weighting factor based on a teacher signal; and a calculation unit that calculates information related to the deflection of the work machine. The signal processing unit corrects intermediate information, which is generated in the process of generating the signal related to the target operating amount, based on the information related to the deflection, and generates the signal related to the target operating amount.

A crane for lifting and transporting loads includes a base frame for transferring the loads of the crane onto a support surface by a plurality of wheels. The wheels are capable of rotating relative to the base frame so as to change the camber angle of the wheels.

A pallet raising apparatus for raising a pallet of bags to a desired height adjacent to an air seeder includes a vehicle with a load bed, and a raising stand positioned at a rear end of the load bed. A pallet deck supports the pallet, and the entire pallet is raised and lowered to a convenient height adjacent to an agricultural product applicator. Additional features allow the apparatus to raise large bags of agricultural products as well.

A lifting system for a crane for generating a hoist rope pretension during a travel of a suspension element of the crane is provided. The system includes a separable pretension hook block and a connected auxiliary rope that is supported in a windable and unwindable manner on an auxiliary winch on the crane, and that is guided over a deflection apparatus arranged or installable at a boom of the crane. The pretension hook block comprises two lockable hook block parts that are releasably lockable to one another, that are connected to one another via the auxiliary rope, and of which an upper hook block part has a fastening means for fastening to the suspension element of the crane and a lower hook block part has a pick-up means for fastening a weight.