The disclosure relates to a mobile crane, such as a crawler crane, comprising an undercarriage having a chassis, a superstructure rotatably supported on the undercarriage, and superstructure ballast, with the superstructure ballast comprising a ballast mounting apparatus vertically adjustable by means of a lifting device of the superstructure. In accordance with the disclosure, the ballast mounting apparatus is fastenable to the superstructure in an assembly position by means of a single connection element bearing the vertical load of the superstructure ballast. A centering means is furthermore provided that is adapted to take up transverse forces occurring in the assembly position.

The disclosure relates to a mobile crane, such as a crawler crane, comprising an undercarriage having a chassis, a superstructure rotatably supported on the undercarriage, and superstructure ballast, with the superstructure ballast comprising a ballast mounting apparatus vertically adjustable by means of a lifting device of the superstructure. In accordance with the disclosure, the ballast mounting apparatus is fastenable to the superstructure in an assembly position by means of a single connection element bearing the vertical load of the superstructure ballast. A centering means is furthermore provided that is adapted to take up transverse forces occurring in the assembly position.

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.

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.

The invention relates to an apparatus for ballast weighing on a crane, comprising at least two ballasting cylinders that are equipped to lift/lower the ballast and that each comprise at least one pressure transducer in the region of the piston and/or rod side, and comprising at least one evaluation unit that is equipped to calculate the mass moved by the ballasting cylinders from the pressures detected by the pressure transducers on retraction and/or extension of the ballasting cylinders, excluding the friction forces occurring in the ballasting cylinders. The invention furthermore is directed to a method for calculating the ballast weight of a crane by means of a corresponding apparatus.

To provide a crane capable of stably traveling a transporter capable of supporting a counterweight in cooperation with slewing of an upper slewing body. The crane has a connecting body connecting the self-propelled transporter and the upper traveling body, a transporter angle detecting unit, and a steering angle setting unit. A transporter connecting portion of the connecting body is rotatably connected to the self-propelled transporter about a rotation center axis, and moves relative to a slewing body connecting portion whereby the relative distance between the self-propelled transporter and the upper slewing body is variable. The steering angle setting unit sets the steering angle of the wheels of the self-propelled transporter according to the transporter angle detected by the transporter angle detecting unit so that the transporter angle approaches 90 degrees.

An attachment assembly for use with a work machine includes an attachment adapter coupled to the work machine and fixed relative thereto and an attachment frame including a member defining an attachment point configured to engage, into an engaged mode, with the attachment adapter when a front suspension system of the work machine is raised to a raised position, and configured to disengage, into a disengaged mode, from the attachment adapter when the front suspension system is lowered to a lowered position, the attachment adapter configured to travel with the work machine when in the engaged mode and the disengaged mode, and the attachment frame configured to travel with the work machine when in only the engaged mode.

An attachment assembly for use with a work machine includes an attachment adapter coupled to the work machine and fixed relative thereto and an attachment frame including a member defining an attachment point configured to engage, into an engaged mode, with the attachment adapter when a front suspension system of the work machine is raised to a raised position, and configured to disengage, into a disengaged mode, from the attachment adapter when the front suspension system is lowered to a lowered position, the attachment adapter configured to travel with the work machine when in the engaged mode and the disengaged mode, and the attachment frame configured to travel with the work machine when in only the engaged mode.

This crane is provided with a counterweight which includes an engaging part, a swivel body which is configured to be capable of swiveling, and a fixing unit which is provided on the swivel body, includes an engaged part that can connect with the engaging part, and can adopt a front position and a rear position; in each of the front position and the rear position, the fixing unit and the counterweight are linked by the engaged part being arranged in a position corresponding to that of the engaging part and being connected to the engaging part.

A system and method for automatically comparing obtained wireless device location information from a wireless network and comparing that location with another independent source geographic location is provided. Location information is derived from two or more sources in a multiplicity of ways and a comparison is made within a Location Comparison Engine. The Location Comparison Engine makes use of databases that assist in resolving obtained raw positioning information and converting that positioning information into one or more formats for adequate location comparison. Results of the location comparison are deduced to determine if the wireless device is in some proximity to some other activity source location. Other location information used for comparison may be obtained from a multiplicity of sources, such as another network based on some activity of the wireless device user, another wireless device via a wireless network, or any system capable of providing location information to the Location Comparison Engine.