The invention relates to a method of monitoring the safety of a crane, in particular of a revolving tower crane having a revolving deck, wherein the crane has a sensor system and a crane control, and wherein furthermore at least one tilt sensor is provided. In accordance with the invention, the at least one tilt sensor is attached to the revolving deck of the revolving tower crane, with the monitoring of the crane safety taking place at least during the putting up and/or taking down of the revolving tower crane.

The invention relates to a method of monitoring the safety of a crane, in particular of a revolving tower crane having a revolving deck, wherein the crane has a sensor system and a crane control, and wherein furthermore at least one tilt sensor is provided. In accordance with the invention, the at least one tilt sensor is attached to the revolving deck of the revolving tower crane, with the monitoring of the crane safety taking place at least during the putting up and/or taking down of the revolving tower crane.

A structure for modular utilities units includes a skeletal frame forming multiple bays, each configured for receiving a respective utilities unit. A placement subassembly is mounted on the frame and includes a utilities unit connector configured for connecting to a respective utilities unit and a lifting device configured for attachment to the connector and raising and lowering a respective utilities unit. The utilities units can provide power, telecommunications, water, data processing and other utility functions. A logistics system includes vehicles for conveying the utilities units to and from the structure. The logistics system interfaces with ground, marine and air transportation resources.

A structure for modular utilities units includes a skeletal frame forming multiple bays, each configured for receiving a respective utilities unit. A placement subassembly is mounted on the frame and includes a utilities unit connector configured for connecting to a respective utilities unit and a lifting device configured for attachment to the connector and raising and lowering a respective utilities unit. The utilities units can provide power, telecommunications, water, data processing and other utility functions. A logistics system includes vehicles for conveying the utilities units to and from the structure. The logistics system interfaces with ground, marine and air transportation resources.

A connecting device connects a first attachment and a second attachment constituting a working machine with each other. The connecting device includes a first connected member, a second connected member, and a connecting member (connecting pin 15). The first connected member extends outward from a first side surface of the first attachment, the first side surface extending in a longitudinal direction of the first attachment. The second connected member extends outward from a second side surface of the second attachment, the second side surface extending in a longitudinal direction of the second attachment, the second connected member facing the first connected member when the first attachment and the second attachment come into a connection state. The connecting member connects the first connected member and the second connected member with each other.

A connecting device connects a first attachment and a second attachment constituting a working machine with each other. The connecting device includes a first connected member, a second connected member, and a connecting member (connecting pin 15). The first connected member extends outward from a first side surface of the first attachment, the first side surface extending in a longitudinal direction of the first attachment. The second connected member extends outward from a second side surface of the second attachment, the second side surface extending in a longitudinal direction of the second attachment, the second connected member facing the first connected member when the first attachment and the second attachment come into a connection state. The connecting member connects the first connected member and the second connected member with each other.

The invention relates to an apparatus for compensating diagonal pull in cranes having at least one boom, having a boom drive for adjusting an angle and/or a length of the boom and/or for traveling a trolley, and having a control/regulation apparatus for controlling/regulating the boom drive. The invention is further directed to a crane having a corresponding apparatus.

A deck for use in construction, the deck comprising: a stationary support structure including at least a first box tube and a second box tube disposed parallel to the first box tube, the stationary support structure being positionable entirely within an edge of a floor of a building; a bottom plate extending between said first box tube and said second box tube; a first extension member disposed within the first box tube and being operable to retractably extend from the first box tube; a second extension member disposed within the second box tube and being operable to retractably extend from the second box tube; and a platform having one or more wheel structures located along one or more sides of the platform, wherein the one or more wheel structures are comprised of a wheel mount and one or more wheels and the one or more wheels are configured to roll along a top surface of the first box tube and/or a top surface of the second box tube, and wherein the platform is operable to retractably extend at least partly beyond the edge of the floor in conjunction with the first extension member and the second extension member.

A deck for use in construction, the deck comprising: a stationary support structure including at least a first box tube and a second box tube disposed parallel to the first box tube, the stationary support structure being positionable entirely within an edge of a floor of a building; a bottom plate extending between said first box tube and said second box tube; a first extension member disposed within the first box tube and being operable to retractably extend from the first box tube; a second extension member disposed within the second box tube and being operable to retractably extend from the second box tube; and a platform having one or more wheel structures located along one or more sides of the platform, wherein the one or more wheel structures are comprised of a wheel mount and one or more wheels and the one or more wheels are configured to roll along a top surface of the first box tube and/or a top surface of the second box tube, and wherein the platform is operable to retractably extend at least partly beyond the edge of the floor in conjunction with the first extension member and the second extension member.

A boom attach/detach device includes a boom, an extensible cylinder, and a boom supporting device. At least a part of the boom supporting device is arranged more to a boom front end side than an upper slewing body. When the extensible cylinder conducts extension and contraction operation in a state where coupling between the upper slewing body and the boom by a boom foot pin is cut off, the boom supporting device supports the boom to enable a rear end portion of the boom to move in a boom axis direction. The boom can be attached or detached with ease without a need to use a separate power device from a crane to suppress increases in size, in mass, and in cost of an upper slewing body.