A system for preventing rolling-over of vehicles is disclosed: The system may include: at least one camera attached to a portion of the vehicle such that images capture by the camera include a portion of the vehicle and a portion of a surrounding area; a communication module; and a controller configured to: receive from the camera, via the communication module, at least one image; receive data related to the parameters of the vehicle; calculate a relative position between the vehicle and a ground based on the received at least one image; calculate a location of the vehicle's center of gravity based on the received at least one image and the data related to the parameters of the vehicle; and determine a probability of rolling-over the vehicle based on the calculated center of gravity and the relative position.

A system for determining a lifting capacity of a pipelayer is provided. The system includes a load sensor configured to generate a signal indicative of a load suspended from a lifting hook, an angle sensor configured to generate a signal indicative of an angular position of a chassis relative to ground surface, a boom position sensor configured to generate a signal indicative of a position of a boom relative to an undercarriage, and a counterweight position sensor configured to generate a signal indicative of a position of a counterweight relative to the undercarriage. The system further includes a controller configured to receive the signal from each of the load sensor, the angle sensor, the boom position sensor, and the counterweight position sensor. The controller is also configured to determine the lifting capacity of the pipelayer based, at least in part, on the received signal.

A hydraulic crane comprising: —a rotatable column (7); —a crane boom system (10) comprising two or more liftable and lowerable crane booms (11, 13); and —an electronic control device (25), which is configured to prevent an execution of crane boom movements that would make the lifting moment of the crane exceed the maximum allowed lifting moment of the crane, and to continuously establish position information as to the prevailing position of the load suspension point (P) of the crane boom system. When the lifting moment of the crane has reached a limit value at a given level below the maximum allowed lifting moment, the electronic control device is configured to prevent the execution of any combination of crane boom movements that would increase the horizontal distance between the load suspension point and said vertical axis of rotation and at the same time allow the execution of any combination of crane boom movements that keeps said horizontal distance unchanged or reduces said horizontal distance.

Provided is an apparatus capable of preventing an auxiliary cylinder attached to a derricking member of a working machine from undesirable rotational movement. The apparatus includes an auxiliary cylinder capable of making expansion and contraction motions, an auxiliary-cylinder angle detector, a fixing device, and an expansion controller. The fixing device fixes the auxiliary cylinder to the derricking member when the expansion length of the auxiliary cylinder is in the fixing allowing range, and releases the fixing of the auxiliary cylinder at other times. The expansion controller judges the posture of the auxiliary cylinder based on the auxiliary-cylinder angle detected by the auxiliary-cylinder angle detector, allows the expansion and contraction motions when the auxiliary cylinder is in the vertical posture, and prohibits the auxiliary expansion and contraction motions when the auxiliary cylinder is in a posture other than the vertical posture and the auxiliary cylinder is fixed to the derricking member.

A crane information display system includes a terminal device having a camera, and obtains camera images by imaging, with the camera, a first information display unit that displays information. about a crane, the crane information display system including: a crane information acquisition unit that reads, from the camera images, display information of the first information display unit to acquire information about the crane; a virtual crane generation unit that generates a virtual crane image; a position/posture calculation unit that calculates, from the camera images, a position at which the virtual crane is to be disposed and a posture to be taken by the virtual crane; an information processing unit that converts the virtual crane image into an image that corresponds to the position and the posture of the virtual crane; and an image display unit that overlays and displays the virtual crane onto the camera images.

A wrecker vehicle includes a chassis, a boom coupled with the chassis, and a hoist device coupled with the chassis, the hoist device configured to engage a line to position a piece of equipment relative to the chassis. The vehicle may also include a controller configured to receive rigging setup data. The controller may further determine a first utilization state, wherein the first utilization state is a line load utilization state of the line, and a second utilization state, wherein the second utilization state is a first block load utilization state of a first sheave block. Further, the controller may be configured to determine, based on a comparison of the first utilization state to a first threshold and the second utilization state to a second threshold, a rigging setup state, and provide an indication of the rigging setup state.

An aid system for a wrecker adapted to perform a lifting operation of an object having a weight, the wrecker comprising an extendable boom wherein the extendable boom is adapted to perform the lifting operation through which the wrecker either hauls or lifts the object. The aid system comprises: sensors mounted to the wrecker adapted to collect intrinsic information associated with the wrecker and extrinsic information on the interaction of the wrecker with the operating environment or on the environment in which the lifting operation is performed; a processing unit adapted to collect and process data collected from the sensors to generate dynamic load chart data; and a display for displaying a graphical representation based on the dynamic load chart data, comprising a depiction of the wrecker and of a limit of an operating condition of the wrecker.

This crane information display system is provided with a terminal device having a camera and captures an image of a crane with the camera to obtain a camera image, the crane information display system including a crane information acquisition unit that reads display information of an information display unit, which is mounted in the crane, from the camera image and acquires information about the crane; a position/orientation calculation unit that calculates the position and orientation of the crane from the camera image; an information processing unit that converts the information about the crane acquired by the crane information acquisition unit into three-dimensional image information corresponding to the position and orientation of the crane calculated by the position/orientation calculation unit; and an image display unit that overlays the information about the crane converted by the information processing unit on the camera image and displays the same.

A spreader (24) comprises a main frame carrying container connector arrangements configured to engage with a transport container (10); a rotator enabling rotation of the main frame in relation to a crane bracket about a substantially vertical rotation axis (A2); a rotation motor configured to, responsive to a rotation control signal, operate the rotator to rotate the main frame; a rotation detector configured to detect rotation of the main frame in relation to the crane bracket; and a control system configured to, based on a discrepancy between the rotation control signal and a rotation detected by the rotation detector, generate a rotation alert signal.

A crane for lifting and transporting loads includes a base frame to transfer loads onto a support surface by a plurality of contacts in contact with the surface. An arm for lifting loads is rotatable relative to the base frame around a vertical axis. The angular range of the arm around the vertical axis includes angular fields, and load sensors. Each load sensor is associated with a respective contact to detect the force on the support surface. A control system obtains, from the load sensors, the value of the force, and detects the angular field where the arm is located. The control system determines a danger condition based on the values detected by the load sensors, according to different criteria in at least two different angular fields. The control system carries out predetermined functions of the crane, if the danger condition is reached.