An autonomously-guided industrial truck comprising a vehicle frame defining, in a plan view, a vehicle contour in sections. The vehicle frame comprises three structural levels, arranged one above the other in a vertical direction, each with its own contour. The three structural levels include a lower structural level in which a base structure is attached, an upper structural level with a covering, and a middle structural level comprising a frame structure for connecting the lower structural level and the upper structural level. The industrial truck includes at least one drive wheel assigned to the vehicle frame to stand below the vehicle frame on a driving surface and at least one scanner unit arranged completely within the vehicle contour such that a scanning plane of the at least one scanner unit lies at least in sections vertically in a region of the middle structural level.

Apparatus and methods for lifting loads are described. The load lift includes a support frame and a lift assembly with main cylinder and at least one standby cylinder connecting a rotatable cross beam with a clamp plate. A rotary actuator assembly is connected to the lift beam to move the lift assembly out of the way while not in use by rotating the lift assembly from a lift position to a standby position.

Apparatus and methods for lifting loads are described. The load lift includes a support frame and a lift assembly with main cylinder and at least one standby cylinder connecting a rotatable cross beam with a clamp plate. A rotary actuator assembly is connected to the lift beam to move the lift assembly out of the way while not in use by rotating the lift assembly from a lift position to a standby position.

A health monitoring system for a crane (10) includes a wheel assembly (50, 70) having a wheel (120) with an axle (160) defining an axis (172) of rotation of the wheel. The health monitoring system further includes a plurality of strain gauges (208) coupled to the axle at circumferential locations around the axis of rotation. The strain gauges continuously detect strains experienced at the wheel. The health monitoring system further includes a data acquisition system (200) coupled to the wheel that receives data from the strain gauges corresponding to detected strains. The health monitoring system further includes a main controller (204) coupled to the data acquisition system. The main controller receives data from the data acquisition system corresponding to the detected strains, uses the data to calculate loading applied to the wheel assembly continuous in real-time in both a first direction, a second direction perpendicular to the first direction, and a third direction perpendicular to both the first direction and the second direction

A lift device includes a base, an arm, a tractive element, and a steering actuator. The arm has a base end coupled to the base and a tractive element end. The arm includes a steering actuator interface positioned along an exterior surface of the arm. The tractive element is coupled to the tractive element end. The steering actuator has a first end coupled to the steering actuator interface and an opposing second end coupled to the tractive element. The arm includes a plate extending from the exterior surface of the arm at an upward angle and past the steering actuator.

A work vehicle for maintenance of an electrical catenary includes a vehicle frame supported on on-track undercarriages and a vehicle superstructure situated on the vehicle frame. A first grounding device is disposed at a first vehicle end relative to a longitudinal direction of the vehicle. A crane having a vertically and transversely adjustable work platform is disposed at an opposite, second vehicle end. A second grounding device is provided at the second vehicle end.

A materials handling vehicle includes a mast, a load handling structure supported on the mast, one or more operator controls, and a lifting structure having a chain structure for performing a lifting and lowering of the load handling structure. The materials handling vehicle further includes a height sensor for generating a height signal corresponding to vertical movement of the load handling structure relative to the mast, and a vehicle control module for processing the height signal received from the height sensor and an operator control signal received from the one or more operator controls. The vehicle control module evaluates the height signal and the operator control signal and disables one or more vehicle functions if the height signal does not correspond to the operator control signal.

The scissor lift platform includes a frame resting on the ground by connecting members, a platform, a device for lifting the platform, including a set of jointed bars supporting the platform, so the elevation of the platform relative to the frame is variable and controlled by the set of bars, the set of bars including four lower bars defining parallel pairs hinged to four lower articulation blocks connected to the frame, the set of bars also including four upper bars defining parallel pairs hinged to four upper articulation blocks connected to the platform, and at least four sensors each measuring a reaction force, the sensors each having a lower or upper articulation block. Each articulation block/sensor includes first and a second portions. Each sensor is positioned between the first portion of the articulation block in which the sensor is mounted and the second portion of the articulation block.

A system for protecting an operator on an aerial work platform from a crushing hazard includes a sensor, such as opto-electric sensor, positionable adjacent the control panel area. A control system is programmed to control operation of the driving components based on signals from the sensor.

The present invention relates to a lifting system and method for lifting a vehicle, wherein the lifting system including one or more lifting devices and: a frame with a carrier configured for carrying the vehicle; a drive for driving the carrier in at least one of the ascent or descent of the carrier; and a controller including an indoor positioning system with a transponder, wherein the transponder is provided on or at the carrier such that the controller determines the location and the height of the carrier in at least one of the ascent or descent of the carrier.