An automated guided vehicle includes a chassis and a load supporting apparatus positioned on the chassis, the load supporting apparatus including a platform to support a load, one or more weight sensors located in contact with the platform, the one or more weight sensors configured to provide a signal indicative of a weight of the load on the platform, and an electronic processor arranged in electronic communication with the one or more weight sensors. The electronic processor is configured to receive the signal from each of the one or more weight sensors, and the electronic processor is configured to process the signal and determine stability of the load on the platform.

An industrial truck (2) with a lift mast (4), a hydraulic system (10), and a method for operating a hydraulic system (10). The lift mast (4) of the industrial truck (2) is driven by a mast lift cylinder (12) and includes at least one mast lift stage (42). A free lift stage is present that is driven by a free lift cylinder (8) with which a load receiving means (6) can be displaced along the lift mast (4). The industrial truck (2) includes a hydraulic system (10) for supplying the at least one mast lift cylinder (12) and the at least one free lift cylinder (8) with a hydraulic fluid (14). The hydraulic system (10) is configured to at least at times simultaneously actuate the at least one mast lift cylinder (12) and the at least one free lift cylinder (8) in load lifting operation and/or in load lowering operation.

An industrial truck (2) with a lift mast (4), a hydraulic system (10), and a method for operating a hydraulic system (10). The lift mast (4) of the industrial truck (2) is driven by a mast lift cylinder (12) and includes at least one mast lift stage (42). A free lift stage is present that is driven by a free lift cylinder (8) with which a load receiving means (6) can be displaced along the lift mast (4). The industrial truck (2) includes a hydraulic system (10) for supplying the at least one mast lift cylinder (12) and the at least one free lift cylinder (8) with a hydraulic fluid (14). The hydraulic system (10) is configured to at least at times simultaneously actuate the at least one mast lift cylinder (12) and the at least one free lift cylinder (8) in load lifting operation and/or in load lowering operation.

A waste pump removal apparatus for removing pumps from reception areas for maintenance. The waste pump removal apparatus includes a frame having front and back ends, a top and a bottom; a loader attachment coupled to the back end of the frame and adapted to mount to a loader; a pump attachment pivotably connected to the front end of the frame and adapted to be coupled to a waste pump; and an actuator mounted to the frame and in communication with the pump attachment for pivoting the pump attachment relative to the frame to remove the waste pump from a reception area.

A waste pump removal apparatus for removing pumps from reception areas for maintenance. The waste pump removal apparatus includes a frame having front and back ends, a top and a bottom; a loader attachment coupled to the back end of the frame and adapted to mount to a loader; a pump attachment pivotably connected to the front end of the frame and adapted to be coupled to a waste pump; and an actuator mounted to the frame and in communication with the pump attachment for pivoting the pump attachment relative to the frame to remove the waste pump from a reception area.

The invention relates to an industrial truck, in particular a tri-lateral stacker, comprising a mast (8), a lateral push frame (34) that can move up and down on the mast (8), a lateral pusher (38) that is mounted on the lateral push frame (34) so as to be laterally movable transversely to the main direction of travel (G) of the industrial truck, so that said pusher has a degree of freedom of movement along the lateral push frame (34) that is oriented laterally, transversely to the main direction of travel (G) of the industrial truck, a load-supporting apparatus (36) that is arranged on the lateral pusher (38) and can move laterally, together with the lateral pusher (38), transversely to the main direction of travel (G) of the industrial truck using its degree of freedom of movement, a lateral push drive device (52) that can be controlled by a control device of the industrial truck for moving the lateral pusher (38) and the load-supporting apparatus (36) together along the lateral push frame (34), and comprising a device for reducing transverse vibrations, in particular vibrations having vibration components that are transverse to the main direction of travel (G) of the industrial track, wherein the industrial truck is characterised in that, in a vibration-damping operating mode, the lateral push drive device (52) can be operated as a component of the device for reducing vibrations, wherein, in the vibration-damping operating mode, said device allows the lateral pusher (38) to move relative to the lateral push frame (34) so as to reduce vibrations.

The invention relates to an industrial truck, in particular a tri-lateral stacker, comprising a mast (8), a lateral push frame (34) that can move up and down on the mast (8), a lateral pusher (38) that is mounted on the lateral push frame (34) so as to be laterally movable transversely to the main direction of travel (G) of the industrial truck, so that said pusher has a degree of freedom of movement along the lateral push frame (34) that is oriented laterally, transversely to the main direction of travel (G) of the industrial truck, a load-supporting apparatus (36) that is arranged on the lateral pusher (38) and can move laterally, together with the lateral pusher (38), transversely to the main direction of travel (G) of the industrial truck using its degree of freedom of movement, a lateral push drive device (52) that can be controlled by a control device of the industrial truck for moving the lateral pusher (38) and the load-supporting apparatus (36) together along the lateral push frame (34), and comprising a device for reducing transverse vibrations, in particular vibrations having vibration components that are transverse to the main direction of travel (G) of the industrial track, wherein the industrial truck is characterised in that, in a vibration-damping operating mode, the lateral push drive device (52) can be operated as a component of the device for reducing vibrations, wherein, in the vibration-damping operating mode, said device allows the lateral pusher (38) to move relative to the lateral push frame (34) so as to reduce vibrations.

The lifting mechanism includes a battery, an electric machine, a hydraulic pump, an oil tank, a hydraulic cylinder, a work platform and a proportional valve or switch valve. In the energy-regeneration mode, the hydraulic fluid drives the hydraulic pump to operate as a hydraulic motor, thus in turn driving the electric machine to operate as a generator and charge the battery. In the present application, the hydraulic pump operates to increase a pressure in a hydraulic line between the hydraulic pump and the proportional valve or switch valve before the proportional valve or switch valve is switched from a unidirectional communication position to a bidirectional communication position. When the proportional valve or switch valve is switched from the unidirectional communication position to the bidirectional communication position, by increasing the pressure in the hydraulic line, it could be avoided that the volume of hydraulic fluid has low pressure is compressed because the hydraulic fluid has low pressure is communicated with hydraulic fluid has high pressure; therefore a state of sudden drop of the work platform is avoided, and safety performance and operating experience of the lifting mechanism is improved.

A device recovers energy in working machines with at least one power drive actuated to move a load mass back and forth and with an energy storage system (16) absorbing the energy released in the movement of the load mass in one direction and making it available for a subsequent movement in the other direction. The energy storage system includes an accumulator cylinder (16) mechanically coupled to the load mass and storing pneumatic pressure energy for movement in one direction. For movement in the other direction, the accumulator cylinder acts as an auxiliary working cylinder supporting the power drive and converting the stored pressure energy into driving force.

A device recovers energy in working machines with at least one power drive actuated to move a load mass back and forth and with an energy storage system (16) absorbing the energy released in the movement of the load mass in one direction and making it available for a subsequent movement in the other direction. The energy storage system includes an accumulator cylinder (16) mechanically coupled to the load mass and storing pneumatic pressure energy for movement in one direction. For movement in the other direction, the accumulator cylinder acts as an auxiliary working cylinder supporting the power drive and converting the stored pressure energy into driving force.