An industrial truck includes a drive part with a drive frame and a load part. The load part includes a lift frame having a load frame, which includes a plate, a load-carrying means connected to the plate, and at least one bearing head configured to receive a lift cylinder. The at least one bearing head is connected to the plate.

A hydraulic system for controlling bleed down and retraction of a boom within a safety envelope includes a backup battery power supply, and at least a first boom lift hydraulic cylinder configured to raise and lower the boom. The first boom lift hydraulic cylinder includes a solenoid bleed valve electrically connected to the backup battery power supply. The hydraulic system also includes an input device controllable by an operator of the boom. The input device may, for instance, be used by the operator to initiate bleed down and retraction of the boom from an elevated position. To accommodate independent failsafe features of the system, the input device is configured to selectively actuate the solenoid bleed valve using electrical power supplied from the backup battery power supply.

The invention relates to a method (100) of operating an actuator arrangement including at least two types of actuators (6, 7, 11, 12, 30, 34) effectuating different types of movement of a connected device (10, 32) to be actuated, where a change of attitude of the connected device (10, 32) has an influence on the position of at least a defined part (13, 14) of the connected device (10, 32). Different types of actuators (6, 7, 11, 12, 30, 34) are actuated in an automated way to at least partly compensate for the change of position of the defined part (13, 14) of the connected device (10, 32) when changing the attitude of the connected device (10, 32), at least for a certain range of movements.

A tipper assembly includes a base configured to couple to a tailgate of the refuse vehicle and an actuator assembly comprising an actuator and a transmission device. The actuator may be coupled to the transmission device and may be configured to provide an input to the transmission device. The transmission device may be configured to reduce a speed of the input. The tipper assembly further includes an arm extending from and pivotally coupled to at least one of the actuator assembly or the base and an implement coupled to the arm. The implement may be configured to engage with a refuse container and facilitate the dumping of contents within the refuse container into an opening in the tailgate.

A tipper assembly includes a base configured to couple to a tailgate of the refuse vehicle and an actuator assembly comprising an actuator and a transmission device. The actuator may be coupled to the transmission device and may be configured to provide an input to the transmission device. The transmission device may be configured to reduce a speed of the input. The tipper assembly further includes an arm extending from and pivotally coupled to at least one of the actuator assembly or the base and an implement coupled to the arm. The implement may be configured to engage with a refuse container and facilitate the dumping of contents within the refuse container into an opening in the tailgate.

A system and method of operating a variable-speed electrohydraulic pump, in which a pump delivery mechanism having an adjustable control volume is driven by an electric machine, includes activating the variable-speed electrohydraulic pump with a specific control volume and a specific speed, such that a specific volume flow is provided. The method includes obtaining control information for an actuator which indicates an increase in the volume flow and increasing the speed and reducing the control volume in response to the obtained control information. The method includes activating the variable-speed electrohydraulic pump to increase the volume flow after increasing the speed and reducing the control volume.

Hydraulic valve circuitry adapted for hydraulic connection to a lift truck having a mast and at least one lift cylinder for alternately raising and lowering the mast. The hydraulic assembly is also adapted for hydraulic connection to an attachment to the lift truck, the attachment having opposed clamps actuated by respective clamp cylinders. The hydraulic assembly preferably comprises a valve circuit capable of causing the at least one lift cylinder to be an accumulator.

Hydraulic valve circuitry adapted for hydraulic connection to a lift truck having a mast and at least one lift cylinder for alternately raising and lowering the mast. The hydraulic assembly is also adapted for hydraulic connection to an attachment to the lift truck, the attachment having opposed clamps actuated by respective clamp cylinders. The hydraulic assembly preferably comprises a valve circuit capable of causing the at least one lift cylinder to be an accumulator.

The articulated self-propelled work machine (1), such as, for example, an articulated telescopic handler or the like, comprises: a front frame (11), provided with a pair of front wheels (111); a lift arm (2), adapted to support a load, hinged to the front frame (11) and mobile with respect thereto by means of at least one actuator (21, 22); a rear frame (12), provided with a pair of rear wheels (121) and articulated to the front frame (11); detecting means (51, 53, 54) for detecting an angular parameter relative to a steering angle between the front frame (11) and the rear frame (12); and electronic processing means (6) configured to control the operation of the actuator (21, 22) on the basis of the angular parameter.

The articulated self-propelled work machine (1), such as, for example, an articulated telescopic handler or the like, comprises: a front frame (11), provided with a pair of front wheels (111); a lift arm (2), adapted to support a load, hinged to the front frame (11) and mobile with respect thereto by means of at least one actuator (21, 22); a rear frame (12), provided with a pair of rear wheels (121) and articulated to the front frame (11); detecting means (51, 53, 54) for detecting an angular parameter relative to a steering angle between the front frame (11) and the rear frame (12); and electronic processing means (6) configured to control the operation of the actuator (21, 22) on the basis of the angular parameter.