A pantograph assembly may include a mast carriage assembly comprising a trunnion cross-member and a trunnion shaft coupled to the trunnion cross-member, and a pantograph mechanism coupled to the trunnion shaft.

A pneumatic cylinder actuated pallet jack assembly for mechanically lifting and lower a pallet includes a pallet jack, a plurality of pneumatic cylinders, and a compressor. The forks of the pallet jack are slidably coupled to a frame of the pallet jack. Each of a pair of rear rollers that is coupled to a respective fork distal from the frame and a roller module that is slidably coupled to the frame are selectively vertically positionable. A tow bar is pivotally coupled to the frame proximate to the roller module. Pneumatic cylinders are operationally coupled singly to each of the forks, the pair of rear rollers, and to the roller module, and the compressor. The compressor is positioned to selectively actuate respective pneumatic cylinders to size a gap between the forks and to raise the forks and the frame to lift a load that is positioned on the pallet.

The present disclosure discloses a hydraulic control system. The hydraulic control system may include a hydraulic module, a PLC control module, a hydraulic valve group control module, a manipulation module, and an action module. The manipulation module is connected with the PLC control module and is configured to input an operation instruction to the PLC control module; the PLC control module is respectively connected to the hydraulic module and the hydraulic valve group control module, and is configured to output a control signal corresponding to the operation instruction to the hydraulic valve group control module, and control the activation of the hydraulic module to provide hydraulic pressure to the hydraulic valve group control module; and the action module is connected with the hydraulic valve group control module, and is configured to perform an action corresponding to the control signal.

A Lifting device for a lifting carriage, such as for a rack serving apparatus, having a drive mechanism comprising a motor drive, a winding drum driven by the motor drive, and a belt that is unwound from and wound onto the winding drum and serves to lift and lower the lifting carriage along a mast, where the belt may advantageously be configured as a flat belt. A control roller is arranged between the winding drum and the lifting carriage such that an angle of wrap greater than 20 degrees of the belt around the control roller is achieved.

A materials handling vehicle including a load handling assembly having a mast assembly, and a fork carriage assembly including a fork support and at least one fork assembly, the at least one fork assembly including a first fork member, which is fixed to the fork support, and a second fork member. The vehicle includes a tilt assembly that tilts the fork support relative to the mast assembly such that a central axis of the at least one fork assembly is positionable in a plurality of different positions relative to a horizontal direction. The vehicle includes a fork extension/retraction assembly that moves the second fork member relative to the first fork member in a first direction that is parallel to the central axis such that the fork extension/retraction assembly selectively moves the second fork member toward or away from the fork support in the first direction.

A pantograph assembly may include a mast carriage assembly comprising a trunnion cross-member and a trunnion shaft coupled to the trunnion cross-member, and a pantograph mechanism coupled to the trunnion shaft.

A work vehicle includes a hydraulic actuator, a control valve, a pressure sensing unit, a force imparting component, and a controller. The hydraulic actuator varies a steering angle. The control valve controls flow of fluid supplied to the hydraulic actuator. The operation member is configured to be operated by an operator and to control the control valve when varying the steering angle. The pressure sensing unit senses a pressure produced by the hydraulic actuator. The force imparting component imparts an assisting force or a counterforce to operation of the operation member. The controller controls the force imparting component so as to generate resistance to operation of the operation member based on a pressure value sensed by the pressure sensing unit.

An operating head for an industrial truck comprises a support extending along a longitudinal axis and comprising opposing carrier sections. One or more gripping sections are positioned opposite each of the opposing carrier sections, wherein the opposing carrier sections and gripping sections at least partially define a handle opening. The operating head further comprises at least one operating element positioned on at least one of the opposing carrier sections. The at least one operating element comprises a cylindrical body extending along a cylindrical body axis and defining a bulge extending radially from the cylindrical body along a bulge axis. The bulge extends towards the one or more gripping sections when the at least one operating element is in a rest position and the at least one operating element is pivotable about the cylindrical body axis by exerting a force against the bulge.

A common connection apparatus for coupling a power tool to an extensible arm and a power supply, the apparatus including a tool support base designed to support a tool, and a power supply support base designed to be affixed to the end of the extensible arm. The tool support base and the power supply support base each include a plurality of power connectors, positioned for engagement when the bases are aligned. The tool support base also has an alignment stab, which is received within a channel of the power supply support base. A plurality of pins are further positioned on the tool support base, to be received in apertures of the power supply support base. By this configuration, the bases may be aligned and engaged, facilitating the transmission of power from the machinery to which the arm is affixed, to the tool.

A forklift includes a fuel cell system. The fuel cell system includes a battery stack and a capacitor and is electrically connected to a vehicle system. The vehicle system includes a control valve that switches supply of hydraulic oil to a power steering cylinder and a cargo-handling cylinder, a cargo-handling pump that supplies hydraulic oil stored in a hydraulic oil tank to the control valve, a cargo-handling motor that drives the cargo-handling pump, and an on-load valve that returns the hydraulic oil from the control valve to the hydraulic oil tank. The fuel cell system operates the fuel cell system to execute a warm-up control. A vehicle ECU continues supplying power from the fuel cell stack to the cargo-handling motor during the execution of the warm-up control.