A material handling vehicle may include a clamp assembly, the clamp assembly including a housing, a grip assembly, and a power source. The grip assembly may be pivotally engaged with the housing. The power source may be in electrical communication with the grip assembly. The grip assembly includes a lobe pivotally engaged with the housing and a contact supported by the lobe, the contact being electrically conductive.

A movable battery replacing platform includes a travel-driving portion used for driving the movable battery replacing platform to move on the ground; a lifting portion mounted on the travel-driving portion, for lifting a battery during the replacement of the battery; and a battery mounting portion mounted on the top of the lifting portion, for placing a battery to be replaced or a replaced battery. The battery mounting porting is provided with a battery replacing device. The device can use an unlocking device to unlock a battery locked on the bottom of an electric vehicle, automatically aligning an unlocking point of a battery locking mechanism and realizing automatic unlocking in the movement. The angle of an upper board relative to the battery unlocking position can be adjusted by a movement actuating device, so that the unlocking point of the battery can automatically fit where the movable battery replacing platform remains still.

A portable frame is configured to be transported by the forks of a fork lift truck and has hydraulic lines releasably connectable to the auxiliary hydraulic fluid pressure system of the fork lift truck. A valve and a set of hydraulic lines are mounted on the portable frame for releasable connection to the hydraulic fluid lines of a tillage machine so that an inexpensive fork lift truck may be utilized to test operation of hydraulically actuated tillage components.

A robotic service device is described for use on a robotic picking system grid. The robotic service device is capable of driving to any location on the grid order to perform maintenance operations or cleaning. Additionally, the service device may be used to rescue robotic load handling devices operational in the picking system. The robotic service device may include a releasable docking mechanism to enable it to dock and latch on to malfunctioning load handling devices. The service device may also be provided with cleaning capability and a camera to enable the condition of the grid and other robotic devices to be monitored.

A braking system of an industrial vehicle includes an accumulator accumulating hydraulic oil, a hydraulic oil cooler cooling the hydraulic oil, an electromagnetic switch valve switching between an oil channel for the accumulator that allows supplying the hydraulic oil from a hydraulic pump to the accumulator and an oil channel for the hydraulic cooler that allows supplying the hydraulic oil from the hydraulic pump to the hydraulic oil cooler, and a controller controlling the electromagnetic switch valve to switch from the oil channel for the hydraulic cooler to the oil channel for the accumulator with timing of an increase after a drop in an engine speed when a cargo-handling operation is detected while an oil is at a setting pressure value or less and while the engine speed is at a setting engine speed or less.

A pallet jack assembly for use with a pallet jack is provided. The pallet jack assembly includes a tug assembly configured for attachment to a towing vehicle and a frame assembly configured to support the tug assembly. A plurality of caster assemblies is supported by the frame assembly. Each of the caster assemblies is configured to support a wheel. The pallet jack assembly facilitates use of the pallet jack as a hand-powered pallet jack or for towing by a towing vehicle.

A layover bracket system is disclosed for supporting an industrial vehicle in a horizontal position. The layover bracket system includes a layover bracket removably coupled to a proximal end portion of the industrial vehicle, the layover bracket including at least one wheel for moving the layover bracket system with the industrial vehicle supported thereon while the industrial vehicle is in the horizontal position. The layover bracket supports the proximal end portion of the industrial vehicle when the industrial vehicle is in a horizontal position and allows the layover bracket system and industrial vehicle to roll on the at least one wheel of the layover bracket. The layover bracket system may also include a support bracket for supporting a distal end of the industrial vehicle while the vehicle is in the horizontal position.

A forklift includes a vehicle frame, wherein at least one load rest platform is movably arranged on the vehicle frame. The at least one load rest platform is movable between a storage position, in which no load can be deposited on the at least one load rest platform, and a working position, in which a load can be deposited on the at least one load rest platform. The at least one load rest platform is aligned essentially horizontally when moved to the working position, and the at least one load rest platform is movably arranged on an upper surface of the vehicle frame via at least one articulating joint. The at least one articulating joint connects the at least one load rest platform with a side face of the vehicle frame.

Lift truck attachment assemblies are shown and disclosed. In some embodiments, the lift truck attachment assembly includes a carriage assembly having a carriage and a linear actuator attached to the carriage. The carriage is mountable to a lift truck, and the linear actuator includes a body and longitudinally opposed piston rods slidably received in the body, each of the piston rods having an end. The attachment assembly additionally includes a frame assembly slidably connected to the carriage. The frame assembly includes upper and lower transverse frame members and end vertical frame members connecting the upper and lower transverse frame members in a spaced relationship to define a frame central cavity therebetween. The linear actuator is disposed within the frame central cavity such that the ends of the piston rods contact the end vertical frame members allowing the linear actuator to slide the frame assembly laterally relative to the carriage assembly.

An accessory arm for a lift truck includes at least one rear attachment mechanism affixed to a rear overhead guard leg of the lift truck and a front attachment mechanism affixed to a front overhead guard leg of the lift truck. The accessory arm further includes an accessory bar rotationally mounted to the at least one rear attachment mechanism and to engage with the front attachment mechanism when the accessory bar is in a closed position. A wiring harness connected to a battery of the lift truck and routed within the accessory bar to a device mounted to the accessory bar, the wiring harness to provide power to the device.