The present invention discloses a lifting mechanism mounted on a lifting device, wherein the lifting device includes a carrying unit. The lifting mechanism is disposed under the carrying unit, and comprises a driving assembly and a lifting assembly. The driving assembly includes an axle fixing part, a drive wheel and a power source, and the lifting assembly includes a screw nut and a screw rod. An upper end of the screw rod is fixedly connected to the carrying unit. When the lifting mechanism is traveling, each drive wheel is in contact with a base surface and moves the lifting device on the base surface; and when lifting, each drive wheel rotates on the base surface to drive the screw nut to rotate about a vertical axis relative to the carrying unit, to drive the screw rod to lift the carrying unit along the vertical direction.

A lift device includes a base, an arm, a drive actuator, 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 drive actuator is pivotally coupled to the tractive element end of the arm. The tractive element is coupled to the drive actuator. The steering actuator has a first end coupled to the steering actuator interface and an opposing second end coupled to the drive actuator. The arm includes a plate extending forward of the exterior surface of the arm and past the steering actuator.

A lift device includes a base having a first end and an opposing second end, a first arm pivotally coupled to the first end, a second arm pivotally coupled to the first end, a third arm pivotally coupled to the opposing second end, a fourth arm pivotally coupled to the opposing second end, and a leveling assembly. The leveling assembly includes a first actuator extending between the first arm and the first end, a second actuator extending between the second arm and the first end, a third actuator extending between the third arm and the opposing second end, a fourth actuator extending between the fourth arm and the opposing second end, and a controller configured to control the first actuator, the second actuator, the third actuator, and the fourth actuator to reconfigure the leveling assembly between (i) a shipping, transport, or storage mode and (ii) an operational mode.

A lift device includes a chassis, a first actuator coupled to the chassis, a second actuator coupled to the chassis, a third actuator coupled to the chassis, a fourth actuator coupled to the chassis, and a fluid circuit. The fluid circuit is configured to facilitate selectively fluidly coupling the first actuator, the second actuator, the third actuator, and the fourth actuator in at least four different configurations where, in each of the at least four different configurations, two of the first actuator, the second actuator, the third actuator, and the fourth actuator are fluidly coupled together while the other two of the first actuator, the second actuator, the third actuator, and the fourth actuator are fluidly decoupled.

The present invention provides a pallet carrier, comprising a carrier frame structure; a fork structure disposed on the carrier frame structure; a driving wheel structure comprising driving wheels that are articulated to the carrier frame structure, wherein each one of the driving wheels is set as a one-piece wheel structure integrated with a driving motor and a hub. The pallet carrier has the advantages of simple structure and work reliability.

Systems and methods for a floor conveyor include a sensor device and a control unit, wherein the control unit is operable to control the travel functions of the floor conveyor, wherein the sensor device is arranged to be able to provide the control unit with sensor data, wherein the sensor device is arranged such that it can detect objects in a plane. The plane is arranged to a have a follow section and a steer away section. And the floor conveyor is arranged such that it can determine an object to follow.

Systems and methods for a floor conveyor include a control unit and a sensor device, the control unit operable to control the travel functions of the floor conveyor, the sensor device arranged to be able to provide the control unit with sensor data, the sensor device arranged such that it can detect objects in a plane, the plane extending along the a first side of the floor conveyor, the plane comprises a stop section, the floor conveyor arranged such that if an object is detected in the stop section the floor conveyor is stopped by control of the travel function from the control unit upon receipt by it of a sensor data indicating the object being positioned in the stop section, the stop section also extending along a section of a second side of the floor conveyor, the second side being essentially perpendicular to the first side.

A materials handling vehicle comprises an obstacle scanning tool and steering mechanism, materials handling hardware, vehicle drive mechanism, and user interface that facilitate movement of the materials handling vehicle and materials handled along a travel path. The tool establishes a scan field, a filter field, and a performance field, and is configured to indicate the presence of obstacles in the filter field and the performance field. The tool executes logic to establish the performance field in response to an input performance level, scan for obstacles in the filter field and the performance field, execute obstacle avoidance for obstacles detected in the filter field, and execute a performance level reduction inquiry for obstacles detected in the performance field wherein outcomes of the inquiry comprise reduction of the performance level when a performance level reduction is available and execution of obstacle avoidance when a performance level reduction is not available.

A device for the deaeration of a hydraulic fluid of a hydraulic system has at least one hydraulic motor arrangement and a hydraulic fluid storage which is hydraulically coupled with this hydraulic motor arrangement. A suction device for sucking out the hydraulic fluid is associated with the at least one hydraulic motor arrangement such that the suction device guides hydraulic fluid out of the hydraulic motor arrangement into the hydraulic fluid storage by means of vacuum pressure (p). The suction device is constructed as a jet pump and is integrated in the return line between the hydraulic motor arrangement and hydraulic fluid storage.

Provided is a forklift capable of recognizing an approximate weight of an object to be conveyed supported by a fork without adding special parts. A control unit includes a storage unit which stores load/time information indicating a relationship between a delay time required for an angle of rear wheels to reach an angle corresponding to an angle of the steering wheel and a weight of the object to be conveyed supported by the fork at that time, a delay time detection unit which detects the delay time required for a steering angle of the rear wheels to reach the angle corresponding to the angle of the steering wheel, and a weight identifying unit which identifies the weight of the object to be conveyed supported by the fork on the basis of the delay time detected by the delay time detection unit and the load/time information stored in the storage unit.