Truck-type handling truck with a chassis and a back (40), and a low section, a nose plate attachment (41) and two wheels (71). The truck has a motor unit (60) mounted to the chassis (10) and an electric motor (61) connected to a differential transmission (62) with two lateral output shafts (621) and two track modules (50) each connected to a shaft (531) of the motor unit and mounted to swivel about this shaft independently between a position aligned with the chassis and a deployed position.

The present invention discloses a driving device capable of walking and stair-climbing by electric power which adopts a combination of a walking mechanism and a climbing carrier to create inventive planetary gear transmission principles. When walking on a flat ground, a driving part drives a sun gear to rotate in a positive direction, two walking wheels are in contact with the ground at the same time, the sun gear drives a planet gear to rotate in a negative direction around a planet shaft, and inner teeth and outer teeth of a gear ring rotate in the negative direction synchronously with the planet gear, thereby a transmission gear drives the walking wheel to rotate in the positive direction to realize rotation of walking. When climbing stairs, the sun gear rotates in the positive direction, the walking wheel is obstructed by stair, the transmission gear, the inner and outer teeth of the gear ring stop rotating, and the sun gear drives the planet gear to revolute along the inner teeth in the positive direction, thereby the planet shaft drives the climbing carrier to rotate in the positive direction to realize climbing cross obstacles. Thus, the present invention solves the problem of the known planetary wheel structure that the climbing carrier is driven to rotate in opposite direction when the walking wheel cannot rotate such and thus is difficult to realize the function of stair-climbing, and has advantages of simple structure and safe and reliable use.

Embodiments for a single user truck loader. A platform is configured to receive placement of a load. Wheels are disposed at locations of the platform. A dolly mechanism is disposed in a cavity formed in the platform. Sidewalls of the platform house the cavity. The cavity of the platform is configured to receive a lift deck of a lifting mechanism.

A modular and lightweight Stair Climber for Caskets is provided. The Stair Climber for Caskets is uniquely designed and configured with a trolley frame and four sets of wheels arranged and affixed at the four ends of the trolley frame respectively. In the depicted embodiment, each set of wheels comprises three wheels spaced an equal distance from each other that rotate together about a horizontal axis for easy navigation. The Stair Climber for Caskets further comprises wheel plates attached to the set of wheels. The Stair Climber for Caskets is designed ergonomically with the right configuration for ensuring easy movement up and down stairs of different heights and inclinations.

A planetary wheel type obstacle crossing robot, including a frame, a front drive set, and a rear drive set, is provided. The front drive set and the rear drive set are respectively connected to a front end and a rear end of the frame. The front drive set includes a dual-drive steering wheel structure, which includes two drive wheels and two first drive devices. The first drive devices respectively output different rotational speeds to the drive wheels, so that the dual-drive steering wheel structure rotates. The rear drive set includes two planetary wheel sets, two second drive devices, and a planetary wheel set suspension structure. Each planetary wheel set is individually driven and includes a front wheel, a rear wheel, and an upper wheel. The wheels of each planetary wheel set cooperate to climb over an obstacle under an action of a driving torque output by the second drive device.

The stair-climbing wheeled carrier has a U-shaped frame defined by a pair of elongated parallel handles and a crossbeam extending between the ends of the handles. Each handle has an axle mount depending therefrom having a star wheel or spider wheel mounted thereon. A dual shaft worm drive motor is mounted on the frame, the shafts driving chain drives connected to the wheels. A throttle extends from one of the handles, and controls leaf springs that operate switches for actuating the reversible motor and returning the throttle to neutral when released. A payload is attached to brackets mounted on the handles. The payload may be a seat for a person needing assistance attending/descending stairs, or a basket for carrying packages or other items upstairs. In use, an assistant uses the handles to support the frame while operating the motor to activate the wheels for climbing stairs.

A hand-truck frame system includes a main frame, a bed frame, and pair of multi-wheel assembles coupled to the main frame and rotatable to provide improved climbing capabilities over certain terrain, such as stairs. The multi-wheel assemblies can have four wheels radially mounted about respective hubs of the first and second multi-wheel assemblies.

A multi-wheel system that minimizes wheel interactions with discontinuous and uneven surfaces. The multi-wheel system comprises wheels of varying diameters connecting to a rotating arm configured to raise and lower the wheels in response to obstacles along the rolling surface.

An apparatus and system for facilitating the controlled ascent and descent of stepped or irregular inclines, such as a set or flight of stairs. In an embodiment, the invention comprises an apparatus and system that allows an operator to safely transport a heavy load up or down a flight of stairs. The invention may be utilized with, attached to or incorporated within a transporting carrier, such as a hand truck or hand cart, for transporting heavy cargo up or down stepped or irregular inclines. In an embodiment, the invention allows a wheel to rotate freely in one direction while regulating the rotation of said wheel in the opposite direction such that a braking force in said opposite direction is proportional to the apparent weight and angle of inclination of said carrier. In operation, a gravitationally induced increase in an apparent weight activates the invention's braking system, thereby providing a braking force to the carrier wheel.

A modular and lightweight Stair Climber for Caskets is provided. The Stair Climber for Caskets is uniquely designed and configured with a trolley frame and four sets of wheels arranged and affixed at the four ends of the trolley frame respectively. In the depicted embodiment, each set of wheels comprises three wheels spaced an equal distance from each other that rotate together about a horizontal axis for easy navigation. The Stair Climber for Caskets further comprises wheel plates attached to the set of wheels. The Stair Climber for Caskets is designed ergonomically with the right configuration for ensuring easy movement up and down stairs of different heights and inclinations.