A lightweight, manually portable load carrying device with two wheels can raise and lower light to medium loads placed on its nose plate, using the torque of an electric motor. By this means, the traditional nose plate is used as a “lift plate,” and cargo can be raised or lowered to be placed in or taken out of motor vehicles, or onto and off of ledges, tables, counters or shelves, or any other elevated platform which would otherwise require manual lifting to reach.

A lifting column can provide optimized performance with a nut gap system that efficiently and precisely measures a nut gap during lifting operations. The nut gap system can have a rotating core onto which a nut and traveler are positioned. The nut can be separated from the traveler by a nut gap that is monitored by at least one sensor that continuously extends through the nut to access the nut gap.

A lifting device for lifting various vessels includes a two-speed boat lift transmission enables a boat lift to operate at two speeds, i.e. a high speed when the lift is empty or when lowering a boat, and a low speed when lifting the boat. The worm gear drive acts as a speed reducer and it provides locking, so the boat lift cannot back drive. The novel idea of incorporating a harmonic drive differential transmission into the gearbox assembly allows the use of two inputs and ratios, enabling both high speed and low speed operation.

A lifting device for lifting various vessels includes a two-speed boat lift transmission enables a boat lift to operate at two speeds, i.e. a high speed when the lift is empty or when lowering a boat, and a low speed when lifting the boat. The worm gear drive acts as a speed reducer and it provides locking, so the boat lift cannot back drive. The novel idea of incorporating a harmonic drive differential transmission into the gearbox assembly allows the use of two inputs and ratios, enabling both high speed and low speed operation.

A steel wire self-locking mechanism and a lifting device are provided. The steel wire self-locking mechanism includes a surrounding plate and a self-locking gear and a locking device arranged in the surrounding plate, and uses a friction force of a threaded sleeve to lock the lifting device. The lifting device includes a lifting assembly and a beam assembly. The steel wire self-locking mechanism is arranged in the beam assembly, and the locking of the lifting device is realized by the steel wire self-locking mechanism. The steel wire self-locking mechanism and the lifting device have good adaptability. Due to a smaller volume, the steel wire self-locking mechanism is applicable to lifting tables in various sizes.

A lifter is disclosed. The disclosed lifter comprises: a frame; a motor part coupled to the frame; a drum rotatably coupled to the motor part and including a plurality of winding parts formed at regular intervals along the rotary shaft direction; and a plurality of wires coupled to be wound on the plurality of winding parts, respectively. Ends of the plurality of wires at one side thereof may be connected to the plurality of winding parts, respectively, and other ends of the plurality of wires may be detachably fixed to a ceiling.

The present disclosure relates to a vehicle lift which is equipped with a safety assembly preventing a load-carrier arm to pivot once the vehicle is being lifted. The vehicle lift includes a lifting post which has a base, an upward post extending from the base, a carriage which is slidably and operatively mounted to the post structure, as well as a pivotable load-carrier arm pivotally mounted to the carriage for providing a support to the vehicle being lifted. Pivot of the arm provides positioning and adjustment beneath the vehicle. The vehicle lift further includes an arm restraint coupled to the load-carrier arm. The arm restraint is configured to operate between a released configuration, where a portion of the arm restraint engages with the base, thereby allowing the load-carrier arm to pivot, and a locked configuration, where the arm restraint is positioned above the base, thereby preventing the load-carrier arm from pivoting.

The present disclosure relates to a vehicle lift which is equipped with a safety assembly preventing a load-carrier arm to pivot once the vehicle is being lifted. The vehicle lift includes a lifting post which has a base, an upward post extending from the base, a carriage which is slidably and operatively mounted to the post structure, as well as a pivotable load-carrier arm pivotally mounted to the carriage for providing a support to the vehicle being lifted. Pivot of the arm provides positioning and adjustment beneath the vehicle. The vehicle lift further includes an arm restraint coupled to the load-carrier arm. The arm restraint is configured to operate between a released configuration, where a portion of the arm restraint engages with the base, thereby allowing the load-carrier arm to pivot, and a locked configuration, where the arm restraint is positioned above the base, thereby preventing the load-carrier arm from pivoting.

A vertical moving method of a vertical moving unit on which a conveyance target object is mounted includes steps of causing a non-electric biasing unit to generate a biasing force to raise the vertical moving unit, causing an electric motor unit to generate a thrust in a direction to raise the vertical moving unit or a thrust in a direction to lower the vertical moving unit, and causing an electromagnetic brake unit to generate a braking force to resist a movement of the vertical moving unit. Independently of presence/absence of the object and a weight of the object, the thrust and/or the braking force is controlled such that the vertical moving unit stops when an external force of overload more than a predetermined value acts on the vertical moving unit during a vertical movement.

A vertical moving method of a vertical moving unit on which a conveyance target object is mounted includes steps of causing a non-electric biasing unit to generate a biasing force to raise the vertical moving unit, causing an electric motor unit to generate a thrust in a direction to raise the vertical moving unit or a thrust in a direction to lower the vertical moving unit, and causing an electromagnetic brake unit to generate a braking force to resist a movement of the vertical moving unit. Independently of presence/absence of the object and a weight of the object, the thrust and/or the braking force is controlled such that the vertical moving unit stops when an external force of overload more than a predetermined value acts on the vertical moving unit during a vertical movement.