Spiral-driven Elevators Reduce The Occurrence Of Accidents

Posted by otsedtalex on May 6th, 2019

A double screw elevator consists of two screws that helical threads extend in opposite sides directions, and each of the screws is provided with a nut, so that a suspension unit and a carrying unit on the nuts can be driven to move close to or away from Each other, such achieving the function of lifting or lowering the elevator car. The double Screw Elevator is simply structured, easy to assemble, and the length of a single screw of the elevator is shortened, making it easier to manufacture the screw. The screw driving elevator reduces the occurrence of accident whiling improving the rate of utilization.
Nowadays, elevators have become indispensable to our daily life, and most of the conventional elevators are driven by steel rope. However, the steel rope elevators require frequent and regular maintenance, otherwise, the steel rope may break, causing injury or death.
The screw driving method reduces the occurrence of accident, and the serially-connected screw assemblies reduce the required length of a single screw, and thus making it easier to manufacture the screw. However, the screw assemblies each require a power source and are then connected In series, which complicates the structure and assembly of the elevator.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide a simply structure double screw elevator which is easy to manufacture and can improve rate of utilization.
To achieve the above object, a double screw elevator in accordance with the present invention includes: a double screw driving unit, a limit rail, a carrying unit, an elevator car, a suspension unit and an
The double screw driving unit includes a driving shaft assembly connected to a rotation power source, the driving shaft assembly is provided on an outer surface thereof with a first helical thread and a second helical thread in such a manner that the first helical thread of the first Screw and the second spiral thread of the second screw extend in the face of the direction of the driving shaft assembly for driving the driving shaft assembly to rotate.
The limit rail is disposed in parallel to the driving shaft assembly.
The carrying unit includes a nut fixed to one side of a carrying seat, the nut is screwed with the first thread of the first screw, while one side of the carrying is slidably received in the limit rail, and the limit rail restricting a freedom of Rotation of the carrying unit.
The elevator car is detachably disposed on the carrying seat of the carrying unit.
The suspension unit includes a nut fixed to one side of a suspension rack, the nut of the suspension unit is screwed with the second thread of the second screw, and one side of the suspension rack is slidably received in the limit rail, and the limit The adapter device is used to combine the elevator car and the suspension arm together. The double screw elevator in accordance with the present invention is simply structured, easy to assemble, and the length of a Single screw of the elevator is shortened, making it easier to manufacture the screw. further, the screw driving elevator reduces the occurrence of accident whiling improving the rate of utilization.