Tensile lifts
Traction elevators are used in commercial and residential buildings. The mechanism of operation of this model of elevators is towing wire, weights and plates. Another important issue that must be observed regarding elevators is their security. Of course, the importance of regularly inspecting the elevator should not be neglected; Because this work will prevent unexpected events.
It is interesting to know that elevator companies introduce 2 types of glass and closed for traction elevators, which are divided into rumless, gearbox and gearless types. will be In this section, we introduce these models:
Rommels elevator
The elevator motor in this model is placed inside the shaft, which has advantages such as small volume of parts and accessories, quick installation, easy service, significant electricity reduction, compatibility with the environment, and low brake noise.
Gearbox elevator
In this model of elevators, the gearbox is connected to the motor and has a speed between 1.7 and 2.5 meters per second. This model can travel up to a distance of about 76 meters. For this reason, they are not suitable for high buildings and several floors. The tolerable weight for gearbox elevators is up to 13,600 kg.
The engines of this elevator are produced in the following types: gearbox, gear box, electric motor and electric brake.
Gracel Elevator
In this model, the gearbox is not used, but the towing wire is connected to the top of the elevator cabin and its other end is connected to a weight to balance the mechanical system. The speed in gearless traction elevators is 2.53 m/s. Gearless motors do not require lubrication, while geared motors do not.
You can use gearless motors in a rumless system because they have less volume, but with geared motors because of the larger volume and weight. that they have, this is not possible.
Hydraulic elevator
It is called a hydraulic lift that works with the pressure of oil, water or other liquids. These types of elevators do not impose vertical load on the building frame. They also require less space compared to traction elevators. The most important components of hydraulic elevators are cylinders and pistons, oil sources, pumps, drain valves, and special hydraulic oil. Hydraulic elevators are divided into 3 models: normal, without holes, and cable. To choose the best elevator companies, you should also pay attention to the valid certificates and membership license in the elevator syndicate.
